Indian public sector banks had 'worst phase' under Manmohan, Rajan: Sitharaman

New Delhi, Jun 13: About 56 per cent of children were found to have no access to smartphones which have emerged as essential tools for online learning during the coronavirus-induced lockdown, according to a new study that surveyed 42,831 students at various school levels.

The study ''Scenario amidst COVID 19 - Onground Situations and Possible Solutions'' was conducted by child rights NGO Smile Foundation with an aim of analysing the access to technology.

The findings of the study showed that 43.99 per cent of surveyed children have access to smartphones and another 43.99 per cent of students have access to basic phones while 12.02 per cent do not have access to either smartphones or basic phones.

A total of 56.01 per cent children were found to have no access to smartphones, the study said.

"Concerning television, it was noted that while 68.99 per cent have access to TV, a major chunk of 31.01 per cent does not. Hence suggesting that using smartphone interventions for enhancing learning outcomes is not the only solution," it said.

At the primary level of education (class 1 to 5) 19,576 children were surveyed while at upper primary level (class 6 to 8) 12,277 children were surveyed. At secondary level of education (class 9 to 10) 5,537 children were surveyed and at higher secondary level (class 11 to 12) 3,216 children were surveyed.

The survey based on which the study was conducted used two approaches - over the telephone wherein the NGO reached out to the children whose database it already had -- students enrolled in various education centres of the NGO -- and second was through community mobilization wherein community workers went door to door to get answers.

The survey was conducted in 23 states, including Delhi, Gujarat, Maharashtra, Karnataka, Tamil Nadu, West Bengal, Andhra Pradesh, Telangana, Uttar Pradesh, Haryana, over a period of 12 days from April 16 to April 28.

The lockdown induced by the COVID-19 pandemic in March prompted schools and colleges to move to the virtual world for teaching and learning activities. However, many experts say the digital divide in the country may turn online classes into an operational nightmare.

As per official statistics, there are over 35 crore students in the country. However, it is not clear as to how many of them have access to digital devices and Internet.

Santanu Mishra, co-founder and executive trustee, Smile Foundation, said the findings clearly show that the digital divide is a real challenge, and multiple approaches need to be implemented to cater to all across the nation.

"As an exercise before we start any programme, we do a baseline study to understand the on-ground challenges so that our programmes can bring in real work and real change. With the onset of the pandemic, following indefinite school closures, it is more important than ever to understand the situation and how can we ensure that children are given quality education. Through this, we understand that customized modules need to be built in accordance with the channel of communication," he said.  

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

New Delhi, Jan 22: Delhi Chief Minister Arvind Kejriwal has assets worth Rs 3.4 crore, an increase of Rs 1.3 crore from 2015, according to his election affidavit.

Kejriwal's total assets were worth Rs 2.1 crore in 2015.

The cash and fixed deposits of Kejriwal's wife Sunita Kejriwal increased from Rs 15 lakh in 2015 to Rs 57 lakh in 2020.

A party functionary said Rs 32 lakh worth cash and fixed deposits have been received by Sunita Kejriwal as voluntary retirement benefits while the rest are savings.

The cash and fixed deposits of the chief minister increased from Rs 2.26 lakh in 2015 to Rs 9.65 lakh in 2020.

There was no change in the value of immovable assets of his wife while Kejriwal's immovable assets' worth increased from Rs 92 lakh to Rs 177 lakh.

The party functionaries said increase in Kejriwal's immovable assets' worth is due to the increased valuation of the same asset as in 2015.