陕西省信息服务业的发展研究

概述陕西省信息服务业发展现状，分析该产业在发展中存在的问题，提出发展陕西省信息服务业的若干战略。     

How can pre-service primary teachers' perspectives contribute to a pedagogy that problematises the ‘practical’ in teacher education?

This study examined pre-service primary teachers' perspectives on teaching and learning experiences within college-based courses in ‘practical’ subject areas within a teacher education programme. Following three individual lectures (one each in art, music and physical education), pre-service teachers (n=11) participated in focus group interviews sharing their perspectives on the teaching and learning experiences. These data were analysed thematically and supported by teacher educators' (n=3) planning and reflection documentation. Although the problematic nature of the ‘practical’ suggests appeal and peril of the ‘practical’, the important nature of negotiating the ‘practical’ to enhance student learning is apparent. Students emphasised the value of practical engagement and expressed a strong preference for working in groups to create a safe learning environment to develop confidence and competence. These insights suggest key aspects of a pedagogy of teacher education in these ‘practical’ areas. The importance of being aware of and, in some cases, challenging student perspectives on how they learn best in these curricular areas is discussed.     

Polarography

J Heyrovsky’s invention of polarography in which a dropping mercury electrode is used in the electrochemical cell revolutionised electroanalysis, study of electrode kinetics and adsorption studies on mercury electrodes. Polarography has also directly contributed to the development of new and innovative ideas in electrochemical techniques, instrumentation and applications     

网络环境下多元化指导型教学模式的构建

网络环境下多元化指导型教学模式是我们以毛泽东同志"矛盾论"和"实践论"理论、"学与教"理论、建构主义理论为理论基础,经过五年多的不断探索,并结合现代远程开放教育的规律和各专业与课程的特点,逐步提炼、升华形成的.本模式突出网络平台的应用,突出教师的导学,充分考虑学生的个体差异,注重对学生自主学习的引导和学习能力的培养.在模式实施的过程中,教师应充分考虑到学生学习策略的多元化差异,积极改造学生学习策略中的不合理因素,及时制订或调整教学目标与教学策略,采取最适合的教学手段完成导学任务,使学生不仅学习专业知识,还可以掌握现代信息技术,形成团体协作精神,逐步提高综合能力和素质,从而实现人才培养的目标.     

棉花施用惠满丰有机复混肥增产效应研究

在当季不施肥,皮棉产量50kg/667m~2以上的生产条件下,棉花施用惠满丰有机复混肥30-70kg/667m~2,伏前桃增加1-1.5个,株高增加9.9-17.1cm,茎粗增加0.2-0.8mm,有效果枝增加约1.3个,单株成铃数增多1.1-3.1个,单铃重约增加0.4-0.5g,霜前花率提高3-9个百分点,衣分、子指也有所提高,比对照增产皮棉14.1-31.8kg/667m~2,增幅27.4％-61.1％(平均45％)。在等养分量情况下,惠满丰有机复混肥肥效优于化肥。惠满丰有机复混肥的经济合理施肥量为70kg/667m~2。     

高等师范院校学生两项资助政策的研究

按国家有关政策的规定，师范生享受专业奖学金和免缴学杂费、住宅费的待遇。通过调查25个省、市、自治区的35所师范院校近几年执行上述两项资助政策的实际情况，提出改革现行资助政策的设想：收费政策与其他院校并轨；在学资助与职后资助并举，以职后资助为主。     

From natural numbers to numbers and curves in nature —I

The interconnection between number theory, algebra, geometry and calculus is shown through Fibonacci sequence, golden section and logarithmic spiral. In this two-part article, we discuss how simple growth models based on these entities may be used to explain numbers and curves abundantly found in nature     

《搜神记》“动物报恩”故事来源与演变

魏晋南北朝时期的志怪小说在佛教的影响下形成了一系列新的故事类型。《搜神记》中的＂动物报恩＂故事直接来源于佛经＂动物报恩＂故事,又接受了本民族文化的合理改造。它的产生受到佛教观念、本土朴素道德标准和传统财富、爵位观念的共同影响。     

试论企业集团产生和发展的动因

自20世纪80年代以来，我国学者对企业集团的理论建设进行了一些有益探讨，但是他们大都没有跳出科技的交易成本分析框架。交易成本分析实际上只是一种静态分析方法，仅能在既定条件下分析各商业交易主体的哪些商业交易应当选用企业集团内部市场来组织、哪些商业交易又应当选用企业外部市场来组织或企业内部市场来组织，但无法揭示在动态条件转产发展的深层原因，因而使用这一分析框架所得出的结论都不可避免地带有一定的局限性。如果将垄断和竞争因素以及专业化因素引入交易成本分析框架，就能较好地理解企业集团的产生和发展。