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Consultative Committee for Space Data Systems
No full textThis document has been approved for publication by the Management Council of the Consultative Committee for Space Data Systems (CCSDS) and represents the consensus technical agreement of the participating CCSDS Member Agencies. The procedure for review and authorization of CCSDS Recommendations is detailed in the reference [A1], and the record of Agency participation in the authorization of this document can be obtained from the CCSDS Secretariat at the address below. This Recommendation is published and maintained by: CCSDS Secretariat Office of Space Communication (Code M-3) National Aeronautics and Space Administration Washington, DC 20546, USA STATEMENT OF INTENT The Consultative Committee for Space Data Systems (CCSDS) is an organization officially established by the management of member space Agencies. The Committee meets periodically to address data systems problems that are common to all participants, and to formulate sound technical solutions to these problems. Inasmuch as participation in the CCSDS is completely voluntary, the results of Committee actions are termed Recommendations and are not considered binding on any Agency. This Recommendation is issued by, and represents the consensus of, the CCSDS Plenary body. Agency endorsement of this Recommendation is entirely voluntary. Endorsement, however, indicates the following understandings: o Whenever an Agency establishes a CCSDS-related standard, this standard will be in accord with the relevant Recommendation. Establishing such a standard does not preclude other provisions which an Agency may develop. o Whenever an Agency establishes a CCSDS-related standard, the Agency will provide other CCSDS member Agencies with the following information: -- The standard itself. -- Th..
Consultative Committee for Space Data Systems
No full textThe major space agencies of the world recognize that there are benefits in using standard techniques for handling space data and that, by cooperatively developing these techniques, future data system interoperability will be enhanced. In order to assure that work towards standardization of space-related information technologies provides the maximum benefi t for
the interested agencies, both individually and collectively, an international Consultative Committee for Space Data Systems (CCSDS) was established in 1982 as a forum for international cooperation in the development of data handling techniques supporting space research, including space science and
applications. In 1991, the committee was incorporated as a subcommittee of the International Organization for Standardization (ISO).
The article describs the work of CCSDS till its beginning in the 80s till today (2009)
Reference Model for an Open Archival Information System (OAIS)
No full textSe ha convertido en norma ISO 14721:2003Recomendación técnica que establece un marco común de términos y conceptos comprendidos en un sistema de información de archivo digital
(OAIS). Incluye pautas de conservación y almacenamiento de objeto digitales, así como el proceso de gestión de los mismos
Open Access institutional archives: a quantitative study (2006-2010)
Get PDFOpen access publishing is growing in importance, and, in parallel, the role of institutional archives has come to the forefront of discussion within the library community. The present study is an attempt to analyse the present trend of institutional archives worldwide. The factual data of each individual repository was collected from various Directories of Institutional Repositories by using survey method. Data was analysed in terms of quantity of institutional archives increased during last six years, countrywise contents of institutional archives, types of materials archived, subject coverage, software used, language of interface of institutional archives, host domains, and policy of institutional archives. The results of the study suggest healthy growth in terms of quantity of institutional archives' increase worldwide, however, the development is more prevalent in developed countries than developing countries. The subject analysis of the institutional archives indicates that the contributors in the field of health and medicine are more interested to submit their materials in repositories. Currently the institutional archives mostly house traditional (print-oriented) scholarly publications and grey literature, using DSpace software and most of these materials were of English language. However, the policy of content inclusion, submission and preservation is yet to be well defined in institutional archives
Overview of the Current CCSDS Program of Work
No full textThis viewgraph presentation gives an overview of the Consultative Committee for Space Data Systems (CCSDS) program of work in space standardization
Status of Institutional Repositories in Asian Countries: A Quantitative Study
Get PDFICT and availability of open sources software packages has enabled most of the institutions to maintain institutional repository or archive to collect, preserve, and make accessible the intellectual output created by their scholarly communities. There are more than 1800 Institutional Repositories (IRs) world wide of which more than 50% are in USA, UK, Germany and Spain. There has been relatively little systematic examination of the actual state of deployment of IRs in Asian countries. This study attempts to identify the present status of IRs in the countries of Asia. Data of repositories was collected from various directories of IRs. Data is analyzed in terms of quantity of IRs increased during last five years, country-wise IRs and number of objects, types of materials archived, subject coverage, software used, language of interface, host domains, and policy maaters. The results of the study suggest healthy growth in terms of quantity of IRs in Asian countries. The subject analysis of the IRs indicates that the institutes in the field of sciences and technology are more interested to create IRs than social sciences, arts and humanities. Currently the IRs mostly housed traditional (print-oriented) scholarly publications and grey literature, using DSpace software and most of these materials were of English language. However, the policy of content inclusion, submission and preservation is yet to be well defined in IRs
Economic evaluation of LIFE methodology
No full textBackground:
The LIFE project (Lifecycle Information For E-Literature) was carried out during 2004-2006
by a consortium consisting of The British Library and University College London Library
Services . The project was joint venture funded by JISC under the programme area
Institutional Management Support and Collaboration. The project has received favourable
feedback, for instance during a workshop organised at the end of it, and JISC has agreed to
fund a second phase during 2007-2008. The consortium has been strengthened by three
associate partners (SHERPA-LEAP Consortium, SHERPA-DP and the Medical Research
Council). In addition some funds were reserved for the use of an outside economic consultant
for an evaluation of the life-cycle models that emerged as the key results from the first phase.
The LIFE-2 project consists of five work packages, and this report is part of the first of these.
The objective of WP 1 is formulated in the LIFE
2
Project proposal as follows:
Validation of the economic modelling and methodology for the Lifecycle and Generic
Preservation formulae developed in Phase 1 of the LIFE project, with technical and
presentational development of the models.
Cloudlake Consulting Oy has been commissioned by the consortium to carry out this
validation. The report has been written by Bo-Christer Björk. He is professor of Information
Systems Science at the Swedish School of Economics and Business Administration in
Helsinki, Finland. He has been conducting research concerning the scientific publishing
process since 2000 and has published several peer reviewed journal articles as well as
conference papers on the subject. He is often an invited speaker at international workshops in
this area
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IRIG-106 PCM IMPLEMENTATION UTILIZING CONSULTATIVE COMMITTEE FOR SPACE DATA SYSTEMS (CCSDS)
No full textInternational Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, NevadaAsynchronous data sources such as those associated with Space Based Radar create a unique problem for Time Division Multiplexed (TDM) Pulse Code Modulation (PCM) frame formats. The problem consists of data arrival based on external occurrences such as target tracking, and not due to sampling polls from internal sequencers. Reserved time slots for asynchronous data must be provided within the synchronous TDM telemetry stream. This increases the required bandwidth to transfer collected data to ground sites proportional to the worst case arrival rate of asynchronous data and the maximum latency allowed for the application. Asynchronous data is readily handled by the Consultative Committee for Space Data Systems (CCSDS) recommended formats without the need to increase the bandwidth disproportionately. The recommendation maintains the ability to provide synchronous telemetry data collection and transmission provided by the TDM PCM frame formats. This paper provides an implementation of CCSDS recommendations and addresses the methodology of merging asynchronous and synchronous data sources without the prerequisite increase in bandwidth associated with purely synchronous TDM approaches. Additional implementation details are provided for the implementation of a Telemetry Operation Procedure (TOP) to downlink error free telemetry frames. The TOP is not currently supported within the CCSDS recommendation. The implementation is provided through the Micro Packaged Data Acquisition and Control Systems developed by SCI Technology in Huntsville, Alabama.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection
Planets: Integrated Services for Digital Preservation
Get PDFThe Planets Project is developing services and technology to address core challenges in digital preservation. This article introduces the motivation for this work, describes the extensible technical architecture and places the Planets approach into the context of the Open Archival Information System (OAIS) Reference Model. It also provides a scenario demonstrating Planets’ usefulness in solving real-life digital preservation problems and an overview of the project’s progress to date
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