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How wearable AI could help you recover from covid

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How wearable AI could help you recover from covid


The Illinois program gives people recovering from covid-19 a take-home kit that includes a pulse oximeter, a disposable Bluetooth-enabled sensor patch, and a paired smartphone. The software takes data from the wearable patch and uses machine learning to develop a profile of each person’s vital signs. The monitoring system alerts clinicians remotely when a patient’s vitals— such as heart rate—shift away from their usual levels. 

Typically, patients recovering from covid might get sent home with a pulse oximeter. PhysIQ’s developers say their system is much more sensitive because it uses AI to understand each patient’s body, and its creators claim it is much more likely to anticipate important changes. 

“It’s an enormous benefit,” says Terry Vanden Hoek, the chief medical officer and head of emergency medicine at University of Illinois Health, which is hosting the pilot. Working with covid cases is hard, he says: “When you work in the emergency department it’s sad to see patients who waited too long to come in for help.  They would require intensive care on a ventilator. You couldn’t help but ask, ‘If we could have warned them four days before, could we have prevented all this?’”

Like Angela Mitchell, most of the study participants are African-American. Another large group are Latino. Many are also living with risk factors such as diabetes, obesity, hypertension, or lung conditions that can complicate covid-19 recovery. Mitchell, for example, has diabetes, hypertension, and asthma.

African-American and Latino communities have been hardest hit by the pandemic in Chicago and across the country. Many are essential workers or live in high-density, multigenerational housing.

For example, there are 11 people in Mitchell’s house, including her husband, three daughters, and six grandchildren. “I do everything with my family. We even share covid-19 together!” she says with a laugh. Two of her daughters tested positive in March 2020, followed by her husband, before Mitchell herself.

Although African-Americans are only 30% of Chicago’s population, they made up about 70% of the city’s earliest covid-19 cases. That percentage has declined, but African-Americans recovering from covid-19 still die at rates two to three times those for whites, and vaccination drives have been less successful at reaching this community. The PhysIQ system could help improve survival rates, the study’s researchers say, by sending patients to the ER before it’s too late, just as they did with Mitchell.

Lessons from jet engines

PhysIQ founder Gary Conkright has previous experience with remote monitoring, but not in people. In the mid-1990s, he developed an early artificial-intelligence startup called Smart Signal with the University of Chicago. The company used machine learning to remotely monitor the performance of equipment in jet engines and nuclear power plants.

“Our technology is very good at detecting subtle changes that are the earliest predictors of a problem,” says Conkright. “We detected problems in jet engines before GE, Pratt & Whitney, and Rolls-Royce because we developed a personalized model for each engine.”

Smart Signal was acquired by General Electric, but Conkright retained the right to apply the algorithm to the human body. At that time, his mother was experiencing COPD and was rushed to intensive care several times, he said. The entrepreneur wondered if he could remotely monitor her recovery by adapting his existing AI system. The result: PhysIQ and the algorithms now used to monitor people with heart disease, COPD, and covid-19.

Its power, Conkright says, lies in its ability to create a unique “baseline” for each patient—a snapshot of that person’s norm—and then detect exceedingly small changes that might cause concern. 

The algorithms need only about 36 hours to create a profile for each person. 

The system gets to know “how you are looking in your everyday life,” says Vanden Hoek. “You may be breathing faster, your activity level is falling, or your heart rate is different than the baseline. The advanced practice provider can look at those alerts and decide to call that person to check in. If there are concerns”—such as potential heart or respiratory failure, he says—“they can be referred to a physician or even urgent care or the emergency department.”

In the pilot, clinicians monitor the data streams around the clock. The system alerts medical staff when the participants’ condition changes even slightly—for example, if their heart rate is different from what it normally is at that time of day.  

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How the idea of a “transgender contagion” went viral—and caused untold harm

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How the idea of a “transgender contagion” went viral—and caused untold harm


The ROGD paper was not funded by anti-trans zealots. But it arrived at exactly the time people with bad intentions were looking for science to buoy their opinions.

The results were in line with what one might expect given those sources: 76.5% of parents surveyed “believed their child was incorrect in their belief of being transgender.” More than 85% said their child had increased their internet use and/or had trans friends before identifying as trans. The youths themselves had no say in the study, and there’s no telling if they had simply kept their parents in the dark for months or years before coming out. (Littman acknowledges that “parent-child conflict may also explain some of the findings.”) 

Arjee Restar, now an assistant professor of epidemiology at the University of Washington, didn’t mince words in her 2020 methodological critique of the paper. Restar noted that Littman chose to describe the “social and peer contagion” hypothesis in the consent document she shared with parents, opening the door for biases in who chose to respond to the survey and how they did so. She also highlighted that Littman asked parents to offer “diagnoses” of their child’s gender dysphoria, which they were unqualified to do without professional training. It’s even possible that Littman’s data could contain multiple responses from the same parent, Restar wrote. Littman told MIT Technology Review that “targeted recruitment [to studies] is a really common practice.” She also called attention to the corrected ROGD paper, which notes that a pro-gender-­affirming parents’ Facebook group with 8,000 members posted the study’s recruitment information on its page—although Littman’s study was not designed to be able to discern whether any of them responded.

But politics is blind to nuances in methodology. And the paper was quickly seized by those who were already pushing back against increasing acceptance of trans people. In 2014, a few years before Littman published her ROGD paper, Time magazine had put Laverne Cox, the trans actress from Orange Is the New Black, on its cover and declared a “transgender tipping point.” By 2016, bills across the country that aimed to bar trans people from bathrooms that fit their gender identity failed, and one that succeeded, in North Carolina, cost its Republican governor, Pat McCrory, his job.  

Yet by 2018 a renewed backlash was well underway—one that zeroed in on trans youth. The debate about trans youth competing in sports went national, as did a heavily publicized Texas custody battle between a mother who supported her trans child and a father who didn’t. Groups working to further marginalize trans people, like the Alliance Defending Freedom and the Family Research Council, began “printing off bills and introducing them to state legislators,” says Gillian Branstetter, a communications strategist at the American Civil Liberties Union.

The ROGD paper was not funded by anti-trans zealots. But it arrived at exactly the time people with bad intentions were looking for science to buoy their opinions. The paper “laundered what had previously been the rantings of online conspiracy theorists and gave it the resemblance of serious scientific study,” Branstetter says. She believes that if Littman’s paper had not been published, a similar argument would have been made by someone else. Despite its limitations, it has become a crucial weapon in the fight against trans people, largely through online dissemination. “It is astonishing that such a blatantly bad-faith effort has been taken so seriously,” Branstetter says.

Littman plainly rejects that characterization, saying her goal was simply to “find out what’s going on.” “This was a very good-faith attempt,” she says. “As a person I am liberal; I’m pro-LGBT. I saw a phenomenon with my own eyes and I investigated, found that it was different than what was in the scientific literature.” 

One reason for the success of Littman’s paper is that it validates the idea that trans kids are new. But Jules Gill-Peterson, an associate professor of history at Johns Hopkins and author of Histories of the Transgender Child, says that is “empirically untrue.” Trans children have only recently started to be discussed in mainstream media, so people assume they weren’t around before, she says, but “there have been children transitioning for as long as there has been transition-related medical technology,” and children were socially transitioning—living as a different gender without any medical or legal interventions—long before that.

Many trans people are young children when they first observe a dissonance between how they are identified and how they identify. The process of transitioning is never simple, but the explanation of their identity might be.

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Inside the software that will become the next battle front in US-China chip war

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screenshot of KiCad software for circuit board design and prototyping


EDA software is a small but mighty part of the semiconductor supply chain, and it’s mostly controlled by three Western companies. That gives the US a powerful point of leverage, similar to the way it wanted to restrict access to lithography machines—another crucial tool for chipmaking—last month. So how has the industry become so American-centric, and why can’t China just develop its own alternative software? 

What is EDA?

Electronic design automation (also known as electronic computer-aided design, or ECAD) is the specialized software used in chipmaking. It’s like the CAD software that architects use, except it’s more sophisticated, since it deals with billions of minuscule transistors on an integrated circuit.

Screenshot of KiCad, a free EDA software.

JON NEAL/WIKIMEDIA COMMONS

There’s no single dominant software program that represents the best in the industry. Instead, a series of software modules are often used throughout the whole design flow: logic design, debugging, component placement, wire routing, optimization of time and power consumption, verification, and more. Because modern-day chips are so complex, each step requires a different software tool. 

How important is EDA to chipmaking?

Although the global EDA market was valued at only around $10 billion in 2021, making it a small fraction of the $595 billion semiconductor market, it’s of unique importance to the entire supply chain.

The semiconductor ecosystem today can be seen as a triangle, says Mike Demler, a consultant who has been in the chip design and EDA industry for over 40 years. On one corner are the foundries, or chip manufacturers like TSMC; on another corner are intellectual-property companies like ARM, which make and sell reusable design units or layouts; and on the third corner are the EDA tools. All three together make sure the supply chain moves smoothly.

From the name, it may sound as if EDA tools are only important to chip design firms, but they are also used by chip manufacturers to verify that a design is feasible before production. There’s no way for a foundry to make a single chip as a prototype; it has to invest in months of time and production, and each time, hundreds of chips are fabricated on the same semiconductor base. It would be an enormous waste if they were found to have design flaws. Therefore, manufacturers rely on a special type of EDA tool to do their own validation. 

What are the leading companies in the EDA industry?

There are only a few companies that sell software for each step of the chipmaking process, and they have dominated this market for decades. The top three companies—Cadence (American), Synopsys (American), and Mentor Graphics (American but acquired by the German company Siemens in 2017)—control about 70% of the global EDA market. Their dominance is so strong that many EDA startups specialize in one niche use and then sell themselves to one of these three companies, further cementing the oligopoly. 

What is the US government doing to restrict EDA exports to China?

US companies’ outsize influence on the EDA industry makes it easy for the US government to squeeze China’s access. In its latest announcement, it pledged to add certain EDA tools to its list of technologies banned from export. The US will coordinate with 41 other countries, including Germany, to implement these restrictions. 

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Bright LEDs could spell the end of dark skies

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a satellite view of Earth on the hemisphere away from the sun with city lights visible


A global view of Earth assembled from data acquired by the Suomi National Polar-orbiting Partnership (NPP) satellite.

NASA

Specifications in the current proposal provide a starting point for planning, including a color temperature cutoff of 3,000 K in line with Pittsburgh’s dark-sky ordinance, which passed last fall. However, Martinez says that is the maximum, and as they look for consultants, they’ll be taking into account which ones show dark-sky expertise. The city is also considering—budget and infrastructure permitting—a “network lighting management system,” a kind of “smart” lighting that would allow them to control lighting levels and know when there is an outage. 

Martinez says there will be citywide engagement and updates on the status as critical milestones are reached. “We’re in the evaluation period right now,” she says, adding that the next milestone is authorization of a new contract. She acknowledges there is some “passionate interest in street lighting,” and that she too is anxious to see the project come to fruition: “Just because things seem to go quiet doesn’t mean work is not being done.”

While they aren’t meeting with light pollution experts right now, Martinez says the ones they met with during the last proposal round—Stephen Quick and Diane Turnshek of CMU— were “instrumental” in adopting the dark-sky ordinance.


In recent months, Zielinska-Dabkowska says, her “baby” has been the first Responsible Outdoor Light at Night Conference, an international gathering of more than 300 lighting professionals and light pollution researchers held virtually in May. Barentine was among the speakers. “It’s a sign that all of this is really coming along, both as a research subject but also something that attracts the interest of practitioners in outdoor lighting,” he says of the conference.

There is more work to be done, though. The IDA recently released a report summarizing the current state of light pollution research. The 18-page report includes a list of knowledge gaps to be addressed in several areas, including the overall effectiveness of government policies on light pollution. Another is how much light pollution comes from sources other than city streetlights, which a 2020 study found accounted for only 13% of Tucson’s light pollution. It is not clear what makes up the rest, but Barentine suspects the next biggest source in the US and Europe is commercial lighting, such as flashy outdoor LED signs and parking lot lighting. 

Working with companies to reduce light emissions can be challenging, says Clayton Trevillyan, Tucson’s chief building officer. “If there is a source of light inside the building, technically it’s not regulated by the outdoor lighting code, even if it is emitting light outside,” Trevillyan says. In some cases, he says, in order to get around the city’s restrictions, businesses have suspended illuminated signs inside buildings but aimed them outside. 

Light pollution experts generally say there is no substantial evidence that more light amounts to greater safety.

For cities trying to implement a lighting ordinance, Trevillyan says, the biggest roadblocks they’ll face are “irrelevant” arguments, specifically claims that reducing the brightness of outdoor lighting will cut down on advertising revenue and make the city more vulnerable to crime. The key to successfully enforcing the dark-sky rules, he says, is to educate the public and refuse to give in to people seeking exceptions or exploiting loopholes. 

Light pollution experts generally say there is no substantial evidence that more light amounts to greater safety. In Tucson, for example, Barentine says, neither traffic accidents nor crime appeared to increase after the city started dimming its streetlights at night and restricting outdoor lighting in 2017. Last year, researchers at the University of Pennsylvania analyzed crime rates alongside 300,000 streetlight outages over an eight-year period. They concluded there is “little evidence” of any impact on crime rates on the affected streets—in fact, perpetrators seemed to seek out better-lit adjacent streets. Barentine says there is some evidence that “strategically placed lighting” can help decrease traffic collisions. “Beyond that, things get murky pretty quickly,” he says.

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