Bøger af Ali Ansari

Denna antologi utforskar utmaningarna för ledarskap och statskonst i en allt mer komplex värld. Genom att se till vårt förflutna såväl som till vår samtid undersöker världsledande forskare och skribenter hur ledarskapsidéerna har utvecklats genom historien för att ge oss en större förståelse för statskonsten.

INTRODUCTION TO FIBER OPTIC COMMUNICATIONIn history, we read that, man has employed several artificial techniques to send information over long distances. For Example, they used reflected sunlight or smoke signals during day time and fire beacons at night time. At 18th Century, they used semaphore method. (i.e. sending signals by moving flags). Then Semaphore method was overtaken by Telegraph on land and flashing and occulting of lamps at sea. Later on these methods were replaced by telephones and by wireless telegraphy. Now information is transmitted as a sequential stream of light pulses, guided along optical fibers. It acts as the transmission medium to carry the light beam loaded with information.Fiber optic communication is a method which is used to transmit information from one place to another place by sending light pulses through an optical fiber. Optical fiber is a good medium for long distance broadband communication. It plays an important role due to its properties like high bandwidth, high level of security and long distance transmission. Fiber optic communication has great advantages over the conventional cable communication system.The most important advantage is the availability of tremendous bandwidth which is a measure of the information carrying capacity. Some of the other advantages are: i) less weight, ii) no hazards of short circuits, iii) low cost and iv) immunity to temperature and moisture conditions.

Iran refuses to relent in developing nuclear technology, despite U.N. sanctions. Rumors persist that Israel is drawing up plans for military strikes. Neither the emboldened Iranian president Mahmoud Ahmadinejad nor the embattled President Bush has relented in his war of words. How did we get here? Iran expert Ali Ansari sets the current crisis in the context of a long history of mutual antagonism. From the overthrow of Mosaddeq in 1953 to the hostage crisis in 1979 and, more recently, the Gulf War and the War in Iraq, both Iranian and American politicians have forged conflicting narratives about an "evil empire" lying half a world away-resulting in a mutual mistrust that may ultimately lead to war.