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Abstract

A summary of brain theory is given so far as it is contained within the framework of Localization Theory. Difficulties of this "conventional theory" are traced back to a specific deficiency: there is no way to express relations between active cells (as for instance their representing parts of the same object). A new theory is proposed to cure this deficiency. It introduces a new kind of dynamical control, termed synaptic modulation, according to which synapses switch between a conducting and a non- conducting state. The dynamics of this variable is controlled on a fast time scale by correlations in the temporal fine structure of cellular signals. Furthermore, conventional synaptic plasticity is replaced by a refined version. Synaptic modulation and plasticity form the basis for short-term and long-term memory, respectively. Signal correlations, shaped by the variable network, express structure and relationships within objects. In particular, the figure-ground problem may be solved in this way. Synaptic modulation introduces exibility into cerebral networks which is necessary to solve the invariance problem. Since momentarily useless connections are deactivated, interference between di erent memory traces can be reduced, and memory capacity increased, in comparison with conventional associative memory

Content

Originally published July 1981 as Internal Report 81-2, Dept. of Neurobiology, Max-Planck-Institute for Biophysical Chemistry, 3400 Gottingen, W.-Germany.

Source

http%3A%2F%2Fcogprints.org%2F1380%2F1%2FvdM_correlation.pdf&usg=AOvVaw0g7DvZbQPb2U7dYb49b9v_

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Footnote

Rez. in: Philosophisch-ethische Rezensionen vom 09.11.2019 (Jürgen Czogalla), Unter: https://philosophisch-ethische-rezensionen.de/rezension/Goedert1.html. In: B.I.T. online 23(2020) H.3, S.345-347 (W. Sühl-Strohmenger) [Unter: https%3A%2F%2Fwww.b-i-t-online.de%2Fheft%2F2020-03-rezensionen.pdf&usg=AOvVaw0iY3f_zNcvEjeZ6inHVnOK]. In: Open Password Nr. 805 vom 14.08.2020 (H.-C. Hobohm) [Unter: https://www.password-online.de/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzE0MywiOGI3NjZkZmNkZjQ1IiwwLDAsMTMxLDFd].

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Source

Politische Meinung. 381(2001) Nr.1, S.65-74 [https%3A%2F%2Fwww.dgfe.de%2Ffileadmin%2FOrdnerRedakteure%2FSektionen%2FSek02_AEW%2FKWF%2FPublikationen_Reihe_1989-2003%2FBand_17%2FBd_17_1994_355-406_A.pdf&usg=AOvVaw2KcbRsHy5UQ9QRIUyuOLNi]

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Abstract

With new interactive technology, information science can use its traditional information focus to increase user satisfaction by designing information retrieval systems (IRSs) that inform the user about her task, and help the user get the task done, while the user is on-line interacting with the system. By doing so, the system enables the user to perform the task for which the information is being sought. In previous articles, we modeled the information flow and coding operations of a user who has just received an informative IRS message, dividing the user's processing of the IRS message into three subsystem levels. In this article, we use Kintsch's proposition-based construction-integration theory of discourse comprehension to further detail the user coding operations that occur in each of the three subsystems. Our enabling devices are designed to facilitate a specific coding operation in a specific subsystem. In this article, we describe an IRS device made up of two separate parts that enable the user's (1) decoding and (2) encoding of an IRS message in the Comprehension subsystem

Source

Journal of the American Society for Information Science. 51(2000) no.11, S.1033-1046

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Abstract

The history of encyclopedias and wholly new forms of encyclopedias are briefly reviewed. The possibilities and problems that hypertext presents as a basis for new forms of encyclopedias are explored. The capabilities of current systems, both experimental and commercially available, are outlined, focusing on new possibilities for authoring and design and for reading the retrieval. Examples of applications already making use of hypertext are given.

Date

7. 1.1996 22:47:52

Source

Information, knowledge, evolution. Proceedings of the 44th FID Congress, Helsinki, 28.8.-1.9.1988. Ed. by S. Koshiala and R. Launo

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Abstract

This article is about the mental coding processes involved in the flow of 'information' when the user is interacting with an 'enabling' information retrieval system. An 'enabling' IR system is designed to stimulate the user's grasping towards a higher understanding of the information need / problem / task that brought the user to the IR system. C. Shannon's (1949/1959) model of the flow of information and K.R. Popper's (1975) 3 worlds concept are used to diagram the flow of information between the user and system when the user receives a stimulating massage, with particluar emphasis on the decoding and encoding operations involved as the user processes the message. The key difference between the model of information flow proposed here and the linear transmission, receiver-oriented model now in use is that we assume that users of a truly interactive, 'enabling' IR system are primarily message senders, not passive receivers of the message, because they must create a new message back to the system, absed on a reconceptualization of their information need, while they are 'online' interacting with the system

Date

22. 5.1999 14:51:49

Source

Journal of the American Society for Information Science. 50(1999) no.6, S.544-552

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Abstract

Describes a framework for constructing a cognitive model of users' information searching behaviour. Reports on progress in developing the pre-theoretical framework into a theoretical model. Its major components are a process model of information searching and knowledge representations necessary to support the process. The process model contains activities, which describe information searching as the cognitive tasks and strategies that dictate physical or cognitive user actions. The main activities performed in the retrieval process are: problem identification, need articulation, query formulation and results evaluation

Source

Interacting with computers. 10(1998) no.3, S.321-351

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Abstract

Controversies in modern ideas in social work directly reflect controversies in attitudes toward computer applications. Fundamental to modern problems with technology is the persisting dispute between 2 philosophical traditions. On one side there is the formal and technically oriented thinking: on the other the reflexive, dialectical and hermeneutical approach. The reappearance of the conflict in actual discussion is described considering data storage, formal methodology and the social impact of computer use

Source

Computers in human services. 9(1993) nos.3/4, S.455-463

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Abstract

Presents an overview of research on information use. The majority of use and user studies are surveys which focus on the consulting of different information sources and channels. In most studies, however, the substantial issues of information use are omitted. Discusses conceptual and terminological questions of information use and knowledge utilization. No consensus on the definition of these concepts exists among researchers because they can have no direct access to individual processes of information use. Examines the contributions made to information use theory by Brenda Dervin and Robert S. Taylor. Reviews the categories of uses specified in Dervin's sense making theory and discusses Taylor's concept of information use environments. Considers some methodological questions concerning the challenges of empirical research on information use

Footnote

Research on information use in the field of information studies

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Abstract

With new interactive technology, we can increase user satisfaction by designing information retrieval systems that inform the user while the user is on-line interacting with the system. The purpose of this article is to model the information processing operations of a generic user who has just received an information message from the system and is stimulated by the message into grasping at a higher understanding of his or her information task or problem. The model consists of 3 levels, each of which forms a separate subsystem. In the Perseption subsystem, the user perceives the system message in a visual sense; in the Comprehension subsystem, the user must comprehend the system message; and in the Application subsystem, the user must (a) interpret the system message in terms of the user's task at hand, and (b) create and send a new message back to the system to complete the interaction. Because of the information process stimulated by the interaction, the user's new message forms a query to the system that more accurately represents the user's information need than would have been the case if the interaction had not taken place. This article proposes a device to enable clarification of the user's task, and thus his/her information need at the Application subsystem level of the model

Source

Journal of the American Society for Information Science. 51(2000) no.5, S.417-426

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Abstract

Three meanings of "information" are distinguished: "information-as-process"; "information-as-knowledge"; and "information-as-thing", the attributive use of "information" to denote things regarded as informative. The nature and characteristics of "information-as-thing" are discussed, using an indirect approach ("What things are informative?"). Varieties of "information-as-thing"include data, text, documents, objects, and events. On this view "information" includes but extends beyond communication. Whatever information storage and retrieval systems store and retrieve is necessarily "information-as-thing"

Source

Journal of the American Society for Information Science. 42(1991), S.351-360

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Abstract

Library and information science (LIS) is a discipline based on communication. Research questions in LIS include those focusing on the retrieval use of information, information services, and information technology. Moreover, the questions asked and the thought relevant to the study of information are communicated formally within the profession primarily through the literature. This sensitivity to communication suggests that discourse analysis has the advantage of being able to address questions regarding both spoken and written communications and so can be applied to matters of articulations of purpose in the field. 2 key elements of language form the heart of discourse analysis: form and function. Applications of discourse analysis to information include investigations of the social, political, and technical uses of the word information as they have implications for theory and practice

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Abstract

In a recent article, Birger Hjørland (2007) critiqued the author's efforts in defining and conceptualizing information as a core concept in information science (Bates, 2005, 2006). It is argued that Hjørland has seriously misrepresented and confused the actual line of argument in those articles. Specifics of that case are presented, and the reader is urged to return to the original Bates articles to understand her claims. In those articles, Bates attempted to develop a broad conception of information, as well as a number of subtypes of information, for use in the field of information science. The development of information was related to evolutionary processes, with emergence as a significant theme.

Content

Bezugnahme auf: Hjoerland, B.: Information: Objective or subjective/situational? In: Journal of the American Society for Information Science and Technology, 58(2007) no.10, S.1448-1456. - Vgl. Erwiderung: Hjoerland, B.: The controversy over the concept of information: a rejoinder to Professor Bates. In: Journal of the American Society for Information Science and Technology. 60(2009) no.3, S.643. Vgl. auch: Bates, M.J.: Birger Hjørland's Manichean misconstruction of Marcia Bates' work. In: Journal of the American Society for Information Science and Technology. 62(2011) no.10, S.2038-2044.

Source

Journal of the American Society for Information Science and Technology. 59(2008) no.5, S.842-844

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Abstract

Information behavior theory covers different aspects of the totality of information-related human behavior rather unevenly. The transitions or trading zones between different types of information activities have remained perhaps especially under-theorized. This article interrogates and expands a conceptual apparatus of information making and information taking as a pair of substantial concepts for explaining, in part, the mobility of information in terms of doing that unfolds as a process of becoming rather than of being, and in part, what is happening when information comes into being and when something is taken up for use as information. Besides providing an apparatus to describe the nexus of information provision and acquisition, a closer consideration of the parallel doings opens opportunities to enrich the inquiry of the conditions and practice of information seeking, appropriation, discovery, and retrieval as modes taking, and learning and information use as its posterities.

Series

JASIS&Tspecial issue on information behavior and information practices theory

Source

Journal of the Association for Information Science and Technology. 73(2022) no.4, S.528-541

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Source

Information processing and management. 22(1986) no.5, S.373-383

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Abstract

Presents a study of information seeking behaviour and information use viewed from the social constructionist viewpoint. Introduces social constructionism and presents a social constructionist critique of previous research into information use. Reviews generally the nature of discursive action and its analysis and focuses on the principle issue of information use as a discursive action

Source

Information seeking in context: Proceedings of an International Conference on Research in Information Needs, Seeking and Use in Different Contexts, 14-16 August 1996, Tampere, Finland. Ed.: P. Vakkari u.a

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Abstract

Information Science (IS) is commonly said to study collection, classification, storage, retrieval, and use of information. However, there is no consensus on what information is. This article examines some of the formal models of information and informational processes, namely, Situation Theory and Shannon's Information Theory, in terms of their suitability for providing a useful framework for studying information in IS. It is argued that formal models of information are concerned with mainly ontological aspects of information, whereas IS, because of its evaluative role with respect to semantic content, needs an epistemological conception of information. It is argued from this perspective that concepts of epistemological/aesthetic/ethical information are plausible, and that information science needs to rise to the challenge of studying many different conceptions of information embedded in different contexts. This goal requires exploration of a wide variety of tools from philosophy and logic.

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.10, S.2019-2031

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Abstract

The existing tools of relevance, recall and precision have their place in the evaluation of information retrieval systems, but do not tell the whole story. They cannot, for example, make allowance for the enquirer already knowing of the existence of a document or the subsequent availability of items. Utility theory goes part way towards meeting the need by assessing the likely usefulness of documents. Arguing that information is not information until it is used, the paper suggests an additional approach to information system evaluation - the 'use-value' of information

Source

Journal of document and text management. 2(1994) no.1, S.35-47

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Abstract

I analyze the text of an article that appeared in this journal in 2007 that published the results of a questionnaire in which a number of experts were asked to define the concepts of data, information, and knowledge. I apply standard information retrieval techniques to build a list of the most frequent terms in each set of definitions. I then apply information extraction techniques to analyze how the top terms are used in the definitions. As a result, I draw data-driven conclusions about the aggregate opinion of the experts. I contrast this with the original analysis of the data to provide readers with an alternative viewpoint on what the data tell us.

Date

16. 6.2014 19:22:57

Source

Journal of the Association for Information Science and Technology. 65(2014) no.6, S.1279-1287

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Date

15. 7.2002 14:22:55

LCSH

Information storage and retrieval systems / Social aspects

PRECIS

Society / Effects of technological development in information systems

Subject

Information storage and retrieval systems / Social aspects
Society / Effects of technological development in information systems