Hexadecimal Calculator

Please check the attached file.

Hexadecimal Calculator Implement a hexadecimal calculator for iOS. Requirements: • The calculator should support 4 basic arithmetic operations: + – * and / • The calculator will operate on hexadecimal numbers, not decimal numbers • The calculator only needs to operate on unsigned integers (i.e. UInt). You do not need to consider negative numbers or fractions. • The calculator should support the 16-digit hexadecimal numbers (i.e. The range of the numbers is from 0 to FFFF FFFF FFFF FFFF). Prevent the user from entering a number that is greater than FFFF FFFF FFFF FFFF. • The calculator should handle overflow and underflow gracefully. The app must not crash. • The calculator should handle division-by-zero error gracefully. The app must not crash. • The calculator should be able to support most of the devices and orientations. If it does not support the old devices earlier than iPhone 6, it is okay. Hint: • To convert a string to a hex number, use “radix: 16” as an argument. For example: var s:String? s = “1A” var intHex:UInt = 0 intHex = UInt(s!, radix: 16)! print(intHex) // shows 26 intHex = 90 s = String(intHex, radix: 16).uppercased() print(s!) // shows 5A • It is recommended that you use a UI label instead of a text field, so that the user will not type directly by using a keyboard. You will need to provide a button for each digit. • Strings may be concatenated by using + operator. E.g. var s1 = “1234” var s2 = “5” print(s1 + s2) // shows 12345 You may want to do string concatenation in the action of each digit button. • To prevent the user from entering a number exceeding the size of 16 digits, you may verify the length of the string associated with the UI label. • To handle overflow and underflow, use &+, &-, and &* instead of +, -, and *. • To support different devices and orientations, use stack view, scroll view, or both. • Design your algorithm first! Think about the status of the calculator: when to take the first operand, when to take the second operand, when to append digits to the current number, and when to refresh the current number, etc. The functionality of your hex calculator worth 60% of the credit, while the appearance of the user interfaces worth 40%. When you submit the assignment, please compress the entire project folder into a single zip file, and upload it to D2L. In addition, please provide 4 to 5 screenshots of your app in different devices and orientations. If your app doesn’t work on every device/orientation, please specify why. The screenshots of a sample program are shown below. Your UI does not have to be the same as the sample program. As long as it has a pleasing-looking, it should be fine. 

Research project on OAuth

Research about “OAuth” and provide the following. It must consist of:

1. 5 sources annotated bibliography

2. slide presentation with 12 or more slides

3. Summary or Abstract containing at least 750 words.

dicussion-9

 

The shared security responsibility model that a dba must be aware of  when moving to the cloud.

Include at least 3 quotes from your sources enclosed in quotation marks and cited in-line by reference to your reference list.  Example: “words you copied” (citation) These quotes should be one full sentence not altered or paraphrased. Cite your sources using APA format. Use the quotes in your paragaphs.  Stand alone quotes will not count toward the 3 required quotes.

discussion api

 Name the three essential elements of a basic structured cabling network? How are they installed and what are the components that are involved with them? 

R programming

Module Assignment

Module 4

QMB-6304 Analytical Methods for Business

Write a simple R script to execute the following:

Preprocessing

  1. Load into R the data included in “Assignment 4 Data.xlsx”.  This data set shows age (years), weight (pounds), and height (inches) for 251 adults.  This will be your master data set.
  2. Create a new variable in the master data set which will be each individual’s body mass index.  The calculation should be done as:

BMI=(weight* .45)(height* .025)2

  1. Using the method presented in class and applying the numerical portion of your U number as a random number seed, take a random sample of 45 cases from the master data set. This will be your primary data set.

Analysis

  1. Use R to conduct a simple linear regression on the data with weight as the independent variable and bmi as the dependent variable.  As a part of this be sure to:
    1. Report the beta coefficients and associated p values and confidence intervals from your model.
    2. Give a written interpretation of your beta coefficients in terms of the actual case at hand.
    3. Assess your model’s conformance with the LINE assumptions of regression.
    4. Give a prediction using your model for an individual weighing 185 pounds. Include 95% confidence and prediction intervals and written interpretations of both intervals.
  2. A 10-year-old boy has been presented to you who weighs 72 pounds.  Give two reasons for why it would be wrong to use your model to predict the boy’s BMI.

Your deliverable will be a single MS-Word file showing 1) the R script which executes the above instructions and 2) the results of those instructions.  The first line of your script file should be a “#” comment line showing your name as it appears in Canvas.  Results should be presented in the order in which they are listed here.  Deliverable due time will be announced in class and on Canvas.  This is an individual assignment to be completed and submitted by the time stated on Canvas.  No collaboration of any sort is allowed on this assignment.  Please remember the prohibition on using screen shots in your deliverable.

Need Assignment Help

  Go online and search for information that relates to ethical hacking  (white hat or gray hat hacking). Choose one of these areas explain why a  company might benefit from hiring someone to hack into their systems.  

  Your assignment should be 3-4 paragraphs in length.  (300-400 words)

I will expect APA formatting, citations, references