Дисертації з теми "Modeling System Theory"
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Fong, Nga Hin Benjamin. "Modeling, Analysis,and Design of Responsive Manufacturing Systems Using Classical Control Theory." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/27269.
Повний текст джерелаPh. D.
Markovsky, Ivan. "Exact and approximate modeling of linear systems : a behavioral approach /." Philadelphia, Pa. : Society for Industrial and Applied Mathematics, 2006. http://www.loc.gov/catdir/enhancements/fy0708/2005057537-d.html.
Повний текст джерелаCho, Tae Ho. "A hierarchical, modular simulation environment for flexible manufacturing system modeling." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186144.
Повний текст джерелаOulton, David. "Selected papers on colorimetric theory and colour modeling." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/selected-papers-on-colorimetric-theory-and-colour-modeling(e4f13600-5d8e-45a8-afce-846647130dfb).html.
Повний текст джерелаBalestrini, Robinson Santiago. "A modeling process to understand complex system architectures." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29621.
Повний текст джерелаCommittee Chair: Mavris, Dimitri; Committee Member: Bishop, Carlee; Committee Member: German, Brian; Committee Member: Nixon, Janel; Committee Member: Schrage, Daniel. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Cho, Jeongho. "Multiple modeling and control of nonlinear systems with self-organizing maps." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0008180.
Повний текст джерелаXiong, Xiaolu. "Theory and Practice: Improving Retention Performance through Student Modeling and System Building." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/139.
Повний текст джерелаGopal, Kartik. "Modeling and Optimization of Hospital Transportation System." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1481314351566885.
Повний текст джерелаQi, Chenkun. "Modeling of nonlinear distributed parameter system for industrial thermal processes /." access full-text access abstract and table of contents, 2009. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-meem-b23750911f.pdf.
Повний текст джерела"Submitted to Department of Manufacturing Engineering and Engineering Management in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves 167-187)
Moon, Kyungjin. "Self-reconfigurable ship fluid-network modeling for simulation-based design." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34733.
Повний текст джерелаZhang, Hanzhong. "A moving boundary problem in a distributed parameter system with application to diode modeling." Access restricted to users with UT Austin EID, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3037035.
Повний текст джерелаBider, Ilia. "State-Oriented Business Process Modeling : Principles, Theory and Practice." Doctoral thesis, KTH, Computer and Systems Sciences, DSV, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3375.
Повний текст джерелаIn the last 50 years, a considerable amount of research workhas been completed in the mathematical system theory and theoryof control. Implementation of the results from this researchinto practice has drastically decreased the production costs.Most production processes are highly automated, and the use ofrobots in industry is growing. As far as office, or businessprocesses are concerned, the situation is quite different.Though the office workers and sales personnel have obtainedmuch help from the modern computers, the office and salesprocesses are far behind the production processes on the levelof automation. The computers are used in the office mainly tohelp in performing various activities, e.g., to write a letter,to print an invoice, to complete a transaction, etc. Thecontrol of the business processes in the office remains, to alarge extent, manual. There is a lot to gain if the controlover business processes could be automated, at leastpartially.
The material presented in this thesis is aimed to supportthe following hypothesis: "The ideas worked out in the Mathematical system theory formodeling and controlling physical processes can be successfullyused for modeling and controlling business processes." Oneof the main ideas of mathematical system theory is to considera process as a set of valid trajectories in a state space, andthis idea is the keystone for the thesis. The thesis startswith reformulating the state-oriented approach for the domainof business processes to show what kind of sate space can beused in this domain. First, the approach is introducedinformally by means of an example. Next, a possibleformalization adjusted to the properties of business processesis discussed. Then, experimental evidences that the methodsuggested in the thesis can be used in practice are presented.The suggested method is also compared with other methods ofbusiness process modeling to find out the areas where it hasadvantages over the other methods. In the conclusion, theresults are summarized, and plansfor the future are drawn.
Most of the material included in the thesis has beenpublished and presented at international conferences. Thecontribution of this thesis consists in organizing the materialin support of the main hypothesis.
Cunis, Torbjørn. "Modeling, analysis, and control for upset recovery : from system theory to unmanned aircraft flight." Thesis, Toulouse, ISAE, 2019. http://www.theses.fr/2019ESAE0027.
Повний текст джерелаUpset flight dynamics are characterised by unstable, highly nonlinear behaviourof the aircraft aerodynamic system. As upsets often lead to in-flight loss-of-control (LOC-I) accidents,it still poses a severe threat to today’s commercial aviation. Contributing to almost everysecond fatality in civil aviation while representing merely 10% of the total accidents (both fataland nonfatal), the International Air Transport Association has classified LOC-I as the “highestrisk to aviation safety”. Considerable effort has been undertaken in response by academics,manufacturers, commercial airlines, and authorities to predict and prevent LOC-I events as wellas recover from upset conditions into the nominal flight envelope. As result, researchers fromboth aeronautical engineering and system theory have made significant contributions towardsaviation safety; however, approaches from engineering and theory are rather disparate. This thesistherefore focuses on the application and transfer of system theoretical results to engineeringapplications.In particular, we have found simple polynomial models for aircraft dynamics, despite commonin the system theoretical literature, failing to represent full-envelope aerodynamics accurately.Advanced fitting methods such as multi-variate splines, on the other hand, are unsuitable forsome of the proposed functional analysis methods. Instead, a simple piecewise defined polynomialmodel proves to be accurate in fitting the aerodynamic coefficients for low and high angles ofattack. State-of-the-art bifurcation analysis and analysis based on sum-of-squares programmingtechniques are extended for this class of models and applied to a piecewise equations of motionof the Generic Transport Model (GTM). In the same spirit, we develop a model for a small,fixed-wing aircraft based on static continuous fluid dynamics (CFD) simulations. In the lackof dynamic coefficients from CFD, we identify a pitch-damping model comparing bifurcationanalysis and flight data that predicts well dynamics and stability of deep-stall flight.Previous developments in sum-of-squares programming have been promising for the certificationof nonlinear dynamics and flight control laws, yet their application in aeronauticalengineering halted. In combination with piecewise polynomial modeling, we are able to re-applythis technique for analysis in an accurate but computationally feasible manner to verify stablerecovery. Subsequently, we synthesise inherently stable linear and polynomial feedback laws fordeep-stall recovery. We further extend the estimation of regions of attraction for the piecewisepolynomial model towards an improved algorithm for local stability analysis of arbitrary switchingsystems, such as splines, thus making our work available for future analysis and certificationof highly accurate algebraic models.With highly nonlinear dynamics and critical state and input constraints challenging upsetrecovery, model-predictive control (MPC) with receding horizon is a powerful approach. MPCfurther provides a mature stability theory contributing towards the needs for flight control certification.Yet, for realistic control systems careful algebraic or semi-algebraic considerationsare necessary in order to rigorously prove closed-loop stability. Employing sum-of-squares programming,we provide a stability proof for a deep-stall recovery strategy minimising the loss ofaltitude during recovery. We further demonstrate MPC schemes for recovery from spiral andoscillatory spin upsets in an uncertain environment making use of the well-known and freelyavailable high-fidelity GTM desktop simulation.The results of this thesis are thus promising for future system theoretic approaches in modeling,analysis, and control of aircraft upset dynamics for the development and certification offlight control systems in order to prevent in-flight loss-of-control accidents
Koch, Patrick N. "Hierarchical modeling and robust synthesis for the preliminary design of large scale complex systems." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16651.
Повний текст джерелаFanizza, Giovanna. "Modeling and Model Reduction by Analytic Interpolation and Optimization." Doctoral thesis, Stockholm : Engineering sciences, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9125.
Повний текст джерелаBottegal, Giulio. "Modeling, estimation and identification of stochastic systems with latent variables." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423358.
Повний текст джерелаL’argomento principale di questa tesi è l’analisi di modelli statici e dinamici in cui alcune variabili non sono accessibili a misurazioni, nonostante esse influenzino l’evoluzione di certe osservazioni. Questi modelli trovano applicazione in molte discipline delle scienze e dell’ingegneria, come ad esempio l’automatica, le telecomunicazioni, le scienze naturali, la biologia e l’econometria e sono stati studiati approfonditamente nel campo dell’identificazione dei modelli. E' ben noto che sistemi con variabili inaccessibili - o latenti, spesso soffrono di una mancanza di unicità nella rappresentazione. In altre parole, in generale ci sono molti modelli dello stesso tipo che possono descrivere un dato insieme di osservazioni, come ad esempio variabili misurabili di ingresso-uscita. Questo è ben noto, ed è stato studiato a fondo per una classe speciale di modelli lineari, chiamata modelli a spazio di stato. In questa tesi ci si focalizza su due classi particolari di sistemi stocastici a variabili latenti: i modelli generalized factor analysis e i modelli errors-in-variables. Per queste classi di modelli ci sono ancora alcuni problemi irrisolti legati alla non unicità della rappresentazione e chiarificare questi problemi è di importanza fondamentale per la loro identificazione. Poiché solitamente i modelli matematici necessitano ti essere stimati da dati sperimentali, è essenziale risolvere il problema della non unicità per il loro utilizzo nell’inferenza statistica (identificazione di modelli) da dati misurati.
Heinen, Garrett David. "Modeling and Charging Control of a Lithium Ion Battery System for Solar Panels." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1745.
Повний текст джерелаBiroscak, Brian J. "Use of System Dynamics Modeling to Explicate the Theory-of-Change of a Social Marketing Innovation." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5184.
Повний текст джерелаPark, Seung In. "Modeling Social Group Interactions for Realistic Crowd Behaviors." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19297.
Повний текст джерелаMany social science field studies inform us that crowds are typically composed of multiple social groups (James, 1953; Coleman and James, 1961; Aveni, 1977). These observations indicate that one component of the complexity of crowd dynamics emerges from the presence of various patterns of social interactions within small groups that make up the crowd. Hence, realism in a crowd simulation may be enhanced when virtual characters are organized in multiple social groups, and exhibit human-like coordination behaviors.
Motivated by the need for modeling groups in a crowd, we present a multi-agent model for large crowd simulations that incorporates socially plausible group behaviors. A computational model for multi-agent coordination and interaction informed by well- established Common Ground theory (Clark, 1996; Clark and Brennan, 1991) is proposed. In our approach, the task of navigation in a group is viewed as performing a joint activity which requires maintaining a state of common ground among group members regarding walking strategies and route choices. That is, group members communicate with, and adapt their behaviors to each other in order to maintain group cohesiveness while walking. In the course of interaction, an agent may present gestures or other behavioral cues according to its communicative purpose. It also considers the spatiotemporal conditions of the agent-group\'s environment in which the agent interacts when selecting a kind of motions.
With the incorporation of our agent model, we provide a unified framework for crowd simulation and animation which accommodates high-level socially-aware behavioral realism of animated characters. The communicative purpose and motion selection of agents are consistently carried through from simulation to animation, and a resulted sequence of animated character behaviors forms not merely a chain of reactive or random gestures but a socially meaningful interactions.
We conducted several experiments in order to investigate the impact of our social group
interaction model in crowd simulation and animation. By showing that group communicative behaviors have a substantial influence on the overall distribution of a crowd, we demonstrate the importance of incorporating a model of social group interaction into multi-agent simulations of large crowd behaviors. With a series of perceptual user studies, we show that our model produces more believable behaviors of animated characters from the viewpoint of human observers.
Ph. D.
Thompson, Kelsie. "Using Video Modeling to Improve Staff Implementation of the PEAK Relational Training System." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7585.
Повний текст джерелаLee, Timothy J. "CHITRA93 : a tool to analyze system behavior by visualizing and modeling ensembles of traces /." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10242009-020057/.
Повний текст джерелаBlack, Derek J. "Development and feasibility of economical hardware and software in control theory application." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/38170.
Повний текст джерелаDepartment of Mechanical and Nuclear Engineering
Dale E. Schinstock
Control theory is the study of feedback systems, and a methodology investigated by many engineering students throughout most universities. Because of control theory's broad and interdisciplinary nature, it necessitates further study by application through experimental learning and laboratory practice. Typically, the hardware used to connect the theoretical aspects of controls to the practical can be expensive, big, and time consuming to the students and instructors teaching on the equipment. Alternatively, using cheaper sensors and hardware, such as encoders and motor drivers, can obfuscate the collected data in a way that creates a disconnect between developed theoretical models and actual system results. This disconnect can dissuade the idea that systems can and will follow a modeled behavior. This thesis attempts to assess the feasibility of a piece of laboratory apparatus named the NERMLAB. Multiple experiments will be conducted on the NERMLAB system and compared against time-tested hardware to demonstrate the practicality of the NERMLAB system in control theory application.
Layshot, Nicholas Joseph. "MODELING OF A GYRO-STABILIZED HELICOPTER CAMERA SYSTEM USING NEURAL NETWORKS." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/421.
Повний текст джерелаWarshawsky, David. "A system of systems flexibility framework: A method for evaluating designs that are subjected to disruptions." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54277.
Повний текст джерелаKhan, Imran. "Hajj crowd management: Discovering superior performance with agent-based modeling and queueing theory." Arabian Journals of Business and Management Review, 2012. http://hdl.handle.net/1993/13698.
Повний текст джерелаGarvey, Matthew Sidney. "Performance Analysis of a Dual-Use Secure Radarcomm System in Non-Line-of-Sight Environments: Theory & Modeling." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1596212392792427.
Повний текст джерелаRobuschi, Camilla. "L'estetico quale strumento di modellizzazione nella prospettiva della biosemiotica." Doctoral thesis, Università degli studi di Trento, 2022. https://hdl.handle.net/11572/355841.
Повний текст джерелаZobaer, M. S. "Physiology-Based Modeling of Sleep and Wake Phenomena in the Human Brain." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18643.
Повний текст джерелаOsman, Esam. "Developing strategic information system planning model in Libya organisations." Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/1173.
Повний текст джерелаSenturk, Sertan. "Computational modeling of improvisation in Turkish folk music using Variable-Length Markov Models." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42761.
Повний текст джерелаMaertens, Miet. "Economic modeling of agricultural land-use patterns in forest frontier areas : theory, empirical assessment and policy implications for Central Sulawesi, Indonesia /." Berlin : dissertation.de, 2003. http://www.gbv.de/dms/zbw/380100983.pdf.
Повний текст джерелаPapp, John Laszlo. "SIMULATION OF TURBULENT SUPERSONIC SEPARATED BASE FLOWS USING ENHANCED TURBULENCE MODELING TECHNIQUES WITH APPLICATION TO AN X-33 AEROSPIKE ROCKET NOZZLE SYSTEM." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin962118912.
Повний текст джерелаYang, Xige. "MATHEMATICAL MODELS OF PATTERN FORMATION IN CELL BIOLOGY." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1542236214346341.
Повний текст джерелаGastin, Paul. "Un modele distribue." Paris 7, 1987. http://www.theses.fr/1987PA077072.
Повний текст джерелаGrombein, Thomas [Verfasser]. "Gravity forward modeling with a tesseroid-based Rock-Water-Ice approach – Theory and applications in the context of the GOCE mission and height system unification / Thomas Grombein." Karlsruhe : KIT Scientific Publishing, 2017. http://www.ksp.kit.edu.
Повний текст джерелаYin, Weiwei. "The role and regulatory mechanisms of nox1 in vascular systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44833.
Повний текст джерелаAugeraud, Michel. "Systel-D : un modèle et une méthode d'analyse et de conception des systèmes de communication prenant en compte leurs aspects dynamiques." Poitiers, 1989. http://www.theses.fr/1989POIT2263.
Повний текст джерелаZhang, Aixiu (Monica). "Transactional Distance in Web-based College Learning Environments: Toward Measurement and Theory Construction." VCU Scholars Compass, 2003. http://scholarscompass.vcu.edu/etd_retro/94.
Повний текст джерелаSingh, Minerva. "Design of a system to support policy formulation for sustainable biofuel production." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:db054d43-6359-45cd-af82-a71abd2b288b.
Повний текст джерелаGrombein, Thomas [Verfasser], and B. [Akademischer Betreuer] Heck. "Gravity forward modeling with a tesseroid-based Rock-Water-Ice approach – Theory and applications in the context of the GOCE mission and height system unification / Thomas Grombein ; Betreuer: B. Heck." Karlsruhe : KIT-Bibliothek, 2017. http://d-nb.info/1130246566/34.
Повний текст джерелаKesting, Arne. "Microscopic Modeling of Human and Automated Driving: Towards Traffic-Adaptive Cruise Control." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1204804167720-57734.
Повний текст джерелаIn der Arbeit wird ein neues verkehrstelematisches Konzept für ein verkehrseffizientes Fahrverhalten entwickelt und als dezentrale Strategie zur Vermeidung und Auflösung von Verkehrsstaus auf Richtungsfahrbahnen vorgestellt. Die operative Umsetzung erfolgt durch ein ACC-System, das um eine, auf Informationen über die lokale Verkehrssituation basierende, automatisierte Fahrstrategie erweitert wird. Die Herausforderung bei einem Eingriff in das individuelle Fahrverhalten besteht - unter Berücksichtigung von Sicherheits-, Akzeptanz- und rechtlichen Aspekten - im Ausgleich der Gegensätze Fahrkomfort und Verkehrseffizienz. Während sich ein komfortables Fahren durch große Abstände bei geringen Fahrzeugbeschleunigungen auszeichnet, erfordert ein verkehrsoptimierendes Verhalten kleinere Abstände und eine schnellere Anpassung an Geschwindigkeitsänderungen der umgebenden Fahrzeuge. Als allgemeiner Lösungsansatz wird eine verkehrsadaptive Fahrstrategie vorgeschlagen, die ein ACC-System mittels Anpassung der das Fahrverhalten charakterisierenden Parameter umsetzt. Die Wahl der Parameter erfolgt in Abhängigkeit von der lokalen Verkehrssituation, die auf der Basis der im Fahrzeug zur Verfügung stehenden Informationen automatisch detektiert wird. Durch die Unterscheidung verschiedener Verkehrssituationen wird ein temporärer Wechsel in ein verkehrseffizientes Fahrregime (zum Beispiel beim Herausfahren aus einem Stau) ermöglicht. Machbarkeit und Wirkungspotenzial der verkehrsadaptiven Fahrstrategie werden im Rahmen eines mikroskopischen Modellierungsansatzes simuliert und hinsichtlich der kollektiven Verkehrsdynamik, insbesondere der Stauentstehung und Stauauflösung, auf mehrspurigen Richtungsfahrbahnen bewertet. Die durchgeführte Modellbildung, insbesondere die Formulierung eines komplexen Modells des menschlichen Fahrverhaltens, ermöglicht eine detaillierte Analyse der im Verkehr relevanten kollektiven Stabilität und einer von der Stabilität abhängigen stochastischen Streckenkapazität. Ein tieferes Verständnis der Stauentstehung und -ausbildung wird durch das allgemeine Konzept der Engstelle erreicht. Dieses findet auch bei der Entwicklung der Strategie für ein stauvermeidendes Fahrverhalten Anwendung. In der Arbeit wird die stauvermeidende und stauauflösende Wirkung eines individuellen, verkehrsadaptiven Fahrverhaltens bereits für geringe Ausstattungsgrade nachgewiesen. Vor dem Hintergrund einer zu erwartenden Verbreitung von ACC-Systemen ergibt sich damit eine vielversprechende Option für die Steigerung der Verkehrsleistung durch ein teilautomatisiertes Fahren. Der entwickelte Ansatz einer verkehrsadaptiven Fahrstrategie ist unabhängig vom ACC-System. Er erweitert dessen Funktionalität im Hinblick auf zukünftige, informationsbasierte Fahrerassistenzsysteme um eine neue fahrstrategische Dimension. Die lokale Interpretation der Verkehrssituation kann neben einer verkehrsadaptiven ACC-Regelung auch der Entwicklung zukünftiger Fahrerinformationssysteme dienen
Leontas, Angela Zoi. "Modeling queueing systems." CSUSB ScholarWorks, 2006. https://scholarworks.lib.csusb.edu/etd-project/3101.
Повний текст джерелаZaini, Raafat Mahmoud. "Modeling Manifest and Latent Structures in a University: Understanding Resources and Dissent Dynamics." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/435.
Повний текст джерелаFrancis, John Charles. "Qualitative system theory : a systems approach to modelling complex physical processes." Thesis, Heriot-Watt University, 1986. http://hdl.handle.net/10399/1080.
Повний текст джерелаBoldt, Frank. "A Framework for Modeling Irreversible Processes Based on the Casimir Companion." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-145179.
Повний текст джерелаThermodynamische Prozesse in endlicher Zeit sind im Allgemeinen irreversibel. Es gibt jedoch Möglichkeiten, diese Irreversibilität zu umgehen. Ein kanonisches Ensemble eines speziellen quantenmechanischen Systems kann zum Beispiel auf eine ganz spezielle Art und Weise gesteuert werden, sodass nach endlicher Zeit T wieder eine kanonische Besetzungverteilung hergestellt ist, sich aber dennoch die Energie des Systems geändert hat (E(0) ungleich E(T)). Solche Prozesse erlauben das Ändern thermodynamischer Größen (Ensemblemittelwerte) der erwähnten speziellen Systeme in endlicher Zeit und auf eine adiabatische und reversible Art. Man nennt diese Art von speziellen Prozessen Shortcuts to Adiabaticity und die speziellen Systeme hamiltonsche Systeme mit dynamischer Algebra. Die vorliegende Dissertation hat zum Ziel den Ursprung dieser Shortcuts to Adiabaticity zu analysieren und eine Methodik zu entwickeln, die es erlaubt irreversible thermodynamische Prozesse adequat mittels dieser speziellen Systeme zu modellieren. Dazu wird deren besondere Eigenschaft ausgenutzt, die kanonische Invarianz, d.h. ein kanonisches Ensemble bleibt kanonisch bezüglich hamiltonscher Dynamik. Der Ursprung dieser Invarianz liegt in der dynamischen Algebra, die mit Hilfe der Theorie der Lie-Gruppen näher betrachtet wird. Dies erlaubt, eine weitere besondere Eigenschaft abzuleiten: Die Ensemblemittelwerte unterliegen ebenfalls den Symmetrien, die die dynamische Algebra widerspiegelt. Bei näherer Betrachtung befinden sich alle Trajektorien der Ensemblemittelwerte auf einer Mannigfaltigkeit, die durch den sogenannten Casimir Companion beschrieben wird. Darüber hinaus wird nicht-hamiltonsche/dissipative Dynamik betrachtet, welche zu einer Deformation der Mannigfaltigkeit führt. Abschließend wird eine Zusammenfassung der grundlegenden Methodik zur Modellierung irreversibler Prozesse mittels hamiltonscher Systeme mit dynamischer Algebra gegeben. Zum besseren Verständnis wird ein ausführliches Anwendungsbeispiel dieser Methodik präsentiert, in dem die zeitoptimale Steuerung eines Ensembles des harmonischen Oszillators zwischen zwei Gleichgewichtszuständen sowie zwischen Gleichgewichts- und Nichtgleichgewichtszuständen abgeleitet wird
Liu, Yukang. "Virtualized Welding Based Learning of Human Welder Behaviors for Intelligent Robotic Welding." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/51.
Повний текст джерелаKesting, Arne. "Microscopic Modeling of Human and Automated Driving: Towards Traffic-Adaptive Cruise Control." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A24070.
Повний текст джерелаIn der Arbeit wird ein neues verkehrstelematisches Konzept für ein verkehrseffizientes Fahrverhalten entwickelt und als dezentrale Strategie zur Vermeidung und Auflösung von Verkehrsstaus auf Richtungsfahrbahnen vorgestellt. Die operative Umsetzung erfolgt durch ein ACC-System, das um eine, auf Informationen über die lokale Verkehrssituation basierende, automatisierte Fahrstrategie erweitert wird. Die Herausforderung bei einem Eingriff in das individuelle Fahrverhalten besteht - unter Berücksichtigung von Sicherheits-, Akzeptanz- und rechtlichen Aspekten - im Ausgleich der Gegensätze Fahrkomfort und Verkehrseffizienz. Während sich ein komfortables Fahren durch große Abstände bei geringen Fahrzeugbeschleunigungen auszeichnet, erfordert ein verkehrsoptimierendes Verhalten kleinere Abstände und eine schnellere Anpassung an Geschwindigkeitsänderungen der umgebenden Fahrzeuge. Als allgemeiner Lösungsansatz wird eine verkehrsadaptive Fahrstrategie vorgeschlagen, die ein ACC-System mittels Anpassung der das Fahrverhalten charakterisierenden Parameter umsetzt. Die Wahl der Parameter erfolgt in Abhängigkeit von der lokalen Verkehrssituation, die auf der Basis der im Fahrzeug zur Verfügung stehenden Informationen automatisch detektiert wird. Durch die Unterscheidung verschiedener Verkehrssituationen wird ein temporärer Wechsel in ein verkehrseffizientes Fahrregime (zum Beispiel beim Herausfahren aus einem Stau) ermöglicht. Machbarkeit und Wirkungspotenzial der verkehrsadaptiven Fahrstrategie werden im Rahmen eines mikroskopischen Modellierungsansatzes simuliert und hinsichtlich der kollektiven Verkehrsdynamik, insbesondere der Stauentstehung und Stauauflösung, auf mehrspurigen Richtungsfahrbahnen bewertet. Die durchgeführte Modellbildung, insbesondere die Formulierung eines komplexen Modells des menschlichen Fahrverhaltens, ermöglicht eine detaillierte Analyse der im Verkehr relevanten kollektiven Stabilität und einer von der Stabilität abhängigen stochastischen Streckenkapazität. Ein tieferes Verständnis der Stauentstehung und -ausbildung wird durch das allgemeine Konzept der Engstelle erreicht. Dieses findet auch bei der Entwicklung der Strategie für ein stauvermeidendes Fahrverhalten Anwendung. In der Arbeit wird die stauvermeidende und stauauflösende Wirkung eines individuellen, verkehrsadaptiven Fahrverhaltens bereits für geringe Ausstattungsgrade nachgewiesen. Vor dem Hintergrund einer zu erwartenden Verbreitung von ACC-Systemen ergibt sich damit eine vielversprechende Option für die Steigerung der Verkehrsleistung durch ein teilautomatisiertes Fahren. Der entwickelte Ansatz einer verkehrsadaptiven Fahrstrategie ist unabhängig vom ACC-System. Er erweitert dessen Funktionalität im Hinblick auf zukünftige, informationsbasierte Fahrerassistenzsysteme um eine neue fahrstrategische Dimension. Die lokale Interpretation der Verkehrssituation kann neben einer verkehrsadaptiven ACC-Regelung auch der Entwicklung zukünftiger Fahrerinformationssysteme dienen.
Stoyanova, Petia Venkova. "Knowing and modelling of human enterprises : a holistic approach." Thesis, University of Sunderland, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364526.
Повний текст джерелаSchröder, Jochen. "Modelling, state observation and diagnosis of quantised systems /." Berlin [u.a.] : Springer, 2003. http://www.loc.gov/catdir/enhancements/fy0813/2002030222-d.html.
Повний текст джерелаMyklebust, Odd. "Enterprise Modelling supported by Manufacturing Systems Theory." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-83.
Повний текст джерелаThere exist today a large number of enterprise models or enterprise modelling approaches. In a study of standards and project developed models there are two approaches: CIMOSA “The Open Systems Architecture for CIM” and GERAM, “Generalised Enterprise Reference Architecture”, which show a system orientation that can be further followed as interesting research topics for a system theory oriented approach for enterprise models.
In the selection of system theories, manufacturing system theory is interesting and promising to adapt or extend to further synthesising and usage of enterprise models.
Today the design and creation of an enterprise model are based on a given architecture and available even though this is not always practical. When it comes to execution and operational phases of the model, the possibilities are more limited.
Manufacturing system theory [Bjørke 1995] was developed to describe system-oriented approaches to manufacturing systems including product configuration and design processes. This includes a large number of disciplines like mechanics, cybernetics, material science etc. on the physical side and planning activities, economical aspects and optimisation processes on the human side. The theory is based on geometry as the foundation and the methods within the theory are related to concepts of connections. The analysis of the manufacturing systems is the prime area for the usage of this theory and is important in order to bring a science base into manufacturing. But the theory can be used in a more generic way.
The theory of logic [Møller 1995] relates also to the concept of connections, being expressed as logic arguments. The theory is generic and has been applied to different model approaches e.g. product configuration, scheduling and planning, railway logic control. This theory of logic is also fully applicable in manufacturing system theory. The theory of logic and the manufacturing systems theory are both based on geometry or more precisely expressed the geometric funded theory of connections.
The main requirement for the enterprise model architecture to be used together with the theory of logic is that it can be divided into a 3D orthogonal space with unique defined axis. In this work a 3D space based upon product, process and organisational axis is preferred, also called the PPO-model. In this study combination of the enterprise modelling architecture, GERAM ISO 15704, and the theory of logic are used to show how systems theory can be used in control and management of operational phases of enterprise models. The usage of logic theory within enterprise modelling gives solutions on management and control issues in an operational phase of the product model. If is important to emphasis that this is not an approach for populating or transfer of operative data into a model. The integration of theses theories are illustrated through examples that show modelled entities of an enterprise in operation within areas of:
- Execution of operative manufacturing unit
- Organisational and strategic issues
- Enterprise planning with aspects of uncertainty
An own PPO model for feature based integration within product design and process planning has been developed to show that alternative more simple and detailed architectures also can be used.