基于层次分析和移动窗口方法的济南市建设用地适宜性评价   总被引：3，自引：0，他引：3  

尹海伟  张琳琳  孔繁花  闫伟姣 《资源科学》2013,35(3):530-535

快速城市化使城市建设用地快速增长,但城市土地资源的有限性要求城市土地必须集约利用和合理开发,以实现城市可持续发展.进行城市建设用地适宜性分析有助于优化城市土地配置.本文以济南市为例,应用SPOT和ALOS高分辨率遥感数据进行土地利用解译与分类,基于ArcGIS、Fragstats软件平台,采用层次分析(AHP)与移动窗口相结合的方法,将景观指标融入建设用地适宜性评价因子中,并结合城市土地利用的自然和其他限制因子,对济南市2004年城市建设用地的适宜性进行了评价和等级划分,最后利用2009年土地利用现状图对评价结果进行有效性和可靠性分析.评价和分析表明,2004年适宜于城市建设用地的区域主要分布在城市中心以及东西部区域,2009年新增加的建设用地分布范围与2004年适宜性评价结果大致吻合,评价结果具有一定准确性和实用性.研究结果可为城市建设用地增长管理提供参考依据和决策支持.  相似文献   

The use of the intensity gradient and average acceleration metrics to explore associations with BMI z-score in children     

Duncan S. Buchan  Gillian McLellan  Samantha Donnelly  Rosie Arthur 《Journal of sports sciences》2013,31(23):2751-2758

ABSTRACT

This study used the intensity gradient (IG) and average acceleration metrics to describe children’s activity profiles and explore associations with body mass index (BMI) z-score. Two hundred and forty-six children (n = 138 girls) aged 9.6 ± 1.4 years wore a wrist-mounted ActiGraph wGT3X-BT accelerometer for 7 days on their non-dominant wrist. Physical activity (PA) metrics captured included: the IG which describes the intensity distribution of accelerations across the 24 h monitoring period; average acceleration which provides a measure of the volume of activity; total moderate-to-vigorous PA (MVPA) and inactive time. Acceleration was averaged over 5s epochs. Finally, BMI z-score was calculated for each participant. Average acceleration was negatively associated with BMI z-score (p < 0.05) independent of age and gender but not IG. The IG was negatively associated with BMI z-score independent of potential correlates and average acceleration. Total MVPA was not associated with BMI-z score. The IG and average acceleration metrics may be used to explore the independent or cumulative effects of the volume and intensity distribution of activity upon measures of health and well-being in children to inform specific activity recommendations.  相似文献   

Getting the Measure of Measurement: Global educational opportunity     

Penny Enslin  Mary Tjiattas 《Educational Philosophy and Theory》2017,49(4):347-361

Abstract

Although measurement is widely misused in education, it is indispensable in addressing the problems of injustice in global educational opportunity. Considering how the case can be made for legitimate use of measurement in normative analysis and argument, we explore ways in which metrics have featured in the formulation of theories of justice, with particular attention to resourcist and capabilities approaches. We then consider three means of addressing global inequality and defend a reconstruction of the public sphere in which objective measures of justice, deliberatively constructed, could supersede prevalent assumptions about measurement.  相似文献   

浮磬铿锵明珠璀璨——饶宗颐1949～1978年诗歌创作略述     

赵松元 《韩山师范学院学报》2008,29(1):1-8

从1949到1978,在寓居香港的30年中,饶宗颐教授以香港为轴心,学游世界各地,在学术研究上规模越来越宏伟的同时,其诗歌创作也如百川入海,波翻浪涌,从居港之作到行旅欧洲之作,从行旅南亚、东南亚之作,到行旅扶桑、北美之作,反映出饶宗颐教授中年时期的创作轨迹和多姿多彩的创作风貌,格局越来越大,境界越来越开阔,表征出现代学人之诗的超越古典诗歌的高度成就,成为20世纪诗坛的一方重镇。  相似文献   

金融行业信息资源优化协同配置标准的系统分析     

赵海军 《情报资料工作》2012,(2):53-58

文章采用模型分析的方法从系统论和协同学的角度透析了金融行业信息资源优化协同配置的影响因素与动力机制,围绕协同配置的目标愿景提出了金融行业信息资源协同配置过程中应当遵循的6大行为准则,透过金融信息资源协同配置主体的信源特征、主体职能、服务对象与服务愿景,逐一分析了我国金融行业信息资源协同配置的主体要素、技术要素和本体要素优化协同配置的衡量标准.  相似文献