Rooting out Wi-Fi “dead zones” in large wireless networks that cover whole neighborhoods or cities is an expensive proposition. Pre-deployment testing is so costly that most WiFi providers simply build their networks first and fill in the gaps later. But even that isn’t easy, due to the paucity of inexpensive techniques for mapping out precisely which areas lack coverage.
Cities are being unfairly blamed for most of humanity’s greenhouse gas emissions and this threatens efforts to tackle climate change, warns a study in the October 2008 issue of the journal Environment and Urbanization.
Canadian bedrock more than 4 billion years old may be the oldest known section of the Earth’s early crust.
The law known as No Child Left Behind (NCLB), enacted in 2002, set an ambitious goal: that across the nation, every state would test students annually in reading and math, and that the number of students scoring at the level of “proficient” or higher would rise each year, until all students reached proficiency in the year 2014.
Vienna, 25 September 2008. The successful progress of several vaccine programmes run by AFFiRiS GmbH has prompted investor MIG AG to increase its investment in the company. It has set up two new funds – MIG 5 and MIG 7 – to give private investors in Germany and Austria the opportunity to invest in this promising biotech company. The company decided to take this step for two reasons. First, to ensure the early coverage of future capital demand for the continued successful development of vaccines against Alzheimer’s disease and atherosclerosis and, second, the tremendous potential that the proprietary AFFITOME platform technology offers the global pharmaceutical market.
Science Magazine reports on the science advisors of the two presidential campaigns.
By better managing environmental issues during deployments, U.S. Army units can gain tactical and strategic advantages that will help in combat and post-conflict operations, and boost overall mission success, according to a RAND Corporation study issued today.
An explanation for a strange property of noctilucent clouds–thin, wispy clouds hovering at the edge of space at 85 km altitude–has been proposed by an experimental plasma physicist at the California Institute of Technology (Caltech), possibly laying to rest a decades-long mystery.
Three years ago, Martin Gardner’s good friend, MAA Editorial Director Don Albers interviewed him at length about his childhood, the roots of his fascination with math, and about his career. Over the next few weeks, I’ll be posting the interview in chunks, because his story is absolutely fascinating.
With the high cost of gasoline and diesel fuel impacting costs for automobiles, trucks, buses and the overall economy, a Temple University physics professor has developed a simple device which could dramatically improve fuel efficiency as much as 20 percent.
Massachusetts General Hospital (MGH) researchers are investigating a new approach to gene therapy for brain tumors – delivering a cancer-fighting gene to normal brain tissue around the tumor to keep it from spreading.
A pair of recent studies suggest that e-mail is the most deceptive form of communications in the workplace–even more so than more traditional kinds of written communications, like pen-and-paper.
Eight-year-old children have a radically different learning strategy from twelve-year-olds and adults. Eight-year-olds learn primarily from positive feedback (‘Well done!’), whereas negative feedback (‘Got it wrong this time’) scarcely causes any alarm bells to ring.
Anabolic steroids are synthetic hormones derived from the human male hormone testosterone. The use of steroids has been suspected in professional baseball and other sports where building muscle strength, rather than endurance, is paramount. Power lifting is such a sport.
Can you be sure that some planets have not been created equiped with something better than human thinking?
The way we consider spirituality, the environment and our relationship with others may have to change.
Although school has been back for less than a month, it is likely that many children are already experiencing frustration and confusion in math class. Research at The University of Western Ontario in London, Canada could change the way we view math difficulties and how we assist children who face those problems.
The majority of infertility patients are in favor of using left-over embryos for stem cell research and would also support selling left-over embryos to other couples, according to a recent survey.
Congress should resurrect the nationwide gambling ban that existed through most of the 20th century to help soothe a fragile U.S. economy shaken by the worst credit and financial crisis in decades, a University of Illinois professor and national gambling critic says.
