Chemistry

On Saturday we are having an economics hackathon in London. I’d love to be there but unfortunately am going to the Eur Sem Web Conf in Montpelier. It’s run by Velichka and colleagues – here’s the sort of reason why (fro...
On Saturday we are having an economics hackathon in London. I’d love to be there but unfortunately am going to the Eur Sem Web Conf in Montpelier. It’s run by Velichka and colleagues – here’s the sort of reason why (from OKFN blog) Velichka Dimitrova revisted the disgraced Reinhart-Rogoff paper on austerity economics, the perfect evidence of the need for open data in economics – and was picked up by the London School of Economics and the New Scientist. The point is that economists made very serious mistakes and that proper management of the data and tools could have prevented it. We have to work towards reproducible computation in sciences and economics. From Velichka’s blog (and then I set you a puzzle at the end): Another economics scandal made the news last week. Harvard Kennedy School professor Carmen Reinhart and Harvard University professor Kenneth Rogoff argued in their 2010 NBER paper that economic growth slows down when the debt/GDP ratio exceeds the threshold of 90 percent of GDP. These results were also published in one of the most prestigious economics journals – the American Economic Review (AER) – and had a powerful resonance in a period of serious economic and public policy turmoil when governments around the world slashed spending in order to decrease the public deficit and stimulate economic growth. Yet, they were proven wrong. Thomas Herndon, Michael Ash and Robert Pollin from the University of Massachusetts (UMass) tried to replicate the results of Reinhart and Rogoff and criticised them on the basis of three reasons: Coding errors: due to a spreadsheet error five countries were excluded completely from the sample resulting in significant error of the average real GDP growth and the debt/GDP ratio in several categories Selective exclusion of available data and data gaps: Reinhart and Rogoff exclude Australia (1946-1950), New Zealand (1946-1949) and Canada (1946-1950). This exclusion is alone responsible for a significant reduction of the estimated real GDP growth in the highest public debt/GDP category Unconventional weighting of summary statistics: the authors do not discuss their decision to weight equally by country rather than by country-year, which could be arbitrary and ignores the issue of serial correlation. The implications of these results are that countries with high levels of public debt experience only “modestly diminished” average GDP growth rates and as the UMass authors show there is a wide range of GDP growth performances at every level of public debt among the twenty advanced economies in the survey of Reinhart and Rogoff. Even if the negative trend is still visible in the results of the UMass researchers, the data fits the trend very poorly: “low debt and poor growth, and high debt and strong growth, are both reasonably common outcomes.” Source: Herndon, T., Ash, M. & Pollin, R., “Does High Public Debt Consistently Stifle Economic Growth? A Critique of Reinhart and Rogoff, Public Economy Research Institute at University of Massachusetts: Amherst Working Paper Series. April 2013. What makes it even more compelling news is that it is all a tale from the state of Massachusetts: distinguished Harvard professors (#1 university in the US) challenged by empiricists from the less known UMAss (#97 university in the US). Then despite the excellent AER data availability policy – which acts as a role model for other journals in economics – the AER has failed to enforce it and make the data and code of Reinhart and Rogoff available to other researchers. Coding errors happen, yet the greater research misconduct was not allowing other researchers to review and replicate the results through making the data openly available. If the data and code were made available upon publication in 2010, it may not have taken three years to prove these results wrong, which may have influenced the direction of public policy around the world towards stricter aus
about 3 hours ago
The Scholarly Revolution #scholrev is forging ahead. Alexander Garcia Castro is running a fantastic hackathon n Montpelier immediately after the SePublica Polemics workshop.  Join us in Montpellier for a one-day event to hack on scholar...
The Scholarly Revolution #scholrev is forging ahead. Alexander Garcia Castro is running a fantastic hackathon n Montpelier immediately after the SePublica Polemics workshop.  Join us in Montpellier for a one-day event to hack on scholarly PDFs!Do you have tools that may help us to extract information from PDFs?send us an email so that we can include them in the hackathon.Would you like to extract citations from existing PDFs?Wouldn’t it be cool if we, scholars, did not have to pay for citationdata? What about author disambiguation?Are you interested in identifying and extracting meaningful parts from PDFs?Would you like to have XML/RDF for scholarly PDFs? What if you couldhave access to the actual content of the PDF for supporting the Web ofData?We are interested in all of these issues, send us your tools, ideas,comments and join us in Montpellier. We are also supporting remoteparticipation to the hackathon -hangout and webex.Visit us at http://scholrev.org/hackathon/casey.mclaughlin@cci.fsu.edualexgarciac@gmail.com–Alexander Garciahttp://www.alexandergarcia.name/http://www.usefilm.com/photographer/75943.htmlhttp://www.linkedin.com/in/alexgarciac One the important aspects of a revolution is having the right tools and this hackathon will collect what we’ve got and work out how to deploy them. “Jailbreaking” PDFs is not easy. It’s complex and it’s messy. But we are getting to the stage where we have the tools to: Download PDFs from the open web. Turn them into semantic form Filter the semantics and repurpose them – everything from metadata to citations to chemistry to phylogenetic trees Build a community And since we work with open source everything we do is a step forward. Once we have solved a problem it can’t be unsolved (unlike commercial closed tools which are often withdrawn of locked). There’s a great deal we can do with collaborative action (each person can add a stone to the building. All we have to do is care enough.
about 4 hours ago
Here's a man who says what he thinks about getting students into STEM careers: The United States spent more than US$3 billion last year across 209 federal programmes intended to lure young people into careers in science, technology, ...
Here's a man who says what he thinks about getting students into STEM careers: The United States spent more than US$3 billion last year across 209 federal programmes intended to lure young people into careers in science, technology, engineering and mathematics (STEM). The money goes on a plethora of schemes at school, undergraduate and postgraduate levels, all aimed at promoting science and technology, and raising standards of science education. In a report published on 10 April, Congress’s Government Accountability Office (GAO) asked a few pointed questions about why so many potentially overlapping programmes coexist. The same day, the 2014 budget proposal of President Barack Obama’s administration suggested consolidating the programmes, but increasing funding. What no one asked was whether these many activities actually benefit science and engineering, or society as a whole. My answer to both questions is an emphatic ‘no’. And I think he's right about that. Whipping and driving people into science careers doesn't seem like a very good way to produce good scientists. In fact, it seems like an excellent way to produce a larger cohort of indifferent ones, which is exactly what we don't need. Or does that depend on the definition of "we"? The dynamic at work here isn’t complicated. By cajoling more children to enter science and engineering — as the United Kingdom also does by rigging university-funding rules to provide more support for STEM than other subjects — the state increases STEM student numbers, floods the market with STEM graduates, reduces competition for their services and cuts their wages. And that suits the keenest proponents of STEM education programmes — industrial employers and their legion of lobbyists — absolutely fine. And that takes us back to the subject of these two posts, on the oft-heard complaints of employers that they just can't seem to find qualified people any more. To which add, all too often, ". . .not at the salaries we'd prefer to pay them, anyway". Colin Macilwain, the author of this Nature piece I'm quoting from, seems to agree: But the main backing for government intervention in STEM education has come from the business lobby. If I had a dollar for every time I’ve heard a businessman stand up and bemoan the alleged failure of the education system to produce the science and technology ‘skills’ that his company requires, I’d be a very rich man. I have always struggled to recognize the picture these detractors paint. I find most recent science graduates to be positively bursting with both technical knowledge and enthusiasm. If business people want to harness that enthusiasm, all they have to do is put their hands in their pockets and pay and train newly graduated scientists and engineers properly. It is much easier, of course, for the US National Association of Manufacturers and the British Confederation of British Industry to keep bleating that the state-run school- and university-education systems are ‘failing’. This position, which was not my original one on this issue, is not universally loved. (The standard take on this issue, by contrast, has the advantage of both flattering and advancing the interests of employers and educators alike, and it's thus very politically attractive). I don't even have much affection for my own position on this, even though I've come to think it's accurate. As I've said before, it does feel odd for me, as a scientist, as someone who values education greatly, and as someone who's broadly pro-immigration, to be making these points. But there they are. Update: be sure to check the comments section if this topic interests you - there are a number of good ones coming in, from several sides of this issue.
about 6 hours ago
I have been very honoured to be invited to lead off a workshop session at the European Semantic Web Conference (ESWC). This workshop is a radical initiative to change the way we think about information. Here’s the description: http...
I have been very honoured to be invited to lead off a workshop session at the European Semantic Web Conference (ESWC). This workshop is a radical initiative to change the way we think about information. Here’s the description: http://sepublica.mywikipaper.org/drupal/ There is much controversy in the world of publishing and semantic publishing needs to both create waves in publishing and to ride the waves of change approaching in the world of publishing. We therefore invite statements for presentation at a discussion session at SePublica 2013 at ESWC in Montpellier on 26 May 2013.We want radical, controversal and polemical positions to be articulated about semantic publishing and how we should achieve semantic publishing of scholarly works, data and all sorts of stuff. To be presented, statements must be relevant, legal and not too offensive(as judged by the workshop organisers).All acccepted statements wil be presented. Submission will be through easychair; all accepted polemics will bepublished before the meeting on the Knowledgeblog platform (http://www.knowledgeblog.org), where they will be permanently archived, and open for public comments. Submissions should be limited to 500 words. We can accept submissions in most formats, including Word, simple HTML (nothing in the header, no active content) or Latex (again the simpler the better). Presentations on the day wil be restricted to one slide that will be presented for two minutes (we will do this via timed slides) – all slide presentations must be submitted in advance. Presentations will be followed by a vivid discussion.Illustrating what we would like to have…Here’s To The Crazy Ones. The misfits. The rebels. The trouble-makers. The round pegs in the square holes. The ones who see things differently. They’re not fond of rules, and they have no respect for the status-quo. You can quote them, disagree with them, glorify, or vilify them.About the only thing you can’t do is ignore them. Because they change things. They push the human race forward. And while some may see them as the crazy ones, we see genius. Because the people who are crazy enough to think they can change the world – are the ones who DO !” (I [AlexanderGC?] believe this is from Steve Jobs, but I am not sure about the right atribution of sentence.) Welcome to SEPUBLICA 2013 For over 350 years, scientific publications have been fundamental to advancing science. Since the first scholarly journals, Philosophical Transactions of the Royal Society (of London) and the Journal de Sçavans, scientific papers have been the primary, formal means by which scholars have communicated their work, e.g., hypotheses, methods, results, experiments, etc. Advances in technology have made it possible for the scientific article to adopt electronic dissemination channels, from paper-based journals to purely electronic formats. However, In spite of improvements in the distribution, accessibility and retrieval of information, little has changed in the publishing industry so far. The Web has succeeded as a dissemination platform for scientific and non-scientific papers, news, and communication in general; however, most of that information remains locked up in discrete digital documents that are replicates of their print ancestors; without machine-interpretable content they lack the exploitation we have begun to expect from other data. Semantic enhancements to scholarly works would expose both the content of those works and the implicit discourse between those works. Scholarly data and documents are of most value when they are interconnected rather than independent.  This is a tremendous vision and I am deeply honoured to be asked to spark it off. I’ll try and indicate over the next 3-4 days some avenues. Polemics (https://en.wikipedia.org/wiki/Polemic ) are: a contentious argument that is intended to establish the truth of a specific understanding and the falsity of the contrary
about 8 hours ago
A ZnO/TiO2 heterojunction semiconductor photocatalyst in which two reactive TiO2 {001} facets are untouched by the ZnO
A ZnO/TiO2 heterojunction semiconductor photocatalyst in which two reactive TiO2 {001} facets are untouched by the ZnO
about 15 hours ago
about 18 hours ago
TEXAS
TEXAS
about 18 hours ago
Yesterday at the Council for Chemical Research meeting, Dow unveiled a publicly-accessible website with a comprehensive set of lab safety training videos plus additional resources. The website is at safety.dow.com. More details on the de...
Yesterday at the Council for Chemical Research meeting, Dow unveiled a publicly-accessible website with a comprehensive set of lab safety training videos plus additional resources. The website is at safety.dow.com. More details on the development of the site are in my C&EN story on the project. One tidbit that didn't make it into the news story: While the video hosts are professional actors, the supporting roles are played by Dow scientists. Related Posts:Developing laboratory safety certificationAcademic safety culture surveyWebinars: Safety culture and chemical safety committeesDow teams up with universities on lab safety, how'd…Talking about safety culture at #ACSDenver
about 21 hours ago
Training: Resource hosts comprehensive video library
Training: Resource hosts comprehensive video library
about 21 hours ago
Antibiotics: New highly active inhibitors of quorum sensing show promise as agents against staph infections
Antibiotics: New highly active inhibitors of quorum sensing show promise as agents against staph infections
about 23 hours ago