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Engineering Commons

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Lehigh University

1969

Operations Research, Systems Engineering and Industrial Engineering

Articles 1 - 15 of 15

Full-Text Articles in Engineering

A Systematic Approach To The Design Of Effective Chip Breakers, Joseph Frank Peritore Jan 1969

A Systematic Approach To The Design Of Effective Chip Breakers, Joseph Frank Peritore

Theses and Dissertations

An investigation into chip breaker designs which will result in the proper chip control is presented in this thesis. The investigation of the premise that chip breakers placed roughly normal to the direction of chip flow would have the greatest likelihood of breaking the chip, was simplified by the use of chip flow angle equations. After the accuracy of these equations was verified, it was possible to construct the chip breaker face at a ninety degree angle to the chip flow direction.


A Computational Procedure For Solving Multiple Choice Integer Programming Problems With Zero-One Variables, Joe C. Alexander Jan 1969

A Computational Procedure For Solving Multiple Choice Integer Programming Problems With Zero-One Variables, Joe C. Alexander

Theses and Dissertations

The multiple choice integer programming problem is one for which practical applications frequently arise. A computational procedure which optimally solves problems of this structure is developed by the author. The proposed procedure takes advantage of the particular characteristics of different types of problems within the multiple choice class. The method is primarily a branch and bound procedure which implicitly enumerates all of the possible combinations.


Traffic Congestion In Shop Collection Systems, George D. Boardman Jan 1969

Traffic Congestion In Shop Collection Systems, George D. Boardman

Theses and Dissertations

A computer simulation model is developed which will aid in predicting the data traffic congestion for shop data collection systems. Two data traffic input distributions, Poisson and Bernoulli, gamma distributed service times; and random or order of arrival queue discipline.


A Method Of Estimating The Value Of A Computer Based On-Line Operations Control System In A Production Shop, James V. Goodbarn Jan 1969

A Method Of Estimating The Value Of A Computer Based On-Line Operations Control System In A Production Shop, James V. Goodbarn

Theses and Dissertations

A simulation program is presented that develops a risk profile of the intended investment. The risk profile is essentially a return on investment probability analysis developed from the estimated distributions of costs, service life and savings of the intended investment in a computer based, on-line system. The author concludes that investments in computer based on-line operations control systems in production shops can be evaluated through use of the risk analysis or return-probability techniques given, but that conventional cash flow analysis techniques may result in overstating the probable return on investment.


Human Factors Evaluation Of Techniques For The Manual Entry Of Data Into Source Data Collection Systems, Otis P. Lutz Jan 1969

Human Factors Evaluation Of Techniques For The Manual Entry Of Data Into Source Data Collection Systems, Otis P. Lutz

Theses and Dissertations

This study evaluated six input configurations which can be used for the manual entry of numeric data into source data collection systems. The input configurations evaluated were: Touch-Tone keyboard with and without voice answerback, teletype keyboard, slidebars, rotary knobs, and thumbwheels. Two groups with 8 subjects in each entered numeric messages into the input configurations.


A Computational Procedure For Obtaining The Minimum Makespan Solution To The Machine Scheduling Problem With Job And Machine Start Constraints And Job Passing Permitted, Peter Long Jan 1969

A Computational Procedure For Obtaining The Minimum Makespan Solution To The Machine Scheduling Problem With Job And Machine Start Constraints And Job Passing Permitted, Peter Long

Theses and Dissertations

The problem of balancing an assembly line has been facilitated by a number of analytic methods for which computer programs are available. The feasibility of using the variable element time balancing algorithm was investigated in reference to the task of setting up an assembly line type operation for the reconditioning of units which are disassembled, repaired, and returned to inventory and subsequent use.


As Study In The Design Of An Assembly Line For Reconditioning Items, Thomas B. Long Jr. Jan 1969

As Study In The Design Of An Assembly Line For Reconditioning Items, Thomas B. Long Jr.

Theses and Dissertations

The problem of balancing an assembly line has been facilitated by a number of analytic methods for which computer programs are available. The majority of such techniques accept only deterministic values as the element times of the operations.


Models For Bivariate Process Control On Central Tendency, Anthony J. Pellecchia Jan 1969

Models For Bivariate Process Control On Central Tendency, Anthony J. Pellecchia

Theses and Dissertations

As an introduction to a 2-part problem, the models for bivariatge control of central tendency, including the Shewhart, the Hotelling T2, and the elliptical control charts are reviewed. Included are background material on the bivariate normal distribution, the Multivariate Central Limit Theorem, and a demonstration of the equivalence of the Hotelling T2 control chart to the elliptical control region.


Evaluation Of The Risk When Monthly Auditing Standards Are Imposed By Sampling With Weighed Attributes, David A. Rockwell Jan 1969

Evaluation Of The Risk When Monthly Auditing Standards Are Imposed By Sampling With Weighed Attributes, David A. Rockwell

Theses and Dissertations

A method is developed to assist the producer in controlling the product quality where monthly auditing standards are imposed after final inspection. The control involves monitoring the numer of demerits accumulated by the auditing department and finding the risk that the product will be rated out of control at the end of the month. Thus the method is intended to be employed in addition to present control techniques.


An Investigation Of Branch-And Bound Techniques For Solving The Facilties-Location Assignment Problem, Lloyd C. Turner Jan 1969

An Investigation Of Branch-And Bound Techniques For Solving The Facilties-Location Assignment Problem, Lloyd C. Turner

Theses and Dissertations

Optimal producing procedures for the facilities-location assignment problem have been impractical because of the long computer solution times required for even the relatively small problems. Two new algorithms are presented in this paper and their improved capabilities are demonstrated. The responses of these algorithms to several input parameters are also investigated.


An Optimal Sequence Sensitivity Analysis For The Flow Shop Scheduling Model, Milan M. Sowis Jan 1969

An Optimal Sequence Sensitivity Analysis For The Flow Shop Scheduling Model, Milan M. Sowis

Theses and Dissertations

The problem of constructing an optimal schedule or sequence, given that there are n jobs and m machines, has been intensively studied by many investigators. This paper presents an analysis of the effects on the optimum sequence of changing the time of a single operation after an optimal schedule has been determined but before the schedule has actually commenced.


An Industrial Dynamics Study Of A Distributing House Operation For Reparable Items, Joseph J. Westlake Jan 1969

An Industrial Dynamics Study Of A Distributing House Operation For Reparable Items, Joseph J. Westlake

Theses and Dissertations

Industrial Dynamics is a method for studying industrial, social, or economic systems with which it is hoped to discover the underlying nature of these systems in order to develop a theory of management in the sense of the basic theories and laws of physics. This paper presents an Industrial Dynamics study of an actual Distributing House operation at the micro-economic level of analysis.


Applications Of Gert To Quality Control, Eddie Chien-Hua Hsuan Jan 1969

Applications Of Gert To Quality Control, Eddie Chien-Hua Hsuan

Theses and Dissertations

In this thesis, the characteristics of various sampling plans and control charts are modeled by GERT. Most of the sampling models provide information about the probabilities of accepting and rejecting a lot, the expected number and variance of units passed until the lot is accepted as well as rejected. The control chart models are used to compute the expected number of points under control until an out of control condition occurs.


Investigation Of Safety Stock In A Dynamic, Multi-Echelon Inventory System, James H. Palmer Jan 1969

Investigation Of Safety Stock In A Dynamic, Multi-Echelon Inventory System, James H. Palmer

Theses and Dissertations

This study was conducted for the purpose of evaluating various safety stock policies in a dynamic, multi-echelon inventory system. The study environment is set in a four level multi-echelon production system. Demands on the system are forecast over a twenty period planning horizon and are treated in the model as deterministic. Safety stock is required to protect against lead time variation which is assumed to be distributed in a Poisson manner. All costs are assumed known with the exception of stockout cost.


A Heuristic Method For Locating A Warehouse Utilizing A Truck Dispatching Type Model, Robert W. Leaser Jan 1969

A Heuristic Method For Locating A Warehouse Utilizing A Truck Dispatching Type Model, Robert W. Leaser

Theses and Dissertations

This thesis is addressed to the truck dispatching problem of determining the best warehouse location from which to supply a given set of demand points in a truck dispatching manner.