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Erten, Nur. "De l'οntοlοgie fοrmelle à la phénοménοlοgie. Une lecture husserlienne de la mathématisatiοn de la cοnnaissance." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC011.
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L’objectif de ce travail est de situer l'ontologie formelle dans la phénoménologie husserlienne. Pour ce faire, nous proposons de faire une lecture de l'ontologie formelle qui se distingue d’une approche purement théorique ou mathématique, en la replaçant dans l’histoire de la philosophie telle que conçue par Edmund Husserl. Nous débutons par une analyse sur la mathématisation de la logique, ce qui nous conduit sous la dominance des mathématiques, à la genèse de l’idée de la théorie des théories, à une théorie d’objet sans objet. Ensuite, nous élargissons notre perspective pour examiner la mathématisation des sciences, surtout la mathématisation de la physique. En analysant la crise des sciences, nous mettons en lumière le rapport entre les sciences et leur rapport obligatoire avec la philosophie selon Husserl. À travers une lecture historique allant de Platon à Galilée, centrée sur l’ontologie formelle, nous montrons les critiques essentielles adressées aux sciences modernes par Husserl, et pourquoi, malgré leur développement et leur rigueur mathématique, les sciences empiriques, en particulier la physique, ne peuvent pas fonder une théorie de tout. Enfin, notre étude examine le rapport entre l’ontologie formelle et les ontologies matérielles. Nos analyses dans cette étude justifient la nécessité de la phénoménologie comme la science rigoureuseThe aim of this work is to situate formal ontology within Husserlian phenomenology. To this end, we propose a reading of formal ontology as distinct from a purely theoretical or mathematical approach, by placing it in the history of philosophy as conceived by Edmund Husserl. We begin with an analysis of the mathematization of logic, which leads us, under the dominance of mathematics, to the genesis of the idea of the theory of theories, to a theory of object without object. Next, we broaden our perspective to examine the mathematization of the sciences, especially the mathematization of physics. By analyzing the crisis of the sciences, we highlight the relationship between the sciences and their obligatory relationship with philosophy, according to Husserl. Through a historical reading from Plato to Galileo, centered on formal ontology, we show the essential criticisms addressed to modern sciences by Husserl, and why, despite their development and mathematical rigor, empirical sciences, particularly physics, cannot found a theory of everything. Finally, our study investigates the relationship between formal ontology and material ontologies. Our analyses in this study justify the necessity of phenomenology as the rigorous science
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Henderson, Kelsey. "THE EFFECTS OF PRIOR KNOWLEDGE ACTIVATION ON LEARNER RETENTION OF NEW CONCEPTS IN LEARNING OBJECTS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3716.
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Establishing relationships between a learner's prior knowledge and any new concepts he or she will be expected to learn is an important instructional activity. Learning objects are often devoid of such activities in an attempt to maintain their conciseness and reusability in a variety of instructional contexts. The purpose of this study was to examine the efficacy of using questioning as a prior knowledge activation strategy in learning objects. Previous research on the use prior knowledge activation strategies supports their effectiveness in helping to improve learner retention. Approaches such as questioning, advance organizers, and group discussions are examples of techniques used in previous studies. Participants enrolled in a Navy engineering curriculum were randomly assigned to two groups (experimental and comparison). The experimental group was exposed to a prior knowledge activation component at the start of session I, while the comparison group received no treatment. Participants in both groups were tested at three different times during the course of the study– the pretest, at the start of session 1, posttest I, at the conclusion of session1, and posttest II, during session 2. The findings indicate that the prior knowledge activation strategy did not result in statistically significant differences between the levels of retention gained by the experimental and comparison groups. Due to administrative constraints experienced during the course of the study, statistical power was not achieved due to an insufficiently sized sample. Potential limitations and implications for future research directions are described.Ph.D.
Department of Educational Research, Technology and Leadership
Education
Education PhD
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Campbell, Douglas Ian. "A Theory of Consciousness." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195372.
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It is shown that there is an unconditional requirement on rational beings to adopt “reflexive” beliefs, these being beliefs with a very particular sort of self-referential structure. It is shown that whoever adopts such beliefs will thereby adopt beliefs that imply that a certain proposition, ᴪ, is true. From the fact that there is this unconditional requirement on rational being to adopt beliefs that imply ᴪ, it is concluded that ᴪ is knowable a priori. ᴪ is a proposition that says, in effect, that one’s own point of view is a point in space and time that is the point of view of some being who has reflexive beliefs. It is argued that this information that is contained in ᴪ boils down to the information that one’s point of view is located at a point in the world at which there is something that is “conscious” in a certain natural and philosophically interesting sense of that word. In other words, a theory of consciousness is defended according to which an entity is conscious if and only if it has reflexive beliefs.
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China, Jaques Lefebvre. "Attachment and object relations theory." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336335.
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Melis, Giacomo. "The epistemic defeat of a priori and empirical certainties : a comparison." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225946.
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I explore the traditional contention that a priori epistemic warrants enjoy some sort of higher epistemic security than empirical warrants. By focusing on warrants that might plausibly be called 'basic', and by availing myself of an original taxonomy of epistemic defeaters, I defend a claim in the vicinity of the traditional contention. By discussing some examples, I argue that basic a priori warrants are immune to some sort of empirical defeaters, which I describe in detail. An important by-product of my investigation is a novel theory of epistemic defeaters, according to which only agents able to engage in higher-order epistemic thinking can suffer undermining defeat, while wholly unreflective agents can, in principle, suffer overriding defeat.
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Rasile, Karen D. "Object Relations Theory and Personal Construct Theory: Rapprochement Opportunity." Thesis, North Texas State University, 1987. https://digital.library.unt.edu/ark:/67531/metadc500772/.
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Empirical investigation of the tenets of Object Relations Theory is recent. This study of the theoretical convergence between Object Relations Theory and Personal Construct Theory brought a new direction to the empirical investigation. It was hypothesized that individuals who displayed a well developed level of object relations, as measured by Object Relations Theory, would also display a highly adaptive blend of cognitive complexity and ordination, as described by Personal Construct Theory, and vice versa. A correlational analysis of personality measures on 136 college students approached but did not attain statistical significance. Results indicated no significant theoretical convergence between Object Relations Theory and Personal Construct Theory. Further research is warranted only if greater variability in sample age, life experience, and psychopathology is assured.
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Christiansen, Jesse G. "Apriority in naturalized epistemology investigation into a modern defense /." unrestricted, 2007. http://etd.gsu.edu/theses/available/etd-11272007-193136/.
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Thesis (M.A.)--Georgia State University, 2007.Title from file title page. George W. Rainbolt, committee chair; Jessica Berry, Steve Jacobson, committee members. Electronic text (43 p.) : digital, PDF file. Description based on contents viewed Jan 18, 2008. Includes bibliographical references (p. 43).
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Whicker, John H. "Object-Oriented Writing Theory: Writers, Texts, Ecologies." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1406656088.
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Foa', Alessandro. "Object Detection in Object Tracking System for Mobile Robot Application." Thesis, KTH, Matematisk statistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252561.
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This thesis work takes place at the Emerging Technologies department of Volvo Construction Equipment(CE), in the context of a larger project which involves several students. The focus is a mobile robot built by Volvo for testing some AI features such as Decision Making, Natural Language Processing, Speech Recognition, Object Detection. This thesis will focus on the latter. During last 5 years researchers have built very powerful deep learning object detectors in terms of accuracy and speed. This has been possible thanks to the remarkable development of Convolutional Neural Networks as feature extractors for Image Classification. The purpose of the report is to give a broad view over the state-of-the-art literature of Object Detection, in order to choose the best detector for the robot application Volvo CE is working with, considering that the robot's real-time performance is a priority goal of the project. After comparing the different methods, YOLOv3 seems to be the best choice. Such framework will be implemented in Python and integrated with an object tracking system which returns the 3D position of the objects of interest. The result of the whole system will be evaluated in terms of speed and precision of the resulting detection of the objects.Detta arbete utförs hos Emerging Technologies på Volvo Construction Equipment(CE) i ett stort projekt som involverar flera studenter. Arbetes fokus är att använda en robot skapad av Volvo för att testa olika AI tekniker såsom beslutsfattandeg, naturlig språkbehandling, taligenkänning, objektdetektering. Denna uppsats kommer att behandla den sistnämnda tekniken. Under de 5 senaste åren har forskning visat att det är möjligt att bygga kraftfulla deep learning object detectors vad gäller att korrekt identifera samt snabbt detektera objekt. Allt detta är möjligt tack vare ramverket Convolutional Neural Networks som agerar som feature extractors för Image Classification. Målet med denna rapport är att ge en generell överblick över det senaste inom objektdetektering för att på så sätt välja den mest lämpliga metoden att implementera på en robot hos Volvo CE. Att ta hänsyn till realtidspresetanda är ett av målen med projeketet. Efter att ha utvärderat olika metoder valdes YOLOv3. Detta ramverk implmenterades med Python och integrerades med ett objektidentiferingssystem vilket retunerar en position i tre dimentioner. Hela systemet kommer att utvärderas med hänsyn till hastighet och presition.
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Kassios, Ioannis T. "Theory theory (and an attempt to orient objections to object orientation)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62965.pdf.
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Zheng, Yi. "An object-oriented data model for hypertext." Thesis, University of Kent, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384890.
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Dillon, Craig. "A theory of scene understanding and object recognition." Thesis, Curtin University, 1996. http://hdl.handle.net/20.500.11937/194.
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This dissertation presents a new approach to image interpretation which can produce hierarchical descriptions of visually sensed scenes based on an incrementally learnt hierarchical knowledge base. Multiple segmentation and labelling hypotheses are generated with local constraint satisfaction being achieved through a hierarchical form of relaxation labelling. The traditionally unidirectional segmentation-matching process is recast into a dynamic closed-loop system where the current interpretation state is used to drive the lower level image processing functions. The theory presented in this dissertation is applied to a new object recognition and scene understanding system called Cite which is described in detail.
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Dillon, Craig. "A theory of scene understanding and object recognition." Curtin University of Technology, School of Computing, 1996. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=11179.
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This dissertation presents a new approach to image interpretation which can produce hierarchical descriptions of visually sensed scenes based on an incrementally learnt hierarchical knowledge base. Multiple segmentation and labelling hypotheses are generated with local constraint satisfaction being achieved through a hierarchical form of relaxation labelling. The traditionally unidirectional segmentation-matching process is recast into a dynamic closed-loop system where the current interpretation state is used to drive the lower level image processing functions. The theory presented in this dissertation is applied to a new object recognition and scene understanding system called Cite which is described in detail.
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Jiao, Zhuoan. "Optimisation studies in a Prolog object-oriented database." Thesis, University of Aberdeen, 1992. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU047556.
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This thesis is about query optimisation studies in a Prolog object-oriented database (P/FDM). Although many of the query optimisation techniques used in relational database systems can be adapted to solve problems in query optimisation for object-oriented databases (OODBs), there are also many problems that are unique to the OODBs, and new techniques need to be developed. Techniques developed for optimising queries in OODB systems can be categorised into three distinct approaches, namely, algebraic transformation, type-based transformation, and method optimisation. However, few OODB systems have used the combination of all three techniques in the design of their query optimisers. We have adopted an unified approach by combining them into the optimisation strategy of a query optimiser for P/FDM. The overall architecture of the P/FDM query optimiser is based on the top-down framework. The source language of the query optimiser is an extension of Shipman's original DAPLEX language. We choose ZF notation, based on set comprehensions in Zermelo-Frankel (ZF) set theory, to represent the intermediate forms of DAPLEX queries. The target language of optimiser is a set of P/FDM primitives which are implemented in Prolog. We have taken the approach of asking the database to reveal the definitions of methods to the optimiser as privileged code. Most OODB systems do not perform method optimisation because of the difficulties caused by defining methods in a procedural programming language. We have been greatly helped by using a functional programming approach which holds methods in a declarative form, and thus makes it much easier to combine and transform them. Heuristics are incorporated into the query optimisation strategy to avoid exhaustive search, so that the optimiser is able to produce efficient query evaluation plans within satisfactory response times.
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Norman, Joseph W. "A theory for the visual perception of object motion." Thesis, Florida Atlantic University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3647571.
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The perception of visual motion is an integral aspect of many organisms' engagement with the world. In this dissertation, a theory for the perception of visual object-motion is developed. Object-motion perception is distinguished from objectless-motion perception both experimentally and theoretically. A continuous-time dynamical neural model is developed in order to generalize the findings and provide a theoretical framework for continued refinement of a theory for object-motion perception. Theoretical implications as well as testable predictions of the model are discussed.
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Wang, Chen. "Modeling multi-attribute utility theory with object-oriented programming." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-01122010-020130/.
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Chen, Wei-Ying. "Temporal Limits of Multiple Object Tracking and Resource Theory." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/9413.
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The attentional capacity limitation of tracking multiple moving objects has been discussed expansively by various theoreticians. The research reported in this thesis assessed the limits of object tracking with a series of systematic psychophysical investigations. Chapter 2 reports evidence that the limits of object tracking are directly due to the resources allocated to each target rather than caused by spatial interference (Franconeri et al., 2008; 2010). With widely-spaced target configurations, the maximum speed observers could track targets declined as the number of targets increased. Chapter 4 provides evidence supporting the claim that tracking resources are flexibly shared among targets, with the fastest-moving target receiving more resources than the slower-moving target. These results provide concrete evidence to support the assumptions of resource theory: continuously allocated resources, limited capacity, and flexible resource allocation. The current research also demonstrated some specific findings regarding resource theory in object tracking. Chapters 3 and 4 confirmed previous findings obtained using different methodologies (Alvarez & Cavanagh, 2005) by showing that tracking resources are largely hemisphere-specific, and effectively demonstrated that performance for a fast-moving target is very sensitive to the amount of resources allocated. Furthermore, Chapter 5 showed that observers lost the tracked target if distractors occupied a location close to the time a target occupied it, suggesting that the mechanism of tracking also has a limited temporal resolution, and that reducing the resource allocated to each target reduces temporal resolution. To conclude, the findings of all the experiments are discussed in the context of various resource theories.
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Marino, Greta. "A-priori estimates for some classes of elliptic problems." Doctoral thesis, Università di Catania, 2019. http://hdl.handle.net/10761/4116.
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L'obiettivo di questa tesi è di studiare alcuni aspetti di un potente strumento ampiamente utilizzato in analisi matematica, che è rappresentato dalle stime a priori. Infatti, le stime a priori hanno un ruolo chiave nella teoria delle equazioni differenziali a derivate parziali e nel calcolo delle variazioni, perché sono intimamente legate all'esistenza di soluzione per un dato problema. Nella tesi vengono presentati tre lavori scritti durante il periodo del dottorato, in ciascuno dei quali vengono utilizzate le stime a priori.
Il primo lavoro, scritto in collaborazione con il Prof. S. Mosconi, riguarda l'esistenza di soluzione per la seguente equazione differenziale ordinaria del quarto ordine (equazione di Swift-Hohenberg), $ u''''+ qu''+ F'(u)= 0$, dove $q$ è un parametro reale e $F$ è una funzione $C^2$, coerciva e quasi-convessa.
Il secondo lavoro, scritto in collaborazione con il prof. P. Winkert, riguarda stime a priori per un problema ellittico in cui gli operatori hanno crescita critica, sia nel dominio che sulla frontiera.
Il terzo lavoro, scritto in collaborazione con i Prof. S.A. Marano e A. Moussaoui, riguarda l'esistenza di soluzione per un sistema ellittico definito in tutto lo spazio $\R^N$, in cui le nonlinearità contengono termini singolari, cioè che possono tendere a $+\infty$ quando la variabile tende a zero.
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Kim, Changick. "A framework for object-based video analysis /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5823.
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Graf, Thorsten. "Flexible object recognition based on invariant theory and agent technology." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=96086170X.
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Roman, Zoltan. "«Text» as ldea and Object: The Lessons of Literary Theory." Bärenreiter Verlag, 1998. https://slub.qucosa.de/id/qucosa%3A37056.
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Lomp, Oliver [Verfasser]. "Cognitive object recognition based on dynamic field theory / Oliver Lomp." München : Verlag Dr. Hut, 2017. http://d-nb.info/1140977741/34.
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Šlajchrt, Zbyněk. "Object Morphology—A Protean Generalization of Object-Oriented Paradigm." Doctoral thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-264276.
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Modeling protean objects, i.e. objects adapting their structure and behavior dynamically with respect to a changeable environment, is often challenging in traditional object-oriented languages. According to the author, the root cause of this problem lies in the class-based conceptual framework embedded in the foundation of the object-oriented para-digm. The proposed paradigm Object Morphology (OM) is greatly influenced by prototype theory developed in the field of cognitive psychology. OM abandons the notion of class and suggests, instead, that the abstractions of protean objects should be established through the construction of morph models describing the possible forms of those objects. This the-sis defines the theoretical foundations of OM, which is further used to specify the elements of prototypical object-oriented analysis. An important part of this work is also a proof-of-concept implementation of an OM framework in Scala.
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Taylor, Barnaby. "Word and object in Lucretius : Epicurean linguistics in theory and practice." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:c0ed507b-6436-4c84-8457-34fa707af79a.
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This thesis combines a philosophical interpretation of Epicurean attitudes to language with literary analysis of the language of DRN. Chapters 1-2 describe Epicurean attitudes to diachronic and synchronic linguistic phenomena. In the first chapter I claim that the Epicurean account of the first stage of the development of language involves pre-rational humans acting under a ‘strong’ form of compulsion. The analogies with which Lucretius describes this process were motivated by a structural similarity between the Epicurean accounts of phylogenetic and ontogenetic psychology. Chapter 2 explores the Epicurean account of word use and recognition, central to which are ‘conceptions’. These are attitudes which express propositions; they are not mental images. Προλήψεις, a special class of conception, are self-evidently true basic beliefs about how objects in the world are categorized which, alongside the non-doxastic criteria of perceptions and feelings, play a foundational role in enquiry. Chapter 3 offers a reconstruction of an Epicurean theory of metaphor. Metaphor, for Epicureans, involves the subordination of additional conceptions to words to create secondary meanings. Secondary meanings are to be understood by referring back to primary meanings. Accordingly, Lucretius’ use of metaphor regularly involves the juxtaposition in the text of primary and secondary uses of terms. An account of conceptual metaphor in DRN is given in which the various conceptual domains from which Lucretius draws his metaphorical language are mapped and explored. Chapter 4 presents a new argument against ‘atomological’ readings of Lucretius’ atoms/letters analogies. Lucretian implicit etymologies involve the illustration, via juxtaposition, of language change across time. This is fully in keeping with the Epicurean account of language development. Chapter 5 describes Lucretius’ reflections on and interactions with the Greek language. I suggest that the study of lexical Hellenisms in DRN must be sensitive to the distinction between lexical borrowing and linguistic code-switching. I then give an account of morphological calquing in the poem, presenting it as a significant but overlooked strategy for Lucretian vocabulary-formation.
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Williams, Michael T. "The epistemological subject/object relationship in existentialism." Theological Research Exchange Network (TREN), 1997. http://www.tren.com.
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Nelson, David Alan. "To formalise and implement a categorical object-related database system." Thesis, University of Newcastle Upon Tyne, 1999. http://hdl.handle.net/10443/2078.
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The relational data model uses set theory to provide a formal background, thus ensuring a rigorous mathematical data model with support for manipulation. Newer generation database models are based on the object-oriented paradigm, and so fall short of having such a formal background, especially in some of the more complex data manipulation areas. We use category theory to provide a formalism for object databases, in particular the object-relational model. Our model is known as the Product Model. This thesis will describe our formal model for the key aspects of object databases. In particular, we will examine how the Product Model deals with three of the most important problems inherent in object databases, those of queries, closure and views. As well as this, we investigate the more common database concepts, such as keys, relationships and aggregation. We will illustrate the feasibility of this model, by producing a prototype implementation using PIFDM. PIFDM is a semantic data model database system based on the functional model of Shipman, with object-oriented extensions.
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Marka, Madhavi. "Object-based unequal error protection." Thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-06242002-152555.
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Waddington, Gary. "Biedermans Recognition by Components (RBC) theory of human object recognition - an investigation." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301971.
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Salgado-Arteaga, Francisco. "A study on object-oriented knowledge representation." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/935944.
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This thesis is a study on object-oriented knowledge representation. The study defines the main concepts of the object model. It also shows pragmatically the use of object-oriented methodology in the development of a concrete software system designed as the solution to a specific problem.The problem is to simulate the interaction between several animals and various other objects that exist in a room. The proposed solution is an artificial intelligence (Al) program designed according to the object-oriented model, which closely simulates objects in the problem domain. The AI program is conceived as an inference engine that maps together a given knowledge base with a database. The solution is based conceptually on the five major elements of the model, namely abstraction, encapsulation, modularity, hierarchy, and polymorphism.The study introduces a notation of class diagrams and frames to capture the essential characteristics of the system defined by analysis and design. The solution to the problem allows the application of any object-oriented programming language. Common Lisp Object System (CLOS) is the language used for the implementation of the software system included in the appendix.Department of Computer Science
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Serbun, Sarah J. "Memory for object details in self- and other- referencing." Waltham, Mass. : Brandeis University, 2009. http://dcoll.brandeis.edu/handle/10192/23325.
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Boostrom, Robert E. Singelmann Peter. "Symbolic interaction in brand equity theory the Ford Mustang as an abstract object /." Diss., UMK access, 2004.
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Thesis (M.A.)--Dept. of Sociology. University of Missouri--Kansas City, 2004."A thesis in sociology." Typescript. Advisor: Peter Singelmann. Vita. Title from "catalog record" of the print edition Description based on contents viewed Feb. 22, 2006. Includes bibliographical references (leaves 44-46). Online version of the print edition.
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Cucu, Graindorge Tatiana. "Contribution à une méthodologie d'évaluation à priori des projets de transport urbain durable." Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14488/document.
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L’objectif de ces travaux de proposer aux autorités locales un outil d’aide à la décision pour formaliser une démarche participative tout au long de la conception d’un projet de transport urbain durable, dans un contexte multicritères et multi acteurs. La méthodologie développée repose sur l’évaluation a priori des impacts d’un projet local, en impliquant les acteurs dès la phase de diagnostic. Cette phase permet d’identifier des groupes d’acteurs selon leur perception des phénomènes urbains, des interactions et des préférences déclarées d’évolution. Elle permet d’établir une liste d’indicateurs communs qui seront évalués. Le choix des alternatives à étudier est le résultat de l’application conjointe de techniques de transférabilité - fondées sur l’étude de projets développés dans d’autres villes - et de l’étude des préférences déclarées des usagers locaux. La probabilité d’utilisation du service s’évalue à l’aide d’un modèle comportemental agrégé qui intègre la perception floue et l’indécision des usagers devant une situation nouvelle. Les changements de comportement des usagers sont pris en compte à l’aide d’un indicateur de robustesse qui teste les effets des paramètres exogènes sur l’évolution de la probabilité d’utilisation du service. Un micro-simulateur de trafic permet d’évaluer les impacts des différents scénarii sur le trafic, l’environnement et le bien-être des citoyens sous la forme monétarisée, afin d’illustrer les coûts et les bénéfices indirects attendus de l’implantation du projet. Une solution de compromis est proposée : elle vise à fournir la solution qui contenterait au mieux l’ensemble des représentants des groupes d’acteurs - et non la solution optimale en termes d’impactsThe objective of this research is to provide to the local authorities a decision aid tool in order to formalize a participatory approach during the conception of a sustainable urban transport project, in a multi-criteria and multi-actors context. The methodology is based on the a priori evaluation of the impacts of a local project, involving stakeholders as soon as the diagnosis phase. This phase aims at identifying groups of actors according to their perception of urban phenomena, their interactions and their stated preferences of evolution. The diagnosis phase leads to the setting-up of a list of common indicators to be evaluated. The choice of alternatives to be studied is the result of the transferability techniques - based on the projects developed in other cities - and the stated preferences of local users. The probability of using the service is evaluated using an aggregated behavioral model that takes into account the fuzzy perception and the indecision of users in a new situation. Changes in the behaviour of the users are taken into account thanks to an indicator of robustness that tests the impact of exogenous parameters on the evolution of the probability of using a service. A traffic micro--simulator aims at assessing the impacts of the various scenarios on traffic, environment and the welfare of citizens– which is monetized. It illustrates the costs and indirect benefits expected with the implementation of project. A compromise solution is proposed: it aims at identifying an alternative that would best satisfy the representatives of the stakeholder groups – and not necessarily the optimal solution in terms of impacts
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Olteanu, Constanta, and Mona Holmqvist. "Defining a non-complex learning object from preschool to upper secondary school." Högskolan Kristianstad, Avdelningen för Pedagogik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-10511.
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The aim of this article is to analyse the aspects that teachers intend to focus on in teaching mathematics and the students' needs, i.e. what is critical for student learning. The article develops an argument for the importance of identifying the “critical aspects” as a basis for the teachers to promote student learning of Mathematics from preschool to upper secondary school. The article concludes that what teachers believe that students need to be offered concerning a specific content of Mathematics does not correspond to students' needs. Gaps between the intended and the enacted object of learning show that both the way the object of learning is offered and the way this is communicated in a teaching situation could be improved.
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Cammack, Susanne. "Gramophonic Trauma: The Object as Cultural Mnemonic in Irish Literature." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/dissertations/1192.
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The gramophone's function in literature has generally been examined in relation to media studies and Walter Benjamin's discussion of the reproduction of art through mechanical means, emphasizing the gramophone’s playback of recorded materials. This particular methodology, however, only deals with half of the machine's potential. My project mediates the links between media studies and “thing theory.” By making a distinction between the gramophone as an instrument (through which we access or hear a recording) and the gramophone as a "thing" (an object which draws attention to itself by not behaving as expected, thereby forcing us to confront the object's irreducibility), I trace connections between the physical “thing” as well as its embedded or recorded cultural archives of history, trauma, and identity for Modernist authors and their contemporary audiences. As both a voiced and mute object, the gramophone amplifies embedded accounts of a culture frequently traumatized through violence and disruption; it also bears physical testimony to the scars left behind by those traumatic encounters. My project takes Irish Modernism as its primary focus, and it identifies ways in which the traumas represented by phonograph and gramophone are tied to cultural traumas specific to Ireland. Again to briefly quantify, in my work I discuss (to varying degrees) over 20 Irish texts that evoke the gramophone as an object of some significance and in relation to some aspect of cultural trauma. For instance, in Dracula, the oral traditional of Ireland is under attack by the undead oralities of the phonograph: a machine that presumably preserves living oral culture, is essentially killing what it attempts to preserve. In George Bernard Shaw’s Pygmalion, the gramophone is feminized in the context of gendered colonial politics. In Elizabeth Bowen’s The Last September and Sean O’Casey’s Juno and the Paycock the machine is imbued with the physical and psychological violence of Ireland at war. And in works like Flann O’Brien’s At Swim-Two-Birds and Brian Friel’s The Gentle Island the gramophone is a manifestation of post-war tensions—both psychological and political—that can erupt in violence when left unresolved.
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Tafazoli, Sina. "Behavioral and Neuronal Substrates of Invariant Object Recognition in Rats." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/4838.
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The visual system of humans and other primates has the remarkable ability to recognize objects despite tremendous variation in their appearance, due to changes in size, position, background, and viewpoint. While this ability is central to human visual perception, the underlying brain mechanisms are poorly understood, and transformation-tolerant recognition remains a major challenge in the development of artificial vision systems. Arguably, this is a consequence of the formidable complexity of the primate visual system and the relatively narrow range of experimental approaches that human and nonhuman primate studies allow.
Although, traditionally, the invasive study of the neuronal basis of object vision has been restricted to non-human primate experiments, recently, rodents are merging as powerful models to study visual processing. However, successful use of rodents as models for studying visual object recognition crucially depends on the ability of their visual system to construct representations of visual objects that tolerate (i.e., remain relatively unchanged with respect to) the tremendous changes in object appearance produced, for instance, by size and viewpoint variation. As the first part of this Thesis, I addressed this question by training rats to categorize a continuum of morph objects resulting from blending two object prototypes. The resulting psychometric curve (reporting the proportion of responses to one prototype along the morph line) served as a reference when, in a second phase of the experiment, either prototype was briefly presented as a prime, immediately before a test morph object. The resulting shift of the psychometric curve showed that recognition became biased (primed) toward the identity of the prime. Critically, this bias was observed also when the primes were transformed along a variety of dimensions (i.e., size, position, viewpoint, and their combination) that the animals had never experienced before. These results indicate that rats spontaneously perceive different views/appearances of an object as similar (i.e., as instances of the same object) and argue for the existence of neuronal substrates underlying formation of transformation-tolerant object representations in rats.
As the next step, I tried to characterize such neuronal substrates by performing multi- electrode neuronal recordings (in anesthetized rats exposed to a battery of visual objects) from five different cortical areas of the rat brain: primary visual cortex (V1) and four extrastriate areas (named LM, AL, LI and LL) that are located laterally to V1 and have been proposed as candidate stages of a putative rat visual shape processing stream,homologous to the monkey
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ventral visual stream (Apart from area AL that probably belongs to dorsal pathway in rat). An object set consisting of 10 different objects, each transformed across a variety of axes (position, size, in-depth azimuth rotation and in-plane rotation) was used. I found that along the processing hierarchy V1->LM->LI->LL, receptive fields become progressively bigger, as well as the latency of the response. Using information theory I found that, as the information travels through this hierarchy, the fractional information that each cell carries about the luminance gradually decreases, whereas the fractional information about shape gradually increases. Accordingly, I found that neurons along this pathway become increasingly tolerant to transformations. This indicates that neurons along this hierarchy become progressively tuned to more complex visual attributes and become more tolerant to transformations, thus suggesting that the pathway V1->LM->LI->LL could be homologous to the primate ventral stream. Overall, the combination of this behavioral and neurophysiological studies will provide an unprecedented understanding of high-level visual processing in a rodent species.
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Sánchez, Escuderos Daniel. "High-resolution algorithms for the reconstruction of the equivalent currents of an antenna by means of modal theory and a priori information." Doctoral thesis, Universitat Politècnica de València, 2010. http://hdl.handle.net/10251/8323.
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El objetivo del diagnóstico de antenas es la detección de errores en antena fabricadas. Dado que este diagnóstico es difícil de realizar simplemente observando medidas de campo, el diagnóstico se realiza usando las corrientes equivalentes reconstruidas en una superficie próxima a la antena. Esta tesis describe las diferentes posibilidades de realizar esta reconstrucción en una superficie plana a partir de medidas esféricas en campo próximo. En concreto, se estudian extensivamente, y se aplican a situaciones reales, las técnicas de la expansión modal.
El problema principal de las técnicas modales es la limitación en la resolución de las corrientes equivalentes. La razón de esta limitación es la pequeña región disponible del espectro de ondas planas (cuya transformada de Fourier son las corrientes equivalentes). En esta tesis se estudia este problema, se muestran varios ejemplos y se describen las posibilidades de mejorar la resolución. De entre estas posibilidades, se propone el uso de una técnica de extrapolación con la que estimar el espectro no visible a partir de la región conocida (el espectro visible) y de información adicional sobre la antena como, por ejemplo, el tamaño de la antena.
Entre las diferentes técnicas de extrapolación, se describen y comparan las técnicas más usadas comúnmente. En primer lugar, se aplica el algoritmo iterativo de Papoulis-Gerchberg usando el tamaño y la forma de la antena. Después se describen las versiones directas de este algoritmo, es decir la matriz de extrapolación por filas y columnas y la matriz de extrapolación generalizada. Finalmente, se estudia la transformación PDFT y se compara con los algoritmos anteriores. Todas estas técnicas son aplicadas en situaciones reales con una importante mejora en la resolución.
El último capítulo de esta tesis trata de los procedimientos de calibración de sonda. Estos procedimientos son especialmente importantes en el diagnóstico de antenas.Sánchez Escuderos, D. (2009). High-resolution algorithms for the reconstruction of the equivalent currents of an antenna by means of modal theory and a priori information [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/8323
Palancia
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Baheti, Pawan Kumar. "Feature-Specific Imaging: Extensions to Adaptive Object Recognition and Active Illumination Based Scene Reconstruction." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/193587.
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Computational imaging (CI) systems are hybrid imagers in which the optical and post-processing sub-systems are jointly optimized to maximize the task-specific performance. In this dissertation we consider a form of CI system that measures the linear projections (i.e., features) of the scene optically, and it is commonly referred to as feature-specific imaging (FSI). Most of the previous work on FSI has been concerned with image reconstruction. Previous FSI techniques have also been non-adaptive and restricted to the use of ambient illumination.We consider two novel extensions of the FSI system in this work. We first present an adaptive feature-specific imaging (AFSI) system and consider its application to a face-recognition task. The proposed system makes use of previous measurements to adapt the projection basis at each step. We present both statistical and information-theoretic adaptation mechanisms for the AFSI system. The sequential hypothesis testing framework is used to determine the number of measurements required for achieving a specified misclassification probability. We demonstrate that AFSI system requires significantly fewer measurements than static-FSI (SFSI) and conventional imaging at low signal-to-noise ratio (SNR). We also show a trade-off, in terms of average detection time, between measurement SNR and adaptation advantage. Experimental results validating the AFSI system are presented.Next we present a FSI system based on the use of structured light. Feature measurements are obtained by projecting spatially structured illumination onto an object and collecting all of the reflected light onto a single photodetector. We refer to this system as feature-specific structured imaging (FSSI). Principal component features are used to define the illumination patterns. The optimal LMMSE operator is used to generate object estimates from the measurements. We demonstrate that this new imaging approach reduces imager complexity and provides improved image quality in high noise environments. We then generalize the FSSI system by making use of random projections (i.e., using no object prior) to define the illumination patterns. Object estimates are generated using L1-norm minimization and gradient-projection sparse reconstruction algorithms. Experimental results validating the FSSI system are presented.
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Nyberg, Forshage Andria. "On Sublimity and the Excessive Object in Trans Women's Contemporary Writing." Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-30337.
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This thesis examines trans women's contemporary writing in relation to a theory of the excessive object, sublimity, transmisogyny and minor literature. In doing so, this text is influenced by Susan Stryker's work on monstrosity, abjection and transgender rage in the article “My Words to Victor Frankenstein Above the Village of Chamounix: Performing Transgender Rage” (1994). The excessive object refers to a concept coined in this thesis to describe sublimity from another perspective than that of the tradition following from Immanuel Kant's A Critique of Judgment, building on feminist scholarship on the aesthetic of the sublime. Of particular relevance are critiques of the patriarchal dynamics of sublimity and the idea of the feminine sublime as it is explored with reference to literature by Barbara Freeman in The Feminine Sublime: Gender and Excess in Women's Fiction (1995). Following from the feminist critique of sublimity, trans women's writing is explored as minor literature through a re-reading of Gilles Deleuze and Félix Guattari's work on Franz Kafka in Kafka. Toward a Minor Literature (1986), with attention to the importance that conditions of impossibility, marginality and unintelligibility holds for the political possibilities of minor literature. These readings form the basis for an analysis of four literary texts by two contemporary authors, Elena Rose, also known as little light, and Sybil Lamb, in addition to a deeper re-engagement with Stryker's work. In so doing, this thesis also touches on topics of power, erasure, trauma, self-sacrifice, appropriation and unrepresentability.
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Lima, Lucas Fabiano. "A mean-field game model of economic growth : an essay in regularity theory." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8902.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
In this thesis, we present a priori estimates for solutions of a mean-field game (MFG) defined over a bounded domain Ω ⊂ ℝd. We propose an application of these results to a model of capital and wealth accumulation. In Chapter 1, an introduction to mean-field games is presented. We also put forward some of the motivation from Economics and discuss previous developments in the theory of differential games. These comments aim at indicating the connection between mean-field games theory, its applications and the realm of Mathematical Analysis. In Chapter 2, we present an optimal control problem. Here, the agents are supposed to be undistinguishable, rational and intelligent. Undistinguishable means that every agent is governed by the same stochastic differential equation. Rational means that all efforts of the agent is to maximize a payoff functional. Intelligent means that they are able to solve an optimal control problem. Once we describe this (stochastic) optimal control problem, we produce a heuristic derivation of the mean-field games system, which is summarized in a Verification Theorem; this gives rise to the Hamilton-Jacobi equation (HJ). After that, we obtain the Fokker-Plank equation (FP). Finally, we present a representation formula for the solutions to the (HJ) equation, together with some regularity results. In Chapter 3, a specific optimal control problem is described and the associated MFG is presented. This MFG is prescribed in a bounded domain Ω ⊂ ℝd, which introduces substantialadditional challenges from the mathematical view point. This is due to estimates for the solutionsat the boundary in Lp. The rest of the chapter puts forward two well known tips of estimates: theso-called Hopf-Lax formula and the First Order Estimate. In Chapter 4, the wealth and capital accumulation mean-field game model is presented. The relevance of studying MFG in a bounded domain then becomes clear. In light of the results obtained in Chapter 3, we close Chapter 4 with the Hopf-Lax formula, and the First Order estimates. Three appendices close this thesis. They gather elementary material on Stochastic Calculus and Functional Analysis.
Nesta dissertação são apresentadas algumas estimativas a priori para soluções de sistemas mean-field games (MFG), definidos em domínios limitados Ω ⊂ ℝd. Tais estimativas são aplicadas em um modelo mean-field específico, que descreve o acúmulo de riqueza e capital. No Capítulo 1, é apresentada uma breve introdução histórica sobre os mean-field games. Nesta introdução, exploramos sua relação com a teoria dos jogos, cujos alicerces foram construídos por economistas e matemáticos ao longo do século XX. O objetivo do capítulo é transmitir. No Capítulo 2, apresentamos um problema de controle ótimo em que cada agente é suposto ser indistinguível, racional e inteligente. Indistinguível no sentido de que cada um é governado pela mesma equação diferencial estocástica. Racional no sentido de que todos os esforços do agente são no sentido de maximizar um funcional de recompensa e, inteligente no sentido de que são capazes de resolver um problema de controle ótimo. Descreve-se este problema de controle ótimo, e apresenta-se a derivação heurística dos mean-field games; obtém-se através de um Teorema de Verificação, a equação de Hamilton-Jacobi (HJ) associada, e em seguida, obtémse a equação de Fokker-Planck. De posse destas equações, apresentamos alguns resultados preliminares, como uma fórmula de representação para soluções da equação de HJ e alguns resultados de regularidade. No Capítulo 3, descreve-se um problema específico de controle ótimo e apresenta-se a respectiva derivação heurística culminando na descrição de um MFG com condições não periódicas na fronteira; esta abordagem é original na literatura de MFG. O restante do capítulo é dedicado à exposição de dois tipos bem conhecidos de estimativas: a fórmula de Hopf-Lax e estimativa de Primeira Ordem. Uma observação relevante, é a de que o trabalho em obter-se estimativas a priori é aumentado substancialmente neste caso, devido ao fato de lidarmos com estimativas para os termos de fronteira com normas em Lp. ao leitor, as origens da Teoria Econômica contemporânea, que surgem à partir da utilização da Matemática na formulação e resolução de problemas econômicos. Tal abordagem é motivada principalmente pelo rigor e clareza da Matemática em tais circunstâncias. No Capítulo 4, apresenta-se o modelo de jogo do tipo mean-field de acúmulo de capital e riqueza, o que deixa claro a relevância do estudo dos MFG em um domínio limitado. À luz dos resultados obtidos no Capítulo 3, encerramos o Capítulo 4 com as estimativas do tipo Hopf-Lax e de Primeira Ordem. Três apêndices encerram o texto desta dissertação de mestrado; estes reúnem material elementar sobre Cálculo Estocástico e Análise Funcional.
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Simons, Anthony James Howard. "A language with class : the theory of classification exemplified in an object-oriented language." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389555.
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Ma, Xiaoxu. "Learning coupled conditional random field for image decomposition : theory and application in object categorization." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44719.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.Includes bibliographical references (p. 171-180).
The goal of this thesis is to build a computational system that is able to identify object categories within images. To this end, this thesis proposes a computational model of "recognition-through-decomposition-and-fusion" based on the psychophysical theories of information dissociation and integration in human visual perception. At the lowest level, contour and texture processes are defined and measured. In the mid-level, a novel coupled Conditional Random Field model is proposed to model and decompose the contour and texture processes in natural images. Various matching schemes are introduced to match the decomposed contour and texture channels in a dissociative manner. As a counterpart to the integrative process in the human visual system, adaptive combination is applied to fuse the perception in the decomposed contour and texture channels. The proposed coupled Conditional Random Field model is shown to be an important extension of popular single-layer Random Field models for modeling image processes, by dedicating a separate layer of random field grid to each individual image process and capturing the distinct properties of multiple visual processes. The decomposition enables the system to fully leverage each decomposed visual stimulus to its full potential in discriminating different object classes. Adaptive combination of multiple visual cues well mirrors the fact that different visual cues play different roles in distinguishing various object classes. Experimental results demonstrate that the proposed computational model of "recognition-through-decomposition-and-fusion" achieves better performance than most of the state-of-the-art methods in recognizing the objects in Caltech-101, especially when only a limited number of training samples are available, which conforms with the capability of learning to recognize a class of objects from a few sample images in the human visual system.
by Xiaoxu Ma.
Ph.D.
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Welch, Elizabeth Katherine. "The use of object relations theory in clinical social work practice : a case study." Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/14973.
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Includes bibliographical references.The purpose of this study was to explore the value of a particular theoretical framework in terms of several issues relating to clinical social work practice. The selected theoretical framework was that of Object Relations theory, specifically the works of Melanie Klein and Margaret Mahler. The method of inquiry was that of a single case study. The investigation centred around the theories' usefulness in clinical social work practice regarding: assessment, particularly in terms of the development of insight into and understanding of human psychological development, and guiding practice and informing intervention. The selected theoretical framework was also evaluated according to: its sufficiency, in and of itself, and the extent to which its utilization facilitates avoidance of stereotyping and pathologizing. The study was undertaken in a psychiatric unit, run according to the principles of a therapeutic milieu, in a local hospital. The subject of the study had been admitted to the unit after a parasuicide attempt. He manifested many of the affects and behaviours associated with Borderline Personality Disorder, and was a transsexual who had undergone reassignment surgery. Ongoing assessment and intervention were undertaken in the residential unit on an individual basis and in group activities. Reference to literature, the writings of Klein and Mahler in particular, was a crucial and essential aspect of the study. The selected theoretical framework was found to be of great value in terms of the development of insight into and understanding of human psychological development, which in turn aided the assessment process. Whilst neither Klein nor Mahler wrote extensively or specifically of intervention, a model compatible with their opinions was identified in the literature and effectively used for this purpose. The approach used, both from a theoretical and a practical standpoint, encouraged expression and maintenance of individual uniqueness. The study highlighted the importance of a sound theoretical knowledge base underpinning clinical practice, particularly when practitioners are challenged by difficult cases. In addition, the need for practitioners to assume responsibility for continued dynamic learning, and the significant role of supervision were apparent. Further avenues for study and research were also identified.
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Della-Bosca, Daniel J. "The Aesthetic Implications of Complexity Theory in Regard to Object Creation and Haptic Response." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/409180.
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This research explores the idea of complexity for the express purpose of contributing to and expanding upon the lexicons of Art and Design. This exploration of complexity is undertaken by questioning a sensorial response to complex form, particularly through touch. The question in plain terms is, do we like to touch simple things or complex things? Touch is of course but one aspect of the suite of haptic senses, so proprioceptive, vestibular, and kinaesthetic senses are addressed, as is the deep and intertwined relationship between hapticity and sight. The research methodology is practice-led and has encompassed the methods of action research and participant study. I offer that the primary contributions to research are in the method of dialogue between creative practitioner and fractal algorithms expressed through novel technical methods of procedure explored and conveyed through object and through analysis in this thesis.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Queensland College of Art
Arts, Education and Law
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Andrade, Mauren Louise Sguario Coelho de. "Uma nova abordagem do método Level Set baseada em conhecimento a e priori da forma." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1686.
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CAPESA análise do comportamento dos fluidos em escoamentos multifásicos possui grande relevância para garantia de segurança em instalações industriais. O uso de equipamentos para monitorar tal comportamento fica sujeito a fatores tais como, alto investimento e mão de obra especializada. Neste contexto, a aplicação de técnicas de processamento de imagens na análise do escoamento seria de grande auxílio, no entanto, poucas pesquisas foram desenvolvidas. Nesta tese, uma nova abordagem para segmentação de imagens baseada no método Level Set que une contornos ativos e conhecimento a priori é desenvolvida. Para tanto, um modelo da forma do objeto alvo é treinado e definido por meio do modelo de distribuição de pontos e então inserido como uma função de velocidade de extensão para evolução da curva de nível zero do método Level Set. A abordagem proposta cria um framework que consiste em três termos de energia e uma função de velocidade de extensão λLg(θ)+vAg(θ)+muP(0)+θf. Os três primeiros termos desta equação são os mesmo introduzidos em (LI CHENYANG XU; FOX, 2005) e a última parcela θf é baseada na representação da forma do objeto proposta nesta tese. Duas variações do método são utilizadas: uma com restrição (Restrict Level Set - RLS) e outra sem restrição (Free Level Set - FLS). A primeira será utilizada na segmentação de imagens que contem alvos com pouca variação na forma e pose. A segunda deve ser utilizada para a identificação correta da forma de bolhas de gás no escoamento bifásico gás-líquido. A robustez e eficiência da abordagem RLS e FLS são apresentados em imagens do escoamento bifásico gás-líquido e na base de dados HTZ (FERRARI et al., 2009). Os resultados promissores confirmam o bom desempenho do algoritmo proposto (RLS e FLS) e indicam que a abordagem pode ser utilizada como um método eficiente para validação e/ou calibração de diversos equipamentos utilizados como medidores das propriedades do escoamento bifásico, bem como, em outros problemas de segmentação de imagens.
The analysis of fluid behavior in multiphase flow is very relevant to guarantee system safety. The use of equipment to describe such behavior is subjected to factors such as the high level of investments and of specialized labor. The application of image processing techniques to flow analysis can be a good alternative, however, very little research has been developed. In this subject, this study aims at developing a new approach to image segmentation based on Level Set method that connects the active contours and prior knowledge. In order to do that, a model shape of the targeted object is trained and defined through a model of point distribution and later this model is inserted as one of the extension velocity functions for the curve evolution at zero level of level set method. The proposed approach creates a framework that consists in three terms of energy and an extension velocity function λLg(θ)+vAg(θ)+muP(0)+θf. The first three terms of the equation are the same ones introduced in (LI CHENYANG XU; FOX, 2005) and the last part of the equation θf is based on the representation of object shape proposed in this work. Two method variations are used: one restricted (Restrict Level Set - RLS) and the other with no restriction (Free Level Set - FLS). The first one is used in image segmentation that contains targets with little variation in shape and pose. The second will be used to correctly identify the shape of the bubbles in the liquid gas two phase flows. The efficiency and robustness of the approach RLS and FLS are presented in the images of the liquid gas two phase flows and in the image dataset HTZ (FERRARI et al., 2009). The results confirm the good performance of the proposed algorithm (RLS and FLS) and indicate that the approach may be used as an efficient method to validate and/or calibrate the various existing equipment used as meters for two phase flow properties, as well as in other image segmentation problems.
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Yokoo, Masahiro. "Robust tracking control design for cooperative robot arms carrying a common object." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/17609.
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Robertson, David George. "Metaphysical conspiracism : UFOs as discursive object between popular millennial and conspiracist fields." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10586.
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This thesis argues that narratives about Unidentified Flying Objects (UFOs) act as the central point of contact between conspiracist and popular millennial fields. Their confluence has come to form a field here termed ‘metaphysical conspiracism’, combining teleological narratives, the promise of soteriological knowledge and the threat of occluded malevolent agencies. I argue that metaphysical conspiracism offers a unique perspective on the interplay of knowledge, power and the construction of the other in contemporary popular discourse. Narratives about UFOs (and their extra-terrestrial occupants) have their roots in the Cold War period, but from the 1980s were increasingly constructed within a supernatural framework. Discourse analysis of popular literature from this period reveals a process of discursive transfer as the UFO narrative is contested and negotiated between conspiracist discourses concerning powerful, hidden agencies and popular millennial discourses of personal and planetary transformation, including ‘New Age’, 'Ascension' and '2012'. Using historical discourse analysis, supported by small-scale ethnographic sampling, I examine this discursive transfer in the work of three popular writers who together offer a broad overview of the field. Whitley Strieber was a central figure in the 'alien abduction' narrative in the 1980s, but his speculations on its meaning led him increasingly towards millennial and conspiratorial narratives. David Icke's well-known theory that a conspiracy of reptilian extraterrestrials has secretly seized control of the planet is demonstrated to have developed in the 1990s from a post-Theosophical narrative of benevolent UFOs as harbingers of the 'New Age'. Although less well-known, David Wilcock's work demonstrates that UFOs were also instrumental in the incorporation of conspiracist material into the recent '2012' millennial narrative. I seek to answer two questions with this thesis. Firstly, what is the common mechanism which facilitates the hybridisation I uncover between conspiracy narratives and popular millennialism? Secondly, how do the resulting metaphysical conspiracist narratives serve their subscribers? Despite a number of structural similarities, I argue that the common mechanism is the mobilisation of counter-epistemic strategies; that is, those predicated upon access to non-falsifiable sources of knowledge. The UFO narrative is particularly well-suited to suggesting sociological uncertainty about the boundaries between scientific and other strategies for the legitimisation of knowledge, encouraging its adoption by both conspiracist and millennial discourses. Secondly, metaphysical conspiracism reconciles the utopian vision of popular millennial discourse with the apocalyptic critique of modern global society announced by conspiracists. I therefore argue that metaphysical conspiracism supplies an effective popular theodicy with a Gnostic flavour in which these millennial prophecies did not ‘fail’, but were prevented from arriving by hidden malevolent others.
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Ehtiati, Tina. "Strongly coupled Bayesian models for interacting object and scene classification processes." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102975.
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In this thesis, we present a strongly coupled data fusion architecture within a Bayesian framework for modeling the bi-directional influences between the scene and object classification mechanisms. A number of psychophysical studies provide experimental evidence that the object and the scene perception mechanisms are not functionally separate in the human visual system. Object recognition facilitates the recognition of the scene background and also knowledge of the scene context facilitates the recognition of the individual objects in the scene. The evidence indicating a bi-directional exchange between the two processes has motivated us to build a computational model where object and scene classification proceed in an interdependent manner, while no hierarchical relationship is imposed between the two processes. We propose a strongly coupled data fusion model for implementing the feedback relationship between the scene and object classification processes. We present novel schemes for modifying the Bayesian solutions for the scene and object classification tasks which allow data fusion between the two modules based on the constraining of the priors or the likelihoods. We have implemented and tested the two proposed models using a database of natural images created for this purpose. The Receiver Operator Curves (ROC) depicting the scene classification performance of the likelihood coupling and the prior coupling models show that scene classification performance improves significantly in both models as a result of the strong coupling of the scene and object modules.ROC curves depicting the scene classification performance of the two models also show that the likelihood coupling model achieves a higher detection rate compared to the prior coupling model. We have also computed the average rise times of the models' outputs as a measure of comparing the speed of the two models. The results show that the likelihood coupling model outputs have a shorter rise time. Based on these experimental findings one can conclude that imposing constraints on the likelihood models provides better solutions to the scene classification problems compared to imposing constraints on the prior models.
We have also proposed an attentional feature modulation scheme, which consists of tuning the input image responses to the bank of Gabor filters based on the scene class probabilities estimated by the model and the energy profiles of the Gabor filters for different scene categories. Experimental results based on combining the attentional feature tuning scheme with the likelihood coupling and the prior coupling methods show a significant improvement in the scene classification performances of both models.
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Passon, Jerry Walter. "The Corvette in Literature and Culture: Material Object and Persistent Image." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/123.
Full textAbstract:
This study examines the Corvette, an automobile with a distinct place in American literature and culture. For more than fifty years, the Corvette has been in the process of becoming what is described as an "icon," although this progress has never been satisfactorily approached and explained. Why this particular machine has not just survived, but come to be recognized--by and large by most if not all Americans--as the signifier of various virtues (and some vices) is a question of some significance: in analyzing the reasons for the Corvette's long life and success as an overwhelmingly positive and distinctively American car, we look at the literature and culture of the United States. What this reveals is a complex web of ideas and attitudes that centers on one thing--a material object with six different forms over fifty years, yet one that has always retained its identity and power to signify. The approach here is thematic rather than historical. As a popular subject, the Corvette already has historians who look at it as a tangible thing that can be described, measured, and defined. My assignment is different: through the lens of critical theories, several of them, and a wide range of materials--film, novels, songs, and more--I seek to discover some essential aspects of the car that make its image dynamic and permit it to evolve over time. This is not an easy process; it has demanded an open mind to materials not often looked at in an English dissertation. The Corvette and its image are described in four areas and a conclusion: * The Corvette: the Empty, the American, and the Deadly Signifier (the original that becomes America's image of itself and the danger of speed and technology out of control) * The Image of Potency: the Corvette, Males, and Minorities (aggressive sexuality, African-American males, and male domination) * Women, Sex, and Identity as Power: the Corvette, Baddest Mother of Them All (phallic females, the car as sexual power and identity) * Corvette as Art: the Expressive Image (the car's own self-reflexive nature, the automobile as fashion--belonging ["I stand out, yet I belong"] and sense of self--and its presence in "art") * The Corvette: Image and Object
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Zlatkin, Rachel L. "Remembering Mothers: Representations of Maternity in Early Modern English Literature." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1368014379.
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Faitelson, David. "Program synthesis from domain specific object models." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:0c5a992e-dad4-435c-a576-e3ed504bcdbd.
Full textAbstract:
Automatically generating a program from its specification eliminates a large source of errors that is often unavoidable in a manual approach. While a general purpose code generator is impossible to build, it is possible to build a practical code generator for a specific domain. This thesis investigates the theory behind Booster — a domain specific, object based specification language and automatic code generator. The domain of Booster is information systems — systems that consist of a rich object model in which the objects refer to each other to form a complicated network of associations. The operations of such systems are conceptually simple (changing the attributes of objects, adding or removing new objects and creating or destroying associations) but they are tricky to implement correctly. The thesis focuses on the theoretical foundation of the Booster approach, in particular on three contributions: semantics, model completion, and code generation. The semantics of a Booster model is a single abstract data type (ADT) where the invariants and the methods of all the classes in the model are promoted to the level of the ADT. This is different from the traditional view that considers each class as a separate ADT. The thesis argues that the Booster semantics is a better model of object oriented systems. The second important contribution is the idea of model completion — a process that augments the postconditions of methods with additional predicates that follow from the system’s invariant and the method’s original intention. The third contribution describes a simple but effective code generation technique that is based on interpreting postconditions as executable statements and uses weakest preconditions to ensure that the generated code refines its specification.