All posts by : chebby

In the final discussion posting please describe what components of cryptography impacted you the most.  Because of the short week, you will only create an initial posting.  There are no follow up postings for the week.

Please read attached document for instructions.

Please check the pdf attached.

APA format, in-text citation, references included

2 pages

1. What is your understanding of Entity Integrity Vs Referential Integrity in ERD model. Illustrated with simple examples for ease of understanding of the concepts.

2. Describe various types of keys in ERD model (Primary, Foreign, Superkey etc) with simple examples.

3. Describe 3 entities and illustrate different types of joins using these 3 entities assume you have three entities student, course & enrollment and these tables are related.

Case Summary: Champo Carpets is one of the largest carpet manufacturing companies based in India, with customers across the world, including some of the most reputed stores and catalog companies. Champo Carpets is based out of Bhadohi, Uttar Pradesh, which is one of the most famous clusters of carpet weaving in India. This cluster is spread over 1,000 sq. km and comprises many villages and districts in and around it. The company is a vertically integrated manufacturer and exporter of carpets and floor coverings, with more than 52 years of existence. At the beginning of 2020, the company employed 1,500 people with a capacity to produce 200,000 pieces of carpets and floor coverings per month. As part of sales and marketing, Champo Carpets shared sample designs with its potential customers, based on which the customer placed an order. The sample design selection was done in various ways and the process itself is costly and elaborate. To capture industry trends, a team of the company visited various trade shows and events and sent samples to the client as per the latest fiber and color trends. However, their sample-to-order conversion ratio was low compared to the industry average. This had cost repercussions as well as lost opportunities. The company identified the cause as inaccurate targeting of products to their customers. It subsequently implemented an enterprise resource planning (ERP) application and has been capturing data at every point of production as well as sales. They believe this accumulated data can help target their products accurately to the right clients and design an appropriate recommender system.

Learning Objectives The primary objective of the case is to illustrate how machine learning algorithms can be used to manage business-to-business (B2B) sales. The learning objectives include the following:

Access attached the full case or article. After a critical review of the case, respond to the questions below.

For a better understanding of the issues related to the problem, knowledge of data visualization using Tableau, R, or Python programming will be useful.
1. With the help of data visualization, provide key insights using exploratory data analysis.
2. What kind of analytics and machine learning algorithms can be used by Champo Carpets to solve their problems and in general, for value creation?
3. Develop ML models to help identify features that contribute toward conversion (or non-conversion) of samples sent to customers.
4. Discuss the data strategy for building customer segmentation using clustering. What are the benefits Champo Carpets can expect from clustering?
5. Discuss clustering algorithms that can be used for segmenting Champo Carpets’ customers.6. Develop customer segmentation using K-means clustering. Discuss the optimal number of clusters, significant variables, and cluster characteristics.
7. Discuss the data strategy that can be used for building recommender system models.
8. Develop an association rule mining algorithm, which can be used for recommendation.
9. Build collaborative filtering techniques for recommender systems.
10. What will be your final recommendations to Champo Carpets?

Requirements:

• Your analysis will be considered complete, if it addresses each of the 9 components and subcomponents outlined above.
• Use of proper APA formatting and citations. Supporting evidence from outside resources should be used and those must be properly cited. 
• Include your best critical thinking and analysis to arrive at your justification.
• Approach the assignment from the perspective of the senior executive leadership of the company.

  Answer all questions thoroughly. Min 7-8 pages without reference page and main header page.

Investigate product comparison information.
Locate a website that contains an article that presents a side-by-side comparison of 2 or more products. Evaluate the effectiveness of the product comparison by considering the questions listed below, and then write a 10 sentence paragraph of your findings.

– Which criteria are used to compare the products?
-What additional criteria could have been used?
-Describe the evaluation method used to do the product comparisons.
-Did the method(s) produce an objective or subjective result?
-Do you agree with the results? Why or why not?

Used referenced cites/where you could information from a valid website.

Part 1

Design, implement, test, and debug a program with a JFrame that allows the user to enter a series of contacts’ names, ages, e-mail addresses, and cell phone numbers, and creates a file from the entered data. Validate the age entry to ensure that it is numeric and between 0 and 120. Include information for three to five contacts.

Part 2

Design, implement, test, and debug a program that reads the file you created by the list in Part 1 and displays the records in a JFrame. You may either display all entries in the list at once or display them one at a time; the user interface is up to you. Protect against not being able to open the file.

Area and Circumference of a Circle 

Study the program below, which uses both variables and constants:

// ************************************************************

//  Circle.java

//

//  Print the area of a circle with two different radii

// ************************************************************

public class Circle

{

public static void main(String[] args)

{

final double PI = 3.14159;

int radius = 10;

double area = PI * radius * radius;

System.out.println(“The area of a circle with radius ” + radius +

” is ” + area);

radius = 2 0;

area = PI * radius * radius;

System.out.println(“The area of a circle with radius ” + radius +

” is ” + area);

}

}

Some things to notice:

  The first three lines inside main are declarations for PI, radius, and area. Note that the type for each is given in these

lines: final double for PI, since it is a floating point constant; int for radius, since it is an integer variable, and double for

area, since it will hold the product of the radius and PI, resulting in a floating point value.

  These first three lines also hold initializations for PI, radius, and area. These could have been done separately, but it is

often convenient to assign an initial value when a variable is declared.

  The next line is simply a print statement that shows the area for a circle of a given radius. 

  The next line is an assignment statement, giving variable radius the value 20. Note that this is not a declaration, so the int

that was in the previous radius line does not appear here. The same memory location that used to hold the value 10 now

holds the value 20—we are not setting up a new memory location.

  Similar for the next line—no double because area was already declared.

  The final print statement prints the newly computed area of the circle with the new radius. 

Save this program, which is in file Circle.java, into your directory and modify it as follows: 

1. The circumference of a circle is two times the product of Pi and the radius. Add statements to this program so that it

computes the circumference in addition to the area for both circles. You will need to do the following:

  Declare a new variable to store the circumference.

  Store the circumference in that variable each time you compute it.

  Add two additional print statements to print your results.

Be sure your results are clearly labeled. 

2. When the radius of a circle doubles, what happens to its circumference and area? Do they double as well? You can 

determine this by dividing the second area by the first area. Unfortunately, as it is now the program overwrites the first 

Chapter 2: Data and Expressions 

16

area with the second area (same for the circumference). You need to save the first area and circumference you compute

instead of overwriting them with the second set of computations. So you’ll need two area variables and two

circumference variables, which means they’ll have to have different names (e.g., area1 and area2). Remember that each

variable will have to be declared. Modify the program as follows:

  Change the names of the area and circumference variables so that they are different in the first and second

calculations. Be sure that you print out whatever you just computed.

  At the end of the program, compute the area change by dividing the second area by the first area. This gives you the

factor by which the area grew. Store this value in an appropriately named variable (which you will have to declare).

  Add a println statement to print the change in area that you just computed.

  Now repeat the last two steps for the circumference. 

Look at the results. Is this what you expected? 

3. In the program above, you showed what happened to the circumference and area of a circle when the radius went from

10 to 20. Does the same thing happen whenever the radius doubles, or were those answers just for those particular

values? To figure this out, you can write a program that reads in values for the radius from the user instead of having it

written into the program (“hardcoded”). Modify your program as follows:

  At the very top of the file, add the line 

import java.util.Scanner; 

This tells the compiler that you will be using methods from the Scanner class. In the main method create a Scanner

object called scan to read from System.in.

  Instead of initializing the radius in the declaration, just declare it without giving it a value. Now add two statements

to read in the radius from the user:

  A prompt, that is, a print statement that tells the user what they are supposed to do (e.g., “Please enter a value

for the radius.”);

  A read statement that actually reads in the value. Since we are assuming that the radius is an integer, this will

use the nextInt() method of the Scanner class.

  When the radius gets it second value, make it be twice the original value.

  Compile and run your program. Does your result from above hold? 

Chapter 2: Data and Expressions 

17

For each case answer the following questions

Question 1: What reason for this successful attack? What was the vulnerability (Flaw or weakness that allows a threat agent to bypass security)?

Question 2: Attack surfaces type?

Question 3: Who are the threat actors?

Question 4: What can be done to defend against this particular attack (So, it will not happen again)?

I need to write a term paper on the topic Siemens Simatic- PCS7/WINCC (SCADA)