煤矿主通风机在线监控与故障诊断系统的应用研究

介绍了煤矿主通风机的特点，然后介绍了主通风机在线监控与故障诊断系统的系统构架、仿真系统模拟和功能设计方案，运用仿真系统可以对煤矿主通风机通风系统进行仿真模拟，以此分析和论证通风系统改造技术方案，同时可以得出改造后的通风效果。     

供热空调系统方案的多目标综合评价研究

分析了6种供热空调系统方案在3种不同运行情况下的一次能源利用率PER，得出燃气热泵的PER最高．但在供热空调系统可行方案的优选中，方案的选择受多种因素影响，其中许多不能量化的指标常被忽略，决策时产生偏差。利用多目标决策的方法，对多目标系统进行优选，从环境因素、成本因素和性能因素等方面对6种采暖空调系统方案进行综合评价研究，给出了方案选择的指导性意见，提高了方案决策的合理性和科学性．     

容灾系统的建设方案研究

主要依据容灾系统的建设条件和级别定义，讨论了建设容灾系统的原则，并对数据级容灾系统和应用级容灾系统的建设方案进行了分析和对比，同时还结合业界一些容灾技术进行了案例分析，最后对移动业务运营支撑系统的容灾提出了建设性的方案。      

黄河防汛数据库灾难备份方案研究

本文对山东黄河数据备份的现状和问题做了简要总结，分析了数据灾备系统建设的必要性，做了多种方案的比较选型，确定了系统建设的方案。     

无中心控制多信道选址通信系统的组网研究

研究了民用无中心控制多信道选址通信系统，针对其控制信道固定所引起的缺点，提出了改进方案，变控制信道固定为控制信道可灵活选择，以提高其保密性，并提出了相应的信令格式和网络初始化、自组织和自恢复的组网方案．本改进方案主要基于软件设计，目的在于使原来通信系统设备基本保持不变的情况下，提高系统的效率，增加保密通信的性能．计算机模拟结果证明，本方案初始化时间短，控制信道隐蔽性好，网络拓扑变化自适应、自组织、自恢复能力强，充分证明了该方案在技术上和经济上的合理性和可行性．     

微波反射式识别系统的性能分析和实验

提出了一种微波反射式识别系统的实现方案，介绍了该系统的射频电路工作原理，分析了ASK反射调制方式和PSK反射调制方式对系统性能的影响，同时也探讨了系统在移动环境下的适应性，导出了该系统工作距离的理论估算公式。最后，介绍了该方案的实验情况，实验系统能在反射卡运动速度达到65km/h的情况下稳定工作，说明本文的方案具有很好的移动性能，在非移动环境下，实验系统的最长有效工作距离达到8m，有力地证明了该系统方案具有远距离应用的潜力。     

基于设备环境模型的多工艺方案决策

根据ＣＡＰＰ系统的需求，建立了基于特征的设备环境模型．详细分析了多工艺方案存在的原因，对基于设备环境模型的多工艺方案决策方法进行了分析和讨论，并提出实现步骤．在此基础上，建立了基于设备环境模型的多工艺方案决策系统     

一般访问结构上的多秘密共享方案

为扩展多秘密共享的应用范围，基于Shamir的门限秘密共享方案，提出了一般访问结构上的多秘密共享方案．该方案与现有方案不同的是：一次秘密共享过程可以同时共享任意多个秘密；系统中各个参与者的秘密份额可以重用，其长度等于一个秘密的长度．分析表明，与现有方案相比，该方案降低了秘密分发算法和秘密重构算法的计算复杂度，实现了多个秘密的共享，提高了系统性能．     

汽车悬挂系统参数分析

针对汽车悬挂系统的结构，分析了二阶系统的阶跃响应和（正弦）频率响应模型，根据所建模型，计算出每个备选方案的参数，运用MathCAD进行仿真，比较不同的弹簧常数和减震阻尼常数下的系统阶跃响应和频率响应特性，选择最佳方案．     

多载波系统中基于镶嵌算法的载频间干扰消除方案

为消除正交频分复用(OFDM)系统中的载波间干扰，在对干扰系数分析与合理估计的基础上，提出了一种基于频域均衡思想的解相关干扰抑制方案．通过干扰矩阵的循环镶嵌算法来消除载频间干扰，抑制系统中的地板效应．与传统的频域均衡方法相比，该方案省去了迭代运算与信道矩阵的求逆运算，计算简便，具有稳定的收敛性，并且适用于无线多径信道和高速移动的环境．仿真结果表明：在系统归一化频偏为0．2时，该方案的系统信干比比标准的OFDM系统提高了32dB，比干扰自消除方案提高了5dB；在系统误码率为101时，该方案的信噪比比干扰自消除方案提高了2～3dB。     

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