Expert Answers

1.1 ADDITIVE AND MULTIPLICATIVE PRINCIPLES Investigate! 1. A restaurant offers 8 appetizers and 14 entrées. How many choices do you have if: (a) you will eat one dish, either an appetizer or an entrée? (b) you are extra hungry and want to eat both an appetizer and an entrée? 2. Think about the methods you used to solve question 1. Write down the rules for these methods. 3. Do your rules work? A standard deck of playing cards has 26 red cards and 12 face cards. (a) How many ways can you select a card which is either red or a face card? (b) How many ways can you select a card which is both red and a face card? (c) How many ways can you select two cards so that the first one is red and the second one is a face card?

The following is a sequence of undo/redo-log records writ­ ten by two transactions T and U: <START T>; <T, A, 10,11>; <START U>; <U, B, 20,21>; <T, (7,30,31>; <U,D, 40,41>; <C0MMIT U>; <T,E, 50,51>; <C0MMIT T>. Describe the action of the recovery manager, including changes to both disk and the log, if there is a crash and the last log record to appear on disk is:

1. <START U>
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2. <COMMIT U>
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3. <T, E, 50, 51>
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4. <COMMIT T>
   •  

1.  
2. <COMMIT T>

 

Calculate his tax saving from this lease agreement as applicable for the farming concer Calculate (a) to (m). (Please draw over the table and not just number them). Date Deductible financing cost Total deductible amount Marginal rate of taxation Total tax saving 28/02/14 Deductible amount with regard to cost price of Truck n/a (b) (e) n/a 40% R34040 a) R85100 28/02/15 40% 28/02/16 R85100 (c) (9) (0) 0 40% (6) R85100 (k) 28/02/17 40% (d) (h) (0) (m) (10) 28/02/18 n/a 40%

Question 1 (a) A digital source generates 5 symbols. Two symbols have probability of occurrence as 0.25 and 0.15 and the remaining 3 symbols have equal probability of occurrences. Use the above information to obtain the source entropy. (3 marks) (b) A linear time-invariant (LTI) system consists of 2 LTI systems that are connected in cascade. Their impulse responses are Sa(10nt) and Sa(20nt). The input signal to above system has an autocorrelation of 58(T). Examine the above system and answer the following. (i) Determine the power transfer function. (6 marks) (11) Derive the output power spectral density and sketch the same. (4 marks) (c) A communication channel with 5 MHz bandwidth supports a data rate of C at a certain SNR. When the SNR is increased by 2 units, the data rate is doubled. Analyse the above system and obtain the new SNR (in dB scale) and the new data rate. (12 marks)

The internal generated voltage EA of a Y-connected, three-phase synchronous gen- erator is 14.4 kV, and the terminal voltage V, is 12.8 kV. The synchronous reactance of this machine is 4.1, and the armature resistance can be ignored. (a) If the torque angle of the generator 8 = 18°, how much power is being supplied by this generator at the current time? (b) What is the power factor of the generator at this time? (c) Sketch the phasor diagram under these circumstances. (d) Ignoring losses in this generator, what torque must be applied to its shaft by the prime mover at these conditions?

Case study

-The workload management in XYZ Company(Workload management is the process of efficiently distributing and managing work across XYZ company team. When successfully done, workload management maximizes employee performance and helps melt away chaos, leaving XYZ company team feeling satisfied at the end of each day rather than overwhelmed. Team members will feel confident about their work volume and deliver higher quality work at a faster pace, XYZ company team facing high work load resulting in low productivity and less efficiency and effectiveness, you are appointed as modeler to study analyze and solve the problem and to improve The workload management in XYZ Company, In particular, identify the main causal loop diagrams &stocks and flows in the above conceptualization case study

Answer should include:

• The definition of feedback along with two types of feedback
• Definition of stock and flow
• History background of the problem situation and how could affect the progress of the problem
• The model and models steps and how could help in problem solving
• Use casual loop diagram to investigate the problem and finding the root of the problem through the diagram.
• Use stock and flow diagram to investigate the problem and finding the root of the problem through the diagram
• Integrate both diagrams together
• Recommendations to help the company management finding clear solutions to the problem situation

 

 

City College is a community college with a $100 million endowment. Since its establishment, it has had a fixed investment policy of 55% stocks (spread 10/15/30 amongst small, medium and large cap stock portfolios), 35% bond index fund (VBMFX) and 10% Equity REITs over the years 2004 – 2020.

Since the role of the endowment in meeting budget needs has increased dramatically in the past few years, City College decided to review its past performance and future contributions to the institution. The school hired your company to assess its current performance and to recommend an optimal portfolio mix. In particular, the school feels strongly that 0.8% per month represented a “floor” below which the portfolio expected return should not drop and wants you to suggest an efficient asset allocation to achieve this goal.

Your manager has decided to assign the task to your team. You are required to address the following questions. For simplicity, we assume that short sales are allowed (unless explicitly ruled out) and borrowing at the risk-free rate is possible.

1. How well did the City College portfolio (with its current asset allocation) perform over the 2004–2020 period? Provide performance statistics including the Sharpe ratio of the portfolio. Also, provide the committee members with performance statistics for some benchmark portfolios over the same period. (You might notice that this allocation requires constant rebalancing: we assume that the rebalancing is done at the end of every month.)

answer only

1.The ability of the aggregate to resist polishing is tested with the accelerated polishing test.

Group of answer choices

True

False

2.Los Angeles Abrasion Value tests the aggregate's ability to withstand impact and abrasive action

Group of answer choices

True

False

6.

For road construction in countries that experience snow, sulphate soundness test is appropriate.

Group of answer choices

True

False

10.

High viscosity bitumen is used in producing asphalt mixes for hot climates.

Group of answer choices

True

False

0 Asments as 190 Ecomme X C Homel Cheo com + + ector Hands-On Project 6-2 In this pct you want mig att The name of a dettonowy bom one of the content on the coct. One the process the wood where the variable signed to event object and target is the bed to received the protection selected by the user from one of the elections. The event will be the dung wert. Apreview of the own Hands-on Project 6-2 Government Sites on the Web Conged Pret Do the following: your code editor to the project 2 html and project0642_t your com contach project0-62.tand project06-02 2. Go to project your code and othach the other the See you choose the Page 2 / 3 + ? ? a = ?? X BD WWWLWWWW 3. Go to the project06-02.js file in your code editor. Add an event listener that runs an anonymous function when the page to 4. Within the anonymous function, add a statement that uses the querySelectorAl method to create a node list of all elemente matching the CSS FormigovLinks select Store the node list in the alSelect variable 5. Also within the anonymous function: Insert a for loop that iterates through all of the contents of the Select nodes Alcach oration of the list do the following Apply the onchange event handler to Select to run an anonymous function when the selection list option is changed. Add the anonymous function am b. Within the nested anonymous function retrieve the value property of evt.target and store it in the linkURL variable c. Within the nested anonymous function: Use the window.open() method to open a new browser window with URL as the not the windo not have to set a name for the window or any window options. Store the window under the new Win variable Save your changes to the file and then open project06-02.html in your web browser Verily that by selecting an entry from one of twee selection lists, the web page for that entry opens in a new browser tab or window.

 

 

(08) Can there be a change in supply of a good even if there is no change in price? Justify