Results 1 to 10 of about 4,580,482 (170)

Gaussian Fluctuation for the Number of Particles in Airy, Bessel, Sine, and Other Determinantal Random Point Fields [PDF]

open access: yesJournal of Statistical Physics, 2000
We prove the Central Limit Theorem for the number of eigenvalues near the spectrum edge for hermitian ensembles of random matrices. To derive our results, we use a general theorem, essentially due to Costin and Lebowitz, concerning the Gaussian fluctuation of the number of particles in random point fields with determinantal correlation functions.
Soshnikov, Alexander B.
openaire   +6 more sources

The phase sensitivity of a fully quantum three-mode nonlinear interferometer

open access: yesNew Journal of Physics, 2018
We study a nonlinear interferometer consisting of two consecutive parametric amplifiers, where all three optical fields (pump, signal and idler) are treated quantum mechanically, allowing for pump depletion and other quantum phenomena. The interaction of
Jefferson Flórez   +5 more
doaj   +2 more sources

Pólya fields and Kuroda/Kubota unit formula

open access: yesMathematics Open, 2023
Let K be a number field. The Pólya field concept is used to know when the module of integer-valued polynomials over the ring of integers [Formula: see text] of K has a regular basis. In [C. W.-W.
Charles Wend-Waoga Tougma
doaj   +1 more source

Tamagawa numbers and other invariants of pseudoreductive groups over global function fields [PDF]

open access: yesAlgebra & Number Theory, 2021
We study Tamagawa numbers and other invariants (especially Tate-Shafarevich sets) attached to commutative and pseudo-reductive groups over global function fields. In particular, we prove a simple formula for Tamagawa numbers of commutative groups and pseudo-reductive groups.
openaire   +3 more sources

Plant-Rich Field Margins Influence Natural Predators of Aphids More Than Intercropping in Common Bean

open access: yesInsects, 2022
Field margins support important ecosystem services including natural pest regulation. We investigated the influence of field margins on the spatial and temporal distribution of natural enemies (NEs) of bean pests in smallholder farming systems.
Baltazar J. Ndakidemi   +6 more
doaj   +1 more source

Gender differences in scientific collaborations: Women are more egalitarian than men. [PDF]

open access: yesPLoS ONE, 2017
By analyzing a unique dataset of more than 270,000 scientists, we discovered substantial gender differences in scientific collaborations. While men are more likely to collaborate with other men, women are more egalitarian.
Eduardo B Araújo   +4 more
doaj   +1 more source

Divisions in art activities based on gender in Iran of 80s [PDF]

open access: yesزن در فرهنگ و هنر, 2016
This article is written from sociology of art point of view. The role of social factors influencing people to become artist is an important issue in this field. One of these social factors is one’s gender which is studied here.
Azam Ravadrad
doaj   +1 more source

In Site Soil Seed-Banks: Size, Composition and Persistence across Tropical Successional Stages

open access: yesPlants, 2023
I investigated the size, composition and persistence of the seed-bank in primary forests, secondary forests and old-fields in southern Mexico. I also assessed the contribution of the seed-bank to regeneration relative to other propagule sources.
Julieta Benitez-Malvido
doaj   +1 more source

Interdisciplinary Analysis of Nano, Bio, Information, Cognitive Articles Based on Co-citation Technique [PDF]

open access: yesتحقیقات کتابداری و اطلاع‌رسانی دانشگاهی, 2020
Objective: This study aims assessment interdisciplinary relations in nanotechnology, biotechnology, cognitive and information articles using co-citation technique.Methodology: This study in object aspect, is applied, in method aspect is descriptive and ...
Ghasem azadi ahmadabadi   +1 more
doaj   +1 more source

Effects of Electromagnetic Fields with Frequencies Lower Than 50 Hz and Intensity of 50 μT on Learning and Memory [PDF]

open access: yesIranian Journal of Medical Physics, 2009
Introduction: Biological effects of magnetic fields have been investigated by scientists for many years and a vast amount of research using different frequencies and intensities have been performed on humans and laboratory animals.
Gholamreza Hamzavi   +3 more
doaj   +1 more source

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