虚拟资本及其与实际资本关系探析

随着市场经济的发展，虚拟资本在经济中的地位与作用越来越重要，虚拟资本有两种主要形态，即以商业票据等存在实物对应的虚拟资本和与实际资本相距较远的投机性强的虚拟资本，虚拟资本的基本特性表现为投机性，虚拟资本运动具有独立性并从两个方面影响实际资本运动，从发展的角度讲，虚拟资本与社会总资本的关系更加密切。     

Fractions as the Coordination of Multiplicatively Related Quantities: A Cross-Sectional Study of Children's Thinking

Although equal sharing problems appear to support the development of fractions as multiplicative structures, very little work has examined how children's informal solutions reflect this possibility. The primary goal of this study was to analyze children's coordination of two quantities (number of people sharing and number of things being shared) in their solutions to equal sharing problems and to see to what extent this coordination was multiplicative. A secondary goal was to document children's solutions for equal sharing problems in which the quantities had a common factor (other than 1). Data consisted of problem-solving interviews with students in 1st, 3rd, 4th, and 5th grades (n=112). We found two major categories of strategies: (a) Parts Quantities strategies and (b) Ratio Quantities strategies. Parts quantities involved children's partitions of continuous units expressed in terms of the number of pieces that would be created. Ratio quantities involved children's creation of associated sets of discrete quantities. Within these strategies, children drew upon a range of relationships among fractions, ratio, multiplication, and division to mentally or physically manipulate quantities of sharers and things to produce exhaustive and equal partitions of the items. Additionally, we observed that problems that included number combinations with common factors elicited a wider range of whole-number knowledge and operations in children's strategies and therefore appeared to support richer interconnections than problems with relatively prime or more basic number combinations.     

国内外高校联盟发展的比较研究

本文详细介绍了国内外高等院校联盟的发展历程,建模完成了高等院校联盟的优劣势分 析,对澳大利亚八校联盟和中国C9 高校联盟的发展情况进行了比较研究。最终提出高等院校联盟 的发展模式是未来高等教育发展的一个重要方向,我国应在完成高等教育联盟体系的优势布局后, 建设国际层面的联盟合作体系,实现高等教育事业的高位均衡发展。     

在高校辅导员工作中贯彻落实"八荣八耻"的社会主义荣辱观

贯彻落实"八荣八耻"的社会主义荣辱观,为学校思想政治工作和德育工作指明了方向,文章初步探讨在高校辅导员工作中贯彻落实"八荣八耻"为主要内容的社会主义荣辱观的必要性和途径。     

从内部优化到全局协同：模块化生产网络构建策略研究

在全球化价值链驱动下,产业的分工格局进一步细化,企业为了平衡生产成本、促进产业链知识共享和资源整合,就必须构建更为有效的生产网络。文章首先分析了模块化生产网络的特征,探讨了基于模块化产品架构来构建模块化生产网络的基本策略。其次,提出了结合模块的特性来优化模块化生产线布局的方案,其中包括稳定的主线配置和动态模块自制和外购策略切换等。在此基础上,构建了模块化生产网络模型,阐述了以企业为核心并嵌入模块供应商、代工厂等外部资源进行研产销全局协同的思路。最后,结合海尔集团公司的模块化生产实际案例说明本文提出理论方法的适用性。     

环境模块课程教学实践

为了配合新形式下高等教育改革的要求,思茅师范高等专科学校生命科学系化学教育专业的课程设置进行改革,采用必修课加模块选修课的模式教学。对化学教育专业开设环境模块课的教学实践进行分析和总结,提出改进建议,以期促进教学改革。     

三元固体配合物[Sm（C9H6NO）2（C6H5COO）]·H2O的标准摩尔生成焓

按照文献合成了三元固体配合物[Sm（C9H6NO）2（C6H5COO）]·H2O通过红外光谱进行表征．利用Hess定理设计了配位反应的热化学循环,并在常压298．15K下,分别测定了六水氯化钐、苯甲酸、8-羟基喹啉以及配合物在混合溶剂中的溶解焓,根据热化学原理求出了298．15K时,配位反应的反应焓;并进一步计算出了[Sm（C9H6NO）2（C6H5COO）]·H2O三元固体配合物的标准摩尔生成焓．     

不同区域脑组织对运动诱导氧化应激和DNA损伤的反应

目的:观察8周规律游泳运动对脑组织不同区域的氧化应激体系和DNA损伤的影响。方法:符合实验条件的24只雄性SD大鼠随机分为两组:安静组、递增负荷8周规律游泳组。采用免疫组化染色和生物化学检测方法,观察8周规律游泳运动对脑组织不同区域丙二醛(MDA)含量和谷胱甘肽过氧化物酶(GSH-PX)活性以及8-羟基-2’-脱氧鸟苷(8-OHdG)表达情况的影响。结果:8周规律游泳可以使大鼠海马组织的GSH-PX活性增加,同时MDA含量降低(p<0.05);但皮层GSH-PX活性及MDA含量与安静组相比无统计学意义;DNA损伤的产物8-OHdG表达在皮层和海马组织中与安静组之间无差别。结论:规律游泳运动可增加海马组织GSH-PX活性,对皮层GSH-PX活性无影响;运动对皮层和海马组织GSH-PX活性的影响不同,但并没有增加皮层的DNA损伤,可能是氧化应激过程中不同脑区的调节机制不同。     

185nm紫外光/氧化协同降解水体中微量三氯甲烷的研究

文章研究了185nm紫外光/氧化协同降解水体中微量三氯甲烷的降解情况,考察了溶液浓度、光解时间、溶液pH值以及加入氧化剂等对降解三氯甲烷的影响,研究结果表明,CHCl3的脱氯基本是由185nm紫外光引起;其脱氯率几乎不受pH值的影响;在近中性条件下,5mg.L-1的三氯甲烷水溶液的CODMn去除率、脱氯率均与光解时间呈指数上升;光解5min后,CODMn去除率可达50%左右,脱氯率则小于30%;CHCl3的解离主要是185nm光子的作用,而与其它氧化性物质无关。     

ISSR markers based on GA and AG repeats reveal genetic relationship among rice varieties tolerant to drought, flood, or salinity

Drought,flood,salinity,or a combination of these limits rice production.Several rice varieties are well known for their tolerance to specific abiotic stresses.We determined genetic relationship among 12 rice varieties including 9 tolerant to drought,flood,or salinity using inter-simple sequence repeat (ISSR) markers.Based on all markers,the nine tolerant varieties formed one cluster distinct from the cluster of three control varieties.The salt-tolerant varieties were closest to two flood-tolerant varieties,and together they were distinct from the drought-tolerant varieties.(GA)8 YG was the most informative primer,showing the highest polymorphic information content (PIC) and resolving power (Rp).The drought-,flood-,and salt-tolerant varieties grouped in three distinct clusters within the group of tolerant varieties,when (GA)8 YG was used.Sabita was the only exception.The two aus varieties,Nagina22 and FR13A,were separated and grouped with the drought-and flood-tolerant varieties,respectively,but they were together in dendrograms based on other primers.The results show that ISSR markers associated with (GA)8 YG delineated the three groups of stress-tolerant varieties from each other and can be used to identify genes/new alleles associated with the three abiotic stresses in rice germplasm.