利用X-CT和数字图像相关法对遗址反复干湿导致的劣化机制进行基础研究

此研究是以石材和土壤所构成的考古遗址为主要研究对象。在确定石材和土壤的渗透性下,通过数字体积相关法(DVC)和数字图像相关法(DIC)对干湿劣化的环境条件进行定量的评估,并提出控制这种劣化发生的环境调整方法。 为了收集基本数据,通过DIC及X射线成像技术分析从湿润到干燥的过程中丰浦硅砂的位移量实验,并在实验中,使用DIC计算样品在收缩应力下的变形分布。此外,本次实验以铁粉作为示踪剂添加至样品中,并以铁粉作为参考点计算丰浦硅砂特定范围的移动量,借此评估铁粉作为示踪剂的适用性及精确性。结果表明,通过拍摄干燥前后样品的X射线图像,并用DIC进行分析可以计算出干燥前后的变形分布。在样品中添加示踪剂也被发现有助于分析样品局部区域的移动方向及移动量。因此通过此基本数据的检验,相信将来通过X射线计算机断层扫描(X-CT)及数字体积相关法(DVC)的应用,可以用来阐明反复干湿风化的劣化机制。     

维摩诘“隐几”图像考

通过对隐几正名、形制和源流的考定,可以认为隐几是顾恺之所创维摩诘像的重要标志。南北朝时期,南方维摩诘"隐几"图像传至北方地区,并在流传过程中出现图像异变现象。北朝后期,隐几渐趋成为道教老君像的图像标志,并一直延续至唐宋以后。     

Applying the technique of image classification to climate science: the case of Andalusia (Spain)

This paper proposes an empirical climate classification method based on the application of multivariate statistics. In this method, the technique of supervised and unsupervised image classification is used to classify the data and define climatic units. envi software is used to perform the image classification, specifically, the Iterative Self‐Organizing Data Analysis Technique algorithm. Supervised classification is also applied based on reference variables, fundamental parameters and a classifier. The obtained results display greater objectivity, reliability, operability, accessibility and reproducibility than previous climate classifications devised for the region of Andalusia (Spain), taking into account that these previous classifications were not based on quantitative criteria.     

THE LAST EUROPEAN: A PLEA FOR A RE‐POLITICIZED BENJAMIN

This review of Alexander Gelley's captivating book follows its attempt to respond to Benjamin's plea to “expound the nineteenth century” and liberate us “from the stupendous forces of history,” using aisthesis, “a weak messianic force,” and “dream visions.” Taking the cue from Gelley's reference to Benjamin's rebellion against “a secret agreement between past generations and the present one” (156), this review attempts to open up the context and to wonder about “the secret agreement” between recent Benjamin scholarship and its own sense of the past. The review pleads with future Benjaminians to start asking questions relating to the twentieth century, and attempts to consider the relevance of Benjaminia for current political analysis and recent trends in critical studies.     

New Light on the Medieval Gough Map of Britain

Remarkably little is known about the earliest surviving separate-sheet medieval map of Britain that takes its name from its former owner, Richard Gough (1735–1809), and that has been variously dated to between 1300 and 1400, and later. It presents a sophisticated cartographical image at a time when detailed maps of individual regions were almost unknown in Europe, yet nothing is agreed about its possible origins, context (ecclesiastical or secular), or why and how it was compiled. In the belief that historical interpretation has to stem from an intimate knowledge of the map as artefact—the state of the parchment, nature of the inks, palaeography—as well as image, an informal study group of historians and scientists (the Gough Map Panel) was convened in 2012 to examine the map through high resolution digital reproduction, hyperspectral analysis, three-dimensional analysis and Raman pigment analysis. Although the study is still ongoing, much that is new has been discovered, notably about the way features were marked on the map, Gough’s application to the map of a damaging reagent to render place-names readable, and the extent to which the original map (now dated to c.1400), although never completed, was nonetheless reworked on two different occasions in the fifteenth century, effectively creating two further maps. These and other findings are summarized here to encourage the further study of the map’s features that is needed before it can be fully understood.     

旅游地形象策划研究——以广东省台山市(县)为例

本文以广东省台山市(县)为例,从县域的空间角度出发,在研究不同空间尺度的旅游目的地形象策划的共性和个性的基础上,提出该地域尺度类型的旅游地形象分析和策划的原则和依据,并结合台山市(县)的地理文脉和资源特色,对台山市(县)旅游形象系统作了初步探讨。     

99世博会对昆明城市形象的影响研究

使用问卷调查数据,从世博会的形象、世博园与昆明的形象、世博园在潜在游客中的形象位置、世博园在昆明景区中的相对形象地位等四个方面研究'99昆明世博会对昆明城市形象的影响问题,通过量化研究,得出世博会和世博园都对昆明的形象产生了较好的推动作用、世博会结束后世博园的形象与世博会的形象认知产生了分离现象的结论,分析了世博园尚未成为来昆游客游览和旅行社组织旅游线路首选景点的原因。     

感知距离对旅游目的地之形象影响的分析——以五大旅游客源城市游客对苏州周庄旅游形象的感知为例

旅游目的地形象是影响旅游行为的一个重要因素,本文以苏州周庄为例,选择距周庄不同距离的五个城市(上海、南京、合肥、济南、成都)作为样本地,采用定量方法对周庄的旅游形象及距离对旅游形象的影响进行了调查。     

镜头压力下的东道主——西方学界关于旅游地原住民摄影态度的研究述评

旅游者常以照相机镜头表达自己的旅游欲求,行使其作为"观看者"和"拍摄者"(Photographer)的特权;旅游地土著居民也以通过在镜头前的反应表达其"被观看者"和"被拍摄者"(Photographee)的权力。二十余年来,西方学者对镜头压力下的东道主的态度与行为做了深刻剖析,指出他们有以下三个特征:恐惧与反感,谈判,以及将游客模式化。通过这几种方式,东道主得以建立合适的主客关系,即,照相机的限定性使用不会影响游客兴趣,也没有使旅游经济收益下降,同时当地人又建立起自己相对的隐私空间,一定程度地保护了自身文化免受外来游客的冲击。     

Images of the third world: teaching a geography of the third world

Abstract

This paper focuses on how to teach undergraduate students to analyse critically various received images of the Third World. This is achieved through the use of a detailed practical exercise which is based on poster, newspaper and map representation of the Third World. The concepts of identity, positionality and representation are reviewed and there is a discussion of how an awareness of these concepts should help students understand the influencing power of stereotypical images of distant others.