Fluid dynamics and fluid‐structural relationships in the Red Lake mine trend,Red Lake greenstone belt,Ontario, Canada

The Red Lake mine trend, a deformation zone in the Archean Red Lake greenstone belt that hosts the world‐class Campbell‐Red Lake gold deposit, is characterized by abundant foliation‐parallel iron‐carbonate ± quartz veins with banded colloform‐crustiform structures and cockade breccias overprinted by silicification and gold mineralization. There is an apparent incompatibility between the cavity‐fill structures of the veins and breccias (typically developed at shallow crustal depths) and the upper greenschist to lower amphibole facies metamorphic conditions recorded in the host rocks (indicating relatively deep environments). This, together with the development of veins along the foliation plane, represents an enigmatic problem that may be related to the interplay between fluid dynamics and stress field. We approach this problem through systematic study of fluid inclusion planes (FIPs) in the vein minerals, including the orientations of the FIPs and the pressure–temperature conditions inferred from fluid inclusion microthermometry. We find that fluid inclusions in the main stage vein minerals (pregold mineralization ankerite and quartz and syn‐ore quartz) are predominantly carbonic without a visible aqueous phase, whereas many inclusions in the postore stage contain an aqueous phase. Most FIPs are subvertical, and many are subparallel to the foliation. High fluid pressure coupled with the high wetting angles of the water‐poor, carbonic fluids may have been responsible for the abundance of brittle deformation features. The development of subvertical FIPs is interpreted to indicate episodic switching of the maximum principal compressive stress (σ₁) from subhorizontal (perpendicular to the foliation) to subvertical (parallel to the foliation) orientation. The subvertical σ₁ is favorable for the formation of foliation‐parallel veins, as fractures are preferentially opened along the foliation in such a stress regime, the origin of which may be linked to the fluid source.     

A PROVENANCE STUDY OF FRENCH LIMESTONE BASED ON VARIABLE SELECTION FROM COMPOSITIONAL PROFILES

The present study shows how multivariate analysis and variable selection techniques can be used in archaeological provenances studies to improve classification performances. Neutron activation analysis (NAA), in combination with stepwise linear discrimination analysis (SLDA) (capable of simultaneously performing variable selection and classification), was applied to differentiate among limestone samples from different quarries across the north of France based on their compositional fingerprint. A hierarchical classification approach was followed, aimed at progressively assigning limestone samples to more specific sources of origin, from the broadest classification units (French regions) to the narrowest ones (individual quarries). The application of the stepwise variable selection procedure to extract the most discriminating compositional variables prior to each classification development allowed us to obtain a perfect separation between the limestone categories considered at every classification stage (all samples were correctly classified and predicted in all cases). The high‐quality results obtained were even more remarkable considering the relatively small number of significant variables selected in each case using the SLDA method. An illustrative example was provided in order to demonstrate that the classification strategy proposed can actually allocate an unknown sculpture to a particular quarry of origin.     

SHELL FRAGMENTATION AS A TOOL FOR QUANTIFICATION AND IDENTIFICATION OF TAPHONOMIC PROCESSES IN ARCHAEOMALACOLOGICAL ANALYSIS: THE CASE OF THE CANTABRIAN REGION (NORTHERN SPAIN)

This paper presents a quantification method for archaeological molluscs using fragmentation categories. By employing the data from nine prehistoric sites (13 000 to 5000 bp ; 15 700 to 5700 cal bp ) in Cantabrian Spain (northern Spain), it has been shown that traditional methods, based on one or two anatomical elements, systematically produce a loss in the minimum number of individuals (MNI) that is sometimes significant. This paper also proposes using fragmentation categories in the calculation of the fragmentation index. In addition, based on these indices, a reflection is made on the difficulty involved in associating the amount of fragmentation of the shells with the taphonomic processes that have occurred at the archaeological sites, especially in discerning which agents have caused the fragmentation.     

“整理国故”与郭绍虞《中国文学批评史》

郭绍虞的《中国文学批评史》在思想观念和研究方法上都是"整理国故"思潮的具体实践。郭绍虞"在古人的理论中间,保存古人的面目"的研究范式遵循了"整理国故"的"科学"方法和"求真"精神;他对中国诗学范畴的辨析、对文学批评史学科的史料学建设和诗话研究,与"整理国故"运用新观念、新思想积极改造传统文化的态度也是相一致的。但郭绍虞又超越了一般意义上的"整理国故",注意恢复和发现古人的言外之意,因而显现为一种创造性还原。     

中国妇女发展脆弱性：测度、时空演化及驱动机制

借鉴人类发展指数（HDI）,从健康、教育及就业三大维度构建中国妇女发展脆弱性评估模型。以妇女发展脆弱性指数为测度指标,运用变异系数、LISA时间路径和时空跃迁等方法,对2006—2016年中国妇女发展状况的区域差异、空间分布和时空交互特征进行分析,并利用计量经济学模型探讨其影响机制。结果表明：①2006—2016年,中国妇女发展脆弱性总体上呈下降趋势,区域差异在波动中逐渐扩大。在区域尺度上,东部地区较低,中部和东北地区次之,西部地区最高。东部地区内部差异显著,呈现两极化;②脆弱性类型以低和较低脆弱类型为主,大致以“胡焕庸线”为界,西北半壁妇女发展脆弱性显著偏高;③中国妇女发展脆弱性空间分布具有较强的稳定性,存在一定的路径依赖和空间锁定特征。相对长度由东部沿海向西北内陆及西南地区递增,弯曲度表现出相似的空间分异特征;④妇女发展脆弱性是多因素交互作用的结果。经济发展水平、城镇化、全球化和教育事业发展对于降低妇女发展脆弱性具有积极作用。政府行为的驱动效应对脆弱性存在抑制作用,但未通过显著性检验。     

基于关系视角的企业直接投资区位选择——过程与机理

企业直接投资区位选择是经济地理学的经典议题。目前直接将区位条件与关系网络衔接起来分析企业直接投资区位选择过程的研究较为少见。本文基于关系视角和中国情境,构建了关系连通、区位耦合、博弈谈判三位一体的模型,提出了一种对企业直接投资区位选择过程化的理解方法。文章以案例研究方法,对企业家赴甘肃省和浙江省开发区投资考察过程进行了参与式观察与访谈。研究发现,企业直接投资区位选择遵循关系连通—区位耦合—博弈谈判的过程。第一,企业与投资地关系连通是企业到当地投资的前提,而结构洞有利于企业与投资地关系形成。第二,企业与投资地区位耦合是企业投资区位选择的必经过程。第三,企业与投资地政府博弈谈判是企业投资的重要过程,且必须达成两厢情愿企业才可能在当地投资。在中国情境中,本文的理论模型具有现实代表性。本文的创新之处是结合中国情境,运用关系视角,对企业投资区位选择过程进行了理论重构。     

Archaeological Observation on the Layout of the Three Courts and Five Gates of the Daming Palace of the Tang Dynasty

The system of Three Courts and Five Gates is an essential content of the designs of the capitals and palaces of ancient China. The Three Courts and Five Gates planning of the Daming Palace is the adoption of this rule and the application to the spatial designing of the palace city. The archaeological fieldwork revealed that within the Daming Palace, the Three Courts pattern with three walls as the borders, and Hanyuan Hall, Xuanzheng Hall, and Zichen Hall as the centers formed the outer court, middle court, and inner court plan, which was the embodiment of the new interpretation of the Tang Dynasty to the traditional Three Courts and Five Gates ritual system. Through the trimming of the archaeological data fetched in the past 60 years about the southern part, which is the official affair zone, of the Daming Palace, this paper discusses the spatial structure of the Three Courts and Five Gates pattern of the Daming Palace, and analyzes the substantial relationship between this pattern and the political demands of the ruling class.     

Compression and digestion as agents of vertebral deformation in Sciaenidae,Merlucidae and Gadidae remains: an experimental study to interpret archaeological assemblages

Journal of Archaeological Method and Theory - Fish taphonomy from archaeological sites provides considerable useful information about human behaviours and environmental contexts as potential food...     

‘The Old Woman as Hare’: Structure and Meaning in an Irish Legend

This paper looks at the St Kitts and Nevis Mummies' plays as published in Folklore by Roger Abrahams (1968). It demonstrates that the texts were originally taken from a play published by the Victorian children's author Mrs J.H. Ewing. This play appeared in several editions, most notably in two series issued by the Society for Promoting Christian Knowledge. Mrs Ewing's text was itself compiled from three northern English chapbook texts and a version from Silverton, Devon. The relative contribution of these texts to Mrs Ewing's play, and the way she put them together, are both explored.     

Pakistan's foreign and security policies after the 2013 general election: the judge,the politician and the military

This article examines the consequences of Nawaz Sharif ‘s electoral victory in Pakistan's 2013 general election on the country's foreign and security policies. It analyses the relationships the new government is likely to entertain with the military institutions and the judiciary, and tries to identify the potential vulnerabilities of the new authorities. It concludes that the security situation will improve marginally, at best, and that a relatively smooth working relationship with the US, dictated by the constraints of the US withdrawal from Afghanistan, can be anticipated. Relations with India are likely to constitute the real test of the political freedom enjoyed by Prime Minister Nawaz Sharif vis‐a‐vis the military. The difficulty will be to calibrate the relationship to avoid provoking a backlash with the military.