INTRODUCTION It is important to identify the reasons for implant failure when planning future dental treatment. No studies have distinguished the factors that affect implant failure by evaluating the appearance of failed fixtures. PURPOSE This study investigated these factors by evaluating the surface of implant fixtures using quantitative light-induced fluorescence-digital (QLF-D), which inv...

achieving optimal production cycle time for improving manufacturing processes is one of the common problems in production planning. during recent years, different approaches have been developed for solving this problem, but most of them assume that mean quality characteristic is constant over production run length and sets it on customer’s target value. however, the process mean may drift from ...

We present the discovery of five quasars at z ∼ 6 selected from 260 deg of the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along the Celestial Equator. The five quasars with 20 < zAB < 21 are 1–2 magnitudes fainter than the luminous z ∼ 6 quasars discovered in the SDSS main survey. One of them was independently discovered by th...

Abstract The exponentiated Gompertz (EGZ) distribution has been recently used in almost all areas of human endeavours, starting from modelling lifetime data to cancer treatment. Various applications and properties the EGZ are provided by Anis De (2020). This paper explores important under Bayesian discipline using two informative priors: Gamma Prior (GP) Inverse Levy (ILP). is done framework fi...

Abstract The observed lensed fraction of high-redshift quasars (∼0.2%) is significantly lower than previous theoretical predictions (≳4%). We revisit the predicted by models, where we adopt recent measurements galaxy velocity dispersion functions (VDFs) and explore a wide range quasar luminosity function (QLF) parameters. use both analytical methods mock catalogs, which give consistent results....

Quantitative Light-Induced fluorescence (QLF) has been widely used to detect tooth demineralization indicated by fluorescence loss with respect to surrounding sound enamel. The correlation between fluorescence loss and demineralization depth is not fully understood. The purpose of this project was to study this correlation to estimate demineralization depth. Extracted teeth were collected. Arti...

The quality loss function developed by Genichi Taguchi considers three cases, nominal-thebest, smaller-the-better, and larger-the-better. The methodology used to deal with the larger-thebetter case is slightly different than the other two cases. This research employs a term called target-mean ratio to propose a common formula for all three cases to bring about similarity among them. The target-...

We propose a quartic function to represent a family of continuous quality loss functions. Depending on the choice of its parameters the shape of this function within the specification limits can be either symmetric or asymmetric, and it can be either similar to the ubiquitous quadratic loss function or somewhat closer to the conventional step function. We examine this family of loss functions i...

Quasar luminosity function (QLF) shows the active galactic nucleus (AGN) demography as a result of combination growth and evolution black holes, galaxies, dark matter halos along cosmic time. The recent wide deep surveys have improved census high-redshift quasars, making it possible to construct reliable ultraviolet (UV) QLFs at $2\lesssim z\lesssim6$ down $M_{1450}=-23$ mag. By parameterizing ...