Results 21 to 30 of about 5,172,015 (348)

Leukocyte Expression of Type 1 and Type 2 Purinergic Receptors and Pro-Inflammatory Cytokines during Total Sleep Deprivation and/or Sleep Extension in Healthy Subjects

open access: yesFrontiers in Neuroscience, 2017
The purinergic type P1 (adenosine A1 and A2A) receptors and the type P2 (X7) receptor have been suggested to mediate physiological effects of adenosine and adenosine triphosphate on sleep.
Mounir Chennaoui   +11 more
doaj   +1 more source

The State of the Art in Constraining Axion-to-Nucleon Coupling and Non-Newtonian Gravity from Laboratory Experiments

open access: yesUniverse, 2020
Constraints on the Yukawa-type corrections to Newton’s gravitational law and on the coupling constant of axionlike particles to nucleons obtained from different laboratory experiments are reviewed and compared.
Vladimir M. Mostepanenko   +1 more
doaj   +1 more source

Constraints on predicate invention [PDF]

open access: yes, 1991
This chapter describes an inductive learning method that derives logic programs and invents predicates when needed. The basic idea is to form the least common anti-instance (LCA) of selected seed examples.
Buntine   +5 more
core   +1 more source

Zeno dynamics and constraints [PDF]

open access: yes, 2003
We investigate some examples of quantum Zeno dynamics, when a system undergoes very frequent (projective) measurements that ascertain whether it is within a given spatial region. In agreement with previously obtained results, the evolution is found to be
Facchi, P.   +4 more
core   +4 more sources

Visualizing genetic constraints [PDF]

open access: yes, 2013
Principal Components Analysis (PCA) is a common way to study the sources of variation in a high-dimensional data set. Typically, the leading principal components are used to understand the variation in the data or to reduce the dimension of the data for ...
Gaydos, Travis L.   +6 more
core   +3 more sources

Accelerated optimization evaluation of the main technical characteristics of the passenger aerial ropeway [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2018
In the article the mathematical model and the technique of the accelerated optimization estimation of the main technical characteristics of the passenger aerial ropeway (step and height of intermediate supports, tension force of the bearing ropes) are ...
Lagerev A.V., Lagerev I.A.
doaj   +1 more source

The basis and sustainability of the new growth model of the Chinese economy [PDF]

open access: yesMeđunarodni Problemi, 2013
The Chinese model of economic growth has produced impressive results in the past several decades, while the rates of economic growth and exports and imports growth have been the highest in the world.
Antevski Miroslav
doaj   +1 more source

Distribution Constraints: The Chase for Distributed Data [PDF]

open access: yes, 2020
This paper introduces a declarative framework to specify and reason about distributions of data over computing nodes in a distributed setting. More specifically, it proposes distribution constraints which are tuple and equality generating dependencies ...
Geck, Gaetano   +2 more
core   +2 more sources

Constraint acquisition

open access: yesArtificial Intelligence, 2017
Constraint programming is used to model and solve complex combina- torial problems. The modeling task requires some expertise in constraint programming. This requirement is a bottleneck to the broader uptake of constraint technology. Several approaches have been proposed to assist the non-expert user in the modelling task. This paper presents the basic
Bessiere, Christian   +3 more
openaire   +1 more source

Constraint Programming [PDF]

open access: yesRevue Ouverte d'Intelligence Artificielle, 2000
This article recounts the story of constraint programming, one of the most remarkable and enduring scientific contributions of Alain Colmerauer. It is a personal story, having lived through, and contributed to, the events that are reported here.
openaire   +3 more sources

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