Results 71 to 80 of about 123,093 (174)

Precipitation and female experience are major determinants of the breeding performance of Canarian houbara bustards

Wildlife Biology, EarlyView.
Precipitation is one of the main triggers of reproduction in desert‐breeding birds. The unpredictability of rainfall patterns in arid environments has led species to adapt their breeding effort to episodes of abundant food after rainfall. The response is not the same for all individuals in a population, and may vary especially with the age and ...
Juan C. Alonso, Inmaculada Abril-Colón, Alberto Ucero, Carlos Palacín   +3 more
wiley   +1 more source

Optimizing a photon absorber using conformal cooling channels and additive manufacturing in copper

Journal of Synchrotron Radiation, EarlyView.
This study optimizes a Diamond Light Source photon absorber using additive manufactured (AM; 3D printing) conformal cooling channels in copper, achieving a maximum temperature drop of 11%, pressure drop reduction of 82% and examination of the AM print quality and its compliance with synchrotron and particle accelerator hardware applications using ...
Younes Chahid, Carolyn Atkins, Stephen Hodbod, John Robinson, Xia Liu, Stephen Watson, Maia Jones, Mark Cliffe, Dayo Ogunkanmi, Richard Kotlewski, Lee Chapman, Scott Beamish, Jorge Linde Cerezo, Thomas Wearing, Ahmad Baroutaji, Arun Arjunan, Chantal Fowler, Paul Vivian   +17 more
wiley   +1 more source

Detecting axion stars with radio telescopes

Physics Letters B, 2018
When axion stars fly through an astrophysical magnetic background, the axion-to-photon conversion may generate a large electromagnetic radiation power. After including the interference effects of the spacially-extended axion-star source and the macroscopic medium effects, we estimate the radiation power when an axion star meets a neutron star.
Yuta Hamada, Yuta Hamada, Yang Bai
openaire   +4 more sources

An injector testbed based on a direct current gun and an interchangeable very high frequency gun for superconducting continuous‐wave free‐electron lasers

Journal of Synchrotron Radiation, EarlyView.
An injector testbed for continuous‐wave free‐electron lasers based on a direct current gun and an interchangeable very high frequency gun is under construction. Its physical design and performance have been studied carefully.The continuous‐wave free‐electron laser (CW‐FEL), based on superconducting radiofrequency (SRF) technology with an electron bunch
Xinmeng Li, Jitao Sun, Yong Yu, Jiahang Shao, Jiayue Yang, Quan Zhou, Hongli Ding, Lei Shi, Kai Tao, Chenglin Guo, Zhigang He, Zhichao Chen, Zhen Chen, Shaohua Peng, Hongfei Wang, Guoqing Zhang, Baichao Zhang, Zongbin Li, Feng Zhao, Wei Wei, Maomao Huang, Wei Wang, Ming Liu, Chaofeng He, Liangbing Hu, Yaqiong Wang, Han Li, Weiming Yue, Xilong Wang, Guorong Wu, Dongxu Dai, Weiqing Zhang, Xueming Yang   +32 more
wiley   +1 more source

Yebes 40 m radio telescope and the broad band NANOCOSMOS receivers at 7 mm and 3 mm for line surveys. [PDF]

Astron Astrophys, 2021
Tercero F, López-Pérez JA, Gallego JD, Beltrán F, García O, Patino-Esteban M, López-Fernández I, Gómez-Molina G, Diez M, García-Carreño P, Malo I, Amils R, Serna JM, Albo C, Hernández JM, Vaquero B, González-García J, Barbas L, López-Fernández JA, Bujarrabal V, Gómez-Garrido M, Pardo JR, Santander-García M, Tercero B, Cernicharo J, de Vicente P.   +25 more
europepmc   +1 more source

Tracking large bees in open landscapes with active radio tags—Advantages and challenges using stationary receivers

Journal of Animal Ecology, EarlyView.
Studying the spatial ecology of ecologically relevant species supports the development of effective conservation strategies. Recent technological advancements in remote tracking methods now enable researchers to study large flower‐visiting insects and important pollinators, such as carpenter bees.
Sophie Kratschmer, Markus Milchram, Lukas Landler, Stephan Burgstaller, Magdalena Spießberger, Norbert Schuller, Daniel Gröticke, Henrike Wacker, Valentin Dönz, Anna Planitzer, Florian Ihle, Marcela Suarez‐Rubio, Julia Lanner   +12 more
wiley   +1 more source

Compression‐Expansion: Miniaturization, Modularity, and Logistics Beyond Earth

American Anthropologist, EarlyView.
ABSTRACT If the Cold War space race culminated in a return to Earth, at present we are experiencing a renewed interest in space. Drawing on fieldwork among people working in the space sector in Sweden, this article focuses on some of the imaginaries underpinning this resurgence and the contemporary commercialization of space. Specifically, I hone in on
Chakad Ojani
wiley   +1 more source

Alternative Approaches for Estimating Highest‐Density Regions

International Statistical Review, EarlyView.
Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley   +1 more source

Variance Matrix Priors for Dirichlet Process Mixture Models With Gaussian Kernels

International Statistical Review, EarlyView.
Summary Bayesian mixture modelling is widely used for density estimation and clustering. The Dirichlet process mixture model (DPMM) is the most popular Bayesian non‐parametric mixture modelling approach. In this manuscript, we study the choice of prior for the variance or precision matrix when Gaussian kernels are adopted.
Wei Jing, Michail Papathomas, Silvia Liverani   +2 more
wiley   +1 more source

Hunting for Paradoxes: A Research Strategy for Cognitive Science

Topics in Cognitive Science, EarlyView.
Abstract How should we identify interesting topics in cognitive science? This paper suggests that one useful research strategy is to hunt for, and attempt to resolve, paradoxes: that is, apparent or real contradictions in our understanding of the mind and of thought.
Nick Chater
wiley   +1 more source