• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 83
  • 31
  • 20
  • 17
  • 13
  • 8
  • 3
  • 3
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 236
  • 69
  • 63
  • 62
  • 26
  • 24
  • 22
  • 18
  • 18
  • 15
  • 13
  • 13
  • 13
  • 13
  • 12
  • 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.
141

Visioning the future of First Baptist Church of Denton, North Carolina by focusing on purpose

Peterson, Vernon W. January 2000 (has links) (PDF)
Thesis (D. Min.)--Midwestern Baptist Theological Seminary, 2000. / Abstract. Includes bibliographical references (leaves 215-219).
142

Operating the potter's wheel shaping faith /

Jenkins, Anne Elizabeth, January 2006 (has links)
Thesis (D. Min.)--Gordon Conwell Theological Seminary, 2006. / Abstract and vita. Includes bibliographical references (leaves 125-128).
143

Islamic ceramic ornamentation and process : proposals for a new aesthetic vocabulary in contemporary architectural embellishment within kuwait

Alkandari, Fahad A. H. H. January 2011 (has links)
Islamic architecture is arguably one of the greatest manifestations of Islamic visual culture. One of the defining aspects of the unique, aesthetic richness of traditional Islamic architecture has been the application of ceramic ornamentation or embellishment. There is a growing concern, however, that this legacy is being eroded. The diminishing identity of Islamic visual culture is particularly evident through current architectural developments occurring in the Arab states. The building revolution in the Gulf countries has dramatically increased momentum since the onset of the ‗oil economy‘, echoing the phenomena of globalization. This research project explores these concerns, discussing the erosion of Islamic ‗identity‘ within contemporary architecture in the Gulf States and in particularly Kuwait, as well as the ensuing decline in the use of ceramics as a defining embellishment material. The research compares the aesthetics of traditional and contemporary Islamic architectural design, whilst also examining the reasons behind this erosion in traditional design style. The diminishing identity of Islamic visual culture is investigated by combining studies in the fields of art, aesthetics, design, architecture, and the social sciences, in order to understand the nature of the research problem. A series of case-studies demonstrates how ceramics may be used to re-introduce a sense of Islamic identity within contemporary architecture. This offers design proposals, new materials and technical processes that acknowledge the rich traditions of Islamic Ceramics while also being appropriate for application within the context of contemporary Islamic architecture detailing; blending contemporary aesthetics and technical thinking with traditional Islamic design. The aim of the case-studies is to offer proposals for a new aesthetic vocabulary of architectural embellishment that is both appropriate to and innovative within, the context of contemporary Islamic architecture. This new aesthetic vocabulary III specifically blends contemporary design principals, new materials and technical processes, whilst acknowledging the rich traditions of Islamic ceramics. The PhD project, applies two types of research methodology: theoretical research and practice-based research. The former focused on social sciences and applied quantitative and qualitative research approaches, including surveys and interviews undertaken within Kuwait. The findings obtained from these surveys verified the emergence of a new cultural style of contemporary architecture and shaped the practice-based element of the project; proposals for ceramic embellishment that are contemporary, while still reflecting many recognizable aspects of traditional Islamic design. The new architectural style can be attributed to factors such as globalization, the adoption of international building styles, and a seeming unwillingness to incorporate traditional styles into new building design, all of which contribute to the currently weak identity of Arabic / Islamic ceramics within Kuwait. Despite of this, the survey revealed that Kuwaiti society maintains a strong relationship and affiliation with Islamic culture, although many seemed unaware of their own rich culture and its past legacy. The practice-based research involved two distinct phases. The first phase involved the development of a large number (172) of new glazes. The glazes were intended to reflect the palette of colours used over generations of Islamic Ceramic culture, while still being appropriate for integration within the contemporary Islamic architectural environment. The second phase of practice involved a series of case studies, embracing a wide range of contemporary architectural ceramic design processes (including 2 and 3 Dimensional geometrical patterns and interpretations of contemporary calligraphic design). The case studies utilised a number of modern technologies, such as 3D Solid modelling, CNC Rapid Prototyping and Laser-cutting, to prove that modern design and manufacturing technologies can be integrated within traditional ceramic processes. The aim being to both provide ceramic products that architects and designers can use to enhance the modern IV architectural environment of Kuwait and re-establish the creative status of ceramics.
144

Automatic adjustments of NC programs in machining centers

Persson, Måns, Waern, Tom January 2018 (has links)
The goal of this master thesis was to automate the compensation of NC-programs. Automatic compensations can reduce errors and make the production more efficient. This is vital for increased precision and meeting the quality demands from the market.The project started with a study of how the feedback-loop between production and measurements was done at the time and also researching how the data could be sent between the different machines. This was done by researching solutions of similar problems and interviewing the machine operators. Simulations of how automation could be done with more in-depth measurements of the production machine were also made.The limitations was also evaluated. Research was done on errors and practical flaws which could be problematic for automation.The automation was implemented using Java to send the data between the measuring machine to the production machine. Furthermore a UI was created for the machine operators so that the information flow was under supervision at all times. The UI would suggest a compensation from a pre-programmed algorithm together with the measuring data, and the operator could then decide whether or not to diverge from the suggested compensation.
145

Desenvolvimento de uma fresadora CNC aderente à norma STEP-NC baseado no controlador de máquina avançado (EMC2)

Gutierrez Paredes, Miguel Eduardo 03 September 2013 (has links)
Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia Departamento de Engenharia Mecânica, 2013. / Submitted by Alaíde Gonçalves dos Santos (alaide@unb.br) on 2013-11-29T11:04:04Z No. of bitstreams: 1 2013_MiguelEduardoGutierrezParedes.pdf: 15355916 bytes, checksum: 1e77add6f0b92d80f9670d197374f50e (MD5) / Approved for entry into archive by Guimaraes Jacqueline(jacqueline.guimaraes@bce.unb.br) on 2014-02-28T12:16:20Z (GMT) No. of bitstreams: 1 2013_MiguelEduardoGutierrezParedes.pdf: 15355916 bytes, checksum: 1e77add6f0b92d80f9670d197374f50e (MD5) / Made available in DSpace on 2014-02-28T12:16:20Z (GMT). No. of bitstreams: 1 2013_MiguelEduardoGutierrezParedes.pdf: 15355916 bytes, checksum: 1e77add6f0b92d80f9670d197374f50e (MD5) / Este trabalho apresenta o desenvolvimento e a validação de uma arquitetura de um controlador numérico computadorizado (CNC) aderente à norma STEP-NC por médio de um adaptador de STEP-NC a Código G. O CNC está associado ao processo de fresamento. O controlador STEP-NC desenvolvido é baseado no controlador de código aberto EMC (Enhanced Machine Controller) aderente à norma RS-274, que originalmente trabalha com programa NC (Numerical Control) usando códigos G e M. Para validação da arquitetura do controlador foi desenvolvida uma máquina-ferramenta controlada numericamente com topologia tipo Router (fresadora com estrutura em portal) com três graus de liberdade tendo como controlador o EMC em plataforma x86 (computador pessoal) usando o sistema operacional Ubuntu/Linux. O controlador EMC foi integrado com o modelo de dados STEP-NC Parte 21 utilizando um adaptador do arquivo físico p21 a código G, permitindo que o EMC receba como entrada um programa de comando numérico em formato STEP-NC Part-21. O formato se baseia no conceito de workingsteps, features de usinagem e operações de usinagem, entre outras entidades descritas pela norma; ou seja, o programa STEP-NC foca-se em uma descrição de alto nível baseada em features de usinagem e em um modelo de dados mais sofisticado, mas não na movimentação dos eixos da máquina. O comando numérico com código STEP-NC é gerado pelo sistema integrado de projeto, planejamento de processo e manufatura auxiliado por computador (CAD/CAPP/CAM) denominado STEP Modeler (http://www.grima.ufsc.br/stepnc_project/), desenvolvido pelo GRIMA/UFSC, que permite a modelagem de uma peça prismática via Web baseada em features de usinagem, tendo um modelo de dados aderente ao projeto STEP, viabilizando a integração do ciclo de vida de uma peça, do projeto à fabricação, via Web. O controlador EMC com o adaptador STEP-NC utiliza o código gerado pelo STEP Modeler e o executa de forma transparente para o operador da Router CNC, especialmente desenvolvida para validação da arquitetura idealizada. Este desenvolvimento permitiu a validação do conceito de integração do ciclo de vida do projeto à fabricação baseado no modelo de dados STEP-NC, utilizando os conceitos de features de projeto e usinagem. A arquitetura é apresentada usando modelos IDEF0 (Integration Definition for Function Modeling) e UML (Unified Modeling Language), mostrando a especificação do sistema integrado CAD/CAPP/CAM, em especial a etapa associada ao CAM Execução, ou seja, o controlador/adaptador STEP-NC desenvolvido baseado no EMC. O projeto detalhado da Router é apresentado de forma resumida. Os resultados obtidos são mostrados através de estudo de caso com a fabricação de peças exemplos, contemplando sua medição e análise. O ambiente STEP-NC foi concebido para um contexto Web sendo também usado em disciplinas de Automação da Manufatura de graduação e pós-graduação da UnB e da UFSC, visando à apresentação dos conceitos e modelos de dados baseados em STEP, que será o futuro da Automação da Manufatura, estando a cada ano mais madura. _______________________________________________________________________________________ ABSTRACT / This document describes the development and validation of the architecture of a numerical computer controller that is adherent to the standard STEP-NC by means of an adapter of STEP-NC to G-Code. The CNC is associated with the milling process. The STEP-NC controller development is based on the open source driver EMC (Enhanced Machine Controller) adherent to the standard RS-274 that originally works with the NC program using G/M codes. In order to validate the controller architecture, the NC machine-tool topology type Router (portal structure) was developed with three degrees of freedom to have the EMC controller in x86 platform (personal computer) using the operating system Ubuntu/Linux. The EMC controller was integrated using an adapter to the Data Model STEP-NC Part- 11, allowing the EMC to receive as an input a numerical control program in a format STEP-NC Part-21 also called STEP. The format is based on the concept of workingsteps, machining features and machining operations, among others that are described by the standard, i.e., the STEP program focuses on a high-level description based on machining features and a more sophisticated data model but not the movement of the machine axes. This numerical control program with STEP-NC code is generated by the integrated design, process planning and computer-aided manufacturing (CAD / CAPP / CAM) called STEP Modeler (http://www.grima.ufsc.br/stepnc_project/), developed by GRIMA/UFSC, that allows the modeling of a prismatic part web-based machining features, having a data model adhering to the STEP project, enabling the integration of the life cycle of a piece, from design to manufacturing, via Web. The EMC controller with STEP-NC adapter uses codes generated by STEP Modeler and runs transparently to the operator of specially developed CNC Router to validate the architecture conceived. This development allows the validation of the concept of integration lifecycle from design to manufacturing based on the data model of STEP-NC, using the concepts of design and machining features. The architecture is presented to use models IDEF0 (Integration Definition for Function Modeling) and UML (Unified Modeling Language), showing the specification of integrated system CAD / CAPP / CAM, particularly the stage associated with CAM Execution, i.e., the controller/adapter STEP-NC developed based on EMC. The detailed project of the Router CNC is presented in a summarized way. The results are shown through study of cases, process planning and manufacturing parts examples, with measurement and analysis. The environment STEP-NC has been designed for Web context being also used in the disciplines of the Manufacturing Automation of graduate and postgraduate of UNB and UFSC, aiming at presentation of concepts and data models based on STEP, which will be the future of Automation Manufacturing, maturing through time and technological improvements.
146

What is design? : an empirical investigation into conceptions of design in the community of design stakeholders

Micklethwaite, Paul Hilton January 2002 (has links)
This thesis describes a project investigating conceptions of design in the community of design stakeholders. A 'democratization of design' is identified, in terms of a widened mode of design engagement. The origins of the project are located in the accompanying observation that 'design means different things to different people'. The project has three aims: (i) to establish the contemporary UK context for the social study of design; (ii) to expand upon the identified theme of the democratization of design; and (iii) to empirically investigate conceptions of design in the community of design stakeholders. The first two aims are fulfilled through a review and discussion of existing secondary sources. The third aim is fulfilled by primary research, in the form of an empirical interview study conducted with design stakeholder informants. The interview study embodies an interpretative phenomenological theoretical perspective, and employs qualitative research method. A theoretical sample of 31 interview informants was drawn from five design stakeholder groups: Business; Designers; Education; Promotion; Users. Conceptions of design within the collected interview data are investigated through a template analysis. An analysis of collected interview data is presented in the form of an holistic map or 'template' of the data organized by thematic discussion of 'design'. These empirical findings are presented and discussed narratively and graphically. A total of 41 interrelating 'conceptions of design' are identified. Empirical findings are synthesized with the response to aims (i) and (ii). This generates two main final research outcomes: firstly, a degree of informant scepticism and ambivalence is apparent towards the heightened political, cultural and economic profile for design; secondly, the democratization of design is seen as a worthy ideal, but one which is difficult to realize. In conclusion, a number of further implications of the project are also discussed.
147

Aplikace měřicích sond v procesu obrábění / Application of a measuring probes in milling proces

Vlček, Michal January 2010 (has links)
his master thesis deals with application of measuring probes in machining process. There is indicated a brief overview of the measurement methods used in cutting operation. It is also focused on the measurements of using probes to verify the acceleration and refinement of the production.
148

Technologie výroby kombinovaných řezných nástrojů / Technology of production combinated cutting tools

Rusz, Radek January 2012 (has links)
In the thesis is solved manufacturing technology of step drill from material of cemented carbide. At first is made review of existing shank cutting tool types, after that follows an analysis of cemented carbide tool material. In the next part of thesis is manufacturing technology of this tool, including review of grinding wheels, designed. Output of this work is procedure of program designing for manufacturing this tool in software Numroto. Next output is techno-economic evaluation of step hole manufacture with combined tool and comparison to conventional type of manufacture.
149

Výroba kovového těsnicího kroužku na CNC obráběcím stroji / Production of metal sealing ring on the Computer Numerical Control machine tool

Kubíček, Dominik January 2012 (has links)
Theoretical analysis of the possibility of manufacturing a metal sealing ring on the CNC machine tool. Selecting the most appropriate technology and manufacturing process analysis, involving selection of materials, tools and machining conditions.
150

Možnosti softwaru SinuTrain 4.7 při programování CNC obráběcích strojů / SinuTrain 4.7 tools for programming of CNC machines

Král, Zdeněk January 2017 (has links)
This master's thesis is about the possibilities of NC programming of car wheel hub component in software SinuTrain 4.7. The theoretical part is focused on the integration of the SINUMERIK 840D control system with other control systems, it contains informations about basic methods of NC programming and research relate to the field of materials used for the production of component. The practical part of the thesis includes the design and processing of technical documentation of the component, production technology and NC program. The output of this thesis is practical verified the function of the NC program by simulation in software SinuTrain 4.7.

Page generated in 0.024 seconds