基于参数在线自调整的自适应模糊控制器研究

分析了模糊控制器的量化因子和比例因子对系统性能的影响，设计了一种自适应模糊控制器，能够在线调整其量化和比例因子以适应被控对象的变化，仿真结果表明该模糊控制器能获得较常规模糊控制器优良的控制效果．     

分层调整固子的模糊控制器

分析量化及比例因子对模糊控制性能的影响,设计一类分层调整量化及比例因子的模糊控制器。仿真结果表明,其控制效果优于常规模糊控制器。     

量化因子和比例因子对模糊控制器的影响及其修正

本文阐述了量化因子、比例因子的一般选择方法,详细分析了它们对模糊控制器控制性能的影响,并提出对量化因子、比例因子进行修正的方法,从而改善模糊控制器的控制性能。     

智能调整型模糊控制器的研究

在分析了不同的量化，比例因子对系统控制特性影响的基础上，提出了一种量化、比例因子智能调整式模糊控制器的算法，其中的上级模糊智能调整器能够根据系统的响应在线调整下级模糊控制器中的偏差、偏差变化率的量化因子的控制量的比例因子，下级模糊控制器利用这些因子并结合常规查表模糊控制算法完成对系统的实时控制。     

基于参数在线自调整的自适应模糊控制器研究

分析了模糊控制器的量化因子和比例因子对系统性能的影响，设计了一种自适应模糊控制器，能够在线调整其量化和比例因子以适应被对象的变化，仿真结果表明该模型控制器能获得常数规模控制器优良的控制效果。     

比例因子对模糊控制器动态性能的影响

影响模糊控制器动态性能的因素有多方面 ,如模糊控制规则、模糊推理和模糊判决方法等 ,其中比例因子 (量化因子 )对其动态性能有较大的影响 为了探讨各因子的影响 ,通过Matlab仿真语言对由二阶被控对象构成的模糊控制系统进行了仿真研究 方法是预先选定一组理想的参数 (包括被控对象参数和比例因子 ) ,分别改变比例因子 ,观察系统在阶跃信号作用下的响应 最后根据实验结果得出 :三个比例因子对模糊控制器动态性能的影响各不相同 同时提出了模糊控制器设计过程中比例因子的选择原则及注意事项     

冶炼厂烧结原料水分的论域自调整模糊控制

设计了冶炼厂烧结原料水分控制的论域自调整模糊控制器,使系统通过不断的平滑调节论域范围和量化因子及比例因子,实现在系统处于死区时量化因子显著增加,使控制器的输出摆脱死区范围和细化控制等级,在系统偏差大时能快速调节输出。     

比例因子的选择对模糊控制器鲁棒性的影响

分析了比例因子与系统性能的关系,通过仿真实验研究了比例因子对模糊控制器鲁棒性的影响．实验结果表明,合理选择模糊控制器的比例因子能保证在被控对象的参数变化较大的情况下满足设计要求．在此基础上,提出了模糊控制器的设计和调整的指导性方法．     

比例因子对模糊控制器动态性能的影响

影响模糊0控制器动态性能的因素有多方面，如模糊控制规则、模糊推理和模糊判决方法等，其中比例因子（量化因子）对其动态性能有较大的影响。为了探讨各因子的影响，通过Matlab仿真语言对由二阶被控对象构成的模糊控制系统进行了仿真研究。方法是预先选定一组理想的参数（包括被控对象参数和比例因子），分别改变比例因子，观察系统在阶跃信号作用下的响应。最后根据实验结果得出：三个比例因子对模糊控制器动态性能的影响各不相同。同时提出了模糊控制器设计过程中比例因子的选择原则及注意事项。     

模糊控制器量化因子的在线优化

本文利用遗传算法与模糊控制相结合优化模糊控制器量化因子的设计方法,能够有效提高模糊控制器量化因子选取的效率及其控制效果,本文通过在基于矢量控制的交流电机调速系统速度环模糊控制器上应用遗传算法进行量化因子优化的仿真实验,验证了此设计方法的有效性与优越性。     

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.     

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.     

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.     

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

A computer generator for randomly layered structures

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

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-