Results 131 to 140 of about 135,378 (342)
Abstract Many newcomer children spend a ‘silent year’ in elementary school classrooms while they adjust to a new culture and language. This often delays inclusion in learning and forming friendships with peers. For refugee children with disabilities (RCDs) this phase may last for 3 years or more, impacting their mental health and sense of belonging ...
Susan Barber
wiley +1 more source
Time delay of photons coupled to Weyl tensor in a regular phantom black hole
Time delay of the photons coupled to the Weyl tensor in a regular phantom black hole is investigated in both weak and strong deflection gravitational lensing. We find that the time delay in the weak deflection lensing strongly depends on the phantom hair
Xu Lu, Yi Xie
doaj +1 more source
Revealing dark matter dress of primordial black holes by cosmological lensing
Stellar-mass primordial black holes (PBHs) from the early Universe can directly contribute to the gravitational wave (GW) events observed by LIGO, but can only comprise a subdominant component of the dark matter (DM).
Masamune Oguri+2 more
doaj
Gravitational Lensing by Galaxy Quantization States [PDF]
We show how our theory of large-scale gravitational quantization explains the large angle gravitational lensing by galaxies without requiring "dark matter". A galaxy is treated as a collective system of billions of stars in each quantization state with each star experiencing an average gravitational environment analogous to that for nucleons in the ...
arxiv
Experimental investigation of spreading dynamics of glycerol droplets on a heated surface
Abstract The dynamics of droplets impacting on solid surfaces are widely encountered in industrial applications. This paper presents an experimental study of the spreading dynamics of droplets of liquids with a temperature‐dependent viscosity on a heated horizontal sapphire surface.
Merve Durubal+4 more
wiley +1 more source
Embedded in context: How time and distance affect the convergence of personnel selection practices
Abstract The debate on convergence versus divergence or stasis in human resource management (HRM) practices over time is still ongoing. We look at configurations of organisations' personnel selection practices and empirically analyse the role of geographic, cultural and regulatory institutional distance between countries for emerging similarity or ...
Torsten Biemann+2 more
wiley +1 more source
Gravitational Lensing Limits on Early-Type Galaxies [PDF]
Gravitational lenses are a unique new constraint on the structure of galaxies. We review the evidence that most lenses are early-type galaxies, the optical properties of the lens galaxies, the evidence against constant M/L models, recent work on the axis ratios of the mass distribution, and the role stellar dynamics plays in gravitational lensing.
arxiv
Cosmological applications of gravitational lensing [PDF]
It was recognized very early that the gravitational lens effect can be used as an efficient cosmological tool. Of the many researchers who foresaw the use of lensing, F. Zwicky and S. Refsdal should be explicitly mentioned. The perhaps most accurate predictions and foresights by these two authors are as follows: Zwicky estimated the probability that a ...
openaire +4 more sources
Hydrogel microwells with customizable bottom design: A one‐step approach to spheroid formation
Abstract Conical microwells featuring a variety of bottom‐shape features have received increased recognition because of their enhanced surface characteristics that improve the in vitro‐in vivo correlation in a wide range of biological applications, such as in three‐dimensional cell culture models, specifically cell spheroidal formation, and drug ...
Ahmad A. Manzoor+5 more
wiley +1 more source
Polarization of the CMB cold spot by the gravitational lensing of a cosmic void and texture
The cold spot is one of the observed CMB anomalies proposed to be produced by various primary and secondary effects. In this work, we study the gravitational lensing of some of the candidates that could produce the cold spot, namely a huge void and a ...
M Farhang, S M S Movahed
doaj