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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.
31

Conformação de pó de aço inoxidável através do processo de injeção à baixa pressão / The low pressure injection molding of stainless steel metallic powder

Rogério Akihide Ikegami 15 September 2000 (has links)
Metalurgia do pó é o uso de metais na forma de pó para a manufatura de produtos. Pós metálicos são combinados (misturados) e compactados em um molde. O material compactado recebe um tratamento térmico ou é sinterizado em um ambiente controlado para a união das partículas para formar um produto denso e resistente. Injeção de pós metálicos tem se destacado mundialmente na produção de componentes de pequenas dimensões e formas complexas em substituição a fundição sob pressão e a sinterização convencional. Atualmente a injeção de pós metálicos está se tornando uma opção competitiva relativamente à peças fundidas, forjadas, usinadas e estampadas. O presente trabalho revisa as técnicas de injeção de pós metálicos e aplica o processo de injeção à baixa pressão utilizando pó de aço inoxidável 316L com granulometria fina (15 &#956m). Os produtos injetados, uma vez extraídos o VO e sinterizados, foram submetidos à ensaios de tração, dureza e micrográficos. Os resultados obtidos são apresentados e discutidos. O trabalho, para a sua viabilização, incluiu a reforma de uma injetora de bancada à baixa pressão e a construção de moldes de injeção. / Powder metallurgy is the use of metals in the powder form for the manufacture of products. Metallic powders are combined (mixed) and compacted in a die. The compacted material receives a thermal treatment or it is sintered in an controlled atmosphere for the particle binding to form a dense and resistant product. lnjection of metallic powders has if globally highlighted in the production of components of small dimensions and complex forms in substitution the pressure casting and the conventional sintering. Nowadays the injection of metallic powders is becoming relatively a competitive option than casting, forging, machining and stamping. The present work revises the techniques of injection of metallic powders and it applies the injection process to the low pressure using powder of stainless steel 316L with fine granulation (15 &#956m). The injected products, once debinded and sintered, were submitted to tensile test, hardness and micrography. The results are presented and discussed. In this work, included the reform of a low pressure injection machine and construction of injection dies.
32

Support for Information Management in Virtual Organizations

Kalyan, Kosuri Naga Krishna, Yadav, B.B.Pavan Kumar January 2006 (has links)
Globalization and innovation are revolutionizing the higher education forcing to create new market trends.Different nations have their own pattern and framework of education in delivering the educational services.Educational institutions are also seeking different organizational and behavioural changes for their better future as they hunt for new financial resources, face new competition and seek greater prestige domestically and internationally. The coming future will decide which universities would survive the market trends, competition and expectations of the students (Clients). The survival-of-the-fittest paradigm framework plays a prominent role in ideas of how the higher education would be delivered to the students in future with the Instruction Technology and distance education. According to us the education trend has changed its phase of delivery of services form the management point of view to student’s point of view.Leading to delivery of educational service’s which would have more impact on student’s education, knowledge and experience within the institution. In our thesis we try to provide some information about how to support and manage the information in Virtual Organizations. We also explore the frameworks of the university and discussed a case study about the different ways of providing better support for information management resulting in delivery of best students driven services and unique facilities. We would be looking at the different aspects of the university work flows and procedures and gain an insight on the student’s expectation from the organization. This investigation would be helpful for the students to know what are the services they should expect from the universities and also helpful for management to know better the needs of the students and their needs and to develop a framework for proper execution of these services. / In an educational environment students should be the first priority. Trusting students is we feel the most important aspect of an educational institution also providing the best possible support to students.after being through the total framework of an organization and different Non- Functional requirements, we conclude that the primary task for better information management and service delivery in any organization is to get the better understanding of the requirements engineering. An organization should have clearly defined stakeholders who would be qualified and filled with commitment to manage their responsibilities with higher priority; also they have to take up the responsibilities for the students.So to achieve a balance among stakeholders there should be a proper negotiation and communication between the stakeholders. In order to achieve that there should be common set of defined rules (say services) through which they could correspond with each other. The stakeholder should be well equipped with the technical nature used to develop and maintain the system.In short the management is the key player in understanding and validating the system and determine whether or not the existing system/process is in control. The most powerful designs are always the result of a continuous process of simplification and refinement. The system could be validated by taking regular feedback from students by handing out a paper for evaluation at various occasions of the different courses. An online, end-of-course plus the experiences of students questions should be designed and should be made a part of students work to fill it in order to get their right perception on the system. These feedbacks could lead to proper student dialogue evaluation. Therefore, eventually controlling and smoothly managing the stakeholders and the services could provide efficient support for the information management in virtual organizations.BTH has the staffs who are concerned about student problems but there is no person responsible for the students whom the students could approach. So BTH should have defined stakeholders who are responsible for the students and to whom the students could approach with their difficulties and problems. The university should show the students that they care for them, this is only possible by the university to go an extra mile for the sake of students and providing better facilities and future prospects for the students. / Kosuri Naga Krishna Kalyan C/O Achanta Srinivas Kungsmarksvagen 69-1412 Karlskrona 37144 Sweden Phone::0046-0704521463 B.B.Pavan Kumar Yadav C/O Achanta Srinivas Kungsmarksvagen 69-1412 Karlskrona 37144 Sweden Phone:0046-0737726964
33

中国語複合語における日本語借用語からの語構成上の影響

李, 瑶 23 March 2021 (has links)
京都大学 / 新制・課程博士 / 博士(人間・環境学) / 甲第23260号 / 人博第975号 / 新制||人||230(附属図書館) / 2020||人博||975(吉田南総合図書館) / 京都大学大学院人間・環境学研究科共生文明学専攻 / (主査)准教授 松江 崇, 教授 道坂 昭廣, 教授 佐野 宏 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DGAM
34

Vliv havárie ve Fukušimě na francouzskou energetickou politiku / The Impact of Fukushima Accident on Energy Policy in France

Slepčan, Matej January 2016 (has links)
This master thesis examines how the Fukushima accident has affected the French energy policy and the impact on the perception of nuclear energy by policymakers, the public and energy companies. Nuclear energy does comprises three-quarters of the total electricity production in the country and thus forms the backbone of the energy mix in France. The study uses comparative analysis as a main approach, to compare public discourse of state actors (in particular the President, the Ministry of Energy and Nuclear Safety Agency) and the French energy companies before and after the accident from March 11, 2011. At the beginning, the study refers on the position of nuclear energy in the world, historical development of nuclear energy in France and its importance for the energy security of the country. It also describes the Fukushima accident and its immediate consequences on nuclear energy worldwide. In a research section it presents a summary of France's energy policy before the Fukushima accident, in which emphasis was placed on maintaining a high share of nuclear energy in the energy mix of the country. In the next part of the research is described the French energy policy after the accident and subsequently the prospect of possible change of energy strategy of France.
35

Through the Blur with Deep Learning : A Comparative Study Assessing Robustness in Visual Odometry Techniques

Berglund, Alexander January 2023 (has links)
In this thesis, the robustness of deep learning techniques in the field of visual odometry is investigated, with a specific focus on the impact of motion blur. A comparative study is conducted, evaluating the performance of state-of-the-art deep convolutional neural network methods, namely DF-VO and DytanVO, against ORB-SLAM3, a well-established non-deep-learning technique for visual simultaneous localization and mapping. The objective is to quantitatively assess the performance of these models as a function of motion blur. The evaluation is carried out on a custom synthetic dataset, which simulates a camera navigating through a forest environment. The dataset includes trajectories with varying degrees of motion blur, caused by camera translation, and optionally, pitch and yaw rotational noise. The results demonstrate that deep learning-based methods maintained robust performance despite the challenging conditions presented in the test data, while excessive blur lead to tracking failures in the geometric model. This suggests that the ability of deep neural network architectures to automatically learn hierarchical feature representations and capture complex, abstract features may enhance the robustness of deep learning-based visual odometry techniques in challenging conditions, compared to their geometric counterparts.
36

Berücksichtigung der ausländischen Eingriffsnormen im Art. 9 Rom I-VO

Mühlbauer, Kristina 29 June 2021 (has links)
Die Arbeit setzt sich mit dem neuen europäischen Anknüpfungskonzept für ausländisches Eingriffsrecht in der Rom I-VO auseinander. Im Fokus der Untersuchung steht die politisch motivierte und restriktiv ausgefallene Regelung des Art. 9 Abs. 3 Rom I-VO. Zudem widmet sich ein Teil der Untersuchung allgemein der hinter dem Eingriffsrecht – insbesondere dem Konzept des ausländischen Eingriffsrechts im IPR – stehenden Dogmatik, die aus einer dogmatisch-historischen Perspektive beleuchtet wird. Schwerpunktmäßig gilt es der Frage nachzugehen, welche Überlegungen hinter der neuen Kollisionsnorm stehen und ob die Sonderanknüpfung des Art. 9 Abs. 3 Rom I-VO einen dogmatisch geeigneten, mit der Zielsetzung der Rom I-VO vereinbaren rechtlichen Rahmen für die einheitliche kollisionsrechtliche Berufung der berücksichtigungswürdigen ausländischen Eingriffsnormen in den Mitgliedstaaten schafft. / The thesis examines the European concept of the newly defined connecting factor for foreign overriding mandatory rules in the Rome I Regulation. The central attention of the study is the analysis of the politically motivated and restrictive regulation of Art. 9 (3) of the Rome I Regulation. In addition, the first part of the study is dedicated to the examination of the general approach behind the application of foreign overriding mandatory rules in private international law from a dogmatic-historical perspective. The main focus of the thesis, however, is on the research of the considerations behind the new conflict of laws rule. The author specifically questions whether the new connecting factor defined in the Art. 9 (3) Rome I Regulation provides a worthy and sufficient legal framework for the application of foreign overriding mandatory rules.
37

Přetěžování dítěte volnočasovými aktivitami / Overloading the child's leisure activities

Boháčiková, Dominika January 2014 (has links)
Anotation: This thesis deals with leisure activities of children of preschool age and children of school age and it is trying to discover their favorite activities and interests, regularly visited leisure and quantity of it. The theoretical part deals with terms as free time, family, child of preschool age and child of school age, education in free time. It also deals with overloaded children and with problems associated with overloading. The aim of this thesis is the evaluation and analysis how children of preschool age and children of school age spending their free time. Through research questions we were trying to find out how children spend their free time and how many aktivities do they have in their free time. The empirical part contains the analysis of used methods , research investigation in the kindergarten and primary school in Martin. It also includes treatment of results - Its processed in tables, graphs and written comments.
38

Influência do treinamento muscular inspiratório sobre a função respiratória e qualidade de vida de pacientes com doença renal crônica em hemodiálisee a relação com a composição corporal e com a capacidade aeróbia

Soares, Viviane 30 June 2014 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-27T14:59:14Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Tese - Viviane Soares - 2014.pdf: 1975633 bytes, checksum: e3190782e47ad3342d7bdc080356bd0f (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-01-28T13:30:31Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Tese - Viviane Soares - 2014.pdf: 1975633 bytes, checksum: e3190782e47ad3342d7bdc080356bd0f (MD5) / Made available in DSpace on 2015-01-28T13:30:31Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Tese - Viviane Soares - 2014.pdf: 1975633 bytes, checksum: e3190782e47ad3342d7bdc080356bd0f (MD5) Previous issue date: 2014-06-30 / Chronic kidney disease (CKD) and its treatment, hemodialysis, favors the increase of comorbidities to patients and the protein-energy malnutrition is the main complication, with consequent wasting of muscle tissue that reduce muscle strength, lung function and oxygenation of body tissues resulting in poor functional capacity, cardiorespiratory fitness and quality of life of these patients. Therefore, the objective of this study was to compare body composition between hemodialysis patients and healthy subjects, to evaluate cardiorespiratory fitness by oxygen uptake ( peak VO2  ) and the effects of inspiratory muscle training (IMT) on respiratory function and quality of life of male patients on hemodialysis. A clinical trial was conducted with 62 patients, aged 22-71 years. Body composition was estimated by vectorial bioelectrical impedance and anthropometric measures. Respiratory muscle strength was assessed by manometer to obtain the maximal inspiratory (Pimax) and expiratory pressures (Pemax). Pulmonary function and classification of respiratory disorders were examined by spirometry. Cardiorespiratory fitness was assessed by cardiopulmonary exercise test performed on a treadmill using the Bruce protocol which was adapted to estimate peak oxygen uptake ( peak OV 2  ). The aspects of quality of life were assessed by questionnaire KDQOL - SF (Kidney Disease Quality of Life - Short Form). The IMT was held for six months during the sessions and always at the first two hours of hemodialysis. Two training devices were used: a specific trainer and a respiratory incentive associated with two breathing exercises. The respiratory function of patients was evaluated before, during and after the inspiratory muscle training. The results were presented in three studies. In the first study, the comparison of body composition between hemodialysis patients and healthy subjects indicated differences for triceps skin fold (p<0.001) and arm circumference (p<0.001), but not for arm muscle circumference and area. The vectorial bioelectrical impedance indicated patients in dehydration and reduced body cell mass when compared with healthy subjects. In the second study was analyzed the usefulness of respiratory parameters to detect patients with poor functional capacity ( peak OV 2  below 70 % of predicted). The Pimax (β=-0.037, p=0.014) and percentage of predicted forced vital capacity - FVC % (β=-0.056, p=0.025) were significant to identify patients with poor functional capacity predictors and the ROC curve established cutoff points for MIP (<74 cmH2O) and % FVC (<79%). In the third study were verified the effects of IMT on respiratory muscle strength, lung function and quality of life of hemodialysis patients. After training muscle strength was found significant increase in respiratory strength in both groups. The group that used incentive spirometry had greater increment to inspiratory strength (39.80%) than the group that used the specific trainer (28.30%). The aspects related to quality of life, found significant differences for the dimensions cognitive function (p=0.03), sexual function (p=0.009) and social function (p=0.04) in the group that trained with specific trainer, and to physical function (p=0.03) in the group that trained with incentive spirometry. The results of this study show that male patients in hemodialysis exhibit differences in body composition when compared with healthy subjects; inspiratory muscle strength and percent of vital capacity predicted for age can be used as predictors of poor functional capacity in this group of patients; and finally, inspiratory muscle training improved inspiratory muscle strength and aspects related to the quality of life of the two trained groups. / A doença renal crônica (DRC) e o seu tratamento, hemodiálise, estão associados com o surgimento de comorbidades, tais como, alterações hormonais, aumento da resposta inflamatória, as doenças cardiovasculares e a desnutrição energético-protéica, com consequente perda de tecido muscular. Essa perda reduz a força muscular respiratória e a função pulmonar e culmina na reduzida capacidade funcional, aptidão cardiorrespiratória e qualidade de vida destes pacientes. Considerando o exposto acima, o objetivo deste estudo foi avaliar a composição corporal, a capacidade aeróbia e os efeitos do treinamento muscular inspiratório (TMI) sobre a função respiratória e a qualidade de vida de pacientes do sexo masculino, submetidos à hemodiálise. Foi realizado um ensaio clínico com 62 pacientes, com idade entre 22-71 anos. A composição corporal foi estimada pelas medidas antropométricas e bioimpedância vetorial. A força muscular respiratória foi avaliada a partir da manovacuometria para obtenção das pressões inspiratória (Pimax) e expiratória máximas (Pemax). A função pulmonar e a classificação dos distúrbios ventilatórios foram examinadas pela espirometria. A aptidão cardiorrespiratória foi avaliada pelo teste de esforço cardiopulmonar, realizado em esteira e com a utilização do protocolo de Bruce que foi adaptado para estimar o consumo de oxigênio de pico ( pico OV 2  ). Os aspectos relacionados à qualidade de vida foram avaliados pelo questionário KDQOL-SF (Kidney Disease Quality of life – Short Form). O treinamento inspiratório foi realizado por seis meses durante as sessões e sempre nas primeiras duas horas da hemodiálise. Dois dispositivos de treinamento foram utilizados: um treinador específico e um incentivador respiratório associado a dois exercícios respiratórios. Os pacientes foram examinados quanto à função respiratória antes, durante e após o treinamento muscular inspiratório. Os resultados foram apresentados em três estudos. No primeiro estudo a comparação da composição corporal de pacientes em hemodiálise com a de sujeitos saudáveis indicaram diferenças para dobra cutânea tricipital (p<0,001) e circunferência de braço (p<0,001), mas, nenhuma para circunferência e área muscular de braço. A análise da bioimpedância vetorial indicou pacientes em estado de desidratação e redução de massa celular. No segundo estudo foi analisada a utilidade de parâmetros respiratórios para detectar pacientes com pobre capacidade funcional ( pico OV 2  abaixo de 70% do predito). A Pimax (β=-0,037; p=0,014) e a porcentagem predita da capacidade vital forçada - %CVF (β=-0,056; p=0,025) foram considerados preditores significativos para identificar os pacientes com pobre capacidade funcional e a curva ROC estabeleceu os pontos de corte para Pimax (<74 cmH2O) e %CVF (<79%). No terceiro estudo foram verificados os efeitos do TMI sobre função respiratória e a qualidade de vida dos pacientes em hemodiálise. Após o treinamento a força inspiratória aumentou, significativamente, nos dois grupos. O grupo que usou o incentivador respiratório teve maior incremento de força inspiratória (39,80%) que o grupo que utilizou o treinador específico (28,30%). Quanto à qualidade de vida, foram encontradas diferenças significativas para as dimensões função cognitivas (p=0,03), função sexual (p=0,009) e função social (p=0,04) no grupo que treinou com dispositivo específico; e para a dimensão função física (p=0,03) no grupo que treinou com incentivador respiratório. Conclui-se que os pacientes, do sexo masculino, em hemodiálise apresentam diferenças na composição corporal quando comparados com sujeitos saudáveis; a Pimax e a %CVF predita para idade podem ser utilizadas como preditores de pobre capacidade funcional nesse grupo de pacientes; e por último, o TMI melhorou de forma significativa a força inspiratória e os aspectos relacionados à qualidade de vida dos dois grupos treinados.
39

Simulační studie robotické linky pro obsluhu obráběcího stroje a realizaci dokončovacích operací / A simulation study of a robotic cell for production machine operation and realization of finishing operation

Kljajič, Marko January 2020 (has links)
The aim of the thesis is conceptual design of robotic workplace with its subsequent simulation. The current workplace for manufacturing and deburring parts for automotive industry is operated manually. The plan is overall automation and replacement of operators by robots. The thesis deals with the concept of layout of elements in the cell, and the procedure of their selection or design. Process simulation is performed in the Process Simulate software from Siemens. For the purposes of the work is used RCS module, which on the basis of dynamic conditions can calculate the cycle of production very close to the reality. The production cycle is compared to the current workplace. The work also deals with the economic evaluation of the proposed workplace.
40

Vztah mezi gradienty diverzity, geografickým rozšířením a životními strategiemi afrických ptáků / The relationship between diversity patters, spatial distribution and life-histories in African birds

Tószögyová, Anna January 2011 (has links)
Species with particular traits are not randomly distributed across landscape. Habitats provide the templet on which evolution forges characteristic morphologies and life-history strategies and environmental determinants in an ecological processes represent a filter for certain species with appropriate traits. It is essential to understand how spatial differences in community composition are affected by geographical patterns in a distribution of species characteristics. I was interested in searching and determining the relationships between species traits and environmental parameters within avifauna of south Africa. I investigated the effect of which variables of environment most influenced bird assemblage composition and distribution of species traits in space. Relationships between the environmental factors and the species traits and life-history stategies were investigated using RLQ analysis, a multivariate ordination method able to relate a species trait table to an environmental table by way of a species presence/absence table. The first axis of the RLQ analysis was highly statistically significant and explained most of the variability. It was strongly positively related to increasing productivity, to atributes reflecting vegetation character and to availability of water sources. The rest of...

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