Variations in Mid‐Latitude Auroral Activity During the Holocene*

Estimates of the past location of the auroral zone can aid archaeologists in the interpretation of documented light phenomena in the night sky; in particular, during periods without written records and in regions where aurorae are scarce today. Aurora occurrence largely depends on solar activity as well as the tilt and strength of the geomagnetic field. Here, we introduce a tool (AUREST) that visually combines the time‐dependent variations of these parameters to provide relative estimates of aurora occurrence in mid‐latitude regions of the Northern Hemisphere over the past 10 000 years. Tests against historical aurora observations show good compatibility with AUREST.     

旅游活动"六要素"新论——以德国与四川比较为案例

本文对旅游六要素重新进行了定义与分析,认为旅游业现阶段的"新六要素"应该为:旅游资源、生态环境、经济基础、文化底蕴、文明状况、员工素质,针对德国与四川现阶段的旅游活动"新六要素"进行比较和研究,发现四川作为我国的旅游资源大省与世界旅游强国之间存在相当大的差异,通过比较对四川旅游业的发展提出了一些建议。     

Patterns of trauma in a unique medieval parish cemetery

The church and cemetery of St Margaret Fyebridgegate, Norwich were in use from AD 1245 to 1468. The cemetery was used to bury both the parishioners and hanged felons. On excavation, 52 group burials of various sizes were encountered, some containing prone individuals. Four hundred and thirteen inhumations have been examined, of which one-third had evidence of episodes of trauma. Comparison is made of the types of trauma present with evidence from the sites of the Blackfriars, Ipswich and the Mary Rose. Evidence is presented for some possible activity-related trauma at two of the sites.     

基于地方秩序嵌套的人类活动研究

活动的地方秩序嵌套"这一概念源于瑞典时间地理学者哈格斯特朗对人类活动复杂性及其背后蕴含的社会规则的思考,强调人类活动与其发生所需的时空资源配置之间的关系,隐含人类行为背后所需的各种资源在时间上的排列和空间上的组合规律。本文系统解读了"(活动的)地方秩序嵌套"的概念内涵、形成与符号表达,借助已有研究案例梳理不同地理空间尺度下地方秩序及其嵌套过程,以及目前这一领域的最新研究进展,在此基础上尝试提出这一概念在中国城市空间行为与规划中的研究与应用方向。     

居民社区活动空间共享的公共接触潜力测度方法

社区内的日常活动空间共享有利于创造居民面对面的社会接触,进而增进理解、提升社区信任和社区融合。基于行为地理学理论与方法,提出“物质空间—活动空间共享—社会心理空间”的关系路径,揭示社区居民的活动空间共享的研究意义;从结构、层级、尺度和载体四个角度构建居民社区活动空间共享的公共接触潜力分析框架;从社区和个体两个层级构建公共接触潜力测度方法,基于共同活动的联系衡量社区居民空间共享的广泛程度和频繁程度。在理论框架与指标测度的基础上,使用上海市郊区调查数据进行实证检验,分析了活动空间共享的社区差异和个体差异。研究指出,提升居民空间共享对建设充满人气的活力社区具有意义,能够为郊区社区生活圈建设和社区治理提供支持。     

An Initial Analysis of River Discharge and Rainfall in Coastal New South Wales,Australia Using Wavelet Transforms

In many coastal catchments of south eastern New South Wales, Australia, changes in river morphology are a response to human impact superimposed on spatial and temporal patterns of variability in precipitation and discharge. Understanding, and preferably quantifying, spatial and temporal patterns of hydrologic variability are essential to understanding natural changes, and to separate these from artificial changes in river systems. Prediction and management of water resources are also dependent upon this understanding. We assess the variability in precipitation and discharge using the wavelet transform which projects the time series of data into a three dimensional surface of frequency, amplitude and time. The analysis reveals that changes across time often reflect changes in individual seasons and may be linked to changes in particular seasonal atmospheric circulation systems. Strong perturbations in the analysis of one catchment are consistent with documented, geomorphically‐effective, flooding sequences. The characteristics of the series in the transformed data reveal interesting differences at certain times and scales which may be a reflection of changes in larger scale atmospheric processes.     

中清以来人类经济活动对三江源区生态环境的影响

三江源区在江河水流循环和大气环流中的枢纽作用使之在我国生态环境保护与建设中居于重要地位。根据有关历史记载、统计资料和科学知识,本对中清以来各主要时期三江源区的人口变迁、人类活动规模及其对生态环境的影响进行了分析、测算和评估,以期对三江源区生态环境的恢复性保护和建设提供依据。     

上海城市老年人日常购物活动空间研究

购物活动是老年人日常生活中主要的活动类型之一,对老年人日常购物空间的研究是理解老年人与其周围商业环境相互作用的关键,然而目前国内这方面研究才刚刚起步。本文以上海城市老年人日常活动问卷调查的第一手资料为基础,首先对数据进行汇总得出了上海城市老年人日常购物活动的发生频率、出行距离等总体特征。然后进一步细化,分别总结出各小区老年人的日常购物活动空间模式并进行对比分析,发现市中心老年人的日常购物活动空间比较紧凑,而郊区老年人的日常购物活动空间则相对分散。最后着重从上海市的商业空间及零售业态的变革、商业设施的可达性、老年人购物决策过程三个方面对这种差异性进行了解释。     

Spondylolysis in a pre‐contact San Francisco Bay population: behavioural and anatomical sex differences

Spondylolysis refers to a separation of the spinal body from the arch. Researchers have documented that these fractures occur due to stresses related to activities involving the lower limb and back. Spondylolysis in sacral and lumbar vertebrae of 146 (66 males, 66 females, 14 indeterminates) California Amerinds were examined to determine whether sex differences were present. Sacral anatomy (i.e. sacralisation and lumbarisation, sacral base angles, and superior facet morphology) was analysed in relation to spondylolysis and sex, to explore whether sex differences could be better explained through activity patterns or anatomical variation. Spondylolysis afflicted 24 individuals (16.4%). Males had more than twice the rate of spondylolysis than did females (26% and 11%, respectively). Activity patterns, such as thrusting and throwing shafted obsidian points, could explain the sex differences. Males were most frequently buried with obsidian point artefacts, whereas females were buried with mortar and pestles. For sacral anatomy, only males had lumbarisation, and all other anatomical variation had no significant sex differences. Lumbarisation related to spondylolysis in males. In this study, sacral anatomical variation could not fully account for sex differences in spondylolysis; activity patterns provided a better explanation. Nonetheless, anatomical variation may predispose males to spondylolysis, or spondylolysis may affect sacral anatomy. Copyright © 2008 John Wiley & Sons, Ltd.     

The relationship between school ground design and intensity of physical activity

In this study, we investigated the relationship between school ground design and children's physical activity levels. In particular, we were interested in understanding the contribution of ‘green’ school ground design to physical activity levels. Data for this study were collected at an elementary school in Australia and in Canada. At each school, scans of Target Areas were completed to record the students' location and intensity of physical activity, based on the System for Observing Play and Leisure Activity in Youth (SOPLAY) (Australia: 23 scans, 6 Target Areas; Canada: 18 scans, 7 Target Areas). At both schools, the highest percentage of children present was engaged in vigorous physical activity on the manufactured equipment (42% of children/scan). Similarly, at both schools, the green area encouraged the highest percentage of children present to be engaged in moderate physical activity (47% of Australian children/scan, 51% of Canadian children/scan). The patterns of sedentary behavior differed slightly between countries. At the Australian school, the paved sporting courts (57%) and the paved canteen courtyard (50.5%) promoted the highest degree of sedentary play. At the Canadian school, the treed grassy berm (42%) and the treed concrete steps (43%) encouraged the highest percentage of sedentary behavior, followed by the open asphalt (34%). These results are also discussed in light of gender distribution. We conclude with a discussion of the design and cultural factors that influence children's physical activity on school grounds. We argue that if school grounds are to realize their potential to promote physical activity, they should include a greater diversity of design features and ‘green’ elements that engage children of varying interests and abilities in active play.