Computer Science

What is meant by the closure of a set of functional dependencies? Illustrate with an example.Need 250 to 300 words with references for each discussion in 2 separate documents. No APA format required and the textbook is attached.

Assignment:Please use the Google Scholar (https://scholar.google.com) to search for a scholarly article concerning some malware incident or application, and the digital forensics solutions.You must summarize the article and state your opinion of what occurred and what steps could had been done differently if any. Remember to cite your references using APA style.Please, summarize the article and answer the following questions:1. Do you agree with the article’s position, approaches, and authors? Why, or why not?2. What could had been done if anything that could improve on the incident?3. What should had been done?4. Was proper procedure used in your opinion?5. Could you include anything else concerning the article?Paper requirement:1. The paper must be in APA format.2. Number of references should be at least 3.3. The length of the paper can be minimum of 3 and maximum of 4 pages (excluding reference page) to support your claims or views.4. No need of cover page.

Discussion1:::Compare inheritance in the EER model (see Chapter 4) to inheritance in the OO model described in Section 12.1.5Discussion2:::What are the differences between structured, semistructured, and unstructured data?Need 250 to 300 words with references for each discussion in 2 separate documents. No APA format required and the textbook is attached.

Why developing a realistic Project Work Breakdown structure by project managers and their teams considered difficult task? Then briefly explain three different ways followed to do it.

Assignment:This assignment will be associated with Legal & Technical Issues in the cloud-based computing environment.1. How does being in a cloud-based environment change data forensics techniques in your opinion?2. Do legal concerns also change from being in the cloud than being on a local device in your opinion?3. If legal aspects change, how does it change associating with the investigation.Please do not include step by step on how to proceed with an incident like this or even attempt describe the steps. This is more of a research type of an assignment to be more prepared for a cloud-based incident.Please, include at least three references including the following one that can be found at (https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6159124).Please, provide at least two more additional references.References:Birk, D., & Wegener, C. (2011, May). Technical issues of forensic investigations in cloud computing environments. In 2011 Sixth IEEE International Workshop on Systematic Approaches to Digital Forensic Engineering (pp. 1-10). IEEE.Paper requirement:1. The paper must be written in APA format.2. Number of references should be at least 3 including the one that can be found in the link in the assignment section.3. The length of the paper can be maximum of 3-4 pages.4. No need of cover page.

Start Excel. Download and open the file named Exp19_Excel_Ch02_ML1_Payroll.xlsx. Grader has automatically added your last name to the beginning of the filename.2 Use IF functions to calculate the regular pay and overtime pay based on a regular 40-hour workweek in cells E5 and F5. Pay overtime only for overtime hours. In cell G5, calculate the gross pay based on the regular and overtime pay. Abram’s regular pay is $398. With 8 overtime hours, Abram’s overtime pay is $119.40.3. Create a formula in cell H5 to calculate the taxable pay. Multiply the number of dependents (column B) by the deduction per dependent (B24) and subtract that from the gross pay. With two dependents, Abram’s taxable pay is $417.40.4. Use a VLOOKUP function in cell I5 to identify and calculate the federal withholding tax. Use the tax rates from the range D21:E25. The VLOOKUP function returns the applicable tax rate, which you must then multiply by the taxable pay.5. Calculate FICA in cell J5 based on gross pay and the FICA rate (cell B23), and calculate the net pay in cell K5. Copy all formulas down their respective columns to row 16.6. With the range E5:K16 selected, use Quick Analysis tools to calculate the total regular pay, overtime pay, gross pay, taxable pay, withholding tax, FICA, and net pay on row 17.Note, Mac users, with the range selected, on the Home tab, in the Editing group, click AutoSum.7. Apply Accounting Number Format to the range C5:C16. Apply Accounting Number Format to the first row of monetary data and to the total row. Apply the Comma style to the monetary values for the other employees. Apply the Total cell styles format to the range E17:K17.8. Insert appropriate functions to calculate the average, highest, and lowest values in the Summary Statistics area (the range I21:K23) of the worksheet. Format the # of hours calculations as Number format with one decimal and the remaining calculations with Accounting number format.9. Insert a footer with your name on the left side, the sheet name code in the center, and the file name code on the right side of the worksheet.10. Save and close the workbook. Submit the file as directed.

Consider the following description in answering all questions in this exam:Suppose that you develop with a team (let us call it Team T) a new separate and independent Project Management System for CSCI 359. The instructor and the students of 359 will be the user of this system. You and your development team (Team T) are not students; you are permanent employees of a software company. Through this system the instructor (let us call it R) will create projects; assign a title and a team of students to each project, see list of all projects. Let S be a project from a list of all projects in CSCI 359. R can monitor all activities in S. R assigns a Project Leader who assigns tasks to project members and monitors their progress. Student-members of Project S post all their work in the Project Management System for their project. R inquires about the status of the project S; see all communication among project members in S; see the created documents (e.g. diagrams, source codes); see who updated and when each document. R can also schedule meetings with the entire project team for S. Students of 359 can only login the system for their assigned project. For example, team-members of S login for Project S. They can schedule events and meetings; communicate with each other via text or video; collaborate in developing all documents, source codes; integrating and testing the developed system. For communication, external systems (e.g. SKYPE, ZOOM) can be used; but communication material (e.g. text, video) should be recorded with time-stamps, and involved members (so that they can be searched by using member names, for example). All other activities of members (e.g. programming, testing, learning, and document preparation) of Project S are recorded. Instructor R logs in the system; chooses a project, and perform search and see all project-activities by the entire team (e.g. meetings) and by each member (e.g. developed diagrams, source codes).Let “Instructor’s Search for Project Activities” be a use case that refers to the activities described in the last sentence in the above project descriptionSuppose for this question that you use the Traditional Approach for the development of this system. Draw a Data Flow Fragment for the sub-processes involved in use case “Instructor’s Search for Project Activities”. Include at least two sub-processes and one data store, and at least one agent (user) that interacts with this process.

What is the cost variance, schedule variance, cost performance index (CPI), and schedule performance index (SPI) for the project?b) How much will it actually cost the company to complete this project, and how long will it really take to complete it based on the performance to date?c) What do you think of the project performance? over/under the budget? behind /ahead the schedule? Justify your answer.

Explain why security professionals need to pay more attention on the physical security? Discuss three (3) approaches/methods that can be implemented to secure the physical resources/perimeter.

what is discrete logarithm problem? how is useful for cryptography?1-write about it in one page2-without plagiarism