Scientists warn of 'global sleep crisis' due to social pressures

May 7, 2016

Washington, May 7: Social pressures are forcing people to cut back on their sleep, contributing to a "global sleep crisis," according to a new study based on research collected through a smartphone app.

ScientistsIt enabled scientists from the University of Michigan to track sleep patterns around the world -- gathering data about how age, gender and the amount of natural light to which people are exposed affect sleep patterns in 100 countries -- and better understand how cultural pressures can override biological rhythms.

"The effects of society on sleep remain largely unquantified," says the study published Friday in the journal Science Advances.

"We find that social pressures weaken and/or conceal biological drives in the evening, leading individuals to delay their bedtime and shorten their sleep."

Lack of sleep is mostly affected by the time people go to bed, the study found.

Middle-aged men get the least amount of sleep, less than the recommended seven to eight hours.

And age is the main factor determining amount of sleep. The research is based on data collected through the free smartphone app Entrain, launched in 2014 to help users fight jetlag.

Scientists asked some 6,000 people 15 and older to send anonymous data about sleep, wake-up and lighting environment, enabling the scientists to obtain a large amount of data about sleep patterns worldwide.

The app also asks users to input information about their ages, gender, countries and time zones. Sleep is driven by an internal "circadian" clock, a cluster of 20,000 nerve cells the size of a grain of rice located behind the eyes, and adjusted according to the amount of light captured, especially natural light.

The average amount of sleep in the world varies from a minimum of seven hours 24 minutes in Singapore and Japan to a maximum of eight hours 12 minutes in the Netherlands, the study found.

Although a difference of 48 minutes may seem inconsequential, a lack of sleep for half an hour can have significant effects on cognitive function and health, the researchers said.

People who need sleep suffer a reduction in their cognitive abilities without really being conscious of it, the new study says. "Impaired sleep presents an immediate and pressing threat to human health," it says.

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Sunday, 8 May 2016

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News Network
February 8,2020

Mangaluru, Feb 8: Professional services company Cognizant on Friday opened a new facility in Mangaluru, expanding its presence in Karnataka. Located in the heart of the city, the new 100,000 sq- ft facility can accommodate more than 1,100 employees, the NASDAQ-listed company said in a statement.

Cognizant has had an association with Mangaluru since 2011 when it acquired CoreLogic Global Services Private Limited (CoreLogic India), the India-based captive operations of CoreLogic, one of the largest real estate information and analytics provider in the US market.

From its existing centre in Mangaluru, Cognizant provides consulting, enterprise applications and business process services in the area of mortgage processing covering property taxes, research and investigations, property data warehousing and management of geospatial data.

The company currently employs more than 600 professionals in Mangaluru, more than 50 per cent of whom are women.

In addition to experienced professionals, Cognizant also hires fresh graduates for its Mangaluru centre from leading institutions such as Sahyadari Institute of Technology and Management, Manipal Institute of Technology, N.M.A.M. Institute of Technology, St Joseph's College of Engineering, Canara Engineering College, N.I.T.K. Surathkal, PA College of Engineering and Srinivas College of Engineering, as mortgage origination and servicing specialists, business analysts, consultants, automation specialists and software engineers.

In Karnataka, Cognizant also has operations in Bengaluru and Mysuru. The company has more than 28,000 professionals in Bengaluru and nearly 700 professionals in Mysuru.

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News Network
February 10,2020

Bengaluru, Feb 10: Smoke entered wards at Sagar Hospital following a short circuit in the UPS room, said the fire department here on Sunday.

"Smoke entered wards at Sagar Hospital in Bengaluru, following a short circuit in the UPS room at the hospital today. Patients have been shifted from the site of the incident, as a precaution," the fire department in Bengaluru said.

"No fire incident reported and the situation is under control now," the fire department said.

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News Network
April 2,2020

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

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