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A Research Agenda for systems of systems Architecting

INCOSE International Symposium 2007年第1期17卷 1892-1908页

作者： Axelband, Elliot Baehren, Thomas Dorenbos, Dave Madni, Azad Robitaille, Paul Valerdi, Ricardo Boehm, Barry Jackson, Scott Nadler, Gerald Settles, Stan System Architecting and Engineering Program at USC United States Corporate Sector Research and Advanced Engineering Systems for Robert Bosch GmbH Germany

This paper documents the activity of a workshop on defining a research agenda for systems of systems (SoS) Architecting, which was held at USC in October 2006. After two days of invited talks on critical success factors for SoS engineering, the authors of this paper convened for one day to brainstorm topics for the purpose of shaping the near-term research agenda of the newly convened USC Center for systems & Software engineering. The output from the workshop is a list of ten high-impact items with corresponding research challenges in the context of SoS Architecting. Each item includes a description of the research challenges, its link to contemporary academic or industrial problems, and reasons for advocacy of that area. The items were assessed in terms of value and difficulty to determine a prioritization both for the CSSE's future research agenda and for others in the field. © 2007 The Authors.

关键词： system of systems

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Genotoxicity assessment of wood-preserving waste-contaminated soil undergoing bioremediation

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Bioremediation Journal 2007年第4期11卷 171-182页

作者： Gillespie, A.M. Wang, S. McDonald, T. Garcia, S.G. Cosgriff, D. He, L.-Y. Huebner, H. Donnelly, K.C. Toxicology Program College Station Texas AandM University TX United States Department of Environmental and Occupational Health Texas AandM University System Health Science Center Texas AandM University TX United States Arrowhead Engineering Libby MN United States Department of Veterinary Integrative Biosciences College Station Texas AandM University TX United States

Bioremediation represents one of the most cost-effective technologies for treatment of petroleum hydrocarbons in contaminated surface soils. A major concern for regulatory agencies when evaluating bioremediation is how to determine acceptable levels for residual organics in soil. Although guidelines have been developed for some organics in soil, limited information is available to define acceptable levels of the metabolites of biological degradation. The products of oxidative degradation are likely to be more water soluble and may also be more toxic. The purpose of the current study was to monitor changes in compound concentration and genotoxicity in soils undergoing bioremediation. The site selected for this study was a former wood-preserving site in the northwestern United States. Soil samples were collected over a 4-year period from two 6075-m2 land treatment units. Conditions for biodegradation were enhanced by the addition of water and nutrients, as well as by frequent tilling to add oxygen. Due to the location of the facility, the temperature was conducive to a more rapid rate of biodegradation for approximately 6 months per year. Soil samples were collected using a grid system and solvent extracted. Polycyclic aromatic hydrocarbons were quantified in soil extracts using gas chromatography-mass spectrometry (GC/MS), and genotoxicity measured using the Salmonella/microsome assay. After 2 years of treatment, concentrations of total and carcinogenic polycyclic aromatic hydrocarbons (PAHs) were reduced to approximately 10% the concentration in the untreated soil. However, the mean weighted activity of the untreated soil was 293 net revertants per g soil, whereas the extracts of soil collected after 2 years induced a mean weighted activity of 325 net revertants per g soil. Thus, although biodegradation clearly reduced the concentration of total and carcinogenic PAHs in the surface soils, the results from the genotoxicity bioassay indicate that there was a lag in th

关键词： Soils

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10.7 Gbit/s transmission over 220 m polymer optical fiber using maximum likelihood sequence estimation

10.7 Gbit/s transmission over 220 m polymer optical fiber us...

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Optical Fiber Communication Conference, OFC 2007

作者： Lee, S.C.J. Breyer, F. Randel, S. Spinnler, B. Lobato Polo, I.L. Van Den Borne, D. Zeng, J. De Man, E. Van Den Boom, H.P.A. Koonen, A.M.J. COBRA Research Institute Fac. of Electrical Engineering Eindhoven Univ. of Tech Eindhoven Netherlands Institute of Communications Engineering Munich Univ. of Tech Munich Germany Siemens AG Corporate Technology Information and Communications Munich Germany Siemens AG Siemens AG Program and System Engineering Munich Germany Siemens AG Communications Fixed Networks Munich Germany

10.7 Gbit/s NRZ-signals are transmitted for the first time over 220 m of multimode 120 μm core-diameter perfluorinated graded-index polymer optical fiber using an MLSE equalizer. © 2007 Optical Society of America.

ISBN: (纸本)1557528306

关键词： Plastic optical fibers

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Cost-effective 10.7-Gbit/s long-haul transmission using fiber Bragg gratings for in-line dispersion compensation

Cost-effective 10.7-Gbit/s long-haul transmission using fibe...

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Optical Fiber Communication Conference, OFC 2007

作者： Van Den Borne, D. Veljanovski, V. De Man, E. Gaubatz, U. Zuccaro, C. Paquet, C. Painchaud, Y. Jansen, S.L. Gottwald, E. Khoe, G.D. De Waardt, H. COBRA institute Eindhoven University of Technology Netherlands Siemens AG Program and System Engineering Munich Germany Siemens AG Communications Fixed networks Munich Germany TeraXion Inc. Quebec City QC Canada KDDI R and D Laboratories Saitama Japan

We show the feasibility of more cost-effective long-haul transmission using Fiber Bragg Gratings (FBG) for in-line dispersion compensation. 32x10.7-Gbit/s NRZ modulated channels are transmitted over 40x95 km of SSMF u... 详细信息

ISBN: (纸本)1557528306

关键词： Dispersion compensation

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Two-dimensional simulation of flow hydraulics and bed-load transport in a mountain gravel-bed stream: The upper Spanish Creek

Two-dimensional simulation of flow hydraulics and bed-load t...

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作者： Duan, Jennifer G. Chen, Dong Jen, Weller Benoit, Terry Department of Civil Engineering and Engineering Mechanics University of Arizona Tucson AZ 85721 United States Desert Research Institute Nevada Higher Education System Las Vegas NV 89119 United States Hydrologic Science Program University of Nevada Reno NV 89557 United States Geomorphologist Plumas Corporation Quincy CA 95971 United States

ISBN: (纸本)9780784409275

Sediment transport in a gravel-bed mountain stream, the Upper Spanish Creek, California, was simulated with a depth-averaged, two-dimensional hydrodynamic and sediment transport model. The hydrodynamic model is based on the solution of depth-averaged flow continuity and momentum equations with dispersion terms to account for the effect of secondary flow. The sediment transport model treats bed load and bed material as mixtures of multiple grain-size sediment. Changes in bed elevation are calculated by solving the sediment mass conservation equation. The model was applied to predict bed-load transport in the Upper Spanish Creek to identify areas of high-erosive potential that require bank protections. Results of this verification process demonstrated the applicability of the two-dimensional hydrodynamic and sediment transport model to assist river restoration designs for gravel-bed streams. © 2007 ASCE.

关键词： Sediment transport

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10.7 Gbit/s transmission over 220 m polymer optical fiber using maximum likelihood sequence estimation

10.7 Gbit/s transmission over 220 m polymer optical fiber us...

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OFC/NFOEC 2007 - Optical Fiber Communication and the National Fiber Optic Engineers Conference 2007

作者： Lee, S.C.J. Breyer, F. Randel, S. Spinnler, B. Polo, I. L. Lobato Van Den Borne, D. Zeng, J. De Man, E. Van Den Boom, H.P.A. Koonen, A.M.J. COBRA Research Institute Fac. of Electrical Engineering Eindhoven Univ. of Tech. Eindhoven Netherlands Institute of Communications Engineering Munich Univ. of Tech. Munich Germany Siemens AG Corporate Technology Information and Communications Munich Germany Siemens AG Siemens AG Program and System Engineering Munich Germany Siemens AG Communications Fixed Networks Munich Germany

ISBN: (纸本)1557528314

关键词： Light transmission

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Stethoscopes: What are we hearing?

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Biomedical Instrumentation and Technology 2007年第4期41卷 318-323页

作者： Callahan, Dale Waugh, Jonathan Mathew, George Allen Granger, Wesley M. Department of Electrical and Computer Engineering University of Alabama Birmingham Birmingham AL United States Respiratory Therapy Program School of Health Related Professions University of Alabama Birmingham Birmingham AL United States Lung Health Center and Minority Health and Research Center University of Alabama Birmingham Birmingham AL United States Information System Department General Motors Acceptance Corporation Detroit MI United States

This paper develops an objective methodology to test the audio quality of stethoscopes, classifies stethoscopes into five functional categories, and compares the audio performance of each of the five categories. These categories, based on the manufacturers recommended use, are basic assessment, cardiology, disposable, high-end cardiology, and physical assessment. The classification into categories is based on the intended performance of the stethoscopes as provided by the manufacturers. After developing the procedures and running more than 500 tests, the stethoscope with the least amount of loss over the spectrum was chosen from each of the five categories;the five were then compared to one another. Thirty-nine stethoscopes from 11 manufacturers were used in this study. The objective test methodology allows for side-by-side comparison of stethoscopes from various manufacturers that is independent of the manufacturers published test results.

关键词： Biomedical equipment

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An assessment and analysis tool for statistical process control of software processes 7

An assessment and analysis tool for statistical process cont...

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7th International SPICE Conference on Process Assessment and Improvement, SPICE 2007

作者： Kirbaş, Serkan Tarhan, Ayça Demirörs, Onur Siemens Program and System Engineering Department ODTU Teknokent Silikon Blk No:21 Ankara06531 Turkey Bilgi Group Software Research Education and Consultancy Ltd ODTU Teknokent Gumus Blk No:3 Ankara06531 Turkey Informatics Institute Middle East Technical Universit AnkaraMM Kat:4 06531 Turkey

ISBN: (纸本)9788976416094

In software engineering domain, SPC is currently utilized only by organizations which have high maturity levels according to the process improvement models like ISO/IEC 15504 and CMMI. In this paper, we present a software tool that we developed to ease and enhance application of SPC especially for emergent organizations. Our tool has facilities to assess the suitability of software processes and metrics for SPC as well as to analyze a software process with respect to its qualifying metrics using SPC techniques like control charts, histograms, bar charts, and pareto charts. In this paper we explain the tool by means of a bug-fixing process of a system and software development organization.

关键词： Statistical process control

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Mentornet's Wisconsin and Hawaii statewide initiatives

Mentornet's Wisconsin and Hawaii statewide initiatives

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114th Annual ASEE Conference and Exposition, 2007

作者： Wellenstein, Mary Jo Courter, Sandra Sandrin, Susannah Showers, Karen Wilkins, Leslie Muller, Carol Chou-Green, Jennifer Bloor, Ann Mayberry, Laurie Yap, Isla Milwaukee School of Engineering United States University of Wisconsin Madison United States University of Wisconsin Oshkosh United States Wisconsin Technical College System United States Maui Economic Development Board United States MentorNet United States Department of Counseling Services MSOE United States Engineering Learning Center United States Department of Engineering Professional Development University of Wisconsin System Women Science Program United States UW-Oshkosh United States WTCS Maui Economic Development Board HI United States Research Administration MSOE United States Provost University of Wisconsin Madison United States Women in Technology Project Maui Economic Development Board United States

The state of Wisconsin and state of Hawaii are the only states in the nation to have offered MentorNet membership to all public universities and technical colleges. This innovative partnership highlights a new model to launch MentorNet on college campuses. MentorNet, the E-Mentoring Network for Diversity in engineering and Science and an award-winning nonprofit e-mentoring organization, offers a proven effective means to connect students (protégés) in science, technology, engineering, and math (STEM) majors with professionals (mentors) in industry, government and higher education. Since mentoring is recognized as an important engagement strategy to encourage women and girls to pursue STEM education and careers, other states can benefit from the story of the Wisconsin and Hawaii collaboration. Hawaii's Maui Economic Development Board and Wisconsin's Milwaukee School of engineering have partnered under a Women in Technology grant from the U.S. Department of Agriculture Cooperative State Research, Education, and Extension Service. This grant is to encourage women and girls in rural areas to pursue STEM education and careers. Because students at the Hawaii and Wisconsin partner campuses were enthusiastic about their MentorNet experience, the Women in Technology grant funded a two-year contract to waive membership fees for MentorNet for all four-year and two-year University of Wisconsin system and Wisconsin Technical College system campuses;30 institutions could potentially participate. One of the aims of this program was to encourage more technical/community colleges to partner with MentorNet, broadening the range of mentoring opportunities for the diverse population of students who attend such schools. To promote MentorNet participation in the Wisconsin systems, a collaborative team from Hawaii, Milwaukee School of engineering, MentorNet, the University of Wisconsin system, and the Wisconsin Technical College system held a one-day orientation training in August 2005. A

关键词： engineering education

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Numerical analysis of the unsteady cavitating flow in a 2D-cascade and a 3D-inducer

Numerical analysis of the unsteady cavitating flow in a 2D-c...

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43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference

作者： Ugajin, Hiroki Kawai, Masafumi Okita, Kohei Ohta, Takashi Kajishima, Takeo Nakano, Masataka Tomaru, Hiroshi IHI Corporation Tokyo 190-1297 Japan IHI Corporation Yokohama 235-8501 Japan RIKEN Wako Saitama 113-8656 Japan Osaka University Osaka 565-0871 Japan Space Technology Group Research and Engineering Division Aero-Engine and Space Operations 229 Tonogaya Mizuho-machi Nishitama-gun AIAA Fluid Group Research Laboratory Functionality Simulation and Information Team VCAD System Research Program Center for Intellectual Property Strategies Department of Mechanical Engineering Space Technology Group Research and Engineering Division Aero-Engine and Space Operations

ISBN: (纸本)1563479036

The unsteady cavitating flow in a turbopump inducer has been analyzed using CFD simulation results. An accurate three-dimensional detached eddy simulation (DES) code which took into account the cavitating phenomena was used. The three-dimensional code is based on the numerical method for compressible flow using low Mach number flow approximation. The cavitation is modeled by the source/sink of vapor phase in the liquid flow. The code has been applied for cavitating flows in both a 2D cascade and a 3D inducer. The computational results showed similar unsteady behaviors to experimental measurements in terms of the direction in cavity propagations and tendency in cavity developments. Mechanism for the unsteady cavitating flow such as rotating cavitation is investigated by analyzing the numerical results. One model is proposed to describe the reason why the cavity appears to propagate in the forward direction.

关键词： Unsteady flow

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