OBJECTIVE The aim of the study was to report the mental and physical health of a population-based cohort of Gulf War and Gulf Era veterans 20 years after the war. METHODS A multimode (mail, Web, or computer-assisted telephone interviewing) heath survey of 14,252 Gulf War and Gulf Era veterans. The survey consisted of questions about general, physical, mental, reproductive, and functional heal...

The novel concept of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is investigated, where incident signals can be transmitted reflected to users located at different sides the surface. In particular, fundamental coverage range STAR-RIS aided two-user communication networks studied. A sum maximization problem formulated for both non-orthogonal multiple ...

This paper investigates unmanned aerial vehicle (UAV) data collection systems with different multiple access schemes, where a rotary-wing UAV is dispatched to collect from ground nodes (GNs). Our goal maximize the minimum throughput GNs for both orthogonal (OMA) and non-orthogonal (NOMA) transmission, subject energy budgets at GNs, namely \emph{double limitations}. 1) For OMA, we propose an eff...

pollutions. recently, both persian gulf and gulf of oman are experiencing several types of pollution including oil spills and heavy metal pollutions as well as harmful algal bloom (hab) caused by biological and environmental changes. theiroccurrence of the red tide or harmful algal bloom during fall and winter 2008-2009 caused numerous unknown factors in the strait of hormuz, persian gulf and g...

red beds, conglomerates and salt were considered azoic and problematic rocks, but paleopalynology and inorganic geochemistry proved to be useful for placing them in time and space. in the early last century, in mexican ne region, only three mesozoic red bed units were differentiated, dated as late triassic to late jurassic. it was important tratigraphically to place them properly as they were c...

Mobile learning (M-learning) has become an important educational technology component in higher education. M-learning makes it possible for students to learn, collaborate, and share ideas among each other with the aid of internet and technology development. However, M-learning acceptance by learners and educators is critical to the employments of M-learning systems. Attitudes towards M-learning...

In common with many rapidly growing nations, Qatar was experiencing a traffic fatality rate (in population terms) of about five times that experienced by many Western nations, including Australia. Like other Gulf states, Qatar had undergone rapid economic and social growth in the past several decades, but had not benefited from an evolved road safety culture which had existed in the US, Western...