The aim of this paper is to introduce a research review for the effect of Mobile phone radiation on human health and the possible relation between Mobile phone radiation and brain tumor. Mobile phones become increasingly prevalent throughout our society. In the year 2016, it was estimated that there were 4 billion cellular phone users worldwide; the number is growing by one million every month ...

Tanzania telecommunication sector has witnessed fast growth in the number of mobile telephone users now served by seven cellular operators. Until February 2012, there were about 26 million mobile phone subscribers served by more than 4,000 base stations spread all over the country. Despite the many advantages brought by these systems, there is increased public concern over possible adverse heal...

Many cellular phone provocation studies have been conducted since the question of increased health risk from extended usage of cellular phones became a social issue. Internationally, most studies have been conducted regarding the effects of GSM cellular phones on blood pressure and heart rate of adult volunteers. On the other hand, very few provocation studies have been conducted regarding the ...

The underground shopping mall has the constructional problem of the fire evacuation. Also, the people sometimes lose their direction and information of current time in the mall. If the emergencies such as terrorist explosions or gas explosions are happened, they have to go out soon. Under such circumstances, inside of the mall has high risk for life. In this research, the authors propose a way ...

The need for multiband, multimode band switching at low insertion loss while maintaining excellent linearity in mobile phones is driving the need for RF MEMS-based switches. Since this switching problem gets even more acute as new complex waveforms, such as WiMAX are added to this mix, this article looks at the current state of development in RF MEMS switches and discusses its impact on 3G cell...

In this paper, we present a robust algorithm to character classes. In addition, our experiments have shown recognize extracted text from grocery product images captured and image processing. HE use of digital cameras to capture text from natural Sciences,3005 Bern, Switzerland (e-mail: [email protected]). Science, University of Central Florida, Orlando, FL 32816, USA (e-mail: foroosh@cs....

With over 2 billion cellular telephones in daily use around the world, cell phones in just over 30 years have moved from technological oddities to a major force in the computing world. Because of their ubiquity, cellphones represent a natural platform for enabling community-based participatory research. Unfortunately, although they outnumber desktop platforms by at least a factor of two [3, 2],...

In this paper the design of a multiband compact antenna for the integration into the new multi function mobile phones is presented. The antenna is matched to operate at GSM 920 MHz, WI-Fi 2.4 GHz and HiperLan 5.1 GHz standards with low SAR levels. Return loss coefficient and radiation pattern of this antenna are computed in free space as well as in the presence of head. The specific absorption ...