The Application Of Resources Dynamic Definition Model In Document Digitization And Resource Sharing Platform

Along with the development of information era,the digital resources are becoming more abundant,and it is more convenient for the use,spread,and sharing of digital resources than traditional resources.In order to facilitate the use and the management,the originally non-digital resources such as historical archives,are gradually prepared for digitization.There are many types of the mass digital resources,including audio,video,text,image and so on.Every type contains many kinds of formats.Every type has plentiful and complicated attributions.Every type possesses many different metadata standards.And every type can be shown in a totally different style.Considering all these complexities,it is significant to build a digital resources platform which is flexible,extensible and has comprehensive functions.This dissertation based on the science and technology innovation platform project of Shaanxi province which is numbered as 13115 items,does some studies about the dynamic mechanism of the digital resource,such as attribute definition,acquisition,processing and display of digital resources.All these functions are achieved in the popular web development environment,and the specific conductions are acted just as follows:We put forward the resources dynamic definition model.Combined with database relationship theory,ajax theory,PHP,thinkphp,DWZ and some relevant technologies,we came out the dynamic and automatic definition of the resources type,the processing of resource attribute as dynamic defining,adding,editing,deleting,hiding.With the digital library metadata standards,we realized the resource attribute value standardization management.Combined with multimedia coding and decoding technology and the support from related open source software,we achieved the automatic conversion of the resources,and realized numerous file format support.This system also supported the transformation of the popular file format,and allow a screenshot.Based on the principle of design patterns,the process of transformation of resources are designed and integrated together,we also designed the convert task to be automatic time scheduling.Combined with flex and some related technologies,we came out the online play of various resources.According to the design model theory,we optimized the processes of resource online playing and made the realization of the resource play extensible and configurable.Our study realized the dynamic resources definition model.After a trial run,it was proofed that this model can effectively solve the problem brought by the complexity of resource definition and numerous resources format support.this system is flexible,comprehensive,adaptive,and has a great practical value.