Prijavno okno

GU do konca julija

Govorilne ure - Wed, 07/05/2017 - 22:29
Kategorije: Novo na oglasni deski

An Introduction to the Network Weight Matrix

Geographical analysis - Wed, 07/05/2017 - 12:42

This study introduces the network weight matrix as a replacement for the spatial weight matrix to measure the spatial dependence between links of a network. This matrix stems from the concepts of betweenness centrality and vulnerability in network science. The elements of the matrix are a function not simply of proximity, but of network topology, network structure, and demand configuration. The network weight matrix has distinctive characteristics, which are capable of reflecting spatial dependence between traffic links: (1) elements are allowed to have negative and positive values capturing the competitive and complementary nature of links, (2) diagonal elements are not fixed to zero, which takes the self-dependence of a link upon itself into consideration, and (3) elements not only reflect the spatial dependence based on the network structure, but they acknowledge the demand configuration as well. We verify the network weight matrix by modeling traffic flows in a 3 × 3 grid test network with 9 nodes and 24 directed links connecting 72 origin-destination (OD) pairs. Models encompassing the network weight matrix outperform both models without spatial components and models with the spatial weight matrix. The network weight matrix represents a more accurate and defensible spatial dependency between traffic links, and offers the potential to augment traffic flow prediction.

Human Rights Beyond Humanitarianism: The Radical Challenge to the Right to Asylum in the Mediterranean Zone

Antipode A Radical Journal of Geography - Wed, 07/05/2017 - 12:15
Abstract

This article argues for a new centrality of the right to asylum within the Mediterranean zone and the necessity to defend and implement this right beyond the “humanitarian regime”. The first section describes the ways in which humanitarianism's logic has weakened the right to asylum through the implementation of specific EU migration policies since 2013. The second section focuses on the distinction between such a humanitarian regime and the human rights system, assessing the possibility of and necessity for a renewed defense of human rights, starting with the right to asylum. The third section focuses on the Charter of Lampedusa, a radical, alternative normative instrument developed through a grassroots process which involved activists and migrant rights groups and which represents a concrete illustration of how the horizon of human rights might be redefined.

Dispossession and the Depletion of Social Reproduction

Antipode A Radical Journal of Geography - Wed, 07/05/2017 - 12:15
Abstract

Gender is largely under-theorized in the now well-developed literature on dispossession; this paper contributes to the analysis of the gender dimensions of dispossession by bringing the literature on dispossession into conversation with the feminist literature on social reproduction, specifically, depletion of social reproduction. Drawing on qualitative field research, the paper provides a gendered analysis of the multiple vectors of dispossession affecting the Miyana, a Muslim community living in the Little Rann of Kutch, an estuarine zone in central Gujarat within which prawn harvesting and salt production are their symbiotic seasonal livelihood activities. Using the concept of depletion as a diagnostic tool, I argue that the assessment of depletion due to dispossession requires investigation of the levels of mitigation, replenishment or transformation available to individuals, households and communities within the circuits of production and social reproduction.

Hijacking the Narrative: The First World Forum on Natural Capital, #natcap13, and Radical Dissent

Antipode A Radical Journal of Geography - Wed, 07/05/2017 - 10:00
Abstract

The first World Forum on Natural Capital (WFNC) was an important moment in the production of “valued” nature. It brought together bankers, CEOs, and business elites to promote financialized environmental accounting as a solution to ecosystem degradation. Anti-capitalist activists, however, opposed the further intrusion of economic logic to environmental decision-making and resisted its progression. While WFNC organizers were able to advance the concept of “natural capital” through traditional (print and web 1.0) media, they struggled to control the social media narrative. Digital activists were able to challenge the official narrative on Twitter and compel organizers to address the associated social and environmental justice concerns. As such, social media produced the conditions for both abstracting nature into value-bearing commodities and, simultaneously, resisting such abstraction. Drawing on theories of counterpublic organization, public spheres of deliberation, and agonistic confrontation, this paper explores the discursive co-production of nature in a new digitally mediated world.

VRSTNI RED NA IZPITU 7 julij 2017

Obvestila - Tue, 07/04/2017 - 10:42
Kategorije: Novo na oglasni deski

Rezultati izpita GTP 26. junij

Obvestila - Pon., 07/03/2017 - 14:40
Kategorije: Novo na oglasni deski

Kušar - govorilne ure poleti

Govorilne ure - Pon., 07/03/2017 - 09:43
Kategorije: Novo na oglasni deski

Tajništvo (4. 7. 2017)

Obvestila - Pon., 07/03/2017 - 07:16
Kategorije: Novo na oglasni deski

Kolokvij Fg1 - rezultati

Obvestila - Sat, 07/01/2017 - 10:20
Kategorije: Novo na oglasni deski

Distinction and the Ethics of Violence: On the Legal Construction of Liminal Subjects and Spaces

Antipode A Radical Journal of Geography - Sat, 07/01/2017 - 08:45
Abstract

This paper interrogates the relationship among visibility, distinction, international humanitarian law and ethics in contemporary theatres of violence. After introducing the notions of “civilianization of armed conflict” and “battlespaces”, we briefly discuss the evisceration of one of international humanitarian law's axiomatic figures: the civilian. We show how liberal militaries have created an apparatus of distinction that expands that which is perceptible by subjecting big data to algorithmic analysis, combining the traditional humanist lens with a post-humanist one. The apparatus functions before, during, and after the fray not only as an operational technology that directs the fighting or as a discursive mechanism responsible for producing the legal and ethical interpretation of hostilities, but also as a force that produces liminal subjects. Focusing on two legal figures—“enemies killed in action” and “human shields”—we show how the apparatus helps justify killing civilians and targeting civilian spaces during war.

A Comparison of Spatially Varying Regression Coefficient Estimates Using Geographically Weighted and Spatial-Filter-Based Techniques

Geographical analysis - Pet., 06/30/2017 - 12:05

Geographically weighted regression (GWR) is a technique that explores spatial nonstationarity in data-generating processes by allowing regression coefficients to vary spatially. It is a widely applied technique across domains because it is intuitive and conforms to the well-understood framework of regression. An alternative method to GWR that has been suggested is spatial filtering, which it has been argued provides a superior alternative to GWR by producing spatially varying regression coefficients that are not correlated with each other and which display less spatial autocorrelation. It is, therefore, worthwhile to examine these claims by comparing the output from both methods. We do this by using simulated data that represent two sets of spatially varying processes and examining how well both techniques replicate the known local parameter values. The article finds no support that spatial filtering produces local parameter estimates with superior properties. The results indicate that the original spatial filtering specification is prone to overfitting and is generally inferior to GWR, while an alternative specification that minimizes the mean square error (MSE) of coefficient estimates produces results that are similar to GWR. However, since we generally do not know the true coefficients, the MSE minimizing specification is impractical for applied research.

Multi-Type, Multi-Zone Facility Location

Geographical analysis - Pet., 06/30/2017 - 11:55

The placement of facilities according to spatial and/or geographic requirements is a popular problem within the domain of location science. Objectives that are typically considered in this class of problems include dispersion, median, center, and covering objectives—and are generally defined in terms of distance or service-related criteria. With few exceptions, the existing models in the literature for these problems only accommodate one type of facility. Furthermore, the literature on these problems does not allow for the possibility of multiple placement zones within which facilities may be placed. Due to the unique placement requirements of different facility types—such as suitable terrain that may be considered for placement and specific placement objectives for each facility type—it is expected that different suitable placement zones for each facility type, or groups of facility types, may differ. In this article, we introduce a novel mathematical treatment for multi-type, multi-zone facility location problems. We derive multi-type, multi-zone extensions to the classical integer-linear programming formulations involving dispersion, centering and maximal covering. The complexity of these formulations leads us to follow a heuristic solution approach, for which a novel multi-type, multi-zone variation of the non-dominated sorting genetic algorithm-II algorithm is proposed and employed to solve practical examples of multi-type, multi-zone facility location problems.

Facing Gaia: Eight Lectures on the New Climatic Regime


 

The emergence of modern sciences in the seventeenth century profoundly renewed our understanding of nature. For the last three centuries new ideas of nature have been continually developed by theology, politics, economics, and science, especially the sciences of the material world.

The situation is even more unstable today, now that we have entered an ecological mutation of unprecedented scale. Some call it the Anthropocene, but it is best described



Read More...

Facing Gaia: Eight Lectures on the New Climatic Regime


 

The emergence of modern sciences in the seventeenth century profoundly renewed our understanding of nature. For the last three centuries new ideas of nature have been continually developed by theology, politics, economics, and science, especially the sciences of the material world.

The situation is even more unstable today, now that we have entered an ecological mutation of unprecedented scale. Some call it the Anthropocene, but it is best described



Read More...