The evaluation of class problems being worked and explained by the instructor and then provided via the Internet to an introductory engineering circuit analysis class, was described using problem-solving videos (PSV)....
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The evaluation of class problems being worked and explained by the instructor and then provided via the Internet to an introductory engineering circuit analysis class, was described using problem-solving videos (PSV). The majority of the students reported their study procedure was to review the PSVs numerous times in a step-by-step approach. This indicated that the study tools provided were being used by the students to enhance their problem-solving skills on an individual basis. The results show that students can benefit, if provided study aids that are designed to address their study procedures outside of class.
This paper proposes an efficient method to implement RSA decryption algorithm. RSA cryptosystem is the most attractive and popular security technique for many applications, such as electronic commerce and secure inter...
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Distributed active storage architectures are designed to offload user-level processing to the peripheral from the host servers. In this paper, the author reports preliminary investigation on performance and fault reco...
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ISBN:
(纸本)9781932415582
Distributed active storage architectures are designed to offload user-level processing to the peripheral from the host servers. In this paper, the author reports preliminary investigation on performance and fault recovery designs, as impacted by emerging storage interconnect protocols and novel state-of-the-art storage devices. Empirical results obtained using validated device-level and interconnect data demonstrate the significance of the said parameters on the overall system performance and reliability.
Drexel University has instituted an across-the-board policy requiring all students to complete three Writing Intensive (WI) courses after their freshman year. The freshman and sophomore years at Drexel, called The Dre...
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Drexel University has instituted an across-the-board policy requiring all students to complete three Writing Intensive (WI) courses after their freshman year. The freshman and sophomore years at Drexel, called The Drexel engineering Curriculum (TDEC), are an integrated experience in engineering, science and humanities. Two of the courses must be within the student's major, while the third can be in any discipline. Presently, there are over 200 WI classes at Drexel. Undergraduates, representing all majors are trained and paid peer tutors who work with 10-15 students in a specific writing intensive class. Peer tutors read drafts of student writing. One of the hallmarks of the program is that it is not housed in the English Department. Because of its location within the University's Honors program, the program's dual mission is to create a culture of writing at Drexel. The ECE Department has decided to exceed the minimum of two writing intensive courses within the CE and EE degree programs by changing four lab and design oriented courses to the WI style. The ECE WI courses are required for all EE and CE students, with the exception of some bachelors-masters students. In this paper we will describe how ECEL 301, a third year laboratory course, and ECE 491, the first quarter of Senior Design, were modified to meet the new requirements. Changes to course schedules and assignments as well as the development of writing assessment tools have been required. End-of-term assessment tools will be modified to collect feedback on the effectiveness of the program.
Transmission line construction projects may face resistance from multiple sources. Much of the opposition can be attributed to specific features of the terrain, such as rivers, forests, railroads, and gas lines. Other...
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Transmission line construction projects may face resistance from multiple sources. Much of the opposition can be attributed to specific features of the terrain, such as rivers, forests, railroads, and gas lines. Other features, however, are not in specific locations, but follow and vary along the entire length of the line. These non-point impacts include the line's visual impact, magnetic and electric fields, and radio and audible noise. This paper explores these features and their effects on routing decisions. A method of incorporating them into a Geographic Information System (GIS) has been developed to analyze their effects in and around the proposed right of way. An example is provided using data from the El Segundo Power Redevelopment project.
The City of El Paso is a rapidly growing community located on the US-Mexico border that has a largely Hispanic population. The region can be categorized as under-educated and socio-economically disadvantaged. For a nu...
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The City of El Paso is a rapidly growing community located on the US-Mexico border that has a largely Hispanic population. The region can be categorized as under-educated and socio-economically disadvantaged. For a number of reasons, most students graduating from El Paso area high schools are under-prepared in mathematics and science and thus are at a disadvantage in pursuing engineeringprograms at the post secondary level. The Texas PreFreshman engineeringprogram (TexPREP) seeks to identify high-achieving middle and high school students with interests in science, engineering and mathematics and to enhance their preparation in these fields and thus increase their likelihood of succeeding in college. TexPREP is an academically intense eight-week summer program, which stresses the development of abstract reasoning, problem solving skills, and their applications. The Pan American Center for Earth and Environmental Studies (PACES) is a NASA University Research Center on the UTEP campus. In addition to its mission to contribute research in support of NASA's Earth Science Strategic Enterprise, PACES seeks to promote science, engineering and mathematics awareness among K-12 students, especially those with minority and socio-economically disadvantaged backgrounds. In 2001, collaboration between TexPREP and PACES began with the objective of using activities with space-oriented themes as a means to stimulate student interest in science, engineering and mathematics. Over the past two summers, a variety of activities have been conducted. These include (1) Remote sensing and image interpretation, (2) CricketSat electronic telemetry device activity, (3) Protein Crystal Growth experiment, (4) Rover design competition (5) "Mission to Mars" play, and (6) Field trips to NASA facilities. This paper presents a description of these space-oriented program components and some results from the evaluation of the program.
In Fall 2000, the Clark School of engineering at the University of Maryland, in cooperation with the Smith School of Business, created a unique residential entrepreneurship educational model - the Hinman Campus Entrep...
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In Fall 2000, the Clark School of engineering at the University of Maryland, in cooperation with the Smith School of Business, created a unique residential entrepreneurship educational model - the Hinman Campus Entrepreneurship Opportunities (CEOs) program. The program is based on an input/output model in which the input is undergraduate students with a strong entrepreneurial drive;the system is an incubator-like entrepreneurial community environment and a variety of resources including education, networking, teaming and mentoring;and the output is students with substantial entrepreneurial knowledge and experience in operating real companies. This paper profiles four venture models operated by current Hinman CEOs students including students who are creating both high-tech and low-tech for-profit businesses.
Distributed Energy Resources (DER) have been receiving increasing attention over the past decade. DERs are most effective at or near centers of utilization. Eventually, as their penetration increases, they will be int...
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Distributed Energy Resources (DER) have been receiving increasing attention over the past decade. DERs are most effective at or near centers of utilization. Eventually, as their penetration increases, they will be interconnected in a grid-like fashion for stability and enhanced reliability. These grids, called 'microgrids,' will be expected to operate in both grid-connected and islanded modes. This paper presents a rational method of building micro-grids optimized for cost and subject to reliability constraints. The method is based on dynamic programming and consists of determining the optimal interconnection between microsources and load points, given their locations and the rights of way for possible interconnections. A new approach, called 'unit link addition,' is also introduced. The paper describes the formulation, as well as its implementation on a parallel computing environment. Applications to both possible situations - design of a microgrid from scratch and expansion of an existing distribution system - are described. The method is demonstrated using a 22-bus system.
Globally, wind has become the fastest growing renewable energy resource for electric power generation. Competitive generation costs and advancing turbine technology coupled with the use of variable speed option and po...
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Globally, wind has become the fastest growing renewable energy resource for electric power generation. Competitive generation costs and advancing turbine technology coupled with the use of variable speed option and power electronics are some of the reasons for this impressive growth. Turbines are getting larger end more efficient at a rapid rate. Megawatt-scale units (1.5 to 2 MW) are becoming the standard and several larger (up to 5 MW) units are in various stages of development. Due to the inherent variability of the resource, the question of how the overall security of a power system will be affected by the insertion of wind generation need to be studied. Obviously, the nature and extent of the influence will depend on several factors such as wind regime, turbine design, level of penetration, time dependence of load, etc. A simplified approach based on "security index" is considered in this paper. The standard (24 bus) reliability test system is used in the study. Results are presented in the form of probability distribution junctions (pdf) for the security index obtained using the PDF of wind speed distributions and output characteristics of wind generation systems. Influences of scale and shape parameters of the wind speed distribution are considered in detail Based on the simulation results, some conclusions are drawn about the influence of wind electric generators and wind regimes on the security of a power system.
Most edge detection algorithms include three main stages: smoothing, differentiation, and labeling. In this paper, we evaluate the performance of algorithms in which competitive learning is applied first to enhance ed...
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ISBN:
(纸本)1604238216
Most edge detection algorithms include three main stages: smoothing, differentiation, and labeling. In this paper, we evaluate the performance of algorithms in which competitive learning is applied first to enhance edges, followed by an edge detector to locate the edges. In this way, more detailed and relatively more unbroken edges can be found as compared to the results when an edge detector is applied alone. The algorithms compared are K-Means, SOM and SOGR for clustering, and Canny and GED for edge detection. Perceptionally, best results were obtained with the GED-SOGR algorithm. The SOGR is also considerably simpler and faster than the SOM algorithm.
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