基于全局主成分分析的我国省级行政区城市化水平综合评价

根据城市化的内涵,选取13个指标,以1995年、2000年和2005年3个年份全国31个省级行政区为评价对象,构成城市化综合评价立体时序数据表;采用全局主成分分析方法,对其城市化发展水平进行综合定量评价。共提取三个主成分,分别反映人口结构及城市景观变化、城镇居民收入及消费水平、城市基础设施建设方面的信息。分析结果表明,我国城市化发展质量和速度的区域差异明显;在分析期内,城市化发展的总体质量有所提高;城市内部主要指标之间的协调性较好。     

宋代铸造的唐代年号镜——仿古和逐利影响下的宋代工艺美术个案

自1945年梅原末治《唐镜大观》著录两面"永徽元年"铜镜以来,考古出土和文物征集发现多件带有"贞观元年""贞观十六年""永徽元年""上元二年""大和元年"等唐代年号的铜镜。这些铜镜因有明确的纪年,在唐代铜镜艺术研究中曾被作为标准器对待。但这些铜镜在造型、铭文书体、纹饰等方面,皆与唐代铜镜有异,而与宋代铜镜相合。本文对5种8件带有唐代年号的铜镜予以重新考察,认为它们与一般宋代的仿唐镜不同,一是没有铸镜作坊铭或是姓氏铭;二是铜质精良;三是花纹清晰。因此,这8件器物应为宋代铸造的仿唐镜。     

Are the home values and property tax burdens of permanent homeowners affected by growth in housing rentals and second homes: Evidence based on big data from Florida

Homeowners who make their homes their primary residence have resisted the entry of rentals into their neighborhoods and cities. Possible reasons underlying this resistance are that rentals reduce the property values, increase the property tax burdens, and raise the price of public services for these homeowners. We relate the market values of single-family homes occupied by permanent homeowners, the effective property tax rate of these homeowners, and the tax price they pay for public services to shifts in their city's housing units toward a variety of different types of rentals and second homes. Our analysis is based on large panels of Florida homes containing hundreds of thousands and millions of observations. Our results show that increases in the share of a city's housing units used as rentals or second homes reduce the home values, increase the property tax burdens, and raise the public services prices of homeowners who permanently reside in single-family homes. Impacts vary in magnitude among single-family, condominium, and mobile homes used as rentals and second homes. Estimated impacts are the strongest for share increases in single-family rentals and second homes.     

降雨对榆阳区明长城单体建筑破坏模式的试验研究

前期调查分析可知,降雨对榆阳区明长城单体建筑的破坏形式包括水力侵蚀和重力侵蚀两大类,主要影响因素为降雨特征、遗址保存形态和遗址土的性质。为了进一步了解降雨对该类土遗址的破坏方式及主要影响因素作用特点,按照相似理论要求设计模型试验,研究了降雨对榆阳区明长城单体建筑的破坏模式。试验结果表明,降雨对遗址模型的破坏方式与前期调查分析结果基本一致,水力侵蚀方式有冲沟侵蚀、片流面蚀、流水淘蚀和流水冲蚀,重力侵蚀方式有坍塌和滑塌。一般A型暴雨条件下,各种水力侵蚀方式均有发生,重力侵蚀发生次数相对较少;B型暴雨条件下,主要发生片流面蚀,重力侵蚀破坏发生次数较多。通过模型试验得出的降雨对遗址模型的破坏方式及发生特点方面的结论,可以在一定程度上为降雨对该类遗址破坏的评估和防治提供参考。     

论北宋的封桩缺额禁军钱制度

王安石为解决团教保甲、训练将兵的经费问题,赋予封存缺额禁军俸廪的北宋惯例以新的意义,建议神宗实行封桩缺额禁军钱制度,从而收到了训练保甲、将兵“未尝费户部一钱”的一定效果。元祐占旧党执政,曾有意将其取消,只是迫于经济压力而未果。绍圣以后,虽然“民兵亦衰”,封桩缺额禁军钱却畸形发展,至徽宗宣和年间造成了禁军严重缺额的恶果,以至于金军南下时素号“冗兵”的北宋竟然无大军抵御,这却是王安石始料未及的。     

中国银行与南京国民政府早期关系

中国银行从民国初年成立后即发挥着中央银行的重要作用,1928年南京国民政府对中国银行的第一次改组,使得中国银行由国家银行转制为国际汇兑专业银行,1935年的第二次改组后又使得中国银行成为国民党“四行二局”金融统制体系的重要组成部分。这两次改组对中国银行的性质和地位的变化产生了决定性的影响,也比较突出地体现了旧中国金融业与中央政府关系的演变过程。     

合作化时期西南地区初级农业生产合作社收益分配探析

初级农业生产合作社的收益分配是全面体现合作社性质和优越性的重要标志。合作化时期,西南地区根据中央有关初级社收益分配的指示精神和多民族地区的实际,坚持少取多分、按劳取酬和民族团结的原则,正确地处理社与社员之间的关系,努力提高劳动分配在初级社收益分配中的比例,推动互助合作运动的进一步发展。土地和劳动分配比例确立过程及其变动趋势决定着初级社生产发展的规模和方向,对于深入认识合作化的进程具有相当重要的意义。     

地面核磁共振方法在石质文物保护中的应用

石质文物破坏问题不仅在于人为破坏和表面污染,更多来自自然因素对文物的破坏,例如,日晒雨淋、风沙吹蚀、地表水的冲刷、地震、地下水的侵蚀溶蚀。为对第六批全国重点文物保护单位阳华岩摩崖石刻露天石质文物病害进行探查,采用无损探测的地面核磁共振方法和探地雷达方法,直接找水的地面核磁共振方法成功探测出摩崖石刻依附岩体地层含水分布状况。探地雷达方法探测出依附岩山体内岩溶、裂隙的发育状况。两种方法探测结果发现,石刻依附岩体内岩溶、裂隙发育,部分区域岩溶裂隙带已成为地下水汇聚场所或流通通道,对阳华岩摩崖石刻构成了极为严峻的侵蚀威胁。两种方法解释结果互为验证,研究结果为阳华岩摩崖石刻的病害治理和保护提供了宝贵的基础资料。     

Identifying the Impacts of Land-Use Spatial Patterns on Street-Network Accessibility Using Geospatial Methods

While the land use-street network nexus is well acknowledged, evidence for the one-way impacts of land-use patterns on street accessibility is still inadequate. The measurements of land-use patterns and street accessibility lack systematic knowledge. Their empirical correlations also lack geographical variability, constraining site-specific land-use practices. Therefore, this study overcame the aforementioned limitations by examining the two-level spatial models to formulate accessibility-oriented land plans, using a well-developed Chinese city as an example. Firstly, two landscape metrics—Euclidean Nearest-Neighbor Distance (ENN) and Similarity Index (SIMI)—were used to quantify the intra- and inter-land-use configurations, respectively. Both city-level and local accessibility were measured using spatial design network analysis. Performing both ordinary least squares (OLS) and geographically weighted regression (GWR) models, results identified the statistically significant effects of inter-land-use patterns on two-level street accessibility. An exception was that land-use configurations within residential and industrial regions were irrelevant to street accessibility. We also found GWR was a better-fitting model than OLS when estimating locally-varied accessibility, suggesting hierarchical multiscale land-use planning. Overall, locally heterogeneous evidence in this study can substantialize land use-street network interactions and support the decision-making and implementation of place-specific accessibility-oriented land use.     

中国史前龟文化研究综论

本文主要从史前龟甲器的用途、龟灵崇拜的内涵、龟卜文化三个方面对目前中国龟文化的研究现状进行梳理,在此基础上对中国龟文化今后的研究提出了一些看法.