“complete and sufficient”, two important characteristics of a good class design, when a class is “incomplete”, or “insufficient”, how can that effect dependency relations of the class?
“complete and sufficient”, two important characteristics of a good class design, when a class is “incomplete”, or “insufficient”, how can that effect dependency relations of the class?
For example, I argue that an incomplete class becomes highly dependent on other classes (but these classes might not depend on the class in the same way). What do you think? why are these characteristics important?
A good discussion can benefit from examples, please provide some.
Discuss how epidemiologic methods are used to evaluate
Visit the Healthy People 2030 website, Topics and Objectives page (Links to an external site.) (Links to an external site.) and explore some topics of interest to you. Discuss how epidemiologic methods are used to evaluate Healthy People 2020 objectives. Give an example. The example can be one you created or one from an actual study. Include the primary goal/purpose of the descriptive or analytical study, design type in the category chosen, uses of analytic or descriptive type, at least one advantage and disadvantage of the design type.
Consider the curve C1 consisting of the straight line from (1, 0) to (−1, 0), and the curve C2 consisting of the arc of circle from (1, 0) to (−1, 0), in the counterclockwise direction.
Consider the curve C1 consisting of the straight line from (1, 0) to (−1, 0), and the curve
C2 consisting of the arc of circle from (1, 0) to (−1, 0), in the counterclockwise direction.
- Compute
Z
C1
e
x
dx + x dy, Z
C2
e
x
dx + x dy. - Compute
Z
C1
(1 + y) dx + (x + 2y) dy, Z
C2
(1 + y) dx + (x + 2y) dy. - What do you notice?
Consider the curve C consisting of the graph of y = e
Consider the curve C consisting of the graph of y = e
x
for x ∈ [0, 3]. Compute
Z
C
e
2x
ds
and
Z
C
xy dx + e
−x
dy.
- Consider the curve C consisting of the straight line from (0, 0) to (1, 0), then from
(1, 0) to (0, 1) along the circle of radius 1 around the origin (in the counterclockwise
direction), and finally the straight line from (0, 1) to (1, 0). Compute
Z
C
x
2
dx + x dy.
Consider the curve with parametric equation
Consider the curve with parametric equation
x(t) = t + sin t, y(t) = t + 2e
−t
,
where t ∈ [−2, 10].
(a) Find the equation of the tangent at the point (0, 2). Give your result in the
form y = mx + p.
(b) Find the coordinates of the points where the is a vertical tangent, and the
points where there is a horizontal tangent.
- Find the length of the curve with parametric equation
x(t) = t
2
cost, y(t) = t
2
sin t, t ∈ [0, 1].
Describe one more relevant article/s on the same topic in the news that focus on a recent aging-related policy (within the past 30 days) from local, state, national, or international news sources.
To complete this assignment, students will either post on something in the news one time or critique the news that’s presented.
1) Listen to the podcast: https://www.npr.org/2019/10/29/774541010/fake-news…
2) Check out the following resources: https://newslit.org/ & https://get.checkology.org/what-is-checkology/
3)
The summary can describe one more relevant article/s on the same topic in the news that focus on a recent aging-related policy (within the past 30 days) from local, state, national, or international news sources. A “current event” is an important topic that is covered/discussed by the news media. Three additional students will critique the sourcing, content, and contribution of the article using criteria provided in class.
Deterministic methods in operation research- industrial engineering
Question 1 [20 points]
Read the description of the following optimization problem. Consider then the components of these problems that are itemized. For each of these components, identify whether it belongs to the data, the variables, the constraints or the objectives. Explain why?
United flies over 2500 domestic flight legs each day. To this end, it uses about 500 aircrafts for 10 different
fleets. United must therefore decides how to assign aircrafts and crews to flight legs in the best way possible.
The aim is to produce such an assignment that will then be repeated identically each week day (weekend
schedules are treated differently). Two opposing considerations come into play when evaluating a flight leg
to aircraft assignment. If the aircraft assigned to a flight leg is too small, it will not be able to accommodate
all of the customers’ demand, which will result in revenue loss for United. If the aircraft assigned to a flight
leg is too large, then United will lose the revenue that could have been obtained from the unoccupied
seats. Further, it will also incur loss from using a larger than necessary aircraft, which is more expensive to
operate. Meanwhile, United needs to assign a group of crew members to a set of scheduled flights such that
all the scheduled flights are covered. The max crew duty is 14 hours out of a 24-hour day. United’s primary
objective in this problem is therefore to maximize profit, which is computed as the difference between ticket
sales revenue and the sum of operating costs (including crew cost, fuel cost and landing fees).
- The number of customers traveling on a flight leg (e.g., flight leg from IAH to ORD in the slides).
- The group of crew members assigned to a specific flight leg from MCO to IAH.
- If the first flight leg assigned to aircraft 1 lands in Houston, the next flight leg assigned to aircraft 1
must take off from Detroit. - The max crew duty is 14 hours out of a 24-hour day.
- United tries to maximize profit.
- The operating cost of a plane includes crew cost, fuel costs and landing fees.
- Is Houston assigned as the Hub for all fleets?
1 - Each pilot could not fly five consecutive days.
- Is it needed to purchase additional aircrafts to meet customer demands?
- Airline ticket price for the Origin-Destination pair MCO to ATL.
Question 2 [20 points]
A landscaping supply company produces decorative stones. A ton of coarse stones requires 2 hours of
crushing, 5 hours of sifting, and 8 hours of drying. A ton of fine stones requires 6 hours of crushing, 3
hours of sifting, and 2 hours of drying. The coarse stones sell for $400 per ton. The fine stones sell for $500
per ton. In a work week, the plant is capable of 36 hours of crushing, 30 hours of sifting, and 40 hours of
drying. Based on the demand forecast, the quantity of coarse stones produced should be at least twice the
quantity of fine stones produced.
First - Formulate an optimization model to decide how much of each kind of stones to produce to maximize
total revenue. - Solve your model using the Excel solver.
- Using a two-dimensional plot, solve your model graphically.
Then, by modifying your two-dimensional plot, answer the following questions: - How much would it be worth to get another hour of crushing time?
- How much would it be worth to get another hour of sifting time?
- Could you find the range of the prices for the fine stones such that in the optimal solution, the
quantity of coarse stones produced is exactly twice the quantity of fine stones produced.
Question 3 [20 points]
Consider the following optimization model where the decision variables are x1 and x2 and where α is a
parameter (fixed value) of the problem. , i.e., it is not a decision variable:
max x1 + 2×2 (1)
s.t. x1 + αx2 ≤ 2 (2)
(P) x2 ≥ x1 − 5 (3)
x2 ≥ 0 (4) - Is this optimization model linear or nonlinear, continuous or mixed integer?
- Plot the feasible region of this problem when α = 1 and the objective function.
- For what value of α does (P) have multiple optimal solutions? Explain.
- For what value of α does (P) have a unique solution? Explain.
- For what value of α when (P) is unbounded? Explain.
- If constraint x
2
1 + x
2
2 ≤ 1 is added, could you find the range of α values such that the problem is still
feasible?
2
Question 4 [20 points]
Find the local/global minima and maxima for the following function. You are expected to draw an approximate function curve and point out the local/global minima and maxima in the graph. You do not need to
provide the exact solution for each local/global minima or maxima.
f(x) = 3x + 2(x + 2)2 + 3(x − 3)3 − (x − 4)4
, where − 5 ≤ x ≤ 1 or 0 ≤ x ≤ 6.
Question 5 [20 points]
Write each of the following as compactly as possible using summation and enumeration symbols.
3 - min(x − 1)2 + (x − 2)2 + (x − 3)2 + (x − 4)2 + (x − 5)2 + (x − 6)2 + (x − 7)2
- (x1 − 1)2 + (x1 + x2 − 2)2 + (x1 + x2 + x3 − 3)2 + (x1 + x2 + x3 + x4 − 4)2 ≥ 1
-
y1
(1+y2+y3+y4+y5) +
y2
(1+y3+y4+y5) +
y3
(1+y4+y5) +
y4
(1+y5) ≤ 1
(1+y3+y4+y5)
y1+y2 +
y2+y3
(1+y4+y5) +
y3+y4
(1+y5) ≤ 1
y1+y2+y3
(1+y4+y5) +
y2+y3+y4 ≤ 1
y1+y2+y3+y4
(1+y5)
(1+y5)
≤ 1
4.
x1 + y1 + z1 ≤ 3, x1 + y1 + z2 ≤ 4, x1 + y2 + z1 ≤ 4, x1 + y2 + z2 ≤ 5
x2 + y1 + z1 ≤ 4, x2 + y1 + z2 ≤ 5, x2 + y2 + z1 ≤ 5, x2 + y2 + z2 ≤ 6
5.
max
z1,1 + z2,1 + z3,1 + z4,1
z1,1 ≤ 2
z1,1 + z1,2 + z2,1 ≤ 3
z1,1 + z1,2 + z2,1 + z1,3 + z2,2 + z3,1 ≤ 4
z1,1 + z1,2 + z2,1 + z1,3 + z2,2 + z3,1 + z1,4 + z2,3 + z3,2 + z4,1 ≤ 5
z1,1 ≥ 0, z1,2 ≥ 0, z2,1 ≥ 0, z1,3 ≥ 0, z2,2 ≥ 0,
z3,1 ≥ 0, z1,4 ≥ 0, z2,3 ≥ 0, z3,2 ≥ 0, z4,1 ≥ 0
Specify the requirements for a software system.
For this assignment you will specify the requirements for a software system. Software systems are assigned during in-class interviews, and your information about your application to specify will come from in-class client interviews. In these interviews, you will ask your “client” (other students) about the application you are expected to specify.
The purpose of this assignment is to learn how to write a fairly complete and precise requirements specification, which is a critical step in developing a large software system. You will utilize all of the methods discussed to elicit requirements, including from the client directly. Client interviews will be held during lecture.
The deliverable is a single electronic document that contains your software requirement specification. There is no explicit requirements for the format, but as a minimum we have provided a simple example here Feel free to expand, improve, or find examples elsewhere (like the IEEE guidelines
What is the aging policy problem that matters most to you?
What Aging Policy Problem Matters Most to Me and Why
Prepare a written essay of not more than 750 words on an aging policy or problem that matters most to you and why. The policy/problem can be local, state, national or international. Your interest can be personal, ethical, social, economic, religious, but it should move beyond what you’ve studied in other classes and include a connection to public policy.
Your discussion must include the following:
1) What is the aging policy problem that matters most to you?
2) Why do you care about this issue?
3) Why should policy makers care about this issue?
Some illustrative examples are provided in Chapter 7 of your textbook.
Additional potentially relevant policy problems include i) the epidemic of loneliness among older adults, ii) evacuation of older adults during wildfires in California and iii) the cost and quality of long-term care in the US.
Please note that this is a personal reflection paper. It should reflect you and your voice and be written by you and only you. You do not need to offer a solution to this problem; and you do no need to provide appropriate citations, however, your paper must be factually accurate. For example, if you focus on loneliness and write that the vast majority of older adults are lonely, you will lose points as this is not a true statement. You should explain why the policy/problem is important and why others (e.g. policymakers) should pay attention to it. Upload this to Blackboard under the Assignments section.
Citation style:APA7
Number of sources 2
Write a summary of the article (500–750 words) and discuss the significance of the information to you personally and/or implications for public health and policy.
Honors Students: Complete this assignment according to the directions provided in the “Honors Addendum,” located in Class Resources.
Find an article that pertains to nutrition and health from a current peer-reviewed scientific journal. The article must be an Empirical Research Articles published within the last 2 years preferably, 5 years at most.
Write a summary of the article (500–750 words) and discuss the significance of the information to you personally and/or implications for public health and policy.
- Empirical research is based on observed or measured phenomenon and derives knowledge from actual experience, meaning the researchers gathered data on subjects in a population through a particular methodology (methods section), described what was learned (results section which usually include statistics), and discuss those results (discussion section may be called conclusions). Be sure to include the necessary APA headings in your paper.
- You only need one in-text citation (in APA format) for this article summary. You may begin your paper with an introductory sentence that includes key information such as author, date, and source. Example below:
- Author or Author et al. (Year) looked at …
- The remainder of your summary should use phrases like “The author states…” or “This study says…” to let the reader know it is from the same article.
- Only ONE small quote is allowed. This should be a summary in your own words.
- The implication section may be written in first person.
Honors Addendum
BIO-319 Applied Nutrition
Honors Competency Alignment
The following checked competencies align to the readings, supplemental materials, and assignments below that are differentiated for honors students enrolled in this course.
☐ Make ethically sound decisions that are supported with logic and aligned with contemporaries in various disciplines.
☐ Exhibit the qualities of great leaders who are able to inspire, motivate, and change or improve the conditions within their sphere of influence.
☒ Integrate theory from the classroom to serve within various discipline-specific settings.
☒ Use evidence and research for the purposes of making data-based decisions that are supported by literature from relevant fields of study.
☐ Critically evaluate the quality of evidence and consider all sides to an issue before formulating a position.
☐ Consider the perspectives of diverse cultures, traditions, and worldviews when interacting with people, texts, and ideasATTACHMENTS
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