1. Let A be an m x n matrix. Prove that Ax = b has at least one solution for any b if and only if A has linearly independent rows.

2. Let V be a vector space with dimension 3, and let V = span(u, v, w). Prove that u, v, w are linearly independent (in other words, you are being asked to show that u, v, w form a basis for V)

I need a Java application with a GUI that includes the following requirements:

• Three classes minimum
• At least one class must use inheritance
• At least one class must be abstract
• Utilization of “get set” method. (get; set; =  is related to how variables are passed between different classes. The get method is used to obtain or retrieve a particular variable value from a class. A set value is used to store the variables. The whole point of the get and set is to retrieve and store the data values accordingly). See below for example of the get set method. V V V V V V V V V V V V V V V
• toString method
• polymorphism
• JavaFX front end – as you will see, JavaFX will allow you to create a GUI user interface.
• The User Interface must respond to events.
• If the application requires a data backend, you can choose to use a database or to use text files. I would prefer text files.
• Error handling - The application should be able to handle invalid data.

I was thinking of something with an ordering system for a restaurant, or something with a school, students, instructors, ID’s, grades, and GPA’s.  

The deliverables needed will be the code and GUI, along with a UML that shows the classes.

Example of get; set; method.

{
abstract class Photo
{
public double Height { get; set; }
public double Width { get; set; }

public double Price { get; set; }

public abstract void DisplayPhotoInfo();

}
}

Find a company that has referenced non-GAAP earnings in its annual report or quarterly report, the report should be published in 2016 or 2017.

Please include the report as an attachment（can be a link. http://www.alibabagroup.com/en/news/press_pdf/p170518.pdf

1. please identify your company, Name the company and briefly explain the company’s justification for using them.

2.What measures (for example, EBIT) and what adjustments were made to GAAP earnings to get to non-GAAP earnings.

3.Are the adjustments income increasing?

4.Do you think the non-GAAP adjusted earnings were more transparent and useful to investors? Why or why not – use specifics

1. Match the Following:

   -A.B.C.D.E.F.G.H.I.J. Bias -A.B.C.D.E.F.G.H.I.J. Double Blind -A.B.C.D.E.F.G.H.I.J. Clinical Trial -A.B.C.D.E.F.G.H.I.J. Cohort -A.B.C.D.E.F.G.H.I.J. Confounding -A.B.C.D.E.F.G.H.I.J. Cross-sectional -A.B.C.D.E.F.G.H.I.J. Disease Incidence -A.B.C.D.E.F.G.H.I.J. Intention to treat -A.B.C.D.E.F.G.H.I.J. Matching -A.B.C.D.E.F.G.H.I.J. Per protocol

   A. Risk factor distortion B. Systematic uncertainty C. Number of new case of disease over time D. Creating similar comparison groups E. Subject randomly assigned to treatment groups F. Subject and researcher unaware of treatment status G. At a single point in time H. Followed all treatment/study procedures I. Do not have to complete treatment J. Subjects with common characteristics followed over time

For each question below (2- 12), describe one feasible, ethical approach to exploring the relationship
using a case-control study, a cohort study, or a randomized trial. Be specific about the study population,
the primary research question, how you would allocate patients to cases/cohorts/treatments, and what outcomes you would observe.

1. Whether a new cholesterol drug is better than the current standard statin prescribed to lower
cholesterol
2. The relationship between high-stress jobs and death from heart disease
3. The effect of nutritional deficiencies due to poverty on brain development in children
4. The relationship between a new caffeine alternative and alertness (compared to caffeine)

Investigators interested in the association between serum vitamin D levels and various birth outcomes recruited pregnant mothers to have a blood draw during the second trimester of their pregnancy. Mothers were followed until they gave birth. The health outcomes were compared among mothers with low, adequate, and high vitamin D levels.

A) Describe the study as to its particular sampling method.

B) Describe a risk measurement that you think would be most appropriate to compare the groups, and justify your choice.

Choose the most appropriate option

Detail, with very specific examples of each item, the meaning of the following concepts related to statistical data gathering: Be sure that the concept is first defined, IN YOUR OWN WORDS, and that you use a concrete example (including visual examples) to illustrate your understanding of the statistical concept: Treatment Group; Control Group; Summary Statistic; Numerical Variable; Discrete Variable; Continuous Variable; Ordinal Variable; Nominal Variable; Dependent Variable; Independent Variable; Population; Sample; Simple Random Sample; Stratified Sample;Representative Sample; Convenience Sample; Observational Study; Cohort; Placebo; Prospective Study; Retrospective Study; Cluster; Control Group; Mean; Median; Mode; Histogram; Outlier; Pie Chart;

The Critic In a 400-600 word answer, properly cited with an APA-formatted reference list and in-text citations, please answer the following questions. In addition to the researched facts you present as your answer, you may provide opinions and real-world experiences where appropriate. Find an article about handwashing in an online health magazine or website such as Prevention, Men’s Health, or WebMD. The site should be mainstream and reputable. Examples of topics include how to properly wash your hands, the use of hand sanitizers, or any disease transmission topic that can be prevented or reduced by proper handwashing. Choose an article that includes a quote from a health professional or references a medical research study. Include the link in your submission. Summarize the article. What specific information did the author’s source provide regarding the topic? What information or opinion has the author provided on their own and what have they concluded from the study or source? Critique the article. Did the author correctly interpret the research? Did it sound like the author understood what the medical professional was trying to say and did they add background details or analysis appropriate to the subject? Was anything missing? Explain what you would change or add to the article to make it more accurate or informative. Resources to get you started When & How to Wash Your Hands http://www.cdc.gov/handwashing/when-how-handwashing.html Centers for Disease Control and Prevention, 2015 Hand-washing: Do's and don'ts http://www.mayoclinic.org/healthy-lifestyle/adult-health/in-depth/hand-washing/art-20046253

Challenge: Documents

Description: Create a class in Python 3 named Document that has specified attributes and methods for holding the information for a document and write a program to test the class.

Purpose: The purpose of this challenge is to provide experience creating a class and working with OO concepts in Python 3.

Requirements:

Write a class in Python 3 named Document that has the following attributes and methods and is saved in the file Document.py.

Attributes

__title is a hidden attribute used to hold the document's title (which is a string).

__body is a hidden attribute used to hold the text of the document (which is a string).

__author is a hidden attribute used to indicate the document's author (which is a string).

Methods

__init__ is to define the three attributes above and assign their default values.

get_title should return the value of the __title field.

get_body should return the value of the __body field.

get_author should return the value of the __author field.

Document Generator Program

Once you have created the Document class, create another Python file called documentGenerator.py. This program is to use Document.py as a module.

In documentGenerator.py, prompt the user to enter the title, body, and author for a document. Create a new Documentobject instance to store this data. Then, ask the user if they would like to repeat the process. They should be able to create as many Document object instances as they would like.

After the user is done creating documents, the program is to use the object’s accessor methods (get_title, get_body, and get_author) to retrieve the title, body, and author of each document. This information is to be displayed in a nicely formatted way.

THANK YOU! (:

Answer each one, with (brief) justification. Throughout, V denotes a vector space, and bold-face letters like u, v, etc denote vectors in V.

A1. Suppose there are three linearly independent vectors in V. Is V necessarily finite-dimensional?

A2. Suppose there are three vectors in V that span V. Is V necessarily finite-dimensional?

A3. What is the dimension of the vector space of all polynomials of degree 4 or less?

A4. Can an infinite-dimensional vector space contain a finite-dimensional subspace?

A5, In a finite-dimensional vector space, is every spanning set necessarily finite?

A6. Can R³ contain a four-dimensional subspace?