Big Data

Big Data, Big Data
Wanna analyze it soonah, rather than latah

Big Data

At the midpoint of the 20th century, scientists at Los Alamos confronted a new challenge: Although the equations governing nuclear explosions were relatively simple to write down, they were immensely difficult and time consuming to solve. This led to the invention and use of first mechanical and then electronic computers, and the dawning of the age of computational science, which advances understanding through simulations made by solving equations in fields ranging from biology to physics to hydrodynamics.

The arrival of big data science in the last two decades constitutes another scientific revolution.

A Royale with Cheese

Fed up with imperial

I gained a niece and a nephew in the last few weeks. They were about the normal size for babies, which is about 8 pounds plus a few shillings. I know this is roughly what babies often weigh. But I do not know why we weigh babies in currency.

What really grates is that I can’t get some imperial measures out of my head. Like the baby thing. What does an average baby weigh in kilogrammes? (About three and a half, but I had to look it up, even though one of my kids was born in Germany.)

The US gets a lot of flack for not having gone metric, but it seems that places that have gone metric still haven’t fully gone metric.

The pub is a mile (about 19,296 yards, or three times as many feet) down the road and they are served beer in pints (about 78 and three eighths fluid ounces). It’s just not fair.

Not sure of the reference here. A mile is 1760 yards on this side of the pond.

What Burnout?

Graduate School Burnout Quantified

For most graduate students in physics, a research focused career ranks more attractive than teaching, government work, or science outreach and writing. Most PhD physicists, however, will never attain a tenure-track position at a university. Upon entering graduate school, many students realize that the odds are against them, but they push forward regardless.

[Sigh] Another story on grad school. This idea that it isn’t until one enters graduate school that one is clued in that most PhD physicists don’t go on to become research professors is a curious one; I think that physics undergraduates are more capable at math than that.

I suspect that the reason a research career becomes less attractive as one goes through school is that one learns some of the details of what research entails. The number of hours, the bureaucracy, the amount of time the professor is doing things other than actual research — the things you only get to see close-up. This is actually mentioned in the study; they also mention that they asked the students to not consider the availability of jobs when assessing the desirability.

Magnifying the Universe

Magnifying the Universe

While other sites have tried to magnify the universe, no one else has done so with real photographs and 3D renderings. To fully capture the awe of the vastly different sizes of the Pillars of Creation, Andromeda, the sun, elephants and HIV, you really need to see images, not just illustrations of these items. Stunningly enough, the Cat’s Eye Nebula is surprising similar to coated vesicles, showing that even though the nebula is more than 40,000,000,000,000,000,000,000 times larger, many things are similar in our universe.

No Bones About It

Prime Suspect: Did the Science Consultant Do It?

Synopsis: an episode of Bones does a sendup of the existence of science consultants in TV/movies, followed by some tips on the path to becoming a Hollywood science consultant.

I’ve told one of my stories of being a ghost-consultant of sorts. I got a few free meals out of it, which were welcome because I was in grad school (as well as an annual insight into a few upcoming episodes of Star Trek, useful for impressing my friends), and of course, it’s also the story of someone who made it in that job, for a while — it was a transition to being a writer and beyond.

I recall giving my friend some static when I found flaws in the science, but invariably the response was that the story was more important, and if certain bad science was critical to the plot line, the bad science wasn’t going to be excised from the script. Yes, it’s window dressing; it might be taken more seriously if it was considered bad dialog or a serious threat to suspension of disbelief, but it’s only a shortcoming for the scientifically literate among us. If there were more of us the issue might be taken more seriously.

Schmientist Shortage

What Scientist Shortage?

But what “we all know,” as Senator Cornyn put it, turns out not to be true—and the perpetuation of this myth is discouraging Americans from pursuing scientific careers. Leading experts on the STEM workforce, including Richard Freeman of Harvard, Michael Teitelbaum of the Alfred P. Sloan Foundation, Paula Stephan of Georgia State University, Hal Salzman of Rutgers, Lindsay Lowell of Georgetown, and Norman Matloff of the University of California-Davis, have said for years that the US produces ample numbers of excellent science students. In fact, according to the National Science Board’s authoritative publication Science and Engineering Indicators 2008, the country turns out three times as many STEM degrees as the economy can absorb into jobs related to their majors.

One of the answers, from later in the article,

The public perception of a dearth of homegrown talent has shaped national policy, permitting companies and universities to import tens of thousands of foreign scientists and IT workers who toil for artificially low wages.

I think it’s important to properly define what we’re talking about. Are we talking about a shortage of domestic STEM workers? Because that could still be the case, and we’ve simply saturated the market with imported workers.

The subtitle of the article is “The Johnny-can’t-do-science myth damages US research”, which seems to be much more about scientific literacy than science as a career, which seems to me to be a distinct issue and makes arguments somewhat muddled right off the bat. Acceptance of science such as evolution and climate change are abysmal, and I think science literacy levels reflect that. Even if one were to accept that we don’t need more scientists, that does not mean we need less science education.

The author cites Science and Engineering Indicators 2008, but doesn’t give any specific citation for the claim for the 3X too many STEM graduates.

I find this tidbit in the highlights for chapter 3

Between 1980 and 2000, the total number of S&E degrees earned grew at an average annual rate of 1.5%, which was faster than labor force growth, but less than the 4.2% growth of S&E occupations. The loose fit between degrees and occupations and the immigration of S&E workers helped to account for the different rates of degree and occupation growth.

which supports the idea that we have a shortage.

There’s also this, from the “Labor Market Conditions for Recent S&E Graduates” section

At the bachelor’s degree level, across all S&E fields, the IOF [in other field] rate was 11.5%, but ranged from 3.6% for recent engineering bachelor’s graduates to 15.7% in the social sciences. In all fields of degree, the IOF rate decreases with level of education, reaching 2.9% for recent doctorate recipients.

Nothing close to 2/3 of STEM recipients working outside of their field, according to these numbers. (I wonder if this is merely the “the only acceptable job for a PhD is to be a professor” canard.)

However, I wonder if that even matters. Is a Literature major a failure if s/he does not get a job involving reading all day? Colleges are not vocational schools.

American college students have for decades shown strong and consistent interest in STEM; year after year, just under a third of all college students in this country earn degrees in those subjects. But, ironically, dismal career prospects drive many of the best of those students to more promising professions, such as medicine, law, or finance.

I think this is just a gross misrepresentation of reality. Anyone who aspires to a career in medicine or law goes to a school requiring an undergraduate degree. For those who drop out of pre-med, many of them don’t stay in the science field, so it’s not fair to characterize medical students as disillusioned scientists — they wanted to be doctors, which says nothing about how they arrived at that decision. Which raises the question about lawyers who majored in science — perhaps patent law was their goal all along. The reporter didn’t ask, so we don’t know.

The author also cites testimony from Ronil Hira, during a Senate hearing

Contrary to some of the discussion here this morning, the STEM job market is mired in a jobs recession…with unemployment rates…two to three times what we would expect at full employment….Loopholes have made it too easy to bring in cheaper foreign workers with ordinary skills…to directly substitute for, rather than complement, American workers. The programs are clearly displacing and denying opportunities to American workers.

I agree with the effect, but no numbers are cited. STEM unemployment is usually lower than for the general public, so having 2-3x the rate when the general population is also having a similar (or larger) increase in their unemployment rate is not exactly a smoking gun for having a glut of scientists.

Beyond all this, there was a recent set of discussions about employment life in Phd-land. Comrade Physioprof says “Overproduction of PhDs” Is Demonstrably False. Mike the Mad Biologist and Chemjobber disagree, citing a flat salary curve. Once again, I have to say that the problem hasn’t been properly phrased. The flat salary points to saturation, but when you have more than one source — domestic and foreign — you can’t trace this back to domestic overproduction. It’s one equation with two unknowns. Consider, however, this note from the “highlights” section of the Science and Engineering Indicators 2008:

About half of S&E doctorate holders in U.S. postdoc positions may have earned their doctorates outside of the United States.

About half! I would argue from this that the domestic supply of scientists is indeed short of the mark, if we have to bring this many in from abroad. I’m sure that academia and industry like the salary competition from this, but it would seem that any oversupply that we have is not because we are producing too many at our own universities.

It's Later Than You Think

Gender Issues Start Sooner Than You Think

It’s a good post, linking to another good post. Go read it/them.

The more of this stuff I see, though, the more I think that many women-in-STEM initiatives in higher ed are aiming at the wrong target. If you want to really change things, you need to start earlier. About eighteen years earlier, probably more (since the minds you really need to change are the parents’).

(Of course, to be fair to those initiatives, they’re working on changing what they can. College faculty have a fairly minimal ability to affect the conditions even at their own children’s schools and day care centers, but they have a good deal more flexibility to affect their own classes and departments. And even too little, too late is better than nothing at all.)

From my own perspective, I used to observe and even weigh in on some of the STEM gender discussions, only to have the attitude that “it’s university-level discrimination, and only university-level discrimination, dammit” prevail, and anyone not toeing the line getting lambasted, regardless of the validity of their argument. This happened too many times, in a setting of a bunch of scientists, which I found to be dismaying. Thus I usually duck or run the other way when the subject comes up these days. I have no use for conversation where volume is substituted for facts.