OLDaily

2019 National High School Big Data Challenge: Big Data de Terre
STEM Fellowship Journal, 2019/02/21

I spent the day today as a judge in the Big Data Challenge for high school students at SAS in Toronto. This publication contains the abstracts of the finalists. "This year’s challenge provided a multidisciplinary competitive opportunity; over a period of three months, teams analysed sustainability data through the prism of computational methods. Teams worked to reveal the impact of environmental conditions on human health and well-being, diving into predictive analytics of optimal envi-ronmental characteristics for long-term, long-distance space travel.

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The Unstoppable Rise of Sci-Hub: How does a new generation of researchers perceive Sci-Hub?
David Nicholas, LSE Impact Blog, 2019/02/21

The author is not a Sci-Hub fan (calling its appeal "ideological" and its business model " a pure and unashamed ‘pirate’", but he does accurately capture the value of Sci-Hub vis-a-vis other reserach article sharing sites such as ResearchGate. "Sci-Hub’s attraction, unlike RG’s, is not its social media features (it has none), but that it offers free and relatively easy access to millions of papers harvested (illegally) from publishers’ websites. It is an open one-stop full-text warehouse."

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Vast amounts of data about our children are being harvested via apps used by schools. This is what is being collected and stored
Jamie Manolev, Anna Sullivan, Roger Slee, EduResearch Matters, 2019/02/21

This article references a recent report published by the UK Children’s Commission on data collection in schools, but the bulk of the article is dedicated to the data-collection activities of ClassDojo. The authors write, " New research examining ClassDojo is raising concerns about how student data about behaviour may be collected, accumulated and then used." The range of data collected is a bit astonishing, and includes such things as "working hard, on-task, and displaying grit." And it "may also obtain information, including personal information, from third-party sources to update or supplement the information you provided or we collected automatically." Via Aaron Davis.

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Once hailed as unhackable, blockchains are now getting hacked
Mike Orcutt, MIT Technology Review, 2019/02/21

One of my colleagues, Andriy Drozdyuk, has been saying all along that there is only one real blockchain, Bitcoin, because the innovation is as much social as it is technical. It is the investment and number of distinct users that makes it secure, not the technology. The recent Ethereum Classic hack may be proving him right. In this hack, bad actors took over more than half of the nodes and then began to write 'double spend' transactions, effectively defrauding the system. Ths is th sort of attack blockchain technology - though not necessarily Bitcoin - is vulnerable to. A lesson worth noting.

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