具有阶段结构的修正捕食系统的周期解

研究具有阶段结构的修正捕食系统,利用重合度理论中的延拓定理,得到了系统周期解存在的充分条件.     

晚清河政弊坏的原因探析

晚清时期,接踵而至的侵略战争令清政府应接不暇,肆虐的黄河水灾又使多灾多难的中华民族面临更严峻的考验。晚清河政弊坏的严重局面是由贪污严重、官吏无能、玩忽职守和奖惩不力等原因所导致的。     

旱涝交替胁迫对稻田地表及地下水总磷的影响

通过蒸渗测坑对水稻拔节孕穗期和抽穗开花期2个重要生育期进行水位调控试验,研究单个生育阶段旱涝交替胁迫及2个生育阶段连续旱涝交替胁迫的稻田地表水、地下水总磷(TP)质量浓度变化。结果表明:旱涝交替胁迫对稻田地表水、地下水TP质量浓度变化影响显著,先旱后涝处理地表水的平均TP质量浓度比先涝后旱处理地表水TP质量浓度高,且P释放量下降速率快;地下水各处理受涝阶段的平均TP质量浓度比受旱阶段高,旱涝急转后TP质量浓度显著增加;与单个生育期进行旱涝交替胁迫处理相比,连续2个生育期进行旱涝交替胁迫处理时抽穗开花期TP质量浓度变化规律相似,但地表水平均TP质量浓度偏低,地下水平均TP质量浓度偏高。     

系统科学视域中的“重建个人所有制”

以系统科学的视角,重新认识马克思重建个人所有制的理论内涵。阐释重建个人所有制思想,是由生产资料全社会共同占有和私人所有等要素构成的系统科学理论体系。确认以坚持和完善社会主义初级阶段为主的四条路径内在联系的有机统一,是有利于重建个人所有制系统整体功能发挥的最优选择。提出对重建个人所有制系统来说,处理好与其他系统即环境之间的关系,最终达到重建个人所有制整体功能大于其各部分功能之和的功效,即实现真正意义上的重建个人所有制。     

民办本科院校图书馆文献资源体系建设初探——以福州外语外贸学院图书馆为例

新升格民办本科院校图书馆文献资源体系建设有其自身的特点. 以福州外语外贸学院图书馆为例,分析了新升格民办本科院校图书馆文献资源体系建设各阶段形成的原因,阐述了文献资源建设的内容特点及主要矛盾,并针对各阶段具体的情况,指出新升格民办本科院校图书馆文献资源体系构建任重而道远,它需要时间的积累和沉淀.     

Reliability Analysis of Lithography Wafer Stage Based on Fuzzy Bayesian Networks

Bayesian network（ BN） is a powerful tool of uncertainty reasoning. Considering the insufficient information,incorporating fuzzy probability into BN is an effective method. Fuzzy BN was used to solve this problem. In this paper,fuzzy BN was applied in wafer stage system,which was an important part of lithography. BN of wafer stage was transferred from fault tree（ FT）. The quantitative assessment based on fuzzy BN was carried out. The Birnbaum importance factors of basic events were calculated. Therefore,the system failure probability and the vulnerable components could be gotten.     

赛络洗毛法

阐述了原毛的组成、性质及赛络洗毛机理、工艺,介绍了赛络洗毛法的应用,并列举出各种洗毛法洗毛效果比较.     

Late holocene man-induced environmental change in central russian plain: paleopedological evidences from early-medieval archaeological site.

Local natural and man-induced environmental changes in the early medieval archaeological site in the central Russian plain were reconstructed by study of surface and buried soil profiles. Natural soils and ecosystems on watersheds were similar to present ones in agreement with palynological data. In the floodplain there are remains of forest soils and anthropogenic horizons. These formed in ancient urban environments and are buried under recent alluvium indicating that alluvial sedimentation and flood intensities were much less than at present. Ancient man-induced environmental change related to crop growing activity is well documented by palynological data but corresponding cultivated horizons are found only in few buried profiles, being unstable if left on the surface. Paleopedological signs of the ancient urban environment are very stable and preserved in surface soils even 1000 years after the settlement stopped functioning.     

浅谈现代舞台表演武术与舞蹈元素的融合

随着社会的进步,人们的审美观发生了很大的变化,武术的舞台表演形式也从简单的套路演练到与其它艺术元素的相互融合。比如,与音乐元素的融合、与书法元素的融合、与戏曲元素的融合、与舞蹈元素的融合等。本文将从形式美、韵之美、意境美三方面探讨现在舞台表演武术与舞蹈元素的融合。     

上海文化创意产业发展的阶段及其政策特征

基于政策视角,通过对上海市政府部门各个时期政策文件的分析,结合各个时期上海市文化创意产业的实践特点,指出上海市政府文化创意产业的发展主要历经了三个阶段,即自发集聚萌芽阶段、跃进式发展阶段和政府引导调控阶段,阐述了各个阶段的政策特征。针对目前上海文化创意产业存在的问题,提出了需要进一步完善的政策建议。