The Experts below are selected from a list of 7797 Experts worldwide ranked by ideXlab platform
Valentine P Ananikov - One of the best experts on this subject based on the ideXlab platform.
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improvement of quality of 3d printed objects by elimination of microscopic structural defects in fused deposition modeling
PLOS ONE, 2018Co-Authors: Evgeniy G Gordeev, Alexey S Galushko, Valentine P AnanikovAbstract:Additive manufacturing with fused deposition modeling (FDM) is currently optimized for a wide range of research and commercial applications. The major disadvantage of FDM-created products is their low quality and structural defects (porosity), which impose an obstacle to utilizing them in Functional Prototyping and direct digital manufacturing of objects intended to contact with gases and liquids. This article describes a simple and efficient approach for assessing the quality of 3D printed objects. Using this approach it was shown that the wall permeability of a printed object depends on its geometric shape and is gradually reduced in a following series: cylinder > cube > pyramid > sphere > cone. Filament feed rate, wall geometry and G-code-defined wall structure were found as primary parameters that influence the quality of 3D-printed products. Optimization of these parameters led to an overall increase in quality and improvement of sealing properties. It was demonstrated that high quality of 3D printed objects can be achieved using routinely available printers and standard filaments.
Reinhold Plosch - One of the best experts on this subject based on the ideXlab platform.
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tool support for design by contract
Technology of Object-Oriented Languages and Systems, 1998Co-Authors: Reinhold PloschAbstract:Numerous experience reports indicate that Prototyping is a serious and successful development strategy. The author believes that it is not sufficient to provide graphical notations for object-oriented analysis, but that the notation of contracts in conjunction with Prototyping i.e., building executable models, is the proper technique for mastering complexity and gaining insights into a problem domain. He therefore developed a set of tools that is especially suitable for Functional Prototyping and for architectural Prototyping. The underlying Prototyping model is based on object orientation and assertions. The infrastructure tools are implemented with the object-oriented programming language, Python, while the high-level tools (assertion browser and graphically oriented debugger for assertions) are implemented in C++. The two parts of the system are tightly connected by means of the API provided by Python. Although the tool support provided covers the core tasks for Functional Prototyping and for architecture Prototyping, additional support for evolutionary software development and for higher level techniques for requirements elicitation, e.g., for scenario oriented (use case oriented) analysis is desired.
Evgeniy G Gordeev - One of the best experts on this subject based on the ideXlab platform.
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improvement of quality of 3d printed objects by elimination of microscopic structural defects in fused deposition modeling
PLOS ONE, 2018Co-Authors: Evgeniy G Gordeev, Alexey S Galushko, Valentine P AnanikovAbstract:Additive manufacturing with fused deposition modeling (FDM) is currently optimized for a wide range of research and commercial applications. The major disadvantage of FDM-created products is their low quality and structural defects (porosity), which impose an obstacle to utilizing them in Functional Prototyping and direct digital manufacturing of objects intended to contact with gases and liquids. This article describes a simple and efficient approach for assessing the quality of 3D printed objects. Using this approach it was shown that the wall permeability of a printed object depends on its geometric shape and is gradually reduced in a following series: cylinder > cube > pyramid > sphere > cone. Filament feed rate, wall geometry and G-code-defined wall structure were found as primary parameters that influence the quality of 3D-printed products. Optimization of these parameters led to an overall increase in quality and improvement of sealing properties. It was demonstrated that high quality of 3D printed objects can be achieved using routinely available printers and standard filaments.
Alexey S Galushko - One of the best experts on this subject based on the ideXlab platform.
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improvement of quality of 3d printed objects by elimination of microscopic structural defects in fused deposition modeling
PLOS ONE, 2018Co-Authors: Evgeniy G Gordeev, Alexey S Galushko, Valentine P AnanikovAbstract:Additive manufacturing with fused deposition modeling (FDM) is currently optimized for a wide range of research and commercial applications. The major disadvantage of FDM-created products is their low quality and structural defects (porosity), which impose an obstacle to utilizing them in Functional Prototyping and direct digital manufacturing of objects intended to contact with gases and liquids. This article describes a simple and efficient approach for assessing the quality of 3D printed objects. Using this approach it was shown that the wall permeability of a printed object depends on its geometric shape and is gradually reduced in a following series: cylinder > cube > pyramid > sphere > cone. Filament feed rate, wall geometry and G-code-defined wall structure were found as primary parameters that influence the quality of 3D-printed products. Optimization of these parameters led to an overall increase in quality and improvement of sealing properties. It was demonstrated that high quality of 3D printed objects can be achieved using routinely available printers and standard filaments.
Ushco Quishpe, Fabián Rigoberto - One of the best experts on this subject based on the ideXlab platform.
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Diseño multimedia informativo para dar a conocer las especies de aves en peligro de extinción de la Zona 3.
Ecuador: Latacunga: Universidad Técnica de Cotopaxi: Facultad de Ciencias de la Ingeniería y Aplicadas, 2019Co-Authors: Jerez Faubla, Cristian Reinaldo, Ushco Quishpe, Fabián RigobertoAbstract:Digital communication such as video, web and apps to know about endangered bird species at Zone 3 in the National Parks and Ecological Reserves of Cotopaxi, Tungurahua, Chimborazo and Pastaza are scarce. Therefore, it was necessary to carry out an interactive multimedia product by using Card sorting techniques and User-Centered Design processes, to obtain as a result a Functional prototype. The research techniques and analysis of illustrations, created as graphic editorial material collected content of the following birds: Andean condor, curiquingue, red macaw, quilico (Falco sparverius) and red bird. Technical information was also obtained from the processes and phases of the vector illustration so creative each feature and morphological characteristics of these species, which are ideal as digital content for having a realistic and detailed style. The themes that are included in the proposal of Functional Prototyping are; App starting icon, Primary navigation menu, birds, risks, glossary, gallery, camera, in the bird icon there is important information such as the scientific name of the species, vulnerability, feeding, geographical location and physical characteristics. This study was achieved through exploratory research, the qualitative one through interviews and the quantitative one through surveys. The methodology of the User-Centered Design proposed by Jakob Nielsen was used, which is based on the construction of a low-fidelity prototype through phases, establishing the creative process and the heuristic evaluation phases. The impacts of the project are: Environmental by generating resources that transmit digital information about the care of these species. Social: due to the research links the inhabitants of the sector as direct beneficiaries. Cultural: as an endorsement of the conservation and promotion of environmental diversity. Technological: because it is a useful research tool in the exemplification and application of methods for the construction of interactive multimedia products. As a final result of the research study, the Functional prototype of the application constituted in a detailed Prototyping of each bird, being a digital information tool where Functional Prototyping was the focus of the product, which attracted public attention.La comunicación digital como el video, web y aplicaciones para conocer sobre las especies de aves en peligro de extinción de la Zona 3 en los Parques Nacionales y Reservas Ecológicas de Cotopaxi, Tungurahua, Chimborazo y Pastaza son escasas, por tanto, fue necesario realizar un producto multimedia interactivo utilizando técnicas de Cardsorting y procesos de Diseños Centrado en el Usuario, para obtener como resultado un prototipo funcional. Las técnicas de investigación análisis de las ilustraciones, creadas como material editorial gráfico recolectaron contenido de las siguientes aves: cóndor andino, curiquingue, guacamayo rojo, quilico y pájaro rojo, también se obtuvo información técnica de los procesos y faces de la ilustración vectorial de manera creativa cada rasgo y características morfológica de estas especies, las mismas que son ideales como contenido digital por contar con un estilo realista y detallado. Las temáticas que se encuentran incluidas en la propuesta del prototipado funcional son; icono de inicio de App, Menú principal de navegación inicio, aves, riesgos, glosario, galería, cámara, en el icono aves existe información importante como el nombre científico de la especie, vulnerabilidad, alimentación, ubicación geográfica y características físicas. Esto se logró mediante la investigación exploratoria, tanto la cualitativa por medio de entrevistas como la cuantitativa en las encuestas. Se utilizó la metodología del Diseño Centrado en el Usuario propuesta por Jakob Nielsen que se basa en la construcción de un prototipo de baja fidelidad por medio de fases estableciendo el proceso creativo y las fases de evaluación heurística. Los impactos del proyecto son: ambiental; al generar recursos que trasmitan información digital sobre el cuidado de estas especies. Social debido a que la investigación vincula como beneficiarios directos los habitantes del sector. Cultural, como un respaldo de la conservación y promoción de la diversidad ambiental. Tecnológicos al ser un instrumento de investigación útil en la ejemplificación y aplicación de métodos para la construcción de productos multimedia interactivos. Como resultado final de la investigación el prototipo funcional de la aplicación se constituyó en un prototipado detallado de cada ave, siendo una herramienta de información digital donde el prototipado funcional fue el foco del producto, lo cual atrajo la atención del público
