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Articles 1 - 30 of 34
Full-Text Articles in Engineering
Acuta Enews December 1994, Vol. 23, No. 12
Acuta Enews December 1994, Vol. 23, No. 12
ACUTA Newsletters
In This Issue
Board report
President's message
George Mason University becomes "virtual campus"
Phone fraud at Salve Regina
Campus-wide network at James Madison
From ACUTA Headquarters
Acuta Enews November 1994, Vol. 23, No. 11
Acuta Enews November 1994, Vol. 23, No. 11
ACUTA Newsletters
In This Issue
Board report
President's message
Institutional Excellence Award winners
NANP
Telecome helps Financial Aid at Mizzou
Managing 30 years into the future
Acuta Enews October 1994, Vol. 23, No. 10
Acuta Enews October 1994, Vol. 23, No. 10
ACUTA Newsletters
In This Issue
Special Emphasis Toll Fraud
Board Report
President's Message
ACUTA President
On the Campus of...
DC at a glance
Analysis Of Efficiency Measures For Block Diagonal Machine-Component Charts, Hamid Seifoddini, Manocher Djassemi
Analysis Of Efficiency Measures For Block Diagonal Machine-Component Charts, Hamid Seifoddini, Manocher Djassemi
Industrial Technology and Packaging
Group efficiency measures have been developed to evaluate machine-component charts for the formation of cellular manufacturing systems. In this paper the existing grouping efficiency measures will be evaluated by determining the relationship between the values of a grouping efficiency measure and the performance of the corresponding cellular manufacturing system.
Acuta Enews September 1994, Vol. 23, No. 9
Acuta Enews September 1994, Vol. 23, No. 9
ACUTA Newsletters
In This Issue
Board report
President's message
Just Say Yes
Developing Excellence
Conference photos
The Confident Decision Maker
Positive about Change
Information Highway
Relationship Between Technical Knowledge And Price-Perceived Quality In An Industrial Setting, Jeannie Helen Caicedo
Relationship Between Technical Knowledge And Price-Perceived Quality In An Industrial Setting, Jeannie Helen Caicedo
FIU Electronic Theses and Dissertations
As proven by many studies, non-industrial consumers perceive price as a strong quality indicator. However, the applicability of this behavior to an industrial setting has been long questioned. It is hypothesized in this research that the levels of price-perceived quality will decrease in an industrial setting as the technical knowledge of the buyer increases. Judgement Sampling method was used to select the most appropriate sample for this study. Since engineers are particularly important influencers in the purchase decision process in organization, engineering students and professors were chosen as the study population. A survey was administered to a sample population that …
Acuta Enews August 1994, Vol. 23, No. 8
Acuta Enews August 1994, Vol. 23, No. 8
ACUTA Newsletters
In This Issue
Board Report
President's message
CUPA Administrative Compensation Survey
WSU partnership
Phone registration at SMSU
Optimum Symbol-By-Symbol Detection Of Uncoded Digital Data Over The Gaussian Channel With Unknown Carrier Phase, Pooi Yuen Kam, Seng Siew Ng, Tock Soon Ng
Optimum Symbol-By-Symbol Detection Of Uncoded Digital Data Over The Gaussian Channel With Unknown Carrier Phase, Pooi Yuen Kam, Seng Siew Ng, Tock Soon Ng
Research Collection School Of Computing and Information Systems
A theory of optimum receiver design for symbol-by-symbol detection of an uncoded digital data sequence received over the Gaussian channel with unknown carrier phase is presented. Linear suppressed-carrier modulation is assumed. The work here aims at laying a conceptual foundation for optimum symbol-by-symbol detection, and rectifies existing approaches to the problem. The optimum receiver structure is obtained explicitly for an arbitrary carrier phase model, but its computational requirements are too heavy in general for any practical implementation. In one important special case, namely, the case in which the carrier phase can be treated as a constant over some K+1 symbol …
Acuta Enews July 1994, Vol. 23, No. 7
Acuta Enews July 1994, Vol. 23, No. 7
ACUTA Newsletters
In This Issue
Board Report
President's message
White papers/Blue papers
Yale Telecom
The year the lights went on in Georgia
Curtin University
A Functional Architecture For Automated Highway Traffic Planning, H.-S. Jacob Tsao
A Functional Architecture For Automated Highway Traffic Planning, H.-S. Jacob Tsao
Faculty Publications
In a fully automated Automated Highway System (AHS), the roadside control system and the vehicles themselves are responsible for moving the large number of vehicles safely and efficiently. Therefore, the task of operating an AHS is drastically different from and much more complex than its conventional counterpart. Resulting from a large number of design options, there exist many possible ways to operate an AHS. Each of these possible operating scenarios will support a different set of functions. A crucial task in AHS R&D is to evaluate and compare these potentially large number of different AHS operating scenarios with respect to …
Defense Industrial Base Policy: Revisited, Michael E. Heberling
Defense Industrial Base Policy: Revisited, Michael E. Heberling
Faculty Publications
In an era of decreasing defense budgets and enemy threats, problems associated with maintaining a healthy defense industrial base have become pronounced. This article discussed defense industrial policy goals and argues that these goals may be collectively unobtainable.
Automated Manpower Rostering: Techniques And Experience, C. M. Khoong, Hoong Chuin Lau, L. W. Chew
Automated Manpower Rostering: Techniques And Experience, C. M. Khoong, Hoong Chuin Lau, L. W. Chew
Research Collection School Of Computing and Information Systems
We present ROMAN, a comprehensive, generic manpower rostering toolkit that successfully handles a wide spectrum of work policies found in service organizations. We review the use of various techniques and methodologies in the toolkit that contribute to its robustness and efficiency, and relate experience gained in addressing manpower rostering problems in industry.
A Preliminary Model For Lot Sizing In Semiconductor Manufacturing, Tali F. Carmon, Steven Nahmias
A Preliminary Model For Lot Sizing In Semiconductor Manufacturing, Tali F. Carmon, Steven Nahmias
Industrial and Manufacturing Engineering
No abstract provided.
Acuta Enews June 1994, Vol. 23, No. 6
Acuta Enews June 1994, Vol. 23, No. 6
ACUTA Newsletters
In This Issue
Board report
President's message
White papers/blue papers
TFS takes aim at toll fraud
ITFS Monograph review
Lost on the Information Highway?
Work Measurement Decision Diagram Development And Application At Nasa's Kennedy Space Center, Susan L. Murray, Amanda M. Mitskevich, Joseph J. Pignatiello Jr., Timothy S. Barth, William W. Swart
Work Measurement Decision Diagram Development And Application At Nasa's Kennedy Space Center, Susan L. Murray, Amanda M. Mitskevich, Joseph J. Pignatiello Jr., Timothy S. Barth, William W. Swart
Engineering Management and Systems Engineering Faculty Research & Creative Works
This paper presents a decision flow diagram developed at NASA's Kennedy Space Center for the selection of the appropriate work measurement methodologies for Space Shuttle processing.
Acuta Enews May 1994, Vol. 23, No. 5
Acuta Enews May 1994, Vol. 23, No. 5
ACUTA Newsletters
In This Issue
Board Report
President's message
VTEL goes to Russia
Video at Univ. of Missouri
DC at a glance
Takin' care of business
Acuta Enews April 1994, Vol. 23, No. 4
Acuta Enews April 1994, Vol. 23, No. 4
ACUTA Newsletters
In This Issue
Board report
President's message
ISDN at WVU
Book reviews
Hold down toll fraud
Takin' care of business
Acuta Enews March 1994, Vol. 23, No. 3
Acuta Enews March 1994, Vol. 23, No. 3
ACUTA Newsletters
In This Issue
Board reprt
President's message
Baltimore update
Improvements at the University of Chicago
21st Century technology
Resource Library is growing
Acuta Enews February 1994, Vol. 23, No. 2
Acuta Enews February 1994, Vol. 23, No. 2
ACUTA Newsletters
In This Issue
Board report
Presidents message
What's right...what's wrong? States to develop telecommunications modernization plans
21st century technology
Capacity Of Automated Highway Systems: Effect Of Platooning And Barriers, H.-S. Jacob Tsao, Randolph Hall, Bruce Hongola
Capacity Of Automated Highway Systems: Effect Of Platooning And Barriers, H.-S. Jacob Tsao, Randolph Hall, Bruce Hongola
Faculty Publications
The concept of Automated Highway Systems (AHS) is based on the belief that an appropriate integration of control and communication technologies placed on the vehicle and on the highway can lead to a large improvement in capacity and safety without requiring a significant amount of additional highway right-of-way. Stemming from this belief are various conceptual scenarios for vehicle/highway automation.An AHS consists of two major components: vehicle/highway automation technology and highway operating strategy. In this paper, we study the capacity of key AHS operating scenarios.
A Finite Capacity Queue With Markovian Arrivals And Two Servers With Group Services, Srinivas Chakravarthy, Attahiru S. Alfa
A Finite Capacity Queue With Markovian Arrivals And Two Servers With Group Services, Srinivas Chakravarthy, Attahiru S. Alfa
Industrial & Manufacturing Engineering Publications
In this paper we consider a finite capacity queuing system in which arrivals are governed by a Markovian arrival process. The system is attended by two exponential servers, who offer services in groups of varying sizes. The service rates may depend on the number of customers in service. Using Markov theory, we study this finite capacity queuing model in detail by obtaining numerically stable expressions for (a) the steady-state queue length densities at arrivals and at arbitrary time points; (b) the Laplace-Stieltjes transform of the stationary waiting time distribution of an admitted customer at points of arrivals. The stationary waiting …
Error Recovery In Intelligent Robotic Workcells, R. D. Borchelt, Sema E. Alptekin
Error Recovery In Intelligent Robotic Workcells, R. D. Borchelt, Sema E. Alptekin
Industrial and Manufacturing Engineering
This paper focuses on the requirements for achieving automated diagnosis and error recovery in a robotic assembly cell. Untended robust operation is the goal which is discussed, and the use of a knowledge-base oriented diagnostic/control system to support on-line error recovery is advocated. It is proposed that error recovery attempts should be made, not only based on information gathered by system sensors, but also by using additional cell-specific knowledge pertaining to recovery strategies. Recovery attempts are to be made even in the absence of complete diagnosis, in order to gather additional information. A control structure developed to implement this approach …
The Importance Of Considering Size Effect Along The Cutting Edge In Predicting The Effective Lead Angle For Turning, William J. Endres, Daniel Waldorf
The Importance Of Considering Size Effect Along The Cutting Edge In Predicting The Effective Lead Angle For Turning, William J. Endres, Daniel Waldorf
Industrial and Manufacturing Engineering
The concept of an effective orthogonal cutting edge in turning is considered. The orientation of this edge in the radial-longitudinal plane, as commonly modeled through an effective lead angle, is studied. The methods of effective lead angle prediction used in numerous previously developed force models are plagued with large errors over ranges of process inputs, in particular feed rate and depth of cut. Four previously developed methods of effective lead angle prediction are reviewed and compared to a new method presented here. This new method accounts for the size effect as introduced through the variation in chip thickness along the …
The Science Of Simulation Modeling, Paul Savory, Gerald Mackulak
The Science Of Simulation Modeling, Paul Savory, Gerald Mackulak
Department of Industrial and Management Systems Engineering: Faculty Publications
Many people refer to simulation model building as an “intuitive art”. This implies that modeling can only be done by a select group of highly trained creative people and thus isolates many from considering simulation as a usable tool. Model building is a science that is learned through education, training and experience. In this paper, we discuss the role of science in performing a simulation study. We illustrate the teaching of the science of simulation by discussing the simulation curriculum at Arizona State University.
Extending Simulation’S Advantages To Novice Model Builders: Intellisim Tutorial, Paul Savory, Gerald Mackulak, Jeff Cochran
Extending Simulation’S Advantages To Novice Model Builders: Intellisim Tutorial, Paul Savory, Gerald Mackulak, Jeff Cochran
Department of Industrial and Management Systems Engineering: Faculty Publications
The potential benefits that discrete-event simulation offers are impeded by the high level of expertise necessary to successfully conduct a sound simulation study. As a solution, this paper introduces IntelliSIM, an intelligent simulation environment. Using this environment makes simulation more accessible to users by reducing the need for extensive experience or training. One of IntelliSIM’s key features for accomplishing this is a tutorial and training module that quickly acquaints a novice simulation user with IntelliSIM’s features and the process of performing a simulation study. This paper discusses this tutorial by explaining how IntelliSIM develops a simulation model, thus illustrating how …
Ascertaining Important Features For Industrial Simulation Environments, Gerald Mackulak, Jeffery Cichran, Paul Savory
Ascertaining Important Features For Industrial Simulation Environments, Gerald Mackulak, Jeffery Cichran, Paul Savory
Department of Industrial and Management Systems Engineering: Faculty Publications
Recent years have witnessed the development and commercial release of multiple simulation tools, environments, and intelligent simulators. Each release seems to contain additional advanced features designed to simplify simulation use and increase the productivity of model builders. But to date, no one has addressed feature definition from the viewpoint of a simulation practitioner. This paper discusses our efforts to identify and prioritize simulation features deemed most desirable from the practitioner viewpoint. A series of three questionnaires were developed and administered to a group of qualified simulation practitioners. With results that are of interest to simulation users, researchers, and simulation software …
A Simplified Method For The Bilinear S-Z Transformation, Dan M. Scott
A Simplified Method For The Bilinear S-Z Transformation, Dan M. Scott
Department of Industrial and Management Systems Engineering: Faculty Publications
A new technique for performing the bilinear transformation of polynomials is presented. The technique is both simple to understand as well as efficient in its computer implementation. The key to the method is the way in which the successive derivatives of a particular polynomial are computed. A simple recursion formula is used which can be done either by hand, if desired, or by computer. The order of complexity of the algorithm is found to be O(n2), while storage requirements are O(n), where n is the degree of the polynomial. The new method will handle completely general …
Acuta Enews January 1994, Vol. 23, No. 1
Acuta Enews January 1994, Vol. 23, No. 1
ACUTA Newsletters
In This Issue
Board Report
Presidents message
FCC proposes regulations for toll fraud
Cruising he information superhighway
21st century technology
Acuta Enews January 1993, Vol. 23, No. 1
Acuta Enews January 1993, Vol. 23, No. 1
ACUTA Newsletters
In This Issue
Regulatory update
President's column
Grants to network innovators
Monograph honoraria $500
Phone fiber to carry CATV
Director's column
A Probabilistic Model For Avcs Longitudinal Collision/Safety Analysis, Jacob Tsao, Randolph Hall
A Probabilistic Model For Avcs Longitudinal Collision/Safety Analysis, Jacob Tsao, Randolph Hall
Faculty Publications
This paper develops a probabilistic model for analyzing longitudinal collision/safety between an abruptly decelerating vehicle and its immediate follower. The input parameters are the length of the gap between the two vehicles, their common speed prior to the failure, the reaction delay of the following vehicle and a bivariate distribution for the two deceleration rates. The output includes the probability of a collision and the probability distribution of the relative speed at collision time We use this model to compare the safety consequences associated with the platooning and “free-agent” longitudinal-separation rules. We also demonstrate that the free-agent rule implemented with …