Abstract:

Open access resources in institutional repositories is the important parts of network information resources of aggregate objects, at present resources in institutional repositories directly influence the aggregation efficiency and quality. The resource aggregation of institutional repository can make up the issue of discipline and major setting’s lack of consistency in institutional repository’s organization mode. Organization mode taking key knowledge of disciplines as nodes is easier for user to utilize. Secondly, aggregation can avoid the failure to realize unified standard and unified platform as well as the failure to realize the sharing of knowledge point network caused by the form of multiple software. Last but not least, through visual knowledge chain display technology, aggregation can even open the access at the knowledge level within the scope of copyright permission, thus breaking through the previous limitation of copyright because of which the full text cannot be obtained and the usefulness of information’s content cannot be recognized. Data collection is conducted through investigating the distribution conditions of open access resources of library and information field in OpenDOAR, relevant policies and data access modes. The investigation time is from February 2016 to March 2016. Following conclusions are obtained through analysis results: (1)Aggregation conditions of multilingual resources are equipped. English resources occupy the majority while the amount that can be aggregated of Chinese resources is relatively insufficient. (2)The supply of aggregation resources is guaranteed, but the resource updating cycle is long. (3)The types of aggregation resources are diversified. Traditional journal articles and academic dissertation still take a leading role and there is still a big demand in nontextual resources. (4)The issue of intellectual property is the biggest obstacle to realize aggregation. (5)Data open access mode provides foundation for aggregation. Adopting OAIPMH interoperability protocol standard is convenient for crossrepository resource.

Key words: LIS, IR, Information aggregation, Open access, Copyright, Aggregative, OpenDOAR