Results 11 to 20 of about 1,713,760 (284)

Nitrogen acquisition, fixation and transfer in maize/alfalfa intercrops are increased through root contact and morphological responses to interspecies competition

open access: yesJournal of Integrative Agriculture, 2021
Nitrogen (N) fixation by legumes and nitrogen transfer to cereals have been considered as important pathways for overyielding and higher N use efficiency in cereal/legume intercropping systems.
Ze-qiang SHAO   +6 more
doaj   +1 more source

The Impact of Early Neighborhood Cohesion, and Its Mechanism, on Cognitive Function in Later Life

open access: yesFrontiers in Psychiatry, 2022
ObjectivesThis study aimed to explore the impact of early neighborhood cohesion, and its mechanism, on cognitive function in later life.MethodsIn total, 10,727 Chinese elderly, aged 60–90, forming two datasets (2014 and 2018) from the China Health and ...
Tao Zhou   +5 more
doaj   +1 more source

Conceptual bases of a normal (just) state and their constitutional stipulation

open access: yesRussian Journal of Economics and Law, 2020
Objective: to formulate the conceptual foundations of the model of a normal (fair) state and justify the possibility and necessity of their constitutional consolidation.Methods: the dialectical approach to the cognition of social phenomena has determined
V. A. Tolstik
doaj   +1 more source

Copula-Based Normalizing Flows

open access: yesCoRR, 2021
Normalizing flows, which learn a distribution by transforming the data to samples from a Gaussian base distribution, have proven powerful density approximations. But their expressive power is limited by this choice of the base distribution. We, therefore, propose to generalize the base distribution to a more elaborate copula distribution to capture the
Mike Laszkiewicz   +2 more
openaire   +2 more sources

Development and Validation of a Short Version Sport Orientation Questionnaire for Chinese Adolescents (SOQ-CA)

open access: yesFrontiers in Psychology, 2020
A noted decrease in adolescent physical activity in the past decade has resulted in an increase in health risks. Sport orientation correlates closely with physical activity. A sufficient assessment scale that measures an individual’s sport orientation is
Jindong Chang   +5 more
doaj   +1 more source

Normal frames and the validity of the equivalence principle [PDF]

open access: yes, 1997
We investigate the validity of the equivalence principle along paths in gravitational theories based on derivations of the tensor algebra over a differentiable manifold. We prove the existence of local bases, called normal, in which the components of the
Bozhidar Z Iliev   +14 more
core   +2 more sources

Optimal normal bases

open access: yesDesigns, Codes and Cryptography, 1992
Let \(K\subset L\) be a finite Galois extension of fields, \(n\) the degree of the extension, and \(G\) the Galois group. A basis of \(L\) over \(K\) is called normal if it is of the form \((\sigma(\alpha))_{\sigma\in G}\) for some \(\alpha\in L\).
Lenstra, H.W., Gao, S.
openaire   +3 more sources

Observational Equivalence of Conditional Belief Bases

open access: yesProceedings of the International Florida Artificial Intelligence Research Society Conference, 2023
In nonmonotonic reasoning, a conditional of the form ‘If A then usually B’ is typically accepted if a situation where both A and B hold is deemed to be more plausible, more probable, or less surprising, etc., than a situation where A holds, but B does ...
Christoph Beierle   +2 more
doaj   +1 more source

Singular Higher-Order Complete Vector Bases for Finite Methods [PDF]

open access: yes, 2004
This paper presents new singular curl- and divergence- conforming vector bases that incorporate the edge conditions. Singular bases complete to arbitrarily high order are described in a unified and consistent manner for curved triangular and ...
Graglia, Roberto, Lombardi, Guido
core   +1 more source

Gröbner–Shirshov Bases Theory for Trialgebras

open access: yesMathematics, 2021
We establish a method of Gröbner–Shirshov bases for trialgebras and show that there is a unique reduced Gröbner–Shirshov basis for every ideal of a free trialgebra.
Juwei Huang, Yuqun Chen
doaj   +1 more source

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