Results 1 to 10 of about 273,908 (268)

Revisiting the Transit Timing and Atmosphere Characterization of the Neptune-mass Planet HAT-P-26 b

open access: yesThe Astronomical Journal, 2023
We present a transit-timing variation (TTV) and planetary atmosphere analysis of the Neptune-mass planet HAT-P-26 b. We present a new set of 13 transit light curves from optical ground-based observations and combine them with light curves from the Wide ...
Napaporn A-thano   +13 more
doaj   +1 more source

Parental socioeconomic status and the timing of first marriage: What is the role of unmarried cohabitation? Results from a cross-national comparison

open access: yesDemographic Research, 2021
Background: Previous research has shown that individuals from high-status families enter marriage later than those from low-status families. However, in many Western societies, it has become common to cohabit prior to marriage.
Anne Brons   +2 more
doaj   +1 more source

Genomic region associated with run timing has similar haplotypes and phenotypic effects across three lineages of Chinook salmon

open access: yesEvolutionary Applications, 2021
Conserving life‐history variation is a stated goal of many management programs, but the most effective means by which to accomplish this are often far from clear.
Stuart C. Willis   +4 more
doaj   +1 more source

Space–time variational methods for Maxwell's equations [PDF]

open access: yesPAMM, 2019
AbstractThe efficient and accurate numerical solution of the time–dependent Maxwell equations is one of the most challenging tasks, see, e.g., [1]. Besides semi–discretization methods such as the method of lines and Laplace transformation approaches, space–time variational formulations became popular in recent years.
Julia I. M. Hauser, Olaf Steinbach
openaire   +1 more source

Qatar-1: indications for possible transit timing variations [PDF]

open access: yes, 2013
Aims. Variations in the timing of transiting exoplanets provide a powerful tool for detecting additional planets in the system. Thus, the aim of this paper is to discuss the plausibility of transit timing variations (TTVs) on the ...
J. H. M. M. Schmitt   +3 more
core   +1 more source

PROBING FOAMY SPACE–TIME WITH VARIATIONAL METHODS [PDF]

open access: yesInternational Journal of Modern Physics A, 1999
A one-loop correction of the quasilocal energy in the Schwarzschild background, with flat space as a reference metric, is performed by means of a variational procedure in the Hamiltonian framework. We examine the graviton sector in momentum space, in the lowest possible state.
openaire   +3 more sources

Individual Variation in Parturition Timing within and among Years for a Bat Maternity Colony

open access: yesFrontiers in Bioscience-Scholar, 2023
Background: In monoestrous species, the timing of reproduction can have important impacts on offspring survival. For heterotherms in temperate areas, parturition timing is constrained by cold weather survival strategies, such as hibernation and torpor ...
Julia Sunga   +2 more
doaj   +1 more source

Telomere-to-telomere human DNA replication timing profiles

open access: yesScientific Reports, 2022
The spatiotemporal organization of DNA replication produces a highly robust and reproducible replication timing profile. Sequencing-based methods for assaying replication timing genome-wide have become commonplace, but regions of high repeat content in ...
Dashiell J. Massey, Amnon Koren
doaj   +1 more source

Variability of Interplanetary Shock and Associated Energetic Particle Properties as a Function of the Time Window Around the Shock

open access: yesThe Astrophysical Journal, 2023
We study the effect of sampling windows on derived shock and associated energetic storm particle (ESP) properties in 296 fast-forward interplanetary shocks using Advanced Composition Explorer measurements at 1 au between 1998 February and 2013 August. We
K. Moreland   +5 more
doaj   +1 more source

A time variational method to couple heterogeneous time integrators

open access: yesEuropean Journal of Computational Mechanics, 2010
This paper is devoted to a brief presentation of recent research results upon structural mechanics code coupling in transient analysis. The domain is supposed to be decomposed into a series of sub domains which are treated independently with their own time integration scheme and or their own code. The paper gives a general method which allows to couple
Alain Combescure   +3 more
openaire   +2 more sources

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