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Erzin, Sezai. "An implementation of integrated logistic support for Turkish Armed Forces." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA239293.
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Thesis (M.S. in Management)--Naval Postgraduate School, June 1990.Thesis Advisor(s): Mansager, Bard K. Second Reader: Moore, Thomas P. "June 1990." Description based on signature page as viewed on October 21, 2009. DTIC Identifier(s): Turkish Army, integrated logistics support, management role, life cycle costs. Author(s) subject terms: Turkish Army, integrated logistics support (ILS), management role, life cycle cost (LCC). Includes bibliographical references (p. 68-69). Also available in print.
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Hatch, Melanie L. "Concurrent optimization in designing for logistics support." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/39112.
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The military community has considerable experience in the areas of procuring and managing large systems. These systems are often expected to perform their intended function over a period of several years and as a result, they will require an extensive support structure consisting of personnel, equipment and spare assets. For this reason, Logistics Management has always been an important field within the military and is gaining recognition within private industry as well.
The evolutionary process which starts with the identification of a need and continues through design, production and retirement is known as a product's life cycle. Studies have shown that the decisions which are made initially, during the design of the product, will determine 80% of the total system costs. Several efforts have been initiated to improve the product design process and emphasize the life cycle approach. These include; Concurrent Engineering, Logistics Support Analysis (LSA) and Quality Function Deployment (QFD).
These efforts necessitate an overhaul of the decision-making methods used in the product design process. Consequently, within the military community and private industry, the time-honored sequential-hierarchical-decision approach to design is being replaced with concurrent decision-making. The sequential process of the hierarchical method can lead to suboptimal designs which significantly increase manufacturing and follow-on support costs.Ph. D.
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Jensen, Anne J. "A life cycle value assessment model for design, production, and logistic support systems." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45785.
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A new economic model for the evaluation of integrated Design, Production, and Logistic
Support Systems (DPLSSs) is designed and developed in this thesis. The DPLSS model was created
after a survey of Life Cycle Costing (LCC) applications revealed that no models for assessing
integrated design, production, and logistic support systems were available. The evaluation technique
the model is based on is called Life Cycle Value Assessment (LCVA). LCVA differs from
LCC in that it emphasizes consideration of life cycle revenues as well as costs.
The system addressed by the DPLSS model has a life cycle which includes product design, production capability design and construction, production, product distribution, logistic system support and maintenance, and system disposal. The baseline production capability assumed when developing the DPLSS model involves batch processing, forming the base material into individual units, and performing detailed processing operations. It has also been assumed that items produced are non-repairable.
The DPLSS model facilitates the evaluation of new DPLSSs by leading managers through the new LCVA methodology, A Cost Breakdown Structure (CBS) which is compatible with the DPLSS life cycle has been developed as a basis for the model. This CBS is used to address DPLSSs descriptively and nonnatively during LCVA evaluations.
A menu-driven computer program has also been developed to implement the DPLSS model on an IBM PC. This program leads users through the new LCVA-based methodology, performs economic and sensitivity analyses on their inputs, and then allows "what-if?â analyses on varying system configurations to be performed.
Master of Science
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Juřicová, Vendula. "Koncept montážní linky pro montáž centrální části systému termoregulace motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232183.
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This diploma thesis is focused on design of assemble unit technology for mounting the central part of motor heat regulation system. In the beginning the current status is described, followed by the analysis of mounting options, specifying assembly times and determining cycles of the assebly line and developing logistic support. The resulting layout should be ergonomically acceptable, cost-effective and efficient.
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Bouachera, Taoufik. "Whole life costing optimisation with integrated logistics support considerations." Thesis, Robert Gordon University, 2012. http://hdl.handle.net/10059/741.
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It has long been recognised that, in the military sector, the Integrated Logistics Support ILS can significantly enhance system effectiveness and add value to their competitiveness. Hence, it is not surprising that many organisations outside to the military support the ILS adoption to increase their competence level. Even though the ILS underlying theory is general, there is a lack of suitable methodology that facilitates ILS implementation in other industries such as Oil & Gas industry. In particular when considering complex systems with long life-span, the optimisation of maintenance-related activities is important to fulfil system readiness, safety and whole life cost requirements. Modern petroleum equipment like gas turbines and drilling rigs are dependent on readily available maintenance supports in order to maximise their operational ability. Therefore, it has been identified that the study should be conducted to an effective use of ILS with the petroleum industry. In doing so, the usage of the ILS framework as a decision tool for maintenance optimisation is outlined. This framework embraces ILS concepts to support asset managers in developing their maintenance strategies. Level of repair analysis and spare parts management have been identified as potential areas for enhancing the use of ILS. In particular, maintenance optimisation is approached as a trade-off between investment in spare parts level and repair capacity. The developed framework delivers cost-effective support strategies obtained with iterative optimisation algorithm built on heuristics and genetic algorithm techniques. Finally, this algorithm has been implemented into computational algorithms. The framework can be employed to identify the optimum level of spare parts and the optimum amount of repair capacity for multi echelon repair network and multi-indenture systems. The framework has been used to carry out optimisations intended to maximise the availability of gas turbines by varying logistics support parameters. Typical results have shown that a joint optimisation of spare parts and level of repair analysis leads to better results than optimising them separately and emphasises the need for the developed framework. As part of this research, an expert panel validation method has been used to both refine the design of the developed framework and also evaluate its functionality from experienced practitioners within the Algerian petroleum industry. The results of this validation have demonstrated the advantages of integrating spare part management and level of repair analysis LORA to the problem of maintenance optimisation and shown that the framework is able to deliver optimal maintenance supportability decisions. The generic framework developed in this thesis can be seen a novel and comprehensive model for integrating two ILS elements into the operating tool in a manner that improves maintenance support provision, while remaining both flexible and usable; and therefore as a contribution to a better adoption of ILS technique within Algerian Petroleum Industry.
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Kirilmaz, Elias, and Jennifer Quach. "Projektering av en järnvägsanläggning ur ett livscykelperspektiv : En fallstudie om hur infrastrukturförvaltare kan förbättra projektering av stora tekniska system med fokus på livscykelperspektivet." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39425.
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Syfte: Syftet med studien är att undersöka vilka faktorer som påverkar projektering av en järnvägsanläggning ur ett livscykelperspektiv. Målet är att tydliggöra vad Trafikverket behöver ta hänsyn till vid projektering av en järnvägsanläggning Syftet med studien är att undersöka vilka faktorer som påverkar projekteringen av järnvägsanläggningar utifrån ett Life Cycle Managementlångsiktigt hållbarhetsperspektiv perspektiv med fokus en centralpunkt inom på Integrated Logistic Support. Med detta avser studien att ge förslag på för atthur organisationen kunnakan uppnå långsiktiga lönsamhetsmål de krav som ställs på järnvägsanläggningen samt öka förutsägbarheten för livscykelkostnaden. Frågeställningar: Hur kan projektering av järnvägsanläggningar förbättras ur ett långsiktigtlivscykel perspektiv? Vilka faktorer behöver Trafikverket ta hänsyn till vid projekteringsfasen för att säkerställa tillförlitliga och kostnadseffektiva järnvägsanläggningar? Hur kan en arbetsmetodik formas för att främja en kostnadseffektiv järnvägsanläggning? Metod: Följande studie är baserad på en kvalitativ fallstudie av Trafikverket. Metoden är baserad på semistrukturerade intervjuer och dokumentationsmetodik för att erhålla empiriska data. Litteraturstudien och det teoretiska ramverket är baserade på expertgranskade tidskrifter, vetenskapliga artiklar och böcker som täcker studieområdena. Slutsats: Studien har visat att projektering av järnvägsanläggningar ur ett livscykelperspektiv kan förbättras genom att ta fram konkreta underlag för stödja de besluts som ska tas. Beslutsunderlag för järnvägsanläggningen bör baseras på olika analyser för att kunna värdera vilket alternativ som ger den mest kostnadseffektiva anläggningen samtidigt som det återspeglar de efterfrågade målen och kraven. Analyser ska inte enbart baseras på tekniska konstruktion utan även driften samt underhållet behöver beaktas eftersom de har en stor inverkan på utfallet av kapaciteten, prestandan samt kostnaderna över hela anläggningens livscykel. Vidare har studien visat vikten av att ha tillförlitliga system som kan ge information om anläggningen och även all data som krävs för att utföra analyser.Purpose: The purpose of the study is to investigate which factors affect the longlife cycle-term planning of a railway infrastructure. The aim is to clarify what the Swedish Transport Administration needs to take into account when planning a railway infrastructure in the future in order to meet the requirements and increase the predictability of life cycle costs. Research questions: How can railway infrastructure planning phase be improved based on a life cycle long-term perspective? What factors do the Swedish Transport Administration need to take into account during the planning phase to ensure reliable and cost-effective railway infrastructure? How can a working methodology be designed to promote a cost-effective railway facility? Method: The following study is based on a qualitative case study of Swedish Transport Administration. The literature study and the theoretical framework are based on peer-previewed journals, scientific articles and books that covers the areas of the study. The empirical data collection is based on semi-structured interviews and reports from different administrative authority. Conclusion: This study has shown that planning of railway infrastructure from a life cycle perspective can be improved by concrete evidence to support the decisions to be taken. The decisions basis for the railway infrastructure should be based on various analysis in order to evaluate the most cost-effective option while reflecting the desired goals and requirements. However, analysis should not only be based on the technical design. It should also consider operation and maintenance, since they have a major impact on the outcome of capacity, performance and cost throughout the life cycle of the railway infrastructure. Furthermore, the study has demonstrated the importance of having reliable systems that can provide information about the railway infrastructure and all data required for carrying out analysis.
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Weaver, Steven E. "Logistic support for non-developmental Items." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/42112.
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The objectives of this research are: (1) to examine how the decision is made to use a Non-Developmental Item (NDI) to meet an operational requirement; and (2) to formulate an evaluation model that could be used by the decision maker to determine which support method would be most suitable for the NDI in question. In formulating the model presented in this thesis (the Support System Decision Matrix), actual cases of NDI were studied and; the lessons learned from these efforts were consolidated into a model. The heuristic considers system use factors and system specific factors and ranks the four basic ways to support a system: (1) discard system upon failure (no support), (2) total contractor support, (3) organic support and (4) a combination of organic and contractor support. Keywords: Logistic support; Non developmental item; Decision making.
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FONTES, ERICA SOARES. "INTEGRATED LOGISTIC SUPPORT FOR ON-SHORE PIPELINE CONSTRUCTION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26699@1.
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Este trabalho desenvolveu-se no ambiente das obras de dutos terrestres. Por meio de pesquisa bibliográfica, procurou-se adequar as práticas logísticas usadas em operações militares (logística expedicionária) às atividades de construção e montagem de dutos, em função de não existir, atualmente, um processo de planejamento integrado para as atividades logísticas em obras dessa natureza. Inicialmente, serão apresentados atividades, equipamentos, materiais e mão-de-obra utilizada na construção e montagem de dutos. Em seguida, serão discutidos seus problemas e particularidades logísticas, dos quais pode-se destacar o deslocamento permanente de máquinas , equipamentos, veículos pesados, pessoas, alojamentos, alimentos e energia, por locais sem infra-estrutura de acesso; e o abastecimento dos materiais empregados na obra, dos bens de subsistência , medicamentos, mão-de-obra e combustível para os veículos pesados, entre outros, ao longo da faixa de dutos, durante toda a construção. Serão estudadas as características logísticas de uma operação militar, principalmente no que se refere ao transporte e abastecimento, abertura de vias de acesso em matas fechadas, transposição de rios, subsistência das tropas, logística de saúde, deslocamento de equipamentos e de veículos de apoio. Assim, pretende-se propor o uso de algumas práticas da logística expedicionária nas atividades de construção e montagem de dutos terrestres, a fim de se obter uma estrutura mais enxuta e produtiva.This work was developed in the context of an onshore pipeline construction. Through a bibliography research, it looked forward to adapt the logistics practices that are used in military operations (expeditionary logistics) to the activities of the construction and assembly of a pipeline. Nowadays there is no integrated planning process for logistics activities for works of this nature. First of all, the activities, equipments, materials and labor that are used in the pipeline construction will be presented. Next, its problems and logistics peculiarities will be discussed, where some aspects can be stand out like the permanent dislocation of machines, equipments, heavy vehicles, people, accommodation, food and energy, to places without access infrastructure; and the supply of materials used in the construction, subsistence goods, medicine, labor and fuel for the heavy vehicles, across the pipeline way, during all the construction. Logistics characteristics of a military operation will be studied, principally when it talk about transportation and supply, opening access roads in closed forests, river transportation, subsistence of the troops, logistic of health, dislocation of equipment and support vehicles. So, it is intended to propose the use of some logistics expeditionary practices in the activities of construction and assembly of an onshore pipeline, in order to obtain a more productive and leaner structure.
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Moore, Ellen E. Snyder Carolynn M. "The Logistics Management Decision Support System (LMDSS) : an effective tool to reduce life cycle support costs of aviation systems /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA348298.
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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, June 1998.Thesis advisor(s): Donald R. Eaton, William J. Haga. "June 1998." Thesis (M.S. in Management) Naval Postgraduate School, June 1998. Includes bibliographical references (p. 159-162). Also available online.
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Moore, Ellen E., and Carolynn M. Snyder. "The Logistics Management Decision Support System (LMDSS) : an effective tool to reduce life cycle support costs of aviation systems." Thesis, Monterey, California. Naval Postgraduate School, 1998. http://hdl.handle.net/10945/8629.
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This thesis assesses the capability of the Logistics Management Decision Support System (LMDSS) to meet the information needs of Naval Air Systems Command (NAVAIR) logistics managers based on surveys of logistics managers and interviews with LMDSS program representatives. The LMDSS is being introduced as a tool to facilitate action by NAVAIR logistics managers to reduce the life cycle support costs of aviation systems while protecting readiness. We conclude the LMDSS does not meet the definition of a Decision Support System due to the lack of modeling capabilities. The LMDSS architecture and capabilities meet the information needs of surveyed logistics managers and support Affordable Readiness initiatives which are the means by which NAVAIR intends to reduce life cycle costs while sustaining aviation system readiness levels. Lack of modeling, graphics and sensitivity analysis capabilities limits identification, analysis and comparison of Affordable Readiness initiatives. We recommend modeling tools and graphics capabilities be incorporated as part of the LMDSS application. We further recommend that initiatives to improve data validity be expedited and that Maintenance Level 3 detail cost data be provided. Recommendations are made for further research
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Croker, John. "A methodology for the prediction of maintenance and support of fleets of repairable systems." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370016.
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Reasor, Roderick. "A decision support system for integrated design analysis of a repairable item and it's logistic support system." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07102007-142510/.
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Kinkade, James D. "Using automatic identification technologies for logistic support on battlefields of the future /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA308333.
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Moore, Thomas P. "Optimal design, procurement and support of multiple repairable equipment and logistic systems." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/71158.
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A concept for the mathematical modeling of multiple repairable equipment and logistic systems (MREAL systems) is developed; These systems consist of multiple populations of repairable equipment, and their associated design, procurement, maintenance, and supply support. MREAL systems present management and design problems which parallel the·management and design of multiple, consumable item inventory systems. However, the MREAL system is more complex since it has a repair component.
The MREAL system concept is described in a classification hierarchy which attempts to categorize the components of such systems. A specific mathematical model (MREAL1) is developed for a subset of these components. Included in MREAL1 are representations of the equipment reliability and maintainability design problem, the maintenance capacity problem, the retirement age problem, and the population size problem, for each of the multiple populations. MREAL1 models the steady state stochastic behavior of the equipment repair facilities using an approximation which is based upon the finite source, multiple server queuing system. System performance measures included in MREAL1 are: the expected MREAL total system life cycle cost (including a shortage cost penalty); the steady state expected number of shortages; the probability of catastrophic failure in each equipment population; and two budget based measures of effectiveness.
Two optimization methods are described for a test problem developed for MREAL1. The first method computes values of the objective function and the constraints for a specified subset of the solution space. The best feasible solution found is recorded. This method can also examine all possible solutions, or can be used in a manual search. The second optimization method performs an exhaustive enumeration. of the combinatorial programming portion of MREAL1, which represents equipment design. For each enumerated design combination, an attempt is made to find the optimal solution to the remaining nonlinear discrete programming problem. A sequential unconstrained minimization technique is used which is based on an augmented Lagrangian penalty function adapted to the integer nature of MREAL1. The unconstrained minimization is performed by a combination of Rosenbrock's search technique, the steepest descent method, and Fibonacci line searches, adapted to the integer nature of the search. Since the model contains many discrete local minima, the sequential unconstrained minimization is repeated from different starting solutions, based upon a heuristic selection procedure. A gradient projection method provides the termination criteria for each unconstrained minimization.Ph. D.
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King, Edwin T. "Microcircuit Technology in Logistic Applications Radio Frequency (MITLA/RF) : an analysis of radio frequency identification and tracking to support logistic operations /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA297969.
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Fay, TH, and JC Greeff. "A three species competition model as a decision support tool." Elsevier, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000167.
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An overcrowding problem of nyala, and lately also of impala in the Ndumo Game Reserve,
South Africa, has been detrimental to other species and vegetation structures over a period
of two decades. In the present study a deterministic model for three competing species
(where two species tend to be overpopulated while the third faces probable localized extinction)
is constructed, while future trends coupled with their coexistence are projected.
On a mathematical basis, we seek reasons for the failure of the cropping strategies
implemented by management over the last two decades, and suggest alternative,
scientifical-based approaches to the calculation of cropping quotas to ensure the future
coexistence of all three species. A system of three first-order nonlinear differential equations
is used, with parameter values based on field data and opinions of specialist ecologists.
The effect of various cropping strategies, and the introduction of a fourth species (man as a
predator) to the system, is investigated mathematically. This model was implemented as a
harvesting strategy in 2002, and is being continuously tested. Final assessment can only be
done over a 10–15-year period, but so far indications are promising.
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Yamben, Jean-Yves. "Intelligent decision support system for transport infrastructure investment with emphasis on joint logistic." Thesis, Blekinge Tekniska Högskola, Avdelningen för för interaktion och systemdesign, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1306.
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The aim of this thesis is to provide to the governmental decision-maker/user, an instrument that can assist him/her in improving the infrastructure investment decision in the economical, environmental and sustainable aspects. This means that, the Return on Investment (ROI) of the concerned transport infrastructure, satisfying environmental and sustainable constraints must be positive, and corresponding to an optimal investment cost. The decision support system can be applied in two dimensions. One dimension is where the real negotiation process is occurring between private and public stakeholders, called “real time negotiation process”. The second dimension is where the negotiation process is impelled by the user (public part) without private stakeholders interaction (but with interaction through simulation), called “virtual negotiation process”. The simulation and local optimization techniques, in phase with agent technology, used in the “virtual negotiation process” enable us to achieve a certain amount of alternative decisions to the primary/suggested decision to be evaluated. The CommonKADS methodology with mathematical modeling, and agent technology have been the support respectively for extracting and implementing the knowledge in the domain, monitoring, automating and updating the decision process. The principle of “Joint logistic” [1] in my effort concerns by the means of sharing financial and information resources; This leads to the empowerment of the supply chain feedbacks (roles), involved in the earlier stages of public transport decision making-process. It appears that within the decision-making process, the government is often dealing with the conflicting objectives, while interacting with the business stakeholders. For instance, the estimated investment cost of a specific transport infrastructure can exceed the income generated by this infrastructure, thus the ROI of the concerned transport infrastructure (TI) will be negative. From this perspective the government faces three choices: a) increase the rate of the taxes applied on that transport infrastructure or any other taxes, in order to make ROI positive, this can be matter of discussion/disagreement for the business community b) reduce the investment cost which means suggest a different TI with a lower quality standard compared to the previous; this can also be a matter of disagreement between the two concerned stakeholders. c) delay of the investment in the specific transport infrastructure. In fact in the most situations the government uses the first approach, which effects might be consequently unpredictable and disastrous in the economical and environmental sense for the government. From this point of view my attempt is to propose an intelligent decision support system for governments or project groups (e.g. East West project group), involving conceptually as components web portal, database, simulator and knowledge base, that bases on an approach, that enables this negotiation/information exchange at the earlier steps of decision-making situation. This is concretized by gathering in real time accurate and relevant information from the private sector; furthermore the knowledgebase of the designed system is conceived via the experience and historical knowledge of the concerned experts in the domain.Please contact me via email : yjeanyv@hotmail.com or phone: +224 64 97 43 79
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Tzeremes, Vasilios. "End user software product line support for smart spaces." Thesis, George Mason University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10249280.
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Smart spaces are physical environments equipped with pervasive technology that sense and react to human activities and changes in the environment. End User Development (EUD) skills vary significantly among end users who want to design, develop and deploy software applications for their smart spaces. Typical end user development is opportunistic, requirements are usually unplanned and undocumented, applications are simplistic in nature, design is ad-hoc, reuse is limited, and software testing is typically haphazard, leading to many quality issues. On the other hand, technical end users with advanced EUD skills and domain expertise have the ability to create sophisticated software applications for smart spaces that are well designed and tested.
This research presents a systematic approach for adopting reuse in end user development for smart spaces by using Software Product Line (SPL) concepts. End User (EU) SPL Designers (who are technical end users and domain experts) design and develop EU SPLs for smart spaces whereas less technical end users derive their individual smart space applications from these SPLs. Incorporating SPL concepts in EUD for smart spaces makes it easier for novice end users to derive applications for their spaces without having to interface directly with devices, networks, programming logic, etc. End users only have to select and configure the EU SPL features needed for their space. Another benefit of this approach is that it promotes reuse. End user requirements are mapped to product line features that are realized by common, optional, and variant components available in smart spaces. Product line features and the corresponding component product line architecture can then be used to derive EU applications. Derived EU applications can then be deployed to different smart spaces, thereby avoiding end users having to create EU applications from scratch. Finally the proposed approach has the potential of improving software quality since testing will be an integral part of EU SPL process.
In particular, this research has: (a) defined a systematic approach for EU SPL Designers to design and develop EU SPLs, (b) provided an EU SPL application derivation approach to enable end users to derive software applications for their spaces, (c) designed an EU SPL meta-model to capture the underlying representation of EU SPL and derived application artifacts in terms of meta-classes and relationships that supports different EUD platforms, (d) designed and implemented an EUD development environment that supports EU SPL development and application derivation, and (e) provided a testing approach and framework for systematic testing of EU SPLs and derived applications.
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March, David A., and Sean P. Higgins. "Analysis and evaluation of high speed ferries for use as logistic support vessels in support of joint logistics over-the-shore." Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/6056.
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Approved for public release, distribution is unlimitedRecent developments in High Speed Ferry (HSF) technologies, and the successful use of the HMAS Jervis Bay as a Logistic Support Vessel (LSV) by the Royal Australian Navy, introduced the potential for HSFs to serve as LSVs in support of Joint Logistics Over-the-Shore (JLOTS). This thesis analyzes the opportunities available to the Department of Defense (DoD) to utilize HSFs as LSVs in support of JLOTS. In conducting the analysis, this thesis considers the observations and lessons learned from the Australian use of the HMAS Jervis Bay, previous testing of an Incat 91-meter HSF by the Naval Surface Warfare Center Carderock Division, the initiatives of the current Joint Venture (HSV-X1) lease, current JLOTS doctrine, and the principles of Joint Vision 2010 and 2020. Our research concludes that HSFs posses certain advantages over current LSVs in the areas of speed, range, and payload. It is these advantages that give the HSFs the ability to perform both modern day and future JLOTS operations with greater flexibility than current LSVs. We suggest that by using HSFs as LSVs during JLOTS operations, DoD could employ a technically advanced and highly capable platform that could augment or replace current LSVs.
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Ng, Yew Soon. "Optimizing a military supply chain in the presence of random, non-stationary demands." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FNg.pdf.
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Chang, M. "A Monte Carlo study of integrated logistic support trade-off at early system design stage." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597453.
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In this thesis, we propose to use Monte Carlo (MC) simulation to assess maintenance down time (MDT), which cannot be assessed a priori by traditional MIL-STD-471 (or now MIL-HDBK-470), at the early design phase based on various maintainability and provisioning options. Also, by using MC, we can perform a more rigorous in-progress maintainability demonstration during the design reviews. By following the MC approach in the MDT assessment at the early design phase, we can study the cost item related to revenue loss a prior for a commercial system design. This thesis proposes the use of MC simulation to estimate the MDT and thus the downtime-orientated profit loss along with other LCC items at the early design phase. This extends the US military standards to provide an accurate overall picture of a commercial system life cycle aspect for both the manufacturer and the user in performing integrated logistic support design trade-off at the early design phase. In order to stress the importance of this cost item about profit loss and keep the original military LCC structure undisturbed, we append the profit loss to the LCC and make a new economic trade-off factor, the "life cycle revenue loss" (LCRL). This definition of LCRL is stressed from the point of view of the user's life time. With a simple three-module water-level-control system, we demonstrate how to use MC in logistic trade-off problems based on LCC and LCRL at the early design phase. Our research shows that LCRL is more sensitive than LCC in handling a commercial system with profit concerns. We also develop a MC inventory trade-off approach based on LCRL and show that we may use the LCRL to integrate the concerns of the manufacturer and the user.
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Khaitan, Siddhartha Kumar. "On-line cascading event tracking and avoidance decision support tool." [Ames, Iowa : Iowa State University], 2008.
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Salem, Rashed. "Active XML Data Warehouses for Intelligent, On-line Decision Support." Thesis, Lyon 2, 2012. http://www.theses.fr/2012LYO22002.
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Un système d'aide à la décision (SIAD) est un système d'information qui assiste lesdécideurs impliqués dans les processus de décision complexes. Les SIAD modernesont besoin d'exploiter, en plus de données numériques et symboliques, des donnéeshétérogènes (données texte, données multimédia, ...) et provenant de sources diverses(comme le Web). Nous qualifions ces données complexes. Les entrepôts dedonnées forment habituellement le socle des SIAD. Ils permettent d'intégrer des données provenant de diverses sources pour appuyer le processus décisionnel. Cependant, l'avènement de données complexes impose une nouvelle vision de l'entreposagedes données, y compris de l'intégration des données, de leur stockage et de leuranalyse. En outre, les exigences d'aujourd'hui imposent l'intégration des donnéescomplexes presque en temps réel, pour remplacer le processus ETL traditionnel(Extraction, Transformation et chargement). Le traitement en temps réel exige unprocessus ETL plus actif. Les tâches d'intégration doivent réagir d'une façon intelligente, c'est-à-dire d'une façon active et autonome pour s'adapter aux changementsrencontrés dans l'environnement d'intégration des données, notamment au niveaudes sources de données.Dans cette thèse, nous proposons des solutions originales pour l'intégration dedonnées complexes en temps réel, de façon active et autonome. En eet, nous avons conçu une approche générique basé sur des métadonnées, orientée services et orienté évènements pour l'intégration des données complexes. Pour prendre en charge lacomplexité des données, notre approche stocke les données complexes à l'aide d'unformat unie en utilisant une approche base sur les métadonnées et XML. Nous noustraitons également la distribution de données et leur l'interopérabilité en utilisantune approche orientée services. Par ailleurs, pour considérer le temps réel, notreapproche stocke non seulement des données intégrées dans un référentiel unie,mais présente des fonctions d'intégration des données a la volée. Nous appliquonségalement une approche orientée services pour observer les changements de donnéespertinentes en temps réel. En outre, l'idée d'intégration des données complexes defaçon active et autonome, nous proposons une méthode de fouille dans les évènements.Pour cela, nous proposons un algorithme incrémentiel base sur XML pourla fouille des règles d'association a partir d’évènements. Ensuite, nous denissonsdes règles actives a l'aide des données provenant de la fouille d'évènements an deréactiver les tâches d'intégration.Pour valider notre approche d'intégration de données complexes, nous avons développé une plateforme logicielle, à savoir AX-InCoDa ((Active XML-based frameworkfor Integrating Complex Data). AX-InCoDa est une application Web implémenté à l'aide d'outils open source. Elle exploite les standards du Web (comme les services Web et XML) et le XML actif pour traiter la complexité et les exigences temps réel. Pour explorer les évènements stockés dans base d'évènement, nous avons proposons une méthode de fouille d'évènements an d'assurer leur autogestion.AX-InCoDa est enrichi de règles actives L'ecacite d'AX-InCoDa est illustrée par une étude de cas sur des données médicales. En, la performance de notre algorithme de fouille d'évènements est démontrée expérimentalementA decision support system (DSS) is an information system that supports decisionmakers involved in complex decision-making processes. Modern DSSs needto exploit data that are not only numerical or symbolic, but also heterogeneouslystructured (e.g., text and multimedia data) and coming from various sources (e.g,the Web). We term such data complex data. Data warehouses are casually usedas the basis of such DSSs. They help integrate data from a variety of sourcesto support decision-making. However, the advent of complex data imposes anothervision of data warehousing including data integration, data storage and dataanalysis. Moreover, today's requirements impose integrating complex data in nearreal-time rather than with traditional snapshot and batch ETL (Extraction, Transformationand Loading). Real-time and near real-time processing requires a moreactive ETL process. Data integration tasks must react in an intelligent, i.e., activeand autonomous way, to encountered changes in the data integration environment,especially data sources.In this dissertation, we propose novel solutions for complex data integration innear real-time, actively and autonomously. We indeed provide a generic metadatabased,service-oriented and event-driven approach for integrating complex data.To address data complexity issues, our approach stores heterogeneous data into aunied format using a metadata-based approach and XML. We also tackle datadistribution and interoperability using a service-oriented approach. Moreover, toaddress near real-time requirements, our approach stores not only integrated datainto a unied repository, but also functions to integrate data on-the-y. We also apply a service-oriented approach to track relevant data changes in near real-time.Furthermore, the idea of integrating complex data actively and autonomously revolvesaround mining logged events of data integration environment. For this sake,we propose an incremental XML-based algorithm for mining association rules fromlogged events. Then, we de ne active rules upon mined data to reactivate integrationtasks.To validate our approach for managing complex data integration, we develop ahigh-level software framework, namely AX-InCoDa (Active XML-based frameworkfor Integrating Complex Data). AX-InCoDa is implemented as Web application usingopen-source tools. It exploits Web standards (e.g., XML and Web services) andActive XML to handle complexity issues and near real-time requirements. Besidewarehousing logged events into an event repository to be mined for self-managingpurposes, AX-InCoDa is enriched with active rules. AX-InCoDa's feasibility is illustratedby a healthcare case study. Finally, the performance of our incremental eventmining algorithm is experimentally demonstrated
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Jo, Jun Sang. "Integration of Computer-Aided Acquisition & Logistic Support (CALS) components into the ROK Army information infrastructure /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306255.
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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, September 1995.Thesis advisor(s): M. Suh, Keebom Kang. "September 1995." Includes bibliographical references. Also available online.
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Sang, Jo. "Integration of Computer-Aided Acquisition & Logistic Support (CALS) components into the ROK Army information infrastructure." Thesis, Monterey, California. Naval Postgraduate School, 1995. http://hdl.handle.net/10945/35148.
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The goal of the CALS initiative is to enable integration of enterprises on a worldwide basis. The vision is for all or parts of a single enterprise, or for example, an original equipment manufacturer and its suppliers, or a consortium of public and private groups and academia, to be able to work from a common digital database, in real time, on the design, development, manufacturing, distribution and servicing of products. The direct benefits would come through substantial reductions in product-to-market time and costs, along with significant enhancements in quality and performance. Having described the Continuous Acquisition and Life-cycle Support (CAL S) information management system (IMS) employed by the United States military to maintain and distribute technical support documents for weapons and materials, this thesis proposes an overall strategy for integrating the information management concepts of CALS into the infrastructure of the Army of the Republic of Korea (ROK)
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Sousa, André Luís Sequeira de. "Traceability support in software product lines." Master's thesis, FCT - UNL, 2008. http://hdl.handle.net/10362/1798.
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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia Informática.Traceability is becoming a necessary quality of any modern software system. The complexity in modern systems is such that, if we cannot rely on good techniques and tools it becomes an unsustainable burden, where software artifacts can hardly be linked to their initial requirements. Modern software systems are composed by a many artifacts (models, code, etc.). Any change in one of them may have repercussions on many components. The assessment of this impact usually comes at a high cost and is highly error-prone. This complexity inherent to software development increases when it comes to Software Product Line Engineering. Traceability aims to respond to this challenge, by linking all the software artifacts that are used, in order to reason about how they influence each others. We propose to specify, design and implement an extensible Traceability Framework that will allow developers to provide traceability for a product line, or the possibility to extend it for other development scenarios. This MSc thesis work is to develop an extensible framework, using Model-Driven techniques and technologies, to provide traceability support for product lines. We also wish to provide basic and advanced traceability queries, and traceability views designed for the needs of each user.
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Maples, Henrietta Hall. "Contractors on the battlefield : a case study of the Airborne Reconnaissance Low (ARL) Life-cycle Logistics Support Contract - March 2000 through August 2001." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA401505.
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Thesis (M.S. in Program Management) Naval Postgraduate School, Dec. 2001.Thesis advisors: David F. Matthews, Nelson T. Martin. "December 2001." Includes bibliographical references (p. 47-49). Also available in print.
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NUNES, GUILHERME SILVA. "APPLICATION OF THE AHP METHOD FOR DECISION MAKING IN CHOOSING THE LOCATION FOR OFFSHORE LOGISTIC SUPPORT OPERATION FACILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34620@1.
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Atualmente o petróleo é o principal energético mundial. No Brasil, a predominância produtiva dos campos offshore evidencia a importância das bases de apoio logístico em sua cadeia de valor, o elo entre as instalações marítimas e seus provedores em terra. Diante da intensidade de capital e dos vultosos custos de uma campanha exploratória, a localização destes terminais assume caráter estratégico no sucesso da campanha. Além de apresentar os aspectos mais importantes do contexto, este trabalho visa apresentar um estudo para instalação de base de operação de apoio logístico offshore nas campanhas do Campo de Carcará na Bacia de Santos. Através da construção de uma modelagem AHP em novo formato simplificado, foi possível sugerir um ranking de terminais portuários quanto à sua vocação para provimento de serviço de apoio logístico offshore. O AHP após o desenvolvimento da forma simplificada, se torna ainda mais um poderoso ferramental para determinar a decisão correta, mesmo frente às inúmeras variáveis, minimizando a possibilidade de combinações inconsistentes e erros de julgamento, ajudando e embasando as organizações e pessoas na tomada de decisões colaborativas de forma rápida e acurada.Today, oil is the world s leading energy source. In Brazil, the productive dominance of the offshore fields shows the importance of the logistical support bases in chain value, the link between the maritime facilities and their onshore suppliers. Faced with the capital intensity and the high costs of an exploratory campaign, the location of these terminals is strategic for the success of the campaign. In addition to presenting the most important aspects of the context, this work aims to present a study for the base installation of offshore logistic support operation in the Carcará Field campaigns in Santos Basin. Through the construction of an AHP model in a new simplified format, it was possible to suggest a ranking of port terminals regarding their vocation to provide offshore logistics support service. The AHP after the development of the simplified form, becomes even more a powerful tool to determine the correct decision, even in front of the numerous variables, minimizing the possibility of inconsistent combinations and errors of judgment, helping and supporting the organizations and people in the decision making collaborative projects quickly and accurately.
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Al-Khaldi, Omar Obied. "The integrated logistics support enhancement of reliability, availability and maintenability in the Jordanian Army." Thesis, Bucks New University, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.714468.
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Ibrahim, Fady. "Modelling a Manufacturing line : Analysis and Decision support based on Discrete Event Simulation." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-13057.
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The increasing competition between the companies forces them to develop the production in a continuous manner in order to maintain the competitiveness in the global market, and became as efficient and effective as possible. This master thesis is conducted at Getrag All Wheel Drive Company which is one of the largest suppliers for transmissions and powertrain systems .This Company has worked actively for long time to improve the production flow at the manufacturing departments by using usual methods. Because of the high complex and intersected flow that the company has, the management intended to adopt another approach that takes dynamic information into consideration, therefore, building a simulation model is the solution, where according to Banks et al (2001) the simulation is a duplication of a real-world process or system and its behaviour as it progress during the time, which is a very useful method to evaluate complex systems, instead of using usual mathematical means used tools. The simulation model created by using Banks et al (2001) simulation methodology, and ExtendSim software help. The resulted model used as a tool that provides great assistance to the decision makers, in order to develop the Conwip system which applied in the manufacturing line under study, and to investigate “What if” scenarios. The result of this study obtained after performing two experiments, where the first experiment gives recommendation regarding the optimal upper bound of the total amount of work that can be used in Conwip system, with the use of sensitivity analysis, and the second experiment analyse the overall all effect on the system after separating the paths of high and low volume products. This project proves the powerful side of using the simulation in situations where it’s too hard or even impossible to improve the performance of a manufacturing line i.e. when large number of variables involved and affecting the system.
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Atkin, Jason Adam David. "On-line decision support for take-off runway scheduling at London Heathrow Airport." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/12474/.
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The research problem considered in this thesis was presented by NATS, who are responsible for the take-off runway scheduling at London Heathrow airport. The sequence in which aircraft take off is very important and can have a huge effect upon the throughput of the runway and the consequent delay for aircraft awaiting take-off. Sequence-dependent separations apply between aircraft at take-off, some aircraft have time-slots within which they must take-off and all re-sequencing performed by the runway controller has to take place within restrictive areas of the airport surface called holding areas. Despite the complexity of the task and the short decision time available, take-off sequencing is performed manually by runway controllers. In such a rapidly changing environment, with much communication and observation demanded of the busy controller, it is hardly surprising that sub-optimal mental heuristics are currently used. The task presented by NATS was to develop the decision-making algorithms for a decision support tool to aid a runway controller to solve this complex real-world problem. A design for such a system is presented in this thesis. Although the decision support system presents only a take-off sequence to controllers, it is vitally important that the movement within the holding area that is required in order to achieve the re-sequencing is both easy to identify and acceptable to controllers. A key objective of the selected design is to ensure that this will always be the case. Both regulatory information and details of controller working methods and preferences were utilised to ensure that the presented sequences will not only be achievable but will also be acceptable to controllers. A simulation was developed to test the system and permit an evaluation of the potential benefits. Experiments showed that the decision support system found take-off sequences which significantly reduced the delay compared with those that the runway controllers actually used. These sequences had an equity of delay comparable with that in the sequences the controllers generated, and were achieved in a very similar way. Much of the benefit that was gained was a result of the decision support system having visibility of the taxiing aircraft in addition to those already queueing for the runway. The effects of uncertainty in taxi times and differing planning horizons are explicitly considered in this thesis. The limited decision time available ensures that it is not practical for a runway controller to consider as many aircraft as the decision support algorithms can. The results presented in this thesis indicate that huge benefits may be possible from the development of a system to simplify the sequencing task for the controllers while simultaneously giving them greater visibility of taxiing aircraft. Even beyond these benefits, however, the system described here will also be seen to have further potential benefits, such as for evaluating the effects of constraints upon the departure system or the flexibility of holding area structures.
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Wieczorek, Italo de Avila. "A power line detection algorithm to support a fine grain UAV movement guidance." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/163770.
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Detecção de linhas de alta tensão em ambientes complexos é uma das tarefas mais desafiadoras em inspeções que utilizam Veículos Aéreos Não Tripulados (VANTs). Este trabalho foca em dar uma solução para este desafio, através do desenvolvimento de um algoritmo de controle de voo de precisão, que guie o VANT de maneira autônoma sobre as linhas de alta tensão. O algoritmo proposto é baseado em quatro etapas: Captura da Imagem, Filtragem da Imagem, Detecção das Linhas e Controle de Voo. Inicialmente a imagem é redimensionada para um tamanho em que as linhas fiquem em maior evidência, depois uma sequência de filtros é aplicada na imagem para reduzir ruído e evidenciar ainda mais as linhas. Depois deste pré-tratamento, um filtro de duas dimensões com formato similar ao de uma linha de alta tensão é usado para extrair os pixels pertencentes as bordas destas linhas. Após a aplicação do filtro de duas dimensões, a Transformada de Hough é aplicada na imagem resultante para detectar os segmentos de reta. Por fim, todos os dados obtidos no processamento da imagem são utilizados para guiar o VANT de maneira autônoma pelas linhas de transmissão. O algoritmo proposto apresenta um eficiente sistema de detecção de linhas de alta tensão, para auxiliar o controle de voo autônomo de um VANT, apresentando resultados convincentes.Power lines detection in complex environments is one of the most important and challenging tasks in Unmanned Aerial Vehicles (UAV)-based inspections. This work focuses on tackling this challenge by developing a control algorithm to support fine grain UAV control to autonomously guide the aerial platform over the power lines. The proposed algorithm is based on four stages: Image Capturing, Image Filtering, Line Detection and Flight Control. Firstly, the image is cropped to a size that fits all the power lines, then a sequence of filters is applied in the image to reduce noise and highlight these lines. After all the image's pretreatment, a 2D filter with similar shape of a power transmission line is used to extract pixels that belongs to the line's edges. Then, the Hough Transform method detects the line segments in the edges result image. Lastly all the obtained data is used to autonomously guide a UAV over the power transmission lines. The proposed algorithm presents an efficient power transmission lines detecting system to support the autonomous UAV guidance, which presents convincing results.
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Miller, Russell F. "An evaluation of the prime vendor support approach to U.S. Army weapon system sustainment." Thesis, View thesis, 1999. https://dspace.mit.edu/handle/1721.1/9802.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 1999.Title from title screen (viewed Jan. 4, 2006). "June 1999." Includes bibliographical references (p. 101). Also issued in paper format.
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Venkrbcová, Eva. "On-line služby v nemocnicích." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-205400.
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The thesis is focused on mapping of selected on-line services in hospitals in Czech Re-public according to their availability. In the next step logistic regression model will be used, which will measure a range of particular on-line services according to their legal form, majority ownership, region in which health organization is located, to education achieved and gender of hospital director and lastly in accordance with the size of hospital from the viewpoint of bed capacity. This thesis will provide comprehensive overview of availability of on-line services in Czech hospitals and determine which factors significantly decreasing or increasing chance of their occurrence on hospital websites.
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Stuntebeck, Erich Peter. "An analysis of the domestic power line infrastructure to support indoor real-time localization." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34678.
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The vision of ubiquitous computing is to seamlessly integrate information processing into everyday objects and activities. Part of this integration is an awareness on the part of a system of its user's context. Context can be composed of several variables --- such as a user's current activity, goals, or state of mind --- but location (both past and present) is almost always a key component.
Determining location outdoors has become quite simple and pervasive with today's low-cost handheld Global Positioning System (GPS) receivers. Technologies enabling the location of people and objects to be determined while indoors, however, have lagged due to their extensive infrastructure requirements and associated cost. Just as GPS receivers utilize radio signals from satellites to triangulate their position, an indoor real-time locating system (RTLS) must also make use of some feature of the environment to determine the location of mobile units. Since the signal from GPS satellites is not sufficiently strong to penetrate the structure of a building, indoor RTLS systems must either use some existing feature of the environment or generate a new one. This typically requires a large amount of infrastructure (e.g. specialized RF receivers, additional 802.11 access points, RFID readers, etc.) to be deployed, making indoor RTLSs impractical for the home. While numerous techniques have been proposed for locating people and objects within a building, none of these has yet proven to be a viable option in terms of cost, complexity of installation, and accuracy for home users.
This dissertation builds on work by Patel et al. in which the home power lines are used to radiate a low-frequency wireless RF signal that mobile tags use for location fingerprinting. Leveraging the existing power line permits this system to operate on far less additional infrastructure than existing solutions such as cellular (GSM and CDMA), 802.11b/g, and FM radio based systems.
The contributions of this research to indoor power line-based RTLS are threefold. First, I examine the temporal stability of a power line based RTLS system's output. Fingerprinting-based RTLS relies upon some feature of the environment, such as the amplitude of an RF signal, to be stable over time at a particular location (temporal stability), but to change in space (spatial differentiability). I show that a power line-based RTLS can be made much more resistant to temporal instability in individual fingerprint components by utilizing a wide-band RF fingerprint. Next, I directly compare the temporal stability of the raw features used by various fingerprinting based indoor RTLSs, such as cellular, 802.11b/g, and FM radio. In doing so, I show that a power line based indoor RTLS has an inherent advantage in temporal stability over these other methods. Finally, I characterize the power line as a receiving antenna for low-powered wireless devices within the home, thus allowing the power line to not only transmit the RF signals used for fingerprinting, but also to receive the sensed features reported by location tags. Here, I show that the powerline is a viable receiver for these devices and that the globally available 27.12 MHz ISM band is a good choice of frequency for communications.
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Lele, Avinash Shreedhar. "Convex set reconstruction from support line measurements and its application to laser radar data." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/14252.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.Includes bibliographical references (leaves 156-158).
by Avinash Shreedhar Lele.
M.S.
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Luttkus, Jessica (Jessica D. ). "Development of a nanomanufacturing line to support dip-pen nanolithography on a massive scale." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45381.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.Includes bibliographical references (p. 29).
A manufacturing line to support dip pen nanolithography on a massive scale is justified and described. Appropriate machines are evaluated based on key parameters such as cost, rate, and resolution. Methods for comparing lines are discussed, and solutions for lowest cost and fastest lines are provided.
by Jessica Luttkus.
S.B.
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Harper, Brian Davidson. "CAD methods to support automated De- and remanufacture assessments." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16741.
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Lindgren, Victor, and Maria Jansson. "Inventory Control in the Military Aviation Industry : A logistic study of repairable spare parts at Saab Support and Services in Linköping." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-120908.
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Service and spare part logistics has experienced an increased interest throughout the last decade, as it comprises a large share of companies’ turnover and companies have realized the strategic value of having effective after-sales. Saab AB provides the Swedish Armed Forces with service and maintenance of twenty helicopters mainly based at Malmen air base, Linköping. To provide great service, spare parts need to be kept in stock. Numerous spare parts are expensive, desirably kept on a low inventory level and sent to repair shops throughout the world when broken. These spare parts are identified as repairables and together with an irregular and low demand, inventory control of these spare parts is difficult. This has led to the purpose of this thesis: “Develop a method for determination of repairable inventory levels with regards to costs and helicopter availability, and suggest suitable repairable inventory levels for Saab Support Solutions Malmen.” Relevant theoretical theories within this field was identified as among others; Delivery service, Inventory control of spare parts, Forecasting spare parts, Inventory control of repairables and Cannibalization, the act of robbing components between helicopters. The existing theories, especially regarding inventory control of repairables shows the difficulties with applying existing inventory control models for businesses within the same field but with different prerequisites. Relevant parameters affecting repairables inventory levels within Saab’s business was then identified based on the inventory control theories. The study was limited to investigate 19 repairables, since this simplified the extent of the study by limiting the range but still provided a sufficient foundation to base conclusions on. The repairables were chosen because they fulfilled one or several of the conditions to; be very expensive, have long lead times or have experienced many stock outs. The study was divided into three parts for further investigation; what helicopter availability is, how factors except repairables affect helicopter availability and how repairables affect availability and costs. These areas formed main questions, a basis for mapping and analysis questions formed in order to find a way to fulfill the study’s purpose. In order to achieve credibility, the study’s execution was continuously documented. Information needed to answer the mapping and analysis questions was gathered mainly through interviews with key personnel at Saab and the Swedish Armed Forces and through IT-systems used by the two parties. Some facts proved to be easily accessed and highly valuable to the study, while other information was unavailable. During the study, it was identified that Saab and Försvaret’s view on helicopter availability differ in several aspects. They do not fully agree on when a helicopter is available, or who is responsible when a helicopter is unavailable. Both stakeholders may benefit from a closer relation and a common view on helicopter availability. Saab should control their repairable inventory to cover for 3000 yearly helicopter flight hours used by Försvaret, but be prepared to cover for approximately 4000 yearly flight hours. This study further concluded that helicopter availability is only slightly affected by factors other than repairables. Expendable spare parts are usually kept in stock due to their relative low costs and therefore only slightly affect the availability. Overhaul needed on the helicopters do affect the availability, but is hard to improve and will have the same impact almost regardless of used flight hours. The largest improvements can be done by improving repairables inventory levels, to a point when inventory stockouts do not occur and cannibalizations is unnecessary.viThis is however a tradeoff between cost and repairable availability and has to be discussed between Försvaret and Saab, as well as the acceptable level of cannibalization. This study concluded that it is impossible to calculate optimal repairable inventory levels given the conditions in this study. Repairable inventory levels can however be estimated, and procedures how Saab as well as similar businesses can proceed is presented. The study however presents how to estimate suitable inventory levels for operations similar to the studied business of Saab Support Solutions Malmen. The negative impacts of cannibalization are impossible to anticipate, and both Försvaret and Saab stated that zero cannibalizations are preferable. This study further concluded that the costs of keeping inventory to cover for repairable fail variations and prevent all cannibalizations would need to be unreasonable high. Therefore, repairables inventory levels was suggested for four different scenarios. The scenarios was combinations of 3000 and 4000 yearly flight hours used by Försvaret, together with almost zero cannibalizations and an ABC-classification of repairables that allows cannibalizations comparable to today’s levels. The final responsibility to agree upon appropriate repairable inventory levels is incumbent Saab and Försvaret.
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Neeb, Michael S. "The performance of LOGCAP in Operations Enduring and Iraqi Freedom." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FNeeb.pdf.
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Skjelnes, Roy Mikael. "On Hilbert schemes parameterizing points on the affine line having support in a fixed subset." Doctoral thesis, KTH, Matematik, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2935.
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Gallivan, Kathleen C. "Do on-line courses support certification needs for West Virginia K-12 teachers of Spanish?" Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5038.
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Thesis (Ed. D.)--West Virginia University, 2007.Title from document title page. Document formatted into pages; contains x, 133 p. : map. Includes abstract. Includes bibliographical references (p. 93-100).
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Abdelmageed, Mohamed Elnourani, and Filip Skärin. "Developing a line balancing tool for reconfigurable manufacturing systems : A tool to support investment decisions." Thesis, Jönköping University, JTH, Produktionsutveckling, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-52434.
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Purpose - This thesis aims to developing a decision-making tool which fits in a reconfigurable manufacturing system (RMS) milieu used to identify whether to introduce and produce a new product into an already existing assembly line or to invest in a new assembly line. To fulfil the purpose, four research questions were developed. Which line balancing problem-solving techniques exist in the literature? Which investment costs can be considered vital for new assembly lines as a consequence from new product introductions? Can a decision-making tool be designed to evaluate new product introductions which considers both line balancing KPIs and investment costs in an assembly line? To what extent can criteria in the RMS theory be linked with the attributes of the designed decision-making tool to support its applicability? Method - Literature studies were performed in order to create a theoretical foundation for the thesis to stand upon, hence enabling the possibility to answer the research questions. The literature studies were structured to focus on selected topics, including reconfigurable manufacturing systems, line balancing, and assembly line investment costs. To answer the third research question, which involved creating a decision-making tool, a single-case study was carried out. The company chosen was within the automotive industry. Data was collected through interviews, document studies and a focus group. Findings & analysis - An investigation regarding which line balancing solving-techniques suit RMS and which assembly line investment costs are critical when introducing new products has been made. The outputs from these investigations set the foundation for developing a decision-making tool which enables fact-based decisions. To test the decision-making tool’s compatibility with reconfigurable manufacturing systems, an evaluation against established characteristics was performed. The evaluation identified two reconfigurable manufacturing system characteristic as having a direct correlation to the decision-making tool. These characteristics regarded scalability and convertibility. Conclusions - The industrial contribution of the thesis was a decision-making tool that enables fact-based decisions regarding whether to introduce a new product into an already existing assembly line or invest in a new assembly line. The academic contribution involved that the procedure for evaluating the tool was recognized as also being suitable for testing the reconfigurable correlation with other production development tools. Another contribution regards bridging the knowledge gaps of the classifications in line balancing-solving techniques and assembly line investment costs. Delimitations - One of the delimitations in the thesis involved solely focusing on developing and analysing a decision-making tool from an RMS perspective. Hence, other production systems were not in focus. Also, the thesis only covered the development of a decision-making tool for straight assembly lines, not U-shaped lines.
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Martin, Glen. "Methodological development to support clinical prediction modelling within local populations : applications in transcatheter aortic valve implantation and an analysis of the British Cardiovascular Interventional Society national registry." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/methodological-development-to-support-clinical-prediction-modelling-within-local-populations-applications-in-transcatheter-aortic-valve-implantation-and-an-analysis-of-the-british-cardiovascular-interventional-society-national-registry(22691de9-ebb8-4d2a-a942-b3e46dbe9577).html.
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There is growing interest in using large-scale observational data collected through national disease registries to develop clinical prediction models (CPMs) that use the experiences of past patients to make predictions about risks of outcome in future patients. CPMs are often developed in isolation across different populations, with repetitive de novo development a common modelling strategy. However, this fails to utilise all available information and does not respond to changes in health processes through time/space. Using the UK transcatheter aortic valve implantation (TAVI) registry as motivation, this thesis aimed to develop methods that improve the development of CPMs within local populations. Three research questions (RQs) were considered: (1) what are the challenges of mortality risk prediction in TAVI due to changes in procedure knowledge and the patient population? (2) Can we use a combination of baseline patient characteristics to predict the risk of mortality post TAVI? (3) How can we exploit multi-dimensional information about patients to inform clinical decision-making at a local-level? Chapter 2 demonstrates potential to simplify the procedure by removing pre-dilation of the aortic valve, thereby altering the underlying treatment pathway, and Chapter 3 shows that mortality rates from registries should be reported in the context of the underlying patient population. Despite Chapter 2 and 3 presenting potential challenges to TAVI risk prediction (RQ 1), CPMs are fundamental to support benchmarking/audit analyses. To this end, Chapter 4 found that the performance of existing TAVI CPMs was inadequate for use in UK patients. Through the discovery of new risk factors (e.g. frailty) in Chapter 5, the thesis derived a UK-TAVI CPM for audit analyses within the UK cohort (Chapter 6). While Chapters 4-6 present the classic framework of CPM development (RQ 2), this cannot overcome the challenges of mortality prediction in the TAVI setting (RQ 1) and is not suited to support local healthcare decision-making (RQ 3). Thus, Chapter 7 found that local model development could be supported through aggregating existing models rather than re-development. Existing methods of model aggregation were extended in Chapter 8 to allow prior research and new data to be utilised within the modelling strategy; application of the herein derived method to the UK TAVI registry indicated that it could facilitate the choice between model aggregation and de novo CPM derivation. Generally, this thesis has the potential to improve the implementation of CPMs within local populations by moving away from the iterative process of re-development. Practically, the thesis derived a UK-TAVI CPM for audit analyses, using classic and novel methodology.
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Cummins, Lane, and Tony Wilborn. "Cost-benefit analysis of the Department of the Navy's transition from C-9 Aircraft to C-40 Aircraft for logistic support aircraft." Monterey, California: Naval Postgraduate School, 2009. http://hdl.handle.net/10945/10395.
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Approved for public release, distribution unlimitedMBA Professional Report
The Navy began transitioning from the aging C-9s, which peaked at a total fleet size of 27 C-9B/DC-9 aircraft, to the C-40A. However, in response to increasing defense budget scrutiny and competing priorities, the Navy has decided to put this program on hold. Although the C-9B is an aging airframe and will require mandatory Federal Aviation Administration mandated modifications and upgrades, the DC-9/C-9B airframe has recently been determined to have significant operational service life remaining. This project provides a Cost-benefit Analysis (CBA) of the changes associated with replacing the C-9B aircraft with the C-40A. We analyze three alternatives. The first assumes that the C-40A acquisition program will remain on-hold indefinitely. The second alternative foresees the C-40A acquisition resuming as currently projected in FY2015. The third alternative involves the original C-40A acquisition program as per Naval Air Plan 2030 (NAP 2030). The objective is to compare the three alternatives, choosing the alternative, which provides the greatest net benefit and most efficient use of resources. The analysis will involve data collection of operational costs per flight hour, and total costs over the life of the program. Our cost-benefit analysis is intended to indicate the best course of action to provide continued execution of the Navy's Unique Fleet Essential Aircraft (NUFEA) mission. We intend to document all costs incurred and potential savings from a transition to the C-40 aircraft. We find that Alternative Three has lower discounted costs, as well as lower risk and better capabilities, and therefore recommend the Navy transition back to the original C-40 program as soon as practical.
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Cummins, Lane Wilborn Tony. "Cost-benefit analysis of the Department of the Navy's transition from C-9 Aircraft to C-40 Aircraft for logistic support aircraft." Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/MBAPR/2009/Dec/09Dec%5FCummins%5FMBA.pdf.
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"Submitted in partial fulfillment of the requirements for the degree of Master of Business Administration from the Naval Postgraduate School, December 2009."Advisor(s): Franck, Raymond E. ; Hildebrandt, Gregory. "December 2009." "MBA Professional report"--Cover. Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: Cost-benefit Analysis, C-9B Skytrain, C-40A Clipper, NUFEA, Fleet Logistic Support Wing, Acquisition. Includes bibliographical references (p. 85-86). Also available in print.
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Artita, Kimberly. "Computer-based decision-support methods for hydrological ecosystem services management." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/dissertations/530.
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Changing climates, human population growth, and aging infrastructure threaten the availability and quality of one of life's most vital resources, water. Hydrological ecosystem services are goods and benefits derived from freshwater that include flood damage mitigation, water for agricultural and commercial use, swimmable and navigable waters, and healthy aquatic habitats. Using computer algorithms inspired by biological and ecological processes known as evolutionary algorithms and on-site stormwater management practices such structural best management practices (BMPs) and green stormwater infrastructure (GSI), this research aims to maximize hydrological ecosystem services at the watershed-scale in both agricultural and urban environments by integrating these algorithms with the watershed model Soil and Water Assessment Tool (SWAT), and the hydraulic model Storm Water Management Model (SWMM). This dissertation first develops an information theoretic approach to global sensitivity analysis for distributed models, demonstrated using SWAT, and later uses the sensitive model parameters in a multi-objective automatic calibration scheme using multi-objective particle swarm optimization (MOPSO). Multiple alternative watershed-scale BMP designs (parallel terraces, detention/infiltration ponds, field borders, and grade stabilization structures) that help minimize peak runoff and annual sediment yield were simultaneously identified using SWAT coupled with the species conserving genetic algorithm (SCGA). Finally, using recently developed economic estimates called triple bottom line (TBL) accounting, watershed-scale GSI designs are identified that reduce combined sewer overflow volumes in an urban setting while maximizing the net benefit across social, economic, and environmental categories. Overall, this dissertation research provides useful and relevant computer-based tools for water resources planners and managers interested in maximizing hydrological ecosystem services benefits.
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Ciganovic, Renato. "Supportability Engineering in Wind Power Systems - Who Cares? : Considering important stakeholders and their requirements." Licentiate thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-14087.
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Wind power is one of the fastest growing energy sources, which have advantages in terms of delivering clean, cheap and fast energy. Many actors and organizations have realized this potential, which has lead to exponential growth of the wind power over recent couple of years. Despite promising future of clean and green energy through wind there are still areas to be improved to tackle main hinders for further development on a larger scale. The larger scale development of wind power has up-to-date been reached in only few countries such asDenmarkandGermany. The most potential can be found through offshore wind turbines due to, among other, lesser height and noise restrictions than inland wind turbines as well as better wind resources. This thesis is mainly characterized by the mixed-method method, which is in its turn characterized by mixing different research methods such as induction, deduction and abduction as they might be suitable to apply during the different stages of the research process. In this thesis the system approach will be considered to model the scope of this study’s context. As this thesis was constructed as a theoretical study the systematic literature review was used as the main source for data collection. The synthesis of the reviewed articles was initially performed in a broad manner to show overall picture of research related to the scope of this thesis. In the following step, the adopted LCM tool was used to extract study specific data from the reviewed and additional articles. This enabled to link some of the current problems, in wind power area, and ‘unfulfilled’ stakeholder requirements. This thesis aim was to identify important stakeholders and to address their respective requirements within the scope of supportability engineering applied in the wind power context, particularly stakeholder requirements that have not been considered by previous research. The purpose of it was to compare different requirements with current issues in the wind power sector. Conducted systematic literature review showed significant and costly (development) issues related to the supportability engineering such as reliability, availability, maintainability, accessibility problems etc. This was fully in line with the stakeholders’ requirements, which in several cases demanded higher dependability i.e. availability performance and its influencing factors. The thesis also included definition of supportability engineering framework, through comparing several widely accepted and standardized theoretical concepts. This comparison enabled definition of more focused approach with requirements on the ‘supported system’ and to lesser extent the ‘support system’. These requirements are usually mixed within the different theoretical concepts. The main findings from this study are that application of supportability engineering framework would lead to earlier identification of important stakeholders and their requirements. Considering these requirements, for instance availability and maintainability of the wind turbines, at earlier stages of the life cycle through better design and improved supportability infrastructure could potentially decrease amount of current problems in the wind energy sector in particular for the offshore part. Another result was that different stakeholders and their requirements were identified. Thesis contribution overall was a new ‘refined approach’ to deal with supportability issues through supportability engineering framework, whose main focus is the ‘supported system’.
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Pretorius, Petrus Johannes. "A generic approach to integrated logistic support for whole-life whole-systems." Diss., 2003. http://upetd.up.ac.za/thesis/available/etd-09042003-144215.
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ko, chiu-lien, and 柯秋戀. "The Study on the Relationships Among Life Stress, Social Support, and Physical/ Mental Health for the Military Professionals.–Taking Airmen in Logistic Unit of the Sourth Air Wing as the Researching." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/hsqve3.
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碩士國立高雄師範大學
教育學系
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This study was to explore the relationships among the life stress, social support, and physical/ mental health of the military professionals. The research method was questionnaire survey. The study utilized the following instruments:“Individual Basic Data”,“Life Stress scale”,“Social support scale”,and“physical/ mental health scale”.Five hundred and sixteen surveys were sellected from all available returns. All of the surveys were done by the voluntary airmen who work in logistic unit of the Sourth Air Wing. The data were then analyzed by the following statistical methods.Including descriptive statistics,t-test,one-way ANOVA,person Product-Moment Correlation,and Stepwise Multiple Regression. The results were as follows： 1.The life stress of the military professionals was found to be close to intermediate level;“environmental stress” was rated as the highest level; whereas “family stress” was rated the lowest one. 2.The level of social support that the military professionals receive was above “intermediate level.” The“family support” were rated as the highest and the “friend or peer support” were rated as the lowest one. 3.The level of the military professionals physical/ mental health was in a positive condition and above the average level. The“anxiety response” was rated as the highest and the “interpersonal relationships” was rated as the lowest. 4.As to the professional soldiers’awareness of the life stress ,all have significant discrepancy existed in different background variables. 5.As to the professional soldiers’perception of social support and physical and mental health,a significant discrepancy existed in a lot of different background variables. 6.Life stress of the military professionals was positive correlated with physical/ mental health. 7.The social support that the military professionals received was low nagtive correlation with their physical/ mental health. 8.The military professionals’ life stress was nagative correlation with social support that they recieved. 9.The physical and mental health of professional soldiers could be predicted by life stress and social support,with the highest score falling on “personal stress”. Based on the conclusion,this study might provide suggestions for the future study of national defense units and the military professionals.