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  • 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.
321

Caracterização de genótipos de feijão-lima (Phaseolus lunatus L.) na região de Pelotas - Rio Grande do Sul / Characterization of genotypes of lima bean (Phaseolus lunatus L.) in the region of Pelotas - rio Grande do Sul

Cavalheiro, Violeta Bacchieri Duarte 30 July 2012 (has links)
Made available in DSpace on 2014-08-20T13:44:26Z (GMT). No. of bitstreams: 1 dissertacao_violeta_bacchieri_duarte_cavalheiro.pdf: 979769 bytes, checksum: b002c4cbd652403f8347ccf6b8db38e6 (MD5) Previous issue date: 2012-07-30 / The objective of this study was to characterize seeds, seedlings and plants of twenty seven genotypes of lima beans, about morphologic aspects and eight of these as well as agronomic aspects, in the region of Pelotas, Rio Grande do Sul. For the morphological characterization was used as the reference the document "Descriptors for Phaseolus lunatus L.", published by the International Plant Genetic Resources Institute (IPGRI). For the agronomic characterization, trials were implemented in the years 2010 and 2011 at experimental area of Embrapa Clima Temperado Estação Terras Baixas. Eight genotypes were evaluated with respect to the cycle, growth pattern, leaf area index and weight of leaves and branches. It was found that the genotypes of lima bean have wide variation with respect to morphology, mainly as regards the characteristics of the seed and seedling. With respect to agronomic traits, it was observed that the genotypes have indeterminate growth pattern, non uniform flowering and maturation, and initiation of reproductive stages from 65 to 140 days after sowing. The genotype G7 differed in the morphological and agronomic characters notable for its greater potential for seed production. The genotype G8 was highlighted by blooming later and high vigor, with higher leaf area index and weight of leaves than the others, with greater potential for soil covering. / O objetivo deste trabalho foi caracterizar sementes, plântulas e plantas de vinte e sete genótipos de feijão-lima, quanto a aspectos morfológicos e oito destes, também quanto a aspectos agronômicos, na região de Pelotas, Rio Grande do Sul. Para a caracterização morfológica foi utilizado como referência o documento Descritores para Phaseolus lunatus L. , publicado pelo Centro Internacional para os Recursos Genéticos Vegetais (IPGRI). Para caracterização agronômica foram implantados ensaios nos anos de 2010 e 2011 na área experimental da Embrapa Clima Temperado Estação Terras Baixas. Oito genótipos foram avaliados com relação ao ciclo, padrão de crescimento, índice de área foliar e fitomassa de folhas e ramos. Foi verificado que os genótipos de feijão-lima possuem ampla variabilidade com relação à características morfológicas, pincipalmente no que diz respeito à características de semente e plântula. Com relação às características agronômicas foi observado que os genótipos possuem padrão de crescimento indeterminado, floração e maturação desuniformes e início do estádio reprodutivo de 65 a 140 dias após a semeadura. O genótipo G7 diferenciou-se dos demais nos caracteres morfológicos e agronômicos, destacando-se pelo maior potencial para produção de sementes. O genótipo G8 se destacou pela floração mais tardia e alto vigor, apresentando maior índice de área foliar e fitomassa que os demais e possuindo maior potencial para cobertura de solo.
322

A smoothed particle hydrodynamic simulation utilizing the parallel processing capabilites of the GPUs

Lundqvist, Viktor January 2009 (has links)
Simulating fluid behavior has proven to be a demanding challenge which requires complex computational models and highly efficient data structures. Smoothed Particle Hydrodynamics (SPH) is a particle based computational model used to simulate fluid behavior that has been found capable of producing convincing results. However, the SPH algorithm is computational heavy which makes it cumbersome to work with. This master thesis describes how the SPH algorithm can be accelerated by utilizing the GPU’s computational resources. It describes a model for how to distribute the work load on the GPU and presents a suitable data structure. In addition, it proposes a method to represent and handle moving objects in the fluids surroundings. Finally, the performance gain due to the GPU is evaluated by comparing processing times with an identical implementation running solely on the CPU.
323

Purposeful Action : organizational practices that contribute to a culture of strategic decision making for sustainability

Craig, Alexander, Macura, Katja, Pucci, Giancarlo January 2012 (has links)
Current methods for reaching and defining success in society are not sustainable. A major shift in society’s definition of economic success is required, and organizations represent a key leverage point in the transition to a sustainable economy. This research looks to practices within organizations with a sustainability purpose in an attempt to understand how their organizational culture creates an environment for continual strategic decision making towards sustainability. A combination of literature review and structured interviews were used to elicit the cultural practices of 18 organizations with a clear social and ecological sustainability purpose. The research confirmed the importance of organizational culture for maintaining alignment with a sustainability purpose by fostering motivation and commitment towards sustainability at both a collective and individual level in the organization. Eight overarching areas of practice were identified as being present in the organizations included in the study. The practices identified help organizations to act strategically and in the right direction towards sustainability on a daily basis, standing as a complement to the strategic prioritization model of the FSSD. / <p>giancarlo@pucci.cr</p>
324

Problematik der Einzweckmaschinen mit elektronischen Kurvenscheiben

Fišer, Pavel, Jirásko, Petr, Václavík, Miroslav 17 May 2018 (has links) (PDF)
Die Firma VÚTS, a.s., beschäftigt sich mit der Konstruktion und Herstellung von speziellen Einzweckmaschinen, die sie mit ihren entwickelten die Umsetzung der zuständigen Technologie ermöglichenden Steuerungssystemen bestückt. Die Abteilung für Mechatronik führt mehr als 10 Jahre die Anwendungsforschung von elektronischen Kurvenscheiben basierend auf HW und SW-Komponenten von Yaskawa (Japan) / 2 / durch. Da die Anwendung von elektronischen Kurvenscheiben mit den eigenen Steuersystemen zusammenhängt, wurde ein allgemeines Steuersystem entwickelt, das auf dem Konzept einer Zustandsmaschine mit manueller und automatischer Betriebsart basiert. Dieses Konzept ist im Bereich der Steuersysteme für Werkzeugmaschinen üblich. Der grundlegende Unterschied liegt jedoch in der automatischen Betriebsart, bei der die Programmlogik der elektronischen Kurvenscheiben zum Steuern einzelner NC-Achsen verwendet wird. Die Bewegung der Arbeitsglieder bzw. einzelner Achsen wird von den Bewegungsgesetzen abgeleitet, einschließlich der ersten und der zweiten Ableitungen, die in den Vorwärtskopplungen der Geschwindigkeit und des Momentes der Kaskadenregelstruktur in dem Servo-Wandler verwendet sind. Das Konzept des Steuersystems mit elektronischen Kurvenscheiben wurde für eine Anzahl von Einzweckmaschinen verwendet, von denen zwei Vertreter erwähnt werden. [... aus der Einleitung]
325

Multi-Resolution Modeling of Managed Lanes with Consideration of Autonomous/Connected Vehicles

Fakharian Qom, Somaye 29 June 2016 (has links)
Advanced modeling tools and methods are essential components for the analyses of congested conditions and advanced Intelligent Transportation Systems (ITS) strategies such as Managed Lanes (ML). A number of tools with different analysis resolution levels have been used to assess these strategies. These tools can be classified as sketch planning, macroscopic simulation, mesoscopic simulation, microscopic simulation, static traffic assignment, and dynamic traffic assignment tools. Due to the complexity of the managed lane modeling process, this dissertation investigated a Multi-Resolution Modeling (MRM) approach that combines a number of these tools for more efficient and accurate assessment of ML deployments. This study clearly demonstrated the differences in the accuracy of the results produced by the traffic flow models incorporated into different tools when compared with real-world measurements. This difference in the accuracy highlighted the importance of the selection of the appropriate analysis levels and tools that can better estimate ML and General Purpose Lanes (GPL) performance. The results also showed the importance of calibrating traffic flow model parameters, demand matrices, and assignment parameters based on real-world measurements to ensure accurate forecasts of real-world traffic conditions. In addition, the results indicated that the real-world utilization of ML by travelers can be best predicated with the use of dynamic traffic assignment modeling that incorporates travel time, toll, and travel time reliability of alternative paths in the assignment objective function. The replication of the specific dynamic pricing algorithm used in the real-world in the modeling process was also found to provide the better forecast of ML utilization. With regards to Connected Vehicle (CV) operations on ML, this study demonstrated the benefits of using results from tools with different modeling resolution to support each other’s analyses. In general, the results showed that providing toll incentives for Cooperative Adaptive Cruise Control (CACC)-equipped vehicles to use ML is not beneficial at lower market penetrations of CACC due to the small increase in capacity with these market penetrations. However, such incentives were found to be beneficial at higher market penetrations, particularly with higher demand levels.
326

Evaluation environnementale des besoins de mobilité des grandes aires urbaines en France - Approche par Analyse de Cycle de Vie / Environmental assessment of urban area trip purposes in France with Life Cycle Analysis

Le Feon, Samuel 17 January 2014 (has links)
Les déplacements de personnes et de marchandises sont responsables d’une part importante des impacts environnementaux à l’échelle de la ville. Cette thèse part des hypothèses que, les impacts environnementaux des phases situées en amont ou en aval de la phase d’usage ne sont pas négligeables et que l’étude différenciée des besoins de mobilité peut apporter un éclairage nouveau aux méthodes traditionnelles d’évaluation. La façon de répondre à chaque besoin induit, a priori, des impacts environnementaux différents. Ces derniers sont calculés à l’aide de la méthode d’Analyse de Cycle de Vie. La méthodologie a été développée sur un cas d’application : les émissions de GES de l’Agglomération de Saint-Etienne afin de se confronter à la réalité du terrain et de se procurer des données spécifiques. Ce cas d’application a donné une première série de résultats, confirmant à la fois la part non négligeable d’impacts hors phase d’usage et la disparité des émissions pour une personne.kilomètre selon le besoin de déplacement. Ensuite, une proposition de typologies urbaines a été faite en réalisant une Analyse en Composantes Principales, couplée à une Classification Ascendante Hiérarchique, sur les grandes aires urbaines de France, sur des variables influentes pour la mobilité. Trois classes d’aires urbaines ont été étudiées. La méthodologie a été appliquée aux données des Enquêtes Ménages Déplacements de Bordeaux, Toulon et Valenciennes. Des disparités sont observées pour certains motifs et il est possible de calculer des marges de progression pour chaque agglomération. Enfin, l’utilisation de l’ACV, multicritère a également révélé la nécessité de travailler avec plusieurs indicateurs. / Transportation of goods and people is known as a key environmental impact contributor in a city. However, traditional impact assessment methodologies don’t consider environmental issues all over the life cycle. The cause of a trip is also rarely taken into account in an environmental assessment. This thesis aims at proposing a new impact assessment methodology that considers the influence of indirect emissions (using Life Cycle Assessment (LCA) methodology) and causes of trips on the environmental footprint. Two main hypotheses are settled at the beginning: the environmental impacts of mobility do not only occur during the use phase (the trip by itself) but all over its life cycle. Also the trip purposes may change the choice of way to travel and consequently affect environmental impacts. The global Functional Unit (FU) is “transport people and good in a French urban area during a year” and is divided in intermediate FU referring to each trip purposes, such as “allow commuter trips in a French urban area during a year”. The methodology was developed, tested and validated through a real case: the agglomeration of Saint-Etienne (France). During this phase, mobility territorial actors were met and real data provided that allows facing methodology to possible field limitations. This application case shows first results. First, it confirms importance to consider impacts all over the life cycle (17% of GHG emissions occur out of the use phase). Second, it shows significant differences of emissions by person.kilometer between trip purposes categories. Then a typology of urban area was proposed based on literature about travel determinants. Principal Component Analysis used on French big urban areas (more than 250 000 inhabitants) identified 5 classes. The methodology was applied to three of them (Bordeaux, Toulon and Valenciennes) using data from a standardized survey on households and mobility in order to compare them. It shows disparities on global results partly due to total annual travel distances. The trip purposes differentiation also shows important differences between urban areas. For each cause trip category and emission reduction potentials were calculated for each urban area by extrapolating differences for a pkm to the total annual distance for the trip. This can provide helpful information to deciders. Finally, the need to provide a multicriteria evaluation that is provided by LCA was committed. However methodological improvement would be necessary to better reflect local and regional impacts in LCA.
327

Inkomstbeskattning av stiftelser som bedriver allmännyttig verksamhet i fastigheter / Income taxation of foundations that conduct nonprofit activities in real estate

Kullenberg, Felicia January 2021 (has links)
Det vanligaste sättet att organisera filantropisk verksamhet i Sverige är genom stiftelser. Enligt stiftelselagen räknas stiftelser som juridiska personer, och är därför generellt sett skyldiga att betala inkomstskatt. De kan dock på olika sätt bliskattebefriade om de bedriver en verksamhet som främjar ett kvalificerat allmännyttigt ändamål. Just stiftelsers ändamål är därför intressant ur skatterättslig synpunkt.  Syftet med studien är att beskriva och fastställa gällande rätt i 7 kap. IL avseende hur stiftelser som främjar det allmännyttiga ändamålet Omsorg om barn och ungdom ska inkomstbeskattas, samt vilka rekvisit som ska vara uppfyllda för att ändamålet ska anses främjat. Därtill följer att redogöra för hur stiftelser som bedriver sådan allmännyttig verksamhet i specifikt fastigheter i enlighet med 7 kap. 21 § IL ska inkomstbeskattas på den inkomst som följer av verksamheten i fastigheten, och därmed även fastställa vilken skatte- och avgiftsplikt som gäller för fastigheten enligt 3 kap. 4 § FTL. Studien har genomförts med hjälp av en rättsdogmatisk metod vilket traditionellt sett betyder att man fastställer gällande rätt. De allmänt accepterade rättskällorna har studerats i enlighet med rättskälleläran. Kravet för att det allmännyttiga ändamålet ska vara uppfyllt är att det måste handla om specifikt omsorg, och inte endast någon typ av barn- och ungdomsverksamhet.Stiftelser som inom ramarna för ändamålskravet främjar det kvalificerade allmännyttiga ändamålet omsorg om barn och ungdom, och även uppfyller kraven i verksamhetskravet och fullföljdskravet enligt 7 kap. 4-6 §§ IL, kan om de till övervägande del använder en viss fastighet i verksamheten bli undantagna från skatte- och avgiftsplikt på fastigheten i form av vanlig fastighetstaxering enligt 3 kap. 4 § FTL, och därmed även bli undantagna från skattskyldighet på den inkomst som kommer från fastigheten enligt 7 kap. 21 § IL.
328

Konstrukce jednoúčelového montážního zařízení pro automobilní průmysl / Design of single purpose assembly device for automotive industry

Denk, Marek January 2020 (has links)
The subject of this master’s thesis is a design of a single-purpose assembly machine for automotive industry. The assembled component is a part of a headlight of a passenger car consisting of a heatsink, a PCB and a reflector which are mutually connected by screws. The result of the thesis is detailed 3D model of the single-purpose machine made in Creo Parametric software and drawing documentation of the designed machine.
329

Návrh konstrukce jednoúčelového manipulátoru pro automatickou výměnu nástrojů s třívačkovým generátorem pracovního cyklu / Design of dedicated manipulator for automatic tool change with the three cam generator duty cycle

Bláha, Pavel January 2021 (has links)
This thesis deals with the design of a single-purpose manipulator for automatic tool changing with a three-cams generator of the working cycle. At the beginning of the paper, general background information about tool trays and manipulators for the change of tools is briefly described. The scheme of the kinematic manipulator is proposed in this work as well. The thesis also includes the calculation of the shapes of the grooves in the cams. The result of this work is the design of the manipulator, including an animation of tool changing.
330

Stroj na obrábění zkušebních tělísek / Test Specimens Machine Tool

Dekař, Roman January 2008 (has links)
Diploma work deals with the proposal of single purpose maschine for the maschining of test dumb bells of polymer composite material filled with glass fibre. The purpose of this maschine is to process the test parts with dimensions of 3x5 mm up to 4x8 mm. The maschined part can have a profile with a maximum cross section 20 mm, or 20x20 mm. Based on the given parametres I prepared the proposal of the engineering process the overall set up including the drive force, its own feeding of the object, cooling and waste removal.

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