Consider a network that is a rooted tree, with the root as its source, the leaves as its sinks, and all the edges directed along the paths from the root to the leaves. Design an efficient algorithm for finding a maximum flow in such a network. What is the time efficiency of your algorithm

Answer:

In studies about new medicines, researchers usually give one group of patients the medicine that is designed to treat an illness. They give another group of patients a placebo, which is taken the same way as the medicine but does not actually contain the ingredients of any medicine. Different medicines are tested in different experiments, but the placebos usually contain the same non-medical ingredients. If both groups of patients are healed, then researchers cannot be sure whether the medicine caused improvement, but if the group given the medicine is healed while the group given the placebo remains ill, researchers can conclude that the medicine causes the illness to go away.

In medical experiments, which group receives placebos?

the experimental group

the control group

both the experimental and control groups

neither the experimental nor control group

Explanation:

Answer:

This is not a benefit provided by a stakeholder analysis document: You can prioritize stakeholders so you make sure to keep the most important ones happy. Explanation: ... The purpose of the document is not to prioritize stakeholders but to identify the groups.

Explanation:

Answer:

fiikslid wugx uesbuluss wuz euzsbwzube

Answer:

Explanation:

The following code is written in Javascript and is a function called primes that takes in a single parameter as an int variable named n. An array is created and looped through checking which one is prime. If So it, changes the value to true, otherwise it changes it to false. Then it creates another array that loops through the boolArray and grabs the actual numberical value of all the prime numbers. A test case for n=150 is created and the output can be seen in the image below highlighted in red.

function primes(n) {

   //Boolean Array to check which numbers from 1 to n are prime

   const boolArr = new Array(n + 1);

   boolArr.fill(true);

   boolArr[0] = boolArr[1] = false;

   for (let i = 2; i <= Math.sqrt(n); i++) {

      for (let j = 2; i * j <= n; j++) {

          boolArr[i * j] = false;

      }

   }

   //New Array for Only the Prime Numbers

   const primeNums = new Array();

  for (let x = 0; x <= boolArr.length; x++) {

       if (boolArr[x] === true) {

           primeNums.push(x);

       }

  }

  return primeNums;

}

alert(primes(150));

Answer:

See attachment for algorithm (flowchart)

Explanation:

The interpretation of the question is to design a flowchart for times 2 multiplication table (see attachment for the flowchart)

The explanation:

1. Start ---> Start the algorithm

2. num = 1 ---> Initializes num to 1

3. while num [tex]\le[/tex] 12 ---> The following loop is repeated while num is less than 12

 3.1 print 2 * num ----> Print the current times 2 element

 3.2 num++ ---> Increment num by 1

4. Stop ---> End the algorithm

Answer:

Access Points, Home Server, and Virtual Assistant/IOT connected devices

Explanation:

There are three main things that should be implemented/incorporated into your design and these are Access Points, Home Server, and Virtual Assistant/IOT connected devices. Access Points for Ethernet, and HDMI should be located in various important walls near outlets. This would allow you to easily connect your devices without having to run cables around the house. A home server will allow you to easily access your data from multiple devices in your home, and if you connect it to the internet you can access that info from anywhere around the world. Lastly, would be a virtual assistant with IOT connected devices. This would allow you to control various functions of your home with your voice including lights, temperature, and locks.

Answer:

The ping will change.

Explanation:

Assuming you mean ping from device with SIM card to another host (no mater what host), the ping will change. Ping changes even on the same device because network speed and performance of all the nodes on the route changes continuously. However, if two of your devices (phone & router) are configured differently (use different routing under the hood), then it will also affect the ping.

Answer:

Currently, raster (bitmap files) and vector graphics are used in web design. But if you want to make a great logo and fully enjoy the use of it you should pick vector graphics for it in the first place. And this is why most designers opt for it.

Explanation:

Answer:

Please find the complete solution in the attached file.

Explanation:

In this question, the system for both the Savings account should also be chosen, the same should be done and for checking account. Will all stay same in. 

Answer:

data mining

Explanation:

Data mining can be defined as a process which typically involves extracting and analyzing data contained in large databases through the use of specialized software to generate new information.

Generally, computer database contain the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. These records are stored and communicated to other data users when required or needed.

Hence, as a result of the advancement in information technology (IT), IT professionals have learned over time on how to utilize data mining as a technique to look for hidden patterns and previously unknown relationships that exists among data which is capable of leading to better decision making.

Furthermore, data mining is a process that has been in existence for a very long time and has significantly impacted workflow management, communication and other areas.

Answer:

Hre the complete implementation of python code that reads two files and merges them together.

def merge_file(past_file_path,proposed_file_path, merged_file_path):

   past_file_contents=load_file(past_file_path)

   proposed_file_contents=load_file(proposed_file_path)

   proposed_customer_name = []

   for row in proposed_file_contents:

       proposed_customer_name.append(row[1])

   with open(merged_file_path,'w') as outputf:

       outputf.write("Customer Number, Customer Name, Address\r\n")

       for row in proposed_file_contents:

           line = str(row[0]) +", " + str(row[1]) + ", " + str(row[2]) +"\r\n"

           outputf.write(line)

       for row in past_file_contents:

           if row[1] in proposed_customer_name:

               continue

           else:

               line = str(row[0]) + ", " + str(row[1]) + ", " + str(row[2]) + "\r\n"

               outputf.write(line)

       print("Files merged successfully!")

# reads the file and returns the content as 2D lists

def load_file(path):

   file_contents = []

   with open(path, 'r') as pastf:

       for line in pastf:

           cells = line.split(",")

           row = []

           for cell in cells:

               if(cell.lower().strip()=="customer number"):

                   break

               else:

                   row.append(cell.strip())

           if  len(row)>0:

               file_contents.append(row)

   return file_contents

past_file_path="F:\\Past Customer.txt"

proposed_file_path="F:\\Proposed Customer.txt"

merged_file_path="F:\\Merged File.txt"

merge_file(past_file_path,proposed_file_path,merged_file_path)

Answer:

#include<iostream>

using namespace std;

int main()

{

  int a[20],n;

  int *p;

  cout<<"\n enter how many values do you want to enter:";

  cin>>n;

  for(int i=0;i<n;i++)

  {

      cout<<"\n Enter the "<<i+1 <<"th value :";

      cin>>*(p+i);

      //reading the values into the array using pointer

  }

  cout<<"\n The values in the array using pointer is:\n";

  for(int i=0;i<n;i++)

  {

      cout<<"\n (p+"<<i<<"): "<<*(p+i);

      //here we can use both *(p+i) or p[i] both are pointer subscript notations

  }

}

Output:

Answer: they meet it because CAD workstations are supposed to be equipped with high end supplies.

Explanation:

Answer:

c. mentorship programs taking place via the internet

Explanation:

The World Wide Web (WWW) was created by Tim Berners-Lee in 1990, which eventually gave rise to the development of Web 2.0 in 1999.

Web 2.0 can be defined as a collection of internet software programs or applications which avails the end users the ability or opportunity to share files and resources, as well as enhance collaboration over the internet.

Basically, it's an evolution from a static worldwide web to a dynamic web that enhanced social media. Some of the examples of social media platforms (web 2.0) are You-Tube, Flickr, Go-ogle maps, Go-ogle docs, Face-book, Twit-ter, Insta-gram etc.

Some of the main characteristics of Web 2.0 are;

I. Social networking.

II. Blogging.

III. Interactive comments being available on many websites.

Also, most software applications developed for Web 2.0 avails its users the ability to synchronize with handheld or mobile devices such as smartphones.

However, mentorship programs taking place via the internet is not a characteristic of Web 2.0 but that of Web 3.0 (e-mentoring).

The option that is not a characteristic of Web 2.0 from the following is mentorship programs taking place via the internet.

Web 2.0 speaks volumes about the Internet applications of the twenty-first millennium that have revolutionized the digital era. It is the second level of internet development.

It distinguishes the shift from static web 1.0 pages to engaging user-generated content. Web 2.0 websites have altered the way data is communicated and distributed. Web 2.0 emphasizes the following:

Examples of Web 2.0 social media include:

With these social media and web 2.0 websites;

Therefore, we can conclude that the one that is not part of the characteristics of Web 2.0 is mentorship programs taking place via the internet.

Learn more about web 2.0 here:

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Using a combination method to determine how many ways can 18 people be divided into programming teams of 3 members, the number of programming teams can be arranged in 816 ways.

In mathematical model, a combination is a mathematical approach for calculating the number of potential arrangements in a set of things without taking the order arrangement of the items is into consideration.

It can be expressed by using the formula;

[tex]\mathbf{ _nC_r = \dfrac{n !}{ r!(n-r)! } }[/tex]

where:

[tex] \mathbf{ _nC_r = \dfrac{18!}{ 3!(18-3)! } }[/tex]

[tex]\mathbf{ _nC_r = \dfrac{18!}{ 3!(15)! } }[/tex]

[tex] \mathbf{ _nC_r = \dfrac{18 \times \: 17 \times \: 16 \times 15!}{ 3!(15)! } }[/tex]

[tex]\mathbf{ _nC_r = \dfrac{18 \times \: 17 \times \: 16 }{ 3 \times \: 2 \times 1} }[/tex]

= 816 ways

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Answer:

Algorithm :

1.START

2. sum=0 ; n=1 ; length = 1

3. sum = sum + n

4. n = n + 2

5. length = length + 1

6. Repeat steps 3, 4 and 5 until n <= 99

7. mean = sum / length

8. print(mean)

Explanation:

Sum initializes the addition of the odd numbers

n starts from 1 and increments by 2, this means every n value is a odd number

The condition n <= 99 ensures the loop isn't above range isn't above 100 ;

The length variable, counts the number of odd values

Mean is obtained by dividing the SUM by the number of odd values.

Answer:

architect Christopher Alexander is the person who originally introduced the idea of patterns as a solution design concept.

The person who originally introduced the idea of patterns as a solution design concept named as Christopher Alexander who was an architect.

Architecture is referred to as an innovative technique or artwork based on buildings or physical structures that aims at creating cultural values for upcoming generations to understand the importance of history.

The external layout can be made to best support human existence and health by using a collection of hereditary solutions known as the "pattern language." It creates a set of helpful relationships by combining geometry and social behavior patterns.

Christopher Alexander, a British-American engineer and design theorist of Austrian heritage, is renowned for his several works on the design and construction process introduced the idea of patterns as a solution design concept.

Learn more about pattern language architecture, here:

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Answer:

A. Dialogues are based only based on player's actions.

Explanation:

In multiplayer games, there is a feature of dialogue which makes a game interesting. These dialogues are displayed when a player acts in a certain way. The actions of the player defines the dialogues. There are various sets of dialogues which are fed into the game and they are displayed one by one when player performs actions.

Answer:

python is the best programming language

Answer:

The 9 Best Programming Languages to Learn in 2021

JavaScript. It's impossible to be a software developer these days without using JavaScript in some way. ...

Swift. If you're interested in Apple products and mobile app development, Swift is a good place to start. ...

Scala. ...

Go. ...

Python. ...

Elm. ...

Ruby. ...

C#

Answer:

Explanation:

The following is written in Java and uses a for loop to add 10 elements to the ArrayList since the first element is manually added as 1. Then it calculates each element by multiplying the previous element (saved in count) by 2. The program works perfectly and without bugs. A test output can be seen in the attached image below.

import java.util.ArrayList;

class Brainly {

   public static void main(String[] args) {

       ArrayList<Integer> numberList = new ArrayList<>();

       numberList.add(0, 1);

       int count = 1;

       for (int i = 1; i < 11; i++) {

           numberList.add(i, (count * 2));

           count = count * 2;

       }

       for (Integer i : numberList) {

           System.out.println(i);

       }

   }

}

Answer:

Near field communication (NFC)

Explanation:

Near field communication (NFC) can be defined as a short-range high radio-frequency identification (RFID) wireless communication technology that is used for the exchange of data in a simple and secure form, especially for electronic devices within a distance of about 10 centimeters.

Also, Near field communication (NFC) can be used independently or in conjunction with other wireless communication technology such as Bluetooth.

Some of the areas in which Near field communication (NFC) is used are confirmation of tickets at a concert, payment of fares for public transport systems, check-in and check-out in hotels, viewing a map, etc.

Assuming you have a contactless magnetic stripe and chip reader by Square. Thus, the type of wireless transmission that this device use to receive encrypted data is near field communication (NFC).

when an external device becomes ready to be serviced by the processor the device sends a(n) interrupt signal to the processor

Answer:

okay if I am it administration I will port 10000

To configure the computer in the lobby to use the corporate proxy server, you will need to follow these steps:

Settings > Networks&Internet > Proxy > Manual Proxy Setup > Address & proxy > save

A proxy server is a device or router that acts as a connection point between users and the internet.

Proxy Server settings would be the same for both Wifi and Ethernet connections, explaining about the configuration in Windows Operating System.

Open the internet browser on the laptop and go to the settings or preferences page. The exact location of the proxy settings will vary depending on the browser you are using.

In the settings or preferences page, look for the "Proxy" or "Network" section.

In the proxy settings, select the option to use a proxy server.

Enter the address of the corporate proxy server in the "Server" or "Address" field.

Enter the port number "9000" in the "Port" field.

Save the changes and close the settings or preferences page.

Test the proxy server configuration by attempting to access a website. If the configuration is correct, the laptop should be able to access the internet through the proxy server.

Settings > Networks&Internet > Proxy > Manual Proxy Setup > Address & proxy > save

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Answer:

The program in C++ is as follows:

#include <iostream>

using namespace std;

double average(double s1, double s2, double s3, double s4, double s5){

   double avg = (s1 + s2 + s3 + s4 + s5)/5;

   return avg;}

char lGrade(double score){

   char grade;

   if(score>= 90 && score <= 100){ grade ='A'; }

   else if(score>= 80 && score <= 89){ grade ='B'; }

   else if(score>= 70 && score <= 79){ grade ='C'; }

   else if(score>= 60 && score <= 69){ grade ='D'; }

   else if(score < 60){ grade ='F'; }

   return grade;}

int main(){

   double s1,s2,s3,s4,s5;

   cin>>s1>>s2>>s3>>s4>>s5;

   double avg = average(s1,s2,s3,s4,s5);

   cout<<s1<<" "<<lGrade(s1)<<endl;

   cout<<s2<<" "<<lGrade(s2)<<endl;

   cout<<s3<<" "<<lGrade(s3)<<endl;

   cout<<s4<<" "<<lGrade(s4)<<endl;

   cout<<s5<<" "<<lGrade(s5)<<endl;

   cout<<avg<<" "<<lGrade(avg)<<endl;

   return 0;}

Explanation:

The three functions to include in the program are not stated; so, I used the following functions in the program

1. The main function

2. average function

3. Letter grade function

The average function begins here

double average(double s1, double s2, double s3, double s4, double s5){

This calculates the average

   double avg = (s1 + s2 + s3 + s4 + s5)/5;

This returns the calculated average

   return avg;}

The letter grade function begins here

char lGrade(double score){

This declares the grade

   char grade;

If score is between 90 and 100 (inclusive), grade is A

   if(score>= 90 && score <= 100){ grade ='A'; }

If score is between 00 and 89 (inclusive), grade is B

   else if(score>= 80 && score <= 89){ grade ='B'; }

If score is between 70 and 79 (inclusive), grade is C

   else if(score>= 70 && score <= 79){ grade ='C'; }

If score is between 60 and 69 (inclusive), grade is D

   else if(score>= 60 && score <= 69){ grade ='D'; }

If score is less than 60, grade is F

   else if(score < 60){ grade ='F'; }

This returns the calculated grade

   return grade;}

The main begins here

int main(){

This declares the 5 scores

   double s1,s2,s3,s4,s5;

This gets input for the 5 scores

   cin>>s1>>s2>>s3>>s4>>s5;

This calls the average function for average

   double avg = average(s1,s2,s3,s4,s5);

This calls the letter grade function for the 5 scores

   cout<<s1<<" "<<lGrade(s1)<<endl;

   cout<<s2<<" "<<lGrade(s2)<<endl;

   cout<<s3<<" "<<lGrade(s3)<<endl;

   cout<<s4<<" "<<lGrade(s4)<<endl;

   cout<<s5<<" "<<lGrade(s5)<<endl;

This calls the average function for the average

   cout<<avg<<" "<<lGrade(avg)<<endl;

Lab Experiment

Field Experiment

Natural Experiment.

Answer:

Experimental research for individuals in the physical sciences and many other fields is the best-known kind of research design. The main reason is that experimental research is a typical scientific experiment, similar to that carried out in secondary schools.

Explanation:

The types of research designs are determined by how the researchers assign subjects to various conditions and groups. They are of three different types: pre-experimental, almost experimental, and real experimental research.

Pre-experimental Research Design:-

In pre-experimental research, the effect of the application of a supposedly changing independent variable is observed by either a group or different dependent groups. It is the simplest form of experimental design and does not involve a control group.

Quasi-experimental Research Design:-

The term "almost" refers to partial, half, or pseudo. The quasi-experimental research therefore resembles, but not the same, the real experimental research. The participants are not assigned randomly in quasi-examples and are therefore used in environments that are difficult or unable to randomize.

True Experimental Research Design:-

To confirm or refute a hypothesis, real experimental research is based on statistical analyses. It is the most exact experimental type and can be performed on two randomly assigned subjects with, or without a pretest.

The true experimental design of the research must include a control group, a variable that the researcher can manipulate and the distribution must be random.

Answer:

d. test case generation

Explanation:

Testing should be automated, so that bugs and other errors can be identified without a human error and lack of concentration.

The System Development Life Cycle (SDLC) phase that has seen a substantial amount of automation is the A. code generation.

Thus, while automation will be useful with all the SDLC phases, substantial amount of automation initiatives have been seen with the code generation phase.

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Answer:

Explanation:

This code was written in Java. It creates the Cars class with the requested variables and methods. It also creates the TestCars class which asks the user for the necessary inputs and then creates three Cars objects and passes the input values to the constructors. Finally, it uses the show() method on each object to call the information. A test has been created and the output can be seen in the attached image below.

import java.util.Scanner;

class TestCars{

   public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       System.out.print("Enter Car Make: ");

       String make1 = in.next();

       System.out.print("Enter Car Model: ");

       String model1 = in.next();

       System.out.print("Enter Car Year: ");

       int year1 = in.nextInt();

       System.out.print("Enter Car Make: ");

       String make2 = in.next();

       System.out.print("Enter Car Model: ");

       String model2 = in.next();

       System.out.print("Enter Car Year: ");

       int year2 = in.nextInt();

       System.out.print("Enter Car Make: ");

       String make3 = in.next();

       System.out.print("Enter Car Model: ");

       String model3 = in.next();

       System.out.print("Enter Car Year: ");

       int year3 = in.nextInt();

       Cars car1 = new Cars(make1, model1, year1);

       Cars car2 = new Cars(make2, model2, year2);

       Cars car3 = new Cars(make3, model3, year3);

       car1.show();

       car2.show();

       car3.show();

   }

}

class Cars {

   String makes, models;

   int years;

   public Cars(String makes, String models, int years) {

       this.makes = makes;

       this.models = models;

       this.years = years;

   }

   public void show() {

       System.out.println("Car's make: " + this.makes);

       System.out.println("Car's model: " + this.models);

       System.out.println("Car's year: " + this.years);

   }

}

Answer:

The answer is "Option c".

Explanation:

This required user access policy is a tool used for a central authority that assigns access privileges depending on regulations.

It is a security method that limits the capacity of foreign firms to give or refuse access to a file program's resource objects.

It is a system that imposed access control on the premise of object labels and subject clearance. Such topics and items, like confidential, secret, and top-secret, have clearances and designations, appropriately.