Geological controls on regional transmissivity anisotropy

A variety of data indicate that the Carbonate aquifer in southern Manitoba is a heterogeneous and anisotropic aquifer wherein groundwater flow follows preferred flow path networks. Specific capacity tests show that aquifer transmissivity can vary by up to four orders of magnitude within 1 km. Geostatistical analysis reveals a strong anisotropy in the transmissivity field, with better spatial continuity in NE–SW and NW–SE directions, coincident with the dominant orientations of fractures observed in bedrock exposures. However, discrepancies between the orientation of highest fracture density and best transmissivity continuity suggest that either additional geological factors control the preferred flow network or there is a biased representation of the fracture pattern because all direct fracture observations came from the northern part of the study area. In an effort to investigate whether the geographically biased fracture data set represents the fracture pattern for the whole region, Landsat images and digital elevation maps were processed to extract linear features that may indicate subsurface fracture zones in areas where bedrock is covered by glacial sediments. The results suggest a consistent fracture pattern throughout the study area, indicating that the two observed fracture groups might have gone through different processes in terms of permeability development. Alteration by mineral cementation and dissolution along fracture surfaces may have preferentially improved the fracture permeability in one orientation, while reducing it in the other. The in situ stress field is also believed to play a major role in the preferred regional flow network. This paper discusses the evidence for the preferred flow path network and possible geological factors controlling aquifer anisotropy in this region.     

Building local nodes in a global sector: Clustering within the aeronautics industry in Montreal

This article analyzes the mechanisms through which metropolitan governance is established in Montreal's aeronautics sector, one of the most important and innovative industries in the region. The article also examines the role of lead firms, socio‐economic actors, and public agencies from a territorial point of view. It is established that on the one hand the existence of a small number of prime producers at the local level facilitates productive linkages among businesses through subcontracting, and on the other hand, the intensive participation of intermediate socio‐economic agencies and organizations ensures a metropolitan anchoring of the sector and creates a strong territorial identity among the players.     

论中世纪英格兰庄园的运输役

中世纪英格兰运输役起源于庄园领主的物资供应需求,随着12、13世纪市场的激增以及运输条件的改善,市场型运输役逐渐普及。运输役一般由农民上层承担,其运输距离、目的地、运输种类等都受习俗制约。运输役衰落的原因主要有直营领地的衰落、运输的专职化以及私下交易的流行。运输役的兴衰与中世纪英格兰市场培育密切相关,是市场已有一定发育但还不太成熟的产物。     

Universities in inclusive regional innovation systems: Academic engagement and uneven knowledge use in Brazil

The purpose of this paper is to spatially and regionally examine academic engagement within Brazil, identifying patterns. Moreover, our investigation can contribute to a better understanding of how knowledge can be turned into a tool to fight regional inequality. We depart from two hypotheses: first, universities situated in peripheral regions interact more with companies from relatively more dynamic regions, and second, in the absence of industrial knowledge demand, universities tend to collaborate more closely with a diverse range of stakeholders in the region. To evaluate these hypotheses and find empirical evidence, we consider 4497 research groups and 4603 nonacademic organizations as “nodes” connected by 8830 collaborations throughout all Brazilian regions. Social network tools are used to illustrate the spatial and regional dimensions of academic engagement more accurately. The results show that academic engagement is not regionally homogeneous, demonstrating essential differences regarding local nonacademic partnerships. Innovation policies, which encourage only university–firm interactions, perpetuate regional inequality.     

Hidden in plain sight: mixed methods and the marble orchards of the Vlach Rom (Gypsies) in Toledo,Ohio

While American Romanies live a remarkably secretive cultural existence, their grave locations and memorial stones offer accessible evidence about their history and active, on-going communities. This article elaborates a less-intrusive ethnographic method that uses Romani cemetery data to explore and map the distributions and social networks of American Romani communities. This case study identifies Vlach Rom memorial sites located in Toledo, Ohio's Calvary Catholic Cemetery. Data were gathered on the memorials and spatially cataloged using a global positioning system (GPS). Additionally, genealogical data on the families were collected whenever available in order to construct and map family networks. Conjectures explaining the spatial distribution were tested by empirically investigating geographic information system (GIS) maps of different gravesite attributes. Land availability was the most likely factor determining the distribution. Evidence of Toledo Rom history and cultural practices were also gathered and reviewed from a qualitative analysis of the memorial stones. These discoveries have the potential to advance Romany studies—by applying modern analytic tools, GPS and GIS hardware and software to reveal otherwise “hidden” knowledge.     

Mobile Peoples: Pastoralists and Herders at the Beginning of the 21st Century

Bruce Trigger's and Adam Smith's comparative studies of state-level societies provide new theoretical approaches and are important components in a resurgence of explicit comparative analysis of early states by archaeologists. Trigger presents a massive systematic comparison of seven ancient states on an unusually large number of themes, whereas Smith carries out more intensive comparisons of a smaller sample on more limited themes. These well-written works make significant contributions to a number of areas, including empirical analysis, theory, and comparative methods.     

Determining the Success of Economic Sanctions

This article applies the social-network conception of national power, derived from the social-network conception of the international system structure, to economic sanctions, one of the most widely studied empirical phenomena in international relations. The empirical analyses of economic sanctions presented here find that sanctions cases with disproportional structural-network power between sender and target were far less likely to be successful and those with the target state possessing high structural-network power were far more likely to be successful. The evidence from nonparametric model discrimination statistics and information criteria measures shows that the sanctions models with new social-network power measures have greater explanatory power than or statistically outperform those with old attributional power measures, such as the Correlates of War index and GNP.

一些政治学者认为强调农业和农民的“乡村情结”越来越失去其政治和社会意义,但并没有多少实证研究支持这一说法。为此,作者就人们对农业和农民的态度做了探讨性调查。调查结果显示,人们的态度符合“乡村情结式微”论,但会因年龄、位置、出生国、投票意向而有差异。不过,仍存在一种将乡村情结归诸农民的倾向,有对农民生产方式的强烈支持、以及对农业于国家未来重要性的坚信。令人惊奇的是,与过去三十年的市场自由主义相左,对政府之扶助农业的支持可谓强烈。     

从信息网络到城市群区内数码城市的建立

人类进入21世纪后,全球经济一体化的新形势下,工业化、城市化推动了全社会信息产业的迅速发展,尤其是大城市之间的信息高速公路、因特网等计算机技术和遥感技术发展更快。本文着重探讨了三个问题:①城市空间的信息网络世界;②信息行业对城市发展的潜在作用(协作效应、替代效应、衍生效应等)以及对城市空间扩展的影响;③城市群区内数码城市的建立,促进了城市现代化。     

基于社会网络分析方法的产业集群研究——以河南省虞城县南庄村钢卷尺产业集群为例

近年来,社会网络分析方法(SNA)被引入到产业集群研究中,它从更微观层次刻画了产业集群的网络结构和网络特性,在一定程度上弥补了当前产业集群研究的缺陷。但是SNA并不是深层次的结构模型,相应的分析还要从现象洞察到其背后社会关系的深层含义。本文首先对SNA作一简单介绍,然后以河南省虞城县南庄村钢卷尺产业集群为例,来检验这种分析方法在集群网络研究中的具体应用,并通过探究现象背后的社会关系来修正和完善这种分析方法,得出了重要结论,同时为丰富我国产业集群的研究方法提供有益参考。