RAPID prototyping, INVENTORIES, SPECIFICATIONS, HEURISTIC, and SOCIAL problems
• We present simple techniques for prototyping Parallel Alternating Criteria Search (PACS) into a domain-specific parallel primal MIP heuristic. • Our approach entails specializing PACS to better adapt to the target problem structure. • We showcase its application to two classes of the Maritime Inventory Routing Problem. • We show the adapted heuristic is competitive with state-of-the-art specialized algorithms and MIP solvers. • The modular nature of PACS proves a platform for the rapid prototyping of parallel domain-specific heuristics. Parallel Alternating Criteria Search (PACS) relies on the combination of computer parallelism and Large Neighborhood Searches to attempt to deliver high quality solutions to any generic Mixed-Integer Program (MIP) quickly. While general-purpose primal heuristics are widely used due to their universal application, they are usually outperformed by domain-specific heuristics when optimizing a particular problem class. In this paper, we focus on the fast development of domain-specific parallel primal heuristics. Our approach entails specializing PACS to better adapt to the target problem structure. We showcase its application to two classes of the Maritime Inventory Routing Problem, an important application of MIPs to real world problems. We computationally compare the proposed modified framework with state-of-the art specialized algorithms and MIP solvers. Results show the effectiveness of our approach, and how the modular nature of PACS can provide a platform for the rapid prototyping of parallel domain-specific heuristics. [ABSTRACT FROM AUTHOR]
Communications of the ACM. Jun84, Vol. 27 Issue 6, p556-563. 8p. 2 Diagrams, 6 Charts.
RAPID prototyping, PROTOTYPES, JOB analysis, INFORMATION resources management, SYSTEMS design, ORGANIZATIONAL change, and CORPORATE culture
This article assesses the effectiveness of the prototyping approach to information systems development. In this investigation of the effectiveness of the prototyping approach, user and designer attitudes are explored through field interviews and a laboratory experiment. The research findings concerning the impact of the prototyping approach on designers and users of information systems provide some insight into the effectiveness of the prototyping approach. A prototyping effort should be undertaken by designers and users who are well informed about the prototyping approach. Prototyping philosophy and plans should be understood by both designers and users. Prototyping is a new approach to information systems development, and like any organizational innovation, it needs a supportive organizational climate. Prerequisites to successful prototyping include technological tools that facilitate fast response to user requests and motivated and knowledgeable users and designers. In summary, the prototyping approach offers an opportunity to achieve favorable user attitudes toward the design process and the information system.
The article informs about WESTEC Long Beach Convention Center event which showcased the latest in machinery, metrology, design, digital innovations, 3D printing, and engineering expertise in California. It mentions how the emerging technologies that are transforming how we design and make things. It further reports that the Complimentary educational sessions included interactive Knowledge Bars, keynote addresses and informative new-product demonstrations.
RAPID prototyping, ENGINEERING design, THREE-dimensional printing, MATERIALS, 3-D printers, and DIGITAL printing presses
An interview with Nadav Goshen, chief executive officer (CEO) of MakerBot Industries, is presented. Topic include the platform was designed for engineers who need immediate access to a 3D printer that can deliver industrial performance but at a significantly lower cost, and also providing engineers with more material options by working with filament suppliers to offer a wider range of materials.
The article informs that rapid prototyping plays a critical role in the development of various consumer products. One might think that with today's high-end computer-aided design systems and high-resolution display screens, a product can be designed and assembled correctly in virtual space, then communicated to a factory and mass-produced at the touch of a button. Product development today always keeps the consumer in mind. In focus groups, ideation groups, and ethnography studies, the invited participants prefer to see and feel real products, not just look at computer-generated images. To refine the feel of a product, its ergonomic aspects must be evaluated, including the position and shape of handgrips, buttons, screens, dials, and ports. The overall development cycle is short. Creating a prototype--or rather a series of prototypes--is critical. Some markets change so quickly that toy makers in particular create two models--one that "works like" and one that "looks like"--before compressing all design considerations and iterations into a single footprint and launching into mass production in late summer.
RAPID prototyping, TEAMS in the workplace, EDGES (Geometry), MOTORSPORTS, and HELP-seeking behavior
(Bloomberg) -- The U.K. is homing in on a solution to the shortage of ventilators needed to address the growing coronavirus crisis with help from Formula 1 motor racing teams and corporate giants such as Siemens AG and Airbus SE. On March 20, Formula 1 issued a statement saying a collective of U.K.-based teams were working on the ventilator project. [Extracted from the article]
RAPID prototyping, TEAMS in the workplace, HELP-seeking behavior, EDGES (Geometry), and MOTORSPORTS
(Bloomberg) -- The U.K. is homing in on a solution to the shortage of ventilators needed to deal with the growing coronavirus crisis with help from Formula 1 motor racing teams and corporate giants such as Siemens AG and Airbus SE. On March 20, Formula 1 issued a statement saying a collective of U.K.-based teams were working on the ventilator project. [Extracted from the article]
RAPID prototyping, GEARING, THREE-dimensional printing, GEARBOXES, and HELICAL gears
The article provides information on possibilities of different types of gear in prototyping and their role in our everyday life. Topics discussed include gears like straight cut spur, helical, and alternative gear trains; harvesting of gears from another product, and requirement for 3D printing and custom gearing.
RAPID prototyping, INTEGRATED circuits, PRINTED circuits, ELECTRIC capacity, and COPPER
DON'T GET ME WRONG—I LOVE PRINTED CIRCUIT BOARDS. PCBs are, of course, essential in mass-produced products. Even for hobbyists, a small run assures almost perfectly repeatable circuits. And PCBs with a good ground plane are essential for high-frequency circuits operating at more than a few megahertz. A ground plane is a large area of copper that's used as a low-inductance electrical return path from components to a circuit's power supply. It prevents parasitic capacitance from smearing high-frequency signals into noise, and the absence of a ground plane is why you can't build a high-frequency circuit using a breadboard and expect it to work well, or at all. • But rapid prototyping with PCBs has drawbacks compared with the speed and ease of building a circuit on a breadboard. You can quickly make your own PCBs—as long as you don't mind the mess and some stained clothing and are willing to drill your own through holes. Or you can send your PCB layout to be made by a commercial service, but this takes several days at least and is more expensive. • So I began thinking about practical alternatives for high-frequency circuits that can provide maker-friendly prototypes that are fast to build, and easy to probe and alter. In this article, I'll be presenting one key idea; some follow-on strategies will appear on the IEEE Spectrum website in the coming weeks. I should say that I make no claims of originality: Indeed I employ some oft-forgotten, decades-old techniques, but they turn out to be surprisingly useful in an age of surface-mount components operating at gigahertz frequencies. [ABSTRACT FROM AUTHOR]
RAPID prototyping, OCCUPATIONAL training, and COMPUTER software
Focuses on the idea of rapid prototyping in the design and development of a training software. Use of computer-aided design softwares in rapid prototyping; Benefits of rapid prototyping; Requirements in rapid prototyping.
Communications of the ACM. Jun2005, Vol. 48 Issue 6, p66-73. 8p. 14 Color Photographs.
RAPID prototyping, MATHEMATICS, PROTOTYPES, USER interfaces (Computer systems), VISUAL perception, and SCULPTURE
The article focuses on a 3D visualization tool that takes on sculpture and mathematical forms. Two decades ago, few sculptors used computers in the creative phases of their work. Most notable among them was Helaman Ferguson, an artist and mathematics professor at Brigham Young University, who has combined mathematics and sculpting for most of his life. His creativity and analytical skills came together in a custom-built, computer controlled carving tool that allows him to transfer shapes described by mathematical expressions with high precision into large-scale stone sculptures. The first program was Sculpture Generator I in 1996. Its geometry kernel consisted of about 5,000 lines of C code, the rendering module used OpenGL, and the user interface was built on Mosaic. The user could manipulate a dozen sliders to specify the topology and geometry of the object--the order of the saddles used, their number in the chain, the amount of twist and total bending being applied, and the width and thickness of the surface itself, as well as the detailed shape of the edges being formed.
RAPID prototyping, PROTOTYPES, NEW product development, MANUFACTURING processes, and RAW materials
The article presents information on several ways to speed up the prototyping process. Topics discussed include tools and techniques to make prototypes from flat pieces of raw material; the use of inexpensive materials and fast processing methods to narrow in on the best solution; and some ways to make great prototypes and from flat stock material.
RAPID prototyping, TECHNOLOGICAL innovations, MANUFACTURING processes, THREE-dimensional printing, 3-D printers, and DIGITAL printing
The article focuses on the evolution and improvements on 3D printer, one of the most important tools for product development as it helps prototypers build parts in a matter of hours, when machining or molding can take days or weeks. Information on some of the innovations include high-performance filaments, multi-material printing, and metal printing.
The article focuses on additive manufacturing (AM) or also known as three-dimensional (3D) printing as an alternative for rapid prototyping. It says that AM is use in stereo lithography and selective laser sintering wherein the shape defined by computer-aided design (CAD) is achieved through deposition of various materials and use of lasers to fuse the layers. It mentions the increase trend of using bonded sand as build material.
RAPID prototyping, INFORMATION storage & retrieval systems, KNOWLEDGE management, DEFENSE procurement, MILITARY technology, and ARMED forces
The article discusses the Mission Command Battle Lab's (MCBL) experience with the Army Regulation (AR) 5-5 study process and with using the study results while collaborating with other organizations to provide tangible benefits to the U.S. Army. The MCBL helps drive the rapid development of a functioning prototype based on the study results. The AR 5-5 study, conducted during summer and fall 2013, hypothesized that there is no mission command system designed and developed for the commander.