Theories of psychology are, in many ways, a product of the context that they come from. We have discussed the role of culture, cohort, and environment in identifying factors that create differences in behavior and thought. A robust theory of psychology can address universal (culture free) and individual (culture specific) differences in explaining the HOW and WHY of behavior. For this assignment, you will be addressing the following cultural scenarios and will need to evaluate psychological theories from this new point of view:  

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Television images, movies and glamour magazines promote the elderly as role models. Your sense of self- esteem is tied to how “old” you are perceived as, with success in work and relationships based on age related criteria. Younger members of a group are marginalized and clear messages about the value of age are communicated with even very young members of society (children). There are industries in your society dedicated to helping provide society with valued markers of age (think hair dye and plastic surgery to age individuals). Imagine what your experiences would have been growing up and how your sense of identity would be like as a college student.

For this assignment, please reflect on what ways such a situation might affect their personal experiences. (What would be different, specifically?) Next, speculate how the theories in the field of psychology might be changed as a result. Describe this in terms of at least three approaches or theories in psychology (Freud, Piaget, Social Learning, Milgram, Zimbardo, etc.) You will need to discuss why these changes would impact their experiences and the world at large (ex., would Freud be more widely accepted without the changes in access to education for women in the 30s and 40s that gave women more status and would current theories of personality be different due to this change. Think about if these changes in the world would have altered the theories of psychology and what a specific alternate theory would look like.

Students will need to discuss this hypothetical change using the
WHAT, HOW, AND WHY
format.
o
WHAT is different based on the change (in terms of your personal experiences and
culture).
o
HOW is psychology different? (What in the research that we have discussed holds
true and what does not? Would we still find the same results? Would research or
theories look different? Would a different cultural norm produce a different
explanation of thought and behavior and what does that say about the role of culture
in how we explain behavior or thought?)

1- Classify the power switches according to the ability to control

2- What are the conditions of turning on the thyristor. State the methods of turning it off. What is the main difference between thyristors and GTO

3- Describe the behavior of TRIAC

4- Derive the expressions of the average load voltage and current in single-phase half-wave controlled rectifiers and resistive load. Draw the waveforms of supply voltage, output voltage, output current, thyristor voltage and thyristor current

5- In a single-phase half-wave controlled rectifier and resistive load, it is desired to get an average load voltage of 80 V. Determine the firing angle if the ac supply voltage is 220 V. If the load resistance is 30 Ω, calculate the average load current and design the thyristor. The volt-drop across the device Von during conduction is 2V. Determine the average conduction losses.

6- In a single-phase half-wave controlled rectifier and R-L load it was found that conduction angle of the thyristor is 160o when the firing angle is 50o. Calculate the average load voltage if the circuit is supplied from a 140 V ac source. Draw the waveforms of supply voltage, output voltage, output current and thyristor voltage.

7- In a single-phase half-wave rectifiers with R-L load and a freewheeling diode FWD, calculate the average load voltage if the firing angle is 30o and the supply voltage is 150 V. Draw the waveforms of supply voltage, output voltage, load current, thyristor current, FWD current and thyristor current.

8- Derive the expressions of the average load voltage and current in single-phase full-wave controlled rectifier with center tapped transformer and resistive load. Draw the waveforms of supply voltage, output voltage, output current, and thyristor current.

9- In a single-phase full-wave controlled rectifier with center tapped transformer and resistive load, it is desired to get an average load voltage of 140 V. Determine the firing angle if the ac supply voltage is 200 V. If the average load power is 700 W, calculate the average load current and design the thyristor. The volt-drop across each thyristor Von during conduction is 1.8V. Determine the average conduction losses of the thyristors.

10- Derive the expressions of the average load voltage and current in single-phase full-wave controlled rectifier (bridge rectifier) and resistive load. Draw the waveforms of supply voltage, output voltage, output current and thyristor current.

11- In a single-phase full-wave controlled rectifier (bridge rectifier) and resistive load, it is desired to get an average load voltage of 50 V. Determine the firing angle if the ac supply voltage is 150 V. If the average load power is 300W, calculate the average load current and. Design the thyristor.

12- Derive the expressions of the average load voltage in single-phase full-wave controlled rectifier (bridge rectifier) and highly inductive load. Draw the waveforms of supply voltage, output voltage, output current and thyristor current.

13- In a single-phase full-wave controlled rectifier (bridge rectifier) and resistive load, it is desired to get an average load voltage of 90 V. Determine the firing angle if the ac supply voltage is 230 V. If the average load power is 270 W, calculate the load current and. Design the thyristor.

14- The single-phase half wave rectifier has a purely resistive load of R and the delay angle is α=π/2, determine: ??? , ??? , ????, ????.
Plot : Is , Vs , VL , VT , Ig

Although older Americans are most afraid of crime, it is young people who are more likely to be the actual victims of crime. It seems that older people are more cautious about the people with whom they associate. A national survey showed that 10% of all people ages 16-19 have been victims of crime.† At a high school, a random sample of

n = 65 students

(ages 16-19) showed that

r = 11

had been victims of a crime. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value a small amount and thereby produce a slightly more "conservative" answer.

(a) Do these data indicate that the population proportion of students in this school (ages 16-19) who have been victims of a crime is different (either way) from the national rate for this age group? Use

α = 0.05.

Do you think the conditions

np > 5

and

nq > 5

are satisfied in this setting? Why is this important?(i) What is the level of significance?


State the null and alternate hypotheses.

H₀: p = 0.10; H₁: p < 0.10H₀: p = 0.10; H₁: p > 0.10    H₀: p = 0.10; H₁: p ≠ 0.10H₀: μ = 0.10; H₁: μ ≠ 0.10H₀: μ = 0.10; H₁: μ < 0.10H₀: μ = 0.10; H₁: μ > 0.10

(ii) What sampling distribution will you use? What assumptions are you making?

The standard normal, since np < 5 and nq < 5.The standard normal, since np > 5 and nq > 5.    The Student's t, since np > 5 and nq > 5.The Student's t, since np < 5 and nq < 5.

What is the value of the sample test statistic? (Round your answer to two decimal places.)


(iii) Find (or estimate) the P-value.

P-value > 0.5000.250 < P-value < 0.500    0.100 < P-value < 0.2500.050 < P-value < 0.1000.010 < P-value < 0.050P-value < 0.010

Sketch the sampling distribution and show the area corresponding to the P-value.

(iv) Based on your answers in parts (i) to (iii), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level α?

At the α = 0.05 level, we reject the null hypothesis and conclude the data are statistically significant.At the α = 0.05 level, we reject the null hypothesis and conclude the data are not statistically significant.    At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are statistically significant.At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are not statistically significant.

(v) Interpret your conclusion in the context of the application.

There is sufficient evidence at the 0.05 level to conclude that there is a difference from the national average for the population proportion of crime victims.There is insufficient evidence at the 0.05 level to conclude that there is a difference from the national average for the population proportion of crime victims.    

(b) Find a 90% confidence interval for the proportion of students in this school (ages 16-19) who have been victims of a crime. (Round your answer to three decimal places.)

(c) How large a sample size should be used to be 95% sure that the sample proportion p̂ is within a margin of error

E = 0.04

of the population proportion of all students in this school (ages 16-19) who have been victims of a crime? Hint: Use sample data p̂ as a preliminary estimate for p. (Round your answer up to the nearest student.)
students

Although older Americans are most afraid of crime, it is young people who are more likely to be the actual victims of crime. It seems that older people are more cautious about the people with whom they associate. A national survey showed that 10% of all people ages 16-19 have been victims of crime.† At a high school, a random sample of

n = 66 students

(ages 16-19) showed that

r = 10

had been victims of a crime. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value a small amount and thereby produce a slightly more "conservative" answer.

Do you think the conditions

np > 5

and

nq > 5

are satisfied in this setting? Why is this important?

(i) What is the level of significance?

State the null and alternate hypotheses.

H₀: μ = 0.10; H₁: μ ≠ 0.10H₀: p = 0.10; H₁: p < 0.10    H₀: μ = 0.10; H₁: μ > 0.10H₀: p = 0.10; H₁: p > 0.10H₀: μ = 0.10; H₁: μ < 0.10H₀: p = 0.10; H₁: p ≠ 0.10

(ii) What sampling distribution will you use? What assumptions are you making?

The standard normal, since np < 5 and nq < 5.The Student's t, since np > 5 and nq > 5.    The standard normal, since np > 5 and nq > 5.The Student's t, since np < 5 and nq < 5.

What is the value of the sample test statistic? (Round your answer to two decimal places.)

(iii) Find (or estimate) the P-value.

P-value > 0.5000.250 < P-value < 0.500    0.100 < P-value < 0.2500.050 < P-value < 0.1000.010 < P-value < 0.050P-value < 0.010

Sketch the sampling distribution and show the area corresponding to the P-value.

(iv) Based on your answers in parts (i) to (iii), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level α?

At the α = 0.05 level, we reject the null hypothesis and conclude the data are statistically significant.At the α = 0.05 level, we reject the null hypothesis and conclude the data are not statistically significant.    At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are statistically significant.At the α = 0.05 level, we fail to reject the null hypothesis and conclude the data are not statistically significant.

(v) Interpret your conclusion in the context of the application.

There is sufficient evidence at the 0.05 level to conclude that there is a difference from the national average for the population proportion of crime victims.There is insufficient evidence at the 0.05 level to conclude that there is a difference from the national average for the population proportion of crime victims.    

(b) Find a 90% confidence interval for the proportion of students in this school (ages 16-19) who have been victims of a crime. (Round your answer to three decimal places.)
lower limit    upper limit    
(c) How large a sample size should be used to be 95% sure that the sample proportion p̂ is within a margin of error

E = 0.05

of the population proportion of all students in this school (ages 16-19) who have been victims of a crime? Hint: Use sample data p̂ as a preliminary estimate for p. (Round your answer up to the nearest student.)
students

write Issues, Rules, Analysis and conclusion on NLRB v. Babcock & Wilcox

what is the jurisdiction and standing for the Boeken v. Philip Morris, Inc case?

Write dt/ds with constant H in terms of T,P,V.

Contrast when the A/P and D/V axes are specified in Nematodes and Fruitflies.