The Grand Canyon University (GCU) College of Doctoral Studies has approved a limited number of qualitative and quantitative research designs commonly referred to as the GCU Core Designs. Doctoral learners must be acquainted with these designs to make an accurate selection for their dissertation research studies. In this assignment, you will explore a potential research design for your dissertation. Engaging in this exploration neither finalizes nor approves your research design; final selection and approval of the research design will be done at a later date in conjunction with your dissertation committee.

General Requirements: 

Use the following information to ensure successful completion of the assignment:

• Refer to the potential research methodology you drafted as an assignment in a previous course.
• Retain this paper for reference in future courses.
• This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
• Doctoral learners are required to use APA style for their writing assignments. The APA Style Guide is located in the Student Success Center.
• Refer to the Publication Manual of the American Psychological Association for specific guidelines related to doctoral level writing. The Manual contains essential information on manuscript structure and content, clear and concise writing, and academic grammar and usage.
• This assignment requires that at least two additional scholarly research sources related to this topic, and at least one in-text citation from each source be included.
• You are required to submit this assignment to LopesWrite. Refer to the LopesWrite Technical Support articles for assistance.

Directions:

Write a paper (750- 1,000 words) in which you discuss a potential research design for your dissertation. Include the following in your submission:

1. A discussion of the GCU Core Design that you believe is most appropriate for your intended dissertation.
2. A research-supported rationale for the chosen design.
3. A research-supported discussion of why the other GCU Core Designs are not as appropriate as your chosen design given the intended dissertation research.

 Several Big Data Visualization tools have been evaluated in this weeks paper.  While the focus was primarily on R and Python with GUI tools, new tools are being introduced every day.  Compare and contrast the use of R vs Python and identify the pros and cons of each. Provide an example of both programming languages with coding examples as well as your experience in using one or both programming languages in professional or personal work. If you have no experience with either language, please discuss how you foresee using either/both of these languages in visualizing data when analyzing big data.  

Please make your initial post is substantive:

A substantive post will do at least two of the following:

• Ask an interesting, thoughtful question pertaining to the topic
• Answer a question (in detail) posted by another student or the instructor
• Provide extensive additional information on the topic
• Explain, define, or analyze the topic in detail
• Share an applicable personal experience
• Provide an outside source (for example, an article from the UC Library) that applies to the topic, along with additional information about the topic or the source (please cite properly in APA)
• Make an argument concerning the topic.

At least one scholarly source should be used in the initial discussion thread. Be sure to use information from your readings and other sources from the UC Library. Use proper citations and references in your post.

  Write a short essay on each of the following learning objectives. Type your answers immediately after each question:

1. How have social media sites such as Twitter changed communication?

2. What is cloud computing, and how is it changing business? 

3.  List and concisely describe at least six electronic communication channels used most commonly by businesspeople today. 

4. List and briefly describe the four parts of typical e-mails. 

5. Suggest at least ten pointers that you could give to a first-time e-mail user

6. How can you use instant messaging and texting safely on the job? 

7. Name at least five reasons some organizations forbid employees to use instant and text messaging.

8. How can you show professionalism and respect for your receivers in writing business IM messages and texts? 

9. How do organizations use podcasts, and how are they accessed?

10. What is a wiki, and what are its advantages to businesses? 

12. List the eight best practices for master bloggers.

13. How do businesses try to tap the vast potential of social networking? 

.14. Name a few of the potential risks that social networking sites may pose to business. 

15. What is really simple syndication (RSS), and why is it helpful? 

 

Using a Stack to Evaluate an Expression

We often deal with arithmetic expressions written in what is called infix notation:

         Operand1 op Operand2

We have rules to indicate which operations take precedence over others, and we often use parentheses to override those rules.

Example: Suppose we have this infix expression Q:

         5 * ( 6 + 2 ) – 12 / 4

We can use two stacks to evaluate the expression: a stack for operands, a stack for operators (and parenthesis). We can split the string into array of tokens.

1. While there are still tokens to be read in,

   1.1 Get the next token.

   1.2 If the token is:

       1.2.1 A number: push it onto the value stack.

       1.2.2 A variable: get its value, and push onto the value stack.

       1.2.3 A left parenthesis: push it onto the operator stack.You can also
choose to push the left parenthesis into the operand stack.

       1.2.4 A right parenthesis:

         1 While the thing on top of the operator stack is not a

           left parenthesis,

             1 Pop the operator from the operator stack.

             2 Pop the value stack twice, getting two operands.

             3 Apply the operator to the operands, in the correct order.

             4 Push the result onto the value stack.

         2 Pop the left parenthesis from the operator stack, and discard it.

       1.2.5 An operator (call it thisOp):

         1 While the operator stack is not empty, and the top thing on the

           operator stack has the same or greater precedence as thisOp,

           1 Pop the operator from the operator stack.

           2 Pop the value stack twice, getting two operands.

           3 Apply the operator to the operands, in the correct order.

           4 Push the result onto the value stack.

         2 Push thisOp onto the operator stack.

1. While the operator stack is not empty,

    1 Pop the operator from the operator stack.

    2 Pop the value stack twice, getting two operands.

    3 Apply the operator to the operands, in the correct order.

    4 Push the result onto the value stack.

1. At this point the operator stack should be empty, and the value

   stack should have only one value in it, which is the final result.

Note: Pay attention to negative operator and parenthesis.

Requirements:

1. Submit the repl.it link of the program

2. Copying code from others or from the Internet is considered as cheating and will result in 0 for the project

  

Case Study #3 – Inventory Management – Wagner Fabricating Company

Your answers to this case study will be due on Friday, 5 March 2021.

Managers at Wagner Fabricating Company are reviewing the economic feasibility of manufacturing a part that the company currently purchases from a supplier. Forecasted annual demand for the part is 3,200 units. Wagner operates 250 days a year.

Wagner’s financial analysis established a cost of Capital of 13% for the use of funds for investments within the company. In addition, over the past year $600,000 was the average investment in the company’s inventory. Accounting information shows that a total of $24,000 was spent on taxes and insurance related to the company’s inventory. In addition, an estimated $12,000 was lost due to inventory shrinkage, which included damaged goods as well as pilferage. A remaining $15,000 was spent on warehouse overhead, including utility expenses for heating and lighting.

An analysis of the purchasing operation shows that approximately two (2) hours are required to process and coordinate an order for the part regardless of the quantity ordered. Purchasing salaries average $28 per hour, including employee benefits. In addition, a detailed analysis of 125 orders showed that $2,375 was spent on telephone, paper, and postage directly related to the ordering process. 

A one-week lead time is required to obtain the part from the supplier. An analysis of demand during the lead time shows it is approximately normally distributed with a mean of 64 units and a standard deviation of 10 units. Service level guidelines indicate that one stock-out per year is acceptable.

Currently, the company has a contract to purchase the part from a supplier at a cost of $18 per unit. However, over the past few months, the company’s production capacity has been expanded. As a result, excess capacity is now available in certain production departments, and the company is considering the alternative of producing the parts itself. 

Forecasted utilization of equipment shows that production capacity will be available for the part being considered. The production capacity is available at the rate of 1,000 units per month, with up to five months of production time available. Management believes that with a two-week lead time, schedules can be arranged so that the part can be produced whenever needed. The demand during the two-week lead time is approximately normally distributed with a mean of 128 units and a standard deviation of 20 units. Production costs are expected to be $17 per part.

A concern of management is that setup costs will be significant. The total cost of labor and lost production time is estimated to be $50 per hour, and a full eight-hour shift will be needed to setup the equipment for producing the part.

Managerial Report

Develop a report for management of Wagner Fabricating that will address the question of whether the company should continue to purchase the part from the supplier or being to produce the part itself. Include the following factors in your report:

1. An analysis of the holding costs, including the appropriate annual holding cost rate

2. An analysis of ordering costs, including the appropriate cost per order from the supplier

3. An analysis of setup costs for the production operation

4. A development of the inventory policy for the following two(2) alternatives:

a. Ordering a fixed quantity Q from the supplier

b. Ordering a fixed quantity Q from in-plant production

5. Include the following in the policies of parts 4(a) and 4(b):

a. Optimal quantity Q*

b. Number of order or production runs per year

c. Cycle time

d. Reorder point

e. Amount of safety stock

f. Expected maximum inventory

g. Average inventory

h. Annual holding cost

i. Annual ordering cost

j. Annual cost of units purchased or manufactured

k. Total annual cost of the purchase policy and the total annual cost of the production policy

6. Make a recommendation as to whether the company should purchase or manufacture the part. What savings are associated with your recommendation as compared with the other alternative?