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Operations Research, Systems Engineering and Industrial Engineering Commons

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2001

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Articles 61 - 75 of 75

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

Developing A Multi-Attribute Utility Model (Maum) For Selecting Information Technologies In The Construction Industry , Tarek Elsayed Elmisalami Jan 2001

Developing A Multi-Attribute Utility Model (Maum) For Selecting Information Technologies In The Construction Industry , Tarek Elsayed Elmisalami

Retrospective Theses and Dissertations

The construction industry lags behind other industries in adopting new information technologies (ITs). The current construction procedures used to transfer data need to be updated. The most common data capture technologies are bar code and radio frequency identification (RFID) tagging. Although bar code and RFID systems are quite different, they might accomplish the same tasks.;In fact, so many new data capture technologies now exist that industry managers are often perplexed when they plan a new system. This research develops a decision tool that enables decision makers in the construction industry to select the most appropriate data capturing technology for ...


Interval Estimators Of Parameters For Normal One Sample And Balanced One-Way Random Effects Models When Data Are Rounded , Chiang-Sheng Lee Jan 2001

Interval Estimators Of Parameters For Normal One Sample And Balanced One-Way Random Effects Models When Data Are Rounded , Chiang-Sheng Lee

Retrospective Theses and Dissertations

In standard statistical analysis, data are typically assumed to be essentially exact. But in fact, all real data are reported to some smallest unit of measure related to the precision of the device used to produce them. We might call such data "rounded" because they are really obtained by "rounding to something." We first discuss the interval estimation of the parameters mu and sigma, when a single rounded sample comes from the N(mu, sigma 2) distribution with both parameters unknown. Then we discuss the interval estimation of variance components sigma and sigmatau if rounded data are from a balanced ...


Statistical Modeling And Design For Cmm-Type Data Locating Known Two-Dimensional Geometries , Dewi Rahardja Jan 2001

Statistical Modeling And Design For Cmm-Type Data Locating Known Two-Dimensional Geometries , Dewi Rahardja

Retrospective Theses and Dissertations

This research was motivated by a problem from a car-manufacturer that needed to compare/analyze two hood assembly fixtures. The consistency of the car hood placement was examined for both fixtures. A "constant width" gap between the hood and the car's body is preferred. A "wide" gap at one point and a "narrow" gap at another constitutes a bad quality placement of the car hood, and will affect customer satisfaction.;3-D data were taken using a Coordinate Measuring Machine (CMM) with 12 (fixed) probe paths to the hood. For each fixture, ten "12-dimensional" vectors were taken and the original ...


The Development Of In-Process Surface Roughness Prediction Systems In Turning Operation Using Accelerometer , Hanming Huang Jan 2001

The Development Of In-Process Surface Roughness Prediction Systems In Turning Operation Using Accelerometer , Hanming Huang

Retrospective Theses and Dissertations

Three in-process surface roughness prediction (ISRP) systems using linear multiple regression, fuzzy logic, and fuzzy nets algorisms, respectively, were developed to allow the prediction of real time surface roughness of a work piece on a turning operation. The surface roughness is predicted from feed rate, spindle speed, depth of cut, and machining vibration that is detected and collected by an accelerometer.;Two groups of data were collected for two cutters with nose radii of 0.016 and 0.031 inches, respective. A total of 162 training data sets and 54 testing data sets for each cutter were applied to train ...


Generation Planning For Electric Power Utilities Under Market Uncertainties: A Real Options Approach , Chung-Hsiao Wang Jan 2001

Generation Planning For Electric Power Utilities Under Market Uncertainties: A Real Options Approach , Chung-Hsiao Wang

Retrospective Theses and Dissertations

The generation business in the U.S. is currently undergoing a transition from a regulated monopoly toward an uncertain, competitive market. Under the competitive market, the price of electric power as well as the corresponding revenue may be much less certain than before. These market uncertainties have increased the significance of two critical factors in generation planning. These factors are financial risks and managerial flexibilities.;In order to quantitatively and objectively address these two factors in generation planning, in this dissertation, we design and analyze a series of mathematical models based on the real options approach for generation planning. Hence ...


Rapid Prototyping Technologies And Build Time Models, Lisa Armano Jan 2001

Rapid Prototyping Technologies And Build Time Models, Lisa Armano

Theses and Dissertations

No abstract provided.


Retention Of Female Faculty Members, Susan L. Murray, Mariesa Crow, Suzanna M. Rose Jan 2001

Retention Of Female Faculty Members, Susan L. Murray, Mariesa Crow, Suzanna M. Rose

Engineering Management and Systems Engineering Faculty Research & Creative Works

The recruitment and the retention of female undergraduate and graduate students into engineering courses is discussed. A similar challenge lies in recruiting female faculty member from the limited pool of candidates in several fields at most universities. It is found that about half the females who were hired did not stay at the university. It is suggested that programs should be introduced to encourage mentoring and career development as such improvements would benefit all faculty members both female and male.


Option Pricing Methods For Estimating Capacity Shortages, Dohyun Pak, Sarah M. Ryan Jan 2001

Option Pricing Methods For Estimating Capacity Shortages, Dohyun Pak, Sarah M. Ryan

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Uncertain demand combined with a positive lead time for adding capacity creates the risk of capacity shortage during the lead time. Accurate shortage estimation is very important to determine a capacity expansion policy. In this paper, we investigate four kinds of option pricing methods to estimate the shortage during a fixed lead time under the assumption of an exponential trend for demand growth. We compare the effect of the different shortage measures on the optimal parameters for an expansion policy over the long term.


A Framework For The Implementation Of An Iso 9000 Based Certification Program For Printed Circuit Board Manufacturers, Adam Y. Maamoun Jan 2001

A Framework For The Implementation Of An Iso 9000 Based Certification Program For Printed Circuit Board Manufacturers, Adam Y. Maamoun

Retrospective Theses and Dissertations

No abstract provided.


Use Of Incremental Adaptation And Habituation Regimens For Mitigating Optokinetic Side-Effects, David A. Graeber Jan 2001

Use Of Incremental Adaptation And Habituation Regimens For Mitigating Optokinetic Side-Effects, David A. Graeber

Retrospective Theses and Dissertations

The use of incremental and repeated exposures regimens have been put forth as effective means to mitigate visually induced motion sickness based on the Dual Process Theory (DPT) (Groves & Thompson, 1970) of neural plasticity. In essence, DPT suggests that by incrementing stimulus intensity the depression opponent process should be allowed to exert greater control over the net outcome than the sensitization opponent process, thereby minimizing side-effects. This conceptual model was tested by empirically validating the effectiveness of adaptation, incremental adaptation, habituation, and incremental habituation regimens to mitigate side-effects arising from exposure to an optokinetic drum. Forty college students from the ...


Preliminary Analysis Of A Biologically Inspired 1-Dof "Clock" Stabilized Hopper, Haldun Komsuoglu, Daniel E. Koditschek Jan 2001

Preliminary Analysis Of A Biologically Inspired 1-Dof "Clock" Stabilized Hopper, Haldun Komsuoglu, Daniel E. Koditschek

Departmental Papers (ESE)

We investigate the stability of a one degree of freedom mechanical spring-mass system modulated by a feed-forward "clock" that stiffens and relaxes a Hooke's law potential force according to a periodic rhythm. At the present early stage of inquiry, we offer sufficient conditions for local asymptotic stability of an isolated periodic orbit when there is no feedback to the clock at all but some viscous friction in the mechanism. We conjecture that, absent feedback, a lossless mechanical system cannot exhibit an asymptotically stable limit cycle in response to such rhythmic excitation.


Biofeedback Via Telehealth: A New Frontier For Applied Psychophysiology, Raymond A. Folen, Larry C. James, Jay E. Earles, Frank Andrasik Jan 2001

Biofeedback Via Telehealth: A New Frontier For Applied Psychophysiology, Raymond A. Folen, Larry C. James, Jay E. Earles, Frank Andrasik

US Army Research

Psychophysiological diagnostic and therapeutic methods, to include biofeedback, have been found to be empirically effective in the treatment of a variety of physical disorders. In many areas of the country, however, certified biofeedback practitioners are not well distributed, limiting patient access to this treatment modality. Psychologists at Tripler Army Medical Center have pioneered efforts to develop and provide these needed services via a telehealth venue. Such capability significantly improves access to care, particularly for patient’s located at considerable distance from the provider. As the telecommunications infrastructure in rural and remote areas is often quite basic, such a system must ...


Benchmarking In Heatlh Care Foodservice Operations, J.J. Reagon, C.M. Bedmar, M. Worley Jan 2001

Benchmarking In Heatlh Care Foodservice Operations, J.J. Reagon, C.M. Bedmar, M. Worley

US Army Research

A questionnaire focusing on benchmarking measures and practices was developed and pilot tested with 22 foodservice directors at healthcare facilities. A revised questionnaire was mailed nationwide to 200 members of the American Society of Healthcare Foodservice Administrators and 200 members of the American Dietetic Association Practice Group, Management in Food and Nutrition Systems. The 111 respondents (28% response rate) included mostly self-operating foodservice directors using conventional production systems at facilities with an average of 300 patient beds. Nearly all used some type of benchmarking; however, only 28 facilities were benchmarking clinical productivity. Eighty-eight directors had used a benchmarking partner. Most ...


Child Emotional Maltreatment: A 2-Year Study Of Us Army Cases, Linda K. Jellen, James E. Mccarroll, Laurie E. Thayer Jan 2001

Child Emotional Maltreatment: A 2-Year Study Of Us Army Cases, Linda K. Jellen, James E. Mccarroll, Laurie E. Thayer

US Army Research

Objective: Reports of childhood emotional maltreatment have increased greatly over the past decade. The objective of this research was to determine the types of emotional maltreatment substantiated in a community of US Army families residing temporarily in Germany. Such a description may help to improve the understanding of how a jurisdictional body defines emotional maltreatment in day-to-day practice.
Method: Data were obtained from a review of the minutes of case review committees (CRCs) for 181 cases of child emotional abuse in 1997–1998. We determined the type, number, and severity of incidents, the substantiation rate, and the situations to which ...


Manipulating Dna Conformation Using Intertwined Conducting Polymer Chains, Ramaswamy Nagarajan, Wei Liu, Jayant Kumar, Sukant K. Tripathy, Ferdinando F. Bruno, Lynne A. Samuelson Jan 2001

Manipulating Dna Conformation Using Intertwined Conducting Polymer Chains, Ramaswamy Nagarajan, Wei Liu, Jayant Kumar, Sukant K. Tripathy, Ferdinando F. Bruno, Lynne A. Samuelson

US Army Research

In the field of inherently conducting polymers, polyaniline (Pani) has elicited tremendous interest due to its promising electrical properties and unique redox tunability. Synthetic routes involving the use of polyelectrolytes have significantly improved the processability of polyaniline. Recently, a template guided synthesis catalyzed by an enzyme, horseradish peroxidase (HRP), has provided a means of polymerizing aniline under milder pH conditions (pH 4.3) and subsequently widened the choice of templates to more delicate biological macromolecules. Here we report a strategy that exploits the inherent molecular order as well as the polyelectrolyte behavior of DNA to enzymatically synthesize and biologically assemble ...