(a) Select eight correct statements from the following list. You
will get one mark for every correct statement selected, but you
will lose one mark for any incorrect statement you select, so do
not just guess. No-one will go below 0 mark regardless of how many
incorrect statements are selected.
1. The tonne of oil equivalent (toe) is a unit of power. 2. Thermal
energy can be entirely converted into mechanical energy using an
internal combustion engine. 3. At present, coal is the most
abundant fossil-fuel in the word. 4. In the UK, oil-fired power
production has been phased out following the high price of oil and
the stringent emission limits introduced with the EU Large
Combustion Plant Directive. 5. SOx and NOx emission is a greater
issue in the operation of CCGT power plants rather than of
coal-fired power plants. 6. Nuclear fusion is currently employed
for electricity production in the UK. 7. In wind turbines,
electromagnetic induction is essential to convert rotor kinetic
energy into electrical energy. 8. A hydrogen fuel cell converts
electricity into H2 and O2. 9. Semiconductor materials are
essential for the operation of photovoltaics. 10. Stall and pitch
control allow the safe operation of wind turbines. 11. Heat is
always transferred from a hot to a cold body resulting is an
overall decrease of entropy in an isolated system. 12. Impulse
water turbines are ideal for high-head and low-flow hydro energy
production. 13. Heat pumps are used to transfer heat from a warm to
a cold environment. 14. District heating can be a form of Combined
Heat and Power. 15. In the UK, tidal ebb generation provides four
power generation peaks a day. 16. Information & Communication
Technolo
In: Other
We have three light bulbs with lifetimes T1,T2,T3 distributed according to Exponential(λ1), Exponential(λ2), Exponential(λ3). In other word, for example bulb #1 will break at a random time T1, where the distribution of this time T1 is Exponential(λ1). The three bulbs break independently of each other. The three light bulbs are arranged in series, one after the other, along a circuit—this means that as soon as one or more light bulbs fail, the circuit will break. Let T be the lifetime of the circuit—that is, the time until the circuit breaks.
(a) What is the CDF of T, the lifetime of the circuit?
(b) Next, suppose that we only check on the circuit once every second (assume the times T1,T2,T3,T are measured in seconds). Let S be the first time we check the circuit and see that it’s broken. For example, if the circuit breaks after 3.55 seconds, we will only observe this when 4 seconds have passed, and so S = 4. Calculate the PMF of S.
(c) Finally, suppose that instead of checking on the circuit every second, we instead do the following: after each second, we randomly decide whether to check on the circuit or not. With probability p we check, and with probability 1−p we do not check. This decision is made independently at each time. Now let N be the number of times we check and see the circuit working. For example, if the circuit breaks at time 3.55, and our choices were to check at time 1 second, not to check at times 2 or 3 or 4, and to check at time 5, then N = 1, since the circuit was broken the 2nd time we checked. What is the PMF of N? (Hint: start by finding the joint PMF of N and S. It’s fine if your answer is in summation form.)
In: Math
Atlantic Northern Airlines (ANA) has an unhappy customer. Ms.
Linda Anderson flew from
Washington, D.C., to Los Angeles. The flight stopped briefly at
Denver International
Airport, where she got off the plane for half an hour. When she
returned to her seat, her
$400 prescription reading glasses were gone. She asked the flight
attendant where the
glasses were, and the attendant said they probably were thrown away
since the cleaning
crew had come in with big bags and tossed everything in them. Ms.
Anderson tried to
locate the glasses through the airline’s lost-and-found service,
but she failed.
She wrote a strong letter to the airline demanding reimbursement
for the loss. She felt
that it was obvious that she was returning to her seat. The
airline, however, knows that an
overwhelming number of passengers arriving at hubs switch planes
for their connecting
flights. The airline does not know who is returning. What’s more,
flight attendants are
instructed to announce that the plane is continuing to another city
and that passengers
who are returning should take their belongings. During the brief
stops, cabin cleaning
crews speed through the planes removing newspapers, magazines,
leftover foods, and
trash. Airlines feel no responsibility for personal items left in
the cabins.
Your Task. As Manager of the Customer Relations
Department of Atlantic Northern
Airlines, you must deny the customer’s claim but retain her
goodwill using techniques
learned in Chapter 9. The airline never refunds cash, but it might
consider travel vouchers
for the value of the glasses. Remember that apologies cost nothing.
Write a claim denial
to Ms. Linda Anderson, 534 Cadillac Avenue, Venice, CA 90034
The Claim Denial needs to have a buffer, reasons why we cannot refund for the glasses (do not use the word policy), the implied refusal, and a positive closing
In: Operations Management
To Sign or Not to Sign?
Child development experts agree that it is a good idea for parents to begin talking to their babies from the moment of birth. From that moment on, babies are learning language.
Why wait until babies can speak to teach them to communicate with the caregivers? Why not teach them sign language and communicate with them in sign language when they are 4 or 6 months old??
Controversial at the time it was first suggested a few years ago,
teaching babies to sign has plenty of supporters and lots of
companies willing to train you and your baby to sign. In fact, the
only detractors come from those who fear that parents may feel
under pressure to learn sign language in order to make sure their
babies get the claimed “jump start” on language development.
Among the benefits are exposures to making language six months or more before most children speak their first word (usually at 12 months) thus enabling babies to express themselves. Experts say babies and caregivers are less frustrated because they can express their needs and wishes. It is also believed that signing babies become more adept at spoken language earlier. Some suggest that IQ scores are higher among babies who signed before speaking by as many as 10-12 points.
What is your take of this idea? Have you ever heard of it? Would
you want to learn sign language in order to teach their babies to
sign?
Below are a number of websites to further explore the topic. Look at one or two of them before participating in the discussion.
http://www.literacytrust.org.uk/talktoyourbaby/signing.html#talk
http://www.mayoclinic.org/healthy-lifestyle/infant-and-toddler-health/expert-answers/baby-sign-language/faq-20057980
http://psychcentral.com/lib/teaching-your-baby-sign-language-can-benefit-both-of-you/
In: Psychology
Please answer either one (option 1 or 2) thank you
Option 1: A Communication Skill Needed to Play a Role
Define a role that you want to do better. Perhaps it is getting a better position at work, becoming a supervisor at . . .? Perhaps it’s to be a better student (one who gets better grades). For the role, be sure to define it (just a sentence or two). For example, you could describe the key duties and responsibilities of being a supervisor.
Then define one communication skill you need to develop to play the role better. For example, as a supervisor (or parent), it wouldn’t hurt to tweek your empathic listening abilities.
Then describe critically important concepts, principles and theories (include a link) for that skills. Your theory can come from the book, but be sure to cite your page(s).
You can choose either a verbal, written or electronic messages. You can choose the verbal skills mentioned in the announcement, something written such as generating an aesthetically pleasing poster or flyer, or an email that gets and holds your attention are just a few examples.
Choose something that will accelerate your career.
OR
Option 2: Overcoming a Communication Barrier
Pick one of the communication barriers listed in this article. There are 17 of them. Some more subtle than others. Some more easy to fix than others.
https://www.legacee.com/communication-skills/barriers/
Be sure to choose one that is giving you problems. So perform a self-assessment using the 17 barriers as a guide and generate a list of your top five barriers. One being most important ranked in order of declining importance.
List one of your top five communication barriers and discuss how it can be overcome. Be sure to include a link or reference the page of the book where you are getting your inspiration for doing better.
Word count between 300 and 400 words
In: Operations Management
David Ortega is the lead researcher for an upscale restaurant group hoping to add another chain that would compete directly with the upscale Smith and Wollensky restaurants (http://www.smithandwollensky.com). Smith and Wollensky is also considering opening a lesser priced “Grill.” David wants to learn what people are willing to pay for and what sacrifice can be made to deliver a satisfying if not luxurious experiences, and how can he create a unique experience at a lower price?
David decides a qualitative research approach will be useful. He wants to understand how the fine dining experience offers value and what intangibles create value for consumers. He uses a phenomenological approach, and the primary tool of investigation is conversational interviewing. He enters into casual conversations with businesspeople in the lounge of the Ritz Carlton by commenting on the wine he is sipping by saying, “It ain’t bad, but it’s hard to believe they get $14 for a glass of this stuff.”
Comments of the five consumers he conversed with are given verbatim (the comments are not given/included), and he decides to use a word count to try to identify the main themes. He hopes this will clarify the business problem and provide a better understanding of the total value proposition offered by restaurants, wines, hotels, and other products.
In no less than 5 sentences a paragraph, answer the following questions related to the problem.
Questions:
1. [Internet Question] Using the Internet, try to identify at least three restaurants that Smith and Wollensky competes with and three with whom the new S&W grill may compete.
2. Try to interpret the discussions above. You may use one of the approaches discussed in the text. What themes should be coded? What themes occur most frequently? Can the different themes be linked together to form a unit of meaning?
3. What is the result of this research? What should David report back to the restaurant group?
In: Operations Management
Please read through this unit's list of terms and concepts provided in the Key Terms module of this unit. You should look for these terms as you read the assigned textbook chapters. The terms and concepts are important for understanding the material. Do not look at each word as a separate entity that stands alone. Try to understand it in the context of the chapters' content. You should write out your own definitions for each term.
For this unit, please submit five of these term definitions for grading. A few words of caution: writing out the definitions is an important exercise, even the ones you don't have to submit. For this assignment do not simply copy a one-sentence definition of the term. Instead, provide a definition which relates to context and/or examples to best demonstrate your understanding.
Money markets Negotiable CD
Bond equivalent yield
Discount yield
Opportunity cost
Liquidity
Treasury Bills
LIBOR
Default risk free
Banker's acceptance
Repo and reverse repurchase agreement
Eurodollar deposits
Term vs serial bonds
Mortgage bonds
Convertible and callable bonds
Call premium
Second mortgages
Lien
Syndicate
Originating house
Preemptive rights
Red herring proxy
Secondary stock markets
Net long (short) in a currency
Open position
Safe haven
Purchasing power parity
Interest rate parity theorem (IRPT)
Open interest
Option
American option
European option
Call option
Put option
Intrinsic value of an option
Time value of an option
Foreign exchange rates
Dollarization
Foreign exchange risk
Currency appreciation
Derivative security
Derivative security markets
Spot contract
Forward contract
Futures contract
Marked to market
Initial margin
Maintenance margin
Floor broker
In: Accounting
WITHOUT USING POINTERS. This is C programming. I am writing a program which should calculate standard deviation of an array of exam scores and then add the standard deviation to each array element. It should print the original array, the standard deviation, and the new rounded adjusted array. I included my question as a comment in the line of code that is giving me an issue. (Removing the a from E-x-a-m as Chegg doesn't allow the word.)
#include <stdio.h>
#include <math.h>
float calcstddev(float exmgrades[], int size)
{
float sum =0.0;
float mean;
int temp;
float variance;
float stddev;
float difference;
for (temp=0;temp<size;++temp)
{
sum+=exmgrades[temp];
}
mean = sum/size;
for (temp=0;temp<size;++temp)
{
stddev+=pow(exmgrades[temp]-mean,2);
}
stddev/=size;
stddev=sqrt(stddev);
return stddev;
}
float adjustscores(float exmgrades[],int size)
{
float stddev=calcstddev(exmgrades,7);
int temp=0;
float adjustedscores[size];
for(temp=0;temp<size;++temp)
{
adjustedscores[temp]+=exmgrades[temp]+stddev;
}
return adjustedscores; //////HERE is the line that
gives me an error. It states:[Error] incompatible types when
returning type 'float *' but 'float' was
expected. If I remove this line, my output for
the adjusted array elements is .0f, so the data isn't passed to
main. What should I do here? ///////////////////
}
int main()
{
float exmgrades[]={90,95,90,82,80,87,92};
float stddev=calcstddev(exmgrades,7);
int size;
int arrayprint;
float adjustedscores[size];
printf("The exm scores are: ");
for (arrayprint = 0; arrayprint < 7;
arrayprint++)
{
printf("%.0f ", exmgrades[arrayprint]);
}
printf("\nThe standard deviation is %.4f",
stddev);
printf("\nThe adjusted scores are: ");
for (arrayprint =0; arrayprint <7;
arrayprint++)
{
printf(".0f", adjustedscores[arrayprint]);
}
}
In: Computer Science
Create a Java class named Trivia that contains three instance variables, question of type String that stores the question of the trivia, answer of type String that stores the answer to the question, and points of type integer that stores the points’ value between 1 and 3 based on the difficulty of the question.
Also create the following methods:
Create Java application that contains a main method that plays a simple Trivia game. The game should have 5 questions. Each question has a corresponding answer and point value between 1 and 3. Implement the game using an array of 5 Trivia objects.
Next, open a binary file and store those 5 Trivia objects into a binary file then close the file. Open the file again to read each question one at a time and store them into an array of objects.
Randomly, display a question and allow the player to enter an answer.
If the player’s answer matches the actual answer, the player wins the number of points for that question. If the player’s answer is incorrect, the player wins no points for the question. Make sure the answer is not case sensitive and it is only one word or two words at most. The program should show the correct answer if the player is incorrect. After the player has answered all five questions, the game is over and your program should display the player’s total score.
You need to turn in the code, a sample output of those 5 questions, the player's answers and the total.
Make sure it is readable, formatted and commented.
In: Computer Science
Research Problem
Find a catalog or visit the Website of a major distributor of microcomputer equipment,such as Computer Discount Warehouse (www.cdw.com) or Dell (www.dell.com). Select or configure a system that provides optimal performance for the following types of users:
· A home user who uses word-processing software, such as Microsoft Office; a home accounting package, such as Quicken or TurboTax; children’s games; and multimedia software for editing pictures and creating video DVDs
· An accountant who uses office software, such as Microsoft Office, and statistical software, such as SPSS or SAS, and downloads large amounts of financial data from a corporate server for statistical and financial modeling .
· An architect who uses typical office software and CAD software, such as AutoCAD
Pay particular attention to whether CPU power, memory, disk space, and I/O capabilities are adequate. Compare the cost of each computer. Which is most expensive and why?
Instructions
Please read these instructions carefully.
Answer the Research Problem above for the three types of users listed. You should have 3 different configurations total because there is not a one-size-fits-all with the different user needs presented. Use a budget of a max of $1,500 per machine, not the total for all three combined, and you do not have to use the entire budget. Do not include productivity software or peripherals such as scanners or printers in the budget total. You may use an online configuration site from major manufacturers (Dell, HP, Lenovo, etc) or build by individual components. If you are building the PC by individual components, be sure to add the cost of an operating system and necessary peripherals (keyboard/mouse/display). The computers and components must be available on the market today. Do not use components that have been out of stock for years. Do not use a configuration from a prior class, even if you originally created it.
In: Computer Science