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Education, IEEE Transactions on

Issue 4 • Date Nov 1996

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Displaying Results 1 - 15 of 15
  • Laboratory exercises for practical performance of algorithms and data structures

    Publication Year: 1996 , Page(s): 526 - 531
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (528 KB)  

    This paper addresses the question of theoretical versus practical performance of algorithms and data structures. It describes an experiment the first author has been using in his data structures course to achieve the primary objective of comparing theoretical behavior of algorithms with their actual performance. It also presents enhancements in performance evaluation experiments and a general methodology that can be used to develop experiments in senior or first-year graduate courses in data structures, algorithm analysis, software engineering, and operating systems View full abstract»

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  • Emphasizing some little-used theorems in introductory network analysis

    Publication Year: 1996 , Page(s): 532 - 539
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (584 KB)  

    This paper promotes the use of some little-used but most valuable theorems that are available to students in introductory network analysis: the voltage and current shifting theorems; the voltage and current source theorems; the reduction theorem; and the substitution theorem. Examples illustrate how these theorems can be used to solve for one or more variables in the many networks that contain dependent as well as independent sources. Network simplification techniques are maximized and the use of equations is minimized. A more extensive use of the duality concept is also recommended View full abstract»

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  • Notebook versus desktop computers for cadets at West Point

    Publication Year: 1996 , Page(s): 497 - 504
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (876 KB)  

    Some universities require or recommend that their students purchase personal computers, and the trend is toward using the portable notebook variety. West Point cadets (students) are currently issued late-model, IBM-compatible desktop PCs on matriculation, and this study investigated the feasibility and desirability of issuing notebook computers to future incoming classes. As a pilot comparison, one classroom group of 18 students taking introductory courses in computers and mathematics was given notebook computers for one semester in place of their desktops. An additional 12 notebooks were evaluated to assess specialized technical features. The principal findings were that, at a constant dollar cost, notebook and desktop computers differ in computational power, durability, and ease of use. West Point concluded that they cannot move to notebook computers for incoming students until notebook durability (maturity of technology) is reasonable and until the disparity between the computational capability of comparably priced notebooks and desktops reaches an acceptable limit. They now see the technology maturing rapidly and are likely to move to notebook computers within three years View full abstract»

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  • A CAD tool for limit cycle prediction in nonlinear systems

    Publication Year: 1996 , Page(s): 505 - 511
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (592 KB)  

    The analysis of nonlinear control systems can be greatly improved by the use of computer software. In this paper, an interactive, user-friendly, graphically oriented toolbox based on Matlab is presented. Nonlinear systems whose nonlinearity is given by a relay are considered, and stability of free and forced oscillations is analyzed using the methods by Hamel, Tsypkin and Paquet. Nonlinear control systems with polynomial nonlinearity are also treated and analyzed using Hopf's theorem in the frequency domain. The structure of the code is described and some illustrative examples are presented to validate the software capabilities View full abstract»

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  • LADDER-a microcomputer tool for passive filter design and simulation

    Publication Year: 1996 , Page(s): 478 - 487
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (672 KB)  

    Modern analog filter designs fit into two categories: cascade prototypes; and ladder prototypes. Although software programs for cascade filters are common, the same cannot be said for ladder filters. In order to teach advanced topics such as element frequency transformations, simulated passive elements, leapfrog implementations, and switched capacitor implementations, students must be comfortable with passive filter design. The use of tables for ladder filter design is very complex and only offers a black box approach to the problem. Although many algorithms exist, most are too computationally complex to use in a classroom. A software package for advanced analog filter design and simulation has been developed. This new package has many features, including polynomial manipulation, transfer function design, and post design simulation. This paper includes a description of LADDER, along with some example filter designs, which help demonstrate LADDER's usefulness in education View full abstract»

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  • Experiments on a coupled oscillator

    Publication Year: 1996 , Page(s): 558 - 562
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (824 KB)  

    The theory of a symmetric and asymmetric coupled oscillator circuit with an arbitrary initial condition was verified by a novel experimental technique. The key for the success of these experiments is the use of the analog switches. These new electronic devices are very fast and have very low contact resistance when closed. With the help of these novel switches, one can set up any initial condition and place the circuit in a configuration identical to the one studied in theory, allowing direct comparison between theory and experiment. This new approach can be easily extended to other more complicated circuits. The technique is especially useful in studying the transient states of an electrical system and chaos in a nonlinear coupled oscillator, both of which depend on the initial conditions View full abstract»

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  • Obtaining J-K, D, and T excitation equations directly from state transition diagrams

    Publication Year: 1996 , Page(s): 519 - 525
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (488 KB)  

    This paper presents techniques for obtaining J-K, D, and T excitation equations for synchronous state machine designs directly from state transition diagrams. Classical designs using K-maps (Karnaugh maps) are time consuming to draw and difficult to use when large designs are involved. Computer tools are very valuable for assignments outside of the classroom, that is, for homework assignments, laboratory assignments, and special projects, but computers are not generally provided for student use on quizzes and exams. The techniques for obtaining flip-flop excitation equations presented in this paper apply to large or small designs. The excitation equations that are obtained usually need to be reduced prior to implementation. Although equation reduction is not the theme of this paper, some of the excitation equations will be obtained using algebraic reduction, K-map reduction, and computer tool reduction to allow comparisons to be made View full abstract»

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  • A new electronic manufacturing course for the electrical engineering curriculum

    Publication Year: 1996 , Page(s): 512 - 518
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (712 KB)  

    In this paper, an innovative model for course development that promotes a cooperation of educational institutions and a manufacturing company is described. This linkage, which provides state-of-the art technical education for senior students, resulted from the collaboration between the Purdue School of Engineering and Technology at Indianapolis (IUPUI) and the Electronic Manufacturing Productivity Facility (EMPF) and brings together the theoretical study, laboratory design, and actual product manufacturing of surface-mount printed-circuit assemblies. The impact of the course on electrical engineering graduates is discussed View full abstract»

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  • Time domain solutions to partial differential equations using SPICE

    Publication Year: 1996 , Page(s): 563 - 573
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (540 KB)  

    In this paper a method for using a time domain circuit code to solve partial differential equations is described. Rather than following the usual approach of developing a lumped-element circuit model, the partial differential equation is finite differenced in space and written in state variable form. The resulting system of coupled ordinary differential equations is then modeled by an array of coupled voltage dependent current sources connected to a string of capacitors. A preprocessor is used to write the network list in a form usable by the SPICE circuit analysis code. Examples for advection, diffusion, and electromagnetic propagation in one spatial dimension are given View full abstract»

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  • Number and density of states in quantum semiconductor structures

    Publication Year: 1996 , Page(s): 465 - 470
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (516 KB)  

    Pushed by the semiconductor industry to achieve greater speed and functionality, device dimensions are becoming sufficiently small to exhibit prominent quantum mechanical effects. In addition, devices are now being developed that utilize these quantum effects. The number and density of states are fundamentally important in the operation of any quantum device. Traditionally in a classroom setting, one-dimensional (1-D), two-dimensional (2-D), and three-dimensional (3-D) continuum approximations are presented to analyze the quantum wire, well, and box, respectively. As shown in this paper, the exact number and density of states can be straightforwardly calculated by students for real semiconductor quantum structures. These results clearly illustrate the overall true 3-D form of each of these structures. These correct calculations also reveal an overestimation in the number of states when using the continuum approximations View full abstract»

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  • A multiple-constructs framework for teaching control concepts

    Publication Year: 1996 , Page(s): 488 - 496
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (864 KB)  

    The phenomenon of control is an essential component of the everyday natural, social, and artificial environment. Control-related concepts have become a central component of many core topics in modern technology education. Knowledge about students abilities to understand (analysis) and design (synthesis) controlled systems, however, is still poor. Evidence already collected shows that students have serious difficulties in transcending the phenomenal or behavioral understanding of a system's functioning toward more formal definitions of the control process. In this paper, a framework to start dealing with these and related issues is proposed. First, the nature of controlled systems is discussed. Then, a conceptual framework encompassing a variety of perspectives on and approaches to control is presented. The framework consists of two main components: the process component; and the representational component. The first relates to the stages in the process of defining and implementing control. The second is the repertoire of constructs used for defining and implementing control. Two main paradigms are suggested as the conveyors of very different cognitive approaches to control: programming; and design paradigms. Finally, the educational implications of the proposed framework at both the cognitive and the instructional levels are discussed View full abstract»

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  • A coupled pendula system as an analogy to coupled transmission lines

    Publication Year: 1996 , Page(s): 548 - 557
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (900 KB)  

    The aim of this paper is to present a practical and easy to analyze coupled pendula system in order to demonstrate, by analogy, the behavior of coupled transmission lines and related devices. The importance of the coupled mode theory is first explained and its derivation is worked out through the use of the spring-coupled pendula, followed by a statement of the theory and its restrictions. The theory is then used for coupled transmission lines in general and a comparison is made between the coupled pendula and coupled transmission lines in order to extract analogous quantities and to recognize the limitations of such an analogy. The coupled pendula are then used to demonstrate the behavior of a forward coupler, tunable filter, optical switch, and parametric amplifier View full abstract»

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  • CASPER: a hypermedia departmental information system

    Publication Year: 1996 , Page(s): 471 - 477
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1388 KB)  

    In this paper, the authors discuss the design and development of computer assisted studies planning and educational resources (CASPER). CASPER is a hypermedia information system that allows students to find up-to-date information on courses, instructors, announcements, transfer credit, and frequently asked questions. One of the most important features of CASPER is its capability to assist students in planning their course selections for future terms. Because CASPER is an online system, additional human counselors are free to deal personally with students on less routine matters View full abstract»

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  • The II parallel programming system

    Publication Year: 1996 , Page(s): 457 - 464
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (820 KB)  

    A parallel random access machine (PRAM)-oriented programming language called II and its implementation on transputer networks are presented. The approach taken is a compromise between efficiency and simplicity. The II language has been conceived as a tool for the study, design, analysis, verification, and teaching of parallel algorithms. One of the main features of this Pascal-like language is the ability to mix parallelism and recursion allowing a simple and elegant formulation of a large number of parallel algorithms. A method for the complexity analysis of II programs, called PRSW, is introduced. The current version of the II compiler guarantees the conservation of the PRSW complexity of the algorithms translated. Furthermore, the computational results show a good behavior of the system for PRAM efficient algorithms View full abstract»

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  • An improved PSPICE model for simulation and analysis of thyristor commutation circuits in DC choppers

    Publication Year: 1996 , Page(s): 540 - 547
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (420 KB)  

    An accurate model of the thyristor in DC chopper commutation circuits is described using the available elements in the PSpice program library. The improved model, which takes into account the reverse recovery time during turn off, is used to simulate voltage and current commutated DC choppers. Simulation results, which include a study of commutation failure, agree with theoretical and experimental results. The model developed is useful for computer aided analysis and design of DC thyristor choppers including the commutation circuits View full abstract»

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Aims & Scope

Educational research, methods, materials, programs, and technology in electrical engineering, computer engineering, and fields within the scope of interest of IEEE.

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Editor-in-Chief
Jeffrey E. Froyd
Texas A&M University