Global ETD Search

221	Metodologie pro automatický návrh nízkopříkonových aproximativních obvodů / Automated Design Methodology for Approximate Low Power Circuits Mrázek, Vojtěch January 2018 (has links) Rozšiřování moderních vestavěných a mobilních systémů napájených bateriemi zvyšuje požadavky na návrh těchto systémů s ohledem na příkon. Přestože moderní návrhové techniky optimalizují příkon, elektrická spotřeba těchto obvodů stále roste díky jejich složitosti. Nicméně existuje celá řada aplikací, kde nepotřebujeme získat úplně přesný výstup. Díky tomu se objevuje technika zvaná aproximativní (přibližné) počítání, která umožňuje za cenu zanesení malé chyby do výpočtu významně redukovat příkon obvodů. V práci se zaměřujeme na použití evolučních algoritmů v této oblasti. Ačkoliv již tyto algoritmy byly úspěšně použity v syntéze přesných i aproximativních obvodů, objevují se problémy škálovatelnosti - schopnosti aproximovat složité obvody. Cílem této disertační práce je ukázat, že aproximační logická syntéza založená na genetickém programování umožňuje dosáhnout vynikajícího kompromisu mezi spotřebou a chybou. Byla provedena analýza čtyř různých aplikacích na třech úrovních popisu. Pomocí kartézského genetického programování s modifikovanou reprezentací jsme snížili spotřebu malých obvodů popsaných na úrovni tranzistorů použitelných například v technologické knihovně. Dále jsme zavedli novou metodu pro aproximaci aritmetických obvodů, jako jsou sčítačky a násobičky, popsaných na úrovni hradel. S využitím metod formální verifikace navíc celý návrhový proces umožňuje garantovat stanovenou chybu aproximace. Tyto obvody byly využity pro významné snížení příkonu v neuronových sítích pro rozpoznávání obrázků a v diskrétní kosinově transformaci v HEVC kodéru. Pomocí nové chybové metriky nezávislé na rozložení vstupních dat jsme navrhli komplexní aproximativní mediánové filtry vhodné pro zpracování signálů. Disertační práce reprezentuje ucelenou metodiku pro návrh aproximativních obvodů na různých úrovních popisu, která navíc garantuje nepřekročení zadané chyby aproximace.
222	Alzheimer's Disease Narratives and the Myth of Human Being Rieske, Tegan Echo 11 December 2012 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / The ‘loss of self’ trope is a pervasive shorthand for the prototypical process of Alzheimer's disease (AD) in the popular imagination. Turned into an effect of disease, the disappearance of the self accommodates a biomedical story of progressive deterioration and the further medicalization of AD, a process which has been storied as an organic pathology affecting the brain or, more recently, a matter of genetic calamity. This biomedical discourse of AD provides a generic framework for the disease and is reproduced in its illness narratives. The disappearance of self is a mythic element in AD narratives; it necessarily assumes the existence of a singular and coherent entity which, from the outside, can be counted as both belonging to and representing an individual person. The loss of self, as the rhetorical locus of AD narrative, limits the privatization of the experience and reinscribes cultural storylines---storylines about what it means to be a human person. The loss of self as it occurs in AD narratives functions most effectively in reasserting the presence of the human self, in contrast to an anonymous, inhuman nonself; as AD discourse details a loss of self, it necessarily follows that the thing which is lost (the self) always already existed. The private, narrative self of individual experience thus functions as proxy to a collective human identity predicated upon exceptionalism: an escape from nature and the conditions of the corporeal environment. Dementia Alzheimer's disease Illness Narrative Metaphysics Bioethics Medicine Self Story Hero myth Cartesian ego Nature Evolution Brain Mind Body Nonself Self (Philosophy) Self in literature Alzheimer's disease Alzheimer's disease -- Fiction Autobiographical memory in literature First person narrative Heroes -- Mythology Knowledge, Theory of Metaphysics Consciousness Bioethics Narration (Rhetoric) Thought and thinking Dementia Existentialism Self-perception Phenomenology Nonbeing Ontology
223	Rytmen bor i mina steg : En rytmanalytisk studie om kropp, stad och kunskap / The rhythm lives in my steps : A rhythm-analytical study of body, city and knowledge Johansson, Sara January 2013 (has links) This thesis brings together a fascination with the city and a keen interest in the knowledge process. The point of departure is the bodily, sensory and emotional experience. That the author uses her own perceptions and experiences and is preoccupied with her own knowledge process means that she writes herself into an autoethnographic context. She also experiments with the writing and allows it to take on a more literary form as she writes about her own sensory impressions and feelings. The term rhythmanalysis is employed as a way of assessing, exploring, interpreting and understanding the world that embraces the embodied experience. Human beings are embodied beings, a claim we can make by referring to our own experiences as well as how we perceive, communicate and interact. The study delves into two aspects of rhythmanalysis, first as a way of describing the knowledge process as rhythm-analytical, which implies that bodily experiences are equally important as intellectual ones, and secondly as a way of talking about the city as polyrhythmic. It follows upon the latter that embodied rhythmanalysis of the city is possible. The rhythmanalysis may ultimately be seen as a project aimed at overthrowing the Cartesian dualism between body and mind. That we are embodied has a methodological consequence that is as simple as it is essential: the scholar exists in the world she studies. The researcher is not a neutral observer. She is a co-creator. She is a body, placed in time, space and history. She is situated, which means that her knowledge is also situated. Thus, the rhythmanalysis encompasses the body, the senses and feelings, and can be described with one key word: movement. It finds support in theories that acknowledge the fluid, the becoming, the situated, the performative, the relational, the dynamic, the material. It seeks methods that experiment, that focus on practices rather than discourses, that are preoccupied with a movable world rather than a static one. rhythmanalysis rhythm methodology method knowledge process movement city walking body mind embodiment Cartesian dualism affect emotion feeling senses touch sensory ethnography non-representational theory phenomenology new materialism/material feminism situated knowledge autoethnography memory rytmanalys rytm metodologi metod kunskap rörelse stad promenad kropp medvetande förkroppsligande cartesiansk dualism affekt emotion känsla sinnen känsel sinnlig/sensorisk etnografi icke-representationell teori fenomenologi ny materialism/materiell feminism situerad kunskap autoetnografi minne
224	Property inference decision-making and decision switching of undergraduate engineers : implications for ideational diversity & fluency through movements in a Cartesian concept design space Shah, Raza January 2017 (has links) Design fixation is a phenomenon experienced by professional designers and engineering design students that stifles creativity and innovation through discouraging ideational productivity, fluency and diversity. During the design idea and concept generation phase of the design process, a reliance on perceptual surface feature similarities between design artefacts increases the likelihood of design fixation leading to design duplication. Psychologists, educators and designers have become increasingly interested in creative idea generation processes that encourage innovation and entrepreneurial outcomes. However, there is a notable lack of collaborative research between psychology, education and engineering design particularly on inductive reasoning of undergraduate engineering students in higher education. The data gathered and analysed for this study provides an insight into property inference decision-making preferences and decision switching (SWITCH) patterns of engineering undergraduates under similarity-based inductive judgements [SIM] and category-based inductive judgements [CAT]. For this psychology experiment, property induction tasks were devised using abstract shapes in a triad configuration. Participants (N = 180), on an undergraduate engineering programme in London, observed a triad of shapes with a target shape more similar-looking to one of two given shapes. Factors manipulated for this experiment included category alignment, category group, property type and target shape. Despite the cognitive development and maturation stage of undergraduate engineers (adults) in higher education, this study identified similarity-based inductive judgements [SIM] to play a significant role during inductive reasoning relative to the strength of category-based inductive judgements [CAT]. In addition to revealing the property inference decision-making preferences of a sample of undergraduate engineers (N = 180), two types of switch classification and two types of non-switch classification (SWITCH) were found and named SIM_NCC, SIM-Salient, Reverse_CAT and CAT_Switching. These different classifications for property inference switching and non-switching presented a more complex pattern of decision-making driven by the relative strength between similarity-based inductive judgements [SIM] and category-based inductive judgements [CAT]. The conditions that encouraged CAT_Switching is of particular interest to design because it corresponds to inference decision switching that affirms the sharing of properties between dissimilar-looking shapes designated as category members, i.e., in a conflicting category alignment condition (CoC). For CAT_Switching, this study found a significant interaction between a particular set of conditions that significantly increased the likelihood of property inference decisions switching to affirm the sharing of properties between dissimilar-looking shapes. Stimuli conditions that combined a conflicting category alignment condition (where dissimilar-looking shapes belong to the same category) with category specificity, a causal property and a target shape with merged (or blended) perceptual surface features significantly increased the likelihood of a property inference decision switching. CAT_Switching has important implications for greater ideational productivity, fluency and diversity to discourage design fixation within the conceptual design space. CAT_Switching conditions could encourage more creative design transformations with alternative design functions through inductive inferences that generalise between dissimilar artefact designs. The findings from this study led to proposing a Cartesian view of the concept design space to represent the possibilities for greater movements through flexible and expanding category boundaries to encourage conceptual combinations, greater ideational fluency and greater ideational diversity within a configuration design space. This study has also created a platform for further research into property inference decision-making, ideational diversity and category boundary flexibility under stimuli conditions that encourage designers and design students to make inductive generalisations between dissimilar domains of knowledge through a greater emphasis on causal relations and semantic networks.
225	Overeating, Obesity, and Weakness of the Will Sommers, Jennifer Heidrun 28 August 2015 (has links) The philosophical literature on akrasia and/or weakness of the will tends to focus on individual actions, removed from their wider socio-political context. This is problematic because actions, when removed from their wider context, can seem absurd or irrational when they may, in fact, be completely rational or, at least, coherent. Much of akrasia's apparent mystery or absurdity is eliminated when people's behaviours are considered within their cultural and political context. I apply theories from the social and behavioural sciences to a particular behaviour in order to show where the philosophical literature on akrasia and/or weakness of the will is insightful and where it is lacking. The problem used as the basis for my analysis is obesity caused by overeating. On the whole, I conclude that our intuitions about agency are unreliable, that we may have good reasons to overeat and/or neglect our health, and that willpower is, to some degree, a matter of luck. / Graduate / 0630 / 0573 / 0422 / felshereeno@aol.com akrasia action theory addiction agency Alison McIntyre applied ethics Bernard Williams body studies Bourdieu Cartesian dualism Christine Korsgaard compulsion continence deviance diet Distinction Donald Davidson dualism externalism incontinence inequality internalism intuition Irving K. Zola Marx medicalization morality Nichomachean Ethics Nomy Arpaly obesity epidemic orthorexia overeating overweight personal identity Petr Skrabanek Philip Kitcher philosophical intuition picoeconomics Pierre Bourdieu fat free will Gary Watson George Ainslie habitus healthism rat park rational choice rationality Richard Holton Robert Crawford social class stigma taste for luxury temperance utility maximization virtue weakness of the will willpower

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