Hugh Pickens DOT Com writes: Science writer and 42-year old pre-med student Barbara Moran writes in the NY Times that organic chemistry has been haunting pre-meds since 1910, when the Carnegie Foundation for the Advancement of Teaching released a landmark report calling for tougher admission standards to medical school and for medical training based on science. “The organic chemistry on the MCAT is chemistry that students need to know to succeed in medical school,” says Karen Mitchell, senior director of the MCAT Program. Basically, orgo examines how molecules containing carbon interact, but it doesn’t require equations or math, as in physics. Instead, you learn how electrons flow around and between molecules, and you draw little curved arrows showing where they go. This “arrow pushing” is the heart and soul of orgo. "Learning how to interpret the hieroglyphics is pretty easy. The hard part is learning where to draw the little arrows," writes Moran. "After you draw oxygen donating electrons to a positive carbon a zillion times, it becomes second nature." But the rules have many exceptions, which students find maddening. The same molecule will behave differently in acid or base, in dark or sunlight, in heat or cold, or "if you sprinkle magic orgo dust on it and turn around three times." You can’t memorize all the possible answers — you have to rely on intuition, generalizing from specific examples. This skill, far more than the details of every reaction, may actually be useful for medicine. “It seems a lot like diagnosis,” says Logan McCarty. “That cognitive skill — inductive generalization from specific cases to something you’ve never seen before — that’s something you learn in orgo.” This takes a huge amount of time, for me 20 to 30 hours a week writes Moran. This is one thing that orgo is testing: whether you have the time and desire to do the work. “Sometimes, if a student has really good math skills, they can slide through physics, but you can’t do that in orgo,” says McCarty . “You can’t slide through medical school, either.”
Nerval's Lobster writes: Security agencies in Europe have found a whole new way to identify and approach bombmakers and other potentially dangerous radicals. The only problem with the approach is that it stinks. Literally. Researchers in a European-Union funded project called Emphasis are developing chemical sensors that can be embedded in networks of underground sewage tunnels to sniff the air and phone home at the first hint of chemical residue from the manufacture of bombs. Using remote sensors might be effective because the liquid- and gas byproducts of bomb production – and manufacture of many drugs as well – leak, seep or are poured into sinks and toilets to get rid of the evidence, according to Hans Onnerud, an analytical chemist with the Swedish Defense Research Agency. With such a catchall underneath the city streets, and the chemical wherewithal to identify which smells belong to bombs or drugs and which belong to other things, it should be possible to keep a close watch on development of dangerous materials in a city without invading the homes of residents, Onnerud added. In fact, if sewer-sniffing technology had been in place in 2005, British authorities might have had a much easier time tracing the location of the bombers, or even detecting them ahead of time and stopping the London subway bomb attack that killed 54 people. Fumes from the bombs used in those attacks, which were assembled in a house in Leeds that had been turned into a compact bomb factory, were strong enough to kill plants in the garden. It’s extremely likely they would have been detectable from the sewer as well, Onnerud said in a statement announcing Emphasis. The sensors developed for Emphasis are designed to detect chemical reagents produced by the breakdown of chemicals in bombs. Each sensor is a 10-centimeter-long electrode that can be submersed in sewer wastewater to look for ions of the right configuration. Link to Original Source
jones_supa writes: Edward Snowden papers unmask that the German, French, Spanish and Swedish intelligence services have all developed methods of mass surveillance of internet and phone traffic over the past five years in close partnership with Britain's GCHQ eavesdropping agency. The bulk monitoring is carried out through direct taps into fibre optic cables and the development of covert relationships with telecommunications companies. A loose but growing eavesdropping alliance has allowed intelligence agencies from one country to cultivate ties with corporations from another to facilitate the trawling of the web. The files also make clear that GCHQ played a leading role in advising its European counterparts how to work around national laws intended to restrict the surveillance power of intelligence agencies. Link to Original Source
codeusirae writes: An initial round of criticism focused on how many files the browser was being forced to download just to access the site, per an article at Reuters. A thread at Reddit appeared and was filled with analyses of the code. But closer looks by others have teased out deeper, more systematic issues. Link to Original Source
mdsolar writes: Tomorrow at dawn on the US East Coast, a partial solar eclipse will rise. Solar eclipses have many uses. They can confirm the Theory of Relativity, allow study of the solar corona, and this week, help prepare for global warming induced sea level rise. The tides induced in the oceans when the Sun and Moon are aligned are particularly high (and low) and give a foretaste of the effects of sea level rise in the coming decades. Maryland Department of Natural Resources is asking for photos of these King Tides to help with preparation for the effect of sea level rise. Way to get out front Maryland. Link to Original Source
N8F8 writes: Like many IT professionals I provide a lot free helpdesk type support to friends and family. I've decided to expand my support work and create a site where Veterans can receive free computer help (VeteransHelp.org). I'm using OSTicket (osticket.com) for the ticket reporting. What It really need is an easy to use desktop sharing system. In the past I've used TeamViewer because it is easy to use but it is not really free for non personal use. Recently I switched to Meraki Systems Manager because it is free and it uses VNC but unfortunately it isn't intended for the one-time-use type support I'll be offering. So I'm looking for a reliable, open source, easy to use desktop sharing solution that I can set up on my site for people to join one-time-use help desk sessions.
An anonymous reader writes: Te release of OpenBSD 5.4 has been announce. New and notable advancements include new or extended platforms like octeon and beagle, moving VAX to ELF format, improved hardware support including Kernel Mode Setting (KMS), overhauled inteldrm(4), experimental support for fuse(4), reworked checksum handling for network protocols, OpenSMTPD 5.3.3, OpenSSH 6.3, over 7,800 ports, and many other improvements and additions.
theodp writes: "The Common Core State Standards Initiative," explains the project's website, ""is a state-led effort that established a single set of clear educational standards for kindergarten through 12th grade in English language arts and mathematics that states voluntarily adopt." Who could argue with such an effort? Not Bill Gates, who ponied up $150 million to help git-r-done. But the devil's in the details, notes Washington Post education reporter Valerie Strauss, who offers up a ridiculous Common Core math test for first graders as Exhibit A, which also helps to explain why the initiative is facing waning support. Explaining her frustration with the intended-for-5-and-6-year-olds test from Gates Foundation partner Pearson Education, Principal Carol Burris explains, "Take a look at question No. 1, which shows students five pennies, under which it says 'part I know,' and then a full coffee cup labeled with a '6' and, under it, the word, 'Whole.' Students are asked to find 'the missing part' from a list of four numbers. My assistant principal for mathematics was not sure what the question was asking. How could pennies be a part of a cup?" The 6-year-old first-grader who took the test didn't get it either, and took home a 45% math grade to her parents. And so the I'm-bad-at-math game begins!