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Sixth-order Compact Extended Trapezoidal Rules for 2D Schr(o)dinger Equation

数学研究 2015年第1期48卷 30-52页

作者： Xiao-Hui Liu Yu-Jiang Wu Jin-Yun Yuan Raimundo J.B.de Sampaio Yan-Tao Wang School of Mathematics and Statistics Lanzhou University Lanzhou 730000 GansuP.R.China School of Mathematics and Statistics Lanzhou University Lanzhou 730000 GansuP.R.China Key Laboratory of Applied Mathematics and Complex Systems Lanzhou 730000Gansu P.R.China Department of Mathematics Federal University of Paraná Centro Politecnico CP:19.081 81531-980 Curitiba PR Brazil Graduate Program in Production and Systems Engineering Pontifical Catholic University of Paraná CEP: 81611-970 Curitiba PR Brazil

Based on high-order linear multistep methods (LMMs), we use the class of extended trapezoidal rules (ETRs) to solve boundary value problems of ordinary differential equations (ODEs), whose numerical solutions can be approximated by boundary value methods (BVMs). Then we combine this technique with fourth-order Padé compact approximation to discrete 2D Schrödinger equation. We propose a scheme with sixth-order accuracy in time and fourth-order accuracy in space. It is unconditionally stable due to the favourable property of BVMs and ETRs. Furthermore, with Richardson extrapolation, we can increase the scheme to order 6 accuracy both in time and space. Numerical results are presented to illustrate the accuracy of our scheme.

关键词： Schr(o)dinger equation BVMs ETRs compact scheme Richardson extrapolation

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Correction to "Combining of Chaotic Differential Evolution and Quadratic programming for Economic Dispatch Optimization with Valve-Point Effect"

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IEEE Transactions on Power systems 2006年第3期21卷 1465-1465页

作者： L. Dos Santos Coelho V.C. Mariani Production and Systems Engineering Graduate Program Automation and Systems Laboratory PUCPR/CCET/PPGEPS/LAS Pontifical Catholic University of Paraná Curitiba Parana Brazil Mechanical Engineering Graduate Program PUCPR/CCET/PPGEPS/LAS Pontifical Catholic University of Paraná Curitiba Parana Brazil

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VITALIZING A GOVERNMENT engineering ORGANIZATION

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NAVAL ENGINEERS JOURNAL 1971年第4期83卷 61-&页

作者： LAMARTIN, FH CAPTAIN (Ret) The authors formerly held the position of Deputy Commander for Acquisition Engineering Naval Electronic Systems Command. His career has encompassed command of gunboats during and after WW II electronics instructor at the Naval Academy Nuclear Propulsion Program shipyard representative for both the USS Long Beach and Bainbridge production engineering data processing and labor relations at Charleston Naval Shipyard Manager of AN/SQS-26 Sonar Project and Director Navships Sonar Office. Captain Lamartin is a 1944 Naval Academy graduate. He earned degrees of B.S. (Electrical Engineering) and M.S. (Nuclear Engineering) from M.I.T. and attended the Advanced Management Program at Harvard. He is a member of ASNE.

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LIGHTWEIGHT BROAD-BAND HF COMMUNICATIONS ANTENNA (LWCA)

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 279-286页

作者： BIONDI, RJ PRIDE, RW MURRAY, HD WHEELER, PK Roy J. Biondi:received his B.S.E.E. degree from the University of Illinois and has since taken additional graduate studies at the George Washington University. Currently he is head of the Communication Systems Application Branch code PDE 110–14 within the NAVELEXSYSCOM. Prior to his present appointment he served in the Combat Systems Division Naval Sea Systems Command and served as radar branch head in the former Naval Ship Engineering Center (NAVSEC). He was responsible for development and production of shipboard radars such as the AN/SPS-48 AN/SPS-49 AN/SPS-52 and AN/SPS-55. His primary Navy radar and combat system experience was attained during his earlier career in the Navy's Bureau of Ships where he was the AN/SPS-48 radar project engineer. In addition to ASNE which he joined in 1977 he is a member of IEEE and ASE and has had several technical papers published on radar radar antennas radar processing and transmission lines. Mr. Biondi has a total of 25 years naval experience in radar combat systems and communications. Richard W. Pride:received his B.S.E.E. from the University of Maine in 1959. Currently he is head of the Combatant Ship Section code PDE 110–143 in the Communications Systems Application Branch within the NAVELEXSYSCOM. Prior to joining the Naval Electronic Systems Command in 1974 he was the head of the Communication Antenna Design Section of the former Naval Ship Engineering Center. Harold D. Murray:received his B.S.E.E. from Vanderbilt University. Currently he is an EXCOMM program manager code PDE 110–1433 in the Combatant Ship Section of NAVELEXSYSCOM. As an EXCOMM program manager Mr. Murray is responsible for the external communications system design for the CG-47 (Aegis) class cruisers. Mr. Murray's previous government service includes 14 years at the Naval Research Laboratory (NRL) and 5 years at Naval Air Systems Command. Major areas of responsibility included shipboard RF distribution systems and aircraft intercommunication systems and control. Paul K. Wheeler:is pre

External communications is a critical element in the U.S. Navy design and utilization of a ship's combat system. The communications antenna system is a key factor in attainment of reliable circuit performance and reduction of electromagnetic interference (EMI). To maintain pace with improved ship manufacturing techniques and construction materials, along with design efforts to reduce topside generated EMI/RFI effects, an improved antenna design must also evolve. With the ever increasing complexity in the integration of the topside environment, the RF aspects of the antenna designs must be augmented by detailed analysis of the operating environment and the mechanical design if the goals of reliability and quality performance are to be achieved. The Naval Electronic systems Command has developed a new “Broadband HF Communications Antenna.” This paper traces the design evolution and describes the processes in determining current design deficiencies, the design objectives to correct these deficiencies and the results obtained.

关键词： ANTENNAS

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Electromobility strategy on emerging economies: Beyond selling electric vehicles

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Cleaner Energy systems 2024年 9卷

作者： Velho, Sérgio Roberto Knorr Vanderlinde, Artur Santana Guedes Almeida, Antônio Henrique Aguiar Barbalho, Sanderson César Macêdo Ministry of Development Industry Commerce and Services University of Brasília Esplanada dos Ministérios Block J – 5th-floor/DF Brasília 70053-900 Brazil Production Engineering Department Faculty of Technology University of Brasília Darcy Ribeiro University Campus Federal District Brasília 70910-900 Brazil Production Engineering Department Graduate Program in Mechatronic Systems (PPMEC) Faculty of Technology University of Brasília Darcy Ribeiro University Campus Federal District Brasília 70910-900 Brazil

Electromobility (EM) has emerged as a promising solution to achieve carbon neutrality goals by replacing traditional fossil fuel-powered transportation with electric vehicles (EVs). This sustainable transportation option significantly reduces energy consumption and eliminates greenhouse gas emissions, contributing to mitigating climate change and improving air quality. While some countries have implemented strategies to promote EM adoption, emerging economies like Brazil face complex challenges. This research employs Q-methodology to explore the viewpoints and opinions of Brazilian specialists in the field of EM, identifying challenges and opportunities for successful adoption. The study also examines the broader implications for emerging countries and their automotive industries. The findings emphasize the importance of addressing EV costs, propulsion technologies, and the need for government incentives and policies. Additionally, the research highlights the role of education and urban mobility in promoting EM. While the study offers valuable insights, it acknowledges limitations in the sample and suggests future research directions. © 2024 The Authors

关键词： Automotive value chain Electric vehicles Electromobility Q-methodology Urban mobility

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Ensiling treatment of rice straw with cow paunch content to enhance bioethanol production

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Case Studies in Chemical and Environmental engineering 2024年 10卷

作者： Ludfiani, Dini Dwi Arianti, Forita Dyah Pertiwi, Miranti Dian Prasetyo, Teguh Djarot, Ira Nurhayati Santoso, Arif Dwi Sasongko, Nugroho Adi Astuti, Widi Research Center for Sustainable Production Systems and Life Cycle Assessment National Research and Innovation Agency (BRIN) Prof. BJ. Habibie Complex Area Tangerang Selatan Banten 15314 Indonesia Energy Security Graduate Program Republic of Indonesia Defense University (UNHAN RI) IPSC Sentul Area West Java Bogor 16810 Indonesia Chemical Engineering Department Universitas Negeri Semarang Central Java Semarang 50229 Indonesia

Every year, the production of rice straw and cow paunch content is abundant and 80 % of them has not been utilized. This study aimed to determine the potency of ensiling treatment on them in producing bioethanol. The novelty of this study is the utilization of cow paunch content as biomass and source of microbial fiber degradation. In this study, there were six groups of treatments. Bioethanol fermentation used Saccharomyces cerevisiae. Results, ensiling treatment significantly affected (p < 0.001) the changed chemical composition of them and produce ethanol of 40.13–102.84 mg/L. Conclude, ensiling treatment was considered effective ratio for bioethanol production. © 2024

关键词： Bioethanol Paunch content Rice straw

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Arsenal ship program certification plan

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NAVAL ENGINEERS JOURNAL 1998年第1期110卷 249-261页

作者： Arntson, S Lind, W Turner, JJ Blaiklock, WC Tedesco, M Stephen G. Arntson is an independent consultant. A degree Naval Architect he has over 38 years of experience in the design construction and maintenance of surface ships. His experience includes 28 yeus with the Naval Sea Systems Command Naval Ship Engineering Centerl Bureau of Ships specializing in the structural design of Naval surface ships and 7 years with ABS Specializing in the application of commercial ship design practices. Most recently he worked with both NASSCO and ABS MZ the Arsenal Ship Program. Steve was very active with the Ships Structure Committee in developing R&D programs for ship structure and he is a member of the ASNE Journal Committee. Steve received a BS in Mechanical Engineering (Naval Architecture Option) from Virginia Polytechnic Institute in 1964. He is a member of the ASNE TAU BETA PI PI TAU SIGMA and PHI KAPPA PHI. William 1. Lind joined ABS in 1992 after ten years with Sparkman and Stephens Inc. He is currently ABS Amekas Manager of Engineering jm New Orleans and Cleveland. Both ofices conduct plan reviews for militavy commercial and private marine craft fm self-propelled vessels under 300 feet in length and bargus unlimited in length. As Vice-Chaimn ojthe Western Rivers Technical Committee Great Lakes Technical Committee and the Small Vessel Committee Bill participated in the writing of the 1997 ABS Guide for Building and Classing High Speed Craft and the 1997 ABS Rules for Building and Classing Steel Vessels Under 9OM. Bill received an MBA from Florida Atlantic University in 1995 a BS in Mechanical Engineering from New York Institute of Technology in 1986 and a BA in Histoy from Colgate University in 1976. He is Chaimn of SNAME HS-9 Composite Panel Testing & Fire Protection and a member of ASNE. John J. Turner is Senior Vice President of SYNTEK Technologies Inc. in Arlington Virginia. SYNTEK specializes in activities of a highly technical nature supporting both industry and government in domestic and international markets. He is a registered Professional Engineer

The Defense Advanced Research Project Agency (DARPA), in conjunction with the U.S. Navy, initiated a research program for the design and construction of a distinctive warship for the 21st century known as the Arsenal Ship. By using an innovative development and acquisition approach it was hoped to streamline the procurement process and reduce costs. In an environment where budgets are being cut, both industry and Government were challenged to develop, design, and produce the innovative ship and related mission systems to meet specific performance capabilities within strict affordability constraints. A key element of this innovative acquisition approach was a new certification scheme designed to replace the traditional test and evaluation (T&E) and acceptance process. The purpose of this paper is to describe the development of the certification plan during Phase LI of the Arsenal Ship program by the American Bureau of Shipping and the contending Shipyard teams, and to discuss the potential benefits of this alternative certification approach. Although the Arsenal Ship program was canceled late in 1997, insight derived from the exploration of new certification concepts could benefit future design and building programs.

关键词： Warships

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The Regional Deterrence Ship (RDS 2010) - A design for littoral warfare in the 2010 timeframe

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NAVAL ENGINEERS JOURNAL 1996年第1期108卷 61-72页

作者： Calvano, CN Riedel, JS Professor Charles N. Calvano Capt. USN (Ret.): of the Naval Postgraduate School is responsible for a program in Total Ship Systems Engineering. He is a graduate of the Naval Academy who served as a surface warfare officer. After completion of his graduate education at MIT he became an Engineering Duty Officer and served at Boston Naval Shipyard in several capacities. He was the Repair Facilities Advisor to the Vietnamese Navy the Project Officer for construction of nuclear powered guided missile cruisers (CGNs) at the Supervisor of Shipbuilding Newport News Virginia and served on the staff of the Commander Naval Surface Forces U.S. Atlantic Fleet and later at the Supervisor of Shipbuilding in Portsmouth Virginia in maintenance and overhaul management positions. He was Officer in Charge of the Annapolis Laboratory of the David Taylor Research Center and Commanding Officer of the Engineering Duty Officer School. He retired from active duty in October 1991 after serving in the Naval Sea Systems Command as the Director of the Ship Design Group and of the Advanced Concepts and Technology Group. Lt. Jeffrey S. Riedel USN:is an Engineering Duty Officer currently assigned to the Supervisor of Shipbuilding Bath Maine. He obtained his B.S. degree in Marine Engineering from Maine Maritime Academy in 1986 and his M.S. degree in Mechanical Engineering plus a Mechanical Engineer's degree from the Naval Postgraduate School in 1993. Lt. Riedel's naval career has included duty aboaqrd USS Wainwright (CG 28) as auxiliaries officer damage control assistant and main machinery officer. Currently he serves as the assistant production officer at SUPSHIP Bath in charge of DDG 51 class construction and delivery.

This paper describes the design of a Regional Deterrence Ship (RDS 2010) for the 2010 timeframe. The requirements for the design were for a ship to operate in littoral areas of the world with a mission of deterring regional conflicts and of hampering the efforts of the aggressor in such a conflict. In addition the ship's mission included the evacuation of friendly personnel as hostilities become likely. The problem countering the littoral threat during times of constrained budgets is addressed. Top level requirements for the design, generated in parallel with ''.... From the Sea'' [1], were used to set the design goals. The paper describes the manner in which littoral warfare changes the nature of the challenges faced by Navy surface combatants, including a ship such as the RDS 2010. A number of factors become more crucial design concerns than for blue water ships, including reduced reaction times, likelihood of attack from hidden land sites, shallow water mines and shallow water USW Certain other factors become less critical in littoral areas and this also has ship design impacts. While some present ship designs can perform some of the tasks needed in a littoral warfare/regional conflict environment, none represents a completely integrated design (hull, mechanical & electrical;combat systems;fiscal and manning constraints;reduced vulnerability;robust self-defense etc.) for a vessel stationed in waters that, without warning, can become hostile. After describing the mission requirements to which the RDS 2010 was designed, the paper discusses the controlling design philosophy and decisions and describes the process used to assess threats to the ship. The process of combat system selection, against the backdrop of expected threat scenarios, is described and the intended approach to integration of the combat system is discussed. In recognition that decreased reaction times and surprise attacks are likely to threaten a ship engaged in regional deterrence, discussions oi

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MACHINERY ARRANGEMENT DESIGN - A PERSPECTIVE

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NAVAL ENGINEERS JOURNAL 1981年第3期93卷 133-141页

作者： RESNER, ME KLOMPARENS, SH LYNCH, JP Mr. Michael E. Resner:received an Engineering Degree from Texas A&M University in 1966 and has done graduate work in management at American University. He is Director Machinery Arrangements/Control Systems and Industrial Facilities Division (SEA 525) at the Naval Sea Systems Command. His previous positions have included Program Manager Solar Total Energy Program at the Department of Energy and Branch Chief Machinery Control Systems Branch at the Naval Ship Engineering Center. Mr. Stephen H. Klomparens:is a Naval Architect at Designers & Planners Inc. and is engaged in development of computer aids for ship design. He received his B.S.E. degree in Naval Architecture and Marine Engineering from the University of Michigan in 1973 and his M.S. degree in Computer Science from the Johns Hopkins University. Mr. Kolmparens began his professional career at Hydronautics Inc. in 1974 where he was involved in the use of marine laboratory facilities for test and development of conventional and advanced marine craft. Since 1977 he has been involved with naval and commercial ship design and with development of computer-aided ship design tools. Mr. John P. Lynch:is a Principal Marine Engineer with Hydronautics Inc. He was previously employed in the auxiliary machinery and computer-aided design divisions of the David W. Taylor Naval Ship R&D Center the machinery design division of the New York Naval Shipyard and the machinery arrangement code of the Bureau of Ships. His active naval service was as a ship superintendent in the production department of the Long Beach Naval Shipyard. Mr. Lynch received his B. S. degree in Marine Engineering from the New York State Maritime College and his M.S. degree in Mechanical Engineering from Columbia University. He is a licensed Professional Engineer in the State of New York and a member of ASNE.

The machinery arrangement design process has remained relatively unchanged over the years. Recently, external demands have been placed on both the product and the producers that call for changes to this process. This paper cites these external demands and traces the evolution of the process changes from the rule-of-thumb machinery box sizing routines up to the current automated procedures. The machinery arrangement design practice is presented, and existing analytic and graphics aids are discussed. The user requirements for improved design aids are presented, with implementation guidelines and hardware/software alternatives.

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THE FFG 7 CLASS DESIGN IMPACT BY INSURV TRIALS

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NAVAL ENGINEERS JOURNAL 1982年第2期94卷 87-100页

作者： WOODRUFF, RB The authorgraduated from the U.S. Naval Academy with distinction in 1964. He served initially in theUSS Davis (DD-937)as Main Propulsion Assistant attended the Naval Destroyer School and then was a member of the Pre-Commissioning Crew and Engineer Officer in theUSS Julius A. Furer (DEG-6).Selected as an Engineering Duty Officer (ED) in 1968 he had a tour in the Maintenance Department Staff of Commander Cruisr-Destroyer Force U.S. Atlantic Fleet at Newport R.I. after which he attended Massachusetts Institute of Technology for graduate studies which culminated in his receiving his M.S. degree in Mechanical Engineering and his degree of Ocean Engineer in 1972. Following graduation he was assigned to the Boston Naval Shipyard followed by two years in theUSS Puget Sound (AD-38)as Repair Officer after which he was ordered to the Norfolk Naval Shipyard as the Production Engineering Officer. Currently he is on duty in the Naval Sea Systems Command (PMS 399) where he is the Trials Officer and Hull Technical Director for theOliver Hazard Perry (FFG-7)Class Acquisition Program. Cdr. Woodruff is a qualified Surface Warfare Officer and among his military decorations holds the Naval Achievement Medal and the Vietnamese Meritorious Unit Citation Gallantry Cross. In addition to ASNE which he joined in 1967 he is a member of the U.S. Naval Institute. Two previous papers on Naval Shipyard Production presented at ASNE Day 1978 and 1979 were published in the Naval Engineers Journal Vol. 90 No. 2 (April 1978) and Vol. 91 No. 2 (April 1979). A paper on the Management of Surface Ship Maintenance was published in theNaval Engineers JournalDecember 1980.

This paper describes the impact made on the OLIVER HAZARD PERRY (FFG 7) Class design after numerous trials by the President, Board of Inspection and Survey and his Staff. In the early 1970s, faced with a Fleet of World War II Destroyers, the Navy embarked on a program to build large numbers of Frigates to perform an Ocean Escort role. This ship had three major design constraints placed on it by Chief of Naval Operations (CNO): fixed meaning, fixed displacement, and fixed cost or “designed to cost.” The purpose of this paper is to pass on some “lessons learned.” The acid test of any ship design is how well it does with the Fleet in regard to performance and reliability. How well has the “design-constrained” FFG-7 fared with 20 plus ship trials under its belt? Very well in some areas; not so well in others. Examples of the good aspects of this ship design (LM 2500 and main propulsion train, Standard Option Equipment, et cetera) as well as those which must be considered poor will be addressed. Some examples of the latter are the “breezeway” cargo doors, ship's service diesel generators, MK 92 Combat systems, decontamination stations, and topside corrosion control. In many cases INSURV caused design changes to be made that were sorely needed; in other cases, changes were made (or not made) over issues that had little or no impact on making this ship more ready for war. A brief examination of the Naval Sea systems Command (NAVSEA) surface ship design policies is made from the point of view of the Trials Officer (the Author) who rode most of the trials with PRESINSURV. Some of the issues addressed: •Improved NAVSEA corporate memory between ship designs. •Longer Acceptance Trial for Lead Ship. •Early deployment of Lead Ship without TECHREPS. •Improved NAVSEA/INSURV/CNO communication on Trial/Technical Issues and insertion of INSURV early into the design process. •Need for NAVSEA to stand up and say “no” to costly design changes that do little to make for a better warship.

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