中华文明的绚丽曙光--论舞阳贾湖发现的卦象文字

文章通过对舞阳贾湖遗址发现的21个刻划符号的研究,认为其构形与商周甲骨金文相似。目前已认识的11个字,分别属于反映《离》、《坤》两卦之象的卦象文字,这说明中国使用至今的汉字,早在八千多年前就产生。     

东南方言地名“干”通名释义

中国东南地区"干"通名地名分布比较密集,这些地名分为实体名+干、姓氏/人名+干、方位+干、性状+干、地名+干共五类。古代文献地名中的"干"含有"边、厓"义,可泛指边际、边缘,也可以确指水边、山麓。历史上,苏南等地的北部吴语"干"曾经也是成词语素活跃在口语中。虽然宜兴等苏南地区表示"边缘、旁边"义的"干"已经退出方言口语交际场合,只固定在地名之中,但却为研究地名通名演变,研究词语更替提供了窗口和实例。     

Nonparametric Significance Test for Discovery of Network‐Constrained Spatial Co‐Location Patterns

Spatial co‐location patterns are useful for understanding positive spatial interactions among different geographical phenomena. Existing methods for detecting spatial co‐location patterns are mostly developed based on planar space assumption; however, geographical phenomena related to human activities are strongly constrained by road networks. Although these methods can be simply modified to consider the constraints of networks by using the network distance or network partitioning scheme, user‐specified parameters or priori assumptions for determining prevalent co‐location patterns are still subjective. As a result, some co‐location patterns may be wrongly reported or omitted. Therefore, a nonparametric significance test without priori assumptions about the distributions of the spatial features is proposed in this article. Both point‐dependent and location‐dependent network‐constrained summary statistics are first utilized to model the distribution characteristics of the spatial features. Then, by using these summary statistics, a network‐constrained pattern reconstruction method is developed to construct the null model of the test, and the prevalence degree of co‐location patterns is modeled as the significance level. The significance test is evaluated using the facility points‐of‐interest data sets. Experiments and comparisons show that the significance test can effectively detect network‐constrained spatial co‐location patterns with less priori knowledge and outperforms two state‐of‐the‐art methods in excluding spurious patterns.     

Modification of Ductility Reduction Factor for Strength Eccentric Structures Subjected to Pulse-Like Ground Motions

This article investigates the ductility reduction factors for RC eccentric frame structures subjected to pulse-like ground motions. The structural models are with the strength eccentricities which are much disadvantageous than the stiffness eccentricities during the inelastic response range. A method to determine the ductility reduction factors of the strength eccentric structures is suggested by modifying those of reference symmetric structures through an eccentricity modification factor. The four factors of strength eccentricity ratio, ductility ratio, story number and velocity pulse of ground motions, are investigated to gain insight into this modification factor. It shows that the ductility reduction factors of the eccentric structures are clearly smaller than those of the symmetric structures. The eccentricity modification factor is mainly affected by the strength eccentricity and the ductility ratio, decreasing with the increment of the eccentricity or the decrement of the ductility ratio in a medium eccentricity range. The earthquake pulse-like effect and the eccentricity have coupling influence on the modification factor, while the effect of story number is not apparent. Based on the results of a comprehensive statistical study a simplified expression is suggested, which can estimate the eccentricity modification factors for both pulse-like and nonpulse-like ground motion cases.     

Two 17th-century English factories in North Kanara,Karnataka, India: a historical archaeology perspective

Summary: This article presents historical archaeology evidence for two 17th-century English factory sites located in North Kanara, Karnataka, India. The factories were established in the 1630s by a rival to the East India Company known as the Courteen Association to trade for spices and textiles. Documentary and archaeological evidence for the factories’ foundation, setting and structural form is presented and the broader significance of these principal characteristics considered with reference to the study of later East India Company factory sites in south-west India. The article concludes by assessing the potential for further archaeological investigation of the sites.     

Clarifying prehistoric parasitism from a complementary morphological and molecular approach

This paper reports an approach to the identification of prehistoric parasitic infection, which integrates traditional morphological methods with molecular methods. The approach includes the strengths of each method while mitigating the limitations. Demonstrating the efficacy of this approach, we provide a case study from a 1400 year old desiccated fecal sample from La Cueva de los Muertos Chiquitos, archaeological site, near Rio Zape, Durango, Mexico. Traditionally prepared microscope slides were processed via microscopy and tentative ascarids were identified. Information regarding the parasites' developmental stage was recorded. DNA was then extracted directly from the slide material. From this DNA extract, a small segment of the 18S ribosomal RNA gene variant that is specific to Ascaris, and its phylogenetically close relatives, was targeted for PCR amplification and sequencing. Phylogenetic analysis of the DNA sequence best matched a member of physalopterids, rather than ascarids, with a single exception of a match to Contracaecum spiculigerum. Subsequent extractions, amplifications and sequencing of the original rehydrated coprolite material confirmed these results. The C. spiculigerum sequence represented a phylogenetic anomaly and subsequent analysis determined the sequence was an error in the BLAST database, likely attributable to misidentification of juvenile specimens prior to sequencing and submission. Physaloptera are a difficult genus to identify morphologically and can carry major health burdens. They may be underreported in humans, in part, because of morphological similarities to the more common human parasites belonging to ascarids. We conclude that integrating traditional morphological methods with molecular methods can help resolve this issue, in both contemporary and prehistoric populations.     

Demonstration Survey of Prehistoric Reef‐Net Sites with Sidescan Sonar,near Becher Bay,British Columbia,Canada

Sidescan sonar was deployed in challenging shallow‐water conditions to demonstrate the potential for recording anchor‐stones left on the sea‐bed from prehistoric fishing operations. In less than three hours the survey successfully mapped a reef‐net site originally recorded in 1985 by diving archaeologists over many hours. In addition, 8 km of coastline were surveyed, resulting in the discovery and recording of one new underwater reef‐net site. Our understanding of evolving subsistence practices of the Straits Salish, for whom reef‐net fishing was a critical activity, may be enhanced by this survey method which provides cost‐effective access to data not otherwise being recorded. © 2011 The Authors     

互助:彩虹之约

很久很久以前,一块古老的土地上风妖逞凶,沙怪肆虐,聪明勇敢的土族青年李木端智,怀揣镇邪治沙、开辟良田的理想,远走北方去寻找神仙,讨教本领。千山万水的行程中李木端智遇到了美丽的天鹅仙女,结为夫妻的他们回到家乡后,共同制伏了风妖沙怪,开田耕耘。心灵手巧的天鹅仙女,在一块毯子上绣了一幅七彩图画: