Just how bad does a graduate student’s performance have to be before her faculty adviser pulls the plug?
“Every program has them: vampire students. They’re the graduate students who don’t grow into their degree work. They get so-so grades. They fail an exam or two but won’t quit. They begin thesis work when they’re far from ready. More than anything, they show up asking for help again and again only to leave you drained and frustrated because, for all the time you have devoted to them, their work shows little improvement.”
Scientists have identified a set of tests that could help identify whether and how Huntington’s disease (HD) is progressing in groups of people who are not yet showing symptoms. The latest findings from the TRACK-HD study*, published Online First in The Lancet Neurology, could be used to…
I love grading undergraduate lab writing assignments.
3D Printer Makes World’s Smallest Human ‘Livers.’
3D printing technology just keeps getting better and better. This time, scientists at Organovo in San Diego were able to create a 3D printer that prints using liver cells. Layering these cells into a histologically correct lattice, the team plans to model disease processes and medication effects more accurately.
The plan is to eventually be able to print fully functional human livers that are viable for transplantation.
Watch this: Kevin Spacey becomes a real-life political puppet master in ‘House of Nerds’
If you thought House of Cardinals was a spot-on spoof of Netflix’s political drama House of Cards, just wait until you see what aired Saturday at the White House Correspondents’ Dinner in Washington, DC. The spoof, titled House of Nerds, brings together an ensemble cast of power players from the nation’s political and cultural power centers; “Washington and Hollywood,” Spacey says, reprising his role as the Machiavellian Frank Underwood. “Some new faces, some old faces, some new faces on old faces.” Unlike Underwood, some of those faces include Washington’s actual leaders from both sides of the aisle, including Senator John McCain, a cursing Rep. Steny Hoyer (a real House whip), White House Senor Advisor Valerie Jarrett, and others.
Alas, not what I looked like as I worked on my dissertation.Approximately one month ago, I fell into a rabbit hole – the rabbit hole better known as Writing My Dissertation. I’d been working toward that point for five years and counting, through seminars and conferences, experiments and literature reviews, conversations and late-night therapy sessions with an open statistics textbook and eyes full of tears over yet another beta or epsilon that I couldn’t for the life of me comprehend. But here it was: the home stretch. The final product of years of loving—and sometimes not-so-loving—labor. And partway through another all-nighter (I was working under some tight deadlines), I had an epiphany: thank god I’ve spent the last few years blogging, writing a book, and doing freelance journalism. Otherwise, I’d be lost. Truly.
“Just a Theory”: 7 Misused Science Words
Feel like you need to make serious distinctions within the language of science? Maybe brush up on a few key concepts of the subject? Perhaps you feel an article is using word tactics to get people to believe in something false. Scientific American (originally on LiveScience) has a great article highlighting 7 misused science words that are sure to put things into perspective for the public:
1. Hypothesis
The general public so widely misuses the words hypothesis, theory and law that scientists should stop using these terms, writes physicist Rhett Allain of Southeastern Louisiana University, in a blog post on Wired Science.
“I don’t think at this point it’s worth saving those words,” Allain told LiveScience.
A hypothesis is a proposed explanation for something that can actually be tested. But “if you just ask anyone what a hypothesis is, they just immediately say ‘educated guess,’” Allain said.
2. Just a theory?
Climate-change deniers and creationists have deployed the word “theory” to cast doubt on climate change and evolution.
“It’s as though it weren’t true because it’s just a theory,” Allain said.
That’s despite the fact that an overwhelming amount of evidence supports both human-caused climate change and Darwin’s theory of evolution.
Part of the problem is that the word “theory” means something very different in lay language than it does in science: A scientific theory is an explanation of some aspect of the natural world that has been substantiated through repeated experiments or testing. But to the average Jane or Joe, a theory is just an idea that lives in someone’s head, rather than an explanation rooted in experiment and testing.
3. Model
However, theory isn’t the only science phrase that causes trouble. Even Allain’s preferred term to replace hypothesis, theory and law — “model” — has its troubles. The word not only refers to toy cars and runway walkers, but also means different things in different scientific fields. A climate model is very different from a mathematical model, for instance.
“Scientists in different fields use these terms differently from each other,” John Hawks, an anthropologist at the University of Wisconsin-Madison, wrote in an email to LiveScience. “I don’t think that ‘model’ improves matters. It has an appearance of solidity in physics right now mainly because of the Standard Model. By contrast, in genetics and evolution, ‘models’ are used very differently.” (The Standard Model is the dominant theory governing particle physics.)
4. Skeptic
When people don’t accept human-caused climate change, the media often describes those individuals as “climate skeptics.” But that may give them too much credit, Michael Mann, a climate scientist at Pennsylvania State University, wrote in an email.
“Simply denying mainstream science based on flimsy, invalid and too-often agenda-driven critiques of science is not skepticism at all. It is contrarianism … or denial,” Mann told LiveScience.
Instead, true skeptics are open to scientific evidence and are willing to evenly assess it.
“All scientists should be skeptics. True skepticism is, as [Carl] Sagan described it, the ‘self-correcting machinery’ of science,” Mann said.
5. Nature vs. nurture
The phrase “nature versus nurture” also gives scientists a headache, because it radically simplifies a very complicated process, said Dan Kruger, an evolutionary biologist at the University of Michigan.
“This is something that modern evolutionists cringe at,” Kruger told LiveScience.
Genes may influence human beings, but so, too, do epigenetic changes. These modifications alter which genes get turned on, and are both heritable and easily influenced by the environment. The environment that shapes human behavior can be anything from the chemicals a fetus is exposed to in the womb to the block a person grew up on to the type of food they ate as a child, Kruger said. All these factors interact in a messy, unpredictable way.
6. Significant
Another word that sets scientists’ teeth on edge is “significant.”
“That’s a huge weasel word. Does it mean statistically significant, or does it mean important?” said Michael O’Brien, the dean of the College of Arts and Science at the University of Missouri.
In statistics, something is significant if a difference is unlikely to be due to random chance. But that may not translate into a meaningful difference, in, say, headache symptoms or IQ.
7. Natural
“Natural” is another bugaboo for scientists. The term has become synonymous with being virtuous, healthy or good. But not everything artificial is unhealthy, and not everything that’s natural is good for you.
“Uranium is natural, and if you inject enough of it, you’re going to die,” Kruger said.
Natural’s sibling “organic” also has a problematic meaning, he said. While organic simply means “carbon-based” to scientists, the term is now used to describe pesticide-free peaches and high-end cotton sheets, as well.
Check out the full article written by Tia Ghose and LiveScience
Now that vacation is over…
Flight back to the States boards in 1 hour and I will have no idea if I was awarded the GRFP.
Life.
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