The Experts below are selected from a list of 147 Experts worldwide ranked by ideXlab platform
R Deplanque - One of the best experts on this subject based on the ideXlab platform.
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registration of substances in the gmelin Factual Database
Analytica Chimica Acta, 1992Co-Authors: B Roth, H U Bohmer, R DeplanqueAbstract:Abstract In the early stages of the development of the Gmelin Factual Database it was shown that coordination compounds in inorganic chemistry cannot be limited to coordination numbers up to 4; so a methodology was developed which enables the registration of structures in which the central atom can have a coordination number up to 20 allowing for up to nine separate ligands.
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The Integrated Gmelin Information System: New developments in information processing
Analytica Chimica Acta, 1992Co-Authors: A. Nebel, R Deplanque, U. Tölle, R. Maass, G. Olbrich, P. ListerAbstract:Abstract The Gmelin Information System consists of the Gmelin Handbook of Inorganic and Organometallic Chemistry and the Gmelin Factual Database. This information system is constructed such that the Factual Database is used as the primary source for the handbook production process. The development of some novel software tools is described. These software tools enable the handbook authors to examine the Factual data from the Database and to add text; in a further step these parts are processed to form a draft manuscript. The completed handbook manuscripts are transferred to the printer using a newly implemented SGML procedure. These developments enable the direct creation of a printed handbook volume from the Gmelin Factual Database.
Barbara M Wildemuth - One of the best experts on this subject based on the ideXlab platform.
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IIiX - Tactics used when searching for digital video
Proceeding of the third symposium on Information interaction in context - IIiX '10, 2010Co-Authors: Barbara M Wildemuth, Jung Sun Oh, Gary MarchioniniAbstract:In a world increasingly using multimedia materials, it is important for us to understand how people search Databases for videos, and how the medium of the object in the collection may provide a context for those search behaviors. Specifically, this paper is concerned with the moves and tactics that 36 people used while conducting 141 searches of a video retrieval system. Transaction logs captured the participants' search strategies; each search move was coded and the data were examined for maximal repeating patterns (MRPs). Thirteen different search patterns (i.e., tactics) were used by the study participants; the tactics were mainly characterized by (1) the addition of concepts, resulting in a decrease in the size of the results set, and (2) frequent display and browsing of the search results. To explore the possibility that the multimedia character of the materials in the collection might affect people's search behaviors, these results are compared to results from an earlier study of search tactics used when searching a textual/Factual Database.
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The effects of domain knowledge on search tactic formulation
Journal of the Association for Information Science and Technology, 2004Co-Authors: Barbara M WildemuthAbstract:A search tactic is a set of search moves that are temporally and semantically related. The current study examined the tactics of medical students searching a Factual Database in microbiology. The students answered problems and searched the Database on three occasions over a 9-month period. Their search moves were analyzed in terms of the changes in search terms used from one cycle to the next, using two different analysis methods.Common patterns were found in the students' search tactics; the most common approach was the specification of a concept, followed by the addition of one or more concepts, gradually narrowing the retrieved set before it was displayed. It was also found that the search tactics changed over time as the students' domain knowledge changed. These results have important implications for designers in developing systems that will support users' preferred ways of formulating searches. In addition, the research methods used (the coding scheme and the two data analysis methods--zero-order state transition matrices and maximal repeating patterns [MRP] analysis) are discussed in terms of their validity in future studies of search tactics.
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medical students confidence judgments using a Factual Database and personal memory a comparison
Journal of the Association for Information Science and Technology, 1999Co-Authors: Karen M Okeefe, Barbara M Wildemuth, Charles P FriedmanAbstract:In order to determine whether medical students can recognize when an information need has been fulfilled and when it has not, this study examined the quality of medical students' confidence estimates in answering short-answer questions dealing with bacteriology, based upon their personal knowledge alone and what they were able to retrieve from a Factual Database in microbiology. Twelve students, assessed over three occasions, remained in the final sample. The results indicate that students displayed a positive relationship between their expertise in answering the questions and the amount of overconfidence they indicated (the opposite of the hard easy effect) for the personal knowledge task using a partial credit format. For the Database-assisted task using the partial credit format, students showed less overconfidence in their answers with greater expertise in using the Database. For both the personal knowledge and Database-assisted tasks using a binary format (all or nothing correct), the students displayed the opposite of the hard-easy effect. We conclude that the patterns of confidence estimates (in the form of Brier scores), and thus students' ability to recognize whether their information need has been fulfilled, differ with varying degrees of expertise in both the personal knowledge responses and the Database-assisted responses for both the partial credit and binary formats. Taking into consideration the fact that when subjects, in this case future medical practitioners, are extremely overconfident, they stop looking for information long before they have found material that is relevant, the results have broad implications for medical practice and information seeking.
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Medical students' personal knowledge, searching proficiency, and Database use in problem solving
Journal of the Association for Information Science and Technology, 1995Co-Authors: Barbara M Wildemuth, Charles P Friedman, Ruth De Bliek, Dean D. FileAbstract:The relationship between personal knowledge in a domain and searching proficiency in that domain, and the relationship between searching proficiency and Database‐assisted problem‐solving performance were the foci of this study. On four assessment occasions over a 2‐year period, 36 medical students solved problems in three biomedical domains (bacteriology, pharmacology, and toxicology) with and without assistance from a Factual Database in the relevant domain. There was little evidence of any relationship between personal domain knowledge and searching proficiency (i.e., search results, selection of search terms, improvement in selection of search terms over the course of the search, and efficiency). Search results, selection of search terms, and efficiency were found to be related to Database‐assisted problem‐solving performance. © 1995 John Wiley & Sons, Inc.
Ming-der Yang - One of the best experts on this subject based on the ideXlab platform.
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Legal protection and data access of remote sensing and GIS Database
2007 IEEE International Geoscience and Remote Sensing Symposium, 2007Co-Authors: Yi-ping Chen, Ming-der YangAbstract:Recently, remote sensing data and geographic information system (GIS) have been variously applied to research and industry in the world. Most of cases, the Database of geographic information is a big treasure belonging to a company or a government. However, the digital data set is expensive to generate but easy to copy and propagate. In a private sector, it would be reluctant to invest a great amount of money unless profits can be expected to make. Thus, proper protection is necessary to foster the development of this kind of information industry. This article describes the related laws and regulations of Database protection. According to U.S. Supreme court case, Feist Publications vs. Rural Telephone Service Company, Inc., a Factual compilation is protected only if there is intellectual creativity either in the selection of the facts contained or in their arrangements as presented so that Factual Database would be unprotected by copyright. However, remote sensing and GIS data are computerized and digital versions of maps with added information, functionality, and complexity that provide a further opportunity for original expression. Therefore, whether RS and GIS data are supposed to be protected by copyright or not becomes a hot controversy. "Fesit case" raises a big issue for the copyright protection of Database and stimulates a new Database law to be brought up, such as the EC Database Directive. The EC Database Directive seems to find a new solution to resolve the problem between the intellectual property right and the access right of Database. This article makes a brief introduction of the regulation related to Database protection in the United States, European Communities, and Taiwan.
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IGARSS - Legal protection and data access of remote sensing and GIS Database
2007 IEEE International Geoscience and Remote Sensing Symposium, 2007Co-Authors: Yi-ping Chen, Ming-der YangAbstract:Recently, remote sensing data and geographic information system (GIS) have been variously applied to research and industry in the world. Most of cases, the Database of geographic information is a big treasure belonging to a company or a government. However, the digital data set is expensive to generate but easy to copy and propagate. In a private sector, it would be reluctant to invest a great amount of money unless profits can be expected to make. Thus, proper protection is necessary to foster the development of this kind of information industry. This article describes the related laws and regulations of Database protection. According to U.S. Supreme court case, Feist Publications vs. Rural Telephone Service Company, Inc., a Factual compilation is protected only if there is intellectual creativity either in the selection of the facts contained or in their arrangements as presented so that Factual Database would be unprotected by copyright. However, remote sensing and GIS data are computerized and digital versions of maps with added information, functionality, and complexity that provide a further opportunity for original expression. Therefore, whether RS and GIS data are supposed to be protected by copyright or not becomes a hot controversy. "Fesit case" raises a big issue for the copyright protection of Database and stimulates a new Database law to be brought up, such as the EC Database Directive. The EC Database Directive seems to find a new solution to resolve the problem between the intellectual property right and the access right of Database. This article makes a brief introduction of the regulation related to Database protection in the United States, European Communities, and Taiwan.
Erich S Striedl - One of the best experts on this subject based on the ideXlab platform.
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‘B-Base’ — A Structure-Oriented, Numerical, Factual Database for 11B-NMR Spectroscopy and Related Information about Other Nuclei
Chemical Structures 2, 1993Co-Authors: Heinrich Noth, Erich S StriedlAbstract:The structure-oriented, numerical, Factual Database, B-Base, is described as an application of the Database management system ChemBase. The constructive work within the last two years resulted in a Database, B-Base, which at present incorporates approximately 9,400 document units. Today the Database covers primary literature up to the middle of 1988 and will be updated continuously. In general, data concerning boron compounds with 1–4 B atoms of co-ordination number 2–4 are stored. A concept for Lewis adduct compounds has been developed. In addition, this concept has been expanded for metal complexes and cluster compounds. Data fields for dividing B-Base into structure related file segments and for indexing multistructural graphs have been newly added. Evaluation of structure-shift relations by means of ChemBase software and the suitable PlotIT program for statistics resulted in about 60 basic graphs, visualising shift ranges of indicated substructures. These graphs are accessible within the application B-Base by using an alternative form when viewing a document unit.
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b base a structure oriented numerical Factual Database for 11b nmr spectroscopy and related information about other nuclei
1993Co-Authors: Heinrich Noth, Erich S StriedlAbstract:The structure-oriented, numerical, Factual Database, B-Base, is described as an application of the Database management system ChemBase. The constructive work within the last two years resulted in a Database, B-Base, which at present incorporates approximately 9,400 document units. Today the Database covers primary literature up to the middle of 1988 and will be updated continuously. In general, data concerning boron compounds with 1–4 B atoms of co-ordination number 2–4 are stored. A concept for Lewis adduct compounds has been developed. In addition, this concept has been expanded for metal complexes and cluster compounds. Data fields for dividing B-Base into structure related file segments and for indexing multistructural graphs have been newly added. Evaluation of structure-shift relations by means of ChemBase software and the suitable PlotIT program for statistics resulted in about 60 basic graphs, visualising shift ranges of indicated substructures. These graphs are accessible within the application B-Base by using an alternative form when viewing a document unit.
B Roth - One of the best experts on this subject based on the ideXlab platform.
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registration of substances in the gmelin Factual Database
Analytica Chimica Acta, 1992Co-Authors: B Roth, H U Bohmer, R DeplanqueAbstract:Abstract In the early stages of the development of the Gmelin Factual Database it was shown that coordination compounds in inorganic chemistry cannot be limited to coordination numbers up to 4; so a methodology was developed which enables the registration of structures in which the central atom can have a coordination number up to 20 allowing for up to nine separate ligands.
