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Danylenko, Antonina. "Decisions : Algebra and Implementation." Licentiate thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-16283.
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Processing decision information is a constitutive part in a number of applicationsin Computer Science fields. In general, decision information can be used to deduce the relationship between a certain context and a certain decision. Decision information is represented by a decision model that captures this information. Frequently used examples of decision models are decision tables and decision trees. The choice of an appropriate decision model has an impact on application performance in terms of memory consumption and execution time. High memory expenses can possibly occur due to redundancy in a decision model; and high execution time is often a consequence of an unsuitable decision model. Applications in different domains try to overcome these problems by introducing new data structures or algorithms for implementing decision models. These solutions are usually domain-specificand hard to transfer from one domain to another. Different application domains of Computer Science often process decision information in a similar way and, hence, have similar problems. We should thus be able to present a unifying approach that can be applicable in all application domains for capturing and manipulating decision information. Therefore, the goal of this thesis is (i) to suggest a general structure(Decision Algebra) which provides a common theoretical framework that captures decision information and defines operations (signatures) for storing, accessing, merging, approximating, and manipulating such information along with some general algebraic laws regardless of the used implementation. Our Decision Algebra allows defining different construction strategiesfor decision models and data structures that capture decision information as implementation variants, and it simplifies experimental comparisons between them. Additionally, this thesis presents (ii) an implementation of Decision Algebra capturing the information in a non-redundant way and performing the operations efficiently. In fact, we show that existing decision models that originated in the field of Data Mining and Machine Learning and variants thereof as exploited in special algorithms can be understood as alternative implementation variants of the Decision Algebra by varying the implementations of the Decision Algebra operations. Hence, this work (iii) will contribute to a classification of existing technology for processing decision information in different application domains of Computer Science.A thesis for the Degree of Licentiate of Philosophy in Computer Science.
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Schlumberger, Charles. "The implementation of the Yamoussoukro decision." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40822.
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This thesis examines progress made in liberalizing the economic regulation of air transport services in Africa through evaluating advancements made in the implementation of the Yamoussoukro Decision, and the effects observed in the sector. Despite the fact that the Yamoussoukro Decision was reached ten years ago, very little is known about the progress achieved by its implementation in various regions of Africa. While it is generally acknowledged that the formal application of the principles of the Decision to liberalize air services remains incomplete, the thesis outlines and establishes developments in various African markets that point toward a disconnection between the policy and legal framework and the operational realities of the sector. This disconnection, driven mainly by the governments of a small number of African countries who aim at protecting their weak or failing national carriers by refusing to liberalize their air transport markets irrespective of the obligations they have assumed under the Decision, has hindered full liberalization of the African air transport sector and effectively prevented African nations from taking full advantage of the positive economic impacts of air transportation. This thesis reviews these economic aspects, as well as the potential economic impact of full liberalization of African air transport. This thesis demonstrates that, although at the operational level significant progress has been achieved in the liberalization of air services through the signing of numerous bilateral agreements, policy implementation remains incomplete or stagnant in many regions of the continent, thereby hindering the full deployment of the economic potential of Africa. The purpose of this research is to recommend a set of policy measures for African governments in order to move towards full application of the Yamoussoukro Decision to liberalize air services.La présente thèse traite des progrès de la libéralisation des services de transport aérien en Afrique. Elle s’appuie pour cela sur une évaluation des avancées réalisées dans la mise en œuvre de la Décision de Yamoussoukro ainsi que des effets observés dans le secteur.La Décision de Yamoussoukro libéralisant les services aériens en Afrique date d’il y a déjà dix ans, et pourtant l’état d’avancement de sa mise en œuvre dans les différentes régions est souvent mal connu. Alors qu’il est communément admis que l’application formelle des principes énoncés dans l’accord reste incomplète, la thèse repère nombre de développements intervenus sur différents marchés africains et tendant à mettre en lumière le décalage entre les réalités pratiques du secteur et la réalisation du cadre politique et juridique prévu par la Décision. Bien que ce décalage soit surtout le fait d’un petit nombre de gouvernements soucieux de protéger leurs transporteurs défaillants, il fait obstacle à une libéralisation complète, empêchant ainsi l’Afrique de profiter à plein des impacts positifs du transport aérien. La thèse passe en revue les implications économiques à attendre d’une libéralisation complète. Le but de cette recherche est d’identifier un ensemble de mesures à recommander aux gouvernements africains pour faire progresser la libéralisation effective des services aériens.La thèse démontre par ailleurs que la libéralisation des services aériens a connu des progrès substantiels au plan pratique grâce à la signature de nombreux accords bilatéraux, alors même que la mise en œuvre de la politique de libéralisation reste à la traîne dans plusieurs régions du continent, obérant ainsi le plein déploiement du potentiel économique du transport aérien pour l’Afrique.
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Beck, Jason. "Implementation and Experimentation with C4.5 Decision Trees." Honors in the Major Thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1157.
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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.Bachelors
Engineering and Computer Science
Computer Engineering
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LAPEBIE, GALLIANO CHRISTINE. "Implementation et optimisation de strategies de decision." Rennes 1, 1995. http://www.theses.fr/1995REN10131.
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Nous modelisons le choix multiattribut en decision individuelle par un processus base sur des strategies de decision, mises a jour par des psychologues en situation reelle, et tenant compte des capacites limitees (memoire, calculs,) de l'etre humain, et ce, afin d'implementer des systemes d'aide a la decision reposant sur ce principe. Chacune des strategies possede un certain nombre de parametres (transformation entre valeurs objectives et subjectives, seuils, importances relatives des attributs de description,) dont les valeurs dependent de l'expert etudie. Nous nous limitons au cas ou la decision ne s'etablit qu'entre deux objets. Dans ce cas, nous etudions les proprietes possedees par ces strategies, ayant trait a leur transitivite, aux conditions de pareto, et egalement a la reduction, que nous definissons ici, et qui relit les strategies entre elles. Pour les implementer efficacement, nous utilisons des heuristiques de type recuit simule, recherche tabou (que nous modifions en une recherche tabou a double voisinage et double fonction de cout), algorithmes genetiques. Finalement, nous testons les aspects apprentissage et generalisation de notre modele avec des conseillers d'orientation scolaire et dans le milieu bancaire
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Asim, Saad F. Asim. "The Binary Decision Diagram: Abstraction and Implementation." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu152414624378423.
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Badr, Bashar. "Implementation of decision trees for embedded systems." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14711.
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This research work develops real-time incremental learning decision tree solutions suitable for real-time embedded systems by virtue of having both a defined memory requirement and an upper bound on the computation time per training vector. In addition, the work provides embedded systems with the capabilities of rapid processing and training of streamed data problems, and adopts electronic hardware solutions to improve the performance of the developed algorithm. Two novel decision tree approaches, namely the Multi-Dimensional Frequency Table (MDFT) and the Hashed Frequency Table Decision Tree (HFTDT) represent the core of this research work. Both methods successfully incorporate a frequency table technique to produce a complete decision tree. The MDFT and HFTDT learning methods were designed with the ability to generate application specific code for both training and classification purposes according to the requirements of the targeted application. The MDFT allows the memory architecture to be specified statically before learning takes place within a deterministic execution time. The HFTDT method is a development of the MDFT where a reduction in the memory requirements is achieved within a deterministic execution time. The HFTDT achieved low memory usage when compared to existing decision tree methods and hardware acceleration improved the performance by up to 10 times in terms of the execution time.
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Aurélio, Diogo. "Lean management implementation: a decision making framework." Master's thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/9685.
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Submitted to the graduate faculty Universidade Nova de Lisboa – Faculdade de Ciências e Tecnologia in partial fulfillment of the requirements for the degree of Master in Industrial EngineeringIn this thesis the author proposes a thinking framework for decision makers considering the implementation of Lean Management methodologies in their industrial contex. The framework takes both internal and external context of each case into consderation. A logical order when considering Lean’s implementation is proposed, where strategic considerations should be taken first into consideration, and operational considerations after. Moreover, the framework proposes the power and leverage perspective on transactional exchange as the central factor to determine the strategic success of any implementation. Finally when it comes to operational considerations, a key thinking factor is taken into consideration, which is the potential penetration ability of Lean techniques according to the internal and external context. The framework is applied to a portuguese leading company in the molding industry that has already applied some Lean Management methodologies, which is Logoplaste. Results lead to conclusions that, not only Lean’s suitability varies according to context, but also that the potential penetration ability of Lean techniques decreases as the compliance level to Lean’s core principles increases, and that companies where Lean techniques with low penetration ability are suitable to be used, have a higher propensity to evolve into higher Lean maturity stages.
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Boland, Laura. "Implementation of Shared Decision Making in Pediatric Clinical Practice." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38181.
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Shared decision making (SDM) is rarely used in pediatric clinical practice. The purpose of this dissertation was to explore factors influencing SDM implementation in pediatric clinical practice. We conducted three studies that were guided by the Ottawa Model of Research Use (OMRU):
Study 1 was a systematic review using Cochrane methods and the Mixed Methods Appraisal Tool to determine pediatric SDM barriers and facilitators from multiple perspectives. Eighty studies, of low to high quality, were included. At each OMRU level, frequently cited barriers were: option features (decision), poor quality information (innovation), emotional state (adopter), power relations (relational), and insufficient time (environment). Frequently cited facilitators were: lower stake decisions (decision), agreement with SDM (adopter), high quality information (innovation), trust and respect (relational), and SDM tools/resources (environment). Across participant types, frequently cited barriers were: insufficient time (healthcare providers (HCP)), option features (parents), power imbalances (children), and HCPs’ SDM skills (observers). Frequently cited facilitators were: good quality information (HCPs) and agreement with SDM (parents/children).
Study 2 was a post-test design that evaluated SDM knowledge and acceptability of learners who completed the Ottawa Decision Support Tutorial (ODST). Most learners were HCPs (62%). Overall, ODST learners had a median knowledge test score of 8/10 (IQR = 7-9; n=6604) and 90% reported good or excellent impressions (n=4276) after completing the tutorial. Few learners suggested improvements.
Study 3 used mixed methods to evaluate pediatric HCPs’ perceived SDM barriers and facilitators after training (ODST plus workshop). Participants completed a SDM barrier survey (n=60; 88% response rate) and semi-structured interview (n=11). Their intention to use SDM was high (mean score = 5.6/7, SD=0.8). However, 90% of respondents reported minimal SDM use after training. Main barriers were lack of buy-in (adopter level) and time constraints (environmental level). Healthcare providers wanted a team-based approach to SDM training (training level).
Adopters face numerous and diverse barriers to SDM use, before and after SDM training. Pediatric HCPs who completed the ODST were knowledgeable about SDM. Despite positive intentions, training alone was insufficient to achieve routine SDM use. These findings can inform intervention development to promote SDM implementation in pediatric clinical practice.
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Chen, Chen. "SQL Implementation of Value Reduction with Multiset Decision Tables." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1387495607.
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Chen, Keyu. "A strategic decision making framework for organisational BIM implementation." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/88267/.
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Decision making during the adoption of Building Information Modelling (BIM) in current AEC projects is believed as a key element to improve both BIM performance and project outcome. In order to provide the most informed decision and strategic plan, two vital elements are required: a comprehensive set of decision making criteria and a reasonable priority system. The literature analysis has revealed that existing assessment frameworks have limitations concerning these two elements. Therefore, this research has been designed to develop a more effective BIM evaluation Framework (BeF), to assist new BIM users and also provide a more effective implementation approach for BIM. In order to accomplish this objective, research steps of theoretical and empirical nature have been adopted: (a) a multi-dimensional BIM implementation Framework (BiF) was proposed based on the literature review; (b) use of a case study to test the proposed BiF on a real-life project; (c) a questionnaire approach to test the comprehensiveness of the proposed BiF on an industry level; (d) applying the Delphi method to further refine the proposed criteria in a specific context; (e) using the Analytical Hierarchy Process (AHP) to develop a BeF and providing priority shifting for a more preferable strategic goal in Arup ShenZhen office (ASZ); (f) developing a validation system to prove the efficacy of the proposed BeF. The adoption priority and approach of BIM could be influenced by policies, culture, business structure, legislation etc. As a result, a specific context, China has been selected for this work. The research result could assist decision making in BIM management in the ASZ for a higher BIM performance. The framework by the Delphi method is suitable for the selected context: China. The proposed Delphi and AHP methodological framework can be replicated to assist decision making of BIM management in any AEC organisation.
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Kaniclides, Antonis. "Critical factors in executive information systems implementation." Thesis, University of York, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387555.
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Vaidyanathan, Vandana T. "Looking beyond the adoption decision in innovation research: investigating innovation implementation." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1101163398.
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Zhang, Jiaxiang. "Computational models of perceptual decision : neural representation, optimization, and implementation." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495775.
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Much experimental evidence indicates that lat perceptual decisions are made by integrating sensory information in cortical areas, until the accumulated evidence fies certain criteria. Recently proposed theories further suggest that the ain performs statistically optimal strategies during decision processes. This thesis extends and develops biologically inspired decision models from different aspects.
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Johnson, Stephen Thor. "Design and implementation of decision support systems for environmental management." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/74795.
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Taylor, Michael Bedford 1975. "Design decision in the implementation of a raw architecture workstation." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80206.
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Henrique, de Albuquerque Cassiano. "Decision Theory: a software implementation to educe the utility function." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/5371.
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Previous issue date: 2011Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
A avaliação da função utilidade de um indivíduo (ou grupo de indivíduos) não é uma tarefa simples. Aspectos psicológicos, teóricos e práticos intervêm neste processo e é necessário ter muito cuidado na elaboração e implementação do protocolo. A edução (elicitação) da utilidade de acordo com a teoria da decisão é uma tarefa que pode ser limitada devido a duas razões principais: à mediação cognitiva e à falta de um suporte adequado a este fim, de acordo com a teoria de von Neumann e Morgenstern (1944). Realizou-se uma revisão das ferramentas computacionais existentes no contexto de suporte a decisão. Apresenta-se nesta dissertação o Sistema de Edução de Preferências (SEP), uma solução em termos de software que dá suporte a edução dos valores da utilidade usando apenas as hipóteses de Von Neumann e Morgenstern. No SEP foram desenvolvidos e implementados vários algoritmos e interfaces para tornar mais fácil, rápida, agradável e confiável a sistemática da edução da função utilidade. Eduz-se a utilidade via SEP para dinheiro e compara-se os resultados com o método tradicional em questionário de papel. Exemplifica-se a edução multiatributo via software minimiza os problemas inerentes ao processo de edução como mostrado nos experimentos práticos ao longo da dissertação
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Rumreich, Laine. "The Binary Decision Diagram: Formal Verification of a Reference Implementation." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618940583868248.
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Miller, Susan J. "Successfully implementing strategic decisions : the implementation of top level decisions in organizations." Thesis, University of Bradford, 1990. http://hdl.handle.net/10454/2816.
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This thesis investigates the implementation of eleven strategic decisions in six organizations. The decisions concern the installation of new technology, the carrying out of various building programmes and the re-organization of organizational structures The organizations comprise a university, a water authority, two mail order companies and two chemical firms. The objective is to describe and explain implementation processes and outcomes. To this end, eleven independent variables and three dependent variables are distinguished. These conceptualise the success of implementation outcomes and define the factors which affect the level of success. Two groupings are isolated within the independent variables. The 'Enabler' group of variables is concerned with how familiar people are with what has to be implemented, the priority of implementation, having enough resources available, having a favourable organizational structure and maintaining a flexible approach during implementation. All these factors help to secure a moderate degree of success. However the second grouping of variables - the 'Realizers' - are required to achieve the highest level of success in implementation. These are to do with being clear about what has to be done and being able to evaluate what has been achieved, enjoying favourable conditions and support inside the organization, and having a little luck along the way. Conclusions are drawn about the levels of risk associated with implementing different topics and the steps which managers can take to reduce risk and enhance the chances of success.
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Sjah, Taslim. "Decision making and strategies for agricultural credit implementation in Lombok, Indonesia /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18981.pdf.
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Vlasschaert, Gillian. "British Columbia's cumulative effects framework : implementation and contribution to decision-making." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58333.
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Cumulative effects assessment is the systematic evaluation of impacts to the economic, social and environmental condition in combination with other past, present and foreseeable activities on the environment. The province of British Columbia has recently begun the implementation of the Cumulative Effects Framework, a policy that will enable cumulative effects assessments at a broad, strategic scale and provide cumulative effects information to natural resource decision-makers. The objective of this research project is to understand how cumulative effects assessments affect resource management decision-making. This research uses three approaches: 1) analysis of the content of two cumulative effects assessments conducted under the BC Framework; 2) a multiple case study evaluation of ‘pilot projects’ where cumulative effects information has been used in decision-making; and 3) interviews with those who had a working relationship with the Framework and the associated assessments. The findings show that based on early pilot application, the Cumulative Effects Framework has the capacity to meet its identified objectives. Issues of effectiveness were identified in the early stage of implementation resulting from out-of-date datasets and incomplete value assessments. Implementation insights from the analysis include suggestions for maintenance and monitoring practices that can support and improve the ongoing implementation phases, to enhance the functionality and decision-making benefits provided by the Framework. The Framework and resulting cumulative effects information will ultimately only be as useful as natural resource ministries choose to make it, though there are opportunities to improve access and utility.Graduate Studies, College of (Okanagan)
Graduate
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McConville, Jennifer R. "Assessing sustainable approaches to sanitation planning and implementation in West Africa." Licentiate thesis, Stockholm : Mark- och vattenteknik, Land and Water Resource Engineering, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4767.
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Pozo-Martin, F. "Multi-Criteria Decision Analysis (MCDA) as the basis for the development, implementation and evaluation of interactive patient decision aids." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2015. http://researchonline.lshtm.ac.uk/2391598/.
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BACKGROUND: In the context of the progressive movement towards patientcentred care, patient-specific decision support is an important focus of interest. Many diagnostic and treatment patient decision aids (PDAs) are now available to help patients make informed choice decisions. An increasing number of these are software-based, with some available online. Multi-Criteria Decision Analysis (MCDA) is a potentially useful technique on which to base a software-assisted PDA, especially when the decision is complex - as is the case in choosing the best treatment for non-small cell lung cancer – but it has so far been relatively little exploited in this area. The use of any from a number of existing MCDA-based software applications in the development and delivery of a MCDA-based interactive PDA can be an effective way of achieving “best-practice” or normative standards of decision making, such as 1) a well-constructed set of decision criteria or 2) logically consistent patient preferences. However, it also involves the use of resources such as the time and cognitive effort involved in decision-making. The comparative evaluation of alternative MCDA-based software applications in developing and delivering a PDA therefore involves trade-offs between decision effectiveness and decision resource criteria moving from the normative to the prescriptive. MCDA is an ideal tool for this meta-evaluation task as well as for the adoption decision itself. AIM: To analyse, as proof of concept, the use of MCDA for the development, implementation and evaluation of interactive PDAs in routine clinical practice. OBJECTIVES: 1. To assess the use with clinicians in the Spanish NHS of two alternative MCDA software applications which implement dissimilar MCDA techniques in the development of a PDA in routine clinical practice; 2. To assess the use with clinicians in the Spanish NHS of the same two alternative MCDA software applications in the implementation of a PDA in an environment replicating actual clinical consultations; 3. To build a meta-multi-criteria decision model based on the Decision Resources Decision Effectiveness Analysis (DRDEA) framework and assess the use of this model by clinicians in the Spanish NHS to make the choice between the two MCDA applications as the basis for a PDA. METHODS: 1) Two dissimilar MCDA software applications served as a basis for the development of a lung cancer clinical management PDA in close collaboration with two different groups of three clinicians from two different Spanish NHS hospitals (H1 and H2): 1) Expert Choice, which implements the Analytic Hierarchy Process (AHP) MCDA approach; 2) Annalisa in Elicia (ALEL), which implements the Simple Attribute Weighting (SAW) MCDA approach. The process of codevelopment of the PDA in hospitals H1 and H2 was documented; 2) Expert Choice was used to implement (i.e. deliver) the lung cancer clinical management PDA in three hypothetical consultations in hospital H1. In each consultation, one of the three clinicians involved in the development of the tool, with support by this researcher, guided a proxy patient (a non-clinical member of hospital staff) through the PDA. The same process was repeated with the MCDA software ALEL in hospital H2. The process of delivery of the PDA in hospitals H1 and H2 was documented; 3) This researcher built a meta-multi-criteria decision model based on the DRDEA framework to help clinicians choose between different MCDA software applications as the basis of a PDA. The MCDA approach used for this meta-model was Multi- Attribute Value Theory (MAVT). The model was implemented, using the software HiView 3, with three clinicians from hospital H3 for the choice between Expert Choice and ALEL as the basis of a lung cancer clinical management PDA. RESULTS: The thesis makes a three-fold contribution to research in patient-centred decision support. First, it presents two new MCDA software-based approaches to clinical decision support, based on joint work with clinicians in the Spanish NHS, for developing an interactive PDA for the clinical management of non-small cell lung cancer. Second, it describes the use of these decision support tools in the delivery of 5 an interactive PDA for the clinical management of non-small cell lung cancer in a hospital environment via simulated consultations between actual clinicians, with support from this researcher, and proxy lung cancer patients. Third, it presents and applies a new MCDA-based methodology for evaluating the use of alternative MCDA software applications in the development and delivery of interactive PDAs.
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Fabray, Christopher Edward. "Study of management decision making by ward sisters in a hospital and the effects on decision making after the implementation of a decision support system." Thesis, Aston University, 1992. http://publications.aston.ac.uk/10815/.
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This thesis considers management decision making at the ward level in hospitals especially by ward sisters, and the effectiveness of the intervention of a decision support system. Nursing practice theories were related to organisation and management theories in order to conceptualise a decision making framework for nurse manpower planning and deployment at the ward level. Decision and systems theories were explored to understand the concepts of decision making and the realities of power in an organisation. In essence, the hypothesis was concerned with changes in patterns of decision making that could occur with the intervention of a decision support system and that the degree of change would be governed by a set of 'difficulty' factors within wards in a hospital. During the course of the study, a classification of ward management decision making was created, together with the development and validation of measuring instruments to test the research hypothesis. The decision support system used was rigorously evaluated to test whether benefits did accrue from its implementation. Quantitative results from sample wards together with qualitative information collected, were used to test this hypothesis and the outcomes postulated were supported by these findings. The main conclusion from this research is that a more rational approach to management decision making is feasible, using information from a decision support system. However, wards and ward sisters that need the most assistance, where the `difficulty' factors in the organisation are highest, benefit the least from this type of system. Organisational reviews are needed on these identified wards, involving managers and doctors, to reduce the levels of un-coordinated activities and disruption.
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Studer, Christoph. "Iterative MIMO decoding algorithms and VLSI implementation aspects." Konstanz Hartung-Gorre, 2009. http://d-nb.info/999022172/04.
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Göransson, Bengt. "A decision is made - and then? : an empirical study of implementation efficiency /." Uppsala : Dept. of Economics, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200796.pdf.
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Mahmood, Ali. "Decision support for operational ERP systems implementation in small and medium enterprises." Thesis, University of Greenwich, 2013. http://gala.gre.ac.uk/11993/.
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Today organisations, due to increased competition, globalisation and cost saving, are seeking ways to improve their operational effectiveness and sustain their competitive advantage through effective deployment of available resources and strategically implementing business processes. It is observed that incorporating new developments in information technology with core business processes results in enhanced functioning and improved services to customers. To benefit from the available IT support, organisations are adopting application software, such as ERP systems, to improve operation efficiency and productivity. ERP system is primarily implemented to integrate business processes and enhance productivity. However, ERP system comes with a high price tag, implementation complexities, and prerequisite changes in how organisation and its staff functions. Implementing ERP is a challenging task for SMEs since it consumes a major portion of limited resources and carries a high risk of causing adverse consequences. To overcome the implementation challenges and assist SMEs in ERP implementation, an integrated decision support system for ERP implementation (DSS_ERP) is developed in this research. This decision support system consists of analytical regression models, a simulation model and nonlinear programming models, and it enables SMEs to identify the resources requirements for achieving the predetermined goals prior to ERP implementation. The key contribution from this research are: i) the DSS_ERP offers an analytical models to monitor the implementation progress and cost consumed by each critical success factor (CSF) during the implementation against time; ii) it assists in determining the priorities of CSFs, based on which it facilitates decision makings on resource allocations to achieve the predetermined target; iii) and it can be applied to evaluate the impacts of changes to the resources allocations.
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Quint, Ryan David. "Practical Implementation of a Security-Dependability Adaptive Voting Scheme Using Decision Trees." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/35667.
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Todayâ s electric power system is operated under increasingly stressed conditions. As electrical demand increases, the existing grid is operated closer to its stable operating limits while maintaining high reliability of electric power delivery to its customers. Protective schemes are designed to account for pressures towards unstable operation, but there is always a tradeoff between security and dependability of this protection.
Adaptive relaying schemes that can change or modify their operation based on prevailing system conditions are an example of a protective scheme increasing reliability of the power system. The purpose of this thesis is to validate and analyze implementation of the Security-Dependability Adaptive Voting Scheme. It is demonstrated that this scheme can be implemented with a select few Phasor Measurement Units (PMUs) reporting positive sequence currents to a Phasor Data Concentrator (PDC). At the PDC, the state of the power system is defined as Stressed or Safe and a set of relays either vote or perform normal operation, respectively.
The Adaptive Voting Scheme was implemented using two configurations: hardware- and software-based PDC solutions. Each was shown to be functional, effective, and practical for implementation. Practicality was based on the latency of Wide Area Measurement (WAM) devices and the added latency of relay voting operation during Stressed conditions. Phasor Measurement Units (PMUs), Phasor Data Concentrators (PDCs), and relay operation delays were quantified to determine the benefits and limitations of WAMS protection and implementation of the voting scheme. It is proposed that the delays injected into the existing protection schemes would have minimal effect on the voting scheme but must be accounted for when implementing power system controls due to the real-time requirements of the data.Master of Science
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Mtegha, Chigomezgo L. D. "Cabinet decision making in Malawi and Zambia : implications for development policy implementation." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/3755.
Full textAbstract:
Word processed copy.Includes bibliographical references (leaves 61-66).
The study unravels the nature of Cabinet decision making in African Public Sector systems, and discusses its implications on development policy implementation. The demands on the State, and its key machinery, the Public Service, have evolved over time. Many states, including Zambia and Malawi, have since independence seen a decline in the welfare of their citizens, despite the plethora of development policy instruments that have been put in place to address this worrying situation. Weak policy implementation has been cited as the problem.
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Inoue, Megumi. "End-of-life care planning and its implementation." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:104093.
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Thesis advisor: Megumi InoueEnd-of-life care planning is an opportunity for people to express how they want to spend the final stage of their lives by directing what type of medical treatment they wish or do not wish to receive. The completion of such planning is a way to exercise their autonomy, which is one of the fundamental ethical principles in medicine in the United States. Many older adults in the U.S., however, do not have such a plan or even discuss the topic with anyone. In order to understand the circumstances in which end-of-life planning is enacted, this study investigated two important research questions: (1) What are the sociodemographic and psychosocial factors that enhance or impede the completion of end-of-life planning? (2) How consistent is the content of a living will with the person's actual dying experience? These research questions were developed and examined as an application of expectancy theory, which explains the concepts of motivation and action. A series of logistic regression analyses were conducted. This study analyzed data from the Health and Retirement Study (HRS), which is a nationally representative sample of Americans over the age of 50. The analytic subsample included those who died between 2000 and 2010 (N = 6,668). The study found that persons who were older, who identified themselves as White, who had higher levels of income and education, and who were widowed or separated were more likely to be motivated to complete end-of-life planning. A higher level of sense of mastery was specifically relevant to documentation of living wills. On the other hand, a lower level of religiosity was specifically associated with having a durable power of attorney for health care. In addition, there was a clear connection between a request for palliative care and less troubling pain. Implications include conducting a community- or workplace-based public educational campaign, incorporating a culturally tailored approach for racial/ethnic minorities (e.g. faith-based interventions), using advance directives written in easy to understand language (e.g. Five Wishes), and funding Medicare provision for end-of-life care consultations between doctors and patients during annual physical exams
Thesis (PhD) — Boston College, 2014
Submitted to: Boston College. Graduate School of Social Work
Discipline: Social Work
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Luna, Amjad A. "The design and implementation of trellis-based soft decision decoders for block codes." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15818.
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Falk, Peter R. "ARIES : an architectural implementation of a multi-criterion Spatial Decision Support System (SDSS)." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341746.
Full textAbstract:
Thesis (M.S. in Information Technology Management) Naval Postgraduate School, September 1997."September 1997." Thesis advisor(s): Daniel R. Dolk, Dale M. Courtnery. Includes bibliography references (p. 267-274). Also available online.
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Holmberg, Anders, and Per-Erik Eriksson. "Decision Support System for Fault Isolation of JAS 39 Gripen : Development and Implementation." Thesis, Linköping University, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7021.
Full textAbstract:
This thesis is a result of the increased requirements on availability and costs of the aircraft Jas 39 Gripen. The work has been to specify demands and to find methods suitable for development of a decision support system for the fault isolation of the aircraft. The work has also been to implement the chosen method. Two different methods are presented and a detailed comparison is performed with the demands as a starting point. The chosen method handle multiple faults in O(N2)-time where N is the number of components. The implementation shows how all demands are fulfilled and how new tests can be added during execution. Since the thesis covers the development of a prototype no practical evaluation with compare of manually isolation is done.
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Miller, Ryan Craig. "A rangeland watershed management spatial decision support system: Design, implementation, and sensitivity analysis." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280563.
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A prototype spatial decision support system for rangeland watershed management was developed to simplify the process of incorporating advances in technology into the decision process. The application utilizes an open framework by using Web services that are components that communicate using text-based messages, thus eliminating proprietary protocols. This new framework provides an extensible, accessible, and interoperable approach for spatial decision support systems. An important input into the SDSS is digital elevation data where data are produced using different methods, and with different accuracies and resolutions. Six digital elevation models were compared with survey data to evaluate accuracies at different locations in the Walnut Gulch Experimental Watershed. The sensitivity of the SDSS was evaluated using six management systems that were ranked based on minimizing sediment yield. The sensitivity of the DEM, contributing source area value, and precipitation event size on management system rankings was evaluated. Results provide assistance for users in selecting these data and modeling values. This research illustrated that recent advances in information technology can be effectively utilized in watershed decision support technology. The Internet-based SDSS provides core functionality required for rangeland watershed management education and decision-making. In comparing digital elevation data of different sources and resolutions with survey data, the DEM data approximated surfaces well, with the higher resolution data producing lower root mean square error values. And finally, different digital elevation models, contributing source area values, and precipitation event sizes produced different management system rankings. (Abstract shortened by UMI.)
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Jong, Yungong Theophilus. "GIS implementation as a decision support tool for planning and managing development interventions." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/d1021227.
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The aim of this study is to examine key implementation and managerial issues surrounding the use of a Geographic Information Systems (GIS) as a Decisions Support Tool (DST) for planning and managing development interventions. Ever since the emergence of GIS as a powerful analytical tool in almost all spheres of human endeavour, many organisations involved in development work have adopted its use. But the challenges of conceiving and implementing a GIS in ways that are more responsive to the problems that trigger its purchase remains a daunting task to many development organisations; even those with a wealth of experience in GIS. This is one of the motivating factors for this study. In this research, some relevant themes in GIS implementation and GIS management as a Spatial Decision Support System (SDSS) were examined in the literature review. A case study research strategy was used focusing on the experience of the Nelson Mandela Bay Municipality Enterprise GIS (EGIS). The study examined how the system is been ran and what other development organisations can learn from this experience. Data was collected and analysed using a mixed research methods approach. The findings show a good level of GIS acceptance among municipality staff. However, running the system is not hitch free. A couple of problems and challenges were identified on the field. It is recommended that the municipality like most development organisations seeking GIS solutions should put the user at the centre of every technical innovation in GIS as a DST.
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Joyce, Robert K. "Successful Implementation of Decision Support Systems for Supply Chain Management within Manufacturing Companies." NSUWorks, 2005. http://nsuworks.nova.edu/gscis_etd/619.
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Decision Support Systems (DSS) development and implementation is a challenge that most manufacturing companies find difficult. However, implementing these complex systems is becoming more of a necessity to stay competitive in today's global economy. This paper reports on an in-depth empirical study of development/Implementation strategies commonly used in DSS and Enterprise Resource Planning (ERP) systems projects to promote success. The goal of the research was to determine which strategies promote success on DSS projects designed to enable supply chain management (SCM).
Through a survey of 80 industry professionals, the Study establishes that there are strategies that should be utilized based on system type. DSS users must have strong analytical skills. They must be able to analyze, interpret, and act on complex data. These analytical skills were found to be significantly more important for DSS users to have than ERP users (p < 0.05). Intelligent SCM systems must include "what if' functionality and allow users to evaluate multiple business scenarios before acting. The "small releases" systems development methodology (i.e., phased approach to implementing business functionality was found to be more appropriate for DSS than ERP projects (p < 0.05).
Many strategies, which are traditionally considered administrative in nature, were found to be more important for ERP systems projects (p< 0.05). Utilizing cross-functional project teams, ensuring user participation, securing top-management support, and providing extensive user training were all found to be significantly more important for ERP (p
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Skoglund, Daniel. "Implementation of A-CDM - A pilot study at Bromma Airport." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129578.
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Syftet med denna rapport har varit att författa en förstudie åt Bromma flygplats, förstudien har inletts med en nulägesanalys av Bromma flygplats nuvarande organisation och flygoperativa process. Detta för att utreda hur Bromma flygplats nuvarande rutiner och organisation ser ut. Därefter har en genomgång av Bromma flygplats informationsdelning rutiner gjorts. En sammanfattning har även gjorts av Eurocontrols implementeringsmanual, en tidigare implementeringsstudie av A-CDM samt en intervju genomförts med avsikten att presentera vad som generellt krävs för att kunna implementera A-CDM på en flygplats. Granskningen av Bromma flygplats informationsdelning och hur det generella implementeringsarbetet ska gå till, har legat till grund för att kunna presentera de rekommendationer som Bromma flygplats bör åtgärda och genomför för att kunna implementera A-CDM. Till sist har även de troliga effekter som Bromma flygplats kan förvänta sig av ett implementerat A-CDM presenterats.
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Bernroider, Edward, Nikolaus Obwegeser, and Volker Stix. "Analysis of Heuristic Validity, Efficiency and Applicability of the Profile Distance Method for Implementation in Decision Support Systems." Elsevier, 2011. http://dx.doi.org/10.1016/j.cor.2010.09.017.
Full textAbstract:
This article seeks to enhance acceptance of the profile distance method (PDM) in decision support
systems. The PDM is a multiple attributive based decision making as well as a multiple method
approach to support complex decision making and uses a heuristic to avoid computationally complex
global optimization. We elaborate on the usability of the method and question the heuristic used. We
present a bisection algorithm, which efficiently supports the discovery of transition profiles needed in
a user-friendly and practical application of the method. Additionally, we provide empirical evidence
showing that the proposed heuristic is efficient and delivers results within 5% of the global optimizer
for a wide range of data sets.
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Thomas, Michael Kyle. "Implementation of the Security-Dependability Adaptive Voting Scheme." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32542.
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As the world moves further into the 21st century, the electricity demand worldwide continues to rapidly grow. The power systems that supply this growing demand continue to be pushed closer to their limits. When those limits are exceeded, system blackouts occur that have massive societal and economical impact. Power system protection relays make up a piece of these limits and can be important factors in preventing or causing a system blackout. The purpose of this thesis is to present a working implementation of an adaptive protection scheme known as the adaptive voting scheme, used to alter the security/dependability balance of protection schemes. It is argued that as power system conditions change, the ability of protection relays to adjust the security/dependability balance based on those conditions can allow relays to play a part in preventing power system catastrophes.
It is shown that the adaptive voting scheme can be implemented on existing protection technology given Wide Area Measurements (WAMs) provided by Phasor Measurement Units (PMUs). The proposed implementation characteristics allow numerous existing protection practices to be used without changing the basic operation of the practices.Master of Science
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CHen, Canghai. "Optimised dose titration for Duodopatreatment based on simulation experiments– implementation in a decision supportsystem." Thesis, Högskolan Dalarna, Datateknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3978.
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The aim of this work was to design a set of rules for levodopa infusion dose adjustment in Parkinson’s disease based on a simulation experiments. Using this simulator, optimal infusions dose in different conditions were calculated. There are seven conditions (-3 to +3)appearing in a rating scale for Parkinson’s disease patients. By finding mean of the differences between conditions and optimal dose, two sets of rules were designed. The set of rules was optimized by several testing. Usefulness for optimizing the titration procedure of new infusion patients based on rule-based reasoning was investigated. Results show that both of the number of the steps and the errors for finding optimal dose was shorten by new rules. At last, the dose predicted with new rules well on each single occasion of majority of patients in simulation experiments.
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Elinas, Pantelis. "On the design and implementation of decision-theoretic, interactive, and vision-driven mobile robots." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/245.
Full textAbstract:
We present a framework for the design and implementation of visually-guided, interactive, mobile robots. Essential to the framework's robust performance is our behavior-based robot control architecture
enhanced with a state of the art decision-theoretic planner that takes into account the temporal characteristics of robot actions and allows us to achieve principled coordination of complex subtasks implemented as robot behaviors/skills. We study two different models of the decision theoretic layer: Multiply Sectioned Markov Decision Processes (MSMDPs) under the assumption that
the world state is fully observable by the agent, and Partially Observable Markov Decision Processes (POMDPs)
that remove the latter assumption and allow us to model the uncertainty in sensor measurements.
The MSMDP model utilizes a divide-and-conquer approach for solving problems with millions of states using concurrent actions. For solving large POMDPs, we present heuristics that improve the computational efficiency
of the point-based value iteration algorithm while tackling the problem of multi-step actions using Dynamic Bayesian Networks.
In addition, we describe a state-of-the-art simultaneous localization and mapping algorithm for robots equipped
with stereo vision. We first present the Monte-Carlo algorithm sigmaMCL for robot localization in 3D using
natural landmarks identified by their appearance in images. Secondly, we extend sigmaMCL and develop the sigmaSLAM
algorithm for solving the simultaneous localization and mapping problem for visually-guided, mobile robots. We
demonstrate our real-time algorithm mapping large, indoor environments in the presence of large changes in illumination, image blurring and dynamic objects.
Finally, we demonstrate empirically the applicability of our framework for developing interactive, mobile robots capable of completing complex tasks with the aid of a human companion. We present an award winning robot waiter for serving hors d'oeuvres at
receptions and a robot for delivering verbal messages among inhabitants of an office-like environment.
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Houck, Dale E. Shigley Mark V. "RSLES : an architectural implementation of a decision support system for optimal recruit station location /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA365990.
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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, June 1999."June 1999". Thesis advisor, Daniel R. Dolk. Includes bibliographical references (p. 167-168). Also available online.
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Somoza, Tornos Ana. "Decision support strategies for the efficient implementation of circular economy principles in process systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/671071.
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Economic growth at any expense is no longer an option. Awareness of the growing human footprint is crucial to face the problems that the impoverishment of ecosystems is causing and will cause in the future. One of the key challenges to address it is moving toward approaches to manage resources in a more sustainable way. In this light, circular economy stands as a promising strategy to improve the lifetime of resources by closing material and energy loops.
The Process Systems Engineering (PSE) community has been developing methods and tools for increasing efficiency in process systems since the late 1980s. These methods and tools allow the development of more sustainable products, processes, and supply chains. However, applying these tools to circular economy requires special considerations when evaluating the introduction of waste-to-resource technologies. This Thesis aims at providing a set of models and tools to support in the decision-making process of closing material cycles in process systems through the implementation of waste-to-resource technologies from the circular economy perspective.
The first part provides an overview of approaches to sustainability, presents the optimization challenges that circular economy and industrial symbiosis pose to PSE, and introduces the methodological and industrial scope of the Thesis. Part two aims at assessing the environmental and economic reward that may be attained through the application of circular economy principles in the chemical industry. With this purpose, a systematic procedure based on Life Cycle Assessment (LCA), economic performance and Technology Readiness Level (TRL) is proposed to characterize technologies and facilitate the comparison of traditional and novel technologies.
The third part describes groundwork tasks for optimization models. A methodology is presented for the systematic generation of a list of potential waste-to-resource technologies based on an ontological framework to structure the information. In addition, this part also presents a targeting approach developed to include waste transformation and resource outsourcing, so a new dimension of potential destinations for waste are explored for the extension of material recovery.
Finally, part four includes the development of decision-making models at the strategic and tactical hierarchical levels. At the network level, a framework is presented for the screening of waste-to-resource technologies in the design of process networks. The most promising processing network for waste recovery is identified by selecting the most favorable waste transformation processes among a list of potential alternatives. After the network selection, an optimization model is built for the detailed synthesis of individual processes selected in the resulting network.
The developed methodologies have been validated and illustrated through their application to a case study under different viewpoints in the process industry, in particular to the chemical recycling of plastic waste. Despite the low Technology Readiness Level of some chemical recycling technologies, the results of this Thesis reveal pyrolysis as a promising technology to close the loop in the polymer sector.
Overall, all these positive outcomes prove the advantages of developing tools to systematically integrate waste-to-resource processes into the life cycle of materials. The adaptation to this change of perspective of the well-established methods developed by the PSE community offers a wide range of opportunities to foster circular economy and industrial symbiosis. This Thesis aims to be a step forward towards a future with more economically efficient and environmentally friendly life cycles of materials.El crecimiento económico a cualquier precio ha dejado de ser una opción viable. Tener conciencia sobre nuestra creciente huella ambiental es clave para afrontar los problemas que el empobrecimiento de los ecosistemas está causando y causará en el futuro. Uno de los desafíos clave para abordarlo es avanzar hacia técnicas que permitan una gestión de recursos más sostenible. En esta línea, la economía circular es una estrategia con gran potencial para mejorar la vida útil de los recursos mediante el cierre de ciclos de materiales y energía. Desde finales de los años ochenta, la investigación en Ingeniería de Procesos y Sistemas (PSE) ha permitido generar métodos y herramientas para el desarrollo sostenible de productos, procesos y cadenas de suministro. Sin embargo, su aplicación en economía circular requiere consideraciones especiales al evaluar la introducción de nuevas tecnologías para el reciclaje de materiales. Esta Tesis tiene como objetivo proporcionar un conjunto de modelos y herramientas para apoyar el proceso de toma de decisiones sobre el aprovechamiento de materiales a través de la lente de la economía circular mediante la implementación de tecnologías de conversión de residuos en recursos. La primera parte presenta una visión general de los enfoques de sostenibilidad, lista los desafíos que la economía circular y la simbiosis industrial plantean en PSE, e introduce el alcance metodológico e industrial de la Tesis. La segunda parte tiene como objetivo evaluar los beneficios ambientales y económicos que se pueden obtener mediante la aplicación de los principios de la economía circular en la industria química. Con este propósito, se desarrolla un método sistemático basado en el análisis del ciclo de vida, el rendimiento económico y el nivel de madurez tecnológica para caracterizar las tecnologías de recuperación y facilitar la comparación entre técnicas tradicionales y en desarrollo. La tercera parte describe las tareas previas al desarrollo de los modelos de optimización. Se presenta una metodología para la generación sistemática de una lista de posibles tecnologías de conversión de residuos en recursos utilizando en un marco ontológico para estructurar la información. Además, se expone un método para acotar la transformación de residuos y la externalización de recursos, que permite explorar una nueva dimensión de destinos potenciales para los residuos, extendiendo así el grado de recuperación de materiales. Por último, la cuarta parte incluye el desarrollo de modelos de toma de decisiones a nivel estratégico y táctico. A nivel estratégico, se presenta un marco para la detección de tecnologías de reciclaje de residuos en el diseño de redes de procesos. Tras sintetizar la red, a nivel táctico se construye un modelo de optimización para el diseño detallado de los procesos individuales seleccionados en el mismo. Las metodologías desarrolladas han sido ilustradas y validadas a través de su aplicación en un caso de estudio con diferentes perspectivas sobre el reciclaje químico de residuos plásticos. A pesar del bajo nivel de madurez tecnológica de los procesos de reciclaje químico, los resultados de esta Tesis permiten identificar el gran potencial económico y ambiental de la pirolisis de residuos plásticos para cerrar su ciclo de materiales. En conjunto, los resultados demuestran las ventajas de desarrollar herramientas para integrar sistemáticamente los procesos de reciclaje de residuos en el ciclo de vida de los materiales. La adaptación a las necesidades de este cambio de perspectiva de métodos bien establecidos en la comunidad PSE ofrece grandes oportunidades para fomentar la economía circular y la simbiosis industrial. Esta tesis pretende ser un paso adelante hacia un futuro con ciclos de vida de materiales económica y ambientalmente más eficientes.
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Houck, Dale E., and Mark V. Shigley. "RSLES: an architectural implementation of a decision support system for optimal recruit station location." Thesis, Monterey, California. Naval Postgraduate School, 1999. http://hdl.handle.net/10945/8933.
Full textAbstract:
Approved for Public release; distribution is unlimitedThis thesis describes a component-based methodology for developing a decision support system (DSS) for optimal location of military recruiting stations in regional recruiting markets. The DSS is designed to ensure that stations are selected that minimize cost for a given level of production. The interface allows users to perform "what if' analysis to determine if there are better locations to meet desired objectives. The Recruit Station Location Evaluation System (RSLES) integrates a user interface, a database, a GAMS optimizer model and a geographic information system (GIS) mapping engine to provide a flexible environment that leverages operational recruiting, market analysis, and demographic information for decision-making
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Iguernelala, Mohamed. "Strengthening the heart of an SMT-solver : Design and implementation of efficient decision procedures." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00842555.
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This thesis tackles the problem of automatically proving the validity of mathematical formulas generated by program verification tools. In particular, it focuses on Satisfiability Modulo Theories (SMT): a young research topic that has seen great advances during the last decade. The solvers of this family have various applications in hardware design, program verification, model checking, etc.SMT solvers offer a good compromise between expressiveness and efficiency. They rely on a tight cooperation between a SAT solver and a combination of decision procedures for specific theories, such as the free theory of equality with uninterpreted symbols, linear arithmetic over integers and rationals, or the theory of arrays.This thesis aims at improving the efficiency and the expressiveness of the Alt-Ergo SMT solver. For that, we designed a new decision procedure for the theory of linear integer arithmetic. This procedure is inspired by Fourier-Motzkin's method, but it uses a rational simplex to perform computations in practice. We have also designed a new combination framework, capable of reasoning in the union of the free theory of equality, the AC theory of associative and commutativesymbols, and an arbitrary signature-disjoint Shostak theory. This framework is a modular and non-intrusive extension of the ground AC completion procedure with the given Shostak theory. In addition, we have extended Alt-Ergo with existing decision procedures to integrate additional interesting theories, such as the theory of enumerated data types and the theory of arrays. Finally, we have explored preprocessing techniques for formulas simplification as well as the enhancement of Alt-Ergo's SAT solver.
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Blazer, William E. "Design and implementation of an Intelligent Cost Estimation Model for Decision Support System software." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA241322.
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Thesis (M.S. in Information Systems)--Naval Postgraduate School, September 1990.Thesis Advisor(s): Bui, Tung X. Second Reader: Abdel-Hamid, Tarek. "September 1990." Description based on title screen viewed on December 16, 2009. DTIC Descriptor(s): Computer programs, methodology, parametric analysis, environments, sizes(dimensions), decision support systems, cost estimates, theses, estimates, costs, cost models, mathematical models, models DTIC Identifier(s): Cost estimates, models, computer programs, decision support systems, Author(s) subject terms: Software cost estimation model; COCOMO, function point Includes bibliographical references (p. 115-118). Also available in print.
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Sjarbaini, Larissa. "The knowledge dynamics of organizational innovation understanding the implementation of decision support for planners /." [S.l. : [Groningen : s.n.] ; University of Groningen] [Host], 2009. http://irs.ub.rug.nl/ppn/316341967.
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Hijazeen, Rima. "Implementation and evaluation of a computerised anticoagulation decision support tool for managing atrial fibrillation." Thesis, Keele University, 2018. http://eprints.keele.ac.uk/5169/.
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Background: Anticoagulation therapy for patients with atrial fibrillation (AF) remains a national challenge. A decision support tool (DST) was developed to assist healthcare professionals (HCPs) in the appropriate prescribing of anticoagulants in patients with AF. This thesis aimed to evaluate the utility of the DST and associated patient decision aid (PDA) for anticoagulant decision making in clinical practice. Methods: This study involved a series of sequential stages in the evaluation of the DST. Semi-structured interviews were conducted with forty-seven HCPs to explore their perceptions of anticoagulation prescribing decision. Using a vignette, the perspective of HCPs on the potential utility of the DST and associated PDA were explored using both semi-structured interviews and questionnaires. Second interviews were conducted approximately eight weeks from the initial contact to explore HCPs’ perspectives on the actual utility from implementing the DST and associated PDA in routine clinical practice. The perspectives of a group of AF patients’ who had experienced the DA during consultation were explored using semi-structured interviews and questionnaires. Results: Qualitative themes elicited during initial contact revealed that anticoagulants prescribing decision can be suboptimal. Findings from the pre-intervention evaluation showed that the DST has potential to improve the quality of anticoagulants decision process. Findings from post-intervention evaluation demonstrated improvements in anticoagulants decision-making in clinical practice. Findings from fourteen patients revealed that the DA was effective in facilitating a quality decision that was informed and consistent with personal values and expectations. Conclusions: This study demonstrated the positive impact the DST can have on the quality of anticoagulants decision-making in clinical practice and provides a unique contribution to the existing CDSS research. The ever-increasing demand for a quality decision-making process in clinical practice is a fertile environment for clinicians and policymakers to consider the potential impact that the DST and associated PDA can offer.
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Joshi, Chetan. "Development of a Decision Support Tool for Planning Rail Systems: An Implementation in TSAM." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/31024.
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A Decision Support model for planning Intercity Railways is presented in this research. The main aim of the model is to generate inputs for the logit model existing in the Virginia Tech Transportation Systems Analysis Model (TSAM). The inputs required by the TSAM logit model are travel time, travel cost and schedule delay. Travel times and travel costs for different rail technologies are calculated using a rail network and actual or proposed rail schedules. The concept of relational databases is used in the development of the network topology. Further, an event graph approach is used for analysis of the generated network. Shortest travel times and their corresponding travel costs between origin-destination pairs are found using Floydâ s algorithm. Complete itineraries including transfers (if involved) are intrinsically held in the precedence matrix generated after running the algorithm. A standard mapping technique is used to obtain the actual routes. The algorithms developed, have been implemented in MATLAB. Schedules from the North American Passenger rail system AMTRAK are used to generate the sample network for this study. The model developed allows the user to evaluate what-if scenarios for various route frequencies and rail technologies such as Accelerail, High Speed Rail and Maglev. The user also has the option of modifying route information. Comparison of travel time values for the mentioned technology types in different corridors revealed that frequency of service has a greater impact on the total travel time in shorter distance corridors, whereas technology/line-haul speed has a greater influence on the total travel time in the longer distance corridors. This tool could be useful to make preliminary assessments of future rail systems. The network topology generated by the algorithm can further be used for network flow assignment, especially time-dependent assignment if used with dynamic graph algorithms.Master of Science
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Zhu, Xuan. "A knowledge-based approach to the design and implementation of spatial decision support systems." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/21632.
Full textAbstract:
Geographical information systems (GIS), expert systems (ES) and spatial decision support systems (SDSS) are becoming important tools for supporting managers and planners in making decisions for resource and environmental management. In recent years, attention has turned to the integration of existing GIS, ES systems and other problem-solving techniques to develop more powerful SDSS systems. Such systems should lead to significant competitive advantages, such as cost savings, the ability to couple analytical modelling with heuristic reasoning, and automated explanation facilities for interpreting and justifying the results of modelling studies. However, early attempts have also demonstrated a number of drawbacks, such as user unfriendliness, lack of flexible model management capabilities and poor adaptation to users' needs. To try and overcome some of these problems, this research establishes a new approach to the development of spatial decision support systems within an integrated framework of GIS, spatial modelling and expert systems techniques and technologies. In this approach, knowledge-based techniques are introduced into the design of knowledge-based spatial decision support systems (KBSDSS), with emphasis on the design of a representation scheme based on spatial influence diagrams and mechanisms for structuring, representing and formulating spatial problems, together with automation of the solution process. Spatial influence diagrams are graphic knowledge representations for resource and environmental problems, consisting of information about all problem variables or parameters and their relationships. They can be seen as spatial analogues of influence diagrams developed for decision analysis. However, spatial influence diagrams are deterministic cases of influence diagrams without decision components. Algorithms are developed to formulate and evaluate spatial influence diagrams using domain-specific knowledge in the system to represent and evaluate specific spatial problems according to the decision marker's perspective.
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Elder, Mark D. "Visual interactive modelling : some guidelines for its implementation and some aspects of its potential impact on operational research." Thesis, University of Strathclyde, 1992. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21384.
Full textAbstract:
The thesis reports a research programme designed to answer two research questions. These are concerned with improving the practice of Visual Interactive Modelling in the context of an Operational Research activity and the potential contribution of Visual Interactive Modelling towards overcoming certain long term concerns which the Operational Research community has regarding the service it provides. The literature of Visual Interactive Modelling is reviewed, as is that of wider aspects of Operational Research concerned with the paradigm used by its practitioners and researchers. Two series of experimental studies are undertaken to collect data to help answer the research questions. Action Research is used for a series of six studies of Visual Interactive Modelling cases. The second series is more laboratory based to gain a type of data which is not available from Action Research. Results are presented in three forms. A 'body of experience' is collated from the data collected during the studies. This will form a base for future researchers in the Visual Interactive Modelling field. Secondly, a series of guidelines is tentatively proposed which could be used by practitioners as a basis for good practice in Visual Interactive Modelling. Finally, in the light of the data collected and reviews of the literature, a new way of considering the contribution of Visual Interactive Modelling to the Operational Research process is proposed. Suggestions for further research are offered.