Rozprawy doktorskie: „System”

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Hof, Jacoba Marchiena van den. "System theory and system identification of compartmental systems". [S.l. : [Groningen] : s.n.] ; [University Library Groningen] [Host], 1996. http://irs.ub.rug.nl/ppn/152829512.

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Bjelkemyr, Marcus. "System of Systems Characteristics in Production System Engineering". Doctoral thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10617.

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Magee, Christopher, i Weck Olivier de. "Complex System Classification". International Council On Systems Engineering (INCOSE), 2004. http://hdl.handle.net/1721.1/6753.

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The use of terms such as “Engineering Systems”, “System of systems” and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term systems alone. This paper searches for a useful taxonomy or classification scheme for complex Systems. There are two aspects to this problem: 1) distinguishing between Engineering Systems (the term we use) and other Systems, and 2) differentiating among Engineering Systems. Engineering Systems are found to be differentiated from other complex systems by being human-designed and having both significant human complexity as well as significant technical complexity. As far as differentiating among various engineering systems, it is suggested that functional type is the most useful attribute for classification differentiation. Information, energy, value and mass acted upon by various processes are the foundation concepts underlying the technical types.
Engineering Systems Division and Mechanical Engineering, Center for Innovation in Product Development

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4

Li, Siying. "Context-aware recommender system for system of information systems". Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2602.

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Travailler en collaboration n’est plus une question mais une réalité, la question qui se pose aujourd’hui concerne la mise en œuvre de la collaboration de façon à ce qu’elle soit la plus réussie possible. Cependant, une collaboration réussie n’est pas facile et est conditionnée par différents facteurs qui peuvent l’influencer. Il est donc nécessaire de considérer ces facteurs au sein du contexte de collaboration pour favoriser l’efficacité de collaboration. Parmi ces facteurs, le collaborateur est un facteur principal, qui est étroitement associé à l’efficacité et à la réussite des collaborations. Le choix des collaborateurs et/ou la recommandation de ces derniers en tenant compte du contexte de la collaboration peut grandement influencer la réussite de cette dernière. En même temps, grâce au développement des technologies de l’information, de nombreux outils numériques de collaboration sont mis à la disposition tels que les outils de mail et de chat en temps réel. Ces outils numériques peuvent eux-mêmes être intégrés dans un environnement de travail collaboratif basé sur le web. De tels environnements permettent aux utilisateurs de collaborer au-delà de la limite des distances géographiques. Ces derniers laissent ainsi des traces d’activités qu’il devient possible d’exploiter. Cette exploitation sera d’autant plus précise que le contexte sera décrit et donc les traces enregistrées riches en description. Il devient donc intéressant de développer les environnements de travail collaboratif basé sur le web en tenant d’une modélisation du contexte de la collaboration. L’exploitation des traces enregistrés pourra alors prendre la forme de recommandation contextuelle de collaborateurs pouvant renforcer la collaboration. Afin de générer des recommandations de collaborateurs dans des environnements de travail collaboratifs basés sur le web, cette thèse se concentre sur la génération des recommandations contextuelles de collaborateurs en définissant, modélisant et traitant le contexte de collaboration. Pour cela, nous proposons d’abord une définition du contexte de collaboration et choisissons de créer une ontologie du contexte de collaboration compte tenu des avantages de l’approche de modélisation en l’ontologie. Ensuite, une similarité sémantique basée sur l’ontologie est développée et appliquée dans trois algorithmes différents (i.e., PreF1, PoF1 et PoF2) afin de générer des recommandations contextuelles des collaborateurs. Par ailleurs, nous déployons l’ontologie de contexte de collaboration dans des environnements de travail collaboratif basés sur le web en considérant une architecture de système des systèmes d’informations du point de vue des environnements de travail collaboratif basés sur le web. À partir de cette architecture, un prototype correspondant d’environnement de travail collaboratif basé sur le web est alors construit. Enfin, un ensemble de données de collaborations scientifiques est utilisé pour tester et évaluer les performances des trois algorithmes de recommandation contextuelle des collaborateurs
Working collaboratively is no longer an issue but a reality, what matters today is how to implement collaboration so that it is as successful as possible. However, successful collaboration is not easy and is conditioned by different factors that can influence it. It is therefore necessary to take these impacting factors into account within the context of collaboration for promoting the effectiveness of collaboration. Among the impacting factors, collaborator is a main one, which is closely associated with the effectiveness and success of collaborations. The selection and/or recommendation of collaborators, taking into account the context of collaboration, can greatly influence the success of collaboration. Meanwhile, thanks to the development of information technology, many collaborative tools are available, such as e-mail and real-time chat tools. These tools can be integrated into a web-based collaborative work environment. Such environments allow users to collaborate beyond the limit of geographical distances. During collaboration, users can utilize multiple integrated tools, perform various activities, and thus leave traces of activities that can be exploited. This exploitation will be more precise when the context of collaboration is described. It is therefore worth developing web-based collaborative work environments with a model of the collaboration context. Processing the recorded traces can then lead to context-aware collaborator recommendations that can reinforce the collaboration. To generate collaborator recommendations in web-based Collaborative Working Environments, this thesis focuses on producing context-aware collaborator recommendations by defining, modeling, and processing the collaboration context. To achieve this, we first propose a definition of the collaboration context and choose to build a collaboration context ontology given the advantages of the ontology-based modeling approach. Next, an ontologybased semantic similarity is developed and applied in three different algorithms (i.e., PreF1, PoF1, and PoF2) to generate context-aware collaborator recommendations. Furthermore, we deploy the collaboration context ontology into web-based Collaborative Working Environments by considering an architecture of System of Information Systems from the viewpoint of web-based Collaborative Working Environments. Based on this architecture, a corresponding prototype of web-based Collaborative Working Environment is then constructed. Finally, a dataset of scientific collaborations is employed to test and evaluate the performances of the three context-aware collaborator recommendation algorithms

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Markert, Erik, Hailu Wang, Göran Herrmann i Ulrich Heinkel. "Kostenmodellierung mit SystemC/System-AMS". Universitätsbibliothek Chemnitz, 2007. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200700902.

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In diesem Beitrag wird eine Methode zur Beschreibung von Kostenfaktoren und deren Verknüpfung über Hierarchiegrenzen hinweg dargestellt. Sie eignet sich sowohl für rein digitale Systeme mit Softwareanteilen als auch für gemischt analog/digitale Systeme. Damit ist sie im Hardware-Software Codesign und im Analog-Digital Codesign zum Vergleich verschiedener Systemkompositionen anwendbar. Die Implementierung mit C++ ermöglicht neben einer Nutzung mit digitalem SystemC auch den Einsatz mit der analogen SystemC-Erweiterung SystemC-AMS und vereinfacht die Nutzung gegenüber einer vorhandenen VHDL-Implementierung. Als Anwendungsbeispiel fungieren Komponenten eines Systems zur Inertialnavigation.

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Klaus, Stephan. "System-Level-Entwurfsmethodik eingebetteter Systeme /". Aachen : Shaker, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014914784&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Altas, Daghan S. "System level design with systemC". Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30781.

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In this thesis, we provide a system level design methodology aimed for the design of embedded systems. Our methodology is geared towards the concurrent design of hardware components and software agents. Our choice of tool/language pair is CoWare N2C design tool and SystemC specification language. Our design flow is completed with a high performance hardware synthesis methodology relying behavioral synthesis. A case study, the design of an ATM switch, is carried out to illustrate the proposed ideas.

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8

Venkatesh, Saligrama Ramaswamy. "System-identification for complex-systems". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10440.

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Werner, Matthias. "Verteilte Mobilität - Eine spannende Herausforderung". Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-78213.

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Cyber-physikalische Systeme (CPS) sind eine erweitere Sicht auf eingebettete Systeme, die die konkreten umgebenden Elemente in das Systemdesign einbeziehen. Das Design solcher Systeme erfordert neue Herangehensweisen: Während beispielsweise in "normalen" verteilten Systemen Aspekte wie "Bewegung" oder "Ort" möglichst transparent und damit für den Nutzer unsichtbar gestaltet werden, benötigen CPS-Anwendungen häufig Bewusstsein für Bewegung oder Ort, d.h., sie sind _motion aware_ oder _location aware_. Die Professur "Betriebssysteme" der TUC hat sich die Frage gestellt, wie eine generische Unterstützung für solche verteilte mobile Systeme aussehen könnte. Im Vortrag werden Probleme, Konzepte und erste Lösungsansätze für ein künftiges Betriebssystem für diese Art von Systemen vorgestellt.

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10

Kokeš, Petr. "Konfigurovatelný informační systém". Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-203930.

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The topic of the master thesis is focused on the design of information system which is designed on the base of the analysis of existing information systems available in the Czech Republic. This analysis is focused on finding uncovered areas. Evaluation of information systems is based on a multicriterial selection analysis, which can specify a minimally covered area. The aim of the master thesis is to show undiscovered possibilities of information systems maintaining the various types of information. The first part is focused to characteristics of information systems, its kinds and types. This part is focused to architecture and to methods of information systems design, too. The second part is focused on analysis of the existing information systems. The aim is to identify areas that are not sufficiently covered. The third part is focused on design of an information system based on the analysis of uncovered areas in the first part. In the last section is documentation of created an information system.

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Makhdum, Farah, i Kamran Mian. "Smarter City : A System to Systems". Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4200.

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Developments in the technological fields have opened doors to sustain quality of life for making cities smarter and democratic by allowing citizens to play active roles rather being just passive participants along with their governments. Therefore, in this study we have proposed an idealized interaction system- a process used for organizational development based on Interactive Planning Approach, where citizen and government adopt more effective and efficient ways to coordinate, collaborate and communicate for the development and growth of different systems in the city, which ultimately serves as “system to systems”. By using Delphi methodology- a reaserch approach by Norman Dalkey (1946), we invited 25 people representing a wide variety of interests participated in the series two rounds of surveys to suggest more effective and efficient methods of interaction for the citizens and government. All proposed ways after second round of survey are used to design the Idealized Smarter City model – a model of knowledge-based sustainable development. However, structural and behavioral comparisons suggest the need of further improvement to get the proposed system implemented, in review of rapidly increasing population and resulting deteriorating resource availability to sustain the social and technological needs.
Farah Makhdum +92.321.4702133 Kamran Mian +92.321.3213219

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12

Majumdar, WindyJoy Springs. "System of systems technology readiness assessment". Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Sep%5FMajumdar.pdf.

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Thesis (M.S. in System Engineering Management)--Naval Postgraduate School, September 2007.
Thesis Advisor(s): Osmundson, John ; Mandelbaum, Jay. "September 2007." Description based on title screen as viewed on October 23, 2007. Includes bibliographical references (p. 137-140). Also available in print.

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13

Fasoulas, Aristides Ioannis. "Inmarsat communications system : a systems approach". Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/28293.

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Malackanič, Roman. "Analýza komplexného systému firmy". Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193320.

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This diploma thesis focuses on the analysis of a particular soft complex system in the company. This system is a running car service with a determined problem situation. This system and its problem is then evaluated in terms of soft systems methodology, system dynamics and critical systems heuristics. The theoretical section provides concepts to understand the complexity and also individual system approaches. As beneficial of work I consider the practical part, which is aimed to the analysis of complex real-world system using the selected approaches as well as an evaluation of these approaches. Main purpose is to bring comparisons and suggestions for improvement and also a broader view to the system. All of this increases information value of approaches and we are able to deliver more relevant information. Thesis is therefore focused not only to deal with examples from practice but also to extend the selected theories within the system approaches.

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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.
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 proposed SoS SE process.

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Layton, Richard A. "Analytical system dynamics /". Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/7131.

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Kugler, Sean Michael. "The integration of hospitals: the transition from a system to a system of systems". Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44601.

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Approved for public release; distribution is unlimited
Hospitals are the foundation of our health care system and where the emphasis should be placed on providing quality health care while resolving the issues of rising cost and declining access. The architecture of operating as independent systems and competing for the patronage of the local population results in duplication in the acquisition of goods and services. When the probability of any individual requesting service at a hospital is in large part a factor of distance rather than marketing; emphasis should be placed in developing a mutually supporting network or system of systems to support the overall health of a community. The problems such as these plaguing hospitals are examined from a systems engineering perspective to determine their causal mechanisms. Through the application of integration theory, a system of systems model for hospitals is created and shown to reduce costs and risk by increasing sustainability through optimization of the different business models strengths. Physicians and hospitals have already begun integrating, albeit at a much smaller scale, via Accountability Care Organizations and joint ventures with noticeable reductions in cost and increased efficiencies. Hospitals need to examine and implement these models and form a network of hospitals for the purpose of shared resources and mutual beneficial agreements to reduce costs further and implement economies of scale.

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Al, Badine Samir. "STMM soumission de travaux en mode messagerie /". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611499t.

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Mora-Camino, Félix. "Synthese de travaux sur l'analyse, la planification et la commande de systemes complexes de production et de transport". Toulouse 3, 1987. http://www.theses.fr/1987TOU30209.

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Erturk, Alper. "An expert system for reward systems design". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA383532.

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Thesis (M.S. in Information Technology Management and M.S. in Systems Management) Naval Postgraduate School, Sept. 2000.
Thesis advisor(s): Jansen, Erik; Nissen, Mark E. Includes bibliographical references (p. 93-94). Also available online.

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Tosun, Suleyman. "Reliability-centric system design for embedded systems". Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2005. http://wwwlib.umi.com/cr/syr/main.

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Lindblom, Sebastian, i David Johansson. "Automatic System Tests on Airborne Radar Systems". Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-340345.

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The aim of this master thesis was to create automated system tests on airborne radar systems. Automated tests can reduce time spent on repetitive and monotone work and instead create time for exploratory testing and customer criteria testing. Nightly builds and well designed tests can improve robustness and create a more stable system for the user. The project started with a pre-study, which consisted of researching the system in question, researching the possibilities of automated tests on said system and different tools that could be used in the project. Furthermore the pre-study contained interviews, visits and workshops within SAAB, with topics including automated tests, automation software and the SAAB GlobalEye system. The solution included two separated tests, one regression test and one startup test. The regression test verifies that selected standard functions works with the new soft/hardware updates and the Startup test verifies that the starting sequences for selected subsystems are executed correctly. Both of these tests were installed in the test laboratory. The tests were separated in to two parts; one control part and one analysis part. By recording the data being sent on the different interfaces while performing the tests, it's made possible to analyze the recorded data. This method enables many tests to be performed on the same set of data. The control part was solved with a third party software, called Squish, from a German company named Froglogic. The analysis part was written in MATLAB, where the test results were presented as well. The chain of events was set up and executed by Jenkins (an open source automation software), which also served as a scheduler, to enable nightly builds.

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Haidar, Ghayath. "Reasoning system for real time reactive systems". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/MQ47844.pdf.

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Rutherford, Matthew J. "Adequate system-level testing of distributed systems". Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3219039.

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Papalexopoulos, Alexis D. "Modeling techniques for power system grounding systems". Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/13529.

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Freeman, Isaac. "A modular system for constructing dynamical systems". Thesis, University of Canterbury. Mathematics, 1998. http://hdl.handle.net/10092/8888.

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This thesis discusses a method based on the dual principle of Rössler, and developed by Deng, for systematically constructing robust dynamical systems from lower dimensional subsystems. Systems built using this method may be modified easily, and are suitable for mathematical modelling. Extensions are made to this scheme, which allow one to describe a wider range of dynamical behaviour. These extensions allow the creation of systems that reproduce qualitative features of the Lorenz Attractor (including bifurcation properties) and of Chua's circuit, but which are easily extensible.

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27

Klaus, Stephan [Verfasser]. "System-Level-Entwurfsmethodik eingebetteter Systeme / Stephan Klaus". Aachen : Shaker, 2006. http://d-nb.info/1186584165/34.

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Merritt, John W. "Distributed file systems in an authentication system". Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/9938.

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Keller, James (James Thomas). "System architecture of offshore oil production systems". Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45220.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008.
Includes bibliographical references (p. 117-118).
This thesis presents an approach to applying Systems Architecture methods to the development of large, complex, commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to assist BP in the development of concepts for a multi-billion dollar oil production system, particularly in the unprecedented deep water arctic locations prone to seismic activity, as well as in existing fields that must be extended. The thesis demonstrates that these systems can be decomposed and analyzed using rigorous, methodical system architecture thinking that archives and represents tacit knowledge in several graphical frameworks. The thesis breaks the architecture of oil and gas production systems into two problems. The first problem is the architecture of one facility and one reservoir; a classic problem of assigning function to form. The second problem is the architecture of multiple facilities and multiple reservoirs; a classic problem of connection and routing. For the first problem, the production process is decomposed using Object Process Methodology (OPM). The decompositions provide a methodology to capture industry knowledge that is not always explicitly stated and provides a framework to explore the entire architectural design space. The thesis then describes how these decompositions of general and specific oil systems can be used to develop software models, using the meta-language tool OPN (Object Process Network), that successfully generate thousands of architecture concepts. This set of feasible architectures can be prioritized and better understood using metrics in an effort to down-select to a handful of preferred concepts to be carried forward for more detailed study and eventual development.
(cont.) The approach to the second problem demonstrates that even a modest set of facilities and reservoirs have a huge number of connection possibilities. This space of connection possibilities is large and daunting, and typically is not fully explored. To solve the second problem the thesis presents two models that generate all the possible connection schemes between elements in a system, in this case oil facilities and reservoirs. It is then demonstrated that these possibilities can be prioritized through the use of metrics. The thesis presents a method that can identify new concepts, highlight preferred sets of concepts, and underline patterns common to those concepts. This method increases the architects' overall knowledge and understanding of the entire space of possibilities, and ensures that all options are considered in the development of complex systems.
by James Keller.
S.M.

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Bertrand, Allison R., Michael S. Moore i Ben A. Abbott. "System Management in Network-Based Telemetry Systems". International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606174.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California
Network-based telemetry systems are increasingly being used to improve the flexibility and longevity of flight test systems. Modern network-based flight test systems utilize large numbers of devices including high-speed network switches, data acquisition devices, recorders, and telemetry interfaces, all of which must be managed in a coordinated fashion. The move to network-based testing provides the ability to build a standards-based System Management interface which can status and control a diverse set of devices. The benefits include the ability to easily tailor System Management tools to support many different styles of user interactions and to quickly integrate new types of devices. While the new capabilities presented by System Management are exciting, the very openness of the system presents challenges to ensure that future growth will be seamlessly supported. This paper will discuss issues encountered while implementing flight test System Management tools for a network-based telemetry system.

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Sörman, Simon. "System Information Distribution in Massive MIMO Systems". Thesis, Linköpings universitet, Kommunikationssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129294.

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The 5th generation mobile telecommunication system (5G) is currently being specified and developed, with large expectations on throughput and efficiency. While 4G and more specifically LTE might constitute a basis of the design of the network, there are some parts that should be improved. One thing to improve is the static signalling that occurs very frequently in a 4G network, of which system information such as synchronization signals, detection of network frequencies, operators, configurations etc. is a part. It has been shown that the static signalling requires both much energy and time-frequency resources. Since the system information is not intended for a single user it is always broadcast so that any user, and any amount of users can read it when needed. 5G will use a technique called massive MIMO, where the base station is equipped with a large number of antennas which can be used to direct signals in space, called beamforming. This thesis presents a new method for distribution of system information that can utilize the beamforming capabilities of massive MIMO. A simple model together with simulated user channel statistics from urban 4G scenarios are used to show that the new method outperforms the classical method of only broadcasting the information, with respect to time-frequency resources. Especially if there are high requirements on the latency of the system information, the new method results in a large gain.

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Smith, Barry S. "Integrated inspection system in manufacturing : vision systems /". Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-04272010-020147/.

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Boyd, Richard K. "A weapons systems development decision support system". Thesis, Monterey, Calif. : Naval Postgraduate School, 1992. http://handle.dtic.mil/100.2/ADA251791.

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Thesis (M.S. in Information Systems)--Naval Postgraduate School, March 1992.
Thesis Advisor: Nakagawa, Gordon. "March 1992." Description based on title screen as viewed on March 4, 2009. Includes bibliographical references (p. 66).

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34

Burton, Frank R. "Trade-offs in system of systems acquisition". Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/7686/.

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Large organisations tend to have multiple organisational goals. Example goals for organisations that perform search and rescue might be being able to search large areas quickly, and to provide, for the speedy recovery of survivors. To satisfy these goals, organisations will acquire different resources such as new systems, training programmes, infrastructure and processes. These different resources when combined to meet the same organisational goals, can be considered as a System of Systems (SoS). Organisational goals can be satisfied by completely different resource combinations with each resource combination satisfying the individual goals to varying degrees and with different overall costs. Since organisations only have limited resources available to them, there is an incentive for organisations to find the most efficient resource combinations to satisfy their goals. This can be considered as performing trade-offs in SoS acquisition. There are several open research gaps in performing trade-offs in SoS acquisition. The first is that the resources involved are heterogeneous. How do you compare the benefits of new equipment against new training programmes or organisational structures? The second is the multi-objective nature of the problem with the different organisational goals competing for the same limited budget. The third is managing the problem through-life and maintaining the satisfaction of organisational goals as old system retire and new systems come into service. This thesis presents a model-based technique (with prototype tool support) that combines techniques from the fields of through life capability management, goal modelling, search-based software engineering and model-driven engineering. This technique addresses the three problems stated above allowing decision makers to more efficiently consider the trade-offs involved when performing SoS acquisition. The technique has been evaluated on a realistic case study and on a standard problem found in the field of search-based software engineering.

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Cioran, Anders. "System Integration Testing ofAdvanced Driver Assistance Systems". Thesis, KTH, Reglerteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175371.

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En viktig faktor for att fortsatta forbattra traksakerheten ar genom att utveckla ochimplementera avancerade forarstodsfunktioner (ADAS) i fordon. Gemensamma aspekterhos de undersokta ADAS ar deras formagor att detektera och undvika farliga traksituationergenom att nyttja sensordata och fordonstillstand for att kontrollera fordonetsforyttning. Nya testmetoder maste overvagas eftersom nyutvecklade ADAS ar mer komplexaoch sakerhetskritiska. Detta arbete undersoker hur man kan testa nya ADAS fran etthelfordonsperspektiv, genom att bland annat ta hansyn till aspekter sasom lampliga testomgivningaroch trakscenarier, och darefter jamfora resultaten med nuvarande testmetoder.Olika typer av ADAS klassikationer har undersokts och kombinerat med egna komplexitetsoch traksakerhets klassikationer har gjort det mojligt att dra slutsatser och foreslagenerella teststrategier for olika ADAS.
A key factor to further improve road safety is the development and implementation ofAdvanced Driver Assistance Systems (ADAS) in vehicles. Common aspects of the investigatedADAS' are their abilities of detecting and avoiding hazardous trac situations byusing sensor data and vehicle states in order to control the movement. As more complex andsafety critical ADAS are developed, new test methods have to be considered. This thesisinvestigate how to test new ADAS from a complete vehicle level by considering aspects suchas suitable test environments and trac scenarios, and thereafter compare the results withexisting testing methods. Dierent classications of ADAS have been investigated and combinedwith own classications considering complexity and trac safety aspects, have madeit possible to conclude and propose general test strategies for dierent ADAS.

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Horan, Stephen. "Using Labview to Design a Payload Control System". International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606179.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California
As part of a project to develop small satellites, we have developed a combined ground station and flight computer control software package using LabVIEW. These computer systems are used to acquire data from sensors, control communications links, provide automatic data acquisition capabilities, and provide a user interface. In this paper, we will look at the state machines that describe both sets of software, the challenges for the flight computer development given the PC/104 format, and show how the final product was deployed.

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Mathew, Manu K. "Nonlinear system identification and prediction /". Online version of thesis, 1993. http://hdl.handle.net/1850/11594.

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Iacobucci, Joseph Vincent. "Rapid Architecture Alternative Modeling (RAAM): a framework for capability-based analysis of system of systems architectures". Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43697.

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The current national security environment and fiscal tightening make it necessary for the Department of Defense to transition away from a threat based acquisition mindset towards a capability based approach to acquire portfolios of systems. This requires that groups of interdependent systems must regularly interact and work together as systems of systems to deliver desired capabilities. Technological advances, especially in the areas of electronics, computing, and communications also means that these systems of systems are tightly integrated and more complex to acquire, operate, and manage. In response to this, the Department of Defense has turned to system architecting principles along with capability based analysis. However, because of the diversity of the systems, technologies, and organizations involved in creating a system of systems, the design space of architecture alternatives is discrete and highly non-linear. The design space is also very large due to the hundreds of systems that can be used, the numerous variations in the way systems can be employed and operated, and also the thousands of tasks that are often required to fulfill a capability. This makes it very difficult to fully explore the design space. As a result, capability based analysis of system of systems architectures often only considers a small number of alternatives. This places a severe limitation on the development of capabilities that are necessary to address the needs of the war fighter. The research objective for this manuscript is to develop a Rapid Architecture Alternative Modeling (RAAM) methodology to enable traceable Pre-Milestone A decision making during the conceptual phase of design of a system of systems. Rather than following current trends that place an emphasis on adding more analysis which tends to increase the complexity of the decision making problem, RAAM improves on current methods by reducing both runtime and model creation complexity. RAAM draws upon principles from computer science, system architecting, and domain specific languages to enable the automatic generation and evaluation of architecture alternatives. For example, both mission dependent and mission independent metrics are considered. Mission dependent metrics are determined by the performance of systems accomplishing a task, such as Probability of Success. In contrast, mission independent metrics, such as acquisition cost, are solely determined and influenced by the other systems in the portfolio. RAAM also leverages advances in parallel computing to significantly reduce runtime by defining executable models that are readily amendable to parallelization. This allows the use of cloud computing infrastructures such as Amazon's Elastic Compute Cloud and the PASTEC cluster operated by the Georgia Institute of Technology Research Institute (GTRI). Also, the amount of data that can be generated when fully exploring the design space can quickly exceed the typical capacity of computational resources at the analyst's disposal. To counter this, specific algorithms and techniques are employed. Streaming algorithms and recursive architecture alternative evaluation algorithms are used that reduce computer memory requirements. Lastly, a domain specific language is created to provide a reduction in the computational time of executing the system of systems models. A domain specific language is a small, usually declarative language that offers expressive power focused on a particular problem domain by establishing an effective means to communicate the semantics from the RAAM framework. These techniques make it possible to include diverse multi-metric models within the RAAM framework in addition to system and operational level trades. A canonical example was used to explore the uses of the methodology. The canonical example contains all of the features of a full system of systems architecture analysis study but uses fewer tasks and systems. Using RAAM with the canonical example it was possible to consider both system and operational level trades in the same analysis. Once the methodology had been tested with the canonical example, a Suppression of Enemy Air Defenses (SEAD) capability model was developed. Due to the sensitive nature of analyses on that subject, notional data was developed. The notional data has similar trends and properties to realistic Suppression of Enemy Air Defenses data. RAAM was shown to be traceable and provided a mechanism for a unified treatment of a variety of metrics. The SEAD capability model demonstrated lower computer runtimes and reduced model creation complexity as compared to methods currently in use. To determine the usefulness of the implementation of the methodology on current computing hardware, RAAM was tested with system of system architecture studies of different sizes. This was necessary since system of systems may be called upon to accomplish thousands of tasks. It has been clearly demonstrated that RAAM is able to enumerate and evaluate the types of large, complex design spaces usually encountered in capability based design, oftentimes providing the ability to efficiently search the entire decision space. The core algorithms for generation and evaluation of alternatives scale linearly with expected problem sizes. The SEAD capability model outputs prompted the discovery a new issue, the data storage and manipulation requirements for an analysis. Two strategies were developed to counter large data sizes, the use of portfolio views and top `n' analysis. This proved the usefulness of the RAAM framework and methodology during Pre-Milestone A capability based analysis.

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39

Kiran, Sai. "An inertial measurement unit interface and processing system synchronized to global positioning system time". Ohio University / OhioLINK, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1176489175.

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Rebahi, Yacine. "Irrégularité des D-modules algébriques holonomes". Université Joseph Fourier (Grenoble ; 1971-2015), 1996. http://www.theses.fr/1996GRE10205.

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Ce travail est consacre a l'etude de l'irregularite des systemes differentiels algebriques holonomes. Nous demontrons que les complexes de solutions de type exponentiel, associes a ces systemes, sont a cohomologie constructible et nous calculons leur caracteristique d'euler poincare. Pour cela, et dans le cas d'un fibre de rang un, nous utilisons un passage a l'infini qui nous permet de nous ramener a des resultats connus pour des solutions formelles de croissance appropriee pour des systemes analytiques holonomes. D'autre part, si nous microlocalisons nos constructions, nous obtenons des resultats analogues dans le cas d'un fibre de rang quelconque

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Rodhouse, Kathryn, Steven Ziegler i Ryan Huttsell. "A Robotic Platform for Student System Design". International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605979.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California
The goal of the project described in this paper, is to develop a platform for undergraduate engineering students to use in system analysis and design courses. We chose to develop an inexpensive robotic platform. The robot is intended to be autonomous, under the control of an on-board microcontroller. In the first revision of the hardware, a three wheeled design will be used, with the intention of being used indoors, on smooth surfaces. Students in their first year of college education will purchase the components, and assemble the robot. After analyzing the baseline design, they will be encouraged to incorporate new sensors and actuators in the subsequent laboratory courses.

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42

Habart, Lukáš. "Posouzení informačního systému firmy a návrh změn". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2011. http://www.nusl.cz/ntk/nusl-222837.

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The diploma thesis concerning the analysis of current information system in firm ATYKO s.r.o.. The thesis includes the problems, insufficiency of the system as well as the possible solution to mentioned problems and proposal of changes which would lead to optimalization of the company. Part of this work evaluates the costs and benefits of proposed solution.

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Churbanau, Dzmitry. "A Conceptual Framework for Specification of Network-Centric System Architectures". Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32663.

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Software-based system architecture has been recognized as a foundation laying out the underpinnings that are critically important for successful engineering of large-scale complex systems. In recent years, architecting has played a more crucial role in engineering network-centric system of systems. The software paradigm has been shifting from treating software as a product (SaaP) to treating software as a service (SaaS). SaaS is also referred to as the Cloud Computing, where the term "cloud" is used as a metaphor for "network". As the complexity of the architecture of network-centric software-based system of systems has increased, the description of such architecture has posed significant technical challenges. The U.S. Department of Defense (DoD) has developed the DoD Architecture Framework [DoDAF 2009a, DoDAF 2009b] for describing system architectures. IEEE proposes a Recommended Practice for Architectural Description of Software-Intensive Systems [IEEE 2000]. SEI provides high-level guidelines for Documenting Software Architectures [Clements et al 2003]. However, all of the diagrams proposed by DoD, IEEE, and SEI are two-dimensional static graphical and textual representations that do not reveal the dynamic characteristics of a system architecture. This thesis presents a conceptual framework (CF) for specifying the architecture of a network-centric software-based system of systems. The developed CF provides the beginning part of a larger research effort. The main goal of the overall research is to employ the automation-based software paradigm and to automatically generate a visual simulation model of a system architecture, with which experiments can be conducted to assess the dynamic characteristics of that architecture. The CF, developed in the research described herein, enables the automatic generation of a visual simulation model representing a system architecture. The proposed CF is evaluated in half a dozen case studies to demonstrate that it provides the necessary elements for automatic generation of a simulation model as the description of a complex system of systems architecture.
Master of Science

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44

Scott, Wesley Dane. "A flexible control system for flexible manufacturing systems". Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/158.

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A flexible workcell controller has been developed using a three level control hierarchy (workcell, workstation, equipment). The cell controller is automatically generated from a model input by the user. The model consists of three sets of graphs. One set of graphs describes the process plans of the parts produced by the manufacturing system, one set describes movements into, out of and within workstations, and the third set describes movements of parts/transporters between workstations. The controller uses an event driven Petri net to maintain state information and to communicate with lower level controllers. The control logic is contained in an artificial neural network. The Petri net state information is used as the input to the neural net and messages that are Petri net events are output from the neural net. A genetic algorithm was used to search over alternative operation choices to find a "good" solution. The system was fully implemented and several test cases are described.

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Aga, Svein. "System Recovery in Large-Scale Distributed Storage Systems". Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9724.

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This report aims to describe and improve a system recovery process in large-scale storage systems. Inevitable, a recovery process results in the system being loaded with internal replication of data, and will extensively utilize several storage nodes. Such internal load can be categorized and generalized into a maintenance workload class. Obviously, a storage system will have external clients which also introduce load into the system. This can be users altering their data, uploading new content, etc. Load generated by clients can be generalized into a production workload class. When both workload classes are actively present in a system, i.e. the system is recovering while users are simultaneously accessing their data, there will be a competition of system resources between the different workload classes. The storage must ensure Quality of Service (QoS) for each workload class so that both are guaranteed system resources. We have created Dynamic Tree with Observed Metrics (DTOM), an algorithm designed to gracefully throttle resources between multiple different workload classes. DTOM can be used to enforce and ensure QoS for the variety of workloads in a system. Experimental results demonstrate that DTOM outperforms another well-known scheduling algorithm. In addition, we have designed a recovery model which aims to improve handling of critical maintenance workload. Although the model is intentionally intended for system recovery, it can also be applied to many other contexts.

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Pfaender, Jens Holger. "Competitive Assessment of Aerospace Systems using System Dynamics". Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14014.

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Aircraft design has recently experienced a trend away from performance centric design towards a more balanced approach with increased emphasis on engineering an economically successful system. This approach focuses on bringing forward a comprehensive economic and life-cycle cost analysis, which can be addressed by the introduction of a dynamic method allowing the analysis of the future attractiveness of such a concept in the presence of uncertainty. One way of addressing this is through the use of a competitive market model. However, existing market models do not focus on the dynamics of the market, which results in poor predictive capabilities. The method proposed here focuses on a top-down approach that integrates a competitive model based on work in the field of system dynamics into the aircraft design process. The primary contribution is the demonstration of the feasibility of such integration. This integration is achieved through the use of surrogate models, which enabled not only the practical integration of analysis techniques, but also reduced the computational requirements so that interactive exploration as envisioned is actually possible. An example demonstration of this integration is built on the competition in the 250 seat large commercial aircraft market. Two aircraft models were calibrated to existing performance and certification data and then integrated into the system dynamics market model, which was then calibrated with historical market data. This calibration showed a much improved predictive capability as compared to the conventional logit regression models. The resulting market model was then integrated into a prediction profiler environment with a time variant Monte-Carlo analysis resulting in a unique trade-off environment. This environment was shown to allow interactive trade-off between aircraft design decisions and economic considerations while allowing the exploration potential market success in the light of varying external market conditions and scenarios. Another use of the existing outputs of the Monte-Carlo analysis was then realized by visualizing the model variables on a multivariate scatter plot. This enables the designer to define strategic market and return on investment goals for a number of scenarios and then directly see which specific aircraft designs meet these goals.

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Chadha, Sanjay. "A real-time system for multi-transputer systems". Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29465.

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Two important problems namely a versatile, efficient communication system and allocation of processors to processes are analysed. An efficient communication system has been developed, in which a central controller, the bus-master, dynamically configures the point-to-point network formed by the links of the transputers. The links are used to form a point-to-point network. An identical kernel resides on each of the nodes. This kernel is responsible for all communications on behalf of the user processes. It makes ConnectLink and ReleaseLink requests to the central controller and when the connections are made it sends the the messages through the connected link to the destination node. If direct connection to the destination node cannot be made then the message is sent to an intermediate node, the message hops through intermediate nodes until it reaches the destination node. The communication system developed provides low latency communication facility, and the system can easily be expanded to include a large number of transputers without increasing interprocess communication overhead by great extent. Another problem, namely the Module Assignment Problem (MAP) is an important issue at the time of development of distributed systems. MAPs are computationally intractable, i.e. the computational requirement grows with power of the number of tasks to be assigned. The load of a distributed system depends on both module execution times, and intermodule communication cost (IMC). If assignment is not done with due consideration, a module assignment can cause computer saturation. Therefore a good assignment should balance the processing load among the processors and generate minimum inter-processor communication (IPC) ( communication between modules not residing on the same processor). Since meeting the deadline constraint is the most important performance measure for RTDPS, meeting the response time is the most important criteria for module assignment. Understanding this we have devised a scheme which assigns processes to processors such that both response time constraints and periodicity constraints are met. If such an assignment is not possible, assignment would fail and an error would be generated. Our assignment algorithm does not take into consideration factors such as load balancing. We believe that the most important factor for RTDPS is meeting the deadline constraints and that's what our algorithm accomplishes.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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net, Andrea@jardineorr, i Andrea Jardine Orr. "Remote Indigenous Housing System A Systems Social Assessment". Murdoch University, 2005. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20051103.134917.

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Indigenous Australians make up a mere 2.4% of the population of whom around a quarter live in remote and very remote parts of Australia. The poor state of Indigenous housing in remote areas is generally acknowledged as one of Australias most intractable housing problems. The thesis examines why the remote Indigenous housing system does not meet the housing needs of Indigenous people in remote areas and discusses an alternative system. The aim of the thesis is to understand why the remote Indigenous housing system is not meeting peoples needs, despite policy statements that emphasise empowerment and partnerships. This understanding of the current remote Indigenous housing system involved placing it in historical, policy and international contexts and examining the current attempts to rationalise and streamline the system. The service-delivery concepts of supply-driven (externally prescribed) and demand-responsive (community determined) are applied to remote Indigenous housing. The characteristics of successful remote Indigenous housing, namely Indigenous control and self-determination, an enabling environment and a culturally responsive system, are developed and found to be characteristic of a demand-responsive system. The research hypothesises that the remote Indigenous housing systems supply-driven focus is largely responsible for the housing needs of Indigenous people in remote areas not being met. This was tested using the new methodology of a Systems Social Assessment which is developed by combining Social Assessment and Checklands Soft Systems Methodology. This methodology illustrated that the current remote Indigenous housing system has a supply-driven focus where the housing solutions are controlled and largely provided from an external source, in this case the Commonwealth and State governments and their agents. The thesis discusses an alternative demand-responsive focus where remote communities have more control over the nature and delivery of their housing that may prove more successful.

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Pinnix, Justin Everett. "Operating System Kernel for All Real Time Systems". NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010310-181302.

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PINNIX, JUSTIN EVERETT. Operating System Kernel for All Real Time Systems.(Under the direction of Robert J. Fornaro and Vicki E. Jones.)

This document describes the requirements, design, and implementation of OSKAR, ahard real time operating system for Intel Pentium compatible personal computers.OSKAR provides rate monotonic scheduling, fixed and dynamic priority scheduling,semaphores, message passing, priority ceiling protocols, TCP/IP networking, and globaltime synchronization using the Global Positioning System (GPS). It is intended toprovide researchers a test bed for real time projects that is inexpensive, simple tounderstand, and easy to extend.

The design of the system is described with special emphasis on design tradeoffs made toimprove real time requirements compliance. The implementation is covered in detail atthe source code level. Experiments to qualify functionality and obtain performanceprofiles are included and the results explained.

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Mahajan, Nikhil Ravindra. "A System Simulator For Shipboard Electrical Distribution Systems". NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010911-103858.

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The development of a distribution system simulator that can model new power electronic devices as well as new novel distribution schemes, such as DC distribution has been donehere. The simulator adopts the Electro-Magnetic Transient Programs (EMTP) platform to facilitate the simulation. Basic power electronic building blocks have been developed to extend the capabilities of the EMTP. These blocks include a rectifier module, a DC buck converter module, a 3-phase inverter module and a single-phase inverter module. The paper shows simulation of a new distribution scheme for naval ships to illustrate that such a simulator facilitates the study of new distribution system designs, especially theprotection and control issues associated with new designs.

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