黄土高原旱作区新农村建设关键技术分析

黄土高原旱作区是关系国家生态安全、经济发展、"三农"问题的重要区域。围绕黄土高原旱作区新农村建设已积累了广泛的科研成果,但由于缺乏系统性的整合与示范推广,导致收效有限。针对此问题,文章提出了黄土高原旱作区新农村建设的3类关键技术体系:以优化水资源配置为核心的现代集水农业与农业主导产业技术体系,以类型化为核心的新农村绿色生态社区规划建设技术体系,以及以循环农业模式为核心的农村环境综合治理与可再生能源利用技术体系,并逐一进行了分析。     

长株潭城市群都市区各类城市建设用地的时空变化研究

以长株潭城市群的都市区为研究对象,通过收集1990-2019年中7个年份的8类城市建设用地的空间分布数据,建立空间数据库,并依托各类城市建设用地的增量、对城市群及其片区的贡献率、在城市群中的扩张程度分布的测算,归纳各类城市建设用地时空变化的特征与规律.结果表明:1990-2019年,长株潭城市群都市区的城市建设用地扩张...     

FEDERAL TAX POLICY DEVELOPMENTS AFFECTING THE CONSERVATION OF CRITICAL LANDS: GROWING RESTRAINTS ON LOCAL INITIATIVES

This commentary touches upon certain aspects of federal tax policy that impact on land conservation in the United States. The focus is on the development and use of tax incentives to encourage private or non-governmental efforts to protect unique wildlife specie habitat, farmlands, historic areas, scenic landscapes, and recreational resources. In recent years tax incentives favored private conservation initiatives; recent legislative and administrative developments introduced a high degree of federal supervision.     

加拉帕戈斯 伊甸园进化论

汪洋中的火山是它强大的心脏;泻湖是它亮蓝色的眼睛,眺望着亘古不变的日升月落;季风带来种子和雨水,在时间与大海的浩瀚里,进化出最纯真的伊甸。     

LÖWITH,LÖWITH'S HEIDEGGER,AND THE UNITY OF HISTORY

This article is about the problem of the unity of history as seen through the writings of Karl Löwith. By “unity of history” I understand the notion that all history constitutes one and only one range of kinds of objects and/or one field of knowledge. The article argues that the problem of the unity of history—though often neglected as a matter of mere argumentative infrastructure—is central to a number of wider problems, most prominently the possibility of a plural understanding of historicity and the possibility of ultimately avoiding a unified historical teleology. The article revisits Löwith's writings and proposes a variety of novel interpretations with the aim of evincing the centrality, and of exploring diverse aspects, of the problematic of the unity of history. This problematic is shown to have informed Löwith's work on the secularization thesis as well as his debate with Hans Blumenberg. The foundations of Löwith's discussion of the problem are pursued across his ambivalent critique and appropriation of Heidegger's model of an ontology of historicity as marked by inevitable internal conflict and thus disunity. The paper reconstructs the manner in which, after the Second World War, Löwith's philosophy of history sought to salvage basic traits of the Heideggerian model when it tried to establish the possibility of plural historicity from a notion of the natural cosmos. It is demonstrated that the motives for this salvage operation ultimately extended beyond the problem of Löwith's reception of Heidegger and concerned the possibility of continuing any debate on the philosophy of history.     

互联网技术应用对零售业空间组织影响研究进展

互联网技术应用对零售业空间组织的影响已成为当今学术界研究热点。本文利用文献资料法和对比分析法,梳理了国内外互联网技术应用对零售业空间组织结构、零售企业区位选择与布局、市场空间等方面的影响研究,并提出了未来人文地理学须进一步强化的研究内容。结果表明：20世纪90年代中期以来,互联网技术应用对零售业空间组织影响的研究成果日益丰富,且涉及到经济地理学和商业学等学科,研究方法主要以定性为主,且定量研究日益增多,但对互联网技术应用对传统零售业区位选择和销售腹地的影响、中小网络零售企业空间组织、运输距离对网络零售企业销售空间影响以及出口跨境网络零售企业销售空间格局等方面研究还需完善,未来研究应注重吸收其他学科理论和方法,强化实证研究结论的科学性。     

尼罗河畔文明物语

<正>尼罗河是埃及的母亲河,准确说更是生命线,一条郁郁葱葱的绿色生命线,置于茫茫的沙漠之中。埃及90%的人口,生活在这全国1/30国土的尼罗河畔。这条河见证了埃及古老文明的形成和兴旺,主导了两岸生灵的繁荣与衰落。跟随这条河,人们在历史的时空穿梭,跨过河上河下,遍看古代现代,游走神庙田舍,拥抱沙漠绿洲。我们在阿斯旺下火车,行李直接就送到斯蒂芬妮游轮了,我们要在尼罗河上航行三日,这是期盼许久的心念。有多久呢?算起来有40年了。自从1978年电影《尼罗河上的惨案》     

社区分化-整合运动一般规律探讨

社区是社会的子系统,其运动发展极其复杂。本文借助系统理论中描述系统运动发展的一对概念-分化与整合建立起社区分化和社区整合概念,并通过从社会层面、区域层面、空间连续分布的相邻社区层面分析影响社区分化一整合的外部因素和社区分化一整合的基本内容及其相互关系,探讨社区运动发展的一般规律,最后结合我国社区发展的实际概况论述了社区分化一整合运动规律在我国的特殊表现。     

THE INFLUENCE OF GEOLOGY ON THE MAGNETIC SUSCEPTIBILITY OF SOILS ON ARCHAEOLOGICAL SITES

A heating mechanism for the enhancement of the magnetic susceptibility of soils on archaeological sites is assumed. Data for the iron oxide concentration which is available for conversion to the strongly ferrimagnetic form is presented for soils derived from a wide range of geological strata. These data are then used, in conjunction with the concept of the fractional conversion of the iron oxide that has occurred as a result of fires associated with human habitation, to explain the wide range of soil susceptibilities observed on archaeological sites. The feasibility of employing magnetic surveying techniques for the location of buried features on archaeological sites, situated on the different geological strata, is then discussed.     

关于燕下都故城宫殿建筑几个问题的探索与研究

<正> 燕下都故城位于今河北省易县东南的北易水和中易水之间。它北、西和西南山峦环抱,东南面向华北大平原,正处于从上都——蓟(今北京市)到赵、齐等国的咽喉地带,是战国时期著名的陪都之一。 战国时期,随着燕国社会经济的发展和军事力量的增长,为了争雄中原,燕国的统治者就逐渐加强了对其南部城邑——武阳城的营建。到战国中期前后,武阳城已发展成为燕国南方的政治、经济、军事和文化中心,成为战国时期燕国的重要陪都之一,并直接称之为“燕下都”。 这种陪都制度,是有其渊源流长的历史进程的。并不为燕国所独有。周在灭商以前,就有丰、镐二京。《诗·大雅·文王有声》云:“既伐于崇,作邑于丰”,意即文王伐崇侯虎后,从岐下徙都于丰。“考卜维王,宅是镐京”,意即武王虽迁都于镐,而丰仍然是全国的政治、     

中华民国开国纪念币银元始铸纪

1911年12月2日,苏浙联军攻克了南京。12月8日,江苏都督府任命余成烈为度支部江宁造币分厂总理,林景为协理。维时军需孔殷,日促拨款,势难停工以待新币式之颁布。是以12月11日,该厂沿用旧模重新开铸“大清银币”银元①。 1912年1月,原度支部江宁造币分厂改名为中华民国江南造币厂,刊用了木质关     

THE BOXER ON THE ROOF OF THE WORLD

正Though the Tibet boxing team might be rarely heard of,Sonam Norbu,a national master sportsman from the first Tibet boxing team with a weight of 52 kilograms,has won a gold medal for the 2011 National Youth Fight,a bronze medal for the 2012 National Championship,and another bronze medal for the 2013 National Championship.The Tibet boxing team is still young today.Asked why he chose to be a boxer,     

布币流通的历史解释

中国的货币常常铸有地名,这些看似零散纷乱的古地名,应是有系统地组合,例如,以单一国家而言,相同地点分别刻铸在不同类型布币上;全面性来看,将这些地名回归地图后,它们有规律地排列,意味着城市发展具有脉络依寻,它可能基于某种因素或优势而发达壮大,否则,地名不会集中在某些区域。货币是商业的产物,具有流通性,今日在非铸币国挖掘出他区货币,正是流通性之展延。不同体系的货币也会彼此影