Quantization of Reissner-Nordstr\"{o}m Black Holes and Their Non-Singular Quantum Behavior

Quantization of different regions of the Reissner-Nordstr\"{o}m space time (charged black hole) is done in the framework of loop quantum gravity. The geometry of Reissner-Nordstr\"{o}m space-time is expressed in terms of Ashtekar variables which form the classical phase space of such a black hole. Using the loop quantization of phase space, the issue of singularity avoidance of such a black hole is addressed; based on spherically symmetry reduced models of loop quantum gravity, the operator analogue of the diverging factor of scalar curvature of the charged black hole is constructed and is shown to exhibit an upper bounded spectrum. This local criterion, together with the global one (non-singular quantum evolution equation) proves the avoidance of charged black hole singularity in symmetry reduced models of loop quantum gravity.Comment: To be published in the proceeding of Quantum Theory: Reconsideration of Foundations-6 (QTRF-6

AURORA:autonomous real-time on-board video analytics

In this paper, we describe the design and implementation of a small light weight, low-cost and power-efficient payload system for the use in unmanned aerial vehicles (UAVs). The primary application of the payload system is that of performing real-time autonomous objects detection and tracking in the videos taken from a UAV camera. The implemented objects detection and tracking algorithms utilise Recursive Density Estimation (RDE) and Evolving Local Means (ELM) clustering to perform detection and tracking moving objects. Furthermore, experiments are presented which demonstrate that the introduced system is able to detect by on-board processing any moving objects from a UAV and start tracking them in real-time while at the same time sending important data only to a control station located on the ground

Assessment of the knowledge and attitude of the pregnant women who referred to Iran University of Medical Sciences in 2005 toward Islams hygienic instructions during their pregnancy and breast feeding periods

Background and aim: Pregnancy and infancy are as diving profits, which are of the most enjoyable times of women. Islams living doctrine recommends some adwises for pregnant women to have healthy generation with good physical, mental and social dimensions. Therefore, the aim of this study was to evaluate the knowledge and attitude of the pregnant women who referred to Iran University of Medical Sciences in 2005 toward Islam’s hygienic instructions during their pregnancy and breast feeding period. Methods: In this descriptive-analytical study, a total of 300 pregnant women were selected from parental care unite using multistage sampling. The data was gathered through self-reporting questionnaire which contained some questions about the individuals characteristics, attitude and awareness. Subsequently, using χ2, Pearson correlation and Spearman tests, data were analyzed. Results: The percentage of the knowledge about the Islams healthy instructions during pregnancy was graded: good 20.6%, average 64.7% and poor 14.7%. During breast-feeding, the knowledge was 6.3% good, 77% average and 16.7% poor. There was a positive relationship between the women’s level of education and their knowledge about Islamic trainings. The attitude of the women about the instructions during their pregnancy was positive in 68.3% and negative in 31.7% of them. This attitude during breast feeding was positive in 64% and negative in 36% of the women studied. There was relationship between the knowledge toward the instructions and the level of education during pregnancy and also between this knowledge and the number of pregnancy and the level of education (p<0.01). Conclusion: In addition to moderate knowledge and positive attitude of most of samples and undeniable religious force, on promoting health, recommended that health managers programmed to pregnant women care based on Islamic recommendations and health care workers have more attention in their education training