农村市场参与者的特征和行为感应分析

将行为方法引入到农村市场的研究中来是十分必要的。作者以行为理论为基础,通过详细的调查研究,揭示了区域性农村市场上消费者和商人的行为特征及其感应和偏好。     

Comparison of 3D Landmark and 3D Dense Cloud Approaches to Hominin Mandible Morphometrics Using Structure‐From‐Motion

The objective of this study is to compare landmark‐based assessment of hominin mandible morphological variation with that from a high‐density point cloud, using 3D models constructed from structure‐from‐motion (SfM) surface capture techniques. Surface models of nine hominin mandible casts were created using SfM photogrammetry. The morphology of these models was described using traditional geometric morphometrics based on identification of landmarks. This was compared to the morphological variation described by the differences between high‐density point clouds, which do not rely on anatomical landmarks, using an iterative closest point algorithm. The landmark‐based approach grouped the anatomically modern human and Neanderthal mandibles with reasonable success. The high‐density point cloud approach also grouped these successfully, but was able to incorporate information from a specimen that was insufficiently preserved to be included in the landmark data set. This improved the accuracy of the grouping. The use of high‐density point clouds from surface capture to analyse hominin mandible morphology allows for greater amounts of information to be included and offers a potential method to identify shape affinity that is as successful as landmark‐based geometric morphometrics.     

A provenance study of Mycenaean pottery from Northern Israel

The occurrence of imported Mycenaean pottery in the Late Bronze Age southern Levant is one of the most conspicuous aspects of Eastern Mediterranean trade connections during this period. A group of 183 Mycenaean pottery vessels from 14 sites in northern Israel, from both coastal and inland settlement contexts were analyzed by Neutron Activation Analysis. The results indicate that the vast majority of these vessels have a similar profile and can be provenanced to the north-eastern Peloponnese or more specifically, to the Mycenae/Berbati workshop in the Argolid. Possible interpretations of these results are presented and discussed against the historical and cultural background of the Late Bronze Age Eastern Mediterranean.     

郑韩故城出土战国晚期铁器腐蚀产物分析

为了分析郑韩故城遗址出土战国晚期铁器的锈蚀产物类型,采用X射线衍射和金相显微观察等现代科技手段,对郑韩故城遗址内仓城铸铁遗址出土的13件样品进行综合研究。通过分析比较样品间的锈蚀程度,发现铁质文物的锈蚀机理复杂,成分多样;一些锈蚀产物中出现明显的分层,锈蚀不均;部分铁器中还存在着活性锈蚀物,其保存状态与金相组织有着密切关系。     

Modeling and Seismic Response Analysis of RC Precast Italian Code-Conforming Buildings

ABSTRACT

In this study, industrial single-story RC precast buildings are investigated. Twenty-four case studies have been considered, in which the column height, the beam spans and the seismic hazard level are varied. The seismic design of the selected case studies is performed according to the Italian building code and additional technical documentation. Three-dimensional nonlinear models are defined to perform static and dynamic analyses for the seismic assessment of the selected case studies. Demand/capacity ratios in terms of the selected engineering demand parameters are computed for ten increasing values of the seismic input return period.     

浅谈以人为本理念在电视新闻评论中的体现

电视媒体是党和政府的重要喉舌,也是党和政府与人民群众的连心桥。电视新闻及其新闻评论,必须贯彻和落实科学发展观,以人为本,把体现党的主张与反映人民心声统一起来,把坚持正确导向与通达社情民意统一起来,把正面宣传为主与加强和改进舆论监督统一起来。     

做一名科研型的小学教师

随着基础教育改革的不断深入,要求教师以研究者的姿态出现在学校的舞台上。教师参与教育科研可以提高教师的素质,使教师在实践中锻炼,在改革中成长。     

焦作马村汉墓和白庄汉墓出土彩绘陶仓楼的科技分析

河南省焦作马村汉墓和白庄汉墓出土彩绘陶仓楼数量众多,类型丰富。为了科学保护修复彩绘陶仓楼,通过X射线衍射仪,X射线荧光分析仪,岩相分析,热膨胀测试等技术手段对这批彩绘陶仓楼进行了深入分析。研究发现,这批陶器为当地取土烧制的加砂陶,陶片结构较密实,器物制作以模为主,部分是模制后粘贴而成,吸水率和表气孔率较高,烧成温度和岩相分析发现陶片有釉化现象。研究成果可为后续保护修复处理彩绘彩绘陶仓楼提供参考和借鉴。     

甘泉金代画像砖墓现场保护与整体搬迁

为了配合基本建设,对甘泉金代画像砖墓进行了整体搬迁工作。采用红外、紫外照相,便携XRF、非接触式色度仪等检测方法在传统画面信息提取的基础上,进一步揭示了画面的信息,发现画像砖和彩绘的颜色以红、白、黑为主色,黄色颜料有荧光反应,初步可确定有赤铁矿、铅丹颜料的使用;病害主要为起甲、空鼓、裂隙、酥粉等。考古现场第一时间控制了墓室小环境和病害,采用泡沫板、复合板、木龙骨对墓室内部进行了整体支撑加固,用石膏麻布、不同型号的钢材对墓室外部进行固型和加固,并在底部插入槽钢和H钢将墓室焊接为一个整体进行吊装和运输。本工作克服了该画像砖墓墓室多、体量大、吊装和搬迁不易的难题,是目前整体搬迁体量最大的墓葬,为同类工作的开展提供了示范。     

山东大汶口文化酒器初探

中国有悠久的酿酒传统,近年来利用科技手段进行陶器残留物分析,使我们能够获得史前时期酿酒技术的直接考古学证据。本文对山东王因和西夏侯遗址出土的4件大汶口文化时期的陶器进行微植物和微生物分析,初步揭示了海岱地区在距今6200～4600年的酿酒传统。即,利用麹、根霉和/或毛霉制麹,以粟黍、小麦族、葛根、栝楼根和百合为主要原料而酿造麹酒。制作精致的磨光黑陶高柄杯是饮酒器,红陶杯和灰陶瓶也与酒有关。海岱地区和中原地区在新石器时期使用不同的酒器,但利用多种植物酿造麹酒是共有的酿酒方法。