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I discuss the nature of ‘hotspots’ and ‘jet knots’ in the kpc-scale structures of powerful radio galaxies and their relationship to jet-environment interactions. I describe evidence for interaction between the jets of FRI sources and their local environments, and discuss its relationship to particle acceleration, but the main focus of the paper is the hotspots of FRIIs and on new observational ...

Introduction: In recent years, we have seen a tremendous growth in communications devices, such as mobiles and tablets. Also, the appeal to connect to the Internet through wireless systems has increased significantly. Given these changes in everyday life, the approach to cognitive works and problem-solving and decision-making in a complex system that has become increasingly imp...

„Shared WiFi-Communities“, deren Mitglieder private WLAN-Zugänge für die Nutzung durch Dritte frei geben, bieten ein großes Marktpotenzial. Nutzer können mittels mobiler Endgeräte über Hotspots anderer Community-Mitglieder kostenlos auf das Internet zugreifen oder mit der Bereitstellung von breitbandigem WiFi Geld verdienen. Zwischen Angebot und Nachfrage vermitteln überwiegend kommerzielle Ins...

Compared to the telephone, email based customer care is increasingly becoming the preferred channel of communication for corporations and customers. Most email-based customer care management systems provide a method to include template texts in order to reduce the handling time for a customer’s email. The text in a template is suitably modified into a response by a customer care agent. In this ...

BACKGROUND The use of devices emitted microwave radiation such as mobile phones, wireless fidelity (Wi-Fi) routers, etc. is increased rapidly. It has caused a great concern; the researchers should identify its effects on people's health. We evaluated the protective role of Vitamin C on the metabolic and enzymatic activities of the liver after exposure to Wi-Fi routers. MATERIAL AND METHODS 70...