平谷区农村居民点用地的时空特征及优化布局研究

农村居民点的优化布局必须在分析现状的基础上,按照农村产业发展规划目标,针对不同类型进行分类调控,科学评价农村居民点的综合发展潜力是村庄量化分类的基础,也是协调推进村庄整治的关键所在.本文以北京市平谷区为例,利用2004年、2009年土地利用现状数据库,研究了平谷区2009年农村居民点空间分布特征及2004年-2009年间居民点用地的变化情况.结合山区和平原区的不同发展条件,分别制定山区和平原区农村居民点的综合发展潜力评价指标体系,运用GIS的地理空间分析功能,对评价要素的空间叠加、计算,评价村庄的综合发展潜力.并将评价结果与城镇发展规划相结合,针对农村居民点用地的区位条件,提出居民点用地调控的类型及区域产业发展布局的方向.研究结果体现了土地利用的现状及适宜性,对推进农村居民点整理具有一定的指导意义.     

资源枯竭城市转型成效测度研究

资源枯竭城市转型是当前中国国家转型的一个重要组成部分。在经历了改革开放、东北老工业基地振兴以及近5年国家针对资源枯竭城市大规模援助的发展形势下,资源枯竭城市转型发展的成效如何？本文试图从资源枯竭城市转型的静态和动态两个视角,构建资源枯竭城市转型成效测度体系,测算2006-2010年各资源枯竭城市的转型成效,并分析各城市转型成效差异的原因。研究发现:通过从产业、民生、生态环境3个维度综合评估城市转型过程和转型后达到的状态等指标,可以将城市转型发展的成绩与其由于周边区域发展所取得的共同成绩分离出来,较为有效的测度资源枯竭城市的转型成效;中部城市转型成效相对较好,而东北地区城市转型相对较差;石油类城市转型成效较好,而森工类城市转型成效较差;各城市转型成效的差异与其外部经济环境、内部历史矛盾的积累深度以及发展基础有较大关系。     

近十年我国社会网络研究团队透视

本文通过对中国知网中国期刊全文数据库中近十年来社会网络研究领域的文献进行计量分析,结合社会网络分析方法,研究了社会网络研究领域文献增长情况、期刊分布,介绍了相关高产作者及机构,并实现其可视化,以期从宏观层面把握我国社会网络领域研究现状提供一定程度的借鉴。     

基于FLowmaster的飞机压力加油系统管路设计仿真

基于某民用飞机压力加油系统设计特点,应用Flowmaster对压力加油系统进行了仿真计算,并通过原理性试验验证,证明计算仿真结果真实有效,能够有效提高压力加油系统研制效率,降低研制成本.文中所提到的仿真计算方法可为其它验证流体管路系统设计提供参考.     

体育课堂评价结果的处理对学生心理健康和社会适应目标的影响

体育课堂评价不仅仅是关注学生的学业成就,更要发现和发展学生的潜能,促进学生实现自身价值的最大化,合理利用体育的评价结果,通过评价结果的解释,评价的信息反馈,反馈后改进的动态循环过程,有效促进心理健康和社会适应目标领域的学习.     

试析孟子“义利之辨”

"义利之辨"作为儒家伦理思想史上的重要问题,千百年来从未丧失过其独特的吸引力,至今仍是值得思考和探讨的命题。在诸多对"义利之辨"的讨论中孟子无疑具有最重要的地位,他的义利思想不仅正式将"义利之辨"推上伦理思想史的舞台,更是对后世学者对义利关系的讨论有着重要影响。从讨论孟子"义"、"利"含义着手,通过对其义利观内容的解读和对义利观背后矛盾的考察,厘清孟子"义利之辨"的原本思想脉络。     

Analysis of repeated high-intensity running performance in professional soccer

Abstract

The aims of this study were twofold: (1) to characterize repeated high-intensity movement activity profiles of a professional soccer team in official match-play; and (2) to inform and verify the construct validity of tests commonly used to determine repeated-sprint ability in soccer by investigating the relationship between the results from a test of repeated-sprint ability and repeated high-intensity performance in competition. High-intensity running performance (movement at velocities >19.8 km · h^?1 for a minimum of 1 s duration) was measured in 20 players using computerized time–motion analysis. Performance in 80 French League 1 matches was analysed. In addition, 12 of the 20 players performed a repeated-sprint test on a non-motorized treadmill consisting of six consecutive 6 s sprints separated by 20 s passive recovery intervals. In all players, most consecutive high-intensity actions in competition were performed after recovery durations ≥61 s, recovery activity separating these efforts was generally active in nature with the major part of this spent walking, and players performed 1.1 ± 1.1 repeated high-intensity bouts (a minimum of three consecutive high-intensity bouts with a mean recovery time ≤20 s separating efforts) per game. Players reporting lowest performance decrements in the repeated-sprint ability test performed more high-intensity actions interspersed by short recovery times (≤20 s, P < 0.01 and ≤30 s, P < 0.05) compared with those with higher decrements. Across positional roles, central-midfielders performed more high-intensity actions separated by short recovery times (≤20 s) and spent a larger proportion of time running at higher intensities during recovery periods, while fullbacks performed the most repeated high-intensity bouts (statistical differences across positional roles from P < 0.05 to P < 0.001). These findings have implications for repeated high-intensity testing and physical conditioning regimens.     

Attentional Patterns Involved in Coping Strategies in a Sport Context

We investigated the relationship between coping strategies and attentional bias after a sport competition. We administered the Ways of Coping Checklist (Paulhan, Nuissier, Quintard, Cousson, & Bourgeois, 1994) to 145 athletes immediately after they had participated in a sport competition. We also assessed attentional bias using a dot probe detection task. Results revealed that emotion-focused coping strategies led athletes to orient their attention away from threat, whereas athletes who adopted problem-focused coping strategies focused their attention toward threat. More precisely, problem-focused coping strategies are related to a facilitated detection of threat, not to disengagement difficulties. The vigilance attentional bias seems to be a compensatory strategy to cope with a stressful situation, such as sport competition.     

Bribing Referees: The History of Unspoken Rules in Chinese Professional Football Leagues, 1998–2009

The topic of corruption in football has recently shifted from the periphery to the centre of social scientific attention. Although it is a topic of growing interest, research into corruption in football has been empirically limited and not adequately developed in theory. In this paper, the author studies referee bribery in Chinese professional football leagues, which would be helpful to compensate for the relative absence of experience and theories. By qualitatively analyzing primary and secondary sources, the author, using unspoken rules as a theoretical perspective, reviews referee bribery related to corruption in Chinese football. According to this study, bribing referees in Chinese professional football leagues between 1998 and 2009 was a common practice and deemed to be an unspoken rule by all football clubs. This paper identifies three forms of bribing referees to manipulate matches: paying off referees, manipulation of referees by CFA officials, and investing in emotional bonds. By describing bribe giving as an unspoken rule, the author looks at the widespread referee bribing and its tacit acknowledgement by clubs. This study focuses on examples related to Chinese football leagues; however, it also provides a framework under which corruption in international football can be understood and analyzed.