• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1040
  • 382
  • 345
  • 249
  • 170
  • 80
  • 45
  • 28
  • 18
  • 17
  • 17
  • 17
  • 16
  • 10
  • 9
  • Tagged with
  • 2832
  • 415
  • 249
  • 244
  • 243
  • 227
  • 211
  • 196
  • 196
  • 186
  • 178
  • 175
  • 166
  • 161
  • 160
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
391

Derivation and Internal Validation of a Clinical Prediction Tool for Adult Emergency Department Syncope Patients

Kwong, Kenneth January 2016 (has links)
Syncope is a common Emergency Department (ED) presentation. An important proportion of syncope patients are at risk of developing serious adverse events (SAEs), such as deaths or arrhythmias following ED disposition. Currently, no clinically-useful decision tool exists to reliably identify high-risk patients. This study derived a clinical decision tool to identify syncope patients at risk of developing SAEs after ED disposition. This study also examined key methodological considerations involved in deriving decision tools by comparing two different methodological approaches: a traditional and modern approach. The traditional approach led to an eight-variable decision tool that allowed simple clinical interpretation and use. The modern approach, which aims to avoid data-driven methodology and statistical overfitting, was used to derive a ten-variable decision tool. Both decision tools displayed acceptable and comparable performance in internal validation studies (c-statistic 0.87, 95% confidence interval 0.84-0.89). A future external validation study is required to comprehensively compare the methods.
392

Zhodnocení nástrojů provozní analýzy jako podklad pro optimalizaci provozu / Evaluation of operating analysis tools as a base for traffic optimalization

Hrstka, Daniel January 2013 (has links)
Goal of the thesis is to explore, evaluate and, if it is possible, suggest new tools or improve the ones, being used at the moment, for operating analysis, which is used as one of the bases for traffic optimalization of public transport. One of the elements of the thesis is exploring standards of quality and finding out, if they standards are being met on the ground of collected data. At first i will describe and evaluate tools of operating analysis. After identifying possible shortcomings, i will create new outcomes or new tools, or just slightly correct the existing ones, if it is needed. Everything is created on a real data collected from traffic surveys from years 2008 and 2012 in specific cities. After that, i focus on standards of quality and if the standards are being met. For that I'm using graphs, written text and pictures for better understanding. Again everything is based on real data either from chosen transport companies or traffic surveys.
393

La traduction entre outil d'enseignement et discipline scientifique : le cas de l'espagnol au Gabon et en Guinée-Equatoriale / Translation, teaching tool or scientific discipline : example of the spanish language in Gabon and in Equatorial Guinea

Okome Engouang, Liliane-Surprise 03 June 2013 (has links)
La présente étude a consisté à traiter de différents points relatifs à la traductologie et à la traduction. Après avoir mis en exergue les différentes théories qui tentent de définir et de cerner l’acte de traduire, nous nous sommes interrogé sur la question de la traduction sous deux aspects. En classe de langue, elle constitue avant tout un outil didactique. Dans le cadre de formation spécialisée, la traduction constitue un vecteur de la communication intra et interculturelle. En outre, la question de la scientificité de la traductologie étant toujours d’actualité, nous nous sommes servis des données épistémologiques pour aborder ce point. De cette étude, il a été retenu que du fait de son interdisciplinarité, la traductologie s’occupe aussi bien de la traduction humaine que celle à la machine. De fait, la discipline transcende les sciences humaines pour se placer également au niveau des sciences formelles à travers les calculs statistiques qui s’inscrivent dans la programmation des logiciels. Après avoir étudié les programmes de formation en traduction de certains établissements des pays occidentaux, notre ambition a été ensuite de voir de quelle façon est envisagée sa pratique en milieux exolingue et dans les classes de langues universitaires du Gabon et de la Guinée-équatoriale. Pour ce faire, nous avons effectué une enquête de terrain qui nous a permis d’identifier certains manquements tels que la non spécialisation des enseignants (au Gabon) et l’inexistence de la formation (en Guinée-équatoriale). Les problèmes notés lors de l’enquête de terrain nous ont amenés à proposer quelques solutions. / This study consisted in treating various points concerning the Translations Studies and the translation. After having highlighted some teories which try to define and understand the translating process, we wondered about the matter of translation under two ways. In language classes, it is above at all teaching tool. In the specialized training context, the translation is an intra and intercommunication vehicle. In the addition, the matter of the scientific value of Translations studies is still valid, we used epistemological data to treat this point. From this analyze, it was retained that, because of this interdisciplinary, the Translations studies treats both of human translation than the machine. In fact, the discipline transcends the humanities to also place at the formal sciences through statistical calculations that fall within the program software. After reviewing the training programs translations of some western establishments, our goal was then to analyze how its practice is envisaged in the exolingual environment and in languages classes of university of Gabon and Equatorial Guinea. To do this, we did a field survey allowed us to identify certain breaches such as the lack of specialization of teachers (in Gabon) and the nonexistence of training (Equatorial Guinea). Problems noted during the field survey have led us to propose some solutions.
394

Software product line model for the meshing tool domain

Rossel Cid, Pedro Osvaldo January 2013 (has links)
Doctor en Ciencias, Mención Computación / Una malla es una discretización de la geometría de un cierto dominio. Las mallas pueden estar compuestas de diversos elementos: triángulos, cuadriláteros, tetraedros, etc. Una herramienta para la generación de mallas es un aplicación que permite crear, refinar, desrefinar, mejorar, suavizar, visualizar y posprocesar mallas y/o una región particular de ella, como también asignar valores físicos a los elementos de la malla (temperatura, concentración, etc.). Las herramientas para la generación de mallas son complejas y sofisticadas, y construir una herramienta nueva desde cero o mantener una existente, demanda un esfuerzo enorme. Existe una necesidad y oportunidad para usar enfoques nuevos en el desarrollo de estas herramientas, de manera de reducir tanto el tiempo como los costos de desarrollo, sin comprometer la calidad. La experiencia en el desarrollo de estas herramientas provee la motivación para la construcción de otras nuevas mediante la reutilización del trabajo realizado durante los desarrollos previos. Estas herramientas comparten varias características y sus variaciones pueden ser manejadas sistemáticamente. Esto hace que el desarrollo de estas herramientas sea una buena oportunidad para aplicar el enfoque de Línea de Productos de Software (LPS). Los procesos existentes de LPS son generales y requieren usualmente una serie de pasos y documentación innecesaria en el dominio de las herramientas para la generación de mallas. Así, esta tesis propone un modelo de proceso de LPS específico para este tipo de herramientas. Un proceso de desarrollo de LPS está centrado en la reutilización de software, e involucra principalmente dos fases: la ingeniería del dominio (ID) y la ingeniería de la aplicación (IA). El proceso presentado en este trabajo está centrado en dos etapas de la ID: el análisis del dominio (AD) y el diseño del dominio (DD). En el AD se define el modelo del dominio y el alcance de la LPS. En el DD la arquitectura de la línea de productos (ALP) es creada; esta arquitectura es válida y compartida por todos los productos en la LPS. Un modelo de características es comúnmente usado para modelar el dominio. En este trabajo, el AD también ocupa un diccionario, escenarios, acciones y metas para proveer el razonamiento utilizado para la construcción del modelo de características. Esta tesis presenta un proceso riguroso para obtener el modelo del dominio. Este modelo es formalizado mediante condiciones de consistencia y completitud. El proceso de definición del alcance es presentado a través de un diagrama de actividad. Además, el enfoque presentado en esta tesis presenta explícitamente los diferentes productos de la LPS, estableciendo relaciones entre productos y las características de la LPS, lo que permite administrar el desarrollo del producto. La etapa de DD se centra en la creación de la ALP, artefacto esencial para la construcción de productos de la LPS. Para ello, este trabajo provee un proceso deductivo y otro transformacional. En el primero, una ALP explícita es desarrollada, usando los artefactos producidos en el AD. Además, tanto la vista arquitectónica estructural como la de comportamiento son establecidas. Ambas vistas son generales y permiten la representación de cualquier producto dentro del alcance de la LPS. En el proceso transformacional, una ALP implícita es desarrollada usando reglas de transformación, las que han sido creadas usando artefactos producidos en el AD. En este proceso se produce la arquitectura para productos específicos, y la ALP es definida como la suma de todas las arquitecturas de los productos. Tanto el AD como el DD son descritos en detalle, y la aplicación del modelo de la LPS es ilustrado a través de un ejemplo bien documentado en el dominio de las herramientas para la generación de mallas, el que tiene un grado relativamente alto de complejidad. En este ejemplo, un modelo del dominio formalizado es introducido, y la arquitectura es definida tanto para el proceso deductivo como para el transformacional.
395

Comportements techniques au Magdalénien moyen ancien : Approche techno-fonctionnelle de l’industrie lithique de deux gisements du Centre Ouest de la France : la Marche (Vienne) et la Garenne (Indre) / Technical behaviour during the Early Middle Magdalenian. : Techno-functional approach of the lithic industry of two sites of West-central France : la Marche (Vienne) and la Garenne (Indre)

Gauvrit Roux, Eugénie 19 June 2019 (has links)
Le Centre-Ouest de la France est une région clef pour l’appréhension des variations culturelles du Magdalénien moyen ancien (19-17 500 cal. BP). Elle apparaît, à travers de riches productions artistiques (art pariétal et mobilier, parure) et osseuses (pointes de projectiles, navettes), comme un carrefour culturel. Deux faciès sont identifiés : le Magdalénien à pointe de Lussac-Angles et le Magdalénien à navettes. À travers l’étude des sites de la Marche (Lussac-Angles) et de la grotte Blanchard à la Garenne (navettes), nous avons cherché à restituer les comportements techniques liés à la production et à l’utilisation de l’outillage de ces deux grands faciès. À la suite d’une approche systémique combinant analyse technologique et fonctionnelle des productions lithiques, nous montrons qu’il existe un partage de fonds technique commun et une perméabilité entre ces faciès, à travers les modalités de production des lames et des lamelles, les relations entre forme et fonction et les stratégies de gestion de l’outillage (utilisations multiples, réutilisations, ravivages, raffûtages, multiplication des outils doubles). En revanche, des variations en termes de gestes voire de procédés techniques liés à l’utilisation des grattoirs et des lamelles à dos sont perceptibles. Ces éléments révèlent des spécificités propres aux comportements techniques sur chacun des sites. / West-central France is a key region to apprehend cultural variations of the Early Middle Magdalenian (19-17 500 cal. BP). This region appears to be at a cultural crossroad of several traditions visible through rich art (cave art, portable art, ornaments) and bone industry traditions (projectile points, navettes). Two facies are identified: the Lussac-Angles Magdalenian and the navettes Magdalenian. By focusing on the sites of la Marche (Lussac-Angles) and the Blanchard cave on the hillside of la Garenne (navettes), we seeked to approach technical behaviours related to use and production of the tools of these two facies. With a systemic approach that combines technological and functional analyses of lithic production, we show the existence of a shared technical background and a permeability between facies. This is evidenced through modalities of production of blades and bladelets, relations between form and function and tools management strategies (multiple uses, reuses, sharpenings, multiplication of double tools). On the other hand, variations in terms of gestures or technical processes related to the use of endscrapers and backed bladelets are perceptible. These elements reveal specificities of the technical behaviours on each site.
396

Software development from theory to practical machining techniques

Shahrezaei, Khashayar, Holmström, Pontus January 2020 (has links)
In already optimized processes it may be challenging to find room for further improvement. The solution can be found in the advanced software and tools that support the digital manufacturing, all the way from planning and design to in-machining and machining analysis. This project the- sis focuses on developing a process methodology to transcribe Sandvik Coromant’s theories and knowledge about machining operation grooving into machine-readable formats. Various software development models have been analysed and a particular model inspired by the incremental and iterative process model was developed to match the context of this project. This project thesis describes the working methodology for gathering theories and translating them into machine-interpretable format. A working methodology developed in this project thesis succeeded in transcribing different human- readable theories such as people’s minds (experts within the field) and handbooks into a machine- interpretable format. The proposed algorithms for tool path generation was developed and imple- mented successfully through the integration of mathematical modelling. MATLAB and Siemens NX has been used to build a proof of concept environment.
397

Using Delegation as a Teacher and as a Teaching Tool

Dwyer, Edward J. 01 January 1990 (has links)
No description available.
398

Generic Quality Assurance in Software Projects

Jansson, Daniel January 2021 (has links)
Keeping the code quality high and ensuring high security in a softwareproject is a common challenge. To address this challenge a system calledQuality Assurance System (QAS) has been implemented. QAS usesfour third-party testing tools to evaluate software projects in regards tocode quality and security, without adding more work for each separatesoftware project. QAS was tested on real world software projects andmultiple potential misconfigurations and errors was found. QAS can notreplace testing, but it is a starting point by adding some basic tests thatlooks for security vulnerabilities, misconfigurations, etc.
399

Analýza opotřebení VBD při soustružení hlavňových ocelí / Analysis of wear on cutting edges during turning of main steels

Balíček, Martin January 2018 (has links)
This diploma thesis deals with the choice of suitable VBD for longitudinal turning barrel steel OCHN3MFA. In the theoretical part, serving as a basis for the experimental part, the technology of turning, tooling and coating methods was analyzed. In the experimental part, ten VBDs were tested, eight of which were of cemented carbide and two of ceramic. The monitored parameters were force load and tool wear VB. From the evaluated load data and tool wear, a suitable VBD for turning barrel steel was selected. The most suitable VBD for turning barrel steel is VBD – G. Tools VBD – I and VBD – J from ceramics are inappropriate tools for turning barrel steel.
400

Výroba víčka / Production of cap

Braško, Zdenko January 2018 (has links)
The aim of this thesis is to propose and design the production of the cap. The cap is welded to the tube of roller regal and is used for closing the tube. They together make a fixed assembly. There is a bearing molded from inside the cap and shaft passes through the center of the cap. The main function of whole assembly is to rotate the tube around its own axis. The cap will made from deep - drawing steel DC04 with a thickness of 2 mm. After consideration various possible variants for the cap production, there was chosen deep drawing without reduction of thickness as the most profitable technology. The shape of the component was modified from the technology review. There is proposed a tool that will be used for production the caps. The caps will be produced within three operations: the first two operations form a central cup and the third operation makes the final shape of the cap. Drawings for the tool are created and delivered as part of this thesis. Based on the necessary force and work calculation, it was chosen eccentric press machine S 160 E from the ŠMERAL company. With the 25 000 series, the costs of production one piece are 51,65 CZK.

Page generated in 0.032 seconds