Water Dams Most dams are designed to accomplish a variety of functions, which include flood control, flat water recreation, hydropower electricity generation, and water supply. Although these seem like good reasons for the existence of dams, this type of constructions bring greater negative effects than good ones. The "environment effects of dams include loss of land and biological resources to inundation, reservoir sedimentation and downstream erosion, and hydrological changes unfavorable to many native or desirable species." Dams just strangle rivers and the perfect example of the damage dams cause to rivers is what is happening to the Mekong River in Asia. The Mekong river covers more than 4500 kilometers through 6 countries. It crosses through the Chinis providence of Yunnan, borders Birmania, It divides Thailand and Laos, cuts through Cambodia, passes through South Vietnam, and finally ends in the China Ocean. The Mekong sustains 100 million people, who not only depend on this river for their alimentation or water, but also for irrigation, and for traveling, and sometimes just for recreation. The Thailandese people call it the "Mother "of rivers. Today like many rivers in the world, the Mekong is in danger. The reason is the massive and not well planned construction of dams. These constructions have started to threaten the ecosystem of the river, as well as the subsistence of dozens of communities along its shore. This dams, which have mostly been build last decate, provide energy to southwest Asia. But they also stop the natural migration of fishes, and affect their reproduction and alter the level and quality of water. Some people who live around the river refer to the dams constructions as evil and they say that they have destroyed the happiness of their family. Like in many other places in the world the constructions of dams in the Mekong has caused deforastation, it has destroyed the wild life and has caused the displacement of thousands of poor people who live along the river.
What is Bluetooth? Wireless has been around many years in the form of IR and RF, but it has always had limited usability. Various companies realized the need for a new wireless technology that was both cheap to make and didn't require a lot of power. So came Bluetooth. Bluetooth was developed t...
Even current PDAs such as the Palm Pilot and Pocket PC will be Bluetooth upgradeable. ... The technology industry has embraced the Bluetooth standard with open arms. ... This simple device is a small demonstration of the limitless potential of Bluetooth. Bluetooth can and will work virtually everywhere. ... Bluetooth will take communication technology into the new century. ...
The Bluetooth wireless technology provides short range, wireless connectivity between common devices. ... The "Bluetooth passkey usage and pairing procedure". ... Hence, a fixed Bluetooth passkey in the HS is reasonable. ... Furthermore, the HS implementation should make sure that changing the Bluetooth passkey is only possible over an authenticated and encrypted Bluetooth link or a wired connection. HS manufacturers are encouraged to use randomly generated initial Bluetooth passkey values that are unique for each HS where the initial Bluetooth passkey should be stored in a non-volatile memory...
BLUETOOTH Technology is constantly advancing in all different directions. ... This technology is known as Bluetooth. ... Bluetooth opens us up to a new level of data communications. ... Bluetooth works on a 24.5 GHz ISM "free band" which means that there is no restrictions for travelers using Bluetooth enabled equipment. ... Bluetooth technology seems to be a very important step in communications field. ...
What is Bluetooth? ... Bluetooth technology allows interfacing the two. ... That is what Bluetooth will do. The name Bluetooth comes from a tenth century Scandinavian king, Harald Bluetooth, who managed to unite several unruly kingdoms. ... That's where Bluetooth comes in. ...
Bluetooth - What's it all about? ... Bluetooth was created in May of 1998 by a group of companies calling themselves the Bluetooth Special Interest Group, or SIG. ... So why "Bluetooth-? ... Bluetooth was actually a pretty impressive guy. ... What does the future hold for Bluetooth? ...
The reason behind this is because of the products that use bluetooth and the products that use wireless networks. ... Normal bluetooth devices can connect to other bluetooth devices while being ten meters away at the most, while wireless networked devices can connect to other devices at a range of 100 meters. It is said that in the short term as bluetooth gains popularity in the United States, users will tend to give their devices bluetooth capabilities using external devices, but on the long-term bluetooth will tend to be integrated more and more different appliances and devices. ... Blue...
The first question for many people is "What is Bluetooth?" Bluetooth technology is named after Harold II "Bluetooth"; a Danish King that was famous for his traveling exploits and peacefully unifying Denmark and Norway. ... Bluetooth technology was developed in 1994 by L. ... In order to have a device Bluetooth certified, to must pass testing by a Bluetooth Special Interest Group (SIG) to ensure it will be able to interact with all other Bluetooth certified products. ... Bluetooth utilizes a 9mm x 9mm microchip, which functions as a radio link. ...
Bluetooth wireless technology was created to replace the cables used on mobile devices. ... Bluetooth is being marketed as a low-cost RF link that will replace the cable from the network adapter (Wireless Lan card ). ... The aim of bluetooth is to operate in the smallest battery-powered devices, the Bluetooth specification calls for a small form factor, low power consumption and low cost. ... Some common usage scenarios with Bluetooth is device interoperability (Known as cable replacement); peer to peer collaboration between multiple PDAs and notebooks; Notebook and PDA internet access via m...
