正确处理好八大关系把广元市开发农业推向新阶段

近几年,广元市广大贫困地区兴起了一股强大的开发农业热潮.开发农业的兴起,为广元市农业的长足发展,增添了后劲.一是开发了资源,为农村经济起飞奠定了基础;二是增加了产品、提高了商品率,缓解了农副产品和工业原料短缺的压力;三是拓宽了农民致富的门路,增加了农民的收入;四是增强了商品意识,推进了技术进步,提高了劳动者素质;五是促进了工业、交通、能源建设,     

改进的遗传算法求解TSP

阐述了一种针对TSP问题的改进遗传算法。引入了局部优化搜索算法。加快了算法的收敛速度。减轻了初值对结果的影响。加入了改进的OX交叉算法,在交叉中合理保留了优秀个体基因的排列顺序。利用精英复制保留了优秀基因。维持了种群个体数目稳定。提出了一种新的变异算法,有效避免了路径重复,减小了运算量,提高了运算速度。     

母乳喂养的临床效果

1995年7月,我院创建了爱婴医院,实现了母婴同室,提倡了纯母乳喂养.经过2周年的实践,证实了实行母乳喂养降低了产妇乳腺炎的发生,避免了新生儿院内感染率,减少了产后大出血,缩短了新生儿生理性黄疸的时间,为此,这一属于全球性的活动得到了本地区产妇、家属和社会的支持.     

nRF905的LED屏无线通信设计与实现

针对采用芯片nRF905的LED屏无线通信,分别给出了上位机和下位机的系统框图,分析了系统的功耗,比较了无线模块和串口通信的通信速率,验证了系统的可行性,设计了串口通信协议,为保证数据质量,设计了数据通信协议,针对串口数据的nRF905分包转发,设计了无线芯片通信协议,例举了状态机的五种状态,介绍了状态间的转换条件,巧妙地编程设计了通信数据的定时器检查,论述了基于状态机的嵌入式单片机软件编程。     

城市供水风险分析与风险管理研究

从风险的一般定义出发,对城市供水风险进行了定义并分析了其内涵,给出了其函数表达式;对城市供水风险进行了分类并描述了其特征;在给出风险管理定义的基础上,阐述了城市供水风险管理的过程和方法,给出了供水保险的涵义,展望了供水保险的前景,并进行了供水保险框架设计.     

南华大学图书馆的津贴分配细则及其激励作用

阐述了南华大学图书馆在岗位津贴分配上遵循的指导思想和基本原则,介绍了岗位津贴档次的设置及其评定方法,指出细则的实施激发了工作人员的潜能,加强了工作人员的竞争意识,营造了学术氛围,盘活了人力资源,充分调动了工作人员的积极性。     

高效的绝缘监测技术研究

对高效的绝缘监测技术进行了研究,得出了应用在线监测技术可以实时地发现了一些被试设备绝缘缺陷,并及时采取措施加以防范,避免了停电事故的发生,保证了系统的安全运行,取得了一定的社会效益和经济效益,提高了电力设备的维护水平,减少了维护人员的劳动强度。     

基于比例方向阀的6自由度摇摆试验台精度控制方法研究

介绍了6自由度平台的控制方法,深入研究了比例方向阀的精度,介绍了比例方向阀的工作原理,对比例方向阀的静、动态特性进行了实验测试,并提出了对称阀控制非对称缸的控制方法.对平台运动轨迹规划进行了研究,提出了轨迹规划的方法,并进行了试验.     

关于“V(C)了”中的“了”

北京话“V(C)了”的“了”主要有两个,了_1是时态语气助词,了_2是动词“了”的轻读形式,作补语。补语了_2与结果·趋向补语相对当。了_2出现在句中,也出现在句尾,了_1只出现在句尾。句尾为了_2的,绝大多数句子表示的行为是未实现的,句尾为了_1的则相反。了_1融合着了_2,被融合的了_2在一定条件下与了_1分离而重现。以此为基础,可合理解释北京话里“没”和“了”在动词前后共存的语法现象。     

锚网、锚索、喷浆联合支护在松软煤层巷道掘进中的应用

锚网、锚索、喷浆联合支护技术的运用,改变了大水头煤矿煤巷掘进原始的工字钢棚支护手段,转变了人们对煤层掘进巷道的支护认识,增强了松软煤层巷道掘进期间的支护强度,提高了煤体巷道的坚固性,规范了正规循环施工工艺,实现了巷道掘进一次成巷,加快了巷道掘进速度,提高个人工效,同时降低了巷道掘进支护的消耗费用,减少了成巷的收敛变形量,大大降低了后期维修量,杜绝了煤层掘进巷道顶板事故,为大水头煤矿松软煤层巷道掘进提供了全面的技术保障。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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