There are more men in hard science and engineering and there are a variety of explanations for why, everything from the sexism notion, promoted by those in the social sciences, to the idea that the physical sciences and engineering don't seem directly related to helping people, which is an explanation offered by women who choose a life science or medicine. One odd notion, typified by prominent friend of Obama Dr. Larry Summers while he was at Harvard, was that women were not as good at math.
Well-practiced motor skills like riding a bike are extremely stable memories that can be effortlessly recalled after years or decades. In contrast, a new study shows that changes to motor skill memories occurring over the course of a single practice session are not immediately stable, according to researchers.
We're all familiar with the old saying that you never forget how to ride a bike and perhaps personally familiar with riding off on a bike years after last putting pedals under your feet. This experience highlights the incredible stability possible for motor skill memories, especially those for well-practiced skills. However, the stability of the new motor memories formed on the shorter timescale of a single practice session has been under debate.
Sexual dysfunction in women can be linked to low resting heart rate variability, a finding that could help clinicians treat the condition, according to a study by psychologists from The University of Texas at Austin.
Heart rate variability (HRV) -- the variation in the time intervals between a person's consecutive heartbeats -- can indicate how well an individual responds to physiological and environmental changes. Low resting heart rate variability has been associated with several mental health conditions, such as depression, anxiety and alcohol dependence, as well as erectile dysfunction in men.
The inclusion of experimenters who are unlikely to become habitual users in e-cigarette prevalence studies is of 'questionable' value for monitoring population public health trends, finds research published online in the journal Tobacco Control.
A more valid approach, setting the threshold at a minimum of use on 6 out of the past 30 days, would eliminate many of those who are motivated primarily by curiosity and unlikely to become regular users, and it would provide a more accurate picture of use, say the researchers.
A telecommunications law academic in Australia has recommended for laws to be enacted criminalising the application of face recognition technology to visual images online that enable the identity of a person or people to be ascertained without their consent.
New research published in Liver Transplantation, a journal of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society, reports that younger patients, those who are married, and those with Child-Pugh C disease—the most severe measure of liver disease—are more likely immigrants, divorced patients and those at the lowest income levels were less likely to have a potential live donor volunteer for liver donation.-->
21 states have opted not to expand Medicaid under the Affordable Care Act (ACA), arguing that the expansion would be too expensive. And since California had to convince taxpayers with a state government mandate to remain revenue neutral on the program, based on promises by Democrats in Washington, D.C., and are looking at an $80 million deficit the moment Federal subsidies expire, it seems like those 21 states are right.
But economists at Northwestern University and Columbia University’s Mailman School of Public Health argue that the cost to hospitals from uncompensated care in those states roughly equals the cost of Medicaid expansion.
Nitric oxide (NO) is a highly stable molecule that is also highly reactive and a free radical, meaning a single, unpaired electron is present in its molecule. NO plays the role of a mediator between elements and helps them combine. Radicals are regularly generated in many metabolic pathways. Some of these radicals can exist in a free form and subsequently interact with various tissue components resulting in dysfunction.
The land planarian Platydemus manokwari, or New Guinea flatworm, is a highly invasive species, already reported in many territories in the Pacific area, and as well as in France. This is the only land planarian in the '100 worst invasive alien species' list and it has now been found in additional localities including islands in the Pacific area, Puerto Rico, the first record in the Caribbean, and the first report in mainland U.S., in Florida.
We can use lightning rods to increase the probability of it striking at a specific location but its exact path remains unpredictable.
Perhaps not for long. At a smaller scale, discharges between two electrodes behave in the same manner, streaking through space to create electric arcs where only the start and end points are fixed. Knowing that, it may be possible to control the current so that it follows a predetermined path, say Professor Roberto Morandotti and colleagues from
INRS Énergie Matériaux Télécommunications research centre
who have discovered a way to guide electric discharges - and even steer them around obstacles - using lasers at the Advanced Laser Light Source (ALLS) facility.
A rigorous analysis of more than 20,000 medical records concludes that erectile dysfunction drugs, such as Viagra, are not a cause of melanoma, an often deadly form of skin cancer, despite the higher risk for the disease among users of these drugs.
The analysis, led by researchers at NYU Langone Medical Center and its Laura and Isaac Perlmutter Cancer Center, of medical records for some 20,235 mostly white men suggests instead that the likely source of the observed uptick in malignant melanoma risk among users of erectile dysfunction drugs is socioeconomic and lifestyle based.
To introduce myself: I’m a professional mathematician, an amateur cook and an enthusiastic eater. The ideas in this essay are distilled from years of formal reasoning, mad culinary experiments and adventurous meals. In short, I’ve found that:
I do mathematics for much the same reasons that I cook.
Renewable energy targets mandates and subsidies now in place in 164 countries powered the growth of solar, wind and other green technologies to record-breaking energy generation capacity in 2014. So to advocates that means CO2 emissions and growth do not have to go hand-in-hand. To critics, the fact that these alternative energy schemes only work when there are mandates and subsidies means fossil fuels should be cleaner, not eliminated.
According to REN21's latest Renewables Global Status Report, policymakers continued to focus on adapting existing policies to keep pace with rapidly changing costs and circumstances.