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Operations Research, Systems Engineering and Industrial Engineering Commons

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2005

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Articles 61 - 90 of 184

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

Evaluation Of Time-Varying Availability In Multi-Echelon Inventory System With Combat Damage, Hoong Chuin Lau, Huawei Song Aug 2005

Evaluation Of Time-Varying Availability In Multi-Echelon Inventory System With Combat Damage, Hoong Chuin Lau, Huawei Song

Research Collection School Of Computing and Information Systems

The models for multi-echelon inventory systems in existing literatures predominantly address failures due to reliability in peacetime. In wartime or even peacetime operational scenarios, unexpected combat damage can cause a large number of systems to be heavily damaged, to the extent that they become irreparable. In this paper, we study a multi-echelon spare parts support system under combat damage, discuss the replenishment policy and propose an approximate method to evaluate the time-varying system performance operational availability considering the effect of passivation. Experiments show our model works well and efficiently against simulation.


Stability Analysis For Forging Of Porous Bodies, Xuan Wang, Eugene Olevsky, Alain Molinari Jul 2005

Stability Analysis For Forging Of Porous Bodies, Xuan Wang, Eugene Olevsky, Alain Molinari

Industrial and Manufacturing Engineering

The continuum theory of sintering is used for the analysis of the stability of forging of a cylindrical powder specimen. The constitutive properties of the powder material are assumed to follow a power-law creep relationship. Temperature-coupled linear non-uniform stability analyses are carried out. Stability maps are obtained for forging of copper powder components.


Acuta Enews July 2005, Vol. 34, No. 7 Jul 2005

Acuta Enews July 2005, Vol. 34, No. 7

ACUTA Newsletters

In This lssue

Meet the ACUTA Board for 2005-2006

Communities of lnterest.................................. Jeri A. Semer, CAE, ACUTA Executive Director

Tech Talk: Advances Opening Up in the World of Storage ............................. Kevin Tanzillo, Dux PR

DC Update Whitney Johnson, Retired, No. Michigan Univ.

11th Circuit Court Reverses Decision on LD Excise Tax .................. Ed Quinn, Ohio State University

FYI: Useful lnformation from the Campus Student Monitor

Member Anniversaries

Board Report ............................ Carmine Piscopo, Providence College

Web Tip: Upload Documents to Resource Library................... Aaron Fuehrer, ACUTA Computer Services Mgr.

Welcome New Members

ACUTA Online Press Room


Review Of Academy Of Distinguished Teachers, Paul Savory Jul 2005

Review Of Academy Of Distinguished Teachers, Paul Savory

Industrial and Management Systems Engineering: Reports

The University of Nebraska–Lincoln established the Academy of Distinguished Teachers in 1994. Academy members are to engage in activities to support teaching at UNL. Such activities may include (but were not limited to), speaking about teaching and pedagogy at department, college, campus, state, regional, and national meetings, allowing other faculty to observe one's teaching, and serving in an advisory capacity to the Office of the Senior Vice Chancellor for Academic Affairs on matters related to teaching at UNL. Following my selection into the UNL Academy of Distinguished Teachers in 2004, I explored ideas for how the structure of our campus …


Exploiting Belief Bounds: Practical Pomdps For Personal Assistant Agents, Pradeep Varakantham, Rajiv Maheswaran, Milind Tambe Jul 2005

Exploiting Belief Bounds: Practical Pomdps For Personal Assistant Agents, Pradeep Varakantham, Rajiv Maheswaran, Milind Tambe

Research Collection School Of Computing and Information Systems

Agents or agent teams deployed to assist humans often face the challenges of monitoring the state of key processes in their environment (including the state of their human users themselves) and making periodic decisions based on such monitoring. POMDPs appear well suited to enable agents to address these challenges, given the uncertain environment and cost of actions, but optimal policy generation for POMDPs is computationally expensive. This paper introduces three key techniques to speedup POMDP policy generation that exploit the notion of progress or dynamics in personal assistant domains. Policy computation is restricted to the belief space polytope that remains …


Approximate Strategic Reasoning Through Hierarchical Reduction Of Large Symmetric Games, Michael P. Wellman, Daniel M. Reeves, Kevin M. Lochner, Shih-Fen Cheng, Rahul Suri Jul 2005

Approximate Strategic Reasoning Through Hierarchical Reduction Of Large Symmetric Games, Michael P. Wellman, Daniel M. Reeves, Kevin M. Lochner, Shih-Fen Cheng, Rahul Suri

Research Collection School Of Computing and Information Systems

To deal with exponential growth in the size of a game with the number of agents, we propose an approximation based on a hierarchy of reduced games. The reduced game achieves savings by restricting the number of agents playing any strategy to fixed multiples. We validate the idea through experiments on randomly generated local-effect games. An extended application to strategic reasoning about a complex trading scenario motivates the approach, and demonstrates methods for game-theoretic reasoning over incompletely-specified games at multiple levels of granularity.


The Use Of Rfid In Manufacturing And Packaging Technology Laboratories, Manocher Djassemi, Jay Singh Jun 2005

The Use Of Rfid In Manufacturing And Packaging Technology Laboratories, Manocher Djassemi, Jay Singh

Industrial Technology and Packaging

Mandated use of Radio Frequency Identification (RFID) on goods at pallet, case and item level continues to churn the Consumer Product Goods (CPG), logistics and retail industry. The statement “Internet of things” is slowly becoming true; with concerted efforts from standard setting bodies such as Electronic Product Code (EPC) global, International Standards Organization (ISO), Fast Moving Consumer Goods (FMCG) companies like Gillette, P&G and major retailers like Wal-Mart, TESCO, and the US DoD, to replace barcodes with RFID tags. RFID bridges many areas of manufacturing including inventory management, assembly operation, material handling, packaging and shipping by providing an accurate and …


Algorithmic Analysis Of The Maximum Level Length In General-Block Two-Dimensional Markov Processes, Jesus R. Artalejo, Srinivas R. Chakravarthy Jun 2005

Algorithmic Analysis Of The Maximum Level Length In General-Block Two-Dimensional Markov Processes, Jesus R. Artalejo, Srinivas R. Chakravarthy

Industrial & Manufacturing Engineering Publications

Two-dimensional continuous-time Markov chains (CTMCs) are useful tools for studying stochastic models such as queueing, inventory, and production systems. Of particular interest in this paper is the distribution of the maximal level visited in a busy period because this descriptor provides an excellent measure of the system congestion. We present an algorithmic analysis for the computation of its distribution which is valid for Markov chains with general-block structure. For a multiserver batch arrival queue with retrials and negative arrivals, we exploit the underlying internal block structure and present numerical examples that reveal some interesting facts of the system.


The Effectiveness Analysis Of The Online Tools For Engineering Faculty Needs, Ismail Fidan, Jianbiao Pan, Leijun Li Jun 2005

The Effectiveness Analysis Of The Online Tools For Engineering Faculty Needs, Ismail Fidan, Jianbiao Pan, Leijun Li

Industrial and Manufacturing Engineering

As the use of Internet is increasing dramatically, many faculty members are using it in their teaching, research, and services. The Internet also provides faculty easy access to employee benefits and other information. Many universities are using or plan to use online teaching. Lately, many editorial and funding agencies have also started to initiate online review and decision-making system. These systems have eased the burden on both reviewers and agencies. In this study, a survey was prepared and conducted to investigate the effectiveness of the online tools for faculty needs in authors’ institutions and some other United States universities. The …


Fouling Mitigation By Design, J. M. Nesta, C. A. Bennett Jun 2005

Fouling Mitigation By Design, J. M. Nesta, C. A. Bennett

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Mathematical Modeling Of Deposition Of Carbonaceous Material From Heavy Hydrocarbon Vapors, Wenxing Zhang, A. Paul Watkinson Jun 2005

Mathematical Modeling Of Deposition Of Carbonaceous Material From Heavy Hydrocarbon Vapors, Wenxing Zhang, A. Paul Watkinson

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Deposit Formation In The Evaporator Of A Sulphuric Acid Recovery Plant For Tio 2 Pigment Production, H. Müller-Steinhagen, D. Lancefield Jun 2005

Deposit Formation In The Evaporator Of A Sulphuric Acid Recovery Plant For Tio 2 Pigment Production, H. Müller-Steinhagen, D. Lancefield

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Fouling Behavior Of Pyrolysis Gasoline Over Carbon Steel And Stainless Steel Alloys, Michael Sprague, Patricio Herrera, Andrzej Krzywicki Jun 2005

Fouling Behavior Of Pyrolysis Gasoline Over Carbon Steel And Stainless Steel Alloys, Michael Sprague, Patricio Herrera, Andrzej Krzywicki

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Deposition From Crude Oils In Heat Exchangers, A. Paul Watkinson Jun 2005

Deposition From Crude Oils In Heat Exchangers, A. Paul Watkinson

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Contributing Factor Analysis And Its Application For An Alcohol Plant Reboiler Fouling Phenomena, Shinji Isogai, Mitsutaka Nakamura, Seijirou Nishimura Jun 2005

Contributing Factor Analysis And Its Application For An Alcohol Plant Reboiler Fouling Phenomena, Shinji Isogai, Mitsutaka Nakamura, Seijirou Nishimura

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Development And Evaluation Of Ni–Cu–P–Ptfe Composite Coatings To Minimize Microbial Adhesion, Q. Zhao, Y. Liu, C. Wang, S. Wang, Hans M. Müller-Steinhagen Jun 2005

Development And Evaluation Of Ni–Cu–P–Ptfe Composite Coatings To Minimize Microbial Adhesion, Q. Zhao, Y. Liu, C. Wang, S. Wang, Hans M. Müller-Steinhagen

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Fouling Mitigation Of A Reboiler By Optimization Of Additive And Operating Conditions, Shinji Isogai, Mitsutaka Nakamura Jun 2005

Fouling Mitigation Of A Reboiler By Optimization Of Additive And Operating Conditions, Shinji Isogai, Mitsutaka Nakamura

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Ten Years Of Ebert, Panchal And The ‘Threshold Fouling’ Concept, D. I. Wilson, G. T. Polley, S. J. Pugh Jun 2005

Ten Years Of Ebert, Panchal And The ‘Threshold Fouling’ Concept, D. I. Wilson, G. T. Polley, S. J. Pugh

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Particulate Fouling Growth Rate As Influenced By The Change In The Fouling Layer Structure, M. S. Abd-Elhady, C.C. M. Rindt, J. G. Wijers, A. A. Van Steenhoven Jun 2005

Particulate Fouling Growth Rate As Influenced By The Change In The Fouling Layer Structure, M. S. Abd-Elhady, C.C. M. Rindt, J. G. Wijers, A. A. Van Steenhoven

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


A Preliminary Study Of The Effect Of Surface Coating On The Initial Deposition Mechanisms Of Dairy Fouling, S. S. Ramachandra, S. Wiehe, M. M. Hyland, X. D. Chen, B. Bansal Jun 2005

A Preliminary Study Of The Effect Of Surface Coating On The Initial Deposition Mechanisms Of Dairy Fouling, S. S. Ramachandra, S. Wiehe, M. M. Hyland, X. D. Chen, B. Bansal

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Extraction Of Crude Oil Fouling Model Parameters From Plant Exchanger Monitoring, G. T. Polley, D. I. Wilson, S. J. Pugh, E. Petitjean Jun 2005

Extraction Of Crude Oil Fouling Model Parameters From Plant Exchanger Monitoring, G. T. Polley, D. I. Wilson, S. J. Pugh, E. Petitjean

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


The Fouling Of Alloy-800 Heat Exchanger Tubes By Nickel Ferrite Under Bulk Boiling Conditions, J. J. Cossaboom, D. H. Lister Jun 2005

The Fouling Of Alloy-800 Heat Exchanger Tubes By Nickel Ferrite Under Bulk Boiling Conditions, J. J. Cossaboom, D. H. Lister

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Anti-Fouling Stainless Steel Based Surfaces For Milk Heating Processes, R. Rosmaninho, G. Rizzo, H. Müller-Steinhagen, L. F. Melo Jun 2005

Anti-Fouling Stainless Steel Based Surfaces For Milk Heating Processes, R. Rosmaninho, G. Rizzo, H. Müller-Steinhagen, L. F. Melo

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Blending Effects On Fouling Of Four Crude Oils, Z S. Saleh, R. Sheikholeslami, A. Paul Watkinson Jun 2005

Blending Effects On Fouling Of Four Crude Oils, Z S. Saleh, R. Sheikholeslami, A. Paul Watkinson

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Enhanced Heat Exchanger Tubes: Their Fouling Tendency And Potential Cleanup, George F. Hays, Edward S. Beardwood, Steven J. Colby Jun 2005

Enhanced Heat Exchanger Tubes: Their Fouling Tendency And Potential Cleanup, George F. Hays, Edward S. Beardwood, Steven J. Colby

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Particulate Fouling In Micro-Structured Devices, N. Kockmann, M. Engler, P. Woias Jun 2005

Particulate Fouling In Micro-Structured Devices, N. Kockmann, M. Engler, P. Woias

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Analytical Approaches For Calculation Of Shear Stress Enhancement In Laminar Pulsed Flows, M. S. Celnik, M. J. Patel, M. Pore, F. Brahim, W. Augustin, S. Scholl, D. M. Scott, D. I. Wilson Jun 2005

Analytical Approaches For Calculation Of Shear Stress Enhancement In Laminar Pulsed Flows, M. S. Celnik, M. J. Patel, M. Pore, F. Brahim, W. Augustin, S. Scholl, D. M. Scott, D. I. Wilson

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Today’S Techniques For Heat Exchanger Protection Via Particle Filtration, Kathy Colby, Caroline Hoffman Jun 2005

Today’S Techniques For Heat Exchanger Protection Via Particle Filtration, Kathy Colby, Caroline Hoffman

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Heat Treatment Of Dairy Product By A Flat Ohmic Cell: Impact Of The Reynolds Number, Fluid Rheology And Fouling Presence On The Electrode Surface Temperature, M. A. Ayadi, T. Benezech, F. Chopard, M. Berthou, J. C. Leuliet Jun 2005

Heat Treatment Of Dairy Product By A Flat Ohmic Cell: Impact Of The Reynolds Number, Fluid Rheology And Fouling Presence On The Electrode Surface Temperature, M. A. Ayadi, T. Benezech, F. Chopard, M. Berthou, J. C. Leuliet

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.


Tubular Type Heat Flux Meter For Monitoring Internal Scale Deposits In Large Steam Boilers, J. Taler, D. Taler Jun 2005

Tubular Type Heat Flux Meter For Monitoring Internal Scale Deposits In Large Steam Boilers, J. Taler, D. Taler

Heat Exchanger Fouling and Cleaning - Challenges and Opportunities

No abstract provided.