once the greek astronomy's most worthy masterpiece, ptolemy’s almagest, was translated into arabic, many scientific works were produced in islamic civilization. the genre known as hayʾa, which deals with the cosmological aspect of astronomy, gradually seperated itself from other astronomical branches. while these branches were in relation with each other, their goals were different. comput...

OBJECTIVE Aggression and hyperactivity/inattention each are linked to risk of alcohol use disorder (AUD), but their unique contributions remain ambiguous. The present study disaggregated these two domains developmentally and examined the relation between childhood behavior trajectories and adolescent substance use. METHOD A total of 335 children of alcoholic and nonalcoholic fathers were stud...

The prevalence of ADHD was studied among 200 UAE school-age children. Variables that distinguish ADHD and non-ADHD children were examined, including child characteristics, parents’ sociodemographics, socioeconomic status, family environment, and parental style of influence. Results indicated that 12.5 % of the children had ADHD symptomatology, and that the prevalence ratio varied across the thr...

for the 49th annual Canadian Undergraduate Physics Conference (CUPC) [October 2013] Title Reverse-Engineering the Copernican Revolution: Exploring How Inverse Problems Lead to Models Authors Christopher Ni1, Christopher Bergevin2 1 A.Y. Jackson Secondary School, Toronto, Canada 2 York University, Department of Physics & Astronomy, Toronto, Canada Abstract Centuries of careful observation of the...

We present Far Ultraviolet Spectroscopic Explorer (FUSE) observations of interstellar molecular hydrogen (H2) in two Galactic high-velocity clouds (HVCs). Molecular hydrogen absorption is detected in the Magellanic Stream (abundance ∼ 0.3 solar) toward the Seyfert galaxy Fairall 9 in the lowest three rotational states (J = 0− 2) at vLSR = +190 kms , yielding a total H2 column density of log N(H...