Search (559 results, page 1 of 28)

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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

Source

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

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Source

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

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Abstract

This paper suggests a framework and systematic definitions for 6 words commonly used in dthe field of information science: data, information, knowledge, wisdom, inspiration, and intelligence. We intend these definitions to lead to a quantification of information science, a quantification that will enable their measurement, manipulastion, and prediction.

Date

22. 2.2007 18:56:23
22. 2.2007 19:22:13

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Abstract

While knowledge management is seen to be the biggest thing to hit the information profession since the Internet, the concept is surrounded by confusion. Traces the progress of knowledge on the information continuum which extends from data to informed decision. The reason for which knowledge management has suddenly become inluential is that its principal proponents now are not information professionals but management consultants seeking to retain their intellectual capital. Explains the reasons for this, the practical meaning of knowledge management and what information professionals should be doing to take advantage of the vogue

Source

Information world review. 1997, no.130, S.22

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Abstract

Purpose - This paper seeks to organize the extensive field and to compile the complete list of information limits. Design/methodology/approach - A thorough analysis of literature from the field beginning with the 1960s up to the present has been performed. Findings - A universal typology of information limits has been proposed. A list of barriers mentioned in the literature of the subject has been compiled. Research limitations/implications - The term "information limits" is not commonly used. Originality/value - The complete list of information limits with bibliographical hints (helpful for future research) is presented.

Date

12. 7.2011 18:22:52

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Abstract

Discusses information in the context of information resources management arguing that it is an essential resource for every organization but one that needs to be managed better. Examines information as a resource, as an asset, as a commodity, as a rubbish

Source

Managing information. 3(1996) no.6, S.22-23

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Abstract

Fundamental forms of information, as well as the term information itself, are defined and developed for the purposes of information science/studies. Concepts of natural and represented information (taking an unconventional sense of representation), encoded and embodied information, as well as experienced, enacted, expressed, embedded, recorded, and trace information are elaborated. The utility of these terms for the discipline is illustrated with examples from the study of information-seeking behavior and of information genres. Distinctions between the information and curatorial sciences with respect to their social (and informational) objects of study are briefly outlined.

Content

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.

Date

22. 3.2009 18:15:22

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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

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Abstract

The terms: information society, the information age, the knowledge based society and the knowledge driven economy are all now familiar terms. Governments have been promoting them, the media has been reporting on them and leaders use them to indicate progress and advancement. In light of all this exposure, considers just how far along the road are these societies from the industrial age towards the information age

Date

22. 5.1999 19:55:13

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Abstract

How does information lead to changes in human behavior? Why have current information theories been inadequate to shed light on this and related questions? Library and Information Science (LIS) has arrived at a crucial juncture in its relatively brief theoretical history. In addition to the cognitive and physical perspectives in our study of information, a new paradigm has been suggested; the affective paradigm. This new perspective offers keys to unlocking questions about the nature of the interaction of human and information. In recent years we have developed deeper knowledge and deeper specializations, drawing together and combining knowledge from multiple fields in order to advance our own knowledge. The relationship between information needs and information seeking has been well studied. The ways in which people use information is not as well understood because of the complex nature of human behavior. Drawing from other fields that study human behavior, however, muddies the traditional boundaries of LIS, creating some possible discomfort as we trespass into lesser known intellectual territory. Pushing our boundaries also forces questions of our self-identity as a discipline. What constitutes Library and Information Science, either in whole or in part, becomes more difficult to define and can lead to greater fragmentation. Alternatively, the incorporation of multiple perspectives may be the defining core of what constitutes LIS. The focus of this talk is to look at LIS from the outside in, from a multidisciplinary perspective, in order to shed light on questions of how information can lead to changes in human behavior. Drawing from other fields of study, the impact of information on human behavior will be explored in light of what other fields may have to offer.

Date

16. 3.2019 17:32:22

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Abstract

When modelling pieces of unstructured information, such as full text forms, it is often necessary to recognize them based on a semantic principle, through which properties of information can be derived. Since there are several semantic principles that are related to each other, the resulting properties are also mutually relevant. This relevance is called 'relativity of concepts', whose modelling is indispensible to dealing exclusively with such properties of information that are invariant under the change of the underlying semantic principles. This paper uses the self-structured semantic relationship model to account for the relativity of concepts. More specifically, a set of local views rather than a single global view are introduced to the model, which greatly enhances the flexibility of the model's expressive power. Furthermore, semantic equivalence between the view-based information structures is also formalized in the proposed model. This truns out to be useful when integrating pieces of information that are structure based on different principles

Source

International forum on information and documentation. 20(1995) no.1, S.22-30

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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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Abstract

Within dynamic organizations, information systems often fail to adapt to changing requirements and structures. The book presents a different view of IS provision, based on end-user information systems construction, as a means of avoiding many of the recognized problems. Adopting a philosophy of constructivism, emphasizing psychological and social factors in information construction, the authors examine different types of systems across natural and social sciences

Content

Enthält u.a. die Kapitel: A constructivist approach to systems, science and constructivism, organizations as systems

Date

25.12.2001 13:22:30

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Abstract

Survivors of intimate partner violence face more than information gaps; many face powerful barriers in the form of information myths. Triangulating data from in-depth interviews and community bulletin board postings, this study incorporates insights from survivors, police, and shelter staff to begin mapping the information landscape through which survivors move. An unanticipated feature of that landscape is a set of 28 compelling information myths that prevent some survivors from making effective use of the social, legal, economic, and support resources available to them. This analysis of the sources, contexts, and consequences of these information myths is the first step in devising strategies to counter their ill effects.

Date

22. 3.2009 19:16:44

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Abstract

In order to test how associated verbal and spatial stimuli are processed in memory, undergraduates studied a reference map as either an intact unit or as a series of individual features, and read a text containing facts related to map features. In Addition, the map was presented either before or after reading the text. Seeing the intact map prior to the text led to better recall of both map information and facts from the text. These results support a dual coding modell, where stimuli such as maps possess a retrieval advantage because they allow simultaneous representation in working memory. This advantage occurs because information from the map can be used to cue retrieval of associated verbal facts, without exceeding the processing constraints of the memorial system

Date

22. 7.2000 19:18:18

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Abstract

The idea of obtaining subject access to information by being able to visualize an information space, and to navigate through that space toward useful or interesting information, is attractive and plausible. However, this approach to subject access requires additional cognitive processing associated with the interaction of cognitive facilities that deal with concepts and those that deal with space. This additional cognitive processing may cause problems for users, particularly in dealing with the dimensions, the details, and the symbols of information space. Further, it seems likely that different cognitive abilities are associated with conceptual and spatial cognition. As a result, users who deal well with subject access using traditional conceptual approaches may experience difficulty in using visualization and navigation. An experiment designed to investigate the effects of different cognitive abilities on the use of both conceptual and spatial representations of information is outlined

Date

22. 9.1997 19:16:05

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Abstract

The project Information Pricing was carried out during the summer semester 2004 by four students and two lecturers. Aim of the project was to develop a new product- and pricing concept for the research centre of the Public Library Cologne. The intention was to increase its competitiveness, especially in the business customer segment. The initiating factor for the project was the significant decrease in requests from 1997 to 2001. This paper describes the development of different attributes of information, analysing various pricing concepts of private and public information providers as well as the development of a pricing concept which is aligned to the requirements and performance of the research centre. The final result was an improved pricing system for an enhanced range of products. The first step was getting more familiar with the characteristics of information and the methods that can be used to measure the value of information. One of the key issues to consider is the value of information for a customer and the question how this value can be charged. In order to be capable of evaluating all issues of information pricing and to develop a solid pricing system, it was essential to analyse and assess pricing modules based on their intension of use. For example, the differentiation of the pricing concept with regard to certain user segments like business or private users as well as members and non-members. Another option is to define prices dependant on the requested response times for research tasks and thereby reflect the urgency of those tasks directly in the pricing concept. Furthermore, the qualitative and quantitative differentiation of information has to be taken into account. All described approaches - and also combinations of these - should be considered when developing a new pricing system. It is also important to recognize the special role of the research centre as a part of the public library. Libraries fulfil a public contract for their users. In this case it has to be ensured that people of all social backgrounds have the chance to gain access to all kind of information. While presenting results to the Public library Cologne some problems arose, mainly the gap between theoretical and practical feasibility. The final result was a practical pricing system, which is easy to implement for the research centre and which is described in the paper.

Date

22. 7.2009 9:24:59

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Abstract

Purpose With the shift to an information-based society and to the de-centralisation of information, information overload has attracted a growing interest in the computer and information science research communities. However, there is no clear understanding of the meaning of the term, and while there have been many proposed definitions, there is no consensus. The goal of this work was to define the concept of "information overload". In order to do so, a concept analysis using Rodgers' approach was performed. Design/methodology/approach A concept analysis using Rodgers' approach based on a corpus of documents published between 2010 and September 2020 was conducted. One surrogate for "information overload", which is "cognitive overload" was identified. The corpus of documents consisted of 151 documents for information overload and ten for cognitive overload. All documents were from the fields of computer science and information science, and were retrieved from three databases: Association for Computing Machinery (ACM) Digital Library, SCOPUS and Library and Information Science Abstracts (LISA). Findings The themes identified from the authors' concept analysis allowed us to extract the triggers, manifestations and consequences of information overload. They found triggers related to information characteristics, information need, the working environment, the cognitive abilities of individuals and the information environment. In terms of manifestations, they found that information overload manifests itself both emotionally and cognitively. The consequences of information overload were both internal and external. These findings allowed them to provide a definition of information overload. Originality/value Through the authors' concept analysis, they were able to clarify the components of information overload and provide a definition of the concept.

Date

22. 4.2023 19:27:56

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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

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Abstract

The emergence of Knowledge Management (KM) over the last decade has triggered the question how or even whether this new management discipline can be distinguished from the established field of Information Management (IM). In this paper we critically examine this demarcation issue from two angles. First we will investigate to what extent the difference between IM and KM can be anchored an a conceptual distinction between their respective objects: information and knowledge. After having shown that this widely adopted strategy promises little success, we will shift our attention to an examination of the fundamental objectives or guiding principles behind both disciplines. Seen from this angle we argue that KM in order to foster organizational learning, innovation and strategy flexibility, should adopt a postmodern epistemological perspective that is geared to the management of incommensurability and difference within and between organizations.

Source

Knowledge management: organization competence and methodolgy. Proceedings of the Fourth International ISMICK Symposium, 21-22 October 1996, Netherlands. Ed.: J.F. Schreinemakers