Results 141 to 150 of about 40,952 (301)
Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads
The RAND Journal of Economics, EarlyView.ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley +1 more source
Better Approximation of Betweenness Centrality.
, 2008 Estimating the importance or centrality of the nodes in large networks has recently attracted increased interest. Betweenness is one of the most important centrality indices, which basically counts the number of shortest paths going through a node ...
Robert Geisberger +2 more
core
geohabnet: An R package for mapping habitat connectivity for biosecurity and conservation
Methods in Ecology and Evolution, EarlyView.Abstract Habitat connectivity is critical for the conservation of endangered and endemic species, and conversely, it can hinder efforts to contain the spread of harmful biological agents. Here, we introduce geohabnet: a general, spatially explicit, network‐based R package for evaluating, estimating and mapping landscape connectivity from continuous ...
Aaron I. Plex Sulá +6 more
wiley +1 more source
Animal Conservation, EarlyView.The potential impact of bat species extinction on the number of their ectoparasitic fly species, based on interaction data for Brazil. As bat host species are removed over time, more connected species (green) would experience steeper declines and lead to greater ectoparasite losses when compared to a random extinction model (gray).
Nathan Lorenzo de Sena Gotti +3 more
wiley +1 more source
Animal Conservation, EarlyView.Wild‐sourced wildlife trade is not only increasing in volume but also changing in network structure. Using three decades of CITES trade records, we found that the wild‐sourced wildlife trade has become increasingly connected and taxonomically uneven, with Anthozoa contributing a growing share.
Jing Wang +3 more
wiley +1 more source
American Anthropologist, EarlyView.ABSTRACT The Arabic phrase Allāhu a‘lam—“God knows best”—is used frequently in everyday Muslim speech and to conclude seemingly assertive statements or fatwas. At its heart lies the recognition that God is the All‐Knowing, whereas humans know next to nothing. Reflecting on this recognition, this essay discusses Sufi refusals of the ethnographic project
Amira Mittermaier
wiley +1 more source
Pośrodku, pomiędzy (between in-between)
La piscine en textes et en images, 2023 openaire +2 more sources
Andrology, EarlyView.ABSTRACT Background Pro‐inflammatory cytokines, TNF and IL‐1B, are essential for testicular homeostasis. Diacerein, an anti‐inflammatory drug, inhibits these cytokines, impairing M2 macrophages and Leydig cells (LCs). However, its impact on Sertoli cells (SCs) and M1 (CD68) macrophages remains unknown.
Elide Loise Freitas de Jesus +6 more
wiley +1 more source
‘We need solidarity’: Reflections on Building and Troubling Solidarity in Research Ethics in Myanmar
Asia Pacific Viewpoint, EarlyView.ABSTRACT Calls for solidarity by civil society are taking place alongside changes in how researchers navigate shifting research landscapes. Yet what solidarity‐based research entails in practice and how this might guide, critique, or challenge institutionalised ethics can be elusive.
Vanessa Lamb +3 more
wiley +1 more source
LLM‐based prior elicitation for Bayesian graphical modeling
British Journal of Mathematical and Statistical Psychology, EarlyView.ABSTRACT In the Bayesian graphical modeling framework, priors on network structure encode theoretical assumptions and uncertainty about the topology of psychological constructs under study. For instance, the Bernoulli prior specifies the probability of each pairwise interaction, the Beta–Bernoulli prior governs expected network density, and the ...
Nikola Sekulovski +2 more
wiley +1 more source