## Linear Engineering Systems

Perform the following tasks (label cells as task numbers).  Note the first cell (unnumbered) should start with the identification “LAB 1” followed by yourFull Name and section number. Example:

%% Lab 1 by Your_Name_Here  Section 61 or 62

In this first lab, you will create some fun-looking Lissajous figures. This will give you an opportunity to learn some basic MATLAB skills and commands.

1. Open MATLAB and create a new script file. You can either use the keyboard shortcut (Command or control +N) or do this by clicking the gold + icon in the upper left portion of the MATLAB window. Add your name and other info, after first typing %% to start a new section in the script.

You can create a vector of time values using the notation:

>> t = start : step : stop

Example:

>> t = 0 : 2 : 10

t =

0     2     4     6     8    10

Notice the values are printed to the screen. This can be a problem if you are plotting points and hundreds of numbers clutter your screen. To suppress such unwanted output, terminate the line with a semi-colon.

>> t = 0 : 2 : 10;

Question 1: Create a new section using %%, and generate a vector t of numbers from 0 to 2π using a step-size of 0.01 You can find π by typing pi

Use the size command to find the exact number of points in your time vector t.

 Question 1: The exact number of points in the vector 0 : 0.01 : 2*pi is: __ __ __

>> help size

Questions2-5:(4 points)

Create the following outputs using proper Matlab syntax. This assumes the vector t has already been defined.

Using subplot, plot:   y1(t) vs t, y2(t) vs t and  y2(t) vs y1(t).  You should be able to get a tiled plot similar to that shown below, but which uses different constants. Your graphs will be slightly different!Here is some code to get you started with the first tile. (Assumes the time vector has already been entered.)

figure

y1 = sin(5*t);

subplot(2,2,1)

plot(t, y1, ‘r’, ‘LineWidth’, 2)

set(gca,’fontsize’, 18);

grid on

title(‘y1(t)’)

axis([0 2*pi -1 1])

xlabel(‘t’)

Replace the tiled plot below with your final plot for four points.

The graph below is for  and instead.

Question 6:What happens to the Lissajous curve if both of the arguments to the sine and cosine waves double?

Question7: What shape is the Lissajous curve if instead:   and  ?

Notice, the constants are the same.

Question8: What shape is the Lissajous curve if instead:   and  ?

Questions 9 and 10:Just for fun, run the code in the file Lissajous_fun.m that is based on code written by Nick Trefethen. It uses some advanced notions that you need not master at this stage. Run the file a few times, trying different parameter values in the last section with the 3D cube. Then paste in your favorite “Cube with Lissajous Faces” image.

Paste 3D cube here.

## Practical Applications of ANOVA

• Click the above link to access the discussion board area. Each week’s discussion prompt will become available upon that module’s start date.

• ### 7-2 Final Project Milestone Two: Statistical Tools and Data Analysis

Submit a paper and a spreadsheet that provides a justification of the appropriate statistical tools needed to analyze the company’s data, a hypothesis, the results of your analysis, any inferences from your hypothesis test, and a forecasting model that addresses the company’s problem.

For additional details, please refer to the Milestone Two Guidelines and Rubric document in the Assignment Guidelines and Rubrics section of the course.

• ### Assignment Guidelines and Rubrics

This is a link to the folder containing the guidelines and grading rubrics for the different assignment types that will be used in this course.

## University Database

A prestigious university has recently implemented a consolidation strategy that will require it to centralize their student records. In order to move forward, the local university will need to develop a data model that will retain student records and perform various data extract transform and load (ETL) processes. Imagine that you have been hired as a database consultant to assist in the development of a data design strategy for the student records.

You met with various university subject matter experts and have determined the following after performing various business analysis processes:

• Faculty groups are divided by core competencies that the university offers. For example, there are groups such as the Art Faculty, Computer Technology Faculty, Language Faculty, and Science Faculty. Each faculty member has an assigned Dean and is designated to teach at one particular campus and school. They are able to teach as many courses as required.
• Courses are categorized by course code and title. Certain courses have prerequisites and the university has asked for this to be cataloged as well.
• There are various schools within each campus. For example, the Los Angeles campus holds the following schools: School of Science, School of Law, and School of Computer Technology. Additionally, each school offers different professional study programs such as Forensic Computer Science, Marine Biology, Business Management, and Civil Engineering to name a few.
• The study path for students requires that they be enrolled in a specific professional study program. The professional study program requires the students to complete a specific set of core courses. The university also requires that an online grade book be available. The online grade book should show grades awarded to students for specific courses and the term they completed the course.
• The university identifies each student by his or her name, date of birth, social, and professional study program.

Using these findings, write a three to four (3-4) page paper in which you:

1. Analyze the university’s requirements and provide a proposal to organize all the required data elements. The proposal should include the following:
1. Provide an Entity Relationship Model (ERM) that will describe the data structure that will store all data elements. Note: The graphically depicted solution is not included in the required page length.
2. Describe any assumptions or limitations for each relationship. For example, professors are able to teach more than one course or students can only be enrolled in one program.
2. Create the primary key and foreign keys using a UML Class diagram for each table.
3. Suggest at least four (4) types of business intelligence reports that could help the university in course management, student enrollment, or historical tracking. Support your answer by providing specific business functions that these reports could assist executives of the university.
4. As an alternative for development of the database, you are considering outsourcing the functions above. Research the Internet and other media sources for vendors who develop registrar and school management database systems.
1. Suggest three (3) vendors that developed and are employing efficient registrar and school management database systems and support your reasons to choose from one (1) of these three (3) vendors.
2. Compare and contrast the key aspects that each system offers. Examples of system aspects include but not limited to cloud based, pricing model, open source, etc.
1. Use at least four (4) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources.

• Be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides; references must follow APA format.
• Must have introduction and conclusion.
• At least one in-text citation in each paragraph.
• All paragraphs must be labeled.
• Include a cover page containing the title of the assignment, the student’s name, the professor’s name, the course title, and the date. The cover page and the reference page are not included in the required page length.
• Include charts or diagrams created in Excel, Visio, MS Project, or one of their equivalents such as Open Project, Dia, and OpenOffice. The completed diagrams / charts must be imported into the Word document before the paper is submitted.

## Database Modeling and Normalization

Imagine that you work for a consulting firm that offers information technology and database services. Part of its core services is to optimize and offer streamline solutions for efficiency. In this scenario, your firm has been awarded a contract to implement a new personnel system for a government agency. This government agency has requested an optimized data repository for its system, which will enable the management staff to perform essential human resources (HR) duties along with the capability to produce ad hoc reporting features for various departments. They look forward to holding data that will allow them to perform HR core functions such as hiring, promotions, policy enforcement, benefits management, and training.

Using this scenario, write a three to four (3-4) page paper in which you:

1. Determine the steps in the development of an effective Entity Relationship Model (ERM) Diagram and determine the possible iterative steps / factors that one must consider in this process with consideration of the HR core functions and responsibilities of the client.
2. Analyze the risks that can occur if any of the developmental or iterative steps of creating an ERM Diagram are not performed.
3. Select and rank at least five (5) entities that would be required for the development of the data repositories.
4. Specify the components that would be required to hold time-variant data for policy enforcement and training management.
5. Diagram a possible 1:M solution that will hold salary history data, job history, and training history for each employee through the use of graphical tools in Microsoft Word or Visio, or an open source alternative such as Dia. Note: The graphically depicted solution is not included in the required page length.
6. Plan each step of the normalization process to ensure the 3NF level of normalization using the selected five (5) entities of the personnel database solution. Document each step of the process and justify your assumptions in the process.
7. Diagram at least five (5) possible entities that will be required to sustain a personnel solution. The diagram should include the following:
1. Dependency diagrams
2. Multivalued dependencies

Note: The graphically depicted solution is not included in the required page length.