共查询到20条相似文献，搜索用时 31 毫秒
1.
The term ‘information’ is seldom given a careful definition and is in practice used in more than one sense. In particular there is often a failure to distinguish ‘information’ from concepts such as ‘knowledge’, ‘belief’ and ‘meaning’. One attempt to build a suitable conceptual scheme with a firm philosophical basis has been made by Dretske. In corporate contexts, the meaning and significance of information can be seen as lying in its contribution to the maintenance and development of ‘systems’ of activities. It follows that a competent analysis of corporate information requirements and a specification of the characteristics of data collection, communication and processing needed to satisfy them, both depend on an appropriate form of systems analysis. The methods used by Checkland and Wilson provide means of exploring the requirements, while the approaches of Beer and Espejo define patterns of information flow necessary for their realization. As advanced techniques of information processing develop, clearer understanding of such approaches and their theoretical basis will become important in exploiting their potential. 相似文献
2.
In this article, we use the implementation of an expert system to improve blast furnace control in the French steel industry to illustrate the problem of knowledge articulation/codification. Blast furnace related knowledge still largely takes the form of empirical know-how in general and expert know-how tied to specific individuals in particular. Therefore, the articulation/codification of knowledge in this field is a difficult task requiring the identification and selection of ‘best practices’ for the purpose of codification. This process, in turn, affects daily routines and creates new forms of generic knowledge that make use of local knowledge. These new forms of generic information reinforce the tendency to appropriate private knowledge currently prevailing in Usinor, a large French steel company, and create new routes and new insights for R&D policy. 相似文献
3.
The detailed study of crystals and the dynamics of the melting process in two and three dimensions is a fundamental and interesting research topic, which is important for increasing our knowledge of solid state physics. In natural crystals, structure information can be obtained principally by Bragg-scattering of neutrons, electrons or photons on the crystal, followed by an analysis in Fourier space. Dynamical aspects cannot be investigated in these systems. Recently, a new crystalline system was discovered whose properties are such that the melting transition can be investigated in great detail — the ‘plasma crystal’. This article presents the results of such an investigation and shows evidence for the existence of intermediate phases between the solid, liquid and gaseous phases. The observed ‘structured’ phase transition may be specific for plasma crystals but, alternatively, it may indicate the existence of intermediate stages in the melting transition more generally. 相似文献
4.
This paper examines the terminological confusion underlying the study of information use, and reviews the major studies in the field. The conclusion is that confusion in research methods is inextricably linked to a lack of clarity in terminology. Attention is drawn to the significance of different social and cultural contexts in shaping ‘information needs’, and a research scheme is evolved for the study of users of ‘professional information’ in Poland. 相似文献
5.
Tom Wilson 《Information processing & management》1999,35(6):839
This paper reviews a number of models of information behaviour and introduces a model based on the goal-directed behaviour of problem solving. A key part of the problem-solving process is held to be that of ‘uncertainty reduction’ and this aspect of the information seeking and searching process is currently being explored in a project supported by the British Library Research and Innovation Centre. Preliminary results from the pilot phase of the Project are presented which suggest possible lines of further investigation. 相似文献
6.
Back to our beginnings: information utilization, Bertram Brookes and the fundamental equation of information science 总被引：1，自引：0，他引：1
This analytical paper is in three parts. Firstly, it provides a brief review of the terrain of information utilization, a fundamental concept in the discourse of information seeking and use behavior. This review identifies dominant conceptualizations of information utilization, and identifies a research gap in relation to the cognitive dimensions of information utilization. Secondly, against this backdrop, it posits and examines Bertram Brookes' fundamental equation of information science as a theoretical framework for furthering our understanding of, and research into, the cognitive aspects of information utilization. Thirdly, it discusses some methodological aspects for investigating Brookes' equation in order to build a cumulative knowledge of the cognitive dimension of information utilization. 相似文献
7.
Researchers in indexing and retrieval systems have been advocating the inclusion of more contextual information to improve results. The proliferation of full-text databases and advances in computer storage capacity have made it possible to carry out text analysis by means of linguistic and extra-linguistic knowledge. Since the mid 80s, research has tended to pay more attention to context, giving discourse analysis a more central role. The research presented in this paper aims to check whether discourse variables have an impact on modern information retrieval and classification algorithms. In order to evaluate this hypothesis, a functional framework for information analysis in an automated environment has been proposed, where the n-grams (filtering) and the k-means and Chen’s classification algorithms have been tested against sub-collections of documents based on the following discourse variables: “Genre”, “Register”, “Domain terminology”, and “Document structure”. The results obtained with the algorithms for the different sub-collections were compared to the MeSH information structure. These demonstrate that n-grams does not appear to have a clear dependence on discourse variables, though the k-means classification algorithm does, but only on domain terminology and document structure, and finally Chen’s algorithm has a clear dependence on all of the discourse variables. This information could be used to design better classification algorithms, where discourse variables should be taken into account. Other minor conclusions drawn from these results are also presented. 相似文献
8.
Barry Boezman 《Research Policy》1978,7(4):384-405
Despite widespread dissatisfaction with the quality of scientific information employed in planning and policy-making in public agencies, relatively little is known about the scientific information acquisition behaviors of public managers. The purpose of this paper is to facilitate research on scientific information acquisition in public agencies by suggesting that: (1) planning and policy-making are ‘policy technologies’ and share certain attributes with more traditional technologies; (2) many propositions developed in the literature on information flows in R&D labs are, therefore, helpful in structuring thinking about information flows in public agencies; and (3) it may be possible self-consciously to design social and organizational structures so as to enhance informal flows of scientific information. After gleaning some of the propositions concerning scientific information flows from the R&D management literature, an ‘ideal design’ approach is employed to develop a model in which the social and organizational structures of a public agency optimize scientific information flow. 相似文献
9.
Most of the literature on university–industry (U–I) linkages assumes that these linkages are beneficial per se. We question this assumption, suggesting that not all such linkages are equally helpful. In this paper, we explore the factors driving the formation of ‘valuable U–I linkages’, conceived as those linkages between universities and firms that have a higher potential to diffuse knowledge to other firms in their regional economy. Our empirical strategy combines case-study methodology with econometric techniques using data from two wine clusters in Chile and in Italy. The firm's knowledge base is found to be a key driver of ‘valuable’ U–I linkages. We conclude that selectivity should be encouraged among policy makers endeavouring to promote U–I linkages. 相似文献
10.
Crafting the virtual prototype: how firms integrate knowledge and capabilities across organisational boundaries 总被引：1，自引：0，他引：1
Luciana D&#x;Adderio 《Research Policy》2001,30(9)
This paper examines the introduction of Integrated Software Technologies in Product Development focusing on their influence on organisational Experimentation and Prototyping practices. In particular, it explores the role of ‘virtual prototyping’ techniques, concepts and models in facilitating multi-functional processes coordination and multi-disciplinary knowledge integration. It argues that the role of software in supporting inter-functional cooperation and the coordination of knowledge and activities depends on the organisation’s ability to nurture integrating routines which support two-directional translation flows between ‘local’ (function-based) and ‘global’ (computer-embedded) knowledge and activity levels. These mechanisms also lie at the heart of dynamic capabilities’ creation and maintenance. 相似文献
11.
The role of the internet in information seeking. Putting the networked services in context 总被引：1，自引：0，他引：1
The author explores the place of the internet among other sources and channels in information seeking. Both qualitative and quantitative data were combined in the study. In 1997, the author conducted 23 theme interviews in Tampere, Finland, Secondly, the data of the national survey on the use of information technology at Finnish households conducted in 1996, based on the interviews of 2360 persons, aged 10–74 yr, were utilized. Both the features of job-related and nonwork information seeking will be discussed; however, the emphasis is on the latter. The conceptual framework of the study draws on the findings of the studies of computer-mediated communication and the uses and gratifications approach; the ideas of the ‘media richness’ theory and the ‘social influence’ theory are also utilized. E-mail and WWW appeared to be the most frequently used services in information seeking, but discussion groups and IRC were also utilized to some extent. The major research criteria for preferring the internet are the (relative) easiness of accessing a huge amount of data, savings in time and money, the opportunity to consult a number of experts simultaneously and a greater independence of certain time and place in information seeking. Thus far, the internet has not been able to supplant other sources and channels but rather complements them. This is evident, for example, in the utilization of electronic newspapers in the search for orienting information. 相似文献
12.
The authors view the phenomenon of information overload as a result of a general failure in the business community to recognize the ways in which information processes add value to information. They present a conceptual model based on the broad information attributes of truth, guidance, accessibility, scarcity and weight, and apply the model to a number of information-oriented initiatives undertaken in Standard Life. The roles of both information providers and information users are discussed, with particular emphasis on the needs of managers and decision makers for high value-added, or ‘quality’, information. The authors argue the need to bridge a long-standing gap between information providers and users in their respectice views of what the role, competences and requirements of the other is in information terms. Their value-added information model provides a way for both parties to begin communicating in meaningful terms on these issues. 相似文献
13.
John Howells 《Research Policy》1995,24(6)
This paper argues that case studies in innovation research at the level of the firm require an explicit model of how people think and act in organisations. The ‘socio-cognitive’ approach which is outlined here combines Weick's social psychological ideas with Teece's characterisation of the firm by its technological knowledge base. It is argued that a cognitive approach accommodates the tacit nature of technological knowledge well, and that artefacts can be considered as cognitive resources. A distinction is made between the social control of production technology (the firm) and of user technology (typically the market). This distinction is used as the basis for conceptualising technological innovation as the creation by individuals within the firm of ‘cognitive ensembles’ composed of cognitive elements drawn from both the technological base of the firm and market conceptions.This focus on the process by which innovation is generated within the firm leads to a brief discussion of previous work on the creative process and the relevance of the socio-cognitive approach to macro-level studies of technological change. 相似文献
14.
This paper examines nongoal oriented transactions with texts in order to investigate the information encounter in the context of daily living. Findings are reported from a larger research project based on intensive interviews with 194 committed readers who read for pleasure. The paper analyses interview responses that illuminate two aspects of the readers' experience of reading for pleasure: (1) how readers choose books to read for pleasure; and (2) books that have made a significant difference in readers' lives. The paper concludes with five themes emerging from this analysis that have implications for the information search process: the active engagement of the reader/searcher in constructing meaning from texts; the role of the affective dimension; ‘trustworthiness’; the social context of information seeking; and the meta-knowledge used by experienced readers in making judgments about texts. 相似文献
15.
16.
Peretz Shoval 《Information processing & management》1985,21(6):475-487
An expert system was developed in the area of information retrieval, with the objective of performing the job of an information specialist, who assists users in selecting the right vocabulary terms for a database search.The system is composed of two components: One is the knowledge base, represented as a semantic network, in which the nodes are words, concepts, phrases, comprising a vocabulary of the application area and the links express semantic relationships between those nodes. The second component is the rules, or procedures, which operate upon the knowledge-base, analogous to the decision rules or work patterns of the information specialist.Two major stages comprise the consulting process of the system: During the “search” stage relevant knowledge in the semantic network is activated, and search and evaluation rules are applied in order to find appropriate vocabulary terms to represent the user's problem. During the “suggest” stage those terms are further evaluated, dynamically rank-ordered according to relevancy, and suggested to the user. Explanations to the findings can be provided by the system and backtracking is possible in order to find alternatives in case some suggested term is rejected by the user.This article presents the principle, procedures and rules which are utilized in the expert system. 相似文献
17.
18.
Delineating complex scientific fields by an hybrid lexical-citation method: An application to nanosciences 总被引：2，自引：0，他引：2
Relevance of bibliometric indicators on scientific areas critically depends on the quality of their delineation. Macro-level studies, often based on a selected list of journals, accept a high degree of fuzziness. Micro-level studies rely on sets of individual articles in order to reduce noise and enhance precision of retrieval. The most usual information retrieval process is based on lexical queries with various levels of sophistication. In the experiment on Nanosciences reported here, this process was used as a first step, to delineate a ‘seed’ of literature. It has strong limitations, especially for emerging or transversal fields. In a second step, the alternative approach of citation linkages, was used to expand the bibliography starting from lexical seed. The extension process presented is ruled by three parameters, two deal with the cited side (threshold on citation score, and specificity towards the field), one with the citing side (threshold on the number of relevant references) interplaying in the ‘referencing structure’ function (RSF) introduced in a previous work. This type of combination proves effective for delineating the transversal field of Nanosciences. Further improvements of the method are discussed. 相似文献
19.
There is a marked imbalance in the literature on the information economy: despite a proliferation of grand speculations, and a large number of case studies, there are relatively few efforts to bring macrostatistics to bear on relevant developments. The main approach which has been pursued statistically, involving efforts to define and monitor an ‘information sector’ has served a useful consciousness-raising role, but is inherently limited. It is proposed that a focus on the production and use of new information technology (IT) provides a more appropriate way of conceptualizing the information economy. A study is described in which relevant data were critically appraised for the United Kingdom; the conclusions with respect to specific classes of data are summarized. It is concluded that these data do support an IT focus in statistical work; they demonstrate the availability of a great deal of statistical material which has been exploited to a surprisingly limited extent; but there are substantial elisions and omissions in available data, which need to be corrected. Rather than launch a wholesale revision of statistical series, however, it is proposed that progress can currently best be made by encouraging a plurality of experimental studies. 相似文献
20.
Mitchell S 《Endeavour》2003,27(4):150-154
Chang and Eng, the two young men who would eventually be known around the world as the ‘original’ Siamese twins, arrived in the West in 1829. They were brought to the West to be examined by medical men and to be exhibited to the general public. Throughout the 19th century in Britain and the US, ‘monstrosities’ such as Chang and Eng, as well as a host of other people with unusual anatomies, were considered both spectacles worthy of public display and edifying medical subjects with the potential to build on medical knowledge. The unique case of Chang and Eng illustrates that the boundary between what is of legitimate medical interest and what is considered merely spectacle is often blurred. 相似文献