Global ETD Search

21	Analýza 3D CT obrazových dat se zaměřením na stanovení hustoty kostních elementů / Analysis of 3D CT image data aimed at segmentation of bone elements and other specific tissue types Kodym, Oldřich January 2017 (has links) The goal of this thesis is to get acquainted with methods of determining bone mineral density from appropriate tissue types in diagnostic CT data and possibly modifying or extending them in order to make the bone quality diagnosis more reliable. The thesis begins by introducing the issue of determining bone quality. Next, a method that takes cortical bone deformations into account as well as bone mineral density is introduced. Accuracy assessment based on opinion of a medical expert suggests positive outcome of future objective accuracy assessment utilizing so far unavailable base of calibrated CT data, that is needed before deployment into clinical practice. If the accuracy of the suggested method is confirmed this way, this work provides a so far absent tool for fully automatic preventive diagnostics of osteoporosis.
22	On dysgraphia diagnosis support via the automation of the BVSCO test scoring : Leveraging deep learning techniques to support medical diagnosis of dysgraphia / Om dysgrafi diagnosstöd via automatisering av BVSCO-testpoäng : Utnyttja tekniker för djupinlärning för att stödja medicinsk diagnos av dysgrafi Sommaruga, Riccardo January 2022 (has links) Dysgraphia is a rather widespread learning disorder in the current society. It is well established that an early diagnosis of this writing disorder can lead to improvement in writing skills. However, as of today, although there is no comprehensive standard process for the evaluation of dysgraphia, most of the tests used for this purpose must be done at a physician’s office. On the other hand, the pandemic triggered by COVID-19 has forced people to stay at home and opened the door to the development of online medical consultations. The present study therefore aims to propose an automated pipeline to provide pre-clinical diagnosis of dysgraphia. In particular, it investigates the possibility of applying deep learning techniques to the most widely used test for assessing writing difficulties in Italy, the BVSCO-2. This test consists of several writing exercises to be performed by the child on paper under the supervision of a doctor. To test the hypothesis that it is possible to enable children to have their writing impairment recognized even at a distance, an innovative system has been developed. It leverages an already developed customized tablet application that captures the graphemes produced by the child and an artificial neural network that processes the images and recognizes the handwritten text. The experimental results were analyzed using different methods and were compared with the actual diagnosis that a doctor would have provided if the test had been carried out normally. It turned out that, despite a slight fixed bias introduced by the machine for some specific exercises, these results seemed very promising in terms of both handwritten text recognition and diagnosis of children with dysgraphia, thus giving a satisfactory answer to the proposed research question. / Dysgrafi är en ganska utbredd inlärningsstörning i dagens samhälle. Det är väl etablerat att en tidig diagnos av denna skrivstörning kan leda till en förbättring av skrivförmågan. Även om det i dag inte finns någon omfattande standardprocess för utvärdering av dysgrafi måste dock de flesta av de tester som används för detta ändamål göras på en läkarmottagning. Å andra sidan har den pandemi som utlöstes av COVID-19 tvingat människor att stanna hemma och öppnat dörren för utvecklingen av medicinska konsultationer online. Syftet med denna studie är därför att föreslå en automatiserad pipeline för att ge preklinisk diagnos av dysgrafi. I synnerhet undersöks möjligheten att tillämpa djupinlärningstekniker på det mest använda testet för att bedöma skrivsvårigheter i Italien, BVSCO-2. Testet består av flera skrivövningar som barnet ska utföra på papper under överinseende av en läkare. För att testa hypotesen att det är möjligt att göra det möjligt för barn att få sina skrivsvårigheter erkända även på distans har ett innovativt system utvecklats. Det utnyttjar en redan utvecklad skräddarsydd applikation för surfplattor som fångar de grafem som barnet producerar och ett artificiellt neuralt nätverk som bearbetar bilderna och känner igen den handskrivna texten. De experimentella resultaten analyserades med hjälp av olika metoder och jämfördes med den faktiska diagnos som en läkare skulle ha ställt om testet hade utförts normalt. Det visade sig att, trots en liten fast bias som maskinen införde för vissa specifika övningar, verkade dessa resultat mycket lovande när det gäller både igenkänning av handskriven text och diagnos av barn med dysgrafi, vilket gav ett tillfredsställande svar på den föreslagna forskningsfrågan. Dysgraphia Handwritten Text Recognition Graphemes Optical Character Recognition Artificial Neural Networks BVSCO-2 Sequence Alignment Dysgrafi handskriven textigenkänning grafem optisk teckenigenkänning artificiella neurala nätverk BVSCO-2 sekvensjustering Computer and Information Sciences Data- och informationsvetenskap
23	Iterabilitet, upprepning och permanens : En kritisk analys av debatten mellan Derrida och Searle / Iterability, repetition and permanence : A critical analysis of the debate between Derrida and Searle Gardfors, Johan January 2009 (has links) <p>The essay seeks to clarify some of the decisive but often obscured issues in the famous debate between Jacques Derrida and Jonn F. Searle. The debate commenced in 1977 with the publication in <em>Glyph</em> of Derrida’s lecture <em>Signature Event Context</em> from -71, followed by Searle’s <em>Reiterating the Differences</em>. A Reply to Derrida and subsequently Derrida’s reply <em>Limited Inc a b c …</em> which encouraged Searle to renew his criticism. I situate the debate within a philosophical context where questions of the aim of philosophy and the nature of philosophical writing cannot be excluded from the specific topics that are being discussed. Starting from Derrida’s controversial reading of Austin, where a few key points of criticism are placed under scrutiny, I proceed to problems of writing and communication where special attention is paid to the concept of iterability and Searle’s remark that this has been confounded with permanence in Derrida’s exposition. The concept of ”writing” is examined as a crux in the understanding of the two philosophers. And iterability is then found to be derieved from the theorization of absence in relation to that very concept. Iterability designates an essential possibility of absence and implies the possibility of every mark to be grafted onto new contexts of significance. Thus it draws the consequences of a general repeatability, within which difference is underscored as the inevitable outcome. The last section of the essay relates to the phenomenological project of investigating the genesis of idealization and traces the emergence of iterability in Derrida’s further writings on Husserl, where repetition can be perceived of as constitutive for ideality and thus for identity. Bearing on this observation, the type/token-distinction, proposed by Searle to undo the problem of iterability, is subjected to further inquiry and linked to the process of idealization, within which iterability is revealed to have a temporal relevance that also affects the notion of permanence. The claim is then made that iterability should be understood as a fundamentally ambiguous phenomenon through its dual relation to identity and difference. Its utility is found to be hinged upon the status of the possible. Finally, the question of iterability as concept is posed, which entails its interdependence upon notions of dissemination and différance.</p> iterability repetition permanence Derrida Searle Austin Husserl quotation citation citationality repeatability grapheme absence writing iterabilité Derrida Searle Austin Husserl écriture abscence graphème graphematicité identité différance iterabilitet upprepning permanens Derrida Searle Austin Husserl upprepbarhet grafem grafematicitet identitet idealitet frånvaro idealisering beständighet skrift talaktsteori talakter dissemination citat citationalitet repetition Philosophy subjects Filosofiämnen Theoretical philosophy Teoretisk filosofi
24	Iterabilitet, upprepning och permanens : En kritisk analys av debatten mellan Derrida och Searle / Iterability, repetition and permanence : A critical analysis of the debate between Derrida and Searle Gardfors, Johan January 2009 (has links) The essay seeks to clarify some of the decisive but often obscured issues in the famous debate between Jacques Derrida and Jonn F. Searle. The debate commenced in 1977 with the publication in Glyph of Derrida’s lecture Signature Event Context from -71, followed by Searle’s Reiterating the Differences. A Reply to Derrida and subsequently Derrida’s reply Limited Inc a b c … which encouraged Searle to renew his criticism. I situate the debate within a philosophical context where questions of the aim of philosophy and the nature of philosophical writing cannot be excluded from the specific topics that are being discussed. Starting from Derrida’s controversial reading of Austin, where a few key points of criticism are placed under scrutiny, I proceed to problems of writing and communication where special attention is paid to the concept of iterability and Searle’s remark that this has been confounded with permanence in Derrida’s exposition. The concept of ”writing” is examined as a crux in the understanding of the two philosophers. And iterability is then found to be derieved from the theorization of absence in relation to that very concept. Iterability designates an essential possibility of absence and implies the possibility of every mark to be grafted onto new contexts of significance. Thus it draws the consequences of a general repeatability, within which difference is underscored as the inevitable outcome. The last section of the essay relates to the phenomenological project of investigating the genesis of idealization and traces the emergence of iterability in Derrida’s further writings on Husserl, where repetition can be perceived of as constitutive for ideality and thus for identity. Bearing on this observation, the type/token-distinction, proposed by Searle to undo the problem of iterability, is subjected to further inquiry and linked to the process of idealization, within which iterability is revealed to have a temporal relevance that also affects the notion of permanence. The claim is then made that iterability should be understood as a fundamentally ambiguous phenomenon through its dual relation to identity and difference. Its utility is found to be hinged upon the status of the possible. Finally, the question of iterability as concept is posed, which entails its interdependence upon notions of dissemination and différance. iterability repetition permanence Derrida Searle Austin Husserl quotation citation citationality repeatability grapheme absence writing iterabilité Derrida Searle Austin Husserl écriture abscence graphème graphematicité identité différance iterabilitet upprepning permanens Derrida Searle Austin Husserl upprepbarhet grafem grafematicitet identitet idealitet frånvaro idealisering beständighet skrift talaktsteori talakter dissemination citat citationalitet repetition Philosophy subjects Filosofiämnen Theoretical philosophy Teoretisk filosofi

Page generated in 0.0478 seconds