面向规划建设的村庄分类指标体系研究

我国村庄类型多样,规划建设需要分类指导,但全国层面上综合、简便、易推广的村庄分类指标和方法仍有待探索。在目标导向、有机综合、简明可操作及适度弹性原则的指导下,从总体和结构两方面建立包括自然禀赋、区位条件、村庄规模、形态结构、人口结构、经济结构和用地结构的村庄类型基础指标体系;并基于全国7省48个行政村样本数据,采用聚类分析、KW检验和主成分分析提取8个简便易行的正交特征指标;据此识别了平原传统农业村、山区传统农林村、养殖专业村、远山特色农业村、城郊非农产业村和平原非农产业村等典型村庄类型,总结了各类型特征及规划建设重点,证实了指标和方法的科学性和适用性,为我国村庄规划建设的分类指导提供了方法论基础。     

哈大巨型城市带要素集聚分异与空间极化格局

在界定空间极化概念的基础上,应用均匀度指数、基尼系数、崔王指数分析城市带内部要素集聚程度分异及空间极化格局,结论如下：①1990-2014 年哈大巨型城市带要素集聚程度时空分异明显,"核心-边缘"结构逐步显现,城市带内部基于要素集聚程度的哈长与辽中南次区域逐渐发育;②城市带内部要素集聚存在显著的空间极化,空间极化的"四城市"格局已经形成;③城市发展内源力是哈大巨型城市带整体空间极化的主要影响因素,城市投资强度和经济发展水平对城市带空间极化格局演变的影响也较显著。城市投资强度与吸引力差异是哈长次区域空间极化分异的重要影响因素,而城市发展内源力是影响辽中南次区域空间极化的主要因素。     

基于光谱增强指数与LeNet-5的古书画褪色文字提取与识别

古书画中所记载的文字是了解历史的珍贵资料,对褪色文字进行提取和识别是挖掘和展示历史价值的基础。本工作首次提出基于光谱增强指数与LeNet-5相结合的古书画褪色文字提取与识别方法：利用高光谱成像无损检测、光谱范围广等优点,获取古书画的高光谱数据,分析文字与背景的光谱特征,构建字迹增强指数,实现古书画中褪色文字的增强;构建LeNet-5卷积神经网络,利用手写汉字集进行训练,对密度分割后的字迹图像进行自动识别。以清代画家张士保所作《论道图》中部分褪色文字为例进行了验证,文字识别的正确率为70.8%。结果表明,本工作所提出方法可有效提高古书画褪色文字提取与识别的智能化程度。     

中国6大热点城市入境旅游消费结构比较研究

本文以北京、上海、广州等中国6大旅游热点城市为研究对象,收集1995—2004年的相关统计数据,引入旅游消费结构高级化指数β,对6城市的入境旅游消费结构进行横向及纵向比较研究,得出如下结论：（1）一个地区的旅游消费结构由包括地区总体发展状况、消费水平、旅游产品类型等在内的多种因素决定,因此,不能孤立地、绝对地以旅游消费结构（以β值反映）为指标来衡量地区旅游产业的成熟度,而应对其进行动态的考察;（2）一个地区旅游消费结构的变化（β值变化）与地区旅游业的发展通常呈现一定的正相关性,一个地区的β线对地区旅游业发展具有重要的指示作用;（3）旅游消费结构的演变状况（β值的变化）在一定程度上既反映了地区宏观背景所提供给旅游业的发展后劲,也反映了旅游业对地区其它产业的相关带动作用。     

Preliminary Assessment on Seismic Vulnerability of Masonry Churches in Central Chile

ABSTRACT

The 2010 Maule Chile earthquake (Mw 8.8) caused extensive structural damage to the built heritage. In particular, the poor seismic performance of a set of unreinforced masonry (URM) churches highlighted the need to implement protective and safety strategies in order to preserve these buildings which exhibit unique constructive and typological features, as a result of a combination of Chilean and European construction cultures.

The peculiarity of this heritage and the high seismic hazard of Chilean territory have motivated the present study which aims to apply systematic procedures to assess the seismic vulnerability of these buildings. This article is of archival nature and presents a complete database generated from the geometrical, constructive, and structural characteristics of a representative stock of 106 churches located in central Chile, with the goal of proposing fragility curves to be used in seismic risk assessment. Considering variables related with geometrical, architectonic, and stylistic features, as well as damage levels for the 2010 Maule earthquake, this church sample is classified into three homogenous groups: colonial, neo-classic, and neo-gothic. Moreover, a preliminary qualitative assessment of the seismic capacity of these structures is provided using a survey and analysis of geometric indices for each of the three selected groups.     

Modern human,early modern human and Neanderthal limb proportions

The limb proportions of 686 subjects (461 men and 225 women) from five ethnic groups (White, Inuit, Gurkha, Bantu, San) have been compared. Stature, limb and skeletal measurements were taken directly from the subjects by one observer. The brachial and crural indices of the Whites were markedly smaller (lower) than those of the other populations. The crural indices of the Inuit were similar to those of the two African populations, but this may be an artefact from relatively small numbers for the Inuit population. There is no sexual dimorphism for the brachial index, but men have larger (higher) crural indices than women, a finding which probably relates to the relatively broad pelvises and consequently long femurs of women. The two African populations have long limb lengths standardized for height compared to the Gurkha and Inuit populations, with the Whites intermediate. This finding is consistent with Bergmann's thermoregulatory rule. The correlations between distal abbreviation and limb abbreviation for both the upper and lower limbs are poor and negative. Relatively long limbs tend to have smaller distal segments than relatively short limbs and for the legs this may constitute a safeguard for the integrity of the medial and cruciate ligaments of the knee. For these five modern populations distal abbreviation cannot be used as a proxy for limb abbreviation and there is no justification for linking distal abbreviation with climatic selection. Skeletal data relating to nine Neanderthal and 25 early modern humans have also been analysed. The analysis confirms marked limb and distal abbreviation for the Neanderthals compared to early and contemporary modern humans, but this conclusion presupposes that the taxonomic classes are correct and that limb proportions were not used originally as a class discriminant. For these archaic populations there is a moderate positive correlation between lower limb abbreviation and distal abbreviation, but the numbers are small and the confidence intervals very wide. In view of the findings for modern populations, and until more relevant fossils are available, it is probably unwise to use the crural index as a proxy for limb abbreviation in archaic populations. Copyright © 1999 John Wiley & Sons, Ltd.     

Developing a Synthetic Index of Land Vulnerability to Drought and Desertification

This paper develops an index of the vulnerability of land to drought and desertification (LVI) for Italy. The index takes into account changes in climate, land use, vegetation cover, soil properties, and population during the period 1990–2000. The LVI was built up through a multivariate approach aimed at assessing the importance of the various indicators included in the synthetic index. Increasing land vulnerability was observed during this time, especially in dry areas of the southern regions. This is interpreted as a consequence of land management practices, agricultural intensification, population pressure, and bio-physical degradation. The LVI can be used in an integrated, decision-support system to evaluate the impact of mitigation policies in rural environments.     

Rare animals at a Mississippian chiefly compound: the Irene Mound site (9CH1), Georgia,USA

ABSTRACT

The Irene Mound site (9CH1) was a Middle and Late Mississippian site (ca. AD 1150–1450) situated on a bluff overlooking the lower Savannah River, Georgia (USA), a few kilometers upstream from the Atlantic Ocean. The 2.4 ha site consisted of a sequence of superimposed layers referred to as temple mounds, as well as a burial mound, a rotunda, a few residences, and other structures. It is interpreted as the residence of a chiefly lineage. The presence of animals rare or absent in other precolonial coastal assemblages distinguishes the Irene assemblage from others along the coast. Some of the animals exhibit atypical, even dangerous, behavior, others have elaborate feathers or fine fur, and many are notable coastal fishers. White-tailed deer (Odocoileus virginianus) specimens in the assemblage are dominated by portions from the body. Irene may provide a zooarchaeological standard for assessing evidence of site functions and status in other coastal assemblages.