In practice, considering the error caused by data sampling, author has made use of program judgement method which belongs to digital filter method to make error signal be within allowable scope.
In Empirical Study, the scope of sampling including the "Chang-zhu-tan District" of horizontal strategic alliance enterprises already established or soon to be established.
实证所采样的范围是长株潭区域即将组建或已组建水平型战略联盟的企业。
3
Taking random sampling method, analyzes the scope, organization, novelty and friendness of the academic information resources and points out the existing problems.