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Dissertations / Theses on the topic 'Systems Theory'
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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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Tse, Pak-hoi Isaac. "Dynamical systems theory and school change." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37626218.
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Tse, Pak-hoi Isaac, and 謝伯開. "Dynamical systems theory and school change." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37626218.
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Nikoukhah, Ramine. "System theory for two point boundary value descriptor systems." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/15004.
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Thesis (Elec. E.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: p. 131-133.<br>by Ramine Nikoukhah.<br>Elec.E.
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MAHMOOD, ASIF. "System of Systems Approach in Production: Theory to Action." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2530093.
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System of Systems (SoS) is a novel approach in practical field which has been widely studied and applied recognizably in military context by department of defense (DoD). But being versatile, the approach has a lot of potential to deliver in various other areas as well, for example, it is now on the verge to transcend the boundaries of defense system, and ready to be applied in industrial sector. This manuscript based dissertation mainly investigates and explores the last phrased facet, and offers a common platform for operational
research and complex System of Systems. At the outset, focus of the study is to understand and pave the way to build theory of SoS. The established thoughts are marshaled
while new insights are developed to shed light on the emerging concept of SoS. It tries to help resolve the identity crisis of SoS by proposing two edges of chaos, that is, SoS
and monolithic systems self-organize at two opposite edges. Upon this understanding, it traces out the incapacitation of traditional military techniques for asymmetric warfare.
The research also spotlights the necessity of creation of a generic System of Systems Architecture Framework (SoSAF) in line with the Department of Defense Architecture Framework (DoDAF).
Then the academic research shifts its accent towards production systems. First of all, it attempts to answer the fundamental question whether production system falls under
the scope of SoS or not, by devising and utilizing a general purpose framework for categorizing systems. It applies the SoS concepts in this field using the earlier proposed SoSAF paradigm to introduce a unique architecture for production system in three designing process phases. After that the research moves ahead to come up with a pioneering
approach for managing risks of large complex SoS. The new methodology of System of Systems Axiomatic Risk Management (SoSARM) put forward here is an Axiomatic Risk
(AR) based decomposition for resolving coupled risks. The developed theory and ideas have also been demonstrated for a typical production system following a step by step hierarchical approach which proved to be a very simple yet comprehensive concept to handle interdependent risks of multiple domains.
In order to narrow the research sphere, the dissertation goes on to unearth the need to radicalize Lean Manufacturing (LM) with state of the art SoS concepts. Towards this
objective, a new management framework has been designed and elaborated for an ‘SoS Lean’ or ‘Smart Lean’ system by assimilating SoS approach with LM. Aimed at supplementing
to the SoS Engineer’s repertoire, System of Systems Dynamics-SoSD (adapted from system dynamics) philosophy has also been proposed to model and simulate the aspects of SoS with the expectation to further enrich the notion. Based on the theory and frameworks established, rest of the research exploration focuses specifically on textile industry for their in depth assay and validity by performing two shop floor case studies.
The first case study demonstrates a holistic perspective of a textile weaving mill located in Pakistan using stock and flow diagrams of SoSD. SoSD continuous modeling and simulation interventions proved to be a very effective modus operandi in strategic decision making support for capacity expansion of a weaving company. Then for the second case study accomplished at a spinning mill, a Smart Lean Spinning Framework was envisaged amalgamating SoS ideas with the prudently screened and selected tools of LM that are apt to textile industry. Subsequently, the proposed framework was modeled and simulated through DES to evaluate the impacts of diverse parameters culminating in successful implementation of the Smart Lean.
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Rodrigues, Duarte Polónia. "Applications of systems theory in the theory of codes." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/11109.
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Mestrado em Matemática e Aplicações<br>Os códigos the Reed Solomon são códigos cíclicos não binários com símbolos
de código num corpo de Galois. Eles foram descobertos em 1960
por L. Reed e G. Solomon. Nas décadas após a sua descoberta, os códigos
de RS gozaram de inúmeras aplicações. Este trabalho é maioritariamente
focado nos algoritmos de codi cação e descodi cação dos códigos RS,
analisando uma relação entre a teoria dos códigos e uma técnica de identi
cação desenvolvida no âmbito da abordagem comportamental á teoria
de sistemas.<br>The Reed Solomon codes (RS codes) are non-binary cyclic codes with
code symbols from a Galois eld. They were discovered in 1960 by I. Reed
and G. Solomon. In the decades since their discovery, RS codes have
enjoyed countless applications. This work is mainly focused on encoding
and decoding RS codes algorithms, analyzing a relation between coding
theory and an identi cation technique developed within the behavioral
approach to systems theory.
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Sentís, Manuel Lorenzo. "Quantum theory of open systems." Zürich : ETH, Eidgenössische Technische Hochschule Zürich, Institut für Theoretische Physik, 2002. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=172.
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Rodgers, Geoffrey John. "Topics in disordered systems theory." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329087.
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Zimbidis, Alexandros A. "Control theory and insurance systems." Thesis, City University London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287673.
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Brown, Irwin T. J. "Espoused theory versus theory in use : the case of strategic information systems planning." Doctoral thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/5638.
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Includes bibliographical references.<br>Strategic information systems planning (SISP) has been a key issue for Information Systems (IS) managers over several decades. As a consequence, much research has been devoted to studing it. Noted concerns have been the gap between opinion and practice, and the absence of a sound theory to underpin it. Attempts at developing an overarching theoretical framework have typically used an input-process-output variance model as the basis. Rich processual elements of SISP, and the existence of feedback loops, which could then lead to improved practice, have however, been noted as absent from these models. Synthesis and integration of the above concerns lead to the goal of this study, which was to develop rich processual theories about SISP. The grounded theory methodology was ideally suited to this purpose as it aims to develop theory that is well grounded in data, and therefore very much reflective of the reality presented by the data.
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Leontas, Angela Zoi. "Modeling queueing systems." CSUSB ScholarWorks, 2006. https://scholarworks.lib.csusb.edu/etd-project/3101.
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The thesis introduces the theory of queueing systems and demonstrates its applicability to real life problems. It discusses (1) Markovian property and measures of effectiveness with exponential interarrival and service times; (2) Erlang service times, and a single server; (3) different goodness-of-fit tests that can be used to determine whether the exponential distribution is appropriate for a given set of data. A single server queueing system with exponential interarrival times and Erlang service times is simulated using Visual Basic for Applications (VBA).
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Jackson, Billy Davis John M. "A general linear systems theory on time scales transforms, stability, and control /." Waco, Tex. : Baylor University, 2007. http://hdl.handle.net/2104/5066.
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Oswald, W. Andrew (William Andrew). "Understanding technology development processes theory & practice." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/90699.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 75-77).<br>Technology development is hard for management to understand and hard for practitioners to explain, however it is an essential component of innovation. While there are standard and predictable processes for product development, many of these techniques don't apply well to technology development. Are there common processes for technology development that can make it predictable, or is it unpredictable like basic research and invention? In this thesis, after building a foundation by looking at product development processes, I survey some of the literature on technology development processes and compare them to a handful of case studies from a variety of industries. I then summarize the observations from the cases and build a generic model for technology development that can be used to provide insights into how to monitor and manage technology projects. One of the observations from the product development literature is that looping and iteration is problematic for establishing accurate schedules which becomes one of the fundamental disconnects between management and engineering. Technologists rely heavily on iteration as a tool for gaining knowledge and combined with other risks, technology development may appear "out of control". To mitigate these risks, technologists have developed a variety of approaches including: building a series of prototypes of increasing fidelity and using them as a form of communication, simultaneously developing multiple technologies as a hedge against failure or predicting and developing technologies they think will be needed outside of formal channels. Finally, I use my model to provide some insights as to how management can understand technology development projects. This gives technologists and non-technical managers a common ground for communication.<br>by W. Andrew Oswald.<br>S.M. in Engineering and Management
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Gao, Zu-Cheng. "The theory of fluxgate sensor systems." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/27078.
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In recent years, the fluxgate sensor system has become increasingly important for the measurement of magnetic fields. It has become the instrument of choice for some aeronomy research programs, for ocean bottom deployment and for vessel detection by seafloor sensors. It has considerable potential for airborne magnetometry and gradient measurements. This renewed interest arises because the capabilities of the instrument are now known to be much superior to those achieved by earlier designs, and because there is a continued need for sensors with a vector capability. Added practical advantages accrue because it is a rugged instrument, economical to manufacture and has low power requirements.
The advances in technology have not been accompanied by corresponding advances in the theoretical understanding of the fluxgate. Prior to publications from the University of British Columbia, most representations were cumbersome, incomplete and sometimes incorrect.
The approach presented for the first time in this thesis introduces a gating function which straightforwardly represents the fluxgate mechanism separately from the complications of hysteresis and demagnetization. The characteristics of the gating function are easily measurable and can be regarded as the performance indices of the sensor. The approach also presents a general state equation which is valid not only for single sensors, but also for symmetric multiple sensors (e.g. gradiometers). Then the complete solution set (the monodromy, the general solution and periodic solution) is solved for the state equation.
Based on the theories of Floquet-Lyapunov and of Hsu, the instability criterion and the method of calculation are investigated. The generalized instability map, illustrated in a parameter plane, is useful for the design of stable fluxgate sensor systems. The instability has been also checked in the phase space. The sensitivity map presented through this approach can be used to calculate the real signal for a fluxgate sensor with any value of parameters. Moreover, this approach not only formulates an integrated fluxgate theory, but also provides a guide to the selection of operating parameters and components for a practical design.<br>Science, Faculty of<br>Earth, Ocean and Atmospheric Sciences, Department of<br>Graduate
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Armstrong, Craig Keith. "Hamilton-Jacobi Theory and Superintegrable Systems." The University of Waikato, 2007. http://hdl.handle.net/10289/2340.
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Hamilton-Jacobi theory provides a powerful method for extracting the equations of motion out of some given systems in classical mechanics. On occasion it allows some systems to be solved by the method of separation of variables. If a system with n degrees of freedom has 2n - 1 constants of the motion that are polynomial in the momenta, then that system is called superintegrable. Such a system can usually be solved in multiple coordinate systems if the constants of the motion are quadratic in the momenta. All superintegrable two dimensional Hamiltonians of the form H = (p_x)sup2 + (p_y)sup2 + V(x,y), with constants that are quadratic in the momenta were classified by Kalnins et al [5], and the coordinate systems in which they separate were found. We discuss Hamilton-Jacobi theory and its development from a classical viewpoint, as well as superintegrability. We then proceed to use the theory to find equations of motion for some of the superintegrable Hamiltonians from Kalnins et al [5]. We also discuss some of the properties of the Poisson algebra of those systems, and examine the orbits.
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Coceal, Omduth. "Conformal field theory and turbulent systems." Thesis, Queen Mary, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243367.
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Head, David Andrew. "Topics in non-equilibrium systems theory." Thesis, Brunel University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246169.
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Qizilbash, M. "Corruption, political systems and economic theory." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358574.
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Halsall, Francis. "Art, art history and systems-theory." Thesis, University of Glasgow, 2004. http://theses.gla.ac.uk/5392/.
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Kalogeropoulos, G. E. "Matrix pencils and linear systems theory." Thesis, City University London, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355580.
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Abolfathe, Beikidezfuli Salman. "Quantum proof systems and entanglement theory." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50594.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2009.<br>Includes bibliographical references (p. 99-106).<br>Quantum complexity theory is important from the point of view of not only theory of computation but also quantum information theory. In particular, quantum multi-prover interactive proof systems are defined based on complexity theory notions, while their characterization can be formulated using LOCC operations. On the other hand, the main resource in quantum information theory is entanglement, which can be considered as a monotonic decreasing quantity under LOCC maps. Indeed, any result in quantum proof systems can be translated to entanglement theory, and vice versa. In this thesis I mostly focus on quantum Merlin-Arthur games as a proof system in quantum complexity theory. I present a new complete problem for the complexity class QMA. I also show that computing both the Holevo capacity and the minimum output entropy of quantum channels are NP-hard. Then I move to the multiple-Merlin-Arthur games and show that assuming some additivity conjecture for entanglement of formation, we can amplify the gap in QMA(2) protocols. Based on the same assumption, I show that the QMA(k)-hierarchy collapses to QMA(2). I also prove that QMAlog(2), which is defined the same as QMA(2) except that the size of witnesses is logarithmic, with the gap n-(3+e) contains NP. Finally, motivated by the previous results, I show that the positive partial transpose test gives no bound on the trace distance of a given bipartite state from the set of separable states.<br>by Salman Abolfathe Beikidezfuli.<br>Ph.D.
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Guerriero, Carmine. "Endogenous legal systems : theory and evidence." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608761.
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Fretwell, Paul. "Equivalence transformations in linear systems theory." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/33259.
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There is growing interest in infinite frequency structure of linear systems, and transformations preserving this type of structure. Most work has been centred around Generalised State Space (GSS) systems. Two constant equivalence transformations for such systems are Rosenbrock's Restricted System Equivalence (RSE) and Verghese's Strong Equivalence (str.eq.). Both preserve finite and infinite frequency system structure. RSE is over restrictive in that it is constrained to act between systems of the same dimension. While overcoming this basic difficulty str.eq. on the other hand has no closed form description. In this work all these difficulties have been overcome. A constant pencil transformation termed Complete Equivalence (CE) is proposed, this preserves finite elementary divisors and non-unity infinite elementary divisors. Applied to GSS systems CE yields Complete System Equivalence (CSE) which is shown to be a closed form description of str.eq. and is more general than RSE as it relates systems of different dimensions. Equivalence can be described in terms of mappings of the solution sets of the describing differential equations together with mappings of the constrained initial conditions. This provides a conceptually pleasing definition of equivalence. The new equivalence is termed Fundamental Equivalence (FE) and CSE is shown to be a matrix characterisation of it. A polynomial system matrix transformation termed Full Equivalence (fll.e.) is proposed. This relates general matrix polynomials of different dimensions while preserving finite and infinite frequency structure. A definition of infinite zeros is also proposed along with a generalisation of the concept of infinite elementary divisors (IED) from matrix pencils to general polynomial matrices. The IED provide an additional method of dealing with infinite zeros.
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Park, Young Wook. "Large deviation theory for queueing systems." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39858.
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Schirmer, Sonja G. "Theory of control of quantum systems /." view abstract or download file of text, 2000. http://wwwlib.umi.com/cr/uoregon/fullcit?p9963453.
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Thesis (Ph. D.)--University of Oregon, 2000.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 98-99). Also available for download via the World Wide Web; free to University of Oregon users. Address: http://wwwlib.umi.com/cr/uoregon/fullcit?p9963453.
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Urbani, Pierfrancesco. "Theory of fluctuations in disordered systems." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112019.
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Dans cette thèse nous avons étudié de nombreux aspects de la théorie des systèmes désordonnés. En particulier, nous avons étudié les systèmes vitreux. La description détaillée des systèmes désordonnés et vitreux est un problème ouvert en physique de la matière condensée. Dans le cadre de la théorie de champ moyen pour les verres structuraux nous avons étudié la théorie des fluctuations proche de la transition vitreuse dynamique. L’étude des fluctuations peut etre fait avec le formalisme statique de la théorie de répliques. Nous avons fait cela en introduisant une théorie des champs pour la transition vitreuse à partir du potentiel microscopique entre les particules. Nous avons étudié dans ce cadre les fluctuations au niveau gaussien et nous avons évalués les exposants critiques dans ces approximations. Nous avons aussi étudié la région de validité de la prédiction gaussienne avec l’introduction d’un critère de Ginzburg pour la transition vitreuse. Les résultats que nous avons obtenues ne sont valides que dans la région β. Pour obtenir des resultats dans la région α nous avons étudié la pseudodynamique de Boltzmann que a été introduit par Franz and Parisi. Nous sommes parti des équations de Ornstein-Zernike et nous avons obtenu un ensemble d’équations dynamiques. En utilisant l’approximation Hypernetted Chain nous avons obtenu un ensemble complet d’équations qui sont très similaires aux équations de la théorie de mode-coupling. La troisième partie de la thèse porte sur l’étude des états amorphes des sphères dures en hautes dimensions. Pour obtenir les exposants dynamique dans ce cas, nous avons étudié la stabilité du diagramme de phase 1RSB (one-step-replica-symmetry-breaking). Nous avons découvert que ce diagramme de phase possède une région où la solution 1RSB est instable. La région où la solution 1RSB est instable est connectée avec la description théorique de la physique de jamming des sphères dures et nous avons montré que l’instabilité 1RSB est responsable d’une transition de phase en haute densité. Cette transition s’appelle la transition de Gardner. Nous avons cherché une solution 2RSB et nous avons vu qu’il existait un point en densité après lequel on peut avoir une solution 2RSB (et aussi fullRSB). Nous avons étudié le diagramme de phase 2RSB dans la limite de jamming où la pression devient infini. Après la solution 2RSB nous avons cherché à décrire la solution fullRSB. Nous avons écrit les équations fullRSB et nous avons découvert qu’elles sont identiques aux equations que l’on a dans le cas de un modèle de verres de spins qui s’appelle modèle de Sherrington et Kirkpatrick. Nous avons aussi étudié la solution numerique des équations fullRSB dans la limite de jamming. Cette solution montre beaucoup des choses intéressantes. La plus importante est le comportement du mean square displacement dans la limite de jamming. Si l’on regard les résultats numériques et éxperimentaux, il semble que le plateau de le mean square displacement s’approche a zero comme la pression à un exposant proche de −3/2. Nous avons vu que la solution numérique des équations fullRSB est en mesure de reproduire ce comportement. La quatrième partie de la thése a porté sur la dynamique de mode-coupling dans le régime où la transition vitreuse devient continue<br>In this thesis we have studied many aspects of the physics of disordered and glassy systems. The first part of the work is about the theory of dynamical fluctuations in the beta regime. When a system undergoes a dynamical arrest, it can be studied by introducing an appropriate dynamical correlation function that plays the role of the order parameter of the transition. To understand the collective effects underlying the glass transition we have studied the fluctuations of the order parameter on a time scale where the system is relaxed in a typical metastable glassy state. To do this we have seen that coming from the glass phase the system develops critical fluctuations with a diverging correlation length at the mean field level. We have thus derived an effective field theory by focusing only on them. This field theory can be used firstly to derive the mode-coupling exponent parameter that controls the relaxation of the dynamical correlation function when the system relaxes in a metastable glassy state. Moreover we can give a Ginzburg Criterion that can be used to determine the region of validity of the Gaussian approximation. These considerations are valid in the beta regime. To clarify what happens in the alpha regime we have studied a quasi-equilibrium construction, called Boltzmann-Pseudodynamics, recently introduced in order to describe with static techniques the long time regime of glassy dynamics. We have extended this formalism to structural glasses by producing a new set of dynamical equations. We have done this in the simplest approximation scheme that is called Hypernetted Chain. Two results have been obtained : firstly, we have computed the mode-coupling exponent parameter and we have shown that it coincides with the one obtained with the formalism of the first part of the thesis ; secondly we have studied the aging regime and we have derived that the condition that determines the fluctuation-dissipation ratio is a marginal stability one. In the third part of the thesis we have studied the theory of amorphous states of hard spheres in high dimensions. Hard spheres provide simple models of glasses and they are extensively studied for the jamming transition. In our framework jammed states can be thought as infinite pressure limit of metastable glassy states. During the last years it has been derived a mean field theory of hard spheres based on the 1RSB assumption on the structure of the free energy landscape. However it has been realized that this construction is inconsistent for what concerns the property of the packings at jamming. In the present work we have firstly investigated the possibility of an instability of the 1RSB solution and we have actually found that the 1RSB solution is unstable in the jamming part of the phase diagram. At the same time we have been able to compute the mode-coupling exponent parameter for this system. In order to go beyond the 1RSB solution we have first tried a 2RSB ansatz and then a fullRSB solution. We have derived a set of variational equations that are very close to the ones that have been derived in the Sherrington-Kirkpatrick model. We have solved numerically the equations and we have shown that the fullRSB solution seems to predict that the plateau value of the mean square displacement scale as the pressure to a power close to 3/2 as it seems to be predicted by scaling arguments and in contrast with the 1RSB predictions that show a scaling with the inverse of the pressure. The last chapter of the thesis is on the mode-coupling theory when the glass transition is becoming continuous. We have been able to show that in such a situation a detailed characterization of the solution of the equations can be obtained in the long time regime
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Beach, Joni Leigh. "A Grounded Theory Study of Systems Theory and Clothing and Textiles Theories for the Development of a Dynamic, Complex Human Systems Theory." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/29373.
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Metatheory, a study of theories, was the focus of this research study. A qualitative, grounded theory research design was used to examine documents on systems theory found outside the field of Clothing and Textiles (CT) and the social psychological theories used within CT. Recognizing the dynamic, complex nature of the human system and its interaction with multiple other systems led to the question of: What multidimensional theoretical framework would address this complexity and provide an expanded view for research and education in the field of CT?
Data were collected from documentary materials pertaining to systems theory and CT theories by the researcher in a library search of the literature. Four domains were identified from the data that were collected and analyzed. The domains were Relationship, Process, Organization, and Outcomes. Then, a holistic, systemic theoretical framework and the Human-Environment Systems model were developed from the integration of systems theory and the CT theories. The model was designed to give a general, abstract visual representation of the theoretical concepts of a holistic, systemic view of the human-environment unit. A discussion of the complex societal issue of body image and eating disorders in females served to illustrate the use of the proposed theoretical framework and model. Recommendations were made for future exploration of the use of a holistic perspective for research and educational practices in the field of CT in order to address dynamic, complex human-environment problems.<br>Ph. D.
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Akister, Jane. "Systems theory and attachment theory in social work education and practice." Thesis, Anglia Ruskin University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427479.
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Hansen, Claire Gwendoline. "Shakespeare and Complexity Theory." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13667.
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Abstract: This thesis argues that Shakespeare is a complex system and that the framework of complexity theory can be of use to Shakespeare studies and literary studies more broadly. Moving from smaller subsystems to the global Shakespeare system itself, this thesis explores how Shakespeare’s narrative, play composition, pedagogy and cultural presence can be re-examined through a complexivist lens. By adopting different methodological approaches across the chapters, this thesis also refines the application of complexity theory and trials implementation strategies for the humanities. The Introduction offers a foundation for complexity theory in literary studies, including core characteristics and methods of implementation. Chapter One reads dance in A Midsummer Night’s Dream as a series of complex interactions which create or respond to moments of crisis or ‘bounded instability’. Chapter Two conceptualises Titus Andronicus as a self-organised complex system and interrogates three self-organising interactions: the relationships between co-authors; authors and space; and fictional and environmental space. Chapter Three’s pedagogical focus reconsiders the role of unexpected emergence in the teaching of Shakespeare and in The Merchant of Venice. Chapter Four examines the function of system attractors in the real-world system of Shakespeare in Stratford-upon-Avon and in the systems of Julius Caesar. Each chapter demonstrates complexivism as an illuminating framework for Shakespeare studies, identifying complex behavioural patterns in the plays, their contexts, and in literary criticism. This thesis also demonstrates complexity theory’s interdisciplinary applicability in fields of inquiry including the philosophy of dance, authorship studies, ecocriticism and cultural studies. ‘Shakespeare and Complexity Theory’ offers a novel and valuable framework to enrich our understanding of Shakespeare, and lays the foundation for complexity theory in Shakespeare studies and the humanities.
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Francis, John Charles. "Qualitative system theory : a systems approach to modelling complex physical processes." Thesis, Heriot-Watt University, 1986. http://hdl.handle.net/10399/1080.
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Cristiani, Daniel L. "The form of the system : the politics of Luhmann's systems theory /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3089473.
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Puhakainen, P. (Petri). "A design theory for information security awareness." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514281144.
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When implementing their information security solutions organizations have typically focused on technical and procedural security measures. However, from the information systems (IS) point of view, this is not enough: effective IS security requires that users are aware of and use the available security measures as described in their organizations' information security policies and instructions. Otherwise, the usefulness of the security measures is lost.
The research question of this thesis is to explore how IS users' compliance with IS security policies and instructions can be improved. Solving this research question is divided into two steps. Since there is a lack of a comprehensive review of existing IS security awareness approaches, the first step aims at reviewing the existing IS security awareness approaches. This kind of analysis is useful for practitioners as they do not necessarily have the time to go through a large body of literature. For scholars, such an analysis shows what areas of IS security awareness have been studied, and to where the need for future research is of greatest importance.
The second step in this dissertation is to address the shortcomings detected by the analysis by developing three novel design theories for improving IS users' security behavior: (1) IS security awareness training, (2) IS security awareness campaigns, and (3) punishment and reward. These design theories aim to help practitioners to develop their own IS security awareness approaches. Finally, testing of the design theory for IS security awareness training (1) in two action research interventions is described. The results of the interventions suggest that this design theory provides a useful and applicable means for developing a training program in organizations. In addition, the results provide empirically evaluated information regarding the obstacles to user compliance with IS security policies and instructions.
In the action research studies described, the goal was to solve practical problems experienced by the host organizations and to understand them and the results achieved from the viewpoint of theory. Consequently, the results as such can not be generalized, but they are of use in the host organizations in planning and delivering subsequent IS security awareness training programs. In addition, the results are utilizable in similar organizations as a point of departure in planning IS security awareness training programs.
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Mansouri-Samani, Masoud. "Monitoring of distributed systems." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362441.
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Oates, Kimberly L. "A study of control system radii for approximations of infinite dimensional systems." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10102009-020109/.
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Richardson, Sandra. "HEALTHCARE INFORMATION SYSTEMS:DESIGN THEORY, PRINCIPLES AND APPLICATION." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3182.
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Healthcare information systems (HISs), as a class of systems, are not currently addressed in the MIS literature. This is in spite of a sharp increase in use over the past few years, and the uniquely qualified role that MIS has in the development of, impact and general understanding of HISs. In this project the design science paradigm frames the development of a set of design principles derived from the synthesis of the design literature, ethics literature, and professional guidelines, from both the medical and computing professions. The resulting principles are offered to address the design of healthcare information systems. Action research, a widely accepted methodology for testing design principles derived from the design science paradigm, is employed to test the HIS principles and to implement change in a healthcare organization through the use of an HIS. The action research project was a collaborative effort between a Central Florida hospice and the researcher, the result of which was an advanced directives decision support system. The system was design to meet a number of organizational goals that ranged from tracking compliance with federal regulations to increasing the autonomy of the patients that used the system. The result is a set of tested design principles and lessons learned from both anticipated and unanticipated consequences of the action research project.<br>Ph.D.<br>Department of Management Information Systems<br>Business Administration<br>Business Administration: Ph.D.
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Episkopou, D. M. "The theory and practice of information systems methodologies : A grounded theory of methodological evolution." Thesis, University of East Anglia, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380960.
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Bhattacharyya, Anirban. "Application of effective field theory to density functional theory for finite systems." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124116299.
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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 210 p.; also includes graphics (some col.). Includes bibliographical references (p. 205-210). Available online via OhioLINK's ETD Center
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Leflaive, Xavier. "A contemporary theory of organizations : toward a theory of reflexive social systems." Thesis, University of Cambridge, 1993. https://www.repository.cam.ac.uk/handle/1810/272637.
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Myklebust, 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.
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<p>There 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.</p><p>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.</p><p>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.</p><p><b>Manufacturing system theory</b> [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.</p><p><b>The theory of logic</b> [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.</p><p>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:</p><p> - Execution of operative manufacturing unit</p><p> - Organisational and strategic issues</p><p> - Enterprise planning with aspects of uncertainty</p><p>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.</p>
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Hoydis, Jakob. "Random matrix theory for advanced communication systems." Phd thesis, Supélec, 2012. http://tel.archives-ouvertes.fr/tel-00765458.
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Advanced mobile communication systems are characterized by a dense deployment of different types of wireless access points. Since these systems are primarily limited by interference, multiple-input multiple-output (MIMO) techniques as well as coordinated transmission and detection schemes are necessary to mitigate this limitation. Thus, mobile communication systems become more complex which requires that also the mathematical tools for their theoretical analysis must evolve. These must be able to take the most important system characteristics into account, such as fading, path loss, and interference. The aim of this thesis is to develop such tools based on large random matrix theory and to demonstrate their usefulness with the help of several practical applications, such as the performance analysis of network MIMO and large-scale MIMO systems, the design of low-complexity polynomial expansion detectors, and the study of random beamforming techniques as well as multi-hop relay and double-scattering channels. The methods developed in this work provide deterministic approximations of the system performance which become arbitrarily tight in the large system regime with an unlimited number of transmitting and receiving devices. This leads in many cases to simple and close approximations of the finite-size system performance and allows one to draw relevant conclusions about the most significant parameters. One can think of these methods as a way to provide a deterministic abstraction of the physical layer which substantially reduces the system complexity. Due to this complexity reduction, it is possible to carry out a system optimization which would be otherwise intractable.
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Cederström, Agneta. "Compromised spin systems and random matrix theory." Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/1261.
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Random Matrix Theory considers symmetries in the QM energy matrix. The differential geometric implications of matrix groups and their relation to many particle quantum mechanical manifolds is explored. The RMT reduction of phase space is described by co-adjoint orbits on Lie matrix groups. Disorder is identified as a statistical mixture of entangled states. The system' s density matrix eigenvalues remain invariant. The spectrum of eigenvalues in an asymmetric quartic matrix potential is calculated in the unitary ensemble. This measure is interpreted to be indicative of the density of pseudo-particle states in compromised spin systems. The splitting of the spectral density into two or more intervals is taken as some type of phase transition. Finally, the temperature-doping phase diagrams of the ceramic compounds (La,Nd,Eu)2- xSrxCuO4 is partitioned into the three RMT symmetry classes by mapping onto the appearance and disappearance of an NMR/NQR signal.
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Taylor, Daniel J. "Correlated electronic structure theory for challenging systems." Thesis, Heriot-Watt University, 2015. http://hdl.handle.net/10399/3004.
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The photochemistry of molecules can be investigated computationally, and this provides great insight into the underlying chemistry and physics. Such computational approaches are challenging and can pose many difficulties compared to ground state methodologies. Care must be taken to accurately describe these systems, as some lowlevel approximate methods can fail. The geometrical and electronic structures (TiO2)n clusters (n=1-4) have been investigated. These are of enormous technological interest as wide band-gap semiconductors yet the nature of electronic transitions in nano-sized clusters has yet to be fully elucidated. Structures of the neutral closed-shell, radical cationic and radical anionic clusters at each size are described and rationalised in terms of the pseudo-Jahn- Teller effect. We have used high-level response theory to set benchmarks for such systems. The TiO2 monomer is the simplest of the clusters studied yet proves a stern test for many lower order ab-initio methods. It is shown that high-level methods are required to properly describe this simple molecule. The Monte Carlo Configuration Interaction method attempts to combine the power of Full CI with a scalability that allows it to be used to study much larger systems. It can be systematically improved and can approach the accuracy of the Full CI method. This method is applied here to investigate potential energy surfaces and multipole moments of a range of small but challenging systems.
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Demaeyer, Jonathan. "Escape rate theory for noisy dynamical systems." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209440.
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The escape of trajectories is a ubiquitous phenomenon in open dynamical systems and stochastic processes. If escape occurs repetitively for a statistical ensemble of trajectories, the population of remaining trajectories often undergoes an exponential decay characterised by the so-called escape rate. Its inverse defines the lifetime of the decaying state, which represents an intrinsic property of the system. This paradigm is fundamental to nucleation theory and reaction-rate theory in chemistry, physics, and biology.<p><p>In many circumstances, escape is activated by the presence of noise, which may be of internal or external origin. This is the case for thermally activated escape over a potential energy barrier and, more generally, for noise-induced escape in continuous-time or discrete-time dynamics. <p><p>In the weak-noise limit, the escape rate is often observed to decrease exponentially with the inverse of the noise amplitude, a behaviour which is given by the van't Hoff-Arrhenius law of chemical kinetics. In particular, the two important quantities to determine in this case are the exponential dependence (the ``activation energy') and its prefactor.<p><p>The purpose of the present thesis is to develop an analytical method to determine these two quantities. We consider in particular one-dimensional continuous and discrete-time systems perturbed by Gaussian white noise and we focus on the escape from the basin of attraction of an attracting fixed point.<p><p>In both classes of systems, using path-integral methods, a formula is deduced for the noise-induced escape rate from the attracting fixed point across an unstable fixed point, which forms the boundary of the basin of attraction. The calculation starts from the trace formula for the eigenvalues of the operator ruling the time evolution of the probability density in noisy maps. The escape rate is determined by the loop formed by two heteroclinic orbits connecting back and forth the two fixed points in a two-dimensional auxiliary deterministic dynamical system. The escape rate is obtained, including the expression of the prefactor to van't Hoff-Arrhenius exponential factor./L'échappement des trajectoires est un phénomène omniprésent dans les systèmes dynamiques ouverts et les processus stochastiques. Si l'échappement se produit de façon répétitive pour un ensemble statistique de trajectoires, la population des trajectoires restantes subit souvent une décroissance exponentielle caractérisée par le taux d'échappement. L'inverse du taux d'échappement définit alors la durée de vie de l'état transitoire associé, ce qui représente une propriété intrinsèque du système. Ce paradigme est fondamental pour la théorie de la nucléation et, de manière générale, pour la théorie des taux de transitions en chimie, en physique et en biologie.<p><p>Dans de nombreux cas, l'échappement est induit par la présence de bruit, qui peut être d'origine interne ou externe. Ceci concerne en particulier l'échappement activé thermiquement à travers une barrière d'énergie potentielle, et plus généralement, l'échappement dû au bruit dans les systèmes dynamiques à temps continu ou à temps discret.<p><p>Dans la limite de faible bruit, on observe souvent une décroissance exponentielle du taux d'échappement en fonction de l'inverse de l'amplitude du bruit, un comportement qui est régi par la loi de van't Hoff-Arrhenius de la cinétique chimique. En particulier, les deux quantités importantes de cette loi sont le coefficient de la dépendance exponentielle (c'est-à-dire ``l'énergie d'activation') et son préfacteur.<p><p>L'objectif de cette thèse est de développer une théorie analytique pour déterminer ces deux quantités. La théorie que nous présentons concerne les systèmes unidimensionnels à temps continu ou discret perturbés par un bruit blanc gaussien et nous considérons le problème de l'échappement du bassin d'attraction d'un point fixe attractif. Pour s'échapper, les trajectoires du système bruité initialement contenues dans ce bassin d'attraction doivent alors traverser un point fixe instable qui forme la limite du bassin.<p><p>Dans le présent travail, et pour les deux types de systèmes, une formule est dérivée pour le taux d'échappement du point fixe attractif en utilisant des méthodes d'intégrales de chemin. Le calcul utilise la formule de trace pour les valeurs propres de l'opérateur gouvernant l'évolution temporelle de la densité de probabilité dans le système bruité. Le taux d'échappement est déterminé en considérant la boucle formée par deux orbites hétéroclines liant dans les deux sens les deux points fixes dans un système dynamique auxiliaire symplectique et bidimensionnel. On obtient alors le taux d'échappement, comprenant l'expression du préfacteur de l'exponentielle de la loi de van't Hoff-Arrhenius.<br>Doctorat en Sciences<br>info:eu-repo/semantics/nonPublished
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Hughes, Lindsay P. "Regional systems of innovation, theory and practice." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0025/MQ51362.pdf.
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Frenken, Koen. "Understanding product innovation using complex systems theory." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/61019.
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Khan, Imran. "QUANTUM THEORY OF MANY BOSE ATOM SYSTEMS." Connect to Online Resource-OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=Toledo1195507917.
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Stuk, Stephen Paul. "Multivariable systems theory for Lanchester type models." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/24171.
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Lu, Chun-Yi David. "Theory of viscoelastic response in bilayer systems." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389849.
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Wong, Woon Kwong. "The twistor theory of the AKS systems." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294333.
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Moore, David John. "Dialogue game theory for intelligent tutoring systems." Thesis, Leeds Beckett University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333697.
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