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SYDNEY — Researchers in Australia and the United States say that a new artificial intelligence tool has allowed them to classify brain tumors more quickly and accurately.
The current method for identifying different kinds of brain tumors, while accurate, can take several weeks to produce results. The method, called DNA methylation-based profiling, is not available at many hospitals around the world.
To address these challenges, a research team from the Australian National University, in collaboration with the National Cancer Institute in the United States, has developed a way to predict DNA methylation, which acts like a switch to control gene activity.
This allows them to classify brain tumors into 10 major categories using a deep learning model.
This is a branch of artificial intelligence that teaches computers to process data in a way that is inspired by a human brain.
The joint U.S.-Australian system is called DEPLOY and uses microscopic pictures of a patient’s tissue called histopathology images.
The researchers see the DEPLOY technology as complementary to an initial diagnosis by a pathologist or physician.
Danh-Tai Hoang, a research fellow at the Australian National University, told VOA that AI will enhance current diagnostic methods that can often be slow.
“The technique is very time consuming,” Hoang said. “It is often around two to three weeks to obtain a result from the test, whereas patients with high-grade brain tumors often require treatment as soon as possible because time is the goal for brain tumor(s), so they need to get treatment as soon as possible.”
The research team said its AI model was validated on large datasets of approximately 4,000 patients from across the United States and Europe and an accuracy rate of 95 percent.
Their study has been published in the journal Nature Medicine.
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Accra, Ghana — Anita Akpeere prepared fried rice in her kitchen in Ghana’s capital as a flurry of notifications for restaurant orders lit up apps on her phone. “I don’t think I could work without a phone in my line of business,” she said, as requests came in for her signature dish, a traditional fermented dumpling.
Internet-enabled phones have transformed many lives, but they can play a unique role in sub-Saharan Africa, where infrastructure and public services are among the world’s least developed, said Jenny Aker, a professor who studies the issue at Tufts University. At times, technology in Africa has leapfrogged gaps, including providing access to mobile money for people without bank accounts.
Despite growing mobile internet coverage on the continent of 1.3 billion people, just 25% of adults in sub-Saharan Africa have access to it, according to Claire Sibthorpe, head of digital inclusion at the U.K.-based mobile phone lobbying group GSMA. Expense is the main barrier. The cheapest smartphone costs up to 95% of the monthly salary for the poorest 20% of the region’s population, Sibthorpe said.
Literacy rates that are below the global average, and lack of services in many African languages — some 2,000 are spoken across the continent, according to The African Language Program at Harvard University — are other reasons why a smartphone isn’t a compelling investment for some.
“If you buy a car, it’s because you can drive it,” said Alain Capo-Chichi, chief executive of CERCO Group, a company that has developed a smartphone that functions through voice command and is available in 50 African languages such as Yoruba, Swahili and Wolof.
Even in Ghana, where the lingua franca is English, knowing how to use smartphones and apps can be a challenge for newcomers.
One new company in Ghana is trying to close the digital gap. Uniti Networks offers financing to help make smartphones more affordable and coaches users to navigate its platform of apps.
For Cyril Fianyo, a 64-year-old farmer in Ghana’s eastern Volta region, the phone has expanded his activities beyond calls and texts. Using his identity card, he registered with Uniti, putting down a deposit worth 340 Ghanaian Cedis ($25) for a smartphone and will pay the remaining 910 Cedis ($66) in installments.
He was shown how to navigate apps that interested him, including a third-party farming app called Cocoa Link that offers videos of planting techniques, weather information and details about the challenges of climate change that have affected cocoa and other crops.
Fianyo, who previously planted according to his intuition and rarely interacts with farming advisors, was optimistic that the technology would increase his yields.
“I will know the exact time to plant because of the weather forecast,” he said.
Kami Dar, chief executive of Uniti Networks, said the mobile internet could help address other challenges including accessing health care. The company has launched in five communities across Ghana with 650 participants and wants to reach 100,000 users within five years.
Aker, the scholar, noted that the potential impact of mobile phones across Africa is immense but said there is limited evidence that paid health or agriculture apps are benefiting people there. She asserted that the only beneficial impacts are reminders to take medicine or get vaccinated.
Having studied agricultural apps and their impact, she said it doesn’t seem that farmers are getting better prices or improving their income.
Capo-Chichi from CERCO Group said a dearth of useful apps and content is another reason that more people in Africa aren’t buying smartphones.
Dar said Uniti Networks learns from mistakes. In a pilot in northern Ghana designed to help cocoa farmers contribute to their pensions, there was high engagement, but farmers didn’t find the app user-friendly and needed extra coaching. After the feedback, the pension provider changed the interface to improve navigation.
Others are finding benefit with Uniti’s platform. Mawufemor Vitor, a church secretary in Hohoe, said one health app has assisted her to track her menstruation to help prevent pregnancy. And Fianyo, the farmer, has used the platform to find information on herbal medicine.
But mobile phones are no substitute for investment in public services and infrastructure, Aker said.
She also expressed concerns about the privacy of data in the hands of private technology providers and governments. With digital IDs in development in African nations such as Kenya and South Africa, this could pave the way for further abuses, Aker said.
Uniti Networks is a for-profit business, paid for each customer that signs up for paying apps. Dar asserted that he was not targeting vulnerable populations to sell them unnecessary services and said Uniti only features apps that align with its idea of impact, with a focus on health, education, finance and agriculture.
Dar said Uniti has rejected lucrative approaches from many companies including gambling firms. “Tech can be used for awful things,” he said.
He acknowledged that Uniti tracks users on the platform to provide incentives, in the form of free data, and to provide feedback to app developers. He acknowledged that users’ health and financial data could be at threat from outside attack but said Uniti has decentralized data storage in an attempt to lessen the risk.
Still, the potential to provide solutions can outweigh the risks, Aker said, noting two areas where the technology could be transformative: education and insurance.
She said mobile phones could help overcome the illiteracy that still affects 773 million people worldwide according to UNESCO. Increased access to insurance, still not widely used in parts of Africa, could provide protection to millions who face shocks on the front lines of climate change and conflict.
Back in Fianyo’s fields, his new smartphone has attracted curiosity. “This is something I would like to be part of,” said neighboring farmer Godsway Kwamigah.
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Washington — After a nearly two year hiatus, Blue Origin flew adventurers to space on Sunday including a former Air Force pilot who was denied the chance to be the United States’ first Black astronaut decades ago.
It was the first crewed launch for the enterprise owned and founded by Amazon billionaire Jeff Bezos since a rocket mishap in 2022 left rival Virgin Galactic as the sole operator in the fledgling suborbital tourism market.
Six people including the sculptor Ed Dwight, who was on track to become NASA’s first ever astronaut of color in the 1960s before being controversially spurned, launched around 09:36 am local time (1436 GMT) from the Launch Site One base in west Texas, a live feed showed.
Dwight — at 90 years, 8 months and 10 days — became the oldest person to ever go to space.
“This is a life-changing experience, everybody needs to do this,” he exclaimed after the flight.
Dwight added: “I thought I didn’t really need this in my life,” reflecting on his omission from the astronaut corps, which was his first experience with failure as a young man. “But I lied,” he said with a hearty laugh.
Mission NS-25 is the seventh human flight for Blue Origin, which sees short jaunts on the New Shepard suborbital vehicle as a stepping stone to greater ambitions, including the development of a full-fledged heavy rocket and lunar lander.
To date, the company has flown 31 people aboard New Shepard — a small, fully reusable rocket system named after Alan Shepard, the first American in space.
The program encountered a setback when a New Shepard rocket caught fire shortly after launch on September 12, 2022, even though the uncrewed capsule ejected safely.
A federal investigation revealed an overheating engine nozzle was at fault. Blue Origin took corrective steps and carried out a successful uncrewed launch in December 2023, paving the way for Sunday’s mission.
After liftoff, the sleek and roomy capsule separated from the booster, which produces zero carbon emissions. The rocket performed a precision vertical landing.
As the spaceship soared beyond the Karman Line, the internationally recognized boundary of space 100 kilometers above sea level, passengers had the chance to marvel at the Earth’s curvature and unbuckle their seatbelts to float — or somersault — during a few minutes of weightlessness.
The capsule then reentered the atmosphere, deploying its parachutes for a desert landing in a puff of sand. However, one of the three parachutes failed to fully inflate, possibly resulting in a harder landing than expected.
Bezos himself was on the program’s first ever crewed flight in 2021. A few months later, Star Trek’s William Shatner blurred the lines between science fiction and reality when he became the world’s oldest ever astronaut aged 90, decades after he first played a space traveler.
Dwight, who was almost two months older than Shatner at the time of his flight, became only the second nonagenarian to venture beyond Earth.
Astronaut John Glenn remains the oldest to orbit the planet, a feat he achieved in 1998 at the age 77 aboard the Space Shuttle Discovery.
Blue Origin’s competitor in suborbital space is Virgin Galactic, which deploys a supersonic spaceplane that is dropped from beneath the wings of a massive carrier plane at high altitude.
Virgin Galactic experienced its own two-year safety pause because of an anomaly linked with the 2021 flight that carried its founder British tycoon Richard Branson into space. But the company later hit its stride with half a dozen successful flights in quick succession.
Sunday’s mission finally gave Dwight the chance he was denied decades ago.
He was an elite test pilot when he was appointed by President John F Kennedy to join a highly competitive Air Force program known as a pathway for the astronaut corps, but was ultimately not picked.
He left the military in 1966, citing the strain of racial politics, before dedicating his life to telling Black history through sculpture. His art, displayed around the country, includes iconic figures like Martin Luther King Jr, Frederick Douglass, Harriet Tubman and more.
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DENPASAR, BALI, INDONESIA — Elon Musk and Indonesian Health Minister Budi Gunadi Sadikin launched SpaceX’s satellite internet service for the nation’s health sector on Sunday, aiming to improve access in remote parts of the sprawling archipelago.
Musk, the billionaire head of SpaceX and Tesla TSLA.O, arrived on the Indonesian resort island of Bali by private jet before attending the launch ceremony at a community health centre in the provincial capital, Denpasar.
Musk, wearing a green batik shirt, said the availability of the Starlink service in Indonesia would help millions in far-flung parts of the country to access the internet. The country is home to more than 270 million people and three different time zones.
“I’m very excited to bring connectivity to places that have low connectivity,” Musk said, “If you have access to the internet you can learn anything.”
Starlink was launched at three Indonesian health centers on Sunday, including two in Bali and one on the remote island of Aru in Maluku.
A video presentation screened at the launch showed how high internet speeds enabled the real-time input of data to better tackle health challenges such as stunting and malnutrition.
Asked about whether he planned to also invest in Indonesia’s electric vehicle industry, Musk said he was focused on Starlink first.
“We are focusing this event on Starlink and the benefits that connectivity brings to remote islands,” he said, “I think it’s really to emphasize the importance of internet connectivity, how much of that can be a lifesaver.”
Indonesia’s government has been trying for years to lure Musk’s auto firm Tesla to build manufacturing plants related to electric vehicles as the government wants to develop its EV sector using the country’s rich nickel resources.
The tech tycoon is scheduled to meet Indonesian President Joko Widodo on Monday, where he will also address the World Water Forum taking place on the island.
Communications Minister Budi Arie Setiadi, who also attended the Bali launch, said Starlink was now available commercially, but the government would focus its services first for outer and underdeveloped regions.
Prior to Sunday’s launch, Starlink obtained a permit to operate as an internet service provider for retail consumers and had been given the go-ahead to provide networks, having received a very small aperture terminal (VSAT) permit, Budi Setiadi told Reuters.
SpaceX’s Starlink, which owns around 60% of the roughly 7,500 satellites orbiting earth, is dominant in the satellite internet sphere.
Indonesia is the third country in Southeast Asia where Starlink will operate. Malaysia issued the firm a license to provide internet services last year and a Philippine-based firm signed a deal with SpaceX in 2022.
Starlink is also used extensively in Ukraine, where it is employed by the military, hospitals, businesses and aid organizations.
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