基于海量点云数据的大雁塔三维重建

古建筑三维重建已成为历史遗迹保护与修复的重要内容。为了探讨三维激光扫描数据的获取流程、数据处理方法,以三维激光扫描获取的大雁塔海量点云数据为例,研究了古建筑三维重建中点云数据获取与处理的详细过程。联合Cyclone、AutoCAD和3D-Max软件的优点构建了大雁塔真实的横面、剖面、立面模型,其中重点研究了海量点云数据在Cyclone软件中分块建模的方法。结果表明:将拼接好的大雁塔海量点云数据分块建模,不仅加快了数据处理的速度,而且符合精度要求。在点云数据拼接时采用标靶拼接和同名点拼接相结合及测站间两两拼接之后再整体拟合平差的方法,减少了拼接中的误差,使每站拼接误差都不超过3cm。在建模过程中的墙体拟合是上万个点云经过平差计算得到,精度高达2mm。最后在3D-Max软件中组合、渲染和贴图,真实地构建了大雁塔三维立体模型。为古建筑数字化存档和后期的修缮工作提供了重要的依据。     

Iron Age Landscapes of the Benue River Valley,Cameroon

The Iron Age settlements of northern Cameroon were dispersed across the landscape, taking advantage of different eco-climatic zones to exploit a variety of natural resources. Situated at the interface of the upper and lower terraces of the Benue River, mound sites in the area around Garoua have occupation histories spanning multiple centuries. The site of Langui-Tchéboua displays evidence for rapid accumulation of sediments approximately 700 years ago, which may have been a deliberate construction strategy that would have allowed the site’s inhabitants to exploit resources in both floodplain and dryland contexts. The combined use of multiple dating methods and micromorphology provide novel insights into both the mechanisms of anthropogenic landscape change and possible motivations governing those choices.     

A History of Depressed Skull Fractures from Ancient Times to 1800

The story of managing depressed fractures illustrates how knowledge of proven value does not always get handed down. Celsus was the first to describe sensible management for depressed fractures. As he wrote in Latin this was forgotten. Galen’s Greek writings survived forming the basis of management until the sixteenth century. In 1517, Hans von Gersdorff published a formidable illustrated surgical text. One illustration depicts an instrument for elevating depressed bone fragments. It looked dramatic but could not work and its defects were finally defined in the eighteenth century. Ambroise Paré used a bone punch just as we do today, but no later surgeon mentions this, though the instrument was well known. Elements of chance, fashion, emotionally powerful illustrations, and perhaps stubbornness had a profound effect on management delaying rational treatment for centuries.     

大运河宁波段聚落文化遗产保护措施研究

聚落文化遗产是大运河遗产的重要组成部分,与运河兴衰息息相关。宁波段运河聚落文化遗产历史久远,保存类型丰富,历史价值突出。宁波运河的开凿和变迁对运河聚落整体格局的形成、演变和发展关系紧密;同时运河聚落的产生和发展也促进了运河功能的不断完善和运河经济的发展。如何保护好运河聚落文化遗产已经成为重要的研究课题。本文意在梳理宁波段运河聚落文化遗产的构成情况,并对宁波段运河聚落文化遗产的科学保护提出了可行性建议。     

The potential of chironomid (Insecta: Diptera) larvae in archaeological investigations of floodplain and lake settlements

The head capsules of chironomids (Insecta: Diptera) are well preserved in sediments and can be recognised to a high taxonomic level, usually genus and sometimes species. Work on lake sediments has shown that they can be accurate indicators of water temperature, oxygen regimes, and nutrient status (particularly total phosphorus and chlorophyll-a), as well as heavy metal pollution. No systematic chironomid analyses, however, have previously been undertaken on archaeological deposits. In order to address this we assessed the use of chironomids in three types of archaeological deposit; firstly, a lake core at the edge of a lake settlement (crannog), secondly, a palaeochannel infill adjacent to a multi-period settlement site and lastly, a Roman well deposit from a floodplain environment. The chironomid assemblages are shown to vary significantly both between and within the sites and reflect the immediate environment and the adjacent area. The lake sediment assemblage reflects the construction of the crannog through elevated levels of organic detritus, wood and woody debris. The palaeochannel assemblage reveals changing natural conditions and nutrient enrichment probably associated with settlement during the Saxon period. The well assemblage is taxonomically restricted and indicative of organic debris, dead plant material, animal dung and possibly human effluent deposited after abandonment of the well. Dry storage of the palaeochannel and well sediments for several years did not appear to affect the concentration or state of preservation of the head capsules. The chironomid reconstructions are shown to provide an additional indicator of human activity which has the potential to provide quantitative data on the character of aquatic environments associated with archaeological sites.     

Law and the historical geography of the Galilee: Israel's litigatory advantages during the special operation of land settlement

This article contributes to a re-evaluation of the role of law in historical geography. It focuses on Israeli officials' application of the complex legal process of ‘settlement of title’ to land in the all-Arab central Galilee during the 1950s and 1960s, which was aimed at transforming Jewish–Arab socio-spatial power relations in the region. Expanding Israeli conceptions of state land and the government's focus on contesting land claims of Arab citizens transformed the process into an overwhelmingly litigatory one, triggering thousands of legal disputes between state agencies and Galilee Arabs. Drawing on Galanter's work on repeat player advantage and Kritzer's work on government litigants, this article characterizes the state as a ‘government compound repeat player’, enjoying advantages that not only won cases in the Haifa District Court but that also had direct impact on the subsequent geographical transformation of the region. On a more general level, this article argues that law has played a greater role in shaping historical geographies than the literature might suggest and encourages additional work on the subject.     

大辛庄遗址发掘与历史时期考古学文化的思考

2003年大辛庄遗址采用新的考古发掘技术与方法,全面收集材料,开展综合研究,具有重要的方法论意义。对于历史时期考古学文化研究而言,历史工作者当顺应考古学发展趋势,采纳新技术与方法,用整体观分析问题,实现多学科合作,开展综合研究,有利于我们多层面地复原古代社会。     

日照两城地区聚落考古:人口问题

作者强调了聚落形态考古在古代人口估测中的重要性。然后根据山东日照两城镇地区系统性调查资料 ,论述了从史前到汉代不同时期的人口密度和数量。     

元代青花瓷器识鉴

本文在前人研究的基础上,结合作者多年来的研究心得,对有关元代青花瓷器的几个问题进行了论述和探讨。元代青花瓷器的造型、纹饰、胎釉彩及制作工艺等均具有明显的时代特征,这些特征是鉴定元代青花瓷器的关键。另外.了解并熟悉元代青花瓷器的仿造情况可以在鉴定工作中更加得心应手。     

The Archaeology of Regions: From Discrete Analytical Toolkit to Ubiquitous Spatial Perspective

In the 1970s and 1980s, regional analysis was an influential part of archaeological research, providing a discrete set of geographical tools inspired by a processual epistemological and interpretive perspective. With the advent of new technologies, new methods, and new paradigms, archaeological research on regional space has undergone significant changes. This article reviews the state of regional archaeology, beginning with a consideration of its history and a discussion of the fundamental issues facing regional investigations before focusing on developments over the last several years. On one hand, the diversification of archaeological theory has created new paradigms for thinking about human relationships with one another and with the physical environment across regional space; in this regard, historical ecology, landscape archaeology, and evolutionary theory have been particularly influential in recent years. This has led to a corresponding diversification of the traditional methods of regional analysis. Most notably, the advent of powerful digital technologies has introduced new tools, especially those from the geographic information sciences, that build on the quantitative methods of past approaches. The investigation of regional data is no longer based on a discrete toolkit of simple mathematical and graphical procedures for representing spatial relationships. Instead, regional archaeology has matured into a diversity of multiscalar spatial and geostatistical techniques that inform many areas of archaeological inquiry.