Search (3837 results, page 1 of 192)

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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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Abstract

Mapping a knowledge domain in the interdisciplinary field of Social Memory is discussed, considering the linguistic materiality and the conceptual relations that are most appropriate to its representation. Theoretical instruments for knowledge organization in the field of information as well as of memory are both central in contemporary social studies and they must help a clear representation of a domain, especially when it lies in disciplinary frontiers. Two perspectives were used as methodological procedures: the conceptual analysis regarding the categorization of the authors' intellectual production selected from syllabus of the discipline Social Memory and Institution; and discursive fragments selected from Paul Ricour's text memory and imagination . As main results, data analysis from the first corpus pointed out six main facets that organize the memory context; and the second corpus, related to discursive materiality, organizes Ricour's ideas of memory from some philosophical points of view. As conclusions, we consider that mapping key concepts and discourses towards the main categories (ontological) and towards a group of relations derived from the discursive analysis process has enabled a possible framework for social memory indexing/searching studies. Even though this proposal is specific to a topic in a teaching program, it indicates a promising path for upcoming studies in Knowledge Organization.

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

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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 proliferation of digital knowledge repositories (DKRs) used for distributed and collocated work raises important questions about how to manage these technologies. This study investigates why individuals contribute information to DKRs by applying and extending transactive memory theory. Data from knowledge workers (N = 208) nested in work groups (J = 17) located in Europe and the United States revealed, consistent with transactive memory theory, that perceptions of experts' retrieval of information were positively related to the likelihood of information provision to DKRs. The relationship between experts' perceptions of retrieval and information provision varied from group to group, and cross-level interactions indicated that trust in how the information would be used and the interdependence of tasks within groups could explain that variation. Furthermore, information provision to DKRs was related to communication networks in ways consistent with theorizing regarding the formation of transactive memory systems. Implications for theory and practice are discussed, emphasizing the utility of multilevel approaches for conceptualizing and modeling why individuals provide information to DKRs.

Date

22. 3.2013 19:39:00

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Abstract

Community networks have existed since the 1970s when Community Memory in Berkeley, Californis, installed terminals in public places for people to read and post material of all sorts on a centralised time sharing system. Community Memory was the first known community access network. Several foundations and government agencies have funded community networks, known as freenets. Discusses the freenet movement; library involvement; the Apple Library of Tomorrow and the Morino Foundation conference on community networks and how to keep in touch with community network developments

Source

Library journal. 119(1994) no.11, S.22-24

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Source

Memory and cognition. 9(1981), S.524-532

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Abstract

Considers the underlying elements involved in the organization and representation of knowledge with particular reference to classical classification systems and expert systems. Concludes that, the computerization of intellectual processes must be based on the study and modelling of the psychological mechanisms of the functioning of the human memory

Source

International forum on information and documentation. 22(1997) no.4, S.3-10

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Content

Enthält folgende Kapitel: (1) Motivation; (2) Language philosophical foundations; (3) Structural comparison of extensions; (4) Earlier approaches towards term association; (5) Experiments; (6) Spreading-activation networks or memory models; (7) Perspective. Appendices: Heads and modifiers of 'car'. Glossary. Index. Language and computer. Word semantics and term association. Methods towards an automatic semantic classification

Footnote

Rez. in: Knowledge organization 22(1995) no.3/4, S.182-184 (M.T. Rolland)

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Abstract

Komplette Textsubstanz aller 30 Bände + Zusatz- und Quellentexte mit nahezu demselben Umfang wie die Brockhaus Enzyklopädie Umfassende Recherchemöglichkeiten, einschließlich natürlichsprachlicher Suchhilfe Frei dreh- und zoombarer 3-D-Globus mit mehr als 2 Millionen geografischen Karteneinträgen 25000 Bilder und Zugang zur Bilddatenbank der dpa mit mehr als 2 Millionen Bildern 280 Videos, 140 Animationen, 6000 Audios, 22 000 kommentierte Weblinks u.v. m. Zugriff auf die Brockhaus Enzyklopädie Online (auch per minibrowserfähigem PDA, Smartphone oder Pocket-PC*), kostenlos bis 31.12.2010 1 USB-Memory-Stick in Docking-Station Für Windows

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Date

19. 1.2019 17:42:22

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Abstract

Lists 19 tips, based on the author's experience with IBM compatible CD-ROM workstations, designed to yield improved performance by more efficient use of the computer hardware, particularly the hard disc. The tips also apply to Macintosh workstations. Covers: optimising files; placing CD-ROM software at the front of the hard disc; using disc caching software; use of the autopark facility; checking the interleave; browsing for orphan files; using CHKDSK/f command; low level formatting of hard disc; purchasing of microcomputers with large RAM caches; stepping up in MHZ and CPU; using more memory and memory management software; putting full path before software is loaded by AUTOEXEC.BAT and batch files; REM software specific lines in AUTOEXEC.BAT and CONFIG.SYS; feeding paper tp printer from a box on the flor; booting up in turbo mode and with Num Lock off; speeding up cursor keys; and protecting system enhancements

Source

CD-ROM professional. 6(1993) no.1, S.17-22

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Abstract

The authors describe user interface tools based on search histories to support legal information seekers. The design of the tools was informed by the results of a user study (Komlodi, 2002a) that examined the use of human memory, external memory aids, and search histories in legal information seeking and derived interface design recommendations for information storage and retrieval systems. The data collected were analyzed to identify potential task areas where search histories can support information seeking and use. The results show that many information-seeking tasks can take advantage of automatically and manually recorded history information. These findings encouraged the design of user interface tools building on search history information: direct search history displays, history-enabled scratchpad facilities, and organized results collection tools.

Date

22. 7.2006 18:04:19

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Abstract

A taxonomy is being developed to organize the content of a cultural heritage portal called Singapore Memory Portal, that provides access to a collection of memory postings about Singapore's history, culture, society, life/lifestyle and landscape/architecture. The taxonomy is divided into an upper-level taxonomy to support user browsing of topics, and a lower-level taxonomy to represent the types of information available on specific topics, to support user learning and information synthesis. The initial version of the upper-level taxonomy was developed based on potential users' expectations of the content coverage of the portal. The categories are centered on the themes of daily life/lifestyle, historically significant events, disasters and crises, festivals, a variety of cultural elements and national issues. The lower-level taxonomy was derived from attributes and relations extracted from essays and mindmaps produced by coders after reading memory postings for a sample of topics.

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

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Abstract

The notion of corporate or organizational memory has been discussed for over a quarter of a century. A major objective of this work is to review the conceptual foundations of organizational memory drawing from information systems research, management science, economics, systems theory, political theory, organizational behaviour, decision making, and communication theory. Provides a working definition of organizational memory, identifies ways to distinguish the contents of organizational memory, and explicates the processes of memory including knowledge acquisition, retention, maintenance and retrieval. Recommendations are made throughout the work regarding ways information managers can assess and control the effects of organizational memory

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Abstract

The 1991 IFLA programme given by the section on bibliography presented the theme that national bibliography becomes part of national memeory by recording the publications of the nation. Examines whether the widely distributed publications of popular culture are 'forgotten' by national bibliography. Considers the bibliographic control of newspapers, mass market publications and erotica in the US bibliographic control system. For the last 2 categories, searches selected titles in the OCLC database where many publications were found with wide distribution but recorded by few or no libraries. Popular culture materials should be recorded in national bibliographies to provide a more extended and historically accurate national memory

Source

International cataloguing and bibliographic control. 22(1993) no.1, S.13-17

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Abstract

We present a model of semantic memory that utilizes a high dimensional semantic space constructed from a co-occurrence matrix. This matrix was formed by analyzing a lot) million word corpus. Word vectors were then obtained by extracting rows and columns of this matrix, These vectors were subjected to multidimensional scaling. Words were found to cluster semantically. suggesting that interword distance may be interpretable as a measure of semantic similarity, In attempting to replicate with our simulation the semantic and ...

Source

Proceedings of the Seventeenth Annual Conference of the Cognitive Science Society: July 22 - 25, 1995, University of Pittsburgh / ed. by Johanna D. Moore and Jill Fain Lehmann

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Content

Vgl.: http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CEAQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fdownload%3Fdoi%3D10.1.1.91.4940%26rep%3Drep1%26type%3Dpdf&ei=dOXrUMeIDYHDtQahsIGACg&usg=AFQjCNHFWVh6gNPvnOrOS9R3rkrXCNVD-A&sig2=5I2F5evRfMnsttSgFF9g7Q&bvm=bv.1357316858,d.Yms.

Date

8. 1.2013 10:22:32

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PRECIS

Computer systems / Read only memory: Compact discs

Subject

Computer systems / Read only memory: Compact discs

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Abstract

Describes the background to the development of the multimedia CD-ROM database: American Memory; produced by the Library of Congress in cooperation with other libraries and institutions

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Abstract

Special issue aimed at promoting and celebrating the new Unesco General Information Initiative: the Memory of the World Programme