Java Assignment

Exercise 24.3: (pg no.  971)

 (Implement a doubly linked list) The MyLinkedList class used in Listing 24.5 is

a one-way directional linked list that enables one-way traversal of the list. Modify

the Node class to add the new data field name previous to refer to the previous

node in the list, as follows:

public class Node<E> {

E element;

Node<E> next;

Node<E> previous;

public Node(E e) {

element = e;

}

}

Implement a new class named TwoWayLinkedList that uses a doubly linked list

to store elements. Define TwoWayLinkedList to implements MyList. You need

to implement all the methods defined in MyLinkedList as well as the methods

listIterator() and listIterator(int index). Both return an instance of

java.util.ListIterator<E> (see Figure 20.4). The former sets the cursor to

the head of the list and the latter to the element at the specified index.

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The GG Freightways (GGFRT) ITSP Part 2

 

The GG Freightways (GGFRT) ITSP Part 2 Assignment is due at the end of this week.  The assignment instructions are attached.

The Case Study is posted under Course Resources > Case Study.  Use the Case Study as the background to develop your assignment.  Also review feedback from the Part 1 assignment to incorporate into this assignment.

You can utilize the ITSP2 IT Roadmap Table Example file (attached) to copy/paste the table into your assignment, then modify the information.

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attribution theory and how it influences the implementation of innovation technologies

This week’s journal article focuses on attribution theory and how it influences the implementation of innovation technologies. Two types of employee attributions are noted in the article (intentionality and deceptive intentionality), please review these concepts and answer the following questions:

Provide a high-level overview/ summary of the case study

Note how constructive intentionality impacts innovation implementations

Find another article that adds to the overall findings of the case and note how attribution-based perspective enhances successful innovation implementations. Please be explicit and detailed in answering this question.

Be sure to use the UC Library for scholarly research. Google Scholar is also a great source for research. Please be sure that journal articles are peer-reviewed and are published within the last five years.

The paper should meet the following requirements:

3-5 pages in length (not including title page or references)

APA guidelines must be followed. The paper must include a cover page, an introduction, a body with fully developed content, and a conclusion.

A minimum of five peer-reviewed journal articles.

The writing should be clear and concise. Headings should be used to transition thoughts. Don’t forget that the grade also includes the quality of writing.

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Assignment Data Preprocessing – UFO Sighting Data Exploration

 I had attached the ufo_sightings_large.csv

  • In this assignment, you will investigate UFO data over the last century to gain some insight.
  • Please use all the techniques we have learned in the class to preprocesss/clean the datasetufo_sightings_large.csv
    .
  • After the dataset is preprocessed, please split the dataset into training sets and test sets
  • Fit KNN to the training sets.
  • Print the score of KNN on the test sets

 

1. Import dataset “ufo_sightings_large.csv” in pandas (5 points)

 

2. Checking column types & Converting Column types (10 points)

Take a look at the UFO dataset’s column types using the dtypes attribute. Please convert the column types to the proper types. For example, the date column, which can be transformed into the datetime type. That will make our feature engineering efforts easier later on.

 

3. Dropping missing data (10 points)

Let’s remove some of the rows where certain columns have missing values.

 

4. Extracting numbers from strings (10 points)

The length_of_time column in the UFO dataset is a text field that has the number of minutes within the string. Here, you’ll extract that number from that text field using regular expressions.

In [ ]:

​ 

5. Identifying features for standardization (10 points)

In this section, you’ll investigate the variance of columns in the UFO dataset to determine which features should be standardized. You can log normlize the high variance column.

 

6. Encoding categorical variables (20 points)

There are couple of columns in the UFO dataset that need to be encoded before they can be modeled through scikit-learn. You’ll do that transformation here, using both binary and one-hot encoding methods.

 

7. Text vectorization (10 points)

Let’s transform the desc column in the UFO dataset into tf/idf vectors, since there’s likely something we can learn from this field.

 

8. Selecting the ideal dataset (10 points)

Let’s get rid of some of the unnecessary features.

 

9. Split the X and y using train_test_split, setting stratify = y (5 points)

In [9]:

X = ufo.drop(["type"],axis = 1)
y = ufo["type"].astype(str)

 

10. Fit knn to the training sets and print the score of knn on the test sets (5 points)

In [1]:

from sklearn.neighbors import KNeighborsClassifier
knn = KNeighborsClassifier(n_neighbors=5)
# Fit knn to the training sets
knn.fit(train_X, train_y)
# Print the score of knn on the test sets
print(knn.score(test_X, test_y))

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Case Study 8- System Analysis

 

Instructions

  • Please refer to the original Willowbrook School Case Study and previous case study assignments as needed 
  • Read the additional background information below
  • Complete the tasks that follow
  • Submit ONE file (a document)

Additional Background

Willowbrook School has decided to proceed to the systems analysis phase, based on the findings and proposal you presented after the preliminary investigation. A summary of your fact-finding is as follows:

Fact-Finding Summary

Billing and payments for Willowbrook School have two components; tuition and after-care. Tuition is a fixed fee, set in the spring of the prior academic year. After-care fees have two components, a fixed fee based on the time-block of after-care the student is pre-registered for, and a variable fee based on any additional time that the student may have used on a “drop-in” basis. There are several different time blocks that students can be registered for in after-care, dependent on whether the child is in pre-school, kindergarten or primary school. For preschoolers, time blocks are noon – 1:30 p.m., noon – 3:30 p.m. and noon – 5:30 p.m. For kindergarten students, time blocks are 1:30 – 3:30 p.m. and 1:30 – 5:30 p.m. For primary school students the 3:30 – 5:30 time block is available. These time blocks are the time blocks available for drop-in after-care as well. In addition, for pre-registered students not registered for the entire afternoon, the 1:30 – 3:30 blocks and 3:30 – 5:30 blocks can be utilized on a drop-in basis.

There are two payment options for tuition and the fixed component of after-care. Parents can pay the entire amount by August 1 prior to the start of the school year; or the fixed fees can be spread out over a 10-month period, starting July 1 prior to the start of the school year. A discount of 5% is applied to fees for parents choosing the lump sum payment option. Parents who have more than one child enrolled at Willowbrook are eligible for a 5% discount on tuition for all enrolled children.

Payment for after-care used on a “drop-in” basis is billed monthly and is added to the bills for parents who are paying in 10 monthly installments. New bills are generated for “drop-in” care for those who paid fees in a lump sum.

Monthly bills for fees and “drop-in” care are due on the first of the month and are distributed to parents one week prior to their being due. Parents who have more than one child enrolled in Willowbrook receive a separate bill for each child. Willowbrook has not had a policy of charging interest on late payments, because it has not been a problem except in one or two cases per year. These cases are handled on a case-by-case basis. 

The billing is done using Microsoft Excel. Susan sets up a new workbook for each academic year. Each month Susan creates a new worksheet in the workbook. The worksheet maintained contains one line per student. Each line contains the following billing and payment information for the student:

  • Name of Student
  • Names of Parents
  • Amount of Discount on fixed fees
  • Monthly fixed tuition fee
  • Monthly fixed after-care fee
  • Discounted fixed fees
  • Monthly “drop-in” fees
  • Total Monthly fee (calculated field)
  • Payment received
  • Amount paid to date (calculated field)
  • Amount outstanding (calculated field) 

The entry for each student is updated twice each month, once to prepare the bills and once to record the payment. Entry for bill preparation requires the monthly statements from after-care detailing all “drop-in” hours for each student. Currently, the monthly statements include a listing for each child, detailing date(s) and time(s) of drop-in hours. From this listing, Susan Brown enters a total charge for additional after-care provided. 

A summary monthly report is generated for the finance committee from this spreadsheet summarizing fee collections for tuition and after-care. The finance committee also receives separate monthly reports detailing payroll expenses for all employees. Reports need to be ready for distribution at the finance committee meeting which is scheduled for the third Monday of every month.

In light of the plan to expand the system to handle less sensitive administrative tasks, and the fact that Susan Brown’s workstation is used by volunteers to assist in the production of newsletters and calendars for parents, you have been asked to ensure that the billing system be made secure somehow, so that volunteer workers cannot access financial information. Susan Brown has indicated that the most useful new feature that could be added to the system would be the ability to generate one bill per family per month, listing each student’s charges separately, and an overall total. Also useful would be the ability to automatically generate a receipt at the time payments are recorded. This receipt should contain the information required for reimbursement requests from different types of Dependent Care and tuition accounts, including Name, location, and Federal Tax ID number of the school. In addition, parents have asked for a separate statement accompanying their bill itemizing all drop-in after-care hours for that statement, including child’s name, date(s) and time(s) being billed for.

Tasks

Each task below is to be presented in report format and in the order, the tasks are given.

  1. Functional Decomposition Diagrams (FDD)
    1. Draw an FDD of the organization under investigation.
    2. Explain the FDD of the Willowbrook School.
  2. Data Flow Diagram (DFD)
    1. Draw a context diagram.
    2. Draw a level 0 data flow diagram.
    3. Take 1 major process illustrated in the level 0 diagram and draw a level 1 diagram of the major process.
    4. Explain the 3 diagrams of the Willowbrook School.

Grading Rubric Attached

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IT – Assignment: Research: Data Collection Techniques – 3 Pages APA

 

Background: As noted by Kirk (2016), working with data is one of the four stages of the visualization workflow.  According to Kirk (2016), “A dataset is a collection of data values upon which a visualization is based.” In this course, we will be using datasets that have already been collected for us. Data can be collected by various collection techniques.

Reference: Kirk, Andy. Data Visualisation: A Handbook for Data Driven Design (p. 50). SAGE Publications.

Assignment: Summarize 3 data collection techniques (Interviews, Surveys, Observations, Focus Groups, etc.). Compare and contrast the 3 data collection techniques you selected. Lastly, what collection techniques do you prefer and why?

Your research paper should be at least 3 pages (800 words), double-spaced, have at least 4 APA references, and typed in an easy-to-read font in MS Word (other word processors are fine to use but save it in MS Word format). Your cover page should contain the following: Title, Student’s name, University’s name, Course name, Course number, Professor’s name, and Date.

Note: Text Book is attached. Please refer it.

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Datatronics Case Study

1. Outline the specific information that Matt should collect to build a case for improving customer service at Datatronics.

 2. Describe your top ideas for Matt to present to Joel next week. 

3. How would Matt get Joel to support his ideas?

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Find the Roots of a Quadratic Equation

   

Please fulfill all requirements in the file
I don't want a match with students or resources

Find the Roots of a Quadratic Equation.

The standard form of a quadratic equation is:

ax2 + bx + c = 0, where

a, b and c are real numbers and

a != 0

The term b2-4ac is known as the discriminant of a quadratic equation. It tells the nature of the roots.

1. If the discriminant is greater than 0, the roots are real and different.

                       

2. If the discriminant is equal to 0, the roots are real and equal.

     

3. If the discriminant is less than 0, the equation has no real root.

I. Project Phase 1 questions:  

In the first phase of this project, you are requested to 

1. Write an algorithm for a quadratic equation solver.

2. Implement the class Main with the main method. Declare the variables and compute the discriminant.

3. After computing the discriminant value, insert the following code after completing the missing instructions. Don’t forget to add comments.

if (discriminant > 0) {

}

else if (discriminant == 0) {

}

else {

}

Example: 

If a, b, and c are set to 3, 1 and 2 respectively, the equation has no real root.

II. Marking Criteria

   

Criteria 

Marks 

 

The program is bugs-free

/5

 

The source code is well documented (commented)   and program uses standard Java naming conventions

/5

 

Question 1 

/10

 

Question 2

/10

 

Question 3

/10

 

Output screenshots provided in the report

/10

 

Total

/50

 

Final Grade

/5

Answer

1.  Brief description

Provide a brief description of your program in this section.

2. Algorithm

Provide the algorithm for the quadratic equation solver

3. Program code

Put the code of your program in this section. Do not forget to document (comment) your code.

4.  Screenshots 

Put the different screenshots with a brief description in this section. 

5. Difficulties Faced

Provide a brief description of difficulties and challenges faced during this phase of the project.

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Apply the process of systems thinking

 

Generate a report that analyzes the current systems in place at Lost Pines Outfitters and recommends changes to these systems/processes in line with client requests. This report should include initial recommendations for process and technology improvements focused on enhancing the client’s systems. Additionally, the report should contain a visualization modeling the recommended system for the client.

Your report should be 900–1,250 words and contain at least one system visualization created using Microsoft Visio.

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20 SQL Questions for Running Case Study City Jail

Hello all, I need 20 SQL questions along with the code to answer the question. An example would be:

“List all criminals with the zipcode: 23320.”

SELECT criminal_ID, last, zip

FROM criminals

WHERE zip = 23320;

To help with the question design I have attached the case study’s ER diagram.

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