The Experts below are selected from a list of 188796 Experts worldwide ranked by ideXlab platform
Wenpai Wang - One of the best experts on this subject based on the ideXlab platform.
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a fuzzy linguistic computing approach to supplier evaluation
Applied Mathematical Modelling, 2010Co-Authors: Wenpai WangAbstract:Abstract Harnessing the supply base is an important but complex task for enterprises. Supplier performance evaluation is increasingly seen as a strategic issue for companies to maintain and enhance the competitive edge. However, evaluating suppliers is complicated by the fact that various criteria must be considered in the decision-making process, and is inherently a multicriteria decision-making (MCDM) problem. It also concerns the evaluation by different experts of multiple attributes, both qualitative and quantitative. To perceive and to estimate effectively the capability of suppliers are real arduous tasks for executives. This paper takes advantage of the 2-tuple linguistic computing to coping with the heterogeneity and information loss problems while the evaluation processes of subjective integration. The proposed approach based on the group decision-making scenario assists executives in adroit manipulation of the heterogeneity during integration processes and averts the information loss effectively. Finally, we demonstrate the validity and feasibility by means of a high-Technology Company in Taiwan.
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evaluating new product development performance by fuzzy linguistic computing
Expert Systems With Applications, 2009Co-Authors: Wenpai WangAbstract:New product development (NPD) is indeed the cornerstone for companies to maintain and enhance the competitive edge. However, developing new products is a complex and risky decision-making process. It involves a search of the environment for opportunities, the generation of project options, and the evaluation by different experts of multiple attributes, both qualitative and quantitative. To perceive and to measure effectively the capability of NPD are real challenging tasks for business managers. This paper presents a 2-tuple fuzzy linguistic computing approach to deal with heterogeneous information and information loss problems during the processes of subjective evaluation integration. The proposed method which is based on the group decision-making scenario to assist business managers to measure the performance of NPD manipulates the heterogeneous integration processes and avoids the information loss effectively. Finally, its feasibility is demonstrated by the result of NPD performance evaluation for a high-Technology Company in Taiwan.
Jifeng Xuan - One of the best experts on this subject based on the ideXlab platform.
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what causes my test alarm automatic cause analysis for test alarms in system and integration testing
International Conference on Software Engineering, 2017Co-Authors: He Jiang, Zijiang Yang, Jifeng XuanAbstract:Driven by new software development processes and testing in clouds, system and integration testing nowadays tends to produce enormous number of alarms. Such test alarms lay an almost unbearable burden on software testing engineers who have to manually analyze the causes of these alarms. The causes are critical because they decide which stakeholders are responsible to fix the bugs detected during the testing. In this paper, we present a novel approach that aims to relieve the burden by automating the procedure. Our approach, called Cause Analysis Model, exploits information retrieval techniques to efficiently infer test alarm causes based on test logs. We have developed a prototype and evaluated our tool on two industrial datasets with more than 14,000 test alarms. Experiments on the two datasets show that our tool achieves an accuracy of 58.3% and 65.8%, respectively, which outperforms the baseline algorithms by up to 13.3%. Our algorithm is also extremely efficient, spending about 0.1s per cause analysis. Due to the attractive experimental results, our industrial partner, a leading information and communication Technology Company in the world, has deployed the tool and it achieves an average accuracy of 72% after two months of running, nearly three times more accurate than a previous strategy based on regular expressions.
Lanny G Thieme - One of the best experts on this subject based on the ideXlab platform.
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final results for the grc supporting Technology development project for the 110 watt stirling radioisotope generator srg110
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM-STAIF 2007: 11th Conf Thermophys.Applic.in Micrograv.; 24th Symp Space Nucl.Pwr.Propulsion; 5th , 2007Co-Authors: Jeffrey G Schreiber, Lanny G ThiemeAbstract:From 1999‐2006, the NASA Glenn Research Center (GRC) supported the development of a high‐efficiency, nominal 110‐We Stirling Radioisotope Generator (SRG110) for potential use on NASA missions, including deep space missions. Mars rovers, and lunar applications. Lockheed Martin (LM) was the system integrator for the SRG110, under contact to the Department of Energy (DOE). Infinia Corporation (formerly Stirling Technology Company) developed the Stirling converter. First as a contractor to DOE and then under subcontract to LM. The SRG110 development has been redirected, and recent program changes have been made to significantly increase the specific power of the generator. System development of an Advanced Stirling Radioisotope Generator (ASRG) has now begun, using a lightweight, advanced converter from Sunpower, Inc. This paper summarizes the results of the supporting Technology effort that GRC completed for the SRG110. GRC tasks included converter extended‐duration testing in air and thermal vacuum environm...
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supporting development for the stirling radioisotope generator and advanced stirling Technology development at nasa grc
SPACE TECHNOLOGY AND APPLICATIONS INT.FORUM-STAIF 2005: Conf.Thermophys in#N#Micrograv;Conf Comm Civil Next Gen.Space Transp; 22nd Symp Space Nucl.Pow, 2005Co-Authors: Lanny G Thieme, Jeffrey G SchreiberAbstract:A high‐efficiency, 110‐We (watts electric) Stirling Radioisotope Generator (SRG110) for possible use on future NASA Space Science missions is being developed by the Department of Energy, Lockheed Martin, Stirling Technology Company (STC), and NASA Glenn Research Center (GRC). Potential mission use includes providing spacecraft onboard electric power for deep space missions and power for unmanned Mars rovers. GRC is conducting an in‐house supporting Technology project to assist in SRG110 development. One‐, three‐, and six‐month heater head structural benchmark tests have been completed in support of a heater head life assessment. Testing is underway to evaluate the key epoxy bond of the permanent magnets to the linear alternator stator lamination stack. GRC has completed over 10,000 hours of extended duration testing of the Stirling convertors for the SRG110, and a three‐year test of two Stirling convertors in a thermal vacuum environment will be starting shortly. GRC is also developing advanced Technology...
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nasa grc Technology development project for a stirling radioisotope power system
Intersociety Energy Conversion Engineering Conference, 2000Co-Authors: Lanny G Thieme, Jeffrey G SchreiberAbstract:NASA Glenn Research Center (GRC), the Department of Energy (DOE), and Stirling Technology Company (STC) are developing a Stirling convertor for an advanced radioisotope power system to provide spacecraft on-board electric power for NASA deep space missions. NASA GRC is conducting an in-house project to provide convertor, component, and materials testing and evaluation in support of the overall power system development. A first characterization of the DOE/STC 55-We Stirling Technology Demonstration Convertor (TDC) under the expected launch random vibration environment was completed in the NASA GRC Structural Dynamics Laboratory. Two TDCs also completed an initial EMI characterization at NASA GRC while being tested in a synchronized, opposed configuration. Materials testing is underway to support a life assessment of the heater head, and magnet characterization and aging tests have been initiated. Test facilities are now being established for an independent convertor performance verification and Technology development. A preliminary FMEA, initial FEA for the linear alternator, ionizing radiation survivability assessment, and radiator parametric study have also been completed. This paper discusses the status, plans, and results to date for these efforts.
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Technology development for a stirling radioisotope power system
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM - 2000, 2000Co-Authors: Lanny G Thieme, Songgang Qiu, Maurice A WhiteAbstract:NASA Glenn Research Center and the Department of Energy are developing a Stirling convertor for an advanced radioisotope power system to provide spacecraft on-board electric power for NASA deep space missions. NASA Glenn is addressing key Technology issues through the use of two NASA Phase II SBIRs with Stirling Technology Company (STC) of Kennewick, WA. Under the first SBIR, STC demonstrated a synchronous connection of two thermodynamically independent free-piston Stirling convertors and a 40 to 50 fold reduction in vibrations compared to an unbalanced convertor. The second SBIR is for the development of an Adaptive Vibration Reduction System (AVRS) that will essentially eliminate vibrations over the mission lifetime, even in the unlikely event of a failed convertor. This paper presents the status and results for these two SBIR projects and also discusses a new NASA Glenn in-house project to provide supporting Technology for the overall Stirling radioisotope power system development. Tasks for this new effort include convertor performance verification, controls development, heater head structural life assessment, magnet characterization and thermal aging tests, FEA analysis for a lightweight alternator concept, and demonstration of convertor operation under launch and orbit transfer load conditions.
Jeffrey G Schreiber - One of the best experts on this subject based on the ideXlab platform.
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final results for the grc supporting Technology development project for the 110 watt stirling radioisotope generator srg110
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM-STAIF 2007: 11th Conf Thermophys.Applic.in Micrograv.; 24th Symp Space Nucl.Pwr.Propulsion; 5th , 2007Co-Authors: Jeffrey G Schreiber, Lanny G ThiemeAbstract:From 1999‐2006, the NASA Glenn Research Center (GRC) supported the development of a high‐efficiency, nominal 110‐We Stirling Radioisotope Generator (SRG110) for potential use on NASA missions, including deep space missions. Mars rovers, and lunar applications. Lockheed Martin (LM) was the system integrator for the SRG110, under contact to the Department of Energy (DOE). Infinia Corporation (formerly Stirling Technology Company) developed the Stirling converter. First as a contractor to DOE and then under subcontract to LM. The SRG110 development has been redirected, and recent program changes have been made to significantly increase the specific power of the generator. System development of an Advanced Stirling Radioisotope Generator (ASRG) has now begun, using a lightweight, advanced converter from Sunpower, Inc. This paper summarizes the results of the supporting Technology effort that GRC completed for the SRG110. GRC tasks included converter extended‐duration testing in air and thermal vacuum environm...
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supporting development for the stirling radioisotope generator and advanced stirling Technology development at nasa grc
SPACE TECHNOLOGY AND APPLICATIONS INT.FORUM-STAIF 2005: Conf.Thermophys in#N#Micrograv;Conf Comm Civil Next Gen.Space Transp; 22nd Symp Space Nucl.Pow, 2005Co-Authors: Lanny G Thieme, Jeffrey G SchreiberAbstract:A high‐efficiency, 110‐We (watts electric) Stirling Radioisotope Generator (SRG110) for possible use on future NASA Space Science missions is being developed by the Department of Energy, Lockheed Martin, Stirling Technology Company (STC), and NASA Glenn Research Center (GRC). Potential mission use includes providing spacecraft onboard electric power for deep space missions and power for unmanned Mars rovers. GRC is conducting an in‐house supporting Technology project to assist in SRG110 development. One‐, three‐, and six‐month heater head structural benchmark tests have been completed in support of a heater head life assessment. Testing is underway to evaluate the key epoxy bond of the permanent magnets to the linear alternator stator lamination stack. GRC has completed over 10,000 hours of extended duration testing of the Stirling convertors for the SRG110, and a three‐year test of two Stirling convertors in a thermal vacuum environment will be starting shortly. GRC is also developing advanced Technology...
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nasa grc Technology development project for a stirling radioisotope power system
Intersociety Energy Conversion Engineering Conference, 2000Co-Authors: Lanny G Thieme, Jeffrey G SchreiberAbstract:NASA Glenn Research Center (GRC), the Department of Energy (DOE), and Stirling Technology Company (STC) are developing a Stirling convertor for an advanced radioisotope power system to provide spacecraft on-board electric power for NASA deep space missions. NASA GRC is conducting an in-house project to provide convertor, component, and materials testing and evaluation in support of the overall power system development. A first characterization of the DOE/STC 55-We Stirling Technology Demonstration Convertor (TDC) under the expected launch random vibration environment was completed in the NASA GRC Structural Dynamics Laboratory. Two TDCs also completed an initial EMI characterization at NASA GRC while being tested in a synchronized, opposed configuration. Materials testing is underway to support a life assessment of the heater head, and magnet characterization and aging tests have been initiated. Test facilities are now being established for an independent convertor performance verification and Technology development. A preliminary FMEA, initial FEA for the linear alternator, ionizing radiation survivability assessment, and radiator parametric study have also been completed. This paper discusses the status, plans, and results to date for these efforts.
Hannibal Travis - One of the best experts on this subject based on the ideXlab platform.
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the future according to google Technology policy from the standpoint of america s fastest growing Technology Company
Yale Journal of Law and Technology, 2009Co-Authors: Hannibal TravisAbstract:As the fastest-growing Technology Company in the United States, (1) Google has been at the center of some of the most contentious Technology policy disputes of recent years. In the federal courts, these disputes focus on the fair or noncommercial use of copyrighted work and trademarks on the Internet. In Congress, Google is leading the charge in favor of laws protecting innovative Internet companies from discriminatory or exorbitant charges by broadband and wireless infrastructure providers. It has also been a vocal opponent of excessive governmental control over Internet content. Copyright lawsuits arising out of search engines and user-generated content sites such as Google Video and YouTube have the potential to change the rules governing communication over the Internet. Similarly, trademark litigation alleging that comparative and Internet keyword-based advertising are infringing may limit the ability of Technology companies and their customers to compete online. Many Technology companies also believe that injunctive relief obtained by the owners of patents in comparatively minor components of complex software-enabled products may chill innovation and divert capital away from applied research. But it seems that the power of infrastructure providers to favor allied content providers has truly spooked Technology leaders like Google. Meanwhile, Google, other Technology and Internet companies, and members of Congress have demanded action to limit foreign governments' ability to block U.S.-based Web content from being accessed by persons present in their territory. This essay contends that two of the most likely candidates for important Technology policy initiatives in the administration of President Barack Obama are two of Google's public policy priorities, namely net neutrality and global online freedom. The adoption of these initiatives as public policy priorities would be a positive development for Technology users and producers around the world. Their success would mean that two of the foremost threats to online freedom have been deferred, at least for a while. Nonetheless, overbroad or questionable copyright, trademark, and patent rights will continue to bedevil Technology firms, as they have for much of the past century. I. INTELLECTUAL INNOVATION A. Calibrating Copyright The struggle by authors and innovators against claims to absolute ownership rights in copyrighted work goes back centuries. (2) In recent years, demands by copyright holders to control the secondary markets for indexing, utilizing excerpts of, and improving upon their works have generated increasing numbers of cases alleging copyright infringement. (3) These demands have set into motion a cycle of overprotection of intellectual property, suppression of output and of new methods of distribution, overcompensation of a minority of heavily-promoted celebrities, the overshadowing of most other creative work, and a consumer revolt against the system by means of small-scale infringements. (4) Starting in the early- to mid-1990s, U.S. courts began to threaten the development of innovative Internet and Web-enabled services by holding Technology companies liable for contributing to their users' copyright infringement, and by interpreting defenses to copyright such as the fair use doctrine in a narrow manner. (5) Before Sony Corp. of America v. Universal City Studios, Inc, (6) it was sometimes said that one could commit contributory copyright infringement simply by "inducing" or encouraging another's infringement. (7) After Sony, the contributory infringement standard was more clearly stated as making a material contribution to infringement one knows is going on. Sony also said that knowledge of infringement cannot be presumed in such a case, or for purposes of vicarious infringement, if the product or service that contributed to the infringement is capable of substantial noninfringing uses. …
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the future according to google Technology policy from the standpoint of america s fastest growing Technology Company
Social Science Research Network, 2009Co-Authors: Hannibal TravisAbstract:The Internet in general, and Google in particular, are threatened by laws and judicial decisions that impose civil liability for searching or indexing information. Increasingly, copyright and trademark holders are demanding that Google not index certain copyrighted or trademark-related words, images, text, or video. Google often resists these calls by referencing the fair use doctrine in copyright law, and the noncommercial use doctrine in trademark law. The fair and noncommercial use defenses, by privileging efforts to improve access to information, frequently provide effective means of dealing with the legal risks of search engines. In some cases, however, Google has elected to settle litigation, principally in the copyright area, challenging new search engines it has created for books, videos, and news articles. By buying out litigants, it improves the Internet. Patent law has proven to be more of an obstacle to Google, which is facing several lawsuits alleging that its core functionalities (like Web search and YouTube) violate U.S. patents. Although Google and other Technology companies have supported patent reform in the courts and in Congress, these reforms have failed to materialize in the form they desired. Stiff resistance from companies and law firms benefiting from the current patent system makes reform seem unlikely. At the same time, aspirations by governments and broadband infrastructure providers to exercise more control over the content of Internet communications may frustrate Google's objective of organizing the world's information. For this reason, Net neutrality and global online freedom may be the two of the most challenging issues of Technology policy to confront the next administration. It remains to be seen whether in the absence of new legislation, the Federal Communications Commission or other agencies of the federal government have the tools they need to deal with these threats to Internet search and hosting services. Should foreign or U.S. gatekeeper censorship or degradation of Internet service persist, legislative reform may prove to be necessary to protect freedom of expression.This Essay was selected by the Yale Journal of Law & Technology as one of the winners of its Technology 2008 Essay Contest. The theme of the contest was "the issues that the new presidential administration would likely face," and "potential solutions for those challenges." The author presented a summary of his findings at the Computers, Freedom, and Privacy 2008 Conference hosted by Yale Law School in May 2008.
