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COMPARISON OF SHOCK TEST METHODS OF MIL-S-901 DERIVED FROM TESTS ON A CIRCUIT-BREAKER AND SWITCHBOARD

NAVAL ENGINEERS JOURNAL 1992年第3期104卷 178-190页

作者： BRADLEY, TL DAVES, TM MCCAMPBELL, SL YKEMA, JI Thomas L. Bradley Jr:. is director of program management of SPD Technologies research and development group in Philadelphia Pa. He has twenty years of experience on Navy shipboard electrical power protective systems and electrical switchgear. Mr. Bradley received a B.S. degree in electrical engineering from Villanova University. He is a member of ASNE SNAME and IEEE. Ted M. Daves:is president of Hi-Test Laboratories Inc. Mr. Daves has devoted his professional career to Navy shock survivability testing programs to support shock qualification research on hull mechanical electrical and combat systems for both surface ships and submarines. He has twenty years of experience in lightweight medium weight and heavyweight shock qualification programs and has conducted shock survivability inspections at the component and systems level on almost all types of machinery and equipment that require MIL-S-901 shock qualification. He received his B.S. degree in industrial technology from Western Carolina University in 1970 and is a member of ASNE IES Shock and Vibration Information Center and ADPA. Steven L. McCampbell P.E:. is the engineering supervisor and senior technical officer at Hi-Test Laboratories Inc. where he has worked in direct support of Navy shock and vibration testing programs since 1978. His work includes test program management testing machine design and solution of design problems encountered by machinery and equipment undergoing shock and vibration qualification. He is familiar with instrumentation systems and methods data reduction and data interpretation. He received his B.S. in civil engineering from the University of Virginia in 1985. John I. Ykema P.E:. is vice president and chief technical officer at SPD Technologies Philadelphia Pa. He has served in various capacities within SPD (formerly I-T-E) since 1955. He served for three years (1951–1954) with NavSea (formerly BuShips) engineering electrical power systems for aircraft carriers and cruisers. Mr. Ykema received his M.S. degree

For shipboard equipment to qualify as shock-hardened, it must pass a shock test in accordance with the military shock test specification, MIL-S-901 [1]. The test methods prescribed by MIL-S-901 have gone essentially unchanged since 1963. All equipment is divided into three test categories, depending on weight, and a different shock test machine is specified for each weight category. The heavy weight category is further sub-divided depending on the method of mounting within the ship, namely deck mounted or hull mounted. The authors have observed cases when equipment passing MIL-S-901 shock qualification testing using one method (e.g., the medium weight) failed when tested on another method (e.g., the floating shock platform). Concern about this difference in shock phenomena between the approved equipment performance stimulated the authors to perform the testing and analysis presented in this paper. The thirty year old test methods which have contributed significantly to shock survivability may not always simulate adequately the actual shipboard installation during shock qualification testing, thus leading to a false confidence level that all qualified equipment will perform well in combat. To explore the possible variations in shock phenomena from the different methods, an extensive testing program was conducted whereby a 100 ampere circuit breaker was subjected to shock testing under the four methods outlined in MIL-S-901D, namely, lightweight, medium weight, heavy weight deck, and heavy weight hull. The data gathered during the testing, and the performance of the equipment under test, were both evaluated and analyzed to observe differences in shock phenomena from each of the four different test methods. The shock testing methods, the equipment which was subjected to test, the test procedures, and the results of the investigation are described in this paper. The recommendations suggest improvements to the Navy shock testing methods and procedures.

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An effect of tsunami to hotel occupancy: A case of Phuket, Thailand

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IOP Conference Series: Earth and Environmental Science 2019年第1期273卷

作者： J Tang N Leelawat A Suppasri F Imamura School of Management Technoogy Sirindhorn International Institute of Technology Thammasat University 131 Moo 5 Tiwanont Road Bangkadi Pathum Thani 12000 Thailand Department of Industrial Engineering Faculty of Engineering Chulalongkorn University Phayathai Road Pathumwan Bangkok 10330 Thailand Disaster and Risk Management Information Systems Research Group Chulalongkorn University Phayathai Road Pathumwan Bangkok 10330 Thailand Risk and Disaster Management Program Graduate School Chulalongkorn University Phayathai Road Pathumwan Bangkok 10330 Thailand International Research Institute of Disaster Science Tohoku University 468-1 Aramaki-Aza Aoba Aoba-ku Sendai 980-0845 Japan

As a popular city for global tourists, more than one third of the Phuket GPP depends on the hotel and restaurant sector. The 2004 Indian Ocean Tsunami caused a serious physical damage to hotels and a high cancellation of bookings in the post disaster period, which, in turn, led to most THB 3 billion drop of the hotel and restaurant sector income in 2005 in Phuket. In addition, many tourism facilities in Phuket suffered bankruptcy or a slump, because they started their business again immediately after the reconstruction phase, while tourists did not really come back. This paper is an initiative study of our research project to evaluate the effects of the 2004 Indian Ocean Tsunami on Hotel Occupancy, with a focus on the speed for the physical reconstruction and tourism market recovery. We collected the physical reconstruction period and the hotel occupancy recovery data of six hotels that located in the Patong Beach of Phuket from 2003 to 2017. Through calculation, the average of damage rate (i.e., unavailability of the rooms in this study) is 55.89%, with an average speed for the physical reconstruction to rebuild the rooms about 6.07% of the overall rooms per month. The quotient of these two values indicates that the reconstruction period is around 9.2 months. However, the average period for reconstruction and tourism recovery is about 20 months. There is an about 11 months' delay between that hotel and resorts have finished the reconstruction and the tourists start to visit Phuket as usual. Therefore, the local government, local tourist authority, and hotel entrepreneurs can consider these findings in order to prepare the recovery plan for tourism industry in the future tsunami.

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THE FFG–7 GUIDED MISSLE FRIGATE program– MODEL FOR THE FUTURE?

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Naval Engineers Journal 1978年第3期90卷 93-105页

作者： BEECHER, JOHN D. DiTRAPANI, ANTHONY R. Captain John D. Beecher USN:is the Project Manager Guided Missile Frigate Ship Acquisition Project. He holds a BS degree in Naval Science from the U. S. Naval Academy a BS degree in Electrical Engineering from the U. S. Navy Postgraduate School and a MS degree in Aeronautics and Astronautics from MIT. He is a qualified Surface Warfare Officer who served for seventeen years in the unrestricted line. Captain Beecher's military decorations include the Meritorious Service Medal with Star in lieu of Second Award. Mr. Anthony R. DiTrapani:is the Deputy Project Manager of the Guided Missile Frigate Ship Acquisition Project. He received his BS degree in Mechanical Engineering from the University of Wisconsin in 1958. He began his engineering career in the Navy's Bureau of Ships Steam Turbine and Gear Branch. specializing in steam turbine systems for nuclear submarines. In 1962 after completing graduate work at The George Washington University and a Navy–sponsored Electronics Training Program he joined the SQS–26 Sonar Project and served as Head of the Special Projects Section and subsequently the Test and Analysis Section until 1967. In 1967 he was selected to head the ASW Branch and later the Technical Management Plans Division for the DD–963 Ship Acquisition Project. Naval Sea Systems Command until 1971 when he was assigned to the FFG Project.

Late in 1970, Admiral E. R. Zumwalt, Chief of Naval Operations, directed that study begin towards development of a new class of ocean escort, now known as the FFG 7 (Oliver Hazard Perry) Class, to take over some of the duties of the Navy's World War II destroyers as these 25 year old ships are retired from the active Fleet. At the same time, the Department of Defense was significantly revising its basic policies for the development and acquisition of major weapons systems, and the FFG became the Navy's first major ship class acquisition under these new policies. These new policies, as announced in DOD Directive 5000.1, along with the program constraints imposed by the CNO, required the development of a philosophy and approach towards design, test and evaluation and acquisition which was significantly different from previous ship procurements. This paper summarizes the overall acquisition, T&E and logistic support plans for the FFG 7 Class as they were developed and implemented to meet these needs and constraints, discusses the ship trial results, and provides a commentary regarding the effectiveness of the approach and future applicability. © 1978 American Society of Naval Engineers

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Correction: The structural, vibrational, and mechanical properties of jammed packings of deformable particles in three dimensions

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Soft matter 2022年第19期18卷 3815页

作者： Dong Wang John D Treado Arman Boromand Blake Norwick Michael P Murrell Mark D Shattuck Corey S O'Hern Department of Mechanical Engineering & Materials Science Yale University New Haven Connecticut 06520 USA. corey.ohern@yale.edu. Integrated Graduate Program in Physical and Engineering Biology Yale University New Haven Connecticut 06520 USA. Department of Physics Yale University New Haven Connecticut 06520 USA. Department of Biomedical Engineering Yale University New Haven Connecticut 06520 USA. Systems Biology Institute Yale University West Haven Connecticut 06516 USA. Benjamin Levich Institute and Physics Department The City College of New York New York New York 10031 USA. Department of Applied Physics Yale University New Haven Connecticut 06520 USA.

Correction for 'The structural, vibrational, and mechanical properties of jammed packings of deformable particles in three dimensions' by Dong Wang , , 2021, , 9901-9915, DOI: 10.1039/D1SM01228B.

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Energy-Based Evaluations on Eucalyptus Biomass Production

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International Journal of Forestry Research 2012年第1期2012卷

作者： Thiago L. Romanelli Marcos Milan Rafael Cesar Tieppo College of Agriculture “Luiz de Queiroz” (ESALQ) University of Sao Paulo (USP) Avenida Padua Dias 11 C.P.9 13418-900 Piracicaba SP Brazilesalq.usp.br Graduate Program in Engineering of Agricultural Systems College of Agriculture “Luiz de Queiroz” (ESALQ) University of Sao Paulo (USP) Avenida Padua Dias 11 C.P.9 13418-900 Piracicaba SP Brazilesalq.usp.br

Dependence on finite resources brings economic, social, and environmental concerns. Planted forests are a biomass alternative to the exploitation of natural forests. In the exploitation of the planted forests, planning and management are key to achieve success, so in forestry operations, both economic and noneconomic factors must be considered. This study aimed to compare eucalyptus biomass production through energy embodiment of anthropogenic inputs and resource embodiment including environmental contribution (emergy) for the commercial forest in the Sao Paulo, Brazil. Energy analyses and emergy synthesis were accomplished for the eucalyptus production cycles. It was determined that emergy synthesis of eucalyptus production and sensibility analysis for three scenarios to adjust soil acidity (lime, ash, and sludge). For both, energy analysis and emergy synthesis, harvesting presented the highest input demand. Results show the differences between energy analysis and emergy synthesis are in the conceptual underpinnings and accounting procedures. Both evaluations present similar trends and differ in the magnitude of the participation of an input due to its origin. For instance, inputs extracted from ores, which represent environmental contribution, are more relevant for emergy synthesis. On the other hand, inputs from industrial processes are more important for energy analysis.

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COMPUTER AIDS FOR SHIP DESIGN, INTEGRATION AND CONTROL

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NAVAL ENGINEERS JOURNAL 1980年第2期92卷 73-87页

作者： CARLSON, CM JOHNSON, RA HELMING, FW Mr. Craig M. Carlson received his B.S. degree in Naval Architecture and Marine Engineering from the University of Michigan in 1970 and began his career with the Department of the Navy at the Naval Ship Engineering Center (NAVSEC). In 1972. he returned to the University of Michigan under the NAVSEC Long Term Training Program and received his M.S. degree in Naval Architecture and Marine Engineering. After returning to the Ship Arrangements Branch at NAVSEC. he was assigned as Task Leader for General Arrangements for the PGG PCG PHM. and MCM ship designs and was awarded Outstanding Performance Awards in 1974 and 1975. In addition he was Manager of the Arrangement Subsystem of the Navy's Computer-Aided Ship Design and Construction Program (CASDAC). In October 1979. he became Manager of the CASDAC Hull Design System. Currently. he also is enrolled in the M.S. of Computer Science Program at Johns Hopkins University. Mr. Carlson previously has presented technical papers at ASNE Day 1974 and 1978 as well as at the 1979 DOD Manufacturing Technology Advisory Group Conference. Besides ASNE. which he joined in 1972. he is a member of SNAME. ASE. and the U.S. Naval Institute. Mr. Robert A. Johnson is a Naval Architect in Surface Combatants Design (SEA 03D3). Ship Design Integration Directorate Naval Sea Systems Command. He received an Associate in Engineering degree in Drafting and Design Technology in 1959. his B.S. degree in Aerospace Engineering in 1965. and his M.S. degree in Engineering Mechanics in 1970. all from the Pennsylvania State University. In 1973. he was selected for the NA VSEC Hull Division s Long Term Training Program at the University of Michigan subsequently receiving his M.S.E. degree in Naval Architecture in 1974. Mr. Johnson began his career with the Ordnance Research Laboratory at Pennsylvania State University in 1959 where he worked. on the design of hydroelastic submarine models and conducted research in the area of flow induced structural vibrations. In 1967 he joined HRB-Singer at State Colle

This paper presents an integrated approach to Computer-Aided Ship Design for U.S. Navy preliminary and contract design. An integrated Hull Design System (HDS), currently under development by the Hull Group of the Naval Sea systems Command (NAVSEA 32). is the vehicle for the discussion. This paper is directed toward practicing ship design professionals and the managers of the ship design process. Primary emphasis of this paper, and of the development effort currently under way, is on aiding ship design professionals in their work. Focus is on integration and management control of the extremely complex set of processes which make up naval ship design. The terminology of the Ship Designer and Design Manager is used. The reader needs no familiarity with the technologies of computer science.

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Double-Hollow Au@CdS Yolk@Shell Nanostructures as Superior Plasmonic Photocatalysts for Solar Hydrogen Production

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Advanced Functional Materials 2024年第46期34卷

作者： Chen, Yi-An Nakayasu, Yuhi Lin, Yu-Chang Kao, Jui-Cheng Hsiao, Kai-Chi Le, Quang-Tuyen Chang, Kao-Der Wu, Ming-Chung Chou, Jyh-Pin Pao, Chun-Wei Chang, Tso-Fu Mark Sone, Masato Chen, Chun-Yi Lo, Yu-Chieh Lin, Yan-Gu Yamakata, Akira Hsu, Yung-Jung Department of Materials Science and Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Graduate School of Natural Science and Technology Okayama University Okayama700–8530 Japan National Synchrotron Radiation Research Center Hsinchu30076 Taiwan Research Center for Applied Sciences Academia Sinica Taipei11529 Taiwan Green Technology Research Center Chang Gung University Taoyuan33302 Taiwan Mechanical and Systems Research Laboratories Industrial Technology Research Institute Hsinchu31040 Taiwan Department of Physics National Changhua University of Education Changhua50007 Taiwan Institute of Innovative Research Tokyo Institute of Technology Kanagawa226–8503 Japan Center for Emergent Functional Matter Science National Yang Ming Chiao Tung University Hsinchu300093 Taiwan International Research Frontiers Initiative Institute of Innovative Research Tokyo Institute of Technology Kanagawa226–8503 Japan Sumitomo Chemical Next-Generation Eco-Friendly Devices Collaborative Research Cluster Kanagawa226-8503 Japan

Structural engineering has proven effective in tailoring the photocatalytic properties of semiconductor nanostructures. In this work, a sophisticated double-hollow yolk@shell nanostructure composed of a plasmonic, mobile, hollow Au nanosphere (HGN) yolk and a permeable, hollow CdS shell is proposed to achieve remarkable solar hydrogen production. The shell thickness of HGN@CdS is finely adjusted from 7.7, 18.4 to 24.5 nm to investigate its influence on the photocatalytic performance. Compared with pure HGN, pure CdS, a physical mixture of HGN and CdS, and a counterpart single-hollow cit-Au@CdS yolk@shell nanostructure, HGN@CdS exhibits superior hydrogen production under visible light illumination (λ = 400–700 nm). The apparent quantum yield of hydrogen production reaches 8.2% at 320 nm, 6.2% at 420 nm, and 4.4% at 660 nm. The plasmon-enhanced activity at 660 nm is exceptional, surpassing the plasmon-induced photoactivities of the state-of-the-art plasmonic photocatalysts ever reported. The superiority of HGN@CdS originates from the creation of charge separation state at HGN/CdS heterojunction, the considerably long-lived hot electrons of plasmonic HGN, the magnified electric field, and the advantageous features of double-hollow yolk@shell nanostructures. The findings can provide a guideline for the rational design of versatile double-hollow yolk@shell nanostructures for widespread photocatalytic applications. © 2024 The Author(s). Advanced Functional Materials published by Wiley-VCH GmbH.

关键词： Cadmium sulfide

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THE UNITED STATES NAVY'S “DESIGN WORK STUDY” APPROACH TO THE DEVELOPMENT OF SHIPBOARD CONTROL systems

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Naval Engineers Journal 1976年第6期88卷 62-74页

作者： PLATO, ARTIS I. GAMBREL, WILLIAM DAVID Artis I. Plato:is Head of the Design Work Study/ Shipboard Manning/Human Factors Engineering Section Systems Engineering and Analysis Branch Naval Ship Engineering Center (NAVSEC). He graduated from the City College of New York in 1956 receiving his Bachelor of Mechanical Engineering degree. Following this he started work at the New York Naval Shipyard in the Internal Combustion Engine and Cargo Elevator Section. During 1957 and 1958 he was called up for active duty with the U.S. Army Corps of Engineers and served in Europe with a Construction Engineer Battalion. After release from active duty he returned to the shipyard where he remained until 1961 when he transferred to the Naval Supply Research and Development Facility Bayonne New Jersey. Initially he was in charge of an Engineering Support Test Group and the drafting services for the whole Facility. Later he became a Project Engineer in the Food Services Facilities Branch with duties that included planning and designing new afloat and ashore messing facilities for the Navy. In 1966 he transferred to NAVSEC as a Project Engineer in the Design Work Study Section and in this capacity worked on selected projects and manning problems for new construction and also developed a computer program (Manpower Determination Model) that makes accurate crew predictions for feasibility studies. In 1969 he became Head of the Section. He has been active in the U.S. Army Reserve since his release from active duty and his duties have included command of an Engineer Company various Staff positions and his present assignment as Operations Officer for a Civil Affairs Group. He has completed the U. S. A rmy Corps of Engineers Career Course and the Civil Affairs Career Course and is presently enrolled in the U.S. Army Command and General Staff College non-resident course. Additionally he completed graduate studies at American University Washington D.C in 1972 receiving his MSTM degree in Technology of Management and is a member of ASE ASME CAA U. S. Naval Instit

The purpose of this paper is to discuss a system analysis technique called “Design Work Study”, that is used by the U.S. Navy for the development of improved ship control systems. The Design Work Study approach is one which brings about the most efficient and cost effective man‐machine combination for the ship control functions. Adherence to this process insures that the advantages of automation are balanced against incurred operational and maintenance expense. At present, U.S. Navy doctrine requires that certain ship operating stations, such as steering and propulsion control, be manned at specified ship conditions of readiness. Therefore, if personnel are needed to fulfill these combat environment obligations, excessive automation may only result in unnecessary additional acquisition costs and increased personnel skill requirements. The Design Work Study process can be applied to establish the required fine balance between the degree of built‐in automation and the shipboard manpower levels. In order to explain the techniques that are used for this process, the Authors will present a brief summary of the Design Work Study approach for optimizing shipboard control systems, including an explanation of the formal procedural tools that are applicable. In addition, a practical case study of ship control system design for one of the latest classes of Navy destroyers will be presented. This example will illustrate the resultant savings and benefits that can be realized by a judicious application of this technique. © 1976 American Society of Naval Engineers

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Reconstruction of extensive air shower images of the first Large Size Telescope prototype of CTA using a novel likelihood technique 37

Reconstruction of extensive air shower images of the first L...

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37th International Cosmic Ray Conference, ICRC 2021

作者： Emery, Gabriel Dalchenko, Mykhailo Foffano, Luca Heller, Matthieu Montaruli, Teresa Abe, H. Aguasca, A. Agudo, I. Antonelli, L.A. Aramo, C. Armstrong, T. Artero, M. Asano, K. Ashkar, H. Aubert, P. Baktash, A. Bamba, A. Baquero Larriva, A. Baroncelli, L. Barres de Almeida, U. Barrio, J.A. Batkovic, I. Becerra González, J. Bernardos, M.I. Berti, A. Biederbeck, N. Bigongiari, C. Blanch, O. Bonnoli, G. Bordas, P. Bose, D. Bulgarelli, A. Burelli, I. Buscemi, M. Cardillo, M. Caroff, S. Carosi, A. Cassol, F. Cerruti, M. Chai, Y. Cheng, K. Chikawa, M. Chytka, L. Contreras, J.L. Cortina, J. Costantini, H. De Angelis, A. de Bony de Lavergne, M. Deleglise, G. Delgado, C. Delgado Mengual, J. della Volpe, D. Depaoli, D. Di Pierro, F. Di Venere, L. Díaz, C. Dominik, R.M. Dominis Prester, D. Donini, A. Dorner, D. Doro, M. Elsässer, D. Escudero, J. Fiasson, A. Fonseca, M.V. Freixas Coromina, L. Fukami, S. Fukazawa, Y. Garcia, E. Garcia López, R. Giglietto, N. Giordano, F. Gliwny, P. Godinovic, N. Green, D. Grespan, P. Gunji, S. Hackfeld, J. Hadasch, D. Hahn, A. Hassan, T. Hayashi, K. Heckmann, L. Herrera Llorente, J. Hirotani, K. Hoffmann, D. Horns, D. Houles, J. Hrabovsky, M. Hrupec, D. Hui, D. Hütten, M. Inada, T. Inome, Y. Iori, M. Ishio, K. Iwamura, Y. Jacquemont, M. Jimenez Martinez, I. Jouvin, L. Jurysek, J. Kagaya, M. Karas, V. Katagiri, H. Kataoka, J. Kerszberg, D. Kobayashi, Y. Kong, A. Kubo, H. Kushida, J. Lamanna, G. Lamastra, A. Le Flour, T. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Luque-Escamilla, P.L. Majumdar, P. Makariev, M. Mandat, D. Manganaro, M. Mannheim, K. Mariotti, M. Marquez, P. Marsella, G. Martí, J. Martinez, O. Martínez, G. Martínez, M. Marusevec, P. Mas, A. Maurin, G. Mazin, D. Mestre Guillen, E. Micanovic, S. Miceli, D. Miener, T. Miranda, J.M. Miranda, L.D.M. Mirzoyan, R. Mizuno, T. Molina, E. Monteiro, I. Moralejo, A. Morcuende, D. Moretti, E. Morselli, A. Mrakovcic, K. Murase, K. Nagai, A. University of Geneva DPNC 24 rue du Général-Dufour Geneva Switzerland Institute for Cosmic Ray Research University of Tokyo Japan Departament de Física Quàntica i Astrofísica Institut de Ciències del Cosmos Universitat de Barcelona IEEC-UB Spain Instituto de Astrofísica de Andalucía-CSIC Spain INAF - Osservatorio Astronomico di Roma Italy INFN Sezione di Napoli Italy Aix Marseille Univ CNRS IN2P3 CPPM France The Barcelona Institute of Science and Technology Spain IRFU CEA Université Paris-Saclay France LAPP Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS-IN2P3 Annecy France Universität Hamburg Institut für Experimentalphysik Germany Graduate School of Science University of Tokyo Japan EMFTEL department IPARCOS Universidad Complutense de Madrid Spain INAF - Osservatorio di Astrofisica e Scienza dello spazio di Bologna Italy Centro Brasileiro de Pesquisas Físicas Brazil INFN Sezione di Padova Università degli Studi di Padova Italy Instituto de Astrofísica de Canarias Departamento de Astrofísica Universidad de La Laguna Spain Max-Planck-Institut für Physik Germany Department of Physics TU Dortmund University Germany Saha Institute of Nuclear Physics India INFN Sezione di Trieste Università degli Studi di Udine Italy INFN Sezione di Catania Italy Italy University of Geneva Département de physique nucléaire et corpusculaire Switzerland Palacky University Olomouc Faculty of Science Czech Republic CIEMAT Spain Port d'Informació Científica Spain INFN Sezione di Torino Italy Dipartimento di Fisica Universitá degli Studi di Torino Italy INFN Sezione di Bari Università di Bari Italy University of Rijeka Department of Physics Croatia Institute for Theoretical Physics and Astrophysics Universität Würzburg Germany Physics Program Graduate School of Advanced Science and Engineering Hiroshima University Japan INFN Sezione di Bari Politecnico di Bari Italy Faculty of Physics and Applied Informatics University of Lodz Poland University of Split FESB Croat

Ground-based gamma-ray astronomy aims at reconstructing the energy and direction of gamma rays from the extensive air showers they initiate in the atmosphere. Imaging Atmospheric Cherenkov Telescopes (IACT) collect the Cherenkov light induced by secondary charged particles in extensive air showers (EAS), creating an image of the shower in a camera positioned in the focal plane of optical systems. This image is used to evaluate the type, energy and arrival direction of the primary particle that initiated the shower. This contribution shows the results of a novel reconstruction method based on likelihood maximization. The novelty with respect to previous likelihood reconstruction methods lies in the definition of a likelihood per single camera pixel, accounting not only for the total measured charge, but also for its development over time. This leads to more precise reconstruction of shower images. The method is applied to observations of the Crab Nebula acquired with the Large Size Telescope prototype (LST-1) deployed at the northern site of the Cherenkov Telescope Array. © 2022 Sissa Medialab Srl. All rights reserved.

关键词： Charged particles

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Acoustic Microflows: Dancing with the Cells: Acoustic Microflows Generated by Oscillating Cells (Small 9/2020)

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Small 2020年第9期16卷

作者： Alinaghi Salari Sila Appak-Baskoy Maya Ezzo Boris Hinz Michael C. Kolios Scott S. H. Tsai Institute for Biomedical Engineering Science and Technology (iBEST) Toronto ON M5B 1T8 Canada Biomedical Engineering Graduate Program Ryerson University Toronto ON M5B 2K3 Canada Department of Chemistry and Biology Ryerson University Toronto ON M5B 2K3 Canada Faculty of Dentistry University of Toronto Toronto ON M5G 1G6 Canada Faculty of Dentistry Institute of Biomaterials and Biomedical Engineering (IBBME) University of Toronto Toronto ON M5G 1G6 Canada Department of Physics Ryerson University Toronto ON M5B 2K3 Canada Department of Mechanical and Industrial Engineering Ryerson University Toronto ON M5B 2K3 Canada

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