(Data processing) a. A national medical testing laboratory wants a new computer system to analyze its test results. The system must be capable of processing each day’s results as well as retrieving and outputting a printed report of all results meeting certain criteria, such as all results for a particular doctor or for hospitals in a certain state. Determine three or four major
b. Suppose someone enters incorrect data for a test result, and the error is discovered after the system has entered and stored the data. What program unit is needed to correct this problem? Discuss why such a program unit might or might not be required by most systems.
c. A program unit has been developed that allows users to change data that has been entered and stored incorrectly. Discuss the need for including an “audit trail” that would allow reconstructing the changes later as well as when they were made and who made them.
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Chapter 2 Solutions
C++ for Engineers and Scientists
- (Heat transfer) The formula developed in Exercise 5 can be used to determine the cooling time, t, caused only by radiation, of each planet in the solar system. For convenience, this formula is repeated here (see Exercise 5 for a definition of each symbol): t=Nk2eAT3fin A=surfaceareaofasphere=4r2 N=numberofatoms=volumeofthespherevolumeofanatom Volume of a sphere sphere=43radius3 The volume of a single atom is approximately 11029m3 . Using this information and the current temperatures and radii listed in the following chart, determine the time it took each planet to cool to its current temperature, caused only by radiation.arrow_forwardPlease refer to this textbook: “A. Silberschatz, P. B. Galvin and G. Gagne, “Operating System Principles,”7th Edition, John Wiley & Sons Inc., 2006.” And answer the following questions: Question:22 Assume Program X and Program Y run in different processes. At some time point, the two programs need to exchange data with each other. A. Can the data exchange be made as efficient as if the two programs were run by different threads in the same process? If so, explain how this can be done. If not, please describe the technical issues. B. If Y needs to wait for X, explain how this can be achieved with a semaphore.arrow_forward(a) In computer science and operations research, a Genetic Algorithm (GA) is a metaheuristic inspired by the process of natural selection that belongs to the larger class of Evolutionary Algorithms (EA). Name and describe with example the main features of Genetic Algorithms.arrow_forward
- 1. (2 s) A company's employee is arrested for running a scam website and the company's name is all over the news. The person had been hired into the company's IT department to work at the help desk and it turns out that he was on parole for another felony. The employee had not lied in his application about being on parole, but according to the company's policies the hiring manager did not get to see the whole personnel file for new hires. a) Did the HR staff that should have reported to the hiring manager the candidate's conviction and parole commit an ethical lapse, or was it just a clerical error?arrow_forwardSoftware requirements engineering Question: No. 1 A centralized lock control system which controls the locks of all external doors in University buildings is to be implemented. Some requirements for this system are: a. Staff and students are issued with a card which provides them with access to those buildings which they are authorized to use after normal working hours. b. Access is implemented by wiping a personalized card through a card reader and, if entry is allowed, the door lock is released. c.3 Users must use the card to both enter and leave locked buildings. d. If a card is lost, it should be reported to the security office that will issue a new card and arrange for all access rights associated with the old card to be cancelled. Review these requirements using the checklist and discover possible problems with them and give answer of each part.arrow_forward(Article computer information systems) What are the two primary types of software? How are they different?arrow_forward
- Inevitably, technological progress will advance rapidly, and new developments will be made in the years to come. - The MIT Review of Technology Changes in computing or communication that will likely shape the field's future should be described at length.arrow_forwardexplain the information presented in nontechnical language.arrow_forward18arrow_forward
- Problem 1) Simple Boolean logic operations. Assume we have four input data samples {(0, 0), (0, 1), (1, 0), (1, 1)} to a model. Perform the followings in Python: a) Plot the four input data samples. Label the axes and title as appropriate. b) Write a function that takes two arguments as an input and performs AND operation. The function returns the result to the main program. c) Write two additional functions like in part (b); each would perform OR and XOR operations and return the result to the main program. d) Create a for loop to call the three functions each for data sample each time. e) Store the output of each function in a separate list/array. f) Print out the results for the three functions at the end of your program. g) Note: do not use the internal Boolean (AND, OR, XOR) functions in Python; instead, utilize conditional statements to perform the desired operations.arrow_forward1.Full code and plotting neweful. Task(5): Run the following code and note down the output. Also use real, imag and abs functions to plot real part, imaginary part and magnitude.>> n = [0:5]; x = exp ((2+3j)*n) Task(7): Write a program in Matlab to generate 1.5 s of a 50 Hz Saw tooth Waveform withsample rate fs = 10000 and plot 0.2 s of the generated waveform Task(1): Write a MATLAB code to sum unit step and unit ramp function . subject is signal and system please solve me all three.arrow_forward2. Full code and plotting neweful. Task(5): Run the following code and note down the output. Also use real, imag and abs functions to plot real part, imaginary part and magnitude.>> n = [0:5]; x = exp ((2+3j)*n) Task(7): Write a program in Matlab to generate 1.5 s of a 50 Hz Saw tooth Waveform withsample rate fs = 10000 and plot 0.2 s of the generated waveform Task(1): Write a MATLAB code to sum unit step and unit ramp function . subject is signal and system please solve me all three.arrow_forward
- C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology PtrC++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning