Data modeling is a key component to creating a database. There are all different aspects of data modeling, with concerns from various things to the methodology of modeling, to software, to interfaces used between each model.

Paper: Write a 3 page paper (at model 1.2 spacing, 12 pt font, 1 inch margins with at most one half of the paper including a figure, citations not included) on some aspect of data modeling in industry. You must use reliable academic and industry resources. You must have at least one resource that connects your topic to industry. Write up should not exceed 4 pages, excluding citations. Example topics include:

• Data modeling challenges in transportation industry (logistics)
• Data modelling notations or techniques other than the ER or relational model (Bachman diagrams, Barker's notation, Chen's notation, Data Vault Modeling, Extended Backus–Naur form, IDEF1X, Object-relational mapping, Object-Role Modeling, Relational Model, Relational Model/Tasmania)
• Data modelling case study for a specific company.
• Suggestions for other topics from students will also be taken.

We consider a randomized experiment, the Tennessee STAR experiment, where students and teachers are randomly assigned to either a small class (15 students) and a regular class (24 students).

We want to estimate the effect of smaller class in primary school and use the following linear model:
Score = β0 + β1ClassSize + Controls + u,
where Score is student’s academic score, Class Size is dummy for small class, and controls includes free lunch status, race, gender, teacher characteristics and so on.

However, you estimate the following model instead:
Score = α0 + α1ClassSize + v

A. Provide the conditions for the OLS estimator for α1 to be unbiased.
B. Provide the Gauss-Markov assumptions for the OLS estimator for α1.
C. Evaluate the sign and the magnitude of bias α1 if teacher’s experience has positive effect on score and more experienced teachers are more likely to be assigned to regular class.
D. Suppose that teachers and students are randomly assigned to either a small class (15 students) or a regular class. Compare α1 to β1.
E. How does the OLS estimator for β1 change as we additionally include parental characteristics as Controls?

When it comes to Bodies & Sexualities, the common denominator globally: Keep people unhappy with how they look = get their money = maintain social control Discuss Aleichia William’s statement, “I’m learning to embrace every aspect of my identity and not let small minds put me in a box that just doesn’t fit.” Post#1: Discussion Post ( 3 Points) In what institutionalized ways does our society force people into these boxes? (300 words): (1 point) Have you ever experienced having to identify within a box that didn’t fit? How did you handle it? What can we do to shift our thinking to a less rigid and separate way of thinking about identity? Think about what communities you are a part of. (300 words): (1 point) Are they supportive or oppressive? In what ways? How did you find them? C. How are your interactions with other members of the community different from interactions with people outside the community? (300 words): (1 point) (Support each answer with course material and/or other academic sources and provide citations)

Apply Jean Piaget’s preoperational stage theory (symbolic thought, pretend play, and egocentrism) to early childhood development. Give an example for each.

Explain why children during early childhood are unable to understand law of conservation.

Apply Vygotsky’s concepts of scaffolding and zone of proximal development to early childhood cognitive development.  Apply by using an example.

Explain how the impact poverty has on academic experiences and IQ.

Describe the effects of television on learning. How much television will you allow your children to watch?

Provide examples of the appearance-reality distinction.

What are scripts?  Explain.

Explain autobiographical memory (episodic memory).

Summarize the factors that influence memory.

Identify different memory strategies used by preschoolers.

Describe the process of how words are learned by preschoolers.

Explain whole-object assumption.

Explain contrast assumption.

Describe the process of how preschoolers learn grammar.

What is overregularization?

Why questions containing “what,” “who,” and “where” appear earlier than questions of “why,” “when,” “which,” and “how”?

Explain the role of pragmatics in language development.

Describe the importance of Vygotsky’s concept of inner speech.

The internal as well as external environment of organisations, including public sector organisations, have become very dynamic. Over the last decades many unpredictable events happened which had dramatic impacts on many countries. The public sector needs a new breed of leaders who can address the new challenges in this ever changing world. Lately, the Covid-19, the corona virus disease, is having a devastating effect in many countries, including Mauritius. At the beginning of March 2020, the Prime Minister announced a series of measures to reduce the socio-economic impact of Covid-19 for Mauritius (GIS, 2020). He announced that overall Government spending will be reduced by 10%. In this volatile and unpredictable environment, public administrators have a critical role to play to save a country in the medium to long term. Strong and effective leadership have become imperative in the public sector in Mauritius.

Carry out the following tasks:

Research academic and Journal articles on Leadership in the public sector. Prepare a brief literature review of the topic. This should include some relevant theories on Leadership. Your research should mainly be based on recent articles from peerreviewed journals. [12 Marks]

Evaluating Source

One of the responsibilities often associated with management is the gathering of career-specific information on resources or professional development. Familiarity with professional sources shows you have interest in your field and invest time to stay current with developments and debates in your industry. Sources for the IT field.

For this assignment, you will identify credible sources related to your field. You will identify the sources using accurate APA format. Then, for each source, you will write two complete paragraphs that

1. Summarize the source;
2. Comment on the source’s benefits and currency.

For your sources, you should include at least one of each of the three following sources:

1. An academic or professional source from the Keiser e-library database. Avoid single articles, too. Try to identify a database or a journal relevant to your field.
2. A professional news in your field or a respected commercial site like The New York Times, The Wall Street Journal. An online magazine such as Forbes or Fortune might be appropriate, depending on your field.
3. An organizational site such as .org, .edu, and .gov site. Examples could include American Medical Association, the National Criminal Justice Association, the American Dairymen's Association, and so forth.

A statistics instructor is interested in examining the relationship between students’ level of statistics anxiety and their academic self-efficacy and statistics performance. A class of N = 10 students was asked to respond to a self-efficacy scale and an anxiety scale. Each student’s average statistics exam score was also recorded.

The results are as follows:

a. Explain what is meant by a correlation coefficient using one of the correlations as an example.

b. Study the table and comment on the patterns of results in terms of which variables are relatively strongly correlated and which are not very strongly correlated.

c. Comment on the limitations of making conclusions about direction of causality based on these data. In other words, discuss the issue of making cause-effect statements using correlations.

Bill and Alice Savage, husband and wife and both age 42, have the following transactions during 2016:

a. They sold their old residence on January 28, 2016, for $380,000. The basis of their old residence, purchased in 2006, was $70,000. The selling expenses were $20,000. On May 17, 2016, they purchased and moved into another residence costing $150,000.

b. On April 28, 2016, they sold for $8,000 stock that Alice had received as a gift from her mother, who had purchased the stock for $10,000 in 2011. Her mother gave Alice the stock on November 15, 2015, when the fair market value was $9,400.

c. On May 24, 2016, Bill sold for $21,000 stock inherited from his father. His father died on June 14, 2015, when the fair market value of the stock was $9,000. Bill's father paid $7,000 for the stock in 2009.

d. On August 11, 2016, they sold a personal automobile for $8,000; basis of the automobile was $20,000 and it was purchased in 2013.

e. They had a carryover and other stock transactions as follows:

Bill had a salary of $40,000 and Alice had a salary of $28,000. They have no children. They paid state income taxes of $3,200, sales tax of $400, federal income taxes of $15,000, and property taxes of $1,800. In addition, they contributed $5,600 to their church and paid $4,000 interest on their home mortgage.

Compute bill and Alice's taxable income for 2016.

Which of the following is not allowed as an itemized deduction?

Gambling losses to the extent of gambling winnings

A subscription to the Wall Street Journal to help with personal investment decisions.

All are allowed as itemized deductions.

Interest expense on a $800,000 loan incurred in 2016 to buy a principal residence

Cash donation to a church

Fred and Lucy are married, ages 33 and 32, and together have AGI of $120,000 in 2019. They have four dependents and file a joint return. They pay $5,000 for a high deductible health insurance policy and contribute $2,600 to a qualified Health Savings Account.

During the year, they paid the following amounts for medical care: $9,200 in doctor and dentist bills and hospital expenses, and $3,000 for prescribed medicine and drugs. In October 2019, they received an insurance reimbursement of $4,400 for the hospitalization. They expect to receive an additional reimbursement of $1,000 in January 2020.

Determine the maximum itemized deduction allowable for medical expenses in 2019.

Use 7.5% of AGI not 10% for 2019.

$12,800

$0

$800

$3,800

$9,200

Brad, who would otherwise qualify as Faye’s dependent, had gross income of $9,000 during the year. Faye, who had

AGI of $120,000, paid the following medical expenses this year:

Cataract operation for Brad $ 5,400

Brad’s prescribed contact lenses 1,800

Faye’s doctor and dentist bills 12,600

Prescribed drugs for Faye 2,550

Total $22,350

Faye has a medical expense deduction of:

use 7.5% of AGI again....

$13,350

$10,350

$3,150

$4,940