面向绿色制造的工艺种类选择模型及应用

绿色制造工艺规划是实施绿色制造的关键环节,而绿色工艺种类的选择是绿色制造工艺规划的首要内容.在分析了面向绿色制造工艺种类选择的时间、质量、成本、资源消耗和环境影响等5个决策目标的基础上,提出了面向绿色制造的工艺种类选择应遵循的一般性原则,建立了面向绿色制造工艺种类选择的多目标决策数学模型,并应用模糊加权系统方法对模型进行求解.最后,通过某零件毛坯砂型铸造成型工艺种类的选择实例,说明了绿色工艺种类的选择过程.实例分析与求解结果验证了该模型及其求解算法的可行性和实用性.图1,表2,参9.     

面向绿色制造的金属表面热处理工艺规划决策问题研究

在对金属表面热处理工艺的资源环境特性和加工时间、加工质量、加工成本、资源消耗、环境影响5个绿色制造目标特性分析的基础上，对面向绿色制造的表面热处理工艺中的决策问题进行了研究，并结合某工件表面热处理加工中的热处理设备选择问题进行了案例分析。     

绿色制造工艺规划的一种模型辅助决策技术

从数学角度出发，建立了有关绿色制造工艺规划具体问题的决策总模型及其分解子模型，提炼出了关于绿色制造工艺规划问题的一种新技术，分析了该技术的实质、模型选择原则和模型解法，并结合实例开发了辅助决策模型库应用系统。     

面向机械加工工艺规划的绿色制造技术探析

绿色制造技术是符合现代环保意识与资源效益的新型制造模式。在保证产品的功能、质量、成本的前提下,绿色制造工艺对机械加工工艺的优化将体现在环境保护、资源利用率等方面。本文对绿色制造技术进行细化分析,将传统机械加工工艺规划与绿色制造技术进行对比,简述绿色加工工艺技术,对绿色制造技术进行探析。     

化学合成的选择与绿色评价

提出了化学合成工艺的选择和绿色评价问题。概述了原子利用率、合成效率和目标产品效率作为化学合成工艺的绿色评价指标。化学合成实例分析的结果表明,在原子利用率、合成效率和目标产品效率3个评价指标中,采用目标产品效率最科学。     

面向绿色制造的刀具选择决策模型及其应用

刀具的合理选择是提高切削加工绿色性能的重要途径之一。绿色制造是解决当前制造业日益严峻的环境问题的新模式。基于绿色制造的思想，建立了一种集时间（T）、质量（Q）、成本（C）、能源消耗（R）、环境影响（E）等五大决策目标的面向制造的刀具的优化决策模型及其多目标评价指标体系和以及模型约束条件。采用模糊聚类综合评价方法，对上述模型进行求解。结合一个齿轮加工过程中面向绿色制造的滚分选用针对不同材料的刀具进行决策的切削性能研究的实例，对该决策模型的应用和求解过程进行了说明。     

绿色产品制造工艺评价体系与方法研究

通过对影响产品制造工艺因素的分析，从资源利用属性，能源利用属性，环境负担和经济性等几个方面建立了绿色产品制造工艺评价体系的层次结构图，并应用加性加权法首先排除绿色产品制造工艺方案集中的劣解，对绿色产品制造工艺方案进行规范化处理和采用和法求得权向量，最后确定绿色产品制造工艺的最优解，在此基础上应用实例求绿色产品多个制造工艺方案的最优解，并通过验证是可行的。     

基于绿色制造的冲压加工工艺决策技术的研究

对冲压加工中的资源耗损和环境影响这两个绿色特性进行分析并提出了改进措施，根据对这两个绿色特性的分析建立了面向绿色制造的冲压加工工艺决策模型，并结合某企业压力机设备选择问题对该决策模型进行了验证。     

绿色制造模式下供应商的评价与选择方法及软件实现

为了对绿色制造模式下的供应商进行系统科学地评价和选择,从质量、成本、交货能力、技术能力、服务和环境6个方面构建了供应商的评价指标体系,运用属性层次模型确立了各指标的权重。根据属性层次模型原理利用Delphi软件开发了一套SES(Supplier Evaluation&Selection)系统,对供应商的选择进行了实证分析评价。分析结果表明:属性层次模型方法对于绿色制造模式下供应商的选择有较好的适用性。     

基于多维关联函数的调整工艺选择

 为解决快速扩散制造中工艺调整方案的选择问题, 分析工艺调整对扩散制造产生的多种影响, 通过关系矩阵和基于实例搜索的方法定量计算影响值;在主制企业对影响值提出的约束基础上, 采用多维关联函数的方法, 通过点位置判断和降维计算等过程计算得到符合影响约束范围内调整工艺;以某型叶片的调整工艺方案选择分析为例, 计算得到主制企业期望的工艺方案, 验证了本方法的适用性和可行性。     

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.     

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