Human computer interaction

An online air ticket reservation company is experimenting with a new interactive user interface design for its customers. Study any leading online air ticket reservation system to understand this interface and using it, give examples of any three social impact of interface design for following elements. You can use screenshots to elaborate your example.

1. Describe the new system and its benefits
2. Outline the development process

41

It appears that all of the firms involved with producing green energy devices such as solar cells, wind power and high-speed bullet trains need government tax breaks and subsidies to survive. Billions of taxpayer dollars are given to such firms every year.

Conclusion: These tax breaks and subsidies for these new technologies always guarantee more efficiency, innovation, and lower costs to consumers.     

True or False

42

If a firm increased inputs (e.g. labor, capital) by 30 percent and got a 5 percent increase in output, then it should feel O.K. because they will enjoy the benefits of economies of scale.      

True or False

43

A command economies usually operate government-run monopolies like government-run healthcare or government-run state companies.

Multiple Choice

• It is false – command economies allow competition to exist

• It is false – command economies have no government-run monopolies

• This statement can only be true if there is also heavy taxation in the economy

• This statement is true

44

The concept of diminishing marginal utility says that the satisfaction level of human beings drop as we get more of something. Because of this, we place less value in the good or service and human beings will then demand a lower price for additional units.

True or False

1. The person known to history as "Typhoid Mary" was identified by public health officials as a source of typhoid fever, although she reported she had never had typhoid fever. Which of the following is the most accurate description of her in this scenario? A) human carrier B) contact carrier C) reservoir D) both a human carrier and a reservoir E) a reservoir but not a carrier

2. Which of the following mucous membranes has cilia to aid shedding? A) urinary system B) lower respiratory system C) mouth D) nasal cavity E) mouth, nasal cavity, and urinary system

3. Which of the following proteins of the complement cascade is an opsonin?  A) factor P B) MAC C) C3a D) C5a E) factor B

4. A person produces a mutated C3 protein resulting in C3a failing to stick, but enzymatic function is not affected. Complement activation in this individual would result in which of the following? A) MACs would form but inflammation would not occur. B) Phagocytosis would be facilitated but chemotaxis by phagocytes would be reduced. C) Phagocytes would be attracted to the site of infection but phagocytosis would be impaired. D) MACs would not form. E) Phagocytes would not be attracted to the site of infection.

Q2. Cell division cycle mutations render the mutants unable to continue the cell cycle. This phenotype creates a paradox where mutant cells must also be grown in the lab to further identify the gene and study the role of the protein. How do you think this problem can be solved?

Q5. Although mutations have been observed in many different genes, they have not been isolated in histones. Why does this seem reasonable? If one wanted to produce antibodies to histones, would it be an easy task? Explain your answer.

Q6. It is possible to take the DNA of a gene from any source and place it on a chromosome in the nucleus of a yeast cell. When you take DNA of a human gene and put it into a yeast cell chromosome, the yeast cell can synthesize the human protein. However, when you remove the DNA for a gene normally present on yeast mitochondrial chromosomes and put it on a yeast chromosome in the nucleus, the yeast cell cannot synthesize the correct protein, even though the gene comes from the same organism. Explain. What would you need to do to ensure that such a yeast cell could make the correct protein?    

Q9. Describe the general relationship that may exist between mutations and cancer.

1. A severe disease that is inherited as an autosomal recessive trait is more likely to skip generations in a pedigree than an autosomal recessive trait that cuases a harmless phenotypic variant because

a) all autosomal recessive traits skip generations

b) a person with the harmless variant is less likely to reproduce than a person with the disease

c) a person with an autosomal recessive disease is less likely to be well enough to reproduce than a person with a harmless trait variant

d) all inborn errors of metabolism are are dominant

2. In a human pedigree that traces the inheritance of albinism, a filled square represents a ______

a) male with albinism

b) female with albinism

c) heterozygous male

d) heterozygous female

3. In a human pedigree that traces the inheritance of sickle cell disease, a half-filled circle represents a ____

a) male with the disease

b) female with the disease

c) heterozygous male

d) heterozygous female

4. Which of the following genotypes is homozygous?

a) RrYY

b) RRYY

c) RryY

d)RrYy

5. For two traits A and B with two alleles each, the genotypes of the gametes that a heterozygote would produce are_____

a) AB,Ab,aB,ab

b) AB,ab

c) Ab and ab

d) AB, ab, Ab

Case study 5
Metro company, for example in Egypt, attracts a huge number of candidates for employment every year.
The company organizers require methods to recruit new staffs. Railway transport in Egypt has declined
over the past decade in terms of both infrastructure availability and transport capacity, especially in the area
of freight transport. This is due to:
• Competition from road haulage;
• Longer delivery times due to the priority given to passenger transport;
• Complicated formalities;
• Cross-border differences in infrastructure and staffing.
Ms. Ramaa is nominated as a human resource manager in one of the largest rail Service Company in the
Egypt. She has to manage the work of the department and implement the functions of Human Resources
management. She has to follow all rules of the company without discrimination.
Questions:
1. Is retaining employees an issue only for rail Service Company in the Egypt? Discuss.
(3 marks- Answer in 75-100 words)
2. Examine the challenges that Ms. Ramaa would face in retaining talented employees.
(3 marks- Answer in 75-100 words)
3. Suggest and explain any four activities which rail Service Company in Egypt can implement in
retaining their employees. (4 mark

Part I: Origins of Psychology

Within psychology, there are several perspectives used to describe, predict, and explain human behavior. The seven major perspectives in modern psychology are psychoanalytic, behaviorist, humanist, cognitive, neuroscientific/biopsychological, evolutionary, and sociocultural. Describe the perspectives, using two to three sentences each. Select one major figure associated with one of the perspectives and describe his or her work in two to three sentences. Type your response in the space below.

Part II: Research Methods

Describe research methods used in psychology by completing the following table. Then, select two of the research methods, and compare and contrast them. Your response must be at least 75 words.

Describe one ethical issue related to research. Why is informed consent necessary for ethical research?

Part III: The Brain

Studying the functions and elements of the brain is essential to understanding human behavior.

1.      Why do psychologists study twins? Why do psychologists study children who have been adopted? What can be learned from these types of studies?

2.      What are the functions of neurotransmitters and hormones? How do they influence the brain and behavior?