Dissertations / Theses on the topic 'CFD program'
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Ghanta, Nikhilesh. "Meta-modeling and Optimization of Computational Fluid Dynamics (CFD) analysis in thermal comfort for energy-efficient Chilled Beams-based Heating, Ventilation and Air-Conditioning (HVAC) systems." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126989.
Full textCataloged from the official PDF of thesis.
Includes bibliographical references (pages 172-178).
With the rapid rise in the use of air conditioning systems and technological advancements, there is an ever-increasing need for optimizing the HVAC systems for energy efficiency while maintaining adequate occupant thermal comfort. HVAC systems in buildings alone contribute to almost 15% of the overall energy consumption across all sectors in the world and optimizing this would contribute positively towards overcoming climate change and reducing the global carbon footprint. A relatively modern solution is to implement a smart building-based control system and one of the objectives of this study is to understand the physical phenomenon associated with workspaces conditioned by chilled beams and evaluated the methods to reduce energy consumption.
Building upon the initial work aimed at creating a workflow for a smart building, this thesis presents the results of both experimental and computational studies of occupant thermal comfort with chilled beams (primarily in conference rooms) and the various inefficiencies associated. Results from these studies have helped to inform an optimum location for the installation of a chilled beam to counter the effects of incoming solar irradiation through an external window while keeping the energy consumption low. A detailed understanding of the various parameters influencing the temperature distribution in a room with chilled beams is achieved using CFD studies and data analysis of experimental data logging.
The work converges into a fundamental question of where, how, and what to measure to best monitor and control the human thermal comfort, and a novel technique was presented using the existing sensors which would provide a significant improvement over other existing methods in practice. This technique was validated using a series of experiments. The thesis concludes by presenting early works on hybrid HVAC systems including chilled beams and ceiling fans for higher economic gains. Future work should seek to perform CFD simulations for a better understanding of hybrid HVAC systems, both in conference rooms and open-plan office spaces, and also to design a new sensor that could better estimate human thermal comfort.
by Nikhilesh Ghanta.
S.M.
S.M. Massachusetts Institute of Technology, Computation for Design and Optimization Program
Rapo, Mark Andrew. "CFD study of hydrodynamic signal perception by fish using the lateral line system." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/46805.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (leaves 264-277).
The lateral line system on fish has been found to aid in schooling behavior, courtship communication, active and passive hydrodynamic imaging, and prey detection. The most widely used artificial prey stimulus has been the vibrating sphere, which some fish are able to detect even when the signal velocities to its lateral line are orders of magnitude smaller than background current velocities. It is not clear how the fish are able to extract this signal. This thesis uses a series of computational fluid dynamic (CFD) simulations, matched with recent experiments, to quantify the effects of 3D fish body parts on the received dipole signals, and to determine signal detection abilities of the lateral line system in background flow conditions. An approximation is developed for the dipole induced, oscillatory, boundary layer velocity profile over the surface of a fish. An analytic solution is developed for the case when the surface is a wall, and is accurate at points of maximal surface tangential velocity. Results indicate that the flow outside a thin viscous layer remains potential in nature, and that body parts, such as fins, do not significantly affect the received dipole signal in still water conditions. In addition, the canal lateral line system of the sculpin is shown to be over 100 times more sensitive than the superficial lateral line system to high frequency dipole stimuli. Analytical models were developed for the Mottled Sculpin canal and superficial neuromast motions, in response to hydrodynamic signals. When the background flow was laminar, the neuromast motions induced by the stimulus signal at threshold had a spectral peak larger than spectral peaks resulting from the background flow induced motions.
(cont.) When the turbulence level increased, the resulting induced neuromast motions had dominant low frequency oscillations. For fish using the signal encoding mechanisms of phase-locking or spike rate increasing, signal masking should occur.
by Mark Andrew Rapo.
Ph.D.
Duda, Petr. "Optimalizace polohy propelerové turbíny v kašně." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231499.
Full textKoňařík, Josef. "Analýza aerodynamiky vozidla Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228797.
Full textWebb, Alex K. "FDS modelling of hot smoke testing, cinema and airport concourse." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-120606-181621/.
Full textDahl, Erik. "Insticksmodul till CAD-program." Thesis, KTH, Maskinkonstruktion (Inst.), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172039.
Full textCAD computer programs have become standard tools within product development and offer designers many tools. For some time now, the interest for environmental thinking has grown within many industries and it is expected that companies in the future will put more and more effort into environmentally friendly product development to meet higher standards. This project aims to, on a conceptual level, create tools to be integrated in an existing CAD computer program. The tools will be implemented as a plug-in and try to aid the user during the design phase by presenting useful information about the CAD-model and enhance the workflow. The project does not include programming or implementing code in existing programs. The method used in developing the tools is the “Osborn-Parnes creative problem solving process” and includes literature studies, interviews and questionnaire studies. The concept development includes creating content and designing layout, resulting in a number of tools to be used in CAD program workspace. Existing CAD programs and plugins are looked at to create a finished result being as realistic as possible.Should further development of the plugin take place, a more thorough user study is needed to be carried out, including professional CAD designers. More information is also needed to investigate the possibilities of programming the plug-in.
Kessy, Edgard. "Décomposition de domaine et calcul parallèle distribué : application à la mécanique des fluides." Rouen, 1997. http://www.theses.fr/1997ROUES052.
Full textZanatta, Massimo. "Valutazione di programmi di disegno assistito al calcolatore nel progetto concettuale degli aeromobili." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textPaseka, Jan. "Optimalizace NC programu pomocí CAD/CAM software." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231402.
Full textGoyal, Pragun. "CAD enabling smart handtools." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/95603.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 87-89).
CAD (Computer Aided Design) software allows one to describe a design in great detail and at any arbitary scale. However, our interface to CAD is still largely through traditional avenues: screen, keyboard and pointing devices. While these interfaces function for their intended purposes: text entry, pointing, browsing, etc, they are not designed for the purpose of mediating the flow of information from and to a physical workpiece. Traditional input interfaces are limited in the sense that they lack a direct connection with the workpiece, forcing the user to translate information gathered from the workpiece before it can be input into the computer. A similar disconnect also exists in the realm of output from the computer. On one extreme, the screen as an output interface forces the user to interpret and translate information conveyed graphically to the context of the workpiece at hand. On the other extreme, devices like CNC machines and 3D printers lack a way for the user to engage with the fabrication and to iteratively change design parameters in realtime. In this work, I present, two handtools that build on the philosophy of Free-D ([1] and [2]), a smart milling tool recently developed in our research group. to create a similar interface between Computer Aided Design and the physical workpiece, in entirely different application domains. The two handtools are BoardLab and Nishanchi. BoardLab is a smart, context-aware oscilloscope probe that can be used to dynamically search for just-in-time information on electronic circuit board design data and to automatically annotate the design data with measurements and test data. Nishanchi is a handheld inkjet printer and 3D digitizer that can be used to print raster graphics on non-conformable surfaces.
by Pragun Goyal.
S.M.
SILVA, Marcelo Mariano. "Programas para visualização de simulações computacionais de dinâmica de fluidos (CFD) usando opendx." reponame:Repositório Institucional do IEN, 2008. http://hdl.handle.net/ien/565.
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A busca de soluções de hardware e softwares de alto desempenho e baixo custo sempre norteia os trabalhos no Laboratório de Computação Paralela do IEN. Nesse contexto, esse trabalho discorre sobre a construção de programas de visualização de simulações computacionais de dinâmica de fluidos (CFD) utilizando o software aberto OpenDx. Os programas desenvolvidos são úteis para a geração de imagens e vídeos em 2 e 3 dimensões, são interativos, de fácil utilização pelo usuário e visam atender às necessidades dos pesquisadores de dinâmica dos fluidos. No presente trabalho é feita uma descrição detalhada da construção de programas, das instituições de uso e do OpenDx como ferramenta de desenvolvimento. As descrições acompanham exemplos que ajudam o leitor a compreender o alcance das aplicações desses programas.
The search for high performance and low cost hardware and software solutions always guides the developments performed at the IEN parallel computing laboratory. In this context, this dissertation about the building of programs for visualization of computational fluid dynamics (CFD) simulations using the open source software Open Dx was written. The programs developed are useful to produce videos and images in two or three dimensions. They are interactive, easily to use and were designed to serve fluid dynamics researchers. A detailed description about how this programs were developed and the complete instructions of how to use them was done. The use of OpenDx as development tool is also introduced. There are examples that help the reader to understand how programs can be useful for many applications
Erener, Kaan. "Developing A Four-bar Mechanism Synthesis Program In Cad Environment." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613354/index.pdf.
Full textKo, Hye Mi. "Trends in CAD education in interior design programs." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41972.
Full textThis research investigated Computer Aided Design (CAD) education in the interior design. program focusing on educators' opinions about creativity aspects including computer application, teaching materials and teaching methods as well as other trends in CAD education. A questionnaire was sent to one hundred eighty-two members of the Interior Design Educators Council (IDEC).
A frequency distribution was used on 69 usable returned surveys to describe the sample characteristics and to determine the teaching materials and support. Means and T-tests were employed to examine if a significant difference of opinions toward CAD integration existed between designers based on creativity, teaching materials, and teaching approaches.
Findings indicate that educators are thinking positively regarding the creativity aspects of teaching CAD. There was no significant difference between IBM educators and Apple Macintosh educators in terms of opinions concerning creativity and teaching approaches and also no significant difference in the educators who are using more flexible teaching approaches and the educators who are using more rigid teaching approaches in terms of creativity. Educators thought CAD courses are most helpful for students' future careers. Educators remarked that their college, department, and other faculties are generally very supportive. Overall the educators had fewer than 4 years of experience in teaching CAD. One or two CAD educators were teaching in each interior design program. IBM personal computer, AutoCAD software, instructor prepared tutorials were the most used teaching materials.
Master of Science
Horálek, Lukáš. "Výpočet chlazení asynchronního stroje pomocí programu Ansys CFX." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318176.
Full textUddin, Arth, and Ashkan Hosseini. "Modeling a computational program with mass and energy balances." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146534.
Full textEfter ombyggnationen av panna 6 vid Högdalenverket under år 2010, har det uppkommit en del problem i form av förhöjd kolmonoxid halt. Det kan finnas ett flertal förklaringar till problemet som innebär att fullständig förbränning inte sker. Det har även varit problem med askhanteringssystemet och sandåterföringen som inte fungerat som den ska, detta medför högre driftkostnader då det kräver en högre förbrukning av inertmaterial. Projektet var indelat i två faser, där den första fasen var att ta fram material- och energibalanser på pannan men också presentera de parametrar som man ville undersöka vidare för att möjligen identifiera orsakerna till de problem som pannan haft. I den andra fasen skulle experiment utformas i samråd med ansvariga från Fortum för att undersöka dessa parametrar. Under projektets gång har ändringar fått göras på projektbeskrivningen, då det krävs mer tid och noggrannare planering för att utföra test på pannan. Tre förslag på parametrar som kunde vara orsaken för CO problemen presenterades i slutet av fas ett och det konstaterades att två av förslagen inte gick att utföra under projektets gång på grund av både ekonomiska och driftrelaterade orsaker. Den tredje parametern bädd kvaliténs påverkan på förbränningen bestämdes i samråd med ansvariga i Fortum att utföras. Detta experiment kunde dock inte utföras då det uppstod vissa driftrelaterade svårigheter med pannan under projektets gång. Istället har en beskrivning av utförandet av experimentet lagts till detta projekt, som kan vid ett senare skede användas för att undersöka bädd kvaliténs påverkan på CO-halten. Nya ändringar av projektbeskrivningen innebar att syftet istället blev att vidareutveckla det beräkningsprogram som skapats under projektets första fas och som vid projektets slut ska överlämnas till de driftansvariga på Fortum. Detta beräkningsprogram tar hänsyn till de betydande parametrar som pannan regleras genom idag. Beräkningsprogrammet är framtaget med hjälp av Microsoft Excel och är grundat på material- och energibalanser. Detta program kan användas internt inom Fortum för att få en fingervisning på hur de olika massflödena skulle variera vid olika driftfall samt hur energibalansen för pannan då skulle se ut. Vid jämförelse med material- och energibalans som gjorts av pannleverantören framgick det att avvikelserna är väldigt små jämfört med det vi framtagit, samt att det beror främst på de antaganden som gjorts. Dessa antaganden kan elimineras genom att utföra experiment och få in mer data. Resultatet som fåtts av beräkningsprogrammet har jämförts med det resultat pannleverantören fick vid sin pannkartering med hänsyn till rökgasflöde, bränsleflöden, förbränningsluft flöde, askproduktion och energibalanser. Det har framkommit att avvikelserna är relativt små och det framtagna programmet ger ett teoretiskt helhetsperspektiv av pannan som överensstämmer med verkligheten. Även diskussioner har förts till åtgärder för problemet med förhöjda halter av kolmonoxid, samt huruvida beräkningsprogrammet kan vidareutvecklas i framtiden.
Ugianskis, Domas. "SLENKSTINĖS BETONINĖS GRAVITACINĖS UŽTVANKOS PROJEKTAVIMO AUTOMATIZAVIMAS CAD PROGRAMŲ PAGRINDU." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060517_190057-74142.
Full textKellerman, Jared Daniel. "CFT Faculty: Self-Assessment of LGB-Affirming Stances and Programs." Thesis, North Dakota State University, 2016. https://hdl.handle.net/10365/28053.
Full textMorad, Ayman Ahmed. "Geometric-based reasoning system for project planning utilizing AI and CAD technologies." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-06062008-172127/.
Full textElter, Matthias. "Computer-aided diagnosis of breast cancer." Tönning Lübeck Marburg Der Andere-Verl, 2010. http://d-nb.info/1001110773/04.
Full textValkodai, Aravind R. "A CAD program for modeling thin film micro-inductors and transformers for RFIC design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ31653.pdf.
Full textPatterson, J. Douglas. "CCD photometry of three short-period binary systems." Virtual Press, 1993. http://liblink.bsu.edu/uhtbin/catkey/865934.
Full textDepartment of Physics and Astronomy
Campbell, John A. "FORTRAN programs for aerodynamic analyses on the MicroVAX/2000 CAD/CAE workstation." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23241.
Full textSteelman-Dyer, Charles Alexius. "Robot van der Rohe : 375 Park Avenue and the Future of the CBD." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106453.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 105-108).
Robot van der Rohe is a redevelopment proposal for the Seagrams Building at 375 Park Avenue in New York City. A concept for a Conscious Building is developed after a thorough introduction of financial, architectural and technological underpinnings. The topics of innovation economics, real estate finance, building design and construction, architectural history and theory, ubiquitous computing, sensor technologies, urban economics and design, zoning and network science are covered. Robot van der Rohe represents a future vision of a dynamic and fluid high-rise, mixed-use office tower. By utilizing a sophisticated suite of sensors, the building is able to better respond to the needs of its occupants, operate more energy efficiently and encourage a productive and happy workplace. By quantifying how teams work within the building, Robot van der Rohe represents the next generation of office environments and will allow for the reduction in the economic cost of social capital. By reducing the cost of a fundamental input of production, such a Conscious Building is poised to capture entrepreneurial profits through increased rents. In the world of the Conscious Building, the computer programmer augments the architect and the building owner becomes curator of a forever-innovating network of tenants.
by Charles Alexius Steelman-Dyer.
S.M. in Real Estate Development
Carregari, André Luiz. "Estudo do escoamento de ar sobre a carroceria de um ônibus usando um programa de CFD e comparação com dados experimentais." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-23082006-090843/.
Full textTwo main objectives in the study of commercial vehicle aerodynamics are the reduction in fuel consumption and the improvement in engine refrigeration efficiency. These objectives can be achieved through development of devices which vary the flow characteristics around the vehicle and also through modification of the shape of external surfaces. The slope of rear surfaces, for instance, has large influence over the wake turbulence which forms behind the vehicle. The use of computational tools yields cost reduction and greater flexibility in automotive aerodynamic analysis. There is still a need, however, for verification of results, generated by these computational tools, with the largest possible number of test cases so that the mathematical model is adequately chosen and adjusted. The objective of the present work is the verification of experimental and computational results in the development of methodologies aiming at reduction of fuel consumption and improvement in engine refrigeration efficiency. Experimental and computational aerodynamic results were compared for a commercial bus model with a 1:17.5 scale. The experiments were conducted in an open section wind tunnel where pressure distribution and aerodynamic drag were analyzed. The numerical analysis was conducted using computational fluid dynamics software which solves the Reynolds Averaged Navier-Stokes equations using the finite volume method with a RNG 'capa' - 'épsilon' turbulence model
Kurauskas, Rytis. "Vektorinės grafinės informacijos skaitymo, redagavimo ir įrašymo programa." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2004. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2004~D_20040601_164335-90113.
Full textMutapcic, Emir, and n/a. "Optimised part programs for excimer laser-ablation micromachining directly from 3D CAD models." Swinburne University of Technology. Faculty of Engineering and Industrial Sciences, 2006. http://adt.lib.swin.edu.au./public/adt-VSWT20061117.154651.
Full textMutapcic, Emir. "Optimised part programs for excimer laser-ablation micromachining directly from 3D CAD models." Australian Digital Thesis Program, 2006. http://adt.lib.swin.edu.au/public/adt-VSWT20061117.154651.
Full textA thesis submitted to the Industrial Research Institute, Faculty of Engineering and Industrial Sciences, in fulfillment of the requirements for the degree of Doctor of Philosophy, Swinburne, ne University of Technology - 2006. Typescript. Includes bibliographical references (p. 218-229).
Káčerik, Martin. "Rozšíření programu VRUT o zobrazovací plugin v rozhraní Vulkan." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363861.
Full textDebiasi, Paula. "Ortorretificação de imagens CCD CBERS 2 atravás da transformação DLT." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/13763.
Full textThis work evaluates the orthoimages generation potentiality of the CCD sensor from the CBERS 2, by using a generalized mathematical model, say, the “Direct Linear Transformation (DLT)”. The transformation model was implemented by the pos graduated students from the Federal University of Paraná using the Delphi 4.0 language, and in this task an utilitarian software to adapt the Digital Elevation Model (DEM) from the Shuttle Radar Topography Mission (SRTM) function, on the program was produced. The land area surface used for trial is localized at the Paraná Oriental Centre and comprising the Guartelá canyon, varies in shape from an irregular to a plane embossment where variations up to 700m in height are found.Two DEM sources of altimetry information data for the orthoimages generations were used: The first generated from SRTM mission and the another one developed from contour lines and topographic points counted in a 1:50.000 scale. A orthorretification process, of a cutting out scene from the CBERS, was realized utilizing both MDE´s. The images were analyzed by statistics inferences and classified according to the Padrão de Exatidão Cartográfica (PEC) using check points. To evaluate the CCD CBERS 2 scene orthorefications necessity, the same cutting out was also object of geometric corrections having a second degree polynomial as a tool. The planimetrics residues generated by the second degree polynomial simplified corrections were just enough to demonstrate the necessity of the orthoretification process, it is, corrections of errors due to the embossment topography at the considered scene. The comparison of the images produced by the differents DEM´s demonstrate that the utilization of the DEM from the SRTM is a satisfactory tool for images orthoretifications of the CBERS 2.
Amin, Handren. "A comparative study of 2 CAD-integrated FE-programs using the linear static analysis." Thesis, Halmstad University, School of Business and Engineering (SET), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2355.
Full textThis Master’s thesis is summery of a comparative study of 2 commercial CAD-integrated
FE-programs. These FE-programs were CATIA v5 and ABAQUS 6.3-7. The primary
objective of this study is to investigate the basic FEA capabilities of CATIA and
ABAQUS 6.7-3 in performing the linear static analysis and to identify whether there are
any differences and similarities between results the both Finite Element FE codes give.
The overall research question in the present thesis is: Do different FE programs, here
CATIA and ABAQUS, give the same results for FE analysis giving the same models if
subjected to the same boundary conditions? This research seeks to achieve its aims
through making a comparative qualitative study. Certain pre-selections were performed in
advance of conducting Finite element analysis and the comparison process to ensure that
results would reflect only the most relevant and meaningful differences and similarities
between the both FE-codes. Five different 3D solid models have been selected to perform
linear static Finite element analysis on. All these models (case studies) are created in
CATIA V5 and the linear static analysis conducted on using FE-codes CATIA v5 and
ABAQUS 6.7-3. Three static responses (results) of the linear static analysis have been
adopted as criteria for comparisons purposes. These criteria were: (1) displacements, (2)
Von Mises stress, and (3) principal stress. The results of comparisons showed that there is
a very good agreement in most cases and small gap between in a few cases. Results of
this study demonstrate that the both FE-programs CATIA v5 and ABAQUS 6.7-3 have
good capabilities to perform FE-analysis and they give very near results. Reason behind
differences is that each of them uses a different algorithm for solving problems. The final
answer for the research question is given with valuable recommendations for future work
in the scope of this research.
Verde, Marina. "Grounds for Implementation of Solid Mechanics Calculations in an Existing Cad Programme." Thesis, Linköping University, Department of Management and Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9186.
Full textThis thesis is intended to be a ground for the implementing of solid mechanics calculations of an expander axle in an existing CAD programme. The main parameters to be calculated are: effective stress, stress components in axial and radial direction, shear stress as well as maximum force and fatigue analysis. In order to achieve the above mentioned goal, calculations were made by hand. At the end of any of the chapters, a diagram on the input/output data and the equations needed for performing the calculations was drawn.
Andrade, Gilberto Pimenta de. "EAD via Internet para CAD : aprendizagem colaborativa x comportamental." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257948.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil
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Resumo: A necessidade de treinamento contínuo em ferramentas computacionais é evidente, tanto na Engenharia Civil quanto na Arquitetura e Urbanismo, principalmente quando se faz uso de projeto assistido por computador (CAD - Computed Aided Design). Uma resposta para esta necessidade pode ser encontrada por meio da educação a distância (EAD), atualmente revalorizado com a utilização da World Wide Web (WWW). Desta forma, o objetivo deste trabalho é avaliar as condições de execução de um curso a distância, via Internet, para profissionais de engenharia civil desejando-se verificar qual a abordagem de aprendizagem mais apropriada: Comportamental ou Colaborativa. Foram oferecidos e avaliados dois cursos de conteúdo idênticos, entretanto ministrados de forma diferenciada, segundo abordagens em estudo. O tema dos cursos foi a modelagem de sólidos da ferramenta computacional AutoCAD Architectural Desktop. Utilizou-se o ambiente de EAD WebCT - www.webct.com.br. A abordagem Comportamental apresentou melhores resultados de aprendizagem para treinamentos de sistemas gráficos do tipo CAD, via Internet
Abstract: The necessity of continuous training in computer tools is evident in Civil Engineering as in Architecture, especially when Computer Aided Design (CAD) is used. An answer for such a need can be found in distance education, which now a days has gained value with the mediation of the World Wide Web (WWW). Therefore, the objective of this work is to evaluated the execution conditions and the most appropriated teaching method in a distance education course, using the Internet, for professionals in civil engineering. Two teaching methods were verified: behavioral and collaborative. Two courses with the same content were offered with variations of the teaching methods in study in the form of student-teacher and student-student interaction and assignment execution. The selected theme of the courses was solid modeling in the CAD system AutoCAD Architectural Desktop. The distance education WWW environment WebCT (www.webct.com.br) was used. The behavioral teaching method presented better learning results for Internet mediated CAD training
Mestrado
Edificações
Mestre em Engenharia Civil
Lucca, Rinaldo Tessuti de. "Avaliação de programas CADD no setor de projeto arquitetônico: etapas legais de projeto." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18131/tde-28082003-100143/.
Full textTo choose the CAD/CADD softwares is one of the gratest dificult that architects hava nodaways. The brazilian architects use these softwares since the 80's, but in the begginings the draws was a crafmanship because the real use of the software was still obscure. Decide for a software, its the real problem that architects have to face. Which one to use, how and way. This process is lone, hard and sometimes expensive. How to introduce the tecnology, analysing the evaluation that have been done about the architecture softwares of CADD and also identify the process, point the basic needs in an architect design is what this master science is about.
Vejtasa, Vladimír. "Aplikace dílenského programování a moderní CAD/CAM technologie pro návrh a výrobu držáku a excentru diferenciálu vozu Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231702.
Full textBargalló, Castelló Xavier. "Introducción del CAD (computer-aided detection) en un programa de detección precoz de cáncer de mama." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/663832.
Full textHYPOTHESIS: The double reading protocol can be replaced by a single reading plus CAD protocol in a breast cancer screening program. AIMS: a- To determine CAD performance with full-field digital mammography (FFDM) in pT1a-b breast cancers b- To determine the performance of our screening program by reading mammograms with a new protocol (single reading by a selected radiologist plus CAD) compared to a historical period of double reading plus arbitration. METHODS: 1- Sixty-eight screening-detected invasive breast cancers less than or equal to 1 cm were retrospectively studied. Radiological characteristics of lesions following BI-RADS descriptors were recorded and compared with CAD sensitivity. 2-Data from 21,321 consecutive screening mammograms in incident rounds (2010–2012) were read following a new protocol consisting of a single reading plus CAD and compared with data from 47,462 consecutive screening mammograms in incident rounds (2004–2010) that were interpreted following a double reading plus arbitration protocol. For the single reading protocol, radiologists were selected on the basis of the appraisement of their previous performance (cancer detection rate > 4.4 ‰ and recall rate: 5-10 %). RESULTS: 1- CAD showed an overall sensitivity of 86.7 % (masses, 86.5 %; calcifications, 100 %; masses with calcifications, 100 %; and architectural distortion, 57.14 %), CAD failed to detect 9 out of 68 cases. Fifteen out of 37 masses were hyperdense, and all of them were detected by CAD. No association was seen among mass morphology or margins and detectability. Per-study specificity and CAD false positive rate was 26 % and 1.76 false marks per study. 2- Period 2010–2012 vs. period 2004–2010: Cancer detection rate (CDR): 6.1‰ (95% CI: 5.1–7.2) vs. 5.25‰; Recall rate (RR): 7.02% (95% CI: 6.7–7.4) vs. 7.24% (selected readers before arbitration) and vs. 3.94 (all readers after arbitration); Specialized breast radiologists performed better than general radiologists. CONCLUSIONS: 1- CAD shows a high sensitivity and a low specificity which is its main drawback. Mammographic features and lesion density influence CAD sensitivity. 2- The CDR of the screening program improved using a single reading protocol by experienced radiologists assisted by CAD, at the cost of a moderate increase of the recall rate mainly related to the lack of arbitration.
Zhang, Yunfeng. "The automation of process planning from the CAD product model to NC programs for rotational parts." Thesis, University of Bath, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292628.
Full textGonçalves, Marco Aurélio da Fontoura. "Geração de programas CNC através da implementação de funções direcionadas às características do processo produtivo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/79836.
Full textThis study describes a methodology for the generation of CNC programs to optimize a productive system. Regarding geometrical information, the system is characterized by the use of machining cycles that the machine tool control provides because a allows the application of cycles developed with parameterized programming and by generation of new cycles, through a generic language, proposed in this study on a parameterized programming editor. As for technological data, i.e. the machining conditions set out in the programming code, the system allows the optimization of cutting parameters through a data base with information fed back with results of production. The feasibility analysis of the proposed methodology is accomplished through the implementation of a prototype of a system dedicated to programming CNC lathes. The prototype consists of computer applications developed and oriented to the optimization of the production system. The methodology for the generation of CAD/CAM functions has been implemented and tested showing effective results. The prototype implemented as an integrated set of applicative tools is of easy operation and use connecting all designed modules.
Jain, Vikesh. "A platform independent process data exchange mechanism between Java applications and computer aided manufacturing systems." Ohio : Ohio University, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1081784819.
Full textAL, SENAIDI YAQOOB SALIM. "EVALUATION OF THE ENGLISH AND MATHEMATICS COMPONENTSOF THE GENERAL FOUNDATION PROGRAM (GFP): OMANI UNIVERSITY STUDENTS’ LEARNING SATISFACTION OUTCOMES." Kent State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=kent157608179817989.
Full textSouza, Mauricio Guilherme Quilez. "Automação e integração CAD/CAE no projeto de estruturas metalicas, utilizando perfis tubulares." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257809.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: Este trabalho tem como objetivo o desenvolvimento de códigos de computador que têm a finalidade de automatizar as etapas principais de um projeto de estruturas metálicas através das linguagens AutoLISP e Delphi5. Os projetos de estruturas metálicas em estudo são os de coberturas com treliças planas constituídas de barras com perfis tubulares laminados sem costuras e seus contraventamentos. Estes perfis tubulares, ainda pouco utilizados em estruturas planas no Brasil, vêm sendo disseminados através do uso de programas que ajudam os engenheiros a utilizá-los adequadamente em seus projetos tendo em vista que resultam em estruturas mais leves e de fácil fabricação. Desta forma, houve a necessidade de desenvolver um sistema CAD/CAE, para automatizar a geração das geometrias das estruturas planas, além das representações gráficas do sistema geral tridimensional de contraventamentos da estrutura - CAD; exportar os dados para um programa integrado que realiza um processo otimizado de toda a análise estrutural e dimensionamento - CAE e, finalmente, retornar os dados processados para o ambiente CAD, para realizar o detalhamento automático das ligações da estrutura treliçada analisada. Todos os procedimentos adotados para automação dos projetos seguem recomendações de normas técnicas brasileiras principalmente a NBR8800/1986
Abstract: This work has as objective to show a software that have the goal to automate the main stages of a steel structural design, using AutoLISP and Delphi5 languages. The steel structural designs in case are the roofs formed by plane trusses made by hollow sections frames. These hollow steel sections, which are not highly used in plane structures in Brazil, are being disseminated by the use of softwares that help civil engineers to use them correctly in their designs, in view of that they result in less weighted and easy manufactured structures. So, there is the necessity to develop a CAD/CAE system, that will automate the generation of the geometries from plane structures and the graphical designs from the three-dimentional general system - CAD; also, we have the necessity to export the data to an integrated computer program that executes an optimized process from the entire structural analysis and design - CAE; and, finaly, to return the proceeded data back to CAD environment, to draw the automatic details from the connections of the analyzed structure. All the procedures and methods used to automate the design follows the specifications of Brazilian Design Codes, mainly the NBR-8800/1986
Mestrado
Estruturas
Mestre em Engenharia Civil
Gren, Pierre. "Uppskärningsmaskin : Underlag till CE-märkning." Thesis, Växjö University, School of Technology and Design, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2289.
Full textAbstract (in English)
The work that lead to a CE- marking and the creation of a total drawing foundation on an existing machine carried out on the company Polytec Composites Sweden AB in Ljungby. The company have design an machine that exist in six example that runs in the production. To be able to use the machine the company have to work out a CE-marking. The process that summed up all the document that needs for the machine to make a CE-marking. The documentation includes a total drawing over the machine and a risk analysis performed by a group employers on the company. The computer program that i used to make the drawings is Catia V5. The work that the company and the student performed ended up in a CE-marking of the machine.
Sammanfattning (på svenska)
Arbetet med att CE-märka och skapa ett ritningsunderlag på en befintlig maskin genomfördes på företaget Polytec Composites Sweden AB i Ljungby. Företaget har konstruerat och tagit fram en maskin som finns i 6st exemplar och som används i produktionen. För att få använda maskinerna så behövdes en CE-märkning så att maskinerna är godkända för att användas.
Processen där sammanställning av dokumentation på en maskin som ska CE-märkas utfördes. Underlaget innefattar bland annat material så som komplett ritningsunderlag och en riskanalys, utförd av studenten och en grupp personer från företaget. CAD programmet som jag använde mig av för att framställa ritningarna heter Catia V5. Arbetet resulterade i en CE-märkning som företaget utförde tillsammans med mig och mitt examensarbete.
Huerto, Bujaico Hebert Oswaldo. "Estudio del flujo en un tanque agitador vertical de impulsor PTB con superficie libre mediante el programa ANSYS CFX V.14.0." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2013. http://tesis.pucp.edu.pe/repositorio/handle/123456789/5059.
Full textTesis
Minary, Laetitia. "Tabado : évaluation d'un programme d'aide au sevrage TABagique pour les ADOlescents en centres de formation des apprentis (CFA)." Thesis, Nancy 1, 2011. http://www.theses.fr/2011NAN10009/document.
Full textContext - Most smokers start smoking during adolescence and became smoking dependent before the age of 20. Efforts to fight against smoking in the teenage population have focused largely on programs to prevent rather than quit smoking. On this basis, we implemented an original approach of help to smoking cessation based on a nearness offer associating pharmacologic and cognitive-behavioural strategy with. In a perspective of reducing social health inequalities, we wanted to focus our efforts on a particularly vulnerable population usually not sought, the apprentices. Before expanding such programs, their efficacy must be assessed.Objective- 1) describe the characteristics of smoking in a socially disadvantaged population, the apprentices 2) then highlight the determinants of tobacco addiction in this population 3) and finally meet the main objective which is the evaluation of the effectiveness of offering a smoking cessation program in this population. Method - This quasi-experimental, prospective, comparative study was conducted during two years ofvocational training. The population was composed of all the students from eight VTC (Vocational Training Center) in Lorraine (France). The intervention group (3 CFA) has benefited from the TABADO program, and the control group (5 CFA) received no specific intervention other than educational services generally available. Results - Among the 1,814 students included (770 in the intervention group, 1044 in the control group), 52.0 % were smokers among whom 89.4 % daily smokers, and 5.7 % were ex-smokers. The average age of tobacco use initiation was 12.1 years (SD=2.1) and the average age at inception of regular cigarette smoking was 13.8 years (SD=1.6). Current consumption of the smokers was 12.8 cigarettes per day (SD = 7.8). The average score of smoking addiction was 6.1 (SD = 2.8), according to the Hooked On Nicotine Checklist test (score from 0 to 10 = strongly dependent). Factors significantly associated with dependence were female gender, daily cigarette use, high mean daily cigarette use, co-consumption of cannabis, a smoking environment and a high score of perceived vulnerability. Factors perceived as leading to smoking (automatic gesture, combating stress and supporting morale) were also dependence factors. Of 584 original smokers at 12-month follow-up, 17% in the intervention group were abstinent vs. 11.9% in the control group (univariate p=0.08; adjusted p=0.008; odds ratio [OR] 2.1; 95% confidence interval [CI] 1.2-3.6). Conclusions - Our study has produced original data on the effectiveness of a smoking cessation in a socially disadvantaged young people who had hardly been investigated so far. The combination of proximity to the action of information and psychological support, and an offer of free nicotine replacement therapy seems to be a prerequisite for success. The demonstration effect of a group should allow the future to develop programs that facilitate this effect of social networks
Narayanan, Parasuram. "An object-oriented framework for the creation of customized expert system for CAD." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040418/.
Full textAdda, Myriam. "Photométrie CCD de très haute précision dans l'espace : application au programme de sismologie stellaire de la mission spatiale CoRoT." Paris 6, 2000. http://www.theses.fr/2000PA066001.
Full textTrunda, Jiří. "Technologie výroby frézováním na CNC strojích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228382.
Full textIverson, Susan Van Deventer. "A Policy Discourse Analysis of U.S. Land-grant University Diversity Action Plans." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/theses.asp?highlight=1&Cmd=abstract&ID=EDU2008-003.
Full textBazo, Hernández Leticia. "Evaluación del proceso de implantación del modelo “Neonatal Individualized Developmental Care and Assessment Program” (NIDCAP) de Cuidados Centrados en el Desarrollo Neonatal y atención a la Familia (CCD) en España." Doctoral thesis, Universitat Rovira i Virgili, 2016. http://hdl.handle.net/10803/399668.
Full textJustification: In Spain, the vast majority of neonatal units are already working through the philosophy of Centered Care Development (CCD) and two of them have become model training centers of the Newborn Individualized Developmental Care and Assessment Program (NIDCAP). The transfer of the introduction process and implementation of NIDCAP in the two pioneer units, can be used as an example and motivation other neonatal units. The CO-NÈIXER project is a training program based in integrative care methodology which has eased the implementation of these care models at Vall d'Hebron Hospital. Its evaluation has allowed other units to get to know its effectiveness, strengths and weaknesses and other aspects to consider if they want to implement a similar program in other units. implementation. Objectives: To analyse and describe the implementation process and implementation of the CCD and NIDCAP in Spain. Toevaluate the effectiveness of CO-NÈIXER Project. Methodology: This research is composed by two main studies, study I: "Implementation of CCD and NICAP" and study II, "Project CO-NÈIXER". Study I: 1-Literature review. 2- Descriptive, observational and longitudinal study. 3-Analysis and mapping Spanish neonatology units. 4-Study I: descriptive observational and cross-sectional study to determine the degree of implementation of CCD and NIDCAP in Spain. Study II: CO-NÈIXER Project: Prospective intervention study (before and after) where are rated satisfaction on the training program, acquired knowledge and its impact on clinical practice. Results: The CCD are applied in most neonatal units, highlighting the early involvement of parents in 96.6 % , the units are open units 24 hours in 83.1 % of these cases and 92.1 % use sucrose as a non pharmacological method for pain control but there remains other measures to implement care. In relation to the model NIDCAP, there are currently two centers accredited as training centers,34 accredited professionals and 21 professionals in training NIDCAP. Most of them belonging to the staff of the training centers. One of them has two nurses working exclusively on the implementation of this model of care. 185 have been identified and neonatology units NIDCAP only being applied, and in a limited way, in two of them. The CO-NÈIXER project has been effective, professionals have presen
Ramos, Mayara. "Testes de usabilidade para idosos : aplicação de Digital Human Modeling (DHM) em softwares CAD/CAE." Universidade do Estado de Santa Catarina, 2014. http://tede.udesc.br/handle/handle/2020.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
The present research presents the problem related to the aging population of the world and the necessary improvement on product development to better serve these users considering their limitations that come with the aging process; one of the possible improvements is the inclusion of these user on usability testing. This inclusion can be made with low cost and without exposing the user through virtual testing, which is where the problem of this research focuses, if is possible to to perform these usability tests entirely in SolidWorks® platform. The objective of this research is to develop a procedure for virtual usability testing in SolidWorks® software, with focus on elderly users. To achive the corroboration of the hypothesis (is possible to do virtual usability testing through the software plataform), was reproduced the traditional usability test of a remote control conducted with elder users in a virtual usability test on the SolidWorks® plataform, the modeled user presented limitations based on the users participants of the traditional testing, enabling the comparison of the found results of the tests. On the usability tests were evaluated the performance metrics of task success and number of positioning of the remote control were necessary to complete the task. By the test results we were able to realize that the variable of number of positions necessary to complete the task is more appropriate to evaluate the similarity between the results of real and virtual tests. The result of the statistic test for this metric indicated that there are significant differences between the results of the traditional test and the results of the virtual test, but when evaluated only the results of females elders the results showed no significant differences. It was concluded that further research is necessary to achieve corroboration of the hypothesis, considering that the results indicated significant differences between the results. The fact that the group of female older users have shown similar results, indicating that with improvements in usability testing procedure in SolidWorks® platform can achieve similar results for older users of both genders.
O presente trabalho apresenta problemática relacionada ao cenário mundial do envelhecimento da população e as melhorias necessárias no desenvolvimento dos produtos para melhor atender esses usuários considerando as limitações que são desenvolvidas no envelhecimento; uma dessas melhorias é a inclusão desse usuário nos testes de usabilidade. Essa inclusão pode ser feita com custo baixo e sem expor o usuário por meio de testes virtuais, que é onde se apresenta o problema dessa pesquisa: se é possível realizar esses testes de usabilidade inteiramente na plataforma do SolidWorks®? O objetivo desta pesquisa é desenvolver um procedimento para testes de usabilidade virtuais realizados no software SolidWorks®, com foco nos usuários idosos. Para procurar a corroboração da hipótese (de que seria possível realizar testes de usabilidade digitalmente nesta plataforma), foi reproduzido o teste de usabilidade tradicional de um controle remoto realizado com usuários idosos em um teste de usabilidade virtual na plataforma do SolidWorks®, em que o usuário modelado apresentou limitações baseadas nas dos usuários participantes do teste tradicional, podendo assim, comparar os resultados encontrados nos testes. No teste de usabilidade foram avaliadas as medidas de desempenho, sucesso de realização da tarefa e número de reposicionamentos do controle remoto necessários para realizar a tarefa. Pelos resultados dos testes pode se perceber que a variável de número de reposicionamentos para realizar a tarefa é a mais adequada para avaliar a similaridade entre os resultados dos testes real e virtual. O resultado do teste estatístico dessa variável indicou que existem diferenças significativas entre os resultados encontrados do teste tradicional e os resultados do teste virtual, mas quando avaliado apenas os resultados dos indivíduos idosos do sexo feminino os resultados não apresentaram diferenças significativas. Foi concluído que ainda são necessárias pesquisas para se atingir a corroboração da hipótese, considerando que os resultados indicaram para diferenças significativas entre os resultados. O fato do grupo de usuárias idosas ter apresentado resultados similares, indica que com melhorias no procedimento de testes de usabilidade na plataforma do SolidWorks® pode-se conseguir resultados similares para usuários de idosos de ambos os gêneros.
Morgan, Jaqueline. "Perturbações e modos quasenormais de buracos negros AdS." reponame:Repositório Institucional da UFABC, 2011.
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