农村居民点用地整治潜力测算研究——以广东省五华县为例

以广东省五华县为例,以行政村为单元,在政策指标测算法的基础上,从自然环境状况、经济保障能力和社会因素等3方面构建理论潜力修正模型,将理论潜力修正为可实现潜力,并根据土地适宜性评价估算增加耕地潜力,以期为科学编制农村土地整治规划提供依据。研究表明,五华县农村居民点用地布局分散、规模小、空间差异显著,呈现出沿河谷、沿交通线路分布的典型特征。到2020年,农村居民点整治理论潜力为5683.91 hm²,北部村庄的整治潜力较大;可实现潜力修正系数为0.54,与理论潜力相差较大,各行政村之间差异明显;新增耕地潜力系数介于0.32-0.94,预计新增耕地1943.41 hm²,琴江、五华河沿线村庄的新增耕地潜力较大。建议实施差别化的农村居民点整治对策,推进五华县农村土地整治。     

陶器古剂量线性回归方法和误差评估

陶器古剂量P包含等效剂量Q和超线性修正I两个部分,为了提高古剂量测量的准确性,正确地计算古剂量的测量误差,本工作测试了10个古陶片样品,利用线性回归方法计算等效剂量Q和超线性修正I,并对不同的古剂量计算方法进行误差分析和评估。研究表明,线性回归方法(包括归平法和平归法)计算陶器古剂量的准确性优于目前采用的常规法;通过几种不同方法的误差比较和分析,归平法所得误差较其它方法更严谨、合理。该研究在提高古剂量测量的准确性和正确计算古剂量的测量误差两方面具有重要的意义,使得古剂量的测量更加合理,符合数理统计规律。     

Introduction and Historical Context to the Archaeology of Seventeenth and Eighteenth Century Almshouses

This introduction discusses both the western cultural context of, and research issues behind, the following three articles on institutions founded to house the poor in Holland, England, and their American colonies. It also discusses the connections between this volume on colonial-era institutions for the poor and the previous volume on nineteenth century asylums and prisons.     

Chemical profiling of a 130-year-old manuscript reveals the early use of synthetic lead white correction fluid in ancient China

In practice, correction fluid to mask text errors has been continuously in demand since papers began to be predominantly used since the late fourth century AD in ancient China. However, research on the trajectory of correction fluid composition has been largely overlooked and has not been revealed currently. In this study, a multianalytical approach was used to investigate a thin whiteout layer, used as correction fluids applied in 1890, on a book page from the famous Imperial Encyclopedia (1726 bronze-type repaint version). The results showed that the white layer was composed of hydrocerussite ((PbCO₃)₂·Pb (OH)₂) in mixture with plant oil and a tiny portion of calcium carbonate, which had been applied to conceal the originally printed Chinese characters upon which they were rewritten in preparing photographic negatives for reprinting using photolithography. The analysis results also suggest that lead white was likely domestically made using a local lead ore source by the wet synthetic process. Considering the prolonged use of orpiment (As₂S₃) as a correction fluid ingredient in Chinese tradition, a trajectory to lead white suggests not only advances in pulping and papermaking technology but also a shift in cultural habits and aesthetic psychology in the late Qing Dynasty.     

“四清”运动后期“二十三条”在山东曲阜的宣传与贯彻

1965年1月公布的"二十三条"是一个包含着许多"纠偏"条文而同时使"左"倾理论有了新发展的重要文件。"二十三条"在曲阜宣传与贯彻的过程中,文件中关于运动的性质特别是运动重点的规定,并未引起重视和关注,而文件中有关"纠偏"的一些具体政策却基本上都落实到位,从而使前一阶段运动中出现的"左"倾偏差有了较大程度的纠正。不过,在当时的时代背景下,"二十三条"毕竟没有也不可能跳出"以阶级斗争为纲"指导思想的窠臼,因此,依据该文件精神进行的纠"左"仍有相当的局限性。     

生态系统服务对区域经济增长的影响研究——以黑龙江省为例

以净初级生产力作为生态系统服务的综合测量指标,在经典柯布道格拉斯生产函数的基础上,运用协整与误差修正模型对1986-2010年黑龙江省生态系统服务对区域经济增长的影响进行了分析,并评估了净初级生产力的边际价格。结果表明,黑龙江省生态系统服务对区域经济增长具有明显的促进作用,净初级生产力每提高1%促进真实GDP增长0.0257%;在生态系统服务的影响下,黑龙江省经济系统以每年1.8%的速率将系统波动产生的非均衡状态向长期均衡状态调整,说明生态系统服务在促进经济增长的同时也保障了经济体系的稳定运行;在误差修正模型基础上得到的黑龙江省净初级生产力的边际价格为255.1元/106kgC(以1952年价格为基准),此价格主要受净初级生产力产出弹性的影响。     

《史记》校点本讹误辨正

中华书局校点本《史记》是人们学习和开展《史记》研究工作最常用的本,但也不无可商之处。本就校点本底本之讹衍脱倒、漏校及误校、标点不当等疑误之处,在前人和旧作的基础上再检出30余条,进行辨正,供读参考。     

《梁书》点校辨正

中华书局点校本《梁书》被认为是“目前的最佳版本”,但存在的问题颇为不少。本文仅就其标点、校勘方面的问题举21例予以辨正。     

张家山汉简《奏谳书》释文补正举隅

张家山汉简《奏谳书》释文中存在如错释、漏释、缺文补释不当以及原简文中讹、脱、衍文未予校出等失误与不足。本文就笔者翻检所及,共二十七处,提出不同的补正意见。     

Reduction of topography effect in inductive electromagnetic profiles: application on coastal sambaqui (shell mound) archaeological site in Santa Catarina state, Brazil

We present results of electrical conductivity profiles obtained with inductive electromagnetic geophysical method in Santa Marta archaeological site, Santa Catarina State, southern Brazil. This site is a sambaqui (shell mound), in which several human occupation remains are found during pre-colonial period such as buried lithic and bone artifacts, fire-place, etc. Most of these mounds include as well many human burials, which, in many cases, point to funerary ritual as a main agency for mound building. A set of profiles of apparent electrical conductivity and magnetic susceptibility was acquired in two sites aiming the identification of geophysical anomalies with potential interest for excavation. To enhance conductivity data, we applied an effective procedure to remove topographical effects in the apparent conductivity measurements, which are rather conditioned by the presence of a variable water table depth or conductive sediment layer. A linear dependence among conductivity values and the site elevation provided a simple linear model to remove the influence of topography. Corrected electric conductivity maps substantially improved the definition of anomalies, many of them rather subtle in raw data images. Corrected maps also show a better adherence with magnetic susceptibility maps, both of them identifying archaeological structures of interest: a well-structured fire-place and a concentration of ceramic fragments.