Chapter 3 discusses methods to assess the quality of simulations. You learned about three different views of simulation quality.

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Suppose you lead a task force that is developing a simulation to provide strategic planning recommendations for property use zoning for a county of 750,000 residents. The zoning board and county commissioners want a simulation that allows them to assess the impact of various zoning decisions based on a variety of dynamic factors, including age, race, education, and income status. Which of the three views discussed would provide the best quality assessment for this type of simulation? How would you ensure the highest level of accuracy with you simulation, and how would you go about determining accuracy

 

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unit 1 8 jounral

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unit 1

Hurricane Katrina is still discussed regularly although it occurred in 2005. What is the most important lesson that you learned from studying Hurricane Katrina?

Your journal entry must be at least 200 words in length. No references or citations are necessary

unit 2

Fires can be terrifying events. Has there ever been a fire in your community? If so, what was the experience like for you? What impact did this fire have on your community? If not, think of a fire you observed through the media or news. What do you think it would be like to be a member of that community?

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 3

Have you ever prepared for a possible hurricane? If so, reflect on this experience. What efforts did you take, and did you feel you did enough to prepare? If not, reflect on the efforts you would take if ever in that situation. How would you prepare for a hurricane?

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 4

Flooding costs the United States billions of dollars per year in recovery efforts after storms. What is your flood risk in your home? Is this something that you worry about? Have you ever experienced a flood? If so, what were the circumstances? If not, share what you think it would be like to deal with a flood in your home.

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 5

We can see there are areas of concern with both land- and water-based tornados making an impact on daily activities. If you were an emergency manager in an area with a combination of land and water nearby, what precautions would you find most important? Why?

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 6

Heat-related emergencies lasting an extended time can cause extreme issues for special-needs populations as well as test emergency services.

How would you prepare for a heat-related emergency? What do you think would be the most important step in your preparations? Why?

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 7

The Ebola virus, and other infectious diseases like it, scare many in the healthcare industry. Some feel called to visit those infected areas to help with the efforts, educate the citizens, and care for the sick. If a loved one were considering taking part in these efforts, what thoughts would run through your mind? Would you be supportive, or would you try to talk him or her out of it? Would you also want to help? Explain your thinking.

Your journal entry must be at least 200 words in length. No references or citations are necessary.

unit 8

Based on the case studies that we have examined in this course, what are the vulnerabilities that your community faces today, and share the best practices that you could utilize in your community from the case studies we have examined.

Your journal entry must be at least 200 words in length. No references or citations are necessary.

 

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Maxwell Law of electromagnetic waves

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  1. (a) (5 pts) State the equations of maxwell Law of electromagnetic waves.
    (b) (10 pts) Show that the equation described below satisfy Maxwell’s
    second order differential equation of electromagnetic wave
    Ey(x, t) = 5(N/C) sin(107 x – 3•1015t) k
    where t is in seconds and x is in meters.
    .
    (c) (5pts) What is the direction and maximum value of the magnetic field
    strength of the wave described by the above equation?
  2. (16 pts) Young’s double-slit experiment is performed with 620-nm light
    and a distance of 1.00 m between the slits and the screen. The 8th
    interference minimum is observed 5.26 mm from the central maximum.
    Determine the spacing of the slits.
  3. (17 pts) An unpolarized light 4 W/m2
    in intensity is passed through a
    polarizer and two other analyzers as depicted below. The transmission
    axes are θ1=20
    o
    , θ2 = 10
    o
    and θ3 = 70
    o with respect to the vertical axis.
    What is the intensity of the light after it passes the last analyzer?
    Polarizer 1st analyzer 2nd analyzer
    θ1 θ2 θ3
  4. (16 pts) Use Ray Tracing Diagram to locate the position and height of the
    image by a diverging lens. Give percent error with the theoretical
    calculation using lens makers equation. The focal length of the lens is 5
    cm, the distance of the object from the lens is 10 cm and the height of the
    object is 4 cm.
  5. (16 pts) Calculate the minimum thickness of a soap-bubble film that
    results in constructive interference in the reflected light if the film is
    illuminated with light whose wavelength in free space is λ = 620 nm.
  6. (15 pts) A grating with 50 grooves/mm is used with an incandescent light
    source. Assume the visible spectrum to range in wavelength from 400 nm
    to 700 nm. In how many orders can one see (a) the entire visible spectrum
    and (b) the short-wavelength region of the visible spectrum?

Sample Solution

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Titanium alloy is commonly used orthopedics

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Titanium alloy is commonly used orthopedics and dental implants due to great biocompatibility and corrosion resistance. The most wildly used type of titanium alloy is Ti-6Al-4V. however, some studies shows that vanadium present in this alloy cause allergic reaction in human tissue. Also, aluminum can cause neurological disorders. So, there is a need to new develop a new titanium alloy without the present of these elements. The new recommended titanium alloy with Manganese due to its low toxicity.

The intellectual merit of the proposed study is to find a new titanium alloy that is compatible with medical applications like orthopedics and dental implants and to increase its compatibility. The current solution Ti-6Al-4V has aluminum and vanadium which can cause problem in long term uses. The goal of this research is to develop titanium alloy without cytotoxic elements.
Broader impacts:
The broader impacts of the proposed study involve how to develop a new titanium alloy that have better mechanical properties than the current used titanium alloy. The new titanium alloy will provide great alternative for long term implants and widen the use of titanium alloy in medical applications.

Sample Solution

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