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- Operations research (644)
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Articles 1 - 30 of 645
Full-Text Articles in Business Administration, Management, and Operations
An Automation Laboratory For Mba Education In Advanced Manufacturing Management, Henry C. Co, Shih-Ken Chen
An Automation Laboratory For Mba Education In Advanced Manufacturing Management, Henry C. Co, Shih-Ken Chen
Research Reports from the Department of Operations
We describe an automation laboratory for MBA education. The laboratory facility includes an FMS emulator which uses actual microprocessor-based hardware for computer control, and computer simulation to emulate the signals emanating from the various machining centers. [Published circa 1987-1989.]
A Mean Value Analysis Model For Analyzing Manufacturing Systems: With Emphasis On Layout And Material Flow, Albert Wu, Henry C. Co, Arnold Reisman
A Mean Value Analysis Model For Analyzing Manufacturing Systems: With Emphasis On Layout And Material Flow, Albert Wu, Henry C. Co, Arnold Reisman
Research Reports from the Department of Operations
Queuing-network models yield closed-form analytical solutions and can provide decision makers valuable insights about the systems modeled. This paper presents FMS-Q, a mean-value analysis model of job-shop like systems such as flexible manufacturing systems. FMS-Q models the layout and the output queues at each node of the FMS explicitly. Lastly, a simulation study using Caterpillar data is presented to compare the relative performance of several queueing models of FMS. Specifically FMS-Q performance is compared to that of CAN-Q and MVA-Q using the same inputs. [Published circa 1986-1989.]
A Frequency Domain Step Size Estimation Procedure For Path Search Simulation Optimization Algorithms, Sheldon H. Jacobson, Lee W. Schruben
A Frequency Domain Step Size Estimation Procedure For Path Search Simulation Optimization Algorithms, Sheldon H. Jacobson, Lee W. Schruben
Research Reports from the Department of Operations
A frequency domain approach for step size estimation in path search simulation optimization algorithms is presented. The approach is based on Newton's method. Computational comparisons with stochastic approximation step sizes are included which indicate that the two methods can be effectively used together. The frequency domain approach can be used first to efficiently move into a neighborhood of the local optima; stochastic approximation can then improve the accuracy of the estimated optima. [Published circa 1998-1990.]
Predicting Doctorate Production In The Usa: Some Lessons For Long-Range Forecasters, Bruce Pollack-Johnson, Burton V. Dean, Arnold Reisman, Alfred R. Michenzi
Predicting Doctorate Production In The Usa: Some Lessons For Long-Range Forecasters, Bruce Pollack-Johnson, Burton V. Dean, Arnold Reisman, Alfred R. Michenzi
Research Reports from the Department of Operations
The nine major independently conducted forecasts of doctoral degree production for the 1970's shared a consistently high bias, although one was quite accurate. In this paper we compare the forecasting models based upon these results and discuss the implications for long-range forecasting. We show that the bias was mainly due to a common core assumption (exemplifying "assumption drag") that students would pursue degrees at clo-se to the existing rates in spite of decreasing traditional demand for graduates. The results also indicate the value of simple models and eclectic forecasting methods, the desirability of robust causal models and dangers of extrapolative …
Logistics Network Design: Modelling And Informational Considerations, Ronald H. Ballou
Logistics Network Design: Modelling And Informational Considerations, Ronald H. Ballou
Research Reports from the Department of Operations
This article discusses the application of modelling to the problem of planning the design a business logistics network. The models are categorized and selected ones of particular importance are illustrated and evaluated against practice. Suggestions on how to effectively manipulate location-related data are given. An attempt is made to assess which models have worked well in practice and to give some personal assessments as to the directions that modelling should take to be better accepted by practitioners and managers. [Published circa 1988-1990.]
Analysis Of Runway Operations, David A. Schrady
Analysis Of Runway Operations, David A. Schrady
Research Reports from the Department of Operations
This paper deals with the questions of runway capacity and delays at an air terminal. Analytic models are developed to calculate the landing capacity and operations (landings and take-offs) capacity. A feature of the analysis is the derivation of the runway threshold arrival distribution of landing aircraft, which then allows access to the departure capacity. Arrival and departure delay expressions are also given and serve to dramatically illustrate capacity limitations. The analysis brings out the factors limiting system capacity and may be used to program system improvements as traffic increases or as the mix of aircraft using the facility changes …
A Methodology For Configuring Cellular Manufacturing Systems, Henry C. Co, A. Abdelaziz
A Methodology For Configuring Cellular Manufacturing Systems, Henry C. Co, A. Abdelaziz
Research Reports from the Department of Operations
This paper presents a three-step procedure for configuring machines into manufacturing cells, assigning the cells to process specific sets of jobs. First, operations are assigned, with the objective of balancing the workload. Then, we extended King's algorithm for cluster analysis. Finally a direct-search algorithm for defining the composition of manufacturing cells, the method of Partition Formation (PF), is presented. A comprehensive example is also included. [Likely published circa 1984-1988.]
A Taxonomy Of Mis, David Majd
A Taxonomy Of Mis, David Majd
Research Reports from the Department of Operations
A perusal of the management information systems (MIS) literature or attendance at a major conference calls attention to the diversity of the discipline and the need to have some larger frame of reference in which to understand MIS research. This paper utilizes two MIS research frameworks to demonstrate the role of integrative thought in understanding and guiding MIS research. A literature review is used to support the claim that the benefits of improved recall, more effective hypothesis generation, wiser allocation of research resources and better interdisciplinary communication can result from the use of these frameworks. [Published circa 1988-1990.]
Quality Control Of A Unreliable Open Queueing Network Flexible Manufacturing System : With Scrapping And Infinite Buffer Capacity, Lie-Fern Hsu, Charles S. Tapiero
Quality Control Of A Unreliable Open Queueing Network Flexible Manufacturing System : With Scrapping And Infinite Buffer Capacity, Lie-Fern Hsu, Charles S. Tapiero
Research Reports from the Department of Operations
An unreliable flexible manufacturing system described in terms of a multi-parts open queueing network is considered. Using such a system and manufacturing cell's unreliability, this paper provides an estimate of parts' AOQ's (average outgoing quality). In addition, a framework which integrates quality control and assesses in terms of quality and the operational characteristics of flexible manufacturing systems is devised. [Published circa 1986-1989.]
A Study Of The Effect That Title Mix On Store Shelves Has On Magazine Sales, Arnold Reisman, Lowell Lorenzo, Michael Sutila
A Study Of The Effect That Title Mix On Store Shelves Has On Magazine Sales, Arnold Reisman, Lowell Lorenzo, Michael Sutila
Research Reports from the Department of Operations
This study examines the distribution practices of the George R. Klein News Company, a magazine distributor in Northeast Ohio operating on a consignment basis. The magazine industry faces challenges, including high return rates from retail outlets and frequent sell-outs of popular titles. This paper explores a statistical experiment designed to address these issues by testing the hypothesis that adjusting distribution—reducing copies of low-seller titles and increasing copies of high-seller titles—can improve overall sales performance. The study aims to optimize magazine allocation to individual retailers, balancing supply and demand more effectively. [Published circa 1986-1989.]
Heuristics: Rules Of Thumb For Logistics Decision Making, Ronald H. Ballou
Heuristics: Rules Of Thumb For Logistics Decision Making, Ronald H. Ballou
Research Reports from the Department of Operations
A careful look is taken at the use of heuristics, or rules of thumb, in logistics decision making. These rules that guide computational procedures to find satisfactory solutions quickly are vital to solving many logistics problems. Heuristics are defined and appraised as a procedure in contrast with simulation and optimization methods. Examples are given of the use of heuristics in both strategic and operating problem types. How to develop heuristics is also discussed.
A Strategic Planning Process For Barter Or Other Compensatory Arrangements, Bardia Kamrad, Arnold Reisman
A Strategic Planning Process For Barter Or Other Compensatory Arrangements, Bardia Kamrad, Arnold Reisman
Research Reports from the Department of Operations
This paper introduces a strategic planning process model tailored for barter and other compensatory arrangements, expanding upon other research on the topic. The model integrates concepts from utility theory, addressing scenarios with multiple potential outcomes, decision makers, and criteria. A cost-benefit analysis framework is employed, utilizing decision tables to evaluate and optimize these complex arrangements. The approach provides a systematic methodology for decision-making in contexts involving multiple variables and stakeholders. [Published circa 1988-1990.]
A Taxonomy Of Simulation Languages For Design And Analysis Of Computer-Integrated Manufacturing Systems, Arnold Reisman, Henry C. Co, Albert Wu
A Taxonomy Of Simulation Languages For Design And Analysis Of Computer-Integrated Manufacturing Systems, Arnold Reisman, Henry C. Co, Albert Wu
Research Reports from the Department of Operations
Simulation is a very robust and versatile system analysis technique. However, many common functionalities of the simulation methodology are not available in general-purpose computer languages. Model building is usually a tedious, time-consuming, and error-prone process. To alleviate these problems, special-purpose simulation languages have been developed to support system analysts. This paper presents a taxonomy of special-purpose simulation languages, with emphasis on their applications in designing and analyzing Flexible Manufacturing Systems (FMS). [Likely published circa 1990?]
Batching And Tool Configuration Of Flexible Manufacturing Systems, Henry C. Co, Shih-Ken Chen, Jeanette S. Biermann
Batching And Tool Configuration Of Flexible Manufacturing Systems, Henry C. Co, Shih-Ken Chen, Jeanette S. Biermann
Research Reports from the Department of Operations
We present some simple mathematical models for solving the problems of hatching and configuring the tool magazines of flexible manufacturing systems. Parts are hatched in an FMS to join different queues before they are introduced to the shop floor. The FMS is configured for each queue and there is a switch-over involved. [Likely published circa 1984-1988.]
Some Observations On The Optimal Material Removal Rate In Unreliable Metal Cutting Processes, Anlong Li, Wenyaw Chan, Henry C. Co
Some Observations On The Optimal Material Removal Rate In Unreliable Metal Cutting Processes, Anlong Li, Wenyaw Chan, Henry C. Co
Research Reports from the Department of Operations
This paper examines the foundation for economic analysis in unreliable metal cutting processes. We present some results on the machining parameter optimization problem, explaining the effect of the cutting speed on tool life and the rate of acceptance. [Published circa 1985-1988.]
Multi-Item Production And Inventory Management Under Price Uncertainty, Bani P. Banerjee, S. Sankar Sengupta, Gifford H. Symonds
Multi-Item Production And Inventory Management Under Price Uncertainty, Bani P. Banerjee, S. Sankar Sengupta, Gifford H. Symonds
Research Reports from the Department of Operations
A model is presented for the derivation and implementation of optimal linear decision rule for a firm producing and dealing in a number of interacting products, and possessing partial influence on their prices. The behavior of a multi-item production-inventory complex is represented as the dynamics of suitably defined state variables under the influence of decision rules that are stable and linear in the state variables, but otherwise unspecified. The dynamical equations are stochastic owing to the presence of stochastic processes in the forcing terms. The statistical properties of these processes, together with the decision rules, determine the statistics of the …
Machining Parameter Selection For A Stochastic Flow System, Wenyaw Chan, Anlong Li, Henry C. Co
Machining Parameter Selection For A Stochastic Flow System, Wenyaw Chan, Anlong Li, Henry C. Co
Research Reports from the Department of Operations
This paper examines the foundation for economic analysis in unreliable metal cutting processes. Using queuing models, we present some observations on the effect of cutting speed upon tool life, rate of acceptance of work, and mean flow time in machining parameter optimization. [Published circa 1987-1989.]
An Update On Barter: Some Contributions Of Management Science, Arnold Reisman, Duu-Cheng Fuh, Gang Li
An Update On Barter: Some Contributions Of Management Science, Arnold Reisman, Duu-Cheng Fuh, Gang Li
Research Reports from the Department of Operations
Bartering, humanity's oldest form of commerce, has been practiced since prehistoric times, with evidence dating back to 8300 B.C. This trade system has endured through various civilizations and economic stages, including the post-industrial era. Today, bartering remains prevalent, comprising 30% of global trade, with modern examples like professional sports player trades. Despite its widespread practice, bartering—referred to as "countertrade" in modern terminology—has received minimal attention in Western business education and research. However, this is poised to change, as the U.S. Department of Commerce predicts that countertrade will account for 50% of global trade by the year 2000. This resurgence highlights …
Predicting Doctorate Production In The Usa: Some Lessons For Long-Range Forecasters, Bruce Pollack-Johnson, Burton V. Dean, Arnold Reisman, Alfred R. Michenzi
Predicting Doctorate Production In The Usa: Some Lessons For Long-Range Forecasters, Bruce Pollack-Johnson, Burton V. Dean, Arnold Reisman, Alfred R. Michenzi
Research Reports from the Department of Operations
The nine major independently conducted forecasts of doctoral degree production for the 1970's shared a consistently high bias, although one was quite accurate. In this paper we compare the forecasting models based upon these results and discuss the implications for long-range forecasting. We show that the bias was mainly due to a common core assumption (exemplifying "assumption drag") that students would pursue degrees at clo-se to the existing rates in spite of decreasing traditional demand for graduates. The results also indicate the value of simple models and eclectic forecasting methods, the desirability of robust causal models and dangers of extrapolative …
Two Algorithms For Inventory Decisions Under Inflationary Conditions, N.G. Duraiswamy, Arnold Reisman
Two Algorithms For Inventory Decisions Under Inflationary Conditions, N.G. Duraiswamy, Arnold Reisman
Research Reports from the Department of Operations
This paper reports two algorithms for inventory decisions under inflationary conditions. The first, a heuristic algorithm, was designed to provide efficient purchasing decisions when the demand is deterministic and constant overtime and no inventory shortage is allowed at anytime. It is assumed that price increases due to inflation occurs in a discrete fashion; that is, prices go up not continually but at discrete time points. The second, a dynamic programming algorithm was derived under the same price increase assumption, but applies to the deterministic, dynamic demand and no shortage problem. [Published circa 1979-1980.]
A Retrospective Look At A Number Of Forecasts Of 1971-80 Ph.D. Degree Production In The U.S.A., Alfred R. Michenzi, Arnold Reisman, Burton V. Dean, Bruce Pollack-Johnson, Edward Rattner
A Retrospective Look At A Number Of Forecasts Of 1971-80 Ph.D. Degree Production In The U.S.A., Alfred R. Michenzi, Arnold Reisman, Burton V. Dean, Bruce Pollack-Johnson, Edward Rattner
Research Reports from the Department of Operations
At the beginning of the '70s, a number of studies were commissioned to project the production of Ph.D.'s during that decade. This paper summarizes the underlying assumptions, data, and methodologies used by each of the studies and compares the resulting forecasts to the actual outcomes. Lastly, a retrospective analysis of the above offers some insights for future long range manpower forecasters. [Likely published circa 1984-1985.]
A Throughput-Maximizing Facility Planning And Layout Model, Henry C. Co, Albert Wu, Arnold Reisman
A Throughput-Maximizing Facility Planning And Layout Model, Henry C. Co, Albert Wu, Arnold Reisman
Research Reports from the Department of Operations
This paper presents a throughput-maximizing algorithm for facility planning and layout of flexible manufacturing systems. It uses a computationally efficient mean-value analysis model to analyze system configurations, and extends the methodology of CRAFT in layout planning. [Published circa 1986-1989.]
A Mean Value Analysis Model For Analyzing Manufacturing Systems: With Emphasis On Layout And Material Flow, Albert Wu, Henry C. Co, Arnold Reisman
A Mean Value Analysis Model For Analyzing Manufacturing Systems: With Emphasis On Layout And Material Flow, Albert Wu, Henry C. Co, Arnold Reisman
Research Reports from the Department of Operations
Queuing-network models yield closed-form analytical solutions and can provide decision makers valuable insights about the systems modeled. This paper presents FMS-Q, a mean-value analysis model of job-shop like systems such as flexible manufacturing systems. FMS-Q models the layout and the output queues at each node of the FMS explicitly. Lastly, a simulation study using Caterpillar data is presented to compare the relative performance of several queueing models of FMS. Specifically FMS-Q performance is compared to that of CAN-Q and MVA-Q using the same inputs. [Published circa 1986-1989.]
A Multinomial Lattice Option Pricing Methodology For Valuing Risky Ventures: Multiple Sources Of Uncertainty, Bardia Kamrad
A Multinomial Lattice Option Pricing Methodology For Valuing Risky Ventures: Multiple Sources Of Uncertainty, Bardia Kamrad
Research Reports from the Department of Operations
The methodology for determining the value of a claim whose payoffs depend upon the stochastic prices of other assets is referred to as Contingent Claims Analysis (CCA). This methodology has now become an industry standard for valuation of financial assets such as options, warrants, bonds, convertibles, and a host of other financial derivative securities. In recent years, techniques of Contingent Claims Analysis (CCA) and stochastic control theory have also been used to value risky ventures characterized by significant operating flexibility. While the advantages of these methods over alternative valuation approaches have been well documented, implementation problems have emerged, primarily due …
On Stages Of Knowledge Growth In The Management Sciences, Arnold Reisman, Xiaomei Xu
On Stages Of Knowledge Growth In The Management Sciences, Arnold Reisman, Xiaomei Xu
Research Reports from the Department of Operations
This paper invokes Rostow's theory of economic development, the kinetics of chemical reactions and the principles of technology forecasting to address, by analogy, the stages of knowledge development in Management Science. It shows that different strategies dominate research at the various stages of its development. Lastly it relates the stages to the level of knowledge accumulated and the relative difficulty of teaching/learning the accumulated knowledge.
Toward An Epistemology Of Or/Ms, Arnold Reisman
Toward An Epistemology Of Or/Ms, Arnold Reisman
Research Reports from the Department of Operations
This paper reviews some concepts from History and Philosophy of Science and applies them to examining the stages of development reached by some theoretical OR/MS subdisciplines and by several applications areas.An attempt is made to create an epistemologic context for recent discussions regarding the state-of-the-art and implications for the future of OR/MS.
Toward Meta Research In Technology Transfer, Liming Zhao, Arnold Reisman
Toward Meta Research In Technology Transfer, Liming Zhao, Arnold Reisman
Research Reports from the Department of Operations
Technology Transfer (TT) literature has grown exponentially during the last twenty-five years. As in most emerging fields, the literature is quite disjointed. It is especially so in TT because of the cross-disciplinary nature of the field. Although a number of taxonomies have been proposed, most are by and for a specific discipline, e.g., economics or sociology. This paper offers a taxonomic schema which takes into account each of the streams of TT knowledge and classifies the developments efficiently and effectively.
Beginning A Voyage : The Lincoln Electric Company (Cleveland, Ohio) Automation Forum Plant Study, A. Dale Flowers, Henry C. Co
Beginning A Voyage : The Lincoln Electric Company (Cleveland, Ohio) Automation Forum Plant Study, A. Dale Flowers, Henry C. Co
Research Reports from the Department of Operations
This paper details the Lincoln Electric Company’s strategic initiative to enter the ODP (open drip proof) motor market with their new Signature Series during the 1990s. Faced with stagnant sales of their TEFC (totally enclosed fan cooled) motors, Lincoln invested over $10 million in advanced automation and vertical integration to produce high-quality ODP motors. The project emphasized in-house manufacturing, rigorous quality control, and innovative product design, resulting in a unique five-year warranty. Despite challenges such as cost overruns and delays, Lincoln views the project as a learning opportunity, demonstrating their commitment to integrating human resources with state-of-the-art technology for long-term …
The Cim Journey : The Allen-Bradley Pilot Cim Cell In Twinsburg, Ohio, Henry C. Co, A. Dale Flowers
The Cim Journey : The Allen-Bradley Pilot Cim Cell In Twinsburg, Ohio, Henry C. Co, A. Dale Flowers
Research Reports from the Department of Operations
The Allen-Bradley (A-B) Twinsburg plant assembles printed circuit boards (PCB's) for four geographically remote engineering departments. Each engineering department uses different CAD (Computer-Aided Design) and CAE (Computer-Aided Engineering) systems to meet application-specific design requirements. The journey to CIM began at the same time as A-B's decision to implement surface-mount technology (SMT) to increase product function while maintaining product size. CIM allowed Allen-Bradley to leverage its investment in SMT by integrating the assembly cell with the design databases of the four operating divisions.
Technology Transfer: A Taxonomic View, Arnold Reisman
Technology Transfer: A Taxonomic View, Arnold Reisman
Research Reports from the Department of Operations
Interest in the notion of Technology Transfer has been gaining momentum during the last two decades. Technology Transfer, however, has different meanings to different people. It may indeed mean different things to any one individual. This paper is an attempt to define the field in its entirety and to delineate all its facets in a manner that is parsimonious yet discriminating. In other words, it is an attempt to create a classification or taxonomy of Technology Transfer.