background and aims: internet seems to be increasingly involved a major part of the daily lives of population. in recent years, many reports have confirmed the huge number of internet users worldwide. this article is seeking to explore the factors contributing to the tendency to internet in students of shahrekord university of medical sciences (skums) and aimed to recommend some preventive stra...

All solutions of the no-birefringence conditions for nonlinear electrodynamics are found. In addition to known Born-Infeld and Plebanski cases, we find a ``reverse Born-Infeld'' case, which has limit Plebanski, an ``extreme-Born-Infeld'' arises as Lagrangian constraint. Only weak-field limit, only extreme-Born Infeld avoid superluminal propagation in constant electromagnetic backgrounds, but al...

One of the critical design driving load cases for modern large onshore/offshore wind turbines is power production in extreme turbulence. According to the IEC 61400-1 edition 3 design standard, the normal production extreme loads are extrapolated and compared to the extreme loads obtained under extreme turbulence input. This study shows that using a probabilistic approach and the first order rel...

Charged particle swarm optimization (CPSO) is well suited to the dynamic search problem since inter-particle repulsion maintains population diversity and good tracking can be achieved with a simple algorithm. This work extends the application of CPSO to the dynamic problem by considering a bi-modal parabolic environment of high spatial and temporal severity. Two types of charged swarms and an a...

Even confirmed economic imperialists typically acknowledge that economic theory does not apply to the seriously mentally ill. Building on psychiatrist Thomas Szasz’s philosophy of mind, this article argues that most mental illnesses are best modeled as extreme preferences, not constraining diseases. This perspective sheds light not only on relatively easy cases like personality disorders, but a...

Reduced trophic resources can pose relevant constraints to the development of freshwater animals with complex life cycles. For amphibians, food deprived environments, such as high-altitude ponds and springs groundwaters are frequently used for breeding. The aim this study is outline conditions leading extreme cases delayed larval increased size at metamorphosis a European widespread amphibian, ...

eXtreme Programming (XP) lässt sich systematisch so anpassen, dass es für komplexe und lang laufende Projekte anwendbar wird. Dadurch können die positiven Eigenschaften des XP auch für große Projekte eingesetzt werden, ohne die Kontrolle über die Projekte zu verlieren.