9. The price of an item depends on the order quantity:

It costs $40 to place each order. Annual demand is 3,000 units. Carrying cost is 25 percent of the material price.

What is the optimal order quantity, and what would be its annual total cost? Go to at least two decimal places for your intermediate calculations. Round your answers to the nearest whole number.

MATLAB

4. Create two surface plots in the same figure window. Be sure to label the X and Y axes and provide a title for each plot. The top 3D surface plot should use one of the equations

Option 1:Z=sinX+sinY

Option 2:Z=sinX+cosY

Option 3:Z=cosX+cosY

and the bottom 3D surface plot should use one of the equations

Option 1:Z=sinX - sinY

Option 2:Z=sinX - cosY

Option 3:Z=cosX - cosY

For both plots, use a mesh grid with the same range for both the x-axis and y-axis. Use a range of -2π to 2π; the step (increment) of both dimensions of the grid should be 0.25.

Use a menu or listdlg command to allow the user to select which functions to use. Be sure to output which option the user selected. And, use an if statement that, based on the option chosen, creates plots with the correct functions.

Run your program twice with different user input and provide the output for each run.

Suppose a set of students want to create a virtual study groups. The set consists of 86 students on the eastern timezone, and 47 students in non-eastern time zones. Of the students in the eastern timezone, only 12 are not in Boston.

i. Suppose each group is made of 2 students, one in the eastern time zone and one from noneastern timezone. How many possible study groups are there?

ii. Suppose each group is made of 3 students, one in Boston, one in the eastern time zone but not in Boston, and one from the non-eastern timezone. How many groups can we make?

iii.suggest the Boston students form study groups amongst themselves first. The groups must have at most 5 people for optimal studying. He then secures 3 rooms for these groups. Each room can be safely filled by at most 5 study groups. Show if the students can form the groups safely and the groups fit in these 3 rooms, then there must be at least 3 people in each group.

iv. With rooms set, the in-person study groups can begin. However, the Boston students want to let their remote fellows join via a virtual meetings. How many remote students are guaranteed to join the most welcoming in-person group?

show your steps, please

Smart sensor nodes can process data collected from sensors, make decisions, and recognize relevant events based on the sensed information before sharing it with other nodes. In wireless sensor networks, the smart sensor nodes are usually grouped in clusters for effective cooperation. One sensor node in each cluster must act as a cluster head. The cluster head depletes its energy resources faster than the other nodes. Thus, the cluster-head role must be periodically reassigned (rotated) to different sensor nodes to achieve a long lifetime of wireless sensor network. Discuss in detail what are the major attributes required for choosing the optimal cluster head and explain how the choosing of optimal cluster head helps in
extending the lifetime of the wireless sensor networks, rotating the cluster-head role among sensor nodes with suppression of unnecessary data transmissions. ()

A certain advertising company has commissioned a study to determine if a recent advertising campaign is effective for certain age groups. Researchers have created a data file (results.txt) which contains the results attained by the study. The first column is the subject’s name (you may assume there is no whitespace in any name) and the second column indicates if the subject has seen the advertisement in question (Y or y means yes, N or n means no). The third column specifies the subject's age and the last column (the 'score') specifies how favorably the subject views the product being advertised (from 0 to 100 with a score of 100 being most favorable). A example of the file results.txt is attached. You should download this file to a convenient place on your hard drive. Please note that the file is a sample only. Your program should work on any data file that is formatted in a similar way.

results.txt example file -

Bailey           Y 16 68
Harrison         N 17 71
Grant            Y 20 75
Peterson         N 21 69
Hsu              Y 20 79
Bowles           Y 15 75
Anderson         N 33 64
Nguyen           N 16 68
Sharp            N 14 75
Jones            Y 29 75
McMillan         N 19 80
Gabriel          N 20 62
Huang            Y 62 21
Willoughby       Y 58 29
Davis            N 33 65
McGregor         Y 41 55

Your assignment is to prompt the user to enter the full pathname to the data file on disk. If the file does not exist in the specified location, your program should exit with a suitable error message.

The first thing your program should do is output to the screen a copy of the data read in from the disk file. This is known as “echoing” the input data. Your program should then calculate and display the the following results:

 Average score for subjects under 18 who have not seen the ad.

 Average score for subjects under 18 who have seen the ad.

 Average score for subjects 18 to 35 (inclusive) who have not seen the ad.

 Average score for subjects 18 to 35 (inclusive) who have seen the ad.

 Average score for subjects over 35 who have not seen the ad.

 Average score for subjects over 35 who have seen the ad.

Display your results to two places of decimals, and write your program to automatically list your six calculated averages one to a line, in the order above, along with a suitable label for each result.

Finally, your program should calculate and display to two places of decimals the overall average score for all of the subjects surveyed. (Note: Mathematically, this is NOT the average of the six averages you calculated previously).

Warning: There may be no subjects in any given category (such as over 35s who have not seen the ad). If so you cannot calculate the average (because you would get a divide by zero error) so instead of the average for that category you should display “No data to report”.

French Bread Chocolates developed the following quarterly sales forecasting model:

Sales = 8.50 + 0.150 TIME - 2.70 Q1 + 1.20 Q2 + 3.5 Q3

where TIME is time period. (time is zero in the fourth quarter of 2009, time is 1 in the first quarter of 2010 and 2 in the second quarter of 2010 etc.) and Q1, Q2, and Q3 are quarterly dummy variables.

Forecast French Broad Chocolate's sales for each quarter of 2022.

Define reliability, validity, utility and selection ratio. Use these to describe three selection tools that you would recommend in human resource management, also one selection tool that you would not recommend.

Sam's Cat Hotel operates 52 weeks per​ year, 6 days per​ week, and uses a continuous review inventory system. It purchases kitty litter for ​$11.00 per bag. The following information is available about these​ bags:

Demand=80 ​bags/week

Order cost=$55.00​/order

Annual holding cost=40 percent of cost

Desired ​cycle-service level=80 percent

Lead time=5 weeks ​(30 working​ days)

Standard deviation of weekly demand=15 bags

Current ​on-hand inventory is 320 ​bags, with no open orders or backorders.

a. Suppose that the weekly demand forecast of 80 bags is incorrect and actual demand averages only 55 bags per week. How much higher will total costs​ be, owing to the distorted EOQ caused by this forecast​ error?

The costs will be ​$___ higher owing to the error in EOQ. ​(Enter your response rounded to two decimal​ places.)

b. Suppose that actual demand is 50 bags but that ordering costs are cut to only $13.00 by using the internet to automate order placing. However, the buyer does not tell anyone, and the EOQ is not adjusted to reflect this reduction in S. How much higher will total costs be, compared to what they could if the EOQ were adjusted?

The costs will be $____ higher owing to the error EOQ.

ENTERPRISE SYSTEMS AND SUPPLY CHAIN MANAGEMENT

Building a Connected Corporation through Integration

Supply Chain Management

Technologies Reinventing the Supply Chain

CUSTOMER RELATIONSHIP MANAGEMENT AND ENTERPRISE RESOURCE PLANNING

Customer Relationship Management

The Benefits of CRM

Enterprise Resource Planning

Organizational Integration with ERP

Need for research online and identify one software application for ERP and CRM, describe its functionality, features, and any other considerations that an organization must initiate before implementing it in their organization.

Identifying a unique software (multiple if possible)

Find the pH after 15.00 mL of 0.100 M HCl has been added to 25.00 mL of 0.100 M NH3 solution. Assume volumes are additive.

What specific concepts from below do you find the most interesting and/or impactful to Cybersecurity? Explain the concept thoroughly, explain your position (e.g. why is it impactful to the field of Cybersecurity and/or so interesting to you) and provide several examples that support your argument.

Threats and Adversaries (threat actors, malware, natural phenomena)

Common Attacks

Malicious activity detection / forms of attack

Appropriate Countermeasures

Legal issues

Attack Timing (within x minutes of being attached to the net)

Covert Channels

Social Engineering

State, US and international standards / jurisdictions

Understand the interaction between security and system usability and the importance for minimizing the effects of security mechanisms.

Consider the following project.

1. Draw the AON Network Diagram
2. Compute the expected activity time
3. Using the expected activity times, compute the early start, early finish, late start, late finish, and total float for each activity.
4. Compute the probability of completing the critical path in 69 days.

Liquid nitrogen and carbon dioxide can be used as a refrigerant in many food freezing applications. You are assigned by the project manager to investigate and report on the suitability of both liquid nitrogen and carbon dioxide in chilling meat products for the new frozen meat production line. In your report.

Explain the thermodynamics properties that allow nitrogen and carbon dioxide to function as a refrigerant in food freezing applications.