Car phones fuel battle
نویسندگان
چکیده
منابع مشابه
Car phones and car crashes: some popular misconceptions.
in a widely cited medical journal, in which we reported an association between cellular telephone calls and motor vehicle collisions. During that week we participated in more than 50 media interviews because we think scientists have an obligation to communicate with society. During subsequent years we have stayed in the academic field analyzing the limitations, implications and misquotations of...
متن کاملUsing Corn to Fuel Your Car: A Good Environmental Choice?
DOE technology assessments evaluate use of ethanol as a vehicle fuel Alternative fuels offer the advantages of reduced emissions and petroleum use, but how do you choose among the different fuels? DOE’s David Rodgers finds full-energy-cycle assessments useful. A recent study showed that using ethanol made from corn reduces greenhouse gas emissions by 16-28% and petroleum use by 73-75% as compar...
متن کاملThe Ethanol - Gas Flex Fuel car : What is the option value of choosing your own Fuel ?
Renewable energy sources are becoming more important as the world’s supply of fossil fuels decrease and also due to environmental concerns. Since 2003, when the ethanol-gasoline flex fuel car became commercially available in Brazil, the growth of this market has been significant, to the point where currently 40% of the fuel consumption in Brazil is from renewable biofuels. This has been made po...
متن کاملOn the Implementation of Servers for Large Scale CAR Systems based on Mobile Phones
Collaborative Augmented Reality (CAR) systems allow multiple users to share a real world environment including computer-generated images in real time. The hardware features of most current mobile phones include wireless network capabilities that offer a natural platform for CAR systems. However, the potential number of clients in CAR systems based on mobile phones is much larger than on CAR sys...
متن کاملSpeech enhancement for hands-free car phones by adaptive compensation of harmonic engine noise components
This paper presents a method for enhancing speech disturbed by car noise. The proposed method cancels the powerful harmonic components of engine noise by adaptive filtering which utilizes the known rpm signal available on the CAN bus in modern cars. The procedure can be used as a preprocessing method for classical broad-band noise reduction as it is able to cancel the engine noise – and thus a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1989
ISSN: 0028-0836,1476-4687
DOI: 10.1038/339088a0