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A source has five letters with following probabilities:P(a1)=0.3,P(a2)=0.2,P(a3)=0.2,P(

A source has five letters with following probabilities:P(a1)=0.3,P(a2)=0.2,P(a3)=0.2,P(a4)=0.15,P(a5)=0.15 These letters are to be coded into binary digits for use on a noiseless channal.It takes 1 second to transmit a 0 and 3 seconds to transmit a 1.Using cut and try techniques,find a code with the prefix condition that minimizes the average time required to transmit a source letter and calculate this minimum average time. (2)Any such code can be represented by a tree in which the length of a branch:is proportional to the time required to transmit the associated digit.Show that for a code to minimize the average transmission time,the probabilities associated with intermediate and terminal nodes must be nonincreasing with length.

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更多“A source has five letters with following probabilities:P(a1)=0.3,P(a2)=0.2,P(a3)=0.2,P(”相关的问题

第1题

The statement of financial position of BKB Co provides the following information:BKB Co ha

The statement of financial position of BKB Co provides the following information:

The statement of financial position of BKB Co prov

BKB Co has an equity beta of 1·2 and the ex-dividend market value of the company’s equity is $125 million. The ex-interest market value of the convertible bonds is $21 million and the ex-dividend market value of the preference shares is $6·25 million.

The convertible bonds of BKB Co have a conversion ratio of 19 ordinary shares per bond. The conversion date and redemption date are both on the same date in five years’ time. The current ordinary share price of BKB Co is expected to increase by 4% per year for the foreseeable future.

The overdraft has a variable interest rate which is currently 6% per year and BKB Co expects this to increase in the near future. The overdraft has not changed in size over the last financial year, although one year ago the overdraft interest rate was 4% per year. The company’s bank will not allow the overdraft to increase from its current level.

The equity risk premium is 5% per year and the risk-free rate of return is 4% per year. BKB Co pays profit tax at an annual rate of 30% per year.

Required:

(a) Calculate the market value after-tax weighted average cost of capital of BKB Co, explaining clearly any assumptions you make. (12 marks)

(b) Discuss why market value weighted average cost of capital is preferred to book value weighted average cost of capital when making investment decisions. (4 marks)

(c) Comment on the interest rate risk faced by BKB Co and discuss briefly how this risk can be managed. (5 marks)

(d) Discuss the attractions to a company of convertible debt compared to a bank loan of a similar maturity as a source of finance. (4 marks)

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第2题

The triangle has been a source of mystery for about thirty years.A.YB.NC.NG

The triangle has been a source of mystery for about thirty years.

A.Y

B.N

C.NG

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第3题

The OSI model has()layers。

A.Four

B.Five

C.Six

D.Seven

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第4题

She has ______ .A.not written any lettersB.much time to write lettersC.no time to write le

She has ______ .

A.not written any letters

B.much time to write letters

C.no time to write letters

D.a little time to write letters

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第5题

The city has a population of over()

A.five hundred million

B.five hundred millions

C.five hundreds million

D.five hundred millions people

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第6题

What informational source used to measure performance has the disadvantages of being

A.standardized tests

B.statistical reports

C.personal observation

D.written reports

E.oral reports

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第7题

Brazil()the World Cup five times.

A.has won

B.is winning

C.won

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第8题

What type of information source allows for feedback, is fast, but historically has a

A.oral reports

B.written reports

C.statistical reports

D.personal observation

E.standardized tests

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第9题

The rate of absentelsm has()by 5% In the past fIve years.

A.deduced

B.power

C.balanced

D.reduced

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第10题

A.It works on wet surfaces.B.It's stronger than synthetic glue.C.It's a nutritious sou

A.It works on wet surfaces.

B.It's stronger than synthetic glue.

C.It's a nutritious source of protein.

D.It has been used successfully by doctors.

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