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Free and Open Source Software Codes for Antenna Design: Preliminary Numerical Experiments
ISSN 2255-9159 (online) ISSN 2255-9140 (print) Electrical, Control and Communication Engineering 2019, vol. 15, no. 2, pp. 88–95 doi: 10.2478/ecce-2019-0012 https://content.sciendo.com Free and Open Source Software Codes for Antenna Design: Preliminary Numerical Experiments Alessandro Fedeli* (Assistant Professor, University of Genoa, Genoa, Italy), Claudio Montecucco (Consultant, Atel Antennas s.r.l., Arquata Scrivia, Italy), Gian Luigi Gragnani (Associate Professor, University of Genoa, Genoa, Italy) Abstract – In both industrial and scientific frameworks, free and the natural choice when ethical concerns about science open source software codes create novel and interesting diffusion and reproducibility [2] are faced. opportunities in computational electromagnetics. One of the For these reasons, work has started, aiming to identify and possible applications, which usually requires a large set of numerical tests, is related to antenna design. Despite the well- evaluate possible open source programs that can be usefully known advantages offered by open source software, there are employed for the design of antennas and possibly other passive several critical points that restrict its practical application. First, electromagnetic devices such as, for example, filters, couplers, the knowledge of the open source programs is often limited. impedance adapters. The research also aims at finding software Second, by using open source packages it is sometimes not easy to that allows for the pre- and post-processing of data. obtain results with a high level of confidence, and to integrate open Furthermore, it has been decided to consider the possibility of source modules in the production workflow. In the paper, a discussion about open source programs for antenna design is easily integrating the design into the complete production and carried out. -
The Leader in Advanced .Dwg Technology
October 17 2017 TEIGHA® DRAWINGS The leader in advanced .dwg technology www.opendesign.com Copyright © 2017 Open Design Alliance, All Rights Reserved BACKGROUND Teigha Drawings is a stand-alone independent SDK available for developers working with the .dwg, .dxf, and .dgn file formats. It was developed by Open Design Alliance (ODA), a technology consortium that has been providing interoperability tools for the engineering software industry since 1998. BUSINESS OVERVIEW INTRODUCTION ODA has a long history of experience with the .dwg file format, dating back to 1998. Our software has kept the .dwg file format open and universally accessible for the past 20 years. Today, in addition to providing interopera- bility, we are leveraging our vast experience with .dwg to make it a tool of choice for modern application development. INDUSTRY-PROVEN TECHNOLOGY Teigha Drawings has been powering thousands of mission critical engi- neering applications for more than a decade. It is a mature, high-quality and trusted solution for building CAD applications. ACCELERATE TIME-TO-MARKET In addition to turn-key support for .dwg and .dgn files, Teigha Drawings includes components for a variety of other common engineering tasks including version control, visualization and publishing. Using Teigha Drawings as a base, you can build more sophisticated applications in less time, using fewer resources. ATTRACTIVE LICENSING Teigha Drawings is offered under a fixed fee license with no royalties for cost-effective deployment. PRODUCT PORTFOLIO SUPPORTED FILE VERSIONS .dwg/.dxf -
Professional SDK for Cloud-Based Engineering Applications
August 25 2017 TEIGHA® CLOUD Professional SDK for Cloud-Based Engineering Applications www.opendesign.com Copyright © 2017 Open Design Alliance, All Rights Reserved BACKGROUND Teigha Cloud is a framework for developing CAD applications that run in the cloud and can be accessed via the Internet. It provides a high performance economical solution for viewing CAD models in a browser. However, it is more than just a visualization system—it also supports various types of editing and general client-server application development. BUSINESS OVERVIEW INTRODUCTION Teigha Cloud is developed by Open Design Alliance, a technology consor- tium that has been providing mission critical components for the CAD industry since 1998. Web-based technologies are a part of most engineer- ing workflows today, and Teigha Cloud was developed as a solution for web-based visualization and application development. MODERN TOOLS Much of the Teigha Cloud client side is created by compiling existing Teigha C++ source code to JavaScript using Emscripten. The result is an efficient development process that intelligently leverages Teigha’s stable, mature C++ code base. COMPLEMENTARY APPROACH Unlike many cloud-based systems from other vendors, Teigha Cloud was developed to be compatible with existing Teigha technology. While the Teigha Cloud client is written in modern JavaScript, the server-side technol- ogy uses the same Teigha Kernel that is used on the desktop. INDUSTRY-PROVEN TECHNOLOGY Teigha Cloud inherits the experience and best practices of Teigha products that have been used for decades in mission critical roles across all engi- neering disciplines. ATTRACTIVE LICENSING Teigha Cloud is offered under a fixed fee license with no royalties for cost-effective deployment, including deployment of SaaS and other web-based applications. -
Installation Instructions EPLAN Education Version 2.9 Status: 05/2020
Installation Instructions EPLAN Education Version 2.9 Status: 05/2020 EPLAN Software & Service GmbH & Co. KG Technical information Installation Instructions EPLAN Education Version 2.9 Status: 05/2020 Copyright © 2019 EPLAN Software & Service GmbH & Co. KG EPLAN Software & Service GmbH & Co. KG assumes no liability for either technical or printing errors, or for deficiencies in this technical information and cannot be held liable for damages that may result directly or indirectly from the delivery, performance, and use of this material. This document contains legally protected information that is subject to copyright, trademark law, de- sign law and other legal provisions. All rights are protected. This document or parts of this document may not be copied or reproduced by any other means without the express prior consent of EPLAN Software & Service GmbH & Co. KG. The software described in this document is subject to a licensing agreement and, if applicable, other contractual provisions. The utilization and reproduction of the software are only permitted in accord- ance with the specifications of this license agreement and, if applicable, any further existing contrac- tual specifications. RITTAL® is a registered trademark of Rittal GmbH & Co. KG. EPLAN®, EPLAN Electric P8®, EPLAN Fluid®, EPLAN Preplanning®, EPLAN Pro Panel®, EPLAN Smart Wiring®, EPLAN Harness proD®, ePULSE®, eVIEW®, eBUILD, SYNGINEER and EPLAN Cogi- neer® are registered trademarks of EPLAN Software & Service GmbH & Co. KG. Windows 7®, Windows 8.1®, Windows 10®, Windows Server 2008 R2®, Windows Server 2012®, Win- dows Server 2012 R2®, Microsoft Windows®, Microsoft Office®, Microsoft® Excel®, Microsoft® Access® and Notepad® are registered trademarks of the Microsoft Corporation (in accordance with the laws of the State of Washington). -
A New Era for Mechanical CAD Time to Move Forward from Decades-Old Design JESSIE FRAZELLE
TEXT COMMIT TO 1 OF 12 memory ONLY A New Era for Mechanical CAD Time to move forward from decades-old design JESSIE FRAZELLE omputer-aided design (CAD) has been around since the 1950s. The first graphical CAD program, called Sketchpad, came out of MIT [designworldonline. com]. Since then, CAD has become essential to designing and manufacturing hardware Cproducts. Today, there are multiple types of CAD. This column focuses on mechanical CAD, used for mechanical engineering. Digging into the history of computer graphics reveals some interesting connections between the most ambitious and notorious engineers. Ivan Sutherland, who won the Turing Award for Sketchpad in 1988, had Edwin Catmull as a student. Catmull and Pat Hanrahan won the Turing award for their contributions to computer graphics in 2019. This included their work at Pixar building RenderMan [pixar. com], which was licensed to other filmmakers. This led to innovations in hardware, software, and GPUs. Without these innovators, there would be no mechanical CAD, nor would animated films be as sophisticated as they are today. There wouldn’t even be GPUs. Modeling geometries has evolved greatly over time. Solids were first modeled as wireframes by representing the object by its edges, line curves, and vertices. This evolved into surface representation using faces, surfaces, edges, and vertices. Surface representation is valuable in robot path planning as well. Wireframe and surface acmqueue |march-april 2021 5 COMMIT TO 2 OF 12 memory I representation contains only geometrical data. Today, modeling includes topological information to describe how the object is bounded and connected, and to describe its neighborhood. -
Bricscad - Unifying 2D and 3D CAD Bricscad® Is the Powerful CAD Software Platform Unifying 2D CAD and 3D Direct Modeling for .Dwg on Windows and Linux
BricsCAD - Unifying 2D and 3D CAD BricsCAD® is the powerful CAD software platform unifying 2D CAD and 3D direct modeling for .dwg on Windows and Linux. BRX LISP COM .NET Highly compatible Cloud connectivity Enabling Third Party Applications BricsCAD reads and writes the BricsCAD integrates a smart BricsCAD is the most development dwg format and offers very high connection with the cloud-based friendly CAD platform in the compatibility with AutoCAD®. Chapoo Services, offering from industry. Thanks to industry In addition, BricsCAD offers 3D casual document sharing to compatible API’s third party direct modeling in native dwg. complete project collaboration. solutions can run on BricsCAD BricsCAD, so much more than The Chapoo connection tool without modifying the source code. an alternative. automatically recognizes xrefs. With industry leading support and a compelling price, volume clients around the world rely on BricsCAD Full function dwg CAD software with advanced 2D tools 3D Direct Modeling The BricsCAD® software operates smoothly in mixed environments and users will With BricsCAD software one dwg-based CAD environment can take care of all your needs, encounter a very recognizable interface allowing for smooth co-existence or easy from simple 2D drafting to advanced 3D direct modeling. No need to buy and learn new or transitioning. The familiar UI includes consistent names for commands and variables, and companion products, no need for annoying, time consuming conversions… just one unified familiar keystrokes for shortcuts. Company standard templates, block libraries, linetypes CAD solution addressing today’s needs and allowing you to move to the world of 3D direct and fonts can be used. -
The Role of Openbim® in Better Data Exchange for AEC Project Teams the ROLE of OPENBIM® in BETTER DATA EXCHANGE for AEC PROJECT TEAMS 2
The role of openBIM® in better data exchange for AEC project teams THE ROLE OF OPENBIM® IN BETTER DATA EXCHANGE FOR AEC PROJECT TEAMS 2 Introduction Project Data File type Architectural Model RVT, RFA, SKP, 3ds The success of complex, multi-stakeholder Architecture, Engineering and Construction (AEC) projects relies on smooth Structural Model IFC, CIS/2, RVT collaboration and information sharing throughout the project lifecycle, often across different disciplines and software. The costs 3D Printing STL, OBJ of inadequate interoperability to project teams, according to one analysis of capital facilities projects in the United States, approaches CAD Data DXF, DWG, ACIS SAT 17 billion annually, affecting all project stakeholders.¹ A more recent GIS Data SHP, KMZ, WFS, GML study by FMI and Autodesk’s portfolio company Plangrid found that 52% of rework could be prevented by better data and communication, and that Civil Engineering LandXML, DWG, DGN, CityGML in an average week, construction employees spend 14 hours (around 35% of their time) looking for project data, dealing with rework and/or handling Cost Estimating XLSX, ODBC conflict resolution.² Visualisation Models FBX, SKP, NWD, RVT In the AEC industry, many hands and many tools bring building and infrastructure projects to realisation. Across architects, engineers, contractors, fabricators and Handover to Facilities Management COBie, IFC, XLSX facility managers: inadequate interoperability leads to delays and rework, with ramifications that can reverberate throughout the entirety of the project lifecycle. Scheduling Data P3, MPP Over the last two decades, a strong point of alignment in the AEC industry has been in the development and adoption of the openBIM® collaborative process Energy Analysis IFC, gbXML to improve interoperability and collaboration for building and infrastructure projects. -
GNU Libredwg for Version 0.12.4, 30 December 2020
GNU LibreDWG for version 0.12.4, 30 December 2020 GNU LibreDWG Developers and Thien-Thi Nguyen This manual is for GNU LibreDWG (version 0.12.4, 30 December 2020). Copyright c 2010-2020 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled \GNU Free Documentation License". i Table of Contents 1 Overview ::::::::::::::::::::::::::::::::::::::::: 1 1.1 API/ABI version ::::::::::::::::::::::::::::::::::::::::::::::: 1 1.2 Coverage ::::::::::::::::::::::::::::::::::::::::::::::::::::::: 1 1.3 Related projects :::::::::::::::::::::::::::::::::::::::::::::::: 3 2 Usage ::::::::::::::::::::::::::::::::::::::::::::: 5 3 Types::::::::::::::::::::::::::::::::::::::::::::: 6 4 Objects ::::::::::::::::::::::::::::::::::::::::::: 8 4.1 HEADER :::::::::::::::::::::::::::::::::::::::::::::::::::::: 8 4.2 ENTITIES :::::::::::::::::::::::::::::::::::::::::::::::::::: 22 4.3 OBJECTS :::::::::::::::::::::::::::::::::::::::::::::::::::: 92 5 Sections:::::::::::::::::::::::::::::::::::::::: 259 5.1 HEADER Section :::::::::::::::::::::::::::::::::::::::::::: 259 5.2 OBJECTS Section ::::::::::::::::::::::::::::::::::::::::::: 259 5.3 CLASSES Section :::::::::::::::::::::::::::::::::::::::::::: 259 5.4 HANDLES Section ::::::::::::::::::::::::::::::::::::::::::: -
Kustannustehokkaat Cad, Fem Ja Cam -Ohjelmat Tutkimus Saatavilla Olevista Ohjelmista Tammikuussa 2018
OULUN YLIOPISTON KERTTU SAALASTI INSTITUUTIN JULKAISUJA 6/2018 Kustannustehokkaat Cad, Fem ja Cam -ohjelmat Tutkimus saatavilla olevista ohjelmista tammikuussa 2018 Terho Iso-Junno Tulevaisuuden tuotantoteknologiat FMT-tutkimusryhmä Terho Iso-Junno KUSTANNUSTEHOKKAAT CAD, FEM JA CAM -OHJELMAT Tutkimus saatavilla olevista ohjelmista tammikuussa 2018 OULUN YLIOPISTO Kerttu Saalasti Instituutin julkaisuja Tulevaisuuden tuotantoteknologiat (FMT) -tutkimusryhmä ISBN 978-952-62-2018-5 (painettu) ISBN 978-952-62-2019-2 (elektroninen) ISSN 2489-3501 (painettu) Terho Iso-Junno Kustannustehokkaat CAD, FEM ja CAM -ohjelmat. Tutkimus saatavilla olevista ohjelmista tammikuussa 2018. Oulun yliopiston Kerttu Saalasti Instituutti, Tulevaisuuden tuotantoteknologiat (FMT) -tutkimusryhmä Oulun yliopiston Kerttu Saalasti Instituutin julkaisuja 6/2018 Nivala Tiivistelmä Nykyaikaisessa tuotteen suunnittelussa ja valmistuksessa tietokoneohjelmat ovat avainasemassa olevia työkaluja. Kaupallisten ohjelmien lisenssihinnat voivat nousta korkeiksi ja olla hankinnan esteenä etenkin aloittelevilla yrityksillä. Tässä tutkimuk- sessa on kartoitettu kustannuksiltaan edullisia CAD, FEM ja CAM -ohjelmia, joita voisi käyttää yritystoiminnassa. CAD-ohjelmien puolella perinteisille 2D CAD-ohjelmille löytyy useita hyviä vaih- toehtoja. LibreCAD ja QCAD ovat helppokäyttöisiä ohjelmia perustason piirtämiseen. Solid Edge 2D Drafting on erittäin monipuolinen täysiverinen 2D CAD, joka perustuu parametriseen piirtämiseen. 3D CAD-ohjelmien puolella tarjonta on tasoltaan vaihtelevaa. -
Reference Manual
DDVue An ActiveX OCX to view and retrieve DWG/DXF information DDVue REFERENCE MANUAL www.CADology.com (C)opyright 2006 License Agreement CADology Limited and Ultimate Software Solutions Limited designed and provides this computer OLE control - ActiveX(DDVue) and documentation as is and licenses its use. The user assumes responsibility for the choice of this program to achieve its intended results, and for the installation, use and results achieved. DDVue is not, nor has ever been, public domain or free computer software. Distribution License: Any versions of DDVue(OCX) may only be distributed with a valid Distribution License; this license is obtained on a annual basis from CADology. However, the user may distribute DDVue(OCX) with their application as long as the user is a valid Sustaining or Founder member of the Open Design Alliance. Limited Warranty: DDVue is provided without warranty of any kind. The complete risk as to the results produced by this program is assumed by purchaser/user. If the program becomes defective, the purchaser/user assumes the complete cost of all associated damages. CADology Limited or Ultimate Software Solutions Limited shall have no responsibility or liability to any person or company. The Governing Law The Governing law of this Agreement shall be that of England, UK. Acknowledgements • AutoCAD, AutoCAD 2006, AutoCAD 2005, AutoCAD 2004, AutoCAD 2002, AutoLISP, DWG and DXF are trademarks of Autodesk • Windows 98, Windows ME, Window NT, Windows 2000 and Windows XP are trademarks of Microsoft • DWGDirect and -
Bricscad for Autocad Users” Upfront.Ezine Publishing, Ltd
UPDATED FOR V17 BRICSCAD® FOR AUTOCAD® USERS Comparing User Interfaces Compatibility of Drawing Elements Customizing and Programming BricsCAD Operating Dual-CAD Design Offices Working in 3D BIM, Sheet Metal, & Communicator Payment Information This book is covered by copyright. As the owner of the copyright, upFront.eZine Publishing, Ltd. gives you permission to make one print copy. You may not make any electronic copies, and you may not claim authorship or ownership of the text or figures herein. Suggested Price US$33.40 By Email Acrobat PDF format: Allow for a 15MB download. PayPal Check or Money Order To pay by PayPal, send payment to the account We can accept checks in the following of [email protected] at https://www.paypal.com/. currencies: • US funds drawn on a bank with address in the USA. Use this easy link to pay: • Canadian funds drawn on a bank with a Canadian https://www.paypal.me/upfrontezine/33.40 address (includes GST). PayPal accepts funds in US, Euro, Yen, Make cheque payable to ‘upFront.eZine Publishing’. Canadian, and 100+ other currencies. Please mail your payment to: “BricsCAD for AutoCAD Users” upFront.eZine Publishing, Ltd. 34486 Donlyn Avenue Abbotsford BC V2S 4W7 Canada Visit the BricsCAD for AutoCAD Users Web site at http://www.worldcadaccess.com/ebooksonline/. At this Web page, edi- tions of this book are available for BricsCAD V8 through V17. Purchasing an ebook published by upFront.eZine Publishing, Ltd. entitles you to receive the upFront.eZine newsletter weekly. To subscribe to this “The Business of CAD” newsletter separately, send an email to [email protected]. -
Open Source Design Software Overview
SEGD.org Open Source Design Software prepared by Chad Eby Herron School of Art + Design at IUPUI SEGD Academic Task Force SEGD Training Module Training SEGD Introduction to EGD Overview What is Open Source? Free and open source software (sometimes called FOSS) tools are developed “in the open” so that anyone may inspect an application’s source code—the underlying set of instructions that make the application work—that is hidden by design in proprietary tools. Not only is the source code visible, it is generally permissible to use, re- distribute and modify without restriction. This makes it free (as in freedom). As a side effect, many open source software tools are also free (as in beer), meaning image credit they are usable at no cost. Photo by Marc Mueller from Pexels Open Source Design Software Overview Why Use Open Source? An open source design software tool may be attractive to individuals and organizations due to the transparent nature of its development, the lack of restrictions on distribution and use, the suitability for a niche purpose too small for commercial viability, the low cost/no cost aspect or some combination of these factors. As good as open source tools may seem at first blush, there are some caveats. FOSS projects, especially in the early stages, may have sporadic development cycles and are sometimes abandoned entirely. Even in projects that are actively developed and well established, the documentation for the tool may lag well behind the latest released version. Finally, since some FOSS tools are passion projects of individuals or small teams, the software user interface may be quite eccentric.