The relative acidity between carboxylic acids has been used as a means for determining the electron-withdrawing or electron-donating abilities of substituents.
a) The pKa of phenyl acetic acid is 4.31, making it a stronger acid than acetic acid. Is the Ph group electron-donating or electron-withdrawing in this case?
b) The Ph group is a mild o,p-director in EAS reactions. Is the Ph group electron-donating or electron-withdrawing? If the answer contradicts your answer from part a, provide an explanation.
c) 4-Methoxybenzoic acid is a weaker acid than benzoic acid, yet methoxyacetic acid is a stronger acid than acetic acid. Rationalize these seemingly contradictory results.
d) Methyl groups are usually considered electron-donating groups. Propanoic acid is a weaker acid than acetic acid. Is that result in agreement?
In: Chemistry
We have discussed the major molecules in the cell (carbohydrates, lipids, proteins, nucleic acids). You are going to chose one of these molecules and write a convincing argument for why it should be considered the most important of the four. In your argument you must include:
1) A description of the function of all four molecules and why your choice is the most important.
2) A description of the structure of the molecule you have chosen.
3) Four processes/functions that involve this molecule. You do not have to provide each detail of the process but you should describe the general function or process.
4) How this molecules interacts or depends on at least two of the other molecules
In: Biology
1.Human cells can produce perhaps as many as 100,000 different proteins, yet the human genome has only about 25,000 genes. How can you explain this? Name 4 responsible mechanisms.
2.True or false (provide explanation)
a)The consequence of transcription errors is less severe than that
of an error in replication.
b) The loss of the p53 protein in certain cancers makes them more resistant to irradiation therapies and to several chemotherapies, which would normally kill cancer cells by inducing apoptosis or stopping the cyclecellular cell.
In: Biology
Crime Prevention: Stop Human Trafficking
Human trafficking affects over 40 million people each year. It is a sad crime that reaches vulnerable populations, such as children. Many have a strong desire to see this crime stopped. One of those is Tom Sabo, who was very disturbed by this issue after attending a human trafficking symposium. He wanted to put his text mining skills into action.
Using text analytics and AI, he was able to create useful models that law enforcement could use. One model pulled together several text-based data sources: police reports, newspaper articles, recent prosecutions, and a shady classified advertising website. The goal was to find relevant patterns in the text that Sabo could then incorporate into a predictive analytics model.
Sabo used the police statements from a specific New York
jurisdiction. He then linked this data to other events outside of
the state and even outside of the country.
He saw these trends related not only to who was involved, but also, where the events were happening.
This model was subsequently used to identify these situations quicker and allowed law enforcement to act.
Questions:
1. Please identify three most typical BI related technologies used by Tom Sabo in this case study, and briefly discuss how they help Tom in data analysis. [6 marks]
2. As discussed in our lecture, the financial departments of many companies also do predictive analytics. Compare the analytics done by such financial departments and the one by Tom Sabo, what differences can you identify in terms of the technologies applied by them? [4 marks]
In: Computer Science
Assignment 3: Human Resource Project Plan.
You have recently been appointed head of human resources and are now in charge of managing a small team. Your next project is to revamp the compensation and benefits package employees are receiving at your company. Design a plan for the human resource project without the use of MS Project or similar software. Note: You will have to make assumptions or create fictitious data for this assignment. Be clear about these assumptions and data for your professor to follow along.
1. Construct a project charter to revamp the compensation and benefits package.
2. Design a communication plan for the project.
3. Define the scope of the project.
4. Create a work breakdown structure including numbered components. Submit your WBS by creating a table inside your assignment.
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In: Operations Management
In: Nursing
Suppose the lengths of human pregnancies are normally distributed with muμequals=266266 days and sigmaσequals=1616 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with mu equals 266μ=266 days and sigmaσequals=1616 days. The area to the leftleft of Upper X equals 240X=240 is 0.05210.0521. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) A. The proportion of human pregnancies that last moremore than nothing days is nothing. B. The proportion of human pregnancies that last lessless than nothing days is nothing. X font size decreased by 3 266266 font size decreased by 3 240240 A normal curve has a horizontal axis labeled "X" and two horizontal coordinates, 240 and 266. The curve's peak is near the top of the graph at horizontal coordinate 266. Two vertical line segments run from the horizontal axis to the curve at 240 and 266. The area under the curve to the left of 240 is shaded. Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) A. The probability that a randomly selected human pregnancy lasts lessless than nothing days is nothing. B. The probability that a randomly selected human pregnancy lasts moremore than nothing days is nothing. (b) The figure to the right represents the normal curve with mu equals 266μ=266 days and sigmaσequals=1616 days. The area between xequals=280280 and x equals 295x=295 is 0.15580.1558. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals. Use ascending order.) A. The proportion of human pregnancies that last between nothing and nothing days is nothing. B. The proportion of human pregnancies that last less than nothing or more than nothing days is nothing. X font size decreased by 3 266266 font size decreased by 3 280280 font size decreased by 3 295295 A normal curve has a horizontal axis labeled "X" and three horizontal coordinates, 266, 280, and 295. The curve's peak is near the top of the graph at horizontal coordinate 266. Three vertical line segments run from the horizontal axis to the curve at 266, 280, and 295. The area under the curve between the vertical line segments at 280 and 295 is shaded. Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals. Use ascending order.) A. The probability that a randomly selected human pregnancy lasts between nothing and nothing days is nothing. B. The probability that a randomly selected human pregnancy lasts less than nothing or more than nothing days is nothing.
In: Advanced Math
Omega Company's accountants have just completed the income statement and balance sheet for the year and have provided the following information (dollars in thousands):
| INCOME STATEMENT | |||||||
| Sales revenue | $ | 20,730 | |||||
| Expenses | |||||||
| Cost of goods sold | $ | 9,170 | |||||
| Depreciation expense | 3,100 | ||||||
| Salaries expense | 4,080 | ||||||
| Rent expense | 2,940 | ||||||
| Insurance expense | 930 | ||||||
| Utilities expense | 920 | ||||||
| Interest expense on bonds | 1,000 | ||||||
| Loss on sale of investments | 750 | 22,890 | |||||
| Net loss | $ | (2,160 | ) | ||||
| SELECTED BALANCE SHEET ACCOUNTS | |||||||
| Current Year | Prior Year | ||||||
| Merchandise inventory | $ | 89 | $ | 69 | |||
| Accounts receivable | 457 | 531 | |||||
| Accounts payable | 246 | 216 | |||||
| Salaries payable | 35 | 19 | |||||
| Rent payable | 7 | 14 | |||||
| Prepaid rent | 15 | 18 | |||||
| Prepaid insurance | 30 | 10 | |||||
Other Data:
The company issued $25,000, 8 percent bonds payable at par during the year.
Required:
1. Prepare the cash flows from operating activities section of the statement of cash flows using the direct method. (List cash outflows as negative amounts. Enter your answers in thousands.)
2. Prepare the cash flows from operating activities section of the statement of cash flows using the indirect method. (List cash outflows and losses as negative amounts. Enter your answers in thousands.)
In: Accounting
To what extent are human beings free and to what extent are their decisions and actions determined?
In: Other
Revise Smith/Marx/Weber/Durkheim Khaldun's theory of human nature and their difference?
In: Economics