Results 101 to 110 of about 148,572 (261)

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

open access: yesBritish Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

Spontaneous CP violation and neutral flavour conservation [PDF]

open access: green, 1989
Gerhard F. Ecker   +2 more
openalex   +1 more source

A century of theories of balancing selection

open access: yesBiological Reviews, EarlyView.
ABSTRACT Traits that affect organismal fitness are often highly genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature – after all – ‘selects’ the best genotypes at the expense of those that fall short.
Filip Ruzicka   +10 more
wiley   +1 more source

Sensitivity to CP $$ \mathcal{CP} $$ -violating effective couplings in the top-Higgs sector

open access: yesJournal of High Energy Physics
The observed baryon asymmetry of the Universe requires new sources of charge-parity ( CP $$ \mathcal{CP} $$ ) violation beyond those in the Standard Model.
Víctor Miralles   +3 more
doaj   +1 more source

Neutron Electric Dipole Moment on the Lattice

open access: yesEPJ Web of Conferences, 2018
For the neutron to have an electric dipole moment (EDM), the theory of nature must have T, or equivalently CP, violation. Neutron EDM is a very good probe of novel CP violation in beyond the standard model physics.
Yoon Boram   +2 more
doaj   +1 more source

The seesaw path to leptonic CP violation

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
Future experiments such as SHiP and high-intensity $$e^+ e^-$$ e + e - colliders will have a superb sensitivity to heavy Majorana neutrinos with masses below $$M_Z$$ M Z .
A. Caputo   +4 more
doaj   +1 more source

Racial bias in criminal sentencing: Historical evidence from Chinese railway workers in British Columbia

open access: yesCanadian Journal of Economics/Revue canadienne d'économique, EarlyView.
Abstract Do discriminatory attitudes held in the public influence public institutions? We study this question within the context of the criminal justice system of historical British Columbia (BC). During the late 1870s and early 1880s, an influx of Chinese immigrant workers employed in the building of the Canadian Pacific Railway (CPR) was the catalyst
Kris Inwood, Ian Keay, Blair Long
wiley   +1 more source

Final-state rescattering mechanism of charmed baryon decays

open access: yesJournal of High Energy Physics
The dynamical studies on the non-leptonic weak decays of charmed baryons are always challenging, due to the large non-perturbative contributions at the charm scale. In this work, we develop the final-state rescattering mechanism to study the two-body non-
Cai-Ping Jia   +3 more
doaj   +1 more source

Representativeness of the Natura 2000 network for preserving plant biodiversity in the European Union

open access: yesConservation Biology, EarlyView.
Abstract The Natura 2000 (N2K) network of protected areas is one of the main tools for area‐based conservation in the European Union (EU), yet its role in preserving plant biodiversity requires better understanding. We examined data kept in the European Vegetation Archive from over 1.2 million vegetation plots and obtained over 14.2 million plant ...
Michele Di Musciano   +41 more
wiley   +1 more source

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