Web-Based Innovation Indicators – Which Firm Web- Site Characteristics Relate to Firm-Level Innovation Activity?
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Considerations and Simulations About Pulse Detonation Engine
MATEC Web of Conferences 290, 04009 (2019) https://doi.org/10.1051/matecconf /2019290 04009 MSE 2019 Considerations and simulations about Pulse Detonation Engine Vasile Prisacariu1,*, Constantin Rotaru1, and Mihai Leonida Niculescu2 1Henri Coandă Air Force Academy, Aviation Department, Brașov, Romania 2INCAS, Aerodynamic Department, București, Romania Abstract. PDE propulsion can work from a subsonic regime to hypersonic regimes; this type of engine can have higher thermodynamic efficiency compared to other turbojet or turbofan engines due to the removal of rotating construction elements (compressors and turbines) that can reduce the mass and total cost of propulsion system. The PDE experimental researches focused on both the geometric configuration and the thermo- gas-dynamic flow aspects to prevent uncontrolled self-ignition. This article presents a series of numerical simulations on the functioning of PDE with hydrogen at supersonic regimens. Acronyms and symbols PDE pulse detonation engine AB PDE after burner pulse detonation engine DDT deflagration-to-detonation transition PDRE pulse detonation rocket engine ZDN Zel'dovich-von Neumann-Doering Mx, My Mach numbers p pressure v volume T temperature ρ density u1, u2 velocity h1, h2 enthalpy s1, s2 (S) entropy Vo,V∞ speed 1 INTRODUCTION Detonation is an effective means of burning a fuel mixture and transforming chemical energy into mechanical energy. However, this concept of running the propulsion systems involves difficulties both in rapidly achieving the fuel mixture at high speeds and in initiating and sustaining detonation in a controlled manner. PDE differs from conventional propulsion systems in two main aspects: it generates an intermittent pulse and produces high pressure increase in the combustion chamber, which also represents a major advantage of a PDE, see Figure 1. -
Non-Lethal Technologies: an Overview
TABLE OF CONTENTS Editor's Note Kerstin VIGNARD................................................................................................................ 1 Special Comment Robin M. COUPLAND ....................................................................................................... 3 Science, technology and the CBW regimes Science, technology and the CBW control regimes Alexander KELLE ................................................................................................................. 7 The malign misuse of neuroscience Malcolm DANDO............................................................................................................... 17 Assault on the immune system Kathryn NIXDORFF ............................................................................................................. 25 Non-lethal technologies—an overview Nick LEWER and Neil DAVISON ......................................................................................... 37 Biological weapons and the life sciences: the potential for professional codes Brian RAPPERT .................................................................................................................... 53 Open Forum Lessons from the implementation of the anti-personnel Mine Ban Convention Ambassador Stephan NELLEN ............................................................................................. 63 UNIDIR Focus ..................................................................................................... 69 iii EDITOR'S NOTE The -
GURPS4E Ultra-Tech.Qxp
Written by DAVID PULVER, with KENNETH PETERS Additional Material by WILLIAM BARTON, LOYD BLANKENSHIP, and STEVE JACKSON Edited by CHRISTOPHER AYLOTT, STEVE JACKSON, SEAN PUNCH, WIL UPCHURCH, and NIKOLA VRTIS Cover Art by SIMON LISSAMAN, DREW MORROW, BOB STEVLIC, and JOHN ZELEZNIK Illustrated by JESSE DEGRAFF, IGOR FIORENTINI, SIMON LISSAMAN, DREW MORROW, E. JON NETHERLAND, AARON PANAGOS, CHRISTOPHER SHY, BOB STEVLIC, and JOHN ZELEZNIK Stock # 31-0104 Version 1.0 – May 22, 2007 STEVE JACKSON GAMES CONTENTS INTRODUCTION . 4 Adjusting for SM . 16 PERSONAL GEAR AND About the Authors . 4 EQUIPMENT STATISTICS . 16 CONSUMER GOODS . 38 About GURPS . 4 Personal Items . 38 2. CORE TECHNOLOGIES . 18 Clothing . 38 1. ULTRA-TECHNOLOGY . 5 POWER . 18 Entertainment . 40 AGES OF TECHNOLOGY . 6 Power Cells. 18 Recreation and TL9 – The Microtech Age . 6 Generators . 20 Personal Robots. 41 TL10 – The Robotic Age . 6 Energy Collection . 20 TL11 – The Age of Beamed and 3. COMMUNICATIONS, SENSORS, Exotic Matter . 7 Broadcast Power . 21 AND MEDIA . 42 TL12 – The Age of Miracles . 7 Civilization and Power . 21 COMMUNICATION AND INTERFACE . 42 Even Higher TLs. 7 COMPUTERS . 21 Communicators. 43 TECH LEVEL . 8 Hardware . 21 Encryption . 46 Technological Progression . 8 AI: Hardware or Software? . 23 Receive-Only or TECHNOLOGY PATHS . 8 Software . 24 Transmit-Only Comms. 46 Conservative Hard SF. 9 Using a HUD . 24 Translators . 47 Radical Hard SF . 9 Ubiquitous Computing . 25 Neural Interfaces. 48 CyberPunk . 9 ROBOTS AND TOTAL CYBORGS . 26 Networks . 49 Nanotech Revolution . 9 Digital Intelligences. 26 Mail and Freight . 50 Unlimited Technology. 9 Drones . 26 MEDIA AND EDUCATION . 51 Emergent Superscience . -
Study and Numerical Simulation of Unconventional Engine Technology
STUDY AND NUMERICAL SIMULATION OF UNCONVENTIONAL ENGINE TECHNOLOGY by ANJALI SHEKHAR B.E Aeronautical Engineering VTU, Karnataka, 2013 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, Aerospace Engineering, College of Engineering and Applied Science, University of Cincinnati, Ohio 2018 Thesis Committee: Chair: Ephraim Gutmark, Ph.D. Member: Shaaban Abdallah, Ph.D. Member: Mark Turner, Sc.D. An Abstract of Study and Numerical Simulation of Unconventional Engine Technology by Anjali Shekhar Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Master of Science Degree in Aerospace Engineering University of Cincinnati December 2018 The aim of this thesis is to understand the working of two unconventional aircraft propul- sion systems and to setup a two-dimensional transient simulation to analyze its operational mechanism. The air traffic has nearly increased by about 40% in past three decades and calls for alternative propulsion techniques to replace or support the current traditional propulsion methodology. In the light of current demand, the thesis draws motivation from renewed inter- est in two non-conventional propulsion techniques designed in the past and had not been given due importance due to various flaws/drawbacks associated. The thesis emphasizes on the work- ing of Von Ohains thermal compression engine and pulsejet combustors. Computational Fluid Dynamics is used in current study as it offers very high flexibility and can be modified easily to incorporate the required changes. Thermal Compression engine is a design suggested by Von Ohain in 1948. The engine works on the principle of pressure rise caused inside the engine which completely depends on the temperature of working fluid and independent of rotations per minute. -
Writer Chris Tavares Dias Cover Design & Layout Joshua Raynack
Writer Chris Tavares Dias Cover Design & Layout Joshua Raynack Cover Illustration Nick Greenwood Editor Christopher Stilson Interior Illustrations Nick Greenwood, Wayne Miller Logo Designs Nick Greenwood Military Advisor Geoffrey Lamb Playtesters Aaron Hamilton, Aaron Hengst, Ahmed Alex Nasla, Alex Hofer, Alex Tendy, Andrew Cermak, Andrew Howes, Andrew Impellezari, Andrew Young, Angela Berry, Bill Yon, Brad Scoble, Brandon Allen, Brian Barngrover, Cameron Lauder, Charla Anderson, Charles Mitchell, Chris Baker, Chris Brown, Chris Brown, Chris Clouser, Chris Dias, Chris Oveson, Chris Tyler, Chris Young, Christopher Baker, Christopher Hunt, Christopher Stilson, Chuck McGinnis, Clarence Sterling, Daryl Anderson, Dave Lee, Dave Painter, David Baker, David Guyll, David Henderson, David Hoyer, Denny Glau, Derek Mitchem, Dirk Lancer, Douglas Warshowski, Edd McGinnis, Edward Martin, Elizabeth Bonsell, Eric Bonsell, Eric Braun, Fernando Barrocal, Gabriel Clouser, Gary Bratzel, Geoffrey Lamb, Glen Gratton, Greg Brown, Ian Hunt, Igor Diamantino, Jason Brown, Jeff Berndt, Jennifer Hoyer, Jesse Fuhrman, Jessica Painter, Jewel Sandeen, Joe Hinke, John Keyes, Johnny Riess, Jon Ohman, Jordi Franch, Jordi Martin Castany, Jordi SalaIbars, Joseph Toral, Joshua Hamilton, Justin Mathena, Khalea Allen, Kiara Sandeen, Kyle Smith, Liz Strom-Deason, Lynette Terrill, Marc Franch Ventura, Marc Sonnenberger, Marcelo Dior, Marina Ursa, Mark Whiting, Mathew Wilson, Melissa Oveson, Mica Fetz, Michael Andaluz, Michael Murphy, Mike Fitch, Mike McMullen, Miles Orion Kelley, -
Aeronautical Engineering
NASA/S P--1999-7037/S U P PL407 September 1999 AERONAUTICAL ENGINEERING A CONTINUING BIBLIOGRAPHY WITH INDEXES National Aeronautics and Space Administration Langley Research Center Scientific and Technical Information Program Office The NASA STI Program Office... in Profile Since its founding, NASA has been dedicated CONFERENCE PUBLICATION. Collected to the advancement of aeronautics and space papers from scientific and technical science. The NASA Scientific and Technical conferences, symposia, seminars, or other Information (STI) Program Office plays a key meetings sponsored or cosponsored by NASA. part in helping NASA maintain this important role. SPECIAL PUBLICATION. Scientific, technical, or historical information from The NASA STI Program Office is operated by NASA programs, projects, and missions, Langley Research Center, the lead center for often concerned with subjects having NASA's scientific and technical information. substantial public interest. The NASA STI Program Office provides access to the NASA STI Database, the largest collection TECHNICAL TRANSLATION. of aeronautical and space science STI in the English-language translations of foreign world. The Program Office is also NASA's scientific and technical material pertinent to institutional mechanism for disseminating the NASA's mission. results of its research and development activities. These results are published by NASA in the Specialized services that complement the STI NASA STI Report Series, which includes the Program Office's diverse offerings include following report types: creating custom thesauri, building customized databases, organizing and publishing research TECHNICAL PUBLICATION. Reports of results.., even providing videos. completed research or a major significant phase of research that present the results of For more information about the NASA STI NASA programs and include extensive data or Program Office, see the following: theoretical analysis. -
High Energy Materials Related Titles
Jai Prakash Agrawal High Energy Materials Related Titles M. Lackner, F. Winter, A.K. Agrawal M. Hattwig, H. Steen (Eds.) (Eds.) Handbook of Explosion Prevention Handbook of Combustion and Protection 5 Volumes 2004 2010 ISBN: 978-3-527-30718-0 ISBN: 978-3-527-32449-1 R. Meyer, J. Köhler, A. Homburg R. Meyer, J. Köhler, A. Homburg Explosivstoffe Explosives 2008 2007 ISBN: 978-3-527-32009-7 ISBN: 978-3-527-31656-4 J.P. Agrawal, R.D. Hodgson N. Kubota Organic Chemistry of Explosives Propellants and Explosives Thermochemical Aspects of 2007 ISBN: 978-0-470-02967-1 Combustion 2007 ISBN: 978-3-527-31424-9 U. Teipel (Ed.) Energetic Materials Particle Processing and Characterization 2005 ISBN: 978-3-527-30240-6 Jai Prakash Agrawal High Energy Materials Propellants, Explosives and Pyrotechnics The Author All books published by Wiley-VCH are carefully produced. Nevertheless, authors, editors, and Dr. Jai Prakash Agrawal publisher do not warrant the information C Chem FRSC (UK) contained in these books, including this book, to Former Director of Materials be free of errors. Readers are advised to keep in Defence R&D Organization mind that statements, data, illustrations, DRDO Bhawan, New Delhi, India procedural details or other items may [email protected] inadvertently be inaccurate. Library of Congress Card No.: applied for Sponsored by the Department of Science and Technology under its Utilization of Scientifi c British Library Cataloguing-in-Publication Data Expertise of Retired Scientists Scheme A catalogue record for this book is available from the British Library. Bibliographic information published by the Deutsche Nationalbibliothek The Deutsche Nationalbibliothek lists this publication in the Deutsche Nationalbibliografi e; detailed bibliographic data are available on the Internet at http://dnb.d-nb.de. -
Special Feature on Advanced Mobile Robotics
applied sciences Editorial Special Feature on Advanced Mobile Robotics DaeEun Kim School of Electrical and Electronic Engineering, Yonsei University, Shinchon, Seoul 03722, Korea; [email protected] Received: 29 October 2019; Accepted: 31 October 2019; Published: 4 November 2019 1. Introduction Mobile robots and their applications are involved with many research fields including electrical engineering, mechanical engineering, computer science, artificial intelligence and cognitive science. Mobile robots are widely used for transportation, surveillance, inspection, interaction with human, medical system and entertainment. This Special Issue handles recent development of mobile robots and their research, and it will help find or enhance the principle of robotics and practical applications in real world. The Special Issue is intended to be a collection of multidisciplinary work in the field of mobile robotics. Various approaches and integrative contributions are introduced through this Special Issue. Motion control of mobile robots, aerial robots/vehicles, robot navigation, localization and mapping, robot vision and 3D sensing, networked robots, swarm robotics, biologically-inspired robotics, learning and adaptation in robotics, human-robot interaction and control systems for industrial robots are covered. 2. Advanced Mobile Robotics This Special Issue includes a variety of research fields related to mobile robotics. Initially, multi-agent robots or multi-robots are introduced. It covers cooperation of multi-agent robots or formation control. Trajectory planning methods and applications are listed. Robot navigations have been studied as classical robot application. Autonomous navigation examples are demonstrated. Then services robots are introduced as human-robot interaction. Furthermore, unmanned aerial vehicles (UAVs) or autonomous underwater vehicles (AUVs) are shown for autonomous navigation or map building. -
A Brief Review on Robotic Exoskeletons for Upper Extremity
botic Ro s & n A i u s t e o m Islam et al., Adv Robot Autom 2017, 6:3 c n a a Advances in Robotics t v i DOI: 10.4172/2168-9695.1000177 o d n A ISSN: 2168-9695 & Automation Research Article Open Access A Brief Review on Robotic Exoskeletons for Upper Extremity Rehabilitation to Find the Gap between Research Porotype and Commercial Type Md Rasedul Islam*, Christopher Spiewak, Mohammad Habibur Rahman and Raouf Fareh College of Engineering and Applied Science, University of Wisconsin-Milwaukee, USA Abstract The number of disabled individuals due to stroke is increasing day by day and is projected to continue increasing at an alarming rate in United States. But the current amount of health professionals in physical therapy is inadequate to provide rehabilitation to these large groups. From early 1990s, researchers have been trying to develop an easy and feasible solution to this problem and lot of assistive devices both end effector type or exoskeleton type have been developed till to date. However, only a few of them have been commercialized and are being used in rehabilitation of post-stroke patients. Making the use of exoskeletons and other devices to regain lost motor function is rare. Providing therapy to this large group is quite impossible without commercializing of exoskeleton. This has motivated the authors to make a literature review and figure the reasons out that need to be solved to bridge the gap between research prototype to commercial version. This paper covers the necessity of incorporating robotic devices in rehabilitation, a brief description of existing devices particularly upper limb exoskeletons, their hardware limitations, and control issues. -
Automatic Support Control of an Upper Body Exoskeleton — Method and Validation Using the Stuttgart Exo-Jacket
Wearable Technologies (2020), 1, e2 doi:10.1017/wtc.2020.1 RESEARCH ARTICLE Automatic support control of an upper body exoskeleton — Method and validation using the Stuttgart Exo-Jacket Raphael Singer* , Christophe Maufroy and Urs Schneider Biomechatronic Systems, Fraunhofer-Gesellschaft, Institute for Manufacturing Engineering and Automation (IPA), Stuttgart, Germany *Corresponding author. Email: [email protected] Received: 1 February 2020; Revised: 9 May 2020; Accepted: 25 May 2020 Keywords: Exoskeletons; Human-Robot Interaction; Physical Human-Robot Interactive Controllers; Industry; Control Abstract Although passive occupational exoskeletons alleviate worker physical stresses in demanding postures (e.g., overhead work), they are unsuitable in many other applications because of their lack of flexibility. Active exoskeletons that are able to dynamically adjust the delivered support are required. However, the automatic control of support provided by the exoskeleton is still a largely unsolved challenge in many applications, especially for upper limb occupational exo- skeletons, where no practical and reliable approach exists. For this type of exoskeletons, a novel support control approach for lifting and carrying activities is presented here. As an initial step towards a full-fledged automatic support control (ASC), the present article focusses on the functionality of estimating the onset of user’s demand for support. In this way, intuitive behavior should be made possible. The combination of movement and muscle activation signals of the upper limbs is expected to enable high reliability, cost efficiency, and compatibility for use in industrial applications. The functionality consists of two parts: a preprocessing—the motion interpretation—and the support detection itself. Both parts were trained with different subjects, who had to move objects. -
A Powered Exoskeleton for Complete Paraplegics
applied sciences Article A User Interface System with See-Through Display for WalkON Suit: A Powered Exoskeleton for Complete Paraplegics Hyunjin Choi 1,2,* , Byeonghun Na 1, Jangmok Lee 1 and Kyoungchul Kong 1,2 1 Angel Robotics Co. Ltd., 3 Seogangdae-gil, Mapo-gu, Seoul 04111, Korea; [email protected] (B.N.); [email protected] (J.L.); [email protected] (K.K.) 2 Department of Mechanical Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 04107, Korea * Correspondence: [email protected] or [email protected]; Tel.: +82-70-7601-0174 Received: 18 October 2018; Accepted: 14 November 2018; Published: 19 November 2018 Abstract: In the development of powered exoskeletons for paraplegics due to complete spinal cord injury, a convenient and reliable user-interface (UI) is one of the mandatory requirements. In most of such robots, a user (i.e., the complete paraplegic wearing a powered exoskeleton) may not be able to avoid using crutches for safety reasons. As both the sensory and motor functions of the paralyzed legs are impaired, the users should frequently check the feet positions to ensure the proper ground contact. Therefore, the UI of powered exoskeletons should be designed such that it is easy to be controlled while using crutches and to monitor the operation state without any obstruction of sight. In this paper, a UI system of the WalkON Suit, a powered exoskeleton for complete paraplegics, is introduced. The proposed UI system consists of see-through display (STD) glasses and a display and tact switches installed on a crutch for the user to control motion modes and the walking speed. -
Advances in Atomtronics
entropy Review Advances in Atomtronics Ron A. Pepino Department of Chemistry, Biochemistry and Physics Florida Southern College, Lakeland, FL 33801, USA; rpepino@flsouthern.edu Abstract: Atomtronics is a relatively new subfield of atomic physics that aims to realize the device behavior of electronic components in ultracold atom-optical systems. The fact that these systems are coherent makes them particularly interesting since, in addition to current, one can impart quantum states onto the current carriers themselves or perhaps perform quantum computational operations on them. After reviewing the fundamental ideas of this subfield, we report on the theoretical and experimental progress made towards developing externally-driven and closed loop devices. The functionality and potential applications for these atom analogs to electronic and spintronic systems is also discussed. Keywords: atomtronics; open quantum systems; Bose–Einstein condensates; quantum simulation; quantum sensing PACS: 01.30.Rr; 03.65.Yz; 03.67.-a; 03.75.Kk; 03.75.Lm; 05.70.Ln; 06.20.-f 1. Introduction Quantum simulation has become a major research effort in atomic physics over the last three decades. Bose–Einstein condensates (BECs) have been generated, trapped, and manipulated in countless experiments, and the introduction of optical lattices has allowed Citation: Pepino, R.A. Advances in for the experimental realization of condensed matter phenomena such as the Mott insular Atomtronics. Entropy 2021, 23, 534. to superfluid phase transition and the Hofstadter butterfly [1,2]. As optical techniques https://doi.org/10.3390/e23050534 have improved, it has become possible to produce not only honeycomb [3] and Kagomé lattices [4], but custom optical lattices using holographic masks [5].