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1.
西部大开发中新疆城镇发展的对策研究 总被引:4,自引:1,他引:3
谢永琴 《新疆大学学报(社会科学版)》2002,30(1):14-18
实施西部大开发是国家提出的一项重大战略决策。城市是社会经济发展的一个重要组成部分 ,如何对待城市的发展问题 ,关系到西部地区开发成败的关键。本文首先分析了新疆城镇发展的主导因素 ,指出以政府为主导的发展模式是新疆城镇发展缺乏内在动力的原因。然后从城镇空间分布及城镇体系等方面分析了目前新疆城镇发展的主要特征及存在的问题。最后在以上分析的基础上 ,提出了今后城镇发展的对策与建议 相似文献
2.
Tree health is a critical parameter for evaluating urban ecosystem health and sustainability. Traditionally, this parameter
has been derived from field surveys. We used multispectral remote sensing data and GIS techniques to determine tree health
at the University of California, Davis. The study area (363 ha) contained 8,962 trees of 215 species. Tree health conditions
were mapped for each physiognomic type at two scales: pixel and whole tree. At the pixel scale, each tree pixel within the
tree crown was classified as either healthy or unhealthy based on vegetation index values. At the whole tree scale, raster
based statistical analysis was used to calculate tree health index which is the ratio of healthy pixels to entire tree pixels
within the tree crown. The tree was classified as healthy if the index was greater than 70%. Accuracy was checked against
a random sample of 1,186 trees. At the whole tree level, 86% of campus trees were classified as healthy with 88% mapping accuracy.
At the pixel level, 86% of the campus tree cover was classified as healthy. This tree health evaluation approach allows managers
to identify the location of unhealthy trees for further diagnosis and treatment. It can be used to track the spread of disease
and monitor seasonal or annual changes in tree health. Also, it provides tree health information that is fundamental to modeling
and analysis of the environmental, social, and economic services produced by urban forests. 相似文献
3.
实施乡村振兴战略要防止的几种倾向 总被引:2,自引:0,他引:2
贺雪峰 《中国农业大学学报(社会科学版)》2018,35(3):111-116
乡村振兴战略是要服务于中国建设社会主义现代化强国的目标,是要为建设中国社会主义现代化强国提供稳定的农村基础。 在不同阶段,乡村振兴战略的任务是不同的,尤其是 2035 年之前和2035—2050 年的乡村振兴战略应该是差异极大的。 2035—2050 年的目标是全面乡村振兴,2035 年之前则是为乡村全面振兴打基础的阶段。 没有中国现代化的基本实现,就没有全面振兴乡村的物质基础。乡村振兴战略必须分阶段实施。 当前学界、政策部门、地方实践部门在解读乡村振兴战略时普遍误解了乡村振兴战略的实施阶段性特征,有急于求成的倾向。 相似文献
4.
城市迁移人口及管理问题探讨 总被引:3,自引:2,他引:1
改革开放以来中国城市人口增长的最主要来源是人口的迁移增长 ,因此城市人口管理体制的重要一环是城市人口迁移的管理。本文根据城市人口迁移管理体制及其相关的问题进行分析 ,提出了要科学地依据自然资源与社会资源测定城市的人口承载力 ,对人口迁移增长的控制有科学的根据 ,对人口迁移增长有目标、有规划 ,并对城市人口迁移进行科学管理的创见 相似文献
5.
运用扩展线性支出系统对2005年江苏省城镇居民消费结构进行分析,分析结果表明:交通通讯、食品和教育文化娱乐服务的边际消费倾向较高,江苏省居民较愿意在这3类商品或服务上增加支出;同时,8类商品及服务的收入弹性均为正值,说明随收入水平的提高,这些商品的需求量也随之增加,其中交通通讯、杂货项商品和家庭用品需求增长率大于收入增长率. 相似文献
6.
王解静 《南京人口管理干部学院学报》2007,23(3):30-34
以2005年的统计数据为主要依据,通过测算及横向与纵向的比较,对我国城市居民最低生活保障水平进行了分析,目的在于廓清人们对中国目前最低生活保障水平的认识.综合分析表明,尽管在制度设计和具体实施中仍存在缺陷和问题,但保障水平过高肯定不是当前低保制度面临的问题,对低保"养懒汉"的抨击也是一种片面的夸大. 相似文献
7.
韩邦庆在中国小说史上是一个开风气者,他是近代最早描写中国现代都市的小说家;更重要的,在当时描写现代都市的小说家中,他是唯一一位为了探索这一描写还提出了相应叙述理论的小说家。这一叙述理论一直到现在为止,还常常被作家们所运用。韩邦庆最大的贡献在于运用了“穿插藏闪”的叙述方法,用以表现现代都市的时空,拓展了小说的表现能力。 相似文献
8.
Substantial evidence supports the value of outdoor education programs for promoting healthy adolescent development, yet measurement of program outcomes often lacks rigor. Accurately assessing the impacts of programs that seek to promote positive youth development is critical for determining whether youth are benefitting as intended, identifying best practices and areas for improvement, and informing decisions about which programs to invest in.We generated brief, customized instruments for measuring three outcomes among youth participants in Baltimore City Outward Bound programs: conflict management, emotional self-efficacy, and problem solving confidence. Measures were validated through exploratory and confirmatory factor analyses of pilot-testing data from two groups of program participants. We describe our process of identifying outcomes for measurement, developing and adapting measurement instruments, and validating these instruments.The finalized measures support evaluations of outdoor education programs serving urban adolescent youth. Such evaluations enhance accountability by determining if youth are benefiting from programs as intended, and strengthen the case for investment in programs with demonstrated success. 相似文献
9.
Hessel Nieuwelink Paul Dekker Femke Geijsel Geert ten Dam 《Journal of youth studies》2016,19(7):990-1006
Research shows adolescents to be positively oriented towards democracy, but little is known about what it actually means to them and what their views are on decision-making in both everyday situations and political democracy. To gain insight into these aspects of adolescents’ democratic views, we have interviewed 40 Dutch adolescents from second grade of different types of high school. Potential conflict between various democratic principles prevalent in everyday life situations was discussed and compared to how they view decision-making in political democracy. The results of our qualitative study showed that adolescents’ views on issues concerning collective decision-making in everyday situations are quite rich and reflect different models of democracy (majoritarian, consensual, and deliberative). Moreover, how adolescents deal with tensions between democratic principles in everyday life situations varies. While some adolescents combine several principles (for instance, majority rule as a last resort after trying to find broader consensus), other adolescents tend to strictly focus on only one of these principles. Adolescents’ views on political democracy, however, are rather limited and one-dimensional. Those adolescents who seemed to have a more explicit picture of political democracy often preferred a strict focus on majority rule, neglecting minority interests. 相似文献
10.