Starting from infinitely many supercompact cardinals, we force a model of ZFC where אω2+1 satisfies simultaneously a strong principle of reflection, called ∆-reflection, and a version of the square principle, denoted (אω2+1). Thus we show that אω2+1 can satisfy simultaneously a strong reflection principle and an anti-reflection principle.

Several studies suggest that obsessive-compulsive disorder (OCD) is common among college students. Therefore, identification of factors contributing to the symptoms of this disorder is considered one of the most important issues in the field of education. The purpose of this study is to predict the severity of OCD based on self-focused attention styles and sense of guilt in students. Sample gro...

A Mathematical model has been considered to study the reflection and refraction phenomenon of plane wave at the interface of an isotropic liquid medium and a triclinic (anisotropic) half-space. The incident plane qP wave generates three types of reflected waves namely quasi-P (qP), quasi-SV (qSV) and quasi-SH (qSH) waves in the tric...

We present a navigation and planning system using vision for extracting non predefined landmarks, a dead-reckoning system generating the integrated movement and a topological map. Localisation and planning remain possible even if the map is partially unknown. An omnidirectional camera gives a panoramic images from which unpredefined landmarks are extracted. The set of landmarks and their azimut...

Normal reflection from a fractured reservoir is analyzed using frequency-dependent seismic attributes. Processing of 3D low-frequency seismic data from a West-Siberian reservoir produced an accurate delineation of the fractured hydrocarbon-bearing zones. P-wave propagation, reflection and transmission at an impermeable interface between elastic and dual-porosity poroelastic media is investigate...

We study the preservation under < κ-closed forcing extensions and the reflection of stationary subsets of Pκλ in the case when λ is a singular cardinal with cf(λ) < κ. In particular we discuss those under GCH.

In this paper a novel anti-reflection (AR) coating based on silicon nano-bars is designed and its impact on the performance of crystalline silicon (c-Si) thin-film solar cells is extensively studied. Silicon nano-bars with optimized size and period are embedded on top of the active layer, under a 100nm Si3N4 layer. As a result of the proposed layer stack, an inhomogeneous intermediate layer wit...