Human kinematics and event control: on-line movement registration as a means for experimental manipulation

In human movement and sports science, manipulations of perception and action are common and often comprise the control of events, such as opening or closing liquid crystal goggles. Most of these events are externally controlled, independent of the actions of the participants. Less common, although sometimes desirable, are event manipulations that are dependent on the unconstrained movements of participants. As an example, we describe a method we used previously to manipulate vision of basketball jump shooters on the basis of on-line registration of their own movements. The shooters wore liquid crystal goggles that opened or shut as a function of specific kinematic features of these movements. The novel aspect of this method is that the criteria for detecting movement patterns and performing the appropriate manipulations are adjustable to the specific sport context and the complexity and variations of the unconstrained movements. The method was implemented as a finite state machine: a computer system that can be used for pattern recognition. We discuss this method, how it works and the potential it has for studying perceptual-motor skills in sport. Furthermore, the results of the basketball experiment are briefly summarized and complemented with new analyses.     

Donor financing of basic education: Opportunities and constraints

Much progress has been made in improving access to basic education in recent years, but international support has been less than promised and the ‘funding gap’ to achieve universal primary education remains stubbornly present. This article identifies six interrelated factors that constrain such donor financing. Prioritization of basic education, evidence and advocacy, and aid architecture present the biggest challenges, followed by donor capacity, partner absorptive capacity and demand. We conclude that future success in attracting external financing for basic education will depend on the sector's ability to raise its political profile, make an evidence-based case for support, tap into new donors and improve its aid effectiveness.     

技术创新网络中核心企业形成的三状态模型研究——基于企业间关系耦合的分析

技术创新网络的扩张与核心企业的成长相互促进,相互决定,形成了复杂的共生演化关系。以知识为基础的企业,必须在各个层次上构建网络,维护多层交互作用,加强与其他企业的合作。从企业间关系耦合的视角,分析了技术创新网络中核心企业的形成过程,提出技术创新网络中各结点企业间的技术合作是一种相互间的知识协同。研究发现,企业间技术交流的过程就是企业间知识匹配——知识流动——知识控制的过程,而技术创新网络中的企业结点也是通过这三种状态,使自身能力得到提升,进而影响到与其他结点的知识协同,并最终成长为核心企业。     

探讨临时支撑卸载分析中的两种方法

目前在工程中，临时支撑卸载过程的分析和模拟主要有两种方法．利用这两种方法分别建立临时支撑卸载的有限元模型并在ANSYS中对这两个模型的卸载过程进行模拟和分析，从理论上和有限元分析结果上对这两种方法进行了探讨．     

洞庭湖水质变化趋势的研究

以洞庭湖1992-2010年系列监测资料为依据,对洞庭湖19年的整体水质情况、富营养化状况以及主要污染指标进行了评价分析。结果表明:洞庭湖水质污染以氮磷污染为主,水体状况呈逐渐恶化的趋势,富营养化程度逐年加剧。2007年对洞庭湖流域进行整治后,水体中化学需氧量降低,但水体总氮和总磷浓度仍呈上升趋势,致使洞庭湖水体中叶绿素a含量和浮游植物数量显著增加。     

157Tm原子核三轴超形变的研究

根据TRS理论计算了^157Tm核的位能面，并预言了其三轴超形变的存在,计算的结果与文献上的结果符合得较好。