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2013 International Conference on Communications, Circuits and Systems, ICCCAS 2013

作者： Liao, Pengfei Luo, Ping Chen, Weizhong Zhang, Bo School of Microelectronics and Solid-State Electronics University of Electronic since and Technology of China State Key Laboratory of Electronic Thin Films and Integrated Devices Chengdu 610054 China

ISBN: (纸本)9781479930517

An embedded capacitor multiplier compensation (EACMC) for two-stage amplifier with large capacitive loads is presented in this paper with detailed theoretical analysis. Two voltage-controlled current sources are inserted in the proposed capacitor multiplier which is embedded in the first stage. With the advanced capacitor multiplier, the gain factor of the multiplier is enhanced and the compensation capacitor is reduced significantly. Furthermore, the GBW achieved is extended as a result. The proposed circuit is designed and simulated in 0.13μm standard CMOS process. Simulation results show that the EACMC amplifier, driving a 1200 pF capacitive load, achieves a GBW of 1.51 MHz while dissipating 154 μW power with a compensation capacitor of only 0.85 pF. © 2013 IEEE.

关键词： compensation capacitor Multiplying circuits capacitive load Capacitors gain coefficient Amplifiers double-stage capacitance embedding compensated LOAD

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The evolution of dual-wavelength dissipative soliton in Yb-doped fiber lasers

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Telkomnika - Indonesian Journal of Electrical Engineering 2013年第10期11卷 6105-6110页

作者： Zhang, Yanyan Li, Qiang Huanghe Since and Technology University Zhengzhou 450063 China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou Jiangsu 221116 China School of Mechanics and Civil Engineering China University of Mining and Technology Xuzhou Jiangsu 221116 China

Dual-wavelength dissipation soliton (DS) in the all-normal-dispersion ytterbium-doped fiber laser (YDFL) is reported. Using a phase-shift long period fiber grating (PS-LPFG) as an all-fiber format spectral filter in the laser cavity, self-starting dual-wavelength pulses are obtained by nonlinear polarization evolution (NPE). The mode-locking mechanism of the ANDi cavity with different central wavelengths has analyzed. Experimental results show that the NPE together with the PS-LPFG play key roles in the generation of the dual-wavelength, meanwhile, a switchable dual-wavelength mode-locked fiber laser can achieve through change the polarization of the cavity. © 2013 Universitas Ahmad Dahlan.

关键词： Fiber lasers

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The Adequacy Model and Analysis of Swapping Battery Requirement for Electric Vehicles

The Adequacy Model and Analysis of Swapping Battery Requirem...

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IEEE Power and Energy Society General Meeting

作者： Chang-Hua Zhang Jin-Song Meng Yong-Xing Cao Xin Cao Qi Huang Qing-Chang Zhong School of Energy Science and Technology of University of Electronic Science and Technology of China (UESTC) and Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control of UESTC Chengdu Sichuan 611731 China. Since Oct. 2011 Changhu Sichuan Electric Power Research Institute No. 23 Qinghua Rd. Chengdu 610072 Sichuan China Department of Aeronautical and Automotive Engineering Loughborough University Leicestershire LE11 3TU UK

ISBN: (纸本)9781467327275

Compared with fossil fuel vehicles, plug-in hybrid electric vehicles (PHEVs) and electric vehicles (EVs) maintain obvious and profound significance for the less city pollutant and operation noise. Moreover, EVs can benefit operation of the power systems via friendly feeding back the energy stored in the EV batteries into the grids when needed. The related research about charging of batteries for EVs has been extensively developed, which is one of the main issues for the application of EVs. This paper focuses on the cooperation between the battery demand and the supply curve problems, when the charging of EV is operated in the swapping way. Firstly, the concept of the swapping battery requirement (SBR) adequacy is presented, and then the corresponding mathematical model is established and the algorithm based on the Monte Carlo method is proposed. In addition, some critical factors which have great influence on the SBR and reserved fully charged battery (RFCB) curves are demonstrated, such as EVs driving cycle, battery capacity, average energy-consuming level and charging time. Simulation results are presented to verify the proposed method.

关键词： Index Terms-- Adequacy Charging management Demand and supply Electrical Vehicle Monte Carlo method Plug-in Hybrid Electrical Vehicle Swapping battery requirement Vehicle-to-grid (V2G). Electric vehicles Batteries Swap charging Monte Carlo technique power systems SBR Mathematical Model ADEQUACY grids Analysis

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A high speed current output stage with digital assistant circuit

A high speed current output stage with digital assistant cir...

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2010 International Conference on Communications, Circuits and Systems, ICCCAS 2010

作者： Luo, Ping Shen, Lei Zhen, Shaowei State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic since and Technology of China Chengdu Sichuan 610054 China School of Microelectronics and Solid-State Electronics University of Electronic since and Technology China

ISBN: (纸本)9781424482238

This paper introduces a novel current output stage with a Digital assistant circuit, which can obtain high speed performance. The output current stage in this paper is used in a switching driving circuit. The principle of this proposed circuit is different with the conventional structure. The added Digital assistant circuit includes a charge and discharge block, a keep block. Depended on simple digital control logic, the rise time and the fall time of the switching output current are shorten remarkably. The complete circuit was designed with the model parameters of a O.35μm mixed-signal CMOS process and simulated with HSPICE. The simulation results show the rise time of the proposed output current stage is 20ns and the regulating time for output current to be steady is only l00ns under the maximum 90mA output current condition. © 2010 IEEE.

关键词： Timing circuits

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A low power and high precision DAC in 0.13 μm CMOS for DVS system

A low power and high precision DAC in 0.13 μm CMOS for DVS ...

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2010 International Conference on Communications, Circuits and Systems, ICCCAS 2010

作者： Shi, Tingting Hou, Sijian Luo, Ping Yang, Ruhui Chen, Jun Zhen, Shaowei Zhang, Bo State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu Sichuan 610054 China School of Microelectronics and Solid-State Electronics University of Electronic since and Technology of China China

ISBN: (纸本)9781424482238

A low power and high precision digital to analog converter (DAC) for Dynamic Voltage Scaling (DVS) system is presented and demonstrated in this paper. Based on conventional resistor string architecture, the DAC is compensated by digitally controlled on-resistance network to improve output precision. The proposed 5-bit DAC can produce 0.7V∼1.475V, 25mV per step voltage as programmable reference in DVS system. The DAC is implemented by 0.13μm CMOS technology. The static power dissipation is 26.4μW when the power supply voltage is 3.3V and the reference voltage is 0.61V. The simulation results show that the output error is decreased from 5.64m V to 0.43m V after digital calibration. The conversion speed is less than 2.5μs;the digital input code transition frequency of the proposed DAC can reach 400K Hz. The performance satisfies the requirement of DVS system. © 2010 IEEE.

关键词： Digital to analog conversion

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From the Field: MateID: Design and Testing of a Novel Device For Recording Contacts Between Free-Ranging Animals

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Wildlife Society Bulletin 2010年第1期34卷

作者： MURRAY E. DOUGLAS WEIHONG JI MICHAEL N. CLOUT Science and Research Unit Department of Conservation Wellington New Zealand MetService Ltd Wellington New Zealand Murray Douglashas been working as a Senior Electronics Engineer managing the Electronics Laboratory Department of Conservation since 1985. He led the team responsible for developing threatened species monitoring technology. Murray recently moved to MetService Ltd and is now working as a Systems Engineer in the area of automatic weather station and satellite imagery technology. School of Biological Sciences The University of Auckland Auckland New Zealand Weihong Ji(pictured) is a research officer in Institute of Natural Resources at Massey University. Her research field is vertebrate behavioral ecology focusing on social behavior mating systems and behavioral responses to management. She worked on brushtail possums (Trichosurur vulpecula) in New Zealand golden monkeys (Rhinopithecus roxellanae) in China and badgers (Meles meles) in the United Kingdom. Her work now expands to mating systems of New Zealand geckos. Mick Cloutis Professor of Conservation Ecology at the University of Auckland New Zealand. He is a vertebrate ecologist and has worked extensively on the behavior of brushtail possums and the conservation biology of native New Zealand birds. Professor Clout is the founding Chair of the IUCN Invasive Species Specialist Group through which he is involved in a range of international initiatives to prevent eradicate and manage invasive species.

The design and testing of an electronic device, MateID (Electronics Laboratory, Department of Conservation, Wellington, New Zealand), for recording close proximity between wild animals is described. Comprising a receiver and data logger in a collar mounting, the device detects period-coded radiotags at distances below 40 cm. It stores time-stamped identification data in memory for up to 2 years for later down-loading to computer for processing. Bench trials of the MateID device confirmed its reliability. It recorded presence of 98.9% of stationary single tags placed within 40 cm and identified all of these correctly. However, no tags were identified where ≥2 tags were present within a 40-cm range. Trials on MateID devices attached to neck collars on captive brushtail possums (Trichosurus vulpecular) were conducted in large pens. Simultaneous video recordings confirmed that the devices accurately recorded all observed approaches (closer than 40 cm) by possums carrying MateID collars to a bait feeder fitted with a radiotransmitter. Contacts between a radiotagged possum and three carrying a MateID device also were accurately recorded. The device “MateID” provides a new technique for studying social and mating systems of free-ranging vertebrates. It also can be useful for monitoring or research of captive animals. (WILDLIFE SOCIETY BULLETIN 34(1):203–207; 2006)

关键词： brushtail possum contact rates MateID data logger mating behaviour proximity social behaviour Trichosurus vulpecular

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MARKOV DECISION PROCESSES WITH UNCERTAIN TRANSITION RATES: SENSITIVITY AND MAX HYPHEN MIN CONTROL

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Asian Journal of Control 2008年第2期6卷

作者： Suresh Kalyanasundaram Edwin K. P. Chong Ness B. Shroff Motorola India Electronics Limited No. 66/1 Plot 5 Bagmane Techpark C. V. Raman Nagar Post Bangalore 560 093 India. Department of Electrical and Computer Engineering Colorado State University Fort Collins CO 80523-1373 USA. Professor Edwin K. P. Chong received the B.E.(Hons.) degree with First Class Honors from the University of Adelaide South Australia in 1987 graduating top of his class and the M.A. and Ph.D. degrees in 1989 and 1991 respectively both from Princeton University where he held an IBM Fellowship. He joined the School of Electrical and Computer Engineering at Purdue University in 1991 where he was named a University Faculty Scholar in 1999 and promoted to Full Professor in 2001. Since August 2001 he has been a Professor of Electrical and Computer Engineering and Professor of Mathematics at Colorado State University. His current interests are in communication networks and optimization methods. He coauthored the best-selling book An Introduction to Optimization 2nd Edition Wiley-Interscience 2001. He received the NSF CAREER Award in 1995 and the ASEE Frederick Emmons Terman Award in 1998. He coauthored a paper that was awarded Best Paper in the journal Computer Networks 2003. Professor Chong is a Fellow of the IEEE. He was founding chairman of the IEEE Control Systems Society Technical Committee on Discrete Event Systems and until recently served as an IEEE Control Systems Society Distinguished Lecturer. He has been on the editorial board of the IEEE Transactions on Automatic Control. He is currently on the editorial board of the journal Computer Networks. He has also served on the organizing committees of several international conferences. He has been on the program committees for the IEEE Conference on Decision and Control the American Control Conference the IEEE International Symposium on Intelligent Control IEEE Symposium on Computers and Communications and the IEEE Global Telecommunications Conference. He has also served in the executive committees for the IEEE Co

Solution techniques for Markov decision problems rely on exact knowledge of the transition rates, which may be difficult or impossible to obtain. In this paper, we consider Markov decision problems with uncertain transition rates represented as compact sets. We first consider the problem of sensitivity analysis where the aim is to quantify the range of uncertainty of the average per-unit-time reward given the range of uncertainty of the transition rates. We then develop solution techniques for the problem of obtaining the max-min optimal policy, which maximizes the worst-case average per-unit-time reward. In each of these problems, we distinguish between systems that can have their transition rates chosen independently and those where the transition rates depend on each other. Our solution techniques are applicable to Markov decision processes with fixed but unknown transition rates and to those with time-varying transition rates.

关键词： Markov decision processes sensitivity max-min control call admission control policy iteration

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Out in the wide world with a new 'piece of paper': a survey of graduates of Edith Cowan university's Bachelor of Science ( Library technology)

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Australian Library Journal 2002年第2期51卷 143-143页

作者： Clayden, Judy Judy Clayden has been the co-ordinator of Library Technology programs and a lecturer in cataloguing in the School of Computer and Information Science at Edith Cowan University since 1989. Her teaching position involves course design and delivery to on-campus and distance education students. Other interests include indexing and the history of library and information services staff in Australia. She is currently enrolled in a PhD with the working title: Contesting identity power and status in feminized occupations: an historical case study of library paraprofessionals in Australia.

Outlines the results of a survey of the post-graduate experiences of library technicians enrolled in a Bachelor of Science in Library technology in Australia. Aim and structure of the course; Factors motivating studen... 详细信息

关键词： LIBRARY technicians LIBRARY education

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USGS compiles data set for national assessment of VOCs in ground water

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GROUND WATER MONITORING AND REMEDIATION 1997年第4期17卷 147-157页

作者： Lapham, WW Neitzert, KM Moran, MJ Zogorski, JS Wayne W. Lapham is ground water specialist for the U.S. Geological Survey's National Water-Quality Assessment Program (MS 413 12201 Sunrise Valley Dr. Reston VA 20192 e-mail: wlapham.er.usgs.gov) and also coordinates the work described in this article for the VOC National Synthesis Project of the NAWQA Program. He has worked for the USGS since 1976. He has a Ph.D. degree in hydrology an M.S. degree in geology and a B.S. degree in mechanical engineering. Kathleen M. Neitzert is a computer assistant with the USGS assisting the VOC National Synthesis Project (U.S. Geological Survey 111 Kansas SW Huron SD 57350) with data base activities for the NAWQA Program. She has been with the USGS since 1983 and has a B.A. degree in secondary education from South Dakota State University. Michael J. Moran is a doctoral student in geological engineering (hydrogeology) at the South Dakota School of Mines and Technology (U.S. Geological Survey 1608 Mt. View Rd. Rapid City SD 57702). He is working part-time at the USGS in Rapid City South Dakota on the assessment described in this article for the NAWQA VOC National Synthesis. John S. Zogorski is chief VOC National Synthesis Project (U.S. Geological Survey 1608 Mt. View Rd. Rapid City SD 57702 e-mail: jszogors. cr.usgs.gov) which is being completed by the U.S. Geological Survey as part of the NAWQA Program. He has worked for the USGS since 1992 and previously held a variety of academic positions. His Ph.D. and M.S. degrees are from Rutgers University (environmental sciences) and B.S. degree is from Drexel University (civil engineering).

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technology and manning for safe ship operations

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NAVAL ENGINEERS JOURNAL 1995年第6期107卷 79-84页

作者： Wilson, MB Pollard, ME Marc B. Wilson D.Sc. C.P.E.:is an Assistant Professor in the School of Aviation and Transportation at Dowling College. Since July 1994 Professor Wilson has been developing the human factors curriculum and laboratory. Prior to becoming a member of the Dowling faculty Dr. Wilson was a senior marine safety inspector for the U.S. Coast Guard. He was instrumental in establishing a Human Factors Marine Safety Plan. He is a retired Coast Guard Officer. Dr. Wilson is a member of the Human Factors & Ergonomic Society Transportation Research Forum American Society of Engineering Managers American Society of Naval Engineers and the Society of Naval Architects and Marine Engineers. He is a CG licensed First Assistant Engineer an FAA Certified Flight Instructor-Instrument Airplane and Certified Professional Ergonomist. Michael E. Pollard:is currently President of Chevy Chase Technology Corporation a computer systems engineering firm located in Chevy Chase Maryland. Mr. Pollard graduated from Brandeis University in 1990 and served as a legislative assistant in the U.S. Senate concentrating on science and technology issues until early 1995. This article marks Mr. PollaRD's seventh publication in the field of science and technology.

Current technology centric U.S. maritime manning reduction trends have led both the maritime industry and government policy makers to revisit the safety issue. This paper identifies the manning processes, examines, and assesses process boundaries, and evaluates relevant safety issues. This examination finds that ample opportunities exist for both improved ship safety and proper business process re-engineering, but that current applications of technology will yield dangerous results unless human factors or ergonomics is included.

关键词： Personnel

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