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Bill Fulkerson

Detecting Regions At Risk for Spreading COVID-19 Using Existing Cellular Wireless Netwo... - 0 views

ieeexplore.ieee.org/...9117073

detection network coronavirus regions wireless cellular

shared by Bill Fulkerson on 26 Jun 20 - No Cached
  • Bill Fulkerson on 26 Jun 20
     
    Goal: The purpose of this article is to introduce a new strategy to identify areas with high human density and mobility, which are at risk for spreading COVID-19. Crowded regions with actively moving people (called at-risk regions) are susceptible to spreading the disease, especially if they contain asymptomatic infected people together with healthy people. Methods: Our scheme identifies at-risk regions using existing cellular network functionalities-handover and cell (re)selection-used to maintain seamless coverage for mobile end-user equipment (UE). The frequency of handover and cell (re)selection events is highly reflective of the density of mobile people in the area because virtually everyone carries UEs. Results: These measurements, which are accumulated over very many UEs, allow us to identify the at-risk regions without compromising the privacy and anonymity of individuals. Conclusions: The inferred at-risk regions can then be subjected to further monitoring and risk mitigation.
Bill Fulkerson

Reducing transmission of SARS-CoV-2 | Science - 0 views

science.sciencemag.org/...1422

transmission Covid-19

shared by Bill Fulkerson on 31 Aug 20 - No Cached
  • Bill Fulkerson on 31 Aug 20
     
    Aerosol transmission of viruses must be acknowledged as a key factor leading to the spread of infectious respiratory diseases. Evidence suggests that SARS-CoV-2 is silently spreading in aerosols exhaled by highly contagious infected individuals with no symptoms. Owing to their smaller size, aerosols may lead to higher severity of COVID-19 because virus-containing aerosols penetrate more deeply into the lungs (10). It is essential that control measures be introduced to reduce aerosol transmission. A multidisciplinary approach is needed to address a wide range of factors that lead to the production and airborne transmission of respiratory viruses, including the minimum virus titer required to cause COVID-19; viral load emitted as a function of droplet size before, during, and after infection; viability of the virus indoors and outdoors; mechanisms of transmission; airborne concentrations; and spatial patterns. More studies of the filtering efficiency of different types of masks are also needed. COVID-19 has inspired research that is already leading to a better understanding of the importance of airborne transmission of respiratory disease.
Bill Fulkerson

New insights into the global silicon cycle - 0 views

phys.org/...9-insights-global-silicon.html

cycle silicon

shared by Bill Fulkerson on 04 Sep 20 - No Cached
  • Bill Fulkerson on 04 Sep 20
     
    Silicon is the second-most abundant element in Earth's crust and it plays a vital role in plant life, both on land and in the sea. Silicon is used by plants in tissue building, which helps to ward off herbivorous animals. In the ocean, phytoplankton consume enormous amounts of silicon; they get a constant supply courtesy of rivers and streams. And silicon winds up in rivers and streams due to erosion of silicon-containing rocks. Land plants also use silicon. They get it from the soil. In this new effort, the researchers began by noting that the terrestrial biogeochemical cycling of silicon (how it moves from plants back to the soil and then into plants again) is poorly understood. To gain a better understanding of how it works, they ventured to a part of Western Australia that, unlike other parts of the world, has not been impacted by Pleistocene glaciations. The soil there gave the researchers a look at the silicon cycle going back 2 million years.
Bill Fulkerson

Random Effects - 0 views

phys.org/...dom-effects-key-epidemics.html

epidemic Covid-19

shared by Bill Fulkerson on 27 Oct 20 - No Cached
  • Bill Fulkerson on 27 Oct 20
     
    To control an epidemic, authorities will often impose varying degrees of lockdown. In a paper in the journal Chaos, scientists have discovered, using mathematics and computer simulations, why dividing a large population into multiple subpopulations that do not intermix can help contain outbreaks without imposing contact restrictions within those local communities.
Steve Bosserman

Jane Jacobs's Theories on Urban Planning-and Democracy in America - The Atlantic - 0 views

www.theatlantic.com/...501104

democracy urban design ecosystems diversity neighborhoods

shared by Steve Bosserman on 17 Nov 16 - No Cached
  • Urban life was Jacobs’s great subject. But her great theme was the fragility of democracy—how difficult it is to maintain, how easily it can crumble. A city offered the perfect laboratory in which to study democracy’s intricate, interconnected gears and ballistics. “When we deal with cities,” she wrote in The Death and Life of Great American Cities (1961), “we are dealing with life at its most complex and intense.” When cities succeed, they represent the purest manifestation of democratic ideals: “Cities have the capability of providing something for everybody, only because, and only when, they are created by everybody.” When cities fail, they fail for the same reasons democracies fail: corruption, tyranny, homogenization, overspecialization, cultural drift and atrophy.
  • I was encouraged to believe that simple conformity results in stagnation for a society, and that American progress has been largely owing to the opportunity for experimentation, the leeway given initiative, and to a gusto and a freedom for chewing over odd ideas. I was taught that the American’s right to be a free individual, not at the mercy of the state, was hard-won and that its price was eternal vigilance, that I too would have to be vigilant.
  • Her 1,500-word speech, a version of which appears in Vital Little Plans, became the basis for The Death and Life of Great American Cities. Her main argument was Kirk’s: Small neighborhood stores, ignored by the planners in their grim demolition derby, were essential social hubs. She added that sidewalks, stoops, laundries, and mailbox areas were also indispensable centers of community activity, and that sterile, vacant outdoor space served nobody. “The least we can do,” she said, “is to respect—in the deepest sense—strips of chaos that have a weird wisdom of their own.”
  • ...5 more annotations...
  • Reduced to a word, Jacobs’s argument is that a city, or neighborhood, or block, cannot succeed without diversity: diversity of residential and commercial use, racial and socioeconomic diversity, diversity of governing bodies (from local wards to state agencies), diverse modes of transportation, diversity of public and private institutional support, diversity of architectural style. Great numbers of people concentrated in relatively small areas should not be considered a health or safety hazard; they are the foundation of a healthy community. Dense, varied populations are “desirable,” Jacobs wrote,
  • Madison argued that as you increase the “variety of parties and interests” contained within a republic, “you make it less probable that a majority of the whole will have a common motive to invade the rights of other citizens.”
  • “We need all kinds of diversity,” Jacobs concluded in Death and Life, “so the people of cities can sustain (and further develop) their society and civilization.”
  • In her comparative study of fallen empires, Jacobs identifies common early indicators of decline: “cultural xenophobia,” “self-imposed isolation,” and “a shift from faith in logos, reason, with its future-oriented spirit … to mythos, meaning conservatism that looks backwards to fundamentalist beliefs for guidance and a worldview.” She warns of the profligate use of plausible denial in American politics, the idea that “a presentable image makes substance immaterial,” allowing political campaigns “to construct new reality.” She finds further evidence of our hardening cultural sclerosis in the rise of the prison-industrial complex, the prioritization of credentials over critical thinking in the educational system, low voter turnout, and the reluctance to develop renewable forms of energy in the face of global ecological collapse.
  • In the foreword to the 1992 Modern Library edition of Death and Life, Jacobs likens cities to natural ecosystems. “Both types of ecosystems,” she writes, “require much diversity to sustain themselves … and because of their complex interdependencies of components, both kinds of ecosystems are vulnerable and fragile, easily disrupted or destroyed.”
Steve Bosserman

We Need an FDA For Algorithms: UK mathematician Hannah Fry on the promise and danger of... - 0 views

nautil.us/...we-need-an-fda-for-algorithms

ethics algorithms

shared by Steve Bosserman on 08 Nov 18 - No Cached
  • Right now other people are making lots of money on our data. So much money. I think the one that stands out for me is a company called Palantir, founded by Peter Thiel in 2003. It’s actually one of Silicon Valley’s biggest success stories, and is worth more than Twitter. Most people have never heard of it because it’s all operating completely behind the scenes. This company and companies like it have databases that contain every possible thing you can ever imagine, on you, and who you are, and what you’re interested in. It’s got things like your declared sexuality as well as your true sexuality, things like whether you’ve had a miscarriage, whether you’ve had an abortion. Your feelings on guns, whether you’ve used drugs, like, all of these things are being packaged up, inferred, and sold on for huge profit.
  • Do we need to develop a brand-new intuition about how to interact with algorithms? It’s not on us to change that as the users. It’s on the people who are designing the algorithms to make their algorithms to fit into existing human intuition.
Steve Bosserman

The Digital Freedom Pass: Emancipation from digital slavery | VOX, CEPR Policy Portal - 0 views

voxeu.org/...s-emancipation-digital-slavery

privacy data management slavery policy

shared by Steve Bosserman on 22 Aug 18 - No Cached
  • Digital identity management is currently undertaken by central identity providers, with users providing their data free to digital networks that own their digital identities. If users leave their digital networks, they must leave all their digital possessions, including their digital identities, behind. This system is analogous to slavery. It is neither efficient nor equitable. Users have no assurance that the value of the free data they provide bears any relation to the value of the free services they receive. The digital networks have overwhelming market power relative to their users. This column argues for reform in the form of a Digital Freedom Pass, – the digital equivalent of a wallet containing verified pieces of an individual’s digital identity. The person can then choose which identification to share, with whom, and when, allowing emancipation from our current digital slavery. 
Steve Bosserman

Sainsbury's launches £1.50 edible insect range in UK supermarket first - 0 views

news.sky.com/...-uk-supermarket-first-11556476

entomophagy food retail marketing

shared by Steve Bosserman on 24 Nov 18 - No Cached
  • "We're on a mission to show the West that as well as having very strong sustainability and environmental credentials, they are also seriously tasty and shouldn't be overlooked as a great snack or recipe ingredient."Sainsbury's and EatGrub say insects are more popular than might be expected, with a survey finding that 10% of Britons have tried them and more than half of those have enjoyed them.
  • Eat Grub says dried crickets contain more protein per gram than beef, chicken or pork - with 68g of protein per 100g, compared to 31g of protein in beef.Edible insects are also said to be more sustainable than other meat, taking up less land and requiring less animal feed than livestock.
  • Food policy manager at WWF Duncan Williamson said edible insects could help reduce shoppers' carbon footprint.He said: "As the population increases, we urgently need to look at alternative protein sources to make the most of land available for food production."
Steve Bosserman

New houses in Puerto Rico designed to survive future storms - 0 views

www.fastcompany.com/...rto-rico-survive-future-storms

affordable housing off the grid puerto rico

shared by Steve Bosserman on 28 Nov 18 - No Cached
  • The design is “based on what we know is affordable housing in Puerto Rico for a single family,” says Hector Ralat, an architect based in the firm’s Puerto Rican office. “But the focus was to alter the DNA of that knowledge and to put in the essential components that someone would need to sustain living conditions for at least two weeks, which is the recommended time here for someone to receive aid after a disaster.” The houses will likely cost around $120,000, a number that lets homeowners access favorable interest rates on mortgages. The units can be stacked on top of each other; in Villalba, most of the community will be three stories high (the solar will serve the whole building).
  • “We just know our product is better than stick-built construction in these types of dangerous environments,” says Paul Galvin, chairman and CEO of SG Blocks, the parent company of SG Residential. “Heavy-gauge steel structures are just designed to a high tolerance for the effects of climate change.” The houses, most of which will have two bedrooms, will start at $90,000 to $130,000. It might be possible to build cheaper houses, Galvin says, but the company is “trying to deliver product that is quality-driven, in that it’s going to be built once and it’s not going to be destroyed every storm.” The company is also working with a bank to create a mortgage that is similar in monthly cost to a car payment. The design can incorporate solar panels.
  • HiveCube, another modular housing company, is also using shipping containers, and has targeted a much lower cost–the houses start at $39,000 for a two-bedroom home. “We believe that your safety should not be a matter of income, but a given when you are planning to buy a home for your family,” says María Velasco, cofounder of HiveCube. The homes are designed to be fully off the grid, with solar power and batteries, a rainwater collection system, and a gray and black water treatment system that uses plants and bacteria to treat wastewater instead of septic tanks.
Bill Fulkerson

Scientists identify missing source of atmospheric carbonyl sulfide - 0 views

phys.org/...ospheric-carbonyl-sulfide.html

photosynthesis

shared by Bill Fulkerson on 06 Aug 20 - No Cached
  • Bill Fulkerson on 06 Aug 20
     
    Carbonyl sulfide (OCS) is the most stable and abundant sulfur-containing gas in the atmosphere. It is derived from both natural and anthropogenic sources and is of key interest to scientists investigating how much carbon dioxide (CO2) plants take out of the atmosphere for photosynthesis. Measuring CO2 alone cannot provide estimates of photosynthesis (taking up CO2) because plants also release CO2 through respiration. In contrast, OCS is taken up like CO2 but is not released by respiration, and can therefore provide valuable information about the rate of global photosynthesis.
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