On fitting certain closed convex curves to archaeological point data using an interactive graphics terminal

A graphics terminal displays the archaeological point data superimposed on the closed curve together with numerical information relating to the accuracy of fit. Human logic then shortcuts the otherwise extensive computer capacity necessary for initial refinement. The Powell minimization technique is then used to obtain the “best” fit.The underlying mathematics, an outline of the implementation and several examples are presented.     

The Southern Conservative Thought of John C. Calhoun and the Cultural Foundations of the Canadian Identity

Besides the largely ignored fact of general Canadian support for the Southern Confederacy during the American Civil War, the consociational dimensions of Canadian Confederation, as something opposed to American unionism in cultural terms, finds its historical roots legitimized in the Southern conservative writings of John C. Calhoun. It is the tension between an institutionally entrenched foundation of consociational pluralism and growing urban cosmopolitanism within Canadian history that has defined the debates and divides over the meaning of the Canadian identity, just as it is. Alternatively it is the tension between enforced constitutionalist unionism and consociational cultural tradition within the American South that has largely defined their historical experience. Both Canada and the American South find the tensions of their cultural identities rooted in the consociational values originally laid out by nineteenth century Southern conservative political thought.     

Mediating legacies of empire in the post-imperial museum

ABSTRACT

Throughout the Balkans, the history museum remains a crucial site where memories of an imperial past are molded, rationalized, and integrated into the wider arc of nationalist narratives about a country and its people. The legacy of the Ottoman Empire is particularly fraught in Greece, where this period is almost always classified as ‘post-Byzantine’ within the context of government institutions. In this paper, I set out to trace the legacy of the Ottoman Empire as it has been mediated in multiple museum sites throughout the country. I will primarily focus on two case studies: The National Historical Museum in Athens and the Museum of Ali Pasha and the Period of Revolution in Ioannina. Comparing these two sites and their practices of display bring into sharper focus the dynamics of how historical memory plays out in a central versus regional sphere of belonging and identity.     

问鼎上层文化:胡适的哲学史研究

胡适是中国哲学史研究的开山者。他的《中国哲学史大纲》(卷上)作为中国第一部真正的哲学史著作,建立了哲学史学科的新体系,开创了现代学术史的新纪元。(1)它以科学的方法和可信的史料,创造了全新古典哲学史体系、构想与规范,使哲学史作为一门科学戛然独立,并迈向了中国古代哲学史研究的近代化进程;(2)它用疑古与实证的方法实践,完成了新学科的创立及从“形”到“质”的转变,开启了崭新的治学门径,对具体的学术研究起到了示范作用。(3)它从形式到内容整体手段的全方位更新,不仅具有冲击传统惯性的强劲的反封建之风,又有开拓学术研究新风尚之意义。胡适的哲学史研究,新见迭出,影响深远,具有划时代的意义。     

馆藏文物预防性保护风险管理的实践与思考——以上海博物馆为例

馆藏文物预防性保护工作在我国经过了二十余年的系统性研究和应用实践,已经取得了重大进步。近年来,上海博物馆在预防性保护工作中引入风险管理理念,通过明确环境信息、风险评估、风险应对和监督检查的流程,降低文物风险,保障文物安全。本文以上海博物馆的两个临时展览为例,从环境信息统计分析、湿度阈值设定与调控策略选择、材料环境安全性评估、展柜密封性能要求等方面阐述了馆藏文物预防性保护风险管理工作的应用实践和研究思考。     

法国巴黎集美博物馆藏克孜尔石窟壁画调查与原位考证

本文在前人研究基础上,结合笔者数十年的石窟工作经验以及远赴国外广泛调查的结果,将法国巴黎集美博物馆收藏的15块克孜尔石窟壁画残片进行了核对与测量,找到了全部壁画所出洞窟及原位,并通过电脑技术对图片进行了复原。     

金沙土遗址盐害分布与演化特征

金沙土遗址表面存在泛盐、粉化、空鼓等盐害。对这些盐害的分布特征与演化过程的研究是科学保护金沙土遗址的第一步，也是进一步探讨盐害致病机理的前提条件。本工作收集整理了2010～2020年金沙土遗址病害调查资料，通过现场调查和图像处理技术对盐害的类型、分布特征与演化过程进行定性和定量分析；采用X射线衍射、离子色谱和扫描电镜等测定了不同高度土样的成分、盐分含量以及微观结构。结果显示金沙土遗址主要的盐害类型为表面泛盐、粉化、空鼓、片状剥蚀和掏蚀；主要分布区域是西北向走廊和古河道附近，机挖坑侧壁最为严重；在探方侧壁上盐害由上到下依次由表面泛盐过渡到单独粉化，再到空鼓和片状剥蚀，最底层为掏蚀。金沙土遗址盐害的发育过程可以概括为四个阶段，每个阶段主要发育的盐害类型不同，依次为表面泛盐、粉化、片状剥蚀和掏蚀。越到后期，各类盐害分布范围越大，发展速度越快，对土遗址破坏性越大。离子浓度沿高度的分布与毛细上升作用有关，也与病害的劣化程度和发育进程有关。硫酸钙类是导致土遗址泛盐、粉化和脱落的主要盐分之一。