Results 141 to 150 of about 1,977 (250)

Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures

High Voltage, EarlyView.
ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li, Guizao Huang, Zhijin Zhang, Yang Liu, Guoqiang Gao, Guolin Yang, Xi Yang, Guangning Wu   +7 more
wiley   +1 more source

Apex predators exploit advantageous snow conditions across hunting modes

Journal of Animal Ecology, EarlyView.
Advantageous snow conditions—in terms of snow depth and density—are among the most important features of the winter landscape for two apex predators, regardless of hunting strategy. In a warming climate, the knock‐on effects of a diminishing snowpack may reduce the hunting success of multiple large carnivore species.
Benjamin K. Sullender, Taylor R. Ganz, Ross Mower, Jessica D. Lundquist, Brian N. Kertson, Thomas M. Newsome, Aaron J. Wirsing, Laura R. Prugh   +7 more
wiley   +1 more source

Riding out the storm: Behavioural responses of a large herbivore to high‐Arctic winds

Journal of Animal Ecology, EarlyView.
Using 11 years of GPS data from 61 muskoxen in Northeast Greenland, we show how increasing wind speed and Arctic storms reshape movement modes and habitat selection. Muskoxen respond by bedding in dense vegetation, prioritizing energy conservation over foraging, revealing a simple behavioural strategy with potential fitness consequences under ...
Floris M. van Beest, Lars H. Hansen, Niels M. Schmidt   +2 more
wiley   +1 more source

Terrain Passability Modeling for Cross-Country Unmanned Ground Vehicle Navigation

This study aimed to model a high-precision map for cross-country small autonomous vehicle—unmanned ground vehicle (UGV) movements across various terrains.
Potić, Ivan, Đorđević, Dejan
core  

Asymmetric niche partitioning in large omnivores in response to anthropogenic disturbances within subarctic ecosystems

Journal of Animal Ecology, EarlyView.
Anthropogenic disturbances associated with mineral extraction influenced space use and activity patterns in grizzly bears, and to a much lesser extent in black bears, in a subarctic ecosystem, signalling an asymmetric response. Abstract Niche partitioning is an evolutionary process that allows the coexistence of multiple species in a landscape. However,
Ludovick Brown, Chrystal Mantyka‐Pringle, Joël Potié, Pascale Savage, Megan Hornseth, Jason T. Fisher   +5 more
wiley   +1 more source

‘Let's Turn the Grass Into Meat’: Animal Husbandry as Women's Work in Cold War North Korea

Gender &History, EarlyView.
ABSTRACT In postcolonial North Korea, the future of the nation was said to be a function of the feedlot. Unobtainable on the battlefields of the recently ended Korean War, liberation and unification of the peninsula became a question of competitive developmentalism.
Sunho Ko, Derek J. Kramer
wiley   +1 more source

Light Paths and Dark Valleys: Topographic Complexity and Mammal Occupancy in a Semi-Arid Mountain Landscape. [PDF]

Ecol Evol
Beukes M, Perry T, Parker D, Mgqatsa N.
europepmc   +1 more source

Laying Grounds for Dialogue: Exploring Anti‐Racist Activists' Negotiations of Emotions When Challenging Colour‐Blindness in Norway

The British Journal of Sociology, EarlyView.
ABSTRACT In this article, I explore how 36 Norwegian anti‐racist activists of colour negotiate emotions when engaging with the white majority population. Much recent research on racist ideology draws on Bonilla‐Silva's framework of colour‐blindness, arguing that the white majority nowadays is more likely to deny systemic racism.
Kine Marie Michelet
wiley   +1 more source

Genetic and phenotypic variation in wood tiger moths from the Caucasus: insights into male warning color variation

Insect Science, EarlyView.
Coloration serves several fitness‐related functions, including thermoregulation, immunity, social signaling, sexual selection, and predator avoidance. Consequently, color polymorphism can have a significant impact on a species’ interactions with its environment, including its relationships with predators, prey, and potential mates. The wood tiger moth (
Juan A. Galarza, Ossi Nokelainen, Melanie N. Brien, Cristina Ottocento, Bibiana Rojas, Janne K. Valkonen, Tamar Chunashvili, Tõnis Tasane, Chris D. Jiggins, Johanna Mappes   +9 more
wiley   +1 more source

Essays in political and development economics

, 2014
 This research analyses the role of terrain ruggedness and elite domination as obstacles undermining the cooperation and cohesiveness of groups in societies.
P Jimenez Ayora (14066952)
core