Pore‐scale multiphase flow experiments in bead packs of variable wettability

The aim of this experimental study is to investigate the impact of wetting characteristics on multiphase flow, sweep efficiency, and residual fluid distribution in unconsolidated porous media. A sequence of oil and water injections was performed on bead packs with uniform porosity and permeability, but different wettability characteristics. Uniform and mixed‐wet bead packs with varying degree of wettability were fabricated to analyze how the residual saturation profiles and the distribution of fluid phases at the pore scale respond to changes in wettability. X‐ray microtomography was used to visualize and analyze the fluid distribution in each bead pack at the end of oil and brine injection. It was found that sweep efficiency was high for the uniform, strongly wetting glass bead pack. For the intermediate‐wet plastic bead pack, we observed evidence of viscous fingering resulting in degenerating sweep efficiency after water injection. In media with mixed wetting surfaces, the spatial distribution of wettability influenced the topology of the saturation profiles and resulted in larger quantities of disconnected fluid blobs. Results also showed that the average blob size was independent of the average residual saturation. In addition, the difference in saturation conditions preceding each injection affected sweep efficiency. The residual saturation after the 1st displacement was higher than the residual saturation after the 2nd displacement.     

New‐Build Gentrification and the Everyday Displacement of Polish Immigrant Tenants in Greenpoint,Brooklyn

In response to research that has downplayed or denied the reality of gentrification‐induced displacement, critical urban geographers have called for rethinking the concept of displacement. This article takes up that call by examining the impact of new‐build gentrification on the everyday place‐making abilities of Polish immigrant tenants in Greenpoint, Brooklyn. Based on nearly four years of work as a tenant organizer, this article looks at the forms of “everyday displacement”—the ongoing loss of the agency, freedom, and security to “make place”—experienced by immigrant tenants who struggle to remain in the neighborhood. Drawing upon Lefebvre's spatial triad and Blomley's work on the social relations of property, this article argues that everyday displacement is experienced through the production of new spaces of prohibition, appropriation, and insecurity that constitute a form of neighborhood erasure.     

Foreign direct investment and renewal of industries: framing the reciprocity between materiality and discourse

ABSTRACT

Informed by the evolutionary literature on economic geography, this paper develops a conceptual framework for analysing the complexity between foreign direct investment (FDI) and renewal of industries. Present contributions tend to explain the impact of FDI on regional industry evolution as a static, output-oriented phenomenon, that is, informed by an instrumental rationale in which the dynamism of FDI and regional industry development is linked to polarization of stagnation/decline vs. growth/development. Opposing this, we argue for an epistemological shift in approach to the reciprocity between FDI and renewal of industries as dynamism between material outcomes and discursive processes. To accomplish this, we build on key concepts and understandings from evolutionary economic geography; review the regional effects of FDI literature and build a framework sensitive to contextual dimensions of FDI. We focus on multinational companies’ practices and material outcomes in terms of regional spillovers and the discursive processes in terms of FDI narratives. This framework is exemplified by data from the salmon farming industry and the subsea industry in Hordaland and the oil and gas industry and the mining industry in Finnmark.     

‘It’s the best place on Earth’: Newfoundland women’s outmigration,diaspora and the myth of return*

This article explores Newfoundland women’s experiences of outmigration as a gendered process of displacement. Experiences of displacement can provide significant insight into Newfoundland and Labrador’s fractured political relationship with the nation of Canada. This article argues that Newfoundland outmigration must be viewed through the lenses of diaspora and intersectionality, as nationalist sentiment and the province’s peripheral place within Canada affect women’s experiences of outmigration. Tensions shaped by gender, ethnicity and socio-economic status affect their ability to integrate into Canadian society and influence their decisions about returning home.     

Discrete Element Modeling of Groin Vault Displacement Capacity

Displacements experienced by many historic masonry structures concentrate at masonry joints and can be large before collapse is a concern, making modeling of stability using discrete element modeling (DEM) particularly suitable. In this study, masonry groin vault and arch models with several geometries were subjected to horizontal and vertical support displacements using DEM. Support movements were applied in a quasi-static manner to simulate the support settlement process. Displacements at collapse and at the point when the first block fell from the vault were recorded. Block separation and mechanisms were also noted during the simulations. A two-dimensional (2D) analytical model using thrust line analysis was developed to help evaluate the DEM results. In general, the displacements at first block fall were relatively large but significantly less than those at collapse. The groin vaults and arches exhibited significantly higher capacity to sustain vertical support displacement compared to horizontal displacements. For many geometries, the DEM collapse displacements of the groin vaults compared reasonably well to similar arches, indicating that the displacement capacity of groin vaults can be reasonably estimated using 2D simplifications. However, for certain geometries, three-dimensional effects were found to significantly affect displacement capacity.     

Migration and the location of MNE activities: Evidence from Italian provinces

We investigate the migration-inward foreign direct investment (FDI) nexus in narrow geographies. A novel two-stage empirical strategy allows us to investigate the role of migration as a determinant of multinational enterprises (MNEs) location choices and unpick heterogeneity in foreign investors' preferences towards the presence of migrants in the host location. This allows us to shed light on the relative importance of the underlying mechanisms linking migration and inward FDI. Relying on 1113 greenfield investments by 895 MNEs in Italian NUTS3 regions over 2003–2015, we find that immigrants from the country of origin of the investor exert a positive but highly heterogeneous effect on MNE location choices. Investors are more sensitive to the presence of migrants from their country of origin when they lack experience in the destination country (first-time investors) and when their investments concern market-access or business-services (downstream) activities. This is consistent with the view that migrants act as information brokers that bridge the fixed costs of international business activities.     

我国地理学关于跨国投资的研究进展

本文运用科学计量法与文献研究法,对我国地理学界关于跨国投资的研究进行了综述,发现我国学界在投资时空演变格局、区位选择、驱动因素与效应等方向取得了较为显著的进展,近年来研究的国际化趋势明显。目前中国已经从单纯的外资输入发展为引进与输出结合的双向投资结构,中国的对外投资是近 10年近年的热门话题。 总体而言,相关研究以实证分析为主,经历了从单一理论的借鉴到多理论的整合,视角更多元、内容更多样、方法更综合。空间视角下的计量分析方法和可视化表达是当前跨国投资研究较为热门的方法。未来的研究仍需理论创新,对西方主导的研究视角进行批判性思考,突出地理学科特色。     

海外华资对侨乡的投资探讨--以广东侨乡为例

包括港澳台资本及东南亚等地的华人华侨资本在内的海外华资,一直是中国外资引入的主力军,对中国大陆,尤其是广东侨乡的发展起了巨大的推动作用.本文以广东侨乡为例,论述了海外华资对侨乡的投资进程,并从国际直接投资理论出发,试对这一资本流入进程进行理论阐释.而且,通过对广东侨乡的分析,探讨海外华资投资所带来的经济发展效应.     

Serious chemistry on set: the molecular structure of film investment in China

ABSTRACT

Using the case of the Mainland Chinese film industry, this paper argues that the competing features that attract commercial capital investment and drive state centralization create a molecular structure of national film investment, or the division of investment in the film industry into several interdependent centers. A combination of regulations, institutions, the built environment and access to capital leads to a distributed investment of strategic assets linked by bonds of complementarity. Beijing dominates in the area of state-supported production. Shanghai outperforms other cities in terms of foreign direct investment. Qingdao has attracted domestic Chinese private investment and entrepreneurship. Unlike the capital agglomeration seen in countries like the United States where film investment is driven centrally by financial considerations, the Chinese national film industry is strategically divided into several centers that rely more dominantly on political or financial resources. While this paper focuses on China, understanding the molecular structure of the Chinese film industry helps us understand both developed and developing countries that are characterized by robust state oversight and strong commercial media sectors.     

Displacement,memory and home(less) identities: Turkish Cypriot women’s narratives

Abstract

This study is an analysis of the narratives of Turkish Cypriot women in the north of Cyprus who were displaced during the ethnic conflict between the 1950s and 1974. We have conducted 21 interviews with Turkish Cypriot women who were living in different parts of Northern Cyprus. We used oral history, both as a method and as an epistemological stance to re-phrase the near past of Cyprus and the Cyprus issue from the perspective of gender/women’s studies. The study follows the traces of modernity, patriarchy, and nationalism in women’s narratives, about the place, home, belonging and homelessness. The narratives describe Turkish Cypriot women’s experiences of being a woman in conflict and displacement (‘göçmen olmak’ in daily talk in Turkish) making a home out of a house and undertaking daily routines for their families. The study also reveals that ethnic conflict and displacement have empowered women to a certain degree.