沪宁杭城市群区发展趋势探讨

沪宁杭城市群区发展趋势探讨姚士谋Ｊ．Ｎｉｐｐｅｒ（中国科学院南京地理与湖泊研究所）（德国科隆大学地理所）关键词城市群区,集聚功能,基础设施建设,外向型经济,国际化城市沪宁杭地区位于中国东部沿海居中的地理位置,历史上也是属于经济比较发达与城镇密集的区域...     

与传统对话:民间文化的当代观照——"第五届民间文化青年论坛会议"综述

2007年8月3日,"民间文化青年论坛"第五届会议在京召开。本次会议由民间文化青年论坛和中国俗文学学会主办,中国社会科学院民族文学研究所、文学所民间     

情系河湟沃土耕耘书画天地——浅谈海东地区书画事业的现状与发展

海东地区位于我国黄土高原向青藏高原过渡相衔地带的河湟谷地,土地肥沃,山川壮美,具有悠久的历史和灿烂的文化。在这块可爱的土地上,孕育出了许多文人墨客,他们用勤劳的双手为青海高原的社会经济和民族文化作出了无私的贡献。     

Influence of grinding on the preservation of starch grains from rice

China is a major centre for rice domestication, where starch grain analysis has been widely applied to archaeological grinding tools to gain information about plant use by ancient Chinese societies. However, few rice starch grains have been identified to date. To understand this apparent scarcity of starch grains from rice, dry- and wet-grinding experiments with stone tools were carried out on four types of cereals: rice (Oryza sativa L.), foxtail millet (Setaria italica), Job's tears (Coix lacryma-jobi L.) and barley (Hordeum vulgare L.). The results reveal that dry-grinding produces significant damage to starches to the point where they may be undetected in archaeological samples, while wet-grinding causes only slight morphological changes to the starch grains. Moreover, rice starch grains have the most substantial alterations from dry-grinding, possibly impeding their identification. These findings provide a possible means to explain the relative scarcity of rice starch grains recovered from archaeological grinding tools, which it is suggested was caused by the use of the dry-grinding technique. Therefore, it is suggested that rice starch grains have been likely underrepresented in the archaeological record, and previous interpretations of starch analyses need to be reconsidered.     

A new diminutive euphyllophyte from the Middle Devonian of West Junggar,Xinjiang, China and its evolutionary implications

Xu, H.-H., Wang, Y., Tang, P. & Wang, Y., May 2017. A new diminutive euphyllophyte from the Middle Devonian of West Junggar, Xinjiang, China and its evolutionary implications. Alcheringa 41, 524–531. ISSN 0311-5518.

A diminutive euphyllophyte, Douaphyton levigata gen. et sp. nov., is described from the upper Middle Devonian (Givetian) Hujiersite Formation of West Junggar, Xinjiang, China. The plant consists of more than three orders of axis branching, each axis being less than 2 mm wide. The second-order axes are short, laterally and alternately attached to the main axis. The third-order axes are paired and anisotomously divided, bearing the vegetative appendages or the fertile units. The fertile unit consists of a short recurved axis giving off up to four short pedicels along one side, each of which bears one to four pairs of terminal sporangia. Douaphyton has a three-dimensional branching system that has an intermediate form in the evolutionary context of euphyllophytes and lignophytes. It is also proposed that complex branching developed in multiple groups in the Middle Devonian.

*Hong-He Xu [hhxu@nigpas.ac.cn], Yao Wang [yaowang@nigpas.ac.cn], Peng Tang [pengtang@nigpas.ac.cn], Yi Wang [yiwang@nigpas.ac.cn] State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210,008, PR China. Yao Wang [yaowang@nigpas.ac.cn] University of Science and Technology of China. 96 Jinzhai Road, Hefei, Anhui Province, 230,026, PR China.     

邳州车夫山汉画像石

邳州市车夫山乡汉墓出土的汉画像石内容丰富、气势宏大,反映了汉代贵族们的礼仪、风俗及日常生活,而生动的造型、精细的雕刻则反映了汉代精湛的工艺水平。     

邳州市发现京杭大运河古船闸遗址

１９９５年在邳州市发现的一处京杭大运河古船闸遗址,对于了解明末至清徐州的水利、清运有一定的研究价值。     

城市断裂点理论的验证、扩展及应用

P. D. Converse提出的城市断裂点理论被广泛用来确定城市的空间影响范围和城市经济区的划分。由于该理论仅给出了每两个城市间一个断裂点的计算公式,在实际应用中就出现了多种空间分割方法。分析表明,许多方法是不可行、不严密的。本文通过对比分析Voronoi图和城市断裂点理论的性质,提出了扩展断裂点理论和断裂弧的概念。并证明:在匀质平面区域内,如果两个城市点的权重相同,那么其吸引范围的分界线是这两个城市点连线的垂直平分线;如果它们的权重不同,那么其吸引范围的分界线是一个圆弧;平面内所有断裂点的轨迹分别构成常规Voronoi图和加权Voronoi图,并且每个城市点的权重分别等于其中心性强度值的平方根。最后,以河南省为例进行了城市空间影响范围和城市经济区划分的应用分析。     

《救国时报》揭露南京大屠杀真相述评

1937年12月13日,侵华日军占领南京以后,制造了举世震惊的南京大屠杀。12月20日,中共在法国巴黎出版的《救国时报》对日军的这一残暴行径进行了及时的报道。作者认为,这是目前所知中共在海内外关于南京大屠杀真相的最早披露与宣传,颇具史料价值和研究意义。同时,这一事实表明中文报刊有关南京大屠杀的早期报道具有中共最先、国外早于国内的特点。     

广东省创意阶层集聚的时空演变及其影响因素分析

以广东省21个地级市为例,利用ESDA分析方法和2000-2012年的数据,对广东省创意阶层的空间集聚特征和演变趋势、影响因素进行了初步探索。结果表明:广东省创意阶层的空间分布存在明显差异,主要集中在珠三角地区,东西两翼和粤北山区分布较少,与广东省经济格局较为一致,集聚呈现二元结构;在总体空间格局上,区域创意阶层分布存在显著的空间正相关特征,空间整体差异呈现先缩小后扩大的趋势;各地级市自身与周边地区的相互联系比较微弱,创意阶层高聚集区的辐射和带动作用不明显。从创意阶层空间集聚的影响因素看,不同时间段的显著影响因素存在差异。总体上,科技是持续显著影响广东省创意阶层空间集聚的因素,其次是社会人文因素和城市的工资水平。