Manufacturing Systems Design And Analysis 1st Edition B. Wu - Solutions

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Copy the basic structure of time_flies and model one cylinder of a simple combustion engine. Modify the body of the thread function to represent physical actions using simple delays. Use std::cout statements to indicate progress.Suggested activities include opening the intake, adding fuel and air,
Modify time_flies to see how much time you can model(days? months?). See how it changes with the time resolution.
Examine, compile, and run the example time_flies, found on the website.
Write a module from scratch using what you know. The output should count down from 3 to 1 and display the corresponding words“Ready”, “Set”, “Go” with each count. Compile and run.
Add a second instantiation of simple_process_ex.Compile and run.
Add a second SC_THREAD to simple_process_ex. Be sure the output message is unique. Compile and run.
Rewrite simple_process_ex using SC_HAS_PROCESS.Compile and run the code.
Compile and run the simple_process_ex example from the website. Add an output statement before sc_start() indicating the end of elaboration and beginning of simulation.
Examine, compile, and run the example addition. What would it take to fix the problems noted? Try adding various sizes of sc_bigint.
Write a program to generate 100,000 random values and compute the squares of these values. Do the math using each of the following data types: short, int, unsigned, long, sc_int, sc_uint, sc_bigint, sc_bigint, sc_fixed. Be certain to generate numbers distributed over the entire range of
Write a program to read data from a file using the unified string representation and store in an array of sc_uint. Output the values as SC_DEC and SC_HEX_SM.
Examine, compile, and run the examples from the website, datatypes and uni_string_rep. Note that although these examples include systemc.h, they only use data types.
What is the use of the undo and redo log?
The dynamic voting algorithm is applied to a network of five sites. The network is partitioned into {A, B, C} and {D, E} after six updates. Two updates have been performed at {A, B, C} before another partition occurs:{ A : (8,3), D : (6,5) } { B : (8,3), C : (8,3), E : (6,5) }Clearly, { B, C, E }
The two extremes of voting occur when r = 1 and when r = n/2, where n is the total number of votes. What are the differences in terms of performance for these two cases?
Consider a system with 31 nodes. Organize them in a two-level hierarchy and specify the hierarchical voting parameters for it.
Consider a system with 10 sites. Determine all the possible read and write quorum pairs.Provide some guidelines on the selection of read and write quorum among all the possible ones.
Consider two concurrent transactions T 1and T 2which write the same data object x and perform concurrency control using two-phase locking. Show that if T 1wrote x before T 2, then the lock-point of T 1must precede the lock-point of T 2. (The lock-point of a transaction is the stage at which it has
Show that being only well-formed does not guarantee serializability.
Show that if there is at most one conflict between any two transactions, any interleaved execution will be serializable. Provide a counter example in which there are two conflicts.
Discuss the pros and cons of implementing a distributed database using (1) the unreplicated approach, (2) the fully replicated approach, and (3) the partially replicated approach.
We have the following sequence of read and write requests at data object x:write(x, 2), read(x, 1), read(x, 4), write(x, 3), write(x, 5), read(x, 6)Show the result of timestamp-based concurrency control on each read and write request and the value of Time w(x) and Time r(x) after executing each
Initially timestamps on x are Time r(x) = 3 and Time w(x) =
Point out serializable schedules in the following L1= w 2(y)w 1(y)r 3(y)r 1(y)w 2(x)r 3(x)r 3(z)r 2(z)L 2= r 3(z)r 3(x)w 2(x)r 2(z)w 1(y)r 3(y)w 2(y)r 1(y)L 3= r 3(z)w 2(y)w 2(x)r 1(y)r 3(y)r 2(z)r 3(x)w 1(y)L 4= r 2(z)w 2(y)w 2(x)w 1(y)r 1(y)r 3(y)r 3(z)r 3(x)
For the following two transactions:T1 begin 1 read A (obtaining A_balance)2 write A_balance - $10 to A 3 read B (obtaining B_balance)4 write A_balance+$10 to B end T2 begin 1 read A (obtaining A_balance)2 write A_balance+$5 to A end(a) Provide all the interleaved executions (or schedules).(b) Find
In the extended DE algorithm with exchange parameter l, relate l to the processing speed of each processor. Try to balance the workloads of nodes u (with processing speed s u) and v (with processing speed s v). How is parameter l selected in this case?
Apply the extended dimension exchange process to the colored graph derived from Problem 4.Show the load of each node after each round.
In a faulty 4-cube, links 0 * 11, *100, and 00 * 1 are faulty. The load distribution among the nodes (from node 0 to node 15) is: 4, 1, 6, 2, 7, 12, 8, 4, 23, 1, 5, 12, 2, 0, 12, and 2, respectively.Show how the extended dimension exchange method balances the loads in the system.
Show one or two applications such that• Static load distribution is not sufficient.• Dynamic load distribution is not necessary.• Both static and dynamic load distribution should be applied.
Modify Gerasoulis and Yang’s granularity definition g(x) in a system where intraprocessor cost is nonzero. g(x) should be defined in such a way that Gerasoulis and Yang’s result is still valid.
Prove Gerasoulis and Yang’s result for the 2-processor scheduling problem (see Figure 9.6).Note that each communication cost and node cost should be represented by variables l and c, respectively.
Repeat Problem 7 for (a) 16 processors, (b) 4 processors, and (c) 2 processors.
Use fault-secure scheduling to assign a 4-level complete binary tree to m = 2h = 8 processors.
Consider the following two periodic tasks (with the same request time)• Task T1: c1 = 4, t1 = 9• Task T2: c2 = 6, t2 = 14(a) Determine the total utilization of these two tasks and compare it with Liu and Layland’s least upper bound for the fixed priority schedule. What conclusion can you
Find an embedding of the interaction graph in Figure 9.10 on a 3 × 3 mesh with a minimum congestion. The dilation is limited to two and load to one.
Determine a schedule of the interaction graph in Figure 9.10 on a 3 × 3 mesh with a minimum cardinality.
Compare the following pairs of related concepts:• Static load distribution vs. dynamic load distribution.• Task precedence graph vs. task interaction graph.
Illustrate the correctness of the agreement protocol for authenticated messages using a system of four processes with two faulty processes. You need to consider the following two cases:(a) The sender is healthy and two receivers are faulty (the remaining receiver is healthy).(b) The sender is
State the main advantages of hybrid checkpointing over synchronous checkpointing (or asynchronous checkpointing).
Explain the differences between a lost message and an orphan message. Why is an orphan message more severe than a lost message?
Propose an extended N-version programming for a set of communicating processes. Discuss potential problems (if any) in such an extension. Compare your extended N-version programming with conversation which can be considered as an extended recovery block.
Demonstrate that the algorithm in Section 8.5.2 works for the case when n = 4 and k = 1 by constructing a table similar to Table 8.2.
Consider the consensus problem in a non-totally decentralized control system where the system is partitioned into a set of units. A centralized control method (majority voting) is used for the PEs within each unit and a decentralized method is used to get a global decision among these units. The
Consider a distributed system with at most k fail-stop processors and at most 1 fail-insane processor which exhibits Byzantine type of faults.(a) At least how many processors are required to ensure that all healthy processors decide upon the same plan of action?(b) Assume the maximum network delay
Discuss the differences between logs and checkpoints. What are the pros and cons of logging messages?
Verify that cases (1, 0, 0), (0, 1, 0), (0, 0, d), where each element represents the state of X, Y, and S in interval I i, correspond to rollback after one interval of concurrent retry in Pradhan and Vaidya’s approach for roll-forward recovery.
Show that stablesend(1) and stablewrite(1) cannot cover decay events and crashes while tablesend(2) and stablewrite(2) can.
Describe the differences between a fault-tolerant system and a fail-safe system. Provide an example for each of these two systems.
Use a practical example to illustrate the differences among faults, errors, and failures.
Consider a multicasting with s = 1001, d = {1110, 0100, 1101}, anda, set of faulty nodes{0000, 0101, 0111} in a 4-cube.• Construct a multicast tree based on SLBM.• Construct a multicast tree based on MSLBM.• Compare these two multicast trees in terms of traffic steps used.
Given a 4-cube with four faulty nodes 1111, 0101, 0100, 0011:• Calculate the safety level of each node.• Calculate the safety vector of each node.
Construct an injured spanning binomial tree in the 4-cube of Figure 7.13:• Using node 1000 as the root node.• Using node 1111 as the root node.
Consider a 2-d mesh with faulty blocks, assuming that node (0, 0) is the source and node (i, j) is the destination. Prove that if there is no faulty block that goes across the X and Y axes, then there exists at least one minimal path from (0, 0), i.e., the length of this path is |i| + |j|.
Suppose that we use Li’s extended e-cube routing algorithm to send a message from s = 1011 to d = 0100. Find all the legal shortest paths.
Given a 8 x 8 mesh with eight faulty nodes (2,4), (2, 6), (3, 5), (3,3), (3,7), (4,4), (4,6), (5,5):• Find all the faulty blocks based on two different definitions of safe/unsafe nodes.• Find orthogonal convex polygons that cover all these faulty nodes based on the concept of enable/disable
In the origin-based routing given the locations of the source, destination, and origin nodes, find the total number of different paths. Explain how the location of the origin affects the number of different paths.
=+v1. explain the nature and context of manufacturing;
=+2. outline the need for and importance of manufacturing industry;
=+3. highlight the characteristics of new developments in manufacturing technology development;
=+4. describe the environmental pressures on today's manufacturing firms;
Show the corresponding routing paths using (1) positive-last, (2) west-first, (3) north-last, and(4) negative-first routing for the following unicasting:(a) s = (2, 1) and d = (5, 9)(b) s = (7, 1) and d = (5, 3)(c) s = (6, 4) and d = (3, 1)(d) s = (1, 7) and d = (5, 2)
=+5. have a preliminary appreciation of the potentials and limitations of the newly developed manufacturing technologies;
=+6. recognize the need for a systems approach in manufacturing modernization;and
=+7. outline the content of manufacturing systems analysis, and the interrelationships of the topics involved.
=+1. Study Fig. 1.1 carefully, and then answer the following questions:
=+(a) What are the similarities among these manufacturing system models?
=+(b) What are the differences? In your opinion, what are the reasons for these differences?
=+2. Consider a manufacturing system that you are familiar with. Identify the inputs to and the outputs from the system and then illustrate the overall system in a way similar to that shown in Fig. 1.1.
=+3. Based on the model given in Fig. 1.3, how did Keynes view the position of manufacturing industries in the macroeconomy of a nation?
=+4. In your own words, describe how and why manufacturing is important to a nation.Describe the economic and social significance of the manufacturing industry you have analysed in Question 2.
=+5. What are the main features of the three stages of industrial development in manufacturing? How were the first two significant from a socioeconomic viewpoint, and what in your opinion will be the socioeconomic significance of ongoing developments?
=+6. What are the lessons to be learnt from each of the case studies in section 1.4?
=+According to Ettlie (1988): 'Reports of failures appear from time to time in the literature and in private, but they are not really useful to study.' Do you agree?
Consider the following turn models:• West-first routing. Route a message first west, if necessary, and then adaptively south, east, and north.• North-last routing. First adaptively route a message south, east, and west; route the message north last.• Negative-first routing. First adaptively
=+7. Summarize the lessons you have learnt from this chapter by writing a short essay entitled 'Can technology solve all the problems of manufacturing industryT.
=+8. Recently the need for a multidisciplinary engineering function called manufacturing systems engineering (MSE) has been recognized.
=+ What are the problems and background which have caused such a new wave? What are the objectives and contents of MSE?
=+As a manufacturing systems engineer. how do you see your role in today's manufacturing industry?
=+1. define and/or explain the following basic systems concepts: component, objective, wider system, emergent property, relationship, hierarchy, environment, system perspective, process, boundary, and sub-system;
=+2. use the technique of input-output analysis to describe the structure and contents of a system of concern;
=+3. identify and contrast the following types of systems:physical/conceptual static/dynamic open/closed continuous/discrete stochastic/deterministic.
=+4. discuss in general terms the principles, structure and problems of control, and give examples of feedback controls which exist in manufacturing systems;
=+5. explain the basic principles of information theory, discuss the structure, requirements and problems of communication within organizations, and indicate their implications in the area of advanced manufacturing systems;
=+6. apply the structured procedure for system identification and description to a problematic situation to analyse and express the content of the situation;
=+7. use the prototype system model as an archetypal norm so as to check the content of a problematic situation; and
Determine two deadlock-free routing algorithms for the 3 x 4 torus network. Each link is bidirectional and no virtual channel can be used.
=+8. outline and explain, from a systems viewpoint, the necessary conditions for the effective operation of manufacturing organizations.
=+I. Describe some collections of elements which conform to the definition of a system given in this book. Identify their system components and system objectives. Give examples of collections of elements which do not conform to the definition and outline the reasons why they cannot be regarded as
=+2. What is the wider system of a manufacturing company? How does this influence company operations?
=+What are the environmental influences and their likely effects on the company?
=+What are the emergent properties of a manufacturing company which its individual departments do not possess?
=+3. What are the possible effects of the Channel Tunnel project on its environment?
=+ As manufacturing systems engineers, what might we learn from this?
=+4. What are the differences between open and closed systems?
=+Why is the distinction between these two types of system important to our study? Give examples of each.Also identify and contrast a static and a dynamic system; a continuous and a discrete system; and a deterministic and a stochastic system.
=+5. What is meant by 'control' and why is it needed? Summarize the basic principles of feedback control.
Wu and Fernandez (1992) gave the following safe and unsafe node definition: A nonfaulty node is unsafe if and only if either of the following conditions is true: (a) There are two faulty neighbors, or (b) there are at least three unsafe or faulty neighbors. Consider a 4-cube with faulty nodes 0100,
=+6. 'Delay' is usually an undesirable situation in our work and everyday lives. Outline the reasons for this in terms of control.
=+7. Give an example of feedback control existing in an organization with which you are familiar (refer to Fig. 2.9).
=+8. Discuss the role of sales forecasting in a production organization.

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Manufacturing Systems Design And Analysis 1st Edition B. Wu - Solutions

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