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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.
11

Influência da flexibilidade das ligações no projeto de estruturas metálicas

Barbosa, Giovana Daltrozo January 2006 (has links)
Este trabalho aborda ligações semi-rígidas com o objetivo de verificar a influência da flexibilidade na análise de estruturas metálicas, com o propósito de apresentar um modelo que represente o real comportamento das conexões assumindo uma situação intermediária entre totalmente rígida e totalmente flexível. Os procedimentos empregados para determinar as propriedades destas conexões estão embasados nos métodos descritos pelo anexo J do Eurocode 3 e recomendações do BCSA/SCI. Com intuito de automatizar o cálculo das conexões semi-rígidas foi implementado um programa computacional que fornece as propriedades necessárias das ligações entre vigas e pilares através da entrada de dados geométricos e especificações do material empregado. São abordadas ligações soldadas e ligações parafusadas com chapa de extremidade.O trabalho apresenta, ainda, uma avaliação da redistribuição de solicitações nas estruturas de aço. Fazendo a análise de um pórtico plano empregando molas rotacionais nos nós de encontro entre vigas e pilares inserindo a rigidez rotacional obtida através dos procedimentos numéricos apresentados neste trabalho. Esta mesma estrutura foi analisada da maneira tradicional, ou seja, considerando nós rígidos no encontro entre vigas e pilares. Através da analogia entre os resultados obtidos pelas duas análises é possível visualizar a diferença entre a distribuição nas solicitações. Dessa forma, é possível verificar a influência da rigidez das ligações na análise das estruturas metálicas. / This work approaches semi-rigid connections with the purpose to verify the influence of connections in the analysis of steel structures, with the intention to present a model that represents the real behavior of the connections assuming an intermediate situation between totally rigid and totally pinned. The used procedures to determine the properties of these connections are based in the described methods for the Annex J of the Eurocode 3 and BCSA/SCI. With intention to speed the calculations of the semi-rigid connections a computational program was implemented that supplies to the necessary properties of the connections between beams and columns through the geometric data entry and specifications of the employed material. They are boarded welded connections and connections bolted with extend end plate. The work presents, still, an evaluation of the new distribution of loads in the steel structures. Making the analysis of a plain frame using rotational springs between beams and columns inserting the gotten rotational rigidity through the presented numerical procedures in this work. This same structure was analyzed in the traditional way, that is, considering rigid we in the meeting between beams and columns. Through the analogy it enters the results gotten for the two analyses is possible to visualize the difference enters the distribution in the requests. Of this form, it is possible to verify the influence of flexibility in the analysis of the metallic structures.
12

Influência da flexibilidade das ligações no projeto de estruturas metálicas

Barbosa, Giovana Daltrozo January 2006 (has links)
Este trabalho aborda ligações semi-rígidas com o objetivo de verificar a influência da flexibilidade na análise de estruturas metálicas, com o propósito de apresentar um modelo que represente o real comportamento das conexões assumindo uma situação intermediária entre totalmente rígida e totalmente flexível. Os procedimentos empregados para determinar as propriedades destas conexões estão embasados nos métodos descritos pelo anexo J do Eurocode 3 e recomendações do BCSA/SCI. Com intuito de automatizar o cálculo das conexões semi-rígidas foi implementado um programa computacional que fornece as propriedades necessárias das ligações entre vigas e pilares através da entrada de dados geométricos e especificações do material empregado. São abordadas ligações soldadas e ligações parafusadas com chapa de extremidade.O trabalho apresenta, ainda, uma avaliação da redistribuição de solicitações nas estruturas de aço. Fazendo a análise de um pórtico plano empregando molas rotacionais nos nós de encontro entre vigas e pilares inserindo a rigidez rotacional obtida através dos procedimentos numéricos apresentados neste trabalho. Esta mesma estrutura foi analisada da maneira tradicional, ou seja, considerando nós rígidos no encontro entre vigas e pilares. Através da analogia entre os resultados obtidos pelas duas análises é possível visualizar a diferença entre a distribuição nas solicitações. Dessa forma, é possível verificar a influência da rigidez das ligações na análise das estruturas metálicas. / This work approaches semi-rigid connections with the purpose to verify the influence of connections in the analysis of steel structures, with the intention to present a model that represents the real behavior of the connections assuming an intermediate situation between totally rigid and totally pinned. The used procedures to determine the properties of these connections are based in the described methods for the Annex J of the Eurocode 3 and BCSA/SCI. With intention to speed the calculations of the semi-rigid connections a computational program was implemented that supplies to the necessary properties of the connections between beams and columns through the geometric data entry and specifications of the employed material. They are boarded welded connections and connections bolted with extend end plate. The work presents, still, an evaluation of the new distribution of loads in the steel structures. Making the analysis of a plain frame using rotational springs between beams and columns inserting the gotten rotational rigidity through the presented numerical procedures in this work. This same structure was analyzed in the traditional way, that is, considering rigid we in the meeting between beams and columns. Through the analogy it enters the results gotten for the two analyses is possible to visualize the difference enters the distribution in the requests. Of this form, it is possible to verify the influence of flexibility in the analysis of the metallic structures.
13

Influência da flexibilidade das ligações no projeto de estruturas metálicas

Barbosa, Giovana Daltrozo January 2006 (has links)
Este trabalho aborda ligações semi-rígidas com o objetivo de verificar a influência da flexibilidade na análise de estruturas metálicas, com o propósito de apresentar um modelo que represente o real comportamento das conexões assumindo uma situação intermediária entre totalmente rígida e totalmente flexível. Os procedimentos empregados para determinar as propriedades destas conexões estão embasados nos métodos descritos pelo anexo J do Eurocode 3 e recomendações do BCSA/SCI. Com intuito de automatizar o cálculo das conexões semi-rígidas foi implementado um programa computacional que fornece as propriedades necessárias das ligações entre vigas e pilares através da entrada de dados geométricos e especificações do material empregado. São abordadas ligações soldadas e ligações parafusadas com chapa de extremidade.O trabalho apresenta, ainda, uma avaliação da redistribuição de solicitações nas estruturas de aço. Fazendo a análise de um pórtico plano empregando molas rotacionais nos nós de encontro entre vigas e pilares inserindo a rigidez rotacional obtida através dos procedimentos numéricos apresentados neste trabalho. Esta mesma estrutura foi analisada da maneira tradicional, ou seja, considerando nós rígidos no encontro entre vigas e pilares. Através da analogia entre os resultados obtidos pelas duas análises é possível visualizar a diferença entre a distribuição nas solicitações. Dessa forma, é possível verificar a influência da rigidez das ligações na análise das estruturas metálicas. / This work approaches semi-rigid connections with the purpose to verify the influence of connections in the analysis of steel structures, with the intention to present a model that represents the real behavior of the connections assuming an intermediate situation between totally rigid and totally pinned. The used procedures to determine the properties of these connections are based in the described methods for the Annex J of the Eurocode 3 and BCSA/SCI. With intention to speed the calculations of the semi-rigid connections a computational program was implemented that supplies to the necessary properties of the connections between beams and columns through the geometric data entry and specifications of the employed material. They are boarded welded connections and connections bolted with extend end plate. The work presents, still, an evaluation of the new distribution of loads in the steel structures. Making the analysis of a plain frame using rotational springs between beams and columns inserting the gotten rotational rigidity through the presented numerical procedures in this work. This same structure was analyzed in the traditional way, that is, considering rigid we in the meeting between beams and columns. Through the analogy it enters the results gotten for the two analyses is possible to visualize the difference enters the distribution in the requests. Of this form, it is possible to verify the influence of flexibility in the analysis of the metallic structures.
14

Extending Your PD Reach: Professional Development Strategies That Help Change Classroom Practices

Trivette, Carol M. 27 April 2017 (has links)
This presentation will describe an evidence-based approach to professional development that will help deliver strong knowledge content and make changes in classroom practices. During this session, participants will discuss strategies they use to extend the impact of their PD on classroom practices; as well as help create and assess new strategies.
15

Alla goda ting är fem : Komposition med pentatoniskt material med syfte att utvecklas som improvisatör.

Kjellqvist, Emil January 2023 (has links)
This bachelor essay aims to explore how composition with pentatonic scales can help to expand the vocabulary of a jazz improviser. It also has the purpose of expanding the knowledge of the relationship between harmony and pentatonic scales. I have written five melodies with five different pentatonic scales to see how composing can affect my improvisational skills on the tenor saxophone. The method is to get familiar with the scales, write a melody and then harmonize it.  Composition utilizing pentatonic scales can affect how you improvise. The pentatonic scales provide sounds that can be very useful. I play larger intervals when improvising. It was also beneficial to dig deep into the pentatonic landscape and to find the spiciest notes of each scale. After this study, I have a better knowledge of harmony and the pentatonic scales that can go with it. During this investigation, I have considered doing this again, choosing scales whose span is larger than one octave. / <p>Kompositör och arraggör: Emil Kjellqvist</p><p>Repertoar: Änglatrumpet, Körsbär, Skalman, På väg hem, Rosenlundsparken.</p><p>Medverkande musiker: Emil Kjellqvist- tenorsaxofon, Tumi Torfason- trumpet, Isac Schillberg- altsaxofon, Melker Annas- trombon, David Stener- piano, Olle Lannér Risenfors- kontrabas, Filip Öhman- trummor.</p><p>Bifogar även en ljudfil ifrån min examenskonsert med ovansatående musiker samt låtar. </p>
16

我國財務會計準則公報第二十八號之遵循程度與公司特性之關聯性研究

劉奉岩 Unknown Date (has links)
本研究在探討銀行業對於我國財務會計準則公報第28號公報之遵循現況,以及公司特性與遵循程度之關聯性。本研究以六項公司特性,包括負債比例、帳面價值對市值比、公司規模、盈餘水準變化、是否委任前五大會計師事務所查核以及是否委任勤業會計師事務所查核,探討與28號公報遵循程度之關係。 本研究之實證結果可分為28號公報之遵循現況、公報各條文遵循程度之差異以及遵循程度與公司特性之關聯性三部份。首先,在遵循現況方面,銀行在遵循28號公報之揭露規定並無困難。而在進一步分析後,發現銀行在第33、47與48段之遵循程度最差。 其次,在公報各條文遵循程度之差異方面,銀行在28號公報之遵循程度具有顯著差異,而在進一步分析後,發現銀行在第28、33與47段的遵循程度具有顯著差異。 最後,在遵循程度與公司特性之關聯性方面,僅是否委任勤業會計師事務所查核可解釋銀行在28號公報的遵循程度高低。 / This study investigated the disclosure status of banking industry to understand how they follow the requirements of SFAS(Taiwan’s Statements of Financial Accounting Standards) No. 28. This study designed criteria to examine how each firm followed the requirements of SFAS No. 28, and further explored the relationship between the SCORES and characteristics. This study had three main outcomes. First, banking industry had no difficulty in following the disclosure requirements of SFAS No. 28. Especially, we can find the extend of accordance to SFAS No. 28 was not be completely met in the scope 33, 47, and 48. Second, empirical study of the extend of accordance to SFAS No.28 was significant different. After further investigating, we find the extend of accordance to scope 28, 33, and 48 of SFAS No.28 was significant different. Finally, only the CPA firm which was chosen by banking industry was TN Soong & Co(Deloitte Touche Tohmatsu’s member firm in Taiwan) or not could explain the extend of accordance to SFAS No.28.
17

Model of the US CENTCOM joint targeting architecture : develop targets

Jaskowiak, Derek C., Germakian, David C. 06 1900 (has links)
Approved for public release, distribution is unlimited / This thesis was conducted in support of a larger research effort to improve US CENTCOM's joint targeting architecture. The ultimate goal of this research project is to develop a working Extend model, which accurately describes CENTCOM's targeting process, in order to assist the Joint Intelligence Interoperability Board (JIIB) in their JIIB Systems Baseline Assessment (JSBA) for fiscal year 2004, as well as for all subsequent JSBAs. This thesis explains the advantages of using a systems engineering approach to developing a process model, and ultimately an Extend model. It provides a brief description of the entire CENTCOM targeting cycle; however, it focuses on the "Develop Targets" activity. The two major products of this research effort are an accurate and detailed paper model using Microsoft Visio, and a baseline Extend model of the "Develop Targets" activity. The Extend model and its capabilities are described in full detail, and it will serve as the foundation from which the other activities in this targeting process will be modeled. Additionally, recommendations for future improvement of the model are explained. / Ensign, United States Naval Reserve
18

Návrh marketingové komunikace pro ubytovnu Služeb Blansko, s.r.o. / Marketing Communication Proposal for Hostel Služby Blansko, Ltd.

Zezula, Radek January 2009 (has links)
This diploma thesis focuses on analyzing limitations of marketing communication of Služby Blansko, Ltd. It tries to establish how these shortcomings could be eliminated and in achieving these goal different tools like marketing mix analysis is used. Based on the feedbacks from the customers and discussion with the management of the company, some measures on how to properly react to each individual customer demand and increase attendance and popularity of Služby Blansko, Ltd. were suggested.
19

Melhoria da produtividade na obtenção de furos em liga de aluminio aeronautico com ferramentas de aço rapido / Improvement of the productivity in getting holes in aviation aluminum alloys with high speed tools

Yamada, Yoshio 02 December 2010 (has links)
Orientador: Nivaldo Lemos Coppini / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica / Made available in DSpace on 2018-08-15T08:50:52Z (GMT). No. of bitstreams: 1 Yamada_Yoshio_M.pdf: 2447082 bytes, checksum: c2b6d6ed800ac7addff199bda2a55b5a (MD5) Previous issue date: 2010 / Resumo: O objetivo deste trabalho consiste em aperfeiçoar o processo de fabricação de furos realizados pela empresa X em um de seus produtos. Além da otimização deverá ser mantida a qualidade dimensional através do controle do diâmetro, da cilindricidade, da circularidade e do acabamento superficial de furos cilíndricos obtidos pelo processo de alargamento, com ferramentas de aço rápido em de liga de alumínio Al 7175 T66, para se obter furos com alta qualidade superficial e precisão de forma, que atendam as especificações de projeto de componentes da indústria aeronáutica. É estudada a influência das variáveis do processo: velocidade de corte, avanço, sobre as variáveis de resposta: força de avanço e momento torsor. O processo de alargamento estudado é realizado em 04 operações sendo 02 operações de furação e 02 operações de alargamento com ferramentas de aço rápido, na primeira etapa os ensaios foram realizados com os parâmetros de usinagem do processo produtivo para caracterizar o processo, na segunda etapa foi implementada uma elevação dos parâmetros de usinagem com uma redução do tempo de produção. Na terceira etapa os ensaios foram realizados para avaliar a influência do pré-furo e do pré-alargamento na qualidade final, acarretando em uma maior redução do tempo de processo comparado com o processo otimizado. Pretende-se obter tal furo com a realização de apenas uma etapa de furação e uma de alargamento. Para isso, é necessária a observação não só da qualidade das peças em relação aos requisitos exigidos pelos clientes, mas também do tempo de ciclo de produção. As condições otimizadas e resultantes foram: velocidade de corte 100 m/min., avanço 0,2 mm/rot., com operação de pré-furação e sem operação de pré-alargamento. Com estas condições reduziu-se o tempo de produção por peça de 1,42 min. para 0,63 min / Abstract: The purpose of this study is to optimize the manufacturing process of holes made by Company X in one of their products. Besides the optimization, should be maintained the dimensional quality by controlling the diameter, roundness, circularity, and surface finish of cylindrical holes obtained by the widening process, with high-speed steel reamers in a aluminum alloy 7175-T66, to obtain holes with high surface quality and precision of form that meet the design specifications of aviation industry components. It is studied the influence of process variables: cutting speed, feed, about the response variables: feed force and torsion moment. The widening process studied is realized in four operations, consisting of two drilling operations and two widening operations with high-speed steel tools. In the first stage, the tests were carried out with machining parameters of the company to characterize the process. In the second stage, was implemented an increase in machining parameters with a reduction in the production time. In the third stage, the tests were realized to evaluate the influence of pre-drilling and pre-widening on the final quality, resulting in a further reduction of processing time compared with the optimized process. We intend to obtain this hole with the realization of only one drilling stage and one widening stage. For this, it's necessary not only the observation of the quality of the pieces in relation to the requirements demanded by the customers, but also the cycle time of production. The optimized conditions and resulting were: cutting speed of 100 m/min., feed of 0.2 mm/rev, with pre-drilling operation and without pre-widening operation. With this conditions, reduced the production time per piece of 1.42 min. to 0.63 min / Mestrado / Engenharia de Fabricação / Mestre em Engenharia Mecânica
20

Řešení nestacionárního pohybu tělesa v proudící kapalině / Solution of the unsteady motion of the body in the liquid flow

Zbavitel, Jan January 2018 (has links)
The thesis deals with CFD solution of flow through mechanical heart valves. The opening part includes a research on the negative impacts of implantation of artificial heart valves and the common approaches used in their modeling. This is followed by a detailed analysis of the dynamic mesh functionality and CFD solution is performed using the open-source library FOAM-extend. Part of the thesis focuses on evaluation of the geometry modifications from the perspective of forming the instabilities of the current and the course of force effects on the valve.

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