Dissertations / Theses on the topic 'Document Management Systems'
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Mullin, Jim. "Prototype system for document management." Thesis, Kansas State University, 1985. http://hdl.handle.net/2097/9868.
Full textWang, Chao Gilbert Juan E. "CSSE document management system implementation and usability evaluation /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/WANG_CHAO_41.pdf.
Full textAndric, Mirjana Andrija. "Exploiting metadata links to support information retrieval in document management systems." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427370.
Full textYozgyur, Kadir. "A Requirements Elicitation Tool for Document Migration of Enterprise Content Management Systems." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-249506.
Full textZois, Georgios. "Algorithmic problems in power management of computing systems." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066462/document.
Full textThis thesis is focused on energy-efficient algorithms for job scheduling problems on speed-scalable processors, as well as on processors operating under a thermal and cooling mechanism, where, for a given budget of energy or a thermal threshold, the goal is to optimize a Quality of Service criterion. A part of our research concerns scheduling problems arising in large-data processing environments. In this context, we focus on the MapReduce paradigm and we consider problems of energy-efficient scheduling on multiple speed-scalable processors as well as classical scheduling on a set of unrelated processors.First, we propose complexity results, optimal and constant competitive algorithms for different energy-aware variants of the problem of minimizing the maximum lateness of a set of jobs on a single speed-scalable processor. Then, we consider energy-aware MapReduce scheduling as well as classical MapReduce scheduling (where energy is not our concern) on unrelated processors, where the goal is to minimize the total weighted completion time of a set of MapReduce jobs. We study special cases and generalizations of both problems and propose constant approximation algorithms. Finally, we study temperature-aware scheduling on a single processor that operates under a strict thermal threshold, where each job has its own heat contribution and the goal is to maximize the schedule's throughput. We consider the case of unit-length jobs with a common deadline and we study the approximability of the problem
Hughes, Patricia D. "Analysis, selection, and implementation of a case management system for local city government attorney's office." [Denver, Colo.] : Regis University, 2007. http://165.236.235.140/lib/PHughes2007.pdf.
Full textShuai, Wenjing. "Management of electric vehicle systems with self-interested actors." Thesis, Télécom Bretagne, 2016. http://www.theses.fr/2016TELB0408/document.
Full textElectric Vehicles (EVs), as their penetration increases, are not only challenging the sustainability of the power grid, but also stimulating and promoting its upgrading. Indeed, EVs can actively reinforce the development of the Smart Grid if their charging processes are properly coordinated through two-way communications, possibly benefiting all types of actors. Because grid systems involve a large number of actors with nonaligned objectives, we focus on the economic and incentive aspects, where each actor behaves in its own interest. We indeed believe that the market structure will directly impact the actors' behaviors, and as a result the total benefits that the presence of EVs can earn the society, hence the need for a careful design. The thesis first provides an overview of economic models considering unidirectional energy flows, but also bidirectional energy flows, i.e., with EVs temporarily providing energy to the grid. We describe and compare the main approaches, summarize the requirements on the supporting communication systems, and propose a classification to highlight the most important results and lacks. We propose to use the recharging processes of EVs to provide regulation to the grid by varying the instantaneous recharging power. We provide an economic analysis of the incentives at play, including the EV owners point of view (longer recharging durations and impact on battery lifetime versus cheaper energy) and the aggregator point of view (revenues from recharging versus regulation gains). In particular, we analyze the range of regulation rewards such that offering a regulation-oriented recharging benefits both EV owners and the aggregator. After that, we split the monopolistic aggregator into two competing entities. We model a non-cooperative game between them and examine the outcomes at the Nash equilibrium, in terms of user welfare, station revenue and electricity prices. As expected, competing stations offer users with lower prices than the monopolistic revenue-maximizing aggregator do. Furthermore, the amount of regulation service increases significantly than that in the monopolistic case. Considering the possibility of discharging, we propose an approach close to Vehicle-to-Grid, where EVs can give back some energy from their batteries during peak times. But we also use EVs as energy transporters, by taking their energy where it is consumed. A typical example is a shopping mall with energy needs, benefiting from customers coming and going to alleviate its grid-based consumption, while EV owners make profits by reselling energy bought at off-peak periods. Based on a simple model for EV mobility, energy storage, and electricity pricing, we quantify the reduction in energy costs for the EV-supported system, and investigate the conditions for this scenario to be viable
Raymond, Scott P. "Operation and Maintenance Support Information (OMSI) creation, management, and repurposing with XML." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FRaymond.pdf.
Full textThesis Advisor(s): Daniel R. Dolk, Gordon H. Bradley. Includes bibliographical references (p. 119-120, 121-122). Also available online.
Hutchings, Stacy. "An End-User Development Approach to Building Customizable Web-Based Document Workflow Management Systems." UNF Digital Commons, 2005. http://digitalcommons.unf.edu/etd/263.
Full textBarrère, Cambrún Martín. "Vulnerability management for safe configurations in autonomic networks and systems." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0048/document.
Full textOver the last years, the massive deployment of computing devices over disparate interconnected infrastructures has dramatically increased the complexity of network management. Autonomic computing has emerged as a novel paradigm to cope with this challenging reality. By specifying high-level objectives, autonomic computing aims at delegating management activities to the networks themselves. However, when changes are performed by administrators and self-governed entities, vulnerable configurations may be unknowingly introduced. Nowadays, vulnerabilities constitute the main entry point for security attacks. Therefore, vulnerability management mechanisms are vital to ensure safe configurations, and with them, the survivability of any autonomic environment. This thesis targets the design and development of novel autonomous mechanisms for dealing with vulnerabilities, in order to increase the security of autonomic networks and systems. We first present a comprehensive state of the art in autonomic computing and vulnerability management. Afterwards, we present our contributions which include autonomic assessment strategies for device-based vulnerabilities and extensions in several dimensions, namely, distributed vulnerabilities (spatial), past hidden vulnerable states (temporal), and mobile security assessment (technological). In addition, we present vulnerability remediation approaches able to autonomously bring networks and systems into secure states. The scientific approaches presented in this thesis have been largely validated by an extensive set of experiments which are also discussed in this manuscript
Onifade, Olufade Falade Williams. "A model for information risks management in economic intelligent systems." Thesis, Nancy 2, 2010. http://www.theses.fr/2010NAN21007/document.
Full textSubjective estimation and perception, complexity of the environment under study, interaction amongst subsystems, lack of precise data, missing data, limited information processing capacity and ambiguity in natural languages are major forms of uncertainty facing Decision Makers in the process of delivering strategic decisions in economic intelligent systems. This study employs soft computing paradigm to capture and analyze uncertainty based on information risk factors via our proposed knowledge reconciliation model based on ontology and the FuzzyWatch model. We modeled the process of decision making from the point of problem definition to decision delivery (translation credibility) and include intangible factors with the fish-bone architecture. Ontological framework for Knowledge Reconciliation was developed to facilitate knowledge sharing and reuse among both human and computer agents while intangible factors, emotions and ambiguities in natural languages were captured with fuzzy membership function. We extended this operation with fuzzy that is – what ontology captures is interpreted by fuzzy techniques (FuzzOntology). The fuzzy match relation for information retrieval tagged “FuzzyWatch” improves the information search result thus reducing the risk of missing data which is of grave consequence in Economic Intelligence process. FuzzOntological model facilitates a flexible means of capturing intangible and uncertain factors as a means of resolving the ambiguity in natural languages. FuzzyWatch assists in reducing missing data problems. Future decisional process will contend with lesser information retrieval risks in Economic Intelligence process using this model
Banik, Bijit Kumar. "Sewer systems management : illicit intrusion identification and optimal sensor placement." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1112/document.
Full textImproper wastewater management could result in significant damage to the treatment plants and the final recipient aquatic ecosystem. In the past, wastewater management did not get much attention from different stakeholders. However, recently a paradigm shift of wastewater and storm water management is evolving from a simple sanitary and flood control, respectively, to a whole environmental protection function. A very important aspect of the sewer systems management policy is to detect and eliminate an illicit intrusion. This PhD research is consisting of two main pillars. In the first pillar, the issues regarding the identification of an illicit intrusion in a sewer system have been addressed, proposing a source identification (SI) methodology. In the second pillar, different innovative methodologies have been proposed to find the optimal placement of a limited number of sensors in the sewer system. In the thesis, the SI is solved through a simulation-optimization model, combining the hydraulic and quality simulation tool Storm Water Management Model (SWMM) with a genetic algorithm code (GALib) as an optimizer. It requires online measurements from some sensors placed on the network. The SWMM does not have the programmer's toolkit. To integrate the SWMM simulator with the proposed automated SI methodology, an ad-hoc toolkit has been developed. A pre-screening procedure, based on the pollution matrix concept and considering the topology of sewers, has been implemented to reduce the computational effort. The SI methodology has been tested on two different networks. One is a literature network taken from the SWMM example manual while the other is one sub-catchment of the real sewer network of Massa Lubrense, a town located near Naples, Italy. The results show that the pre-screening procedure reduces the computational effort significantly, and it has a crucial role in large systems. In investigating the performances of the SI methodology, its sensitivity respect to the genetic algorithm parameters has been verified. Moreover, the influence of the uncertainty of the inflows values and the measurement errors on the results have been investigated. Another core problem associated with the water quality monitoring of sewers is represented by the optimal placement of a limited number of sensors for the early detection of an illicit source. In the thesis, the sensor location is expressed as a single or multi-objective optimization problem and the SWMM is used to extract the water quality data. Different formulations have been proposed and tested. First, an Information Theory (IT) based multi-objective optimization methodology is presented. The IT approach considers two objectives: the Joint entropy, the information content of a set of sensors, which is kept as high as possible; the Total correlation, a measure of redundancy, which is kept as low as possible. In the second multi-objective approach Detection time, to be minimized, and Reliability, to be maximized, are considered. In both cases, the multi-objective problems are solved using the Non-Dominating Sorting Genetic Algorithm-II (NSGA-II). As a third alternative, a single objective Greedy based optimization tool has been tested. The previously considered objectives are also used with different combinations. The Massa Lubrense sewer network is used to test the performances of various proposed procedures. A normalized comparison among all approaches shows that the Greedy based approach could be a handy alternative for optimizing the sensor locations in sewer systems
Abou, Rjeily Yves. "Management and sustainability of urban drainage systems within smart cities." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10085/document.
Full textThis work presents the Real Time Control (RTC) of Urban Drainage Systems (UDS) within smart cities. RTC requires to understand the UDS operation and to perform simulations on measured, forecasted and synthetic events. Therefore, a Real Time Monitoring system (RTM) was implemented on the experimental site, and combined to a simulation model. A model auto-calibration process and hydraulic boundary conditions forecast system were developed, in order to simulate the hydrologic-hydraulic response. Aiming to protect the citizens and mitigate flooding consequences, the RTC was composed of a flooding forecast system followed by a dynamic management strategy. The proposed concept and methodologies were applied and evaluated on the Lille 1 University Campus, within the SunRise project. RTM was found very helpful in understanding the system operation and calibrating the simulation model. Genetic Algorithm followed by Pattern Search formed an effective auto-calibration procedure for the simulation model. NARX Neural Network was developed and validated for forecasting hydraulic boundary conditions. Once understanding the UDS operations, the RTC was developed. NARX Neural Network was found capable to forecast flooding events. A dynamic management for increasing a tank retention capacity, was studied based on calculating a Valve State Schedule, and results were satisfying by using Genetic Algorithm and a modified form of Artificial Bee Colony, as optimization methods. A qualitative management was also proposed and tested for verifying its potential in reducing flooding volumes
Gibbs, Edward. "A business plan to launch a document management product in the United Kingdom." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/4958.
Full textENGLISH ABSTRACT: A Document Management System (DMS) can help businesses speed-up as well as reduce the number of mundane and repetitive tasks relating to documents. These benefits can assist management cut costs, reduce errors, automate frequently performed tasks as well as store information electronically in a safe and accessible way. Making IT Simple (the business) is a start-up business that has entered into a partnership agreement with INVU, Europe's fastest growing DMS Software developer (INVU, 2008). This agreement allows the business to sell INVU software without restriction by volume or geography to all sectors of industry. INVU products are designed to make business administration, and especially managing documents a simple and efficient process. These two principle product features support the business' objectives and marketing push by delivering easy-to-use software that helps customers reduce costs by speeding-up as well as reduce the number of daily administrative tasks performed using documents. In order to establish which market sector to target, the Directors conducted an industry analysis (Appendix I) which has identified opportunities in the farming and agricultural Sector. The three primary reasons are: 1) Sustainable sector growth of 30% per annum (UK Agriculture, 2007), 2) no known DMS competition within Farming and 3) the Directors have an established Network and detailed knowledge of the sector. Although farming and agriculture will be the main focus of marketing activity and communication, other industries, such as property letting agencies, are also seen as future opportunities for the business. Target Market and Projections Market Research is based upon 138 questionnaire responses that have enabled the Directors to develop a product package which combines the product, a DMS license and software, together with the necessary hardware and maintenance support sufficient to satisfy the target market's needs. The target market is defined as a farm business, predominantly farming crops or cattle and/or sheep from between 41 and 80 hectares of productive land. It has up to 20 full time employees, half of whom are involved in the business' administration. This admin comprises mainly of financial accounts and Government Department returns which are processed on as many as two computers which have email, Microsoft Office and accounting software packages loaded on. For security and access the target market store their records in filing cabinets for up to 15 years, mostly in paper form. A priority for business' administration within this market is the simplicity and easy access of its records and with all records being in one place. The sales forecasts of 7, 16 and 30 units over the first three years 2009, 2010 and 2011 respectively are deemed achievable by the Directors, having received reassurance from both formal interviews (Radley, 2008) and conversations with potential customers. The business sees their target market strategy and their lean cost base as being their competitive advantage together with the impression that none of INVU's DMS competitors are currently focussed upon the agriculture sector. This gives the business a potential first mover advantage which will be supported by leveraging the marketing efforts and the existing network of contacts to deliver the specifically designed sales process for the target market. The suite of products, which are leased by the customer over 36 months, cost £15,016 and have a Gross Profit of 58%. This gross profit then funds the running and maintenance of the support service provided by the company. Return on Equity over the 3 years of the Business Plan is strong at 60% given that there is a loss of £50,000 in Year 1. Year two generates a small profit of £24,000 with a healthy £64,000 in Year 3 onwards. Return on sales is 10% in year 2 growing to 14% in year 3. Break even point is in July 2011 (month 31) with the business cash positive in August 2010 (month 20). The financial risks are calculated as low due to the lease funding providing cash within 14 days of a signed document, plus there is no cash risk as the requirement to hold inventory is negligible. The balance sheet requires equity funding of £40,000 which is provided by the two directors at £20,000 each, plus a 60 month working-capital bank loan which is forecast to be repaid on month 25. There are 46,000 farms in UK so, in this market sector alone there are potentially 9,200 (20%) sales presentations to be completed based upon the market survey data. On projected performance this would currently take the business 460 months to complete. The business case shows an improving performance month on month based upon an improvement in sales skills, product portfolio and brand awareness. The two employees Edward Gibbs and Mathew Easterbrook, both of whom are Directors, have each invested £20,000 in equity in order to start-up the business. They have 28 years of management experience between them and offer complementing specialities in the IT, sales, farming and finance areas. Their business objectives are to generate cash and satisfy customer needs by selling products at the right price with a sustainable gross profit margin whilst being commercially aggressive on costs. Their simple and equitable company structure reflects their excellent relationship and the balance of power is shared equally. The product is a compliment of hardware, software and support service that is tailored to meet a customer's needs (Table 1).
AFRIKAANSE OPSOMMING: 'n Dokumentbestuurstelsel (DBS) kan organisasies help om meer effektief sake te doen en om die aantal eenvoudige en herhalende take met die hantering van dokumente te verminder. Hierdie voordele kan bestuur help om koste te verminder, foute te verminder, gereelde take te outomatiseer en ook om inligting elektronies in 'n veilige en maklik bereikbare plek te stoor. Making IT simple (die onderneming) is 'n nuwe onderneming wat in 'n vennootskap ooreenkoms met INVU, Europa se snel groeiendste DBS sagteware verskaffer, aangegaan het. Hierdie ooreenkoms laat die ondememing toe om INVU sagteware te verkoop in alle industriee met geen bepreking op volumes of geografiese areas nie. INVU produkte is ontwerp om besigheid administrasie, en spesifiek die bestuur van dokumente, 'n eenvoudige en effektiewe proses te maak. Hierdie twee beginsels ondersteun die onderneming se doelwitte en bemarking deur die lewering van eenvoudig-om-te-gebruik sagteware wat kliente help om kostes te verlaag deur vinniger prosesse sowel as verminderde daaglikse roetine administratiewe dokumentering take. Ten einde die marksegment wat geteiken moet word te bepaal het die direkteure 'n industrie analise (Aanhangsel I) gedoen wat geleenthede in die boerdery en landbou sektore uitgewys het. Die drie primere redes is: 1) Substansiele sektor groei van 30% per jaar (UK Agriculture, 2007), 2) geen bestaande DBS wat tans aktief in die mark is nie en 3) die direkteure het 'n gevestigde netwerk en detail kennis van die sektor. Alhoewel boerdery en landbou die hooffokus van die bemarkings en kommunikasie aktiwiteite gaan wees sal ander industriee, soos eiendoms en verhurings agentskappe, ook gesien word as toekoms geleenthede vir die onderneming. Marknavorsing is gebaseer op 138 voltooide vraelyste wat die direkteure in staat gestel het om 'n produk pakket bestaande uit 'n DBS lisensie en sagteware saam met die nodige hardeware en ondersteunings saam te bondel, ten einde aan die mark se behoefte te voorsien. Die teikenmark is gedefinieer as boerdery ondernemings wat primer boer met gewasse en/of skape op tussen 41 en 80 hektaar produktiewe landbougrond. Die boerdery het ongeveer 20 voltydse werknemers waarvan die helfte met die onderneming se administrasie te doen het. Die administrasie bestaan meestal uit finansiele take en Regerings Departemente se verslae wat geprosesseer word op tot twee rekenaars met toegang tot Microsoft Office en 'n rekenkundige sagteware pakket. Vir sekuriteit en maklike toegang tot hulle dokumente stoor die tipe ondernemings hulle dokumente in liasseerkabinette vir tot 15 jaar, meestal in papier formaat. 'n Prioriteit vir ondernemings se administrasie binne die teikenmark is eenvoud en maklike toegang tot hulle dokumente, asook die sentrale berging van dokumente op een spesifieke plek. Die verkoops vooruitskattings vir 7, 12 en 30 eenhede oor die eerste drie jare 2009, 2010 en 2011, word gesien as realisties en bereikbaar deur die direkteure na aanleiding van formele onderhoude (Radley, 2008) en gesprekke met potensiele kliente. Die onderneming sien hulle teikenmark strategie en hulle lae koste struktuur as hulle kompeterende voordeel tesame met die feite dat geen van INVU se DBS kompeteerders huidiglik op die landbou sektor fokus nie. Die gee die ondememing die potensiele eerstetoetreder voordeel in die landbou industrie. Dit sal ondersteun word deur die hefboom effek van die bemarkings pogings komende uit die bestaande netwerk van kontakte om gefokusde verkoopsprosesse in die teikenmark uit te voer. Die suite van produkte, wat gehuur word deur die kliente oor 'n tydperk van 36 maande, kos £15,016 en het 'n bruto wins marge van 58%. Hierdie bruto wins befonds die bedryf en ondersteuningsdienste van die onderneming. Die opbrengs op ekwiteit oor die drie jaar tydperk van die besigheidsplan is stewig op 60% gegewe dat daar 'n verlies van £50,000 in Jaar 1 plaasvind. Jaar 2 genereer 'n klein wins van £24,000 met 'n stewige wins van £64,000 in Jaar 3. Opbrengs op verkope is 10% in jaar 2 en groei tot 14% in jaar 3. Die gelykbreekpunt is Julie 2011 (maand 31) en die onderneming is kontant positief vanaf Augustus 2010 (maand 20). Die finansiele risiko is laag as gevolg van die huur inkomste wat kontant binne 14 dae na die teken van 'n ooreenkoms genereer en ook omdat daar geen kontant risiko is met die dra van voorraad nie. Die balansstaat ekwiteit benodig 'n aanvangsbelegging van £40,000 wat voorsien word deur die twee direkteure teen £20,000 elk, saam met 'n 60 maande werkskapitaal bank lening wat geprojekteer word om volopbetaal te wees teen maand 25. Daar is tans 46,000 plase in die VK en dus, in die marksegrnent alleen, 9,200 (20%) verkoops voorleggings gebaseer op die markanalise data. Op die geprojekteerde werkstempo sal dit ongeveer 460 maande neem om te voltooi. Die besigheidmodel toon groeiende verrigting op 'n maand tot maand basis gebaseer op 'n verbetering in verkooptegniek, produk portefeulje en produk kennis. Die twee werknemers Edward Gibbs en Mathew Easterbrook, wat ook die direkteure is, het elk £20,000 aanvangskapitaal geinvesteer ten einde die onderneming op die been te bring. Hulle het 28 jaar bestuurservaring en het komplimenterende vermoens in die IT, verkope, boerdery en finansiele areas. Hulle besigheid doelwit is om kontant te genereer en kliente se behoeftes te bevredig deur die verkope van produkte teen die korrekte prys teen 'n volhoubare bruto wins. Hulle eenvoudige maatskappy struktuur reflekteer hulle uitstekende verhouding en die magsbalanse is eweredig versprei. Die aanbod aan die mark is 'n komplimenterende suite van hardeware, sagteware en steundienste wat aangepas word om aan 'n klient se behoeftes te voldoen (Tabel 1).
Broadbent, Robert Emer. "A Functional Framework for Content Management." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1737.
Full textRamirez, Rivera Victor Manuel. "Energy management of lossy multi-port to fuel cell-based systems." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112087/document.
Full textEfficient regulation of the energy transfer between generating, storage and load subsystems is a topic of current practical interest. A new strategy to achieve this objective, together with its corresponding power electronics implementation, was recently proposed in this thesis work. The device is called dynamic energy router (DER) because, in contrast with current practice, the regulation of the direction and rate of change of the power flow is done without relying on steady–state considerations. A key assumption for the correct operation of the DER is that dissipation in the system is negligible. Unfortunately, in the presence of dissipation the original DER ceases to be operational. In this thesis a new DER that takes into account the presence of losses is proposed. Simulation and experimental evidence of the performance improvement with the new DER are presented. As a complement of this work a global convergent estimator of parameters of Polymer Exchange Membrane Fuel Cell (PEMFC) was designing by using the principles or “Immersion and Invariance” recently reported in control theory
Mezghani, Emna. "Towards Autonomic and Cognitive IoT Systems, Application to Patients’ Treatments Management." Thesis, Toulouse, INSA, 2016. http://www.theses.fr/2016ISAT0016/document.
Full textIn this thesis, we propose a collaborative model driven methodology for designing Autonomic Cognitive IoT systems to deal with IoT design complexity. We defined within this methodology a set of autonomic cognitive design patterns that aim at (1) delineating the dynamic coordination of the autonomic processes to deal with the system's context changeability and requirements evolution at run-time, and (2) adding cognitive abilities to IoT systems to understand big data and generate new insights. To address challenges related to big data and scalability, we propose a generic semantic big data platform that aims at integrating heterogeneous distributed data sources deployed on the cloud and generating knowledge that will be exposed as a service (Knowledge as a Service--KaaS). As an application of the proposed contributions, we instantiated and combined a set of patterns for the development of prescriptive cognitive system for the patient treatment management. Thus, we elaborated two ontological models describing the wearable devices and the patient context as well as the medical knowledge for decision-making. The proposed system is evaluated from the clinical prescriptive through collaborating with medical experts, and from the performance perspective through deploying the system within the KaaS following different configurations
Kwatsha, Ntombizandile. "Factors affecting the implementation of an electronic document and records management system." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5152.
Full textENGLISH ABSTRACT: The past decade has seen a huge increase in the implementation and use of Electronic document and records management systems (EDRMS) in many public spheres. The South African government, in this case the Presidency, has now also adopted this system to comply with current legislation requiring government institutions to replace paper with electronic media as the preferred way of conducting their official business. In general, and as is evident from the available literature, it seems that Government organisations have been lagging behind in this regard. The failure to reap the expected benefits from this step by government institutions such as the Presidency forms the basis for this investigation, which examines the failures and successes in the implementation of an EDRMS and the factors affecting this process. The study used triangulation approach in order to arrive at a more reliable conclusion. Literature research has been used as a main data collection method for this study. It also serves as a basis for the approaches to subject matter that have been adopted. Data was also collected by conducting semi –structured interviews with government institutions, including the subject of this research, that have implemented EDRMS. The critical factors that have had an effect on the implementation of EDRMS were found to be of a strategic, social and technical nature. The study also found similarities in the factors affecting EDRMS implementation within government and identifies the need for further research focusing on how these factors differ between various types of organisations.
AFRIKAANSE OPSOMMING: Die afgelope dekade was daar ‘n ontsaglike toename in die instelling en toepassing van elektroniese dokument- en rekordbestuurstelsels (EDRMS) op talle openbare terreine. Die Suid-Afrikaanse regering, in hierdie geval die kantoor van die Staatspresident, het nou ook hierdie stelsel aangeneem om te voldoen aan huidige wetgewing wat staatsinstellings verplig om papier te vervang met elektroniese media as die aanbevole manier om hulle amptelike besigheid te bedryf. Oor die algemeen, en soos dit ook blyk uit die beskikbare bronne, lyk dit egter asof regeringsinstansies agter geraak het wat dit betref. Die feit dat die verwagte voordele van hierdie stap nie deur staatsinstansies soos die Presidensie benut is nie, vorm die grondslag vir hierdie ondersoek, wat die prestasies en weiering wat gepaard gaan met die instelling van `n EDRMS en die faktore wat hierdie proses affekteer van nader beskou. Navorsing van die literatuur is gebruik as die belangrikse datainsamelingmetode vir hierdie ondersoek. Dit dien ook as die basis vir die manier waarop die onderwerpmateriaal benader is. Data is ook ingesamel van staatsinstansies wat `n EDRMS ingestel het, soos die instansie wat hier bestudeer word. Die kritiese faktore wat ‘n invloed gehad het op die instel van `n EDRMS het geblyk van `n strategiese, sosiale en tegnies aard te wees. Die ondersoek het ook ooreenkomste gevind in die faktore wat die instel van `n EDRMS in die regering affekteer en indentifiseer ook die behoefte aan verdere navorsing wat gerig is op hoe hierdie faktore van organisasie tot organisasie verskil.
Gama, Pinheiro Vinicius. "The management of multiple submissions in parallel systems : the fair scheduling approach." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENM042/document.
Full textWe study the problem of scheduling in parallel and distributedsystems with multiple users. New platforms for parallel and distributedcomputing offers very large power which allows to contemplate the resolution ofcomplex interactive applications. Nowadays, it is still difficult to use thispower efficiently due to lack of resource management tools. The work done inthis thesis lies in this context: to analyse and develop efficient algorithmsfor manage computing resources shared among multiple users. We analyzescenarios with many submissions issued from multiple users over time. Thesesubmissions contain one or more jobs and the set of submissions are organizedin successive campaigns. Any job from a campaign can not start until allthe jobs from the previous campaign are completed. Each user is interested inminimizing the sum of flow times of the campaigns.In the first part of this work, we define a theoretical model for Campaign Scheduling under restrictive assumptions andwe show that, in the general case, it is NP-hard. For the single-user case, we show that an$ho$-approximation scheduling algorithm for the (classic) parallel jobscheduling problem is also an $ho$-approximation for the Campaign Schedulingproblem. For the general case with $k$ users, we establish a fairness criteriainspired by time sharing. Then, we propose FairCamp, a scheduling algorithm whichuses campaign deadlines to achieve fairness among users between consecutivecampaigns. We prove that FairCamp increases the flow time of each user by afactor of at most $kho$ compared with a machine dedicated to the user. Wealso prove that FairCamp is an $ho$-approximation algorithm for the maximumstretch.We compare FairCamp to {em First-Come-First-Served} (FCFS) by simulation. We showthat, compared with FCFS, FairCamp reduces the maximum stretch by up to $3.4$times. The difference is significant in systems used by many ($k>5$) users.Our results show that, rather than just individual, independent jobs, campaignsof jobs can be handled by the scheduler efficiently and fairly
Reynolds, Linda K. "A framework for the management of evolving requirements in software systems supporting network-centric warfare." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Jun%5FReynolds.pdf.
Full textChava, Nalini. "Administrative reporting for a hospital document scanning system." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014839.
Full textDepartment of Computer Science
Sara, Hanna. "Analysis and valorization of new thermal management systems for a vehicle powertrain application." Thesis, Ecole centrale de Nantes, 2017. http://www.theses.fr/2017ECDN0019/document.
Full textThermal management proved itself in improving the fuel efficiency of the engine. Nowadays, automotive companies tend to apply different strategies to answer the greenhouse severe laws. The PhD aim is to valorize and analyze the different thermal management strategies with numerical simulations over different driving cycles and ambient conditions. A 1-D simulation code of the engine and its hydraulic circuits were built using GT-Suite. Four known driving cycles were chosen: NEDC, WLTC, AH and AU. In addition, an in-house developed driving cycle was introduced. An energy balance made over the different stages of the driving cycles underlines the importance of the heat storage and the exhaust heat recovery strategies.Heat recovery was applied over the coolant and the oil at ambient temperatures of -7°C and 20°C. Hot coolant storage and hot oil storage led to improve the coolant and lubricant initial temperatures respectively. Different configurations (total of 7) were proposed and studied. A multifunctional oil sump was introduced. Important fuel consumption savings were obtained. Exhaust heat recovery was then valorized. Heat exchanger was characterized over experimental setup then added to the engine model. Indirect and direct heating of the lubricant as well as both strategies back to back were tested. Remarkable friction reduction and fuel savings were obtained. Special configuration was proposed to control the lubricant high temperature instead of the bypass on the exhaust line. The study ended by valorizing minor strategies as the oil’s grade influence, the engine insulation, high temperature set point …
Ben, Alaya Mahdi. "Towards interoperability, self-management, and scalability for scalability for machine-to-machine systems." Thesis, Toulouse, INSA, 2015. http://www.theses.fr/2015ISAT0052/document.
Full textMachine-to-Machine (M2M) is one of the main features of Internet of Things (IoT). It is a phenomenon that has been proceeding quietly in the background, and it is coming into the surface, where explosion of usage scenarios in businesses will happen. Sensors, actuators, tags, vehicles, and intelligent things all have the ability to communicate. The number of M2M connections is continuously increasing, and it has been predicted to see billions of machines interconnected in a near future. M2M applications provide advantages in various domains from smart cities, factories of the future, connected cars, home automation, e-health to precision agriculture. This fast-growing ecosystem is leading M2M towards a promising future. However, M2M market expansion opportunities are not straightforward. A set of challenges should be overcome to enable M2M mass-scale deployment across various industries including interoperability, complexity, and scalability issues. Currently, the M2M market is suffering from a high vertical fragmentation affecting the majority of business sectors. In fact, various vendor-specific M2M solutions have been designed independently for specific applications, which led to serious interoperability issues. To address this challenge, we designed, implemented, and experimented with the OM2M platform offering a flexible and extensible operational architecture for M2M interoperability compliant with the SmartM2M standard. To support constrained environments, we proposed an efficient naming convention relying on a non-hierarchical resource structure to reduce the payload size. To reduce the semantic gap between applications and machines, we proposed the IoT-O ontology for an effective semantic interoperability. IoT-O consists of five main parts, which are sensor, actuator, observation, actuation and service models and aims to quickly converge to a common IoT vocabulary. An interoperable M2M service platform enables one to interconnect heterogeneous devices that are widely distributed and frequently evolving according to their environment changes. Keeping M2M systems alive is costly in terms of time and money. To address this challenge, we designed, implemented, and integrated the FRAMESELF framework to retrofit self-management capabilities in M2M systems based on the autonomic computing paradigm. Extending the MAPE-K reference architecture model, FRAMESELF enables one to dynamically adapt the OM2M system behavior according to high level policies how the environment changes. We defined a set of semantic rules for reasoning about the IoT-O ontology as a knowledge model. Our goal is to enable automatic discovery of machines and applications through dynamic reconfiguration of resource architectures. Interoperability and self-management pave the way to mass-scale deployment of M2M devices. However, current M2M systems rely on current internet infrastructure, which was never designed to address such requirements, thus raising new requirements in term of scalability. To address this challenge, we designed, simulated and validated the OSCL overlay approach, a new M2M meshed network topology as an alternative to the current centralized approach. OSCL relies on the Named Data Networking (NDN) technique and supports multi-hop communication and distributed caching 5 to optimize networking and enhance data dissemination. We developed the OSCLsim simulator to validate the proposed approach. Finally, a theoretical model based on random graphs is formulated to describe the evolution and robustness of the proposed system
Paiva, Melo Marin Regina. "Enhancing privacy protection in social network systems through decentralization and policy conflict management." Thesis, CentraleSupélec, 2015. http://www.theses.fr/2015SUPL0020/document.
Full textIn Social Network Systems (SNSs), the sharing of information leads to many privacy concerns about potential abuses of personal information. Users’ control over information shared with the SNS provider and with other users could be improved in SNSs through the decentralization of personal data, and the proper management of policy conflicts. Inspired by the decentralization approach, the firrst contribution of this thesis is the proposal of SNS design properties relevant to privacy when considered along a gradation of decentralization. These properties are organized in a multi-criteria analysis grid, designed to analyze and compare SNSs. The application of a lattice structure on this grid allows to evaluate, classify and visualize different SNSs within a partial hierarchy. While decentralization solves issues involving the SNS provider, privacy policies play a leading role in the protection of unauthorized data access from other users. The second contribution of this thesis consists in the introduction of the concept of equity in the context of policy conflict management. An algorithm to maintain equity between users in SNSs is introduced to solve conflicts that may arise between the privacy policies of several users, avoiding that some users take advantage over others. The evaluation shows that the equity approach introduced in this thesis leads to better results than classical conflict resolution strategies, reducing existing inequities in terms of policy enforcement
Lales, Efstratios. "The effects of introducing the Electronic Document and Record Management Information System “Irida” in the public sector of Greece. A case study." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-105648.
Full textXue, Rui. "Improving Cooperation between Systems Engineers and Project Managers in Engineering Projects - Towards the alignment of Systems Engineering and Project Management standards and guides." Thesis, Toulouse, INSA, 2016. http://www.theses.fr/2016ISAT0018/document.
Full textIn a highly competitive economic context, companies need to improve their performance in entire life cycle of a product. It is often found that company organization leads to segregation between systems engineering and project management, with the result that decision-making is sometimes misguided and may compromise project execution, whereas, although they each have specific visions and targets, these disciplines are nonetheless intended to serve a common objective, which is to satisfy the customer. So it is an important issue to facilitate their adoption and their joint deployment within the company, in order to improve decision-making in engineering projects. The proposal of the thesis involves bringing systems engineering and project management closer together in order to help both systems engineers and project managers assess the project progress. Based on this assessment, they can adjust the project policy dynamically through the project life cycle. In this thesis, we first harmonize the standards and guides from systems engineering and project management domains and define an integrated process groups organized into 3 groups of processes. Then we identify a set of key indicators related to these process groups, indicators are then valuated and give the evaluation of the indicator based on the analytic hierarchy process method to integrate the views of systems engineers and project managers in an additional way. On the basis of these indicators, we use the critical path method and earned value management method to assess the project progress values and define two project indexes to assess and insight the project progress easier
Moro, Puppi Wanderley Gregory. "A framework for facilitating the development of systems of systems." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2425/document.
Full textBuilding Systems of Systems (SoS) has gained momentum in various domains. Today, complex applications require to let several systems developed independently cooperate, leading to the moniker of SoS. Despite such popularity, no consensus has yet been reached about a precise definition of what SoS are. Moreover, the crux of the matter is that most applications are still handcrafted, being developed in an ad hoc fashion, i.e., freely and without being constrained by a predefined structure. Handcrafting SoS is an Herculean task for architects, requiring them to create an interwoven set of connections among SoS constituent systems for allowing cooperation. Because of the large number of interconnections, the complexity and tight coupling increase in SoS, and their evolution becomes more difficult, requiring substantial efforts from architects. To sever the Gordian knot faced by SoS architects, we propose in this research a generic framework for facilitating the development of SoS from a systems engineering perspective. Our approach is based on a novel architecture we call MBA for Memory-Broker-Agent. To test our framework we built an SoS for developing software collaboratively. Results show that our approach reduces the difficulty and effort for developing a SoS. Based on such results, we created an original method for building a SoS using our framework. We tested the potential of our method along with the generic features of our framework, by building a new SoS in the Health Care domain successfully and more accurately
Sridharan, Aswinkumar. "Adaptive and intelligent memory systems." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S140/document.
Full textIn this thesis, we have focused on addressing interference at the shared memory-hierarchy resources: last level cache and off-chip memory access in the context of large-scale multicore systems. Towards this end, the first work focused on shared last level caches, where the number of applications sharing the cache could exceed the associativity of the cache. To manage caches in such situations, our solution estimates the cache footprint of applications to approximate how well they could utilize the cache. Quantitative estimate of cache utility explicitly allows enforcing different priorities across applications. The second part brings in prefetch awareness in cache management. In particular, we observe prefetched cache blocks to exhibit good reuse behavior in the context of larger caches. Our third work focuses on addressing interference between on-demand and prefetch requests at the shared off-chip memory access. This work is based on two fundamental observations of the fraction of prefetch requests generated and its correlation with prefetch usefulness and prefetcher-caused interference. Altogether, two observations lead to control the flow of prefetch requests between LLC and off-chip memory
Manikas, Konstantinos. "Records Management and Electronic Records Management Opportunities and Limitations : A case study in Greek companies." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45536.
Full textBergey, Jean-Luc. "Élaborations textuelles, genres discursifs et apprentissages linguistiques médiés par les Learning Management Systems (plateformes de formation)." Thesis, Bordeaux 3, 2016. http://www.theses.fr/2016BOR30020/document.
Full textMy thesis is positioned within the theoretical framework of cognitive and speaker-oriented linguistics; it also relies on e-learning and ICT in the sections on applications and development. This project endeavours to combine these two aspects in the field of language teaching, especially with a view to developing tools for language learning. This study firstly aims at analysing the different forms of language activity through the description and analysis of what is called "discursive genres" and, secondly, it seeks to bring to light styles in the ways of learning which are associated with learners’ cognitive profiles through the development of specific software tools for language learning.The identification of these learning styles (or cognitive profiles) should enable us to define learning strategies – processes that make learners more autonomous as cognitive subjects – in other words, they become the agent of their own learning. The backdrop for my analysis is a neo-vygotskian conception of learning and in particular one of the concepts it provides us with: collaboration.For this purpose, the use of a learning platform, known in English as 'Learning Management System' and of various dedicated software tools associated with it (glossary, mind mapping, collaborative software) gives me the possibility to experiment sequences of language micro-activities aimed at building a comprehensive language competence by the learner (which is a positioning of the student as an institutional actor). In addition, as the use of discourse types grounds this thesis in a functional type analysis such as 'Task Based Learning' (Rod Ellis), it will allow a theoretical evaluation of CEFRL (Common European Framework of Reference for Languages), which is the current reference in the didactics of foreign or second language teaching
Nabitz, Udo Werner Holmes A. "Quality management in health care empirical studies in addiction treatment services aligned to the EFQM excellence model /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2006. http://dare.uva.nl/document/90407.
Full textElkern, Kenneth F. "Effective management of classified documents using the Library Document System." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA286021.
Full textTensmyr, Tobias. "Vacation Exchange Management : Investigating the Vacation Exchange Process at Karlstad Municipality Through Document Analysis, Interviews, and Task Analysis to Elicit System Requirements." Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-77988.
Full textHorník, Jiří. "Systémy pro správu dokumentů (DMS) ve státní správě." Master's thesis, Vysoká škola ekonomická v Praze, 2006. http://www.nusl.cz/ntk/nusl-7256.
Full textBouallegue, Seifeddine. "Mobility and Security Management in Femtocell Networks." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066084/document.
Full textTelecommunications networks are subject to continuous improvement and enhancement processes. Every new iteration brings its set of challenges and limitations. In fact, the exponential growth in telecommunication devices, from base stations to user equipments lead to serious energy efficiency issues. Along with the privacy threats, especially for wireless networks as the channels used by operators can also be used by any eavesdropper. Spectrum usage optimization is also a challenge due to the fact that the available spectrum in wireless communications systems has been a very rare resource because of the increasing demand. Emerging networks, such as femtocells, suffer also from the previously mentioned challenges. The current thesis work focuses on proposing several solutions to the previously cited challenges: energy efficiency, spectrum sharing and security. The research work introduced in this thesis has focused on three main axes: First, find a way to minimize the energy consumption of femtocells in macro/femto-cellular BWA networks by decreasing the number of unwanted mobility events and introducing new power states for the femtocell device. Second, propose a solution that aims to reduce the expected transmission time within the dwell time of Secondary User (SU) in the coverage of a femtocell using an algorithm based on the minimum expected transmission time within the dwell time of the User Equipment (UE) in the coverage of the femtocell. Finally, introduce a new scheme that is based on best relay selection method that maximizes the secrecy rate and benefits from increasing the number of relays under QoS constraint at the destination
Macpherson, Janet Robertson. "Implications of the inclusion of document retrieval systems as actors in a social network." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4913/.
Full textKecir, Abd-El-Karim. "Performance evaluation of urban rail traffic management techniques." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S026/document.
Full textUrban rail traffic is subject to numerous disrupting events that drift it from its nominal behavior. In order to minimize the impact of these disturbances, rail operators rely on a set of techniques. Despite their efficiency, performances of theses techniques are rarely well studied, nor are they of proven optimality; a direct consequence of them being empirically built. It is in this particular context that comes our work to provide solutions that allow for the evaluation of such techniques and for the comparison of their relative performances in various scenarios. The proposed approach is based on variants of Petri nets as models, and on the Monte-Carlo method for the simulation of their execution. This combination has led to the development of SIMSTORS, a tool for the simulation of urban rail systems, and more generally, stochastic systems under dynamic rescheduling. Additionally, this thesis addresses the question of timetable realizability; that is whether or not a given timetable is indeed realizable by a system for which it was built. Indeed, a timetable is meant to drive the behavior of a system but there is no guarantee as to its realizability. We therefore propose a method for the verification of the realizability of timetables with a strictly positive probability
Li, Fan. "Performance evaluation and decision support in industrial system management : a benefit-cost-value-risk based methodology." Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0019/document.
Full textPerformance measurement and management represents serious challenges to practitioners and researchers in industrial engineering and management sciences for efficient decision making with integrated, dynamic and relevant performance information regarding simultaneous accomplishment of multiple stakeholder objectives. Although many methodologies and approaches have already been proposed, there is still room for new advances to go further in assisting managers and engineers to make better decisions in a more systematic manner.Assuming that the performance of an industrial system, project or process can be comprehensively evaluated by four main dimensions (benefit, cost, value and risk), the thesis proposes an original and complete framework as well as an operational methodology to apply relevant supporting methods and tools for the sake of performance evaluation and decision support in industrial projects.Using several examples based on industrial cases, the work emphasises that the proposed methodology can provide the support for: opportunity assessment of several decision alternatives to select the most appropriate one, performance evaluation at any phase of an industrial project and monitoring of an ongoing industrial project requiring performance evaluation at several phases along its life history
Leandro, Elizondo Ronald. "Méthodologie pour l'évaluation de la performance de l'amélioration continue des processus industriels." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0138/document.
Full textCurrently, Lean Management Practices represents a competitive advantage for most companiestrying to raise their performance in a very aggressive global market. Lean’s implementationprocess is very complex; it means to transform into a new philosophy and managing the business- a behaviour change. This paper reviews the literature in relation to Lean managerial practicesand the incapacity for some companies to sustain the results over time; specifically about themisalignment among the Lean’s purposes with their implementation efforts to waste eliminationthrough the improvement of processes. The literature found several management issues regardingthis problem but the main reasons are firstly a breakdown interfaces between socio-technicalaspects and secondly, a need for real commitment from the top management. Consequently, thetarget of this paper is to synthesize and analyze those Lean difficulties based on dynamic systemthinking and, also, to propose two assumptions as an alternative to a conventional proposal(linearity) to solve this Leans’ problems: the contribution of productivity management whichnarrows these gaps, in a more holistic manner; in addition, based on the continuous improvementapproach as a metric to assess Lean’s "behaviour change" and also to encourage commitment; italso engages the performance dilemma throughout empowered workers that have beendocumented in the Lean literature
Tatarinov, Igor. "Semantic data sharing with a peer data management system /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/6942.
Full textLamé, Guillaume. "Intégration entre services hospitaliers : management des opérations en cancérologie." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLC027/document.
Full textThis dissertation addresses the challenge of coordinating hospital services. We take an integrated view on care delivery and the various units involved in a care process, with a case study in outpatient chemotherapy process at Henri Mondor hospital, Créteil, France. We tackle three research questions :1. How should a change program in a multi-department setting be designed and managed?2. How can one improve outpatient chemotherapy delivery?3. Why do strategic plans look so disconcerting and disappointing in public academic medical centers, compared to otherindustrial organizations, when similar methods are applied?Our main research method is action-research. During reorganization projects, we adapt and combine methods from operational research and industrial engineering in order to integrate hospitals’ specificities. We propose and evaluate reorganisation methods focused on interdepartmental coordination, and we contribute to a better knowledge of the specific environment of hospitals, which is quite different from the contexts in which industrial engineering traditionally developed
Afsar, Sezin. "Revenue optimization and demand response models using bilevel programming in smart grid systems." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10141/document.
Full textThis thesis is concerned with revenue optimization of an energy provider. A bilevel programming approach is proposed to model the relationship between the energy provider (leader) and power users (follower). The leader intends to achieve an optimal trade-off between revenue and peak load whereas the follower minimizes total cost of users to achieve system optimality. A smart grid structure that allows two-way communication is assumed to interconnect users and to schedule their demand regarding the prices. Day-ahead real-time prices are read by each customer's smart meter and the response is coordinated. In this thesis, we propose several bilinear bilevel programs that are presented and reformulated as single-level mixed integer problems using the KKT conditions of the follower's problem. These MIPs are solved to optimality for randomly generated instances using a commercial software. Different versions of the models are tested and compared. In order to solve large instances, several heuristics are developed. Two of these methods are shown to be efficient and solve large instances that cannot be solved within a reasonable time interval using exact method. Their outputs are compared to the exact solutions for small instances and their performances are evaluated. Finally, we address the robust bilevel optimization problem, discuss existing approaches, give illustrative examples, and propose avenues for future research
Kojok, Farah. "Performance study of hybrid cooling systems for the utilization in buildings." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4381/document.
Full textThis thesis is a contribution towards the reduction of primary energy consumption and a better use of the renewable energy sources within the cooling system for building use. After a state of the art of the cooling machines for building use, a dynamic model for a solar absorption cooling system is developed and simulated. Then, an effectiveness factor (EF) for the comparison of solar absorption chiller suitability in different locations is defined. In the third chapter, the concept of hybrid cooling system -an efficient method contributing to the reduction of primary energy consumption- is presented. Hybrid cooling systems are categorized and reviewed, with the improvement achieved compared to standalone technologies. Then, a scheme for the selection of the best hybrid cooling system for given conditions is proposed. In the last part, an optimal sizing method that defines, in a specific region, a hybrid cooling energy system, economically feasible with maximum renewable energy share is presented. Thereby, the sizing method is performed taking into account the region where it will be used. For this purpose, a hybrid cooling system, used for a standard residential house, is designed. The system is modeled and simulated using a transient system simulation program, called Trnsys. Finally, the problem of sizing is studied for different case studies; namely Marseilles-France and Beirut-Lebanon. The aim is to assess the proposed method according to diverse climatic conditions, component prices and electricity costs
Simonet, Anthony. "Active Data - Enabling Smart Data Life Cycle Management for Large Distributed Scientific Data Sets." Thesis, Lyon, École normale supérieure, 2015. http://www.theses.fr/2015ENSL1004/document.
Full textIn all domains, scientific progress relies more and more on our ability to exploit ever growing volumes of data. However, as datavolumes increase, their management becomes more difficult. A key point is to deal with the complexity of data life cycle management,i.e. all the operations that happen to data between their creation and there deletion: transfer, archiving, replication, disposal etc.These formerly straightforward operations become intractable when data volume grows dramatically, because of the heterogeneity ofdata management software on the one hand, and the complexity of the infrastructures involved on the other.In this thesis, we introduce Active Data, a meta-model, an implementation and a programming model that allow to represent formally and graphically the life cycle of data distributed in an assemblage of heterogeneous systems and infrastructures, naturally exposing replication, distribution and different data identifiers. Once connected to existing applications, Active Data exposes the progress of data through their life cycle at runtime to users and programs, while keeping their track as it passes from a system to another.The Active Data programming model allows to execute code at each step of the data life cycle. Programs developed with Active Datahave access at any time to the complete state of data in any system and infrastructure it is distributed to.We present micro-benchmarks and usage scenarios that demonstrate the expressivity of the programming model and the implementationquality. Finally, we describe the implementation of a Data Surveillance framework based on Active Data for theAdvanced Photon Source experiment that allows scientists to monitor the progress of their data, automate most manual tasks,get relevant notifications from huge amount of events, and detect and recover from errors without human intervention.This work provides interesting perspectives in data provenance and open data in particular, while facilitating collaboration betweenscientists from different communities
Shang, Hui. "Maintenance modelling, simulation and performance assessment for railway asset management." Thesis, Troyes, 2015. http://www.theses.fr/2015TROY0022/document.
Full textThe aim of this thesis research work is to propose maintenance models for railways infrastructures that can help to make better maintenance decisions in the more constrained environment that the railway industry has to face, e.g. increased traffic loads, faster deterioration, longer maintenance planning procedures, shorter maintenance times. The proposed maintenance models are built using Coloured Petri nets; they are animated through Monte Carlo simulations to estimate the performance of the considered maintenance policies in terms of cost and availability. The maintenance models are developed both at the component and network levels, and several different maintenance problems are considered. At the rail component level, maintenance policies with different level of monitoring information (level of gradual deterioration vs binary working state) are compared to show the benefits of gathering monitoring information on the deterioration level. The effect of preventive maintenance delays is also investigated for both condition-based inspection policies and periodic inspection policies on a gradually deteriorating component. At the line level, a maintenance policy based on a two-level inspection procedure is first investigated. Then, considering the case when the deterioration process depends on the operation modes (normal vs limited speed), a maintenance optimization problem is solved to determine an optimal tuning of the repair delay and speed restriction
Chen, Bofei. "A multi-agent based cooperative control model applied to the management of vehicles-trains." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCA002/document.
Full textThe use of individual vehicles is becoming more and more important in inner cities, leading to many side problems such as traffic jam, air pollution and accidents. Intelligent vehicles have been studied so as to overcome these problems. Some solutions provided by these works are already available to the general public market such as city safety systems, lane assists,... Many research works are focusing on finding suitable and acceptable solutions to these problems and dealing with traffic jam management. The proposal can tackle the traffic jam problem whether on system level or on individual vehicle providing better control and perception systems aimed at reducing time response and/or at increasing the road capacity.On the vehicle side, one promising solutions is vehicles platoons (vehicles-train) making possible a huge reduction of the longitudinal distance between vehicles and thus allowing an increase of roads capacity. Basically, two main trends can be found literature. On one side, global approaches are based on a common reference frame, generally tied to the vehicles playground, shared by all vehicles of the train. Then, each vehicle behaves according to this shared reference which can be either the trajectory of the first vehicle of the train or a reference trajectory built offline. On the other side, local approaches are based on vehicle local perception abilities. Some methods, based on classical control algorithms or physical-inspired and inter-vehicular interaction link, are developed.Despite numerous research works on this subject, which are focusing on individual vehicle control, few of them consider the platoon control solution on the system point of view. However, this system point of view is particularly important when several platoons have to share the road network and meet at critical nodes such as crossroads and roundabouts. This introduces new issues such as (1) how to organize vehicles and trains of vehicle, (2) the interactions between trains of vehicles and (3) the strategies of sharing the road infrastructure efficient, reliable and safe. Solving these problems will then allow considering vehicles-train solution as a good candidate for solving traffic flow issues at transportation system level.The goal of this thesis is to propose an approach, based on multi-agent paradigm, which aims at dealing with systems level issues focusing mainly on intersections between vehicles-trains of vehicles. Thus, we propose a cooperative control system which relies on multi-level decision processes aimed at dealing with the interaction of platoons at road network nodes. This cooperative control system allows both to maintain the coherence and the safety condition of each involved train of vehicles and to adapt each train components behavior so as to make train shared the road, and especially roundabouts and crossroads, efficiently (i.e. without stopping any vehicle). This cooperative control system is divided into three different levels. The global train state is managed at the train-level decision process based on the train level perceptions. The vehicle-level process makes the decision concerning each individual vehicle according to data provided by the train-level and to the interaction between vehicles. Finally, the motor-level process makes the link between the vehicle-level command and hardware level of vehicles. In this thesis, we focus on the train-level and vehicle-level. When encountering, trains exchange information such as one part of their perceptions.Besides the goal of having an efficient approach so as to enable several vehicles-trains to share the road infrastructure, we also strategies to transform the meetings of vehicles-trains at road nodes into reconfiguration spots where trains can reconfigure and recombine.The developed algorithm are tested in simulation so as to obtain proper evaluation of our proposal using suitable indicators
Muller, Steve. "Risk monitoring with intrusion detection for industrial control systems." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0082/document.
Full textCyber-attacks on critical infrastructure such as electricity, gas, and water distribution, or power plants, are more and more considered to be a relevant and realistic threat to the European society. Whereas mature solutions like anti-malwareapplications, intrusion detection systems (IDS) and even intrusion prevention or self-healing systems have been designed for classic computer systems, these techniques have only been partially adapted to the world of Industrial ControlSystems (ICS). As a consequence, organisations and nations fall back upon risk management to understand the risks that they are facing. Today's trend is to combine risk management with real-time monitoring to enable prompt reactions in case of attacks. This thesis aims at providing techniques that assist security managers in migrating from a static risk analysis to areal-time and dynamic risk monitoring platform. Risk monitoring encompasses three steps, each being addressed in detail in this thesis: the collection of risk-related information, the reporting of security events, and finally the inclusion of this real time information into a risk analysis. The first step consists in designing agents that detect incidents in the system. In this thesis, an intrusion detection system is developed to this end, which focuses on an advanced persistent threat (APT) that particularly targets critical infrastructures. The second step copes with the translation of the obtained technical information in more abstract notions of risk, which can then be used in the context of a risk analysis. In the final step, the information collected from the various sources is correlated so as to obtain the risk faced by the entire system. Since industrial environments are characterised by many interdependencies, a dependency model is elaborated which takes dependencies into account when the risk is estimated
Jmila, Houda. "Dynamic resource allocation and management in virtual networks and Clouds." Thesis, Evry, Institut national des télécommunications, 2015. http://www.theses.fr/2015TELE0023/document.
Full textCloud computing is a promising technology enabling IT resources reservation and utilization on a pay-as-you-go manner. In addition to the traditional computing resources, cloud tenants expect compete networking of their dedicated resources to easily deploy network functions and services. They need to manage an entire Virtual Network (VN) or infrastructure. Thus, Cloud providers should deploy dynamic and adaptive resource provisioning solutions to allocate virtual networks that reflect the time-varying needs of Cloud-hosted applications. Prior work on virtual network resource provisioning only focused on the problem of mapping the virtual nodes and links composing a virtual network request to the substrate network nodes and paths, known as the Virtual network embedding (VNE) problem. Little attention was paid to the resource management of the allocated resources to continuously meet the varying demands of embedded virtual networks and to ensure efficient substrate resource utilization. The aim of this thesis is to enable dynamic and preventive virtual network resources provisioning to deal with demand fluctuation during the virtual network lifetime, and to enhance the substrate resources usage. To reach these goals, the thesis proposes adaptive resource allocation algorithms for evolving virtual network requests. We adress the extension of an embedded virtual node requiring more resources and consider the substrate network profitability. We also deal with the bandwidth demand variation in embedded virtual links. We first provide a heuristic algorithm to deal with virtual nodes demand fluctuation. The work is extended by designing a preventive re-configuration scheme to enhance substrate network profitability. Finally, a distributed, local-view and parallel framework was devised to handle embedded virtual links bandwidth fluctuations. The approach is composed of a controller and three algorithms running in each substrate node in a distributed and parallel manner. The framework is based on the self-stabilization approach, and can manage various forms of bandwidth demand variations simultaneously
El, Masri Ali. "Towards efficient and fair resources management in wireless mesh networks." Thesis, Troyes, 2013. http://www.theses.fr/2013TROY0011/document.
Full textThe main purpose of Wireless Mesh Networks (WMNs) is to provide a communication backbone for a high number of end-users, thus WMNs have to support heavy traffic load. In this thesis, we intend to maximize utilization and achieve fair allocation of the bandwidth resources in WMNs. We consider two WMN environments: WMN using the IEEE 802.11 MAC standard, which is characterized by its cheap devices and widespread deployment, and WMN using directional antennas, which are emerged as an attractive technology to enhance the spatial reusability in wireless networks. For WMM based on IEEE 802.11, we design NICC, a congestion control scheme that recognizes congestion as neighborhood-related problem, and not a link-based one. Indeed, complex interference among neighboring nodes is the main starvation cause in WMNs. Therefore, NICC handles congestion using mutual cooperation within a wireless neighborhood. NICC makes use of some underexploited fields in the IEEE 802.11frame header in order to provide an implicit multi-bit congestion feedback, and thus ensure accurate rate control without generating overhead, making efficient use of bandwidth. For WMN with directional antennas, we design FreeDMAC, a TDMA-based MAC scheme with contention-free scheduling. FreeDMAC guarantees that each node is aware of all ongoing transmissions in its neighborhood, and thus avoids directional-related problems such as deafness, making efficient use of bandwidth. Moreover, FreeDMAC presents a link-slot assignment that provides two levels of fairness: Per-link and per-flow fairness
Roa, castro Laura. "Management de la complexité organisationnelle des projets en ingénierie systèmes : Mise en place d'une approche socio-technique pour l'amélioration des aspects collaboratifs." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLC023/document.
Full textThe organisational complexity implied by New Product Development (NPD) within the industry, is often induced by the complex nature of the products themselves. In this context, MBSE (Model Based Systems Engineering) and collaborative approaches address those complexities and have been recognised by their contribution to improve the NPD processes. A successful implementation of a collaborative MBSE design would allow to manage both complexities. This PhD thesis describes an investigation on collaborative MBSE design projects within French teams in automotive and aeronautics companies, with the purpose of enhancing them to improve product development. We understand collaborative MBSE design as a complex organisational system which implies different views or dimensions. The identification of those dimensions, their definition and the study of their interactions constitute the first objective of this research. Understanding each dimension in order to improve collaboration between the project members is the second objectivedeuxième objectif.The third and last objective of this research is to propose Socio Technical Systems (STS) supporting this collaboration. The results of the thesis provide a methodology to manage organisational complexity in collaborative MBSE design projects. The methodology is a combination of four methods assisting the characterisation of the MBSE dimensions (people, process, information objects and tools), while defining their interactions. These methods support respectively: 1) The assessment and description of collaborative MBSE design projects from a systemic perspective 2) The establishment of a shared vision of the work 3) The analysis of the cooperation among the actors 4) The development of STS such as collaborative environment and a collaborative capitalisation support. The implementation of the proposed methods, process and guidelines in the industry has shown how the enhancement of collaboration in MBSE design projects can improve the overall product development