Background and Aim: Space maintenance is an important process in the mixed dentition as a preventive measure for multiple malocclusion problems related to the loss of arch length. The awareness of parents and the satisfaction of children are two critical factors determining the efficacy of space maintainers. The aim of this study was to as-sess the level of parents’ awareness of space maintaine...

The advent of modernity in Iran weakened many structures and practices, including social hangouts in cities; therefore, the public was cynical about this space. While hangouts, as a third-place and public space in a city, promote social capital, vibrant centers, and citizenship education, Tehran Daneshjoo Park, as a public space with an urban scale and physical and social features, can also be ...

Abstract The spontaneous emission spectrum from a driven three-level atom placed inside a double-band photonic crystal has been investigated. We use the model which assumes the upper levels of the atomic transition are coupled via a classical driving field. The transition from one of the upper levels to lower level couples to the modes of the modified reservoir, and the transition from the oth...

The aim of this paper is to investigate the boundedness and compactness Stevic-Sharma operator T?1,?2,? from QK(p, q) QK,0(p,q) spaces Zygmund-type space little space. We also give upper lower estimations for norm T?1,?2,?.

In the present paper, we are contemplating the influences of heterogeneities and pre-stresses on the propagation of Love-type waves in an initially stressed heterogeneous transversely isotropic layer of finite thickness lying over an inhomogeneous half space. The material constants and pre-stress have been taken as space dependent and arbitrary functions of depth in the respective media. To sim...

green space, as a social development indicator has environmental, social, cultural, economical, and skeletal aspects and to be able to play its role effectively, the first and most important step is to select an appropriate site for it. site selection necessitates stability analysis of urban green space. the main three steps are identifying stability factors, ahp-based weighting factors and lay...