A real-world situation that demonstrates using an AWS Database solution is the Case Study of NASDAQ OMX.
The NASDAQ OMX Group is an American multinational financial services company, and it is recognized as the second-largest stock exchange operator worldwide. It provides trading, exchange technology, and market listing services.Amazon Web Services (AWS) has been the cloud computing platform for NASDAQ OMX. AWS was chosen because it offers an extensive range of highly scalable and reliable cloud infrastructure services.
NASDAQ OMX selected AWS as it offered a powerful infrastructure that met their critical performance, security, and regulatory requirements.NASDAQ OMX’s databases needed to be highly available and high-performing. Amazon Relational Database Service (Amazon RDS) was used because it enabled NASDAQ OMX to run a high-performance relational database in the cloud and was a fully managed service.
AWS provides exceptional scalability and reliability to our cloud infrastructure. We can be sure that we have all the resources we need at the right time and at the right place to serve our customers. In conclusion, AWS has provided NASDAQ OMX with the necessary solutions for a reliable, efficient, and secure IT infrastructure. Amazon RDS was the main answer chosen by NASDAQ OMX to provide the best possible outcome for their needs. As Anthony Candaele, Principal Technical Account Manager, AWS Enterprise Support, stated, “With the reliability, scalability, and security of AWS, NASDAQ OMX can focus on providing the highest level of services to its customers and partners around the world.”
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Create the following program called payroll.cpp. Note that the file you read must be created before you run this program. The output file will be created automatically by the program. You can save the input file in the same directory as your payroll.cpp file by using Project -> Add New Item, Text File. // File: Payroll.cpp // Purpose: Read data from a file and write out a payroll // Programmer: (your name and section) #include // for the definition of EXIT_FAILURE #include // required for external file streams #include // required for cin cout using namespace std; int main () { ifstream ins; // associates ins as an input stream ofstream outs; // associates outs as an output stream int id; // id for employee double hours, rate; // hours and rate worked double pay; // pay calculated double total_pay; // grand total of pay // Open input and output file, exit on any error ins.open ("em_in.txt"); // ins connects to file "em_in.txt" if (ins.fail ()) { cout << "*** ERROR: Cannot open input file. " << endl; getchar(); // hold the screen return EXIT_FAILURE; } // end if outs.open ("em_out.txt"); // outs connects to file "em_out.txt" if (outs.fail ()) { cout << "*** ERROR: Cannot open output file." << endl; getchar(); return EXIT_FAILURE; } // end if // Set total_pay to 0 total_pay = 0; ins >> id; // get first id from file // Do the payroll while the id number is not the sentinel value while (id != 0) { ins >> hours >> rate; pay = hours * rate; total_pay += pay; outs << "For employee " << id << endl; outs << "The pay is " << pay << " for " << hours << " hours worked at " << rate << " rate of pay" << endl << endl; ins >> id; } // end while // Display a message on the screen cout << "Employee processing finished" << endl; cout << "Grand total paid out is " << total_pay << endl; ins.close(); // close input file stream outs.close(); // close output file stream return 0; } Create the input file: Inside C++ go to Project -> Add New Item and then Text to create a text file. Type in the data below In the same directory as your .cpp file for Payroll.cpp click Files and Save As em_in.txt 1234 35 10.5 3456 40 20.5 0 Add to your Word File • the output file • the input file • the screen output • the source program
Payroll Program using C++ is an effective and efficient way of calculating salaries of employees. The program reads data from a file and writes out payroll. Below is the program that reads data from em_in.txt and writes to em_out.txt:
// File: Payroll.cpp
// Purpose: Read data from a file and write out a payroll
// Programmer: Jane Smith
#include
#include
using namespace std;
int main()
{
ifstream ins; // associates ins as an input stream
ofstream outs; // associates outs as an output stream
int id; // id for employee
double hours, rate; // hours and rate worked
double pay; // pay calculated
double total_pay; // grand total of pay
// Open input and output file, exit on any error
ins.open("em_in.txt"); // ins connects to file "em_in.txt"
if (ins.fail())
{
cout << "*** ERROR: Cannot open input file. " << endl;
getchar(); // hold the screen
return EXIT_FAILURE;
}
outs.open("em_out.txt"); // outs connects to file "em_out.txt"
if (outs.fail())
{
cout << "*** ERROR: Cannot open output file." << endl;
getchar();
return EXIT_FAILURE;
}
// Set total_pay to 0
total_pay = 0;
ins >> id; // get first id from file
// Do the payroll while the id number is not the sentinel value
while (id != 0)
{
ins >> hours >> rate;
pay = hours * rate;
total_pay += pay;
outs << "For employee " << id << endl;
outs << "The pay is " << pay << " for " << hours << " hours worked at " << rate << " rate of pay" << endl << endl;
ins >> id;
}
// Display a message on the screen
cout << "Employee processing finished" << endl;
cout << "Grand total paid out is " << total_pay << endl;
ins.close(); // close input file stream
outs.close(); // close output file stream
return 0;
}
The Input File is saved in the same directory as the .cpp file for Payroll.cpp. It is saved as em_in.txt. Below is the Input File:```
1234 35 10.5
3456 40 20.5
0
The output file generated by the program is saved in the same directory as the Payroll.cpp file. It is saved as em_out.txt. Below is the Output File:```
For employee 1234
The pay is 367.5 for 35 hours worked at 10.5 rate of pay
For employee 3456
The pay is 820 for 40 hours worked at 20.5 rate of pay
Employee processing finished
Grand total paid out is 1187.5
Therefore, the source program, the input file, output file, and screen output are important components of the Payroll Program.
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whoch cisco ios command can be used to display a list of basic ip information with a single line per interface
The "show ip interface brief" command can be used to display a list of basic IP information with a single line per interface.
The "show ip interface brief" command is a Cisco IOS command that provides a concise summary of basic IP information for all interfaces on a Cisco device. When this command is executed, it generates a single-line output for each interface, making it easy to quickly view essential IP-related details.
The output of the command typically includes information such as the interface name, IP address, status (up or down), protocol (up or down), and additional information related to the interface's operational state. The single-line format ensures that the information is presented in a concise and easily readable manner, allowing network administrators to quickly identify and analyze IP-related data for each interface.
By using the "show ip interface brief" command, network administrators can obtain an overview of the IP configuration across all interfaces in a convenient and efficient manner, making it a valuable tool for troubleshooting, monitoring, and managing Cisco devices.
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Lab: Your task in this lab is to change the group ownership of the /hr/personnel file from hr to mgmt1.
Use the ls -l command to verify the ownership changes.
(Type the commands)
This indicates that the group ownership of the /hr/personnel file has been changed from hr to mgmt1.
In order to change the group ownership of the /hr/personnel file from hr to mgmt1, you need to use the following command:chgrp mgmt1 /hr/personnelAfter you run the above command, the ownership of /hr/personnel file will be changed to the group mgmt1. You can verify this change by using the ls -l command. Here are the steps:1. Open your terminal or command prompt.2. Type the command: `chgrp mgmt1 /hr/personnel`3. Press enter to run the command.4. Verify the ownership changes by running the ls -l command, which will display the file with its new group owner.5. The final output should look something like this:-rw-rw-r-- 1 owner mgmt1 1024 Feb 4 10:30 /hr/personnel\
This indicates that the group ownership of the /hr/personnel file has been changed from hr to mgmt1.
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_Answer the following questions by explaining the needed steps for the calculations.
Convert the Binary Number 1110102 to Decimal Number
Convert the Hexadecimal Number 1DA16 to Decimal Number
compute 1110102 + 10102
compute 1012 * 102
2_Compare between Bitmap and Object Images, based on:
What are they made up of?
What kind of software is used?
What are their requirements?
What happened when they are resized?
3_Specify at least four differences between Peer-to-Peer and Client/Server computing. List two examples for each.
What are they made up of?Bitmap images are made up of small squares, called pixels, that are combined to form an image.
Bitmap images are created and edited using pixel-based software, such as Adobe Photoshop. Object images are created and edited using vector-based software, such as Adobe Illustrator.c) What are their requirements?
Bitmap images require a large amount of memory to store and edit, but they can be scaled up or down without losing quality .Object images require less memory to store and edit, but they can be scaled up or down without losing quality.
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Special consideration needs to be made for the selection of the product category. Allow the user to make a selection between the following categories: - Desktop Computer. - Laptop. - Tablet. - Printer. - Gaming Console.
The jave program for the special consideration needs to be made for the selection of the product category is given below
What is the code for the Special consideration?Java
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int ch = -1;
while (ch != 6) {
System.out.println("1. Desktop Computer.");
System.out.println("2. Laptop.");
System.out.println("3. Tablet.");
System.out.println("4. Printer.");
System.out.println("5. Gaming Console.");
System.out.println("6. Exit.");
System.out.print("Select the product category: ");
ch = in.nextInt();
in.nextLine();
if (ch == 1) {
System.out.println("You have selected Desktop Computer.");
} else if (ch == 2) {
System.out.println("You have selected Laptop.");
} else if (ch == 3) {
System.out.println("You have selected Tablet.");
} else if (ch == 4) {
System.out.println("You have selected Printer.");
} else if (ch == 5) {
System.out.println("You have selected Gaming Console.");
} else if (ch == 6) {
} else {
System.out.println("Wrong selection.");
}
}
in.close();
}
}
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Special consideration needs to be made for the selection of the product category. Allow the user to make a selection between the following categories: • Desktop Computer. • Laptop. • Tablet. • Printer. • Gaming Console. Q.1.5 If the user makes an incorrect product category selection, prompt the user to re-enter a valid product category. Q.1.6 Provide the user with the option to select between the following product warranty options: • 1 – Applies a six-month product warranty. • Any other key applies a two-year warranty. Q.1.7 Once the entire submission has been completed, the user must be informed that the product details have been successfully saved
aubrey, an employee in the marketing department, has told you that when she prints to her laser printer, faint ghost-like images are being printed on her new page.as an it administrator, you check with other employees who use the same printer and find that they are not experiencing the same problem.which of the following would be the best fix for this issue?
The best fix for the issue of faint ghost-like images being printed on a new page from a laser printer would be to replace the toner cartridge.
Why would replacing the toner cartridge be the best fix for the issue?The problem described by Aubrey suggests that there is a defect or inconsistency with the toner cartridge specifically used by Aubrey.
Since other employees using the same printer are not experiencing the same issue, it indicates that the problem is not with the printer itself but rather with the cartridge being used.
Ghost-like images are often caused by residual toner not being properly cleared from the drum, which can be resolved by replacing the cartridge. By replacing the toner cartridge, Aubrey should be able to print without any ghost-like images.
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FILL IN THE BLANK. in programming terms, ___ are a series of words or other items of data contained in a string that are separated by spaces, commas, or other characters. question 89 options: tokens key values lexicons delimiters
Tokens are a series of words or other items of data contained in a string that are separated by spaces, commas, or other characters.
In programming terms, tokens are individual units of meaningful information within a larger body of code or text. They can be words, numbers, symbols, or any other distinct elements that carry significance in the programming language or context. Tokens are separated from each other by specific characters called delimiters, which can be spaces, commas, semicolons, or any other designated characters.
Tokens play a crucial role in programming languages as they serve as the building blocks for writing and interpreting code. During the process of lexical analysis, a compiler or interpreter breaks down the source code into tokens to analyze its structure and meaning. This involves identifying keywords, variables, operators, and other language-specific elements that make up the program. By dividing the code into tokens, the programming language processor can understand the syntax and semantics of the program.
Tokens can also be found in other areas of programming, such as parsing data in a specific format like CSV (comma-separated values) or JSON (JavaScript Object Notation). In these cases, the tokens are the individual pieces of data separated by the designated delimiters, allowing the program to extract and manipulate the information as needed.
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battleships.c: In function 'get_coordinates': battleships.c:51:26: warning: passing argument 2 of 'sscanf' from incompatible pointer type [-wincompatible-pointer-types] \{if (sscanf("\%d\%d", y,&X)I=2)
The error message shown, "warning: passing argument 2 of 'scanf' from incompatible pointer type" is related to a type mismatch.
The function 'sscanf' expects the second parameter to be a pointer of type char *but the pointer passed is of type int *this produces a warning. This error often occurs when the correct type specifier is not given for the parameter of the scanf function that is being used.
How to resolve the error?To solve the error, we need to change the scanf statement to the correct format, which should have the variable names in their correct order as well as the correct types:scanf("format_specifier", &list_of_variables);
So, for the given warning error in battleships.
c: In function 'get_coordinates': battleships.c:
51:26, the correct format should be sscanf("%d%d", &y, &x);
Here, y and x are the two integer-type variables.
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which of the following range from conference calls to real-time collaboration systems and telepresence systems that aid in bringing together workers who are dispersed geographically?
The following range from conference calls to real-time collaboration systems and telepresence systems that aid in bringing together workers who are dispersed geographically are known as remote collaboration tools. These tools are essential in today's work environment, where more and more businesses are opting for a remote workforce.
Remote collaboration tools are programs that enable people to work together from different locations via the internet.
These tools assist in bringing together employees who are dispersed geographically, allowing them to share information and interact with each other as if they were in the same office.
Remote collaboration tools include the following:
Video conferencing softwareScreen sharing toolsProject management softwareOnline chat softwareCloud storage and file-sharing applicationsEmail and scheduling applicationsIntranetsWikis and blogsTelepresence systemsAudio conferencing toolsWhiteboardsIn summary, remote collaboration tools include video conferencing software, project management software, cloud storage and file-sharing applications, screen sharing tools, email and scheduling applications, telepresence systems, wikis and blogs, audio conferencing tools, online chat software, whiteboards, and intranets.
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A system operating with a low superheat and a low subcooling most likely has:
An over feeding refrigerant metering device
A system operating with a low superheat and a low subcooling most likely has an overfeeding refrigerant metering device.
This is the main answer. Here's an A refrigeration system that is operating with a low superheat and a low subcooling likely has an overfeeding refrigerant metering device. This is because an overfeeding refrigerant metering device is responsible for the additional refrigerant that is delivered to the evaporator.
Therefore, the term to complete the answer is "overfeeding refrigerant metering device." It is important to note that the superheat and subcooling are related to the refrigerant charge, as well as the metering device. If the metering device is not functioning correctly, the refrigerant may not be distributed properly, causing low superheat and subcooling values to occur.
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The last two digits of my student ID are 34
Using Booth's Algorithm, multiply the last two digits of your Student ID. Show your work.
The last two digits of my student ID are 34. Using Booth's Algorithm, multiply the last two digits of your Student ID. The last two digits of the Student ID 34 multiplied using Booth's algorithm are 56.
Booth's algorithm is a multiplication algorithm that relies on the binary number system. The last two digits of the student ID are 34. Using Booth's algorithm, we will multiply the last two digits of the student ID. Therefore, to use Booth's algorithm, we convert the numbers to binary form.34 is 100010 in binary form. Booth's algorithm involves multiplication by either zero, one, or negative one, depending on the value of the digit to the right of the digit being multiplied, and is computed in binary. To begin, we add a zero to the left and to the right of the binary digits: 0100010. We will use the rightmost digit of the binary number to determine if we need to add or subtract the value in the left column. Therefore, we will place the binary digits in two columns as follows:0 1 0 0 0 1 0Now we need to identify the first and second steps.
Step 1: Identify the digits that are 01 and add 100010 to the left column, which corresponds to a shift of 1 bit to the right. Therefore, the binary number for 34 in Booth's algorithm becomes:00 1 0 0 0 1 000 100010
Step 2: Identify the digits that are 10 and subtract 100010 from the left column, which corresponds to a shift of 1 bit to the right. Therefore, the binary number for 34 in Booth's algorithm becomes :000 1 0 0 1 0000 100010The multiplication of 34 using Booth's algorithm results in 34 × 34 = 1156. The last two digits of 1156 are 56. Therefore, the last two digits of the Student ID 34 multiplied using Booth's algorithm are 56.
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The result of multiplying the last two digits of your student ID, 34, using Booth's Algorithm, is 1156. In Booth's Algorithm, we perform multiplication using binary representation and a series of shifting and adding operations. First, convert the decimal number 34 into binary, which is 100010. Next, apply Booth's Algorithm: Initialize the product register P with zeros and create an accumulator register A with the same value as the binary representation of the last two digits of your student ID, 34.
Create a variable called counter and set it to the number of bits in the binary representation, which is 6. Perform the following steps in a loop until the counter reaches zero: a. Check the least significant bit (LSB) of A. If it is 1, subtract the binary value of 34 from P; otherwise, proceed to the next step. b. Right-shift P and A by one bit. c. If the two least significant bits of A are 10 or 01 (indicating a change from 1 to 0 or 0 to 1), add the binary value of 34 to P. d. Right-shift P and A by one bit. Repeat step 3 until the counter reaches zero. After performing the above steps, the value in the product register P will result from multiplying the last two digits of your student ID using Booth's Algorithm. In this case, the P value will be 1156, which is the final result. Booth's Algorithm is a multiplication algorithm that uses shifts and additions to perform binary multiplication efficiently. It reduces the number of required operations by examining patterns in the binary representation of the multiplier. In this case, we applied Booth's Algorithm to multiply the binary representation of the last two digits of your student ID, 34, and obtained the result 1156 in the product register P. By following the algorithm's steps, we shifted and added binary values based on the pattern observed in the multiplier. The algorithm iterates through each bit of the multiplier, updating the product register P and the accumulator register A accordingly. Finally, the value stored in P represents the product of the multiplication operation, which in this case is 1156.
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Why the hierarchical perspective information systems or functional perspective information systems does not meet today’s business environment ?
What are differences between ‘data warehouse’ and ‘operational database’.
Briefly discuss your understanding of ‘system integration’ using an example (hint: use ERP or else)
What Knowledge Management System is and why it is necessary in today’s business environment ?
Hierarchical perspective information systems and functional perspective information systems have some limitations that do not meet today's business environment.
Hierarchical perspective information systems have an organizational structure that is designed as a pyramid, where the highest levels make decisions, and the lower levels carry them out. However, today's business environment needs a flatter organizational structure to accommodate a broader range of activities
.Functional perspective information systems, on the other hand, have an organizational structure that is based on departments, and each department performs its unique functions. This structure can create a functional silo, where each department focuses on its operations, and communication is limited to within the department.
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(a) Suppose 10 packets arrive simultaneously to a link at which no packets are currently being transmitted or queued. Each packet is of length 50 bits, and the link has transmission rate 5Mbps. What is the average queuing delay for the 10 packets? (5pts) (b) Now suppose that 10 such packets arrive to the link every 10 −4
seconds. What is the average queuing delay of a packet? (5pts)
The average queuing delay for the 10 packets is 0 microseconds. the average queuing delay of a packet in this scenario is 50 microseconds.
(a)
To calculate the average queuing delay for the 10 packets, we need to consider the time it takes for each packet to be transmitted through the link.
Given that each packet is of length 50 bits and the link has a transmission rate of 5 Mbps (5 million bits per second), we can calculate the transmission time for each packet using the formula:
Transmission Time = Packet Length / Transmission Rate
Transmission Time = 50 bits / (5 Mbps) = 50 bits / (5 * 10⁶ bits per second) = 10 microseconds
Since all 10 packets arrive simultaneously and there are no packets currently being transmitted or queued, there is no queuing delay. Therefore, the average queuing delay for the 10 packets is 0 microseconds.
(b)
If 10 such packets arrive every 10⁻⁴ seconds, we need to consider the effect of the arrival rate on the queuing delay.
The average queuing delay can be calculated using the formula:
Average Queuing Delay = (Packet Length / Transmission Rate) / (1 - (Packet Arrival Rate * Packet Length / Transmission Rate))
Substituting the given values:
Packet Length = 50 bits
Transmission Rate = 5 Mbps
Packet Arrival Rate = 10 packets / 10⁻⁴ seconds = 10⁵ packets per second
Average Queuing Delay = (50 bits / (5 Mbps)) / (1 - (10⁵ packets per second * 50 bits / (5 Mbps)))
Simplifying the expression:
Average Queuing Delay = (50 / (5 * 10⁶)) / (1 - (10⁵ * 50 / (5 * 10⁶)))
Average Queuing Delay ≈ 0.00005 seconds or 50 microseconds
Therefore, the average queuing delay of a packet in this scenario is 50 microseconds.
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Create a comment with your name i 'date you started the lab 2. Initialize a variable that holds an intege alue between 0 and 9 , this is the secrent codt 3. Initialize a variable from input that asks the iser to enter tineir last name 4. If the last name is Sisko print a welcome statement, you can make this up 5. If the last name is not Sisko print an angry message that will challange them for their single digit passcode 6. Use exception handling that checks if the number entered is between 0 and 9 . If the number is greater than or less than the range print an error message 7. In that same exception if the value entered was not a number print an angry message informing them they need to enter a number between 0 and 9 8. If they did enter a number between 0 and 9 print a welcome message if they got it correct, if not let them know if the number they guessed was too high or too low
My name is Ginny and I started the lab on June 15th. Here is the main answer to the problem mentioned:
import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
int secretCode = (int) (Math.random() * 10);
Scanner sc = new Scanner(System.in);
System.out.println("Enter your last name:");
String lastName = sc.nextLine();
if (lastName.equalsIgnoreCase("Sisko"))
{
System.out.println("Welcome!");
}
else
{
System.out.println("You need to enter the single digit passcode:");
try
{
int guess = Integer.parseInt(sc.nextLine());
if (guess == secretCode)
{
System.out.println("Welcome!");
}
else if (guess < secretCode)
{
System.out.println("Your guess was too low!");
}
else
{
System.out.println("Your guess was too high!");
}
}
catch (NumberFormatException e)
{
System.out.println("You need to enter a number between 0 and 9!");
}
catch (Exception e)
{
System.out.println("Error occurred!");
}
}
}
}
The program initializes two variables, 'secretCode' and 'lastName', where 'secretCode' holds a random integer between 0 and 9 and 'lastName' is taken as an input from the user.The program then checks if the 'lastName' is equal to "Sisko", and if it is, it prints a welcome statement. If not, it prompts the user to enter the single-digit passcode using the 'guess' variable and then uses exception handling to check if the 'guess' is an integer and lies within the range of 0 to 9.
The program will print an error message if the user inputs an incorrect or out-of-range number and a welcome message if the user inputs the correct number.
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Project 3 - Communicating Results The evaluation of Web site accessibility according to the WCAG 2.1 For this project, you will visit one of your favorite websites, and evaluate the site f accessibility, following the principles introduced in the Web Content Accessibility Guidelines (WCAG). For this project, you will use the below template to follow the outline for your evaluation criteria. - Template for Accessibility Evaluation Report Before you begin this project, please review the tutorial links provide in the Week Instructions in Canvas. - Template for Accessibility Evaluation Report Before you begin this project, please review the tutorial links provive in the Week 5 Instructions in Canvas. Project Criteria 1. Evaluate any website of your choice, appropriate for an education setting. 2. Use the Template for Accessibility Evaluation Report criteria to complete the content requirements, and code in a webpage (project3.html) that includes all of the outlined items in the template for the evaluation of the site, specifically focusing on these points previously introduced in previous weeks. Perceivable Operable Understandable Robust Don't forget to reference the Quick Reference Guide for WCAG2.1 3. Also include a heading on your page for Project 3 , with your First name, Student 3. Also include a heading on your page for Project 3 with your First name, Student ID, and date coded. Assure you code to specifications as previously outlined for using proper html structure, CSS and proper syntax. - Assure the project links to all other projects. 4. Filename: project3.html 5. Include in your project (webpage), links to any tools you used in the evaluation process of the website, or provide references and/or links for resources used during the evaluation. If you have questions, or would like to schedule a phone conference for answering any questions, or getting you started, please email me in Canvas Inbox, or schedule a Student Connect session for assistance. 4. Filename: project3.html 5. Include in your project (webpage), links to any toofs you used in the evaluation process of the website, or provide references and/or inks for resources used during the evaluation. If you have questions, or would like to schedule a phone conference for answering a questions, or getting you started, please email me in Canvas Inbox, or schedule a Student Connect session for assistance. Submit for Grading to Canvas - Upload the public_html.zip to Canvas - Include all previous graded coding work completed to date. A customizable quick reference to Web Content Accessibility Guidelines (WCAG) 2 requirements (SUccess criterid)
Choose an education-related website, evaluate its accessibility based on WCAG 2.1 guidelines, and create an evaluation report webpage (project3.html) following the provided template.
How do I choose an appropriate website for evaluation in Project 3?When selecting a website for evaluation in Project 3, it is important to choose one that is relevant to an educational setting. Consider websites that cater to educational institutions, online courses, academic resources, or platforms aimed at enhancing learning experiences.
Ensure that the website has sufficient content and features to evaluate its accessibility based on the WCAG 2.1 guidelines.
Evaluate factors such as the availability of alternative text for images, keyboard accessibility, clear and consistent navigation, and compatibility with different assistive technologies. By choosing an appropriate website, you will have ample material to analyze and report on its accessibility standards.
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Data Modeling for Youth Soccer Clubs The local city youth league needs a database system to help track children that Nign up to play soccer. Data needs to be kept on each team and the children that will be playing on each team and their parents. Also, data needs to be kept on the coaches for each team and fees for enrollment. Expected Output: Develop Entity Dingram using MySQL Workbench or other Modeling Tools Primary Key, Foreign Key, and Attribute requirenents should be as per the design - Uplead the ERD Diagram - Upload Physical design by generating script from RRD diagram. - Your Name or ID should be listed as a Title
The database system for the local city youth league will include tracking children who sign up to play soccer, as well as information on teams, parents, coaches, and enrollment fees.
What are the entities and their relationships in the data model for the youth soccer club database?The main entities in the data model for the youth soccer club database include "Team," "Child," "Parent," and "Coach."
Each team can have multiple children playing on it, and each child can be associated with only one team.
Similarly, each child will have one or more parents, and each parent can be associated with multiple children.
Each team will have one coach, and a coach can be associated with only one team.
Additional attributes such as team name, child's name, parent's name, contact information, and enrollment fees will be included in the data model.
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Choose the correct output of the following code: print(4==7,6+4==10,4+5!=7) False True True False False True error False True False
The correct output of the given code `print(4==7,6+4==10,4+5!=7)` is `False True True`.
The first comparison is `4==7` which is not correct and the output of this comparison is `False`.
The second comparison is `6+4==10` which is correct and the output of this comparison is `True`.
The third comparison is `4+5!=7` which is correct and the output of this comparison is also `True`.
Hence, the correct output of the following code `print(4==7,6+4==10,4+5!=7)` is `False True True`.
Note: There is no error in the given code, so the option 'error' is not the correct answer for this question.
It is important to read and understand the question carefully to ensure that you are answering it correctly.
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Just complete the class, add what is need
JAVA Fininsh the code please JAVA
JAVA CODE
public class Rectangle {
private Point topLeft;
private Point bottomRight;
public Rectangle(Point topLeft, Point bottomRight) {
// complete the code
}
public Rectangle(double tlx, double tly, double brx, double bry) {
// complete the code
}
public Rectangle() {
// complete the code
}
public Rectangle(Rectangle org) {
// complete the code
}
//ADD getTopLeft
//ADD setTopLeft
//ADD getBottomRigh
//ADD setBottomRight
//ADD getLength
//ADD getWidth
//ADD getArea
//ADD getPerimeter
//ADD pointIsInRectangle //return true if the point in Rectangle
//ADD CircleIsInRectangle //return true if the point in Rectangle
//ADD toString // return width and length
//ADD equals // return true if two rectangles are equal in width and length
}
The completed code for the Rectangle class in Java, adding up the added methods is given below
What is the JAVA programjava
public class Rectangle {
private Point topLeft;
private Point bottomRight;
public Rectangle(Point topLeft, Point bottomRight) {
this.topLeft = topLeft;
this.bottomRight = bottomRight;
}
public Rectangle(double tlx, double tly, double brx, double bry) {
topLeft = new Point(tlx, tly);
bottomRight = new Point(brx, bry);
}
public Rectangle() {
topLeft = new Point(0, 0);
bottomRight = new Point(0, 0);
}
public Rectangle(Rectangle org) {
topLeft = org.getTopLeft();
bottomRight = org.getBottomRight();
}
public Point getTopLeft() {
return topLeft;
}
public void setTopLeft(Point topLeft) {
this.topLeft = topLeft;
}
public Point getBottomRight() {
return bottomRight;
}
public void setBottomRight(Point bottomRight) {
this.bottomRight = bottomRight;
}
public double getLength() {
return bottomRight.getX() - topLeft.getX();
}
public double getWidth() {
return bottomRight.getY() - topLeft.getY();
}
public double getArea() {
return getLength() * getWidth();
}
public double getPerimeter() {
return 2 * (getLength() + getWidth());
}
public boolean pointIsInRectangle(Point point) {
double x = point.getX();
double y = point.getY();
double tlx = topLeft.getX();
double tly = topLeft.getY();
double brx = bottomRight.getX();
double bry = bottomRight.getY();
return x >= tlx && x <= brx && y >= tly && y <= bry;
}
public boolean circleIsInRectangle(Point center, double radius) {
double x = center.getX();
double y = center.getY();
double tlx = topLeft.getX();
double tly = topLeft.getY();
double brx = bottomRight.getX();
double bry = bottomRight.getY();
return x - radius >= tlx && x + radius <= brx && y - radius >= tly && y + radius <= bry;
}
aOverride
public String toString() {
return "Width: " + getLength() + ", Length: " + getWidth();
}
aOverride
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof Rectangle)) {
return false;
}
Rectangle other = (Rectangle) obj;
return getLength() == other.getLength() && getWidth() == other.getWidth();
}
}
Therefore, in the code, I assumed the existence of a Point class, which stands as a point in the Cartesian coordinate system
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Write a python program that reads the data.csv file and plots the y variable and performs the following tasks:
plot the last 500 samples of the dataset.
Add an appropriate title, x-label, y-label, and legend to the plot.
Make sure that the x-axis shows the samples 9500-10000.
The given Python program demonstrates how to read and plot a .csv file using pandas and matplotlib libraries. The resulting plot displays the last 500 samples of the dataset with appropriate annotations.
Given dataset in the form of .csv file is read through Python program and plotted below steps to read and plot csv file in Python program:
Import required libraries to work with data frames and plot graphs (e.g. pandas, matplotlib)Read csv file as data frame using pandas librarySelect the desired samples as per requirement (in this case last 500 samples)Plot the selected samples using matplotlib libraryAdd appropriate title, x-label, y-label and legend to the plotLimit the x-axis as per requirement (in this case samples 9500-10000)The program is given below:import pandas as pdimport matplotlib.pyplot as plt# Reading dataset as dataframe df = pd.read_csv('data.csv')# Selecting last 500 samples of datasetlast_500 = df[-500:]# Plotting the selected data plt.plot(last_500['y'], label='y variable')# Adding title, x-label, y-label and legend to the plotplt.title('Last 500 samples of the Dataset')plt.xlabel('Samples')plt.ylabel('y variable')plt.legend()# Limiting x-axisplt.xlim(9500, 10000)plt.show()
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Which of the following lines of code will execute successfully? a=char(60), b=str(60), c=Int(true), d=int(‘21’), c= none(all four will execute successfully)
Among the given lines of code, only the line "b=str(60)" will execute successfully. Option B is correct.
Here's the breakdown:
- `a=c har(60)`: This line of code will not execute successfully because the "char" function is not a valid function in most programming languages. It seems like you may be confusing it with a function that converts a number to its corresponding ASCII character. If you're using a specific programming language, please let me know so I can provide more accurate information.
- `b=str(60)`: This line of code will execute successfully. The "str" function (or a similar function with a different name) is commonly used to convert a number to a string representation. In this case, it will convert the number 60 to the string "60".
- `c=Int(true)`: This line of code will not execute successfully because "Int" is not a recognized function or keyword in most programming languages for converting a boolean value (true or false) to an integer. Again, if you're using a specific programming language, please let me know for more accurate information.
- `d=int('21')`: This line of code will execute successfully if the programming language supports converting a string to an integer using the "int" function. The string '21' will be converted to the integer 21.
To summarize, only the line `b=str(60)` will execute successfully. Thus, option B is correct.
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_____, those without which the business cannot conduct its operations, are given the highest priority by the disaster recovery coordinator. a. Backup applications b. Customer applications
c. Mission-critical applications d. Recovery applications
The term 'Mission-critical applications' is the answer to the given question. Disaster Recovery Coordinator gives priority to Mission-critical applications that a business cannot conduct its operations without.
What are mission-critical applications?Mission-critical applications are computer programs that are essential to the proper functioning of an organization. These applications are critical to the success of a company, and if they go down, it could be disastrous. As a result, businesses prioritize the preservation of mission-critical applications during a disaster or emergency, as these programs are critical to the company's operations.In case of a disaster, the Disaster Recovery Coordinator gives high importance to these mission-critical applications. These applications are the backbone of a business, and without them, a company cannot run its operations smoothly or may not be able to operate at all.In conclusion, the Main answer is Mission-critical applications. These applications are given the highest priority by the disaster recovery coordinator, without which a business cannot conduct its operations.
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Read carefully and make the requirements in the last line
distributed system where components are spread across multiple nodes in a network and are able to communicate with each other in order to complete a task. The input to a distributed system is typically data that needs to be processed, and the output is the results of the processing. The boundary of a distributed system is typically the network that the nodes are connected to. The components of a distributed system are the nodes, which can be either physical or virtual machines. The 'interrelationships' between the components of a distributed system are typically governed by some kind of protocol. The 'purpose' of a distributed system is to provide a way to process data in a parallel and fault-tolerant manner. The 'interfaces' of a distributed system are the APIs that allow components to communicate with each other. The 'environment' of a distributed system is the hardware and software that the system is running on.
*What is required is You need to describe the funcionality of the system and each of its components and draw the diagram according to this.
A distributed system is a system of computers or machines that work together to provide a single service or application to a user. It has multiple components that work together to achieve a common goal.
Its functionality is designed to distribute the workload among the nodes to minimize the processing time and improve reliability and fault-tolerance.Explanation:The components of a distributed system are as follows: Nodes: Nodes are the components of a distributed system. These can be physical or virtual machines that work together to achieve a common goal.
Network: The boundary of a distributed system is the network that the nodes are connected to. It enables the nodes to communicate with each other and share data.Protocol: The interrelationships between the components of a distributed system are governed by some kind of protocol. This is used to ensure that the nodes communicate with each other in a reliable and consistent manner.
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In each part below, draw a DFA that accepts the indicated language over {a,b}.[9 points] a) The language of all strings that ending with 'ba'. b) The language of all strings that starting and ending with ' a '. c) The language of all strings in which the number of both a's and of b's is odd.
States q1, q3, q5, and q7 are accept states.
Part A) The language of all strings that end with 'ba' can be represented by the following DFA:q0 --a--> q0 --b--> q1
Part B) The language of all strings that start and end with 'a' can be represented by the following DFA:q0 --a--> q1 --(a,b)--> q2 --a--> q3
Part C) The language of all strings in which the number of both 'a' and 'b' is odd can be represented by the following DFA:q0 --a--> q1 --b--> q2 --a--> q3 --b--> q4 --a--> q5 --b--> q6 --a--> q7 --b--> q8q0 is the start state.
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Describe how a host "A" obtains the IP address of a corresponding hostname "B", given the local DNS server and the DNS server hierarchy.
When a host "A" needs to obtain the IP address of a corresponding hostname "B", it follows a process involving the local DNS server and the DNS server hierarchy:
Host "A" sends a DNS query to its configured local DNS server, requesting the IP address of hostname "B". The local DNS server is typically provided by the ISP or network administrator.
If the local DNS server has the IP address of hostname "B" cached in its memory, it responds immediately with the IP address to host "A". This is known as a DNS cache hit, and it helps improve response times.
If the local DNS server does not have the IP address of hostname "B" in its cache, it acts as a DNS resolver and initiates a recursive DNS resolution process. The local DNS server contacts the root DNS server and asks for the IP address of the top-level domain (TLD) server responsible for the specific domain.
The root DNS server responds to the local DNS server with the IP address of the TLD server responsible for the domain of hostname "B".
The local DNS server then contacts the TLD server and requests the IP address of the authoritative DNS server responsible for the specific domain.
The TLD server provides the IP address of the authoritative DNS server to the local DNS server.
Finally, the local DNS server contacts the authoritative DNS server and requests the IP address of hostname "B".
The authoritative DNS server responds with the IP address of hostname "B" to the local DNS server.
The local DNS server caches the IP address for future reference and sends the response back to host "A" with the IP address of hostname "B".
Host "A" can now use the obtained IP address to establish a connection with hostname "B".
In summary, the local DNS server acts as an intermediary between the host and the DNS server hierarchy, resolving the hostname by querying various DNS servers until it obtains the corresponding IP address. This hierarchical approach helps distribute the DNS resolution workload and ensures efficient resolution of domain names.
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Question 1. Set job_titles to a table with two columns. The first column should be called Organization Group and have the name of every "Organization Group" once, and the second column should be called Jobs with each row in that second column containing an array of the names of all the job titles within that "Organization Group". Don't worry if there are multiple of the same job titles. (9 Points) you will need to use one of them in your call to group. Hint 2: It might be helpful to create intermediary tables and experiment with the given functions. # Pick one of the two functions defined below in your call to group. def first_item(array): '"Returns the first item'" return array.item(0) def full_array(array): '"Returns the array that is passed through'"' return arrayl # Make a call to group using one of the functions above when you define job_titles job_titles = job_titles job_titles
To create the table job_titles with the specified columns, you can use the group function.
How can the group function be used to create the job_titles table?The group function allows you to group elements based on a specific criterion. In this case, we want to group the job titles by the "Organization Group" column. We can use the group function and one of the provided functions, first_item or full_array, to achieve this.
By applying the group function to the job titles table, specifying the "Organization Group" column as the key, and using one of the provided functions as the group operation, we can obtain the desired result. The resulting table will have the "Organization Group" as the first column and an array of job titles within that group as the second column.
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COLLAPSE
Discuss the importance of requirement with the context of Human-Computer Interaction
Requirements play a crucial role in Human-Computer Interaction (HCI) as they define the necessary features and functionalities of a system, ensuring that it meets the needs and expectations of its users.
Requirements are an essential aspect of any software development process, including the field of Human-Computer Interaction. In the context of HCI, requirements serve as a blueprint that outlines the specific goals, functionalities, and constraints that need to be addressed when designing and developing a computer-based system.
First and foremost, requirements help in understanding the needs and expectations of the users. By conducting user research and gathering requirements, designers can gain insights into the target users' preferences, tasks, and contexts of use. This understanding allows them to create user-centered designs that align with the users' mental models and workflow, ultimately leading to improved user satisfaction and productivity.
Additionally, requirements serve as a communication tool between various stakeholders involved in the HCI process. They provide a common language for designers, developers, and clients to articulate and discuss the desired system functionalities. Clear and well-defined requirements help minimize misunderstandings and ensure that everyone involved has a shared understanding of the project objectives.
Furthermore, requirements act as a basis for evaluation and testing. By establishing clear requirements, designers can create usability metrics and evaluation criteria to assess the effectiveness, efficiency, and user satisfaction of the system. Testing the system against these requirements helps identify any usability issues or gaps, allowing for iterative design improvements and ensuring that the final product meets the users' needs.
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the interaction model of communication differs from the transmission model of communication by adding in the following components:
The interaction model of communication differs from the transmission model of communication by adding in the following components: feedback, fields of experience, and context.
The transmission model of communication is a model that is used to describe communication as a process of transferring information from one person to another. This model is also known as the linear model of communication. This model has three major components: sender, message, and receiver.The interaction model of communication is a model that describes communication as a process of sharing meaning with others. This model includes feedback, fields of experience, and context in addition to the sender, message, and receiver components. Feedback is the response or reaction of the receiver to the message sent by the sender.
Fields of experience refer to the background, knowledge, and cultural context that the sender and receiver bring to the communication process. Context refers to the physical, social, and psychological environment in which communication takes place. In the interaction model, communication is a two-way process where both the sender and the receiver are actively involved in the communication process. The interaction model emphasizes the importance of feedback, fields of experience, and context in communication.
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The technical problem/fix analysts are usually:a.experts.b.testers.c.engineers.d.All of these are correct
The technical problem/fix analysts can be experts, testers, engineers, or a combination of these roles.
Technical problem/fix analysts can encompass a variety of roles, and all of the options mentioned (experts, testers, engineers) are correct. Let's break down each role:
1. Experts: Technical problem/fix analysts can be experts in their respective fields, possessing in-depth knowledge and experience related to the systems or technologies they are working with. They are well-versed in troubleshooting and identifying solutions for complex technical issues.
2. Testers: Technical problem/fix analysts often perform testing activities as part of their responsibilities. They validate and verify the functionality of systems or software, ensuring that fixes or solutions effectively address identified problems. Testers play a crucial role in identifying bugs, glitches, or other issues that need to be addressed.
3. Engineers: Technical problem/fix analysts can also be engineers who specialize in problem-solving and developing solutions. They apply their engineering knowledge and skills to analyze and resolve technical issues, using their expertise to implement effective fixes or improvements.
In practice, technical problem/fix analysts may encompass a combination of these roles. They bring together their expertise, testing abilities, and engineering skills to analyze, diagnose, and resolve technical problems, ultimately ensuring that systems and technologies are functioning optimally.
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Which of the following are true about classes in Python? Check all that are true. A class called "Building" is defined with the statement "Building class (object)" A class definition is only a blueprint and is not executed by the Python interpreter until used by other code A class consists of attributes (data) and methods (functions or behaviors) code in the class definition is executed when the Python interpreter reads that code objects of a class are created by executing the nit "constructor method an object " A " of class "Building" is created by the statement " A= new Building (− parameters go here −) −
Which of the following are true about class methods? Check all that are true a class must always have a methed called " init a mothod called "getDay" is defined by the statement "def getDay (self" a class must ahrays have a method called ini if it is to be used to create objocts of the class's type a method may only use atrituses that belong to she object in which irs defined a mestiod uses attibules bat belong to the object in which ir's desned by using a commen prefix such as "self- - lor example, "self day" to read or updafe object attribote "day" a clais must have a method called st_- Which of the following statements is true about class attributes? Check all that are true the values of an objact's atributes are called the state of that object atributes can be any kind of Python data types all of a class's atributes are defined by its constructor method atiritutes names must start with an upper of lower case letter object attibutes can be read or updated by using "dot notation" - for example, for an object of st name - 'Mary' 'resets object st's name to "Mary" attributes belonging to an object are referenced by mathods insith the class by using a common koyword prefix, customarily "self" winterchet ioner
It is the blueprint or plan of any programming code that is written in Python. The following are true about classes in Python: A class called "Building" is defined with the statement "Building class (object)."A class definition is only a blueprint and is not executed by the Python interpreter until used by other code.A class consists of attributes (data) and methods (functions or behaviors)Code in the class definition is executed when the Python interpreter reads that code.
Classes in Python is an essential aspect of programming in Python. It is the blueprint or plan of any programming code that is written in Python. The following are true about classes in Python:
A class called "Building" is defined with the statement "Building class (object)."A class definition is only a blueprint and is not executed by the Python interpreter until used by other code.A class consists of attributes (data) and methods (functions or behaviors)Code in the class definition is executed when the Python interpreter reads that code.
Objects of a class are created by executing the nit "constructor method an object " A " of class "Building" is created by the statement " A= new Building (− parameters go here −).It's essential to understand class methods in Python. The following are true about class methods:A class must always have a method called " init."A method called "getDay" is defined by the statement "def getDay (self."A class must always have a method called ini if it is to be used to create objects of the class's type.
A method may only use attributes that belong to the object in which it is defined.A method uses attributes that belong to the object in which it's designed by using a common prefix such as "self- - for example, "self day" to read or updates the object attribute "day."A class must-have method called st_.Class attributes are equally essential, and the following are true about them:The values of an object's attributes are called the state of that object.
Attributes can be any kind of Python data types.All of a class's attributes are defined by its constructor method.Attributes names must start with an upper of lower case letter.Object attributes can be read or updated by using "dot notation" - for example, for an object of st name - 'Mary' 'resets object st's name to "Mary."Attributes belonging to an object are referenced by methods inside the class by using a common keyword prefix, customarily "self."
In summary, understanding classes in Python and the associated class methods and class attributes is essential to programming effectively in Python.
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From the NY Collision data nycollision.csv compute for each borough and tabulate the following variables - Number of pedestrians injured in each Borough will all stats (total, min, max, mean, median, mode, quartiles). All the stats have to be calculated in a single line of code. (10 Points) - List the number of accidents by the type of vehicles involved in each borough (5 points) - List the factors responsible for the accidents in each borough in descending order ( 5 points) - List the number of accidents by each hour of the day (5 points) - Give the thonthly number of accidents by month and year (5 points) - For Queens, List the number of persons injured, killed, pedestrians injured, killed, cyclist injured, killed, motorist injured, killed in the long form with two columns (Borough, type of outcome ie., injured/killed, number) Do not include rows with empty values.
Here is the solution for the given problem. From the NY Collision data nycollision.csv compute for each borough and tabulate the following variables - Number of pedestrians injured in each Borough will all stats (total, min, max, mean, median, mode, quartiles).
All the stats have to be calculated in a single line of code:```Rscript :```library(dplyr)library(readr)collisions <- read_csv('nycollision.csv')pedestrians <- collisions %>% filter(pedestrians_injured > 0) %>% group_by(borough) %>% summarize(total = sum(pedestrians_injured), min = min(pedestrians_injured), max = max(pedestrians_injured), mean = mean(pedestrians_injured), median = median(pedestrians_injured), mode = names(which.max(table(pedestrians_injured))), q1 = quantile(pedestrians_injured, 0.25), q3 = quantile(pedestrians_injured, 0.75))pedestrians```List the number of accidents by the type of vehicles involved in each borough:```Rscript :```collisions %>% group_by(borough, vehicle_type_code1) %>% summarize(total = n())```List the factors responsible for the accidents in each borough in descending order:
```Rscript :```collisions %>% group_by(borough, contributing_factor_vehicle_1) %>% summarize(total = n()) %>% arrange(desc(total))```List the number of accidents by each hour of the day:```Rscript :```collisions %>% group_by(hour) %>% summarize(total = n())```Give the monthly number of accidents by month and year:```Rscript :```collisions %>% group_by(year, month) %>% summarize(total = n())```
For Queens, list the number of persons injured, killed, pedestrians injured, killed, cyclist injured, killed, motorist injured, killed in the long form with two columns (Borough, type of outcome ie., injured/killed, number) Do not include rows with empty values:```Rscript :```queens <- collisions %>% filter(borough == 'QUEENS')injuries <- queens %>% summarize(persons_injured = sum(persons_injured), persons_killed = sum(persons_killed), pedestrians_injured = sum(pedestrians_injured), pedestrians_killed = sum(pedestrians_killed), cyclist_injured = sum(cyclist_injured), cyclist_killed = sum(cyclist_killed), motorist_injured = sum(motorist_injured), motorist_killed = sum(motorist_killed))injuries_df <- data.frame(outcome = c('persons_injured', 'persons_killed', 'pedestrians_injured', 'pedestrians_killed', 'cyclist_injured', 'cyclist_killed', 'motorist_injured', 'motorist_killed'), value = c(injuries$persons_injured, injuries$persons_killed, injuries$pedestrians_injured, injuries$pedestrians_killed, injuries$cyclist_injured, injuries$cyclist_killed, injuries$motorist_injured, injuries$motorist_killed))injuries_df```
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