福建史志学研究的一部巨著——《福建旧方志综录》述评

作为一部让文史界同仁翘首以待的史籍,《福建旧方志综录》不仅包括了福建历代所修各种通志(省志、府志、州志、厅志、县志)及专志、杂志的志书志料书目,还对与志书有关的地名、人物进行了详尽的考证。它是一部学术巨著,也是一座资料宝库,虽然该书存在一些不足,但仍不失为福建史志学的巨著、中国旧方志综录的典范。     

杉木球果麦蛾空间分布型的研究

用比较频次法、聚集度指标法、ｌｗａｏ与Ｔａｙｌｏｒ的回归分析法，在国内首次对杉木球果麦蛾幼虫和蛹的空间分布型进行研究。结果表明幼虫和蛹均为聚集分布。并用Ｂｌａｋｉｔｈ提出的＂聚集均数＂法对聚集原因分析表明，幼虫和蛹的聚集均与其栖境有直接关系。生物学特性的作用只能通过种群密度的变化表现出来。     

Disaggregation of annual time-series data to quarterly figures: A comparative study

In this paper we consider some of the prominent methods that are available in the literature for the problem of disaggregating annual time-series data to quarterly figures. The procedures are briefly described and illustrated through a real data set. The performances of the methods are compared in a Monte Carlo study. The results indicate that the complicated model-based procedure is usually superior to other non-model-based alternatives in the large sample situations. Based on the simulation results, we make some recommendations regarding the use of these methods.     

基于次近邻扩散聚集生长的复杂网络及其分析

提出了一种基于次近邻扩散聚集生长的复杂网络模型生成法则.用于刻画与扩散置限凝聚等复杂现象相关的实测对象.通过细致的计算机仿真模拟,初步研究了生成半随机复杂网络的一些典型数字特征:包括度分布、网络直径、平均路径长度、平均聚类系数等.研究结果表明,按照提出的方法产生的复杂网络具有短的平均路径长度、较高的平均聚类系数、具备明显的齐次网络特性.同时,在变动跳动概率之差时,生成网络直径、平均路径长度、网络平均聚类系数等呈现规律性变化;且生成网络直径、平均路径长度与网络平均聚类系数呈负相关关系.     

基于无线传感器网络的数据融合技术

阐述了WSN数据融合技术的特点和原理,重点分析了WSN数据融合技术中具有代表性的几种算法的工作原理和优缺点.     

迁移者的空间选择机制分析——基于人力资本和社会资本视角

迁移者自由流动并聚集,是市场经济条件下的一种经常发生的社会经济现象。在迁移者的空间选择聚集这种现象背后,必然存在着一种经济学可以解释的经济关系和逻辑。人力资本积累与流入地工作的匹配程度决定了流动的方向,社会资本存量决定了其集聚的程度。人力资本积累与社会资本依赖度在迁移者流动过程中具有一定的负相关关系,低人力资本积累的人对社会资本的依赖性更强。     

A dynamic linear model approach for disaggregating time series data

An approach is proposed for obtaining estimates of the basic (disaggregated) series, x_i, when only an aggregate series, y_t, of k period non-overlapping sums of x_i's is available. The approach is based on casting the problem in a dynamic linear model form. Then estimates of x_i can be obtained by application of the Kalman filtering techniques. An ad hoc procedure is introduced for deriving a model form for the unobserved basic series from the observed model of the aggregates. An application of this approach to a set of real data is given.     

纳米级二氧化锆超细粉末表面结构的表征

应用深胶－凝胶法制备了钇稳定立方相二化锆超细粉。研究了其形态?比表面和表面微孔分布。结果表明：二氧化锆超细粉末呈球形或近似球形，表面存在大量孔径为４０Ａ左右的微孔。     

对热力学第二定律的补充

基于客观事实,对已经应用了三百多年的热力学第二定律的普适性提出质疑,论证了被热力学第二定律忽略了的自然过程存在的普遍性。在此基础上,提出了对热力学第二定律补充方案,进一步探讨了补充部分的现实意义。     

Multi-agent aggregation behavior analysis: The dynamic communication topology*

The authors extend the Gazi＇s swarm model with local neighbor rules and the dynamic communication topology, and study its aggregation properties. Results of analysis show that all agents in the models aggregate and eventually form a cohesive cluster of finite size around the swarm center or the appointed point. Finally, simulations are provided to testify some of the results. Models in the paper are more applicable to the reality for the advantage that each agent only needs the partial information of the entire dynamic system when making motion decision.