HMLS工业丝生产工艺及其性能影响因素分析

基于工业丝切片特殊性能要求,根据目前对其研究的现状,对其生产工艺及其性能的影响因素进行分析,重点阐述了工业丝生产工艺对其性能的影响.     

基于ADAMS的牛头刨床运动仿真及优化设计

针对牛头刨床,建立其运动简图,利用运动学仿真软件ADAMS对其机构进行虚拟建模并对该机构进行运动仿真,揭示其运动规律.通过对杆件坐标点的参数化,并以增大其工作行程作为目标,对其机构进行优化设计.     

关于特殊C*-代数动力系统的拓扑熵

C*-代数动力系统自出现以来,由于其构造复杂,故对其研究甚少,当然对其拓扑熵的研究就更少了;对C*-代数动力系统作了较为特殊的构造,并对其拓扑熵进行了计算,得出了其拓扑熵或是0或是∞.     

浅析罗伯特·弗罗斯特的生平对其诗歌的影响

罗伯特·弗罗斯特的早期生活是在艰苦和失望中度过的,这也为其诗歌的创作提供了心理和思想的准备,也对其诗歌的创作产生了很深的影响。本文对弗罗斯特的生平作了简要的介绍,并摘取其诗来浅析其生平经历对其诗歌创作的影响。     

虚拟网络的发展是对辩证唯物主义新的论证

虚拟网络的迅速发展对马克思辩证唯物主义开始了新一轮的论证,也为其科学发展提供新的契机:是对其物质论的进一步论证;对其意识论的充实;对其认识论的深化。     

七七事变前蒋介石对抗战前途的矛盾态度评析

七七事变前,蒋介石对抗战前途的论调经常在消极和积极两个极端之间游移,其动机在于:应对抗战情绪高涨的形势;强化自身的统治地位;强调其抗战部署的重要性。蒋介石对抗战前途的矛盾态度体现了其对日思想的复杂性,因而不宜仅依据其一时的对日言论来简单地否定或肯定其抗战立场和民族立场。     

高速公路路基路面排水设计

高速公路与当代人们的出行息息相关,如何保证其质量、延长其使用寿命成为了我们关注的问题。对高速公路来说,其排水系统是对路面使用寿命和路基稳定性有显著影响的方面。因此,要想保证其质量、延长使用寿命,必须重视其排水设计,降低水对路基路面的侵蚀破坏。     

某新能源汽车制动踏板总成轻量化设计

为了校核某新能源汽车制动踏板总成的性能,首先基于Hypermesh软件建立其有限元模型。其次分别对其进行刚度性能分析、强度分析和疲劳分析。结果表明:其最大位移量小于目标值;其最大应力小于材料屈服;其本体及其焊缝的最大损伤值均小于1,三者的分析结果均能够满足设计要求。然后采用Isight集成平台对其进行轻量化设计,得到了其最优的厚度参数,分析结果表明:优化之后其各项性能也可以符合目标要求。最后对其优化方案进行实车试验,并且通过了整车道路验证。     

“拔身卑污,奋誉文苑”——自修成才的唐才子汪遵研究

晚唐诗人汪遵,因两唐书无传,以致后来诸方典籍对其的记载,呈现出纷争与混乱,连其姓、名、籍贯等一般简历的记录都参差不一;其现存的部分诗作,亦被张冠李戴地记在了别人名下。造成汪遵履历的真假难辨。在广搜文献资料基础上,沙中淘金,逐一驳讹返正,正本清源。对汪遵登料的年龄,予以钩沉;对其出生的年份,予以推定;对其诗歌的现存数目,予以梳理;对其特殊的精华"咏史"诗章,予以一一赏析。力争还原其完整的唐才子形象。同时坚守实事求是,对暂时无法辨明的史实,绝不妄加定论。     

解析刘师复及其思想

本文通过对刘师复个人经历的分析,探讨了其无政府主义思想来源,并对其思想进行了具体分析。这是一定历史条件下的产物,有其继承发展的渊源,也有其一定的历史地位和影响。     

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