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Dissertations / Theses on the topic 'Operation Reseach'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Serbová, Eva. "Vícekriteriální hodnocení projektů v Raiffeisen Bank." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-113475.

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Diploma thesis describes the slection of supplier of testing services for Everest project at Raiffeisenbank a. s. with aid of methods of multi-criteria decision and operation research. Thesis compares achieved results with the decision made in real tender realised in year 2010. Solution deals with two approaches via operation research. For the first round of tender were used three methods of multi-criteria evaluation of alternatives, WSA, TOPSIS and ELECTRE III. According to the results of each method were chosen suppliers who advanced to the next round. Second round operates with prices of pa

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2

Strednansky, Susan E. "Balancing the Trinity the Fine Art of Conflict Termination /." Maxwell AFB, Ala. : Air University Research Coordinator Office, 1998. http://www.au.af.mil/au/database/research/ay1995/saas/strednse.htm.

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3

Ben-Zvi, Noa. "(OR)² : operations research applied to operating room supply chain." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91096.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014. In conjunction with the Leaders for Global Operations Program at MIT.<br>Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2014. In conjunction with the Leaders for Global Operations Program at MIT.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 63).<br>Massachusetts General Hospital (MGH) is ranked as the top hospital in New England and second nation-wide. It is also the largest hospital in New England; it

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4

Puikko, J. (Janne). "An exact management method for demand driven, industrial operations." Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514261879.

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Abstract The framing into demand driven operations is because of the operations research modelling approach. The modelling approach requires continuous regressors and an independent response factor. The demand as an operating factor is considered as independent response factor in relation to the continuous regressors. The method validation is made along several longitudinal case studies to cover local, global and international industrial operations. The examined operational scope is from continuous operations to one-off production. Concerning scheduling, these examined demand driven, industria

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Polo, Mejia Oliver Javier. "Operational research approach for optimising the operations of a nuclear research laboratory." Thesis, Toulouse, INSA, 2019. http://www.theses.fr/2019ISAT0033.

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Cette thèse présente les résultats d’un projet de recherche visant l’optimisation du processus d’ordonnancement d’activités au sein d’un laboratoire de recherche du Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA). Pour aborder ce problème, nous décomposons chaque activité en un ensemble de tâches élémentaires pour appliquer des méthodes classiques d’ordonnancement. Nous modélisons le problème d’ordonnancement du laboratoire comme une version étendue du problème de gestion de projet multi-compétences (Multi-Skill Project Scheduling Problem ou MSPSP). En première approche, n

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6

Sabwa, Jean-Marie. "Modeling of Spaza shop operations using soft and hard operational research techniques." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/7698.

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Includes bibliographical references (leaves 90-93).<br>Globalization has transformed the world into a big village in which the rich are becoming richer and the poor getting poorer. In the commercial world the trend is for big business to buy out the smaller companies and consequently get bigger. Yet it is arguable that small businesses have assisted in providing much needed services to small communities that occupy informal settlements and exist on or below the poverty datum line. The South African government has amongst its main objectives the alleviation of poverty and the improvement of lif

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Flisberg, Patrik. "Application of operations research in operative planning in the forest industry /." Linköping : Department of Mathematics, Linköpings universitet, 2007. http://www.bibl.liu.se/liupubl/disp/disp2007/tek1104s.pdf.

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Gunna, Vivek Reddy. "ADAPTIVE MULTI-OBJECTIVE OPERATING ROOM PLANNING WITH STOCHASTIC DEMAND AND CASE TIMES." UKnowledge, 2017. https://uknowledge.uky.edu/me_etds/108.

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The operating room (OR) is accountable for most hospital admissions and is one of the most cost and work intensive areas in the hospital. From recent trends, we discover an unexpected parallel increase in expenditure and waiting time. Therefore, improving OR planning has become obligatory, particularly regarding utilization, and service level. Significant challenges in OR planning are the high variations in demand, processing times of surgical specialties, the trade-off between the objectives, and control of OR performance in long-term. Our model provides OR configurations at a strategical lev

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9

Howard, Stephen P. "Special Operations Forces and Unmanned Aerial Vehicles Sooner or Later? /." Maxwell AFB, Ala. : Air University Research Coordinator Office, 1998. http://www.au.af.mil/au/database/research/ay1995/saas/howardsp.htm.

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Thesis (M.M.A.S.)--School of Advanced Airpower Studies, 1995.<br>Subject: An analysis of whether Special Operations Forces should use Unmanned Aerial Vehicles to support intelligence, surveillance, reconnaissance, communications and re-supply capability deficiencies. Cover page date: June 1995. Vita. Includes bibliographical references.

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10

Rolland, Erik. "Abstract heuristic search methods for graph partitioning." Connect to resource, 1991. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1262633923.

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11

Brinker, Kirk E. Smith Dirk H. "Operational Detachment-Bravo an in-depth analysis of the ODB's advisory role in support of FID/COIN operations /." Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FBrinker.pdf.

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Thesis (M.S. in Defense Analysis)--Naval Postgraduate School, December 2009.<br>Thesis Advisor(s): Tucker, David. Second Reader: Simons, Anna. "December 2009." Description based on title screen as viewed on January 26, 2010 Author(s) subject terms: United States Special Forces, Operational, Detachment Bravo, Advanced Operational Base, B-Team, Special Forces Headquarters Company, Irregular Warfare, IW, Foreign Internal Defense, FID, Counter Insurgency, COIN, Advisory capability, USSF, USSF doctrine, Unconventional Warfare, UW, Indigenous Forces, Host Nation, Operational Role Includes bibliograp

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12

Kiser, Jennifer. "Developing Optimization Techniques for Logistical Tendering Using Reverse Combinatorial Auctions." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etd/3460.

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In business-to-business logistical sourcing events, companies regularly use a bidding process known as tendering in the procurement of transportation services from third-party providers. Usually in the form of an auction involving a single buyer and one or more sellers, the buyer must make decisions regarding with which suppliers to partner and how to distribute the transportation lanes and volume among its suppliers; this is equivalent to solving the optimization problem commonly referred to as the Winner Determination Problem. In order to take into account the complexities inherent to the pr

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Cross, Nicholas J. "The Impact of Executing a Warehouse Management System Change: A Case Study." TopSCHOLAR®, 2019. https://digitalcommons.wku.edu/theses/3162.

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The increased demand on distribution centers to provide quicker turnarounds from receiving to shipping while maintaining precise inventory accuracies is spurring the acquisition of a warehouse management system (WMS) to improve operations and increase efficiency. With the rapid expansion of WMS technology, it seems inevitable that warehouses will outgrow inefficient operational processes and switch to a system that can accommodate rapid development. Research has explained the financial burdens and benefits of acquiring a WMS, but there’s been minimal research describing the impacts of the actu

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14

Walker, Daniel R. "The Organization and Training of Joint Task Forces." Maxwell AFB, Ala. : Air University Research Coordinator Office, 1998. http://www.au.af.mil/au/database/research/ay1995/saas/walkerdr.htm.

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Thesis (M.M.A.S.)--School of Advanced Airpower Studies, 1995.<br>Subject: Examines the organization, training, doctrine, and experience of joint task forces within each of the five geographically tasked unified commands. Cover page date: June 1995. Vita. Includes bibliographical references.

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15

Tubbs, James O. "Beyond Gunboat Diplomacy Forceful Applications of Airpower In Peace Enforcement Operations /." Maxwell AFB, Ala. : Air University Research Coordinator Office, 1998. http://www.au.af.mil/au/database/research/ay1995/saas/tubbsjo.htm.

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Thesis (M.M.A.S.)--School of Advanced Airpower Studies, 1995.<br>Subject: The application of airpower to peace enforcement operations. Cover page date: June 1995. Vita. Includes bibliographical references.

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16

Bukenberger, Jesse Paul. "A Set Union Based Formulation for Course Scheduling and Timetabling." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1250.

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The Course Timetabling Problem is a widely studied optimization problem where a number of sections are scheduled in concert with the assignment of students to sections in order to maximize the desirability of the resulting schedule for all stakeholders. This problem is commonly solved as a linear program with variables for each student or group of students with identical schedules. In this paper we explore an alternative formulation that aggregates binary student variables into integer variables denoting the number of students enrolled in a course. Our solution method assumes decomposition of

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17

Saeed, Muhammad. "Production and Delivery (Optimization of production system and reliability)." Thesis, Högskolan Dalarna, Datateknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-4728.

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This thesis is done to solve two issues for Sayid Paper Mill Ltd Pakistan. Section one deals with a practical problem arise in SPM that is cutting a given set of raw paper rolls of known length and width, and a set of product paper rolls of known length (equal to the length of raw paper rolls) and width, practical cutting constraints on a single cutting machine, according to demand orders for all customers. To solve this problem requires to determine an optimal cutting schedule to maximize the overall cutting process profitability while satisfying all demands and cutting constraints. The aim o

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18

Bedri, Fatima Abd Elkariem. "An operation research model for cotton trading." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293680.

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19

Khan, Hamzah I. "Evaluating Flexibility Metrics on Simple Temporal Networks with Reinforcement Learning." Scholarship @ Claremont, 2018. https://scholarship.claremont.edu/hmc_theses/116.

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Simple Temporal Networks (STNs) were introduced by Tsamardinos (2002) as a means of describing graphically the temporal constraints for scheduling problems. Since then, many variations on the concept have been used to develop and analyze algorithms for multi-agent robotic scheduling problems. Many of these algorithms for STNs utilize a flexibility metric, which measures the slack remaining in an STN under execution. Various metrics have been proposed by Hunsberger (2002); Wilson et al. (2014); Lloyd et al. (2018). This thesis explores how adequately these metrics convey the desired information

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20

Girotra, Karan. "Essays in operations management." online access from Digital Dissertation Consortium, 2007. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3260909.

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21

Leung, Ngai-Hang Zachary. "Three essays in operations management." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92698.

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Thesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>The thesis applies optimization theory to three problems in operations management. In the first part of the thesis, we investigate the impact of inventory control on the availability of drugs to patients at public health facilities in Zambia. We present consistent empirical data and simulation results showing that, because of its failure to properly anticipate seasonal variations in demand and su

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Abedini, Amin. "TRADE-OFF BALANCING FOR STABLE AND SUSTAINABLE OPERATING ROOM SCHEDULING." UKnowledge, 2019. https://uknowledge.uky.edu/me_etds/141.

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The implementation of the mandatory alternative payment model (APM) guarantees savings for Medicare regardless of participant hospitals ability for reducing spending that shifts the cost minimization burden from insurers onto the hospital administrators. Surgical interventions account for more than 30% and 40% of hospitals total cost and total revenue, respectively, with a cost structure consisting of nearly 56% direct cost, thus, large cost reduction is possible through efficient operation management. However, optimizing operating rooms (ORs) schedules is extraordinarily challenging due to th

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23

Kaczynski, William H. "Computational applications in stochastic operations research." W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539623340.

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Several computational applications in stochastic operations research are presented, where, for each application, a computational engine is used to achieve results that are otherwise overly tedious by hand calculations, or in some cases mathematically intractable. Algorithms and code are developed and implemented with specific emphasis placed on achieving exact results and substantiated via Monte Carlo simulation. The code for each application is provided in the software language utilized and algorithms are available for coding in another environment. The topics include univariate and bivariate

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24

Sianturi, Maikel. "Operations research applied to forestry management." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ53253.pdf.

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25

Ahmadi, Ehsan. "Optimization-based Decision Support Tools for Managing Surgical Supplies and Sterile Instruments." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564482727428522.

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26

Almoustafa, Samira. "Distance-constrained vehicle routing problem : exact and approximate solution (mathematical programming)." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/7640.

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The asymmetric distance-constrained vehicle routing problem (ADVRP) looks at finding vehicle tours to connect all customers with a depot, such that the total distance is minimised; each customer is visited once by one vehicle; every tour starts and ends at a depot; and the travelled distance by each vehicle is less than or equal to the given maximum value. We present three basic results in this thesis. In the first one, we present a general flow-based formulation to ADVRP. It is suitable for symmetric and asymmetric instances. It has been compared with the adapted Bus School Routing formulatio

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Gopal, Kartik. "Modeling and Optimization of Hospital Transportation System." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1481314351566885.

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Wang, Hai Ph D. Massachusetts Institute of Technology. "Design and operation of a last mile transportation system." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98568.

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Thesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 143-149).<br>The Last Mile Problem refers to the provision of travel service from the nearest public transportation node to a home or office. Last Mile Transportation Systems (LMTS) are critical extensions to traditional public

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Bryant, Corban Harrell. "Robust planning for Effects-Based Operations." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37570.

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Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2006.<br>Includes bibliographical references (p. 171-176).<br>In this thesis. we introduce and analyze methods of creating theater-level robust mission plans for Effects Based Operations (EBO) of teams of Unmanned Aerial Vehicles (UAVs), and propose methods of effectively presenting the robust plan to an end user. Recent conflicts have demonstrated the utility of UAVs in performing Intelligence, Surveillance, and Reconnaissance (ISR) and strike missions. As UAVs become more common, hig

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Wang, Li Ph D. Massachusetts Institute of Technology. "Online and offline learning in operations." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129080.

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Thesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, September, 2020<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 213-219).<br>With the rapid advancement of information technology and accelerated development of data science, the importance of integrating data into decision-making has never been stronger. In this thesis, we propose data-driven algorithms to incorporate learning from data in three operations problems, concerning both online learning and offline learning settings. First, we study a

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31

Yang, Kejian. "Topics in production." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1173295319.

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Weaver, Paul R. "Development and evaluation of an automated decision aid for rapid re-tasking of air strike assets in response to time sensitive targets." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FWeaver.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2004.<br>Thesis advisor(s): Richard E. Rosenthal, Thomas Hoivik. Includes bibliographical references (p. 77). Also available online.

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33

Sharifi, Mokhtarian Faranak. "Analytic center cutting plane and path-following interior-point methods in convex programming and variational inequalities." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35615.

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Interior-point methods have not only shown their efficiency for linear and some nonlinear programming problems, but also for cutting plane methods and large scale optimization. The analytic center cutting plane method uses the analytic center of the current polyhedral approximation of the feasible region to add a new cutting plane. In this thesis, analytic center cutting plane and path-following interior-point methodologies are used to solve the following problems: (1) convex feasibility problems defined by a deep cut separation oracle; (2) convex optimization problems involving a nonlinear ob

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34

Bain, Matthew D. "Supporting a Marine Corps Distributed Operations Platoon a quantitative analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FBain.pdf.

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35

Chang, Kok Meng. "The performance of edge organizations in a collaborative task." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Dec%5FChang.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, December 2005.<br>Thesis Advisor(s): Susan M. Sanchez, Paul J. Sanchez. Includes bibliographical references (p. 75). Also available online.

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36

Seichter, Stephan. "The Fast Theater Model (FATHM) : optimization of air-to-ground engagements as a defender-attacker model /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Dec%5FSeichter.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, December 2005.<br>Thesis Advisor(s): Robert F. Dell, Gerald G. Brown. Includes bibliographical references (p. 57). Also available online.

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Maeng, Honjae. "An application of technological maturity assessment to ROKAF T-50 aircraft production program." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Dec%5FMaeng.pdf.

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Kassanke, Stephan. "Ontologiebasierte Strukturierung von Lernobjekten in der Domäne Operations Research, Management Science und Einbettung in ein hypermediales Lernsystem." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973573449.

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Wiedemann, Michael. "Robust parameter design for agent-based simulation models with application in a cultural geography model." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Jun/10Jun%5FWiedemann.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2010.<br>Thesis Advisor(s): Johnson, Rachel T. ; Second Reader: Baez, Francisco R, "June 2010." Description based on title screen as viewed on July 15, 2010. Author(s) subject terms: Cultural Geography, Agent-Based Model (ABM), Irregular Warfare (IW), Theory of planned Behavior (TpB), Baysian Belief Nets (BBN), Counterinsurgency Operations (COIN), Stability Operations, Discrete Event Simulation (DES), Design of Experiments (DOX), Robust Parameter Design (RPD). Includes bibliographical references (p. 69-70). Also available in

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Bodden, Huntley J. "A survivability assessment of the transformable craft in an operational environment." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Jun/10Jun%5FBodden.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2010.<br>Thesis Advisor(s): Horne, Gary E. ; Second Reader: Lucas, Thomas W. "June 2010." Description based on title screen as viewed on July 14, 2010. Author(s) subject terms: Transformable Craft, T-Craft, Sea base, Sea base Connector. Includes bibliographical references (p. 87-89). Also available in print.

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Tsoutis, Anastasios. "An analysis of the Joint Strike Fighter autonomic logistics system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FTsoutis.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, September 2006.<br>Thesis Advisor(s): Arnold H. Buss. "September 2006." Includes bibliographical references (p. 87-88). Also available in print.

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Dozier, Pamela C. "Using dynamic sustainment to determine the impact of varying levels of reliability on future combat systems maintenance requirements." Thesis, Monterey, Calif. : Naval Postgraduate School, 2006. http://bosun.nps.edu/uhtbin/hyperion.exe/06Dec%5FDozier.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, December 2006.<br>Thesis Advisor(s): Samuel E. Buttrey. "December 2006." Includes bibliographical references (p. 59-61). Also available in print.

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Lim, Hang Sheng. "A methodological approach for conducting a business case analysis for the Joint Distance Support and Response (JDSR) Advanced Concept Technology Demonstration (ACTD)." Thesis, Monterey, Calif. : Naval Postgraduate School, 2006. http://bosun.nps.edu/uhtbin/hyperion.exe/06Dec%5FLim%5FHang.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, December 2006.<br>Thesis Advisor(s): Dan Nussbaum, David Meyer. "December 2006." Includes bibliographical references (p. 71-72). Also available in print.

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Kramer, Jeremy Daniel. "Min-Cost Multicommodity Network Flows: A Linear Case for the Convergence and Reoptimization of Multiple Single-Commodity Network Flows." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-04242009-204158/.

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Network Flow problems are prevalent in Operations Research, Computer Science, Industrial Engineering and Management Science. They constitute a class of problems that are frequently faced by real world applications, including transportation, telecommunications, production planning, etc. While many problems can be modeled as Network Flows, these problems can quickly become unwieldy in size and difficult to solve. One particularly large instance is the Min-Cost Multicommodity Network Flow problem. Due to the time-sensitive nature of the industry, faster algorithms are always desired: recent advan

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Mathews, Reena. "Simple Strategies to Improve Data Warehouse Performance." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-05172004-213304/.

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Data warehouse management is fast becoming one of the most popular and important topics in industries today. For business executives, it promises significant competitive advantage for their companies, while presenting the information system managers a way to overcome the obstructions in providing business information to managers and other users. Here the company is going through the problem of inefficient performance of its data warehouse. To find an appropriate solution to this problem we first try to understand the data warehouse concept and its basic architecture, followed by an in depth st

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Lin, Yu-Min. "Tabu Search and Genetic Algorithm for Phylogeny Inference." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-10092008-235130/.

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Phylogenetics is the study of evolutionary relations between different organisms. Phylogenetic trees are the representations of these relations. Researchers have been working on finding fast and systematic approaches to reconstruct phylogenetic trees from observed data for over 40 years. It has been shown that, given a certain criterion to evaluate each tree, finding the best fitted phylogenetic trees among all possible trees is an NP-hard problem. In this study, we focus on the topology searching techniques for the maximum-parsimony and maximum-likelihood phylogeny inference. We proposed two

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Lea, Djuana. "Soft Computing Approaches to Routing and Wavelength Assignment in Wavelength-Routed Optical Networks." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-10312004-195203/.

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The routing and wavelength assignment (RWA) problem is essential for achieving efficient performance in wavelength-routed optical networks. For a network without wavelength conversion capabilities, the RWA problem consists of selecting an appropriate path and wavelength for each connection request while ensuring that paths that share common links are not assigned the same wavelength. The purpose of this research is to develop efficient adaptive methods for routing and wavelength assignment in wavelength-routed optical networks with dynamic traffic. The proposed methods utilize soft computing t

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Langville, Amy N. "Preconditioning for Stochastic Automata Networks." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-20020326-002140.

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<p>Many very large Markov chains can be modeled efficiently as Stochastic Automata Networks (SANs). A SAN iscomposed of individual automata that, for the most part, act independently, requiring only infrequentinteraction. SANs represent the generator matrix Q of the underlying Markov chain compactly as the sum ofKronecker products of smaller matrices. Thus, storage savings are immediate. The benefit of a SAN's compactrepresentation, known as the descriptor, is often outweighed by its tendency to make analysis of theunderlying Markov chain tough. Although iterative or projection methods have be

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Alnowibet, Khalid Abdulaziz. "Nonstationary Erlang Loss Queues and Networks." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-04222004-192735/.

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The nonstationary Erlang loss model is a queueing system consisting of a finite number of servers and no waiting room with a nonstationary arrival process or a time-dependent service rate. The Erlang loss model is commonly used to model and evaluate many communication systems. Often, these types of service systems encounter a change in the arrival rate over time while the service rate remains either constant or changes very little over time. In view of this, the focus in this research is the nonstationary Erlang loss queues and network with time-dependent arrival rate and constant service rate

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Asgharzadeh, Talebi Zohreh. "Exact and Heuristic Methods for solving the View-Selection Problem for Aggregate Queries." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-05092006-123513/.

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In this thesis we present a formal study of the following view-selection problem: Given a set of queries, a database, and an upper bound on the amount of disk space that can be used to store materialized views, return definitions of views that, when materialized in the database, would reduce the evaluation costs of the queries. Optimizing the layout of stored data using view selection has a direct impact on the performance of the entire database system. At the same time, the optimization problem is intractable, even under natural restrictions on the types of queries of interest. We introduce a

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