C#

Write a program in C# that prompts the user for a name, Social Security number, hourly pay rate, and number of hours worked. In an attractive format, dis- play all the input data as well as the following: » Gross pay, defined as hourly pay rate times hours worked » Federal withholding tax, defined as 15% of the gross pay » State withholding tax, defined as 5% of the gross pay » Net pay, defined as gross pay minus taxes

should High Frequency trading be more regulated or not and explain why it should or shouldn't be more regulated ?

One of the main functions of saliva is to buffer against acid from food and plaque, which contributes significantly to the formation of cavities. While there are several buffers in saliva, carbonic acid (H2CO3) has the highest concentration and has the greatest effect on pH.

(a) While the salivary concentration of carbonic acid stays at a fairly constant 1.3 mM, the level of bicarbonate (HCO3-) can vary with the rate that saliva flows from salivary glands. For low flow rates, the bicarbonate concentration is around 2 mM; for medium flow rates, it is 30 mM; and for high flow rates, around 60 mM. The pKa of carbonic acid at body temperature is 6.1. Assuming that the pH of Saliva is determined primarily by carbonic acid and bicarbonate, determine the pH of saliva for each of the three flow rates. The normal pH of saliva is about 6.3.

(b) The most prevalent bacterium in the mouth, streptococcus mutans, breaks down sugar and releases lactic acid (pKa = 3.86). If S. mutans has produced 10^-8 moles of lactic acid since your last swallow, what is the pH of your saliva? What would the pH be without the bicarbonate buffer? Assume that your mouth contains about 1 mL of saliva and that your saliva is flowing at a low rate.

(c) You take a drink of orange juice, and after you swallow, 0.5 mL remains in your mouth. What is the pH of your saliva if your mouth contains 1 mL of pure saliva, and if you model orange juice as 1.0 mM citric acid (pKa = 3.13; assume only one dissociation).

(d) Why do some toothpastes contain baking soda (sodium bicarbonate)?

A eco-conscious dad notices that we left the computer and light on from the last homework. After scolding us about the electrical bill, he turns them both off, and they eventually cool to the ambient temperature of 25 ^oC.

a) What is the total change in entropy for the computer chip (or bulb) for this cooling process? Find the total entropy change for the universe. (Recall that the chip is 50. g silicon, 20. g copper, and 65 g. polyvinyl chloride, initially running at a temperature of 75 ^oC.)

b) Find the specific entropy change for the light bulb in this cooling process. Calculate the specific entropy generated for the bulb. (The light bulb is initially filled with argon, an ideal gas, at a temperature of 65.0 ^oC a volume of 40. cm³ and a pressure of 103.8 kPa. Neglect the glass and metal comprising the rest of the light bulb.)

Part 4: Explain in a couple of paragraphs how public key encryption can be used to implement a digital signature. Be sure you are very clear on when a private key is used and when a public key is used.

Part 5: Generally, a digital signature involves encrypting a cryptographic hash, or digest, generated from the message. Explain why we do not encrypt the message itself. You can answer this question in one sentence.

Part 6: For each of the following scenarios below, tell what type of encryption is most appropriate and in a sentence or two explain the reasoning for your choice.
1. Alice wants to send a confidential message to Bill, whom she has never met and who lives in a distant country.
2. Charlie wants to be sure that no one but he can see the financial and medical records he has stored on his computer.
3. David needs a way to check that large computer files stored on corporate servers have not been modified.
4. Eddard uses a "cloud" backup service; he wants to be sure the operators of the service cannot read his files.
5. Frank needs to send a message to George. The message need not be confidential, but George must be assured that it actually came from Frank.

Two different forecasting techniques (F1 and F2) were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows:

a. Compute MAD for each set of forecasts. Given your results, which forecast appears to be more accurate? (Round your answers to 2 decimal place.)

  F1 ,F2 , None (pick one) appears to be more accurate.

b. Compute the MSE for each set of forecasts. Given your results, which forecast appears to be more accurate? (Round your answers to 2 decimal places.)

  F2 , F1 , None (pick 1) appears to be more accurate.

c. In practice, either MAD or MSE would be employed to compute forecast errors. What factors might lead a manager to choose one rather than the other?

Either one might already be in use, familiar to users, and have past values for comparison. If    (Click to select)  tracking signals  control charts  are used, MSE would be natural; if  (Click to select)  tracking signals  control charts  are used, MAD would be more natural.

d. Compute MAPE for each data set. Which forecast appears to be more accurate? (Round your intermediate calculations to 2 decimal places and and final answers to 2 decimal places.)

F1, F2 ,None (pick 1) appears to be more accurate.

Joe is a 25 year-old single worker who receives no coverage for health care from his employer. Joe has a non-fatal medical condition that can be treated at a price of $60 per treatment. Discuss how the out-of-pocket cost that Joe pays for health care will change if he switches jobs to a new employer that offers health care coverage with each of the options below. (12 points, 4 points each)

      A. a $250 per year calendar-year deductible.

      B. a 75/25 participating deductible in which the insurer pays three-quarters of the cost.

      C. an HMO that satisfies the traditional federal standards for qualification with a $20 copay

Implementing Polynomials using Singly Linked List in C++

1. The Term Class
   
   Create a class to represent a term in an algebraic expression. As defined here, a term consists of an integer coefficient and a nonnegative integer exponent. E.g.
   
   • in the term 4X², the coefficient is 4 and the exponent 2
   • in -6X⁸, the coefficient is -6 and the exponent 8
   
   Your class will have a constructor that creates a Term object with a coefficient and exponent passed as parameters, and accessor methods that return the coefficient and the exponent
   
   
   II. The Polynomial Class
   
   Now create a class to represent a polynomial. As defined here, a polynomial is a sequence of terms. E.g.
   
   1. 3X² + 4X⁴ + X⁶
   2. 2 + 5X² + 6X³ + 2X⁷
   3. 4X¹⁰
   
   The terms of polynomial 1 are (3,2), (4,4) and (1,6). The terms of polynomial 2 are (2,0), (5,2), (6,3) and (2,7). Polynomial 3 has only one term (4,10)
   
   F To receive credit for this assignment, your class must use a generic “List of Term” to store the terms of a Polynomial object
   
   Your class will have a constructor that creates an empty list and additional methods to do each of the following:
   
   1. insert a new term in its proper place in a polynomial (see “Additional Specifications,” below)
   
   2. return all the terms of a polynomial as a single line string, as shown here:
   
   3x^2 + 4x^4 + x^6
   
   3. delete a term from a polynomial (see “Additional Specifications,” below)
   
   4. Compute and return the derivative of all the polynomial

5. reverse the order of the terms in a polynomial (see “Additional Specifications,” below)


III. The Test Class

The main method of your test class will create a Polynomial object and then read and process a series of operations

The operations are:

1. INSERT X Y

Insert a new term with coefficient X and exponent Y into its proper place in the polynomial

(insert method : adds terms to the list in descending order of power)

2. DELETE X Y

Remove the term with coefficient X and exponent Y from the polynomial

3. REVERSE

Reverse the order of the terms of the polynomial

4. 1^st DEV

          to find the first derivatives of the polynomial

   2^nd DEV

         to find the second derivatives of the polynomial

Each operation is to be carried out by calling a method of the Polynomial class

Each operation read must be “echo printed” to the screen

After each operation, print the updated polynomial by calling the toString() method

For the Derivatives operation, print the string returned
-----------------------------------------------------------------------------

DESIGN A FLOWCHART IN THE APPLICATION FLOWGORITHM

Number Analysis Program Design a program that asks the user to enter a maximum of 20 numbers. The program should store the numbers in an array and then display the following data: -The lowest number in the array. -The highest number in the array. -The total of the numbers in the array. -The average of the numbers in the array.

PLEASE AND THANK YOU

subject DBA

use mysql workbench and select my guitar shop database as default schema

Problem8

Write a script that implements the following design in a database named my_web_db:

    users                                                       downloads                                                                 Products

*user_id INT                                         * download_id INT                                                   * product_id INT                     

*email_address VARCHAR(100)          * user_id INT                                                         * product_name VARCHAR(45)

*first_name VARCHAR(45)                  *download_date DATETIME

*last_name VARCHAR(45)                  * filename VARCHAR(50)

                                                               *product_id INT

Details

• In the downloads table, the user_id and product_id columns are the foreign keys.
• Include a statement to drop the database if it already exists.
• Include statements to create and select the database.
• Include any indexes that you think are necessary.
• Specify the utf8 character set for all tables.
• Specify the InnoDB storage engine for all tables.

Solution fill in the blanks :-

______DATABASE ____________ ;

CREATE DATABASE my_web_db ___________ ;

USE my_web_db;

_________ TABLE _______

    user_id       INT          PRIMARY _______ AUTO_INCREMENT,

    email_address VARCHAR(100) UNIQUE,

    first_name    VARCHAR(45) NOT NULL,

    last_name     VARCHAR(45) NOT NULL

) ___________ ;

__________ products (

    product_id   INT         ________ AUTO_INCREMENT,

    product_name VARCHAR(45) UNIQUE

__________

____________

    download_id   INT         PRIMARY KEY,

    ____________       INT         NOT NULL,

    download_date DATETIME    NOT NULL,

    filename      __________ NOT NULL,

    product_id    INT         NOT NULL,

    ___________ fk_downloads_users

_____________ KEY (user_id )

        REFERENCES users (user_id),

_______________

_______________ product_id)

        REFERENCES products _______________

) ENGINE = _________ ;

what does this code means. Explain each line (briefly)

Book.findOneAndUpdate[{isbn:req.params.isbn},

{$set:{authFName:req .body.authFName,

authLName: req.body.authLName}, {new:true}}

Could you please explain ray tracing for mirrors, how do you know which way the traces go and why, I'm having trouble figuring out where the object is vs. the image. Thank you

2.)Why is it difficult for labor negotiators to switch from traditional to integrative bargaining? What recommendations would you make for negotiators trying to make this switch? Why is it more difficult for union negotiators to make this change compared to company negotiators.

An ambulance is traveling towards the scene of an accident at 40 m/s. Since this is a rather high speed the ambulance is blaring its siren that has a frequency of 325 Hz. The speed of sound is around 340 m/s

Part 1. Find the wavelength of the sound waves in front of the ambulance. Give your answer to 3 significant digits

m

Part 2. Due to the Doppler Effect what is the effective frequency of this sound to the listener f_L? Give your answer to 3 significant digits

Hz

Part 3. Use this new frequency and that the amplitude of the sound waves are 3.85 cm to find what the intensity of the sound wave is to an observer standing at the crash site when the ambulance is 1000 m away?

Give your answer to 3 significant digits

W/m²

Part 4. What is the intensity when the ambulance is parked 10 m away from the crash site? Give your answer to 3 significant digits

W/m²

Part 5. What is the intensity level for both? Give your answer to the nearest decibel

1000 m: dB

10 m: dB

STEP 1: Your assignment is to choose one of your OWN behaviors that you would like to modify, using the conditioning principles you learned about in the text. Consider bad habits you might be interested in changing, such as biting your nails, procrastinating, not exercising, etc. You can utilize principles of classical or operant conditioning, recruit others to help you, employ successive approximations and shaping and modify schedules of reinforcement in order to improve your life.

You must spend at least 10 solid days devoted to this project in order to see solid results. Please get started right away.

STEP 2: Write a 2-3 page paper (500-800 words) about your project that explains your project, the type of conditioning you used, and the methods and procedures used to execute your project. You should explain the process of shaping the behavior and utilize any or all appropriate vocabulary. Finally, include a discussion of the results and an analysis of recommendations for improvement or future changes.