Thursday, July 13, 2023

 Friday, 14 July 2023 – SHARK AWARENESS DAY

Discover white sharks and more in 3D! Cutting-edge, interactive shark and ray displays bring the ocean to life


New interactive models on the Save Our Seas Foundation’s (SOSF’s) World of Sharks website, and for the SOSF Shark Education Centre’s technology for young learners, bring to life the evolution and adaptions of sharks and rays – in 3D!

Business Announcement

SAVE OUR SEAS FOUNDATION

GW PR image 2 

IMAGE: THE ADVANCED TECHNIQUES USED TO RENDER THE MODEL SHARKS ENSURE THEY ARE NOT ONLY TRUE TO FORM BUT ALSO REPRESENT GENUINE MOVEMENT IN THE ANIMATIONS. view more 

CREDIT: PHOTO: BYRON DILKES RENDERED IMAGE: DIGITAL LIFE PROJECT AT THE UNIVERSITY OF MASSACHUSETTS AMHERST USA



For release on Friday, 14 July 2023 – SHARK AWARENESS DAY

Have you ever wondered how many kinds of sharks there are? Which is the biggest shark or the fastest? For these answers and lots more, the Save Our Seas Foundation’s (SOSF’s) World of Sharks website is the one-stop shop for shark information. Designed to provide scientifically accurate information in an engaging format, World of Sharks is where you can find infographics, podcast episodes, species cards and topic pages covering everything you’ve ever wanted to know about sharks and rays.

“We wanted World of Sharks to be the ultimate shark FAQ – created to answer all the questions people want to ask about sharks and rays,” says SOSF CEO Dr James Lea. “Through engaging and accessible content, we hope to grow a repository of fascinating shark facts that people can trust.”

And now, with this latest addition, the website will host interactive 3D white shark and manta ray models designed by the Digital Life Project at the University of Massachusetts (UMASS) in collaboration with the SOSF.

“I was really wanting to create something 3D and interactive, where visitors to the World of Sharks can explore in an engaging way that highlights the unique physiology and evolution of sharks and rays and demystifies their unique adaptations,” explains Jade Schultz, content manager for the SOSF. 

The Digital Life team, led by Professor Duncan Irschick, in collaboration with CG artist Johnson Martin and UMASS Amherst undergraduates Emma Hsiao and Braedon Fedderson, used media provided by the SOSF and data and open-access images to reconstruct these 3D shark species.

The interactive biology models enable website users to learn about different elements of shark and ray physiology. For instance, just allowing the cursor to hover over key features will bring up information on everything from how manta rays filter feed and why they are under threat to facts about how scientists use sharks’ dorsal fins to identify individuals in a population. The 3D models are open access, and free to view and download for non-profit use

Although concerted efforts by researchers and educators are turning the tide for sharks and rays, significant challenges remain. More than one-third of these species are under threat of extinction, which means we still have much work to do to change misconceptions, banish misinformation and empower people with useful information so that they can also participate in conservation. 

“The key to all our understanding of sharks – why they do what they do and what is needed to help them recover – relies on there being a foundation of basic, reliable life history information,” says Dr Lea.

The SOSF has a strong legacy of using communication and storytelling to do this, but this most recent commission with innovators from UMASS harnesses the power of creative design and technological advancement. The World of Sharks makes the reach for this kind of information global, but the SOSF is also excited to present very detailed and accurate information at the local scale.

Young visitors to the SOSF Shark Education Centre (SOSF-SEC) in Cape Town, South Africa, have an incredible opportunity to explore the rocky shores nearby in the Dalebrook marine protected area. This kind of in-person experience is irreplaceable, but to dive deeper into the reaches offshore requires technological wizardry and creative flair. A new website for the SOSF-SEC will host a diversity of 3D sharks that are found in False Bay, the largest bay in southern Africa. Children who would never otherwise dip below the waves to see these sharks will now be able to watch, for example, an endemic (found nowhere else in the world) catshark curl into a defensive doughnut-shape. Whether on iPads in the centre or at home online, learners can marvel at the most amazing feats of the sharks that live on their doorstep. Simulating behaviours like spyhopping in white sharks and demonstrating how sharks move in their environment give children an immersive experience, regardless of whether they have access to the ocean.

Still in the throes of the brainstorming and development that will expand these tools to their full potential, the director of the SOSF-SEC, Dr Clova Mabin, enthuses, “We also think that it might be possible to use the tools as a teaching aid in the classroom, to simulate field work. Learners could view them on the iPads and potentially take various measurements, comparing them across the different species.”


Sharks have special pores in their skin, known as the Ampullae of Lorenzini - that allows them to detect electrical signals. Each pore is filled with a highly conductive gel, which carries weak electrical signals from the surrounding seawater to a receptor cell.

CREDIT

Photo © Byron Dilkes

Discover great white sharks an [VIDEO] | 

Detecting spoiled food with LEDs


Perovskite-modified LEDs reveal rot in fruit and veg before it is visible

Peer-Reviewed Publication

WILEY



A team of researchers has developed new LEDs which emit light simultaneously in two different wavelength ranges, for a simpler and more comprehensive way to monitor the freshness of fruit and vegetables. As the team write in the journal Angewandte Chemie, modifying the LEDs with perovskite materials causes them to emit in both the near-infrared range and the visible range, a significant development in the contact-free monitoring of food.

Perovskite crystals are able to capture and convert light. Being simple to produce and highly efficient, perovskites are already used in solar cells but are also being intensively researched for suitability in other technologies. Angshuman Nag and his team at the Indian Institute of Science Education and Research (IISER) in Pune, India, are now proposing a perovskite application in LED technology that could simplify the quality control of fresh fruit and vegetables.

Without light converters, LEDs would emit light in rather narrow light bands. To cover the whole range of white light produced by the sun, the diodes in “phosphor-converted” (pc) LEDs are coated with luminescent substances. Nag and his team have used a double emission coating with the purpose to produce pc-LEDs that emit both white (“normal”) light and also a strong band in the near-infrared range (NIR).

To make the dual-emission pc-LED, they applied a double perovskite doped with bismuth and chromium. Part of the bismuth component emits warm white light and another part transfers energy to the chromium component, de-exciting it and causing an additional emission in the NIR range, the researchers found out.

NIR is already used in the food industry to examine freshness in fruit and vegetables. Nag and PhD student Sajid Saikia, first author of the paper, explain their idea: "Food contains water, which absorbs the broad near-infrared emission at around 1000 nm. The more water that is present [due to rotting], the greater the absorption of near-infrared radiation, yielding darker contrast in an image taken under near-infrared radiation. This easy, non-invasive imaging process can estimate the water content in different parts of food, assessing its freshness."

Using these modified pc-LEDs to examine apples or strawberries, the team observed dark spots that were not visible in standard camera images. Illuminating the food with both white and NIR light revealed normal coloring that could be seen by the naked eye, as well as those parts which were starting to rot, but not yet visibly so.

Saikia and Nag envision a compact device for simultaneous visual and NIR food inspection, although the two detectors, one for visible light and one for NIR light, could make such an instrument costly for common applications. On the other hand, the researchers emphasize that the pc LEDs are easy to produce without any chemical waste or solvents and short-term costs could be more than recovered by the long service life and scalability of this novel dual-emitting pc-LED device.

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About the Author

Angshuman Nag is an Associate Professor of Chemistry at IISER Pune, India. His group develops novel semiconductors with favorable optoelectronic properties such as defect-free nanocrystals, lead-free metal halide perovskites, semiconductors with luminescent, plasmonic, and magnetic properties, and surface-engineered nanocrystals.

Analogous to algae: scientists move toward engineering living matter by manipulating movement of microparticles


Breakthrough uses lasers to mimic biological and meteorological systems


Peer-Reviewed Publication

NEW YORK UNIVERSITY

Orbiting particle spun by a rotating light beam 

IMAGE: AI IMPRESSION OF ORBITING PARTICLE SPUN BY A ROTATING LIGHT BEAM. view more 

CREDIT: MATAN YAH BEN ZION



A team of scientists has devised a system that replicates the movement of naturally occurring phenomena, such as hurricanes and algae, using laser beams and the spinning of microscopic rotors. 

The breakthrough, reported in the journal Nature Communications, reveals new ways that living matter can be reproduced on a cellular scale.

“Living organisms are made of materials that actively pump energy through their molecules, which produce a range of movements on a larger cellular scale,” explains Matan Yah Ben Zion, a doctoral student in New York University’s Department of Physics at the time of the work and one of the paper’s authors. “By engineering cellular-scale machines from the ground up, our work can offer new insights into the complexity of the natural world.”  

The research centers on vortical flows, which appear in both biological and meteorological systems, such as algae or hurricanes. Specifically, particles move into orbital motion in the flow generated by their own rotation, resulting in a range of complex interactions. 

To better understand these dynamics, the paper’s authors, who also included Alvin Modin, an NYU undergraduate at the time of the study and now a doctoral student at Johns Hopkins University, and Paul Chaikin, an NYU physics professor, sought to replicate them at their most basic level. To do so, they created tiny micro-rotors—about 1/10th the width of a strand of human hair—to move micro-particles using a laser beam (Chaikin and his colleagues devised this process in a previous work).

The researchers found that the rotating particles mutually affected each other into orbital motion, with striking similarities to dynamics observed by other scientists in “dancing” algae—algae groupings that move in concert with each other. 

In addition, the NYU team found that the spins of the particles reciprocate as the particles orbit. 

“The spins of the synthetic particles reciprocate in the same fashion as that observed in algae—in contrast to previous work with artificial micro-rotors,” explains Ben Zion, now a researcher at Tel Aviv University. “So we were able to reproduce synthetically—and on the micron scale—an effect that is seen in living systems.”

“Collectively, these findings suggest that the dance of algae can be reproduced in a synthetic system, better establishing our understanding of living matter,” he adds.

The research was supported by grants from the Department of Energy (DE-SC0007991, SC0020976). 


DOI: 10.6084/m9.figshare.22294690

AI

How an “AI-tocracy” emerges

In China, the use of AI-driven facial recognition helps the regime repress dissent while enhancing the technology, researchers report

Peer-Reviewed Publication

MASSACHUSETTS INSTITUTE OF TECHNOLOGY



CAMBRIDGE, MA -- Many scholars, analysts, and other observers have suggested that resistance to innovation is an Achilles’ heel of authoritarian regimes. Such governments can fail to keep up with technological changes that help their opponents; they may also, by stifling rights, inhibit innovative economic activity and weaken the long-term condition of the country. 

But a new study co-led by an MIT professor suggests something quite different. In China, the research finds, the government has increasingly deployed AI-driven facial-recognition technology to suppress dissent; has been successful at limiting protest; and in the process, has spurred the development of better AI-based facial-recognition tools and other forms of software.

“What we found is that in regions of China where there is more unrest, that leads to greater government procurement of facial-recognition AI, subsequently, by local government units such as municipal police departments,” says MIT economist Martin Beraja, who is co-author of a new paper detailing the findings. 

What follows, as the paper notes, is that “AI innovation entrenches the regime, and the regime’s investment in AI for political control stimulates further frontier innovation.”

The scholars call this state of affairs an “AI-tocracy,” describing the connected cycle in which increased deployment of the AI-driven technology quells dissent while also boosting the country’s innovation capacity.

The open-access paper, also called “AI-tocracy,” appears in the August issue of the Quarterly Journal of Economics. An abstract of the uncorrected proof was first posted online in March. The co-authors are Beraja, who is the Pentti Kouri Career Development Associate Professor of Economics at MIT; Andrew Kao, a doctoral candidate in economics at Harvard University; David Yang, a professor of economics at Harvard; and Noam Yuchtman, a professor of management at the London School of Economics. 

To conduct the study, the scholars drew on multiple kinds of evidence spanning much of the last decade. To catalogue instances of political unrest in China, they used data from the Global Database of Events, Language, and Tone (GDELT) Project, which records news feeds globally. The team turned up 9,267 incidents of unrest between 2014 and 2020. 

The researchers then examined records of almost 3 million procurementcontracts issued by the Chinese government between 2013 and 2019, from a database maintained by China’s Ministry of Finance. They found that local governments’ procurement of facial-recognition AI services and complementary public security tools — high-resolution video cameras — jumped significantly in the quarter following an episode of public unrest in that area.

Given that Chinese government officials were clearly responding to public dissent activities by ramping up on facial-recognition technology, the researchers then examined a follow-up question: Did this approach work to suppress dissent?

The scholars believe that it did, although as they note in the paper, they “cannot directly estimate the effect” of the technology on political unrest. But as one way of getting at that question, they studied the relationship between weather and political unrest in different areas of China. Certain weather conditions are conducive to political unrest. But in prefectures in China that had already invested heavily in facial-recognition technology, such weather conditions are less conducive to unrest compared to prefectures that had not made the same investments. 

In so doing, the researchers also accounted for issues such as whether or not greater relative wealth levels in some areas might have produced larger investments in AI-driven technologies regardless of protest patterns. However, the scholars still reached the same conclusion: Facial-recognition technology was being deployed in response to past protests, and then reducing further protest levels. 

“It suggests that the technology is effective in chilling unrest,” Beraja says. 

Finally, the research team studied the effects of increased AI demand on China’s technology sector and found the government’s greater use of facial-recognition tools appears to be driving the country’s tech sector forward. For instance, firms that are granted procurement contracts for facial-recognition technologies subsequently produce about 49 percent more software products in the two years after gaining the government contract than they had beforehand. 

“We examine if this leads to greater innovation by facial-recognition AI firms, and indeed it does,” Beraja says.

Such data — from China’s Ministry of Industry and Information Technology — also indicates that AI-driven tools are not necessarily “crowding out” other kinds of high-tech innovation.

Adding it all up, the case of China indicates how autocratic governments can potentially reach a near-equilibrium state in which their political power is enhanced, rather than upended, when they harness technological advances.

“In this age of AI, when the technologies not only generate growth but are also technologies of repression, they can be very useful” to authoritarian regimes, Beraja says. 

The finding also bears on larger questions about forms of government and economic growth. A significant body of scholarly research shows that rights-granting democratic institutions do generate greater economic growth over time, in part by creating better conditions for technological innovation. Beraja notes that the current study does not contradict those earlier findings, but in examining the effects of AI in use, it does identify one avenue through which authoritarian governments can generate more growth than they otherwise would have. 

“This may lead to cases where more autocratic institutions develop side by side with growth,” Beraja adds. 

Other experts in the societal applications of AI say the paper makes a valuable contribution to the field. 

“This is an excellent and important paper that improves our understanding of the interaction between technology, economic success, and political power,” says Avi Goldfarb, the Rotman Chair in Artificial Intelligence and Healthcare and a professor of marketing at the Rotman School of Management at the University of Toronto. “The paper documents a positive feedback loop between the use of AI facial-recognition technology to monitor suppress local unrest in China and the development and training of AI models. This paper is pioneering research in AI and political economy. As AI diffuses, I expect this research area to grow in importance.”

For their part, the scholars are continuing to work on related aspects of this issue. One forthcoming paper of theirs examines the extent to which China is exporting advanced facial-recognition technologies around the world — highlighting a mechanism through which government repression could grow globally.

###    

Support for the research was provided in part by the U.S. National Science Foundation Graduate Research Fellowship Program; the Harvard Data Science Initiative; and the British Academy’s Global Professorships program.

 

 

Could AI-powered robot “companions” combat human loneliness?


Companion robots may help socially isolated people avoid the health risks of being alone

Peer-Reviewed Publication

DUKE UNIVERSITY

AUKLAND, NZ and DURHAM, N.C. – Companion robots enhanced with artificial intelligence may one day help alleviate the loneliness epidemic, suggests a new report from researchers at Auckland, Duke, and Cornell Universities.

Their report, appearing in the July 12 issue of Science Robotics, maps some of the ethical considerations for governments, policy makers, technologists, and clinicians, and urges stakeholders to come together to rapidly develop guidelines for trust, agency, engagement, and real-world efficacy.

It also proposes a new way to measure whether a companion robot is helping someone.

“Right now, all the evidence points to having a real friend as the best solution,” said Murali Doraiswamy, MBBS, FRCP, professor of Psychiatry and Geriatrics at Duke University and member of the Duke Institute for Brain Sciences. “But until society prioritizes social connectedness and eldercare, robots are a solution for the millions of isolated people who have no other solutions.”

The number of Americans with no close friends has quadrupled since 1990, according to the Survey Center on American Life. Increased loneliness and social isolation may affect a third of the world population, and come with serious health consequences, such as increased risk for mental illness, obesity, dementia, and early death. Loneliness may even be as pernicious a health factor as smoking cigarettes, according to the U.S. Surgeon General Vivek H. Murthy, M.D.

While it is increasingly difficult to make new friends as an adult to help offset loneliness, making a companion robot to support socially isolated older adults may prove to be a promising solution.

“AI presents exciting opportunities to give companion robots greater skills to build social connection,” said Elizabeth Broadbent, Ph.D., professor of Psychological Medicine at Waipapa Taumata Rau, University of Auckland. “But we need to be careful to build in rules to ensure they are moral and trustworthy.”

Social robots like the ElliQ have had thousands of interactions with human users, nearly half related to simple companionship, including company over a cup of tea or coffee. A growing body of research on companion robots suggests they can reduce stress and loneliness and can help older people remain healthy and active in their homes.

Newer robots embedded with advanced AI programs may foster stronger social connections with humans than earlier generations of robots. Generative AI like ChatGPT, which is based on large language models, allows robots to engage in more spontaneous conversations, and even mimic the voices of old friends and loved ones who have passed away.

Doctors are mostly on board, too, the authors point out. A Sermo survey of 307 care providers across Europe and the United States showed that 69% of physicians agreed that social robots could provide companionship, relieve isolation, and potentially improve patients’ mental health. Seventy percent of doctors also felt insurance companies should cover the cost of companion robots if they prove to be effective friendship supplement. How to measure a robot’s impact, though, remains tricky.

This lack of measurability highlights the need to develop patient-rated outcome measures, such as the one being developed by the authors. The “Companion Robot Impact Scale” (Co-Bot-I-7) aims to establish the impact on physical health and loneliness, and is showing that companion machines might already be proving effective.

Early results from Broadbent’s lab, for example, find that amiable androids help reduce stress and even promote skin healing after a minor wound.

“With the right ethical guidelines,” the authors conclude in their report, “we may be able to build on current work to use robots to create a healthier society.”

In addition to Dr. Doraiswamy and Professor Broadbent, study authors include Mark Billinghurst, Ph.D., and Samantha Boardman, M.D.

Professor Broadbent and Dr. Doraiswamy have served as advisors to Sermo and technology companies. Dr. Doraiswamy, Professor Broadbent, and Dr. Boardman are co-developers of the Co-Bot-I-7 scale.

CITATION: “Enhancing Social Connectedness With Companion Robots Employing AI,” Elizabeth Broadbent, Mark Billinghurst, Samantha G. Boardman, P. Murali Doraiswamy. Science Robotics, July 12, 2023. DOI: 10.1126/scirobotics.adi6347