Changing bodies, spaces, places and politics: Feminist geography at the University of Waikato

Abstract: ‘Place matters’ in the production of knowledge. This article examines the production of feminist geographical knowledge at a particular place – the Department of Geography, Tourism and Environmental Planning at the University of Waikato. Feminist geography at Waikato represents a nexus of international, national, regional, and local politics. It represents the efforts, personalities, political and personal motivations of particular individuals, at particular times, in a particular space. While international trends are important, they can also mask the unfolding of events in different ways in ‘other’ places.     

大同地区暴雨的天气分型及其成因的初步分析研究

根据大同市所辖8个县气象站点自有气象记录以来的暴雨资料，应用天气学及气候学等原理，对大同地区暴雨的天气气候特征和形成机制进行了系统的分析与研究，得出了相关结论。     

基于T213数值产品的安康降水分县预报释用

将临汾市尧都区1954年至2001年小麦产量年增量和其全生育期降水量进行同步统计分析得出：小麦生产全生育期降水量大于同期降水平均值20％，则绝大多数是增产年；小麦生育期降水量少于同期降水平均值50％，则是欠收年；当小麦全生育期降水量在同期降水平均值-50％至20％之间时，小麦是增产?或是减产，由其它影响小麦产量因素决定。     

The symbolic order of objects and the frame of geographical action: An analysis of the modes and effects of categorisation of the geographical world as applied to the mountains in the West

Societies cope with their geographical environment with the help of objects and categories of objects. Objects are cognitive symbols enabling societies to come to terms with the incertainties and complexity of the real. This text begins by presenting processes of objectivation and of categorisation of geographical reality. Then, it analyses how far categorisation of objects influences the practice and the transformation of corresponding reality. Coping with categorisation and transformation, it thus circumscribes the interactions between language, cognition and action by which geographical entities are transformed. It illustrates this thesis with the historical transformation of modes of apprehension of the mountains in the West and the parallel transformation of their usage and the modes of planning applied to them. This revised version was published online in July 2006 with corrections to the Cover Date.     

战略环境评价的若干理论问题的探讨

战略环境评价(简称SEA)是环境影响评价(简称EIA)研究领域的前沿课题。中国对SEA的研究始于20世纪90年代，起步较晚。在了解SEA的概念、特点的基础上，阐述了SEA与项目EIA在评价方法、评价内容上是有所差异的，在评价程序和步骤上是有共同点的。SEA是项目EIA的深化和提高。目前在中国进行EIA的过程中，EIA的局限性和所反映出的问题日益明显，为了提高中国EIA的针对性、科学性和有效性，应积极开展SEA的研究和实践。     

Impact of habitat heterogeneity on plant community pattern in Gurbantunggut Desert

This paper reports a geomorphologic landscape investigation, vegetation survey and soil sampling at 14 sites across the Gurbantunggut Desert between 87o37'09'-88o24'04'E and 44o14'04'-45o41'52'N. The study encountered 8 species of low trees and shrubs, 5 of perennial herbs, 8 of annual plants and 48 of ephemeral and ephemeroid plants. These species of plants represent one-third of the species found in the Gurbantunggut Desert, and their communities make up a large proportion of desert vegetation with great landscape significance. In the investigation we found that the plant communities are accordingly succeeded with the spatial variation of macro-ecoenvironment. Using Principal Component Analysis (PCA) and Correlation Analysis (CA) we found that the micro-ecoenvironment heterogeneity of aeolian sandy soil's physical and chemical properties such as soil nutrient, soil moisture, soil salt, pH etc. only impacted the diversity of herb synusia (PIEherb) of the desert, with a negative correlation. Meanwhile, the impact of microhabitat on the plant community pattern with an antagonistic interaction made vegetation's eco-distribution in a temporary equilibrium.     

无人工作面开采坚硬顶板冲击运动的3DEC数值模拟研究

分4个阶段模拟了无人工作面开采坚硬顶板采场顶板的运动规律.第1阶段,坚硬顶板的悬而不落是下一区段无煤柱开采的隐患.开采范围达到8 000 m2时的第2阶段,采场坚硬顶板的冲击性垮落,使工作面前方煤体及巷道既已形成的高应力区骤然释放.开采范围继续扩大的第3阶段和第4阶段,坚硬顶板从整体大范围冲击性运动向周期性分段运动转化.北京矿务局木城涧煤矿无人工作面坚硬顶板在采场面积约为8 000 m2的初次冲击性垮落,验证了3DEC理论研究结论,其强制放顶等防冲措施实施的最佳时机为第2阶段的开采活动结束之前.     

区域生态环境评价中宏观评价指标和工作方法简介

应用遥感技术和地理信息系统的手段及方法，拟定出一套较完善、系统的生态环境宏观评价指标，并编制景观生态类型图，指出该方法可以快速、廉价地开展区域环境评价。     

Sand detachment by wind‐driven raindrops

Wind movement and velocity can have a profound effect on some aspects of the soil erosion process. In the case of wind‐driven rain, differences in raindrop trajectory are expected: wind‐driven raindrops achieve some degree of horizontal velocity, which increases their resultant impact velocity and they strike the soil surface at an angle deviated from the vertical under the effects of both gravitational and drag forces. However, not much is known about the physical impact of raindrops on a soil in situations where this impact is at an angle, and it is also not precise known if oblique raindrops have stronger erosive effects than vertical ones. A series of tests was conducted to assess the effect of wind velocities on sand detachment from splash cups in a wind tunnel facility equipped with a rainfall simulator. Splash cups packed with standard sand were exposed to windless rains and to rains driven by horizontal wind velocities of 6, 10 and 14 m s^?1 to evaluate the sand detachment by wind‐driven raindrops. The average angle of rain inclination from vertical was calculated from the direct intensity measurements implemented with windward and leeward‐facing raingauges placed at different slopes. A kinetic energy sensor measured energy of windless and wind‐driven rains. Results showed that the kinetic energy flux calculated by the resultant impact velocity of drops adequately described the sand detachment from the splash cups by wind‐driven raindrops. However, an additional analysis of Pearson correlation coefficients using the velocity components rather than the resultant velocity of wind‐driven raindrops indicated that the energy flux related to the horizontal component of wind‐driven raindrops had a greater correlation with sand detachment than that related to the normal component. This finding contradicted the general assumption that the component of velocity normal to the surface is related to the detachment. Copyright © 2005 John Wiley & Sons, Ltd.     

Nanophase Fe0 in lunar soils

Back scattered electron and transmission electron imaging of lunar soil grains reveal an abundance of submicrometer-sized pure Fe⁰ globules that occur in the rinds of many soil grains and in the submillimeter sized vesicular glass-cemented grains called agglutinates. Grain rinds are amorphous silicates that were deposited on grains exposed at the lunar surface from transient vapors produced by hypervelocity micrometeorite impacts. Fe⁰ may have dissociated from Fe-compounds in a high temperature (>3000°C) vapor phase and then condensed as globules on grain surfaces. The agglutinitic glass is a quenched product of silicate melts, also produced by micrometeorite impacts on lunar soils. Reduction by solar wind hydrogen in agglutinitic melts may have produced immiscible droplets that solidified as globules. The exact mechanism of formation of such Fe⁰ globules in lunar soils remains unresolved.