Breakwater Essay -- Marine Infrastructures

Conventional breakwaters are massive in size and generally associated with large scales in construction materials, effort and cost. The development of large breakwater schemes with poor design and management may trigger a number of adverse effects on neighbouring coastal environment, e.g. large amount of wave reflection, alteration of beach morphology, water quality deterioration and change of marine ecosystem. To alleviate the above problems, various ingenious designs of light-weight breakwaters have been proposed, tested and constructed in the past as alternatives to the conventional breakwaters, one of which is the free surface breakwaters. Free surface breakwaters are essentially barriers located near the water surface where the energy flux is maximal. The total height of such barriers is usually far smaller than the water depth which helps water circulation around the structures. These barriers can be constructed on a group of piles driven into sea floor, or held floating as floating breakwaters. Wave reflection and dissipation are the primary energy damping mechanisms inherited by these barriers. Free surface breakwaters are most suitable to be built at semi-protected sites where the soil condition is poor. The present investigation is motivated by the construction of bottom-mounted semicircular breakwaters in Miyazaki Port (Japan), Tianjin Port (China) and Yangtze River Estuary (China) for sea defence. Extensive studies on such breakwaters were undertaken by several researchers from Japan, China and India, e.g. Tanimoto et al. (1989), Sasajima et al. (1994), Xie (1999), Dhinakaran et al. (2002), Yuan and Tao (2003) and Zhang et al. (2005). Although a number of studies have been reported in the literature associated with... ...hat comprise a large number of discrete constituents for energy dissipation. Examples of such breakwaters are multiple-layer breakwater (Wang et al., 2006) and porous-pile breakwater (Hsiao et al., 2008). These structures are usually highly porous to water flow, resulting in relatively small wave reflection and the horizontal wave forces on the structures. One of the major concerns in the design of marine infrastructures is the navigation safety adjacent to the breakwaters. In many cases, it is important to keep the amount of wave reflection in front of the breakwater to the minimal. The majority of the abovementioned breakwaters mainly serve as wave reflectors. It is hoped that the free surface semicircular breakwater considered for the present research would yield better performance characteristics by producing low reflection and desirable wave attenuation.

Anatomy and Physiology Comprehensive Final

The 2000-Meter Row: A Case in Homeostasis Adapted from the National Center for Case Study Teaching in Science* by Nathan Strong At the start 1. Recall that Jim's heart and respiratory rate are increased, he was sweating and that his mouth was dry before the raise began. Explain what is happening to his autonomic nervous system (including which division is the most active) and specify exactly how those ANS responses are creating the symptoms noted.What changes do you think are occurring in the digestive and urinary systems at this time? (8 points) In his autonomic nervous system, the sympathetic division was the most active before and during the race because it is what prepares your body for extra somatic activity. It activated as he was preparing for the race because he was becoming more stressed and nervous. It started in the sympathetic center located in his hypothalamus, and from there led multiple places causing his symptoms.His increased heart rate started when the cardioacceler atory center in the Medulla oblongata sent impulses down the spinal cord to the preganglia and ganglionic neurons of the Cervical and T1-T3 spinal cord segments, then the cardiac and pulmonary plexuses, which then leads to the heart and increases the rate at which it pumps. At the same time, his respiratory rate increased similarly. Impulses sent down his spinal cord through the preganglia and ganglionic neurons of the Cervical and T1-T3 spinal cord segments, to his cardiac and pulmonary plexuses, which then led to a higher breathing rate.The sweating is another response to the activation of his fight or flight mode, the sympathetic division. His body perceived his nervousness as a sign that there is a threat and he may begin to exert more energy and in turn become hot, so it prepares for that by sweating in an effort to cool his body. His postganglionic fibers began to innervate his sweat glands by releasing acetylcholine and activating his muscarinic receptors. The cause of his dr y mouth was his preganglionic fibers which ascend to his superior cervical sympathetic ganglia and inhibited his salivary glands.Finally, during a time where the sympathetic division of the ANS has been activated, the blood flow to the digestive system will be restricted and temporarily restricts digestive activities. Then, in the urinary system, kidney functioning is reduced, the detrusor urinae muscle of the bladder wall relaxes as the internal urethral sphincter contracts, which overall suspends the urinary system. One minute in 2. Consider the power stroke of rowing from the perspective of the actions at the shoulder and elbow joints.Create a table that shows what muscles, under control of what nerves, pull on what bones to cause each action. Be sure to include the action of fixating the shoulder blade and pulling it back. The first column for your table must be the action. This column should describe what is occurring in both English and anatomical terminology (see chapter 9). But only include those actions needed to row the boat. Points will be deducted for unneeded actions. See example below*. (15 points) Action| Muscle| Origin | Insertion | Nerve|Maintain Handle Height:Angular motion of the humerus at the shoulder| Deltoid| Clavicle, spine and acromion of scapula| Deltoid tuberosity of humerus| Axillary Nerve| Pulls Together The Shoulder Blades:Adducts and rotates scapula downward| Rhomboidmajor and minor| Spinous processes of C7 and T1-T5| Medial border of scapula| Dorsal Scapular Nerve| Pulling The Handle Toward Your Body:Flexes the forearm at the hinge joint of the elbow| Biceps brachii| Long head at supraglenoid tubercle of the scapula through the intertubercular groove, short head at coracoid process of scapula| Radial tuberosity| Musculocutaneous Nerve| Pushing The Handle Away From Body:Extend the forearm at the hinge joint of the elbow| Triceps brachii| Lateral head at posterior side of humerus, medial head at distal radial groove of humerus, lo ng head at margin of the glenoid cavity| Olecranon process of the ulna| Radial Nerve| 3. Now, pick one of those muscles and trace their control from the appropriate brain structure all the way to the NMJ. Be sure to include all intermediate structures, synapses, plexuses and nerves. (8 points) Movement of the deltoid begins in the cerebrum of the brain, but more specifically: in the frontal lobe, the premotor cortex is relaying instructions to the primary motor cortex.The primary motor cortex contains the upper motor neurons whose axons will travel down the pyramids of the medulla oblongata and synapse on lower motor neurons in the anterior gray horns of spinal cord segments C5-C6. From there, the ventral rami of spinal nerves C5-C6 form the superior trunk of the brachial plexus, which splits into two divisions. We will follow the posterior division that supplies to extensor muscles. This posterior division then runs into the posterior cord from which the axillary nerve is derived. The axillary nerve’s motor end innervates the deltoid through its neuromuscular junction. 4. Rowing full speed is putting maximum demands on Jim's muscles.What metabolic process is providing most of the energy for Jim’s muscles at this point and why do Jim's muscles feel like they are burning? (5 points) As Jim’s muscles are at maximum demand, his mitochondria are unable to produce the needed ATP through aerobic respiration because oxygen is unable to diffuse fast enough into his muscle fibers. At this time anaerobic glycolysis takes the lead as the metabolic process producing two-thirds of the ATP needed so that his muscles can continue contracting. However, during glycolysis, there is soon more pyruvic acid produced then can be used at the time. That pyruvic acid gets converted to lactic acid, which is an organ acid that is able to dissociate in body fluids.The lactic acid breaks up into hydrogen ions and negatively charged lactate ions that lowers intracellul ar pH and causes a burning sensation in his muscles. 5. Trace the sensation of pain in Jim’s left Quadriceps muscle from the receptor to perception in the brain. Be sure to include the nerve and all intermediate structures involved in relaying this sensation. (8 points) When Jim felt a pain sensation in his Quadriceps muscle, it began with the local nociceptors being activated. A signal was then transmitted from his nociceptor neurons, through the dorsal root ganglia where the cell bodies are located. Then, the signal is processed through the Central Nervous System, reaching the interneurons and being relayed to the brain through the lateral spinothalamic tract.The lateral spinothalamic tract and interneurons end in the ventral nuclei of the thalamus, where third-order neurons process and relay the painful sensation to the primary sensory cortex. 6. Since the end of the first minute, Jim has decreased the demands his muscles are making. What metabolic process is now providing most of the energy for his muscles? What muscle protein has been storing Oxygen for this activity? (6 points) Now that Jim has decreased the demand on his muscles, they are able to function primarily on aerobic metabolism, breaking down pyruvic acid to produce ATP. However, he is still working at a high level of energy, which will require a lot of oxygen. Myoglobin, an oxygen-binding protein helps to supply some of the needed oxygen for aerobic respiration. 7. What energy molecules is Jim’s body consuming?What might Jim have done the night before to increase his endurance today? (4 points) During the race, Jim was using broken down glucose from the glycogen reserves in his sarcoplasm. A good way to improve endurance during a race is to eat a meal full of complex carbohydrates. These carbs provide energy the next day because they take longer than almost any other food to be broken down, and as they are slowly digested they continue to provide energy throughout the race. 8. Id entify the components of the homeostatic control system that is keeping Jim’s body cool and then explain specifically how that system works, including the messaging system involved. (8 pts)The homeostatic control system that maintains body temperature is called thermoregulation. The system has a control center known as the thermoregulatory centre that’s located in the hypothalamus. There are two sets of temperature receptors that send information to the control center. One monitors the core by looking at the temperature of the blood that flows through the brain, and the second monitors the external temperature through the receptors in the skin. Once his body temp rose above 37. 20C, the higher temp stimulated his heat loss center. There are then two effectors that were at work lowering his body temperature. First, the smooth muscle of his arterioles supplying the skin relaxed, which caused vasodilation.Second, his sweat glands became more active and began cooling his s kin surface. Finally, as his body regains its normal body temperature and that information gets to the hypothalamus, the control center becomes dormant. 9. Recall that Jim could see boats on either side of him. Trace the image of those boats to perception. (Include all focusing, transduction, transmission and perception processes and structures) (10 points) As Jim was rowing and watching the boats beside him, the first step was reception. This happens as light is entering his eyes and the lens is focusing it onto the fovea of his retina, which is where his photoreceptors are located.The second step is transduction, during which the rods and codes are converting the electro-magnetic energy into electro-chemical nerve impulses. This is the step that allows the light energy to move across our optic nerve and be processed in the brain. That step where his nerve impulses are sent to his primary visual cortex is called transmission. The next step, selection, is where feature detector cell s are working to break up the image. Then during organization, through multiple visual perceptual principles, the information is being reassembled into a way that we can understand it. The image goes to both our temporal and parietal lobes so that we can identify and determine where the object is located.Finally, the interpretation stage is where the boats he saw where both identified and given meaning. 10. Jim has stopped rowing and his muscles are now at rest. Why are his heart and breathing rates still so high? (3 points) His rowing competition took a lot of energy and oxygen. Once it was over, his body needed to restore what was used during his exercise. A higher breathing rate brings more oxygen into the lungs, and a higher heart rate pumps blood so that the oxygen can get into the blood stream then into the muscles. Oxygen in the muscles will allow restoration of the ATP levels. 11. Why did Jim lose 4 pounds during this event? What tissue/body material was lost and will this b e a â€Å"permanent† weight loss? (5 points)About half a pound out of Jim’s four-pound loss could have been the glycogen reserves in his muscles that were depleted, but most of the weight loss was due to water loss while he was sweating during the race. Both of these things will be restored in his body though, causing the weight loss to only be temporary. Works Cited â€Å"Breathing Rate And Heart Rates After Exercise. † LiveStrong. Demand Media, Inc. , 14 Jul. 2011. Web. 1 Dec. 2012. â€Å"Chapter 6 – Visual Perception. † Oup. n. p. , n. d. Web. 1 Dec. 2012. PDF file. â€Å"Homeostasis. † BiologyMad. IHW, Mar. 2006. Web. 1 Dec. 2012. â€Å"Keeping Your Autonomic Nervous System Healthy. † DrWilson. The Center For Development. June 2011. Web. 27 Nov. 2012. â€Å"Muscles Used In A Rowing Machine. † LiveStrong.Demand Media, Inc. , 3 May, 2011. Web. 28 Nov. 2012. â€Å"The Body Can Use Glycogen As An Energy Source When Aerobic Exe rcise Lasts How Long? † LiveStrong. Demand Media, Inc. , 7 Jul. 2011. Web. 30 Nov. 2012. â€Å"The Brachial Plexus. † UpState. Health Science Center, n. d. Web. 28 Nov. 2012. â€Å"What Is Most Of The Weight Loss From When Individuals Lose Weight Quickly? † LiveStrong. Demand Media, Inc. , 28 Apr. 2011. Web. 1 Dec. 2012. â€Å"Why Do You Sweat When You’re Nervous? † WiseGeek. Conjecture Corporation, 15 Nov. 2012. Web. 27 Nov. 2012. â€Å"Why You Should Load Up On Good Carbs The Night Before A Big Game. † FitDay. Internet Brands, Inc. , n. d. Web. 30 Nov. 2012.

Social Responsibility Of A Business - 1444 Words

Introduction Cohen wrote extensively on the work of Drucker especially in the areas of business and nonprofit management. However, Cohen’s article on social responsibility drew a lot attention from other scholars like Friedman. In view of this, this paper will discuss and define the concept of social responsibility of a business to its workers, stakeholders, and society; how the perspectives align with that of Drucker; comparing Cohen’s opinion with that of Friedman and finally determines which of the two individual’s opinion best aligns with the current business climate promoting a green environment. Concept of social responsibility According to Cohen (2009), the concept of social responsibility entail that â€Å"every organization must assume the full responsibility for its impact on employees, the environment, customers, and whomever and whatever it touches† (p. 31). 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I do not agree with the following quote by Milton FriedmanRead MoreThe Social Responsibility Of Business1463 Words   |  6 PagesIn his paper titled The Social Responsibility of Business is to Increase Its Profits†, Milton Friedman addresses the key issue of weighing social responsibility against profit maximization for shareholders. This conflict is the basis for Friedman’s whole paper, as he explores the two sides of the situation. In order to set up his argument, Friedman lays down a framework by explicitly stating a certain premise. This is that businessman view â€Å"social responsibility† and profit as not being mutually

My Personal Philosophy Of Nursing Education - 1075 Words

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A Short Note On Pricing And Non Pricing Strategies

A. Explain what type of market structure is presented in the movie. Explain the types of strategies Joe Fox and Kathleen Kelly use to compete and maintain market power. Differentiate between pricing and non-pricing strategies (use Chapter 7 in Stengel’s textbook). You can expand and talk about potential strategies in the bookselling business even if they were not explicitly addressed in the movie. All companies need to be competitive in order to survive. Not only do they have to come up with a competitive plan that will attract new customers but also to keep current customers. Just like the movie You’ve Got Mail with Tom Hanks (Joe Fox) and Meg Ryan as Kathleen Kelly. They each have their own bookstore located near each other in New York. 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Manfold Toy Essay free essay sample

The debate regarding the role of business in society has persisted over decades. Given the increase in corporate scandals and anti-globalization movements, business corporations are being increasingly pressured to engage in activities or conditions that relate to the company’s core operations. The Increasing institutional pressures to behave as good citizens coupled with the relentless pressure from financial markets to perform, poses a challenge for managerial decision making. In this essay, I will provide my definition of   good business ethics, describe the specific challenges that management faces when engaging in international business, express how Manfold Toy’s corporate governance failed to take part in ethical business behavior and provide recommendations to strengthen these governance features to ensure future ethical business practices. b. Discussion of your main ideas (Weight: 40%): about 1. 5 page Definition of good business ethics Good business ethics are the application of a moral code of conduct that guide the way a business behaves. Ethical business practices include assuring that the highest legal and moral standards are applied and observed through actions, decisions and relationships within the business community. This definition runs hand-in-hand with socially accepted ethical principles; business actions must be judged in the context of society’s standards of what is ethically right and wrong. Businesses have a social responsibility to use this ethical behavior while making decisions and taking actions in order to enhance societal well-being. Management accountability to stakeholders for profit making A stakeholder is an individual who has interest in company performance, hence is an employee of that company. They also have legal decision-making rights and may control project scheduling and budgetary issues. Given the responsibilities of stakeholders, management should provide full and timely disclosure of relevant information to shareholders and engage in transparent business practices. Socially responsible business behavior Socially responsible behavior: discretionary decisions and actions taken by individuals in organizations to enhance societal well-being. In taking decisions and actions that enhance societal welfare, these individuals are putting their virtues in the service of the common good. This requires, however, the capacity to take into consideration the situational constraints, the interdependencies, and the multiple, often conflicting demands of various stakeholders. In the long term we believe that shareholders will benefit when stakeholders needs and concerns are more integrated in strategic decision making. This recognizes the complexity and interdependence of the organization and its stakeholders, including shareholders, and is in line with the importance of quality connections with the larger community Balance theory of wisdom proposes that people are wise to the extent they apply their intelligence, creativity, and wisdom toward a common good by balancing their own interests, the interests of others and the interests of organization; over the long and short terms; through the infusion of values, to adapt, to shape and select environments. CSR: the integration of social and environmental concerns in the daily operations and in the interactions with stakeholders on a voluntary basis. Specific challenges for managing business that arise from doing business in other countries Although legal restrictions present difficulties for international managers, the most challenging adjustments for management are the different political structures, economic conditions, culture-driven codes of ethics and localized customs that have been established in the country they decide to do business. Before proceeding with the idea of doing business in another country, it needs to assess the economic condition that exists in the market. It is imperative to have prior knowledge about the return for your investment in the country you are considering. More importantly, international companies are confronted with a variety of decisions that create ethical dilemmas for decision makers; committing an act that is unacceptable in the home country might be expected and necessary in the host country. For example, in a country where political structures put limitations on certain business transactions, bribes will be offered to government officials to speed up the approval process. When your company makes such payments, it is encouraging a local system of corruption through unethical behavior, which is not always considered illegal. Smaller gifts, of a size that would not normally influence a major decision, are considered ethical in some societies and may be legal under local and U. S. laws. c. Examples and details from case (Weight: 40%): about 1. 5 page 3 examples of unethical behavior 1. Delaying manufacturing equipment to reduce costs (built reputation from using latest equipment and top-grade raw materials) (Jiaxong’s plan) (denied that there was risk) 2. Extending long-term credit and signing secret agreements with distributors to buy-back anything not sold within 12 months (daniel’s plan) (denied that there was risk) 3. Rating that Manfold Toy’s stock had outperformed (bribe by Daniel to Francis in Thailand) 4. Joseph and Ken’s relationship (Joseph sold Ken’s son vintage car at huge discount†¦Ken gave year end audit 5. Fred How does it violate my definition of good business ethics Weaknesses of corporate governance mechanisms Contributes to unethical behaviors described above Recommendations to strengthen governance features Keep the unique ethical climate of each market in mind when crafting your code of ethics to ensure that it is relevant to the international arena. Make adherence to the code a priority among executives and management to set an example for the rest of the organization. Post the code of ethics in high-traffic areas at the home office, branch offices and foreign subsidiaries. Ask managers to justify their ethical decisions in foreign markets according to the code of ethics to ensure that managers take it seriously. According to business-ethics. org, it is important to include international employees in the process of creating your ethics program. This will help to make your ethics programs as relevant as possible in foreign markets. Step 2 Follow local customs and traditions at your discretion. Decide on a case-by-case basis which local customs to follow and which to avoid when it comes to victimless issues. Use your code of ethics when dealing with humanitarian and environmental issues, such as child labor or deforestation, and use your discretion in issues such as bribery or wage considerations. You may, for example, decide to offer cash gifts to government officials in a country where there is no other reasonable way to gain a foothold in the market, but you may decide not to enter a country if raw materials must be gained through suppliers who use indentured labor. Related Reading: How to Measure Employee Ethical Standards Step 3 Apply your standards equally in all markets, and among all subsidiaries. Stick to your standards, whatever they are. If you have a policy of following your home countrys ethical standards around the world, be prepared to turn down opportunities in markets with unfavorable ethical climates. Respond courteously and respectfully if you do have to turn down an opportunity. Do not act superior or derisive when turning down unethical opportunities; simply explain that your companys code of ethics forbids you to engage in that type of behavior, and that you would like to keep the business relationship intact for future opportunities. If your policy is to take local customs into consideration when making ethical decisions, do not shun a country immediately because of differences from your home country. Make sure that all managers and decision-makers understand your commitment to ethical standards. Step 4 Make company-wide ethics training a regular activity, in addition to administering comprehensive ethics training programs for new hires. Use training sessions to highlight actual areas of concern in your organization, citing specific examples as often as possible. How will they correct these unethical behaviors and practice ethical business management in the future?

Learning Styles Essays (578 words) - Education,

Learning Styles Every person learns differently. From kindergartner to postgraduate levels, only students can do the earning, and they do it in their own particular, individual learning styles. Some children pick something up the first time they hear it. Others may not grasp a concept until they've had the chance to see it in print, or to write it themselves. These people all use different learning modalities. There are four basic ways in which people learn. Auditory learners gain information with the use of their ears. Visual learning takes place with the use of our eyes. Kinesthetic learning derives from the use of our muscles and skin. Photographic learners use all of their senses to obtain information. Everyone gains information by all of these means, yet some people tend to favor one aspect over another, or rely more heavily on one combination. For example, writing down (kinesthetic) what we hear (auditory) combine two modalities or styles. A majority of people learn visually, so visual aids are a must. It is best to teach to all of the first three modalities when introducing a lesson with emphasis on the visual. You can use learning modalities in your teaching by finding out how individual students learn, and letting them know what their strongest modes are. They can learn to use this information for themselves, and you can encourage them to strengthen modalities that may be weak. The best thing that teachers can do is provide instruction, tools, and an environment that allows them to learn through the channels that work best for them. Teaching to learning styles can be viewed as using a variety of methods to reach all students. Teachers who desire to enhance learning to optimal levels will want a deeper understanding of learning styles and ways to accommodate them. This involves an awareness of learning style theories, an understanding of one's own learning preferences, and knowing how to match instruction to learning styles. When we speak of learning styles, we most often describe sensory modalities through which individuals receive, process, store, and communicate information. They categorize students as visual, auditory, or haptic (or kinesthetic) learners, while acknowledging that these labels indicate preferences and strengths rather than absolute descriptors. For example, university students, studying the same challenging article, might use color to highlight and separate main ideas (visual), explain the main concepts to a friend (auditory), or manipulate ideas written on notecards to show relationships (kinesthetic). While these students approach the reading assignment differently, they share the experience of being actively engaged in the task. The most important message in all these learning style classifications is that students' knowledge of their particular learning styles can lead to more productive studying. Conversely, difficulties arise when there is a lack of self-understanding and appropriate study strategy development. (Levine, 1997) Research on learning styles implicates that instructors should teach to the individual styles of their students, at the post secondary level this suggestion cannot translate to separate lessons for individual students. We can make meaningful pedagogical changes such as incorporating additional visuals into lectures or providing handouts with sufficient margins for note taking. With increased sensitivity to the variety of learning styles in our classrooms, we can direct our students toward self-understanding. We can share the lessons of scholarship that we have learned on our own academic journeys. The result will be increased numbers of students who are actively engaged participants in our intellectual community. (U-Penn.com, 1998) Education