Background/aims To estimate 2015 global ophthalmologist data and analyse their relationship to income groups, prevalence rates of blindness and visual impairment and gross domestic product (GDP) per ...

NCERT Free Online Physics Classes: The National Council of Educational Research and Training (NCERT) has launched a free online Physics course for Class 12 students on the SWAYAM portal. The course is ...

Abstract: Stereo vision can be achieved with a single camera aided by a flat-face prism. However, large optical distortions may be caused by irregular refraction. To mitigate this deficiency and ...

Abstract: Satellite-based quantum communication is critical in establishing a global quantum network for its ability to achieve thousand-kilometer-level tasks without the requirement of quantum relay.

Department of Chemical and Material Engineering, University of Alberta, Edmonton, T6G 2G6, Canada, and National Center for Upgrading Technology (NCUT), 1 Oil Patch Drive, Devon, Alberta T9G 1A8, ...