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Take a digital libraries' service system for example, Objects Served Relationship Management (OSRM) in complex systems is proposed firstly as a new concept, and its connotation is explained. The significances and constructions of OSRM are analyzed. Both the fundamental facts and the important natures that the things which are interested by Objects Served (OS) (e. g. publishers and readers) and the server (e. g. digital libraries are the servers of publishers and readers) will not be the same completely although there are a lot of common benefits between OS and servers, are indeed clarified. The valuable information,which should be used by OS and their server, is often hidden behind them. Thus, how to find, manage and control the relationship among OS and their servers is very necessary and important for the common benefits among all of them.(e. g. the three dimensions of OSRM in digital library system and its overall framwork are proposed. The different strategies to different cases in the digital library's multidimensional framework are analyzed.) 相似文献
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为探讨二阶线性半群间的同态问题,在引进标准型、延断型、平凡型概念的基础上,通过矩阵计算与群的定义关系,描述了二元域F2上的线性半群M2(F2)到任意域K上的线性半群M2(K)的同态形式。进而为描绘F2上的线性半群Mn(F2)到任意域K上的线性半群Mm(K)(n≥m)的同态形式,奠定了坚实的基础。 相似文献
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设R为结合环。文献[3]证明了:设R是具有正则元的半质环,如果R满足条件:对于任意的x,y∈R,都存在一个与x,y有关的整数n=n(x,y)≥1,使得(xy)n+k=xn+kyn+k,k=0,1,2,则R为交换环。给出上述结果的一个简短证明,并将其推广,证明了定理:设R是具有正则元的半质环,如果R满足条件:对于任意的x,y∈R,都存在一个与x,y有关的整数n=n(x,y)≥1,使得(xy)n+k=yn+kxn+k,k=0,1,2,则R为交换环。 相似文献
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设R为结合环,Z(R)为其中心.证明了:设R为半质环,a∈R,2a为非零因子,正整数n=n(x,y)及M,其中1相似文献