Knowledge Update

​New York, Jan 13 (IANS) Your smart watch may not only measure your steps and physiological parameters but also detect when you are falling sick, a new study has revealed. Researchers from the Stanford University found that smart watches and other personal biosensor devices can help detect when people have colds and even signal the onset of complex conditions like Lyme disease and diabetes. "We want to tell when people are healthy and also catch illnesses at their earliest stages," said Michael Snyder, Professor at the Stanford University, US. The study collected a myriad of measurements from participants for up to two years to detect deviations from their normal baseline for measurements such as heart rate and skin temperature. "Because the devices continuously follow these measures, they potentially provide rapid means to detect the onset of diseases that change your physiology," the study noted. It was found that many of these deviations coincided with times when people became ill. For example, heart rate and skin temperature tends to rise when people become ill, said Snyder. To detect these deviations, the researchers wrote a software programme for data from a smart watch called 'Change of Heart'. The devices detected common colds and also detected the presence of Lyme disease in the researcher involved in the study. "This research paves the way for the smart phone to serve as a health dashboard, monitoring health and sensing early signs of illness, likely even before the person wearing it does," the study published in PLOS Biology added.

​Tokyo, Jan 13 (IANS) Nintendo's new gaming console Switch is set to launch worldwide, the gaming giant announced on Friday. Although Switch's price will vary from country to country, it will cost $299 in the US and 29,960 yen (around $260) in Japan, the company said. The console, which will be available in the US, Canada, Japan and several European countries on March 3, seems to have disappointed Japanese investors due to its price, which is higher than that of Sony's Playstation 4 and Microsoft's Xbox One, as Nintendo's shares fell 3.2 per cent one hour before the Tokyo Stock Exchange closed, Efe news reported. Nintendo revealed in October last year that the games machine would be a handheld device that doubles as a home console. Previously code-named NX, the Switch looks like a tablet computer with controllers that attach to its sides, the BBC reported.

Sharjah, Jan 13 (IANS/WAM) The fifth edition of the highly-anticipated Sharjah Children Biennial (SCB) will begin on Sunday and will showcase 376 artworks created by 785 children from across the world.

Held under the banner "A World as Big as Your Imagination", the event will run til February 15th. The competition would be having three categories: Environment, Architecture Design and Fantasy and Reality.

The ceremony will also feature a number of artistic workshops and interactive activities for children under the supervision of expert artists from various genres of architectural, visual and fine arts.

The workshops will be held throughout SCB to enhance children's love of the arts, and provide them with the opportunity to challenge and develop their capabilities further.

Beijing, Jan 13 (IANS) The Chinese New Year, the world's most crowded travel season and the country's most important holiday, began on Friday.

Beijing, Jan 13 (IANS) An oil-electricity hybrid locomotive, the most powerful of its kind, was started in an experiment in extreme cold weather in northeast China, said manufacturing company CRRC Ziyang Co Ltd.

The experiment was conducted in Hulunbuir in the north of Inner Mongolia Autonomous Region, on Thursday morning when the local temperature was minus 40 degrees Celsius, Xinhua news agency reported.

Despite the extreme cold weather, the temperature in the cab was 25 degrees Celsius and the batteries showed a temperature of 12 degrees Celsius, suitable for the operation.

The experiment marked the end of a series of experiments for the hybrid locomotive, said Xiang Jun, chairman of the company based in southwest China's Sichuan Province.

On January 7, the locomotive carried out a successful small operation experiment in environment of minus 30 degrees Celsius in northeast China.

In August 2016, the same locomotive had operated in high temperatures in northwest China's Xinjiang Uygur Autonomous Region.

Hybrid locomotives are environment friendly, energy-saving and less noisy, according to Xiang. 

The successful experiments in both extreme cold and hot weather showed the world's largest-power hybrid locomotive can run in environment with different temperatures, he said.

New York, Jan 13 (IANS) It is very likely that you have a namesake who is very distinct from your personality. To disambiguate you two, a new method has been developed that can tell you from your namesake.

This ambiguity often occurs in bibliographic, law enforcement and other areas.

Computer scientists from the Indiana University-Purdue University Indianapolis (IUPUI) have developed a novel machine-learning method to provide better solutions to this perplexing problem. 

"We can teach the computer to recognise names and disambiguate information accumulated from a variety of sources -- Facebook, Twitter and blog posts, public records and other documents -- by collecting features such as Facebook friends and keywords from people's posts using the identical algorithm," explained Mohammad al Hasan, Associate Professor, IUPUI. 

The new method, unlike the existing methods, can perform non-exhaustive classification so that it can tell whom a new record, which appears in streaming data, belongs to.

"Our method grows and changes when new persons appear, enabling us to recognise the ever-growing number of individuals whose records were not previously encountered. While working in non-exhaustive setting, our model automatically detects such names and adjusts the model parameters accordingly," added Hasan.

The researchers trained computers by using records of different individuals with that name to build a model that distinguishes between individuals with that name, even individuals about whom information had not been included in the training data previously provided to the computer.

The researchers focused on three types of "features" -- bits of information with some degree of predictive power to define a specific individual.

"Relational or association features to reveal persons with whom an individual is associated; text features, such as keywords in documents; and venue features to determine memberships or events with which an individual is currently or was formerly associated," the study noted.

The study was published in proceedings of the 25th International Conference on Information and Knowledge Management.

​London, Jan 13 (IANS) Spending hours in front of digital screen may be harmful for adolescents. However, but moderate use may not harm but increase their well-being, researchers say.

"Digital screens are now an inextricable part of modern childhood. Our findings suggest that adolescents' moderate screen use has no detectable link to well-being and levels of engagement above these points are modestly correlated with well-being," said lead researcher Andrew Przybylski, psychological scientist at the University of Oxford.

The findings showed that as a result of a digital "sweet spot" between low and high technology use, moderate screen time can increase teenagers' well-being.

This sweet spot benefits teenagers' well-being by providing opportunities to develop social connections and skills, the researchers said.

For the study, the researchers examined data measuring screen time and well-being collected from 120,115 teenagers, with an average of 15 year olds. 

Nearly all of the participating adolescents reported spending time using at least one type of digital technology on a daily basis.

The also reported spending more time engaging in digital activities on weekend days than on weekdays and that they spent more time using smartphones in overall compared with watching TV.

Using statistical methods to determine the tipping point for each type of activity, the researchers found that on weekdays, teenagers' well-being peaked at about 1 hour and 40 minutes of video-game play, about 1 hour 57 minutes of smartphone use, about 3 hours and 41 minutes of watching videos, and about 4 hours and 17 minutes of using computers.

However, above these tipping points, screen time turned potentially harmful and was associated with decreased well-being.

The study was published in the journal Psychological Science.

​Washington, Jan 13 (IANS) The moon is at least 4.51 billion years old -- or 40-140 million years older than previously thought, says new research based on an analysis of minerals from the moon called zircons.

These minerals were brought back to Earth by the Apollo 14 mission in 1971 and have now been studied by researchers from University of California-Los Angeles (UCLA).

The moon's age has been a hotly debated topic, even though scientists have tried to settle the question over many years and using a wide range of scientific techniques.

"We have finally pinned down a minimum age for the moon. It's time we knew its age and now we do," said Melanie Barboni, research geochemist in UCLA's department of earth, planetary and space sciences.

The moon was formed by a violent, head-on collision between the early Earth and a "planetary embryo" called Theia.

The new research would mean that the moon formed "only" about 60 million years after the birth of the solar system -- an important point because it would provide critical information for astronomers and planetary scientists who seek to understand the early evolution of the Earth and our solar system.

While scientists cannot know what occurred before the collision with Theia, these findings are important because they will help scientists continue to piece together major events that followed it.

Barboni was able to analyse eight zircons in pristine condition. "Zircons are nature's best clocks. They are the best mineral in preserving geological history and revealing where they originated," added said Kevin McKeegan, a co-author of the study.

The Earth's collision with Theia created a liquefied moon, which then solidified. Scientists believe most of the moon's surface was covered with magma right after its formation. 

"Melanie was very clever in figuring out the moon's real age dates back to its pre-history before it solidified, not to its solidification," said Edward Young, a UCLA professor of geochemistry and cosmochemistry in a paper published in the journal Science Advances.

Previous studies concluded the moon's age based on moon rocks that had been contaminated by multiple collisions. 

​New York, Jan 13 (IANS) Consuming blue maize may help prevent metabolic syndrome -- a cluster of conditions that includes high blood pressure and blood sugar, excess body fat around the waist and abnormal cholesterol, a study conducted in rat models has found.

Physical inactivity, genetic profile and a diet with inadequate energy intake are other factors that drive metabolic syndrome.

Metabolic syndrome also raises an individual's risk of heart disease, stroke and diabetes, the researchers said.

The natural antioxidants present in blue maize may help protect against metabolic syndrome, cardiovascular disease, diabetes as well as cancer, said Rosa Isela Guzman-Geronimoa from the University of Veracruz in Mexico.

In the study, the rats were fed on a high-sugar and high-cholesterol diet for 12 weeks. They were given blue maize extracts during a period of 4 weeks.

The rats showed significant improvement in systolic blood pressure, high density lipoprotein (HDL) cholesterol, and triglyceride levels compared to those not given the extract.

The findings may raise interest in using blue maize as a component of functional foods and nutraceuticals, the researchers said.

Anti-obesity food materials are always in demand and this study brings out not only the importance of blue maize in controlling adipocity, but also the potential role of cholesterol in the development of obesity, the researchers stated.

The study was published in the Journal of Medicinal Food.

​New Delhi, Jan 12 (IANS) If you are still using simple and weak passwords to protect your accounts, be warned that some day all your sensitive information may be leaked.

A research conducted by Russia-based software security company Kaspersky Lab has shown that people across the globe still put their online safety at risk by making bad