purpose: to investigate associations between computer use data and sleep quality among university students. materials and methods: this descriptive, cross-sectional study was performed on 312 students of tehran university of medical sciences, iran. data was collected using epworth sleepiness scale (ess), insomnia severity index (tsi), pittsburgh sleep quality index (psqi), and a background and ...

This paper presents an investigation on the performance of the Non-Orthogonal Multiple Access (NOMA) in the power domain scheme. A Power Allocation (PA) method is proposed from NOMA throughput expression analysis. This method aims to provide fair opportunities for users to improve their performance. Thus, NOMA users can achieve rates higher than, or equal to, the rates obtained with the convent...

The GM-MDS conjecture of Dau et al. (ISIT 2014) speculates that the MDS condition, which guarantees the existence of MDS matrices with a prescribed set of zeros over large fields, is in fact sufficient for existence of such matrices over small fields. We prove this conjecture.

introduction: ergonomics is the science of improvement of the work environment, job and equipment and adapting them to the human capabilities and limitations. observing ergonomic principles of computer application is essential for the computer users. lack of attention to these principles would decrease efficiency and cause irreparable somatic complications. the present study assesses the knowle...