Car windshield wipers may help prevent flooding: Study

Agencies
January 21, 2019

Washington, Jan 21: Tracking windshield wiper activity can provide faster, more accurate rainfall data than radar and rain gauge systems currently in place, potentially helping predict and prevent flooding, according to a study.

Researchers at the University of Michigan in the US said that a community armed with that real-time data could move more quickly to prevent flash-flooding or sewage overflows, which represent a rising threat to property, infrastructure and the environment.

Coupled with "smart" storm-water systems -- infrastructure outfitted with autonomous sensors and valves -- municipalities could potentially take in data from connected vehicles to predict and prevent flooding, according to the study published in the journal Scientific Reports.

"These vehicles offer us a way to get rainfall information at resolutions we had not seen before," said Branko Kerkez, an assistant professor at the University of Michigan.

"It is more precise than radar, and allows us fill gaps left by existing rain gauge networks," Kerkez said.

Our best warnings for flood conditions come from the combination of radar tracking from satellites and rain gauges spread over a wide geographic area.

Both have poor spatial resolution, meaning they lack the ability to capture what is happening at street-level, researchers said.

"Radar has a spatial resolution of a quarter of a mile and a temporal resolution of 15 minutes," said Ram Vasudevan, an assistant professor at the University of Michigan.

"Wipers, in contrast, have a spatial resolution of a few feet and a temporal resolution of a few seconds which can make a huge difference when it comes to predicting flash flooding," Vasudevan said.

He said because of the sparseness of radar and rain gauge data, we do not have enough information about where rain is occurring or when it is occurring to reduce the consequences of flooding.

"If you have fine-grain predictions of where flooding occurs, you can control water networks efficiently and effectively to prevent all sorts of dangerous chemicals from appearing inside our water supply due to runoff," Vasudevan said.

Researchers said creating a blanket system of sensors across a city for street-level data on rain events would be costly.

By utilising connected vehicles, they are tapping a resource already in place now that will only grow larger in the future.

Researchers collected data from a set of 70 cars outfitted with sensors embedded in windshield wipers and dashboard cameras.

Kerkez and Vasudevan said their research represents a first step in creating a smart infrastructure system that is fed by and responds to data as it is collected from vehicles on the road.

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Agencies
June 19,2020

Denser places, assumed by many to be more conducive to the spread of the coronavirus that causes COVID-19, are not linked to higher infection rates, say researchers.

The study, led by Johns Hopkins University, published in the Journal of the American Planning Association, also found that dense areas were associated with lower COVID-19 death rates.

"These findings suggest that urban planners should continue to practice and advocate for compact places rather than sprawling ones, due to the myriad well-established benefits of the former, including health benefits," says study lead author Shima Hamidi from Johns Hopkins Bloomberg School of Public Health in the US.

For their analysis, the researchers examined SARS-CoV-2 infection rates and COVID-19 death rates in 913 metropolitan counties in the US.

When other factors such as race and education were taken into account, the authors found that county density was not significantly associated with county infection rate.

The findings also showed that denser counties, as compared to more sprawling ones, tended to have lower death rates--possibly because they enjoyed a higher level of development including better health care systems.

On the other hand, the research found that higher coronavirus infection and COVID-19 mortality rates in counties are more related to the larger context of metropolitan size in which counties are located.

Large metropolitan areas with a higher number of counties tightly linked together through economic, social, and commuting relationships are the most vulnerable to the pandemic outbreaks.

According to the researchers, recent polls suggest that many US citizens now consider an exodus from big cities likely, possibly due to the belief that more density equals more infection risk.

Some government officials have posited that urban density is linked to the transmissibility of the virus.

"The fact that density is unrelated to confirmed virus infection rates and inversely related to confirmed COVID-19 death rates is important, unexpected, and profound," said Hamidi.

"It counters a narrative that, absent data and analysis, would challenge the foundation of modern cities and could lead to a population shift from urban centres to suburban and exurban areas," Hamidi added.

The analysis found that after controlling for factors such as metropolitan size, education, race, and age, doubling the activity density was associated with an 11.3 per cent lower death rate.

The authors said that this is possibly due to faster and more widespread adoption of social distancing practices and better quality of health care in areas of denser population.

The researchers concluded that a higher county population, a higher proportion of people age 60 and up, a lower proportion of college-educated people, and a higher proportion of African Americans were all associated with a greater infection rate and mortality rate.

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Agencies
July 13,2020

New Delhi, Jul 13: The Telecom Regulatory Authority of India (TRAI) has blocked Bharti Airtel's Platinum and Vodafone Idea's RedX premium plans that offer faster data speeds and priority services to customers as both the plans were violating net neutrality norms.

The telecom watchdog has asked Bharti Airtel to explain within seven days how such a similar plan being launched does not violate the rules of net neutrality.

Vodafone Idea's RedX plan has been in the market since November 2019. They made some modifications in May 2020 and the Bharti Airtel was soon going to launch a similar plan.

According to TRAI, the higher speed for premium customers discriminate against others and violates net neutrality.

Responding to TRAI's move, Airtel spokesperson said: "We are passionate about delivering the best network and service experience to all our customers. This is why we have a relentless obsession to eliminate faults and have been consistently recognised by international agencies as the best network in terms of speed, latency and video experience."

"At the same time, we want to keep raising the bar for our post-paid customers in terms of service and responsiveness. This is an ongoing effort at our end," the spokesperson said.

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Agencies
March 18,2020

Thiruvananthapuram, Mar 18: To raise awareness about protective measures against coronavirus, Kerala Police released a dance video on the State Police Media Centre's Facebook page promoting the washing of hands, here on Tuesday.

In the video, the police officers were seen dancing to the tunes of Kalakkatha from the Malayalam action-drama thriller Ayyappanum Koshiyum while demonstrating the right technique for washing hands.

The video gained over 27,000 likes and over 2,400 comments and more than 33,000 netizens shared the video.

The video has received a positive response with users congratulating Kerala Police for the initiative.

"Congrats Kerala police media for this kind of initiative," one user commented on Facebook. Another user thanked the police in the comments section saying, "Super super thanks to KL (Kerala) police."

The number of people who have tested positive for the coronavirus in Kerala is 25.

The total number of confirmed COVID-19 cases in India has reached 147, including 122 Indians and 25 foreign nationals, said the Ministry of Health and Family Welfare earlier today.

Globally, the virus has infected more than 184,000 people and killed more than 7500, as per the data available on the World Health Organisation website.

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