Questions
. The following quote is from Mallet J (2006) What does Drosophila genetics tell us about...

. The following quote is from Mallet J (2006) What does Drosophila genetics tell us about speciation? Trends in Ecology & Evolution 21:386-393

“Studies [in] Drosophila have given insight into the genetic changes that result in reproductive isolation. Here, I survey some extraordinary and important advances in Drosophila speciation research. However, ‘reproductive isolation’ is not the same as ‘speciation’, and this Drosophila work has resulted in a lopsided view of speciation.”

Focus in on the last sentence in this quote and answer the following questions:

a. What is speciation? (4 points)

b. What is reproductive isolation? (4 points)

c. Define species according to the Biological Species Concept (BSC). (4 points)

d. Given the BSC, what does the author mean that speciation and reproductive isolation are not synonymous? (4 points)

e. In any event, species concepts are difficult to deal with. The definitions we have for species do not often work for all species. Give an example of how the Biological Species Concept “breaks down” in some cases. (4 points)

In: Biology

Consider a portion of monthly return data (In %) on 20-year Treasury Bonds from 2006–2010. Date...

Consider a portion of monthly return data (In %) on 20-year Treasury Bonds from 2006–2010.

Date Return
Jan-06 4.12
Feb-06 4.44
Mar-06 4.02
Apr-06 4.79
May-06 4.01
Jun-06 3.65
Jul-06 4.07
Aug-06 4.3
Sep-06 5.49
Oct-06 3.6
Nov-06 4.71
Dec-06 3.83
Jan-07 4.14
Feb-07 3.53
Mar-07 3.68
Apr-07 4.19
May-07 3.34
Jun-07 3.51
Jul-07 3.48
Aug-07 3.68
Sep-07 4.96
Oct-07 3.42
Nov-07 4.17
Dec-07 4.25
Jan-08 5.05
Feb-08 3.23
Mar-08 5.34
Apr-08 5.15
May-08 4.58
Jun-08 4.61
Jul-08 4.25
Aug-08 4.49
Sep-08 3.55
Oct-08 4.48
Nov-08 4.38
Dec-08 3.99
Jan-09 3.73
Feb-09 5
Mar-09 3.2
Apr-09 3.87
May-09 5.5
Jun-09 4.6
Jul-09 3.79
Aug-09 3.73
Sep-09 5.35
Oct-09 4.24
Nov-09 3.86
Dec-09 5.38
Jan-10 3.61
Feb-10 4.59
Mar-10 4.22
Apr-10 3.42
May-10 4.54
Jun-10 5.49
Jul-10 4.29
Aug-10 4.49
Sep-10 3.78
Oct-10 3.98
Nov-10 3.44
Dec-10 5.19

Estimate a linear trend model with seasonal dummy variables to make forecasts for the first three months of 2011. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

Year Month y^t
2011 Jan
2011 Feb
2011 Mar

In: Statistics and Probability

Ahmed (accountant), Ben (entrepreneur) and Chen (operational skills) formed Drastic Designs Pty. Ltd. in 2006. They...

Ahmed (accountant), Ben (entrepreneur) and Chen (operational skills) formed Drastic Designs Pty. Ltd. in 2006. They were executive directors and equal shareholders. The company’s focus was initially on designing and selling handbags. Progress Bank lent them funds and took a security interest by way of a floating charge over the company’s stock in trade.
In June 2009 Ben heard that the organisers of the Autumn Fashion Show were calling for tenders (bids) to design the stage for the fashion parade. Ben was excited at the prospect of bidding and thought it would assist the company’s growth. Ahmed advised against putting in a tender (bid) for such a large project that was completely different to anything the company had done before. Chen thought it would be a good challenge. A resolution was passed (2:1) that the company would make a bid. Ahmed resigned from the Board in protest and Ben took over the role of managing director. Ben’s girlfriend, Nula, joined the Board as a non-executive director to replace Ahmed. As she had some financial skills, she helped with the tender details. Drastic Designs won the tender.
Since Ahmed was not available to help with the financial side of the business, Ben hired Sam, a recent Bachelor of Commerce graduate, as book-keeper and generally to advise them on the accounting side of the business. Ben and Chen relied heavily on Sam. When asked by suppliers when they were going to be paid, Chen just told them to ‘see Sam – he is in charge of that sort of thing’.
By November 2010 it was apparent that the Autumn Fashion Show tender had been underpriced and that the project had lost $150,000. Sam made a list of outstanding debtors and paid those who were the most demanding.
In December 2010 Drastic Designs signed a one-year contract to redesign several office buildings. This meant that Drastic Designs had to employ more staff and buy more equipment. At the January 2011 Board meeting Nula expressed her concern that there was inadequate financial information being produced by Sam.
In February and March 2011 Drastic Designs was late paying its interest payments to Progress Bank, which threatened to take action if payment was late again. The bank refused Ben’s request for further finance. Several unsecured creditors wrote expressing their concern with the fact their accounts were more than 90 days overdue. It is now May 2011.
Required:
(a)?Discuss whether Ahmed, Ben, Chen, Nula and/or Sam are in breach of their insolvent trading duties under the Corporations Act 2001 (Cth).
(b)?It is apparent that Drastic Designs is in financial distress – briefly identify and then explain the options for the directors and creditors and the potential impact of those options on Drastic Designs.??? ??
Refer to relevant sections of the Corporations Act 2001 (Cth) and to relevant cases, if any, in your response.

In: Finance

This is a tableau question. Year Sales 2005 49387 2006 53412 2007 56783 2008 58436 2009...

This is a tableau question.

Year Sales
2005 49387
2006 53412
2007 56783
2008 58436
2009 59994
2010 61515
2011 63182
2012 67989
2013 70448
2014 72601
2015 75482
2016 78341
2017 81111
2018 82517
2019 83275
2020 84005

I. (a) Determine the trend line using both linear and two nonlinear equations Hint: You can choose any two of the nonlinear options in edit trend lines within Tableau. (b) Write down the equations (coefficients). Hint: Double click on trend line and click on describe the model.

II. Which trend line would you suggest? Why?

III. Estimate the sales for 2022. Does this seem like a reasonable estimate based on historical data? (Hint: Show Me — first icon on the left hand side)

IV. Check the quality of the forecast prepared by Tableau. Also, Provide Mean Absolute Error (MAE), and the Mean Absolute Percentage Error (MAPE). Hint: one click on forecast area with the right button of your mouse, then describe forecast and check first Summary and later Models.

V. Prepare a dashboard with 4 sheets: Sheet 1 for the trend line using linear function, Sheet 2 for the trend line using one of the nonlinear function of your choice, Sheet 3 for the trend line using another nonlinear function of your preference and Sheet 4 for Forecasting.

In: Statistics and Probability

1. The Russian ex-FSB officer Alexander Litvinenko was poisoned in 2006 with 10 µg of polonium-210,...

1. The Russian ex-FSB officer Alexander Litvinenko was poisoned in 2006 with 10 µg of polonium-210, an α emitter that kills through radiation poisoning as molecules important to metabolism are ionized by the passage of the α particles. He died 3 weeks later.

(a) (5 pts) What is the nuclear decay process and what is the Q of the reaction in MeV? Show the full calculation.

(b) (5 pts) Find the kinetic energies (in MeV) of the α particle and the accompanying nucleus.

2. Refer to the previous problem.

(a) (3 pts) What was the initial activity of this dose of Po-210 in decays/sec?

(b) (3 pts) What fraction of the Po-210 sample decayed in the first 3 weeks?

(c) (2 pts) How many α particles were emitted in the first 3 weeks?

(d) (2 pts) If the average ionization energy of molecules in body cells is 2 eV, approximately how many molecules were ionized in the first 3 weeks?

In: Physics

Ramzi corp. issued $6,000,000 of 8% debentures on May 1, 2006 and received cash totaling $5,323,577....

Ramzi corp. issued $6,000,000 of 8% debentures on May 1, 2006 and received cash totaling $5,323,577. The bonds pay interest semiannually on May 1 and November 1. The maturity date on these bonds is November 1, 2014. The firm uses the effective-interest method of amortizing discounts and premiums. The bonds were sold to yield an effective-interest rate of 10%.

Calculate the amount of discount amortization during the first year (5/1/06 through 4/30/07) these bonds were outstanding. (round to the nearest dollar.)

a.

discount amortization  is $ 53,067

b.

discount amortization  is $ 52,067

c.

discount amortization  is $ 52,667

d.

discount amortization  is $ 53,667

In: Accounting

aked beans a lot more predictable than shares BY SIMON HOYLE 11 March 2006 The Sydney...

aked beans a lot more predictable than shares BY SIMON HOYLE
11 March 2006
The Sydney Morning Herald
THE price of a tin of baked beans doesn't change much from day to day. The price of
a company’s shares, on the other hand, can change quite a lot. In investment terms, the price of the baked beans isn't as volatile as the share price.
While you might have a good idea of how much a tin of baked beans will cost you whenever you go 10 buy one, you can't be as certain about the price of a share. IBut there are ways you can make educated guesses about what the price of a share might do over a period of time. In other words, you can make educated guesses about the range of likely future outcomes, and hence about likely future volatility. A common way of measuring an asset's riskiness, or volatility, is the "standard deviation" of the asset's returns. Standard deviation is a statistical method of calculating the most likely range of returns from an asset. It is the method that analysts use to make long-term predictions from short-term data.
If you were to plot the returns from an asset on a graph, where the horizontal axis is the return the asset achieves every day, week or month, and the vertical axis is the number of times that return occurs, you'd get what's called a "distribution curve". This looks like a bell, and for that reason it's also sometimes known as a bell curve. What a bell curve tells you is that an asset's returns tend to be clustered around a certain number, and the further from that number you move along the horizontal axis, the fewer times the returns tend to crop up.
Calculating the standard deviation of an asset's returns tells you how far from the average return you have to move in order to include about two thirds of the range of an asset's returns. Moving two standard deviations from the average means you can cover about 95 per cent of the range of returns. In other words, you can say, with a high degree of certainty, what the range of an asset's returns will be.
"For example, an annualised volatility of 8 per cent together with an expected return of 20 per cent over the year can be used to produce an interval of possible return outcomes for the year," CommSec says.
"In this example there is an approximately two-thirds chance that the outcome after one year is 20 per cent, plus or minus 8 per cent (that is, 12 per cent to 28 per cent), and approximately a 95 per cent chance that the outcome will fall in an interval twice as wide (that is, 4 per cent to 36 per cent)."
A higher standard deviation means the likely outcomes range a long way from the average, and a lower standard deviation means the possible outcomes are more tightly concentrated around the average.

Part one requires qualitative explanations that display your understanding of the concepts of risk and return. The article of Simon Hoyle gives some understanding of the concepts of risk and return. However, it was published in a newspaper where the target readers were not all educated in finance. You are required to answer the following questions while providing deeper insights about the concepts of risk and return than those that are provided in the article.
Read the article by Simon Hoyle above and answer question the below question :

QUESTION(200 words)

Explain the distinction between Systematic and Unsystematic Risk? How can investors avoid each one of those risk?


In: Finance

Baked beans a lot more predictable than shares BY SIMON HOYLE 11 March 2006 The Sydney...

Baked beans a lot more predictable than shares BY SIMON HOYLE
11 March 2006
The Sydney Morning Herald
THE price of a tin of baked beans doesn't change much from day to day. The price of
a company’s shares, on the other hand, can change quite a lot. In investment terms, the price of the baked beans isn't as volatile as the share price.
While you might have a good idea of how much a tin of baked beans will cost you whenever you go 10 buy one, you can't be as certain about the price of a share. IBut there are ways you can make educated guesses about what the price of a share might do over a period of time. In other words, you can make educated guesses about the range of likely future outcomes, and hence about likely future volatility. A common way of measuring an asset's riskiness, or volatility, is the "standard deviation" of the asset's returns. Standard deviation is a statistical method of calculating the most likely range of returns from an asset. It is the method that analysts use to make long-term predictions from short-term data.
If you were to plot the returns from an asset on a graph, where the horizontal axis is the return the asset achieves every day, week or month, and the vertical axis is the number of times that return occurs, you'd get what's called a "distribution curve". This looks like a bell, and for that reason it's also sometimes known as a bell curve. What a bell curve tells you is that an asset's returns tend to be clustered around a certain number, and the further from that number you move along the horizontal axis, the fewer times the returns tend to crop up.
Calculating the standard deviation of an asset's returns tells you how far from the average return you have to move in order to include about two thirds of the range of an asset's returns. Moving two standard deviations from the average means you can cover about 95 per cent of the range of returns. In other words, you can say, with a high degree of certainty, what the range of an asset's returns will be.
"For example, an annualised volatility of 8 per cent together with an expected return of 20 per cent over the year can be used to produce an interval of possible return outcomes for the year," CommSec says.
"In this example there is an approximately two-thirds chance that the outcome after one year is 20 per cent, plus or minus 8 per cent (that is, 12 per cent to 28 per cent), and approximately a 95 per cent chance that the outcome will fall in an interval twice as wide (that is, 4 per cent to 36 per cent)."
A higher standard deviation means the likely outcomes range a long way from the average, and a lower standard deviation means the possible outcomes are more tightly concentrated around the average.

Part one requires qualitative explanations that display your understanding of the concepts of risk and return. The article of Simon Hoyle gives some understanding of the concepts of risk and return. However, it was published in a newspaper where the target readers were not all educated in finance. You are required to answer the following questions while providing deeper insights about the concepts of risk and return than those that are provided in the article.
Read the article by Simon Hoyle above and answer question the below question :

QUESTION (200 words)
Apparently, Simon Hoyle's article did not mention what would happen to the risk if an investor decided to buy more than one share. Explain how adding new shares to a portfolio can affect the risk and return of that portfolio. You should use the concepts of correlation coefficient and the standard deviation in your explanations.

In: Finance

Payments of 75 each are made every 2 months from September 1, 2006 to July 1,...

Payments of 75 each are made every 2 months from September 1, 2006 to July 1, 2011, inclusive. For each of the following cases draw the time diagram line and find the value of the series:
(a) 2 months before the first payment at effective compound annual interest rate i = 0.05;
(b) 10 months before the first payment at nominal interest rate i(12) = 0.12 compounded monthly;
(c) 2 months after the final payment at nominal discount rate d(4) = 0.08 compounded quarterly;
(d) one year after the final payment at annual force of interest δ = 0.07.

In: Finance

Balance Sheet as at year end 31st Dec 2005 2006 2007 2008 2009 CAPITAL AND LIABILITIES:...

Balance Sheet as at year end 31st Dec

2005

2006

2007

2008

2009

CAPITAL AND

LIABILITIES:

Equity share capital

400,000

600,000

500,000

400,000

600,000

Long term loan

500,000

250,000

300,000

400,000

300,000

Sundry creditors

200,000

300,000

350,000

340,000

250,000

Short term loan

50,000

40,000

60,000

115,000

50,000

ASSETS:

Land and Building

300,000

500,000

600,000

700,000

450,000

Furniture

600,000

450,000

400,000

400,000

500,000

Cash at bank

50,000

60,000

70,000

50,000

70,000

Stock

140,000

150,000

100,000

80,000

120,000

Prepaid expenses

60,000

30,000

40,000

25,000

60,000

You are required to carry out the following analyses;

Common size balance sheet for the five years. and interpret. (5 marks

In: Accounting