集对分析理论及在最低成本工艺决策中的应用

基于集对分析的新原理与新思路,在介绍集对分析的基本概念和联系度的有关运算后,定义了机械加工工艺的生产费用的联系数μ=a+bi或μ=a+bi+cj.给出了工艺成本集对分析的方法与步骤,对机械加工工艺的生产费用进行了优化设计,得到了生产费用最低使用条件下的最优加工工艺路线与加工方法.给出算例.     

集对分析理论及在最低成本工艺决策中的应用

基于集对分析的新原理与新思路，在介绍集对分析的基本概念和联系度的有关运算后，定义了机械加工工艺的生产费用的联系数μ＝a bi或μ=a bi cj。给出了工艺成本集对分析的方法与步骤，对机械加工工艺的生产费用进行了优化设计，得到了生产费用最低使用条件下的最优加工工艺路线与加工方法。给出算例。     

集对分析在科研项目评价中的运用

利用集对分析的方法,把被评价的科研项目与评价指标组成一个集对,进行集对分析。找出两者间的联系,用联系度“u=a bi cj表示,排列出科研项目的优劣次序,为科研项目立项资助提供依据。     

基于集对分析的软件质量评价系统的构建

阐述了软件产品及其测评方式内在的不确定性，介绍了集对分析的基本理论，并建立了一种基于集对分析的软件质量评价体系．该体系通过确定软件评价对象集及评价指标集、确定权系数及确定各目标联系度μ，计算出各待评软件的综合评价结果．实例证明，基于集对分析理论的软件质量测评方法具有科学、准确、快速的特点．     

基于单元概率重要度的黄标车限行策略研究

基于城市道路网络系统可靠度理论,对郑州市区三环内的道路网络进行了基于蒙特卡罗的模拟分析.通过单元概率重要度的计算,确定重要度较大的路段集和区域,结合实践调查数据,提出相应的分阶段逐步实施黄标车限行的策略.     

基于集对逻辑的推理

集对分析是一种新的处理确定与不确定性互相联系，用联系数来描述系统联系与转化的同一度、差异度和对立度的不确定性的方法．利用集对分析，提出了集对逻辑推理，并讨论了集对逻辑推理的有关性质和运算．     

模糊测度理论在机械系统可靠性研究中的应用

根据模糊测度理论，分析了机械系统各种状态的模糊性，建立了模糊状态下系统可靠度的计算理论，克服了经典可靠性理论的不足之处，并就输油管道系统给出了应用实例。     

机器人机电一体化设计方法与应用研究——运动学及力学分析

对JZF防爆机器人进行了运动学、动力学和机械力学的分析研究,将机械系统结构参数和运动学参数(可计算与不可计算参数)与广义力(惯性力、弹性力、阻尼力)联系在一起,并通过振动实验模态识别方法求得不可计算参数.编制了仿真软件包,从系统的角度计算和优选驱动部件——执行元件和机械系统的结构参数,使机械参数与电控参数达到最佳匹配。     

模糊状态下机械系统的可靠性研究

本文分析了机械系统状态的模糊性，定义了系统的模糊状态、模糊状态转移、模糊事件等基本概念，建立了模糊状态下系统可靠度的计算理论，并就集装箱吊运机给出应用实例．     

起重机械制动器可靠度的不确定性分析

针对传统的可靠度分析方法只是简单计算可靠度值,无法分析可靠度的准确性和每种故障因素对设备可靠度的影响问题,提出故障树和信息熵法相结合的方法对制动装置可靠度的不确定性进行分析.同时利用方差重要度的方法计算每种故障因素对系统可靠度不确定性的影响,通过提高对系统可靠度不确定性影响大的故障因素的可靠度的准确性,以提高系统可靠度估计的准确性,为起重机械制动器的可靠性分析和安全性设计提供了借鉴和参考.     

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.     

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.     

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.     

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.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that