Neutron activation analysis of fine grey pottery from Conimbriga,Santa Olaia and Tavarede,Portugal

The concentrations of two major elements and thirteen trace elements in 73 selected sherds of fine grey ware from the Iron Age and Roman period, excavated at Conimbriga, Santa Olaia and Tavarede, Portugal, were determined by instrumental neutron activation analysis. These concentrations were used to calculate distance matrices which were then subjected to cluster analysis employing SAHN and k-means methods, as well as to principal components analysis, to group the sherds according to the overall similarity of their compositional characteristics. The results showed that equivalent groupings appeared regardless of the taxonomic method used. Two major clusters were recognized corresponding to two different sites, namely Conimbriga and Santa Olaia, suggesting that the ceramics from these sites were made locally. No significant differences in compositional patterns were observed between iron age and roman sherds from Conimbriga.     

基于快递物流测度的区域流动空间特征——以江苏省为例

在信息技术推动下,流动空间作为新时期的新空间形式在带来时空压缩效应的同时不断地强化着区域城市间联系,推动着社会经济资源的城际流通。快递物流是互联网交易的虚拟流与快速交通实体流交互产生的物质流动,其代表了流动空间的虚实二元性,是研究流动空间网络特征的有效切入点。以江苏十三个城市为研究区域,以六家物流公司的网站数据为数据来源,采用权重分析法和重力模型方法建立起区域城市的快递物流水平、城市间流动空间连接度及城市快递物流总体评价等三项指标,结合区域流动空间的指标分析发现区域流动空间具有网络一体化、去中心化、扁平化、等级化及点轴式等五大特征,基于流动空间的可视化研究发现江苏省区域城市间关系显示出了一个具有等级特征的多中心扁平化点轴网络,围绕南京、苏州、徐州的都市圈一体化发展态势成为提高区域流动空间流动能力的重要突破方向。     

An investigation of factors determining cycling experience and frequency

A bicycle tourism destination is composed of complexes of different attributes that are crucial for the determination of tourist satisfaction levels. However, the relative impact of sector-specific destination attributes on bicycle touring and leisure cycling experience and frequency has been both poorly understood and studied. This study is an attempt to fill this literature gap by exploring a demand-side perspective on the important contributors of overall satisfaction with cycling experience and the key determinants of cycling frequency. The 28 sector-specific destination attributes were drawn from the relevant literature, and then modified by a panel of industry experts. Using exploratory factor analysis, three destination-specific attribute-level satisfaction factors were identified in descending order of satisfaction degree: ‘provision of signage services,’ ‘provision of safety and emergency services,’ and ‘quality of bicycle routes.’ Among these factors, ‘provision of safety and security services’ and ‘provision of signage services’ were found to be the most important contributors to overall satisfaction. Finally, ‘monthly income’ was proven to be a significant predictor of cycling frequency. This study is of great importance as there is a growing body of evidence that the use of bicycle for leisure, recreation, and tourism is undergoing a resurgence worldwide. The findings of this study may be of interest to scholars in Western countries where bicycle tourism is mature and highly developed and in Asian countries where the sector is at an early stage of development. Since bicycle touring and leisure cycling experience and frequency can be increased by modifying destination marketing and management practices, the government and industry sectors should focus more attention on ensuring the provision of multi-functional grocery and convenience stores along designated bicycle routes, developing an informative and visible signage system for designated bicycle routes, and targeting middle- to high-income bicyclists with diverse bicycle touring and leisure cycling experience options.     

The Hellenistic and Roman Syracuse (Sicily) Fine Pottery Production Explored by Chemical and Petrographic Analysis

The chemical composition and petrographic features of 51 samples of fine pottery selected from the archaeological site of Syracuse have been established by means of optical microscopy and X‐ray fluorescence spectrometry, with the aim of creating a reference group for the ceramics produced in this important Greek colony during the Hellenistic–Roman period. This reference group is constrained by the analysis of six kiln wasters and of raw materials outcropping in the studied area. Among the studied findings, the main part is assignable imputably to local production, while some specimens probably come from Greece and other colonies (Messina and Gela). The Syracuse fine pottery is characterized by inclusions formed mainly by quartz and micaceous and fossiliferous groundmass. The used pastes were more or less purified through the removal of the sandy‐to‐coarse silty granulometric fraction. The multivariate statistical analysis of chemical data permits the identification of production at Syracuse on the basis of comparison with the kiln wasters and the Plio‐Pleistocene clays.     

正规商业与流动商贩的空间分布关系及其影响因素——以北京市朝阳区为例

流动商贩是城市商业的重要组成部分,其空间分布格局与正规商业不相同。本文以正规商业和流动商贩的引力可达性指数,比较两者在同一区位的可达性差异,依此将两者的空间分布关系划分为五种类型,这些类型在空间上呈同心圆、扇形与多核心相结合的分布模式。通过无序多分类logistic回归,发现以人口密度和人口结构为代表的社会力、以国际资本为代表的市场力和具有不同监管强度的政府力均对正规商业与流动商贩的空间分布关系有显著影响。     

北京城市空间认知的影响因素分析

城市空间认知影响因素分析与认知空间格局研究具有同等的重要性。论文基于北京城市空间认知调查问卷数据,引入居民属性等16个变量,利用二值Logistic回归方法,提炼出23个认知地点整体以及交通节点、商场、休闲地三种类型地点的认知影响因素。发现:第一,不同类型地点的认知率影响因素存在异同,其中,存在职住变更是最为显著的共性因子。第二,各类地点中的显著影响因子对认知率的作用大小有明显差异,年龄46-55岁变量是23地点认知率的最重要影响因素,交通节点和商场认知率最重要的影响因素为就业内城四区,而就业地与休闲地距离小于等于6km变量对休闲地认知率的影响最大。第三,各类模型中的影响因素类型不同且影响程度有很大差异,故具有不同属性信息组合的居民认知率不同。     

From Fertility Intention to Fertility Behaviour

Using longitudinal data from Jiangsu Fertility Intention and Behaviour Study (JFIBS) from year 2007 and 2010, this study analyses the fertility intention and behaviour of women who are qualified to have two children from a psychosocial point of view. Based on the Theory of Planned Behaviour, the theoretical framework from fertility intention to fertility behaviour is reconstructed. By observing the phenomenon from the micro-level, the gap between female fertility intention and behaviour and its associated factors are studied. The result shows that, given the situation of being qualified to have two children according to the government's birth control policy, when faced with the choice of whether to have a second child or not, people tend to make their decisions rationally. Attitudes towards fertility, subjective norms, and perceived behaviour control all contribute significantly to the discrepancy between fertility intention and behaviour. In addition, the formation of a concrete birth plan is a major driving force for translating fertility intention into action.     

Elemental Analysis of Ochre Outcrops in Southern British Columbia,Canada

Ochre is a red mineral pigment that was a key element of social and ceremonial practices among cultures of the Pacific Northwest Coast. It is recovered routinely from archaeological excavations, is visible as pigment for pictographs, and is described in the historical record as a trade item and component of ceremonial practices. Despite its ubiquity in the archaeological record, it is difficult to interpret its significance without first understanding the nature of its procurement and distribution. As a step towards identifying procurement practices, trade and resource use, it is necessary to thoroughly characterize ochre outcrops with regard to their intra‐source and regional variability. We analysed ochre from three outcrops using INAA to determine their elemental chemistry. The purpose of this study is threefold: to provide an example of the range of elemental variability within and between outcrops, to illustrate the effect of scale and geomorphological processes on elemental compositions and statistical interpretation, and to create a database of known deposits in southern British Columbia. The results demonstrate that ochre deposits may be differentiated on the basis of their chemistry, and that conservative statistical interpretation needs to be employed to assess true elemental variability within and between ochre deposits and regions.     

基于GIS的西安市城市扩展与模拟研究

本文以西安市为研究区域,以2002年ETM影像和2007年TM影像遥感数据为城市扩展动态变化的主要信息来源,采用逻辑回归模型并结合GIS技术对西安市的城市空间扩展进行模拟。研究选取了道路、河流、地裂缝、地面沉降、人口和GDP等6个因子,建立了西安市城市扩展的逻辑回归模型,并根据所建立的模型对西安市的城市扩展进行了模拟,结果表明,所建立的逻辑回归模型能够较好地模拟西安市的城市扩展,对西安市城市扩展的驱动力具有较强的解释作用,其中对城市扩展影响最重要的因素为距道路距离。     

Logistic增长模型在游客流量预测中的应用——以贵州省绥阳县为例

旅游开发要以市场为导向,以资源为基础,以产品为核心,以效益为目标。游客流量的准确预测对旅游资源的开发具有很重要的指导作用。现在游客流量预测已经有了一个比较成熟的方法系统,但这些方法大多针对于开发得比较成熟且具有一定的游客数据积累的景区。本文以贵州绥阳县双河溶洞国家地质公园为例,尝试将种群增长的Logistic曲线与景区的环境容量相结合的方法,来预测其未来一定时段的游客流量,得到了较为满意的结果,对国内其它类似旅游景区开发具有借鉴意义。