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Write the problem in standard form. Identify slack/surplus variables. The optimal solution of the above LP model is (180/7, 150/7). What are the values of the slack and surplus variables at the optimal solution?

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Problem Solving

1. Consider the following linear programming problem:

Min

s.t.

  • Write the problem in standard form. Identify slack/surplus variables. (10 points)
  • The optimal solution of the above LP model is (180/7, 150/7). What are the values of the slack and surplus variables at the optimal solution? (12 points)

 

2.Consider the following linear programming problem:

Max

s.t.

  • Identify the feasible region. (12 points)
  • Are any of the constraints redundant?  If yes, then identify the constraint that is redundant. (10 points)
  • Find all the extreme points – list the value of x1 and x2 at each extreme point. (6 points)
  • What is the optimal solution? (5 points)

 

3. RVW (Restored Volkswagens) buys 15 used VW’s at each of two car auctions each week held at different locations. It then transports the cars to repair shops it contracts with.  When they are restored to RVW’s specifications, RVW sells 10 each to three different used car lots.  There are various costs associated with the average purchase and transportation prices from each auction to each repair shop.  Also there are transportation costs from the repair shops to the used car lots.  RVW is concerned with minimizing its total cost given the costs in the table below.

  • Given the costs below, draw a network representation for this problem. (10 points)
  Repair Shops     Used Car Lots
  S1 S2     L1 L2 L3
Auction 1 550 500   S1 250 300 500
Auction 2 600 450   S2 350 650 450
  • Formulate this problem as a linear programming model. (15 points)

(Note: You do not need to solve the model.)

 

 

Solute A has a K = 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01M solution containing A in water is extracted one time with 400 mL chloroform, what fraction will be extracted? For the same solute, what fraction will be extracted if 5 extractions with 80 mL chloroform each are used (instead of one 400 mL extraction)?

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Analytical Chemistry 2

HW #3 for Chem 318      Due: May 1, 2023

  1. Solute A has a K = 2.5 for an extraction between water (phase 1) and chloroform (phase 2). If 100 mL of a 0.01M solution containing A in water is extracted one time with 400 mL chloroform, what fraction will be extracted? For the same solute, what fraction will be extracted if 5 extractions with 80 mL chloroform each are used (instead of one 400 mL extraction)?
  2. A solute is separated on a column (length: 25 cm) with a peak at 25.5 minutes (retention time) and the baseline peak width of 0.7 minutes. Calculate the number of theoretical plates and the theoretical plate height of this column.
  3. Two compounds (compound 1 and compound 2) are separated on a column with retention time being 14.6 minutes and 16.8 minutes, respectively. The baseline peak width of the two peaks is 0.8 minutes and 1.0 minutes, respectively. Are these two compounds separated completely? Why or why not?
  4. Describe the factors that contribute to the chromatographic peak broadening (hint: Why bands spread?).
  5. List the types of liquid chromatography (categorized based on separation principles) and briefly describe the principles used for separation for each type.
  6. What are the desirable properties for the immobilized liquid stationary phase in a gas-liquid chromatographic column?
  7. What characteristics does an ideal detector for gas chromatography have?
  8. Briefly describe the principle of operation for the following gas chromatographic detectors: 1).Flame Ionization Detector (FID); 2).Thermal Conductivity Detector (TCD); 3).Electron-Capture Detector (ECD).
  9. What advantages does HPLC possess vs GC?
  10. List the components of an HPLC instrument.
  11. Briefly describe the principle of operation for the following HPLC detectors: 1).UV absorbance detector; 2).Fluorescence detector; 3).Refractive-index detector; 4).Electrochemical detector; 5).Mass spectrometric detector. (In addition to going through the slides, you may need to read the textbook and other reference books to finish this question).

 

 

Create the corresponding html and php files so that a user can delete Jane Doe from the database from a web browser.

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IT/BIFX 530 Applied Database Systems

Consider the banking example we used in the SQL in–class exercises:

  • branch (branch_name, branch_city, assets)
  • customer (customer_name, customer_street, customer_city)
  • account (account_number, branch_name, balance)
  • loan (loan_number, branch_name, amount)
  • depositor (customer_name, account_number)
  • borrower (customer_name, loan_number)

Write PHP code for the following problems:
1. From the previous PHP/SQL Lab 1, you inserted the customer, Jane Doe, into the database. She decided to move so her street and city need to be updated. Create the necessary php files to update Jane Doe’s street to “404 Error Place” and city to “Nowhere” from a web browser. After the update, display all of the customers from the web.
2. We now need to remove Jane Doe from the database. Create the corresponding html and php files so that a user can delete Jane Doe from the database from a web browser. After the deletion, display all of the customers from the web.

Provide an opportunity to study a particular topic in depth. Show evidence of independent investigation. Critically consider and combine relevant theories and, where appropriate, suggest alternatives.

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SBS Dissertation Module (MAN00111M) 2022–2023

The Purpose of the Dissertation Research Project
The dissertation is the final stage of the Master’s degree and provides you with the opportunity to both gain and show that you have gained the necessary skills and knowledge to organise and conduct a research project. It should demonstrate that you are skilled in conceptualizing, designing, managing and delivering a research project, involving: identifying an area, or areas, suitable for research and setting appropriate research objectives; identifying and critically reviewing relevant literature within the topic area; selecting an appropriate research methodology; locating, collecting, organising and critically analysing relevant primary and/or secondary data, drawing on relevant authoritative literature in the field; drawing conclusions; and, if appropriate, making relevant recommendations and indications of areas for further research.

Aims of the Dissertation Module
The aims of the dissertation research Module are to:
• Put into practice theories and concepts learned on the Master’s Course.
• Provide an opportunity to study a particular topic in depth.
• Show evidence of independent investigation.
• Critically consider and combine relevant theories and, where appropriate, suggest alternatives.
• Enable interaction with practitioners (where appropriate to the chosen topic).
• Show evidence of ability to plan and manage a research project within deadlines.

Learning Outcomes
Successful completion of the Module will demonstrate that you are able to:
● Undertake an academic research project, involving defining, designing and delivering an academically rigorous piece of research
● Understand the relationships between the theoretical concepts and models and their application in specific situations
● Show evidence of a deeper understanding of your chosen subject area
● Apply knowledge of research philosophy and methods
● Critically analyze significant bodies of relevant literature in the chosen topic area
● Undertake active research involving collection of primary and/or secondary data

● Engage with ethical issues in undertaking academic research
● Understand the process and decisions to be made in managing a project within strict deadlines and appreciate the significance of and gain experience of designing an appropriate research plan
● Appreciate the practical implications and constraints of both practical academic research and your specialist topic area
● To demonstrate a more rigorous and critical thinking perspective and skills, particularly in the selection and review of relevant literature, analysis of data, consideration of and engagement with different conceptual and knowledge perspectives, and preconceptions and assumptions of self and others
● To learn strategies of, gain experience and develop skills in writing up a well– presented and substantial piece of business, management and organizations academic research, in a way that demonstrates academic rigour and credibility, and is both persuasive and convincing; of ‘learning the craft of academic writing’
● Critically reflect on research knowledge and skills achieved and their relationship to future development and employability.

Explain How Heart Disease is a Public Health Issue.

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Discussion

Explain How Heart Disease is a Public Health Issue.

Create an opening sequence for a hypothetical documentary film on a famous public figure.

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Final Project – Documentary Film Opening Credits

Project: Create an opening sequence for a hypothetical documentary film on a famous public figure. You will use still photos or video, animated text, logos, animation, screen captures, score music, voice overs, and sound elements to create a compelling sequence. You may utilize ANY of the skills from the many projects completed over the course of the semester.

Main Research Source: NY TIMES Obituaries
The NY Times Obituaries section is updated daily with short documentary/ journalistic entries for famous and well-known public figures from musicians and artists to political figures and scientists. Use this resource as your main research to decide on your sequence material.

complete your second of two reports as part of the Data Understanding phase of the Crisp DM process: a Data Exploration Report.A data exploration report describes the results of your data exploration, including first findings or initial hypotheses, and their impact on the remainder of the project.

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Tableau workbook needed

For this assignment, you will complete your second of two reports as part of the Data Understanding phase of the Crisp DM process: a Data Exploration Report.A data exploration report describes the results of your data exploration, including first findings or initial hypotheses, and their impact on the remainder of the project. Include the relevant measures, visualizations, and statistics in this report that are needed for all univariate and bivariate analyses.

Data Source: Tweets

Requirements:

  • Using Tableau (and Excel if needed), conduct exploratory data analysis to complete the Data Exploration Report report as demonstrated in the Chapter 5 MyEducator videos and in class
  • For your Tableau workbook, select the “Extract” option for the connection
  • The Label: use RetweetCount as your label
  • The Features:
    • Include all features in the data set EXCEPT Day, StateCode, City, and text
    • For Country, State:
      • Choose only one of these location features. No need to analyze both of them for this assignment
      • Also, just select 4 or 5 of the most common values for the ANOVA (for example, choose either the 4 or 5 most common states OR countries).
    • For Language: just select the 4 or 5 most common values for the ANOVA

Deliverables: submit the following here in Canvas:

  • The Data Exploration Report as either a word of pdf file (note you may use the template provided in the additional resources section of this module or create your own document for this, provided it contains all of the necessary information)
  • Your .twbx file containing your visualizations and calculated fields used to complete the report
  • Your Excel file (if used) to complete the report

If the response variable is (sorted by treatment and block), analyze the results. Is there a significant main effect at treatment group? Is there a significant block effect?

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Stat 490 Group project

Due 04/26

In experimental design, designing an experiment is as important as analyzing the results. Through the semester we have learned 4 ways to design an experiment

  1. Design an experiment that is BIBD.
  2. Design an experiment that is an optimal design.

For these two types of designs you need to use R language to help you unless for simple cases. Even for the same input, you may end up different designs if you rerun the code. For example, the runs in the same treatment group may end up with different blocks. Or you may end up with different subset of the total runs that is still optimal.

  1. Design a blocked experiment with confounding structure.
  2. Design a fractional experiment with aliases structure.

For these two types of designs you can use either R or Excel to help you design the experiment. With the same confounding structure, same aliases structure, you will end up with the same design.

In this group project, you are asked to design 4 experiments and analyze the results. There is an excel file called “group_response.csv” on canvas, with two variables  and  in it. These will be the response variables for your analysis below.

Experiment 1

  1. Design a BIBD that has 6 treatment groups and 10 blocks. What is the number of runs in each treatment group? What is the number of runs in each block? What is the value of ?
  2. If the response variable is (sorted by treatment and block), analyze the results. Is there a significant main effect at treatment group? Is there a significant block effect?
  3. Analyze the residual to check whether there are any potential concerns about the validity of the assumptions.

Experiment 2

  1. Suppose that factor A has 3 levels, factor B and C each has 2 levels. Assuming you only have budget to have 30 runs, design a D-optimal experiment with these 3 factors such that a model with all first order term and second order term for A can be estimated, and there are 3 replicates in each treatment combination.
  2. If the response variable again is (sorted by treatment A, B, C), analyze the results. Is there a significant main effect at factor A, B or C?
  3. Have appropriate interaction plots and explain whether the interaction is significant or not. Develop the final regression model and have relevant contour plot from your final model.
  4. Analyze the residual to check whether there are any potential concerns about the validity of the assumptions.

Experiment 3

  1. Design a blocked experiment. Choose two three order or higher order interactions to be confounded with the blocks. To choose the confounded interaction terms, use the names from every member’s name. Pick one distinct letter (A-E) from each person’s name and form the interaction.
  2. If the response variable is (sorted by the order from the output from conf.design() function, that is the order of Blocks, E, D, C, B, A), analyze the results. Identify the significant factors and develop your model.
    1. Be careful that when you run Yates analysis the data should be in standard order, while the output from conf.design() function is not in standard order.
  3. Is there a significant block effect?
  4. Write down the complete confounding structure. Confirm the confounding structure using SS.
  5. Analyze the residual to check whether there are any potential concerns about the validity of the assumptions. Analyze dispersion effect if there is any.

Experiment 4

  1. Design a To choose the generators for the design, use the names from every member’s name. Pick one distinct letter (A-G) from each person’s name and form the generator.
  2. If the response variable again is , analyze the results. Identify the potential significant factors and develop your model.
    1. Use the same order as your data in experiment 3, that is you can just add two more factors to your experiment 3 data using the generators you have
    2. Be careful that conf.design() function is based on 0/1 coding, while defining relation is based on -1/1 coding.
  3. Write down the aliases structure for the main effects and two order interactions (ignore higher order interactions) and confirm the resolution of the design.
  4. Analyze the residual to check whether there are any potential concerns about the validity of the assumptions. Analyze dispersion effect if there is any.

What do you consider to be the two most interesting aspects of the chapter and why? Make sure you relate those most interesting aspects to a current event, or trend in policing.

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Criminal Justice Question

You will write a 200-word critical essay on each chapter. Each power point is a different chapter. There are 6 chapters in total. It will be a minimum of 1,200 words. The following chapters are attached below; Chapters 7-12. This assignment is very easy, if you have read the chapters as required. You can also do research on each powerpoint to add more to that chapter. Please read the following instructions thoroughly:

Write a 200-word critical essay on each chapter/unit addressing the question at the end below.

Question: What do you consider to be the two most interesting aspects of the chapter and why? Make sure you relate those most interesting aspects to a current event, or trend in policing.

Whether you are for or against an individual’s right to burn the flag, do you think an amendment to the Constitution to prohibit flag burning would be ratified by the states? Why or why not?

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Volunteer Your Time / burning flag

(20 points)

In this activity, you will choose a way to volunteer your time to improve your community, do some volunteer work, and then write about the results.

 

1. Choose a way to help.

Decide how you want to help your community. Think about what matters most to you. Is it helping the poor? Or maybe you want to help support an important political cause that interests you. Do you belong to a religious or ethnic group that could use help in the community?

Make a list of the groups or organizations that interest you personally:

 

2. Figure out your special talent.

How can you help? Are you a talented artist? Maybe you could help print signs for a rally or paint a mural at your community center. Do you make the best pancakes in the world? Volunteer to organize a pancake breakfast at your YMCA or place of worship. Whatever it is that you’re best at, figure out a way to use that talent to help the group or organization you’re interested in.

Make a list of your particular talents and think about how you can use them in your volunteer work:

Talent Potential use

 

3. Make contact.

Contact the group you intend to help and discuss your plan. Ask any questions you may have about the group’s operations, or about the process you would need to follow as a volunteer. Find out if there are certain times when you may be more needed than others, and try to make yourself available.

4. Make a difference.

Get out there and help! Now that you’ve figured out who to help and how to do it, it’s time to make it happen! Set aside some time after school or during the weekend to put your volunteer work into action. As you work, pay attention to how you interact with the organization you’re working for, the other volunteers you’re working with, and any members of the community you interact with as you work.

Make a list of the names of some of the people you meet while volunteering. Are they coworkers, bosses, or people from the community?

Name Who are they?

 

Consider flag burning as an expression of free speech and post your response to the following questions.

  1. Do you think flag burning should be protected as free speech under the First Amendment? Why or why not?
  2. Whether you are for or against an individual’s right to burn the flag, do you think an amendment to the Constitution to prohibit flag burning would be ratified by the states? Why or why not?