强 非 游 荡 集 与 分 布 混 沌

通过在紧致系统中引入强非游荡集的概念, 给出了系统为分布混沌的一个必要条件, 并构造了没有分布混沌对的Li Yorke混沌子移位. 结果表明, 对于子移位分布混沌与Li Yorke混沌不等价.     

0-1符号空间上的*积子移位

参照Feigenbaum搓揉子移位的定义, 给出了*积子移位 的概念, 并通过探讨*积子移位与代换子移位的关系, 利用代换子移位的已有结果证明了每个*积子移位都是极小的、 惟一遍历的以及在Li Yorke意义下非混沌且具有零拓扑熵, 由此推出每个Feigenbaum搓揉子移位也具有上述性质.     

强非游荡集与分布混沌（Ⅱ）

利用子移位构造一个只有两个强非游荡点的分布混沌系统. 结果表明, 只要两个强非游荡点就有可能产生分布混沌.     

混沌吸引子统计特性的一种分析方法

基于混沌吸引子的细胞模型,本文提出分析混沌吸引子统计特性的一种方法,这一方法可给出各类周期轨道的直方图。从而详细地描述混沌吸引子并得到其主要参数。利用分析所得信息可找到“热引子”以及混沌吸引子之间的差别,文中分别给出了Ｒｏｓｓｌｅｒ方程和蔡氏电路的混沌吸引子的直方图。     

一类有限型子移位的混沌性态

对任何k≥2, 考虑由k阶0-1矩阵A_k=(a_ij)决定的有限型子移位, 其中, a_ij=1当且仅当i=k或j=i+1. 通过与限制在某不变集上的区间映射建立拓扑共轭关系, 证明了该类子移位是分布混沌的.     

一个新离散非线性系统的混沌现象

提出了一个尚未见过报道的离散非线性系统,并指出此离散非线性系统存在混沌现象,其混沌吸引子很像洛沦滋混沌吸引子的轮廓。     

一个新离散非线性系统的混沌现象

提出了一个尚未见过报道的离散非线性系统,并指出此离散非线性系统存在混沌现象,其混沌吸引子很像洛沦滋混沌吸引子的轮廓.     

一个具有全局吸引混沌吸引子的系统及其混沌同步

报道了一个分段线性离散系统的混沌吸引子,通过系统对初始条件的敏感依赖性研究,得出此吸引子是全局吸引的.为进一步证实此系统是混沌系统,又对此系统进行了不同初始条件下的混沌同步研究,利用反馈同步方法,很容易地实现了此系统的混沌同步.最后对混沌系统的开关项变化问题进行了研究,通过数值计算,得出不同开关参数下,混沌吸引子的形状是完全一样的,不同的是混沌吸引子在状态空间的形状围成的面积将发生变化.     

混沌吸引子细胞模型的扩展与详述(1)

引入了空间分叉,单向运动,主鞍周期轨道和混合吸引子等新概念,基于这些概念,提出了一个定理和三个推论,并在文中的第二部分将提出一个混沌吸引子的分层结构,同时给出了混沌吸引子细胞模型的扩展及其完整描述。     

永磁同步电动机混沌系统的反控制

对于永磁同步电动机系统加上一个线性控制项,使原来非混沌的甚至稳定的永磁同步电动机系统呈现出混沌行为,即为混沌的反控制或混沌化,所得到的新的混沌吸引子具有与以前的吸引子完全不同的拓扑结构,对反控制方法以及这个新吸引子的研究具有重要的理论和实际意义。     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

三昧:佛教审美感悟的主要形式

佛教对中国古代学创作和审美产生了巨大影响，这已经是不争的问题。而在感应外物的心理知觉上与学审美究竟有何内在联系及区别，则又大多语焉不详，或详而无纲、油水分离。笔从佛教教义中拈出“三昧”两个字，深入探寻佛教审美感悟的主要方式，分析它与庄子“心斋”及俗人梦幻的同异，这对中国古代学审美理论的梳理和建构都有重要意义。     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Regulation of canonical Wnt/β-catenin pathway in the nucleus

Canonical Wnt/β-catenin pathway plays a central role in development, homeostasis, as well as tumorigenesis. The regulation of the pathway involves various and complicated mechanisms, including the extracellular, intracellular and endonuclear regulation. As the key component of the pathway, the Lefl/Tcfs-β-catenin complex is also the key target of regulation in the nucleus. In the current review, we are going to summarize the regulators in the nucleus which can modify the transcrip- tional activity of the Wnt/β-catenin pathway.     

建构中国古代文学审美理论:动因和方法

从提高“”的审美能力、“史”的认知能力、“论”的理解能力等方面阐述了建构中国古代学审美理论体系的动因，从注重古人创作和审美的实际、用今人的观点来透视、把定向观照和多向思维结合起来等方面探讨了建构这种理论的方法。目的在于使中国古代学理论的研究既有传统性又有现代性，既有本土性又有世界性。     

我国能源供需波动变化研究

本文从我国近20年来能源产业产品供需量和消费结构的状况着手,研究了能源供需量波动和消费结构变化的特性,并从产业政策、产业结构和经济增长方式演变的角度重点分析了供需量波动和消费结构变化的原因和特点,在此基础上,分析了我国近年能源短缺的原因和解决办法。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

不同碳氮源对嗜热菌BF80生长和降解苯酚的影响

探测了蛋白胨,酵母粉,葡萄糖对BF80菌生长和降解苯酚的影响．结果表明：与对照相比,0．05％-1％的蛋白胨能促进BF80的生长却抑制该菌的苯酚降解,这种作用随浓度的增加而增大;酵母粉对BF80生长和苯酚降解均有促进作用,在最适浓度0．1％的情况下其生长量OD600达到1．578,苯酚降解率上升到99．21％;不同浓度的葡萄糖对BF80的生长和苯酚降解几乎都没有影响．