The article states that causal ambiguity embed in unique resources、core competence and tacit knowledge so that further the explanation of internal association from four aspects between casual ambiguity and sustained competitive advantage.

This paper probes into the characteristic resource of ceramic patent information platform under the network environment form aspects of information sources,information resource collection targets,researches on characteristic resource of network patent information platform and the regular updating and maintenance of network resource.

This paper expounds the necessity of higher vocational college library s carrying out the characteristic resource digitalization construction,points out the contents of digital characteristic resource construction,and advances some methods and ways for characteristic resource digitalization construction of university library.

Database building is one important means of the library carry out building of characteristic resource and increment service under net and information condition.