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van Loon,A.J.,1995.Facilitating the tracing of articeles in scientific and technical periodicals:aspects to be considered.Chinese Journal of Scientific and Technical Periodicals,1995,6(4),p.31-34Retrieval of an artjcle is possible only after its source has been traced.Unfortunately thetracing of journal articles is often hampered by incomplete or ambiguous data provided by theauthor,or-more frequently-by insufficient indicators provided by the editor or the publisher.It is profitable for editors and publishers,however,to facilitate the tracing of the articles intheir journals;they should hold to some fundamental rules for the purpose.The rules concernprimarily the presentation of a jouranl as an entity,the presentation of single issues,and thepresentation of individual articles,with special attention for the first page of each article.Themost important aspects are indicated.  相似文献   

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This paper investigates an application of a ball-screw inerter for mitigation of impact loadings. The problem of impact absorption is to provide a minimum reaction force that optimally decelerates and eventually stops an impacting object within the available absorber stroke. It significantly differs from vibration mitigation problems which are typical application of inerters. The paper demonstrates that the optimum absorption can be achieved by fully passive means. For known values of the object mass and inerter parameters, the obtained solution is independent of the impact velocity. The optimum passive absorption is achieved by employing a variable thread lead. As a result, two force components emerge, the typical inertance-related force and a damping-like term, and sum up to provide the optimum constant deceleration force. This result is relatively unique: conventional absorbers do not provide a constant force even with complex active control systems. Finally, an optimization problem is formulated to reduce the influence of process uncertainties (range of possible mass values, unknown friction). The results are verified and analyzed in a numerical example.  相似文献   

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This paper examines the rationale for copyright and how the copyright exemption of the law promotes scholarship. It examines the possible challenges that may be faced by scholars and academic librarians in implementing the copyright fair dealing exemption in the digital environment following that digital information is protected by copyright law and licensing agreements. The paper attempts to propose possible measures that could be implemented for copyright exceptions to better function and promote scholarship in the digital environment.  相似文献   

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What's in a Name? Some Reflections on the Sociology of Anonymity   总被引:1,自引:0,他引:1  
To paraphrase Mark Twain, reports of either the recent death or coming dominance of anonymity have been greatly exaggerated. This article is a beginning effort to lay out some of the conceptual landscape needed to better understand anonymity and identifiability in contemporary life. I suggest seven types of identity knowledge, involving legal name, location, symbols linked and not linked back to these through intermediaries, distinctive appearance and behavior patterns, social categorization, and certification via knowledge or artifacts. I identify a number of major rationales and contexts for anonymity (free flow of communication, protection, experimentation) and identifiability (e.g., accountability, reciprocity, eligibility) and suggest a principle of truth in the nature of naming , which holds that those who use pseudonyms on the Internet in personal communications have an obligation to indicate they are doing so. I also suggest 13 procedural questions to guide the development and assessment of any internet policy regarding anonymity.  相似文献   

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In this paper, we give the necessary and sufficient conditions for a function f to be a lower Bohl function of a diagonal discrete linear time-varying systems.  相似文献   

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In this paper we reflect on a number of IT related challenges during the COVID19 pandemic, primarily from a CIO and IT professionals perspective. We consider three time periods, namely the period before the pandemic, the response to the pandemic and the period after it. For each period we discuss the key challenges that practitioners faced and outline important areas to consider for the future. Hopefully, the lessons learnt and the experiences gained will positively inform future academic research and practice.  相似文献   

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《普罗米修斯》2012,30(3):295-300

The images of America exported by entertainment and information media companies have created very high expectations in foreign audiences. Some recipients overhearing American media want to immigrate to the US and/or study in Western universities. In the process, a few of them encounter difficulties deceiving their high expectations. Their frustrations have been exploited by some fanatic ideologues for their own agendas, resulting in anti-American terrorism. The American media should be aware of the unintended consequences of their global exhibition of media, and more careful attention should be given to the way immigrants or graduate students sojourning in the US live their day-to-day encounters.  相似文献   

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This article provides a more differentiated understanding of mobile health consumers, and considers whether health app use may contribute to new digital inequalities. It focuses on factors associated with mobile health app use, and identifies which factors explain the use of different types of health apps. Data from a large representative sample of the Dutch population (N = 1,079) show that mobile health app users were generally younger, higher educated, and had higher levels of e-health literacy skills than non-users. Interestingly, different usage patterns were found for specific types of health apps. Theory and policy implications are discussed.  相似文献   

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The abundance of the element oxygen is not only crucial for life at the surface of the Earth, but also greatly affects the properties and dynamics of the interi...  相似文献   

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This article examines the digital divide in terms of access and the cultural use purposes of the Internet in Finland, the United Kingdom, and Greece. The analysis is based on data from Finnish, British, and Greek sections of Eurobarometer collected in 2013 (N = 3,009). Separate measures for class and status are applied in the analysis. The findings indicate that both access to and use of the Internet for cultural purposes are affected by a number of interdependent factors, whose effects and strengths vary significantly among the countries.  相似文献   

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We examine patent licensing business models of non-practicing entities that generate revenue by selling, licensing, or litigating patents. They may also pursue R&D activities, invent new technologies, or provide services to inventors or product companies. We describe their business models and patent market behavior and then compare their litigation strategies against product companies using a matched sample of highly comparable patents. The main differences among patent licensing firms stem from their technological capabilities, patent portfolio sizes, and external relationships. We find that licensing firms with technological capabilities often pursue litigation until decision and engage in forum shopping. In contrast, litigation incidence, parties involved, and outcomes are primarily determined by patent characteristics, not entity types. Licensing business models drive the acquisition of certain types of patents that influence the outcomes of the patent system. We argue that patent policy should strengthen mechanisms to discover invention quality rather than focus on the amount of litigation or types of entities.  相似文献   

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In our paper we present an experimental study which investigated the possibility to project the need for information specialists serving knowledge workers in knowledge industries on the basis of an average university library serving their counterparts at a university. Information management functions, i.e. functions and processes related to information evaluation, acquisition, metadata creation, etc., performed in an average university library are the starting point of this investigation. The fundamental assumption is that these functions do not only occur in libraries but also in other contexts like, for instance, in knowledge industries. As a consequence, we try to estimate the need for information professionals in knowledge industries by means of quantitative methods from library and information science (Library Planning Model) and economics (input output analysis, occupational analysis). Our study confirms the validity of our assumption. Accordingly, the number of information specialists projected on the basis of university libraries is consistent with their actual number reported in national statistics. However, in order to attain a close fit, we had to revise the original research model by dismissing the split-up of information specialists into reader services and technical services staff.  相似文献   

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There are many obstacles to effective open innovation in the public sector context, especially at the “fuzzy front end” (FFE), where the need or opportunity is known but serious resources have not yet been committed to possible solutions. In this paper, we report on a theoretically inspired and practically tested methodology for FFE public sector digital innovation. The methodology was purpose-built for the context and has been progressively refined using reflection-on-practice, but broadly consists of a hybrid of private sector open innovation practices, and agile software development processes. We outline the background, context, principles, stages and artefacts. Then we evaluate the method in terms of barriers and opportunities to FFE public sector innovation. We note that establishing the necessary context: a nurturing environment; cross-agency commitments in cash and in kind; and boundary spanning appointments, is as important to success as is the detailed execution of the method.  相似文献   

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The case in brief On 27 October 2005,the Publisher of the Xian Urban Economic Guidance News reprinted,on the Urban Eco- nomic Guidance News,part of Huang Shijiang's article enti- tled Essential Issues of and Dialectical Reflection on the De- velopment of Vocational School of Higher Learning in China carried in the magazining of Vocational Technical Education.  相似文献   

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