浅谈如何做好群众工作

通过回顾党的历史上关于群众工作的一系列决策决定,指出领导干部要进一步提高对做好群众工作重要性的认识;对做好群众工作中领导干部的要求做出阐述。     

HPM合成及其在苯乙烯阳离子聚合体系中作用

通过利用与金属多氧络合物的相互作用,合成了具有特殊结构与功能的金属多氧络合物催化剂。经过红外表征,说明新合成的催化剂具有典型的金属多氧络合物晶体结构,同时其活性质子也得到了很好的稳定化保护。经过在苯乙烯体系中的聚合实验,发现合成的新型催化剂在引发聚合的同时,也能很好地实现聚合反应的稳定化,便于聚合操作的进行。     

A theoretical model for mid-and low-latitude ionospheric electric fields in realistic geomagnetic fields

The geomagnetic fields, which play important roles in the ionospheric dynamo, can greatly affect the global distribution of ionospheric electric fields, currents and other ionospheric electrodynamics phenomena. In the study of ionospheric electrodynamics phenomena, such as the longitudinal variations of ionospheric electric fields, the non-dipolar component of the geomagnetic fields must be taken into account. In this paper, we deduce a theoretical electric field model for ionospheric dynamo at mid- and low-latitude which adopt a modified magnetic apex coordinates system. In the new electric field model, the geomagnetic fields can be calculated from either the IGRF model or the dipole field model, and the neutral winds and conductivities are calculated based on empirical models. Then the dynamo equation for the electric potential is finally solved in terms of the line-by-line iteration method, and the ionospheric electric fields and currents are derived from the calculated potential. Our model can reproduce the main features of the ionospheric electrodynamics processes, so it will be a useful tool for the investigation of the upper atmosphere and ionosphere.     

北斗星斗柄指向考

该文通过文献考证，确认中国上古以北斗定时节的斗柄指向，有北斗七星和北斗九星两个标准，均作为初昏斗柄下指为冬至、上指为夏至的依据。北斗九星的斗柄指向，由第５、７、８、９诸星的连线、通过招摇、天锋，指向大火星，创建于４千年前的原始社会。北斗七星的斗柄指向，由第６、７两星连线的延长线，指向摄提和角、亢方向，形成于春秋、战国时期。     

关于点变差函数的某些性质

设ｆ（ｘ）为定义于区间Ⅰ（有限或无限）上的有限实函数。任给实数δ＞０，ｘ∈０，∈Ｉ，Ｖ＾Ｘ＋δＸ－δ（ｆ）表示ｆ（ｘ）在［ｘ－δ，ｘ＋δ］上之全变差。     

多雨季节混凝土工程施工质量控制方法

以深圳宝华科技大厦为工程实例，针对降雨对混凝土浇筑质量产生的影响，论述如何对混凝土浇筑进行事前控制、事中控制、事后控制、全过程质量控制的内容和方法。     

论运动量的安排

针对目前,大多数运动训练中,运动量安排上的不合理的状况,笔者在体操领域中进行了探索。通过对苏联、日本队夺得世界冠军前的训练的有关数据的统计,并结合自己的经验,进行了研究分析,在理论上提出了“训练的适应征象”。并得出了大运动量与成绩密切相关的结论。并且对训练的负荷密度、强度问题做了进一步阐述。     

A novel mechanism for jumping in the indian ant<Emphasis Type="Italic">Harpegnathos saltator</Emphasis> (Jerdon) (Formicidae,Ponerinae)

The Indian antHarpegnathos saltator may be unique among insects in using its jumping capacity not only as an escape mechanism but also as a normal means of locomotion, and for catching its prey in flight. High-speed cinematography used to analyse the various phases of the jump suggests thatHarpegnathos employs a novel jumping mechanism to mediate these behaviours: namely the synchronous activation of its middle and hindlegs. Electrophysiological recordings from muscles or nerves in pairs of middle and hindlegs show remarkably synchronous activity during fictive jumping, supporting the synchronous activation hypothesis.Harpegnathos is not the only ant to jump, and a cladistic analysis suggests that jumping behaviour evolved independently three times during ant evolutionary history.     

地理学的贫困与出路(Ⅱ)--地理学发展的分形方向

本文认为分形研究是未来地理学发展的主要方向。地理学研究对象的基本特征是差异性,差异性暗示了地理学的空间信息科学性质,而Ｓｈａｎｎｏｎ熵与Ｈａｕｓｄｏｒｆ维数等价,这表明分形维数可以作为地理系统信息分析的定量判据,故可借助分形几何学实现地理学的数量化;另外,运用分形模型进行地理系统的计算机模拟,可以弥补地理研究不可实验性的不足。地理学可望建立比较严格的逻辑体系。