利用有限仿射几何的m-面构作结合方案和PBIB设计

取有限仿射几何AG(n,F_q)中的m-面(0相似文献   

颜填料对不饱和聚酯树脂及原子灰固化的影响

考察和比较了一系列的原子灰颜填料的作用和功能及对原子灰固化的影响，发现重晶石粉料对不饱和聚酯树腊及原子灰的固化有明显的影响。     

网络给思想政治教育工作带来的挑战与对策

当前，日益迅猛的网络对青少年学生的行为模式、价值取向、政治态度、心理发展、道德观念等已经产生越来越大的影响。如何在网络时代加强青少年的思想政治教育就成为一个亟待解决的重大课题。     

Quantification of the Atmospheric Corrosion of 304 and 2205 Stainless Steels Using Electrochemical Probes Based on Thevenin Electrochemical Equivalent Circuit Model

Stainless steel(SS) is one of the most widely used engineering materials in marine engineering. However, its corrosion in the marine atmospheric environment due to the high concentration of Cl~- is a problem. The SS corrosion is a threat to the development and security of marine industry; therefore, evaluating the corrosion resistance of SSs is necessary. In this work, atmospheric corrosion detection probes based on a symmetrical electrode system were used to study the corrosion behaviors of 304 SS and 2205 duplex stainless steel(DSS) in a simulated marine atmosphere. A theoretical model for electrochemical noise(EN) data analysis based on the Thevenin electrochemical equivalent circuit(EEC) model was established. The relationship between the EN characteristic parameters and the corrosion rate was obtained. The Thevenin EEC model analysis showed that the relationship between the noise resistance( R_n), the noise impedance [ R_(sn)(f)], and the impedance modulus(| Z( f)|) was R_n≈ R_(sn)=■. Thus, R_n and R_(sn) can be used as indicators for quantitative corrosion evaluation. The results of EN detection for the 304 SS and 2205 DSS showed that in a simulated marine atmospheric environment, the passive fi lms on the two SSs were relatively intact at the initial exposure stage, and their dissolution rates were slow. The corrosion resistance of the 2205 DSS was higher than that of the 304 SS. With the deposition of Cl~- on the SS surface, pitting was initiated and the dissolution rate increased. The pitting initiation process on the SS surface was random, and part of the active pores could be repassivated.     

试论《碧鸡漫志》的批评方法

《碧鸡漫志》作为宋代第一部系统的词学著作,在探讨词的起源时独树一帜,意义深远。在文学批评方法上,继承借鉴古人知人论世和分派列品的做法。这种批评方法为继承者所效仿,给后人开拓了道路。     

建立“五位一体”管理体系 提高实验室安全保障力度

为提高实验教学和科研的保障力度,逐步建立和完善了制度、责任、检查、教育、隐患处理"五位一体"实验室安全管理体系,并形成了长效机制,规范实验室安全管理,使实验室安全管理工作效率进一步提高。     

Moral education and values education in curriculum reform in China

In the new curriculum reform in China, moral education and values education have been defined from the angles of the integrity and conformity of curriculum functions. Accordingly, a new education concept based on complete/integral curriculum functions is established. By discussing the essences of the curriculum, the basis of moral and values education, integrated curriculum setting in instruction structure, the presence of emotional and attitudinal goals in the subject standards, and teaching methods, this text points out that this curriculum reform looks to moral and values education in schools. The reform also emphasizes and will guarantee moral and values education in schools. Finally, the article recommends to elementary and secondary schools the studies on moral education in class conducted by the Research Institute of Moral Education of Nanjing Normal University, one of the Key Bases for Humanities and Social Sciences Research for the Ministry of Education. __________ Translated from Global Education, 2002:12     

"预设"不可弱化--兼谈对课程改革的一点思考

近来读了一些文章,也参加过不少教研活动,有一个问题一直在头脑里打转:预设就那么不重要了?“生成”难道就不可以预设?如果大家都来探究预设生成,让我们对教学过程了如指掌,对教学结果成竹在胸,岂不是更好吗?为探讨上述问题,先向大家提供一个笔者的教学案例:     

武汉钢材流通业信息化三步战略

通过对2004年至2005年武汉4个主要钢材仓储货场的考察，结合武钢集团销售模式和钢铁物流的特点，剖析了货场运作中的弊病，并提出了三步走的改造方案。最后对武汉钢铁流通产业的未来格局作了分析展望。     

成人教育管理体制改革论

科学的管理体制是实施科学管理的前提和保证。建国以来，我国成人教育管理体制经历了长达40余年的“一级统管”阶段。从20世纪90年代起，开始了“两级管理，分类负责”的改革。然而截至目前，我国成人教育滞后于时代发展的要求。21世纪前期，我国应进一步深化成人教育管理体制改革。