computer science

tech article ’21

Introduction

If you could read one and only one ESSAY to learn about the state of Information Systems in the world and in business, then this is the one:

Ford, P. (2015, June 15). Code: An Essay. Bloomberg Businessweek, 4431, 13–110.

Together with a partner,

  • summarize THREE total chapters (one per column + one from random list),
    • write a quiz question for each, and generate a list of facts.
  • Then, write your own chapter with new or different content.
  • Lastly, create and update the TIMELINE with facts and details from all 4 chapters.
  • NOTE: That is ALL Three Parts (summaries, chapter, & timeline) with the same partner.

Submit via CNVS tech-story-partners

  • only one partner needs to submit provided that you have both joined a tech-story-partners group
    • CNVS > People > tech-story-partners

The Essay: CODE?

The What is Code? issue of Bloomberg Businessweek from June 15, 2015 is a collection of 41 short articles (or chapters) written by Paul Ford.

Henceforth, I’ll call this resource: “CODE?”

You can find it in a variety of places and formats:

  • CODE? via Bloomberg: interactive activities throughout
    • (like a GIF of a sweaty Steve Balmer of Microsoft.)
    • (I saw him once in 2001 when I was a consultant up at MS HQ in Redmond, WA)
    • (Whoa, strong flex, Dr. Cumbie)
  • CODE? as a scanned/downloadable PDF
    • can’t CTRL-F search & not screen-reader compliant
  • Search for it at UNA Library
    • query: JN “Bloomberg Businessweek”
    • then > Full text access > Business Source Complete
    • scroll way down on right side of issue list
    • expand: [+] Jun 2015
    • click: Issue 4431 – 6/15/2015
    • each chapter listed as its own entry, can’t view it all at once.

Article Selection

CODE? has 41 “articles” (or chapters, sections, whatever)

Pick one from each column (CODE?, p. 15)

  • chose one from pp. 17-70
  • chose one from pp. 71-109

The choice is up to you. If you pick one that doesn’t fit well with the assignment requirements, go back to and pick another!

Lastly, choose one from this list:

Click to Expand
  • tech-story-group —> CODE? Chapter
  • 1 > 10/Why are Programmers So Intense About Languages?
  • 2 > 6/How Does Code Become Software?
  • 3 > 33/Nothing Is Built
  • 4 > 5/From Hardware to Software
  • 5 > 3/Let’s Begin
  • 6 > 39/Managing Programmers
  • 7 > 7/What Is an Algorithm?
  • 8 > 27/Off the Shelf
  • 9 > 26/Liquid Infrastructure
  • 10 > 41/Should You Learn Code?
  • 11 > 4/How do you type an “A”?
  • 12 > 15/Look How Big and Weird Things Get With Just Python
  • 13 > 9/What’s With All These Conferences, Anyway?
  • 14 > 21/The Time You Attended the E-mail Address Validation Meeting
  • 15 > 2/Why Are We Here?
  • 16 > 20/Why Are There So Many Languages?
  • 17 > 41/Should You Learn Code?
  • 18 > 22/What Is the Relationship Between Code and Data?
  • 19 > 25/Briefly on the Huge Subject of Microsoft
  • 20 > 16/Why Are Coders so Angry?
  • 21 > 8/The Sprint
  • 22 > 36/The Triumph of Middle Management
  • 23 > 32/What is Debugging?
  • 24 > 11/The Beauty of a Standard Library
  • 25 > 34/How Does Testing Work?
  • 26 > 30/How Are Apps Made?
  • 27 > 35/And Now for Something Beautiful
  • 28 > 18/The Thing About Real Artists is That They-
  • 29 > 12/What do Different Languages Do?
  • 30 > 1/The Man in the Taupe Blazer
  • 31 > 28/What About JavaScript?
  • 32 > 40/“We Are Going to Ship”
  • 33 > 37/How Do You Pick a Programming Language?
  • 34 > 19/We Still Need to Choose…
  • 35 > 29/What is the Absolute Minimum I Must Know About PHP?
  • 36 > 23/Where Does Data Live?
  • 37 > 38/Welcome to the Scrum
  • 38 > 35/And Now for Something Beautiful
  • 39 > 13/The Importance of C
  • 40 > 2/Why Are We Here?
  • 41 > 27/Off the Shelf
  • 42 > 31/The Framework: Wilder, Younger Cousin of the Software Development Kit
  • 43 > 14/The Corporate Object Revolution
  • 44 > 19/We Still Need to Choose…
  • 45 > 24/The Language of White Collars
  • 46 > 35/And Now for Something Beautiful
  • 47 > 4/How do you type an “A”?
  • 48 > 17/The Legend of the 10X Programmer
  • 49 > 26/Liquid Infrastructure
  • But we already picked the RANDOM one!

    NBD. Just go up or down one on the list

  • Our random one is JUNK. There’s not enough content in it to complete this assignment.

    NBD. Just go up or down one on the list

Working with a Partner

  • How?
    • That’s up to you: Zoom, MS Teams, CNVS Group Page, Google Doc (😍), Email MS Word versions back and forth.
**EXPAND THIS** to read about PARTNER INSURANCE.
  • RARE but not fun when it does occur.
  • Partner is a non-responsive freeloader, rolling the dice on an assignment that is 25% of their grade.
  • DOCUMENT progress and contributions.
    • work on a shared platform (like Goooooogle Docs) that tracks full revision history and who did what.
    • Heck, even attaching docs back and forth
    • Let me know early! I will drop your partner out of your group and permit you to find someone else or submit individually. This is not to be done casually.
  • Keep in mind, we are all busy and on different orbits and schedules.
    • Give ample time windows and a quick phone call is better than pushing back a Zoom meeting another week.
    • Work async: if you define your tasks, then you can work and “handoff” (just like DevOps). “I’ll summarize the first two this morning, you can read over and edit tonight & add in the third summary.”

Instructions

TIP: Look ahead to the Submission instructions. You are limited to a CNVS Text Input box for formatting. When writing focus on Clarity & Content

Three ARTICLE SUMMARIES

Instructions also on the CNVS assignment submission.

Click here for ARTICLE SUMMARY Instructions

a) Write an EXECUTIVE BRIEF. Bold & Underline all important terms (from part b).

TIPS: Include key points from the article but do not simply restate them. Provide some insight that addresses: Why should we care? What a manager needs to know?

b) List and define/describe all dates, facts, terminology. You may need to consult some other source; cite it if you do. Wiki is cool (Like Ford says in CODE?).

c) Write a question that you’d put on an exam: multiple choice/answer, matching, short answer (no essay or true/false). Provide feedback to that question, i.e., what a student would see as guidance if they missed that question.

EXAMPLE:

Review of Chapter 2: “Why Are We Here?”

a) Executive Summary

  • about a paragraph here, bullet points are good.
  • lead in with your insight/interpretation of why this is important and what we need to know from this.
  • when mentioning terms, facts, and other that are included in part (b), underline and boldface them

b) Glossary

  • 1986 – the year of my silver convertible Chrysler LeBaron
  • Somebody – invented something, started a company, and probably good at juggling too
  • tech stuff – some programming language or platform or product
  • organization – some company or government or department
  • socio/cultural stuff – developers think they are sooooo cool
  • management stuff – how we run companies

c) Question

Can I kick it?

a) yes you can (correct answer)

Explanation: ttps://www.youtube.com/watch?v=O3pyCGnZzYA

THEN REPEAT TWICE MORE

DIY (Do-it-yourself) ARTICLE

Instructions also on the CNVS assignment submission.

Click here for DIY ARTICLE Instructions

Write your own article, in the same style as CODE? with a punchy, oddly-specific title.

  • You may tell about a personal experience, an instance at work something you’ve heard about or observed.
    • I suggest changing names of people and companies for confidentiality
  • You can pick from one of Cumbie’s old lectures
    • some are audio-only, some are text only
  • CODE? is so 2015. You can find something new and shiny…like:
    • “Bitcoin, Bitcoin, Bitcoin!”
    • “That Time GameStop Broke Wall Street”
    • “React.js. Not just another framework”
    • “Columnar Databases”
    • “Remember When Healthcare.gov Flopped”
  • Your story can be management/culture-based or technical-based.
  • It can cover a specific, illustrative event like this Rookie coding mistake prior to Gab hack came from site’s CTO or something in general like: DevOps.
  • Here are some title samples that I came up with:
    • “that time the important email went to spam”
    • “when Joe replied all to the entire company”
    • “why you should (or shouldn’t care) about text message encryption?”
    • “Your mother and I want to have a serious talk with you about Bitcoin”
  • Length and tone should be similar to a CODE? Chapter.
  • Define/Describe all terms/facts/people/places
  • Find sources and cite when needed (let’s say, at least 2 sources)
  • Write your own quiz question with an explanation

TIMELINE

Instructions also on the CNVS assignment submission.

Click here for TIMELINE Instructions
  • CREATE a timeline computing history
    • There are several overlays of timelines, eras, and all, in different sets of completion.
    • Use these (or find BETTER resources out there)
    • To create a general TIMELINE of the History of Computing.
    • Recommend doing this in an outline form.
    • Level of Detail: I’d recommend somewhere from 3-5 general eras, with dates, and just a few major categories under each.
  • Then, UPDATE the timeline with at least TEN facts, some from each of the FOUR articles (three reviewed plus your own).

You are somewhat limited to what you can submit via CNVS, I believe text-based only but you can try to paste/upload in other media.

Submission

  • Submit via CNVS Assignment. Each part of the assignment has its own text-input area (uploads allowed on TIMELINE)
  • DO NOT WRITE YOUR ANSWERS DIRECTLY INTO CNVS. It will not auto-save. It will glitch. It’s a web-based form. Instead:
    • Write offline or in something cool like a Google Doc.
    • When ready to submit, copy/paste into CNVS and clean up formatting as needed.
    • I think you can upload images too if you choose for your timeline or otherwise.
  • Use Grammarly

Cumbie Tech Article Summaries

Criteria Ratings Pts

This criterion is linked to a Learning OutcomeINSTRUCTIONSCovered 3 articles: one per column + random.
Included Exec Summary, Factsheet, Question

5 pts

Full Marks

3 pts

Partial

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeFORMATClear & Organized

5 pts

Full Marks

3 pts

Partial

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeSummary #1Understood & get the gist without having to read the article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeFacts #1Understood, complete, explained.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeQuestion #1Understood, complete can answer from article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeSummary #2Understood & get the gist without having to read the article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeFacts #2Understood, complete, explained.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeQuestion #2Understood, complete can answer from article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeSummary #3Understood & get the gist without having to read the article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeFacts #3Understood, complete, explained.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeQuestion #3Understood, complete can answer from article.

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

This criterion is linked to a Learning OutcomeOverall QualitySubjective & relative to other submissions

5 pts

Full

Clear & Complete

4 pts

Most

Some aspect unclear or incomplete

3 pts

Some

Missing a few things.

2 pts

Less

Includes some content but unclear or missing more than it includes.

1 pts

Least

Attempted but off-base.

0 pts

No Marks

5 pts

Total Points: 60


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Computer Science

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

The project consists of three parts. The submission of this project will consist of two attachments:1.A Word document that is prepared according to the APA standards of formatting. In the Word document, explain the experiments and their respective conclusions, and additional information as indicated in each problem

Either an Excel workbook or an R script file (.R file) that contains all the work and the calculations indicated in parts 13 of the project. Please save your Excel workbook or R script file

Part 1: Shortterm Forecasting:

(i)Use a simple line plot of both time series to detect seasonal, irregular, or trend behaviors if any. Write a summary of your observations of both time series in your report.

(ii)Perform exponential smoothing to forecast both pricesfor period 253. Use successive values of 0.15, 0,35, 0.55, and 0.75for the smoothing parameter α. Next, calculate the MAPD (Mean Absolute Percentage Deviation)of each forecast; and based on the MAPDs, determine the value of αthat has yielded the most accurate forecastfor each stock. In your report, describe your results; and explain whyin your opinionsuch valuesof αhaveyielded the most accurate forecasts for the two stocks.

(iii)Use your exponential smoothing forecast of part (ii) with 𝜶=𝟎.55and perform an adjusted exponential smoothing to forecast both prices for period 253. Use successive values of 0.15, 0.25, 0.45, and 0.85for the trend parametersβfor both stocks. Next, calculatethe MAPEs(Mean Absolute Percentage Error) of your forecasts anddetermine the valuesof βthat haveprovided the most accurate forecasts for both stocks. In your report, describe your results and explain why, in your opinion,such valuesof βhave yielded the most accurate forecasts.

Part 2: Longterm Forecasting

(i)For each stock, use a 3period weighted moving averages to forecast its value during periods 1 through 100. Use the weights 0.5(for the most recent period), 0.3 (for the period before the most recent), and 0.2 (for two periods ago). Next, use the observedvalue for period 101as the base of a linear trend, and use that linear trend to forecast the values of both stocks for periods 101 through 257. Write a summary of your results in your report. Describe how accurate this method of forecasting has been by comparing the forecasted values for periods 253257 with their actual Closevalues on those specific days (Hint: check the actualvalues on https://finance.yahoo.com).

(ii)Calculate the MAPEs (Mean Absolute Percentage Error) of your forecasts in question (i) above andcompare them with the values obtained for your forecasts in Part 1.For each stock, describe which method has yielded a most accurate forecast.

2

Part 3: Regression:

(i)For each stock, use simple regression of stock values versus the time periods to predict its values for periods 1 through 257. In your report, describe how the accuracy of this prediction has been compared to the methods used in Parts 1 and 2 of this project

(ii)Perform a residual analysis of your simple regression to verify whether regression is appropriate to use for each of the given data. In particular, determine:

Whether the residuals are independent

Whether the residuals are homoscedastic

.Whether the residuals are normally distributed by plotting a Normal probability plot of the residuals

Whether the residuals are normally distributed by performing a Chisquared test for Normality of the residuals

.After completing parts 13 and in your report, respond to the following question. Note this question is subjective, and it does not necessarily have only one correct answerat this stage of the course

.Question: Supposethat you have decided to form a portfolio 𝜫(Pi)consisting of the above two stock types (denote a share value of AAPL by 𝑋and that of HON by 𝑌). You are however undecided as to what percentage of your investment should be allocated to the AAPL shares and what percentage should be allocated to HON shares. Let thesepercentages be denoted by P and Q respectively(Obviously, P + Q=100%). In your opinion, what are good values to select for P and Q



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Computer Science

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

Discuss in 500 words or more the differences between and advantages of MAC, DAC, and RBAC.

Use at least three sources. 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.

Copying without attribution or the use of spinbot or other word substitution software will result in a grade of 0.

Write in essay format not in bulleted, numbered or other list format.

Do not use attachments as a submission.

Reply to two classmates’ posting in a paragraph of at least five sentences by asking questions, reflecting on your own experience, challenging assumptions, pointing out something new you learned, offering suggestions.


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