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混合晶体CsMg1-xFexCl3中Fe^(2+)的光谱研究
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作者 刘其城 王慧素 《长沙水电师院自然科学学报》 CAS 1989年第2期55-60,共6页
关于混合晶体CsMgl-xFexCl_3(x=0.04~0.2),以往人们认为处在其中的Fe^2离子具有Oh配位态,但是,这种模型无法指定Fe^(2+)离子的吸收光谱.本文指出这类混合晶体中Fe^(2+)离子应处于D_(3d)配位态,采用一种方块对角化的简化强场方案,考虑... 关于混合晶体CsMgl-xFexCl_3(x=0.04~0.2),以往人们认为处在其中的Fe^2离子具有Oh配位态,但是,这种模型无法指定Fe^(2+)离子的吸收光谱.本文指出这类混合晶体中Fe^(2+)离子应处于D_(3d)配位态,采用一种方块对角化的简化强场方案,考虑了旋轨耦合和晶场相互作用的组合效应(即相互作用)后,所有观察到的吸收谱带都得到了较为满意的理论解释,并确定了混合晶体CsMg_(1-x)FexCl_3(x=0.04~0.2)中Fe^(2+)离子的基态是单态~5A_1g. 展开更多
关键词 混合晶体 配位态 吸收谱
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Semantic-based dynamic positioning mechanism for problem solving in multi-agent systems
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作者 李青山 褚华 +1 位作者 薛宝叶 张超 《Journal of Central South University》 SCIE EI CAS 2014年第2期618-628,共11页
In multi-agent systems(MAS),finding agents which are able to service properly in an open and dynamic environment are the key issue in problem solving.However,it is difficult to find agent resources quickly and positio... In multi-agent systems(MAS),finding agents which are able to service properly in an open and dynamic environment are the key issue in problem solving.However,it is difficult to find agent resources quickly and position agents accurately and complete the system integration by the keyword matching method,due to the lack of clear semantic information of the classical agent model.An semantic-based agent dynamic positioning mechanism was proposed to assist in the system dynamic integration.According to the semantic agent model and the description method,a two-stage process including the domain positioning stage and the service semantic matching positioning stage,was discussed.With this mechanism,proper agents that provide appropriate service to assign sub-tasks for task completion can be found quickly and accurately.Finally,the effectiveness of the positioning mechanism was validated through the in-depth performance analysis in the application of simulation experiments to the system dynamic integration. 展开更多
关键词 multi-agent systems(MAS) task revolution SEMANTICS dynamic location
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