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Frontiers in Education (FIE) Conference

作者： F.F. Driscoll B.A. Karanian R. Villanucci S. Kerns Electromechanical Engineering Program Wentworth Institute of Technology Boston MA USA Electrical and Computer Engineering Vanderbilt University Nashville TN USA

engineering Criteria 2000 require open and clear exchange between ABET evaluators and the administrators and program facility seeking evaluation. The Criteria encourage innovations in both programs and leadership by providing the opportunity and responsibility for defining unique program objectives. Under engineering Criteria 2000, evaluators are charged to accept these program-specific objectives and to determine whether programs meet their stated goals, a process quite different from the application of pre-determined criteria. This new accreditation process necessitates enhanced communication between program representatives and evaluators. This paper provides a view of the evaluation process from several perspectives. A new Electromechanical engineering program, evaluated in the fall of 1998, is the focus of several points of view; the chairperson of the program, program faculty, program students, and an EAC evaluator. The effect of Criteria 2000 on program processes, the steps required for visit preparation and for the visit itself; and the post-visit effects of constructive feedback from ABET evaluators are detailed. The ways in which novel programs are fostered and encouraged by Criteria 2000 receives particular emphasis. program administrator evaluator faculty and student perspectives of the accreditation process experience are illustrated. While new program evaluations are especially challenging for all concerned, evaluator and program participants alike can find Criteria 2000 evaluations opportunities for discovering ways to improve engineering education.

关键词： Accreditation History Educational institutions Knowledge engineering Mechanical engineering Levee engineering education Speech Government electrical engineering

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Performance of Turbo Trellis-Coded Modulation (T-TCM) on frequency-selective rayleigh fading channels

Performance of Turbo Trellis-Coded Modulation (T-TCM) on fre...

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1999 IEEE International Conference on Communications, ICC 1999

作者： Ha, Nguyen Hoang Rajatheva, R.M.A.P. Department of Electrical and Computer Engineering University of Manitoba WinnipegMBR3T 5V6 Canada Telecommunication Program School of Advanced Technologies Asian Institute of Technology P.O Box 4 Pathumthani12120 Thailand

ISBN: (纸本)078035284X

Turbo Trellis-Coded Modulation (T-TCM) is one of several techniques for combining turbo codes with multilevel modulation in order to save the bandwidth of the transmission systems. T-TCM was shown to perform very well on AWGN channel, but its performance over frequency-selective fading channel is still unknown. In this paper, a system model to investigate the performance of T-TCM schemes over frequency-selective fading channel is proposed. Simulation results show that when appropriate receiver is available, T-TCM also performs well on frequency-selective fading channels. T-TCM performance is much better than any other coded-modulation scheme in the past for this type of channel. © 1999 IEEE.

关键词： Turbo codes

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Performance of turbo trellis-coded modulation (T-TCM) on frequency-selective Rayleigh fading channels

Performance of turbo trellis-coded modulation (T-TCM) on fre...

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IEEE International Conference on Communications (ICC)

作者： Hguye Hoang Ha R.M.A.P. Rajatheva Department of Electrical and Computer Engineering University of Manitoba Winnipeg MAN Canada Telecommunication Program School of Advanced Technologies Asian Institute of Technology Pathum Thani Thailand

Turbo trellis-coded modulation (T-TCM) is one of several techniques for combining turbo codes with multilevel modulation in order to save the bandwidth of the transmission systems. T-TCM was shown to perform very well on AWGN channels, but its performance over frequency-selective fading channels is unknown. In this paper, a system model to investigate the performance of T-TCM schemes over frequency-selective fading channels is proposed. Simulation results show that when an appropriate receiver is available, T-TCM also performs well on frequency-selective fading channels. T-TCM performance is much better than any other coded-modulation scheme for this type of channel.

关键词： Frequency modulation Fading Turbo codes Modulation coding Iterative decoding Bandwidth AWGN channels Bit error rate Filters Iterative algorithms

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Proximal femoral density patterns are consistent with bicentric joint loads

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computer Methods in Biomechanics and Biomedical engineering 1999年第4期2卷 271-283页

作者： Fischer, Kenneth J. Jacobs, Christopher R. Levenston, Marc E. Cody, Dianna D. Carters, Dennis R. Musculoskeletal Research Center Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh PA 15213 United States Department of Orthopaedics Musculoskeletal Research Laboratory Pennsylvania State University School of Medicine Hershey PA 17033 United States Department of Electrical Engineering and Computer Science Continuum Elect romechanics Mhoratory Massachusetts Institute of Technology Hershey MA 02139 United States Department of Diagnostic Radiology Division of Radiologic Physics and Engineering Henry Ford Hospital Detroit MI 48202 United States Department of Veterans Affairs Medical Center Rehabilitation Research and Development Center Palo Alto CA 94304-1200 United States Department of Mechanical Engineering Stanford University Biomechanical Engineering Program Stanford CA 94305-402 United States

We developed an alternate method for density-based load estimation and applied it to estimate hip joint load distributions for two femora. Two-dimensional finite element models were constructed from single energy quantitative computed tomography (QCT) data. Load estimation was performed using five loading regions on the femoral head. Within each loading region, individual nodal loads, normal to the local surface, were supplied as input to the load estimation. An optimization procedure independently adjusted individual nodal load magnitudes in each region, and the magnitudes of muscle forces on the greater trochanter, such that the applied tissue stimulus approached the reference stimulus throughout the model. Dominant estimated load resultant directions were generally consistent with published experimental data for loads during gait. The estimated loads also suggested that loads near the extremes of the articulating surface may be important (even required) for development and maintenance of normal bone architecture. Estimated load distributions within nearly all regions predicted bicentric loading patterns, which are consistent with observations of hip joint incongruity. Remodeling simulations with the estimated loads predicted density distributions with features qualitatively similar to the QCT data sets. This study illustrates how applications of density-based bone load estimation can improve understanding of dominant loading patterns in other bones and joints. The prediction of bicentric loading suggests a very fine level of local adaptation to details of joint loading. © 1999 OPA (Overseas Publishers Association) N.V.

关键词： Finite element method

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A comparison of ada and pascal in an introductory computer science course 98

A comparison of ada and pascal in an introductory computer s...

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1998 Annual ACM SIGAda International Conference on Ada, SIGAda 1998

作者： Murtagh, Jeanne L. Hamilton, John A. Software Professional Development Program Air Force Institute of Technology Wright-Patterson AFBOH45433-7765 United States US Army D/Electrical Engineering and Computer Science United States Military Academy West PointNY10996-1787 United States

ISBN: (纸本)1581130333

Pascal's long and successful run at West Point illustrated Winston Churchill's dictum that, "The absence of alternatives clears the mind wonderfully." However, by the mid-90s, the United States Military Academy was finding that Pascal, long the educational workhorse, was no longer the clear choice for serious computer science education. The decision was taken to evaluate alternatives to Pascal. The criteria selected for programming language evaluation were student learning outcomes based on course goals and objectives. The controlled educational environment of a service academy provides an excellent opportunity to conduct research using control groups and experimental groups. We conducted a side by side comparison of the use of Pascal, which was specifically designed for instructional purposes, and Ada in an introductory course. The experiment demonstrated that students were much more successful in Ada than in Pascal, and led to the revision of the Academy core curriculum to use Ada 95 in our introductory computer science class. This paper discusses the details of our comparison, citing specific examples to illustrate a rational basis for evaluating programming language features against course objectives.

关键词： Students

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Floating-gate CMOS analog memory cell array

Floating-gate CMOS analog memory cell array

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： R.R. Harrison P. Hasler B.A. Minch Computation and Neural Systems Program 139-74 California Institute of Technology NASA Pasadena CA USA Department of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA School of Electrical Engineering Cornell University Ithaca NY USA

The complexity of analog VLSI systems is often limited by the number of pins on a chip rather than by the die area. Currently, many analog parameters and biases are stored off chip. Moving parameter storage on chip could save pins and allow us to create complex programmable analog systems. In this paper, we present a design for an on-chip non-volatile analog memory cell that can be configured in addressable arrays and programmed easily. We use floating-gate MOS transistors to store charge, and we use the processes of tunneling and hot-electron injection to program values. We achieve greater than 13-bit precision with no crosstalk between memory cells.

关键词： Nonvolatile memory Analog memory Pins Voltage Potentiometers Tunneling Very large scale integration Secondary generated hot electron injection Analog computers CMOS technology

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A new estimation formula for minimum filter length of optimum FIR digital filters

A new estimation formula for minimum filter length of optimu...

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International Conference on Signal Processing Proceedings (ICSP)

作者： K. Ichige M. Iwaki R. Ishii Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki Japan Japan Advanced Institute of Science and Technology Tatsunokuchi Ishikawa Japan Division of Electrical and Computer Engineering Yokohama National University Yokohama Japan

This paper presents an accurate estimation formula for the minimum filter length of optimum (the minimax criterion-based) FIR low-pass digital filters. The authors have proposed an accurate estimation formula for the particular case that the passband and stopband ripples are identical. Now we expand the formula for the general case. The accuracy of the proposed formula is evaluated in comparison with that of the conventional formulae. We also describe how to apply the proposed formula for the design of other types of filters.

关键词： Digital filters Finite impulse response filter Low pass filters Design optimization Algorithm design and analysis Iterative algorithms Passband Cutoff frequency Minimax techniques Iterative methods

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A New Estimation Formula for Minimum Filter Length of Optimum FIR Digital Filters

A New Estimation Formula for Minimum Filter Length of Optimu...

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1998 Fourth International Conference Signal Processing

作者： Koichi Ichige Mamoru Iwaki Rokuya Ishii Doctoral Program in Engineering University of TsukubaTsukubaIbaraki 305-8573Japan Japan Advanced Institute of Science and Technology TatsunokuchiIshikawa 923-1292Japan Division of Electrical and Computer Engineering Yokohama National UniversityYokohama 240-8501Japan

This paper presents an accurate estimation formula for the minimum filter length of optimum(the minimax criterion based) FIR low-pass digital *** authors have proposed an accurate estimation formula for the particular case that the passband and stopband ripples are *** we expand the formula for the general *** accuracy of the proposed formula is evaluated in comparison with that of the conventional *** is also described how to apply the proposed formula for the design of other types of filters.

关键词： FIR A New Estimation Formula for Minimum Filter Length of Optimum FIR Digital Filters Filter

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Applying fuzzy functions and sequential coordination to optimization of machinery arrangement and pipe routing

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NAVAL ENGINEERS JOURNAL 1998年第6期110卷 43-54页

作者： Wu, BC Young, GS Schmidt, W Choppella, K Dr. Bi-Chu Wu:received a PhD in Mechanical Engineering from the University of Maryland College Park in 1991. She has worked on projects involving naval architecture design optimization solid mechanics and database development. Presently a senwr engineer with Angle Incorporated Dr Wu's research interests are in design optimization and fuzzy logic applications. Dr. Gin-Shu Young: a senior engineer with Angle Incorporated holds a PhD in Mechanical Engineering from the University of Maryland College Park. As a guest researcher with National Institute of Standards and Technologies from 1990 to 1993 he worked on vision-based navigation for autonomous vehicles. His experience also includes applications of optimization fuzzy logic neural network and genetic algorithm methods to engineering system design Mr. William Schmidt:co-founded Angle Incorporated in 1990 and has served as Vice PresidentlChiefScientist during this tame. He holds a B.Sc. in Applied Science from the Naval Acadt?my and an M.Sc. in Physics from the Naval Post Graduate School. He has cner 20 years experience in technical leadership material and personnel management. He has led the application of computer aided design (CAD) and Product Model Information Exchange to the shipbuilding industry. His experience also includes leading the amlication of model based operational analysis to support the Live Fire Test Program for DDG 51 Class Destroyers. Mr. Krishna M. Choppella:is a Sofware Engineer at Eidea Laboratories Incotporated where he works on componentbased distributed enterpvise frameworks. He has been involved in creating data analysis tools for the US Nay by integrating CAD modeis databases and graphical front ends. His work in the Masters degree program in Mechanical Engineering at the University of Texas at Austin was in di0ddase.r spectroscopy of combustion products in porous-matri burners. He received his Bachelors degree in Electrical Engineering in India. He was a Research Associate at the Centre for Laser Technology and Project Engi

Ship design is often multidisciplinary involving several design elements with various types of objectives and constraints (O/C) some easily described as mathematical formulas, others better modeled as descriptive assertions. This paper describes a method based on fuzzy functions and an integrated performance index to model O/C using descriptive assertions to be used with mathematical formulas in optimization. Another issue addressed in this paper concerns the coordination of design elements when sequentially coupled, that is, when one leads the other and the performance of the follower depends greatly on the design of the leader. Based on neuro-fuzzy techniques, the method described here coordinates and optimizes sequentially coupled elements. The two methods are applied to machinery arrangement (MA) and pipe routing (PR). Preliminary models for optimization of MA and PR are described considering convenience, producibility: engine room size, interference and location as factors in the O/C set. Some test results from MA/PR applications are presented and discussed. The methods are generic and can be extended to other elements in ship design. They are mutually independent and may be used separately Two advantages of their use are an improvement in overall performance and a reduction in the need for redesign of elements.

关键词： Optimization

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Incorporating contextual information in white blood cell identification 97

Incorporating contextual information in white blood cell ide...

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Proceedings of the 11th International Conference on Neural Information Processing Systems

作者： Xubo Song Yaser Abu-Mostafa Joseph Sill Department of Electrical Engineering California Institute of Technology Pasadena CA Dept. of Electrical Engineering and Dept. of Computer Science California Institute of Technology Pasadena CA Computation and Neural Systems Program California Institute of Technology Pasadena CA

In this paper we propose a technique to incorporate contextual information into object classification. In the real world there are cases where the identity of an object is ambiguous due to the noise in the measurements based on which the classification should be made. It is helpful to reduce the ambiguity by utilizing extra information referred to as context, which in our case is the identities of the accompanying objects. This technique is applied to white blood cell classification. Comparisons are made against "no context" approach, which demonstrates the superior classification performance achieved by using context. In our particular application, it significantly reduces false alarm rate and thus greatly reduces the cost due to expensive clinical tests.

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