Dynamic Systems Theory and Psychodynamic World View

energetic Systems theory and Psychodynamic World ViewEmma LeveyPsychodynamic world hitchThe psychodynamic view focuses on underlying subconscious and unconscious(p) processes, as head as the conscious. Emphasis is placed on stage progression, overcoming conflicts, and emotions (Miller, 2011, p. 106/134) with the most known psychodynamic theory existence that of Freud (Miller, 2011, p.110). quadruplet criteria will be outlined and illustrated with Freudian examples, before considering whether an article fits deep down the world view.The first criterion is that of forgiving temper, of which humankinds be passive and enactmentive. Humans are passive collect to the role underlying forces play in driving humans to act and they are vigorous done coping with these forces and attempting to obtain and brinytain offset by means of reducing conflict. The ego is the most nimble personality organize as it self-organises through regulating stimulation arising from the self and the environment, diligently decision making the insidengs to exhibit and continuously processing information (Miller, 2011, p. 134).The second criteria occupys soft or quantitative development, with both be utilize in this world view. Qualitative development is shown through in deuce ways, with the first being that the world view advocates stage development, for example the stages of sexual drive dictum in Freuds theory. The second way is through acquirement of def hold backing team mechanicss and new structures, such as the superego (Miller, 2011, p. 134). However, quantitative switch over is withal doable, as the strength of defence mechanisms and of the structures (such as the ego), locoweed differ which payoffs in voltage for quantitative alteration (Miller, 2011, p. 134).With regards to nature and genteelness, the psychodynamic view takes an interactionist stance. Nature is evident via a focus on biological maturation through metamorphoses in hormones an d biological, unconscious and powerful drives. These drives motivate (e.g. via the Id, Ego and Superego structures) small fryrens development and insidengs to deliver the goods drive satisfaction (Miller, 2011, p. 111-112). However, nurture-based influences (e.g. parents) overly play a part by affecting expression of these nature-based drives. This interaction of nature-based drives and nurture-based constraints dictates drive expression within the environment, with interaction at a young age setting the pattern for eruditeness and coping in later life (Miller, 2011, p. 120, 134-135). Nurture effects are seen to be to a greater extent important in the first five days of life than later life as the child is particularly plastic at this time (Miller, 2011, p. 135).The final criteria is teleology. Development is seen to have an endpoint (Dixon Lerner, 1999), which in Freuds theory is maturation, and is unidirectional as it progresses towards this endpoint. Regression through st ages is executable and often frequent, occurring when anxieties become too difficult to cope with (Dixon Lerner, 1999 Miller, 2011, p. 115). Finally, creator is multidirectional collec put off to the reciprocal effects of nature and nurture resulting in a causal effect on development.Salvatore, S., Eleonora, L. P., Marco, L. (2013). harm and the Father Image Fantasies and Complexes in the inkblot test Test. The Open Psychology Journal, 6, 1-5 doi 10.2174/1874350101306010001.In the interpretation of the Rorschach test, the features of the table IV inkblot evoke a dimension of authority, morals and related emotions. Interestingly, the produce go through is related to ego development and also guides towards matureness via more evolved emotions such as feelings of shame and guilt. In some cases these feelings are ground to be lacking in adults experiencing falloff. The aim of this work is to analyze the birth amid the representational world in relation to the tiro go stead y and depressive mood disorders. The group of subjects is composed of 25 patients who had a psychiatric diagnosing of Depressive episode. The figurehead of specific phenomena brings out the complexes, the uneasy and conflictual birth with the develop figure go down in the unconscious thus emerges. Shock is thereby manifested in relation to the black in which the life-size, dark, and blurred stimulus is perceived as sinister, threatening and dangerous. The trauma emerges in the result of a relationship with a father who has non allowed the child to manage similarities and differences. From the nature of the answers of the Rorschach protocols, it emerges that the typic abilities of subjects are not fully genuine or have been attacked by an previous(predicate) trauma.Human nature in this article was both active and passive. Passive nature is shown by the example of the unconscious drives as The presence of specific phenomena brings out the complexes, the uneasy and conflictual relationship with the father figure submerged in the unconscious thus emerges (Salvatore, Eleoniora Marco 2013, p. 1) with the specific phenomena in this case being the inkblot used to elicit an underlying response concerning the father. Human nature is active through participants subjectively organizing the content and form of the stimuli presented to him (2013, p. 1). Active self-organization is shown through dealing with the self (e.g. father anxiety) and the external inkblot stimulus which enables participants too actively express his feelings and give shapes and meaning to what he sees (2013, p. 1). The active environment can be seen in the Rorschach test which prompts the translation of things and feelings into words and collectible to the external fathers negative influences on space for the vision resulting in the deferment that symbolic abilities of subjects are not fully developed (2013, p. 1-2).In this retrospective study, neither qualitative nor quantitative change was considered, so speculation into both should be done. Potential evidence for qualitative change concerns the inkblot used, which requires a developed imagination top executive referable to its intensity. Thus, use of this inkblot is cogitate with the emergence of a new level of mental functioning and the acquisition of a new qualitative skill, the ability to imagine (Salvatore et al., 2013, p. 1). Other qualitative change could be the development of a new defence mechanism to aid coping with negative father experience. Quantitative change could concern an increase or come down in ego strength, as a result of the father being related to ego development (2013, p. 2).Thirdly, Salvatore and colleagues (2013) punctuate nurture through their focus on father influence. The inkblot used evokes father figure symbolization with the fathers importance shown as he becomes the receptacle holding the feeling of omnipotence (Salvatore et al., 2013, p. 1). The importance of early nurture ex perience is shown as the compromised paternal representation, formulated in the inner world at an early age influences adulthood as it exists timelessly in the perpetuated unconscious (2013, p. 5). Also, participants lacked symbolic ability callable to an early trauma emerging as the result of a relationship with a father (2013, p. 1). As nature is not directly considered, one potential way in which its effects could be seen concerns the participants with depression and the fathers relation to ego development via more evolved emotions, which are lacking in adults experiencing depression (2013, p. 2). As depression is a chemical imbalance, this could be seen as a mediation effect of nature (via depression), upon evolved emotions influenced by the father (nurture) resulting in less advanced development due to this interaction.Concerning teleology, it can be implied that maturity is considered to be the developmental endpoint as the father figure and his relationship with the ego guid es towards maturity (Salvatore et al., 2013, p. 2). This also implies unidirectional development, as development proceed towards maturity. In contrast with the criterion, the article advocates unidirectional causality as it focuses on early father impact upon progression towards maturity as the father figure () guides towards maturity via more evolved emotions such as feelings of shame and guilt, and no mention is made of causality derived from the person (2013, p. 1). This may be due to the retrospective nature of the study as participants are purely reflecting on their relationships with their fathers. Also, no explicit mention of fixation is made.In conclusion, the article of Salvatore and colleagues (2013) is psychodynamic due to its acknowledgement of various required criteria, such as human nature. However, for it to tout ensemble fit in the world view it also should have considered, multidirectional causality, fall backion and explicitly considered qualitative and quantit ative change within the study.Dynamic Systems TheoryDynamic systems theory (DST) is a holistic view due to behaviour only being understood through considering the multiple and uncouth interaction of all system levels in self-organizing systems, with the organism-in-context as the unit of analysis (Miller, 2011, p. 414). Four DST criteria will be presented and an article which fits within DST presented and discussed.In DST, human nature is active and ingrained from the active environment, and thus the person and environment should not be considered separate due to their constant interaction within the developmental system. The active individual is shown through its ability to construct behaviour through experience within a part of the bigger system (Miller, 2011, p. 421) and also through self-organisation (change through the organisms own activities) (Thelen Smith, 2006, p. 259 cited in Lerner, Lewin-Bizan Warren, 2011, p. 28). The environment is active through the role of experi ence and its participation with the organism in mutual interaction. This interaction is important in determining development as the environmental task and the motivations and skills of a person both control and influence the growing factor at a certain time and situation, within the larger system.The second criteria concerns change, which is constant, given and based upon the continuous interaction of the individual and the environment. permute can be on a small or large musical scale, with smaller scale change having the potential to cause large scale system changes. It is also considered on a moment-to-moment time scale or over a longer period (Miller, 2011, p. 417). Change can be quantitative and qualitative, although qualitative change often results due to an accumulation of underlying quantitative change until a critical threshold is passed, resulting in a novel qualitative skill emerging (Miller, 2011, p. 417, 421).The third criteria concerns the nature nurture distinction, which is redundant due to DSTs interactionist stance (Thelen Smith n.d, cited in Lerner et al., 2011, p. 28 Miller, 2011, p. 418). As such, nature and nurture are evenly important in development as change occurs due to the organism-context relation. developmental diversity is the result of differences in the timing of this interaction (Lerner et al., 2011, p. 29).The final criteria is teleology. Regression is seen as possible because the system can regress to a previous attractor state if required. Multiple possible endpoints exist due to the infinite ways in which system parts can combine and result in developmental paths (Thelen Smith, 1998, 2006 cited in Lerner et al., 2011, p. 30). Both the ability to regress and the concept of multiple end points suggests multidirectional development. Finally, causality is configural as development concerns bidirectional relationships within and across coalesced levels of organisation which change over time (Lerner et al., 2011, p. 29).Gra nic, I., OHara, A., Pepler, D., Lewis, M. D., (2007). A Dynamic Systems analysis of parent-child changes associated with successful real-world interventions for high-pressure children. Journal of Abnormal Child Psychology, 35, 845-857. doi10.1007/s10802-007-9133-4.Studies have shown that improved parenting mediates treatment outcomes for aggressive children, but we lack small-grained descriptions of how parentchild interactions change with treatment. The current study addresses this gap by applying new dynamic systems methods to study parentchild emotional behaviour patterns. These methods tap moment-to-moment changes in interaction processes within and across sessions and quantify previously unmeasured processes of change related to treatment success. Aggressive children and their parents were recruited from combined advert Management Training and Cognitive-behavioral programs in real world clinical settings. behavioral outcomes were assessed by reports from parents and clin icians. At pre- and post-treatment, home visits were videotaped while parents and children discussed consecutively a supportive topic, a mutually unresolved problem, and some other positive topic. Results showed that world-shattering improvements in childrens externalizing behavior were associated with increases in parentchild emotional flexibility during the problem-solving discussion. Also, dyads who improved still expressed negative emotions, but they acquired the skills to repair conflicts, shifty out of their negative interactions to mutually positive patterns.The article fits in with the criteria of human nature as it constantly considers the parent (environmental influence)-child interactions throughout the study, with The parent-child interactions of children who showed clinically significant improvements (IMPs) were compared to those of children who did not improve (NIMPs) (Granic et al., 2007, p. 847). This therefore shows parent and child to be equally important and inseparable as the analysis focuses on their interaction kinda of separate effects. Another example of the environment and the child as inseparable and active is flexibility, the ability to shift from one emotional state to another according to contextual demands (2007, p. 846). This shows the active childs role in shifting emotional states and the environments role as a trigger.One way in which the article adheres to DSTs concept of change concerns real-time interactions, which are the proximal engines of development (Granic et al., 2007, p. 846), showing this moment-to-moment change to be important. This is further supported by tmeasurement of moment-to-moment changes in interaction processes with and across sessions (2007, p. 845). Granic and colleagues used multiple time scales by also focusing on a longer twelve week period, showing a focus on continuous change (2007). Both qualitative and quantitative change are evident. Quantitative change can be seen in the measurement of i ncreases or decreases in anti-social behaviour across pre- to post- treatment. Qualitative differences were shown as children were classified as Improvers (IMPs) or Non-Improvers (NIMPs) based on a combination of the information from the two quantitative measures (2007, p. 850). Thus, childrens qualitative improvement status in anti-social behaviour was take cared by quantitative changed in measure scores fleeting a threshold (e.g. 20 points reduction in one measure) to determine which group they were classified as.The interaction of nature and nurture, required for the third criteria of DST, is also shown in this article, as it focuses upon how parent-child interactions change with treatment (Granic et al., 2007, p. 845) thus showing an consolidation of child and environment (in the form of the mother and the effect on the treatment). These interactions were the main focus in the study, showing there to be an interaction between nature and nurture in explaining the behaviour tar geted in the article (anti-social behaviour) as the researchers applied dynamic systems methods to study parent-child emotional behavioural patterns (2007, p. 845), as parent-child interactions were notice and videotaped (2007, p. 848).The final criteria is teleology. Despite there being no specific informant to multiple end points, it was suggested that of an infinite number of combinations of system parts is possible, as the dyads trajectory() is plotted in real time on a grid representing all possible behavioral combinations, suggesting multiple developmental paths with different endpoints (Granic et al., 2007, p. 850). Regression was considered as whilst IMPs showed increased flexibility from baseline, NIMPs showed a decrease in flexibility(2007, p. 854). Multidirectionality of development is also seen due to the ability to regress and also because state-space grids were constructed separately for each dyad, showing different trajectories (2007, p. 850). Finally, bidirectional , configural causality was shown as behaviour improvements were associated with increases in parent-child emotional flexibility with the consideration that reciprocal cross parent-child warmth and affection may be a cause of improvements in childrens aggressive behaviour (2007, p. 845/854). This showed parent (environment) and child to exert an interactional causal effect on externalizing behaviour.In conclusion, the above article fits within the DST world view due to its consideration of the environment and a child as a constant interaction, its focus on multiple change time scales, nature-nurture interaction, and its multidirectional view on causality and development.ReferencesDixon, R. A., Lerner, R. M. (1999). A history of systems in developmental psychology. In M.H. Bornstein, M.E. Lamb (Eds.) Developmental Psychology An advanced textbook. fourthly Edition. Mahwah, NJ Lawrence Erlbaum Associates.Granic, I., OHara, A., Pepler, D., Lewis, M. D., (2007). A Dynamic Systems anal ysis of parent-child changes associated with successful real-world interventions for aggressive children. Journal of Abnormal Child Psychology, 35, 845-857. doi10.1007/s10802-007-9133-4Lerner, R.M., Lewin-Bizan, S., Warren, A.E.A. (2011). Concepts and theories of human development. In M.H. Bornstein, M.E. Lamb, (Eds.) Developmental Science An advanced textbook. Sixth Edition. Mahwah, NJ Lawrence Erlbaum Associates, Publishers.Miller, P. H. (2011). Theories of Developmental Psychology. New York, NY Worth.Salvatore, S., Eleonora, L. P., Marco, L. (2013). Trauma and the Father Image Fantasies and Complexes in the Rorschach Test. The Open Psychology Journal, 6, 1-5 doi10.2174/1874350101306010001

Unhealthy Lifestyles And Obese Children Physical Education Essay

Un sanitary Lifestyles And Obese Children personal Education EssayThe figure of fleshiness children is rapidly increasing due to their unhealthy lifestyle and eating attire much(prenominal) as addicted to fast food, video games, and online games which occur in most of the children community nowadays. Unhealthy lifestyle ca utilize most of the children dislike somatic bodily movement and lack of forcible seaworthiness. A number of researchers mixed in thatched roofing strong-arm signifieres al courses express the relationship between decreasing of union in strong-arm natural action towards increasing of health-related risks such as obe sety, diabetes, cardiovascular disease (Domangue, 2009). We as somatogenic instructors bring forth to see to it factors leading to children sensual innatural process. It is very meaning(a) to understand why youngsters suck up themselves from corporal action mechanism as they get matured. In tangible reproduction partitiones, sea worthiness scrutiny act as a very life-or-death comp unitynt which avail to create aw arness of health concerns on fleshly in single-valued function cases positionly among children (Domangue, 2009). Physical act is defined as whatever type (mild, moderate, vigorous) of bodily movement for instance jumping rope, soccer, weight lifting, running, walking, victorious stairs and others which behind be our daily r come out of the closetine activities, recreational activities, as strong as sport activities. Literally, health-related visible fittingness means tangible activity that involved mild or adverse physical torso movement that contribute to their general ashes health (Karinharju, 2005). School-based physical class explains when participant is physically quick, heart pumping rate increases and produces heavier breathing than normal breathing. Unfortunately, a lot of schools neglected physical information class and whole focalize on physical class. In fact, physi cal commandment and physical activity ar evenly of the essence(p) elements that contribute towards children health get outment.In Silverman et.al. (2008) account cited youth seaworthiness examen was designed to embarrass those children who ar little cap suitable in physical activity. Those children who can non bring about wellhead especially those obese children leave be insulted by their peers and eventually they allow for describe themselves from involving in physical activity. We should not turn children down in physical activity by right as a school t to each oneer we should help children to operate interest in physical activity. For instance, a expand children will feel embarrass fleck doing stretching. They might unable to blow over the coveted point and will be laughed by their peers. Girls might not like to play soccer, running around the field fighting for a ball. They might prefer jumping rope. So while designing fittingness riddleing, much(prenomi nal) consideration should be taken such as gender, organic structure size and fittingness. As a physical instructor, we should help schoolchilds to learn more about seaworthiness and physical activity in swan to p atomic number 18nt peremptory military strengths on physical activity.I further belief if physical fittingness evidenceing was utilisationd in positive and separate ways it will enhance pupils physical educational experience as well as promote good attitudes and interest. There is few controvertion on fittingness testing has been done in recent years and the discussions were basically taken in tether forms. First, some researchers suggest discontinuing school-based youth seaworthiness testing in physical education planme. Be name school teachers argon more centralize on students activity make outance instead of health-related seaworthiness (Silverman, 2008 Rowland, 1995 Corbin et al., 1995). Second, researchers suggested that school-based physical classes should emphasize on educational aspects. Tests and teaching should carried out together to help to ameliorate students physical fitness and companionship (Silverman, 2008 Cale Harris, 2002 Corbin Pangrazi, 1993). Lastly, thorough examination of student fitness deed testing is indispensablenessed earlier designing and making decision on the measure to come of physical class context and tests. (Silverman, 2008 Cale et al., 2007 Corbin et al., 1995 Keating Silverman, 2004).To be physically fit, one has to be physically lively. Definition for physical fitness is an adaptive state that varies with the individuals growth and maturity status and with habitual activity and lifestyle (Domangue, 2009 Malina, Bouchard Bar-Or, 2004). Furthermore, physical fitness can be categorized into two categories which is health-related fitness and mathematical operation-related fitness. Health-related fitness is fitness that everyone films which contributes to maintain and mend he alth status of our body. Performance-related fitness refers to skilled athletes or performers who need to be success or stick out in their performance in sports activities. Basically, health-related fitness is assessed by measuring cardiovascular fitness, flexibility, muscular endurance, strength, and body fat marrow or body jackpot index (BMI) (Hale, 2005 Corbin, 2005).Rowland, 1995 drew a conclusion that physical teachers should not checkout fitness testing, but should implement fitness tests in the physical education class. Children and adults fool different used of fitness test. So, while planning physical activities, this should be taken in concern. Children cannot square up whether to get in in fitness testing or how to use the exits of those physical sound judgements. Whereas, adults are able to decide and choose whether to use fitness testing as a additive perspicacity to check their current health-related fitness levels of how fit they are at the period of time or as moldable assessment to infinitely assess health-related fitness level in order to modify fitness program as part of program planning. Adults who decided to go for any formal (with trainers) or informal training (self-training) already ready and postulate some commitment to do physical activity. But children do not mother such commitment and do not know how to specify decision. Therefore, youth fitness testing can involve opposite result if it is not perform divertly, and will have consequences to develop ostracise attitude and patterns of physical activity among children. But, youth fitness testing should play an important role in school physical education setting in order to enhance students fitness (Silverman, 2008 Bar-Or, 1993 Cale Harris, 2002 Whitehead, Pemberton Corbin, 1990), and implementation of fitness testing should be examined often to proceed any deviation that will result in the misuse of fitness tests (Silverman, 2008).In order to have positive refe r of physical testing in school, silverman has suggested some guidelines to implement a positive impact fitness test. First, youth fitness testing should be integrate as a part of fitness instruction in curriculum. Although assessment is important goal of teaching but without a solid curriculum it is merely testing (Stewart, Elliot, Boyce Block, 2005). Second, fitness testing result should be used by teachers to assess their fitness instruction and enhance students learning (Corbin, 1981) while physical classes. Long-term and short-term outcomes of fitness testing of children should be taken into concern by teachers and curriculum planners planning for future activities. Third, the point of having physical class is for students to improve their body fitness and towards meeting their healthy zone standard. We should teach students not to assume that fitness testing will automatically increase their physical activity levels but it is just to test their body fitness. It is importan t to understand their body fitness and help to design future activities. If fitness testing was used appropriately and used as an educational stopcock, it has the potential to promote physical activity and alike help to improve health-related fitness. In many schools in Malaysia, students are only required to be tested on fitness test once in a year. Compare to academic tests physical test is far lesser. During fitness tests, instructional time spent on fitness testing should not be thin outd. Without positively increasing youngsters physical activity levels and health-related fitness does not urinate sound use of fitness tests.Health-related fitness testing should be carried out in school, and it is important to include two physical activity and too health-related fitness in physical education class so that student will able to understand the difference and complementary nature of the concepts (Silverman, 2008). Health-related fitness has to be taught as part of curriculum so that student able to understand the concept and the purpose of the test. Health-related fitness testing in like manner can be used as a tool to examine concepts and components of health-related fitness and physical activity. For example, while teacher introducing the sit-up test, teacher can discuss on the anatomy of the body and the function of the muscles involved and how the body perform the activity and how to improve their strength and endurance. Provide important information and acquaintance while doing the activity, student can understand better the purpose of having each test and also prevent to get injured. Without proper knowledge, students are more tend to get injured, due to lack of knowledge of proper mould undergoing particular activity. instructor has to educate students the correct posture and way to perform those activity to protect our body muscle and anatomy. Lacking important knowledge might influence students performance, motivation and interest as well. Ev entually, they will cultivate negative attitude and their bad experiences in physical education will influence their attitudes towards future assessment and physical activity and eventually cause them to withdraw from physical activity.Another reason why teaching both health-related fitness and physical activity is important, because the current examination of physical activity assessment program may mislead students into thinking that regular participation in any mild to moderate physical activity for 30-60 proceeding is sufficient to maintain their health. NASPE recommends those children aged 5 to 12 years should be physically officious for at least 60 minutes to some(prenominal) hours of per day (Domangue, 2009). As children get matured, the recommended duration for physical activity varies. Adolescents need lesser hour to be physically active compare to children. They need only 30-60 minutes daily (Yesalonia, 2009). Unfortunately, many school-aged students have too petty(a) o pportunity to participate in these recommended physical activities during school hour. In this situation, students are required to balance their physical activity levels outside the school as extra-curriculum.Outside the regular school hours, many children could be physically active in sedentary activities such as homework, computers and video-games which children only required to sit on chair. This can affect activity levels of school-aged children. Perhaps the most important time for children to be active is after school is between three and six p.m. But often children nowadays are not, they will sort of spend time on sedentary activities or their academic curriculum. Parents have press more on their academic rather than their physical achievements and also safety issues parents stop letting children to involve in physical activities. . As a school teacher, we should march on parents to allow their children to be physically active instead of filling all those active hours with t uitions, piano classes and homework. Children can have opportunity to be active after school hours by take part in extra-curricular activity programs, such as basket ball, soccer, as well as community-based activity programs. Remember, physical activity and health-related fitness is both equally important. We should not too emphasize on physical achievement and ignore the basic rationality on health-related fitness.Through the health-related fitness testing, teacher is liable to educate students the purpose of participating in a variety of physical activity form and methods to improve corresponding health-related fitness components as well as the recommended duration in performing physical activity. Health-related fitness testing is an excellent context to teach students to examine on both health-related fitness and physical activity concept. Students can understand health-related fitness not only improve their health level (Silverman, 2008 Simons-Morton et al., 1988) but also th eir cognitive skills (Hillman, Castelli, consign 2005). School-based physical classes may not done an adequate job in teaching students on the importance of health-related fitness or have taught respectively with physical activity. If health-related fitness testing is done separately, there is no way that student will develop the knowledge that can be develop from an understanding of both health-related fitness and physical activity assessment.Teacher should teach assessment skills to students. If student able to use fitness test for self-assessment, they are able to use the understanding of health-related fitness learned during physical class and able to plan their own physical activity programs according to their desired target. Students were taught that fitness testing can be used as formative assessment to develop and modify their physical activity routines to help them have the knowledge to start an appropriate level. Assessment skills also able to help students keep partic ipating in physical activity if they know what their judge goal is. The formative testing experience will reinforce fitness gains and also enhance additional motivation for students to continue involved in physical activity (Silverman, 2008). Students learn to compare the scores with their previous performance and to design a suitable goals and activity according to their body level. Applications of appropriate use of fitness tests taught in class equip students with the knowledge and skills to participate and to select appropriate physical activity and help them to perform self-assessment.To incorporating health-related fitness assessment into fitness education, teacher should teach students the purpose of doing the fitness test or other fitness-based activity. Student should understand the instructional content before performing the test. Then, fitness testing should be formative. Teacher should plan the educational experience to use fitness testing results to design future activ ity for students while also teaching students that health-related fitness can be better and assessment is integral to that process. Another way is to conduct fitness education by infusing fitness lessons into curriculum. This can be done by relating each activity done to fitness. So, student will have better understanding on how those activities related and improve their body fitness, why that aspect of fitness is important. With that knowledge, students are able to understand and eventually improve their performance on that activity. For example, students participate in school gymnasium should know that gymnasium activity are exercising their heart and will help make them healthy and good for their heart. They should know the health-related fitness component is called aerobic fitness and helps to prevent heart disease. With this understanding, students were being more motivated on physical activity. The use of fitness test helps students to understand health-related fitness and how testing can be used to improve and enhance fitness.Infusing health-related fitness test in physical education can increase student knowledge, attitudes and fitness. In primary schools students, teacher will help students in assessment and plan their future physical activity, but in secondary school, after fitness testing, students could provide an abridgment of their strengths and weaknesses and develop a fitness program suitable to them. Teacher could use variety of teaching strategies such as reciprocal teaching, self-check against predetermined rubrics and assessments such as using the analysis and plan for providing feedback to the students (Silverman, 2008) to help students to improve and also to monitor their program.Planning and assessment of physical activity is necessary in order to improve students learning experience and to meet the goals of instructions (Silverman, 2008). Without assessment, we are unable to know our standard and level. Teachers act as a demonstration as a form of assessment to assess fitness education the result of the assessment is for the teacher to do self-assessment and reflect on the lesson. Teacher means act as a problem solvers (i.e., design the content or lesson to achieve goal and to assess achievement of the goal, and whether there are other better ways to enhance instruction). Second step is student learning. Fitness testing result is to examine student learning from quadruplicate perspectives (increase various component of health-related fitness, increases in physical activity, attitude toward fitness and physical activity). This health-related fitness test may tell how fit students are, ignoring the fitness improvement, physical activity and attitude development. Next is the appropriate use of accountability for assessing fitness education. Principals should be aware that fitness testing may lead negative consequences. Always ensure that the test is use appropriately and moldiness be used within the context and pe rform a complete fitness education program if we want students to live in physically active lives. Assessment and accountability program should design appropriately and examine from time to time being as one aspect of student assessment and physical grading.As a school physical education teacher, I strongly believe that health-related fitness tests that are used in an appropriate educational manner can be a useful tool to enhance student learning and also health level. Although there is unsubtle variation in the capabilities of students, the main purpose of fitness instruction should be that every student can work towards being fit and pretend healthy level. While designing the test, physical class teachers should consider those less capability students and help them to improve by educating health-related fitness. The main focus on physical education should be on evolving fitness process, students participation careless(predicate) on performance and result achieved. A well-planned physical fitness program with a positive classroom environment is very crucial to yield positive attitude, interest and motivation of students on physical activity especially for those less capability. Teachers should put more efforts on those students who may feel fitness testing is an embarrassment. Silverman (2008) suggested that assessment methods can move from group administration of test to pairs testing or self-assess. It can help to utilize time better, develop self-assessment skills and less embarrassing for most students.In a nutshell, I allot to infuse health-related fitness in physical class. Both physical activity and health-related fitness is equaled important to enhance body fitness and health. In order to have positive outcome, physical educator should designed an appropriate program for students in order to improve their fitness and encourage them to participate in physical activity and not to emphasize on performance achieved. Educators have to alert those studen ts who are less capable in physical activities and encourage them, support them to involve in physical activity and educate them on health-related fitness. So that they can understand why they need to do that particular activity and what is the benefits of doing that. Educators should stress more on health-related fitness rather than performance-related fitness.Cale, L., Harris, J. (2002). depicted object testing for children Issues, concerns, and alternatives. British Journal of Teaching Physical Education, 33 (1), 32-34.Cale, L., Harris, J., Chen, M.H. (2007). more than than 10 years after The horse is dead Surely it must be time to dismount? paediatric Exercise Sciences, 19, 115-131.Corbin, C.B. (1981). First things initiatory but dont stop there. Journal of Physical Education, Recreation and Dance, 52(1), 36-38.Corbin, C.B. (2005). Keynote allot Promoting active living The key to shaping up for a lifetime. Vermont fellowship of Health, Physical Education, Dance, and Recreat ion Fall Conference. November, 2005. Killington, Vermont.Corbin, C.B., Pangrazi, R.P. (1993). Physical fitness Questions teachers ask. Journal of Physical Education, Research and Dance, 64 (7), 14-19.Corbin, C.B., Pangrazi, R.P., Welk, G.L. (1995). A response to The horse is dead Lets dismount. Pediatric Exercise Science, 7, 347-351.Domangue, E.A. (2009). A critical examination into motivation and gender in youth physical fitness testing (Doctoral dissertation), Louisiana State University, LA.Hale, D. (2005). An invitation to health. (11th ed.). Belmont, CA Thomson Learning, Inc.Hillman, C.H., Castelli, D.M., Buck, S.M. (2005). Aerobic fitness and neurocognitive function in healthy preadolescent children. practice of medicine Science in Sports Exercise, 37, 1967-1974.Karinharju, K (2005). Physical fitness and its testing in adults with intellectual disability. (Master dissertation), University of Jyvaskyla, Finland.Keating, X.D., Silverman, S. (2004). Teachers use of fitness test s in school-based physical education programs. beat in Physical Education and Exercise Science, 8, 145-165.Malina, R.M., Bouchard, C., Bar-Or, O. (2004). Growth, maturation, and physical activity. (2nd ed.). Champaign, IL forgiving Kinetics.Rowland, T.W. (1995). The horse is dead Lets dismount. Pediatric Exercise Science, 7, 117-120.Silverman, S., Keating, X.D., Phillips, S.R. (2008). A lasting popular opinion A pedagogical perspective on youth fitness testing. measurement in Physical Education and Exercise Science, 12 146-166Simons-Morton, B.G., Parcel, G.S., OHara, N.M., Blair, S.N., Pate, R.R. (1988). Health-related physical fitness in childhood status and recommendations. Annual Review of Public Health, 9, 403-425.Yesalonia, S. (2009). ground school students perspectives regarding physical activity and fitness (Doctoral dissertation), Available from Dissertations and Theses database. (UMI No. 3352936)

Temperature On The Growth And Survival Of Bacteria Biology Essay

Temperature On The Growth And Survival Of Bacteria Biology EssayAbstract The stick of this experiment was to asses the ripening and pick of 5 bacteria. The method involved placing for each unrivaled of the bacteria in water baths of various temperatures for certain periods of time, taking them go forth and placing them in their optimum temperatures and monitoring their bring aboutth/survival number e veryplace the course of the week. The results obtained showed that how hygienic the bacteria grew after they had been placed in their optimum temperatures and left for a week. From this it was concluded what the temperature class of each bacteria was. grounding The objective of the experiment was to look at the proceeds and survival rate of 5 bacteria namely, Bacillus stear an a nonher(prenominal)(prenominal)mophilus, Escherichia coli, Enterococcus faecalis, Bacillus subtilis and Pseudomonas fluorescens. Escherichia coli, commonly referred to as E.coli is a deoxyguanosine mon ophosphate negative bacterium which is rod shaped.It is usu onlyy set in motion in the large intestine of warm blooded animals. It is excessively form in foods and water. It is a facultative aerobe meaning that O2 is non necessarily compulsory for growth but is preferred for better growth thus it is equal to metabolise both aerobic and anaerobically. Every micro existence has a minimal, optimal and supreme temperature. These argon known as cardinal temperatures and they tell us a lot about the nature of a microorganism. A mesophile is an organism which grows at its best in medium temperature conditions. A psychrophile on the other hand is an organism which is capable of growing in extremely iciness temperatures. Thermophiles are virtually the opposite of psychrophiles. Theyre organisms which are capable of growing and reproducing the intense environments. The term thermophile means that it is kindle loving or heat tolerant.The temperature and pH are good indicators of the environment E.coli stand be implant. The fact that it has a ph of 6-7 means that it is found in mildly acidic to so-so(p) places which explains why it is in the large intestine of mammals. The bacteria manage to put up in these various environments due to their adaptive metabolism. (Madigan, Martinko, Dunlap and Clark, 2008).Enterococcus faecalis (E.faecalis) is a gram compulsory and is naturally occurring in the intestine of mammals, the soil, in plants and in water. The presence of E.faecalis and E.coli in the water is usually an indication that the water has been contaminated. It is found in like habitats to E.coli.Bacillus stearothermophilus (B.stearothermophilus) is also a rod shaped gram commanding organism it is usually found in hot springs and the soil.Pseudomonas fluorescens (P.fluorescens) is a gram negative rod shaped bacterium. It is usually found in cooler environments such as water. It is an harbour aerobe which means that it can non grow in the absence of oxyg en. Bacillus subtilis (B.subtilis) is also a rod shaped gram positive bacterium which is mainly found in the soil. It too is an obligate aerobe (Brooker, Widmaier, Graham and stilling, 2007).Method Please refer to the schedule for this.ResultsBelow are the tabulated results that were obtained from the experiment. Table 1 shows the effect of inoculating the bacteria at dissimilar temperatures had on their growth rate. Table 2 shows the results of exposing the bacteria to extreme heat conditions on their survival rate.Temp (C)25374255E.coli+++++++++++++++++++++++++++++++++E.farcalis+++++++++++++++++++++++++++++++++B.subtilis++++++++++++++++++++++++++++++++P.flourescence++++++++++++++B.steaothermophilus++++++++++++The table above shows how well the bacteria grew at different temperatures. really strong growth is represented by +++, medium by ++, easy growth by + and no growth by -. Looking at E.coli for example it is clear that it only grows well in the region of 25-42C anything beyo nd this showed absolutely no growth occurring.Time (minutes)E.coliTemp (C)025309040Y, N, YY, Y, YY, Y, YY, Y, YY, Y, Y60Y, Y, YY, Y, YY, Y, YN, N, NN, N, N80N, Y, YN, N, NN, N, NN, N, NN, N, N degree CelsiusN, N, YN, N, NN, N, NN, N, NN, N, NB.subtilis40Y, YY, YY, YY, YY, Y60Y, YY, YY, YY, YY, Y80Y, YY, YY, YY, YY, Y100Y, YY, YY, YY, YY, NTable 2 The effect of heat on survival of bacteria. Key Y= growth present N= no growthE.faecalis40YYYYY60YYYYN80YYYNN100YYYNNB.stearothermophilus40Y, NY, NY, NN, NN,N60Y, NN, NN, NN, NN, N80N, NN, NN, NN, NN, N100N, NN, NN, NN, NN, NP. fluorescens40Y, N, YY, Y, YY, Y, YY, Y, YY, Y, Y60Y, Y, YY, Y, YY, Y, YN, N, NN, N, N80N,Y, YN, N, NN, N, NN, N, NN, N, N100N,Y,NN, N, NN, N, NN, N, NN, N, NDiscussionWith the entropy that is in table 1 the nature of each bacterium can be established. E.coli showed exceptionally strong growth in the range of 25 to 42C. These results are perfectly in line with the characteristics of a mesophile as such it is safe to assume that E.coli is a mesophile. This also explains why it is found in the human intestine. The core temperature of the human body is 36.8C 0.7 which concord to the literature is the optimal temperature of E.coli. The same thing goes for E.faecalis. It too is a mesophile and one of the locations where it is found is also the gastrointestinal tract. The entropy in table 1 coupled with the fact that it is found in the same location as E.coli means that it too has the same optimal temperature as E.coli.B.subtilis grew throughout all the temperature ranges but grew the best in 55C. It was however strange to jar against it grow in the areas of 25-37C as it is by nature a Thermophile. The minimum temperature that is required for thermophiles to grow is approximately 42C. B.stearothermophilus on the other hand showed a classic example of a thermophillic bacterium. It grew best at 55C. The last bacterium in table 1 was P. Fluorescens. It grew well at 25C but seemed to be decreasing p lacid substantially at 37C. The information on the table did not quiet break down in with the characteristics which are exerted by mesophiles. Mesophiles usually grow best at roughly 30-40C however P.fluorescens optimal temperature was around 25C which meant that it could not be a psychrophile. It did however fit the characteristics of a psychrotroph. Psychrotrophs are organism which grow at 0C i.e. similar to psychrophiles but, usually defy an optimum temperature of 25C whereas psychrophiles have and optimum temperature of 10-12C (www1).Table 2 showed the effects of exposing the bacteria to superior temperatures had on their survival. Temperature is most likely the most important factor that contributes to the growth and survival of the bacteria. From the literature it can be ga in that locationd depending on the organism, exposing it to very proud temperatures will kill it. In the case of E.coli this is the case. It managed to stay unrecorded at 40C for 90minutes. This is un derstandable as this is below its maximal temperature. Once it had been placed into higher temperatures for a long enough duration, it died off. This was not the case for B.subtilis. It proved to be growing throughout all temperature ranges for the secure 90 minutes of the experiment. The fact that it managed to survive at temperatures as high as 100C implies that it may be a hyperthermophile (Madigan, Martinko, Dunlap and Clark, 2008).P. fluorescens also died off after being exposed to increased temperatures for some time. At 30 and 90 minutes, all of people who were doing the experiment reported that there were no bacteria subsisting at 60C. At 2 minutes into the experiment at 80 and 100C no(prenominal) of the bacteria were alive.Most of the results obtained from the experiment seemed to be in line with the information found in the literature some werent for example E.faecalis was still alive in almost all of the higher temperature ranges when clearly it shouldnt have been as i t was is a mesophile and shouldnt grow after around 46C. B.stearothermophilus, a thermophile was not growing in temperature ranges where it should have been. These mistakes may have been due to employ correct aseptic techniques while inoculating properly. In order to slip by such errors the experiment could be run 2 to 3 times.

Series Pass Voltage Regulator From Discrete Electronic Engineering Essay

serial Pass potential complete governor From Discrete electronic Engineering EssayThe objective of this project was to construct and design a 9V 0.3V, 1A serial publication track potential governor from decided electronic parts. The electromotive force governor moldiness exhibit a emf normal of 5% or better and should be supplied with a dc enter potential drop. The governor hitch was required to include a way to unplug the lodge from the regulator if the accuse certain exceeded 1A or if the temperature of the serial publication pass member exceeded 40C.It was requirement to measure for all(prenominal) one argument of the circuit and turn it from an parallel of latitude to a digital signal. This signal would moodyer up entropy necessary to parade the values on the Spartan III FPGA ripening Board.The quantitative disclose was not to carry any zeros leading a number, unless it unnatural the value. Also, the display was to be cyclic, alternating at 5 sec ond intervals.The circuit was designed, built and tested. It produced 9.03V return and 1.02A by dint of a 9 cargo. The cut- run into protection worked as well as the variable perception circuitry. The physical contactage of the analog and the digital components, however, remain incomplete.ContentsLIST OF FIGURESLIST OF TABLESLIST OF ABBREVIATIONS AND SYMBOLSSymbol interpretationADCAnalog to Digital convertorOp-ampOperational AmplifierV potentiality/VoltsI on-line(prenominal)RResistanceAAmpereOhmC grade CelsiusFFaradICCollector latestIBBase CurrentVBEBase-Emitter electric potentialLUTLook Up plug-inBCDBinary Coded DecimalMUXMultiplexerCLK quantifyDPDTDouble Pole Double ThrowFPGAField Programmable Gate alineTable List of Abbreviations Contained in this ReportINTRODUCTIONCommercial occasion is usually distributed with an AC supply. An unregulated potential drop such as this could front damage to many household appliances and electronic devices. on that transferfore it is a safety device hazard.A potency regulator is a device that maintains a relatively constant take potentiality for a varied arousal potential. It functions by comparing the railroad siding potential difference to a fixed reference and minimizing this struggle with a negative feedback loop.The aim of this project to design a serial publication pass potency regulator with an production of 9 0.3V and regulation of at least 5%. It should be able to disconnect the pro fane from the regulator for temperatures exceeding 40C and a menstruum greater than 1A. victimisation A/D change overers, these values ( product regulator potency and flow, temperature of the series pass junction transistor) were converted to digital format and displayed on the Spartan III FPGA Development Board. apiece value received from the analog component should be displayed with no unnecessary leading zeroes. The display had to alternate between different variables of voltage, original and temperature.The Digital Component of this project was designed in Xilinx ISE 7.1i, and the necessary tests were carried out. A User Constraints file was realised, which allowed for the programming of the FPGA Board.BACKGROUND THEORY AND LITERATURE brush upUsing an unregulated place supply is unfeasible for most tasks. This is be evidence as the accuse flowing increases, the ripple voltage increases and the DC output voltage moderates. The voltage regulator greatly compacts ripple and produces a steady output voltage for a work of commentary voltages.Different casings of voltage regulators stupefy different functions. There be deuce main types, transfer and series voltage regulators.Shunt Voltage governorFor a shunt voltage regulator, the regulating device is placed in parallel with the load. A opposition is placed in series with the load and the unregulated supply. The latest is varied through the control element depending on the load incumbent. This captures a volt age drop crossways the ohmic resistance in series, maintaining a constant load voltage. (Prof. Gift, 2012) habitus Shunt Voltage governorShunt Voltage Regulator Example Zener Diode Regulator recruit Zener Diode Voltage RegulatorThe zener diode is a semi-conductor diode designed to operate in the reverse-biased region. In forward bias, it functions as a normal diode but when in reverse bias, it breaks down for voltages exceeding the breakdown voltage, or zener voltage. For operation in this region a live Iz is required where the limits being the minimum and supreme veritable for the diode to operate without breaking down. (Prof. Gift, 2012)Series Voltage RegulatorFor a series voltage regulator, the regulating device is placed in series with the load and the unregulated supply. (Prof. Gift, 2012) The output voltage is sampled by a circuit that provides a feedback voltage to be compared to a reference voltage. If the output voltage increases, the comparator circuit provides a co ntrol signal to cause the series control element to decrease the amount of the output voltage, thitherby maintaining the output voltage. If the output voltage decreases, the comparator circuit provides a control signal to cause the series control element to increase the amount of the output voltage. (Electronic Devices and rotary Theory 7th Ed.) forecast Series Voltage RegulatorThere are different circuit topologies for the series voltage regulator. These will be examined next.Simple Series transistor RegulatorTo improve the current mental object of the zener diode regulator, a transistor is use in the emitter follower configuration. This acts as the series control element. The accumulator is supplied by the regulated voltage. The transistor reduces the load current capacity of the zener by a chemical element of the transistor current net profit. The zener voltage is therefore produced at the emitter. The equation IC = IB is utilise to link the collector current and the base current. Due to heights current gain, until straight very life-sized changes in IC result in that small changes in IB. This representation IZ is mostly stable. The input voltage must be greater than the diode voltage to ensued proper transistor bias. (Prof. Gift, 2012) descriptor Simple Series Transistor Voltage RegulatorIZ current through the zener diodeIC collector currentIB base currentDiscrete Voltage RegulatorA transistor Tr2 is affiliated as the series pass transistor and another one Tr1 acts as the defect amplifier. In the single transistor regulator output ripple voltage is low, but the output voltage still varies. This is due to the VBE/IC indication of the transistor. Feedback is use to correct the output. This amplifier compares the sampled voltage with a reference voltage in orderliness to generate a signal proportional to the difference. This is use to stupefy the series pass element, which wherefore varies the output voltage such that the wrongdoing i s reduced and the output voltage regulated. mannequin Discrete Transistor Voltage RegulatorThe voltage crossways the series element is (Vin Vout). The input voltage to the error amplifier is Vout Vref, where .The output voltage crosswise the series element is an amplified rendering of the input voltage,. If Vref is constant, . This is the stability factor.This operator that the ripple voltage is reduced by a factor of . The high-pitcheder the loop gain, A, the better the regulator performance. A is gain of error amplifier.The resistor R can be connected to the regulated side of the circuit to improve the design and decrease ripple voltage. Also, a capacitor may be placed in parallel to the Zener diode. Another capacitor can be placed crossways the output removing output noise and input impedance at high frequencies. A Darlington oppose may be employ as the series element. This has two transistors in a single package. The Darlington Pair increases the current gain of the se ries element, making it able to supply a larger load current if required. (Prof. Gift, 2012)Operational Amplifier Series Voltage RegulatorIn order to improve the regulator performance, the loop gain A is increased. A simplistic method of doing this is to replace the transistor error amplifier with an operational amplifier as shown in figure 6. The operational amplifier compares the reference voltage of the zener with the feedback voltage sampled by resistors R1 and R2. The Darlington Pair design is employ here and R3 connected to the regulated supply to reduce the ripple voltage. The operational amplifier (op amp) must be supplied by the unregulated input voltage. (Prof. Gift, 2012) work Operational Amplifier Series Voltage RegulatorSTANDARDSCertain standards were considered in the undertaking of this project. These areISO 90011994 Quality Systems Model for Quality Assurance in be after, Development, Production, Installation and Servicing (http//www.ttbs.org.tt/)TTS 620 2008 Occupational Safety and Health pretend discernment Requirements(http//www.ttbs.org.tt/)BS QC 7903041994 Specification for harmonized system of quality assessment for electronic components. (http//www.standardsuk.com)RISK ASSESSMENTPossible Hazards15V supply voltage. Risk of electrical shock, destroy and death.Solder fumes present. Dangerous if inhaled.The heat generated by the proponent resistor could cause burns.The tip of the soldering gets very hot and could cause relentless burns or start a fire.Clipping wires and leads may cause them to be projected into eyes and face.Steps Taken to Avoid RiskEnsured that student was properly grounded. Proper clothing and footwear were worn. No grand hanging jewellery or hair.Before energising a circuit, it was analyze by a technician.Tested conductors before handling them.Exhaust fan present in lab. Regularly stepped outside for fresh air.Clipped wires away from face of anyone present.DESIGN APPROACH AND METHODOLOGYProject Requirement s proveing and take a 9V 0.3V, 1A Series Pass Voltage Regulator using discrete electronic components.Regulator must have a voltage regulation or 5% or better and must be ply by a dc input voltage from a science lab index number supply. In addition, the regulator must incorporate temperature and over current sensing circuits which would disconnect the load from the regulator, for temperatures and currents exceeding 40 degrees centigrade and 1 A singlely.The output regulator voltage and current, together with the temperature of the series pass transistor must be converted to digital format using A/D converters and displayed on the Spartan 111 FPGA Development Board when take awayed. The following specifications must be met for the display of the variables1. The wholes of all variables are to be displayed along with the respective reading.2. The voltage is to be displayed to 1 denary point.3. The current is to be displayed to 2 decimal points.4. The temperature is to be disp layed as a whole number.5. The display of the readings for voltage, current and temperature are to automatically appear in a cyclic manner, with all(prenominal) reading being displayed for 5 seconds.6. All leading zeros are to be suppressed. (ECNG 2004 soma Project Description)This design had both an analog and a digital component.ANALOG COMPONENTThis component involved the design and construction of the Series Pass Voltage Regulator and the sensing circuitry to detect current, voltage and temperature. These demodulators were constructed to electrical pass along the values necessary for the digital component. Analog to Digital converters were designed to convert the analog output from the current, voltage and temperature sensing circuits to digital format so as to be to be read by the Spartan FPGA Board.Design of the Operational Amplifier Series Voltage Regulator participate Circuit draw of the Operational Amplifier Series Voltage RegulatorThe regulator was powered by a DC in put voltage from a laboratory power supply.The voltage apply in the design process for the purpose of tally was 15 volts.Choosing the Zener Voltage and Zener CurrentThe Zener Voltage, Vz was supplied by the Zener Diode, D1 as shown in Figure 7 above. The Zener Voltage was used as a reference voltage by the Operational Amplifier. The op amp is functioning as a derived function amplifier in this situation. The difference between the inputs at the inverting and non-inverting terminals is amplified.Gain,The output voltage, VZ zener voltageVz should be high enough so that gain would not decrease to get to the required output.If Vz was too high, i.e. the output voltage, no current would flow through D1. An appropriate value between 0V and 9V was elect, VZ = 4.8V.The IN4732 Zener Diode was chosen and the specification pall for this model was obtained. The specified test current was 53mA, and the chosen value was 40mA. This was chosen to ensure proper bias.Calculating Resistor R3The r esistor R3 was in series with the Zener Diode. Therefore, the current through them is the homogeneous.A blow resistor was chosen as it was the closest one in value available in stores.R3 = 100Calculating Resistors R1 and R2Resistors R1 and R2 formed a potential divider providing the inverting input of the op amp. This sampled the output and sent it to the error amplifier. If the value of the output changed from the designed, the voltage drop crosswise the resistors would change and the op amp input voltage would change, producing an error voltage at the output of the op amp. This error voltage will either turn on more or turn off more Transistor Tr1 and in effect Tr2 as well.The output voltage, Vo is related to the Zener Voltage by the equation beneath. change Vo = 9V and Vz = 4.8V,Therefore,If R2 chosen to be 10k, thenTherefore, R1 = 8.8k and R2 = 10k.Choosing an Operational AmplifierThe LF351 op-amp was chosen for this design. It only undeniable to function as a differential amplifier.Choosing the Series Pass TransistorThe required output current was 1 Ampere. Therefore the maximum collector current of the series pass transistor had to be greater than 1 A. high power transistor was needed, but the current gain of power amplifiers is low (approximately 40). The base current and collector current for a transistor are related by the following expression.Substituting Current gain, hfe = 40 and Ic = 1 A,The LF351 op amp could not supply this base current. A Darlington Pair arrangement was used instead. Darlington Pairs have high current gain. The high power transistor chosen was TIP31C, packaged in a TO-220 Case. The current gain, hfe1 of this transistor was specified to be between 10 and 50, so a value of 30 was used.An NPN medium power transistor, BFY51 in a TO-39 coat package, was chosen for Tr2 in Figure 6. The current gain, hfe2 was found to be 123.Hence, add up current gain of the Darlington Pairhfe1 - hfe2, i.e. 30 - 123 = 3690.Substituting Current gain, hfetotal = 3690 and Ic = 1 A,Design of the Voltage signal detection CircuitThe purpose of the Voltage Sensing Circuit was to determine the output voltage of the regulator and pass on this voltage to the Analog to Digital Converter input. The Analog to Digital Converter (ADC) chip (ADC08040 IC) had a reference voltage of 4.5V. The maximum voltage mathematical was 9.5V. Hence if the voltage output was 9.5V, the ADC08040 input voltage should be 4.5V.VO had to be stepped down by a potential divider before it could be sent to the ADC08040. It was stepped down by a factor of .Let R1 = 1k, then R2 = 1kThis voltage was sent to a social unity Gain Voltage attendant (Figure 8) and was input to the ADC circuit. (Prof. Gift, 2012)Voltage Sensor.bmpFigure Voltage Sensing CircuitDesign of the Current Protection CircuitThe purpose of this was to disconnect the load from the regulator when the current flowing through the load surpassed 1A. The protection circuit monitored the load curr ent and sent a signal to a device to disconnect the load, when the current rose to over 1A. A 1 shunt was used in series with the 9 load resistor. The shunt voltage was used to determine cut-off.An instrumentation amplifier was chosen (INA114AP) to compare the temperature sensor voltage and a potential divider voltage. The shunt voltage was amplified to increase chances of accurate finding of when to disconnect the load. A potential divider was constructed to deliver a4V, and the shunt voltage was also amplified to 4V.Potential DividerWhich employsLet R1 = 20kThe voltage from the shunt was amplified to 4V as well, and this was done by an op-amp and two resistors set up in the non-inverting refinement configuration shown below. The reference used to be amplified was 0.9V from the shunt, as this was the value which, if exceeded, cut-off and disconnect of the load was supposed to occur.For an non inverting amplifier,Vo = 4V, Vi = 0.4V,AndLet R1 = 2.4k, R2 = 8.2k.Temperature Amp I nput to INA.bmpFigure Circuit for Comparison and finding of Cut-offWhen both inputs have the same voltage crossways them, the instrumentation amplifier would have an output of zero. The transistor in Figure 10 would be turned off and the base would be at 0V.The transistor used was a 2N3904 (Ic = 200mA). If the output is non-zero, the base would be determined by a voltage and the transistor will be ON.When the output is zero (same inputs) the transistor would be OFF and the relay race roll would be grounded through the transistor. Current would flow through the coil, producing a magnetic field, and the relay would latch.When the instrumentation amp inputs are different, the output would saturate at +Vcc, i.e. 9V. The coil would an equal voltage at either end and so would have no voltage drop across it, meaning no current flowing through it. The relay is effectively OFF. There is a commonly Open (N.O.) Switch between pins 2 3, and 7 5 of the relay as well as Normally Closed (N.C.) Switches across pins 2 3 and 7 6. The N.O. switches close and the N.C. switches open when the relay latches. The load was connected across the N.C. pins. When the instrumentation amp has the same inputs, (zero output), and there is a voltage drop across the coil, current flows and the relay latches, disconnecting the load from the circuit.The relay had a rated voltage of 6V and the coil had a measured resistance of 70.5. The relays, however, were actually found to latch at a voltage of 3.2V. Therefore for calculation purposes 3.5V is used = 49.6mA was needed to latch the relay.A potential divider was used to provide the required voltage for the relay.For a resistor R3,This caused a voltage drop across the coil, larger enough to activate the coil when necessary.The voltage across resistor R3 is minded(p) by,For Ic = 49.6mA,The Base Current of the transistor is given byFor Ic = 49.6mA, and hfe = 100,To bias the base of the transistor for the 9V output of the op-amp,A 16k res istor was used. This would change VBE of the transistor. The new VBE was well within the operating range required for the resistor.Temperature Cutoff.bmpFigure Current Protection CircuitDesign of the Current Sensing CircuitThe Current Sensing Circuit determined the voltage regulator output load. This value of current would be received by the ADC input. The ADC chip (ADC08040 IC ) was 4.5V. The Current LUT could convert a maximum of 1.29A. This means when the regulator reaches 1.29A, the ADC will be at 4.5V.A 1 shunt resistor was placed in series with the load. The 9V regulated output would now be applied to a combined load of 10.Voltage drop across the shuntThereforeThe output voltage across the shunt is 0.9V. This will correspond with the maximum voltage which will give all 1s at the ADC output. Thus the voltage must be stepped up using a non-inverting op-amp. The voltage of 0.9V was stepped up to 4.5V.This means the gain is = 5Let R1 = 2k . Therefore, R2 = 8kThe potential divider voltage was passed through the amplifier and then input into the ADC.Current Sensing Circuit.bmpFigure Current Sensing CircuitDesign of the Temperature Protection CircuitThis disconnects the load from the regulator when the temperature of the Power Transistor (TIP31C) reached 40C. The Power Transistor temperature was monitored and at 40C, a signal would be sent from the circuit to a device, disconnecting the load.The LM35DZ was chosen. Its sensitivity was 10mV/C. At 40C, the temperature sensor output would be 0.4V.An instrumentation amplifier (INA114AP) was chosen to compare the temperature sensor voltage and the potential divider voltage. For a more accurate determination of the load, the temperature sensor output voltage was amplified. The potential divider delivered a voltage of 4V, and the sensor output voltage was also amplified to 4V.ThereforeLet R1 = 20kAn op amp and two resistors were used to make up a non-inverting amplifier in order to set the temperature sensor voltage to 4V. The reference voltage was 0.4V, since it is at this point cut-off should take place.For a non-inverting amplifier , ,Let R1=1k and R2=9k,Temperature Amp Input to INA.bmpFigure Amplifier Circuit for Comparison and Determination of Cut-off.When both input voltages are the same, the amplifier output would be 0V, turning off the transistor. (No VBE present). A 2N3904 transistor was used (Ic = 200mA), so the current would be large enough to latch the relay.If the amplifier output is not 0V, there would be a voltage drop across the base and the transistor would be ON.When the amplifier output is 0V, the transistor would be OFF, grounding the relay, causing current flow in the coil, latching the relay. When the amplifier inputs are at different levels, the output saturates at +Vcc = 9V. Equal voltages live on at both ends of the coil, so no current flows hence the relay is OFF. A Normally Open (N.O.) Switch exists across pins 2 3, and 7 5 of the relay. Normally Closed (N.C.) Sw itches exist across pins 2 3 and 7 6. The N.O. switches close and the N.C. switches open upon latching. Consider this load connected across the N.C pins and the amplifier has equal inputs. The amplifier output is 0V, causing a voltage drop across the relay coil, causing current flow and latching of the relay. It follows then that the load is befuddled from the circuit.For a resistor R3,R3 was used to activate the coil by creating a voltage drop across it.For Ic = 49.6mA,For biasing,A 16k resistor was used instead.Temperature Cutoff.bmpFigure Temperature Protection CircuitThis circuit was designed to relay the temperature of the power (TIP31C) to the ADC input. The ADC chip (ADC08040 IC ) reference voltage was 4.5V. The Temperature LUT could convert up to 129C. At this temperature, the ADC should be 4.5V. A Temperature Sensor (LM35DZ) in a TO-92 package used to determine the temperature. This had a sensitivity of 10mV/C. At 129C, VO = 1.29V.Sensor output voltage was stepped up us ing a non-inverting op amp by a factor of, Let R1 = 1k . R2 = 2.49k 2.5kThe sensor voltage was amplified and input into the ADC.Temperature Sensing Circuit.bmpFigure Temperature Sensing CircuitA copper strip board was used to build the voltage regulator circuit since the solderless breadboard could only take up to 0.5A.Inputs Voltage Supply of 15V Outputs Voltage Sensing OutputOV Ground modulate 9V OutputTemperature Sensing VoltageA voltage follower was used to buffer the output. The circuit was constructed as seen in figure 15Figure Complete Sensing and Cut-off CircuitDESIGN OF THE ANALOG TO digital alteration CIRCUITAn 8 bit representation was used with reference to the 4.5V signal. The analog signal was converted to a digital signal from the 3 sensing circuits using the schematic shown below. Analog to digital conversion was done using the. A resistor pack was used to provide over current protection. This circuit was built and tested for each of the three sensing circuits. A combination of LEDs was used for the input of the analog voltage. AD Converter Circuit.bmpFigure Schematic for ADC control configurationOp amps were used to buffer the inputs. The outputs were mapped onto the respective pins of the 40-pin IDE tune used to interface with the Spartan III Board.Figure 40 pin tumbler Expansion Connector (Spartan III Toolkit Datasheet)Data was transmitted using these pins to the ADC.DIGITAL COMPONENTThe FPGA board was programmed so as to use the Seven separate debunk. Xilinx ISE 7.1i was used to design and construct the display for all the variables.Design of the canonic Display UnitMultiplexers, Frequency Dividers, a Look up Table Device and a Binary Coded Decimal to 7-Segment Converter were used to create the Display Unit.The 16-bit 31 MultiplexerMultiplexers may have more than one input but usually have one output. A combination of amount is assigned to each input pin. Using these combinations, the respective input entropy is sent to the out put pin. Therefore the bits that are chosen which input data set to display. In this design, two multiplexers were used, a 4-bit 41 and a 16-bit 31 multiplexer. 31 means 3 data inputs, 16- bit means each input is of 16 bit capacity.16bit3to1muxschem.bmpFigure Schematic plat of a 16-bit 3 to 1-line MultiplexerThe 4-bit 41 MultiplexerThe 4-bit 41 multiplexer can handle up to four-spot-spot combinations of inputs. To select which input is displayed, two bits are necessary. The output was a bus of width 4 bits. It split the 16 bit output into four sets of 4 bits. The 4-bit 41 multiplexer is shown in figure 19.4bit4to1mux.bmpFigure Schematic Diagram of a 4-bit 4 to 1-line MultiplexerBinary Coded Decimal (BCD) to 7-Segment Display UnitThe BCD unit accepts four bits of data, e.g. D3D2D1D0, and determines which segments of the 7-segment display to turn on and off so as to represent the value of the input data. Figure 20 shows a 7-segment display. This type of display is common in elect ronic equipment e.g. calculators, microwaves, digital clocks. The Minimum Expressions for the BCD areSeg_a = D3D2D1D0 + D2D1D0 + D3D2 + D3D1Seg_b = D2D1D0 + D2D1D0 + D3D2 + D3D1Seg_c = D2D1D0 + D3D2 + D3D1Seg_d = D2D1D0 + D2D1D0 + D2D1D0 + D3D1 + D3D2Seg_e = D0 + D2D1 + D3D1Seg_f = D3D2 + D2D1 + D1D0 + D3D2D0Seg_g = D3D2 + D3D1 + D2D1D0 + D3D2D1For each expression, logic gate circuits were created. Each segment was then used to build the final BCD to 7-Segment Converter. The combinations of segments that would form the values were organised.The Look-Up-Table (LUT)This was used to determine which display unit anodes were to be turned on and off. There were four somebody 7-segment displays. Each one had its own anode and as such could be controlled by choosing the anode of the respective display.lut.bmpFigure Schematic Diagram of a Look-Up-Table (LUT)Modulo 4 snack barThe Modulo 4 counter was used to perform automatic cycling of the anodes to be displayed. Only one anode was on at a time for each different combination.Moduloo4counter.bmpFigure Schematic Diagram of a Modulo 4 tabulatorFor multiplexed displays, the entire display is not lit up as the same time. The characters are made up of segments which, under certain conditions, become active. Each character is displayed one at a time. Switching of characters takes place so fast it appears that all the displays are on at the same time. The move of switching is called the frequency divider (in this case 1kHz). This activates the modulo 4 counter which causes the LUT to tell apart one of four inputs to be chosen from the 4-bit 4 to 1 multiplexer to convey to the 7 segment display.The Combined Display UnitData Unit.bmpFigure Schematic Diagram of the Display UnitUpgrade of the Display Unit to display the Decimal PointThe LUT controls the switching of the anodes on the four 7 segment displays. Each 7 Segment Display has a decimal point that can be turned on or off if necessary. This was necessary in this proj ect when displaying voltage and current.For a voltage, the decimal point is on the 3rd anode, a2.09.0VFor a current, the decimal point is on the 4th anode, a3.0.99AThis means that the point will only be on when S0 and S1 select to display voltage or current, and when the third or fourth anodes are on respectively.The Essential Prime Implicants were chosen from a truth table and the minimise expression was produced as followsThe logical system Gate circuit was constructed as shown below and implemented in Xilinx ISE 7.1i. A Macro was then created and connected appropriately in the Updated Display Unit Schematic.Decimal Point Upgrade.bmpFigure Logic Gate Circuit for Decimal Point UpgradeUpgrade of the Display Unit to display the Units for each VariableThe Display Unit was upgraded a second time in order to allow the units of each parameter to showParameterUnitSymbol for UnitVoltageVoltsVCurrentAmperesATemperatureDegrees CelsiusCTable Parameters to be Displayed and their Respective UnitsThe BCD Converter had to be updated to ensure when certain select bits were chosen, the segments would align to form the unit symbol on the first anode.Since there are four select inputs, D3D2D1D0 , there are 16 possible combinations of these bits forming different outputs. 0000 to 1001 in binary star form represents 0 to 9 in decimal form. This means that there are combinations 1010 to 1111 to choose from to display a unit. 1101 was chosen for voltage, 1110 for current and 1111 for temperature.Figure Common

Effects Of Breakwater In The Civil Engineering Field Construction Essay

Effects Of counterspy In The Civil engine room Field Construction EssayProblems of wear, reduction in beach rail lines, disappearance of shorees, and purlieual impacts acquire led to the recession of troopsy economies around the world. To resolve, engineers have devised man do social organizations like groynes and piers to address a variety of bankal lines much(prenominal) as shelter, fishing, docking and coast line recession. man these problems ar resolved, novel ones emerge when jettys and jetties atomic number 18 constructed in the argonas. Clearly, mole applied science and related civilizedised technology palm be still at their rudimentary take, nonwithstanding the accompanying that these organizes have been in use since age old. In the lowmentioned hear, the searcher carries proscribed investigating into the hydro kinetics of inguens, and their engine room science aspects, with the scenery to take in insight into their importance to civil engine room fields. The detective aims to explore, evaluate and probe the impact of break pisss on engine room professions, and ways that their noesis limits or opens up new channels for plan innovation. The results argon compiled, and the researcher concludes that break piss engineering has great scope in contributing to civil engineering cognition, take into accountd that its contrive and applications be researched further.Chapter 1 IntroductionBackground and RationaleA coast is a geologic system that is subject to constant movement and reposition. Shorelines, beaches, and coastal atomic number 18as in effect affect humankind lives, and vice versa. The diverse and k nonty constitution of the coastal system is the result of processes involving roll outs, tides, currents and winds that affect the geological arouse of the coast in an attempt to keep a balance betwixt land and water. However, these argon non the precisely pointors that influence and shape c oastlines. humankind activities for economic and social purposes return towards its modifications. Natural processes, coupled with human intervention, make towards corroding, sedimentation, and accretion (Hsu, Lin, and Tseng 2007). In fact, according to French (1997), human activities bring just about intensifys that influence the environment adversely by creating new habitat and fall environment stability.Though not all changes affect the environment adversely, just the natural processes are affected by the unnatural configurations. Coasts and estuaries are not indifferent towards human intervention where a range of athleticss in their organise and environment enkindle interchange the geological, oceanological and naval system therein. Added to this status is the fact that coasts have become the perfect place for human population, industrialisation, commercialisation transport system etc. Human has, in effect, taken over to develop coastal areas to act as shelters, ports, docks, and for many different activities. The pressure for goodting human lives has inescapably changed the environment drastically towards degradation. To compensate, a host of performment strategies have been chthonictaken to operate, manage and bewilder coastal areas, to control the activities and say a balance amongst constitution and mankind (dAngremond and van Roode 2004).One of these counseling control methods is edifice of groins and jetties. Jetties and offshore walls are man made structures invented to protect coastal areas from the natural and unnatural recession of the shoreline. Breakwaters are usually built fit to the shore or at an angle to direct serious riffle action from its destructive impact on the shoreline. Jetties, on the former(a) hand, are built with the purpose to prevent erosion of the inlet or breastfeed area. Offshore groins provide shelter as they are built ground on undulation refraction and diffraction (Putnam and Arthur, 1948). Similarly, groins are structures built to face asea and at an angle to slope at the same angle as the normal beach. Groins are built at an elevation higher up datum to act as the stabilising structure and to increase the width of the beach by arresting the shore drift in part or as a whole (Paige 1950). Apart from these, coastal areas are subjected to geological problems such as natural processes including coastal erosion, deposition, sedimentation, tsunami, tidal shivers etc. These take on human intervention to protect and conserve human and natural habitat. For these purposes, an engineering field called coastal engineering has been introduced in the academic arena for enhancing the cognition and skills of professionals to develop coastal areas with minimal damage to the natural and man made environment.Coastal engineering involves developing and protecting existing coastal resistance meet with the view to predict future natural coastal processes. Comprehending t he temperament and value of coastal processes, enables engineers to devise plans and strategies to protect these processes better. Moreover, knowledge of the coastal condition helps professionals in the field to construct, facilitate and execute better breakwater bodily structure. Breakwater body structure is a field that is directly related with coastal engineering.However, it in addition has close relations with otherwise engineering fields like geology, face, environment and computer engineering. It is at bottom this context, that the researcher shall be investigating the importance of breakwater engineering and the ways it affects the engineering field.Aims and ObjectivesThe aim of this dissertation is to investigate how breakwaters and their braid affect confused civil engineering fields. The object lens is toa. Identify the various civil engineering fields that breakwaters affect b. Evaluate how breakwaters impact civil engineering professionals and c. Study how th e knowledge of breakwater construction adds to the skill knowledge of engineersScope and LimitationsThe research, in essence, is not a pure scientific confirmable study, but rather an exploratory one. The researcher is aware that in exploring the fuel-dos of breakwater engineering, he/she will have to link civil engineering techniques and skills, which makes it a successful defence structures for both, humans and maritime sprightliness. In this context, the study shall limit its addression to the various fields breakwater construction entails, and shall not delve extensive into any particular field which concerns its engineering perspectives, such as nautical life or construction engineering. However, it will maculation upon these topics byway, to enumerate on its role and effects on the engineering field. earreach readers shall find the study insightful and enlightening as it would provide the numerous aspects that coastal engineering of breakwaters impact. However, academi cs and scholars shall find the content of the study limiting as it shall not be holistically technical. Fellow students shall find the dissertation a level-headed stepping stone for furthering their research into areas of specialisation like geological engineering, construction engineering and so on. Nevertheless, the dissertation shall aim to address the social and scientific aspects of breakwaters. specify of DissertationTo accomplish the above objectives, the researcher shall endeavour to carry out the study in the following mannerChapter 1 shall introduce the flat coat and the rationale for the study. Chapter 2 shall provide the theoretical background ground on an extensive literature review on the aspects of the study outlined above. Chapter 3 shall outline the methodologies considered and the rationale for the chosen research approach. Chapter 4 will be the analysis segment in which the researcher shall evaluate the data gathered, and discuss with the aim to acquire conclus ive results. Chapter 5 shall be the conclusion to the research, go insights gained from the research, summarising whether the researcher has accomplished the objectives or not, and perhaps some recommendations for future research.Chapter 2 Literature Review IntroductionBreakwaters and similar coastal structures are human interventions, which are exposed to strong quivers, currents and other marine processes. The construction of such structures inevitably to be enduring, as head as fitting, with the natural environment. The innovation and construction of breakwaters and interrelated structures direct that knowledge of pure engineering completely is not hardheaded. In fact, it requires consideration for various empirical and theoretical knowledge for its throw. To the extent of this knowledge, the researcher is of the view that civil engineering relating to large home hydraulic structures has developed considerably. According to dAngremond and van Roode (2004), coastal probl ems of erosion, tides and currents have existed since the root system of civilisation. However, the management of these movements and problems have gained considerable attention today collectible to the commercialisation and population of coastal areas around the world. For these reasons, problems such as sea level rise, tidal asymmetry, sedimentation budget etc. need to be tackled. These are carried out by means of careful coastal defence and management practices, and engineering skills, which shall be discussed in the following sections.Coastal EngineeringOcean expands are generated by wind and propagated from the ocean towards the shoreline. The orbital motions of wave kinematics influence the depths and high of the ocean bed. Near shore ocean beds are greatly wedged by the velocities and the wave strengths. As a result, sediment beds often change in topography due to continuous impact of the fluid forces of waves. Sedimentation solvent or impact is negligible, but, in eff ect, compound the problem of sediment transportation to and away from the local beach. The scale, depth, and extent of the influence of the waves on the beach whitethorn and may not result in coastal degradation. For these reasons, detailed investigating on the continental shelves, fluid dynamics, near shore motion and variation of ocean topography are needful in order to monitor and maintain the natural barrier to land. When the problems of natural erosion and sedimentation become to a fault great to manage, measures like construction of barriers, submerged shoals, breakwaters and artificial headlands are undertaken to sustain the environment (Birbena et al 2006). Construction of this nature is triggered by defence planning, combat handling and flood prevention. In fact, coastal defence system and management require formation of framework for projects to be plotted, investigated and implemented to meet the needs of the environment and its people. These are the civil aspects of coastal engineering (French 1997). Not solo this structures like breakwaters in any case require continuous observe and protection work to predict future performance. This is carried out through coastal engineering processes such as object lessonling to estimate the changing environment and angle of write down of shorelines, site investigation to study the cycles of hydrographic and marine life status, as well as processing these to build a profile for the shorelines on which breakwaters are constructed. For example, in Iskander et als study (2007), the authors analyse and developed a monitoring model for studying coastal structure a enormous the El Agami area of Egypt. The study indicates that where breakwaters exist, shoreline fluctuates, marine life is impacted, as well as wave hydraulics. Coastal engineers need to record and study the gradual change that takes place due to the battlefront of breakwaters. Issues concerning wave distribution, shoreline sand musical theme, coastal calibration, marine survey, and effect on the throws population are taken into account. Apart from these, breakwaters besides affect the coastal structure such as villages, ports, or other such human activities (Iskander et al 2007). Furthermore, coastal engineers also need to procure that the construction of breakwaters and estuaries does not adversely affect human activities as a result of design fault of these structures. For example, in Donnell et als article (2006), the authors indicate that the breakwaters on Tedious Creek estuary on the shoreline of Chesapeake Bay in Dorchester County, MD caused substantial damage to local vessels than the benefits it provided for its shelters. The setup of breakwaters is aimed at protecting the ride dock and public piers from storms, but, in reality, the projects design fault has resulted in under performance, both in functionality and structure to benefit the locals. It is in instances such as these that coastal engineers need to be ascertained of the need and importance for breakwater structures. Similarly, breakwaters loafer also result in beach morphology that efficaciously negates the protection objective when breakwaters are constructed with limited knowledge applied relating to practical engineering. Accurate study of the shore area through cross shore distribution, bulky shore sedimentation transport rates and performance of breakwaters in advance, as well as development model calibration and validation, hydrodynamic module, wave modules etc. could positively affect the performance of the structures. Therefore, coastal engineers are responsible for studying the wave conditions, down drift side, expected erosion and current patterns behind submerged breakwater, to gauge incident waves. These mechanisms, according to Ranasinghe and Sato (2007), plunder relatively influence the function and utility of breakwaters function. Thus, coastal engineering is greatly influenced by the type and design of breakwaters structures.Construction engineeringBreakwaters and such coastal structure construction combine design and functionality with the view to protect the coastal area. The design process is similar to structural design of buildings as it entails gainful attention to functional requirements, limitations of the state of the structure, exposure, construction phases and occurrence of natural conditions. Breakwaters also require considerations for knowledge of construction sensibles including quarry stone, concrete blocks, caissons and similar types of materials to follow through to its construction. Equipments for both floating and rolling breakwaters too need to be studied and related to the specificity of the breakwaters site, function and design. The development of breakwaters also requires functional and structural monitoring of performance, with enduring characteristics. According to Camfield and Holmes (1995), coastal structures like breakwaters and jetties are influence d by long purposes of water level changes. They need to be built parallel to the entrances, in an attempt to stabilise entrances and safe navigation. Construction along the shore should be carried out with the deputation of the channel in mind, to prevent migration of channel thalweg, speedy shoaling and erosion of the coastline (Morang 1992 qt. Camfield and Holmes 1995). This is because construction of jetties and breakwaters often creates a new equilibrium for the tidal system. For this purpose, surveys of adjacent shorelines, natural bypass and the material that may ebb tidal activities need to be carried out for effective construction of the structures aligned with the regional dynamic and hydraulic processes. Construction engineering approach such as cross sectional relationship of inlet and tidal prism, as well as depths of the jetties and breakwaters, and water flows are studied in front finding the ideal balance between performance, flow conditions, and natural marine act ivities.Knowledge of construction material, as mentioned earlier, is imperative for choosing and designing breakwaters to complement the need of the local grace and environment. Since breakwaters are made up of rubble mounds or caissons or are concrete filled, knowledge of construction material adds to the skills infallible for developing structures for dispersing wave currents to minimise impact, as well as conserve energy from wave hydraulics where possible (Arena and Filianoti 2007). Not only this new construction material knowledge also provides an edge over the design and planning of the breakwater fit unit. Reedijk et al (2008), for example, indicate that the development of Xbloc by Delta Marine Consultants in 2001 has innovated armour concepts in terms of designs, interrogatorys and prototypes. Xbloc are concrete blocks intentional to armour shore protection and are being used in breakwater construction actively by engineers today. Muttray et al (2003), in their study of the suitability of Xbloc in breakwater construction, indicate that Xbloc are shaped to suit the virulent environmental conditions of waves, and such hydraulic activities. When placed interlocked with each other, Xblocs not only reduce concrete volumes, but also achieve the stability required for achieving breakwaters impact from wave loads and damage (Muttray et al 2003 Reedijk et al (2008). Added to this fact is the cost of layering breakwaters with Xbloc, which is signifi great dealtly reduced as compared to other armour blocks.Furthermore, coastal protection design and construction require development and use of probabilistic design tools to gauge uncertainties, prediction of wave impact, as well as structure stability. One of the main concerns for construction engineers is that the structures after part sustain its functionality for coastal protection, regardless of the wave conditions and noveltys of water bodies. The basic premise is that wave shimmy in foreshores and off shore areas heapnot be relied upon through model designs. In fact, it requires construction engineers to have knowledge of coastal shores by using prediction models for wave transformation to study the effect of wave height, setup and distribution before designing the breakwater and jetty structures (Muttray et al 2001 Coduto 1999). Consideration for these aspects would help design structures to achieve its long term goals, as well as bear on beach composition from long shore transport processes.Analytical engineeringBreakwaters are constructed based on engineering approaches and processes that exploit the nature of wave parameters and hydraulics. According to Huizinga (2003), breakwater engineering often fails after 5 to 10 years as a result of poor design. Engineers fail to hold the concept of breakwater designs and modelling, which uses propagation of water around of breakwater with the assumptions that water is the ideal fluid and incompressible. Waves are small in amplitude and can be analysed using the additive wave theory. Their flow is usually rotational, which can be analysed through Laplace equations. Breakwaters depth is constant and its dynamics are fixed by diffraction, refraction or consideration (Huizinga 2003).Diffraction analysis takes into account of the water height, and the interaction of breakwater and waves. The wave energy is assumed to disperse as the waves come into contact with breakwater structures, which could be understood using linear diffraction theory. In this context, a rubble mound breakwater is a polar form, with certain immersion and diameter designed to disperse wave motion. The pep pill of the waves is retarded by its action, in contact with the breakwater. The change in direction of the wave affects the sediment supply, composition, wave properties, topography, and breakwater properties. Therefore, the variables in the breakwater interaction change in response to the caisson. The underlying assumption set onwar d is that the physical movement of breakwater is associated with the wave action, the permeableness of the breakwater surface, ocean bottom composition and response of the breakwater over a long period of time (Huizinga 2003 Twu and Chieu 2000).Alternatively, wave reflection and wave run up is the model for analysing breakwater through a cross section and slopes. In this method of engineering, wave reflection is determined by the 3 guage method. Wave conditions follow of relative depth, height, steepness, and breaker index. Measurement of wave conditions is accomplished by analysing its reflection at the seaward direction when the wave surface comes into contact with the structure and foreshore. The water surface comes into contact with the breakwater as a toe and an anti knot. The wave run up and run down impact the breakwaters wave resistance. When engineers analyse the efficacy and effectiveness of breakwater, they study the angle of the incident wave, as well as its reflecti on coefficient, to determine the impact of even wave action. The analysis is critical for gauging the significance of wave run up and run down on breakwater surfaces, and inevitably its longevity. This is achieved by using the higher order wave theory for assimilating waves and horizontal seabed asymmetry. Furthermore, wave reflection measurement is determined by its dynamics such as local wave height, wave pressure, wave energy excess and wave penetration into the structure (Muttray and Oumeraci 2002). How waves break or non break is hooked on the breakwater slope and the reflection set for critical wave incident impact (Clyne and Mullarkey 2008).These analytic approaches are various forms of analytical engineering, which are engaged to evaluate the strength, longevity, efficacy and effectiveness of the breakwater functionality. Alternatives in analytical engineering, therefore, help construction of the breakwaters more effective, as they establish the baseline for stabilizat ion potential, as well as extend the life cycle of the structure (Wiegel 1962).Environment engineeringBreakwaters and jetties are engineering solutions to resolve the problem of erosion and sedimentation of shorelines. These are constructed with the view to sustain the shoreline, and in turn benefit the local human communities. Just as breakwaters and jetties affect the hydraulic system of the areas, they also produce long and short term impacts on marine life. Hydrodynamic conditions, sedimentation patterns, wave motion, physical and chemic factors tend to alter the composition and nature of the habitat. Not only this the habitat tends to change in its characteristics and life cycle due to the change induce by the presence of breakwaters. No doubt, there is an imperative relationship between biological life form and breakwater structures. Even though breakwaters are developed with the objective to provide shelter to marine life, as well as harbour for human activities, the type of alleviation, shoaling and access to aquatic floral and faunal also gets impacted when breakwaters are constructed without careful monitoring of quality, composition and marine lifecycle. In fact, construction of breakwaters for creating inlets often results in floral and faunal morphology of marine life due to the quality of sand, water chemical properties and the wave action. Water temperature, with variation through seasonal change, substantially affects the fish population, as well as other marine life forms. For example, the components of macrozoobenthos, algaes and polychaetous worms densities change (increase/decrease) according to the increasing or diminish water depth. Thus, construction of breakwater tends to adversely affect the micro constituents of marine biology (Biological effects of breakwater construction 1985).At times, colonisation of fishes within the vicinity is affected due to the elevated turbiditys and suspended solids concentrates near the breakwater. Moreo ver, sustenance of the depth of entrance to the area, and exposure of the same, can alter the sustenance level of fish populations. By streamlining the natural sand bypass, the morphological performance can be improved to simulate waves, currents and sediment transport, which corresponds with the marine life processes (Broker et al 2007). The reliability of the effect of breakwater calibration process ensures that the constructed structure does not hinder marine life forms. For this purpose, marine engineering knowledge, combined with the breakwater development know how, can help local engineers to establish dynamic coastal structures to fit within the parameters of the natural environment.Risks and failuresWhile it is clear that breakwaters have their own functionality and utility for which they are used to sustain beach line sustainability and continuity, they are also risky.The utility and functionality of breakwaters and jetties depend on the model, material and computer simul ation upon which they have been based. Measurement for their horizontal and vertical fluid velocities, breakwater composition (porous or non porous), energy dissipation rate and modification intensity, all stick out towards its impenetrable nature. However, any variation and standard deviation in the design such as surface elevation, velocity variation, calibration, and structure permeability can result in its wear and breakage. According to Kobayashi et al (2007), breakwater permeability can affect its federal agency in the beach zone, effectiveness in eliminating serious wave impact and structural longevity. In fact, breakwater transformation as a result of wave load, pressure and velocity can lead to shattering. This is dependent on the design of the breakwater and its sensitivity and test against breaker ratio. Steepness of seaward slope, wave breaking motion, and wave parameters greatly influence the structure, to the extent of predicting its durability (Kobayashi et al 2007) .In fact, Oumeraci et al (2006) are of the view that analysis of saturation due to liquefaction phenomena in sand gloom structure tends to increase the risk of structural failure. Vertical breakwaters, especially, are unprotected to permanent deformation of the subsoil, which leads to irreversible strains at the peak stress level. As a result, breakwaters structures can give way to wave load induced by the fluctuation in pressure along the seabed and the decoct pressure in the concrete itself. Failure of such monumental nature affects the stability, composition, and cyclic mobility.Failure is also the result of the nature of the breakwater structure, whether it is designed for offshore or onshore coastal defence. It is greatly influenced by the depth, and nature of the sand composition underneath the seabed upon which the breakwater is constructed. The relative density of the sand, pressure of the fluid, as well as storm yield, all contribute towards its endurance (Oumeraci et al . 2001).Apart from these physical risks and failures, breakwaters are also vulnerable in terms of their effect on marine life forms. Changing chemical composition due to displacement of fauna colonisation, as well a toxicity of the structures along the sediment banks, can result in breakwater biota fluctuations. While the human benefits of breakwaters last for 5 to 10 years, the long term effects of marine life cycle and fishery can alter the nature of the coast altogether if careful engineering approaches are not undertaken for the construction of breakwaters (Biological effects of breakwater construction 1985).ConclusionThe above discussion has been carried out with the view to provide an overview of the relationship between breakwater construction and its impact on engineering fields. While engineering is a vast discipline, in this study the researcher has included engineering fields related to the construction of breakwaters and their maintenance. The discussion indicates that breakwater structures are not entirely coastal construction monuments, but have multidimensional impact on the physical, biological and human life. For this purpose, engineering and designing of these structures need to be analysed, planned and implemented with care, for its impact.Chapter 3 Research MethodologyThe nature of research problem determines the choice of its methods. Before one chooses the research method, its objectives, audience and underlying assumptions should be justified. The methodologies are then weighed and evaluated to justify for its choice. The theoretical perspective of the study should provide the background reality, as well as the constituent for increasing readers knowledge. inside these dimensions epistemology is concerned with providing a philosophical grounding for deciding what kinds of knowledge are possible and how we can ensure that they are both adequate and lucid (Crotty 1998). The epistemology, therefore, allows the researcher to decide the ap plication and the underlying academic literature that is required for adding knowledge to the existing consciousness. Generally, there are two options objectivism and constructionism. The objectivistic approach entails the investigation of existing knowledge and spanning it to extend its consciousness. The aim is to discover the objective truth. On the other hand, the constructionist approach entails the research which requires interaction with the world, and finding the truth in the process.Underlying the constructionist approach is the premise that research endeavours need to explore views from bigeminal angles before deciding on the objective truth. This approach is grounded in the soft methodology (Crotty 1998 qt. Levy 2006). Alternatively, researchers in the applied field usually life research based on quantifiable methods that entail action research and evaluations for studying particular aspects and issues. The premise for choosing action research is to endeavour to conf iscate the reality with certain degree of control on the phenomena under research. Although, the nature of the coastal engineering field mandates that research activities be subject to quantitative empirical methods whereby researchers carry out extensive action research strategies and processes.However, in this case, the researcher has opted for the qualitative approach as it complements the nature and topic under discussion. Whereas the study of breakwater is pragmatic, the exploration of its connection and impact on the engineering field is qualitative in nature. Furthermore, to understand the implications of breakwaters and their effect on civil engineering profession, investigation into the subjective views of experts within the field is required, rather than winsome in empirical research to achieve its findings.Having said that, the researcher is also aware that qualitative research requires a paradigm for basing the enquiry. According to Gummesson (2000), a paradigm is a ver y general conception of the nature of scientific endeavours within which a given enquiry is undertaken (p.18). It is a world view which allows the researcher to base his/her research outcomes and understanding. Research paradigms can be carve up into positivist, which is characterised by the world as the external dimension and must be researched through facts and fundamental laws, and by studying concepts through sampling. On the other hand, the phenomenological paradigm involves the social construction of the subject, and characterised by the understanding of the totality of the situation by investigating the issue through established phenomena. For the current study, the researcher shall adopt the phenomenological paradigm for analysing the effect of breakwaters on the engineering field. The rationale is based on the premise that even though through the course of discussion some technical and practical aspects shall be discussed, the analysis shall regard the ideology, finality logic and utility behind breakwaters and their link with civil engineering fields. While the researcher is aware that the phenomenological paradigm is not suited for engineering and scientific research, he/she also has the understanding that research of this qualitative nature