Results 51 to 60 of about 468,421 (285)

Empirical Stability Criteria for 3D Hierarchical Triple Systems. I. Circumbinary Planets

open access: yesThe Astronomical Journal
In this work we revisit the problem of the dynamical stability of hierarchical triple systems with applications to circumbinary planetary orbits. We derive critical semimajor axes based on simulating and analyzing the dynamical behavior of 3 × 10 ^8 ...
Nikolaos Georgakarakos   +3 more
doaj   +1 more source

Applied Artificial Intelligence in Materials Science and Material Design

open access: yesAdvanced Intelligent Systems, EarlyView.
AI‐driven methods are transforming materials science by accelerating material discovery, design, and analysis, leveraging large datasets to enhance predictive modeling and streamline experimental techniques. This review highlights advancements in AI applications across spectroscopy, microscopy, and molecular design, enabling efficient material ...
Emigdio Chávez‐Angel   +7 more
wiley   +1 more source

Considering the animating ethos of designing digital first unemployment services: On the motivation of others

open access: yesAustralian Journal of Social Issues, EarlyView.
Abstract This paper explores the animating ethos of digital unemployment services. Unlike human‐to‐human services, where the intention of policy is normally mediated by professionals, digital services are fully designed in the policy imagination. As a result, it is a pressing issue to understand the ethos that animates their development.
Ray Griffin   +2 more
wiley   +1 more source

The epicycle model

open access: yesModelling in Science Education and Learning, 2013
The solutions of the equations of motion for a point mass particle under a conservative force field are generally constrained by a basic set of integrals of motion, which depend on the knowledge about the potential function and on time and space ...
Rafael Cubarsi
doaj   +1 more source

Modification of earth's gravity sphere [PDF]

open access: yesTheoretical and Applied Mechanics, 2013
The standard radius of the Earth's gravity sphere is 917.000 km. Here we present that the radius is 1.400.000 km.
Vujičić Veljko A.
doaj   +1 more source

Perspective Projection of an Ellipse and an Ellipsoid for Analytical View Factor Evaluation

open access: yesHeat Transfer, EarlyView.
ABSTRACT Radiative view factors are fundamental quantities for evaluating radiative heat transfer between different surfaces. While analytical expressions of view factors have been evaluated for various types of basic geometries, including circular disks and spheres, extending these solutions to more complex geometries, such as ellipses and ellipsoids ...
Kaname Sasaki
wiley   +1 more source

Motion of Test Bodies in a Quasi-Newtonian Potential. II. Comparison with Experiments

open access: yesOpen Astronomy, 2003
The paper deals with the motion of test bodies in a Quasi-Newtonian potential for which the expressions corresponding to the effects of General Relativity are found. It is impossible to choose the values of parameters of the potential which could be in a
Pyragas K., Svirskas K.
doaj   +1 more source

Development of n‐type ZnAlInO Semiconductor Materials for Thermoelectric Generators in Aerospace Applications

open access: yesChemistryOpen, EarlyView.
Herein, the synthesis and production of n‐type ZnAlInO semiconductor materials is achieved utilizing sol–gel and cold pressing methods for fabrication in aerospace thermoelectric generators applications. The Seebeck coefficient and power factor values increase with the addition of template samples, reaching a maximum of −162.63 μV K−1 and 0.44 mW mK−2,
Enes Kilinc   +4 more
wiley   +1 more source

Titius-Bode’s Relation and Distribution of Exoplanets [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
The distance distribution in our planetary system has been a controversial matter. Two kinds of important issues on Titius-Bode’s relation have been discussed up to now: one is if there is a simple mathematical relation between distances of natural ...
Heon-Young Chang
doaj   +1 more source

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