Discussion Reply

Answer two of the following questions, and respond to at least one other student’s post afterward for a total of at least 400 words.

1. According to Sternheimer, what is the larger issue behind focusing on or blaming media for various social problems? What does the author believe are the more important underlying issues? Why might politicians, the public, and the media itself be reluctant to discuss these issues, in your opinion?

2. Why does Sternheimer believe that social context is so important in understanding fears about media and popular culture? What are “moral panics,” and what examples of moral panics does she provide in 20th century music? Do you see examples of similar, current moral panics in American culture?

3. What is “agenda-setting theory,” and how does the media itself ironically stoke public fears about media influence on children? How might a constructionist approach to social problems provide us with a more nuanced understanding of the supposed “harm” of popular culture?

Please give a response to this post:

Q1

According to chapter one, Sternheimer explains blaming media that televisions and video games are the cause of social problems can distract our attention from essential issues and causations. The largely contemporary issues she analyzes including education, violence, early pregnancies, poverty, and family instability. The most serious challenge American children face is poverty. The families don’t get enough benefit from their works. And, schools in poverty area are not safe and qualified. Kids are in danger. However, people ignore the real causation but attribute the issue to popular culture which is derived from media. In my opinion, politicians and the public don’t have the ability to solve these issues. Instead of looking at the cause of social problems, they are content to simply blame popular culture and media. So, the media will reluctant to discuss these issues to avoid unnecessary trouble.

 
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Assume That You Are A Consultant Hired By This Organization To Study It And Provide Recommendations About Your Findings. Evaluate The Organization You Have Chosen To Study Throughout This Course.

APA FORMAT

 

 

Assume that you are a consultant hired by this organization to study it and provide recommendations about your findings. Evaluate the organization you have chosen to study throughout this course.

Submit the Key Assignment draft for grading and instructor feedback. The Key Assignment draft assignment should cover the concepts introduced in Weeks 1 through 4.

Assume that you are a consultant hired by this organization to study it and provide recommendations about your findings. The final paper will include specific actions to be taken by the managers, supervisors, and leaders as they address challenges in the organization.

In your Key Assignment draft, include the following:

  • Provide 250–350 words briefly summarizing general information about the organization (industry, size, public vs. private, etc.).
  • Describe at least 1 significant issue or challenge that this organization is currently facing as it relates to the topics covered each week.
  • Identify how you would take action to correct these issues. Be sure to include the following in your answer:
    • Description of current management challenges and the current functions, roles, and skills
    • Descriptions of supervisory challenges (which may include, but are not limited to, motivation and performance evaluation)
    • Leadership styles currently in use at the organization you are studying and the leadership theories that will be used in the solution
    • Communication challenges and the solution to these challenges (interpersonal, group, team, and organizational)
    • A minimum of 5 peer-reviewed scholarly references

Also, be sure to include an analysis of your organization’s challenges with and efforts to:

  • Address stress and the work–life balance
  • Improve problem solving and decision making throughout the organization
  • Deal with change and resistance to change
 
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Environment61

final Environmental Issues Project is due. Make sure that you have followed the requirements and made any corrections that were needed. Your final paper should address the following key points:

  • The Controversy: Identify the controversy
  • The Major Players: Who is involved? Why are they involved?
  • Important Facts: State relevant facts concerning the issue. Try to separate fact from opinion. Try not to show your own bias. Properly use APA citations
  • Side One: Arguments; state briefly and cite your sources
  • Side Two: Arguments; state briefly and cite your sources
  • Your Opinion and Rationale: I believe that… We should… I feel that… Use supporting arguments and rationale. What arguments would you use to present to those who disagree with you? Cite all of your sources.
  • References: Alphabetize your sources. Make sure there are sources representing both sides of the issue.

You must use a minimum of six sources. The final paper should be a 6- to 8-page Word document with citations in APA format.

 
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This Final Exam

This final exam is comprised of eight worksheets covering various key topics of the Harvard fully online eLearning course on Quantitative Methods.

Complete the exam as if you were submitting this workbook to a lay person not familiar with quantitative methods such that they could easily understand your arguments, graphs, mathematical evidence and conclusions.

Please show all of your work.  It is not enough to simply get right answers on this Exam or to just explain the mathematical process in a text box; you must show your work to demonstrate that YOU know how to arrive at correct answers using Excel calculations, functions, and/or appropriate utility.  If a utility is used, the specific utility must be pasted to the respective worksheet.

 

There is a deadline for the submission of this exam.  You are responsible for submitting this completed workbook to your coach before the deadline.  Use  Lastname.Firstname.FinalExam as the file name of your document.

Q-1a.  You run a call center and are concerned about customer support service levels on the Help Desk.  You want to know how many calls per day are handled by your help desk staff.  You collect the data at left over a 75-day period.  Use appropriate descriptive statistics to make sense of this data.  Use an appropriate graph also.  Explain  your findings so that your non-quantitative partner will understand them.  (5 pts.)

Can demographic information be  helpful in predicting sales at sporting goods stores?  The data at left are monthly sales totals from a random sample of 33 stores in a large chain of nationwide sporting goods stores.  All stores in the franchise, and thus within the sample, are approximately the same size and carry the same merchandise.  The county, or in some cases counties, in which the store draws the majority of its customers is referred to here as the customer base.  For each of the 33 set are:

Sales ——Latest one month sales total (dollars)

 

Income —Median family income of customer base (dollars)

Age ——–Median age of customer base (years)

HS ———-Percentage of customer base with a high school diploma

College —Percentage of customer base with a college diploma

Growth —Annual population growth rate of customer base over the past 10 years.

_______________________________________________________________________________________

Q-2a. Construct a scatter plot, using sales as the dependent variable and median family income as the independent variable.  Discuss the scatter plot. (5 pts.)

 

______________________________________________________________________________________

 

Q-2b.  Assuming a linear relationship, use the least-squares method to compute the regression coefficients b0and b1 and state the regression equation. (5 pts.)

 

______________________________________________________________________________________

 

Q-2c.  Interpret the meaning of the Y-intercept, b0, and the slope, b1, in this problem. (5 pts.)

 

______________________________________________________________________________________

 

Q-2d.  Compute the coefficient of determination r2, and interpret its meaning.  (5 pts.)

 

______________________________________________________________________________________

 

Q-2e.  Construct a 95% confidence interval estimate of the population slope and interpret its meaning. ( 5 pts.)

 

 

Q-3a.   A sample of students from an introductory psychology class were polled regarding the number of hours they spent studying for the last exam.   All students anonymously submitted the number of hours on a 3 by 5 card. There were 24 individuals in the one section of the course polled. The data was used to make inferences regarding the other students taking the course.  Construct a 95% confidence interval  estimate .  Explain your findings so that your non-quantitave partner will understand them.   Their data is  below: (5 pts.)

 

 

 

20         18           7.5         11           10           3.5             7.5           18            19           2.5          9             14

 

9         14          14.5        17           22           4.5           10.5           15              5           8.5          8             20

 

_____________________________________________________________________________________________________________

 

Q-3b.  A sample of Alzheimer’s patients are tested to assess the amount of time (in minutes)  in stage IV sleep. It has been hypothesized that individuals sufferering from Alzheimer’s Disease may spend less time per night in the deeper stages of sleep.  The number of minutes spent is Stage IV sleep is recorded for thirty patients (refer to sample data below of stage IV sleep over a 24 hour period).  Compute a 95 percent confidence interval for this data. What does this information tell you about a particular individual’s (an Alzheimer’s patient) stage IV sleep?   Explain your findings so that your non-quantitative partner will understand them.  (5 pts.)

 

Stage IV Sleep in Minutes

 

28.5     37.4     18.5     53.2     61.3     18.75     33.9     27.1     73.0     53.4     66.0     20.5     51.7     57.25     35.6

 

 

 

33.4     25.1     65.3     55.0     35.0     19.25     81.5     44.1     28.7     36.5     32.2     47.3     41.7     39.75     18.3

 

_____________________________________________________________________________________________________________

 

Q-3c.  A large retail corportation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase.  Previous analysis suggest that the standard deviation of the purchase amount is approximately  $50.72.  In order to calculate a 95% confidence interval of the total width less than $6.50, how many sales receipts should the corportion include in the sample?  Explain your findings so that your non-quantitative partner will understand them.  (5 pts.)

 

_____________________________________________________________________________________________________________

 

Q-3d.  A survey of 850 workers were asked how much they used the Internet at work.  578 said they used the internet within limits, and 255 said that they did not use the Internet within limits.  Construct a 95% confidence interval estimate for the proportion of all workers who did not use the Internet within limits.  Explain your findings so that your non-quantitative partner will understand them.  (5 pts.)

 

_____________________________________________________________________________________________________________

 

Q-3e.  You are the designer for your company’s web site.  You have data to indicate that the mean download time for the homepage is 5.8 seconds and that the standard deviation of download time is 2.1 seconds.  If we assume that the download times are normally distributed, what percent of users will wait between 4 and 8 seconds for the homepage to download?  Explain your findings so that your non-quantitative partner will understand them.  (5 pts.)

 

 

Q-4a.  You are the manager of a popular retail store.  You want to determine whether the population mean  wait time for customer to

 

check-out has changed in the past month from its previous population mean value of 4.25 minutes.  From past experience, you

 

can assume that the population is normally distributed with a population standard deviation of 1.6 minutes.  You select a sample

 

of 43 customer’s wait time to check-out during a one hour period.  The sample mean is 4.75 minutes.  Determine whether there

 

is evidence at the 0.05 level of significance that the population mean wait time to check-out has changed in the past month from

 

its previous population mean value of 4.25 minutes.   Explain your findings utlizing information from the hypothesis test you

 

conduct.  (5 pts.)

 

_______________________________________________________________________________________________________________________

 

Q-4b.  You are the manager of a fast-food restaurant.  Based on a sample of two-hundred fifty drive-through orders, you discovered that

 

orders were filled correctly 86.5% of the time.  In an effort to improve the amount of orders filled correctly, you developed a new

 

process to fill orders.  After sampling two-hundred fifty orders under this new process, the results reviled that 225 orders were

 

filled correctly.  At the 0.01 level of significance, can you conclude that the new process population proportion of orders filled

 

correctly is higher than the proportion of orders filled under the old process?   Explain your findings utilizing information from the

 

test you conduct. (5 pts.)

 

Q-5a.  One of the important features of a camera is the battery life

 

as measured by the number of shots taken until the battery

 

needs to be recharged.  The data at left contain the battery

 

life of 27 subcompact cameras and 15 compact cameras.

 

Assuming that the population variances from both types of

 

digital cameras are equal, is there evidence of a difference

 

in the mean battery life between the two types of digital

 

cameras at the 95% confidence level?  (5 pts.)

 

A real estate Association in a suburban community would like to study the relationship between the size of a single-family house (as measured by number of rooms) and the selling price of the house (in thousands of dollars).  Two different neighborhoods are included in the study, one on the east side of the community (=0) and the other on the west side (=1).  A random sample of 20 houses was selected with the results given at left.

 

_____________________________________________________________

 

Q-6a.  State the multiple regression equation that predicts the selling price

 

based on the number of rooms in the neighborhood. (5 pts.)

 

_____________________________________________________________

 

Q-6b.  Interpret the regression coefficients.  (5 pts.)

 

_____________________________________________________________

 

Q-6c.  Predict the selling price for a house with 10 rooms that is located in a

 

East-side neighborhood.  Explain your findings so that your non-

 

quantitative partner will understand them.  (5 pts.)

 

_____________________________________________________________

 

Q-6d.  Compute and interpret the adjusted r2.  (5 pts.)

 

Q-7a.  The management of a bank in the Caribbean was concerned about the potential loss that

 

might occur in the event of a hurricane.  The bank estimated that the loss from one of these

 

storms could be as much as $120 million including losses due to interrupted service and customer

 

relations.  One project the bank is considering is the installation of an emergency power generator

 

at its operations headquarters.  The cost of the emergency generator is $550,000, and if it is

 

installed no losses from this type of storm will be incurred.  However, if the generator is not

 

installed, there is a 10% chance that a power outage will occur during the next year.  If there is an

 

outage there is a 5% probability that the resulting losses will be very large or approximately $135

 

million in lost earnings.  Alternatively it is estimated that there is a 95% probability of only slight

 

losses of around $1.1 million.   Using decision tree analysis, determined whether the bank should

 

install  the new power generator.  (5 pts.)

 

An investor is to purchase one of three types of real estate.  The investor must decide among an apartment building, an office building, and a warehouse.  The future states of nature that will determine how much profit the investor will make are good economic conditions and poor economic conditions.  The profits that will result from each decision in the event of each state of nature are shown above.

 

_________________________________________________________________

 

Q-8a. Which investment has the highest EMV andwhat is the expected value of

 

perfect information in this problem ?  Explain your findings so that your non-

 

quantitative partner will understand them.  (5 pts.)

 
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For Creative Instructor

Arreola 1

 

The Trouble with Wilderness: Or, Getting Back to the Wrong Nature

The purpose of the journal article titled The Trouble with Wilderness: Or, Getting Back to the Wrong Nature by William Cronon is to explore if the possibility of the preservation of the world is through wilderness. According to the author, William Cronon, wilderness is not what we may assume it to be and as a result wilderness is a human creation that does not stand apart from civilization. In other words, wilderness is influenced by the cultures and histories of humans that has in one form or the other been contaminated by some type of human development. Wilderness is also made of all the memories that a person gets while walking through a natural path in a natural environment, which are also influenced by a cultural creation. In the late eighteen century the word wilderness meant to be a savage, deserted, and waste (Cronon 8). The word wilderness has also been mentioned in the bible to referrer to the place where Moses wondered for forty years with his people. Wilderness in the early years also referred to a place where a person went against their own will with fear. It was also a landscape where supernatural activities occurred. For instance, God seemed to appear in the most sublime places where a person was reminded of their mortality (Cronon 10). These sublime places are now located in The Grand Canyon, Yellowstone Park, and Zion because of the emotions that these places induced.

William Wordsworth, an early romantic writer and artist, described his sublime experiences in his poem The Prelude, which is based on the terror he felt while he crossed the Simplon Pass and climbed the Alps. Other writers, liked John Muir, captured the domesticated part of the sublime wilderness, which is extremely different than the writings of Wordsworth and Thoreaus. In Muir’s writings on the North Dome in Yosemite Valley, he describes the place as being a religiously connected without pain or fear. Although there are some differences in the way these writers chose to express their perception of wilderness, they all have one thing in common and that is that they are participating in the same cultural tradition of mankind’s myths. Mankind’s myths have caused Americans to protect their wilderness and national parks for the preservation of the nation’s important sacred myth (Cronon 14). The protection of these landscapes was influenced from the vanishing frontier lands that sparked Americans’ fears of losing their history. The vanishing frontiers caused American leaders, like President Roosevelt, to protect the wilderness landscapes from becoming wiped out. The vanishing frontiers in America also created strong nostalgic emotions that lead to the creation of frontier gender myths. In the frontier wilderness, for instance, men were able to be real men without civilization threatening their masculinity. This impacted people to remember the frontier as the greatest place in the history of America.

The years that followed the wiping out of the frontier, the rich community saw the wilderness as recreation places and places to travel to. The developments of these touristic places for the elites lead the Native America Indian population to be forced to move to other locations. In the eyes of Native American Indians, the myth of the wilderness being a virgin uninhabited land is seen with cruel eyes because their land was taken away for touristic purposes. This lead to the concept that the American wilderness is truly a myth because it has all been invented. There is no uninhabited wilderness in America that was not previously inhibited by Indians. In order for the wilderness myth to be perpetuated Indians were removed from their homes, which had also been the homes of their ancestors. This is a reminder of how invented the American wilderness concept really is because the actual history of the wilderness is denied.

Wilderness is meant to be a place of freedom in which a person can find their true self and also a place to come back to after living an artificial life. In other words, wilderness is the ultimate place for authenticity where a people can come and learn more about themselves. The problem with wilderness is that it can also be used as a place where a person comes to escape responsibilities and not take accountability for the past. In the long run, I found this journal article to be genuine and well thought out compared to the ideas of other writers. The author, William Cronon, did an excellent job in explaining the historical myth events that have led humanity to become separate from the wild environment. For instance, Thoreaus has approached wilderness as a spiritual place where human beings can come and heal. Cronon on the other hand, remained emotionally indifferent towards the spiritual and emotional opinions of wilderness. He instead wanted humankind to take responsibility for the separation that exists between cultures and wilderness.

Sources:

Cronon, William. “The Trouble with Wilderness: Or, Getting Back to the Wrong Nature.” Enviromental History Vol 1 (1996): 7-28. Print.

 
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Lab Report

Name:

 

Date:

 

Instructor’s Name:

 

Assignment: SCIE211 Phase 5 Lab Report

 

Title: Identifying Environmental Hazards

 

Instructions: You will write a 1-page lab report using the scientific method to answer the following questions:

 

·         Why do you see increases and decreases in the invasive species population?

·         What are the implications associated with these alterations to the ecosystem as a whole?

 

When your lab report is complete, post it in Submitted Assignment files.

 

Part I: Using the lab animation, fill in the data table below to help you generate your hypothesis, outcomes, and analysis.

 

Years Zebra and Quagga Mussel (density/m2) Phytoplankton (µg/ml) Zooplankton (µg/ml) Cladophora Biomass (g/m2) Foraging Fish (kilotons) Lake Trout (kilotons)
0 100 3 2 10 150 15
4 1,000 2.5 1 100 100 10
7 2,500 2 0.5 200 80 8
10 7,500 1.5 0.25 600 50 5
13 15,000 1 0.1 700 25 25
16 7,500 1.5 0.2 243 40 4
20 5,000 1.75 0.4 136 60 6

 

Part II: Write a 1-page lab report using the following scientific method sections:

  • Purpose
    • State the purpose of the lab.
  • Introduction
    • This is an investigation of what is currently known about the question being asked. Use background information from credible references to write a short summary about concepts in the lab. List and cite references in APA style.
  • Hypothesis/Predicted Outcome
    • hypothesis is an educated guess. Based on what you have learned and written about in the Introduction, state what you expect to be the results of the lab procedures.
  • Methods
    • Summarize the procedures that you used in the lab. The Methods section should also state clearly how data (numbers) were collected during the lab; this will be reported in the Results/Outcome section.
  • Results/Outcome
    • Provide here any results or data that were generated while doing the lab procedure.
  • Discussion/Analysis
    • In this section, state clearly whether you obtained the expected results, and if the outcome was as expected.
    • Note: You can use the lab data to help you discuss the results and what you learned.

Provide references in APA format. This includes a reference list and in-text citations for references used in the Introduction section.

Give your paper a title and number, and identify each section as specified above. Although the hypothesis will be a 1-sentence answer, the other sections will need to be paragraphs to adequately explain your experiment.

 

When your lab report is complete, post it in Submitted Assignment files.

 
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Industrial Hygiene Unit VIII

Question 1

You are an industrial hygienist conducting personal sampling on a worker who is overseeing a production process involving use of acetone (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 1000 parts per million (ppm) of acetone). You are able to measure the following exposures:

700 ppm for 3 hours

1300 ppm for 2 hours

900 ppm for 3 hours

What is the calculated TWA? What would you tell plant management in terms of exposure to acetone and compliance with the PEL?

 

  • there is a 200 word minimum response required.
  • Credible reference materials, including your course textbook(s), may be used to complete the assessment.

Question 2

 

Please solve the following problem, indicating your response on a Word document and submitting the document via File Upload.

Using the following formula, solve the problem below, and show your work.

TWA = CaTa + CbTb + … + CnTn

��������������������������������8

 

TWA      =             Time-Weighted Average

Ca           =             Concentration of contaminant during the sampling period “a”

Ta           =             Time of sampling period “a”

Cb           =             Concentration of contaminant during the sampling period “b”

Tb           =             Time of sampling period “b”

Cn           =             Concentration of contaminant during the sampling period “n”, where “n” is the last of a series of contaminants

Tn           =             Time of sampling period “n”

 

 

Note: All concentrations are in parts contaminant per million parts of air or milligrams of contaminant per cubic meter of air.

Air Sampling Problem: You are an industrial hygienist that is conducting personal sampling on a worker who is overseeing a production process involving use of toluene (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 200 parts per million (ppm)). You are able to measure the following exposures:

500 ppm for 1 hour

100 ppm for 4 hours

225 ppm for 3 hours

 

What is the calculated TWA? What would you tell plant management in terms of exposure to toluene and compliance with the PEL?

  • there is a 200 word minimum response required.
  • Credible reference materials, including your course textbook(s), may be used to complete the assessment.
 
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Assignment 2 Lending Institutions, Health Care, And Human Capital Paper Explore Whether Or Not Funding From International Lending Institutions Like The World Bank And The IMF

Assignment 2 Lending Institutions, Health Care, and Human Capital paper Explore whether or not funding from international lending institutions like the World Bank and the IMF

Assignment 2: Lending Institutions, Health Care, and Human Capital

Due Week 9 and worth 200 points

Use the Internet to research one (1) developing nation of your choice. Your research should include an examination of lending institutions, health care, and human capital, as well as the material covered by the Webtext and lectures in Weeks 6 through 9.

Write a three to four (3-4) page research paper in which you:

  1. Explore whether or not funding from international lending institutions like the World Bank and the IMF are helping or hindering the social, economic, or political development of the country that you have selected. Support your response with examples.
  2. Discuss, with examples, at least four (4) substantive ways in which a healthy population strengthens the economy of the country that you have selected.
  3. Ascertain the degree to which the leadership of your chosen country has used foreign aid to improve its health care system. Support your response with concrete examples.
  4. Use at least five (5) quality academic resources in this assignment. Note: Wikipedia, blogs, and other nonacademic websites do not qualify as academic resources. Approval of resources is at the instructor’s discretion. Resources must also be within the last seven (7) years.
 
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REPLY(SCIENCE)

REPLY TO EACH POST 50 WORDS MIN

1.  I decided to do my PowerPoint presentation on pesticides killing off honeybee populations and what various forms of mitigation exist, as well as what negative impacts this has in other areas of agriculture.

One thing I found very interesting and surprising in “duh” sort of way, was how many other insects contribute to the pollination of so many different flowering plants around the planet [1]. For example, not all pollinators fly. Ants can conduct pollen exchange by simply walking from flower to flower.

This also correlated to some of the other plants that can be affected negatively by either the current pesticides being used or what substitute is introduced.

2.  I wrote about oil and gas in Alaska as it is one of our biggest sources of state income and is also a large contributor to the environment. Until Deep Water Horizon, the Exxon Valdez spill was the largest oil spill in history. It was so impactful to the pristine waters and shoreline of this state and affected animals, people, the environment and there are still aspects of the environment that are still recovering.

One thing I found interesting while doing my research was that the price of oil in Alaska is consistently higher than places in the lower 48. Gas at the pumps is almost always at least $0.70 more than anywhere in the lower 48. Part of this is because there are different types of crude that get developed into different types of oil/gas. So Alaska doesn’t produce enough to sustain the entire state, so we have to coordinate with other refineries and that can drive the price of gas at the pump up. There are tons of other factors and there is so much to determining the cost per barrel, and etc. so it was very eye opening to get a glimpse into the complex world of oil.

3.  I did my presentation on the litter in WV and how we should address the problem.

I won’t be presenting y power point presentation.  I will leave you with the thoughts and knowledge that I have gained through the course contents as well as the  professor and all of you.  The idea of sustainability now more than ever should be our goal as a society.  These times we are living are truly unpredictable and this can effect our resources as well.  More than ever we should be looking to wind and solar, renewable sources of energy that in times like these can be accessed by individuals.  If anything this should prove even more how important it is to relieve ourselves from certain forms of energy.

I will now mere than ever begin to committ to a more earth friendly self sufficient life style.  The gardening the hunting and the search for a company to install solar panels.  We have decided to go all in with solar and look forward in seeing the benefits in the near future.

We are also committed to reducing our footprint by cutting our driving time and reducing our use of plastics.  Res usable sacks are going to be are main device when coming and going from the store.

Most of all I enjoyed learning that there are people like me out there.  Concerned and hopeful for the future.  We can turn the tide if we all just do a little something.  Maybe our actions will become a contagion and others will also join in.

4.  I am not sure if my week 7 power point presentation was exactly what was required. I did mine about how the Military’s lack of cleaning up their test sites in Alaska  has caused caused contaminated soil and water. Harming water quality, salmon habitats, and beluga whales populations. The left over bombs contaminated the ground with white phosphorus, lead, cobalt, chromium, beryllium, dinitrotolulene, RDX, and lindane killing wildlife and harming humans alike. What I learned from my research is that SUPERFUNDS doesn’t have the money or resources to needed to clean up all the sites contaminated, however they do find the previous owners of the sites and force them to pay for the clean up. So why isn’t the Military paying for the clean up of the sites they contaminated?

5.  I did my power point presentation on the air quality in Fairbanks Alaska. I know we went over air pollution so it seems like I chose an easy topic but it goes way more in depth than what we talked about. Considering that the air quality is one of the worse in the world I figured it was a big enough deal to warrant going over again. The biggest controversy on it, that most people don’t really see or consider, is that most of the pollution is caused by wood burning and that is what people use to heat their houses. So the solution seems pretty easy and right there it ends up coming down to letting people stay warm or  fixing the air quality. Since other heating sources are too expensive for a lot of people. Regulators are about to come in and just do whatever it takes to fix it despite that fact, since to them the state can’t get it under control themselves and to them the most important thing is getting the air within the set regualtions. It gets a lot more interesting the more research you do on it.

6.  While conducting my research on Eielson’s power plant, I came across some interesting articles that discussed more of why burning coal is so damaging to the environment.  I understood before that coal came from biomass that had been buried for eons, keeping the carbon they were made from contained in the earth.  This carbon gets released back into the air when it’s burned for energy.  What I did not understand, until this course what how long we are damaging that cycle.

I grew up playing and working in the woods and could see the cycle of trees growing, dying, decaying and creating new growth.  This cycle moves at a pretty rapid pace compared to the creation of coal from plants dying and being buried before they can decay and release their carbon back into the cycle.

I have seen drastic shifts in that cycle due to forest fires which makes the fact that we burn coal so much worse.  Forests can grow again, capturing some of that released carbon; however, it’s hard to imagine the amount of forest that would have to grow, die and be buried in the earth for us to recapture the carbon that has been released from our burning of coal.  I hope that renewable energy sources continue to improve and we can stop using coal for energy production.  If we stop, we can at least give nature a chance to recapture some of the damage we have caused and return more carbon back into the ground.

7.  Is it just me or did these eight weeks fly by? To be honest I was very skeptical about taking this class since I personally never enjoyed Science and was never good at it but I am glad I took this class. This class was enjoyable and we learned something new every week in regards to our environment and how we are slowly destroying it and the things we can do to improve it. For my week seven assignment I decided to discuss the air pollution in Los Angeles, California in which is always in the top 10 for worst air quality cities in the United States.

During my research, I came across astonishing numbers that were a result of the poor air quality. Some of these numbers included over 3,000 premature deaths for those over the age of 30, over 140,000 asthma attacks, over 400,000 days of lost work and many other issues (Jacquot, 2018). This is a major issue that I was not aware of and I am glad I took this class to bring it to my attention as well as others that were not aware of. I will attach my PowerPoint presentation and feel free to critique it so I know what I need to do to improve my PowerPoint/research skills. It was a pleasure taking this class with all of you and I wish you the best of luck in your future.

Reference:

 
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Environmental Hazards & Human Health

Background

Food! We have discussed food from a variety of angles in the course. We all eat food for energy, nutritional benefits and, for some of us, because it can be delicious which confers a pyscho-social benefit. Unfortunately the food we eat can also present risks (the probability that an adverse outcome could occur). There is a long list of types of food contaminants that could present and that have presented risks to the consumers. For example, food-borne contaminants that could cause illness and even death include some parasites, pathogenic bacteria, virus and prions (a type of protein that can cause abnormal protein configurations in the brain).  Some of these are zoonotic (transferred from animals). Toxic chemical contaminants can also be found in foods, such as polychlorinated dibenzo dioxins (PCDDs), polybrominated diphenyl ethers (PBDEs), arsenic and metals.

In a simplistic way, “the dose makes the poison”. Regulatory agencies have used the more complex science behind this simple phrase to set limits for acceptable levels of food-borne contaminants, e.g., limits for Escherichia coli (E. coli) bacteria. Setting those limits can be complicated for some non-lethal contaminants where the benefits of consuming a food must be weighed against the risks. An example here is mercury that accumulates in fish as methylmercury which is a potent neurotoxicant. However, eating fish also confers health benefits as fish are an excellent source of essential omega-3 fatty acids that contribute to neurological development and some evidence points to cardiovascular health.

Note that all foods purchased in Canada, including imported food, must pass Canadian food safety regulations that are implemented through the Canadian Food Inspection Agency (CFIA) but their spot testing does not necessarily result in 100% compliance with regulations.

Goal

To discover for one type of food that you eat: (a) one or more nutrient(s) and its health benefit(s), and (b) one or more contaminant(s) that have been found in that food and its harmful effect Your report MUST be substantiated with a minimum of two peer-reviewed references.

 
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