Results 61 to 70 of about 2,424,945 (201)

The Pulsed Spectra of Two Extraordinary Pulsars

, 2004
We report on X-ray monitoring of two isolated pulsars within the same RXTE field of view. PSR J1811-1925 in the young supernova remnant G11.2-0.3 has a nearly sinusoidal pulse profile with a hard pulsed spectrum (photon index \~1.2).
Gavriil, Fotis, Ibrahim, Alaa, Kaspi, Victoria M., Markwardt, Craig, Ransom, Scott M., Roberts, Mallory S. E., Swank, Jean H., Woods, Pete   +7 more
core   +1 more source

Surface plasmon and photonic mode propagation in gold nanotubes with varying wall thickness [PDF]

, 2011
Gold nanotube arrays are synthesized with a range of wall thicknesses (15 to >140 nm) and inner diameters of ∼200 nm using a hard-template method.
Fireman, Micha, Kohl, Jesse, O'Carroll, Deirdre M.   +2 more
core   +1 more source

Modelling reveals the effect of climate and land use change on Madagascar’s chameleons fauna

Communications Biology
The global biodiversity crisis is generated by the combined effects of human-induced climate change and land conversion. Madagascar is one of the World’s most renewed hotspots of biodiversity.
Alessandro Mondanaro, Mirko Di Febbraro, Silvia Castiglione, Arianna Morena Belfiore, Giorgia Girardi, Marina Melchionna, Carmela Serio, Antonella Esposito, Pasquale Raia   +8 more
doaj   +1 more source

Ferroelectric Polarization Dependent Piezoelectric Hardening in BiFeO3‐BaTiO3 Lead‐Free Ceramics

Advanced Electronic Materials
The relation between the improvement of mechanical quality factor (Qm) and internal electric field (Ei) generated during the aging process in lead‐free piezoelectric BiFeO3‐BaTiO3 ceramics is investigated for hard piezoelectric application of power ...
Myang Hwan Lee, Hae In Choi, Da Jeong Kim, Ji Su Kim, Sang Woo Lee, Yubin Park, Sang Mo Yang, Tae Kwon Song   +7 more
doaj   +1 more source

Annotated Bibliography: The Reference Desk: Grand Idea or Gone Down the River?

, 2018
This bibliography is from a panel presentation at the 2017 ACL Conference. The goal of this panel was to explore different rationales or sets of values that illustrated the continuation of the reference desk and reference service as essential to the ...
Jones, Alison, McCoy, Erin, Rice, Amy C., Walz, Jennifer L.   +3 more
core   +1 more source

k-Center Clustering Under Perturbation Resilience [PDF]

, 2016
The k-center problem is a canonical and long-studied facility location and clustering problem with many applications in both its symmetric and asymmetric forms.
Balcan, Maria-Florina, Haghtalab, Nika, White, Colin   +2 more
core   +1 more source

Editorial

Entrepreneurial Business and Economics Review, 2016
The higher education systems and higher education institutions in Europe, especially in Central and Eastern European countries, are currently facing several challenges.
Jan Brzozowski, Marco Cucculelli
doaj   +1 more source

Simpler grammar, larger vocabulary: How population size affects language

Proceedings of the Royal Society B: Biological Sciences, 2018
Languages with many speakers tend to be structurally simple while small communities sometimes develop languages with great structural complexity. Paradoxically, the opposite pattern appears to be observed for non-structural properties of language such as
Florencia Reali, N. Chater, Morten H. Christiansen   +2 more
semanticscholar   +1 more source

Deformation mechanism of metastable oriented grains in high-purity tantalum under different strain paths

Journal of Materials Research and Technology
High-purity tantalum is used as the sputtering target material for integrated circuits, requiring fine grains and random texture. Understanding different orientation deformation mechanisms, especially the metastable orientation (here {112 ...
Yahui Liu, Qianqian Zhu, Xiaokang Yang, Jing Chen, Yuhai Qu   +4 more
doaj   +1 more source

System of elastic hard spheres which mimics the transport properties of a granular gas [PDF]

, 2005
The prototype model of a fluidized granular system is a gas of inelastic hard spheres (IHS) with a constant coefficient of normal restitution $\alpha$.
A. Astillero, Andrés Santos, Antonio Astillero, C. Cercignani, J. J. Brey, P. Welander, S. Chapman, T. P. C. van Noije, V. Garzó, V. Garzó, V. Garzó, V. Garzó, V. Garzó   +12 more
core   +3 more sources