This article introduces social background and the primary coverage of " Demonstration Standard of Russian Public library Activity " which was passed by Russian Library Academic in 2001,summarizes main characteristic of this standard,analyzes the vital role of library professional consciousness and spirit to library development and library legalization construction,pointes out that our country should attach importance to library professional standard which has vital significance to information resource development and use.
Use Case Model is the most important model in UML. This paper discusses a particular application of using Enterprise Use Case model and System Use Case model to build Use Case model in digital library system.
This paper introduces the concept,scope and qualifying standard of the fair use,probes into the fair use in the copy service of library,and advances some suggestions on perfecting the fair use system of copy right in Chinese library service.
We can use library network platform, C+ + Builder as the development tool and new XML technologies as the search software to produce a database system of electronic information resources, which have effectiveness, practicality and other features.
By the use of the quantitative analysis method,this article picks out 479 theses from Information Studies:Theory & Application published from 2000 to 2002 and makes a statistical analysis of its theses,authors and citations in an attempt to find the law of the development of this magazine in recent 3 years
This paper describes 4 notable Z39 50 application cases of virtual union catalogues with a brief introduction of the development of latest released Z39 50 standard and"Z39 50 International:Next Generation"(ZING),and indicates the trend and motivity of this standard and protocol which lies on effectively lowering implementation barriers and efficiently solving interoperability problems by the use of mainstream technologies such as XML,Web Services and so on along with valid mechanisms such as Z39 50 profiles.
We use the theory of tilting modules for algebraic groups to propose a characteristic free approach to "Howe duality" in the exterior algebra.
For the case of positive characteristic we use the classification of finite irreducible groups generated by pseudoreflections due to Kantor, Wagner, Zalesski? and Sere?kin.
In the interesting case when the group is of Coxeter typeDn (n≥4) we use higher polarization operators introduced by Wallach.
We also use known results about canonical bases forUq2 to get a new proof of recurrent formulas for KL polynomials for maximal parabolic subgroups (geometrically, this case corresponds to Grassmannians), due to Lascoux-Schützenberger and Zelevinsky.
We use invariant theory to compute the exact number of nonzero idempotents of an arbitrary 2-dimensional real division algebra.