Computing and Algorithms II: Programming Assignment 5 CS-102 Fall 2016 In this programming assignment, you will demonstrate your knowledge of graphical user interfaces by revising the tropical storm data program from Programming Assignment 4 to incorporate a graphical user interface. New Requirements For this assignment, you should add a graphical user interface to your tropical storm data program. All user input and program output should be conducted through a graphical interface. (Thus, you should never need to use the System.in and System.out objects, except for debugging purposes.) All previous functionality in Programming Assignment 4 should be available and functional through the graphical user interface. It should be possible to perform any and every function possible in Programming Assignment 4 in your new version. You may use any of the standard Java AWT components (including Swing), in any combination you wish, in order to implement your GUI. You should use the Java 1.1 event model (i.e. the one presented in class) to interface these components with your application code. Your program should be an application, not an applet. Your program must use the event-driven programming model (i.e. components, events, and listeners). It is technically possible to write a GUI program with

 

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1. List the criteria that you think Target should use in screening potential strategic brand alliance. Be as specific as possible.

2. Propose a strategic brand alliance in a category where Target currently lacks one. Evaluate the pros and cons of the alliance from the perspective of both the Target and proposed partner.

 

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MGT 554. Contracts and Procurement

Assignment 4

Understanding Different Contract Modalities

Contracts can be configured in various ways, but most are divided into one of two categories: fixed pricecontracts (also called lump sum contracts) and cost plus contracts (also called cost reimbursable contracts). Following is a summary differentiating the characteristics of these two contract modes:

Fixed price contracts. Sellers agree to provide well-defined goods and/or services by a specific date at a fixed price. Sellers bear most of the risk on this contract, because if there is a cost overrun, the seller must assume the burden of the loss. Fixed price contracts also have “opportunities,” because if the seller’s costs are very low, they have an opportunity to increase their profits.

Cost plus contracts. Buyers agree to reimburse sellers for whatever costs they incur in carrying out the contracted work. Clearly, buyers face a serious risk of cost overruns here, because if contractors spend too much, buyers are obliged to reimburse them. In order to create incentives for buyers to save money, some variations on cost plus contracts have emerged, including:

· cost plus incentive fee contracts (CPIF). With the CPIF contract, a table is created that shows how contractors can be paid defined bonuses if they deliver their products early (e.g., $5,000 bonus if delivered one week early; $8,000 bonus if delivered two weeks early).

· cost plus award fee contracts (CPAF). With the CPAF contract, a pool of award fee money (i.e., a bonus pool) is created. If contractors do a great job on their contracts, an award fee panel may elect to pay them a bonus with money taken from the award fee pool of money. Judgments of performance are subjective.

· cost plus fixed fee (CPFF). With CPFF contract, buyer and seller negotiate a fee (i.e., profit amount) that the buyer will pay the contractor, given that work is completed in a satisfactory manner. The fee is negotiated before any work has begun. Thus contractors know ahead of time what their profit levels will be. They have no incentive to increase costs in hopes that that will lead to higher profit levels. CPFF contracts are the dominant contract mode for research and development projects, which are high risks efforts.

A commonly employed variant of the cost plus contract is the time and materials contract. This is a cost reimbursable contract where contractors are reimbursed for the time they put into a job plus expenses they incur in purchasing materials. Unlike the cost plus contracts, there is no explicit “plus” associated with the contract. This does not mean profits cannot be gained. If profits are factored into this type of contract, they must be built into the salaries and material costs associated with performing the contract.

Assignment

1. For the following types of undertakings, which contract modes are most appropriate? Be prepared to explain the rationale behind your choice.

· We want to order a pencil manufacturer to produce 20,000 pencils for us

· We want to have a 300 meter bridge built to span a local river

· We want to have a contractor design a brand new circuit board that has state-of-the-art capabilities

· We want to contract out work to operate our small factory

2. Describe the relative benefits and weaknesses of a CPIF contract vs. a CPAF contract.

 

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Question 1 and 3 do not need to be completed. Please do only question 2

Instructions: The HW5 start.m Matlab file makes 2 figures. As usual, paste these two completed

figures into a single Word document that you submit with the written answers of the other parts. Name

your file HW5 LastName.docx (e.g., mine would be HW5 Harig.docx) and a single Matlab script similarly

named (mine would be HW5 Harig.m) to the D2L Dropbox. You will need to modify the HW5 start.m

to add the equations from lecture to do the calculations. It provides some structure for print statements,

plotting, etc.

2. In class we talked about the Stokes settling velocity for particles (spheres) as they fall in a fluid.

Here we wish consider single spheres, and develop settling velocity graphs and codes to understand, for

example, the effect of particle size on the settling speed.

Figure 1: This corrects a typo from lecture. See the red ?f .

Use the equations we derived in class for a specified isolated sphere settling in a fluid. For now take it

to be quartz in water. There is a file hw5start.m which does most of the setup for you. I also supply a

scrap of code dragcoeff.m in which the relationship between drag coefficient, Cd, and Reynolds number,

Re, is tabulated (from Ferguson and Church, 2004).

a) Plot the time evolution of the vertical speed, w(t). Report three cases, with D = 10 micrometers,

1 mm and 10 cm. You will need to add expressions to calculate w max, re, and dwdt. I put

‘REPLACE’ in capital letters to help you find where.

1

0 1 2 3 4

Time in seconds #10-6

0

0.2

0.4

0.6

0.8

1

Velocity in cm/sec

#10-3 Particle Diameter = 10 micrometers

0 0.2 0.4 0.6 0.8 1

0

0.2

0.4

0.6

0.8

1

0 0.2 0.4 0.6 0.8 1

0

0.2

0.4

0.6

0.8

1

Figure 2: This is what your graph should look like for D = 10 micrometers.

b) For panel 2 of your first figure, which is for D = 1mm, also plot the horizontal line which represents

w¯ in red. If we tried to also plot this for D = 10cm it would not match what we calculated. Why

might it not match? The second figure below will help with this as well.

c) Now we will do this process again but make a plot of terminal velocity vs. particle diameter.

We will do this for two materials: quartz sinking in water, and quartz sinking in air. I created

another copy of the calculation loop in the HW5start.m Take D to go from 10-5 m to 1 m, with 5

logarithmically spaced increments in each decade of particle size. See the matlab file where we use

the command logspace to do this.

d) Why do the lines agree with the red D2

line that I drew for part of the diameters and then disagree

at large diameters?

 

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