人口流动如何影响主观幸福感——基于主观社会地位的中介效应

中国城镇化背景下的大规模人口流动行为一直都是学术界关注的焦点。但是关于人口流动行为与迁移个体的主观幸福感之间的关系依然鲜有研究。采用2014年中国劳动力动态调查（CLDS）数据，通过倾向得分匹配法研究迁移人群对幸福感认知的中介作用机制。研究结果发现：迁移行为显著影响了个体的主观幸福感水平；主观社会地位对于迁移行为-主观幸福感的关系具有明显的中介作用。最后，对于该研究的理论贡献和实践意义进行了讨论，并指出了未来的研究方向。     

Linux中基于Agent的进程迁移

探讨在Linux操作系统中基于代理的进程迁移方法,包括代理的组织、代理的通讯方式、迁移进程信息的获取及进程迁移后未完成报文和打开文件的处理等.     

断裂带作为油气散失通道的输导能力

通过断裂散失的油气量主要与断裂带的输导能力、实际进入断裂带的油气量、断裂通道的长度、散失时间和储层分流系数等参数有关。断裂带输导能力的主要因素是断裂带的宽度和储层渗透率。利用断裂散失模型计算了不同规模的断裂带作为油气散失通道的输导能力。计算结果表明 ,大型断裂带输导油气的能力远大于储层输导油气的能力。断裂活动期进入“通天”大断裂带的油气主要趋于散失 ;小断裂由于储层的分流作用 ,即使在活动期 ,它作为油气散失通道的作用也是有限的 ,其油气的散失量可以忽略不计。     

济源凹陷油源追踪及烃类垂直运移作用

济源凹陷为一中、新生代复合型断陷．下第三系原油为轻质、低硫原油，与下伏中生界（Ｔｔ－Ｊ２）湖沼相生油岩抽提物具有同源性，而与下第三系泥岩抽提物回然相异。后邓断裂是烃类垂直运移的良好通道，中生界生成的烃类沿断裂经过了约３０００－４０００ｍ的垂直运移而聚集成芷。长距离的垂直运移造成了原油中ｒ－蜡烷的富集，作为运移通道的断裂发育时间、规模等控制了浅层油芷的分布．     

石油微观渗流数值模拟实验

应用基于骨架隐曲面造型技术，构造了一种抽象的孔隙空间模型，在此基础上运用系统模拟技术开发了一个石油微观运移数值模拟实验平台，用于模拟和展示石油在饱含水孔隙介质中的运移过程，并验证了以浮力为主要运移动力的动力学模型的适用性。     

ANALYSIS OF REGIONAL ECONOMY GROWTH WITH THE THEORY OF DIFFERENTIAL SYSTEM DYNAMICS

In order to describe the interrelation forces among different regions during the economic growth, this paper introduces and analyzes the dynamical system model with the theory of differential systems dynamics. A practical example based on a simplified model is given to analyze the dynamical process of Sichuan economy growth.     

Pathways for oxidative fuel provision to working muscles: Ecological consequences of maximal supply limitations

The study of metabolic fuel provision and its regulation has reached an exciting stage where specific molecular events can be correlated with parameters of the organism's ecology. This paper examines substrate supply pathways from storage sites to locomotory muscle mitochondria and discusses ecological implications of the limits for maximal flux through these pathways. The relative importance of the different oxidative fuels is shown to depend on aerobic capacity. Very aerobic, endurance-adapted animals such as long distance migrants favor the use of lipids and intramuscular fuels over carbohydrates and circulatory fuels. The hypothesis of functional co-adaptation between oxygen and metabolic fuel supply systems allows us to predict that the capacity of several biochemical processes should be scaled with maximal oxygen consumption. Key enzymes, transmembrane transporter proteins, glucose precursor supply and soluble fatty acid transport proteins must all be geared to support higher maximal glucose and fatty acid fluxes in aerobic than in sedentary species.     

Seismic 3D Prestack Time Migration on Parallel Computers

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Evolutionary and ecological implications of cardenolide sequestration in the monarch butterfly

Summary Monarch butterflies sequester cardenolides from their larval host plants in the milkweed genusAsclepias for use in defense against predation. Of 108Asclepias species in North America, monarchs are known to feed as larvae on 27. Research on 11 of these has shown that monarchs sequester cardenolides most effectively, to an asymptote of approximately 350 g/0.1 g dry butterfly, from plants with intermediate cardenolide contents rather than from those with very high or very low cardenolide contents. SinceAsclepias host plant species are distributed widely in space and time across the continent, monarchs exploit them by migration between breeding and overwintering areas. After overwintering in central Mexico, spring migrants east of the Rocky Mountains exploit three predominantAsclepias species in the southern USA that have moderately high cardenolide contents. Monarchs sequester cardenolides very effectively from these species. First generation butterflies are thus well protected against predators and continue the migration north. Across the northern USA and southern Canada most summer breeding occurs on a fourthAsclepias species and in autumn most of these monarchs migrate back to Mexican overwintering sites. The ecological implications of this cycle of cardenolide sequestration for the evolution of monarch migration are discussed.