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Digital Human Modeling for design and Engineering Conference and Exhibition

作者： Feng, Xuemei Yang, Jingzhou Abdel-Malek, Karim Wuhan University of Technology China Program Center for Computer-Aided Design Univesity of Iowa Iowa City IA 52242 United States

This paper presents a novel approach to determining the joint motion coupling relationship for the human shoulder complex. The human shoulder complex is the most sophisticated part in terms of degrees of freedom and motion. In the literature, different human shoulder biomechanical models have been developed for various purposes. Also, researchers have realized that there are constant movement relationships among the shoulder bones: the clavicle, scapula, and humerus. This is due to muscles and tendons that are involved in skeletal motions. These relationships, which are also called shoulder rhythm, entail joint motion coupling and joint limit coupling. However, the scope of this work is to determine the joint motion coupling relationship. This relationship is available in the literature, but it is an Euler-angle-based relationship. In the virtual human modeling environment, we cannot directly use this Euler-angle-based relationship. A novel approach is proposed to transfer Euler-angle-based coupling equations into a relationship based on the Denavit-Hartenberg (DH) method. A realistic shoulder complex model is built within Virtools. Euler angles are obtained for static positions with intervals of 15 degrees, and the elevation angle of the arm varied between 0 and 120 degrees. For a specific posture, we input the Euler angles to the shoulder complex model for each bone;then a set of DH joint angles can be determined. The new joint motion coupling relationship is obtained by polynomial, trigonometric and Fourier functions fitting of the DH joint angles using Mathematica. This DH-based joint motion coupling relationship can be used for posture and motion prediction. © 2008 SAE International.

关键词： Bone

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The design of an electronic self-regulation skill notebook for the development of meta-cognitive strategies and self-assessment in digital game-based learning environments

The design of an electronic self-regulation skill notebook f...

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2008 Spring Simulation Multiconference, SpringSim'08

作者： Adcock, Amy B. Watson, Ginger S. Morrison, Gary R. Belfore, Lee A. Instructional Design and Technology Program Darden College of Education Old Dominion University Education 251-5 A Norfolk VA 23529 United States Electrical and Computer Engineering Old Dominion University Education 251-5A Norfolk VA 23529 United States

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Annual business and news:: Beginning the 31st year of the Journal of Guidance, Control, and Dynamics

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JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 2008年第1期31卷 1-1页

作者： Schmidt, George T. Aeronautics and Astronautics Massachusetts Institute of Technology (MIT) AIAA Institute of Electrical and Electronics Engineers Russian Federation Academy of Navigation and Motion Control Department of Mechanical and Aerospace Engineering and Engineering Mechanics University of Missouri-Rolla(UMR) Lockheed Electronics Company Center for Space Research University of Texas Austin United States Wright Laboratory Eglin Air Force Base UMR AIAA Guidance Navigation and Control Technical Committee American Automatic Control Council Lockheed Martin Aeronautics Company Palmdale CA United States C4ISR and Unmanned Air Vehicle (UAV) Programs for Air Vehicle Sciences and Systems Accreditation Board Engineering and Technology Inc./Aeronautical National Technical Committee on Guidance Navigation and Control Department of Mechanical and Aerospace Engineering University at Buffalo State University of New York (SUNY) AIAA Technical Committee on GN and C Air Vehicles Directorate Air Force Research Laboratory (AFRL) Wright-Patterson Air Force Base Space Access and Hypersonic Vehicle Guidance and Control Group Control Science Center of Excellence AFRL AIAA Technical Committee on Guidance Navigation and Control Department of Mechanical and Aeronautical Engineering University of California (UC) Davis United States Boeing Company Modernized Flight Control System for the Apache Longbow AIAA Institute of Electrical and Electronics Engineers AHS Jet Propulsion Laboratory California Institute of Technology Boeing Company Flight Sciences and Advanced Design Group Guidance Navigation and Control (GN and C) Systems Engineer Distributed Space Systems NASA Goddard Space Flight Center (GSFC) AIAA GN and C Technical Committee Department of Aerospace Engineering and Engineering Mechanics University of Texas Austin United States Institute of Navigation American Astronautical Society AIAA Guidance Navigation (GN and C) and Control Technical Committee Department of Aerospace Engineering Iowa State University Iowa

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The effect of student tablet PC use on their attitudes towards and understanding of conceptual design

The effect of student tablet PC use on their attitudes towar...

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114th Annual ASEE Conference and Exposition, 2007

作者： Nguyen, Hien Wise, John Bilen, Sven Devon, Richard Pennsylvania State University United States Instructional Systems Penn State University United States Engineering Design Program Engineering Instruction Services Penn State United States Mid-AtIantic Department of Engineering Design Electrical Engineering and Aerospace Engineering Penn State United States Department of ED and G 100: Introduction to Engineering Design IEEE AIAA United States AGU ASEE URSI Sigma Xi United States Department of Engineering Design Engineering Design Program School for Engineering Design Technology and Professional Programs Pennsylvania State University United States Pennsylvania Space Grant Program Science Technology and Society Program Perm State United States

Engineers who work in innovative design spaces during conceptual design have very different CAD and graphics needs than those who work in more conventional design spaces such as those of detail design.1,2They need rapid, parsed communications, which support rather than constrain creativity. We have been examining digital ink technologies such as digital ink pens, SMART Boards, and Tablet PCs (TPCs). We have been exploring these since 2004 in the context of a program offering an introductory engineering design course to about one thousand students a year and upper division courses in innovative and global design. We will report on our initial examination of using TPCs in student design teams. This paper reports on a nonrandomized control-group pretest-posttest study conducted at Penn State university. Half of a first-year design class used TPCs and half used traditional paper and pencil for part of the semester;the groups then switched tools. It is hypothesized that TPC use by engineering students will have a positive effect on their understanding of and attitude towards conceptual design. An instrument designed to collect information on student awareness of the design process was developed and administered as a pre- and post-test. Results of this test will be reported, and suggestions for further research provided. © American Society for Engineering Education, 2007.

关键词： Personal computers

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Swept volumes: Fundation, perspectives, and applications

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International Journal of Shape Modeling 2006年第1期12卷 87-127页

作者： Abdel-Malek, Karim Yang, Jingzhou Blackmore, Denis Joy, Ken Program Center for Computer-Aided Design University of Low Iowa City IA 52242 United States Department of Mathematical Sciences New Jersey Institute of Technology Newark NJ 0710 United States Computer Science Department University of California Davis Davis CA 95616 United States

A survey of swept volume concepts and methods is presented. It consolidates and relates seemingly different terminology and methods. The methods are divided into five major categories: method with envelope theory, method with sweep differential equation (SDE)/sweep envelope differential equation (SEDE), method with Jacobian rank deficiency, Voxel-based method, and free-form solids' sweeping methods. Commentary is provided on three fronts, concerning the advantages and pitfalls of individual methods, the different classes of methods, and the field of swept volumes as a whole. The characteristics of the most significant methods are summarized. The applicability of this seemingly simple formulation to the fields of solid modeling, robotics, manufacturing automation, and visualization is demonstrated through results reported by the authors, each in their own field. © World Scientific Publishing Company.

关键词： Differential equations

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Conference highlights

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TechTrends 2001年第1期45卷 8-23页

作者： Herring, Mary Johari, Abbas Bradshaw, Amy C. Shoffner, Mary B. Dabbagh, Nada Lowell, Nathan University of Northern Iowa Cedar Falls Instructional Multimedia Design Department Cameron University USA Instructional Psychology and Technology Program University of Oklahoma USA University of Northern Colorado USA

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Implementation of a Problem-Based Approach in an Undergraduate Cognitive Neuroscience Course

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College Teaching 2001年第4期49卷 153-159页

作者： Schuh, Kathy L. Busey, Thomas A. Department of Instructional Design and Technology University of Iowa IA United States Department of Psychology at Indiana University Bloomington United States

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Self-initiated learning activities of experienced public school teachers: Methods, sources, and relevant organizational influences

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Teachers and Teaching: Theory and Practice 2001年第1期7卷 59-74页

作者： Lohman, Margaret C. Woolf, Nicholas H. Adult and Continuing Education Florida State University United States Instructional Design and Technology University of Iowa United States 306 Stone Building Tallahassee FL 32306-4451 United States

The self-initiated learning activities of experienced public school teachers are examined in this study. Twenty-two experienced teachers were interviewed to develop a greater understanding of the types of self-initiated learning activities in which they engage and the organizational characteristics that influence their participation in those activities. Analysis of the data showed that experienced teachers engaged in three types of self-initiated learning activities: knowledge exchanging, experimenting, and environmental scanning. Participation in these activities was influenced by the availability of resources, physical layout, and level of centralization in their schools. Implications of these findings for theory, practice, and future research in teacher learning and development are discussed. © 2001 Taylor & Francis Ltd.

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The Lack of Fidelity Between Cognitively Complex Constructs and Conventional Test Development Practice

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Educational Measurement: Issues and Practice 1999年第2期18卷 18-29页

作者： Nichols, Paul Sugrue, Brenda Assistant Professor Research and Evaluation University of Wisconsin-Madison Milwaukee WI 53201 PO Box 413 United States Instructional Design and Technology The University of Iowa Iowa City IA 52242 United States

Do current test development practices align well with the cognitively complex constructs being called for in the educational reform movement? What types of test development practices are needed to develop measures of ...

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Operational systems, logistics engineering and technology insertion

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 205-220页

作者： Grubb, MJ Skolnick, A Michael J. Grubb:has perfomzed naval engineering at the Crane Division Naval Surface Warfare Center (NSWC) for more than twenty-five years. He currently the program manager for the Sustainable Hardware and Affordable Readiness Practice Program (SHARP). is a Navy-wide logistics research and development prgram aimed at the successful transiton of proved technologies inot the fleet. SHARP focuses on reducing acquisition performance capability reliability maintainability and readiness of these systems. Mr. Grubb has served as a department director for the past eleven years. His most recent assignment was as director of the Tactical Computer Resources and Test Equipment Department. This organization provided acquisition and in-service engineering support of the Navy's tectical embedded computers priphirals displays and mass memory storage devices. The organization also provided a complete range of product engineering and metrology engineerig services for SSP NevSeaSysCom and the Trident Program. Prior to this appointment Mr. Grubb was deptuy director psysical security programs department and site responsible for program management and system integration of ashore integrated security systems. Mr. Grubb holds a B.S. degree in industrial engineering from Iowa State Universtiy an M.S. degree in industrial engineering from Purdue University and has copleted the course work (Dec.'96 for a master's degree in public and environment affairs at Indiana University-Purdue Univeristy Indianapolis. Dr. Alfred Skolnick operates System Science Consultants (SSC) specilizing in strategic planning technical program definiton technology assessment and engineering analyses on selected matters of national interest. He has taught physics mathematics and management sciences at University of Virginia and Marymount University and is currently adjunct professor of mathematics at Northern Virginia Community College. Form 1985 to 1989 he was president of the American Society of Noval Engineers. Dr. Skolnick served at Applied Physic

In an era of fiscal austerity, downsizing and unforgiving pressure upon human and economic capital, it is an Augean task to identify resources for fresh and creative work. The realities of the day and the practical demands of more immediate fleet needs can often dictate higher priorities. Yet, the Navy must avoid eating its seed corn. Exercising both technical insight and management foresight, the fleet, the R&D community, the Office of the Chief of Naval Operations (OpNav) and the product engineering expertise of the Naval Surface Warfare Center (NSWC) are joined and underway with integrated efforts to marry new, fully demonstrated technologies and operational urgencies. Defense funding today cannot sponsor all work that can be mission-justified over the long term because budgets are insufficient to support product maturation within the classical development cycle. However, by rigorous technical filtering and astute engineering of both marketplace capabilities and currently available components, it is possible in a few select cases to compress and, in effect, integrate advanced development (6.3), engineering development (6.4), weapon procurement (WPN), ship construction (SCN), operation and maintenance (O&M,N) budgetary categories when fleet criticalities and technology opportunities can happily meet. In short, 6.3 funds can be applied directly to ''ripe gateways'' so modern technology is inserted into existing troubled or aging systems, sidestepping the lengthy, traditional development cycle and accelerating practical payoffs to recurrent fleet problems. To produce such constructive results has required a remarkable convergence of sponsor prescience and engineering workforce excellence. The paper describes, extensively, the philosophy of approach, transition strategy, polling of fleet needs, technology assessment, and management team requirements. The process for culling and selecting specific candidate tasks for SHARP sponsorship (matching operational need with t

关键词： Naval vessels

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