Analyzing the Persistence of Referenced Web Resources with Memento

In this paper we present the results of a study into the persistence and availability of web resources referenced from papers in scholarly repositories. Two repositories with different characteristics, arXiv and the UNT digital library, are studied to determine if the nature of the repository, or of its content, has a bearing on the availability of the web resources cited by that content. Memento makes it possible to automate discovery of archived resources and to consider the time between the publication of the research and the archiving of the referenced URLs. This automation allows us to process more than 160000 URLs, the largest known such study, and the repository metadata allows consideration of the results by discipline. The results are startling: 45% (66096) of the URLs referenced from arXiv still exist, but are not preserved for future generations, and 28% of resources referenced by UNT papers have been lost. Moving forwards, we provide some initial recommendations, including that repositories should publish URL lists extracted from papers that could be used as seeds for web archiving systems.Comment: 4 pages, 5 figures. Accepted to Open Repositories 2011 Conferenc

Datacite: The International Data Citation Initiative: Datasets Programme

DataCite is an international consortium which aims to increase acceptance of research data as legitimate, citable contributions to scholarly communication. To enable this DataCite assigns persistent identifiers for research datasets and manages the infrastructures that support simple and effective methods of data citation, discovery and access. DataCite leverages the DOI infrastructure, which is already well-established. DOI names are the mostly widely used identifier for scientific journal articles, so researchers, authors, and publishers are familiar with their use. DataCite takes an open approach, however, and considers identifier systems and services that help forward its objectives. DataCite is represented in the UK by the British Library. This summary of the British Library's involvement in DataCite was presented to the UK data Forum on Monday the 15th November 2010. Data publishers that wish to know more about DataCite or to use DataCite services are encouraged to contact the Library or their local DataCite members

DataCite: The International Data Citation Initiative - Datasets programme

DataCite is an international consortium which aims to increase acceptance of research data as legitimate, citable contributions to scholarly communication. To enable this DataCite assigns persistent identifiers for research datasets and manages the infrastructures that support simple and effective methods of data citation, discovery and access. DataCite leverages the DOI infrastructure, which is already well-established. DOI names are the mostly widely used identifier for scientific journal articles, so researchers, authors, and publishers are familiar with their use. DataCite takes an open approach, however, and considers identifier systems and services that help forward its objectives. DataCite is represented in the UK by the British Library. This summary of the British Library's involvement in DataCite was presented to the UK data Forum on Monday the 15th November 2010. Data publishers that wish to know more about DataCite or to use DataCite services are encouraged to contact the Library or their local DataCite members

DataCite – services and support for opening up research data

Scientific Information is more than a journal article or a book, are data. Libraries should open their catalogues to any kind of information: data. URLs are not persistent to identify datasets. DOI (Digital Object Identifier) offer a solution for the Data citation: persistent identifier enabling citation and providing a stable link to digital resources, like research data sets. DOI names for access and citations. DataCite is a global consortium focused on working with data centres and organisations that hold data, providing standards, workflows and best-practice

DataCite: The International Data Citation Initiative Datasets Programme

DataCite is an international consortium which aims to increase acceptance of research data as legitimate, citable contributions to scholarly communication. To enable this DataCite assigns persistent identifiers for research datasets and manages the infrastructu res that support simple and effective methods of data citation, discovery and access. DataCite leverages the DOI infrastructure, which is already well-established. DOI names are the mostly widely used identifier for scientific journal articles, so researchers, authors, and publishers are familiar with their use. DataCite takes an open approach, however, and considers identifier systems and services that help forward its objectives. DataCite is represented in the UK by the British Library. This summary of the British Library’s involvement in DataCite was presented to the UK data Forum on Monday the 15th November 2010. Data publishers that wish to know more about DataCite or to use DataCite services are encouraged to contact the Library or their local DataCite members. Further information and useful websites: www.datacite.org.uk / www.datacite.org / www.doi.orgOpen Access, Research Data, Scientific Use, Public Use

Accessibility and Types of Online Sources Cited in Scholarly Biomedical Journal in Iran

One type of frequently used references in scientific papers is online references. The aim of this study is to study the prevalence, accessibility and types of online sources in biomedical journals in Iran from 2010 to 2012. We analyzed online references cited in 401 articles from 21 scientific journals indexed in PubMed, Web of Science, and Scopus. Findings revealed that only 73 papers (18.2%) had cited online sources in their references. of 186 online citations, 72 (38.7%) citations were accessible, and the URLs to 114 citations did not work (61.3%). The majority of unreachable citations were unstable citations (32.3%). Most online sources (62%) were cited in “Iranian Journal of Public Health”. An increase in the number of online citations was observed over the studied years. The study indicated that the rate of online citations is low in the studied journals, and most online citations were unreachable. The lack of clear guidelines in citing online sources seemed to be a major reason for the inaccessibility of online citations

The Availability and Persistence of Web Citations in Iranian LIS Journals (2006-2010)

To discover the current situation and characteristics of Web citations accessibility, the present study examined the accessibility of 4,253 Web citations in six key Iranian LIS journals published from 2006 to 2010. The proportion percentage of Web citations increased from 11% in 2006 to 30% in 2010. The most widely cited top level domains in URLs include the .edu and .org with respectively 37% and 23%. This study provides further evidence that organizations Websites have become increasingly vulnerable to URL decay .The results show that only 3,467 Web citations remain accessible in 2011, of which 71% allowed easy and long-term access to author information contained in URLs. Long time inaccessibility to author information was shown to be mostly from URLs that returned the 404 error and also the URLs that had gone through an information update. A 4-year half-life was estimated for Iran’s LIS Publications. The results suggest that the decay of URLs is a grave problem in the publications of Iran’s LIS researchers and cannot be overlooked. These authors need to gain the necessary knowledge about using Web citations as major sources of information for their publications

Availability and Preservation of Scholarly Digital Resources

The dynamic, decentralized world-wide-web has become an essential part of scientific research and communication, representing a relatively new medium for the conveyance of scientific thought and discovery. Researchers create thousands of web sites every year to share software, data and services. Unlike books and journals, however, the preservation systems are not yet mature. This carries implications that go to the core of science: the ability to examine another\u27s sources to understand and reproduce their work. These valuable resources have been documented as disappearing over time in several subject areas. This dissertation examines the problem by performing a crossdisciplinary investigation, testing the effectiveness of existing remedies and introducing new ones. As part of the investigation, 14,489 unique web pages found in the abstracts within Thomson Reuters’ Web of Science citation index were accessed. The median lifespan of these web pages was found to be 9.3 years with 62% of them being archived. Survival analysis and logistic regression identified significant predictors of URL lifespan and included the year a URL was published, the number of times it was cited, its depth as well as its domain. Statistical analysis revealed biases in current static web-page solutions

DataCite – services and support for opening up research data

Scientific Information is more than a journal article or a book, are data. Libraries should open their catalogues to any kind of information: data. URLs are not persistent to identify datasets. DOI (Digital Object Identifier) offer a solution for the Data citation: persistent identifier enabling citation and providing a stable link to digital resources, like research data sets. DOI names for access and citations. DataCite is a global consortium focused on working with data centres and organisations that hold data, providing standards, workflows and best-practice