广义不确定性系统概念及其基本原理

给出了包含自然系统和人为系统的复合系统定义．以及确定性系统、不确定性系统的定义．论述了随机系统、模糊系统、粗糙系统、灰色系统、未确知系统、泛灰系统的内涵;进而引入了广义不确定性系统的概念,它涵盖了复合系统和广义泛灰系统．论述了广义不确定性系统的7个基本原理：给出了广义不确定性系统的基本结构,为综合研究客观存在的各类系统奠定了理论基础．     

建筑漏电火灾报警系统安装与调试分析

文章结合漏电火灾报警系统系统的组成与功能,简单介绍了漏电火灾报警系统与火灾自动报警系统的区别,突出了漏电火灾报警系统系统的优势,着重分析了该系统在现场施工中时的安装工艺的注意事项,重视系统的调试运行。     

整数阶混沌系统与分数阶半导体激光器系统的同步

为利用混沌同步提高通讯系统的安全性,以一个三维整数阶混沌系统作为驱动系统、分数阶半导体激光器系统作为响应系统,研究了二者之间的混沌同步.分析了2个系统的混沌行为,给出了不同相平面上系统的混沌吸引子;基于分数阶系统稳定性理论,为系统设计了合适的反馈同步控制器,实现了系统间的混沌同步;数值仿真验证了所设计控制器的有效性.     

基于工作流图的办公自动化系统的设计和实现

传统的系统需求分析方法有数据流图法等 ,但对于基于工作流的系统如办公自动化系统并不适合 笔者运用工作流图法对办公自动化系统进行需求分析 ,明确了系统需求 ,接着给出了系统的功能模块设计 ,并研究了基于LotusDomino/Notes的系统解决方案和系统实现技术 ,最后应用于镇江市经委OA系统的建设中 ,开发出相关的应用软件 ,为办公自动化系统提供了一种新的实施方法     

汽车转向系统发展简述

本文综述了汽车助力转向系统的发展,包括传统机械转向系统,液压助力转向系统,电液助力转向系统和下一代线控电动转向系统。阐述了汽车转向系统发展的状况,指出了各种转向系统的结构特点、工作原理及优缺点,并展望了汽车线控转向系统未来的发展方向。     

物联网实训系统建设探析

文中探讨了物联网实训系统的建设问题。介绍了物联网实训系统的发展现状,分析了现有系统存在的不足,讨论了该系统所应具备的基本功能,提出了组成物联网实训系统的软硬件模块构成。最后,介绍了物联网实训系统建设的初步研究成果。     

塔山选煤厂煤泥系统灵活性的研究与应用

针对塔山选煤厂煤泥系统灵活性不足的情况,对塔山选煤厂煤泥水系统出现问题的原因进行了研究与分析,并对塔山选煤厂煤泥系统的加药系统做了改造,增加了二次加药系统,改变了系统的工艺参数,增强了选煤厂煤泥水系统的灵活性和适应性,彻底解决了塔山选煤厂因煤泥水系统灵活性不足出现的煤泥处理滞后问题。     

一个新的统一混沌系统及其同步控制

构建了一个不同于统一混沌系统的新型广义混沌系统,其重要特点是调节系统参数b,可实现从广义Lorenz系统到广义Lü系统再到广义Chen系统的切换。分析了新系统的动力学特性,给出了系统的相图、功率谱、Poincare映射、Lyapunov指数谱以及分岔图。设计了系统的切换电路,并用Multisim软件进行了电路仿真。仿真结果与数值分析相符,进一步验证了系统的混沌特性。基于Lyapunov稳定性理论及自适应控制方法,构建了广义Lü系统的自适应滑膜控制器,完成了对位置信号的追踪控制与未知参数的辨识;设计了广义Lorenz系统和广义Chen系统的异结构同步控制器,仿真结果表明,控制参数k越大,系统同步速度越快; 控制参数λ越大,系统参数识别的速度越快。     

用电信息采集系统简述

简要介绍了用电信息采集系统的系统架构、系统功能及其工作模式,阐述了用电采集系统建设与运行情况,探讨了用电采集系统存在的问题,提出了处理措施,并展望了用电信息采集系统的发展方向。     

一类非线性系统状态观测器的构造

讨论了一类非线性系统观测器的构造方法 .对仿射非线性系统观测器的条件进行了讨论 ,给出了必要的假设 ,得到与原系统微分同胚的系统 (简称同胚系统 ) ,并保持仿射性不变 .对同胚系统观测器给出了适当定义 ,它表现为一个模型系统 ,并根据其输出与同胚系统输出间的误差进行修正 .给出并论证了同胚系统状态观测器的构造方法 ,其关键是选择与模型系统和同胚系统间输出误差有关的增益矩阵 .对原系统 ,只要寻求与同胚系统间的一个适当变换 ,即可实现原系统的状态观测器 .参 6 .     

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.