The evolution to a well-expected technology in wireless-communications maturity is in progress. Complementary applications are being suggested for such purposes, which might be possibly effective from the already ongoing research on high-altitude-platform systems. Herein, we introduce a HAPS-based system for delivering broadband communications intended to be operational at L band. A physical-st...

While recent reports have commented on the elevated ambient levels of hazardous air pollutants (HAPs) in certain areas of Houston, relative to other cities, few studies have assessed the health effects of HAPs for Houstonians and none have evaluated the association between ambient levels of these pollutants and lymphohematopoietic cancer risk in this population. To begin to address this deficit...

Hazardous air pollutants (HAPs) are compounds shown to cause cancer or other adverse health effects. We analyzed population-based childhood cancer incidence rates in California (USA) from 1988 to 1994, by HAP exposure scores, for all California census tracts. For each census tract, we calculated exposure scores by combining cancer potency factors with outdoor HAP concentrations modeled by the U...

In the past decades, hazardous air pollutants (HAPs), so-called air toxics or toxic air pollutants, have been detected in the atmospheric air at low concentration levels, causing public concern about the adverse effect of long-term exposure to HAPs on human health. Most HAPs belong to volatile organic compounds (VOCs). More seriously, most of them are known carcinogens or probably carcinogenic ...

Recently, artificial neural networks have been utilized to improve handoff algorithms due to its ability to handle large data in fast processing. ANN helps in taking the handoff decision based on RSS, speed, traffic intensity, and directivity. RBF network is used for making a handoff decision to the chosen neighbor BS. Efficient handoff algorithm enhances the capacity and QoS of cellular system...

Issues with tracking, precision pointing, and Doppler shift are the major sources of performance loss in laser inter-satellite communication that can severely decrease coverage overall satellite constellations. As a solution to these problems, we propose cooperation strategy which high altitude platform station (HAPS) staying at quasi-stationary position contributes connectivity. In this setup,...

Public health protection from air pollution can be achieved more effectively by shifting from a single-pollutant approach to a multi-pollutant approach. To develop such multi-pollutant approaches, identifying which air pollutants are present most frequently is essential. This study aims to determine the frequently found carcinogenic air toxics or hazardous air pollutants (HAPs) combinations acr...

Direct detection of intrinsic defects in halide perovskites (HaPs) by standard methods utilizing optical excitation is quite challenging, due to the low density most samples this family materials (≤1015 cm–3 polycrystalline thin films and ≤1011 single crystals, except melt-grown ones). While several electrical can detect defect densities <1015 cm–3, such as deep level transient spectroscopy (DL...

Free-space optical communication is becoming a mature technology that has been demonstrated in space number of times the last few years. The Japanese National Institute Information and Communications Technology (NICT) carried out some most-significant in-orbit demonstrations over three decades. However, this not reached wide commercial adoption yet. For reason, NICT currently working towards de...