共查询到20条相似文献，搜索用时 62 毫秒
1.
Edward J. Baranoski 《Journal of The Franklin Institute》2008,345(6):556-569
Through-wall imaging approaches are highly desirable for a range of applications including police, fire and rescue, first responder, and military applications. The ultimate desire of such systems is to provide detailed information in areas that cannot be seen through conventional measures. Borrowing from successes in geological and medical imaging environments, researchers have attempted to apply radio frequency (RF) and other sensing modes to penetrate wall materials and optimally estimate the content and structure of rooms and buildings. There are many propagation differences that provide unique challenges that must be addressed to make through-wall penetration sensors operationally viable. This paper outlines the historical context of early research and provides new directions for future research in the exciting interplay between electromagnetic propagation, signal processing, and knowledge-based reasoning algorithms. 相似文献
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《International Journal of Information Management》2017,37(2):92-97
Financial technology, or FinTech, involves the design and delivery of financial products and services through technology. It impacts financial institutions, regulators, customers, and merchants across a wide range of industries. Pervasive digital technologies are challenging the fundamentals of the highly regulated financial sector, leading to the emergence of non-traditional payment systems, peer-to-peer money exchanges and increased turbulence in currency markets. This case study explores the development of a FinTech company in China that offers microloans to college students. Five lessons learned are presented for organizations to better manage the challenges and to leverage the opportunities amidst the disruption of financial sector. Our findings also shed light on how digital technology 1) offers the strategic capability for a firm to occupy a market niche in financial sector, 2) enables the generation of alternative credit scores based on non-traditional data, and 3) improves the financial inclusion of previously excluded market segments. 相似文献
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Research on social protest movements raises many complicated methodological issues. This article systematically explains the methodological quandaries the authors confronted when studying demonstrations and online and offline activism by ethnic Turks in Germany, Belgium, and the Netherlands in support of the Gezi Park protesters in Turkey. It explains how participants were recruited and surveyed in this complex and extremely sensitive environment. It offers lessons learned that can be applied to other studies involving surveys of ethnic minorities engaged in social protest movements. More generally, they may also apply to surveys of any vulnerable population about sensitive issues. 相似文献
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《Information processing & management》1999,35(5):589-603
This paper examines the challenges involved in conducting an informal usability case study based on the introduction of a new information retrieval system to experienced users. We present a summary of activities performed during two iterations of usability testing and describe our analysis methodology. This methodology incorporates several grouping and prioritizing methods which provide one of the major contributions of the work. During the course of the case study, we learned some valuable lessons which were specific to the Text REtrieval Conference (TREC). The TREC-specific lessons learned led to recommendations for changes in the TREC topic development and assessment tasks. Results of the study include lessons learned about both the users and the testing techniques (Hoffman & Downey, 1997). 相似文献
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This paper addresses the potentials of ultra-wideband (UWB) through-wall imaging radars compared with conventional narrowband systems. The challenges that limit the utilization of high precision UWB systems are examined with the aim of mitigating them. These challenges include multi-path, pulse dispersion, and antenna effects on the pulse shape due to angles of transmission and arrival. The propagation of UWB signals through walls is a crucial factor in determining the success of UWB radar technology. UWB signals, when propagating through walls, not only suffer attenuation but also distortion due to dispersive properties of the walls. This paper examines time- and frequency-domain techniques for measuring the electromagnetic properties of construction materials in the UWB frequency range. The measured parameters provide valuable insights in appreciating the capabilities and limitations of the UWB technology. Special attention is paid to time gating as a mean to extract the direct-path signal from the multi-path components. Both single-pass and multi-pass models are discussed. Multi-pass models account for the multiple reflections within the wall while the single-pass model assumes the possibility of gating out a single transmission. The partition-dependent narrowband propagation model is modified to account for the ultra-wide bandwidth of the signal. The paper illustrates the application of the modified model in indoor environments. The modified model is helpful in estimating the link power budget. It is also useful in studying the performance of UWB systems for indoor communication and positioning applications. 相似文献
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分析了金融危机对北京软件外包带来的挑战和机遇,指出机遇大于挑战,在北京独有的地理区位和雄厚的人力资源等优势基础上,借鉴国内外经验教训,提出后金融危机下创新发展北京软件外包产业的相应战略对策,包括人才储备和科学评测、改善产业环境、国内外市场开拓、吸引跨国公司和支持本土企业、打造地区品牌和增强自主创新能力等。 相似文献
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Ram M. Narayanan 《Journal of The Franklin Institute》2008,345(6):659-678
This paper examines the results of our research on the use of ultrawideband noise waveforms for imaging objects behind walls. The advantages of using thermally generated noise as a probing signal are introduced. The technique of heterodyne correlation used to inject coherence in the random noise probing signal and to collapse the wideband reflected signal into a single frequency are presented. Central to successful imaging through building walls is the characterization of the wideband propagation properties of wall materials and these are discussed. The basic concepts of synthetic aperture radar image formation using noise waveforms and the unique problems associated with the random nature of the transmit waveform are analyzed. We also address issues related to locating, detection, and tracking humans behind walls, using new tools for human activity characterization, namely the Hilbert-Huang Transform approach. The results indicate that noise radar technology combined with modern signal processing approaches is indeed a viable technique for covert high-resolution imaging of obscured stationary and moving targets. 相似文献
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Philip A. E. Brey 《Ethics and Information Technology》2012,14(4):305-317
In this essay, a new approach to the ethics of emerging information technology will be presented, called anticipatory technology ethics (ATE). The ethics of emerging technology is the study of ethical issues at the R&D and introduction stage of technology development through anticipation of possible future devices, applications, and social consequences. In the essay, I will first locate emerging technology in the technology development cycle, after which I will consider ethical approaches to emerging technologies, as well as obstacles in developing such approaches. I will argue that any sound approach must centrally include futures studies of technology. I then present ATE and some applications of it to emerging information technologies. In ATE, ethical analysis is performed at three levels, the technology, artifact and application levels, and at each levels distinct types of ethical questions are asked. ATE analyses result in the identification and evaluation of a broad range of ethical issues that can be anticipated in relation to an emerging information technology. This ethical analysis can then be used for ethical recommendations for design or governance. 相似文献
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This article examines the knowledge component in cluster literature from its origins to the present. A chronological perspective is deployed in order to shed light on how the concept of clusters has evolved. Given the increasing interest in clusters as knowledge repositories, and the apparent conviction among policymakers of the manageability of clusters, lessons learned from knowledge management (KM) practices in organizations might well be applied to the many policy efforts aimed at governing clusters. We argue that introducing KM initiatives on a regional level should be accompanied by an understanding of the possible downfalls that are associated with KM failures. 相似文献
11.
Leonard N. Foner 《The Information Society》2013,29(3):153-163
An experimental, all-day Workshop on Freedom and Privacy by Design took place on 4 April 2000, as part of the 10th annual Conference on Computers, Freedom, and Privacy. It invited more than 30 well-known systems architects, implementors, and experts in privacy and usability to investigate, in depth, three different proposals for creating political artifacts: technology intended to bring about particular types of political change--in this case, the reinforcement of certain civil liberties. This article summarizes the rationale and structure of the workshop, the three proposals investigated, and what the workshop and audience members had to say about the issues. It concludes with some information on the workshop's impact to date and what lessons were learned by running such an experiment. 相似文献
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Leonard N. Foner 《The Information Society》2002,18(3):153-163
An experimental, all-day Workshop on Freedom and Privacy by Design took place on 4 April 2000, as part of the 10th annual Conference on Computers, Freedom, and Privacy. It invited more than 30 well-known systems architects, implementors, and experts in privacy and usability to investigate, in depth, three different proposals for creating political artifacts: technology intended to bring about particular types of political change--in this case, the reinforcement of certain civil liberties. This article summarizes the rationale and structure of the workshop, the three proposals investigated, and what the workshop and audience members had to say about the issues. It concludes with some information on the workshop's impact to date and what lessons were learned by running such an experiment. 相似文献
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随着CAPP技术的发展和对军工产品质量管理的要求,越来越多的军工企业引入CAPP系统。结合军工企业的需求和本公司实施情况,探讨军工企业实施CAPP信息化系统的经验和教训。 相似文献
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Ricardo Colomo-Palacios Ángel García-Crespo Pedro Soto-Acosta Marcos Ruano-Mayoral Diego Jiménez-López 《International Journal of Information Management》2010
It is evident that companies and research centres can find a myriad of instruments to fund their R&D (Research & Development) activities. Due to the dynamics of the information management in these circumstances there is a need for intermediary businesses intervention. Consequently, intermediary companies are thus involved in a complex process that needs to be managed and controlled. Within this scenario an Information Technology (IT) platform, named RDi-Advise, was developed by EgeoIT using semantic technologies to support R&D process decisions. This case analysis describes the development and implementation of the platform including the lessons learned during the activity period. 相似文献
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Peerasit Patanakul Reneé Rufo-McCarron 《The Journal of High Technology Management Research》2018,29(2):181-192
With a need to implement an agile software development methodology in government programs, this study was conducted to explore how organizations transitioned from a traditional waterfall software development method to agile methods. To accomplish this study, a case study research was utilized. A multimillion-dollar government-contracted program in the US was studied. The research findings reveal key challenges faced by organizations during the transition and the lessons learned that can be applied to future programs. Propositions for future research are also presented. 相似文献
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Biochemistry, a vital component of the medical science, is taught in medical schools to: a) explain the biochemical basis of diseases; b) understand the basis of laboratory investigations; c) interpret and apply results of the laboratory investigations in diagnosis and management of diseases. The curriculum of this medical school is a community oriented problem based approach with the basic concept being spiral progression of core knowledge. This also creates an opportunity for innovative promotion of teaching and learning. In this medical school, the undergraduate medical course is divided into three phases as Phase I, II and III. Biochemistry is not taught as a separate subject in Phase I but integrated with other relevant disciplines and implemented into the teaching packages of the three phases. The gradual progression of this subject from Phase I to II and III makes it possible to implement the subject in a more meaningful and relevant manner throughout the course. A set of objectives pertaining to the biochemistry input is incorporated into the appropriate teaching packages of each phase, in keeping with the spiral pattern of the curriculum. The appropriate modes of implementation of the objectives include Small Group Discussion (SGD), Structured Learning Units (SLU), Problem Based Learning (PBL), Fixed Learning Module (FLM), Tape Slide Programmes (TSP), Student Seminars (SS) and Structured Self Learning (SSL). In addition to all these methods, the computer-aided instruction (CAI) is also used as teaching learning units. Since multidisciplinary integration is ensured during the teaching of Biochemistry, the assessment of the subject is also conducted in a integrated manner using Multiple Choice Questions (MCQ), Short Essay Questions (SEQ), Modified Essay Questions (MEQ), Objective Structured Practical Examination (OSPE), Objective Structured Clinical Examination (OSCE), Viva and Clinical Examination. This article will deal with the spiral progression of Biochemistry from Phase I to Phase III in the integrated environment of this medical school. 相似文献
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项目运营阶段咨询主要包括项目后评价及运营咨询。运营咨询比较具体而复杂,涉及生产管理和工艺技术问题。工程项目建设完成并投人生产或使用之后所进行的总结性评价,称为后评价。后评价是对项目的执行过程、项目的效益、作用和影响进行系统的、客观的分析、总结和评价,确定项目目标达到的程度。由此得出经验和教训,为将来新的项目决策提供指导与借鉴作用。 相似文献
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Tércia Zavaglia TorresAuthor VitaeIvo Pierozzi Jr.Author Vitae Nadir Rodrigues PereiraAuthor VitaeAlexandre de CastroAuthor Vitae 《International Journal of Information Management》2011,31(2):121-127
The great contemporary organizational challenge for enterprises is to create a conceptual and methodological framework allows the management of knowledge by means of networks designed for social interaction. This statement is based on the premise that the competitive drive and sustainable success of the company depend on the introduction of new forms of production innovative processes, which can only be ensured through integrated approaches to knowledge management and the incorporation information technologies (IT). This is a reality that has already been accepted by the Brazilian Agricultural Research Corporation (Embrapa, its acronym in Portuguese), a Brazilian research, development, and innovation (RD&I) institution supporting agricultural sector. For some years now, Embrapa has been incorporating what it has learned about knowledge management into its strategic planning process. In this paper, we present a new approach to managing knowledge and information, and we analyze the need for research institutions to administer the knowledge they produce through an RD&I management model based multi- and inter-disciplinary teams, and multi-institutional research networks. 相似文献
19.
Paul Lehner Charles WorrellChrissy Vu Janet MittelStephen Snyder Eric SchulteWarren Greiff 《Information processing & management》2010
This paper describes an applied document filtering system embedded in an operational watch center that monitors disease outbreaks worldwide. At the initial time of this writing, the system effectively supported monitoring of 23 geographic regions by filtering documents in several thousand daily news sources in 11 different languages. This paper describes the filtering algorithm, statistical procedures for estimating Precision and Recall in an operational environment, summarizes operational performance data and suggests lessons learned for other applications of document filtering technology. Overall, these results are interpreted as supporting the general utility of document filtering and information retrieval technology and offers recommendations for future applications of this technology. 相似文献
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We have entered the “digital decade,” when advances in technology will become deeply woven into home life. But how will technology evolve from an experience that is technologically challenging to an experience that is intuitive and fun? This article reviews new technologies and related possibilities that Microsoft is envisioning in the context of home life. As a specific example of the impact of home technology, we review lessons learned from the adoption and integration of a home Internet device from a user experience perspective. Looking ahead to the next decade, we then take a look at Microsoft's vision for the home of the future, examining new directions. 相似文献