Results 31 to 40 of about 42,407 (194)

BVAR: Bayesian Vector Autoregressions with Hierarchical Prior Selection in R

open access: yesJournal of Statistical Software, 2021
Vector autoregression (VAR) models are widely used for multivariate time series analysis in macroeconomics, finance, and related fields. Bayesian methods are often employed to deal with their dense parameterization, imposing structure on model ...
Nikolas Kuschnig, Lukas Vashold
doaj   +1 more source

Subjective and Objective Health of the Population Aged 50+ and the Welfare State Regimes in 16 European Countries

open access: yesInternational Journal of Management and Economics, 2014
Health at 50+ issues are particularly important now, when the inevitable increase in the old-age dependency ratio calls for governmental involvement in measures that are aimed at mitigating the negative effects of population aging in Europe.
Romaniuk Joanna
doaj   +1 more source

HighFrequencyCovariance: A Julia Package for Estimating Covariance Matrices Using High Frequency Financial Data

open access: yesJournal of Statistical Software, 2022
High frequency data typically exhibit asynchronous trading and microstructure noise, which can bias the covariances estimated by standard estimators. While a number of specialized estimators have been proposed, they have had limited availability in open ...
Stuart Baumann, Margaryta Klymak
doaj   +1 more source

Non-local properties of a symmetric two-qubit system

open access: yes, 2005
Non-local properties of symmetric two-qubit states are quantified in terms of a complete set of entanglement invariants. We prove that negative values of some of the invariants are signatures of quantum entanglement.
A R Usha Devi   +9 more
core   +1 more source

Screening and identification of marine alginate lyase-producing bacteria and optimization of enzyme production conditions [PDF]

open access: yesZhongguo niangzao
Alginate lyases are mostly derived from marine bacteria with unique living environments. Using sodium alginate as the sole carbon source, a strain with high-yield alginate lyase from 56 strains of marine bacteria was screened using primary screening by ...
HU Mengdi, LI Yaozu, ZHANG Xiaoyong, MO Meiqing, GAO Xiangyang
doaj   +1 more source

Model identification and model analysis in robot training [PDF]

open access: yes, 2008
Robot training is a fast and efficient method of obtaining robot control code. Many current machine learning paradigms used for this purpose, however, result in opaque models that are difficult, if not impossible to analyse, which is an impediment in ...
Billings, S.A.   +2 more
core   +2 more sources

Beta decays with momentum space Majorana spinors

open access: yes, 2004
We construct and apply to beta decays a truly neutral local quantum field that is entirely based upon momentum space Majorana spinors. We make the observation that theory with momentum space Majorana spinors of real C parities is equivalent to Dirac's ...
Ahluwalia   +9 more
core   +1 more source

Na3Al(AsO4)2

open access: yesActa Crystallographica Section E, 2013
The structure of the title compound trisodium aluminium bis(arsenate), Na3Al(AsO4)2, is built up from AlO4 and AsO4 corner-sharing tetrahedra, forming an undulating two-dimensional framework parallel to (100).
Noura Fakhar Bourguiba   +2 more
doaj   +1 more source

Achieving Carbon Neutrality: Strategic Pathways to Sustainability and Net Zero in Manufacturing Supply Chains

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Reaching global net‐zero targets has become an urgent priority as businesses and nations face increasing pressure to reduce greenhouse gas emissions. Achieving carbon neutrality in manufacturing supply chains requires comprehensive systemic changes across business processes.
Vimal K. E. K.   +5 more
wiley   +1 more source

How Consumers Contest Legitimacy: Skepticism Toward Corporate Social Responsibility

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Consumer skepticism toward Corporate Social Responsibility (CSR) initiatives operates not only as an individual‐level response but also as a societal governance mechanism that disciplines firms and reshapes organizational legitimacy. Drawing on in‐depth interviews with consumers in an emerging Latin American economy, this study advances an ...
Francine Zanin Bagatini   +2 more
wiley   +1 more source

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