2009/11/03

Virtual WiFi helps a user connect to multiple IEEE 802.11 networks with one WiFi card. VIt works by exposing multiple virtual adapters, one for each wireless network to which connectivity is desired. Virtual WiFi uses a network hopping scheme to switch the wireless card across the desired wireless networks. Switching between networks is transparent to the applications, such that the user feels she is connected to multiple wireless networks simultaneously. Virtual WiFi is implemented as an NDIS intermediate driver, and a user-level service in Windows XP. Virtual WiFi interacts with the card device driver at the lower end, and network protocols at the upper end. The buffering protocol is implemented in the kernel and the switching logic is implemented as a user-level service....

2010/09/09

Strong currents, extreme depths, and the distance from land and medical facilities have always made diving the Andrea Doria a hazardous endeavor. It is even more so today. The Doria is not the dive that it used to be. The hull is collapsing badly, and the top of the wreck is now below 190 ft. Many of the places that divers used to visit have deteriorated beyond recognition. Gimbel's hole, once the famous entry to the inside of the wreck, is now no more than a closed-off depression. Every year, as the hull sinks further into itself, the dive becomes deeper, more dangerous, and more pointless. Once the "Mount Everest of Shipwreck Diving", the heyday of the Andrea Doria is over. I have never been there, and have no desire to go, but I know a lot of people who have, including some of the most experienced....

2010/09/09

SMS Emden was a light cruiser of the Imperial German Navy in World War I. The Emden raided Allied shipping in the Indian Ocean early in the war, sinking or capturing thirty Allied merchant vessels and warships before being run aground by her captain to prevent her from sinking, after engaging more powerful HMAS Sydney at the Battle of Cocos....

2010/09/09

Year-long free trial of TIBCO Silver Spotfire