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2004 37th Annual Frontiers of Power Conference

作者： Youn, Luis Lee, Felix Department of Electrical and Computer Engineering Southern Illinois University Edwardsville Industrial and Manufacturing Engineering Program Southern Illinois University Edwardsville Southern Illinois University Edwardsville Edwardsville IL 62026

This paper presents the stochastic model for the operation of an on-site bottoming-cycle cogeneration acuity operating under the energy spot prices and in parallel with an electricity provider. Thus, it makes possible to purchase needed electric energy or sell any excess in each time-band. The model assumes the modified Gaussian distribution for loads and binomial distribution for the on-site cogeneration facility.

关键词： Bottoming cycle systems

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Distributed generation: Present status and current issues

Distributed generation: Present status and current issues

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2004 37th Annual Frontiers of Power Conference

作者： Kharel, Rudra Jewell, Ward Wichita State University Electrical and Computer Engineering Program Center for Energy Studies Wichita State University Department of Electrical Engineering Wichita State University WSU Center for Energy Studies IEEE WSU Wichita State University Wichita KS 67260-0044

Distributed generation (DG) is being connected to distribution systems throughout the U.S. and the world. This is occurring even though there are deployment questions that make eventual DG penetration levels uncertain. In act. some of the initial enthusiasm for DG may have faded over the past few years due in part to these unanswered questions. Even so, utilities should plan for DG technologies, evaluating their potential system affects and benefits both technically and economically This paper summarizes the present state of DG through a review of published literature on the subject. It identifies issues that should be considered by a distribution utility in connecting DG to the grid today and in planning for the future. It also presents a number of significant issues regarding DG that have not been sufficiently addressed. These issues are very important for utilities, and must be addressed before widespread use of DG will be feasible, and before the economic risk for most investors will be acceptable.

关键词： Power generation

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Technology framework and requirements for communication and control of distributed energy resources

Technology framework and requirements for communication and ...

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2004 37th Annual Frontiers of Power Conference

作者： Gomatom, Krish Bam, Lokendra Jewell, Ward EPRI-PEAC Corporation Knoxville TN Electrical and Computer Engineering Program Center for Energy Studies WSU Department of Electrical Engineering Wichita State University WSU Center for Energy Studies IEEE WSU IEEE Wichita State University EPRI-PEAC Wichita State University

The integration of Distribution Energy Resources (DER) into electric power systems is critically dependent on ownership alternatives, control, operation and event-management The seamless integration of DER requires a reliable communication interface that is compatible "System-wide" with current and emerging technologies. However, with DER finding a wide range of applications and benefits ranging from reciprocating engines used for peak shaving applications to Inverter-connected Wind turbines with Ultracapacitor storage for smoothing short-term power fluctuations, the requirements of communication mechanisms sharpened to adapt to DER situations is gaining importance. The characteristics of the communication mechanisms for DER seem to be site and equipment specific and generically non-deterministic. Additionally, utilities and Electric power cooperatives are keen to adopt a strategic DER communication and control architecture that is compatible and scalable with tite legacy architectures like DNP, SCADA and Modbus in addition to be compliant-enabled for existing or promulgated DER communication standards.

关键词： Information technology

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Robust bayesian cameras motion estimation using random sampling

Robust bayesian cameras motion estimation using random sampl...

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2004 International Conference on Image Processing, ICIP 2004

作者： Qian, Gang Chellappa, Rama Zheng, Qinfen Department of Electrical Engineering and Arts Media and Engineering Program Arizona State University Tempe AZ 85287-8706 Center for Automation Research Institute for Advanced Computer Studies University of Maryland College Park MD 20742-3275

In this paper, we propose an algorithm for robust 3D motion estimation of wide baseline cameras from noisy feature correspondences. The posterior probability density function of the camera motion parameters is represented by weighted samples. The algorithm employs a hierarchy coarse-to-fine strategy. First, a coarse prior distribution of camera motion parameters is estimated using the random sample consensus scheme (RANSAC). Based on this estimate, a refined posterior distribution of camera motion parameters can then be obtained through importance sampling. Experimental results using both synthetic and real image sequences indicate the efficacy of the proposed algorithm. ©2004 IEEE.

关键词： Motion estimation

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Joint semi-blind channel estimation and data detection for MIMO-OFDM systems

Joint semi-blind channel estimation and data detection for M...

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Proceedings of the IEEE 6th Circuits and Systems Symposium on Emerging Technologies: Frontiers of Mobile and Wireless Communication

作者： Yue, Jiang Kim, Kyeong Jin Reid, Tony Gibson, Jerry D. Department of Electrical Engineering Southern Methodist University Dallas TX 75275 Nokia Research Center 6000 Connection Dr. Irving TX 75039 Media Arts and Technology Program Electrical and Computer Engineering University of California Santa Barbara Santa Barbara CA 93106-6065

ISBN: (纸本)0780379381

In MEMO systems, where multiple antennas are used at both transmitter and receiver to achieve high spectral efficiency, channel impulse reponses are often assumed to be constant over a block or packet This assumption of block stationarity on channels is valid for most fixed wireless scenarios. However, for communications in a high mobility environment, the assumption will result in considerable performance degradation. In this paper, we focus on channel estimation for a MIMO system with OFDM transmission technique. In our system, pilots are placed on NP subcarriers for a novel channel estimation at the receiver with Kalman filters. With the channels estimated by a Kalman filter, we apply the QRD-M algorithm for suboptimal data detection with reasonable computational cost The outputs of data detection are fed back to another Kalman filter for an improved channel estimation. By alternatively and iteratively using these two Kalman filters, a better channel estimation can be obtained. A simulation result of the bit error rate shows the improvement of 10 dB in SNR with four iterations over non-iteration.

关键词： Orthogonal frequency division multiplexing

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A proposal for an integrated utilities engineering-Management M.S. program

A proposal for an integrated utilities Engineering-Managemen...

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2004 37th Annual Frontiers of Power Conference

作者： Barnes, Frank S. Fuchs, Ewald F. Tietjen, Jill S. Silverstein, Joann Ko, Hon-Yim Lookabaugh, Tom Brown, Timothy X. Sicker, Douglas C. University of Colorado AAAS IEEE International Engineering Consortium National Academy of Engineering Department of Electrical Engineering LLC McNeil Technologies Board for Girl Scouts Mile Hi Council Georgia Transmission Corporation of Tucker GA ABET Inc. National Council of Examiners for Engineering and Surveying SWE IEEE Power Engineering Society Department of Civil Environmental and Architectural Engineering UCB National Water Research Institute Women in Engineering Program Center of the American West College of Engineering Department of Civil Environmental and Archetectural Engineering University of Colorado Jet Propulsion Laboratory Computer Science Department Interdisciplinary Telecommunications Program University of Colorado Boulder University of Colorado Boulder Electrical Engineering and Interdisciplinary Telecommunications University of Colorado Boulder Department of Computer Science University of Colorado Boulder ITP Laboratory ACM Internet Society Faculty of the Progress and Freedom Foundation Institute for Regulatory Law and Economics Aspen Institute Communications and Society Program CU Computer and Communications Security Center Center for Science and Technology Policy Research Research and Engineering Center for Unmanned Vehicles Electrical and Computer Engineering Civil Environmental and Architectural Engineering

Electric, water, gas and transportation utilities face severe challenges associated with security, quality, availability, reliability and profitability issues. They must solve interrelated system problems with respect to generation of electricity, transportation of fuel, and potable as well as waste water. In the future, engineers and managers of utilities must be well versed in the different disciplines of engineering including electrical civil, mechanical and information technology. The University of Colorado at Boulder addresses this educational opportunity by proposing a novel Integrated Utilities Management program for M.S. candidates who have a solid B.S. background or equivalent in a related discipline. The M.S. program will consist of four interdisciplinary paths dealing with business management and legal topics as they relate to federal and state regulatory issues, as well as agency and people-related leadership issues. The electric utilities option of this program will be centered on three core courses related to electric power generation/transmission and distribution, security and availability, quality and reliability, economics and environmental policy, and utility finance;two elective courses from a group of courses that address nuclear power, waste water, solid waste, telecommunications, renewable energies, data communication, fuels and case studies;and one capstone course consisting of either operations research or the investigation and resolution of a pending utility project such as the right-of-way of transmission lines, specification of new power plants, retrofitting of power plants or their impact on the environment. It is expected that candidates for this MS program will come from universities, from utilities, and from private and public agencies. The MS program can be completed by full- or part time students within one or two years of intensive study, respectively. Courses will be taught both on campus and nationwide via the Center for Advanced

关键词： Public utilities

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An implementation of indoor location detection systems based on identifying codes

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3283卷 175-189页

作者： Ungrangsi, Rachanee Trachtenberg, Ari Starobinski, David Computer Science Program Shinawatra University Pathumtani 12160 Thailand Electrical and Computer Engineering Department Boston University MA 02215 United States

We present the design, implementation and evaluation of a location detection system built over a Radio Frequency network based on the IEEE 802.11 standard. Our system employs beacons to broadcast identifying packets from strategic positions within a building infrastructure in such a way that each resolvable position is covered by a unique collection of beacons;a user of such a system can thus determine his location by means of the beacon packets received. The locations from which beacons broadcast is determined from a formalization of the problem based on identifying codes over arbitrary graphs. We present experimental evidence that our location detecting system is practical and useful, and that it can achieve good accuracy even with a very small number of beacons. © IFIP International Federation for Information Processing 2004.

关键词： Location

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Functional optical coherence tomography of neurophysiology

Functional optical coherence tomography of neurophysiology

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Biomedical Topical Meeting, BIOMED 2004

作者： Boppart, Stephen A. Lazebnik, Mariya Vinegoni, Claudio Bowonder, Anupama Marks, Daniel L. Gillette, Rhanor Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology Bioengineering Program College of Medicine University of Illinois at Urbana-Champaign 405 N. Mathews Ave. UrbanaIL61801 United States Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign United States Department of Molecular and Integrative Physiology University of Illinois at Urbana-Champaign United States

Functional optical coherence tomography (fOCT) is used to record optical changes that correspond to spontaneous and stimulated electrical activity in neural tissue. FOCT provides a high-resolution, real-time, non-inva... 详细信息

ISBN: (纸本)1557527695

关键词： Optical tomography

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Carbon nanotube growth from Cu–Co alloys for field emission applications

Journal of Vacuum Science & Technology B: Microelectronics a...

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Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena 2004年第3期22卷 1286-1289页

作者： W. Hofmeister W. P. Kang Y. M. Wong J. L. Davidson Interdisciplinary Graduate Program in Material Science Vanderbilt University Nashville Tennessee 37235 Interdisciplinary Graduate Program in Material Science and Department of Electrical Engineering and Computer Science Vanderbilt University Nashville Tennessee 37235 Department of Electrical Engineering and Computer Science Vanderbilt University Nashville Tennessee 37235

We have developed a method of catalyst preparation for carbon nanotube (CNT) growth that uses solid-state diffusion to precipitate Co particles in a Cu matrix and control the size and size distribution of catalyst particles. Copper is an excellent electrical and thermal conductor, and has a small or negligible solubility for Co. Cu–Co alloys of approximately 5 atm% Co were formed in bulk by splat quenching the liquid alloy and on Si substrates by e-beam evaporation of the alloy, sputtering of the alloy, and sputter deposition of thin films of pure Cu and Co. The Co easily precipitates from dilute solutions of Cu–Co with heat treatment. These alloys and films were used to generate uniform distributions of Co precipitates, and CNTs were successfully grown by plasma enhanced chemical vapor deposition (PE-CVD) and thermal CVD on the materials. These alloys can be patterned by photolithography and sputtering in order to grow CNTs in defined locations. Therefore, the technique is amenable to very large scale silicon integration for field emission applications. The results of this work and data from field emission studies are presented herein.

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System dynamics of supply chain network organization structure

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Information Systems and e-Business Management 2004年第2期2卷 187-206页

作者： Zhang, Yong Dilts, David Management of Technology Program Vanderbilt University Electrical Engineering & Computer Science Department School of Engineering Nashville USA Owen Graduate School of Management Vanderbilt University Nashville USA

Information technology is providing manufacturers with additional flexibility with regard to their supply chain network choices. Our research studies supply chain network organization structures categorized by the organic and mechanistic management control structures. The structural impacts on cost and fill rate performance are studied in two-echelon and two-supply-chain network organization models under different market coordination conditions using system dynamic simulations. Our results show significant effects of demand and network structural factors, and their interactions, on these measures. As demand becomes dynamic, the cooperative interaction model, where supply chains cooperate to satisfy customer demand, is found to have better system performance than the competitive supply chain model. The analysis also suggests that increasing the responsiveness at the downstream plant is particularly important to the overall system performance improvement.

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