The study of stellar oscillations-asteroseismology-has revolutionized our understanding of the physical properties of the Sun and similar potential for other stars has been demonstrated in recent years. In particular, as-teroseismic studies can constrain the stellar size, temperature and composition, which are important parameters to our understanding of planetary structure and evolution. This ...

This paper introduces a niching technique called GAS (S stands for species) which dynamically creates a subpopulation structure (taxonomic chart) using a radius function instead of a single radius, and a ‘cooling’ method similar to simulated annealing. GAS offers a solution to the niche radius problem with the help of these techniques. A method based on the speed of species is presented for det...

In order to achieve high-accuracy measurement of radius of curvature of optical sphere, ultra-high accuracy radius of curvature testing device is developed by dual-frequency laser interferometer and Fizeau interferometer based on cat’s eye and confocal method. Through analyzing the error source models of radius of curvature testing, optical configuration of the testing device has been optimized...

In the ongoing HATNet survey we have detected a giant planet, with radius 1.33±0.06RJup and mass 1.06± 0.12MJup, transiting the bright (V = 10.5) star GSC 03239-00992. The planet is in a circular orbit with period 3.852985± 0.000005days and mid-transit epoch 2,454,035.67575± 0.00028 (HJD). The parent star is a late F star with mass 1.29± 0.06M⊙, radius 1.46± 0.06R⊙, Teff ∼ 6570± 80K, [Fe/H] = −...

Introduction: proper geographical access to hospital medical facilities will increase people’s visits to receive non-emergency services and no delay in providing emergency services. This research aimed to determine the level of access to hospital medical facilities with Geographical Information System in Yazd in 2019. Methods: This research is descriptive and applied. The required data for ana...

In this paper, a new definition of numerical radius for adjointable operators in Hilbert -module space will be introduced. We also give a new proof of numerical radius inequalities for Hilbert space operators.

The black hole binary system LMC X-3 has been observed by virtually every X-ray mission since the inception of X-ray astronomy. Among the persistent sources, LMC X-3 is uniquely both habitually soft and highly variable. Using a fully relativistic accretion disk model, we analyze hundreds of spectra collected during eight X-ray missions that span 26 years. For a selected sample of 391 RXTE spect...

The determination of gyration radius is a strong research for configuration of a Macromolecule. Italso reflects molecular compactness shape. In this work, to characterize the behavior of theprotein, we observe quantities such as the radius of gyration and the average energy. We studiedthe changes of these factors as a function of temperature for Acetylcholine receptor protein in gasphase with n...