Comparison of the effects of different isomers of bicuculline infused in the preoptic area on male rat sexual behavior

Summary Intracerebral infusion of (+) bicuculline methiodide, but not of its (–) isomer, in the preoptic area, stimulated masculine sexual behavior in rat as evidenced by a decrease in the number of intromissions preceding ejaculation and a shortening of the ejaculation latency and postejaculatory interval. Data suggest a role of the GABAergic system in mediating masculine sexual behavior.Acknowledgments. Authors wish to thank Ms Elisabeth Wallin for excellent technical assistance and Ms Madelene Kröning for preparing the figures.     

产业群系统优势的主导因素及其历史演化

产业群是一种历史现象，在不同时代都存在着某种特定因素主导它的系统优势，并且这种因素在不断演进。     

The mating behavior of individuals ofDrosophila pseudoobscura from New Zealand

Summary Recently discovered individuals in New Zealand of the North American speciesDrosophila pseudoobscura were analyzed for any divergence in mating behavior. Cultures collected from five localities in North American were mated with a stock from Rotorua, New Zealand. No significant divergence was obtained in any of the within North Americ, and more importantly, between North American and New Zealand mating experiments. Further analyses also showed no development of sterility between recently caught New Zealand and North American flies. We discuss our results in relation to others of this type.Publication No. 5 from the Evolutionary Genetics Laboratory, University of Auckland.Acknowledgements. We thank the University Grants Committee, grant No. 140Z88, for financial assistance. We thank D.G. Futch., L. Barr, A. Beckenach and H. Spencer for their kind assistance in sending us wild caught cultures.     

搅拌桩在复合型土钉支护中的工作性能研究

利用三维非线性有限元方法对复合型土钉支护中水泥土搅拌桩的工作性能进行了分析研究,得出水泥土搅拌桩沿桩长方向的水平位移、弯矩、剪力、应力等参数随开挖步增加的变化曲线,可供复合型土钉支护工程的设计和施工人员参考.     

一种基于动物自治体的寻优模式:鱼群算法

根据鱼群的行为特点 ,并应用动物自治体的模型 ,提出了一种自下而上设计的新型的寻优策略 -人工鱼群算法 (Artificial Fish-swarm Algorithm) .通过仿真试验的研究表明 ,这是一种有效的寻优模式.     

耗散Schrdinger-Poisson方程组解的渐近性

考虑耗散Schr dinger Poisson方程组的Cauchy问题 ,对吸引力情形 ,证明了该问题整体强解的存在唯一性和解的渐近性。     

陕南柞水初生至42个月儿童智能状况研究

对陕南柞水试验点原七坪，下梁，西川三乡３．５岁以下２０５名儿童的智能发育状况研究表明，（１）该地区３．５岁以下儿童的智能发育低于量表的常模水平，主要表现在应物能与言语能的发育商偏低；（２）儿童的智能发展在该试验点表现出的特点是随着儿童年龄的增长，由于社会文化刺激因素的缺乏，儿童在个别行为能区的发育商有递减趋势。     

Genetic study on the behavior of honeybees influenced by polyandry system

Within a honeybee population, due to polyandry, there are supersister and halfsister relations, thus many subfamilies exist. For the Chinese honeybee (Apis cerana cerana F.) a phylogenetic dendrogram has been constructed in which 4 subfamilies are clustered based on DNA fingerprint patterns. And it has been observed that each kind of workers is distributed to several dierent sub-families.     

基于令牌的共享白板一致性算法

给出了三种多媒体电视会议的共享白板系统一致性的定义，提出了一个基于令牌的共享白板通信算法，算法的核心是使用一个循环传递的令牌来分配白板绘图消息的局部序号和全局序号，控制消息发送和处理的顺序，从而保证用户白板在外观上的一致．该算法对于三种一致性均能满足．     

普通高校女生课外健身“运动参与”态度和行为的研究

运用文献资料法、问卷调查法和访谈法对普通高校女生课外健身运动参与态度和行为进行调查,分析了解普通高校女生课外健身运动参与的态度,运动参与实施度,运动参与性质,运动参与形式及影响女生课外健身运动参与行为的主要原因,并针对发现的问题提出相应的建议,为女生达到比较高的课外健身运动参与水平提供必要的参考。