Views of management and accountants

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Compare and contrast the views of management and accountants regarding the changes required by the Sarbanes-Oxley Act on internal controls and how these

changes have affected corporations, accounting firms, and investors.

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Systems of resistance

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Define what are the systems of resistance, and provide some understanding by answering the following questions:

What symptoms of resistance to change have you experienced? Have you experienced both active and passive forms? Have you experienced them as a resistor

yourself (as a recipient of change)? Have you experienced them as someone responsible for the management of change (as an initiator of change)?
Which of the various reasons for resisting change do you believe to be the most common? What are your “top three” in this regard?
Which of the various reasons for resisting change do you believe to be the most difficult to deal with (as a manager)? What are your “top three” in this

regard?
When senior managers resist change at the strategic level, they are in a position to cause more damage than employees resisting changes at the operational

level. Have you worked in a company where you believe that management resistance to change may have existed? As a manager yourself, what would you try to do

to prevent this from happening?
Which approach to the management of resistance attracts you? What is the reason for your choice? For example, is it because you think it to be the most

effective or does it also relate to a view that you have about how people should be managed?

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Automatic control engineering question

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1-) Students who design a balance robot for the Digital Control Systems course control the robot they have developed with the negative feedback system shown

in the figure.

Transfer function of the balance robot 𝐺(𝑠) = 1/(𝑠^2*(𝑠+2))

a. A proportional controller, indicated by 𝐺𝑐 (𝑠) = 𝐾 (𝐾> 0), was preferred to control the system. Does this robot stay in balance when the unit step function

is applied to the system’s input? Prove the reason by drawing the root-place-curve graph.

b. This time, it is desired to control the system using a PD, Proportional + Derivative type controller 𝐺𝑐 (𝑠) = 𝐾 (𝑠 + 𝑎) (𝑎, 𝐾> 0). Determine the range that a

robot will receive so that this robot can stay in balance against the unit step input.

c. By taking 𝑎 = 1 on the PD controller in (b), the closed loop system Show the positions of the poles on the graph in the s-plane for 𝐾> 0.

d. The dominant poles of the system using the controller in (c) Calculate the value of the K gain so that it can produce a 52% maximum overhead versus unit

input.

e. In order for this system’s steady state error to be a finite value other than 0, determine an appropriate input and calculate the steady state error to be

generated by the controller in option (c).

2-) As seen on the figure, the polar curve of the control system has been graphed according to 𝑤 ≅ 0

and 𝑤 ≅ ∞ for K = 1. It is known that the given system is a minimum-phase system. In addition, the

table shows the angular frequency of the system, and the reel and imaginer components of the

system at the point is giv

a. Complete the polar curve of this system and obtain the Nyquist diagram.

b. b. Perform stability analysis using the Nyquist graph.

c. Please determine the order of the system by explaining the reason.

d. Please find the gain margin, the phase margin, the gain pass frequency and phase pass

frequency by using Nyquist diagram and the table.

e. Determine the stability of the system using the calculated gain margin and phase margin

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Police Suicide in the United States

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This course is called Research Methodology in Public Safety Administration. The paper requires a topic with some research. Eventually, the topic will
be tied to a complete research paper.
Instructions are attached in a file.

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