Operations Research : Applications and Algorithms
4th Edition
ISBN: 9780534380588
Author: Wayne L. Winston
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Implement a blog server in C
1. Implement get of all posts (GET /posts), and individual post (GET /post/1)
2. Implement creation of post (POST /posts). Allow the user to enter their name, but check that they are a valid user in db. Do error checking! The user should not specify the post id; that should come from the database.
3. Write three html files to test this; serve them with the blog server: index.html shows the list of posts with a link to each. post.html shows a post. publish.html allows the creation of a new post. Link these together as a user would expect!
Can someone help me with the following, it's revision for an exam I'm doing. If your explaining it could you please provide detailed steps of why you did what you did so I know how to do it if it comes up in the real thing!
Thank you so much! :)
An IT administrator is interested in studying server traffic. He believes that the time (inminutes) between requests being sent to a server can be well modelled using a Weibulldistribution with parameters α = 2 and β = 1
b) The median arrival time is defined to be the time for which the probability of beingless than this value is 0.5. Calculate the median time between requests
An issue that we have glossed over so
far is how the client locates the server in
remote procedural calls. One method is
to hardwire the network address of the
server into the client. The trouble with
this approach is that it is extremely
inflexible. If the server moves or if the
server is replicated or if the interface
changes, numerous programs will have
to be found and recompiled. To avoid
this limitation, which kind of binding is
appropriate to match up clients and
servers? Also explain basic procedure of
such binding.
OO
6:46 PM
Chapter 20 Solutions
Operations Research : Applications and Algorithms
Knowledge Booster
Similar questions
- Write a C program mexp that multiplies a square matrix by itself a specified number of times. mexp takes a single argument, which is the path to a file containing a square (k × k) matrix M and a non-negative exponent n. It computes Mn and prints the result. Note that the size of the matrix is not known statically. You must use malloc to allocate space for the matrix once you obtain its size from the input file.To compute Mn , it is sufficient to multiply M by itself n −1 times. That is, M3 = M ×M ×M . Naturally, a different strategy is needed for M0 .Input format The first line of the input file contains an integer k. This indicates the size of the matrix M , which has k rows and k columns.The next k lines in the input file contain k integers. These indicate the content of M. Each line corresponds to a row, beginning with the first (top) row.The final line contains an integer n. This indicates the number of times M will be multiplied by itself. n is guaranteed to be non-negative, but…arrow_forwardRCS adopts a reverse delta approach for storing multiple versions of a file. For example, assume a file has three revisions, 1.1, 1.2, and 1.3, RCS stores the file as of version 1.3, then, the differences between 1.2 and 1.3, and the differences between 1.1 and 1.2. When a new version is created, say 1.4, the difference between 1.3 and 1.4 is computed and stored, and the 1.3 version is deleted and replaced by 1.4. Explain why RCS does not simply store the initial version (in this case 1.1) and the differences between each successive version.arrow_forwardConsider the adjacency matrix below. Upload a plcture (it can be hand drawn) of the adjacency list of the graph. Note: File size must not exceed 1 MB. * A C. 1 1 C 1 1 1 1. 1, 1. 1. 1. A, D.arrow_forward
- Consider a file with a secondary dense index structure on a non-ordering key field where 120,000 records stored on a disk with block size of 2048 bytes. Length of every record is of fixed and un-spanned. Record size is 150 bytes. Also consider, every record of index file is 20 bytes long. Now assume every block access requires 0.015 second. Can you measure the average improvement in time?arrow_forwardWhat is the security requirement on password hashing? Given a password w, its hash is calculated as . This question is about the security requirement on function h. (a) Can we use any function as h for password hashing? For example, can we use the "mod 100" function, which is a common computer science function? (Given any integer value x, "mod 100" function works by "x mod 100," which is a value between [0, 99]; for example, if x = 105, x mod 100 = 5; x = 1000000, x mod 100 = 0;) (b) If not, what is the security requirement on h?arrow_forward5. Suppose that a disk drive has 40 cylinders, numbered 0 to 40. The drive is currently serving a request at cylinder 20 (the previous request served was at cylinder 19) when the last of these requests is made with none of these requests yet served. The queue of pending requests, in FIFO order, is 5, 25, 18, 3, 39, 8, and 35. A seek takes 5ms per cylinder movement. Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending request and also calculate the total seek time needed to these requests, for each of the following disk-sc ling algorithms? Explain with the help of a diagram in each case. [2X4] a. FCFS b. SSTF c. SCAN d. LOOKarrow_forward
- Consider user accounts on a computer system with a Web server configured to provide user Web areas. In general, this uses a standard directory name, such as “public_html,” in a user’s home directory. However, access control needs to be properly set to allow users (with or without user accounts on the system) to browse the webpages. Assuming there are one main page (index.html), two pictures files (a.jpg and b.jpg) stored in an sub-directory (Image) and one pdf file (c.pdf) stored in an sub-directory (Doc), all under the public_html. (a) Specify the access matrix for each directory (excluding home directory) and files that allows everyone to view the webpage. (b) Draw a directed graph that represented to the access matrixarrow_forwardAs an example, think of a database for an airline that uses something called "snapshot isolation." If the overall performance of the airline can be improved, it's possible that non-serializable executions might be acceptable.arrow_forwardConsider user accounts on a computer system with a Web server configured to provide user Web areas. In general, this uses a standard directory name, such as “public_html,” in a user’s home directory. However, access control needs to be properly set to allow users (with or without user accounts on the system) to browse the webpages. Assuming there are one main page (index.html), two pictures files (a.jpg and b.jpg) stored in an sub-directory (Image) and one pdf file (c.pdf) stored in an sub-directory (Doc), all under the public_html. Specify the access control for each directory and files that allows everyone to view the webpage.arrow_forward
- Consider the adjacency matrix below. Upload a picture (it can be hand drawn) of the adjacency list of the graph. Note: File size must not exceed 1 MB.* A B C 1 1 1 1 E. 1. A,arrow_forwardAnswer the following questions about a scheduling system for assigning chefs to cooking slots. Within the system, every single chef and every single cooking slot is assigned an integer ID. These IDs start with 1 and increment by 1. That is, if there is a chef with ID equal to 6, there must be chefs with IDs equal to 1, 2, 3, 4 and 5. The same restriction applies to the cooking slot IDs. Note that any cooking slot not assigned a chef will be covered by Sara and her amazing cooking skills. \begin{enumerate} \item Consider the chefs with IDs ranging from $p$ to $q$ inclusive, where $p \leq q$, and consider the cooking slots with IDs ranging from $r$ to $s$ inclusive, where $r \leq s$. How many distinct functions for assigning these chefs to cooking slots are there? (The chefs are the domain and the cooking slots are the codomain.) \item Consider the chefs and cooking slots with IDs ranging from $p$ to $q$ inclusive, where $p \leq q$. How many distinct functions for assigning…arrow_forwardImplement a city database using a BST to store the database records. Each database record contains the name of the city (a string of arbitrary length) and the coordinates of the city expressed as integer x- and y-coordinates. The BST should be organized by city name. Your database should allow records to be inserted, deleted by name or coordinate, and searched by name or coordinate. Another operation that should be supported is to print all records within a given distance of a specified point.Collect running-time statistics for each operation. Which operations can be implemented reasonably efficiently (i.e., in O(log n) time in the average case) using a BST? Can the database system be made more efficient by using one or more additional BSTs to organize the records by location?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Operations Research : Applications and AlgorithmsComputer ScienceISBN:9780534380588Author:Wayne L. WinstonPublisher:Brooks Cole
Operations Research : Applications and Algorithms
Computer Science
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Brooks Cole