无穷多个函数的随机动力系统

本文考虑无穷多个函数的随机动力系统，并研究这种动力系统的动力学性质。     

整函数Julia集的维数

定义了整函数的双曲维数、径向Julia集、临界维数以及动力系统维数等概念,并建立了整函数的不同维数的大小关系.     

粘弹性柱的动力性质

主要讨论由粘弹性柱所定义的动力系统的动力学行为。首先构造了动力系统的Ｌｙａｐｕｎｏｖ函数，利用Ｑ阶单步方法将原系统化为离散动力系统。证明了离散动力系统地拥有一个吸引Ａ（ｈ），并且在ｈ→０＾＋时，Ａ（ｈ）→。最后利用得到的结果给出了粘弹性柱的稳定控制。     

一些整函数的迭代性质与3n+1问题之间的关系

给出了3n+1猜想在复解析动力系统中的一个等价形式,并找到了一个3n+1函数(数列)的性质较好的插值整函数.     

Backer问题的─肯定回答(英文)

设f和g是超越整函数，J（f）和J（g）分别表示f和g的Julia集，对有限型超越整函数f和g，J（f）＝J（g），进一步证明了f与g的动力学本质是相同的．     

Backer问题的一肯定回答

设ｆ和ｇ是超越整函数，Ｊ（ｆ）和Ｊ（ｇ）分别表示ｆ和ｇ的Ｊｕｌｉａ集，对有限型超越整函数ｆ和ｇ，Ｊ（ｆ）＝Ｊ（ｇ）进一步证明了ｆ与ｇ的动力学本质是相同的。     

粘弹性柱的若干动力学性质—数值实验

主要讨论了粘弹性柱所定义的动力系统的动力学行为，首先利用Ｌｙａｐｕｎｏｖ指数，Ｌｙａｐｕｎｏｖ谱分析了动力系统的各种动力学性质，说明了动力系统在各种参数条件下的动力稳定性以及在特定参数下拥有一个一致渐进稳定的吸引子Ａ，同时数值试验表明动力系统矍有混沌的特征。     

ISG型速度耦合混合动力系统全局最优控制方法

混合动力系统具有节能和环保优势,为了提高混合动力系统的燃油经济性,结合ISG(integrated starter generator)型速度耦合混合动力系统的结构,构建了系统动力学模型。利用动态规划方法,设计了以发动机节气门开度和电机转矩为控制变量,以发动机转速和电池SOC等为状态变量,以整个循环发动机燃油消耗最低为目标函数,电池SOC维持平衡和限制频繁换挡为附加代价函数的动态规划算法。仿真结果表明:与传统的基础车型相比,混合动力系统燃油经济性提高了35.5%。     

一个迭代函数系统的分形混沌特性及其应用

介绍迭代函数系统生成分形的原理以及分形位移动力系统的混沌特性.构造了一个迭代函数系统，用于生成充满整个单位正方形的填充曲线，理论上证明该迭代函数系统的分形位移动力系统的Devaney混沌特性.将该迭代函数系统的分形位移动力系统参数化，数值上验证该分形位移动力系统的混沌性能，并使用该混沌系统设计了一个基于DNA运算的混沌图像加密算法，详细分析了该加密算法的安全性.     

动态域上不连续动力系统的理论及方法

本文是关于动态域上不连续动力系统理论进展的一个综述.笔者给出了具边界转换的不连续动力系统和具时间切换的不连续动力系统的基本概念;提出了不连续动力系统的两个特征:其一是所考虑的不连续动力系统具有随时间变化的定义域.其二是所考虑的不连续动力系统具有关于边界或切换时刻的不连续性.由此自然提出了关于动态域上不连续动力系统的动力学问题,包括流的奇异性规律、周期运动特性、转换分支性态及复杂动力学等.笔者着重介绍了近年逐渐形成的动态域上不连续动力系统理论(2005年由Luo A C J提出):首先纵览不连续动力系统研究所经历的三次发展浪潮,致力于展现该理论形成的历史过程;接着勾画出该理论的基本架构,即以不连续动力系统流转换理论和映射动力学为基本内容,并由其自然派生拓展出不连续动力系统转换分支理论、流障碍理论、多值向量场理论等.动态域上不连续动力系统理论的关键之处在于:受物理能量层启发,针对不连续动力系统动边界提出了"G函数"的核心概念.G函数实质上是借助极限工具在动边界任一点局部给出一种度量方法,从而使得精细研究动态边界上流的转换成为可能.本文还介绍了关于不连续动力系统研究的一些新进展.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

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

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.