Tag: Programming

1. Generate two signals with a length of 200, x1=sin(2*pi*10*t)+randn1(1, 200) and x2=2sin(2pi*5*t)+randn2(1, 200), where t=[0:99]/100. (randn1 and randn2 are two different random noises generated by randn.) a) Describe the main features of the autocorrelation coefficients and the cross-correlation of the two functions;b) Plot the above three coefficients in Matlab.c)Find their CSD using two methods and compare them to see if they are the same in Matlab.2.

Generics

Part 1: Queue Class

For this part, you must create a Queue Class. A queue is similar to a stack (what the FILO class that we went over in class). A queue is FIFO (first in first out). You can think of a queue as a checkout line in a store. When you add to the queue, you add to the end of it. When you remove from the queue, you remove from the front, and everyone moves up one spot.

The properties that your queue class must have is the following:

• int size – how many elements are currently in the queue
• int max_size – how many total elements can the queue hold
• T* queue – the array representing our queue
• void enqueue(T&) – place T at the end of the queue
• T& dequeue() – return the element at the front of the queue, remove it from queue, and move all elements up one spot. (can return T instead of T& if you choose to do that)
• T& peek() – return the element at the front of the queue, but don’t update the rest of the queue.
• bool isEmpty() – returns true if queue is empty. False otherwise.
• int size() – return how many elements are in the queue.
• Operator<< – output the entire queue in the following format
• 1) element1, 2) element2, etc.
• Operator<< can be replaced with a print function that prints out the contents of the queue to cout, or a to_string function that returns a string with the contents of the queue.

Part 2: main

In you main, create 2 queues, each one containing different types. Add several elements to each one. Then print each queue to terminal. Then remove some elements from each list, printing out each element you remove. Then print each queue again. Lastly, print out the first element in queue.

Threads

You will be creating a program to simulate depositing and withdrawing money into a bank account. This homework will not require any objects.

• The account balance will be stored in a global variable.
• The function account transaction (double amount) will print out the balance, change the account balance by the amount (can be positive or negative), then print out the new balance. This function must be able to handle simultaneous transactions and always give the correct result.

The main function will do the following:

• Set the account balance to the beginning balance (You choose the amount)
• Print out the beginning balance
• Add two amounts to the account balance and remove two amounts from the balance (You choose the amounts). The transactions must happen simultaneously as threads
• Print the final balance after all transactions have finished and joined back to main.

Execution

Your program must run when the following command is typed in.

For generics, use this command: g++ -std=c++17 abc1234_generics_main.cpp

For threads, use this command: g++ -std=c++17 abc1234_threads_main.cpp -pthread

I’m working on a r case study and need support to help me understand better.

You are given nine years of individual EPA data in csv format. The data files are not very large (each file is approx. 1 MB). Each yearly file contains thousands of vehicles along with their vital information and pollution testing records. Each file contains 42 columns, the details of which are given in the Data Dictionary document. Please note that the original data had more columns, and some of them were removed for the consistency purposes. The deleted columns also exist in the data dictionary and you are asked to ignore them while referring to the dictionary. 

I recently have an android app developing, please help me improve the UI to a good design. Like changing the color, improve the layout, words and buttom style, etc. I prefer simple interface design not complex, colorful design. I hope you good at android studio and java, please use java sdk 11.

I don’t understand this Java question and need help to study.

You are working as a software developer for a large insurance company. Your company is planning to migrate the existing systems from Visual Basic to Java and this will require new calculations. You will be creating a program that calculates the insurance payment category based on the BMI score.

Your Java program should perform the following things:

1. Take the input from the user about the patient name, weight, birthdate, and height.
2. Calculate Body Mass Index.
3. Display person name and BMI Category.
4. If the BMI Score is less than 18.5, then underweight.
5. If the BMI Score is between 18.5-24.9, then Normal.
6. If the BMI score is between 25 to 29.9, then Overweight.
7. If the BMI score is greater than 29.9, then Obesity.
8. Calculate Insurance Payment Category based on BMI Category.
9. If underweight, then insurance payment category is low.
10. If Normal weight, then insurance payment category is low.
11. If Overweight, then insurance payment category is high.
12. If Obesity, then insurance payment category is highest.

You need to display the patient name, BMI Category and Insurance Payment Category.

I need to create functions for the attached excel as per the following

1. Status : Find and highlight columns that contain the same number and the Date +/- 2 days Result correct other wise wrong
2. Size: Find and highlight columns contain the same number and the Date +/- 2 days, and same Size, result is correct, if Size is different Result wrong Size
3. Agent : Find and highlight columns contain with the same number and the Date +/- 2 days, and same Agent, result is correct , if Agent is different Result wrong Agent

You can use any kind of function!

I’m trying to study for my Java course and I need some help to understand this question.

You are working as the software developer and need to solve the problem using the inheritance concept. Your goal is to create the method to sort the numbers and then perform the addition. Here are the steps that need to be completed.

Step 1: Create the base class that has the sorting method. The sorting method should take the input parameter as the array and print the sorted array.

Step 2: Create the child class that inherits all the methods from the above base class. The child class has the addnumber method that adds all the numbers from an array. The addnumber method first calls the base class sorting method to sort all the array numbers. Once the numbers in the array are sorted, then addnumber method adds all of them.

Your submission should include the following:

• Base Class
• Child Class
• Entire Java Solution
• Output screenshot created in Microsoft Word

provides practice with applying the ERD
notation to narrative problem descriptions. You should use the ER
Assistant to complete assignment 6. Copy and paste each ERD
into a Word document. Label the problems in your Word document so that
the grader can easily match your diagrams to the specified problems.

I’m working on a r question and need an explanation to help me understand better.

Applying all the code on your selected dataset, https://www.kaggle.com/sogun3/uspollution

Part 1

complete all codes from Chapter 7
Time-dependent graphs. Make sure you submit to this link two things
1. Your report file showing screenshots of all commands from Rstudio GUI
Make sure you show all Rstudio GUIs
2. Submit your R script code Quiz7
Applying all the code on your selected dataset, complete all codes from (provide screenshot as well)

Chapter
8 Statistical Models. Make sure you submit to this link two things
1. Your report file showing screenshots of all commands from Rstudio GUI
Make sure you show all Rstudio GUIs
2. Submit your R script code

Part 2

1. There must be a thorough data plan this includes: PowerPoint presentation
   1. Where the data is online
   2. How you know the data is accurate and the plan for ensuring accuracy.
   3. An import of the data into the selected tool.
2. A paper that includes:
   1. The data plan mentioned above
   2. The problem- note the description and why it’s a problem and how you are going to make a recommendation with the data presented.
   3. The analysis of why the data will solve the issue.
   4. Graphical representation and formulas. The screenshots of the formulas in the tool must be present.
   5. A summary of the consideration and evaluation of results
      1. This includes your final analysis of the problem and the resolution.