Management Science

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Scheduling Independent Tasks on Parallel Processors
Management Science - Tập 12 Số 5 - Trang 437-447 - 1966
Michael H. Rothkopf
This paper considers the problem of scheduling m independent, immediately available tasks on n parallel processors. Each task has a waiting cost rate, that is a function of time, and a service time. There are no feasibility restrictions on the order in which the tasks are to be processed. An optimal scheduling rule is presented for the single processor scheduling of tasks with continuously discoun... hiện toàn bộ
N-Job, One Machine Sequencing Problems Under Uncertainty
Management Science - Tập 20 Số 1 - Trang 101-109 - 1973
Roger A. Blau
N jobs simultaneously arrive at a machine where they are to be processed. It is assumed that the processing times and due dates for the jobs are independent random variables whose distributions are known. The problem is to determine the optimal sequences of jobs, before processing begins, for various criteria of tardiness. It is shown that solutions are obtainable by ascertaining the optimal paths... hiện toàn bộ
Scheduling to Minimize the Number of Late Jobs When Set-Up and Processing Times are Uncertain
Management Science - Tập 19 Số 11 - Trang 1283-1288 - 1973
Stephen J. Balut
The n job, one-machine scheduling problem is considered where set-up and processing times are random and the objective is to minimize the number of late jobs. In the deterministic case, Moore's algorithm is known to produce an optimal schedule. A chance-constrained formulation of the nondeterministic problem is derived in which a job is processed if the probability that it will be completed prior ... hiện toàn bộ
A Renewal Decision Problem
Management Science - Tập 24 Số 5 - Trang 554-561 - 1978
Cyrus Derman, Gerald J. Lieberman, Sheldon M. Ross
A system (e.g., a motor vehicle) must operate for t units of time. A certain component (e.g., a battery) is essential for its operation and must be replaced each time it fails. There are n types of replacement components. A type i replacement costs Ci and has a random life with distribution depending on i. There is no salvage value associated with the particular component in use when the system te... hiện toàn bộ
Scheduling Jobs Subject to Nonhomogeneous Poisson Shocks
Management Science - Tập 26 Số 12 - Trang 1250-1257 - 1980
Michael Pinedo, Sheldon M. Ross
Consider n tasks which must be attempted in some order. To successfully complete any given task requires a random amount of time. However, we suppose that there are external events, called shocks, which occur according to a nonhomogeneous Poisson process. If no shocks occur while a task is being performed, then that task is considered a success. If a shock does occur, then work on that task ends a... hiện toàn bộ
Note—On Baluts Algorithm and NP-Completeness for a Chance-Constrained Scheduling Problem
Management Science - Tập 29 Số 3 - Trang 384-388 - 1983
Hiroshi Kise, Toshihide Ibaraki
In 1973, Balut gave an algorithm to solve an n-job one machine scheduling problem in which processing times are random variables and the objective is to minimize the number of tardy jobs with a specified certainty level. This note, however, presents an example for which his algorithm fails to give an optimal schedule. Furthermore, there does not seem to exist any such efficient algorithm because t... hiện toàn bộ
The Single Machine Problem with Quadratic Penalty Function of Completion Times: A Branch-and-Bound Solution
Management Science - Tập 24 Số 5 - Trang 530-534 - 1978
W. Townsend
N jobs are to be sequenced on a single machine, each job carrying a penalty cost which is a quadratic function of its completion time. The objective is to find a sequence which minimizes the total penalty. Criteria are developed for ordering a pair of adjacent jobs in a sequence and these are incorporated into a branch-and-bound procedure.
Does Firm Investment Respond to Peers’ Investment?
Management Science - Tập 67 Số 8 - Trang 4703-4724 - 2021
Maria Cecilia Bustamante, Laurent Frésard
We study whether, how, and why the investment of a firm depends on the investment of other firms in the same product market. Using an instrumental variable based on the presence of local knowledge externalities, we find a sizeable complementarity of investment among product market peers, holding across a large majority of sectors. Peer effects are stronger in concentrated markets, featuring more h... hiện toàn bộ
Peer Effects of Corporate Social Responsibility
Management Science - Tập 65 Số 12 - Trang 5487-5503 - 2019
Jie Cao, Hao Liang, Xintong Zhan
We investigate how firms react to their product-market peers’ commitment to and adoption of corporate social responsibility (CSR) using a regression discontinuity design approach. Relying on the passage or failure of CSR proposals by a narrow margin of votes during shareholder meetings, we find the passage of a close-call CSR proposal and its implementation are followed by the adoption of similar ... hiện toàn bộ
Valuing Internal vs. External Knowledge: Explaining the Preference for Outsiders
Management Science - Tập 49 Số 4 - Trang 497-513 - 2003
Tanya Menon, Jeffrey Pfeffer
This paper compares how managers value knowledge from internal and external sources. Although many theories account for favoritism toward insiders, we find that preferences for knowledge obtained from outsiders are also prevalent. Two complementary case studies and survey data from managers demonstrate the phenomenon of valuing external knowledge more highly than internal knowledge and reveal some... hiện toàn bộ
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