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[EN] A very flexible and efficient computer-aided design (CAD) tool, specifically suited for advanced comb-line rectangular waveguide filters, is presented in this work. The developed software tool, which makes use of a full-wave analysis technique based on the Boundary Integral-Resonant Mode Expansion method, allows loading the considered comb-line resonators with any number of radially symmetrical partial-height metallic posts. The implemented CAD tool also allows dealing with coupling windows of arbitrary cross-section, thus drastically enhancing the flexibility of the CAD process. The excitation of the analyzed components, which is performed using generalized coaxial probes, has also been integrated in the implemented software tool, thus achieving a full-wave electromagnetic characterization of the whole component. Furthermore, a novel simple procedure to efficiently connect all the obtained wide-band matrices is proposed. To validate the accuracy and efficiency of this novel CAD tool, several new designs concerning advanced band-pass comb-line waveguide filters are presented. The accuracy of the developed CAD tool has been successfully validated by comparing the obtained results with numerical data provided by a commercial tool based on the finite-element method. (C) 2015 Wiley Periodicals, Inc. ; This work has been supported by the Ministerio de Economia y Competitividad, Spanish Government, under the Research Projects TEC2013-47037-C5-1-R and TEC2013-47037-C5-4-R, as well as by the FP7 PCIG11-2012-322162 Marie Curie CIG grant. ; San Blas Oltra, ÁA.; Vidal Pantaleoni, A.; Müller, A.; Soto Pacheco, P.; Mira Pérez, FE.; Pérez Soler, FJ.; Gimeno Martinez, B. (2015). Flexible and Efficient Computer-Aided Design (CAD) Tool for Advanced Comb-Line Rectangular Waveguide Filters. International Journal of RF and Microwave Computer-Aided Engineering. 25(8):696-708. https://doi.org/10.1002/mmce.20908 ; S ; 696 ; 708 ; 25 ; 8

Kale, Serdar (Balıkesir Author) ; Computer aided design (CAD) technology is one of the most influential information technology (IT) innovations of the last four decades. This paper studies the factors that influence the spread of this important IT innovation in the context of the Turkish architectural design practice. It builds on the innovation diffusion theory which proposes that internal (i.e., copying behaviors of others) and external influence (i.e., complying with clients' requirements, changes in government regulations, demand conditions, and consulting firms' suggestions) factors drive diffusion of an innovation. The paper empirically tests the propositions of innovation diffusion theory by using three mathematical models: The internal influence model, the external influence model, and the mixed influence model. Research findings point out that the mixed influence model has the highest exploratory power. They show that the diffusion of CAD technology in architectural design practice is primarily driven by internal rather than external influence factors. This study is of importance to researchers because this is the first application of the influence models to the study of the diffusion of CAD technology in architectural design practice. It is also of relevance to design practitioners since the findings should provide a useful guide in their decision to adopt or not to adopt CAD technology.

This paper presents a study of the Computer Aided Design (CAD) needs for the Facilities Engineering Division (PENGD) of NASA Langley Research Center. PENGD currently has many more projects than resources. Government cuts and reductions in personnel promise to make the situation worse. PENGD needs to increase the throughput of its existing staff while also decreasing the product cycle of a project. The existing design scenario with PC based CAD is used as a baseline to evaluate possible improvements and cost savings by implementing workstation based CAD with feature-based solid modeling. A detailed case study is used to illustrate and compare the differences in designing with AutoCAD1 and ProlEngineer. Equivalent hourly engineering rates are calculated for each system based on a four year life cycle. The results of the case study and engineering rates are used to determine the actual cost of designing with both CAD systems. A cost-benefit analysis is used to determine the cost effectiveness of continued use of PC based CAD with complex design projects versus the purchase and integration of workstation based CAD. My findings conclude that projects with any degree of uncertainty benefit from workstation based CAD. Solid modeling provides a mechanism for thorough study which reduces modifications, rework, and schedule delays. The associative database greatly reduces the amount of time required to create and update drawings. As uncertainty increases, the savings from using workstation based CAD over PC based CAD also increases. ; Master of Engineering

This paper will explore how Computer Aided Design and Manufacturing (CAD/CAM) can be ethically merged with Northwest Coast Sculpture Manufacturing. Additional emphasis will be focused on resolving issues encountered while Integrating CAD/CAM technology with Native Design. The basics of digitizing designs through various scanning techniques, such as the point probe and point cloud method will be discussed along with obstacles encountered during the scanning of existing sculptures. Several approaches to computer modeling will be outlines focusing on MasterCAM's Surface, Solid, and Art modeling features, as well as Zbrush's organic tool-based digital sculpting program. The issues of integrating these technologies with Indigenous Northwest Coast design will be sewn through this discussion. The paper will further elaborate on the market potential of sculpted cultural wood products, along with resulting intellectual property issues, focusing on current legislative protection and areas of interest for artists pursuing computer aided manufacturing of their designs. Finally, a case study will be presented discussing ways in which Native communities, such as the Nisga'a Village of Laxgalts'asp, might benefit from CAD/CAM manufacturing. Furthermore it explores the computer aided manufacturing of a specific Northwest Coast design in wood. From this inquiry, directions forward are highlighted, focusing on how the Native Community might approach the issue of integrating this growing technology with existing design capabilities in a modern cultural context. ; Forestry, Faculty of ; Unreviewed ; Undergraduate

© 2018 IEEE. Personal use of this material is permitted. Permissíon from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertisíng or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. ; [EN] The objective of this paper is to use electromagnetic-based computer-aided design (CAD) tools to investigate the maximum tuning range of channel filters, typically used in satellite payloads. Both circular and rectangular waveguide technologies are investigated. The results of the investigation show that single-mode rectangular waveguide implementations offer substantially wider tuning range, as opposed to classical dual-mode circular waveguide implementations. In addition to simulations, measurements are also presented indicating very good agreement with theory, thereby fully validating the CAD procedure. ; This work was supported in part by MINECO (Spanish Government) under Research and Development Project TEC2016-75934-C4-1-R and in part by Research and Development Technicians under Grant PTA2015-10839-I. ; Ossorio-García, J.; Vague Cardona, JJ.; Boria Esbert, VE.; Guglielmi, M. (2018). Exploring the Tuning Range of Channel Filters for Satellite Applications Using Electromagnetic-Based Computer Aided Design Tools. IEEE Transactions on Microwave Theory and Techniques. 66(2):717-725. https://doi.org/10.1109/TMTT.2017.2769083 ; S ; 717 ; 725 ; 66 ; 2

Computing has become an integral part of an engineering education. From the moment a student arrives on the University of Wisconsin—Madison campus, until graduation with advanced degrees, the educational program provides convenient access to appropriate computing facilities to enhance a student's experience and expand learning opportunities. If engineering education is to contribute to future industrial growth and economic recovery, graduates must be well grounded in the principles and techniques of computer aided engineering in research, design, and manufacturing.

The visual representation of a product and the role of visualization have recently become a central issue in design research. By enhancing a real scene with computer generated objects, Augmented Reality (AR), has proven itself as a valuable Human-Computer Interface (HCI) in numerous application areas such as medical, military, entertainment and manufacturing. Also AR has potentials in design because the current interface provided by Computer-Aided Design (CAD) packages is less intuitive and reports show that the presence of physical objects help design. In this paper we proposed approach that user can create own 3D augmented reality scenes which enables interaction between real world and virtual object at the same time. For this purpose BuildAR software is applied using marker-based camera tracking and 3D object is obtained with standard CAD system SolidWorks.