Category Archives: Healthcare

Updates from Georgia Tech

Diversity May Be Key to Reducing Errors in Quantum Computing
By John Toon – In quantum computing, as in team building, a little diversity can help get the job done better, computer scientists have discovered.

Unlike conventional computers, the processing in quantum-based machines is noisy, which produces error rates dramatically higher than those of silicon-based computers. So quantum operations are repeated thousands of times to make the correct answer stands out statistically from all the wrong ones.

But running the same operation over and over again on the same qubit set may just generate the same incorrect answers that can appear statistically to be the correct answer. The solution, according to researchers at the Georgia institute of Technology, is to repeat the operation on different qubit sets that have different error signatures – and therefore won’t produce the same correlated errors.

“The idea here is to generate a diversity of errors so you are not seeing the same error again and again,” said Moinuddin Qureshi, a professor in Georgia Tech’s School of Electrical and Computer Engineering, who worked out the technique with his senior Ph.D. student, Swamit Tannu. “Different qubits tend to have different error signatures. When you combine the results from diverse sets, the right answer appears even though each of them individually did not get the right answer,” said Tannu. more>

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Updates from ITU

Meet your virtual avatar: the future of personalized healthcare
ITU News – Tingly? Sharp? Electric? Dull? Pulsing?

Trying to describe a pain you feel to your doctor can be a difficult task. But soon, you won’t have to: a computer avatar is expected to tell your doctor everything they need to know.

The CompBioMed Centre of Excellence, an international consortium of universities and industries, is developing a program that creates a hyper-personalized avatar or ‘virtual human’ using a supercomputer-generated simulation of an individual’s physical and biomedical information for clinical diagnostics.

There is a rapid and growing need for this kind of technology-enabled healthcare. 12 million people who seek outpatient medical care in the U.S. experience some form of diagnostic error. Additionally, the World Health Organization estimates that there will be a global shortage of 12.9 million healthcare workers by 2035.

Greater access to technology-enabled healthcare will allow doctors to make better and faster diagnoses – and provide the tools to collect the necessary data.

The Virtual Human project combines different kinds of patient data that are routinely generated as part of the current healthcare system, such as x-rays, CAT scans or MRIs to create a personalized virtual avatar. more>

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Updates from Georgia Tech

Tiny Vibration-Powered Robots Are the Size of the World’s Smallest Ant
By John Toon – Researchers have created a new type of tiny 3D-printed robot that moves by harnessing vibration from piezoelectric actuators, ultrasound sources or even tiny speakers. Swarms of these “micro-bristle-bots” might work together to sense environmental changes, move materials – or perhaps one day repair injuries inside the human body.

The prototype robots respond to different vibration frequencies depending on their configurations, allowing researchers to control individual bots by adjusting the vibration. Approximately two millimeters long – about the size of the world’s smallest ant – the bots can cover four times their own length in a second despite the physical limitations of their small size.

“We are working to make the technology robust, and we have a lot of potential applications in mind,” said Azadeh Ansari, an assistant professor in the School of Electrical and Computer Engineering at the Georgia Institute of Technology. “We are working at the intersection of mechanics, electronics, biology and physics. It’s a very rich area and there’s a lot of room for multidisciplinary concepts.”

A paper describing the micro-bristle-bots has been accepted for publication in the Journal of Micromechanics and Microengineering. The research was supported by a seed grant from Georgia Tech’s Institute for Electronics and Nanotechnology. In addition to Ansari, the research team includes George W. Woodruff School of Mechanical Engineering Associate Professor Jun Ueda and graduate students DeaGyu Kim and Zhijian (Chris) Hao. more>

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Updates from ITU

If we want to solve climate change, water governance is our blueprint
By Elizabeth Taylor – The phrase “fail to prepare or prepare to fail” comes to mind as we enter an era in which governments and communities must band together to mitigate climate change. Part of what makes our next steps so uncertain is knowing we must work together in ways that we have – so far – failed to do. We either stall, or offer up “too little, too late” strategies.

These strategies include cap-and-trade economic incentive programs, like the Kyoto Protocol and other international treaties. Insightful leaders have drawn attention to the issue, but lukewarm political will means that they are only able to defer greenhouse gas emissions-reduction targets in the future. A global crisis demands global commitment. How can we work together to face a universal threat? What of the complex challenges that demand unified monitoring and responses?

One principal impediment is the lack of coherent technical infrastructure.

Currently, our arsenal for facilitating collective action is understocked. Our policies are unable to invoke tide-turning change because they lack a cohesive infrastructure. In the absence of satisfactory tools to make them happen, our policies and pledges become feelgood initiatives rather than reaching full effectiveness.

What tools might lead us to act collectively against climate change? It’s easy to focus on the enormous scale of global cooperation needed, or the up-front investments it will take to mitigate the crisis. But as the writer E.L. Doctorow reminded us, we can’t be intimidated by the process: “Writing a novel is like driving a car at night,” he said. “You can see only as far as your headlights, but you can make the whole trip that way.”

We don’t have to possess all the answers as we set out to save our communities. We don’t have to know exactly what we will meet along the way. At a minimum, we must only understand how to use our headlights to see the first few feet ahead of us.

So what is the first step on our path?

It is the substance that underpins our industry, health and survival. It remains a central source of conflict around the world, yet it also creates partnerships. Our first step is water.

Water challenges us with issues of scarcity, quality and distribution. It may seem to be a local issue, but combined with local tensions and a globalized economy, water governance is set to become one of our greatest tests of diplomatic finesse and technological synergy.

If we can properly align local and global water governance and management, we can prepare the tools, the organizational blueprint and the political momentum needed to solve climate change. more>

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Updates from ITU

How AI can improve agriculture for better food security
ITU News – Roughly half of the 821 million people considered hungry by the United Nations are those who dedicate their lives to producing food for others: farmers.

This is largely attributed to the vulnerability of farmers to agricultural risks, such as extreme weather, conflict, and market shocks.

Smallholder farmers, who produce some 60-70% of the world’s food, are particularly vulnerable to risks and food insecurity.

Emerging technologies such as Artificial Intelligence (AI), however, have been particularly promising in tackling challenges such as lack of expertise, climate change, resource optimization and consumer trust.

AI assistance can, for instance, enable smallholder farmers in Africa to more effectively address scourges such as viruses and the fall armyworm that have plagued the region over the last 40 years despite extensive investment, said David Hughes, Co-Founder of PlantVillage and Assistant Professor at Penn State University at a session on AI for Agriculture at last week’s AI for Good Global Summit. more>

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Nuclear Weapons Are Getting Less Predictable, and More Dangerous

By Patrick Tucker – On Tuesday, U.S. Secretary of State Mike Pompeo met his counterpart, Russian Foreign Minister Sergey Lavrov, to discuss, among many things, the prospect of a new, comprehensive nuclear-weapons treaty with Russia and China.

At the same time, the Pentagon is developing a new generation of nuclear weapons to keep up with cutting-edge missiles and warheads coming out of Moscow. If the administration fails in its ambitious renegotiation, the world is headed toward a new era of heightened nuclear tension not seen in decades.

That’s because these new weapons are eroding the idea of nuclear predictability.

Since the dawn of the nuclear era, the concept of the nuclear triad — bombers, submarines, and intercontinental ballistic missiles — created a shared set of expectations around what the start of a nuclear war would look like.

If you were in NORAD’s Cheyenne Mountain Complex in Colorado and you saw ICBMs headed toward the United States, you knew that a nuclear first strike was underway. The Soviets had a similar set of expectations, and this shared understanding created the delicate balance of deterrence — a balance that is becoming unsettled.

Start with Russia’s plans for new, more-maneuverable ICBMs. Such weapons have loosely been dubbed “hypersonic weapons” — something of a misnomer because all intercontinental ballistic missiles travel at hypersonic speeds of five or more times the speed of sound — and they create new problems for America’s defenders.

“As I stand here today, I don’t know what that solution set looks like,” Gen. Paul Selva, the Vice Chairman of the Joint Chiefs of Staff, said at an Air Force Association event in April. “If you’re going Mach 13 at the very northern edge of Hudson Bay, you have enough residual velocity to hit all 48 of the continential United States and all of Alaska. You can choose [to] point it left or right, and hit Maine or Alaska, or you can hit San Diego or Key West. That’s a monstrous problem.”

This makes it harder for U.S. leaders, in the crucial minutes before a potentially civilization-ending nuclear strike, to understand just what kind of weapon is inbound. more>

Updates from Georgia Tech

Smart Communities Address Transportation, Housing, Flooding Challenges
By John Tibbetts – Four Georgia communities are exploring innovative technologies and collaborating with local partners and Georgia Institute of Technology research teams to help drive the state’s smart development.

Georgia Tech leads the pilot Georgia Smart Communities Challenge, which supports one-year projects to develop and implement smart design solutions to some of the biggest challenges facing the state.

The four selected localities were chosen from a pool of applicants statewide.The cities of Albany and Chamblee and the counties of Chatham and Gwinnett are focusing on pilot projects to improve local housing investments, address traffic and transportation challenges, and develop more targeted flooding forecasts of storms and sea level rise along Georgia’s coast.

A local government coordinates each project. But community and neighborhood groups, industry, and others are crucial collaborators. A Georgia Tech researcher conducts studies and provides guidance in pursuit of each project’s goals, supported by graduate and undergraduate students.

Each community has received $50,000 in grants and $25,000 from Georgia Tech in research support. Communities also raised matched funds. Georgia Power is the lead sponsor, with additional financial support from the Atlanta Regional Commission. The work began in September 2018 and will continue through September 2019.

Students are engaged through the research projects but also through two additional summer programs. The Georgia Smart Community Corps is a full-time, paid summer fellowship for Georgia Tech students to become part of the project team. It is a joint collaboration with the Strategic Energy Institute, Center for Serve-Learn-Sustain, Center for Career Discovery and Development, and the Student Government Association. more>

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Updates from Chicago Booth

How local productivity growth affects workers near and far
One city’s boom can be felt across a nation
Chicago Booth – When big cities experience an economic boom, you expect an upsurge in wages and growth in those areas. But there’s some nuance: according to Chicago Booth’s Richard Hornbeck and University of California at Berkeley’s Enrico Moretti, one area’s surge particularly benefits low-skilled workers locally—and high-skilled workers elsewhere.

Using total factor productivity (TFP) as a measure of local productivity growth, Hornbeck Amount and Moretti analyzed two decades of data from major US cities to quantify the direct effects on people living in booming cities and the indirect effects on people elsewhere. Allowing for trade-offs between salary and cost-of-living increases, as well as unequal distribution of benefits across different groups, the researchers find that low-skilled workers gained the most from local productivity growth.

But gains extended further afield: a boom in San Diego or Los Angeles, say, was also felt in other cities. And high-skilled workers gained more from productivity growth in other cities. more>

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Updates from Georgia Tech

Signals from Distant Lightning Could Help Secure Electric Substations
By John Toon – Side channel signals and bolts of lightning from distant storms could one day help prevent hackers from sabotaging electric power substations and other critical infrastructure, a new study suggests.

By analyzing electromagnetic signals emitted by substation components using an independent monitoring system, security personnel could tell if switches and transformers were being tampered with in remote equipment. Background lightning signals from thousands of miles away would authenticate those signals, preventing malicious actors from injecting fake monitoring information into the system.

The research, done by engineers at the Georgia Institute of Technology, has been tested at substations with two different electric utilities, and by extensive modeling and simulation. Known as radio frequency-based distributed intrusion detection system (RFDIDS), the technique was described February 26 at the 2019 Network and Distributed System Security Symposium (NDSS) in San Diego.

“We should be able to remotely detect any attack that is modifying the magnetic field around substation components,” said Raheem Beyah, Motorola Foundation Professor in Georgia Tech’s School of Electrical and Computer Engineering and co-founder of Fortiphyd Logic, Inc. “We are using a physical phenomenon to determine whether a certain action at a substation has occurred or not.”

Opening substation breakers to cause a blackout is one potential power grid attack, and in December 2015, that technique was used to shut off power to 230,000 persons in the Ukraine. Attackers opened breakers in 30 substations and hacked into monitoring systems to convince power grid operators that the grid was operating normally. Topping that off, they also attacked call centers to prevent customers from telling operators what was happening. more>

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How the body and mind talk to one another to understand the world


By Sarah Garfinkel – When considering the senses, we tend to think of sight and sound, taste, touch and smell. However, these are classified as exteroceptive senses, that is, they tell us something about the outside world. In contrast, interoception is a sense that informs us about our internal bodily sensations, such as the pounding of our heart, the flutter of butterflies in our stomach or feelings of hunger.

The brain represents, integrates and prioritizes interoceptive information from the internal body. These are communicated through a set of distinct neural and humeral (ie, blood-borne) pathways. This sensing of internal states of the body is part of the interplay between body and brain: it maintains homeostasis, the physiological stability necessary for survival; it provides key motivational drivers such as hunger and thirst; it explicitly represents bodily sensations, such as bladder distension.

But that is not all, and herein lies the beauty of interoception, as our feelings, thoughts and perceptions are also influenced by the dynamic interaction between body and brain.

The shaping of emotional experience through the body’s internal physiology has long been recognized. The American philosopher William James argued in 1892 that the mental aspects of emotion, the ‘feeling states’, are a product of physiology. He reversed our intuitive causality, arguing that the physiological changes themselves give rise to the emotional state: our heart does not pound because we are afraid; fear arises from our pounding heart. more>