...ANATOMY AND PHYSIOLOGY P2, P3 4/27/2015 Khadra Ali | P1 – Outline the functions of the main cell components The human body is made up of millions of tiny cells that can only be seen under a microscope, cell also vary in shape and size. Cells are the basic structural of all living things. The human body is poised of trillions of cells. They give structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of them. Cells all have different sizes, shapes, and jobs to do. Each cell has a different function. The actual definition of cells is the smallest structural unit of the body that is capable of independent functioning, it consisting of one or more nuclei; it has a cytoplasm, and various organelles which are all surrounded by a cell membrane. There are four main parts to a cell; Plasma/Cell membrane, Cytoplasm, Nucleus and Cell Organelles. Plasma/Cell membrane: The plasma/cell membrane is a phospho-lipid-protein bi-layer; the lipids are small fatty molecules in two layers (bi-layer) with larger protein molecules inserted at intervals partly or completely through the bi-layer. The lipid molecules are phospholipids, the two lipid chains are insoluble in water and the phosphate head is water soluble. The fluid which surrounds the cells and the cytoplasm are watery environments next to the phosphate heads. Protein molecules create channels...
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...Unit 5 – P3 By Jess Ross Respiratory system The respiratory system is made up of organs that help the body to breathe that is its main function. The lungs are the main organs of the respiratory system. In the lungs oxygen is taken into the body and carbon dioxide is breathed out. The red blood cells are responsible for picking up the oxygen in the lungs and carrying the oxygen to all the body cells that need it. The red blood cells drop off the oxygen to the body cells, then pick up the carbon dioxide which is a waste gas product produced by our cells. The red blood cells transport the carbon dioxide back to the lungs and we breathe it out when we exhale. Renal system The renal system (also known as the urinary system) consists of the kidneys, urethras, urinary bladder, and urethra. The kidneys filter the blood to remove wastes and produce urine. The urethras, urinary bladder, and urethra together form the urinary tract, which acts as a plumbing system to drain urine from the kidneys, store it, and then release it during urination. Besides filtering and eliminating wastes from the body, the urinary system also maintains the homeostasis of water, ions, pH, blood pressure, calcium and red blood cells. Within the system renal veins take blood from the kidneys straight into the vena cava, the main within the body. Nervous system The nervous system comprises the central nervous system (the brain and spinal cord) and the peripheral nervous system, the nerves running...
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...CHAPTER 15 Problem 1 Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting out of their cars. On weekday mornings, arrivals to the drive-up teller window occur at random, with an arrival rate of 24 customers per hour or 0.4 customers per minute. a) What is the mean or expected number of customers that will arrive in a five-minute period? The expected number is of 0.4*5 = 2 customer is a five-minute period. b) Assume that the Poisson probability distribution can be used to describe the arrival process. Use the arrival rate in part (a) and compute the probabilities that exactly 0, 1, 2, and 3 customers will arrive during a five-minute period. The probabilities of the described scenarios are as follows: P0=20e-20! P0=0.135335283 P1=21e-21! P1=0.270670566 P2=22e-22! P2=0.270670566 P3=23e-23! P3=0.180447044 c) Delays are expected if more than three customers arrive during any five-minute period. What is the probability that delays will occur? This probability can be expressed as the probability of more than 3 customers arriving during the five-minute period, which can be computed as following: P(x > 3) = 1 – P(x ≤ 3) P (x > 3) = 1 – 0.85712346 P(x > 3) = 0.14287654 Thus, there is a 14, 29% probability of expected delays in five-minute period. Problem 3 Use the single-server drive-up bank teller operation referred to in Problems 1 and 2 to determine the following...
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... and Evaluation: Beating the Market ABSTRACT During the period of 2005 to 2010, the market portfolio (P1) and one suggested portfolio (P3) post a positive absolute return of 0.80% and 0.82% respectively which underperformed the active fund portfolio (P2) 0.91%. This report follows various modeling methods in order to back test the performance of the active fund portfolio and compare its performance with that of two other portfolios. The findings indicate that, even though P2 achieves the highest return on the overall performance, the limitations such as the macro environment, the assumptions set, and the Shrinkage method used that accidentally downsizes some valuable stocks in out-‐samples as they are closely correlated are being ignored. By contrast, P3 will probably offer a “middle-‐choice” which will bring a promising and more stable return. 1 Portfolio Modeling and...
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...Chapter 6: CPU Scheduling • • • Basic Concepts Scheduling Criteria Scheduling Algorithms Operating System Concepts 6.1 Basic Concepts • Maximum CPU utilization obtained with multiprogramming. • CPU–I/O Burst Cycle – Process execution consists of a cycle of CPU execution and I/O wait. – Example: Alternating Sequence of CPU And I/O Bursts – In an I/O – bound program would have many very short CPU bursts. – In a CPU – bound program would have a few very long CPU bursts. Operating System Concepts 6.2 1 CPU Scheduler • The CPU scheduler (short-term scheduler) selects from among the processes in memory that are ready to execute, and allocates the CPU to one of them. • A ready queue may be implemented as a FIFO queue, priority queue, a tree, or an unordered linked list. • CPU scheduling decisions may take place when a process: 1. Switches from running to waiting state (ex., I/O request). 2. Switches from running to ready state (ex., Interrupts occur). 3. Switches from waiting to ready state (ex., Completion of I/O). 4. Terminates. • Scheduling under 1 and 4 is nonpreemptive; otherwise is called preemptive. • Under nonpreemptive scheduling, once the CPU has been allocated to a process, the process keeps the CPU until it releases the CPU either by terminating or by switching to the waiting state. Operating System Concepts 6.3 Dispatcher • Dispatcher module gives control of the CPU to the process selected by the short-term scheduler;...
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...------------------------------------------------- Level 3 Sub Dip/Extended Diploma in Business - Academic Year 2013-14 Candidate | | | Unit No. | Unit 5 ; Unit 2 ; Unit 18 | | Unit Name | Business accounting, Business resources and managing a business event | * | Qualification | Btec Level 3 | | Start Date | September 2013 | | Deadline | November 2013 | | Assessor | Maria Pillay | | Unit 5 – Business accounting | | | Criteria | To achieve the criteria the evidence must show that the student is able to: | Page No. | Achieved? | P1 | Describe the purpose of accounting for an organisation | | | P2 | Explain the difference between capital and revenue items of expenditure and income | | | P3 | Prepare a 12 month cash flow forecast to enable an organisation to manage its cash | | | P4 | Prepare a profit and loss account and balance sheet for a given organisation | | | P5 | Perform ration analysis to measure the profitability and liquidity and efficacy of a given organisation | | | M1 | Analyse the cash flow problems a business might experience | | | M2 | Analyse the performance of a business using suitable ratios | | | D1 | Justify actions a business might take when experiencing cash flow problems | | | D2 | Evaluate the financial performance ad position of a business using ratio analysis | | | Unit 2 – Business resources | | | Criteria | To achieve the criteria the evidence must show...
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...CPU SCHEDULINGCPU scheduling in UNIX is designed to benefit interactive processes. Processes are given small CPU time slices by a priority algorithm that reduces to round-robin scheduling for CPU-bound jobs.The scheduler on UNIX system belongs to the general class of operating system schedulers known as round robin with multilevel feedback which means that the kernel allocates the CPU time to a process for small time slice, preempts a process that exceeds its time slice and feed it back into one of several priority queues. A process may need much iteration through the "feedback loop" before it finishes. When kernel does a context switch and restores the context of a process. The process resumes execution from the point where it had been suspended.Each process table entry contains a priority field. There is a process table for each process which contains a priority field for process scheduling. The priority of a process is lower if they have recently used the CPU and vice versa.The more CPU time a process accumulates, the lower (more positive) its priority becomes, and vice versa, so there is negative feedback in CPU scheduling and it is difficult for a single process to take all the CPU time. Process aging is employed to prevent starvation.Older UNIX systems used a 1-second quantum for the round- robin scheduling. 4.33SD reschedules processes every 0.1 second and recomputed priorities every second. The round-robin scheduling is accomplished by the -time-out mechanism, which tells...
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...Case Studies 1. SOLUTION TO STARTING RIGHT CASE, CH. 3, PAGE 110 This is a decision-making-under-uncertainty case. There are two events: a favorable market (event 1) and an unfavorable market (event 2). There are four alternatives, which include do nothing (alternative 1), invest in corporate bonds (alternative 2), invest in preferred stock (alternative 3), and invest in common stock (alternative 4). The decision table is presented. Note that for alternative 2, the return in a good market is $30,000 (1 + 0.13)5 = $55,273. The return in a good market is $120,000, (4 x $30,000) for alternative 3, and $240,000, (8 x $30,000) for alternative 4. Payoff table Laplace Event 1 Alternativ e1 Alternativ e2 Alternativ e3 Alternativ e4 0 55,273 Event 2 0 – 10,00 0 – 15,00 0 – 30,00 0 Average Value 0.0 22,636.5 Minimu m 0 – 10,000 – 15,000 – 30,000 Maximu m 0 55,273 Hurwicz Value 0.00 – 2,819.9 7 –150.00 120,00 0 240,00 0 52,500.0 120,000 105,000. 0 240,000 –300.00 Regret table Maximum Alternative Alternative 1 Alternative 2 Alternative 3 Alternative 4 Event 1 240,000 184,727 120,000 0 Event 2 0 10,000 15,000 30,000 Regret 240,000 184,727 120,000 30,000 a. Sue Pansky is a risk avoider and should use the maximin decision approach. She should do nothing and not make an investment in Starting Right. b. Ray Cahn should use a coefficient of realism of 0.11. The best decision is to do nothing. c. Lila Battle should eliminate alternative 1 of doing nothing and apply the maximin...
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...The resources can be categorized into physical and logical resources. The physical resources are printer, disk drive, cpu, memory, scanner etc. The logical resources are files. • Deadlock is more serious than indefinite postponement or starvation because it affects more than one job. • Because resources are being tied up, the entire system (not just a few programs) is affected. • Requires outside intervention (e.g., operators or users terminate a job) to resolved the deadlock. 2. Seven Cases of Deadlocks Case 1 Deadlocks on file requests Case 2 Deadlocks in databases Case 3 Deadlocks in dedicated device allocation Case 4 Deadlocks in multiple device allocation Case 5 Deadlocks in spooling Case 7 Deadlocks in disk sharing Case 8 Deadlocks in a network Case 1: Deadlocks on File Requests | |If jobs can request and hold files for duration of their | | |execution, deadlock can occur. | | | | | |Any other programs that require F1 or F2 are...
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...Case Studies 1. SOLUTION TO STARTING RIGHT CASE, CH. 3, PAGE 110 This is a decision-making-under-uncertainty case. There are two events: a favorable market (event 1) and an unfavorable market (event 2). There are four alternatives, which include do nothing (alternative 1), invest in corporate bonds (alternative 2), invest in preferred stock (alternative 3), and invest in common stock (alternative 4). The decision table is presented. Note that for alternative 2, the return in a good market is $30,000 (1 + 0.13)5 = $55,273. The return in a good market is $120,000, (4 x $30,000) for alternative 3, and $240,000, (8 x $30,000) for alternative 4. Payoff table Laplace Hurwicz Event 1 Event 2 Average Value Minimu m Maximu m Value Alternativ e1 0 0 0.0 0 0 0.00 Alternativ e2 55,273 – 10,00 0 22,636.5 – 10,000 55,273 – 2,819.9 7 Alternativ e3 120,00 0 – 15,00 0 52,500.0 – 15,000 120,000 –150.00 Alternativ e4 240,00 0 – 30,00 0 105,000. 0 – 30,000 240,000 –300.00 Regret table Maximum Alternative Event 1 Event 2 Regret Alternative 1 240,000 0 240,000 Alternative 2 184,727 10,000 184,727 Alternative 3 120,000 15,000 120,000 Alternative 4 0 30,000 30,000 a. Sue Pansky is a risk avoider and should use the maximin decision approach. She should do nothing and not make an investment in Starting...
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...[pic] BTEC Level 3 Subsidiary/Diploma in HEALTH & SOCIAL CARE UNIT 4 DEVELOPMENT THROUGH THE LIFE STAGES Name : …………………….. Target Grade ………………. Current Grade ……………… January – April 2014 |Pass |Merit |Distinction |Attempted |Complete | |P1 – Produce a series of posters that|M1 : Write a report that discusses |D1 : As a conclusion to your report, |P1 | | |describe physical, intellectual, |the nature – nurture debate in |evaluate how nature and nurture may | | | |emotional and social development for |relation to the development of the |affect the physical, intellectual, |M1 | | |each of the life stages of an |individual |emotional and social development of 2| | | |individual | |stages of the development on an |D1 | | | | |individual | | | |P2 – Using examples from someone’s | | |P2 | | |life, explain the potential...
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... | |Assessor’s Name: | | |Assessor’s Signature: | |Date: | | |Date Issued: |3rd February 2014 |Submission Date: |17th March 2014 | |Feedback Date: |In class 17th March 2014 | Final Submission date |12th May 2014 | List of criteria for this Assignment |Unit 9...
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...business’s costs. |a. |Tyler says his costs are $25,900, and Greg says his costs are $66,500. | |b. |Tyler says his costs are $25,000, and Greg says his costs are $65,000. | |c. |Tyler says his costs are $66,500, and Greg says his costs are $66,500. | |d. |Tyler says his costs are $75,000, and Greg says his costs are $41,500. | 2.) Suppose that a firm has only one variable input, labor, and firm output is zero when labor is zero. When the firm hires 6 workers it produces 90 units of output. Fixed cost of production are $6 and the variable cost per unit of labor is $10. The marginal product of the seventh unit of labor is 4. Given this information, what is the total cost of production when the firm hires 7 workers? |a. |$66 | |b. |$76...
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...BTEC National Certificate (Level 3) in Health and Social Care UNIT 11 ASSIGNMENT – Safeguarding Adults and Promoting Independence Student Name: Teacher: Ms Tumoe | Date assignment issued: 10th March 2014 Final Completion Date: 29th June 2014 | Welcome to the first of two Units as first year students that deals with the sensitive issues surrounding the need to safeguard adults, whilst understanding ensuring how the rights, independence and the wellbeing of adults are promoted through a person-centred multi-agency approach. In order to make sure that you complete the unit on time and meet all your deadlines, you will find that the assignment is broken down into key tasks. Each task will start with the part of the grading criteria that the task relates to, example P1, P2. It will finish with a deadline for the task to be completed. Introduction This unit looks at ways in which adults are supported and protected within the health and social care sector by practitioner’s whose main job role is working with adults. The unit covers sensitive subjects including physical, psychological, sexual and financial abuse. It aims to develop your understanding of the differing needs of people who use health and social care services. You will gain understanding of how to develop supportive relationships that respect individual rights, and also an understanding of how such relationships...
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...business’s costs. |a. |Tyler says his costs are $25,900, and Greg says his costs are $66,500. | |b. |Tyler says his costs are $25,000, and Greg says his costs are $65,000. | |c. |Tyler says his costs are $66,500, and Greg says his costs are $66,500. | |d. |Tyler says his costs are $75,000, and Greg says his costs are $41,500. | 2.) Suppose that a firm has only one variable input, labor, and firm output is zero when labor is zero. When the firm hires 6 workers it produces 90 units of output. Fixed cost of production are $6 and the variable cost per unit of labor is $10. The marginal product of the seventh unit of labor is 4. Given this information, what is the total cost of production when the firm hires 7 workers? |a. |$66 | |b. |$76...
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