S7-200与WinCC软件在实验室水槽装置上的应用

提出基于西门子S7-200系列PLC和WinCC软件在水槽装置实验室构建计算机控制系统的思路,使水槽装置实验室改变了用研华采集板采集数据的传统试验模式。介绍水槽装置的运行原理,阐述了S7-200PLC和WinCC软件在水槽装置上设计计算机控制系统的过程。实验证明,西门子S7-200系列PLC和WinCC软件能很好地实现对水槽装置的控制,是学生学习并掌握PLC应用技术的良好平台。     

动词重现紧缩句“V1也V1P”的不对称现象分析

动词重现紧缩句是汉语中具有独特价值的句法结构。在考察“V1也V1P”的肯定形式和否定形式的不对称现象、结构中后现动词带宾语与带状语、补语的不对称现象的基础上。从认知角度解释不对称性;分析与结构相关的标记模式及“V1也V1P”结构不对称的显著性。为进一步研究动词重现紧缩句奠定了基础。     

Anisotropic Open Cosmological Models of Spin Matter with Magnetic Moment

We have derived a set of field equations for a Weyssenhoff spin fluid including magnetic interacton among the spinning particles prevailling in spatially homogeneous,but anisotropically cosmological models of Bianchi type V based on Einstein-Cartan theory.We analyze the field equations in three different equations of states specified by p=1(1/3)ρand p=0,The analytical solutions found are non-singular provided that the combined energy arising from matter spin and magnetic interaction among particles overcomes the anisotropy energy in the Universe,We have also deduced that the minimum particle numers for the radiation(p=(1/3)ρ) and matter(p=0) epochs are 10^88 and 10^108 respectively.the minimum particle number for the state p=ρ is 10^96,leading to the conclusion that we must consider the existence of neutrinos and other creation of particles and anti-particles under torsion and strong gravitational field in the early Universe.     

试说"-V/V"式

本考察了“-V／V”式的各个构成成分的句法和语义特点;探讨了该句式在语法分布上的特点,即该句式一般只出现于肯定句和表示肯定的反问句中而不出现于否定句中;研究了该句式在语用表达上的作用,着力解释了动词后成分所具有的超乎寻常性及其形成的原因。     

论《屈赋》中的几种动宾关系

:《屈赋》中除支配与被支配以外的几种动宾关系 ,即通常所说的使动、意动、处动、为动、对动、被动等 ,是古汉语中常见的一些语法现象 ,熟练地掌握和运用它 ,阅读古籍中遇到的许多疑难便能迎刃而解     

单片机A/D转换接口的两种实现方法

本文论述了用V/F变换器和VCO压控振荡器与单片机接口进行A/D转换的方法,并给出了硬件电路和转换程序.这种方法简化了硬件结构,提高了A/D转换精度,有较强的实用性.     

汽车电气系统采用高电压供电方案的可行性论证

介绍了汽车使用42V电源供电的优点和发展趋势,分析了汽车42V电源的电气系统的结构特点,并提出了采用高电压供电的两种解决方案。虽然汽车业完全采用和实现42V电源技术会遇到许多困难,但是汽车电源技术由传统的14V标准向42V转化已经成为汽车工业发展的必然趋势。     

世界优秀男子200m跑运动员速度分配特征的新视角分析

运用统计学的相关研究方法,对世界优秀男子200m跑运动员的各分段50m成绩与总成绩进行分析。揭示各分段50m与200m成绩之间的相关关系和当今世界优秀男子200跑运动员速度分配的基本特征,为提高我国男子200m跑运动成绩提供科学借鉴。     

The Special Collection Fond of the Presidents of Ukraine as an Integrated Informational Resource for Research on the Institution of the Presidency

ABSTRACT

The article describes the functions of the special collection Fond of the Presidents of Ukraine (FPU) within the V. I. Vernadsky National Library of Ukraine, as well as the history of its formation, purpose, activities, and operational features. It emphasizes that the main characteristics of the institution are not only collecting and using various types of documents, but also research and informational-analytical work to popularize them among citizens and authorities. Unlike the US presidential libraries, in Ukraine the conception of the FPU envisages it as an integrated documentary and informational-analytical center to collect heritage materials and study the institution of the presidency as a whole. FPU also provides operative scholarly and informational resources to government officials, to the scholarly community, to the broad student community, and to society in general through the Internet portal of the V. I. Vernadsky National Library of Ukraine and social networks.     

索洛维约夫美学文艺学思想及其影响

索洛雏约夫是19世纪俄罗斯思想最后一位集大成者，也是白银时代第一住开风气之先的大思想家。他的美学文艺学思想对于俄国新宗教意识运动和俄国象征派，尤其是青年象征派诗歌创作理论和实践有着决定性的影响。理解索洛雏约夫思想对于理解整个白银时代俄国美学文艺学思想，具有关键的指导意义。