Table of Contents

1. Executive Summary
2. Introduction
3. Description of the Quality Controlled Gateway in Mathematics
        3.1 Common Quality Controlled Gateways
        3.2 MathGuide and EULER
           3.2.1 Scope Policy
           3.2.2 Quality Criteria
           3.2.3 Collection Management Policy
           3.2.4 Form and Access in the EULER System
 4. Description of the Used Methods/ Work Done
        4.1 Conversion
        4.2 Implementation
        4.3 Update Mechanisms and EULER Exploitation Task
        4.4 Description of the Data Set
5. Analysis and/or Findings
6. Unresolved Points
7. Conclusions
8. Recommendations for Modification and Adaptation of the EULER DC Scheme
9. Acknowledgements, References, Bibliography
A. Annexes
A.1 Statistics for  the Quality Controlled Database
A.2 Mapping MathGuide to EULER
A.3 Examples of Items from the Quality Controlled Gateway
A.4 Formats of MathGuide
Links to External Files
Additions, Changes and Further Developments within the Whole EULER Project
Summary Web Page for the EULER Gateway

1. Executive Summary

2. Introduction

Furthermore this work package is related with the work package 2.5.2, where the documents linked from the sites of the quality controlled information gateway were automatically collected for the integration into the EULER system (for details see Url-2).

For the task to build a quality controlled information gateway the approaches and the results of the Subject Guides project SSG-FI (Url-26; Url-35) were used  for the EULER project.  The Subject Guide project started in June 1996 and were funded by the Deutsche Forschungsgemeinschaft/DFG (Url-8)(see also Url-1, Url-10, Url-12, Url-26, Url-32, Url-33 or see Chapter 9). In this project a special guide for mathematical resources exists - called MathGuide http://www.MathGuide.de/. The approximately 1100 mathematical metadata sets coming from that guide were mapped and converted to the EULER DC scheme (for the mapping see Annex A.2). The metadata sets contain metadata to the bibliographic description, keywords, the MSC codes, and ratings of the content, of the clarity, of the index, of the linking structure, and of the target audience.  Mathematical sites are web pages with references to full text web pages or server sites in the field of mathematics. Details to the scope and the content of the MathGuide data in the context of the EULER project are described in Subchapter 3.2.

Despite the fact that the whole work package 2 is a resource adaptation program new resources were discovered in this work package. The CWI has currently no collection of Internet resources to adapt, so they have only contributed new resources through MathGuide by filling metadata in a MathGuide template or directly in the MathGuide database. The metadata have been completed by the MathGuide Team at SUB.  The main focus for new resources have been the mathematical resources from the European countries.

The description of the database for the quality controlled information gateway until the end of January can be found in Chapter 4.4, and actual information about the database will be occur in an external file and in the description sheet for the EULER service (see Links to external files).

This report was written by the Niedersächsische Staats- und Universitätsbibliothek Göttingen.

3. Description of the Quality Controlled Gateway in Mathematics

        3.1 Common Quality Controlled Gateways

"Information gateways are quality controlled information services that have the following characteristics:

1. an online service that provides links to numerous other sites or documents on the Internet
2. selection of resources in an intellectual process according to published quality and scope criteria (this excludes e.g. selection according to automatically measured popularity)
3. intellectually produced content descriptions, in the spectrum between short annotation and review (this excludes automatically extracted so-called summaries). A good but not necessary criterion is the existence of intellectually assigned keywords or controlled terms.
4. intellectually constructed browsing structure/classification (this excludes completely unstructured lists of links)
5. at least partly, manually generated (bibliographic) metadata for the individual resources

        3.2 MathGuide and EULER

The concept of mathematical sites:
"1. an online service that provides links to numerous other sites or documents on the Internet " (Url-5)
This definition is met by the EULER database/MathGuide by the collection of mathematical sites. Sites are web pages with collections of other full text documents or server sites with mathematical documents. In the EULER project the single documents, which are behind these mathematical sites, have been collected in the work package 2.5.2 (see above, or Url-2).

SSG-FI/MathGuide resources for the EULER service:
As stated in the introduction, the about 1100 metadata sets for quality controlled mathematical Internet resources for the EULER system are coming from the mathematical part of the German SSG-Fachinformationen. On the entry page the mathematical service 'MathGuide' is described as:
"The MathGuide is an Internet-based subject gateway to scholarly relevant information in mathematics, located at the Lower Saxony State- and University Library, Göttingen (Germany). Resources are described and evaluated with a set of Dublin Core metadata." (Url-22).
The integration of the new Internet resources for EULER through MathGuide delivered by the CWI is in progress.

The used metadata scheme:
After the analysis of the functionality of the EULER metadata scheme it turned out that the EULER  metadata set is not sufficient to describe quality ratings (e.g. the rating for the audience group). For the EULER system as a whole it was not necessary to introduce different levels of quality, but this information is useful in the context to assess quality, which has different meanings for different target audiences. As a solution, the SSG-FI/MathGuide metadata - orientated by DC (Url-27)- set has been used as a working metadata set in this work package and has been converted to the EULER DC scheme (details to the SSG-FI metadata set are available at: SSG-FI documentation, 1999, and /or see the important metadata for the EULER system in the conversion table in Subchapter 4.1).

The process of manually filling of metadata:
"2. selection of resources in an intellectual process according to published quality and scope criteria (this excludes e.g. selection according to automatically measured popularity)
3. intellectually produced content descriptions, in the spectrum between short annotation and review (this excludes automatically extracted so-called summaries). A good but not necessary criterion is the existence of intellectually assigned keywords or controlled terms.
[...]
5. at least partly, manually generated (bibliographic) metadata for the individual resources"  (Url-5)
If an Internet resource belongs to the scope, which is described in the Subchapter 3.2.1, there is an assessment, if the resource meets the minimal quality criteria (see Subchapter 3.2.2). Then the resource is described with the SSG-FI/MathGuide metadata set by filling out the detailed metadata template, or by writing directly into the Allegro database of MathGuide.  The metadata were manually entered for the bibliographic part, the subject classification, the description of the resource, the ratings, and for related topics (details at: Url-10, or in the conversion table in Subchapter 4.1):

• Title, Authors, Editors, Publishers, Distributor,  Languages, Country, Formats
• ISBN ISSN
• URL (URL,Mirror(s), Derived from , Contained in, Archived by)
• Formal key(s)
• Classification (MSC, MSC verbal)
• Keywords
• Description
• Date (Date of Publication, Course of Publication, Temporal Coverage)
• Availability (Access, Restrictions, Remarks)
• Evaluation (Relevance: Clarity,  Index , Links, Level)
• Statistics (Size, Backlinks, Notes, Time stamp, Comment)
• Your address (Name,  E-Mail,  Abbreviation of the partner institution)

            3.2.1 Scope Policy

In the following text to the 'scope of the subject gateway' the EULER scope policy is described by the scope criteria of the DESIRE handbook (Url-5):

INFORMATION COVERAGE

• subject matter

• acceptable types of resources

• acceptable sources

•                                    INFORMATION PROVIDERS/SERVERS
                                   Libraries
                                   Archives
                                   Museums
                                   University Departments
                                   Research Institutes
                                   Organizations and Societies
                                   Official Governmental Server
                                   Commercial Provider
                                   Communication Forums
                                   Other
 
•                                    FACTUAL REFERENCE WORKS
                                   Encyclopaedia and Biographic Lexika
                                   Dictionaries, Thesauri
                                   Lists of Abbreviations
                                   Gazetteers
                                   Addresses and Personnel Directories
                                   Data Collections
                                   Compendiums of Laws
                                   Norms and Standards
                                   Manuals
                                   (Current) Research Projects
                                   Other
 
•                                    BIBLIOGRAPHIC SOURCES
                                   Virtual Libraries
                                   Special Subject Virtual Libraries
                                   Current Bibliographic and Abstracting Series
                                   Completed Bibliographies of Special Subjects
                                   Bibliographies by Specific Document Type
                                        Lists of Periodicals/Journals
                                        Lists of Conference Proceedings
                                        Lists of Government Reports
                                        Lists of Research Reports
                                        Lists of Theses and Dissertations
                                        Lists of Map Collections
                                        Lists of Standard Specifications
                                        Lists of Translation Indexes
                                        Other
                                   Subject-Specific Library Catalogues
                                   Other
 
•                                    PRIMARY INFORMATION SOURCES
                                   Teaching Materials
                                   Handbooks
                                   Journals
                                   Series of Preprints, Reports, and Working Papers
                                   Congresses
                                   Source Materials
                                   Maps
                                   (Collections of) Pictures, Photos
                                   Moving Pictures
                                   Virtual Exhibitions
                                   Software and Expert Systems
                                   Other
 
• acceptable levels of difficulty

popular
popular; undergraduate
popular; undergraduate; graduate
popular; undergraduate; graduate; professional
undergraduate; graduate
undergraduate; graduate; professional
graduate; professional
professional

• advertising

ACCESS

• costs

• technology

• registration

• special needs

METADATA AND CATALOGUING ISSUES

• granularity

• resource description

GEOGRAPHICAL ISSUES

• geographical restraints

• language

            3.2.2 Quality Criteria

For more detailed information to quality criteria in MathGuide see Url-10. The usage of the several quality criteria will lead to ratings from * to *** in MathGuide/EULER, if the resource is worthwhile to be integrated into the Guide, which means that scientific relevant information has been found (see Url-10, p.22). For the described Internet resources in MathGuide/EULER this means they all have quality in regard to their mathematical content.
To give an impression to the user about the target audience, the layout, the linking structure, the number referring documents and the relevance on the Internet rating are given, which are part of the detailed quality criteria (see Url-10, p.22). The meaning of the ratings depends on the categories which should be rated, so there is no easy translation what the symbols * to *** mean. The different definitions of the quality ratings  and their representation in the EULER system are described in the following text.

1. content quality criteria
"Content criteria: evaluating the information

• validity
• authority and reputation of source
• accuracy
• comprehensiveness
• uniqueness
• composition and organisation
• currency, adequacy of maintenance " Url-5

• scope
• authority
• validity
• accuracy
• currency
• and level (see Url-10, p.74).

3.  process quality criteria
"Process criteria: evaluating the system

• information integrity (work of the information provider)
• site integrity (work of the Webmaster/site manager)

system integrity (work of the systems administrator)" Url-5

4. form quality criteria
"Form criteria: evaluating the medium

• ease of navigation
• provision of user support
• use of recognised standards
• appropriate use of technology
• aesthetics " Url-5

For the definition of clarity in MathGuide/EULER the following clues are given:

• openess/clarity (colours, types)
• no super-abundance of images or technical features (Java applets, scripts)
• suitability for different browsers - also for text oriented ones, existence of ALT tags etc.
• and the usage of Java in a justifiable manner (see Url-10, p.75)

3. further quality criteria for the MathGuide/EULER database
Besides the mentioned quality criteria in the subject gateway definition of the DESIRE project further quality criteria are used for the EULER quality controlled Internet resources: Links and the number of referring documents, Backlinks as citation rate and Level to assess the target audience (from popular, undergraduate, graduate,  to professional).

Links

short MathGuide* rating	short EULER rating in  the description field	questions for the evaluators -definition and meaning of the rating (see  Url-10, p.77)
***/links	[QUALITY] of links: excellent	many structured and/or annotated links
**/links	[QUALITY] of links: good	some structured and/or annotated links
*/links	[QUALITY] of links: fair	less links and not annotated links
empty field entry /links	no entry	'-'/no hyper links

For the links rating in MathGuide the following clues are given:

• number of references
• 'grade' of the mentioned resources
• existence of annotations
• order (sensible structuring)
• and actuality (functionality of the references); see Url-10, p.77.

Backlinks

short MathGuide* rating	short EULER rating in  the description field	questions for the evaluators -definition and meaning of the rating (see  Url-10, p.78)
[number]/backlinks	[QUALITY] numbers of backlinks: [number]	The idea behind the concept of the backlinks is a form of a citation index on the Internet. This values is measure by an advanced search at Altavista;  search with: link:www.sub.uni-goettingen.de/ssgfi AND NOT host:www.sub.uni-goettingen.de

Level

short MathGuide* rating	short EULER rating in  the description field	questions for the evaluators -definition and meaning of the rating (see  Url-10, p.32)
popular  popular; undergraduate  popular; undergraduate; graduate  popular; undergraduate; graduate; professional  undergraduate; graduate  undergraduate; graduate; professional  graduate; professional  professional	evaluation of level: popular  evaluation of level: popular; undergraduate  evaluation of level: popular; undergraduate; graduate  evaluation of level: popular; undergraduate; graduate; professional  evaluation of level: undergraduate; graduate  evaluation of level: undergraduate; graduate; professional  evaluation of level: graduate; professional  evaluation of level: professional	popular: popular science, that means understandable without  previous knowledge undergraduate: with scientific intention, but on a undergraduate level  graduate:  with scientific intention on a graduate level  professional: fit for subject scientists

 

             3.2.3 Collection Management Policy

The collection management policy between the partners CWI and the Niedersächsische Staats- und Universitätsbibliothek Göttingen is more important for the EULER project context. It is planned to divide the resource discovery by geographic and by languages areas in the future.

From the German Project Math-Net about 1000 mathematical resources - called  'MathNet Links to the Mathematical World' (see Url-23) - are tested with the quality criteria, get supplemented with more metadata and will be integrated by CWI and SUB Göttingen in MathGuide for the EULER system. Resources which fulfill the quality criteria, but are no server sites, will get a tested smaller metadata set than normally used in MathGuide.

All users of the EULER system should get the possibility to report and announce mathematical sites and pages for the quality controlled information gateway. In Chapter 7 a template is recommended for this purpose.

            3.2.4 Form and Access in the EULER System

The searchable and browsable structure depends on the selection of browsable and searchable metadata in the EULER system, so no further information is given here.
The description, and the evaluation/ratings to a server site are searchable in the EULER description field with the term QUALITY at the beginning and with the following schematic entries:

• of scope/depth:
• of indexing/structure:
• of clarity/layout:
• of links:
• of level:
• number of backlinks:
• numbers of entries: (see examples in Annex A.3 and for the definitions see Subchapter 3.2.2).

4. Description of the Used Methods/ Work Done

        4.1 Conversion

1. extracting of the mathematical part of the SSG-FI data
2. downloading from the Allegro database with the character set ISO 8859-1
3. making a exclusion of organizational reference sets, test sets, and sets with obsolete links
4. converting from MathGuide to the EULER format
5. using of the EULER ISO tool
6. indexing of the file and offering the database (Z39.50/Zebra server)

         4.2 Implementation

        4.3 Update Mechanisms and EULER Exploitation Task

Within the EULER exploitation task the Niedersächsische Staats- und Universitätsbibliothek will make experiments to offer the data to the EULER system by another Z39.50 server other than the used zebra server. It is planned to do this through the Z39.50 functionality of the Allegro server. This will be another update mechanism without additional work. Results to this work will go into the external Annex.

        4.4 Description of the Data Set

description of the database:
The data export from February 3, 2000 contains the 1106 metadata sets. The Niedersächsische Staats- und Universitätsbibliothek Göttingen fulfilled the promised number of records of the EULER contract. At the EULER project meeting in January 2000 is was decided by the EULER partners that the CWI will do further work on this work package.  The results will go into the the additional annex (see Additions, Changes and Further Developments within the Whole EULER Project / Description of the Final Data Set ).

Details of the occurrences of metadata elements can be found in the statistical Annex A.1.

To describe the content of the database the following figures show some aspects:

Figure 1: Distribution of MSC codes (ordered after MSC code sequence; N=1288; high amount for MSC 00-XX because of the usage as pseudo code).
 

 Figure 2: Distribution of languages of the documents behind the server sites (ISO 639 code; N=1040)

Figure 3: Distribution of country codes in the URL entries of the mathematical sites (ordered alphabetically; N=955)
 
 

   5. Analysis and/or Findings

Some problems in the MathGuide data got visible (e.g. in the publisher field, where the country is not always clear; in rare cases the scheme Family Name First is wrong; the TY entry is only similar to the MINE types see Annex A.4), and also weak points in the EULER metadata set were recognized (see Chapter 8).

The result representation of the information of the quality controlled information gateway look strange at the existing EULER system and the evaluated system (this was also an outcome of the evaluation in WP3.3).  For instance:

Language                        deen
Description                        QUALITY of scope/depth: excellent; of clarity/layout: good; of indexing/strucure: excellent; of links: good; of level: graduate - professional; numbers of backlinks: 100This is the  home page [...]
Record source                        Niedersächsische Staats- und Universitätsbibliothek Göttingen/MathGuide: 000566

Almost all resources of the quality controlled Internet resources are double in the EULER system. The EULER partners decided to let only the quality controlled resources in the EULER system and to remove the records from the none quality web index of WP2.5.2.

The EULER de-duplication mechanism for all the Internet resources - inclusive of the none quality controlled Internet resources - works not well in all expected cases (for the used de-duplication mechanism in EULER see Url-19). Different resources were added to the quality controlled metadata in the short result representation which are not describing the same resource [For instance, searching for any=hotel inf* gives 4 links for the title Welcome to the Hotel Infinity! (SUB, NetLab, NetLab, NetLab). Two URLs are identical (see the paragraph before). The two other URLs lead to two new resources with the same title tag. In this case the information is not completely wrong because MathGuide is describing the whole server site.]. The reasons for the wrong de-duplication are a same/ or a similar title, missing metadata which were used to build up the EULER de-duplication key, and that no parts of the URL are used for the de-duplication key.

For the conclusions see Chapter 7 and for the recommendation to the changes in the EULER DC see Chapter 8.
 

6. Unresolved Points

7. Conclusions

• to use a different metadata set than the EULER one, which is more adapted to the topic of different levels of quality (especially for different target audiences)
• to make co-operative work in one database to avoid double work (URL check etc.)
• an URL check would be useful for the comparison with the data -created in WP2.5.2-  (with the used EULER schemes this is not possible to realize)
• for a better de-duplication of Internet resources an URL check should be done or parts of the URL ending should be integrated into the de-duplication key (this is not possible to realize with the used EULER schemes)
• The direct access to the Göttingen database should be used when new partners want to cooperate with a huge amount of data.
• The following template for the EULER user for the announcement of server sites and Internet pages for the integration into the quality controlled gateway should be used:

Figure 1: Snapshot of the recommended user template for the announcement of mathematical server sites and pages for the quality controlled information gateway (test version at: http://harvest.sub.uni-goettingen.de/euler/project/basic.html).
 
 

8. Recommendations for Modification and Adaptation of the EULER DC Scheme

Marc relators
In the DC Qualifier description (version 1.0; Url-18) there is the MARC Code list for Relator (Url-21) recommended as vocabulary for the agentRoles. In the DC library group a short list was developed for the usage of MARC relators in DC (proposal Url-13; list for usage: Url-14). Examples in this list are: Distributor dst, Editor edt, Publisher pbl, or Sponsor spn. For the standardization and for the adaptation to the usage in DC community it is recommended to reduce the roles to the ones in this list and to drop out the other. This would make the roles searchable and understandable for the user.

quality metadata
In the DC working groups DC-Subdesc and the DC-education there were discussions about metadata to the quality and the audience of the resource until the end of 1999. It was suggested to the qualifier audience to adopt the following definition to DC.Description:

'Name:Audience
Definition: An identification of the intended user group or level of the resource
Comment: The intended user or level of the resource should be derived from a controlled vocabulary scheme wherver possible and this scheme should always be identified as a value qualifier'.Url-16

1. Users (6):
• Grade, age, academic/vocational/training "level"
• Administrators of the resource
• Student "audience" ("target group," "learning context," "beneficiary")
2. [...]
3. Quality (3):
• Unstructured assessments (e.g., third-party reviews/annotations)

Structured assessments (assessment based on established evaluative criteria)'  Url-4.

• 'Intelligence/ability
• Physical/emotional characteristics
• Socio-economic status
• Cultural/linguistic groups
• Education level
• Grade level
• Age level (age and age range)
• Gender' (Url-41)

Publisher field
The scheme of EULER PU field cannot be filled easily for the Internet resources. Most providers and publishers of the Internet resources are not publishers in the common sense of the other resources in the EULER system as publishing houses. And very often it is not clear if the insitution/person is responsible for the content by writing, by editing, or by providing the information. And the city and the country of the publisher's activity are often unknown. So it is recommended for the future to use the DC.Publisher field for the Internet resources without the scheme composed of publication city, country and publisher name, if there were to be more Internet resources. Now - within the MathGuide project the city and the country are filled and could be converted to the EULER PU scheme.

9. Acknowledgements, References, Bibliography

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Url-2: Anna Brümmer, Johanna Nielsson, Lars Nodden and Thomas Schönthal: Evaluation of methods for automatic data collection. EULER D252 Version 0.1 http://www.ub.lu.se/EULER/partners/index-analys.html Last visited: 18.8.99. The end version will be public from : http://www.emis.de/projects/EULER/Reports/index.html.

Url-3: DC-Education: Project Element Sets: Qualifiers, Extension Elements, & Semantics. http://www.ischool.washington.edu/sasutton/DC-Education.html Updated: 10/17/1999. Last visited: 07.02.2000.

Url-4: DC7-Education: Report of the DC-Education Working Group's DC7 Sessions: Tuesday, October 26 & Wednesday, October 27. http://www.ischool.washington.edu/sasutton/DC7_DCEd.html Updated: 5 November 1999. Last visited: 07.02.2000.

Url-5: DESIRE Project Team: [DESIRE] Information Gateways Handbook (Print Version). http://www.desire.org/handbook/print4.html Last updated: 10 November 99. Last visited: 21.12.99

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Url-9: EdNA: Analysis of 10 Metadata Projects with Particular Reference to Educational/Pedagogical Elements. http://www.edna.edu.au/EdNA/showpage.html?file=%2Fedna%2Faboutedna%2Fmetadata%2Fanalysis%2Findex.htm&sp=eec103eeeeeb Updated 20 October 1999. Last visited: 07.02.2000.

Url-10: Wilfried Enderle (Ed.): Das Sondersammelgebiets-Fachinformationsprojekt (SSG-FI) der Niedersächsischen Staats- und Universitätsbibliothek Göttingen : GeoGuide, MathGuide, Anglo-American History Guide und Anglo-American Literature Guide (www.SUB.Uni-Goettingen.de/ssgfi/).  Dokumentation. Teil 1 (Schriften der Deutschen Forschungsgemeinschaft) 1999. (dbi-materialien, Bd. 185) Berlin: Deutsches Bibliotheksinstitut, 1999. 158 S., (ISBN 3-87068-985-4). Or online: http://www.Geo-Guide.de/info/public/ssgfi.pdf. (Planned: Part 2.)

Url-11: EULER project: Alpha version of the EULER service. http://euler.lub.lu.se/euler/engine/engine.html Last visited: March 31, 2000.

Url-12: Thomas Fischer: Das SSG-FI-System: Eine einheitliche Beschreibung wissenschaftlicher Informationen. http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/allegro.html Last update: May 13, 1998. Last visited: 18.8.99.

Url-13: Rebecca S. Guenther (email 24.1.2000): Subject: MARC/DC relators. http://www.mailbase.ac.uk/lists/dc-libraries/2000-01/0001.html Last visited: 9.3.2000.

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Url-15: Rachel Heery: DC Subdesc Working Group Proposed Subject, Description and Language Qualifiers. Status: Working Group proposal. http://www.mailbase.ac.uk/lists/dc-subdesc/files/dcsubdesc-final.html Date: 1999-12-20.  Last visited: 04.02.2000.

Url-16: Rachel Heery: [DC Subdesc-draft, 1999]: DC Working Draft - 14 November 1999. http://www.mailbase.ac.uk/lists/dc-subdesc/files/wd-subdesc-qual.htm Last updated 1999-11-15. Last visited: 04.02.2000.

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Url-18 : Renato Iannella and Eric Miller (Editors): Dublin Core Metadata Element Set Qualifiers 1.0. DCMI Working Draft - 22 December 1999.  http://www.mailbase.ac.uk/lists/dc-usage/files/wd-dcq-10.html Last visited: 07.02.2000.

Url-19: Michael Jost: Resource Adaptation in EULER Version 0.1 (work-in-progress) http://www.emis.de/MATH/EULER/Deliverables/W2.html Last update: 22.6.99. Last visited: 25.10.99. The end version will be public from: http://www.emis.de/projects/EULER/Reports/index.html.

Url-20: John Kirriemuir: [ROADS, 1999]: What is ROADS? http://www.ukoln.ac.uk/metadata/roads/what/ Last visited: 6.4.2000.

Url-21: Library of Congress: USMARC Code List: RELATOR CODES -- Term Sequence. http://www.loc.gov/marc/relators/re9802r1.html Date: 04/29/98. Last visited: 07.02.2000.

Url-22: MathGuide/ SUB Göttingen: MathGuide. http://www.MathGuide.de/ Last update: 2000. Last visited: 02.02.2000.

Url-23: Math-Net: Math-Net Links to the mathematical world. http://www.math-net.de/links/show?collection=math Last visited: 5.04.2000

Url-24: Metaform/ SUB GöttingenSSG-FI. Mapping SSG-FI and  Dublin Core. http://db1-www.sub.uni-goettingen.de/servlets/metaformList?Table=SSGFIDC&Head=SSG-FI (Stand: 9.6.1998.) Last update: 25.10.99. Last visited: 25.10.99.

Url-25: Diann Rusch-Feja (email September 29, 1999): "Audience" qualifier to DC.Subject / DC.Description. Archived email. http://www.mailbase.ac.uk/lists/dc-subdesc/1999-09/0015.html Mail Date: Wed 29 Sep 1999. Last visited: 04.02.2000.

Url-26: SSG-FI/ SUB Göttingen: About SSG-FI. http://www.sub.uni-goettingen.de/ssgfi/projekt/index.html Last update: 06/04/99. Last visited: 18.8.99.

Url-27: SSG-FI/ SUB Göttingen: [SSG-FI DC, 1998]: Dublin Core Metadaten. http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/dublincore.html Last update: May 14, 1998. Last visited: 18.8.99.

Url-28: SSG-FI/ SUB Göttingen
[SSG-FI Formal Key, 1998]: Formal Key. http://www.MathGuide.de/cgi-bin/ssgfi/navigator.pl?db=math&type=form Last visited: 6.4.2000.

Url-29: SSG-FI/ SUB Göttingen: Die Kategorien des SSG-FI-Systems. http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/ssgfikategorien.html Last update: May 14, 1998. Last visited: 18.8.99.

Url-30: SSG-FI/ SUB Göttingen:Ländercodes nach ISO 3166. http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/landcode.html Last update: [1999]. Last visited: 18.8.99.

Url-31:  SSG-FI/ SUB Göttingen: SSG-FI Metadata Concept (Template). http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/templ-en.html Last update: Apr 28, 1999. Last visited: 18.8.99.

Url-32: SSG-FI/ SUB Göttingen: Neue Suchmöglichkeiten im Internet: Die SSG-FI-Guides der Niedersächsischen Staats- und Universitätsbibliothek Göttingen. (Pressemitteilung)
http://www.sub.uni-goettingen.de/ssgfi/projekt/Pressemitteilung.html Last update: 06/01/99. Last visited: 18.8.99.

Url-33: SSG-FI/ SUB Göttingen: Publikationen und Präsentationen des SondersammelGebiets-FachInformations- (SSG-FI) Projektes der Niedersächsischen Staats- und Universitätsbibliothek Göttingen. http://www.sub.uni-goettingen.de/ssgfi/projekt/present/index.html Last update: 06/01/99. Last visited: 18.8.99.

Url-34: SSG-FI/ SUB Göttingen: Source Type Catalog. http://www.sub.uni-goettingen.de/ssgfi/math/formalkey_en.html; http://www.MathGuide.de/cgi-bin/ssgfi/navigator.pl?db=math&type=form Last visited: 14.2.2000.

Url-35: SSG-FI/ SUB Göttingen: Special Subject Guides /  SSG-Fachinformation (SSG-FI). http://www.sub.uni-goettingen.de/ssgfi/index.html Last update: Apr 01, 1999. Last visited: 18.8.99.

Url-36: SSG-FI, SUB Göttingen: Sprachcodes nach ISO 639-1. http://www.sub.uni-goettingen.de/ssgfi/projekt/doku/sprachcode.html Last update: [1999]. Last visited: 18.8.99.

Url-37: SSG-FI/MathGuide, SUB Göttingen: Subject Catalog. http://www.sub.uni-goettingen.de/ssgfi/math/frame_subject_en.html; http://www.MathGuide.de/cgi-bin/ssgfi/navigator.pl?db=math&type=subj Last visited: 14.2.2000.

Url-38: SUB Göttingen: Annex A.4 to D251.Additional page to D251.http://harvest.sub.uni-goettingen.de/euler/additionsD251.html Last update: 07.04.2000. Last visited: 7.4.2000.

Url-39: SUB Göttingen:I2 EULER Internet Resources: Quality Controlled Information Gateway at SUB Göttingen.http://harvest.sub.uni-goettingen.de/euler/project/eulersheetI2.html Last update: 31.03.2000. Last visited: 7.4.2000.

Url-40: SUB Göttingen: Sammelschwerpunkt Reine Mathematik (17.1) . WEBIS - Reine Mathematik - Sammelauftrag. http://webis.sub.uni-hamburg.de/cgi-bin/ssg?file=bib.7/ssg.17_1/wwwforms/sammel.html Last update: [1999]. Last visited: 18.8.99.

Url-41: Stuart A. Sutton (Editor): Category: "Audience".DC-Education Working Document-January 24, 2000. http://www.ischool.washington.edu/sasutton/dc-ed/Audience_SS_1.html Last visited: 07.02.2000.
 

A. Annexes

A.1 Statistics for the Quality Controlled Database

A.2 Mapping MathGuide to EULER

Mappings for the Source Types of MathGuide
For more information about the Mathguide formal key see Url-28:

Source Type	Key	Description/ Examples	EULER TY field content of  the fields
Servers/Information Providers
Libraries	lb	only subject-specific libraries to be included	Text.Homepage
Archives	ar		Text.Homepage
Museums	mu		Text.Homepage
University Departments	sf1	homepages or points of entry	Text.Homepage
Research Institutes	sf2	Research institutes, university affiliated or not (e.g. think tanks)	Text.Homepage
Organizations and Societies	so1	Academic associations	Text.Homepage
Official Governmental Server	so2	International, national, regional, local	Text.Homepage
Commercial Provider	sc	Publishers, companies	Text.Homepage
Communication Forums	dg	Discussion groups, news groups, news lists, mailing lists	Text.Homepage
Private	ph	Private homepages.	Text.Homepage
Other Servers/ Information Providers	etc-info	Etc.	Text.Homepage
Factual Reference Works
Encyclopedia and Biographic Lexicons	ej		Text.x-Reference
Dictionaries, Thesauri	we		Text.x-Reference
Lists of Abbreviations	ak		Text.x-Reference
Gazetteers	oe	Directories of (historic) places	Text.x-Reference
Addresses and Personnel Directories	ay	Address lists, member lists, etc.	Text.x-Reference
Data Collections	d6	Hard data, primary data bases, statistics	Text.x-Reference
Compendiums of Laws	gs	Legal provisions (not including collections of natural, physical, etc. laws)	Text.x-Reference
Norms and Standards	tm	Normative documents (ISO/DIN standards), etc.	Text.x-Reference
Manuals	a2	explanatory and didactic manuals, e.g. for technical writing, presentation methods, etc.	Text.x-Reference
(Current) Research Projects	fp	Lists of research projects or large projects	Text.x-Reference
Other Factual Reference Work	etc-fact		Text.x-Reference
Bibliographic Sources
Reference Books and Virtual Libraries	ff		Text.x-Bibliography
Special Subject Virtual Libraries	is		Text.x-Bibliography
Current Bibliographic and Abstracting Series	blz6	Major or continuously maintained/renewed/updated bibliographic series, including review and abstract series	Text.x-Bibliography
Completed Bibliographies of Special Subjects	bl	Special Subject Bibliographies which are not continuously maintained and/or updated	Text.x-Bibliography
Bibliographies by Specific Document Type		Lists with links to providers of various document types (see below)	Text.x-Bibliography
Lists of Periodicals/Journals	vcz6		Text.x-Bibliography
Lists of Conference Proceedings	vckn		Text.x-Bibliography
Lists of Government Reports	vcbd		Text.x-Bibliography
Lists of Research Reports	vcfd		Text.x-Bibliography
Lists of Theses and Dissertations	vcho		Text.x-Bibliography
Lists of Map Collections	vcka		Text.x-Bibliography
Lists of Standard Specifications	vctm		Text.x-Bibliography
Lists of Translation Indexes	vcue		Text.x-Bibliography
Other Lists of Specific Document Types	vcan	Software Directories, etc.	Text.x-Bibliography
Subject-Specific Library Catalogs	kb	Special subject collections, recent acquisitions, etc.	Text.x-Bibliography
Other Bibliographic Sources	etc-bib		Text.x-Bibliography
Primary Information Sources
Teaching Materials	le	Textbooks, lecture notes, introductions, etc.	Text.x-LectureNotes
Handbooks	hb	(not to be confused with "real" encyclopedia	Text.Reference
Journals	z6	Journals and electronic journals	Text.Serial
Journals with Full Articles Available	z61		Text.Serial
Journals with Selected Articles Available	z62		Text.Serial
Journals with Abstracts only	z63		Text.Serial
Journals with Table of Contents only	z64		Text.Serial
Journals in Early Development Stage	z65		Text.Serial
Series of Preprints, Reports, and Working Papers	fd	Links to series of documents, not to the individual documents themselves	Text.Serial
Congresses	kn	(Proceedings from) congresses , conferences, symposia, annual meetings, or their respective homepages	Text.Proceedings
Source Materials	q6		Software.Source
Primary Source Materials	q61		Software.Source
Secondary Source Materials	q62		Software.Source
Maps	ka	Map collections or important single maps	Image
(Collections of) Pictures, Photos	bb		Image
Moving Pictures	mp	Moving pictures, animations, videos, films	Image.Moving.Film
Virtual Exhibitions	at		Image.Moving.Film
Software and Expert Systems	do	subject-specific software (downloadable or for online-use)	Software
Other Primary Information Sources	etc-prim		Text.x-Separatum

Details to TY for	MathGuide
Text.Abstract	not in the MathGuide data
Text.Article	not in the MathGuide data
Text.Homepage	lb  ar  mu  sf1  sf2  so1  so2  sc  dg  ph etc-info
Text.Monograph	not in the MathGuide data
Text.Preprint	not in the MathGuide data
Text.Proceedings	kn
Text.x-Reference	ej  we  ak  oe  ay  d6  gs  tm  a2  fp  etc-fact  hb
Text.Serial	z6  z61  z62  z63  z64  z65  fd
Text.TechReport	not in the MathGuide data
Text.Thesis	not in the MathGuide data
Image	ka  bb
Image.Moving.Film	mp  at
Software	do
Software.Executable	not in the MathGuide data
Software.Source	q6  q61  q62
Data.Numeric	not in the MathGuide data  Data are not especially selected in MathGuide. MathGuide 'data' material is part of EULER Text.Reference.
EULER Specific Types:	-
Text.x-Separatum (Separatum)	etc-prim
Text.x-Patentspec (Patent Specification)	not in the MathGuide data
Text.x-Bibliography	ff  is  blz6  bl  vcz6  vckn  vcbd  vcfd  vcho  vcka  vctm  vcue  vcan  kb  etc-bib
Text.x-LectureNotes	le
Text.x-Review	not in the MathGuide data

A.3 Examples of Items from the Quality Controlled Gateway

<META NAME="DC.Title" CONTENT="Theory and Applications of Categories (TAC) - Electronic journal">
<META NAME="DC.Creator" CONTENT="[Managing Editor] Rosebrugh, Robert &lt;rrosebrugh@mta.ca&gt;
(Mount Allison University, USA)">
<META NAME="DC.Publisher" CONTENT="Mount Allison University, Sackville, New Brunswick, Canada">
<META NAME="DC.Publisher" CONTENT="Mount Allison University; Sackville; New Brunswick; Canada">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Category theory">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="homological algebra">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Algebraic geometry">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="geometry">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="algebraic topology">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="18-XX">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="14-XX">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="51-XX">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="55-XX">
<META NAME="DC.Subject" CONTENT="Theory and Applications of Categories, categorical algebra,
category theory, higher dimensional categories, algebra, geometry, topology, computer science, physics, TAC">
<META NAME="DC.Description" CONTENT="Theory and Applications of Categories is the all-electronic,
refereed journal on Category Theory, categorical methods and their applications in the mathematical sciences.">
<META NAME="DC.Type" CONTENT="WWW">
<META NAME="DC.Date" CONTENT="1999-05-31">
<META NAME="DC.Format" CONTENT="text/html">
<META NAME="DC.Format" CONTENT="dvi">
<META NAME="DC.Format" CONTENT="ps">
<META NAME="DC.Language" CONTENT="en">
<META NAME="DC.Identifier" CONTENT="http://www.tac.mta.ca/tac/">
<META NAME="DC.Identifier" SCHEME="ISSNISBN" CONTENT="1201 - 561X">
<META NAME="DC.Relation" SCHEME="URL" CONTENT="http://www.emis.de/journals/TAC/">
<META NAME="DC.Relation" SCHEME="URL" CONTENT="ftp://camel.math.ca/mirror/tac/html/index.html">
<META NAME="DC.Coverage.t.min" CONTENT="1995">
<META NAME="DC.Rights.Access" CONTENT="free">
<META NAME="DC.Rights.Remarks" CONTENT="Subscribers to the journal receive abstracts of accepted papers
by electronic mail. The journal is free to individuals. University Departments, Libraries, and other institutional
subscribers are invited to consult with the Managing Editor about subscription and archiving.">
<META NAME="SSG.TimeStamp" CONTENT="1999-06-03">
<META NAME="SSG.Country" CONTENT="CA">
<META NAME="SSG.Formal" CONTENT="z6">
<META NAME="SSG.Course" CONTENT="one volume per year">
<META NAME="SSG.Evaluation.Contents" CONTENT="***">
<META NAME="SSG.Evaluation.Clarity" CONTENT="**">
<META NAME="SSG.Evaluation.Index" CONTENT="**">
<META NAME="SSG.Evaluation.Links" CONTENT="***">
<META NAME="SSG.Evaluation.Level" CONTENT="professional">
<META NAME="SSG.Size" CONTENT="48 articles till 19990701">
<META NAME="SSG.Backlinks" CONTENT="110">

00 000473
10 Theory and Applications of Categories (TAC) - Electronic journal
12 [Managing Editor] Rosebrugh, Robert <rrosebrugh@mta.ca> (Mount Allison
University, USA)
13 Mount Allison University, Sackville, New Brunswick, Canada
14 Mount Allison University; Sackville; New Brunswick; Canada
15 on
16 en
17 CA
18 text/html; dvi; ps
19 Theory and Applications of Categories; categorical algebra;
category theory; higher dimensional categories; algebra; geometry;
topology; computer science; physics; TAC
20 Theory and Applications of Categories is the all-electronic, refereed
journal on Category Theory, categorical methods and their applications
in the mathematical sciences.
21 http://www.tac.mta.ca/tac/
23 1201 - 561X
25 ftp://camel.math.ca/mirror/tac/html/index.html;
http://www.emis.de/journals/TAC/
29 z6
40 Category theory; homological algebra; Algebraic geometry; geometry;
algebraic topology
41 18-XX; 14-XX; 51-XX; 55-XX
43 31.27
50 19990531
51 one volume per year
52 1995-
60 free
62 Subscribers to the journal receive abstracts of accepted papers by
electronic mail. The journal is free to individuals. University
Departments, Libraries, and other institutional subscribers are invited
to consult with the Managing Editor about subscription and archiving.
70 ***
71 **
72 **
73 ***
74 professional
80 48 articles till 19990701
82 110
91 19990603
92 RV
94 prak
99 000290
99e19991221

<XREC>
<COC>Mount Allison University, Sackville, New Brunswick,
Canada (dst)</COC>
<COP>Rosebrugh, Robert (edt)</COP>
<DA>1999-05-31</DA>
<DE>QUALITY of scope/depth: excellent; of clarity/layout:
good; of indexing/strucure: good; of links: excellent; of
level: professional; numbers of entries: 48 articles till
19990701; numbers of backlinks: 110</DE>
<DE>Theory and Applications of Categories is the
all-electronic, refereed journal on Category Theory,
categorical methods and their applications in the
mathematical sciences.</DE>
<DID>Date coverage: 1995-</DID>
<DMC>19990603</DMC>
<FO>dvi</FO>
<FO>ps</FO>
<FO>text/html</FO>
<FOP>internet</FOP>
<IDL>ftp://camel.math.ca/mirror/tac/html/index.html</IDL>
<IDL>http://www.tac.mta.ca/tac/</IDL>
<IDS>1201-561X</IDS>
<LA>en</LA>
<OI>http://www.MathGuide.de/cgi-bin/ssgfi/anzeige.pl?
db=math&nr=000473&ew=SSGFI</OI>
<PU>(ca) : Mount Allison University, Sackville, New
Brunswick, Canada</PU>
<RC>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide-Team</RC>
<RS>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide: 000473</RS>
<SU>TAC</SU>
<SU>Theory and Applications of Categories</SU>
<SU>algebra</SU>
<SU>categorical algebra</SU>
<SU>category theory</SU>
<SU>computer science</SU>
<SU>geometry</SU>
<SU>higher dimensional categories</SU>
<SU>physics</SU>
<SU>topology</SU>
<SUM>14-XX</SUM>
<SUM>18-XX</SUM>
<SUM>51-XX</SUM>
<SUM>55-XX</SUM>
<TC>access: free</TC>
<TI>Theory and Applications of Categories (TAC) -
Electronic journal</TI>
<TY>Text.Serial</TY>
</XREC>

<META NAME="DC.Title" CONTENT="Algebraic Number Theory Archives">
<META NAME="DC.Publisher" CONTENT="University of Illinois at Urbana-Champaign,
Department of Mathematics, Urbana, IL, USA">
<META NAME="DC.Publisher" CONTENT="University of Illinois at Urbana-Champaign;
Department of Mathematics; Urbana; IL; USA">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="algebraic number theory">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="11Rxx">
<META NAME="DC.Subject" CONTENT="algebraic number theory, preprints, number theory">
<META NAME="DC.Description" CONTENT="Preprints in the field of Algebraic Number Theory">
<META NAME="DC.Type" CONTENT="WWW">
<META NAME="DC.Date" CONTENT="1999-05-28">
<META NAME="DC.Format" CONTENT="text/html">
<META NAME="DC.Format" CONTENT="dvi">
<META NAME="DC.Language" CONTENT="en">
<META NAME="DC.Identifier" CONTENT="http://www.math.uiuc.edu/Algebraic-Number-Theory/">
<META NAME="DC.Relation" SCHEME="URL" CONTENT="http://www.dpmms.cam.ac.uk/
Algebraic-Number-Theory/">
<META NAME="DC.Coverage.t.min" CONTENT="1994">
<META NAME="DC.Rights.Access" CONTENT="free">
<META NAME="DC.Rights.Restriction" CONTENT="none">
<META NAME="SSG.TimeStamp" CONTENT="1999-06-03">
<META NAME="SSG.Country" CONTENT="US (IL)">
<META NAME="SSG.Formal" CONTENT="fd">
<META NAME="SSG.Evaluation.Contents" CONTENT="***">
<META NAME="SSG.Evaluation.Clarity" CONTENT="***">
<META NAME="SSG.Evaluation.Index" CONTENT="***">
<META NAME="SSG.Evaluation.Links" CONTENT="**">
<META NAME="SSG.Evaluation.Level" CONTENT="professional">
<META NAME="SSG.Size" CONTENT="183 documents">
<META NAME="SSG.Backlinks" CONTENT="Main site: about 375; mirror site in UK: about 10">
<META NAME="SSG.Notes" CONTENT="Subscribers of the free mailing list receive
announcements of preprints when they are deposited in the archives. Additionally there is a search
service which allows you to search an index of on-line mathematical works for key words. The index
includes the preprints of this site automatically.">

00 000480
10 Algebraic Number Theory Archives
13 University of Illinois at Urbana-Champaign, Department of Mathematics, Urbana, IL,
USA
14 University of Illinois at Urbana-Champaign; Department of Mathematics; Urbana; IL;
USA
15 on
16 en
17 US (IL)
18 text/html; dvi
19 algebraic number theory; preprints; number theory
20 Preprints in the field of Algebraic Number Theory
21 http://www.math.uiuc.edu/Algebraic-Number-Theory/
25 http://www.dpmms.cam.ac.uk/Algebraic-Number-Theory/
29 fd
40 algebraic number theory
41 11Rxx
43 31.14
50 19990528
52 1994-
60 free
61 none
70 ***
71 ***
72 ***
73 **
74 professional
80 183 documents
82 Main site: about 375; mirror site in UK: about 10
90 Subscribers of the free mailing list receive announcements of preprints when they
are deposited in the archives. Additionally there is a search service which allows
you to search an index of on-line mathematical works for key words. The index
includes the preprints of this site automatically.
91 19990603
92 RV
94 prak
99 000232

EULER record (before the Iso tool)

<XREC>
<COC>University of Illinois at Urbana-Champaign, Department of
Mathematics, Urbana, IL, USA (dst)</COC>
<DA>1999-05-28</DA>
<DE>Preprints in the field of Algebraic Number Theory</DE>
<DE>QUALITY of scope/depth: excellent; of clarity/layout: excellent;
of indexing/strucure: excellent; of links: good; of level:
professional; numbers of entries: 183 documents; numbers of
backlinks: Main site: about 375; mirror site in UK: about 10</DE>
<DID>Date coverage: 1994-</DID>
<DMC>19990603</DMC>
<FO>dvi</FO>
<FO>text/html</FO>
<FOP>internet</FOP>
<IDL>http://www.dpmms.cam.ac.uk/Algebraic-Number-Theory/</IDL>
<IDL>http://www.math.uiuc.edu/Algebraic-Number-Theory/</IDL>
<LA>en</LA>
<OI>http://www.MathGuide.de/cgi-bin/ssgfi/anzeige.pl?
db=math&nr=000480&ew=SSGFI</OI>
<PU>(us) : University of Illinois at Urbana-Champaign,
Department of Mathematics, Urbana, IL, USA</PU>
<RC>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide-Team</RC>
<RS>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide: 000480</RS>
<SU>algebraic number theory</SU>
<SU>number theory</SU>
<SU>preprints</SU>
<SUM>11Rxx</SUM>
<TC>access: free</TC>
<TC>restrictions: none</TC>
<TI>Algebraic Number Theory Archives</TI>
<TY>Text.Serial</TY>
</XREC>

<META NAME="DC.Title" CONTENT="Network: Invariants and Representations of Algebras">
<META NAME="DC.Publisher" CONTENT="BIREP, Bielefeld, Germany">
<META NAME="DC.Publisher" CONTENT="Fakult&auml;t f&uuml;r Mathematik der
Universit&auml;t Bielefeld; Bielefeld; Germany">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Representation theory of
rings and algebras">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Invariant theory">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="16GXX">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="13AXX">
<META NAME="DC.Subject" CONTENT="network, invariant theory, representation theory,
algebra, Human Capital and Mobilty, HCM, EU">
<META NAME="DC.Description" CONTENT="This is the homepage of the Network Invariants
and Representations of Algebras. It informs about the research groups affiliated to the network and
links to some of these.">
<META NAME="DC.Type" CONTENT="WWW">
<META NAME="DC.Date" CONTENT="1998-02-23">
<META NAME="DC.Format" CONTENT="text/html">
<META NAME="DC.Language" CONTENT="en">
<META NAME="DC.Identifier" CONTENT="http://www.mathematik.uni-bielefeld.de/~sek/
E-C-net.html">
<META NAME="DC.Relation" SCHEME="URL" ROLE="parent" CONTENT="http://www.
mathematik.uni-bielefeld.de/~sek/">
<META NAME="DC.Coverage.t.min" CONTENT="1986">
<META NAME="DC.Rights.Access" CONTENT="free">
<META NAME="DC.Rights.Restriction" CONTENT="none">
<META NAME="SSG.TimeStamp" CONTENT="1998-03-30">
<META NAME="SSG.Country" CONTENT="DE">
<META NAME="SSG.Formal" CONTENT="so1">
<META NAME="SSG.Evaluation.Contents" CONTENT="*">
<META NAME="SSG.Evaluation.Clarity" CONTENT="**">
<META NAME="SSG.Evaluation.Index" CONTENT="*">
<META NAME="SSG.Evaluation.Links" CONTENT="***">
<META NAME="SSG.Evaluation.Level" CONTENT="graduate - professional">
<META NAME="SSG.Backlinks" CONTENT="12000">

00 000624
10 Network: Invariants and Representations of Algebras
13 BIREP, Bielefeld, Germany
14 Fakultät für Mathematik der Universität Bielefeld; Bielefeld; Germany
15 on
16 en
17 DE
18 text/html
19 network; invariant theory; representation theory; algebra; Human Capital and Mobilty;
HCM; EU
20 This is the homepage of the Network Invariants and Representations of Algebras. It
informs about the research groups affiliated to the network and links to some of these.
21 http://www.mathematik.uni-bielefeld.de/~sek/E-C-net.html
27 http://www.mathematik.uni-bielefeld.de/~sek/
29 so1
40 Representation theory of rings and algebras; Invariant theory
41 16GXX; 13AXX
50 19980223
52 1986-
60 free
61 none
70 *
71 **
72 *
73 ***
74 graduate - professional
82 12000
91 19980330
94 hiwi
99 000698

<XREC>
<COC>BIREP, Bielefeld, Germany (dst)</COC>
<DA>1998-02-23</DA>
<DE>QUALITY of scope/depth: fair; of clarity/layout: good; of
indexing/strucure: fair; of links: excellent; of level:
graduate - professional; numbers of backlinks: 12000</DE>
<DE>This is the homepage of the Network Invariants and
Representations of Algebras. It informs about the research groups
affiliated to the network and links to some of these.</DE>
<DID>Date coverage: 1986-</DID>
<DMC>19980330</DMC>
<FO>text/html</FO>
<FOP>internet</FOP>
<IDF>contained in (URL): http://www.mathematik.uni-bielefeld.de/~sek/</IDF>
<IDL>http://www.mathematik.uni-bielefeld.de/~sek/E-C-net.html</IDL>
<LA>en</LA>
<OI>http://www.MathGuide.de/cgi-bin/ssgfi/anzeige.pl?
db=math&nr=000624&ew=SSGFI</OI>
<PU>(de) : BIREP, Bielefeld, Germany</PU>
<PU>(de) : Fakultät für Mathematik der Universität Bielefeld,
Bielefeld, Germany</PU>
<RC>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide-Team</RC>
<RS>Niedersächsische Staats- und Universitätsbibliothek
Göttingen/MathGuide: 000624</RS>
<SU>EU</SU>
<SU>HCM</SU>
<SU>Human Capital and Mobilty</SU>
<SU>algebra</SU>
<SU>invariant theory</SU>
<SU>network</SU>
<SU>representation theory</SU>
<SUM>13AXX</SUM>
<SUM>16GXX</SUM>
<TC>access: free</TC>
<TC>restrictions: none</TC>
<TI>Network: Invariants and Representations of Algebras</TI>
<TY>Text.Homepage</TY>
</XREC>

<META NAME="DC.Title" CONTENT="European Research Consortium for Informatics and
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<META NAME="DC.Creator" CONTENT="ERCIM">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Mathematics (applied)">
<META NAME="DC.Subject" SCHEME="MSCverbal" CONTENT="Computer Science">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="00-XX">
<META NAME="DC.Subject" SCHEME="MSC" CONTENT="68-XX">
<META NAME="DC.Subject" CONTENT="ERCIM, Europe, organisation">
<META NAME="DC.Description" CONTENT="The European Research Consortium for Informatics
and Mathematics (ERCIM) is an organisation dedicated to the advancement of European research and
development in the areas of information technology and applied mathematics. ERCIM partners:
CLRC (UK), CWI (Netherlands), IEI-CNR (Italy), CRCIM (Czech Rep.), DANIT (Denmark),
FORTH (greece), GMD (Germany), INRIA (France), INESC (Portugal), SICS (Sweden), SARIT
(Switzerland), SINTEF (Norway), SRCIM (Slovak Rep.), SZTAKI (Hungary), VTT (Finland).">
<META NAME="DC.Type" CONTENT="<META NAME="DC.Format" CONTENT="text/html">
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<META NAME="SSG.TimeStamp" CONTENT="1999-05-14">

00 001155
10 European Research Consortium for Informatics and Mathematics (ERCIM)
11 ERCIM
18 text/html
19 ERCIM; Europe; organisation
20 The European Research Consortium for Informatics and Mathematics (ERCIM) is an organisation dedicated to the advancement of European research and development in the areas of information technology and applied mathematics. ERCIM partners: CLRC (UK), CWI (Netherlands), IEI-CNR (Italy), CRCIM (Czech Rep.), DANIT (Denmark), FORTH (greece), GMD (Germany), INRIA (France), INESC (Portugal), SICS (Sweden), SARIT (Switzerland), SINTEF (Norway), SRCIM (Slovak Rep.), SZTAKI (Hungary), VTT (Finland).
21 http://www.ercim.org
40 Mathematics (applied); Computer Science
41 00-XX; 68-XX
91 19990514
96 Frank A. Roos (EULER)
97 F.A.Roos@cwi.nl
98 Anonym auf dem Rechner lpwa.com, 19990514.
99e20000111

<XREC>
<DE>The European Research Consortium for Informatics
and Mathematics (ERCIM) is an organisation dedicated to
the advancement of European research and development in
the areas of information technology and applied
mathematics. ERCIM partners: CLRC (UK), CWI (Netherlands),
IEI-CNR (Italy), CRCIM (Czech Rep.), DANIT (Denmark),
FORTH (greece), GMD (Germany), INRIA (France), INESC
(Portugal), SICS (Sweden), SARIT (Switzerland), SINTEF
(Norway), SRCIM (Slovak Rep.), SZTAKI (Hungary), VTT
(Finland).</DE>
<DMC>19990514</DMC>
<FO>text/html</FO>
<IDL>http://www.ercim.org</IDL>
<OI>http://www.MathGuide.de/cgi-bin/ssgfi/anzeige.pl?
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<RC>CWI/MathGuide-Team</RC>
<RS>Niedersächsische Staats- und Universitätsbibliothek
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<SU>ERCIM</SU>
<SU>Europe</SU>
<SU>organisation</SU>
<SUM>00-XX</SUM>
<SUM>68-XX</SUM>
<TI>European Research Consortium for Informatics and Mathematics (ERCIM)</TI>
<FOP>internet</FOP>
</XREC>

A.4 Formats of MathGuide

Links to External Files

Description of the Final Data Set

 Description Page for the EULER Service