Overview The human body can regulate its function responding to the change of its environment. Temperature is one of the factors which can modulate the body function. Refer to the related lectures and other resources; answer the followed questions (question 1-5 need at least 400 words together): Q1 In case of cold weather how does human body detect the coldness? Explain the signal detection, delivery, processing and involved cells, tissues and organs.
The chief brain mechanisms for heat regulation are established … Read More...
EME 4003 Projects (15% of the Final Grade) There are two design projects in this class which are presented as Projects 1 & 2 below. Grades for the projects will be assigned on a group basis. Peer evaluations of each project will be required. These peer evaluations in addition to evaluation by the instructor are used to evaluate the individual participation on the group projects and will affect each individual’s grade. No late projects will be accepted. A quality design project could earn up to 5 extra points to the final grade for all the group members. The design projects should be geared towards real-world machine element design. Attention should be given to functional analysis, materials selection, critical point analysis, failure mode analysis, and application of knowledge gained during your mechanical engineering courses. Each group should consist of 4 students. Please talk to your classmates and form your group by Thursday, September 10. I will form and assign the teammates for the students with no group. Project 1 (3%): Due October 15 Each member of the group should report on one of his/her favorite machines or mechanisms and provide a one-page description (approximately 500 words) along with a picture of the machine/mechanism(it is helpful if each group member brings the actual component to the group meeting). The paper should include the innovative part of the mechanisms, explain the forces acting on one or more of the components and the maximum stress locations. Each group should review the reports submitted by its members and provide feedback. The final reports with the comments from each teammate should be submitted to the instructor by October 15.. Project 2(12%): Due December 10 In this project, your group will be responsible for analyzing an existing engineering product (a piece of equipment with multiple mechanical components at work). Your group is responsible to evaluate the product and determine the safety factors in the design (if any) and suggest the minimum values for the design parameters (geometry, dimension, material, etc.) to reduce the cost. Project Guideline Step 1: Select an engineering product (consumer product or fixture) that is subjected to constant and variable (fatigue) loads. For examples: tools in the garage, the pedal crank on your bike, automotive components (i.e. shock tower on your vehicle), circular saw, etc. Brainstorm ideas with your teammates and select the product. Step 2: Here are the tasks a) Analyze it completely for failure modes b) Investigate the loads acting on the components, their variations, and the location of the maximum stresses (several locations) c) Estimate the stresses at these locations and draw Mohr’s Circle for these locations. You may need to create a spreadsheet in Excel/MATLAB to preform your calculations. All values in the spreadsheet or program must be clearly labeled. Show all intermediate steps, results, as well as the final output. d) Are there any Safety Factors required at these locations? e) If a Safety Factor of 1 was used, estimate the new geometry, dimensions, etc. Step 3: Develop conclusions and recommendations about the product (discuss and comments about the design, can it be improved?) State all assumptions you made in your analysis that might have accounted for possible inaccurate answers. The final report should be at least 1500 words including introduction, discussion, and conclusion with any pictures, figures, equations, tables, and spreadsheets. Reference: INCORPORATING OPEN-ENDED PROJECTS INTO A MACHINE ELEMENTS COURSE, Kathy Schmidt, the University of Texas at Austin, Matthew Campbell, University of Texas at Austin, Proceedings of the 2005 American Society for Engineering Education Annual Conference & Exposition
What is the prime purpose of selecting a composite material over material from the other family groups? MODULE 3 – STRUCTURE OF SOLID MATERIALS The ability of a material to exist in different space lattices is called a. Allotropic b. Crystalline c. Solvent d. Amorphous Amorphous metals develop their microstructure as a result of ___________. a. Dendrites b. Directional solidification c. Slip d. Extremely rapid cooling In an alloy, the material that dissolves the alloying element is the ___________. a. Solute b. Solvent c. Matrix d. Allotrope What is the coordination number (CN) for the fcc structure formed by ions of sodium and chlorine that is in the chemical compound NaCl (salt) ? a. 6 b. 8 c. 14 d. 16 What pressure is normally used in constructing a phase diagram? a. 100 psi b. Depends on material c. Ambient d. Normal atmospheric pressure What line on a binary diagram indicates the upper limit of the solid solution phase? a. Liquidus b. Eutectic c. Eutectoid d. Solidus What holds the atoms (ions) together in a compound such as NaCl are electrostatic forces between ___________. a. Atom and ion b. Covalent bonds c. Electrons and nuclei d. Neutrons Diffusion of atoms through a solid takes place by two main mechanisms. One is diffusion through vacancies in the atomic structure. Another method of diffusion is ___________. a. Cold b. APF c. Substitutional d. Interstitial Give a brief explanation of the Lever rule (P117) Grain boundaries ___________ movement of dislocations through a solid. a. Improve b. Inhibit c. Do not affect Iron can be alloyed with carbon because it is ___________. a. Crystalline b. Amorphous c. A mixture d. Allotropic Metals can be cooled only to crystalline solids. a. T (true) b. F (false) Sketch an fcc unit cell. Metals are classified as crystalline materials. Name one metal that is an amorphous solid and name at least one recent application in which its use is saving energy or providing greater strength and/or corrosion resistance. MODULE 4 – MECHANICAL PROPERTIES Give two examples of a mechanical property. a. Thermal resistance b. Wear resistance c. Hardness d. Strength Scissors used in the home cut material by concentrating forces that ultimately produce a certain type of stress within the material. Identify this stress. a. Bearing stress b. Shearing stress c. Compressive stress An aluminum rod 1 in. in diameter (E =10.4 x 106psi) experiences an elastic tensile strain of 0.0048 in./in. Calculate the stress in the rod. a. 49,920 ksi b. 49,920 psi c. 49,920 msi A 1-in.-diameter steel circular rod is subject to a tensile load that reduces its cross-sectional area to 0.64 in2. Express the rod’s ductility using a standard unit of measure. a. 18.5% b. 1.85% c. 18.5 d. (a) and (c) What term is used to describe the low-temperature creep of polymerics? a. Springback b. Creep rupture c. Cold flow d. Creep forming MODULE 7 – TESTING, FAILURE ANALYSIS, STANDARDS, & INSPECTION Factors of safety are defined either in terms of the ultimate strength of a material or its yield strength. In other words, by the use of a suitable factor, the ultimate or yield strength is reduced in size to what is known as the design stress or safe working stress. Which factor of safety would be more appropriate for a material that will be subjected to repetitious, suddenly applied loads? Product liability court cases have risen sharply in recent years because of poor procedures in selecting materials for particular applications. Assuming that a knowledge of a material’s properties is a valid step in the selection process, cite two examples where such lack of knowledge could or did lead to failure or unsatisfactory performance. Make a sketch and fully dimension an Izod impact test specimen. Which agency publishes the Annual Book of standard test methods used worldwide for evaluation of materials? a. NASA b. NIST c. ASTM d. SPE
Assignment One Suggested Due Date: July 17th In this assignment you will read three articles You will answer questions about Hayek, Lucas, and Mankiw et. al. which consider just those particular articles. Then at the end of the assignment there is a cluster of questions that deal with both Lucas and Mankiw et al where you will have an opportunity to compare and contrast those two articles. When you have completed the assignment, place it in the appropriate drop box in WTClass. Hayek: The Use of Knowledge in Society http://www.econlib.org/library/Essays/hykKnw1.html Adapted from Michael K. Salemi “The Use of Knowledge in Society” F. A. Hayek Discussion Questions 1.1. “The peculiar character of the problem of a rational economic order is determined precisely by the fact that the knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess (H.3)” a. What does Hayek mean by a “rational economic order”? b. What does Hayek mean by “dispersed bits of incomplete and frequently contradictory knowledge”? c. Why is Hayek critical of the common assumptions in economic analysis that buyers, sellers, producers and the economist all know every relevant thing about the economy? d. What, in summary, does Hayek mean by the quoted statement? 1.2. What, according to Hayek, is the information needed to operate effectively in a complex market economy? a. What does Hayek mean by “planning”? b. What is the minimum information needed by economic planners and individuals? c. Does the minimum differ for planners and for individuals? How? Why? d. What happens when some individuals possess more information than other individuals? e. What does Hayek mean when he says (H.16) “…the sort of knowledge with which I have been concerned is knowledge of the kind which by its nature cannot enter into statistics and therefore cannot be conveyed to any central authority in statistical form”? f. Why, according to Hayek, can the “information problem” be solved by “the price system”? 1.3. Why, according to Hayek, is the true function of the price system the communication of information? a. Why does Hayek use the term ‘marvel’ in his discussion of the economy of knowledge? b. What does Hayek mean when he says (H.26) “…man has been able to develop that division of labor on which our civilization is based because he happened to stumble upon a method which made it possible”? Read Robert Lucas’ “Some Macroeconomics for the 21st Century” in the Journal of Economic Perspectives. (Skip the appendix.) All four of these links go to the same article. Some of the links might not be accessible to you, but I think that at least one of them should work for all of you. https://www.aeaweb.org/articles.php?doi=10.1257/jep.14.1.159 http://www.jstor.org/stable/2647059 http://www.econ.psu.edu/~aur10/Econ%20570%20Fall%202009/Lucas%20JEP%202000.pdf http://faculty.georgetown.edu/mh5/class/econ102/readings/Macro_21st_Century.pdf 1. According to Lucas, why has the world’s economy grown so much since 1960? 2. According to Lucas, why do some nations grow faster than others? 3. According to Lucas, why will growth and inequality decrease in the next 100 years? 4. Is Lucas’ model in this paper “economics?” Read Greg Mankiw, Romer and Wiel’s article in The Quarterly Journal of Economics. http://www.econ.nyu.edu/user/debraj/Courses/Readings/MankiwRomerWeil.pdf 1. Many economists think the Solow Growth Model is of limited use. (One of my professors at OU stated that it took economists 50 years to figure out that their growth model has nothing to do with growth.) But does the Solow model give “…the right answer to the questions it is designed to address?” 2. Why is human capital important when testing the Solow model against the data? 3. Explain how the authors conclude that the incomes of the world’s nations are converging? Now that you’ve answered questions about Lucas and Mankiw et al separately, consider this question: Both of these papers develop the notion that the economies of the world’s nations will tend to “converge” over time. Compare and contrast the way(s) in which the papers advance the idea of convergence. Assignment Two Due Date July 24th This assignment is very straight forward. You’ll read two papers and answer questions about each of them. Read Krugman’s paper on unemployment http://www.kc.frb.org/PUBLICAT/ECONREV/EconRevArchive/1994/4Q94KRUG.pdf 1. What is the difference between structural and cyclical unemployment? In this context, what is the difference between Europe and the US? What is the evidence that Krugman uses to back his opinion? 2. What is the natural rate of unemployment? Why is it higher/rising in Europe? Again, what is the evidence? 3. What is the relationship between the rising unemployment in Europe and the rise in inequality in the US. (What does Krugman mean by inequality?) 4. What is NOT to blame for either the rise in unemployment or inequality? 5. What policies, if any, can be put into place to combat rising inequality/unemployment? 6. Are you convinced by Krugman’s argument which rules out globalization as the likely cause for high European unemployment and high US wage inequality? 7. Consider Table 2 in Krugman. Why does Krugman include Table 2 in his paper? In other words, what point is strengthened by the data in Table 2 and why is it crucial to Krugman’s larger thesis? NOW, recreate the data for Table 2 for either the UK or US for the latest year possible. Has anything changed as a result of the Great Recession? Read Thomas Sargent’s paper about the credibility of “Reaganonomics.” http://minneapolisfed.contentdm.oclc.org/cdm/ref/collection/p15334coll1/id/366 http://minneapolisfed.contentdm.oclc.org/cdm/singleitem/collection/p15334coll1/id/366/rec/1 You might like this: http://www.ispot.tv/ad/7Lj9/ally-bank-predictions-featuring-thomas-sargent 1. What is a dynamic game? 2. Why should we think of monetary and fiscal policy as dynamic game? Who are the players and what are the strategies? 3. When are government budgets inflationary? (Again, think in terms of a game.) 4. What are the consequences if the monetary authority does not coordinate with fiscal policy agents? 5. Has Sargent done of good job characterizing the interplay between policymakers in the government, the central bank, and the public? 6. What is the connection between policy coordination and credibility? 7. Why, according to Sargent, were Reagan’s fiscal and monetary policy regimes “incredible?” Explain carefully. Assignment Three Due Date July 31 Read Taylor, Miskin, Obstfeld and Rogoff. Answer the questions for each article, then answer the final cluster that requires you to consider Miskin, Obstfeld and Rogoff. Suggested due date: January 2nd. Read John Taylor’s article about monetary transmission mechanisms. http://web.econ.unito.it/bagliano/ecmon_readings/taylor_jep95.pdf Also, to understand traditional monetary policy, listen to this: http://www.econtalk.org/archives/2008/08/john_taylor_on.html These questions refer to the article, not the podcast. 1. How does monetary policy (or changes in monetary policy) affect output and inflation? In other words, what is the monetary policy transmission mechanism? 2. What is the importance of financial market prices in Taylor’s view? 3. What is the importance of rational expectations and rigidities in the prices of labor and goods? 4. What is a reaction function? Why is a reaction function important? 5. What is an “optimal monetary policy rule?” 6. Has the monetary transmission mechanism changed? How? 7. What are the criticisms of Taylor’s views? How does he respond? What do you think? Read Mishkin’s article about global financial instability. http://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.13.4.3 1. What is a financial crisis? 2. How did adverse selection and moral hazard contribute to the financial crisis in Mexico and East Asia in the 1990s? What are adverse selection and moral hazard? 3. Did irresponsible monetary and fiscal policy contribute to the crisis in the 90s? Why or why not? 4. How is it possible for the IMF to help in a crisis when a domestic central bank might not be able to help. 5. What should the US learn (or have learned??) from the crisis in the 90s? Read Rogoff’s article about global financial instability. http://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.13.4.21 http://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.13.4.21 Answer the questions and place the answers in the appropriate drop box in WTClass. 1. According to Rogoff, is the status quo in international lending viable or not? Explain. 2. Can the IMF handle international financial crises? Why or why not? 3. Rogoff gives six solutions to save the global financial system (deep pockets lender of last resort, an international financial crisis manager, an international bankruptcy court, an international regulator, international deposit insurance corporation, and a world monetary authority.) What is wrong with all of these? 4. Can developing economies cope with speculative capital flows without help? Explain. 5. What will be (should be) the role that equity financing play in developing country projects? Read Obstfeld on Global Capital Markets: http://www.nber.org/papers/w6559.pdf 1. Look at table 1 and figure 1. How does Obstfeld use the data in that table to suggest that 1) markets became less open then more open in the 20th century. 2. What is the “openness trilemma?” What are the economic and/or policy trade-offs with having a global, open and integrated financial system? 3. How does economic integration impact a nation’s ability to tax capital? Can you think of some high profile cases in the news lately that illustrate this fact? (Hint: you should be able to.) 4. What is the international diversification puzzle? What market failures have arisen (if any) have arisen due to more integration and openness? Comparing Obstfeld, Miskin, and Rogoff 1. Would the authors’ advice about policies to reduce the costs of financial integration be the same? Why or why not? 2. Would the authors’ agree that we need an international regulatory body to stave off international financial crises? Why or why not? 3. What is your opinion? Is it good to have a global financial market? Why or why not? Assignment Four Due Date August 7 Straight forward assignment: Read and answer the questions. Read Arnold Kling’s history of the policies that created the great recession http://mercatus.org/publication/not-what-they-had-mind-history-policies-produced-financial-crisis-2008 1. Using only the executive summary, what does Kling think caused the Financial Crisis of 2008? (Use only one sentence.) 2. One page 5, what is “the fact?” and what does this “fact” mean to you? 3. Briefly summarize the four components of the Financial Crisis? 4. On page 10, Kling states, “These property bubbles (in the U.K. and Spain) cannot be blamed on U.S. policy.” How confident are you on that point? Is Kling wrong? 5. Kling’s matrix of causes, gives almost all weight to what two factors? What three factors are almost completely not responsible? 6. Many have blamed designer financial (my term) like CDS and CDO and the shadow banking system for the collapse. How do these fit into Kling’s narrative? 7. Outline the progression of policy that caused/responded to economic conditions in the 30s, 70s and 80s and 00s. 8. What role did the mortgage interest deduction have on housing market? 9. What institution invented and allowed the expansion of mortgage-backed securities? 10. What is regulatory arbitrage? 11. Why did the Basel agreement create an advantage for mortgage securitization? 12. Did the Federal Reserve (and presumably other regulatory agencies know and even encourage regulatory capital arbitrage? What author does Kling cite to establish this? 13. What did the 2002 modification of the Basel Rules do to capital requirements? (See figure 4) 14. Summarize the Shadow Regulatory Committee’s statement 160. 15. Did non market institutions, such as the IMF and Bernanke, think, in 2006, that financial innovation had make the banking sector more or less fragile? 16. What is time inconsistency? (You can look this up elsewhere.) 17. How might “barriers to entry” by related to “safety and soundness?” 18. A Curmudgeon is an old man who is easily annoyed and angered. He also complains a lot. (I had to look it up.) I think I’ll change my xbox gamertag to this word, but I’ll bet it is taken. 19. How did credit scoring and credit default swaps enlarge the mortgage securities market? 20. Why, up until 2007, did we think that monetary expansion was all that was needed to mitigate the impact of financial crises? 21. Suppose that financial markets are inherently unstable. What does this mean are two goals of regulation and regulators? 22. Why are type two errors so problematic? (Two reasons.) 23. How could we make the banking sector easy to fix? Assignment Five Due August 13 Read the linked lectures and answer the questions. Lecture 1 http://econlog.econlib.org/archives/2008/11/lectures_in_mac.html 1.1 Why do you think macroeconomic realities must be reconciled with microeconomic analysis? (This is not a rhetorical question, but it will be hard for you to answer. There is no “wrong” answer you could give. Just think about it for a few minutes.) Lecture 2 http://econlog.econlib.org/archives/2008/11/lectures_in_mac_1.html 2.1 Consider this article after you have read Hayek. How do prices and wages perform the function of “central planning?” 2.2 Kling makes that claim that, because most workers do not do manual labor anymore, the economy is different that it was in 1930. Assuming he is correct, do you think central planning would be harder today or easier? Why? Lecture 3 http://econlog.econlib.org/archives/2008/11/lectures_on_mac.html 3.1 Give a one sentence definition of structural unemployment, of frictional unemployment and of cyclical unemployment. Lecture 4 http://econlog.econlib.org/archives/2008/11/lectures_on_mac_1.html 4.1 So, why does the economy adjust employment rather than wages? Lecture 5 http://econlog.econlib.org/archives/2008/11/lectures_on_mac_2.html 5.1 Kling gives 5 reasons the DotCom recession was worse than the previous two recessions (at least in duration). Which reason do you think is the most compelling? Lecture 6 http://econlog.econlib.org/archives/2008/11/lectures_on_mac_3.html 6.1 Why are Keynesian remedies (blunt fiscal and monetary policy measures) less appropriate in a post industrial economy, according to Kling? Lecture 7 http://econlog.econlib.org/archives/2008/11/lectures_on_mac_4.html 7.1 Why is it so hard to separate finance and government, according to Kling? Lecture 8 http://econlog.econlib.org/archives/2008/11/lectures_on_mac_5.html 8.1 Why is American Express Travelers Checks so interesting? Do credit cards work in a similar way? (I really don’t know the answer to this one. I just know that credit cards have made travelers checks obsolete.) Lecture 9. http://econlog.econlib.org/archives/2008/12/lectures_on_mac_6.html 9.1 According to this article, why do we have banks (financial sector or financial intermediation?) Lecture 10 http://econlog.econlib.org/archives/2008/12/lectures_on_mac_7.html 10.1 Why are banks better than barter, according to this leture? 10.2 Politics tends to favor bailouts of failed firms. Why is this exactly wrong?
Polls are imprecise 2. Political influential are the greatest populace … Read More...
Chapter 04 Homework Due: 11:59pm on Friday, May 23, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Activity: Investigating Survivorship Curves Click here to complete this activity. Then answer the questions. Part A Which of these species typically has a mortality rate that remains fairly constant over an individual’s life span? ANSWER: Correct The mortality rate of robins remains relatively constant throughout their life span. Part B Oyster populations are primarily, if not exclusively, composed of _____. ANSWER: Correct Young oysters have a very high mortality rate; older oysters have a much lower mortality rate. Thus, most oyster populations consist primarily of older individuals. Part C Which of these organisms has a survivorship curve similar to that of oysters? ANSWER: grasses oysters elephants robins humans juveniles adults prereproductive oysters larval and juvenile oysters larvae Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 1 of 13 5/21/2014 7:59 PM Correct Grasses, like oysters, have a relatively high mortality rate early in their life span, after which the mortality rate decreases. Part D Which of these organisms has a survivorship curve similar to that of humans? ANSWER: Correct The mortality rate of elephants, like that of humans, remains relatively low for much of their life span and then dramatically increases for older individuals. BioFlix Quiz: Population Ecology Watch the animation at left before answering the questions below. cats robins elephants grasses humans cats oysters grasses robins elephants Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 2 of 13 5/21/2014 7:59 PM Part A An ideal habitat with unlimited resources is associated with Hint 1. Review the animation or your Study Sheet for Population Ecology ANSWER: Correct Populations grow exponentially with unlimited resources. Part B The maximum population a habitat can support is its Hint 1. Review the animation or your Study Sheet for Population Ecology ANSWER: Correct Part C Logistic growth involves Hint 1. Review the animation or your Study Sheet for Population Ecology ANSWER: Both exponential growth and logistic growth. Population crashes. Exponential growth. Logistic growth. Neither exponential growth nor logistic growth. Logistic growth. Death rate. Birth rate. Carrying capacity. Exponential growth. A population crash. Population growth continuing forever. Population growth reaching carrying capacity and then speeding up. Population size decreasing to zero. Population growth slowing down as the population approaches carrying capacity. Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 3 of 13 5/21/2014 7:59 PM Correct Part D In exponential growth Hint 1. Review the animation or your Study Sheet for Population Ecology ANSWER: Correct Part E Which of the following would NOT cause population size to decrease? Hint 1. Review the animation. ANSWER: Correct An increased birth rate would cause population size to increase. BioFlix Activity: Photosynthesis — Inputs and Outputs Can you fill in the photosynthesis equation? To review photosynthesis, watch this BioFlix animation: Photosynthesis. Part A – Photosynthesis equation Drag the labels onto the equation to identify the inputs and outputs of photosynthesis. ANSWER: Population size grows more and more slowly as the population gets bigger. Population size grows faster and faster as the population gets bigger. Population size stays constant. Population growth slows as the population gets close to its carrying capacity. None of these are correct. Increased death rate A exponentially growing population outgrowing its food supply and crashing Poor weather, resulting in less food being available Increase in the number of predators Increased birth rate Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 4 of 13 5/21/2014 7:59 PM BioFlix Activity: Cellular Respiration and Photosynthesis — Energy Flow Can you identify how energy flows through an ecosystem? To review energy flow in cellular respiration and photosynthesis, watch these BioFlix animations: Cellular Respiration and Photosynthesis. Part A – Energy flow through an ecosystem Drag the labels onto the diagram to identify how energy flows through an ecosystem. ANSWER: BioFlix Activity: Cellular Respiration and Photosynthesis — Chemical Cycling Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 5 of 13 5/21/2014 7:59 PM Can you identify how chemicals cycle in an ecosystem? To review the chemical inputs and outputs of cellular respiration and photosynthesis, watch these BioFlix animations: Cellular Respiration and Photosynthesis. Part A – Chemical cycling in an ecosystem Drag the labels onto the diagram to identify how chemicals cycle in an ecosystem. ANSWER: BioFlix Activity: Cellular Respiration — Inputs and Outputs Can you fill in the cellular respiration equation? To review cellular respiration, watch this BioFlix animation: Cellular Respiration. Part A – Cellular respiration equation Drag the labels onto the equation to identify the inputs and outputs of cellular respiration. ANSWER: Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 6 of 13 5/21/2014 7:59 PM BioFlix Activity: Population Ecology — Types of Population Growth Can you identify the different ways in which populations grow? To review types of population growth, watch this BioFlix animation: Population Ecology. Part A – Types of population growth Drag the correct label under each graph to identify the type of population growth shown. ANSWER: Concept Review: Calculating Doubling Time Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 7 of 13 5/21/2014 7:59 PM Can you calculate doubling times and growth rates for exponentially growing populations? Remember that the doubling time (in years) for an exponentially growing population is estimated by dividing 70 by the growth rate of the population (as a percentage): Doubling time (in years) = 70 / annual growth rate (%) Part A Drag the values on the left to the appropriate blanks on the right to complete the sentences. Not all values will be used. ANSWER: Concept Review: Calculating Population Growth Rates Populations grow larger from births and immigration and grow smaller from deaths and emigration. The growth rate for a population is determined by adding the birth rate and the immigration rate, and then subtracting the death rate and the emigration rate (all rates expressed as the number per 1,000 individuals per year): (birth rate + immigration rate) (death rate + emigration rate) = growth rate Positive population growth rates lead to population increases, and negative population growth rates lead to population declines. Part A Suppose you are studying a population with the following characteristics: Birth rate = 14 per 1,000/year Death rate = 6 per 1,000/year Immigration rate = 5 per 1,000/year Emigration rate = 1 per 1,000/year What is the growth rate for this population? ANSWER: Part B Suppose you are studying a population with the following characteristics: 4 per 1,000/year 12 per 1,000/year 14 per 1,000/year 26 per 1,000/year Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 8 of 13 5/21/2014 7:59 PM Birth rate = 11 per 1,000/year Death rate = 10 per 1,000/year Immigration rate = 4 per 1,000/year Emigration rate = 3 per 1,000/year What is the growth rate for this population? ANSWER: Part C Suppose you are studying a population with the following characteristics: Birth rate = 10 per 1,000/year Death rate = 12 per 1,000/year Immigration rate = 2 per 1,000/year Emigration rate = 3 per 1,000/year What is the growth rate for this population? ANSWER: Part D This question will be shown after you complete previous question(s). Part E This question will be shown after you complete previous question(s). Part F This question will be shown after you complete previous question(s). Concept Review: Levels of Ecological Organization Can you identify the example that corresponds to each level of ecological organization? Part A Drag the labels to the appropriate targets in the table. ANSWER: 0 per 1,000/year 2 per 1,000/year 14 per 1,000/year 28 per 1,000/year 3 per 1,000/year 1 per 1,000/year 17 per 1,000/year 27 per 1,000/year Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 9 of 13 5/21/2014 7:59 PM BioFlix Activity: Mechanisms of Evolution — Natural Selection: Pesticides Can you identify the process by which natural selection acts on an insect population exposed to pesticides? To review the process of natural selection, watch this BioFlix animation: Mechanisms of Evolution: Natural Selection. Part A – Natural selection: Pesticides Drag the labels onto the flowchart to place them in the correct sequence. ANSWER: Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 10 of 13 5/21/2014 7:59 PM ABC News Video: Protecting the Galapagos Islands Watch the ABC News video (2:07 minutes). Then answer the questions below. Part A Where are the Galapagos Islands located? ANSWER: Part B Which of the following sets of animals are likely to be found on the Galapagos Islands? ANSWER: near the tip of South Africa northeast of Australia along the Great Barrier Reef 600 miles west of Ecuador, near the equator in the Mediterranean Sea, as part of the Greek Islands frogs, lungfish, mountain goats tortoises, finches, blue-footed boobies ostriches, cougars, porcupines beaver, snakes, armadillos Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 11 of 13 5/21/2014 7:59 PM Part C Which species is threatening the natural wildlife on the Galapagos Islands? ANSWER: Part D The Galapagos Islands were the first place on Earth to _____. ANSWER: Part E Tourism on the Galapagos Islands is being restricted by requiring tourists to _____. ANSWER: Current Events: A Surplus Washington Could Do Without: A Capital Park’s Rapacious Deer (New York Times, 2/28/2012) Read this New York Times article and then answer the questions. A Surplus Washington Could Do Without: A Capital Park’s Rapacious Deer (2/28/2012) Registration with The New York Times provides instant access to breaking news on NYTimes.com. To register, go to http://www.nytimes.com/register. Visit http://www.nytimes.com/content/help/rights/terms/terms-of-service.html to review the current NYT Terms of Service. Part A Which of the following is true? ANSWER: Part B What predator currently feeds on deer in Rock Creek Park? humans zebra mussels Asian carp mountain lions suffer the complete extinction of all native species be declared off-limits to all humans be declared a world heritage site be invaded by human-introduced species visit each island in groups of only ten individuals at a time view the islands only from the water be escorted by trained guides at all times stay at least 100 feet away from all animals on the islands Deer have always been a problem in Rock Creek Park. Deer are not a problem in Rock Creek Park. Deer are not native to Rock Creek Park, and have been a problem since they were introduced in 1952. Deer were once absent from Rock Creek Park, and have only become a problem in the last 20 years. Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 12 of 13 5/21/2014 7:59 PM ANSWER: Part C Why isn’t the deer population controlled by hunting in Rock Creek Park? ANSWER: Part D It is hoped that the deer herd can be reduced by how much? ANSWER: Part E Which of the following is true? ANSWER: Part F Because the park is changing in response to the increasing deer population, this is an example of ______________. ANSWER: Score Summary: Your score on this assignment is 21.2%. You received 9.1 out of a possible total of 43 points. There are no predators of deer in Rock Creek Park. mountain lion coyote wolf Hunting has been attempted in the park, but the trees are too thick. Hunting is prohibited in the park. There is no public interest in hunting in the park. Deer are a protected species. one-quarter one-half three-quarters the entire herd Animals cannot be killed on federally managed public lands. Only Congress can decide to have animals killed on federally managed public lands. The federal agency in charge of management of the land in question decides if animals should be killed. Only the National Park Service can decide to have animals killed on federally managed public lands. succession artificial selection recession progression Chapter 04 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 13 of 13 5/21/2014 7:59 PM
Question 10 (1 point) In contrast to Freud’s theory, object relations theorists Question 10 options: focus on internal drives and conflicts. are interested in the intellectual and emotional development of the infant. are interested in an infant’s relationship with his or her parents. do not believe that children develop unconscious representations of significant objects in their environment. ________________________________________ Question 11 (1 point) The psychologists who developed the frustration aggression hypothesis used or adapted each of the following concepts from Freudian theory except one. Which one? Question 11 options: displacement sublimation catharsis reinforcement Question 12 (1 point) Although he changed his mind during his career, which of the following did Freud eventually decide was the cause of human aggression? Question 12 options: a death instinct frustration projection unresolved Oedipal conflicts Question 13 (1 point) Freud wrote about all of the following types of anxiety except one. Which one? Question 13 options: reality anxiety neurotic anxiety moral anxiety performance anxiety Question 14 (1 point) Which of the following is true about neurotic anxiety, as conceived by Freud? Question 14 options: It is experienced when id impulses are close to breaking into consciousness. It prevents the ego from utilizing defense mechanisms. It is created when id impulses violate society’s moral code. People experiencing neurotic anxiety usually are aware of what is making them anxious. Question 15 (1 point) One explanation for why aggression leads to more aggression is that it is reinforced by the cathartic release of tension. Question 15 options: True False ________________________________________ ________________________________________ Question 1 (1 point) A man is said to have one personality trait that dominates his personality. Allport would identify this personality trait as a Question 1 options: 1) common trait. 2) central trait. 3) cardinal trait. 4) secondary trait. Question 2 (1 point) Which of the following is true about the trait approach to personality? Question 2 options: 1) Trait researchers generally are not interested in understanding and predicting the behavior of a single individual. 2) It is not easy to make comparisons across people with the trait approach. 3) The trait approach has been responsible for generating a number of useful approaches to psychotherapy. 4) Trait theorists place a greater emphasis on discovering the mechanisms underlying behavior than do theorists from other approaches to personality. Question 3 (1 point) Many researchers fail to produce strong links between personality traits and behavior. Epstein has argued that the reason for this failure is because Question 3 options: 1) researchers don’t perform the correct statistical analysis. 2) researchers don’t measure personality traits correctly. 3) researchers don’t measure behavior correctly. 4) none of the above Question 4 (1 point) Which theorist had a strong influence on Henry Murray’s theorizing about personality? Question 4 options: 1) Gordon Allport 2) Alfred Adler 3) Sigmund Freud 4) Carl Jung Question 5 (1 point) Sometimes test makers include the same test questions more than once on the test. This is done to detect which potential problem? Question 5 options: 1) faking good 2) faking bad 3) carelessness and sabotage 4) social desirability