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118th ASEE Annual Conference and Exposition

作者： Oliveira, Aurenice Menezes Lima Jr., Ivan T. Electrical Engineering Technology Program Michigan Technological University Houghton MI United States Department of Electrical and Computer Engineering North Dakota State University United States

Nowadays, engineering graduates are required to work in an increasingly globalized world, where most large engineering projects currently require multi-national teams of multidisciplinary professionals to work together and, therefore, a better understanding of the global economy, communication skills, cultural awareness, and interpersonal skills are critical to engineers. In this context, universities around the world are increasingly moving to establish international partnerships in their educational and research programs. One of the main purposes of international programs is to provide students value-added technical and cultural experiences. Study abroad programs are recognized as high-impact educational experiences. However, engineering students typically do not have the same variety of offerings of international program as students of other disciplines have, such as humanities or social science students. In this paper, the authors provide an overview of the critical aspects of developing a consortium among two universities in the U.S. and two Brazilian universities with the goal of establishing a self-sustainable student exchange program in undergraduate engineering education, and to increase the participation of U.S. students in international experiences. The activities in this program include the establishment of an agreement betweenthe institutions, the implementation of a course transfer process, and the development of aprocedure for foreign language training and cultural preparation. In addition, we also discuss thekey lessons learned over the first three years of the program. Our program is under the auspices of the U.S. department of Education's Fund for theImprovement of Postsecondary Education (FIPSE) on the U.S. side, and under the auspices ofthe Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior (CAPES) of the BrazilianMinistry of Education, on the Brazilian side. © 2011 American Society for engineering Education.

关键词： Students

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Changing power generation portfolios of U.S. utilities towards renewables

Changing power generation portfolios of U.S. utilities towar...

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Annual International Conference of the American Society for engineering Management 2011, ASEM 2011

作者： Sireli, A. Yesim Ozan, Erol Systems Engineering and Engineering Management Program University of North Carolina Charlotte United States Department of Technology Systems College of Technology and Computer Science East Carolina University Greenville NC United States

ISBN: (纸本)9781618393616

This research examines U.S. electric utilities' transition from closed to open systems, while taking steps towards market orientation and subsequent changes in their product portfolios. It lists the reasons driving this change and includes a detailed analysis of the current product portfolios of the U.S. utilities focusing on adding more renewable energy sources. Copyright, American Society for engineering Management, 2011.

关键词： Electric utilities

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The ABCs of Experimental Evolution

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International Scholarly Research Notices 2013年第1期2013卷

作者： Zaid Abdo Mathew Stein Andrzej Wojtowicz Kim M. Pepin Departments of Statistics University of Idaho Moscow ID 83844 USAuidaho.edu Department of Mathematics University of Idaho Moscow ID 83844 USAuidaho.edu Program of Bioinformatics and Computational Biology (BCB) University of Idaho Moscow ID 83844 USAuidaho.edu USDA-ARS South Atlantic Area 950 College Station Road Athens GA 30605-2720 USA Department of Computer Engineering University of Idaho Moscow ID 83844 USAuidaho.edu Micron Technology Inc. Boise ID 83716 *** Department of Animal Sciences Washington State University Pullman WA 99164 USAwsu.edu Fogarty International Center National Institutes of Health 31 Center Drive MSC 2220 Bethesda MD 20892-2220 USAfic.nih.gov Department of Biology Colorado State University Campus Delivery 1878 Fort Collins CO 80523 USAcolostate.edu

Microbial evolution is complex and is influenced by many sources of variation. Experimental evolution is no exception, although it is more controlled, easily replicated, and typically devoid of interactions between species. Mathematical modeling of the evolutionary process can help in understanding the underlying mechanisms that drive outcome of such experiments. These models can be complex and parameter rich, limiting their feasibility for statistical inference. In this paper, we introduce the use of Approximate Bayesian Computation (ABC) as a tool for statistical inference in the study of experimental evolution. ABC is a fast and simple method for fitting complex models to data. We utilize this method, coupled with a mechanistic model of experimental evolution, to study the evolution process of bacteriophage ϕ X174 under benign selection pressure. Our results highlight three mutation-selection scenarios that could explain this process: high mutation/low selection pressure, low mutation/high selection pressure, and low mutation/low selection pressure, with posterior support of 19%, 9.5%, and 71.5% for each of these scenarios, respectively. Sequence data support the first candidate. Though surprising, this scenario was not improbable based on our analysis.

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An implementation of a 2D FIR filter using the signed-digit number system

An implementation of a 2D FIR filter using the signed-digit ...

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Saudi International Electronics, Communications and Photonics Conference 2011, SIECPC 2011

作者： Seddiq, Yasser Mohammad Altwaijry, Hesham National Program of Electronics Communications and Photonics King Abdulaziz City for Science and Technology Saudi Arabia Department of Computer Engineering King Saud University Saudi Arabia

ISBN: (纸本)9781457700699

An FIR filter is implemented in this work. Enhancing the arithmetic operations of the filter is considered. For the addition operation, the signed-digit number system is utilized. For the multiplication operation, Booth-3 algorithm is used to reduce the number of partial products. Then a 1D filter is used to construct a 2D filter that is deployed on real hardware in an image processing application. © 2011 IEEE.

关键词： Digital signal processing

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Visualization of signalized intersections in driving simulator and validity of driving behaviors in virtual environments

Advances in Transportation Studies

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Advances in Transportation Studies 2012年第26期 17-28页

作者： Yan, X. Abdel-Aty, M. Guo, D. Radwan, E. MOE Key Laboratory for Transportation Complex Systems Theory and Technology Beijing Jiaotong University Beijing 100044 China Department of Civil and Environmental Engineering University of Central Florida Orlando FL 32816-2450 United States Computer Science Program College of Business Florida Gulf Coast University 10501 FGCU Boulevard South Fort Myers FL 33965-6565 United States Center for Advanced Transportation Systems Simulation University of Central Florida Orlando FL 32816-2450 United States

Visualization of highway traffic environments in virtual reality plays a key role on fidelity of simulation and validity of driving behaviors in driving simulator studies. This paper describes a procedure to replicate a signalized intersection with many complex features into a driving simulator's 3-D databases through building a graphical visual database, constructing a road motion database, and creating simulated traffic. The validity of the visualization was assessed via the comparison of the drivers' speeds in the simulator and the speed data at the real intersection. It was found that both speed data follow normal distributions and have equal means for each intersection approach;however, that the speeds measured in the driving simulator have a larger variability than those measured in the field. The users' subjective evaluation results indicated that 92% subjects could recognize the simulated intersection in the driving simulator experiment. Therefore, the strategy of geo-specific environment modeling would be useful for studying driving behaviors in virtual environments.

关键词： Visualization

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A parallel Ray Tracing architecture suitable for application-specific hardware and GPGPU implementations

A parallel Ray Tracing architecture suitable for application...

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2011 14th Euromicro Conference on Digital System Design: Architectures, Methods and Tools, DSD 2011

作者： Nery, Alexandre S. Nedjah, Nadia Franca, Felipe M.G. Jozwiak, Lech LAM - Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering Universidade do Estado Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands

ISBN: (纸本)9780769544946

The Ray Tracing rendering algorithm can produce high-fidelity images of 3-D scenes, including shadow effects, as well as reflections and transparencies. This is currently done at a processing speed of at most 30 frames per second. Therefore, actual implementations of the algorithm are not yet suitable for interactive real-time rendering, which is required in games and virtual reality based applications. Fortunately, the algorithm allows for massive parallelization of its computations. In this paper, we present a parallel architecture for ray tracing based on a uniform spatial subdivision of the scene and exploiting an embedded computation of ray-triangle intersections. This approach allows for a significant acceleration of intersection computations, as well as, a reduction of the total number of the required intersections checks. Furthermore, it allows for these checks to be performed in parallel and in advance for each ray. In this paper we discuss and analyze an ASIP-based implementation using FPGAs and a GPGPU-based parallel implementation of the proposed architecture. The performance of both implementations are reported and compared." © 2011 IEEE.

关键词： Ray tracing

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Strategies for pathway-based analysis of genome-wide SNP data

Strategies for pathway-based analysis of genome-wide SNP dat...

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2011 Defense Science Research Conference and Expo, DSR 2011

作者： Patumcharoenpol, P. Chan, J. Prom-On, S. Meechai, A. Bioinformatics and Systems Biology Program King Mongkut's University of Technology Thonburi Bangkok Thailand School of Information Technology King Mongkut's University of Technology Thonburi Bangkok Thailand Computer Engineering Department King Mongkut's University of Technology Thonburi Bangkok Thailand Department of Chemical Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Biological Engineering Program King Mongkut's University of Technology Thonburi Bangkok Thailand

ISBN: (纸本)9781424492763

Numerous genome-wide association studies (GWAS) have been performed in order to determine the susceptible loci of diseases. However, most diseases still cannot be explained by a single locus. Pathway-based methods address this problem by combining those small effects into groups of related genes or pathways. However, because pathway-based approaches consist of multiple steps, there is much room for improvement. This paper presents an improved method for translating list of SNPs from GWAS into list of genes. We incrementally adjusted and compared different modifications applied to Parkinson's disease (PD) genome-wide SNP data and then used GSEA-P to analyze the resulting list of genes. After careful adjustments, we are able to identify more relevant pathways that were not found previously. © 2011 IEEE.

关键词： Genes

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Organic Thin Film Transistor architecture, parameters and their applications

Organic Thin Film Transistor architecture, parameters and th...

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International Conference on Communication Systems and Network Technologies

作者： Mittal, Poornima Kumar, Brijesh Negi, Y.S. Kaushik, B.K. Singh, R.K. Electronics and Communication Engineering Graphic Era University-Dehradun Dehradun India Polymer Science and Technology Program DPT Indian Institute of Technology-Roorkee Roorkee India Department of Electronics and Computer Engineering Indian Institute of Technology-Roorkee Roorkee India Electronics and Communication Engineering Uttarakhand Technical University-Dehradun Dehradun India

ISBN: (纸本)9780769544373

Organic Thin Film Transistors (OTFTs) are promising devices for future development of variety of low-cost and large-area electronics applications such as flexible displays. This paper analyzes the performance of OTFT made of several organic semiconducting and insulating materials and further discusses their applications. Analysis of previous research work demonstrates that the mobility in OTFT decreases when the product of semiconducting film thickness and gate capacitance per unit area increases. The decrease is specified by a power law function with parameters for several organic semiconductors. OTFT characteristics have undergone spectacular improvements during the last few years. This paper explores the effect of variation of channel length from 40 nm to 20 nm on drain current for pentacene bottom contact structure. Variations in these quantities maps to variations in the electrical behaviour of devices. It has been found that drain current increases due to decrease in length of organic thin film conducting channel. It reviews recent progress in parameter properties for device designs and applications related to OTFTs. The performance of OTFTs is evaluated in terms of mobility, on/off current ratio, threshold voltage and sub threshold slope. This paper thoroughly discusses the overall performance and applications of OTFTs in various fields. © 2011 IEEE.

关键词： Drain current

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Execution characteristics of embedded applications on a Pentium 4-based personal computer

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Journal of Embedded Computing 2011年第3,4期4卷 107-116页

作者： Nair, P.S. Kudithipudi, D. John, E.B. Hudson, F.W. Computer Engineering Program California State University-Fullerton Fullerton CA USA Department of Computer Engineering Rochester Institute of Technology Rochester NY USA Department of Electrical and Computer Engineering University of Texas San Antonio TX USA

The analysis and evaluation of the speed performance of personal computers for various classes of applications continues to be an important area of research. One such class of applications is that of embedded applications. Embedded applications such as VOIP, streaming video and image processing software etc. are used significantly in the personal computer domain. In this paper, we analyze the execution characteristics of a subset of widely used embedded applications on a general personal computer based on the Intel Pentium 4 microprocessor. It was observed that, for most of the applications chosen here, the combination of lower trace cache hit rates and lower L1 cache load hit rates may have a more adverse impact on the performance of this machine when compared to other parameters such as L2 cache load hit rates, branch prediction rates, etc. The overall L2 cache load hit rates, branch prediction rates and TLB hit rates were found to be fairly high. Hardware improvements over the trace cache and L1 cache structures of the chosen machine could help improve performance for many of these applications.

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Hardware reuse in modern application-specific processors and accelerators

Hardware reuse in modern application-specific processors and...

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2011 14th Euromicro Conference on Digital System Design: Architectures, Methods and Tools, DSD 2011

作者： Nery, Alexandre S. Jozwiak, Lech Lindwer, Menno Cocco, Mauro Nedjah, Nadia França, Felipe M.G. LAM - Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering Universidade do Estado do Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands Silicon Hive - Intel UMG Netherlands

ISBN: (纸本)9780769544946

Effective exploitation of the application-specific parallel patterns and computation operations through their direct implementation in hardware is the base for construction of high-quality application-specific (re-) configurable application specific instruction set processors (ASIPs) and hardware accelerators for modern highly-demanding applications. Although it receives a lot of attention from the researchers and practitioners, a very important problem of hardware reuse in ASIP and accelerator synthesis is clearly underestimated and does not get enough attention in the published research. This paper is an effect of an industry and academic collaborative research. It analyses the problem of hardware sharing, shows its high practical relevance, as well as a big influence of hardware sharing on the major circuit and system parameters, and its importance for the multi-objective optimization and tradeoff exploitation. It also demonstrates that the state-of-the-art synthesis tools do not sufficiently address this problem and gives several guidelines related to enhancement of the hardware reuse. © 2011 IEEE.

关键词： Multiobjective optimization

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