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Conocimiento, Dirección de Gestión del. "Scival Research Intelligence." Elsevier, 2004. http://hdl.handle.net/10757/655384.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Scival Research Intelligence." Elsevier, 2021. http://hdl.handle.net/10757/655384.
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Salomón, Gebhard José Luis. "Ceremonias de escritura: Actos de habla y técnica confesional en Scivias de Hildegard von Bingen." Tesis, Universidad de Chile, 2007. http://repositorio.uchile.cl/handle/2250/108995.
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La investigación teórica en torno a la obra de Hildegard von Bingen ha asumido, en el último tiempo, una diversidad de perspectivas y enfoques que no sólo demuestran el carácter heterogéneo de sus textos, sino también el fundamento interdisciplinario que sostiene los actuales estudios literarios. En el caso del texto que aquí se analiza, su obra visionaria Scivias, los enfoques literarios y teológicos han suscitado lecturas interpretativas a partir, principalmente, del conjunto de sus alegorías visionarias, sin dejar por ello de recurrir a los diversos datos aportados por los enfoques históricos y biográficos que emanan de su lectura. En la tesis que aquí se presenta, se ha intentado una aproximación a un aspecto específico del Scivias, relacionado, por una parte, con la situación histórica de producción del texto, pero, por otra parte, con la propia representación de los momentos de enunciación que el texto contiene. Es decir, esta tesis busca definir los modos de representación en que Hildegard se constituye como autor y como objeto representado de su texto. Para ello, el marco teórico de esta tesis se inscribe dentro de la denominada teoría de los Actos de Habla, y en especial, del concepto de performatividad, entendiendo este último como una operación lingüística que teatraliza al sujeto enunciante y lo instala más allá de toda definición de su texto como lenguaje ficticio o lenguaje ordinario. Esta puesta en escena del sujeto, como autor representado, constituye el punto central de análisis de esta tesis. Tal movimiento de escenificación, sin embargo, es entendido como un acto ceremonial fuertemente reglamentado por las convenciones históricas y literarias que restringen la producción del texto. En este sentido, el concepto de ceremonia que aquí se atrae alude a los contextos institucionales que sostienen la enunciación de Scivias como un acto lingüístico performativo, como una ceremonia de escritura.
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Rivat, Jean-Michel. "Amélioration des performances des scies à ruban." Nancy 1, 1996. http://www.theses.fr/1996NAN10271.
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La diminution du diamètre moyen des bois débités en scierie favorisant l'utilisation des scies circulaires au premier débit, on note une évolution de la demande des clients en termes de qualité de la surface brute de sciage vers des niveaux d'exigences difficiles à satisfaire par les scies à ruban. La scie à ruban reste cependant, pour des raisons techniques et/ou économiques, l'outil le plus répandu. Notre objectif est donc, à la demande des industriels du sciage, d'améliorer les performances des scies à ruban en termes de qualité de surface et de productivité : obtenir une surface lisse comme la produirait une scie circulaire, tout en conservant les avantages du ruban. La qualité et la précision du sciage pouvant être rapprochés d'un comportement optimal de la lame de scie, l'étude s'est orientée vers le comportement des rubans: qu'est-ce qui fait qu'une lame est stable ? Nous avons d'abord procédé à l'identification, basée sur la bibliographie, des facteurs prépondérants : tension de montage, inclinaison des volants, préparation des lames. Puis nous avons développé et validé un banc d'expérimentations, qui est une scie industrielle instrumentée. Nous avons ainsi pu mettre au point ou adapter des modèles théoriques à la fois suffisamment précis pour rendre compte de la réalité du comportement des lames et suffisamment simples pour être utilisables en scierie, par exemple lors d'appuis techniques. Les modèles présentés, expérimentalement éprouvés, prennent en considération les paramètres prépondérants permettant de caractériser en milieu industriel le comportement d'une lame sur ses volants. Ils constitueront une base pour une meilleure compréhension et une amélioration de ce comportement des lames, directement utilisable en scierie et permettront de renseigner les fabricants de matériel sur le comportement de leurs équipements et de les guider dans leurs choix technologiques
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Azil, Azzedine. "Modélisation et simulation des systèmes dynamiques hybrides : formalisme Scicos et compilation." Paris 11, 2005. http://www.theses.fr/2005PA112089.
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Nous présentons dans cette thèse une méthodologie pour la modélisation et la simulation de ces systèmes dynamiques hybrides. Le principal objectif de cette modélisation est la simulation du système complet, i. E. De l'environnement avec son système de commande, de façon à répondre aux besoins du monde industriel comme par exemple la validation des lois de commandes. Notre principale contribution est l'extension du formalisme Scicos dans l'objectif d'avoir un formalisme mathèmatique bien défini qui permettera la modélisation et la simulation d'une large classe des systèmes dynamiques hybrides. Nous avons ensuite implémenté ce formalisme dans une sémantique de compilation bien claire, où nous avons développé les différents aspects et règles de la compilation afin d'obtenir un compilateur Scicos robuste et mieux adapté aux applications temps-réel. Ce nouveau compilateur génère un modèle récursif où toutes les activations sont synchrones. Il est cependant indispensable d'adapter le simulateur d'une manière récursive. La mise en oeuvre de la simulation est détaillée par l'analyse et l'adaptation des différentes fonctions astreintes à son exécution et à la gestion dans son évolution. Enfin, nous nous sommes intéressés à la génération automatique de code où nous avons proposé une nouvelle contribution qui offre la possibilité d'obtenir le code caractérisant l'algorithme de description du fonctionnement de n'importe quelle partie (discrète, continue et hybride) d'un schéma-bloc. En général ce code est utilisé soit pour l'accélération de la simulation Scicos (en remplaçant un super-bloc entier par un bloc standard) soit dans les applications temps réel embarquéesIn this thesis we present a methodology for modelling and simulation of hybrid dynamical systems. The main objective of this modelisation is the simulation of a complete system, i. E. The environment with control system and the way to satisfy the industerial needs such as validating the control laws. The main contribution of this thesis is extending the Scicos formalism to have a well defined mathemathical formalism to model and simulate a large class of hybrid dynamical system. Then we have implemented this formalism in compilation semantic that we have developped different aspects and compilation rules to make Scicos compiler robust and adapted to real-time applications. The new compiler generates a recursive model in which all activations are synchronous. So it is necerssary to use the simulator recursively. The simulation has been detailed with analysis and adaptation of different functions with their execution as wel as the their evolution. At last, the automatic code generation has been introduced. In this section, we have proposed a new contribution to obtain a code characterizing the description aslgorithm of any part of a Scicos diagram (discret or continuous). In general, this code is use ether to accelarate the scicos simulation ( by using a single standard block instead of a super block) or in real time applications
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Vick, Thais. "Scival Research Intelligence: herramienta estratégica para el análisis de la investigación." Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/656646.
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Thais Vick, consultora de Inteligencia de Investigación de Elsevier para América del SurEl Sistema de Bibliotecas de UPC organizó la videoconferencia "Scival Research Intelligence: herramienta estratégica para el análisis de investigación", la cual estuvo a cargo de Thais Vick, consultora de Inteligencia de Investigación de Elsevier para América del Sur, quien expuso las principales funcionalidades de este recurso, tales como: identificar y analizar nuevas tendencias de investigación emergentes, visualizar el rendimiento de nuestras investigaciones, utilizar conjuntos de métricas, crear grupos de investigadores, entre otros.
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Loza, Peñaran Miguel Angel. "Control dinámico de un reactor nuclear PWR utilizando software libre (SCICOS)." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2009. https://hdl.handle.net/20.500.12672/15122.
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Presenta en forma clara y sencilla el uso del software libre SCICOS para modelar la cinética y dinámica de un reactor nuclear PWR. Creemos que este trabajo puede servir para la enseñanza y fácil compresión del funcionamiento de un reactor nuclear que se estudia en el curso de física de reactores nucleares. Las ecuaciones diferenciales utilizadas en este modelo son de primer orden y de fácil compresión. El modelo utilizado es el de Cinética puntual que describe la población de los neutrones y de los núcleos precursores que finalmente determina la potencia del reactor nuclear PWR. El Modelo térmico, representa el calor transferido por el combustible y el refrigerante desde el núcleo hasta el generador de vapor. Por último, modelamos la reactividad total del reactor, que está formado por la reactividad de las barras de control y las reactividades relacionadas a la temperatura del combustible y refrigerante. Esta etapa mantiene sobre control al reactor nuclear. Se presentan ejemplos demostrativos en el capítulo V con respecto a la programación, datos y resultados.Trabajo de suficiencia profesional
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Stevens, Holger [Verfasser], Bernhard [Akademischer Betreuer] Spaan, and Wolfgang [Gutachter] Rhode. "SciFi meets GPU : Tracking performance and GPU trigger studies for the SciFi Tracker / Holger Stevens ; Gutachter: Wolfgang Rhode ; Betreuer: Bernhard Spaan." Dortmund : Universitätsbibliothek Dortmund, 2021. http://d-nb.info/1238349188/34.
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Marks, Raymond. "From republic to empire : Scipio Africanus in the Punica of Silius Italicus /." Frankfurt am Main [u.a.] : Lang, 2005. http://www.loc.gov/catdir/toc/fy0712/2005057940.html.
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SOUZA, J. A. "A sexualidade e o controle do corpo no Scivias e no Causae et Curae de Hidelgarda de Birgen (século XII)." Universidade Federal do Espírito Santo, 2013. http://repositorio.ufes.br/handle/10/3491.
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Previous issue date: 2013-06-28Durante o século XII, no Império Germânico surge uma religiosa beneditina, Hildegarda de Bingen (1098-1179) que travará um confronto através de suas obras escritas visando a situação sócio-política e espirituais do Império. Uma luta para reformar a situação do laicato e do clero do Império Germânico que persiste e que ameaça manchar as estruturas da Ecclesia, da Igreja de Roma. Hildegarda se coloca dentro de uma perspectiva reformista gregoriana, embora viva no século posterior ao início deste movimento. Contudo, persistem os problemas que afetam a Igreja na Alemanha: a simonia, o nicolaismo ou o casamento dos padres, entre outros problemas que incomodavam Hildegarda e outros reformistas. Nossa pesquisa versará sobre um recorte destas questões reformistas, as que dizem respeito à sexualidade sob a perspectiva hildegardiana, no Scivias e no Causae et curae. A sexualidade sob o ponto de vista desta monja do século XII contrapõe em seus textos contradições e divergências. Nosso objetivo é compreender a perspectiva de Hildegarda e apresenta-la ao público leitor. Ela conciliava duas concepções, uma concepção naturalista e que aceitava a sexualidade como um fato natural e outra concepção mais conservadora, que via na sexualidade uma mera via para a reprodução e a criação dos filhos, ambas, contudo, centravam-se na tese agostiniana da finalidade reprodutiva da sexualidade conjugal. Quanto à divisão clero e laicos, ela é acentuada e Hildegarda estabelece uma hierarquia que coloca os primeiros no topo, devido a sua distância dos fluxos corporais, o sangue e o sêmen, que nada mais é do que sangue transformado devido ao calor provocado pelo desejo. Os laicos, legitimados enquanto casados, ficam na base daqueles que estão aptos à salvação, mas o seu mérito é menor e receberão menos no fim dos tempos. O máximo mérito é dos virgens e continentes, ou seja, dos monges, seguidos dos sacerdotes celibatários, contanto que obedeçam aos preceitos e mantenham-se em sua ordem.
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Bjernestad, Karl. "Söktjänster för akademiskt bruk. En jämförande undersökning mellan Google, Google Scholar och Scirus." Thesis, Högskolan i Borås, Institutionen Biblioteks- och informationsvetenskap / Bibliotekshögskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19919.
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This paper is a comparing study of the retrieval effectiveness of the search engines Google, Google Scholar and Scirus. The aim is to find out how good they are at retrieving relevant academic material in the research-field of Library and Information science. The thirty search questions where based on actual information needs collected from exams within the field of Library and Information Science. This method was used to prevent that none of the search engines were given an advantage because of construction of the information needs. The first twenty retrieved documents on the retrieval lists are examined for academic content and relevance. The methods of measuring the effectiveness of the search engines are Precision, Relative Recall and Jaccards Index. Academic content both relevant and non-relevant material for the information need is judged and the result is presented in percent. Binary scale is used for judging the relevance of the retrieved documents. Guiding principles are being followed when it comes to judging whether a document contains academic content or not. Citation only, book links, inactive, duplicate and mirror links are all considered as being irrelevant. Scirus gets the highest scores, thereafter Google and Google Scholar gets the lowest score. All three search engines don’t retrieve the same relevant material frequently so it could be advisable to use all three for greater coverage.
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Kappattanavar, Abhishek Mallikarjuna. "Model Transformation in context of Driver Assistance System." Master's thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-203859.
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In today’s world we see that Embedded Systems forms a major part in the life of a human being. Almost every device today has an electronic chip embedded in it. When it comes to automotive, these electronic devices are multiplying. This has resulted in innovative methods of developing Embedded Systems. Among them, Model Based Development has become very popular and a standard way of developing embedded systems. Now, we can see that most embedded systems, especially the automotive systems, are being developed using Model development tools like Simulink. In the design and development of Driver Assistance System, Model Based Design (MBD) plays an important role from system design and simulation to code generation. Modeling tool Matlab/Simulink is now among the most popular tools. Due to the proprietary nature of Simulink and challenges in requirement elicitation phase the industry is looking towards an open source alternative, such as Scicos. Since, most of the OEMs are still using Simulink, there is a need for interoperability between Simulink and Scicos. The present work proposes metamodels for Simulink and Scicos, and Model transformation using these Metamodels for the inter-operability.
In order to develop the model transformation the metamodels for Simulink and Scicos were developed using EMF Ecore. These metamodels conform to OMGs MOF Standards. These metamodels were used in developing the transformation definition using the language QVTo. First a simple model was developed, and transformation rules were applied and verified using it. Then a Simulink subsystem of a cross wind assistance system was subjected to forward transformation. The outputs of the model before transformation and that after transformation were compared. They were found to give the same output as desired. Thus, verifying the transformation definition. An attempt was made to achieve reverse transformation. A subsystem in Scicos was considered for reverse transformation. After subjecting it to transformation, an intermediate model conforming to Simulink metamodel was obtained. This shows that the interoperability between Scicos and Simulink can be achieved.
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PIMENTEL, BRUNO NOTHLICH. "LUSITANIA SCIFI: FROM THE PERIPATETIC TO GO INSIDE THE SCREEN." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34836@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROO presente trabalho encerra quatro textos autônomos e interdependentes, com o objetivo de pensar a Ficção Científica, notadamente o Sci-Fi lusitano. No Capítulo Um apresenta-se na forma de um ensaio autoetnográfico (VERSIANI, 2005) a hipótese que a origem da Ficção Científica está no Terremoto de Lisboa de 1755 e a partir do qual as borders e frontiers (OSTERHAMMEL, 2014) de gênero literário ficaram estabelecidas. No Capítulo Dois comenta-se sobre as três grandes narrativas (LYOTARD, 2009) teóricas que tentam tratar da Ficção Científica: a filosofia do futuro oriunda de Gilles Deleuze, a história das ideias proposta por escritores Sci-Fi e a de gênero ficcional ainda sem clara definição pela crítica. No Capítulo Três realiza-se treze estudos de caso do Sci-Fi lusitano: do neogótico de Álvaro do Carvalhal e Fialho de Almeida como precedente; dos marcos inaugurais da crônica Lisboa no anno 2000 (1906), de Mello de Mattos, e do conto A estranha morte do professor Antena (1915), de Mário de Sá-Carneiro; das ficções científicas alinhadas ao salazarismo; da Colecção Fantástico, da Editorial Rolim, 1983-1990; e da homônima coletânea de contos electro-punk Lisboa no ano 2000, publicado em 2012. No Quarto Finalle o pesquisador periférico pondera sobre a vida de laboratório (LATOUR, 2008) em relação ao Sci-Fi produzido no Centro (CONNELL, 2012) e em perspectiva comparada com Epistemologias do Sul (SANTOS, 2010).
This work presents five autonomous and interdependent texts, with the purpose of thinking about Science Fiction, notably the Lusitanian Sci-Fi. Chapter Zero introduces, as an auto-ethnographic essay (VERSIANI, 2005), the hypothesis that the origin of Science Fiction came from the Lisbon s Earthquake of 1755 and from which the borders e frontiers (OSTERHAMMEL, 2014) of the literary gender were established. Chapter One analyses the three grand narratives (LYOTARD, 2009) of theory that attempt to explain Scientific Fiction: the philosophy of the future by Gilles Deleuze, the history of ideas proposed by Sci-Fi writers and the fictional genre still without a clear definition by the critics. Chapter Tw takes the readers on to the library of the gaseous planet of ScifiLusitânia, a workshop (PIGLIA, 2004) built upon the chronotopes notion (GUMBRECHT, 2010) for the purpose of drawing the literary formation (CANDIDO, 2000) of the Portuguese Science Fiction. Chapter Three brings forward, synchronously, brief case studies on Lusitanian Sci-Fi: of the chronicle Lisboa no anno 2000 (1906), by Mello de Mattos, and the short story A estranha morte do professor Antena (1915), by Mario de Sá-Carneiro; of scientific fictions aligned with Salazarism; of Colecção Fantástico, by Editorial Rolim, 1983-1990, and of the homonym collection of electro-punk short stories Lisboa no ano 2000, published in 2012. Quarto Finalle weighs methodological problems and regarding the Sci-Fi produced at the Center (CONNELL, 2012) in comparative perspective to Southern Epistemology (SANTOS, 2010).
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Menne, Janine [Verfasser], Bernhard [Akademischer Betreuer] Spaan, and Kevin [Gutachter] Kröninger. "The LHCb SciFi Tracker: studies on scintillating fibres and development of quality assurance procedures for the SciFi serial production / Janine Menne ; Gutachter: Kevin Kröninger ; Betreuer: Bernhard Spaan." Dortmund : Universitätsbibliothek Dortmund, 2018. http://d-nb.info/1160443890/34.
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Wang, Zhiyong. "Self-Calibrated Interferometric/Intensity Based Fiber Optic Temperature Sensors." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/9690.
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To fulfill the objective of providing robust and reliable fiber optic temperature sensors capable of operating in harsh environments, a novel type of fiber optic sensor system titled self-calibrated interferometric/intensity-based (SCIIB) fiber optic temperature sensor system is presented in this thesis including the detailed research work on the principle analysis, design, modeling, implementation and performance evaluation of the system.
The SCIIB fiber optic temperature sensor system shows us an innovative fiber optic sensor system compared with traditional fiber optic sensors. In addition to the general benefits of the traditional fiber optic sensors, the SCIIB fiber optic sensor system possesses several unique advantages. By taking advantage of the Split-Spectrum technique developed in Photonics Lab at Virginia Tech, the SCIIB sensor technology possesses the capability of Self-Calibration that can fully compensate for the fluctuation of optical source power and the variations of fiber losses. It combines the advantages of both the interferometric-based and the intensity-based fiber optic sensors in a single system. A multimode fiber-based SCIIB temperature sensor system is designed and successfully implemented. Comprehensive experiments are performed to evaluate the principle of SCIIB technology and the performance of the multimode fiber-based SCIIB temperature sensor system. The experiment results illustrate that the development of the SCIIB fiber optic temperature sensor system provides a reliable tool for the temperature measurement capable of operation in high temperature harsh environments.Master of Science
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Malcolm, Peter J., University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Effects of root temperatures and genotype on the growth of peach rootstocks and their scions." THESIS_CSTE_SFH_Malcolm_P.xml, 2004. http://handle.uws.edu.au:8081/1959.7/710.
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Spring shock syndrome (SSS) is a condition where flowering and leaf development in peach and nectarine trees is delayed and those leaves that do develop are often small and discoloured. Trees experiencing spring shock syndrome yield poorly. To learn more about the development of this syndrome, this thesis has examined the influence of root zone temperature (RZT) and genotype on the growth of peach rootstocks and the scions grafted onto them. Other factors that influence the quality of peach seedling rootstocks were also examined. Initial trials examined the influence of Okinawa (a low chill cultivar) and Golden Queen (a high chill cultivar)rootstocks on the expression of SSS. Studies found that multiple stems could originate from either multiple seeds within a single stone or from axils originating from the base of cotyledons. The incidence of both conditions was heavily influenced by variety, thus suggesting that an active selection program based on the elimination of these traits would be beneficial to the stone fruit nursery industry.Doctor of Philosophy (PhD)
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Malcolm, Peter. "Effects of root temperatures and genotype on the growth of peach rootstocks and their scions." View thesis, 2004. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20050714.155735/index.html.
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Andersson, Cecilia, and Marie Pilbrant. "Google Scholar eller Scirus för vetenskapligt material på webben? En utvärdering och jämförelse av återvinningseffektivitet." Thesis, Högskolan i Borås, Institutionen Biblioteks- och informationsvetenskap / Bibliotekshögskolan, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17567.
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This thesis evaluates and compares the retrieval effectiveness of the two search engines Google Scholar and Scirus, which both specialises in indexing scholarly material on the web as well as journal articles. Thirty search queries are used and the first twenty retrieved documents for each query are examined for topical relevance and scholarly content. The search queries are based on legitimate information needs taken from a scientific questionbox on the web. Queries are expressed with advanced search operators and are the same for both search engines. Precise relevance criteria are set up and a binary scale is used when judging. Inactive, duplicate, and mirror links are all considered non-relevant, as well as documents judged as non-scholarly. Two methods of measuring precision are used: average precision at each DCV for all search queries, and average precision at each DCV for each search query; which both credit ranking of relevant documents. As for scholarly content, both relevant and non-relevant documents are judged, and results are expressed in per cent. When judging scholarly content, guiding principles are being followed. There is not a great difference in results between the two search engines, although Google Scholar provides slightly higher results for all precision measures as well as being the best in retrieving scholarly material. However, Scirus is the better at retrieving relevant documents at DCV = 1 and DCV = 2, as showed by average precision at each DCV for all search queries.Uppsatsnivå: D
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Fowler, Bo. "'The astrological diary of God' and the SciFi-satiric-comic-philosophical novel." Thesis, University of East Anglia, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302089.
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Chabrier, Patrick. "Amélioration de la qualité et du rendement matière des sciages : cas des scies circulaires." Nancy 1, 1997. http://www.theses.fr/1997NAN10056.
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Ces dernières années, nous assistons à un développement de l'emploi des scies circulaires en scierie. Les impératifs de production, l'évolution des besoins de la clientèle, les progrès de la technologie incitent les scieurs à choisir de plus en plus souvent la scie circulaire comme scie de reprise, bien que celle-ci génère, par rapport au ruban une perte au trait de scie beaucoup plus grande. Dans un souci d'optimisation du rendement matière, les recherches se sont naturellement orientées vers une réduction du trait de scie par la diminution de l'épaisseur de la lame, ce qui affaiblit sa rigidité latérale, donc sa stabilité. Or les vibrations des lames de scie sont reconnues pour être le phénomène le plus nuisible lors de la coupe. Nous nous sommes alors interrogés sur comment trouver un compromis entre les problèmes qu'impliquent la voie, la stabilité de la lame, le rendement matière et la précision de sciage. Nous avons tout d'abord réalisé une synthèse des recherches menées à ce jour sur le comportement statique et dynamique, aussi bien a vide que pendant la coupe, des lames de scie circulaire. Cette recherche bibliographique nous a permis d'identifier les paramètres prépondérants qui influencent la stabilité d'une lame de scie circulaire, à savoir : les forces centrifuges, les contraintes résiduelles provenant du tensionnage, les gradients de température, la composante latérale des efforts de coupe. Puis, nous avons intégré ces paramètres à une modélisation éléments finis, afin de calculer la déformée en flexion prise par une lame de scie circulaire pendant la coupe. Enfin, nous avons développé un banc d'expérimentations, qui reprend des éléments standards d'une déligneuse, afin de valider nos modèles et répondre aux attentes des industriels. Nous avons ainsi pu, en collaboration avec un fabricant d'outils, rechercher les conditions optimales de préparation d'une lame de scie circulaire pour un processus de coupe donnéFor many years, circular saws are more and more used in sawmills. Production imperatives, evolution of customer needs, technology progresses, make the sawmillers choose more and more often circular saws for rip sawing, though kerf losses in this case are higher than for bandsaw blades. So as to increase lumber yield, researches have been made in reducing kerf losses by decreasing saw body. Width, which affects its rigidity, thus its stability. But circular saw vibrations are known to be the worst phenomenon during cutting. So we aim to find the best compromise between problems involved by kerf, saw stability, lumber yield improvement and sawing accuracy. First, we have studied research works made on static and dynamic behaviour, during idling or cutting, of circular saws. Thus, we have been able to identify the main parameters affecting saw stability, centrifugai forces, residual stresses from tensioning, blade temperature and lateral cutting forces. Then, we have introduced these parameters in a finite element analysis so as to compute the bending deflexion of circular saw. Finally, we have developed an experimental device, based on sorne units of an industrial edger, so as to validate this numerical work and face the industrial demand. Thus, in collaboration with a cutting tools manufacturer, we have been able to research the best conditions to prepare circular saws for a cutting process
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Scimia, Emilia Maddalena [Verfasser], and Roland [Akademischer Betreuer] Frankenberger. "Einfluss von Trocknung und Schmelzrandanschrägung auf die Randspaltbildung von Klasse-II-Kompositfüllungen / Emilia Maddalena Scimia ; Betreuer: Roland Frankenberger." Marburg : Philipps-Universität Marburg, 2016. http://d-nb.info/1119318084/34.
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Kinoshita, Yoshihiro. "Development and psychometric properties of a semi-structured clinical interview for psychosis sub-groups (SCIPS)." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72786/.
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Background: Schizophrenia has long been considered to be remarkably heterogeneous, and there have been a number of attempts to identify sub-groups of this disorder which are more homogeneous. Nevertheless, most of these have not been used in either research or clinical practice to any great extent, because diagnoses by way of these strategies would be unstable over time and impractical. In such circumstances, the vulnerabilitystress model has led to the development of a new concept of sub-grouping schizophrenia into 4 sub-types – drug related, traumatic, anxiety, and stress sensitivity. This conceptualisation is quite promising, not only because it may provide stable and practical diagnoses, but also because the terminology used therein is useful when it comes to destigmatising those who are currently diagnosed with schizophrenia. Methodology: In order to adapt this concept for practical use, this project set out to develop a semi-structured interview for making diagnoses according to it. Thereafter, psychometric properties of the interview were examined. This assessment tool was then used to confirm the longitudinal stability of the diagnosis. In order to establish the construct validity of this classification system, it was examined if the anxiety and stress sensitivity sub-groups in this system were different in terms of their external validators. Three psychopathological variables – evaluative belief, fear of negative evaluation from others, and depression – were assessed in a cross-sectional study during this process of validation. Three other clinical variables – two for the duration of hospitalization and one for the risk of self harming – were also used in a retrospective cohort study for the evaluation of the predictive value of the differentiation. Results and conclusion: Both the English and Japanese versions of the semi-structured clinical interview for psychosis sub-groups (SCIPS) were developed to sub-group patients into 4 categories, and their reliability and concurrent validity were established. The 6 month stability of SCIPS diagnoses of the drug related, anxiety and stress sensitivity sub-types was also indicated through a longitudinal study. A preliminary analysis provided little evidence of construct validity. The risk of self harming was, however, suggested as being associated with a distinction between the anxiety and stress sensitivity categories when the SCIPS was applied to a broader range of psychosis, including schizophrenia and schizoaffective disorder.
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Dändliker, Thomas. "Optimisation de la densité de reboisement en fonction des grades de qualité des bois sciés." Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/69047.
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Des semis mis en terre aux produits sciés, la création de richesse guide les efforts du sylviculteur, l'objectif étant de générer des revenus qui surpassent les coûts de plantation et d'entretiens. Au début de ce processus, le choix de la densité de reboisement constitue une étape décisive quant à l'évolution des caractéristiques dendrométriques et qualitatives des arbres. La taille de la plus grosse branche du premier « 5 m » de l'arbre est un élément important du déclassement visuel du bois de sciage, et peut être considérablement affectée par les scénarios sylvicoles. Cette étude a analysé l'influence de trois facteurs, que sont l'espacement initial, l'indice de qualité de station et la position sociale de l'arbre dans le peuplement, sur le grade du bois dans les plantations non éclaircies d'épinette blanche [Picea glauca (Moench) Voss], d'épinette noire [Picea mariana (Mill.) BSP] et de pin gris [Pinus banksiana Lamb] au Québec, Canada. L'objectif principal était d'acquérir une meilleure compréhension du lien entre la qualité future du bois scié et le choix de l'espacement initial des plantations. Un objectif secondaire était aussi de déterminer si un indice de qualité de station plus élevé et un statut social supérieur de l'arbre au sein du peuplement affectent les qualités de bois produites à partir de la première grume de 5 m à la base de la tige. Les traitements d'espacement initiaux comportaient une large gamme de densités de plantation, allant de 1111 à 4444 tiges ha-1. Un total de 2657 arbres provenant de 149 sites a été échantillonné, avec une moyenne d'âge de peuplement de 26 ans. La plus grosse branche ainsi que le statut ont été enregistrés pour le développement du modèle. L'analyse des données a alors permis d'identifier que la position sociale de l'arbre dans le peuplement (dominant, codominant, intermédiaire), l'indice du site et la densité du peuplement constituaient des variables clés affectant la taille de la branche, et donc, par voie de conséquence, impactaient les qualités du bois. Les résultats de l'étude ont aussi montré un taux de déclassement visuel plus élevé pour les planches de bois de petite dimension (c.-à-d. 2x4) que pour les planches plus grandes (2x6), toutes provenant de plantations de conifères au Québec, Canada. Enfin, il a été constaté davantage de déclassements pour le pin gris que pour les épinettes blanches et noires, en particulier lorsque la densité de plantation diminuait en dessous de 2000 tiges par ha.
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Magnusson, Ludvig, and Johan Rovala. "AI Approaches for Classification and Attribute Extraction in Text." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-67882.
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As the amount of data online grows, the urge to use this data for different applications grows as well. Machine learning can be used with the intent to reconstruct and validate the data you are interested in. Although the problem is very domain specific, this report will attempt to shed some light on what we call strategies for classification, which in broad terms mean, a set of steps in a process where the end goal is to have classified some part of the original data. As a result, we hope to introduce clarity into the classification process in detail as well as from a broader perspective. The report will investigate two classification objectives, one of which is dependent on many variables found in the input data and one that is more literal and only dependent on one or two variables. Specifically, the data we will classify are sales-objects. Each sales-object has a text describing the object and a related image. We will attempt to place these sales-objects into the correct product category. We will also try to derive the year of creation and it’s dimensions such as height and width. Different approaches are presented in the aforementioned strategies in order to classify such attributes. The results showed that for broader attributes such as a product category, supervised learning is indeed an appropriate approach, while the same can not be said for narrower attributes, which instead had to rely on entity recognition. Experiments on image analytics in conjunction with supervised learning proved image analytics to be a good addition when requiring a higher precision score.
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Bosc, Olivier. "La foule criminelle : positivisme, politique et criminologie en Italie à la fin du xix siècle. Scipio Sighele (1863-1913) et l'Ecole lombrosienne." Paris 9, 2001. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2001PA090018.
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Nguyen, John, and Kasper Lindén. "Creating a Back Stock to Increase Order Delivery and Pickup Availability." Thesis, KTH, Hälsoinformatik och logistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252798.
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Apotek Hjärtat wants to keep developing their e-commerce website and improve retrieval and delivery of orders to customers. Click and Collect and Click and Express are two options for retrieving e-commerce orders that are available if all products in the order are present in the store. By implementing a back stock in the stores with popular e-commercial items, all products of an order will more often be present in the store. The back stock will in such a way increase the availability of Click and Collect and Click and Express. The goals for the study are to conduct a pilot study, compare methods and possible solutions to implement a model to reach the goals. The pilot study was made by studying previous works in mathematical statistics methods and machine learning methods. The statistical method was accomplished through the analytical tool Statistical Package for the Social Sciences (SPSS) and Java. The machine learning method was accomplished through Python and the Scikit-learn library. The machine learning method was performed by a regression algorithm that was used to find relations between category sales and pollen forecasts. The statistical and machine learning methods were compared to each other. Both gave identical results, but the machine learning method was more functional and easier to further develop and consequently was chosen. Several models were created for a few selected product categories. The categories that did not work for the models had an unrealistic amount of sold products. These amounts could be negative or extremely high when unknown inputs were introduced. A simulation was made of the back stock to estimate how it would increase the availability of Click and Collect/Click and Express. The machine learning models could need more data for more accurate predictions. A conclusion could be made though that is possible to predict the amount of sold products of certain categories such as Allergy and Child Medicine with pollen halt taken into account.Apotek Hjärtat vill fortsätta utveckla sin e-handelssida och förbättra upphämtning och leverans av ordrar till kund. Click and Collect och Click and Express är två val för att hämta upp e-handelsordrar som finns tillgängliga om alla produkter i ordern finns i butik. Genom att implementera ett baklager i butiker med populära unika ehandelsprodukter kommer alla produkter i en order oftare att finnas i butik. Baklagret kommer på så vis öka tillgängligheten av Click and Collect och Click and Express. Målen är att utföra en förstudie, samt att jämföra och hitta en bra lösning att implementera en modell för att uppnå målen. Förstudien gick ut på att analysera tidigare arbeten inom matematiska statistikmetoder och maskininlärningsmetoder. Den statistiska metoden utfördes genom det analytiska verktyget Statistical Package for the Social Sciences (SPSS) och Java. Maskininlärningsmetoden utvecklades med hjälp av Python och Scikit-learn biblioteket. Maskinlärningsmetoden utfördes genom en regressionsalgoritm som användes för att ta fram flera modeller för relationer mellan försäljning av kategorier och pollenprognoser. Statistiska metoden och maskininlärningsmetoden jämfördes med varandra. Båda gav identiska resultat men maskininlärning var mer funktionellt och enklare att vidareutveckla och därför valdes den metoden. Flera olika modeller lyckades tas fram för en del produktkategorier. De kategorier som inte fungerade för modellerna hade orealistiska mängder sålda varor. Dessa mängder kunde vara negativa eller extremt höga när okända inputs introducerades. Med hjälp av simulationen var det möjligt att uppskatta hur baklagret skulle öka tillgängligheten av Click and Collect/Express. Maskininlärningsmodellerna skulle behöva mer data, som kommer i framtiden, för att ge en mer precis prediktering mellan pollenvärden. Som slutsats är det möjligt att använda dem i framtiden för vissa kategorier som allergi och barnmedicin.
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Franco, Pérez Álvaro Moisés. "Uso y utilidad de las herramientas de búsqueda bibliográfica de acceso gratuito relacionadas con las ciencias de la salud (PubMed, Google Scholar y Scirus)." Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/40685.
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Objetivo: Evaluar las diferentes herramientas de búsqueda de acceso gratuito relacionadas con las ciencias de la salud: PubMed (MeSH y texto libre), Google Scholar y Scirus. Método: Análisis bibliométrico de la producción científica recuperada en las diferentes herramientas de búsqueda seleccionadas. Los datos se obtuvieron aplicando en cada una de ellas, una ecuación de búsqueda sencilla (mediante el descriptor nursing care) y una compuesta según el esquema: Población (neoplasms), Intervención (nutritional status), Resultado (quality of life). Para calcular la muestra a analizar, se efectuó la estimación de parámetros poblacionales en población infinita (valor esperado 0,5; precisión 0,05; nivel de confianza 0,95), realizándose la selección mediante muestreo aleatorio simple sin reemplazo. Resultados: Se estudiaron 1175 referencias: 124 PubMed (MeSH); 386 Google Scholar, 386 Scirus y 279 PubMed (texto-libre). De ellas, 904 eran artículos publicados en 350 revistas, presentando 20 o más referencias: Supportive Care in Cancer con 36 (3,98%; IC95%: 2,71 - 5,26), Clinical Nutrition con 32 (3,54%; IC95%: 2,34-4,47) y Nutrición Hospitalaria con 20 (2,21%; IC95%: 1,25-3,17), con diferencias significativas entre PubMed (MeSH) y Google Scholar y Scirus (p<0,01 en ambos casos). Dispersión de la literatura (Ley de Bradford): núcleo principal (1º tercil), 23 revistas (6,57%; IC95%: 3,98-9,17) con 302 artículos publicados (33,41%; IC95% 30,33-36,48). Estadísticos relacionados con el Factor de Impacto del núcleo: Media 4,522 ± 4,014 y Máximo 18,372 (Journal of Clinical Oncology). Edad media de los documentos de 8,17 ± 6,54 (IC95% 7,79-8,55), Mediana 6 años (Índice de Burton Kleber), Máximo 34 años e Índice de Price 42,84%. Sólo observándose diferencias entre Google Scholar y PubMed (texto libre). Acceso al texto completo en 1001 ocasiones (86,07%; IC95%: 84,08-88,06), en 474 casos (40,76%; IC95% 37,93-43,58) gratuitamente. En conjunto, y en cada uno de los buscadores, existe evolución ascendente del número de publicaciones (1978-2012), ajustándose a un modelo de curva exponencial (R=0,93 y R2=0,86). Conclusiones: La temática estudiada continúa vigente según los indicadores de actualidad. Las revistas más referidas coinciden con publicaciones sobre ciencias de la nutrición y oncología de alto impacto, observándose un crecimiento exponencial y amplio acceso al texto completo, destacando la presencia de una revista iberoamericana (Nutrición Hospitalaria) con vocación internacional. Así, PubMed sigue siendo la mejor opción para búsquedas clínicas pertinentes. Google Scholar es la mejor herramienta para búsquedas rápidas de artículos a texto completo y Scirus sólo es válido si se dispone de suscripción a ScienceDirect.
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Hamrat, Sonia. "Etude des échanges thermiques et conception d’un système de refroidissement pour le système de lecture du trajectographe SciFi de LHCb." Thesis, Université Clermont Auvergne (2017-2020), 2017. http://www.theses.fr/2017CLFAC104/document.
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Dans le cadre de l’évolution du plus grand accélérateur circulaire de particules « LHC », un important programme de mise à niveau sur l’ensemble des détecteurs qui le constitue a été lancé. Parmi eux, on retrouve la mise à niveau du détecteur LHCb qui comprend le remplacement complet de plusieurs sous-détecteurs. La fréquence de lecture élevée de 40MHz, sans précédent dans une expérience de physique des particules, et l’environnement de rayonnement sévère lié à l’augmentation de l’intensité du LHC, sont les principaux défis à relever par les nouveaux sous-détecteurs. Le travail présenté dans ce manuscrit, décrit une petite partie de l’évolution du détecteur LHCb. Le développement et la construction d’un nouveau trajectographe à grande échelle, basé sur une nouvelle technologie à fibres scintillantes «SciFi», lues avec des photomultiplicateurs au silicium «SiPM», est l’un des projets clés du programme de mise à niveau de LHCb. La première partie, consiste à étudier les échanges thermiques et à concevoir un système de refroidissement pour chaque Read-Out Box « ROB » qui contient deux cartes électroniques frontales « FE », et qui permettent de lire les données du détecteur. Ces dernières possèdent une dissipation thermique d’environ 110W.Pour assurer le bon fonctionnement des composants électroniques, il est obligatoire de mettre en place un refroidisseur. Des contraintes importantes sont prisent en compte dans cette étude, la première représente l’espace limité en regard du besoin du système de refroidissement, des interfaces électroniques et mécanique, la seconde concerne les SiPM. Reliés à l’électronique par des câbles flexibles, elles sont situées à proximité de l’électronique « FE » et leur température de fonctionnement doit être parfaitement réglée autour des -40°C. Des travaux de simulations numériques sur les logiciels FloTHERM et ANSYS ont été menés sur le banc expérimental réalisé au sein du laboratoire, et qui nous ont permis de déterminer la solution de refroidissement la mieux adaptée. Cette étude nous a aussi montré qu’il est plus que nécessaire d’intégrer des interfaces thermiques « IT» telles que des pâtes thermiques afin d’assurer un meilleur transfert de chaleur entre les composants électroniques et le refroidisseur. La deuxième partie, représente une étude approfondie sur les interfaces thermiques qui sont un point délicat de transfert de chaleur, car elles peuvent avoir plusieurs dizaines de pour cent de la résistance thermique globale. Pour garantir une utilisation adéquate et durable de ces matériaux, plusieurs paramètres ont été vérifiés, en particulier la dureté, la consistance (pas de production de graisse ou d’huile) et la conductivité thermique, grâce à un banc de mesures adapté d’après la méthode normalisé ASTM D5470, grâce auquel on a pu mesurer le flux de chaleur qui traverse l’échantillon d’interface thermique testé et qui est généré par une source chaude et un source froide qui sont montées aux extrémités de notre banc.Grâce à l’installation CHARME (CERN) et à la plate-forme PAVIRMA (Campus des Cézeaux), une série de mesure d’irradiations aux neutrons et aux rayons X sont également effectuées, correspondant à l’environnement dans lequel elles seront exposées dans l’expérience, d’un côté pour identifier les dégradations et changements possibles sur les résistances thermiques par l’analyse de l’impédance thermique, de l’autre pour identifier l’interface thermique qui convient le mieux à notre application et qui permet d’assurer un excellent échange thermique et donc un bon refroidissement de l’électronique frontale au sein du trajectographe du détecteur LHCbIn the context of the evolution of the biggest circular accelerator of particles «LHC», an important program of upgrade on all the detectors which establishes itself was thrown. Among them, we find the upgrade of the detector LHCb which includes the complete replacement of several sub-detectors. The frequency of high reading of 40MHz, an unprecedented in an experiment of physical appearance of particles, and the environment of severe radiation bound to the increase of the intensity of the LHC, are the main challenges by the new sub-detectors. The work presented in this manuscript, described as a small part of the evolution of the LHCb detector. The development and the construction of a new wide-scale tracker, based on a new technology with scintillating fiber «SciFi», read with photomultipliers to the silicon «SiPM», is one of the key projects of the LHCb upgrade program. The first part, consists in studying the thermal exchanges and designing a cooling system for every Read-Out Box «ROB» which contains two electronic front-end « FE », and which allow to read the data of the detector. The latter has a thermal dissipation about 110W. To ensure the smooth running of electronic components, it is compulsory to set up a cooler. Important constraints are taken into account in this study, the first one represents the space limited compared to the need for the cooling system, the electronic interfaces and mechanical, the second concerns the SiPM. Connected with the electronics by flexible cables, they are located near the electronics «FE» and their temperature of operation is perfectly settled around -40 ° C. Works of digital simulations on the software FloTHERM and ANSYS were led on the experimental bench realized within the laboratory, and which allowed us to determine the best adapted solution of cooling. This study also showed to us that he is more than necessity to integrate thermal interfaces «IT» such as thermal pastas to assure a better transfer of heat between electronic components and cooler. The second part, represents an in-depth study on the thermal interfaces which are a delicate point of transfer of heat, because they can have dozens percent of the global thermal resistance. To guarantee an adequate and sustainable use of these materials, several parameters were verified, in particular hardness, consistency (no production of fat or oil) and the thermal conductivity, thanks to a bench of measures adapted according to the method normalized ASTM D5470, with this bench we could measure the flow of heat through the tested thermal interface sample and which is generated by a hot source and a cold source that are mounted at the ends of our bench.With the installation CHARME (CERN) and PAVIRMA (Cézeaux), a series of measure of irradiations at the neutrons and the X-rays are also made, correspond-ing to the environment in which they will be exposed in the experience, on one side to identify the damages and the possible changes on the thermal resistances by the analysis of the thermal impedance, the other one to identify the thermal interface which suits best our application and which allows to assure an excellent thermal exchange and thus a good cooling of the frontal electronics within the trajectographe of the detector LHCb
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Rhodes, Jalen. "Examining Collegiate Students’ Perceptions of Date Rape and Sexual Assault." TopSCHOLAR®, 2019. https://digitalcommons.wku.edu/theses/3144.
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The purpose of this study was to examine how collegiate males and females perceived date rape and sexual assault by looking into their views on sexual scripts, consent, and alcohol in dating situations. Participants consisted of 323 male and female undergraduate students enrolled in psychology classes at a mid-south university. All participants were directed to an online questionnaire and were randomly assigned to one of four versions of a vignette where a man and a woman are at a party together. After reading their vignette, all participants answered researcher-created questions pertaining to the behavior of the people in the vignette and societal attitudes about sex and alcohol. All participants also completed shortened versions of the Acceptance of Modern Myths about Sexual Aggression scale and Sexual Experiences Survey. Results indicated that if college students believe men should take the lead in sexual encounters, they also expect the man to be persistent, even if the woman “hits the brakes.” Additionally, as many participants agreed and disagreed that alcohol plays a part for when a man rapes a woman. However, the participants did not rely on the specific nonverbal dating behaviors outlined in this study to engage in sexual activity. The relevance of these findings to current research, the implications for school psychologists working in middle and high schools, limitations, and future directions are discussed.
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Torres, Nogueira Luisa Maria. "Les lésions osseuses tranchantes (par scies) et tranchantes contondantes : analyse des mécanismes lésionnels et des instruments à l'origine de ces lésions." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0272/document.
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Ce travail expérimental s’est intéressé aux lésions osseuses produites par des scies et par une hachette, sur des échantillons humains et animaux. En ce qui concerne les scies, 170 faux départs ont été étudiés au stéréomicroscope en utilisant cinq scies différentes. Les scies universelles se comportent comme les scies à tronçonner, du fait de l’inclinaison vers l’arrière de chaque dent. La largeur minimum du faux départ permet de classer les lésions selon les catégories de Symes. Les profils convexes indiquent l’utilisation d’une scie universelle ou d’une scie à tronçonner. Les profils concaves sont beaucoup plus variés, et indiquent l’utilisation d’une scie à refendre. La forme des murs permet de déterminer le type d’avoyage sauf quand ils sont droits ou difficiles à analyser. Parmi les critères secondaires, l’aspect des stries au fond de la lésion s’est révélé de grande importance pour identifier le type d’avoyage. En ce qui concerne la hachette, nous avons utilisé un protocole standardisé produisant des lésions osseuses de petites dimensions. Le stéréomicroscope a constaté le caractère vertical des stries, qui s’explique par le mouvement vertical effectué par l’instrument au moment de l’impact. Le microscope électronique à balayage a permis de décrire parfaitement les lésions, de comprendre la surélévation des berges (« uprising ») et l’effet exercé à distance (« lateral pushing back »). La présence du latéral pushing back et de stries verticales permet d’affirmer que les lésions osseuses ont été produites par un instrument tranchant contondant. Ces caractères se pérennisent même après carbonisationIn this experimental work bone lesions produced by saws and a hatchet on human and animal samples were analyzed. With regard to the saws, 170 experimental false starts lesions were studied under stereomicroscope produced by five different saws. Universal saws behave like crosscut saws, because each tooth displays a tilt backwards. The minimum width of the kerf makes it possible to classify bone lesions according to Symes’ categories. Convex profiles indicate the use of a universal or crosscut saw. Concave profiles vary a great deal and indicate the use of a rip saw. The shape of the walls allows for determining the type of set except when they are straight or difficult to analyze. Among the secondary criteria, the appearance of the striae on the kerf floor is able to point the type of set. For the study of bone lesions by a hatchet a standardized device was used to produce small bone lesions. The stereomicroscope was able to observe the vertical striae explained by the vertical movement of the instrument at the time of impact. The scanning electron microscope allowed for a detailed analysis of bone lesions and made it possible to understand the uprising and the lateral pushing back. The presence of a lateral pushing back and of vertical striae is sufficient to determine that the bone lesions were achieved by a sharp blunt instrument. These characters are visible even after carbonization
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Barreto, Carlos Vinícius Garcia. "Uso da irrigação por capilaridade na produção de porta-enxertos de limão cravo na fase de tubetes." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256892.
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Orientador: Roberto TestezlafTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola
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Resumo: A produção de mudas de citros no estado de São Paulo se caracteriza pelo emprego de sistemas manuais de irrigação por aspersão com manejo de lamina superestimada, implicando em baixas eficiências de aplicação de água. O emprego da irrigação por capilaridade, ou subirrigação, e uma opção com condições técnicas para maximizar o desenvolvimento de mudas cítricas e aumentar a eficiência do emprego da água. O objetivo do presente trabalho foi desenvolver um sistema de irrigação que utilize os atributos físicos do substrato, permitindo a condução ascendente da água aplicada subsuperficialmente e que atenda adequadamente as necessidades de irrigação da cultura. A pesquisa foi dividida em duas etapas: avaliação das características físicas dos substratos comerciais de casca pinus e fibra coco para determinar aquele que apresenta as melhores características de retenção de umidade e ascensão de água para aplicação na irrigação por capilaridade e analisar o crescimento vegetal de porta-enxertos de limoeiro cravo cultivado em tubete irrigado no equipamento desenvolvido para diferentes posições do nível de saturação no interior do tubete, comparando ao sistema tradicional de irrigação. Nessa etapa, foram avaliados porta-enxertos de limoeiro cravo, aos 30 dias apos a semeadura (30 DAS), cultivados em 3 tratamentos: T1, aplicação de água por capilaridade com nível de saturação a 2/3 da altura do tubete, T2, aplicação de água por capilaridade a 1/3 da altura e T3, aplicação de água por chuveiros, com analises fisiológicas e fotométricas das plantas sob esses tratamentos. Os resultados de avaliação dos substratos demonstraram que os materiais com maior granulometria (grosseiros) não apresentam boa retenção de água, possuindo alta aeração e menor ascensão da água. Constatou-se maior atuação da capilaridade em substratos de menor granulometria (finos), com maior retenção e ascensão de água e com elevação de umidade sob níveis de tensão de água facilmente disponível as plantas. O substrato fino de fibra de coco se mostrou mais adequado por possuir maior capacidade de retenção de água, boa elevação de água por capilaridade e água disponível as plantas em toda sua coluna. A analise da aplicação da irrigação por capilaridade, demonstrou que o tratamento T1 condicionou as plantas a uma menor transpiração sob maior resistência estomática, menor aquecimento das folhas e maior potencial da água na folha na antemanha. O status hídrico-fisiológico das plantas sob T1 resultou em maior assimilação de carbono, expressando maior porte, maior enfolhamento e abreviamento do ciclo em relação as plantas cultivas sob T2 e, principalmente, sob T3. As plantas sob T2 apresentaram resultados próximos a T1, ao passo em que as plantas cultivadas sob T3 apresentaram maior perda de água pelos estômatos, refletindo pior status hídrico e em menor desenvolvimento vegetal. A partir dos resultados obtidos foi possível concluir que o sistema de irrigação por capilaridade demonstrou-se adequado ao cultivo de porta-enxertos de limoeiro cravo, com boa resposta da produção vegetal para o nível de água no tubete nas duas posições do nível de saturação avaliadas, e apresentando possibilidade de reaproveitamento da água de irrigação
Abstract: The nurseries production of Sao Paulo State is characterized by the application of manual sprinkler hose system with over scheduled irrigation depth, resulting in low water application efficiency. The use of capillary irrigation, or subirrigation, is a technical alternative with conditions to maximize the citrus rootstocks growing and to increase the water use efficiency. The objective of present work was to develop an irrigation system that applies the physical attributes of substrates in capillary water rise process from a subsuperficial water source to attend plant water demands. The methodology was divided in two phases: physical evaluation of pine and coconut fiber commercial substrates to determine the most suitable for water holding and water rise capacities for capillary irrigation; and analysis of growing response of Citrus limonia Osbeck rootstocks cultivated in a capillary irrigation equipment for two positions of water saturation level inside of recipients, comparing with the usual irrigation system. In this step, were evaluated rootstocks of Citrus limonia Osbeck at 30 days after sowing (DAS), under three treatments, T1, water application by capillary trays with water level at 2/3 of height from the base of recipients, T2, water level at 1/3 of height, and T3, manually sprinkler hose irrigation, with analysis of physiological and physical parameters of the plants. The results of substrates evaluation confirmed that the materials with greater average particle size distribution (coarse) did not showed good water holding capacity, with high aeration and lower water rise. It was observed good capillary rise in fine textured substrates, with greater water holding and water rise with low water tension profile. The coconut substrate showed more suitable for capillarity application due to the higher water holding capacity, adequate capillary water rise and easily available moisture to the plants in entire substrate column. The analysis of capillary irrigation effects in rootstock growing showed that T1 treatment conditioned the plants to a lower transpiration rate under greater stomata resistance, lower leaf temperature and higher leaf water potential at predawn. The water-physiological relations for T1 resulted in greater carbon assimilation, expressing in bigger plants with more leaves that resulted in crop cycle reduction when compared with T2, and mainly T3 plants. The rootstocks under T2 grew like T1 plants, nevertheless T3 presented more water loss through stomata, reflecting worse water status and lower plant growing. It was possible to conclude from the results, that capillary irrigation is suitable for Citrus limonia Osbeck rootstock growing in nursery production, showing adequate crop response for both saturation levels evaluated and the possibility to be adapted for irrigation water reuse
Doutorado
Agua e Solo
Doutor em Engenharia Agrícola
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Paulavets, Anastasiya. "Návrh systému pro doporučování pracovních příležitostí." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193343.
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This thesis deals with recommender systems in the field of e-recruitment. The main objective is to design a job recommender system for career portal UNIjobs.cz. First, the theoretical background of recommender systems is provided. In the following part, specific properties of job recommender systems are discussed, as well as existing approaches to recommendation in the e-recruitment environment. The last part of the thesis is dedicated to designing a recommender system for career portal UNIjobs.cz. The output of that part is the main contribution of the thesis.
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Simonin, Guillaume. "Améliorations des performances d'outils de coupe pour la première transformation du bois." Thesis, Nancy 1, 2010. http://www.theses.fr/2010NAN10117/document.
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La société SIAT-BRAUN, premier de sciage résineux de France, présente une problématique industrielle liée à ses outils de coupe. Les scies débitant le bois doivent être les plus fines possibles afin de préserver la matière d'oeuvre, mais aussi très robustes pour supporter les conditions de coupe qui ne cessent de se durcir. La maîtrise de la matière première ainsi que des paramètres de réglage des machines sont des conditions sine-qua-none du bon travail des outils. Ainsi, nous arrivons à des situations limites où les règles actuelles ne répondent pas correctement aux exigences recherchées. Le mémoire comporte une étude technico-économique de la scierie et de son évolution, ainsi que du matériau bois employé. L'explication du fonctionnement de la ligne de sciage de l'entreprise, une des plus modernes, d'Europe, achève cette présentation.L'analyse des connaissances actuelles englobe les différents paramètres et calculs relatifs à l'usinage du bois, ainsi que les divers éléments composant une scie circulaire et ses géométries associées. Les interactions entre tous ces éléments sont aussi présentées. Le métier d'affûteur, personne en charge de la maintenance des outils et garante de leur bon fonctionnement, est présenté ainsi que des améliorations mises en place au niveau de la méthode ainsi que des machines de l'atelier.Pendant cette thèse, de nombreuses améliorations ont été réalisées sur les différents outils de coupe, afin de répondre aux exigences de la production en gardant une fiabilité la plus importante possible. La dernière partie proposera les améliorations restant à valider sur l'adéquation entre les matériaux et la géométrie angulaire des scies circulairesSIAT-BRAUN is the largest industrial sawmill in France and faces typical industrial challenges with its sawing technologies.Wood saws must be as thin as possible, in order to maximize yield and save raw material and robust enough to endure tougher and tougher sawing conditions. Good raw material control and optimized machine parameterization are critical to ensure good results. The current theoretical background, does not always match these requirements and we are therefore always testing its limits.An economical and technical analysis of the sawmill and its evolution makes up the first part of this thesis. We will be detailing the key operations of one of the most modern sawmill in Europe.Current knowledge analysis must include the various parameters and calculations necessary to machine wood, as well as the different blade components and their geometric specifications. We will discuss the interactions between these elements. The job of the filer (the person in charge of tool maintenance) will also be discussed, as well as several improvements implemented in the workshop.Many improvements have been suggested and implemented while working on this thesis, in order to react to production needs while preserving reliability. In the last section of this thesis we will discuss several improvements that remain to be validated on how to best match appropriate cutting materials and blade geometry
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Caissy, Gerald Laurent. "Impact of distance/distributed project management on different software development methodologies /." View document on the Internet, 2005. http://library.athabascau.ca/drr/download.php?filename=scis/GeraldCaissy.PDF.
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Hannah, Jason. "Design pattern usage in designing web services for a video game inventory application /." View PDF document on the Internet, 2005. http://library.athabascau.ca/drr/download.php?filename=scis/JasonHannah.PDF.
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Kroeker, P. Paul. "Technology to facilitate interaction in mobile learning /." View PDF document on the Internet, 2005. http://library.athabascau.ca/drr/download.php?filename=scis/KroekerPaulEssay.pdf.
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Trygstad, Emily J. "Excellence Redefined: The Evolution of Virtus in Ancient Rome." Miami University Honors Theses / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=muhonors1271972341.
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Mogini, Andrea. "Search for the Lepton Flavour Violating decay B0 → K∗0τ±μ∓ with the LHCb detector and pattern recognition for the upgrade with the SciFi Tracker." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS367.
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Dans cette thèse je présente les résultats d'études sur la performance d'algorithmes dédiés à la reconstruction des trajectoires de particules chargés avec le trajectographe SciFi, qui sera installé dans l'expérience LHCb pendant son upgrade. Les performances augmentent en termes d'efficacité de reconstruction ainsi que de temps de calcul si une ou deux couches de fibres scintillantes additionnelles sont utilisées. Les stratégies de reconstruction alternatives testées sans couches additionnelles permettent d'obtenir un gain en termes de temps de calcul au détriment des efficacités de reconstruction. Je présente aussi la recherche pour la désintégration violant la conservation de la saveur leptonique B0 → K∗0τ±μ∓, en détaillant la sélection employée sur les données et le traitement statistique utilisé pour quantifier la sensibilité de l'analyse et obtenir des valeurs de l'ordre de O(10−5) pour les limites attenduesIn this thesis I report the results of performance studies conducted on the pattern recognition algorithm dedicated to the Scintillating Fibre Tracker to be installed in the LHCb detector during its upgrade. The performance increases both in terms of reconstruction efficiencies and in processing time when working with additional scintillating fibre layers. The alternative tracking strategies tested allow for an improvement on the timing end at the cost of the reconstruction efficiencies. I also detail the selection and limit extraction procedure put in place for the search of the Lepton Flavour Violating decay B0 → K∗0τ±μ∓, finding expected limits at the level of I also detail the selection and limit extraction procedure put in place for the search of the Lepton Flavour Violating decay B0 → K∗0τ±μ∓, finding expected limits of O(10−5)
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Panopoulos, Vasileios. "Near Real-time Detection of Masquerade attacks in Web applications : catching imposters using their browsing behavor." Thesis, KTH, Kommunikationsnät, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183777.
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This Thesis details the research on Machine Learning techniques that are central in performing Anomaly and Masquerade attack detection. The main focus is put on Web Applications because of their immense popularity and ubiquity. This popularity has led to an increase in attacks, making them the most targeted entry point to violate a system. Specifically, a group of attacks that range from identity theft using social engineering to cross site scripting attacks, aim at exploiting and masquerading users. Masquerading attacks are even harder to detect due to their resemblance with normal sessions, thus posing an additional burden. Concerning prevention, the diversity and complexity of those systems makes it harder to define reliable protection mechanisms. Additionally, new and emerging attack patterns make manually configured and Signature based systems less effective with the need to continuously update them with new rules and signatures. This leads to a situation where they eventually become obsolete if left unmanaged. Finally the huge amount of traffic makes manual inspection of attacks and False alarms an impossible task. To tackle those issues, Anomaly Detection systems are proposed using powerful and proven Machine Learning algorithms. Gravitating around the context of Anomaly Detection and Machine Learning, this Thesis initially defines several basic definitions such as user behavior, normality and normal and anomalous behavior. Those definitions aim at setting the context in which the proposed method is targeted and at defining the theoretical premises. To ease the transition into the implementation phase, the underlying methodology is also explained in detail. Naturally, the implementation is also presented, where, starting from server logs, a method is described on how to pre-process the data into a form suitable for classification. This preprocessing phase was constructed from several statistical analyses and normalization methods (Univariate Selection, ANOVA) to clear and transform the given logs and perform feature selection. Furthermore, given that the proposed detection method is based on the source and1request URLs, a method of aggregation is proposed to limit the user privacy and classifier over-fitting issues. Subsequently, two popular classification algorithms (Multinomial Naive Bayes and Support Vector Machines) have been tested and compared to define which one performs better in our given situations. Each of the implementation steps (pre-processing and classification) requires a number of different parameters to be set and thus a method called Hyper-parameter optimization is defined. This method searches for the parameters that improve the classification results. Moreover, the training and testing methodology is also outlined alongside the experimental setup. The Hyper-parameter optimization and the training phases are the most computationally intensive steps, especially given a large number of samples/users. To overcome this obstacle, a scaling methodology is also defined and evaluated to demonstrate its ability to handle larger data sets. To complete this framework, several other options have been also evaluated and compared to each other to challenge the method and implementation decisions. An example of this, is the "Transitions-vs-Pages" dilemma, the block restriction effect, the DR usefulness and the classification parameters optimization. Moreover, a Survivability Analysis is performed to demonstrate how the produced alarms could be correlated affecting the resulting detection rates and interval times. The implementation of the proposed detection method and outlined experimental setup lead to interesting results. Even so, the data-set that has been used to produce this evaluation is also provided online to promote further investigation and research on this field.Det här arbetet behandlar forskningen på maskininlärningstekniker som är centrala i utförandet av detektion av anomali- och maskeradattacker. Huvud-fokus läggs på webbapplikationer på grund av deras enorma popularitet och att de är så vanligt förekommande. Denna popularitet har lett till en ökning av attacker och har gjort dem till den mest utsatta punkten för att bryta sig in i ett system. Mer specifikt så syftar en grupp attacker som sträcker sig från identitetsstölder genom social ingenjörskonst, till cross-site scripting-attacker, på att exploatera och maskera sig som olika användare. Maskeradattacker är ännu svårare att upptäcka på grund av deras likhet med vanliga sessioner, vilket utgör en ytterligare börda. Vad gäller förebyggande, gör mångfalden och komplexiteten av dessa system det svårare att definiera pålitliga skyddsmekanismer. Dessutom gör nya och framväxande attackmönster manuellt konfigurerade och signaturbaserade system mindre effektiva på grund av behovet att kontinuerligt uppdatera dem med nya regler och signaturer. Detta leder till en situation där de så småningom blir obsoleta om de inte sköts om. Slutligen gör den enorma mängden trafik manuell inspektion av attacker och falska alarm ett omöjligt uppdrag. För att ta itu med de här problemen, föreslås anomalidetektionssystem som använder kraftfulla och beprövade maskininlärningsalgoritmer. Graviterande kring kontexten av anomalidetektion och maskininlärning, definierar det här arbetet först flera enkla definitioner såsom användarbeteende, normalitet, och normalt och anomalt beteende. De här definitionerna syftar på att fastställa sammanhanget i vilket den föreslagna metoden är måltavla och på att definiera de teoretiska premisserna. För att under-lätta övergången till implementeringsfasen, förklaras även den bakomliggande metodologin i detalj. Naturligtvis presenteras även implementeringen, där, med avstamp i server-loggar, en metod för hur man kan för-bearbeta datan till en form som är lämplig för klassificering beskrivs. Den här för´-bearbetningsfasen konstruerades från flera statistiska analyser och normaliseringsmetoder (univariate se-lection, ANOVA) för att rensa och transformera de givna loggarna och utföra feature selection. Dessutom, givet att en föreslagen detektionsmetod är baserad på käll- och request-URLs, föreslås en metod för aggregation för att begränsa problem med överanpassning relaterade till användarsekretess och klassificerare. Efter det så testas och jämförs två populära klassificeringsalgoritmer (Multinomialnaive bayes och Support vector machines) för att definiera vilken som fungerar bäst i våra givna situationer. Varje implementeringssteg (för-bearbetning och klassificering) kräver att ett antal olika parametrar ställs in och således definieras en metod som kallas Hyper-parameter optimization. Den här metoden söker efter parametrar som förbättrar klassificeringsresultaten. Dessutom så beskrivs tränings- och test-ningsmetodologin kortfattat vid sidan av experimentuppställningen. Hyper-parameter optimization och träningsfaserna är de mest beräkningsintensiva stegen, särskilt givet ett stort urval/stort antal användare. För att övervinna detta hinder så definieras och utvärderas även en skalningsmetodologi baserat på dess förmåga att hantera stora datauppsättningar. För att slutföra detta ramverk, utvärderas och jämförs även flera andra alternativ med varandra för att utmana metod- och implementeringsbesluten. Ett exempel på det är ”Transitions-vs-Pages”-dilemmat, block restriction-effekten, DR-användbarheten och optimeringen av klassificeringsparametrarna. Dessu-tom så utförs en survivability analysis för att demonstrera hur de producerade alarmen kan korreleras för att påverka den resulterande detektionsträ˙säker-heten och intervalltiderna. Implementeringen av den föreslagna detektionsmetoden och beskrivna experimentuppsättningen leder till intressanta resultat. Icke desto mindre är datauppsättningen som använts för att producera den här utvärderingen också tillgänglig online för att främja vidare utredning och forskning på området.
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Meric, Renaud. "L' appréhension spatiale de l'écoute : un mouvement entre imagination et perception. L'exemple de la musique électroacoustique." Montpellier 3, 2009. http://www.biu-montpellier.fr/florabium/jsp/nnt.jsp?nnt=2009MON30063.
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La notion d’espace est devenue cruciale dans la musique au XXe siècle et plus particulièrement dans la musique électroacoustique. En prenant en compte l’idée d’appréhension de l’écoute, nous voulons retrouver un lien entre le corps, l’espace, l’écoute et le son : nous nous appuyons ici en particulier sur l’idée de « chair », développée par le philosophe Maurice Merleau-Ponty dans ses derniers ouvrages et sur la notion d’« énaction » introduite par le neurobiologiste Francisco J. Varela. L’écoute peut être ainsi définie à la fois comme le geste de saisie et ce qui est saisi (les sons) : l’espace appréhendé devient alors un mouvement complexe où s’entrelacent et se confondent les gestes de saisie et les mouvements propres au son. Le son, appréhendé dans l’espace, peut être ainsi considéré comme un phénomène mouvant, éphémère et complexe, sans cesse situé entre imagination et perception. Les musiques électroacoustiques et informatiques, en corrélation avec leurs recherches sur l’espace sonore, ont favorisé cet aspect évanescent du son. Pour montrer cela, nous terminons notre thèse en analysant les œuvres électroacoustiques de compositeurs qui ont accordé, chacun à leur manière, une place importante à l’espace sonore : Concret PH de Iannis Xenakis, Paysage, personnage, nuage de François Bayle, Gymel de Horacio Vaggione et Audible ecosystemics 3a, background noise study d’Agostino Di ScipioThe notion of space became crucial in the music of the 20th century and more specifically in the electroacoustic music. By taking account of the idea of grasp of listening, we want to find a link between body, space, listening and sound: we are here based in particular on the idea of “flesh”, developed by the philosopher Maurice Merleau-Ponty in his last works and on the concept of “enaction” introduced by the neurobiologist Francisco J. Varela. In this way, the listening can be defined as the grasp gesture as well as what is grasped (sounds): then, the grasped space becomes a complex movement where the grasp gestures and the movements peculiar to the sound interweave and merge themselves. The sound, grasped in space, can be thus considered as a moving, ephemeral and complex phenomenon, constantly set between imagination and perception. The electroacoustic and computer musics, in correlation with their researches on sound space, have nurtured this evanescent aspect of sound. To illustrate that, we finish our thesis by analyzing the composers’ electroacoustic music works who, each one in his own way, has attached an importance to sound space: Concret PH by Iannis Xenakis, Paysage, personnage, nuage by François Bayle, Gymel by Horacio Vaggione and Audible ecosystemics 3a, background noise study by Agostino Di Scipio
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Tate, Eric Jordon. "Quantum Mechanics." Digital Commons at Loyola Marymount University and Loyola Law School, 2018. http://www.kaltura.com/tiny/8izg0.
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Gatti, Laura. "La poétique du fragment chez les moralistes de la "La Voce"." Paris 3, 2002. http://www.theses.fr/2002PA030081.
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Dans les années 1908-1916, les "moralistes" de "La Voce" soutiennent, contre l'esthétique de Croce alors dominante en Italie, le lien organique entre l'art et la morale, entre la forme et le contenu, ainsi que la supériorité de la notion critique de "grandeur" sur la notion de "beauté". Cependant Slataper, Boine et Jahier écrivent des textes qui affichent leur caractère désagrégé et fragmentaire. La thèse se propose de définir les propriétés graphiques, structurelles et narratives qui caractérisent l'écriture fragmentaire dans Il mio Carso, Frantumi, Ragazzo et Con me e con gli alpini, par l'étude du processus de "construction" des textes. En suivant une perspective de critique génétique puis textuelle, elle a pour objet d'investigation tous les stades du parcours rédactionnel des œuvres, à savoir esquisses, ébauches, brouillons, copies au net, versions imprimées et ouvrages édités. L'analyse montre que d'une part ces textes sont ce qui "reste" de la "brisure" des catégories du discours et de l'éclatement des genres littéraires, et de l'autre, qu'ils contiennent encore - tant au niveau formel que thématique - les traces d'une aspiration à l'unité et à la totalité. La poétique du fragment chez les "moralistes" est l'expression de la fracture irrémédiable qui marque le début du XXe siècle : la conscience de l'incomplétude comme seule image possible de la totalitéDuring the period 1908-1916, the "moralists" of "La Voce" maintain, contrary to the aesthetics of Croce at that moment prevailing in Italy, the organic relationship between art and moral, form and contents, and the superiority of the critical notion of "grandeur" to that of "beauty". Nevertheless, Slapter, Boine and Jahier write texts that evidence their dissolved and fragmentary style. Through the study of the "construction" process of the texts, the thesis aims to define the graphical, structural and narrative properties which distinguish the fragmentary writing in Il mio Carso, Frantumi, Ragazzo and Con me e con gli alpini. By following a perspective of genetic criticism and textual analysis, the thesis studies all the different phases in the realisation of the works, i. E. Sketches, outlines, rough copies, final copies, printed versions and published texts. The analysis shows that on one hand these texts are what "remains" of the breaking-up of the discourse categories and the disintegration of the literary genders, and on the other hand that these still contain - on a formal as well as on a thematic level - traces of an aspiration for unity and totality. The poetics of the fragment in the "moralists" is the expression of the irremediable fracture that characterises the beginning of the twentieth century : the awareness of incompleteness as the only possible image of totality
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Ekelhof, Robert Jan [Verfasser], Bernhard [Akademischer Betreuer] Spaan, and Reiner [Gutachter] Klingenberg. "Studies for the LHCb SciFi Tracker : development of modules from scintillating fibres and tests of their radiation hardness / Robert Jan Ekelhof. Betreuer: Bernhard Spaan. Gutachter: Reiner Klingenberg." Dortmund : Universitätsbibliothek Dortmund, 2016. http://d-nb.info/1112561986/34.
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Mattos, Carla Cristina Nunes. "Participação infantil em contexto escolar: os caçadores de ideias." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22959.
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Mestrado em Ciências da EducaçãoA fim de compreender e refletir sobre as perspectivas infantis acerca de seus percursos escolares de insucesso escolar e a sua vida na escola, como também contribuir para a reconstrução do lugar social estas crianças, desenvolveu-se um trabalho de investigação participativa com um grupo de crianças com defasagem idade/ciclo com histórias de repetência, abandono e ingresso tardio na vida escolar, de uma escola pública municipal, no município de Niterói, no Rio de Janeiro, Brasil. Esta pesquisa integrou dois estudos interligados: um voltado à investigação participativa com o grupo de crianças, em situação de vulnerabilidade social e exclusão dentro do próprio sistema escolar, de modo a: Por um lado, incentivar e criar condições para que estas crianças debatam e reflitam sobre o que significa a escola para elas e sobre seus percursos escolares, partindodas suas próprias histórias. Por outro, contribuir para que ao longo do processo, estas crianças, co-investigadoras, reconstruam o seu lugar social e façam chegar a sua voz ao mundo dos adultos. O outro estudo voltado para a representação do grupo de docentes da escola, acerca das representações que tinham sobre as palavras “criança” e “aluno” e as expressões “sucesso escolar” e “insucesso escolar”. Este estudo surge na pespectiva de ampliar o estudo principal para um melhor entendimento do contexto social, identificar os elementos relevantes e salientes das RS e sua utilização como ferramenta para fomentar reflexão com o grupo participante. O quadro teórico foca temas de alusão à infância, com o avanço dos estudos da sociologia da infância, bem como assuntos voltados para a cultura escolar e exclusão silente no ambiente escolar, além das representações sociais e sua importância no cotidiano e nas práticas das pessoas. As técnicas e dispositivos de investigação, de acordo com o método da investigação participativa, centraram-se na conversa com as crianças, grupos focais, entrevistas individuais, dentre outras. Foi aplicado um inquérito por questionário aos docentes no âmbito do estudo sobre as representações sociais. Durante o processo de investigação o grupo foi desafiado e incentivado a discutir e refletir sobre a escola, sobre o porquê de estarem nestas salas de aceleração, sobre as interrelações sociais construídas no ambiente escolar e sobre o que elas e os professores pensavam sobre as dificuldades de aprendizagem. Proporcionamos um ambiente de conversa e discussão com o objetivo de compreendermos o que pensam as crianças sobre esta temática, já que ninguém pergunta suas opiniões acerca de seus percursos escolares e de suas vivências na escola. A concretização de um vídeo, pelas crianças, sobre seus direitos, o repensar, pela escola, do uso do recreio em função da perspetiva das crianças, e consequentes mudanças introduzidas nesse espaço/tempo e ponderações das crianças a respeito da escola, seus dilemas e percursos escolares constituíram oportunidades para as crianças ressignificarem o seu lugar social.
In order to understand and reflect on children's perspectives on their school failure paths and their school life, as well as to contribute to the reconstruction of the social place these children, a participatory research work was developed with a group of children with age / cycle lag with stories of repetition, abandonment and late entry into school life, from a municipal public school, in the city of Niterói, Rio de Janeiro, Brazil. This research integrated two interrelated studies: one focused on participatory research with the group of children in a situation of social vulnerability and exclusion within the school system itself, in order to: On the one hand, encourage and create conditions for these children to debate and reflect about what the school means to them and about their school paths, starting from their own stories. On the other hand, to help throughout the process, these children, co-investigators, rebuild their social place and give their voice to the world of adults. The other study aimed at representing the group of teachers of the school, about the representations they had about the words "child" and "student" and the expressions "school success" and "school failure". This study aims to broaden the main study for a better understanding of the social context, to identify the relevant and salient elements of SR and its use as a tool to foster reflection with the participating group. Theoretical framework focuses on themes related to childhood, with the advancement of the studies of the sociology of childhood, as well as subjects aimed at school culture and silent exclusion in the school environment, as well as social representations and their importance in daily life and people practices. The research techniques and devices, according to the method of participatory research, focused on the conversation with children, focus groups, individual interviews, among others. A questionnaire survey was applied to teachers in the framework of the study on social representations. During the research process the group was challenged and encouraged to discuss and reflect on the school, on why they were in these accelerating rooms, on the social interrelations built in the school environment and what they and teachers thought about the difficulties of learning. We provide an environment of conversation and discussion in order to understand what children think about this topic, since no one asks their opinions about their school paths and their experiences at school. The realization of a video by the children about their rights, the rethinking of school use of recreation according to the perspective of the children, and consequent changes introduced in this space / time and children's considerations about the school, its dilemmas and have been opportunities for children to re-signify their social place.
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Gustavsson, Vilhelm. "Machine Learning for a Network-based Intrusion Detection System : An application using Zeek and the CICIDS2017 dataset." Thesis, KTH, Hälsoinformatik och logistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-253273.
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Cyber security is an emerging field in the IT-sector. As more devices are connected to the internet, the attack surface for hackers is steadily increasing. Network-based Intrusion Detection Systems (NIDS) can be used to detect malicious traffic in networks and Machine Learning is an up and coming approach for improving the detection rate. In this thesis the NIDS Zeek is used to extract features based on time and data size from network traffic. The features are then analyzed with Machine Learning in Scikit-Learn in order to detect malicious traffic. A 98.58% Bayesian detection rate was achieved for the CICIDS2017 which is about the same level as the results from previous works on CICIDS2017 (without Zeek). The best performing algorithms were K-Nearest Neighbors, Random Forest and Decision Tree.IT-säkerhet är ett växande fält inom IT-sektorn. I takt med att allt fler saker ansluts till internet, ökar även angreppsytan och risken för IT-attacker. Ett Nätverksbaserat Intrångsdetekteringssystem (NIDS) kan användas för att upptäcka skadlig trafik i nätverk och maskininlärning har blivit ett allt vanligare sätt att förbättra denna förmåga. I det här examensarbetet används ett NIDS som heter Zeek för att extrahera parametrar baserade på tid och datastorlek från nätverkstrafik. Dessa parametrar analyseras sedan med maskininlärning i Scikit-Learn för att upptäcka skadlig trafik. För datasetet CICIDS2017 uppnåddes en Bayesian detection rate på 98.58% vilket är på ungefär samma nivå som resultat från tidigare arbeten med CICIDS2017 (utan Zeek). Algoritmerna som gav bäst resultat var K-Nearest Neighbors, Random Forest och Decision Tree.
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Avena, Anna. "Tecniche di data mining applicate alla decodifica di dati neurali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14800/.
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Gli studi sulla decodifica dell'attività neuronale permettono di mappare gli impulsi elettrici della corteccia cerebrale in segnali da inviare a determinati dispositivi per poterli monitorare. È su questo tema che la ricerca scientifica si sta concentrando, al fine di aiutare le persone affette da gravi lesioni fisiche ad ottenere un maggiore grado di autonomia nelle piccole azioni di tutti i giorni.
In questo elaborato, sono stati analizzati dati derivanti da attività neuronali raccolti da esperimenti effettuati su primati non umani, eseguiti dal gruppo di ricerca della professoressa Patrizia Fattori nel Dipartimento di Farmacia e Biotecnologie dell'Università di Bologna.
Per lo svolgimento di questo esperimento, la cavia, è stata addestrata a svolgere un compito che consiste nell'afferrare gli oggetti proposti, uno alla volta, in ordine casuale. Durante l'esercizio, l'attività neuronale della cavia è stata registrata in vettori contenenti l'attività di spiking.
Ciò che si cerca di fare in questa tesi è ricostruire l'informazione relativa all'attività di una popolazione di neuroni, dato il suo spike vector.
Sono stati testati diversi algoritmi di classificazione e feature al fine di stabilire quale configurazione sia più affidabile per il riconoscimento dell'attività motoria svolta dalla cavia durante l'esperimento.
A tal proposito, è stato implementato un processo di data mining attraverso l'utilizzo del linguaggio python e del framework Scikit-learn che permette di effettuare più classificazioni e stabilire quale fornisce una migliore performance.
I risultati dell'analisi dimostrano che alcune feature forniscono alti tassi di riconoscimento e che, a seconda del dominio del problema, è più indicato un determinato tipo di preprocessing rispetto ad un altro.
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Gavardi, Laura [Verfasser], Johannes [Akademischer Betreuer] Albrecht, and Kevin [Gutachter] Kröninger. "Studies for the LHCb SciFi tracker : Investigation of SCSF-78 scintillating fibres performances and development of a novel class of highly efficient scintillating fibres / Laura Gavardi ; Gutachter: Kevin Kröninger ; Betreuer: Johannes Albrecht." Dortmund : Universitätsbibliothek Dortmund, 2017. http://d-nb.info/116044305X/34.
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Chan, Yue-Kong Kenneth. "Web services and agents integration /." View document on the Internet, 2006. http://library.athabascau.ca/drr/download.php?filename=scis/Yue-Kong(Kenneth)ChanEssay.pdf.
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Project (M.Sc)--Athabasca University, 2006."An essay submitted in partial fulfillment of the requirements for the degree of Master of science in information systems"--t.p. Includes bibliographical references (leaves 71-78).
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van, Hooijdonk Benedict Michael. "The physiological basis of vigour control by apple rootstocks - an unresolved paradigm : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Plant Physiology at Massey University, Palmerston North, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1137.
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For millennia, scions have been grafted onto dwarfing apple rootstocks to reduce final tree size. However, it is unclear how scion architecture is first modified by the dwarfing apple rootstock, the time from grafting when this occurs and the endogenous hormonal signalling mechanisms that may cause the initial modifications in growth that then define the future architecture of the scion. In this study, the dwarfing (M.9) rootstock significantly decreased the mean total shoot length and node number of ‘Royal Gala’ apple scions by the end of the first year of growth from grafting when compared with rootstock(s) of greater vigour (MM.106, M.793 and a ‘Royal Gala’ rootstock control). Similarly, the auxin transport inhibitor 1-N-naphthylphthalamic acid (NPA) applied to the stem of vigorous rootstocks significantly decreased mean total shoot length and node number of the scion, and the architectural changes imposed were generally similar to those imposed by M.9. For example, both treatments decreased the mean length and node number of the primary shoot, reduced the formation of secondary axes on the primary shoot and caused a greater proportion of primary and secondary shoots (if present) to terminate growth early. Decreased formation of secondary axes imposed by both treatments was reversed by applying the cytokinin benzylaminopurine (BAP) repeatedly to the scion, whilst applications of gibberellins (GA4+7) reduced the proportion of primary and secondary shoots that terminated growth early, therefore increasing the final mean length and node number of these shoot types. Both M.9 and NPA also significantly decreased the final mean dry mass and length of the root system. Given these general similarities, it is proposed that the basipetal IAA signal is of central importance in rootstock-induced scion dwarfing, and that a shoot/root/shoot signalling mechanism may exist whereby the stem tissue of the M.9 rootstock decreases the basipetal transport of IAA to the root during summer, thereby decreasing root growth and the amount of rootproduced cytokinin and gibberellin transported to scion. Reduced amounts of cytokinin transported to the scion may decrease branching, whilst reduced amounts of gibberellins may decrease the duration for which a large proportion of primary and secondary shoots grow. Analysis of endogenous hormones for newly grafted composite ‘Royal Gala’ apple trees on rootstocks of different vigour provided some additional support for these ideas. It is recommended that future studies elucidate what unique properties of the M.9 bark act to restrict IAA transport, whilst it is concluded that gene(s) regulating rootstock-induced scion dwarfing are likely to control processes within the rootstock that modify the metabolism of IAA, its basipetal transport and the subsequent synthesis of root-produced vigour-inducing hormones including cytokinins and gibberellins.
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Križan, Viliam. "Analýza sociálních sítí využitím metod rozpoznání vzoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220399.
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Diplomová práca sa zaoberá rozpoznávaním emócií z textu v sociálnych sieťach. Práca popisuje súčasné metódy extrakcie príznakov, používané lexikóny, korpusy a klasifikátory. Emócie boli rozpoznávané na základe klasifikátoru, netrénovaného na anotovaných dátach z mikroblogovacej siete Twitter. Výhodou použitia služby Twitter, bolo geografické vymedzenie dát, ktoré umožňuje sledovanie zmien emócií populácie v rôznych mestách. Prvým prístupom klasifikácie bolo vytvorenie Baseline algoritmu, ktorý používal jednoduchý lexikón. Pre zlepšenie klasifikácie sme v druhom bode použili komplexnejší SVM klasifikátor. SVM klasifikátory, extrakcie a selekcie príznakov boli použité z dostupnej Python knižnice Scikit. Dáta pre natrénovanie klasifikátoru boli zhromažďované z oblasti USA, a to s pomocou vytvorenej aplikácie. Klasifikátor bol natrénovaný na dátach, označených pri ich zhromažďovaní - bez manuálnej anotácie. Boli použité dve rôzne implantácie SVM klasifikátorov. Výsledné klasifikované emócie, v rôznych mestách a dňoch, boli zobrazené v podobe farebných značiek na mape.