...Unit 9 P1 & P2 P1: Describe the types of networks available and how they relate to particular network standards and protocols LAN: This basically stands for local area network and it is also a computer network limited to a small area so it isn’t on a large geographical scale and some examples include the university, college or a home. There are some benefits for the users of LAN and it includes making it easier for the employees that are working in a company to communicate ad also share information. The most common type of LAN is the Ethernet which is known by most people. There are two types of Ethernets which are connecting an Ethernet cable to the hub and this will establish a connection and the other type of Ethernet is the wireless one which doesn’t require a cable. WAN: This stands for...
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...File C5-207 July 2007 www.extension.iastate.edu/agdm Elasticity of Demand E lasticity of demand is an important variation on the concept of demand. Demand can be classified as elastic, inelastic or unitary. An elastic demand is one in which the change in quantity demanded due to a change in price is large. An inelastic demand is one in which the change in quantity demanded due to a change in price is small. The formula for computing elasticity of demand is: (Q1 – Q2) / (Q1 + Q2) (P1 – P2) / (P1 + P2) If the formula creates a number greater than 1, the demand is elastic. In other words, quantity changes faster than price. If the number is less than 1, demand is inelastic. In other words, quantity changes slower than price. If the number is equal to 1, elasticity of demand is unitary. In other words, quantity changes at the same rate as price. Close substitutes for a product affect the elasticity of demand. It another product can easily be substituted for your product, consumers will quickly switch to the other product if the price of your product rises or the price of the other product declines. For example, beef, pork and poultry are all meat products. The declining price of poultry in recent years has caused the consumption of poultry to increase, at the expense of beef and pork. So products with close substitutes tend to have elastic demand. Figure 1. Elastic demand Elastic Demand Elasticity of demand is illustrated in Figure 1. Note that a change in price...
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...File C5-207 July 2007 www.extension.iastate.edu/agdm Elasticity of Demand E lasticity of demand is an important variation on the concept of demand. Demand can be classified as elastic, inelastic or unitary. An elastic demand is one in which the change in quantity demanded due to a change in price is large. An inelastic demand is one in which the change in quantity demanded due to a change in price is small. The formula for computing elasticity of demand is: (Q1 – Q2) / (Q1 + Q2) (P1 – P2) / (P1 + P2) If the formula creates a number greater than 1, the demand is elastic. In other words, quantity changes faster than price. If the number is less than 1, demand is inelastic. In other words, quantity changes slower than price. If the number is equal to 1, elasticity of demand is unitary. In other words, quantity changes at the same rate as price. Close substitutes for a product affect the elasticity of demand. It another product can easily be substituted for your product, consumers will quickly switch to the other product if the price of your product rises or the price of the other product declines. For example, beef, pork and poultry are all meat products. The declining price of poultry in recent years has caused the consumption of poultry to increase, at the expense of beef and pork. So products with close substitutes tend to have elastic demand. Figure 1. Elastic demand Elastic Demand Elasticity of demand is illustrated in Figure 1. Note that a change in price...
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...Chapter 1 Microeconomics of Consumer Theory The two broad categories of decision-makers in an economy are consumers and firms. Each individual in each of these groups makes its decisions in order to achieve some goal – a consumer seeks to maximize some measure of satisfaction from his consumption decisions while a firm seeks to maximize its profits. We first consider the microeconomics of consumer theory and will later turn to a consideration of firms. The two theoretical tools of consumer theory are utility functions and budget constraints. Out of the interaction of a utility function and a budget constraint emerge the choices that a consumer makes. Utility Theory A utility function describes the level of “satisfaction” or “happiness” that a consumer obtains from consuming various goods. A utility function can have any number of arguments, each of which affects the consumer's overall satisfaction level. But it is only when we consider more than one argument can we consider the trade-offs that a consumer faces when making consumption decisions. The nature of these trade-offs can be illustrated with a utility function of two arguments, but is completely generalizable to the case of any arbitrary number of arguments.1 An advantage of considering the case of just two goods is that we can analyze it graphically because, recall, graphing a function of two arguments requires three dimensions, graphing a function of three arguments requires four dimensions, and, in general, graphing...
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...1. Deadlock (“deadly embrace”) is a system-wide tangle of resource requests that begins when 2 or more jobs are put on hold. • Each job is waiting for a vital resource to become available. • Needed resources are held by other jobs also waiting to run but can’t because they’re waiting for other unavailable resources. • The jobs come to a standstill. • The deadlock is complete if remainder of system comes to a standstill as well. • 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...
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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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...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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...Supply, Demand and Equilibrium in Linear Equation The quantity demanded is the amount of a good that consumers want to buy at a given price, holding constant all other factors that influence purchases. The demand function shows the mathematical relationship between the quantity demanded , the price of the product, and other factors that influence purchases. A demand curve plots the demand function, again holding constant other factors. The quantity supplied is the amount of a good that firms want to sell at a given price, holding constant all other factors that influence firms’ supply decisions. The supply function shows the relationship between the quantity supplied, the price of the product, and other factors that influence the number of units supplied. An equilibrium exists if no market participant wants to change its behavior. In a market, equilibrium occurs at the price and quantity where the demand curve and the supply curve intersect. Example Problem: :SUPPLY AND DEMAND .AT $1.40 PER BUSHEL,THE DAILY SUPPLY FOR OATS IS 850 BUSHELS AND the daily demand is 850 bushels.when the price falls to $1.20 per bushel,the daily supply decreases to 350 bushels,and the daily demand increases to 980 bushels.assume that supply and demand equation are linear A-find the supply equation. B-find the demand equation. C-find the equilibrium price and quantity. Let x1 = 120 cents Let x2 = 140 cents For the supply equation: Let y1 = 350 Let y2 = 850 For the Demand equation:...
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...Unit 1 Government, Policies and the Public Services Learners Name: Assignment Title: 1 Roles and Levels of Government Assessment Criteria: P1,P2,M1 Unit Tutor: Mr Mitchell Assignment Issue Date: 9-9-13 Assignment Due Date: 24-10-13 Unit 1 Government, Policies and the Public Services Assignment 1 Learning Outcomes | 1 | Assessment Criteria | P1, P2, M1 | Assessment method | Powerpoint presentation with supporting written evidence | Suggested Reading 1. Axford B et al – Politics: An Introduction, 2nd Edition (Routledge, 2002) ISBN 0415226422/9780415226424 2. Peele G – Governing the UK, 4th Edition (Wiley-Blackwell, 2004) ISBN 0631226818/9780631226819 Journals 1. Fire 2. Police Review 3. Prison News 4. Soldier Magazines 1. The Economist 2. The Spectator 3. The Week Website 1. 10 Downing Street www.number10.gov.uk 2. Direct Gov – public services all in one place www.direct.gov.uk 3. Euro information from the Treasury www.euro.gov.uk 4. HM Treasury www.hm-treasury.gov.uk 5. Home Office www.homeoffice.gov.uk 6. Home Office – Working in the UK www.workingintheuk.gov.uk 7. Information for local government from central government www.info4local.gov.uk 8. Information on policies and standards for e-government www.cabinetoffice.gov.uk/govtalk.aspx 9. Independent software development and consultancy firm (provides links to central and local government websites) www.tagish.co.uk/links ...
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...Week 3 Laboratory Week 3 Lab Part 1: Automate Digital Evidence Discovery Using Paraben’s P2 Commander Learning Objectives and Outcomes Upon completing this lab, students will be able to complete the following tasks: * Open an existing case file using P2 Commander * Analyze the data in the image and the files saved in the case * Sort and identify evidence file types in a case using Paraben's P2 Commander forensic tool * Use P2 Commander to identify information for potential evidence contained in chat logs such as Skype chat * Analyze the contents of user profiles and data using the P2 Commander browser Week 3 Lab Part 1 - Assessment Worksheet Overview View the Demo Lab available in the Practice section of Learning Space Unit 5 and then answer the questions below. The video will demonstrate the use of Paraben's P2 Commander and outline the different forensics capabilities of the tool. Lab Assessment Questions & Answers 1. When talking about Information Security, what does the 'CIA' stands for? CIA in information security stands for confidentiality, integrity and availability. 2. When would it be a good practice to classify data? It would be a good practice to classify data when you need to extract files from a hard drive or system for investigating in order to accurately organize the findings. 3. What is Security classification? Security classification is the security level assigned to a government document, file...
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...Portfolio Modeling 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...
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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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...is lower than that of its trading partner. 1.1 Technology and markets The Ricardian model assumes that production uses only 1 input (labor), with constant returns to scale. This assumption means that the technology in each country and each sector is entirely determined by the labor requirement per unit of output. The other assumptions are that (a) labor moves freely between sectors within a country, but (b) labor cannot move between countries. Assumption (a) implies that in a particular country, the wage must be the same in both sectors; assumption (b) means that the wage need not be the same (and typically is not the same) in the two countries. In addition, all agents are price takers, i.e. there is perfect competition. In my example, the unit labor requirements are unit labor requirement Corn (good 1) US Canada au = 1 1 Umbrellas (good 2) au = 1 2 ac = 3 ac = 6 1 2 Table 1, Labor requirements 1 (Corn is good 1, umbrellas are good 2. Subscripts indicate commodity, superscripts indicate country.) I assume that both goods require one unit of labor to produce one unit of output in the US. This assumption is without loss of generality; it merely amounts to a choice of units....
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...DBM 449 Laboratory Procedures iLab 6 Answers Follow Below Link to Download Tutorial https://homeworklance.com/downloads/dbm-449-laboratory-procedures-ilab-6-answers/ For More Information Visit Our Website ( https://homeworklance.com/ ) Email us At: Support@homeworklance.com or lancehomework@gmail.com I. OBJECTIVES 1. Understand and become familiar with the SQL Analytical Extensions. 2. Learn to create, use, and maintain materialized views, and their functional equivalents. 3. Effectively apply Advanced Aggregate SQL Operations, such as GROUP BY ROLLUP to solve business intelligence questions and analytical processing problems. II. PARTS LIST 1. EDUPE-VT Omnymbus Virtual Machine Environment (https://devry.edupe.net:9090/) and/or: 2. MySQL (dev.mysql.com/downloads) III. PROCEDURE Scenario and Summary For the lab this week, we are going to look at how the ROLLUP and CUBE extensions available in SQL can be used to create query result sets that have more than one dimension to them. Both of these extensions are used in conjunction with the GROUP BY clause and allow for a much broader look at the data. To record your work for this lab use the lab report found at the end of this document. As in your previous labs, you will need to copy/paste your SQL statements and results into this document. Upon completion and prior to the due date, submit this document to the appropriate Dropbox. iLAB STEPS STEP 1: Setting Up For this...
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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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