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Operations Research, Systems Engineering and Industrial Engineering Commons

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2000

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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

A Simulation-Based Heuristic For Fleet Assignment, Sonia Rosario Anorga Dec 2000

A Simulation-Based Heuristic For Fleet Assignment, Sonia Rosario Anorga

FIU Electronic Theses and Dissertations

Integer programming, simulation, and rules of thumb have been integrated to develop a simulation-based heuristic for short-term assignment of fleet in the car rental industry. It generates a plan for car movements, and a set of booking limits to produce high revenue for a given planning horizon.

Three different scenarios were used to validate the heuristic. The heuristic's mean revenue was significant higher than the historical ones, in all three scenarios. Time to run the heuristic for each experiment was within the time limits of three hours set for the decision making process even though it is not fully ...


A Web-Based Interface For Storing And Executing Simulation Models, Paul Savory Dec 2000

A Web-Based Interface For Storing And Executing Simulation Models, Paul Savory

Industrial and Management Systems Engineering Faculty Publications

The dominance of the Internet in the development of information and communication technology has made Web-based distributed solutions increasingly attractive. Apart from providing other services, the World Wide Web is being looked upon as an environment for hosting modeling and simulation applications. SIMAN is a simulation language that allows users to simulate discrete and continuous systems. In this research, a web-based interface or toolkit has been developed for storing and executing SIMAN simulation models over the Internet. This toolkit consists of a World Wide Web interface to SIMAN and a web-accessible database for storing user models. It provides users an ...


The Role Of Intelligent Transportation Systems (Its) In Intermodal Air Cargo Operations, H.-S. Jacob Tsao, Asim Rizwan Dec 2000

The Role Of Intelligent Transportation Systems (Its) In Intermodal Air Cargo Operations, H.-S. Jacob Tsao, Asim Rizwan

Faculty Publications

If California were a nation, it would be the sixth largest economy in the world. Efficient goods movement is crucial to California’s economy. Air freight consists predominantly of high-value, time-sensitive or time-definite goods, e.g., electronic equipment, emergency shipments, overnight packages, etc. Timely delivery of air freight has been an important element of many manufacturing and service operations in California. Therefore, the air cargo industry is a vital part of the state’s economy. The objectives of this research include (a) investigating and suggesting how the public sector in California can assist the air cargo industry in providing efficient ...


Acuta Enews December 2000, Vol. 29, No. 12 Dec 2000

Acuta Enews December 2000, Vol. 29, No. 12

ACUTA Newsletters

In This Issue

UConn Wins in Court

ACUTA EVENTS

Spotlight on Volunteers

DC Update

Board Report

Higher Education and Truth-in-Billing

Web Site Recognition

Welcome New Members

Positions Available


A Web-Based Interface For Storing And Executing Simulation Model, Ashu Guru, Paul Savory, Robert Williams Dec 2000

A Web-Based Interface For Storing And Executing Simulation Model, Ashu Guru, Paul Savory, Robert Williams

Industrial and Management Systems Engineering Faculty Publications

The dominance of the Internet in the development ofinformation and communication technology has madeWeb-based distributed solutions increasingly attractive.Apart from providing other services, the World Wide Webis being looked upon as an environment for hostingmodeling and simulation applications. SIMAN is asimulation language that allows users to simulate discreteand continuous systems. In this research, a web-basedinterface or toolkit has been developed for storing andexecuting SIMAN simulation models over the Internet.This toolkit consists of a World Wide Web interface toSIMAN and a web-accessible database for storing usermodels. It provides users an easy-to-use environment fordeveloping text-based simulation models using the SIMANsimulation language ...


Predicting Employee Compliance With Safety Regulations, Factoring Risk Perception, Yenny Farinas Diaz Nov 2000

Predicting Employee Compliance With Safety Regulations, Factoring Risk Perception, Yenny Farinas Diaz

FIU Electronic Theses and Dissertations

The purpose of this research was to develop a methodology that would evaluate employees’ personality traits, demographic characteristics, and workplace parameters to predict safety compliance along with the moderating effect of risk perception.

One hundred and twenty five employees of a manufacturing facility were given questionnaires to gather their demographic and perception information. Surveys were also used to measure their personality characteristics, and periodic observations were recorded to document employee’s safety compliance. A significant correlation was found between compliance and the worker's perception of management's commitment to safety (r = 0.27, p < 0.01), as well as with gender (r = -0.19, p < 0.05). Females showed a significantly higher average compliance (78%), than males (69%). These findings demonstrated the value of developing a model to predict safety behavior that would assist companies In maintaining a safe work environment, preventing accidents, ensuring compliance, and reducing associated costs.


Proposed Design Modifications To Reduce Risk Of Operating Rotary Field Mowers, Katie L. White, Larry G. Wells, Scott A. Shearer, Larry R. Piercy Nov 2000

Proposed Design Modifications To Reduce Risk Of Operating Rotary Field Mowers, Katie L. White, Larry G. Wells, Scott A. Shearer, Larry R. Piercy

Biosystems and Agricultural Engineering Faculty Publications

The primary objective of this project was to reduce risk of injury associated with operating a rotary mower driven by a tractor power take-off (PTO) by developing and evaluating design improvements and determining their economic feasibility. Researchers have concluded that alteration of machinery design has a greater impact on the reduction of accidents than safety training. Implementation of an Operator Presence Sensing System (OPSS) and removal of the PTO are the two injury-reducing, engineering modifications evaluated by this research. Hydraulic power allows this to occur by providing dynamic braking, few moving parts (removal of the PTO), and controllable power. A ...


Acuta Enews November 2000, Vol.29, No. 11 Nov 2000

Acuta Enews November 2000, Vol.29, No. 11

ACUTA Newsletters

In This Issue

"Not My Job"

ACUTA EVENTS

Spotlight on Volunteers

DC Update

Web Site Recognition Program Is Revised

Board Report

Welcome New Members

Position Available


Plastic Solder Paste Stencil For Surface Mount Technology, Christopher K. Wong, Daniel Waldorf Oct 2000

Plastic Solder Paste Stencil For Surface Mount Technology, Christopher K. Wong, Daniel Waldorf

Industrial and Manufacturing Engineering

Solder paste masks or stencils are an integral part of the manufacturing process for surface mount PCBs. This study examines the feasibility of a process for rapid creation of a solder paste stencil using thermoplastic material. CNC laser cutting of the stencil geometry is replacing traditional use of chemical etching on metal sheets to produce stencils. Laser cutting has been used to improve process speed, accuracy, and cost. This research attempts to continue to simplify and reduce costs in the stencil making process by proposing as the stencil material a common thermoplastic that can be cut easily and quickly using ...


Acuta Enews October 2000, Vol.29, No. 10 Oct 2000

Acuta Enews October 2000, Vol.29, No. 10

ACUTA Newsletters

In This Issue

Assessing Your Leadership Skills

ACUTA Events Spotlight on Volunteers: Texas State Coordinator

DC Update

Board Report

Welcome New Members

Positions Available


Comparison Of Light Rail Transit With Bus Semirapid Transit, Vukan R. Vuchic Oct 2000

Comparison Of Light Rail Transit With Bus Semirapid Transit, Vukan R. Vuchic

Departmental Papers (ESE)

Selection of transit modes is one of the most important decisions in the transit planning process. A particularly important decision is the selection between bus and rail modes, because it influences the type of service that will be offered and, more importantly, the role transit will play in the city. Ultimately, such a decision has an impact on the quality of life in the city. It is therefore necessary to include in the selection process the physical and economic characteristics of modes, as well as the quality of service, attraction of passengers and the impacts of the transit system on ...


Acuta Enews September 2000, Vol.29, No. 9 Sep 2000

Acuta Enews September 2000, Vol.29, No. 9

ACUTA Newsletters

In This Issue

Annual Conference Highlights

ACUTA EVENTS

Northeast to Hold Local Event

DC Update

Overheard on the Listserve: Access to 900 Numbers

Board Report

Welcome New Members

Positions Available


Acuta Enews August 2000, Vol.29, No. 8 Aug 2000

Acuta Enews August 2000, Vol.29, No. 8

ACUTA Newsletters

In This Issue

FCC Officially Assigns 211, 511, 711

ACUTA EVENTS

Spotlight on Volunteers: State Coordinators

DC Update

Board Report

Having Trouble Reaching ACUTA's New Area Code?

High Tech Short Takes... and More

Welcome New Members

Positions Available


Acuta Enews July 2000, Vol.29, No. 7 Jul 2000

Acuta Enews July 2000, Vol.29, No. 7

ACUTA Newsletters

In This Issue

Meet the Board for 00-01

ACUTA EVENTS

Spotlight on Volunteers: State Coordinators

DC Update

Innovative Partnerships with CLECs

Welcome New Members

Positions Available


Product Flexibility In Selecting Manufacturing Planning And Control Strategy, Emine Persentili, Sema E. Alptekin Jun 2000

Product Flexibility In Selecting Manufacturing Planning And Control Strategy, Emine Persentili, Sema E. Alptekin

Industrial and Manufacturing Engineering

The manufacturing systems capable of producing several products simultaneously are frequently subject to changes in product types due to demand fluctuations. In such systems a product flexible manufacturing planning and control (MPC) strategy is needed to change from one product type to another with minimum deterioration to system performance levels. The objective of this research is to develop a systematic analysis and evaluation approach in order to compare the MRP-push and JIT-pull strategies quantitatively based on a product flexibility measure. A new product flexibility measure is developed based on the sensitivity to change concept and presented together with the implementation ...


Acuta Enews June 2000, Vol.29, No. 6 Jun 2000

Acuta Enews June 2000, Vol.29, No. 6

ACUTA Newsletters

Top 10 Tips for Buying Telecommunications Services

ACUTA EVENTS

Spotlight on Volunteers: State Coordinators

DC Update

Board Report

Dues Notices Mailed

Welcome New Members

Positions Available


Acuta Enews May 2000, Vol.29, No. 5 May 2000

Acuta Enews May 2000, Vol.29, No. 5

ACUTA Newsletters

In This Issue

Board Approves Slate of Nominees

ACUTA EVENTS

Spotlight on Volunteers: State Coordinators

DC Update

Colleges and Universities- Exempt from CALEA

Board Report

Free Encryption Software for Colleges and Universities

Welcome New Members

Positions Avaiable


Design, Modeling And Preliminary Control Of A Compliant Hexapod Robot, Uluc Saranli, Martin Buehler, Daniel E. Koditschek Apr 2000

Design, Modeling And Preliminary Control Of A Compliant Hexapod Robot, Uluc Saranli, Martin Buehler, Daniel E. Koditschek

Departmental Papers (ESE)

We present the design, modeling and preliminary control of RHex, an autonomous dynamically stable hexapod possessing merely six actuated degrees of freedom (at the hip attachment of each leg). Our design emphasizes mechanical simplicity as well as power and computational autonomy, critical components for legged robotics applications. A compliant hexapod model, used to build a simulation environment closely informed the design and construction of the physical machine and promises to inform, similarly, our future analysis as well. Simulations and experiments show that RHex can achieve dynamically stable walking, running and turning with very simple clock driven open-loop control strategies.


Acuta Enews April 2000, Vol.29, No. 4 Apr 2000

Acuta Enews April 2000, Vol.29, No. 4

ACUTA Newsletters

In This Issue

FCC Moves to Improve Telephone Number Usage

ACUTA EVENTS

DC Update

CAT 5- Have It Your Way!

Board Report

ACUTA Audio Conference on ITFS

New Members

Positions Available


A Brachiating Robot Controller, Jun Nakanishi, Toshio Fukuda, Daniel E. Koditschek Apr 2000

A Brachiating Robot Controller, Jun Nakanishi, Toshio Fukuda, Daniel E. Koditschek

Departmental Papers (ESE)

We report on our empirical studies of a new controller for a two-link brachiating robot. Motivated by the pendulum-like motion of an ape's brachiation, we encode this task as the output of a "target dynamical system." Numerical simulations indicate that the resulting controller solves a number of brachiation problems that we term the "ladder," "swing-up," and "rope" problems. Preliminary analysis provides some explanation for this success. The proposed controller is implemented on a physical system in our laboratory. The robot achieves behaviors including "swing locomotion" and "swing up" and is capable of continuous locomotion over several rungs of a ...


Event Driven Parts Moving In 2d Endogenuous Environments, C. Serkan Karagoz, H. Isil Bozma, Daniel E. Koditschek Apr 2000

Event Driven Parts Moving In 2d Endogenuous Environments, C. Serkan Karagoz, H. Isil Bozma, Daniel E. Koditschek

Departmental Papers (ESE)

This paper is concerned with the parts’ moving problem based on an event-driven planning and control. We are interested in developing feedback based approaches to the automatic generation of actuator commands that cause the robot to move a set of parts from an arbitrary initial disassembled configuration to a specif ed final configuration. In the Phase I of this project, a composite algorithm that reactively switches between different feedback controllers has been shown to induce a noncooperative game being played among the parts being manipulated. This paper describes experimental results with EDAR - Event-Driven Assembler Robot - developed for moving parts based ...


Acuta Enews March 2000, Vol.29, No. 3 Mar 2000

Acuta Enews March 2000, Vol.29, No. 3

ACUTA Newsletters

In This Issue

Minimizing the Threat of Lightning

ACUTA EVENTS

As Technologies Converge, Departments Merge

DC Update

Today's Telecom Job Market

Board Report

Welcome New Members

Positions Available


Light Rail Transit System: Its Forms And Roles In Urban Areas, Vukan R. Vuchic Mar 2000

Light Rail Transit System: Its Forms And Roles In Urban Areas, Vukan R. Vuchic

Departmental Papers (ESE)

No abstract provided.


Acuta Enews February 2000, Vol.29, No. 2 Feb 2000

Acuta Enews February 2000, Vol.29, No. 2

ACUTA Newsletters

In This Issue

Nominate Now for Board of Directors

ACUTA EVENTS

More Telecom Wish Lists for 2000

DC Update

High Tech Short Takes

Sites to See

Board Report

Welcome New Members

Positions Available


Application Of Wavelets And Principal Component Analysis In Image Query And Mammography, Sol Neeman Ph.D. Jan 2000

Application Of Wavelets And Principal Component Analysis In Image Query And Mammography, Sol Neeman Ph.D.

Engineering Studies Faculty Publications and Creative Works

Breast cancer is currently one of the major causes of death for women in the U.S. Mammography is currently the most effective method for detection of breast cancer and early detection has proven to be an efficient tool to reduce the number of deaths. Mammography is the most demanding of all clinical imaging applications as it requires high contrast, high signal to noise ratio and resolution with minimal x-radiation. According to studies [36], 10% to 30% of women having breast cancer and undergoing mammography, have negative mammograms, i.e. are misdiagnosed. Furthermore, only 20%-40% of the women who ...


An Efficient Cnc Programming Approach Based On Group Technology, Manocher Djassemi Jan 2000

An Efficient Cnc Programming Approach Based On Group Technology, Manocher Djassemi

Industrial Technology and Packaging

Many studies and reports support the significant impact of the application of group technology on various aspects of product design and manufacturing. The fact that group technology is the common solution to similar problems is the main source of such impact. In this paper, one of the less frequently utilized features of CNC technology known as parametric part programming is used to implement the common solution feature of group technology in processing a set of similar parts. Using three part families, the advantages of blending the concept of group technology and parametric programming for CNC machining operations are illustrated. The ...


Acuta Enews January 2000, Vol.29, No.1 Jan 2000

Acuta Enews January 2000, Vol.29, No.1

ACUTA Newsletters

In This Issue

Telecom Wish List 2000

ACUTA EVENTS

Pricing Discussions May Results in Heavy Fines

DC Update

Up On the Rooftop: Antennas Anyone?

Board Report

Welcome New Members

Positions Available


Development Of Vaccines For Prevention Of Botulism, Michael P. Byrne, Leonard A. Smith Jan 2000

Development Of Vaccines For Prevention Of Botulism, Michael P. Byrne, Leonard A. Smith

US Army Research

Botulism is a potentially lethal disease caused by one of seven homologous neurotoxic proteins usually produced by the bacterium, Clostridium botulinum. This neuromuscular disorder occurs through an exquisite series of molecular events, ultimately ending with the arrest of acetylcholine release and hence, flaccid paralysis. The development of vaccines that protect against botulism dates back to the 1940s. Currently, a pentavalent vaccine that protects against BoNT serotypes A-E and a separate monovalent vaccine that protects against BoNT serotype F are available as Investigational New Drugs. However, due to the numerous shortcomings associated with the toxoid vaccines, several groups have efforts towards ...


Response Of A Sage Grouse Breeding Population To Fire In Southeastern Idaho, John W. Connelly, Kerry P. Reese, Richard A. Fischer, Wayne L. Wakkinen Jan 2000

Response Of A Sage Grouse Breeding Population To Fire In Southeastern Idaho, John W. Connelly, Kerry P. Reese, Richard A. Fischer, Wayne L. Wakkinen

US Army Research

Prescribed burning is a common method to eliminate sagebrush (Artemisia spp.) and has been suggested as a tool to enhance the habitat of sage grouse (Centrocercus urophasianus). Effects of this practice on sage grouse have not been evaluated rigorously. We studied effects of prescribed fire on lek (traditional breeding display areas) attendance by male sage grouse occupying low-precipitation (<26 cm) sagebrush habitats in south- eastern Idaho from 1986 through 1994. During the preburn period (1986-89), average declines for male attendance were 48% and 46% for treatment and control leks, respectively. Lek counts were similar for treatment and control leks during the preburn years (G-test, 0.25>P>0.10). During the postburn period (1990-94), male attendance at treatment leks declined 90% and control leks declined 63%. Although declines were similar between treatment and control leks during the preburn period, postburn declines were greater for treatment than control leks ...


Rapid Transit System Automation And Experiences From North America Summary / Die Automatisierung Des U-Bahn-Systems Und Erfahrungen Aus Nordamerika, Vukan R. Vuchic Jan 2000

Rapid Transit System Automation And Experiences From North America Summary / Die Automatisierung Des U-Bahn-Systems Und Erfahrungen Aus Nordamerika, Vukan R. Vuchic

Departmental Papers (ESE)

No abstract provided.