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How Doc Draper Became the Father of Inertial Guidance
(Preprint) AAS 18-121 HOW DOC DRAPER BECAME THE FATHER OF INERTIAL GUIDANCE Philip D. Hattis* With Missouri roots, a Stanford Psychology degree, and a variety of MIT de- grees, Charles Stark “Doc” Draper formulated the basis for reliable and accurate gyro-based sensing technology that enabled the first and many subsequent iner- tial navigation systems. Working with colleagues and students, he created an Instrumentation Laboratory that developed bombsights that changed the balance of World War II in the Pacific. His engineering teams then went on to develop ever smaller and more accurate inertial navigation for aircraft, submarines, stra- tegic missiles, and spaceflight. The resulting inertial navigation systems enable national security, took humans to the Moon, and continue to find new applica- tions. This paper discusses the history of Draper’s path to becoming known as the “Father of Inertial Guidance.” FROM DRAPER’S MISSOURI ROOTS TO MIT ENGINEERING Charles Stark Draper was born in 1901 in Windsor Missouri. His father was a dentist and his mother (nee Stark) was a school teacher. The Stark family developed the Stark apple that was popular in the Midwest and raised the family to prominence1 including a cousin, Lloyd Stark, who became governor of Missouri in 1937. Draper was known to his family and friends as Stark (Figure 1), and later in life was known by colleagues as Doc. During his teenage years, Draper enjoyed tinkering with automobiles. He also worked as an electric linesman (Figure 2), and at age 15 began a liberal arts education at the University of Mis- souri in Rolla. -
Safety Risk Management of Underground Engineering in China: Progress, Challenges and Strategies
Accepted Manuscript Safety risk management of underground engineering in China: Progress, challenges and strategies Qihu Qian, Peng Lin PII: S1674-7755(16)30017-8 DOI: 10.1016/j.jrmge.2016.04.001 Reference: JRMGE 245 To appear in: Journal of Rock Mechanics and Geotechnical Engineering Received Date: 4 December 2015 Revised Date: 31 March 2016 Accepted Date: 13 April 2016 Please cite this article as: Qian Q, Lin P, Safety risk management of underground engineering in China: Progress, challenges and strategies, Journal of Rock Mechanics and Geotechnical Engineering (2016), doi: 10.1016/j.jrmge.2016.04.001. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT Safety risk management of underground engineering in China: Progress, challenges and strategies Qihu Qian1,*, Peng Lin2 1. PLA University of Science and Technology, Nanjing, 210014, China 2. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, China Received 4 December 2015; received in revised form 31 March 2016; accepted 13 April 2016 Abstract: Underground construction in China is featured by large scale, high speed, long construction period, complex operation and frustrating situations regarding project safety. Various accidents have been reported from time to time, resulting in serious social impact and huge economic loss. -
By September 1976 the Charles Stark Draper Laboratory, Inc. Cambridge
P-357 THE HISTORY OF APOLLO ON-BOARD GUIDANCE, NAVIGATION, AND CONTROL by David G. Hoag September 1976 The Charles Stark Draper Laboratory, Inc. Cambridge, Massachusetts 02139 @ The Charles Stark Draper Laboratory, Inc. , 1976. the solar pressure force on adjustable sun vanes to drive the average speed of these wheels toward zero. Overall autonomous operation was managed on-board by a small general purpose digital computer configured by its designer, Dr. Raymond Alonso, for very low power drain except at the occasional times needing fast computation speed. A special feature of this computer was the pre-wired, read-only memory called a core rope, a configuration of particularly high storage density requiring only one magnetic core per word of memory. A four volume report of this work was published in July, 1959, and presented to the Air Force Sponsors. However, since the Air Force was disengaging from civilian space development, endeavors to interest NASA were undertaken. Dr. H. Guyford Stever, then an MIT professor, arranged a presentation with Dr. Hugh Dryden, NASA Deputy Administrator, which took place on September 15.* On November 10, NASA sent a letter of in- tent to contract the Instrumentation Laboratory for a $50,000 study to start immediately. The stated purpose was that this study would con- c tribute to the efforts of NASA's Jet Propulsion Laboratory in conducting unmanned space missions to Mars, Venus, and the Earth's moon scheduled in Vega and Centaur missions in the next few years. A relationship be- tween MIT and JPL did not evolve. JPL's approach to these deep space missions involved close ground base control with their large antenna tracking and telemetry systems, considerably different from the on- board self sufficiency method which the MIT group advocated and could best support. -
Supplementary Figure 1: Interconnected Multiplex with Six Nodes in Two Layers (A and D) and Corresponding Aggregated Networks (B and E)
Supplementary Figure 1: Interconnected multiplex with six nodes in two layers (A and D) and corresponding aggregated networks (B and E). The nodes are ranked by their eigenvector centrality in each layer separately, in the aggregated and in the whole interconnected structure (C and F). Case A, B and C. Nodes 1 and 3 have a key role in the multilayer, being bridges between the two layers. In a collaboration network they would represent scientists working on two different research areas who allow information to flow from one subject to the other. While nodes 1 and 3 gain centrality from their connections to \hubs" on different layers, they also gain centrality from their own counterparts in other layers, making them important in the multilayer network. In the aggregated network their versatility disappears, because the information is washed out by projecting on a single layer, where nodes 2 and 6 are still \hubs" but it is not possible to capture the importance of nodes 1 and 3 in bridging different areas. Case D, E and F. This example shows how aggregating the full information on a single network introduces a spurious symmetry between nodes 2, 3, 4 and 6 that is not present in the multilayer, except for 2 and 4. The resulting score in the aggregate is not able to capture the difference between these nodes (corresponding to a degeneration in the eigenspace) while it is evident that, for instance, node 6 is more central than node 3 because of its direct connection to node 1 { the \hub" { in layer 1. -
Oxford University Press Free Sample Chapter Multiplex-Multi-Level
FREE SAMPLE CHAPTER Networks and Complex Systems publications from Oxford University Press 30% online discount Networks Multilayer Networks Introduction to the Second Edition Structure and Function Theory of £49.99 £34.99 £55.00 £38.50 Complex Systems Mark Newman Ginestra Bianconi £49.99 £34.99 Stefan Thurner, Peter Klimek, Rudolf Hanel Generating Random Scale-Free Networks Agent-Based Modeling Networks and Graphs Complex Webs in and Network Dynamics £55.00 £38.50 Nature and Technology £57.50 £40.25 Ton Coolen, Alessia Annibale, £34.49 £24.14 Akira Namatame, Ekaterina Roberts Guido Caldarelli Shu-Heng Chen Order online at www.oup.com and enter the code EXCCS-18 to get a 30% discount Visit us at stand #1 to receive your free hard copy of this chapter and join our mailing list. OUP UNCORRECTED PROOF – FIRST PROOF, 3/8/2018, SPi Preface As the field of complex networks entered its maturity phase, most scientists working in this field thought that the established methodology could deal with all casesof networked systems. However, as is usually the case in the scientific enterprise, some novel observations showed that what we already know is only a limited case, and network theory has still long way to go until we can make any definitive claim. The ever-increasing availability of data in fields ranging from computer science to urban systems, medicine, economics, and finance showed that networks that were usually perceived as distinct and isolated are, in reality, interacting with other networks. While this sounds like a trivial observation, it was shown that interactions of different networks can lead to unexpected behaviors and allow systemic vulnerabilities to emerge. -
Charles Zhang
In a little over 35 years China’s economy has been transformed Week in China from an inefficient backwater to the second largest in the world. If you want to understand how that happened, you need to understand the people who helped reshape the Chinese business landscape. china’s tycoons China’s Tycoons is a book about highly successful Chinese profiles of entrepreneurs. In 150 easy-to- digest profiles, we tell their stories: where they came from, how they started, the big break that earned them their first millions, and why they came to dominate their industries and make billions. These are tales of entrepreneurship, risk-taking and hard work that differ greatly from anything you’ll top business have read before. 150 leaders fourth Edition Week in China “THIS IS STILL THE ASIAN CENTURY AND CHINA IS STILL THE KEY PLAYER.” Peter Wong – Deputy Chairman and Chief Executive, Asia-Pacific, HSBC Does your bank really understand China Growth? With over 150 years of on-the-ground experience, HSBC has the depth of knowledge and expertise to help your business realise the opportunity. Tap into China’s potential at www.hsbc.com/rmb Issued by HSBC Holdings plc. Cyan 611469_6006571 HSBC 280.00 x 170.00 mm Magenta Yellow HSBC RMB Press Ads 280.00 x 170.00 mm Black xpath_unresolved Tom Fryer 16/06/2016 18:41 [email protected] ${Market} ${Revision Number} 0 Title Page.qxp_Layout 1 13/9/16 6:36 pm Page 1 china’s tycoons profiles of 150top business leaders fourth Edition Week in China 0 Welcome Note.FIN.qxp_Layout 1 13/9/16 3:10 pm Page 2 Week in China China’s Tycoons Foreword By Stuart Gulliver, Group Chief Executive, HSBC Holdings alking around the streets of Chengdu on a balmy evening in the mid-1980s, it quickly became apparent that the people of this city had an energy and drive Wthat jarred with the West’s perception of work and life in China. -
Memorial Tributes: Volume 15
THE NATIONAL ACADEMIES PRESS This PDF is available at http://nap.edu/13160 SHARE Memorial Tributes: Volume 15 DETAILS 444 pages | 6 x 9 | HARDBACK ISBN 978-0-309-21306-6 | DOI 10.17226/13160 CONTRIBUTORS GET THIS BOOK National Academy of Engineering FIND RELATED TITLES Visit the National Academies Press at NAP.edu and login or register to get: – Access to free PDF downloads of thousands of scientific reports – 10% off the price of print titles – Email or social media notifications of new titles related to your interests – Special offers and discounts Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the National Academies Press. (Request Permission) Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 15 Memorial Tributes NATIONAL ACADEMY OF ENGINEERING Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 15 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 15 NATIONAL ACADEMY OF ENGINEERING OF THE UNITED STATES OF AMERICA Memorial Tributes Volume 15 THE NATIONAL ACADEMIES PRESS Washington, D.C. 2011 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 15 International Standard Book Number-13: 978-0-309-21306-6 International Standard Book Number-10: 0-309-21306-1 Additional copies of this publication are available from: The National Academies Press 500 Fifth Street, N.W. Lockbox 285 Washington, D.C. 20055 800–624–6242 or 202–334–3313 (in the Washington metropolitan area) http://www.nap.edu Copyright 2011 by the National Academy of Sciences. -
Automatic Control Emerges
Automatic Control Emerges Karl Johan Åström Department of Automatic Control LTH Lund University Karl Johan Åström Automatic Control Emerges Automatic Control Emerges K. J. Åström 1 Introduction 2 The Computing Bottleneck 3 State of the Art around 1940 4 WWII 5 Servomechanisms 6 Summary Theme: Unification, theory, and analog computing. Karl Johan Åström Automatic Control Emerges Lectures 1940 1960 2000 1 Introduction 2Governors | | | 3 ProcessControl | | | 4 Feedback Amplifiers | | | 5 Harry Nyquist | | | 6Aerospace | | | 7 Automatic Control Emerges ← | | 8 TheSecond Phase ← ← | 9 The Swedish Scene | | | 10TheLundScene | | 11 The Future of Control → Karl Johan Åström Automatic Control Emerges Introduction Control became established as the first systems field in the period 1940–1960 with a good theoretical base, computational tools and an unusually broad industrial base. Solid theoretical base Linear, nonlinear and stochastic systems Solid academic base Research and education Books and curricula Industrial base Organizations Conferences Journals Karl Johan Åström Automatic Control Emerges Automatic Control Emerges K. J. Åström 1 Introduction 2 The Computing Bottleneck 3 State of the art around 1940 4 WWII 5 Servomechanisms 6 Summary Theme: Unification, theory, and analog computing. Karl Johan Åström Automatic Control Emerges The Computing Bottleneck Driving force: Transient stability of power networks General Electric designed a 500 mile transmission line from Canada to New England and New York. Similar situation in Sweden with power generation -
FOIA) Document Clearinghouse in the World
This document is made available through the declassification efforts and research of John Greenewald, Jr., creator of: The Black Vault The Black Vault is the largest online Freedom of Information Act (FOIA) document clearinghouse in the world. The research efforts here are responsible for the declassification of hundreds of thousands of pages released by the U.S. Government & Military. Discover the Truth at: http://www.theblackvault.com Received Received Request ID Requester Name Organization Closed Date Request Description Mode Date 16-F-0001 Grazier, Daniel Project On Government PAL 10/1/2015 - The full report titled “Force of the Future” that lists proposed Oversight changes to the DoD’s personnel management system as described in Andrew Tilghman’s 1 September 2015 Military Times story, “’Force of the Future’: career flexibility, fewer moves”. (Date Range for Record Search: From 08/01/2015 To 09/30/2015) 16-F-0002 Maziarz, Jessica Bryan Cave LLP Mail 10/1/2015 10/13/2015 [ ] 16-F-0003 Reichenbach, Sarah The National Security Archive PAL 10/1/2015 - All documents, including but not limited to cables, letters, memoranda, briefing papers, transcripts, summaries, notes, emails, reports, drafts, and intelligence documents relating in whole or in part to the introduction on June 22, 2004 and passing on July 22,2004 of concurrent House and Senate resolutions determining the situation in Darfur to be genocide (H. Con.Res. 467 and S. Con. Res. 133). 16-F-0004 Reichenbach, Sarah The National Security Archive PAL 10/1/2015 6/22/2016 All documents, including, but not limited to, cables, letters, memoranda, briefing papers, transcripts, summaries, notes, emails, reports, drafts, and intelligence documents related in whole or in part to the decision to send an Atrocities Investigation Team to the Chad/Sudan border to document atrocities in June 2004. -
Please Click Here to Download
No.1 October 2019 EDITORS-IN-CHIEF Tobias BIANCONE, GONG Baorong EDITORIAL BOARD MEMBERS (in alphabetical order by Pinyin of last name) Tobias BIANCONE, Georges BANU, Christian BIET, Marvin CARLSON, CHEN Jun, CHEN Shixiong, DING Luonan, Erika FISCHER-LICHTE, FU Qiumin, GONG Baorong, HE Chengzhou, HUANG Changyong, Hans-Georg KNOPP, HU Zhiyi, LI Ruru, LI Wei, LIU Qing, LIU Siyuan, Patrice PAVIS, Richard SCHECHNER, SHEN Lin, Kalina STEFANOVA, SUN Huizhu, WANG Yun, XIE Wei, YANG Yang, YE Changhai, YU Jianchun. EDITORS WU Aili, CHEN Zhongwen, CHEN Ying, CAI Yan CHINESE TO ENGLISH TRANSLATORS HE Xuehan, LAN Xiaolan, TANG Jia, TANG Yuanmei, YAN Puxi ENGLISH CORRECTORS LIANG Chaoqun, HUANG Guoqi, TONG Rongtian, XIONG Lingling，LIAN Youping PROOFREADERS ZHANG Qing, GUI Han DESIGNER SHAO Min CONTACT TA The Center Of International Theater Studies-S CAI Yan: [email protected] CHEN Ying: [email protected] CONTENTS I 1 No.1 CONTENTS October 2019 PREFACE 2 Empowering and Promoting Chinese Performing Arts Culture / TOBIAS BIANCONE 4 Let’s Bridge the Culture Divide with Theatre / GONG BAORONG STUDIES ON MEI LANFANG 8 On the Subjectivity of Theoretical Construction of Xiqu— Starting from Doubt on “Mei Lanfang’s Performing System” / CHEN SHIXIONG 18 The Worldwide Significance of Mei Lanfang’s Performing Art / ZOU YUANJIANG 31 Mei Lanfang, Cheng Yanqiu, Qi Rushan and Early Xiqu Directors / FU QIUMIN 46 Return to Silence at the Golden Age—Discussion on the Gains and Losses of Mei Lanfang’s Red Chamber / WANG YONGEN HISTORY AND ARTISTS OF XIQU 61 The Formation -
Scientific American Scientificamerican.Com
ORGAN REPAIRS DENGUE DEBACLE HOW EELS GET ELECTRIC The forgotten compound that can A vaccination program Insights into their shocking repair damaged tissue PAGE 56 gone wrong PAGE 38 attack mechanisms PAGE 62 MIND READER A new brain-machine interface detects what the user wants PLUS QUANTUM GR AVIT Y IN A LAB Could new experiments APRIL 2019 pull it off? PAGE 48 © 2019 Scientific American ScientificAmerican.com APRIL 2019 VOLUME 320, NUMBER 4 48 NEUROTECH PHYSICS 24 The Intention Machine 48 Quantum Gravity A new generation of brain-machine in the Lab interface can deduce what a person Novel experiments could test wants. By Richard Andersen the quantum nature of gravity on a tabletop. By Tim Folger INFRASTRUCTURE 32 Beyond Seawalls MEDICINE Fortified wetlands and oyster reefs 56 A Shot at Regeneration can protect shorelines better than A once forgotten drug compound hard structures. By Rowan Jacobsen could rebuild damaged organs. By Kevin Strange and Viravuth Yin PUBLIC HEALTH 38 The Dengue Debacle ANIMAL PHYSIOLOGY In April 2016 children in the Philip- 62 Shock and Awe pines began receiving the world’s Understanding the electric eel’s first dengue vaccine. Almost two unusual anatomical power. years later new research showed By Kenneth C. Catania ON THE COVER Tapping into the brain’s neural circuits lets people that the vaccine was risky for many MATHEMATICS with spinal cord injuries manipulate computer kids. The campaign ground to 70 Outsmarting cursors and robotic limbs. Early studies underline a halt, and the public exploded a Virus with Math the need for technical advances that make in outrage. -
ACUUS 2002 International Conference Urban
ASSOCIAZIONE GEORISORSE E AMBIENTE TORINO POLITECNICO DI TORINO ACUUS 2002 International Conference Urban Underground Space: a Resource for Cities In memory of Prof. Lelio Stragiotti November 14th-16th, 2002 Torino, Italy Program Politecnico di Torino Corso Duca degli Abruzzi, 24 10129 Torino – I 1 Under the Auspices of Ministero delle Infrastrutture e dei Trasporti (requested) Sponsorship of the International Tunnelling Association (ITA - AITES) In cooperation with 2 The growing need for underground transportation systems as an alternative to surface alignments, for space for trade, offices, social and recreational facilities and for service networks such as telephone cables, sewers, water, gas pipes, etc under existing surface structures, has increased the frequency of underground construction in highly urbanized areas. The attraction of underground structures is closely related to the community's evaluation of the drawbacks of surface and aerial structures in terms of environmental degradation. Unfortunately, most of the numerous advantages of underground structures, especially those concerning the protection of the environment, often cannot be quantified in monetary terms. As the construction costs of underground structures are generally higher than those of building on the surface, underground structures are in some ways " penalized " when compared to surface construction. However, when surface and underground projects are compared over the expected life of the projects, underground construction can prove more economic. Underground structures are generally energy conserving due to their removal from the effects of the changing surface climate. Similarly, by putting facilities underground, valuable surface land can be used for other purposes. The decision-making process, when evaluating an underground project against a surface or aerial alternative, should not only refer to the construction cost, but should take into account the various advantages offered by the underground alternative, particularly those related to the effects on the environment.