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Rozprawy doktorskie na temat „Systems-of-systems”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Wang, Bo. "Analysis and implementation of time-delay systems and networked control systems." Thesis, University of South Wales, 2008. https://pure.southwales.ac.uk/en/studentthesis/analysis-and-implementation-of-timedelay-systems-and-networked-control-systems(f54e4378-db9b-443d-b505-88b4af5bb72a).html.

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Systems with delays frequently appear in engineering. The presence of delays makes system analysis and control design much more complicated. Networked control systems where the delays are often random are typical cases of such systems. For one particular category of time-delays systems, integral processes with dead time (IPDTs), the control limits that a PI controller can achieve are discussed in this thesis. These limits include the region of the control parameters to guarantee the system stability, the control parameters to achieve the given gain and/or phase margins (GPMs), the constraint o

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Gebers, Adrian. "Aesthetics of systems / Systems of aesthetics." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/11964.

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This paper investigates the role artists play in maintaining their legitimacy through participating in various roles across the entire art world by tracing the careers of selected artists with expanded practices. Where actions are performed on behalf of artists, artists lose the ability to represent themselves and even participate in their own disenfranchisement. Systems and systems aesthetics are first explored before the art world itself is revealed as a system. The positions that artists take up in the system is explored through the careers of various artists, including those that work as c

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3

Koo, Kevin C. K. (Kevin Cheng Keong). "Investigating Army systems and Systems of Systems for value robustness." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59253.

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Thesis (S.M. in System Design and Management)--Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 243-250).<br>This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet the mission intent under a variety of future contexts. The proposed approach encompasses three methods, namely "Needs to

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Shah, Nirav Bharat 1979. "Influence strategies for systems of systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79341.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2013.<br>This electronic version was submitted and approved by the author's academic department as part of an electronic thesis pilot project. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from department-submitted PDF version of thesis.<br>Includes bibliographical references (p. 141-149).<br>Distributed decision making has been identified as a source of managerial complexity for leaders of systems of systems (SoS). A new framework, AIR (Anticipati

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5

Wolf, Robert A. "Multiobjective collaborative optimization of systems of systems." Thesis, Cambridge, Massachusetts, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/10945/37786.

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CIVINS<br>Concept studies for warship designs typically focus on ship performance characteristics by setting design goals for such things as speed, range, and cost. However, warships generally operate as part of a larger battle or strike group. Therefore, the designs should be evaluated as part of a system of multiple ship systems since designing each ship individually may result in underutilized and excess equipment and capability; in other words an inefficient design of the system of systems. This thesis examines the simultaneous design of several ships using the sea base concept as an ex

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Wolf, Robert A. (Robert Allen). "Multiobjective collaborative optimization of systems of systems." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33596.

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Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, 2005.<br>Includes bibliographical references (p. 85-88).<br>Concept studies for warship designs typically focus on ship performance characteristics by setting design goals for such things as speed, range, and cost. However, warships generally operate as part of a larger battle or strike group. Therefore, the designs should be evaluated as part of a system of multiple ship systems since designing each ship individually may result

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Bashar, Abusaksaka Aolo Bashar Ali. "Properties of delay systems and diffusive systems." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/10553/.

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In this thesis, we investigate questions about the properties of delay systems and diffusive systems as well as Hankel and weighted Hankel operators. After detailing the necessary background in Chapter 1, in Chapter 2 the focus is on the development of methods to study the stability of delay and fractional systems. This analysis is carried forward using some BIBO and H∞ stability tests. Generalisation of the Walton-Marshall method [38] enable us to move from the single and multi-delay cases to fractional delay systems. This method gives procedures for finding stability windows as the delay var

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8

Johnson, Philip. "Evaluating systems of systems against mission requirements." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9116.

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This thesis investigates the nature of systems problems and the need for an open viewpoint to explain a system by viewing it as part of a larger whole and explaining its role in terms of that larger whole. The problem this research investigates is wicked and hence is unique in each instance. Therefore, an empirical proof would only hold for that particular instantiation of the problem, not the problem as a whole. After exposing some of the limitations of traditional systems engineering to this type of problem it is clear that a new approach is needed. The approach taken in the thesis is model

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9

Abdalla, Gabriel. "Establishment of an ontology for Systems-of-Systems." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-10112017-160820/.

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Systems-of-Systems (SoS) represent an emerging research field in the Software Engineering area. In particular, SoS refer to systems that make possible the interoperability of distributed, complex systems, cooperating among them to reach a common mission. Several SoS have already been developed and used, but there is no consensus about diverse terms and concepts in this field, what can make difficult the communication among different stakeholders involved in the development and evolution of SoS, besides lacking of a standardization and common understanding among researchers and practitioners. T

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10

Hanic, Dzana, and Amer Surkovic. "An Attack Model of Autonomous Systems of Systems." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39810.

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Context: In order to provide more functionalities and services, systems collaborate with each other creating more complex systems called Systems of Systems. Exploiting security vulnerabilities in such complex systems has an impact over system safety and it is not sufficient to analyze them separately in the development process. Observing these safety and security interdependencies together can be done via the process of attack modeling where attack models deploy a model for detecting vulnerabilities and possible mitigation strategies while observing system security from an adversary point of v

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11

Rodríguez, Lina María Garcés. "A reference architecture of healthcare supportive home systems from a systems-of-systems perspective." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-16102018-111654/.

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Population ageing has been taking place all over the world, being estimated that 2.1 billion people will be aged 60 or over in 2050. Healthcare Supportive Home (HSH) Systems have been proposed to overcome the high demand of remote home care for assisting an increasing number of elderly people living alone. Since a heterogeneous team of healthcare professionals need to collaborate to continually monitor health status of chronic patients, a cooperation of pre-existing e-Health systems, both outside and inside home, is required. However, current HSH solutions are proprietary, monolithic, high cou

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12

Chattopadhyay, Debarati. "A method for tradespace exploration of systems of systems." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50607.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2009.<br>Includes bibliographical references (p. 211-215).<br>Systems of Systems (SoS) are a current focus of many organizations interested in integrating assets and utilizing new technology to create multi-component systems that deliver value over time. The dynamic composition of SoS along with the managerial independence of their component systems necessitates systems engineering considerations and methods beyond those of traditional systems engineering, particularly for SoS concept design. Qualitati

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13

Migliorini, Gabriele 1970. "Renormalization-group studies of disordered magnetic systems, strongly correlated electonic systems, and polymeric systems." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85333.

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Moro, Puppi Wanderley Gregory. "A framework for facilitating the development of systems of systems." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2425/document.

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Le développement de Systèmes de Systèmes a pris de l'ampleur dans de nombreux domaines. Aujourd'hui, les applications complexes nécessitent que plusieurs systèmes développés indépendamment coopèrent ensemble, ce qui conduit au concept de Systèmes de Systèmes. Malgré une telle popularité, aucun consensus n'y a pas encore pu être atteint sur une définition précise de ce que sont les Systèmes de Systèmes. De plus, le nœud du problème est que la plupart des applications sont encore construites à la main et développées de manière ad hoc, c'est-à-dire, sans contraintes et sans être guidées par une s

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15

Despotou, Georgios. "Managing the evolution of dependability cases for systems of systems." Thesis, University of York, 2007. http://etheses.whiterose.ac.uk/11059/.

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Dependability is a composite property consisting of attributes such as reliability, availability, safety and security. The achievement of these attributes is often essential for the operational success of systems undertaking critical and complex tasks. Assurance that the final system will demonstrate the required dependability qualities, can be crucial to the acceptance of the system into service. Safety cases are a well established concept used to establish assurance about the safety properties of a system. However, safety cases focus only on one attribute of dependability. The principles and

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16

Alvsvåg, Øyvind. "HVAC-systems : Modeling, simulation and control of HVAC-systems." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13821.

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It is of interest for companies to keep the annual operating cost of their buildings as low as possible. A substantial share of the annual operating costs are due to the large amount of energy needed for heating of the ventilated air and heating of the rooms inside the buildings. Also much of the electrical energy in the world today is created using fossil fuel or charcoal. This has an environmental aspect and the consumers of energy becomes more and more aware of this. Thus reducing the energy used by a buildings HVAC system can save the users for considerable expenditures and also has an env

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17

Shen, Hao. "Embeddings of Simple Triple Systems and Resolvable Triple Systems." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211561.

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Wedgwood, Kyle. "Dynamical systems techniques in the analysis of neural systems." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13599/.

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As we strive to understand the mechanisms underlying neural computation, mathematical models are increasingly being used as a counterpart to biological experimentation. Alongside building such models, there is a need for mathematical techniques to be developed to examine the often complex behaviour that can arise from even the simplest models. There are now a plethora of mathematical models to describe activity at the single neuron level, ranging from one-dimensional, phenomenological ones, to complex biophysical models with large numbers of state variables. Network models present even more of

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Heng, Jiin Shyang. "On systems engineering processes in system-of-systems acquisition." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5689.

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Approved for public release; distribution is unlimited.<br>S results show that a low-risk SoS acquisition could continue with the current SE process as the benefits derived from an extensive front-end SE process are limited. Conversely, a high-risk SoS acquisition should adopt the SoS SE process proposed herein to enhance the SoS acquisition program's chance of success. It is highrisk SoS acquisitions such as the US Army's Future Combat System, the US Coast Guard's Deep Water System, the Joint Tactical Radio System (JTRS), and Homeland Security's SBInet that would likely benefit from the

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Kingston, Kenneth Samuel. "Applications of complex adaptive systems approaches to coastal systems." Thesis, University of Plymouth, 2003. http://hdl.handle.net/10026.1/474.

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This thesis investigates the application of complex adaptive systems approaches (e.g. Artificial Neural Networks and Evolutionary Computation) to the study of coastal hydrodynamic and morphodynamic behaviour. Traditionally, nearshore morphological coastal system studies have developed an understanding of those physical processes occurring on both short temporal, and small spatial scales with a large degree of success. The associated approaches and concepts used to study the coastal system at these scales have primarily been linear in nature. However, when these approaches to studying the coast

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21

Sinclair, Jane. "Action systems, determinism and the development of secure systems." Thesis, Open University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389245.

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Ozbayrak, M. "Design of tool management systems for flexible manufacturing systems." Thesis, Loughborough University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359905.

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Maree, Charl. "Diagnostic monitoring of dynamic systems using artificial immune systems." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/1780.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2006.<br>The natural immune system is an exceptional pattern recognition system based on memory and learning that is capable of detecting both known and unknown pathogens. Artificial immune systems (AIS) employ some of the functionalities of the natural immune system in detecting change in dynamic process systems. The emerging field of artificial immune systems has enormous potential in the application of fault detection systems in process engineering. This thesis aims to firstly familiarise the reader with the various cu

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Stockton, Nicklas O. "Hybrid Genetic Fuzzy Systems for Control of Dynamic Systems." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523635312922039.

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Bouziat, Teddy. "A Cooperative Architecting Procedure for Systems of Systems Based on Self-Adaptive Multi-Agent Systems." Thesis, Toulouse 1, 2017. http://www.theses.fr/2017TOU10069.

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Depuis la seconde guerre mondiale, l’ingénierie des systèmes a permis le développement de méthodologies pour contrôler le développement de systèmes et de projets de plus en plus complexes. En 1990, la chute de l’URSS a provoqué un changement de doctrine militaire aux Etats-Unis en passant d’une confrontation bipolaire à une mondialisation des conflits comportant une grande variété de menaces. Sa nouvelle doctrine était de faire collaborer ses systèmes de défense existants pour produire un système de défense de haut niveau, décentralisé, adaptable et composé de systèmes indépendants. C’est l’ap

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Larsson, Erik. "SYSTEMS OF INTERPRETATION." Thesis, Konstfack, Institutionen för Konst (K), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-2990.

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Every image locates intelligence.1 I decided to become an artist due to this premise. Mostof my childhood was spent in front of a TV-screen. By channel surfing across the rangeof our satellite dish I created new narratives of my own, based on the different channelsexisting images. The disappearance of images became as important as their appearance.Art offered me a way of preserving and study these transient images of contemporaryculture.

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Chernyakova, Irina. "Systems of valuation." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81659.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 69-75).<br>The 1972 publication of The Limits to Growth marked a watershed moment in ongoing environmental debates among politicians, economists, scientists, and the public in the postwar period. Sponsored by the Club of Rome, an influential think-tank established in 1968, the report was published against the backdrop of the progressive activism of the 1960s, and prefigured the neo-conservative politics of the 1980s. It represent

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McKee, Andrew. "Multipliers of dynamical systems." Thesis, Queen's University Belfast, 2017. https://pure.qub.ac.uk/portal/en/theses/multipliers-of-dynamical-systems(65b93a06-6e7b-420b-ae75-c28d373f8bdf).html.

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Herz–Schur multipliers of a locally compact group have a well developed theory coming from a large literature; they have proved very useful in the study of the reduced C∗-algebra of a locally compact group. There is also a rich connection to Schur multipliers,which have been studied since the early twentieth century, and have a large number of applications. We develop a theory of Herz–Schur multipliers of a C∗-dynamical system, extending the classical Herz–Schur multipliers, making Herz–Schur multiplier techniques available to study a much larger class of C∗-algebras. Furthermore, we will also

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Ed-Daoui, Ilyas. "Towards systems-of-systems structural resilience assessment Resilience assessment as a foundation for systems-of-systems safety evaluation : application to an economic infrastructure An approach to systems-of-systems structural analysis through interoperability assessment : application on Moroccan Case A study of an adaptive approach for systems-of-systems integration A contribution to systems-of-systems concept standardization Unstructured peer-to-peer systems : towards swift Routing A deterministic approach for systems-of-systems resilience quantification Vers des systèmes de systèmes robustes Security enhancement architectural model for IMS based networks Towards reliable IMS-based networks." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMIR07.

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De nos jours, nous attendons des systèmes de systèmes d'être plus que simplement fonctionnel, mais aussi fiable, de préserver leurs performances, de mener les actions requises et, surtout, d'anticiper d'éventuelles défaillances. La résilience fait partie des nombreuses approches d'évaluation de la fiabilité. Elle est directement liée aux conséquences de perturbations et incertitudes. Il s'agit des conséquences en cas de perturbations et des incertitudes associées. La résilience est définie comme la capacité des systèmes à résister à une perturbation majeure selon paramètres de dégradation et à

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Germanos, Vasileios. "Model checking of mobile systems and diagnosability of weakly fair systems." Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/3059.

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This thesis consists of two independent contributions. The rst deals with model checking of reference passing systems, and the second considers diagnosability under the weak fairness assumption. Reference passing systems, like mobile and recon gurable systems are everywhere nowadays. The common feature of such systems is the possibility to form dynamic logical connections between the individual modules. However, such systems are very di cult to verify, as their logical structure is dynamic. Traditionally, decidable fragments of -calculus, e.g. the well-known Finite Control Processes (FCP), are

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Becker, Basil. "Architectural modelling and verification of open service-oriented systems of systems." Phd thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2014/7015/.

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Systems of Systems (SoS) have received a lot of attention recently. In this thesis we will focus on SoS that are built atop the techniques of Service-Oriented Architectures and thus combine the benefits and challenges of both paradigms. For this thesis we will understand SoS as ensembles of single autonomous systems that are integrated to a larger system, the SoS. The interesting fact about these systems is that the previously isolated systems are still maintained, improved and developed on their own. Structural dynamics is an issue in SoS, as at every point in time systems can join and le

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Owarish, Miles I. "Concepts of integration of fire safety systems with building services systems." Thesis, Heriot-Watt University, 2000. http://hdl.handle.net/10399/523.

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GOMES, GEORGIA REGINA RODRIGUES. "INTEGRATION OF REPOSITORIES OF DIGITAL LIBRARY SYSTEMS AND LEARNING MANAGEMENT SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9944@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Com o uso generalizado das tecnologias de informação no apoio ao ensino, é comum disponibilizar conteúdos digitais, seja através de Sistemas de Bibliotecas Digitais (DLMS) ou de Sistemas de Gerência de Aprendizagem (LMS). No entanto, estes sistemas funcionam de forma independente, têm características diferentes e manipulam tipos diferentes de materiais, sendo seus repositórios com dados e metadados heterogêneos e distribuídos. Os conteúdos destes repositórios seriam melhor aproveitados se estivessem integrados a um ambiente comum, ou

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Mitchell, Tami Lee. "A New Method for the Examination of Policy Systems of Systems." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/29506.

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This dissertation examines multi-agency policy environments as a policy system of systems (SoS). The research conducted for this dissertation establishes the need to develop a method of analysis suitable for the analysis of a policy SoS that allows for the examination of individual policy relationships while maintaining a holistic perspective of the entire SoS. The Three-Dimensional Policy Design Structure (3DPDS) is proposed as a method of analysis suitable for examination of a policy SoS. This dissertation focuses on application of the 3DPDS to three specific areas of space launch policy

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Karlsson, Ingvar. "Applying Systems Approach to the Process of Designing Information Systems." Thesis, University of Skövde, Department of Computer Science, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-593.

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<p>Designing information systems is a complex task. The purpose of this work is to contribute to an improved understanding of the design conditions in order to alleviate the problems that occur due to complexity in the design process. To possibly increase the understanding of the conditions for the design of interactive information systems, this dissertation concerns applying systems approach to the design situation. This is done in order to obtain understanding, but also to be able to identify the consequences and possible benefits of doing so. A literature survey and two extensive interviews

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Wernstedt, Fredrik. "Multi-agent systems for distributed control of district heating systems /." Karlskrona : Blekinge Institute of Technology, 2005. http://www.bth.se/fou/Forskinfo.nsf/allfirst2/51e3dfb98bb6ba6bc1257107002f6d29?OpenDocument.

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Abdul, Samad Alaa. "Application of kinetic energy storage systems to power systems operation." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81523.

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This thesis analyzes some potential applications of kinetic energy (KE) storage systems in power systems operation. The goal was to take advantage of the KE stored in the existing rotating machines in a power system such as synchronous generators and motors by "borrowing" some of the stored KE when electricity prices are high and "returning" this energy to the rotating masses when the prices are down. As shown in this thesis, this operation can be performed from the control center by optimally scheduling the set points of the generators under automatic generation control (AGC) over a gi

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Bogdan, Paul. "Theoretical Foundations of Multicore Systems Design: A Dynamical Systems Perspective." Research Showcase @ CMU, 2011. http://repository.cmu.edu/dissertations/183.

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The proliferation of complex phenomena and the tightening competition for limited resources are two fundamental challenges for the modeling, analysis, and optimization of dynamical processes taking place in networked environments/architectures. Modes of collective and competitive behavior can be noticed across a wide array of social, biological, and technological contexts. From urban crowds to bacterial colonies, from brain neurons to human cells and even electron-hole interactions in semiconductors, dynamical phase transitions influence the macroscopic behavior of complex networks. To address

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Wicht, Anthony C. (Anthony Charles). "Acquisition strategies for commonality across complex aerospace systems-of-systems." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68411.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 184-195).<br>Commonality is a system architecting strategy widely used to improve affordability and reliability of families of products. However not all commonality is beneficial, and organizations must balance commonality benefits and commonality costs to pursue a successful strategy. The existing literature on commonality assumes that all commonality decisions are made within a single organization. This is not t

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Wachtel, Amanda M. (Amanda Marie). "A scalable methodology for modeling cities as systems of systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82418.

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Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 144-146).<br>As cities evolve in size and complexity, their component systems become more interconnected. Comprehensive modeling and simulation is needed to capture interactions and correctly assess the impact of changes. This thesis presents a methodology for modeling cities from a systems of systems perspective. The framework supplies general modeling guidelines and key steps. Also addressed are the im

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Zeigler, Bernard P. "Contrasting emergence: In systems of systems and in social networks." SAGE PUBLICATIONS INC, 2017. http://hdl.handle.net/10150/621270.

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This article considers emergence in the context of systems of systems, examining the earlier proposed tri-layered architecture in some depth. In contrast with healthcare reform, a social media phenomenon, the emergence of topics in the Twitter user community, is shown not to satisfy a critical condition of the architecture. Nevertheless, detection of topic emergence is shown to offer insights into the design of Emergence Behavior Observers.

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Yamamoto, Kazusa. "Control of electromechanical systems, application on electric power steering systems." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT069/document.

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De nos jours, la plupart des véhicules sont équipés de Directions Assistées Electriques (DAE). Ce type de systèmes d'aide à la conduite permet de réduire les efforts que le conducteur doit fournir pour tourner les roues. Ainsi, grâce à un moteur électrique, la DAE applique un couple additionnel en accord avec le comportement du conducteur et la dynamique du véhicule. Il est donc nécessaire de développer une commande en couple basée en particulier sur le signal provenant d'un capteur mesurant le couple agissant au niveau de la barre de torsion (correspondant à une image du couple conducteur). C

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Kumar, Prem. "Applications of superconducting magnetic energy storage systems in power systems." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44118.

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A Superconducting Magnetic Energy Storage (SMES) system is a very efficient storage device capable of storing large amounts of energy. The primary applications it has been considered till now are load-leveling and system stabilization.This thesis explores new applications/benefits of SMES in power systems. Three areas have been identified. â ¢ Using SMES in conjunction with PV systems.SMES because of their excellent dynamic response and PV being an intermittent source complement one another.A scheme for this hybrid system is developed and simulation done accordingly. Using SMES in an Asynchr

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Scott, Michael Chase. "Viability of waste milk pasteurization systems for calf feeding systems." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/42348.

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The objective of this study was to determine amount and composition of waste milk (WM) generated by 13 dairy farms and to measure effectiveness of on-farm pasteurizers. Waste milk was sampled bi-weekly from three farms located in North Carolina (NC) for 28 weeks and twice from ten farms in California (CA) in June 2005 and Jan. 2006. Amount of waste milk generated ranged from 2.48 â 9.84 L/calf/d. Standard plate count (SPC) of waste milk before pasteurization averaged 17 million cfu/ml on NC farms and 1.6 million cfu/ml on CA farms. Pasteurizers failed to deactivate alkaline phosphat

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Jones, Wyatt Elizabeth Ann. "A reliability-based measurement of interoperability for conceptual-level systems of systems." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52317.

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The increasing complexity of net-centric warfare requires assets to cooperate to achieve mission success. Such cooperation requires the integration of many heterogeneous systems into an interoperable system-of-systems (SoS). Interoperability can be considered a metric of an architecture, and must be understood as early as the conceptual design phase. This thesis approaches interoperability by first creating a general definition of interoperability, identifying factors that affect it, surveying existing models of interoperability, and identifying fields that can be leveraged to perform a measur

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Touati, Lyes. "Internet of things security : towards a robust interaction of systems of systems." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2311/document.

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Cette thèse traite des problèmes et des défis de sécurité dans l’Internet des Objets (IdO). L’évolution de l’Internet classique vers l’Internet des Objets crée de nombreux challenges dans la manière de sécuriser les communications et soulève des problèmes liés au contraintes de l’internet des objets à savoir : objets à faibles ressources d’énergie et de calculs, hétérogénéité nuisant à l’interopérabilité des objets, taille du réseau de plus en plus grande, ... etc. En effet, Internet s’est développé d’un réseau d’ordinateurs personnels et de serveurs vers un immense réseau connectant des milli

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Pafford, Michael E., and Lyle V. Munn. "A comparison of information systems and non-information systems personnel working in non-information systems organizational departments." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/24277.

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A survey was conducted to investigate motivational and satisfaction differences between Information Systems (IS) and non-IS personnel working in various non-IS organizational departments. The motivational factors of Motivating Potential Score (MPS), Growth Need Strength (GNS), Social Need Strength (SNS), Average Psychological Score (APS), and Overall Satisfaction Score (OSS) were measured. Control for occupational group differences was achieved by classifying survey respondents into one of two job categories: Managerial or Professional/Technical. Significant differences were found in the GNS s

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Elders, Ian Michael. "The use of intelligent systems in control and management of power systems." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248724.

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Argunsah, Bayram Hande. "Biomechanics of Prosthetic Knee Systems: Role of Dampening and Energy Storage Systems." Cleveland State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=csu1371689387.

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Ahmad, Bashar I. "Applications of nonuniform sampling in wideband multichannel communication systems." Thesis, University of Westminster, 2011. https://westminsterresearch.westminster.ac.uk/item/8zwv9/applications-of-nonuniform-sampling-in-wideband-multichannel-communication-systems.

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This research is an investigation into utilising randomised sampling in communication systems to ease the sampling rate requirements of digitally processing narrowband signals residing within a wide range of overseen frequencies. By harnessing the aliasing suppression capabilities of such sampling schemes, it is shown that certain processing tasks, namely spectrum sensing, can be performed at significantly low sampling rates compared to those demanded by uniform-sampling-based digital signal processing. The latter imposes sampling frequencies of at least twice the monitored bandwidth regardles

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