Scientific Stereotype

Scientific stereotype

UPDATE: June, 2010

I recently learned of the FNAL “Drawings of scientists” project, which shows “Before and After” pictures of scientists after school students visited Fermilab. The image below is probably one of the most telling, but there are many others in a similar vein. Perhaps the solution to the problem is simply to arrange for all school students to have the opportunity to visit a real laboratory with real scientists of various flavours.

The wacky characters that introduce kids to science may be doing more harm than good. Reinforcing the white-man-in-a-lab-coat or mad-scientist stereotype could diminish not only children’s interest in science, but also the diversity of future scientific workplaces.

The Web is littered with “Ask a Scientist” sites aimed at getting children “into” science. Some of these sites do provide useful resources for youngsters curious about things such as “Why is the sky blue?”, “Why do men have nipples?“, and “How can I best extrapolate a Hurter-Driffield curve in my experiments on photographic material transmission densities?”

OK, I made that last one up. But the critical feature of many of these sites is the personification of the so-called expert with names like Ask a Boffin, “Find Out Why with Dr. Calculus,” Ask a Mad Scientist, or some such. Almost invariably, a cartoon character will be a stumpy guy in a white coat, with wild gray hair, waving a test tube around or wielding a clipboard. And, on the whole, he will be white. I was personally involved in one such “expert questions” site several years ago, and to my chagrin, the editor called the site “Ask the Egghead” – and created just such a character in the form of Professor Hypothesis.

What does this say about the common adult perception of how children perceive scientists? Well, for a start, it reinforces the classic stereotype of scientists as absent-minded professor cliche, generally messing around with chemicals or constantly scribbling notes in lab books and, almost certainly, white and male.

While grandiose efforts to promote high-quality science education abound, and public understanding of science (PUS) initiatives are high on the agendas of learned societies everywhere, these could be doomed from the outset by ingrained views we gain as children about what scientists do, what they look like, and who they are.

A fairly formal assay of children’s views of scientists was undertaken recently by a team at Leicester University in England and Australia’s Curtin University of Technology. Although the results have not yet been published, based on preliminary analysis the main conclusion from the research is that children think of scientists as boring white men with glasses, beards, and strange hair. According to lead researcher Tina Jarvis, director of Leicester’s School of Education, many children say they do not want to be a scientist because scientists never have fun!

Jarvis and colleagues, along with Lionie Rennie of Curtin, studied the responses of more than 4,000 children in Britain and Australia over the last eight years and concluded that the stereotypes persist, at least among six- to eight-year-olds. Worryingly, children of Asian and African-Caribbean descent generally held the same opinion as their white peers. Most children’s sketches of scientists endowed them with a white, male face and the usual eccentric hair. Boys, Jarvis says, never drew women, and girls did so only very occasionally. While there may well be a minority of scientists who fit the category, it indicates a very narrow view of scientists, one that is so very often reinforced through TV programs and cartoons, comic books, and comments from nonscientist parents and other adults. We then wonder why so many girls and non-white children find it very difficult to envision themselves as future scientists.

Elizabeth Moss, a Cambridge, England mother of two young children, believes there is a simple explanation for these results: “From age 2 or 3 to 5, children have such vivid imaginations, but then they go to school and are made to feel that they should think and act like everyone else and they seem to lose their individual imaginations, and draw what is expected of them.”

Alan Gray is 13 and in eighth grade in Ontario, Canada. “Recently, in our science class, we were asked to draw a picture of a scientist,” he reports. “When we handed it in, our teacher got what she expected: mostly all of us had drawn men with white lab coats and tubes with liquids in them.” He does not think the class was pandering to a greater stereotype, though. “If you asked us to draw popular kids, we’d draw them with makeup and nice clothes and big houses. If you asked us to draw farmers, we’d draw men with overalls, baseball caps, and straw in their mouths.”

Marilyn Fleer, associate professor of education at the University of Canberra in Australia, notes, “Although there are still stereotypical responses given when children are asked to draw a scientist, if you interview them they will qualify their work by saying they had to draw it that way, so that you know what it is.”

“This is an interesting area,” says Christine Khwaja, who teaches primary school teachers at Middlesex University in London. But she also asks whether children draw scientists as boffins because that is what they think scientists are really like, or because that is what they think they are expected to draw? “There seems to be very little in the national curriculum on the nature of science, who does it, and why,” she adds. She suggests, “A discussion around these areas might make children think more widely about who is a scientist and what scientists actually do.” She even suggests that there are many jobs, from hairdresser to zookeeper, in which science is important and that children’s image of scientists might be helped by raising awareness of these.

West Coast scientist and teacher Monique DeRuggiero says she much prefers jeans to lab coats, although she still keeps a well-decorated lab coat for messy labs and is not concerned by revelations of children perceiving scientists as stereotypes. “I do not see a problem with children drawing pictures of scientists as men in white coats; we do need to know what children’s perceptions are before we can change them.” She emphasizes the point that once you know what children expect, you can then teach them the reality by exposing them to examples of real scientists, showing them pictures, movies, stories of all types of scientists in all types of work. Getting real scientists to visit the school or taking a class trip to a lab can also help eradicate misconceptions.

Jupadhye Upadhye, a computer programmer with an Indian software company based in Singapore, blames comic books with characters like Inspector Gadget and stories that are littered with scientist stereotypes: Professor Calculus, Captain Nemo, Frankenstein, “Doc” Brown in the movie Back to the Future – even legendary quirky scientists such as Newton, and especially Einstein. “All of these add to the image,” she says. “Moreover, everyone likes to build myths and interesting characteristics around scientific personalities, to set them aside as somehow different from the rest of us.”

“It is important to challenge children in their thinking, and the adults who work with them,” believes Kate Banfield, who manages a preschool daycare center in West Yorkshire. If the children are portraying scientists as white middle-aged men in lab coats, she says, you need to offer them an alternative experience. Invite non-white or female scientists from local labs to talk about their work; find books and stories about scientists who are women or ethnic minorities. However, the most important strategy for breaking down stereotypes is to raise children’s awareness of what they are and how they are perpetuated. Encourage them to question assumptions and confront stereotypes.

The SCICentre (National Centre for Initial Teacher Training in Primary School Science) at Leicester University, of which Jarvis is director, produces materials to educate parents and educators about science, scientists, and technology. The latest booklet, entitled Helping Primary Children Understand Science and Technology, seeks to improve children’s ideas of scientists by getting them involved in activities such as role playing, discussions, and reading and writing about science. The booklet is illustrated with photographs of a diverse range of scientists at work with the aim of broadening views, presumably of both children and educators.

But Martin Counihan of the University of Southampton worries that children don’t think very much about scientists at all these days, compared with a couple of decades ago. “What image do children have of other rare breeds such as, say, theologians? Or historians?” he asks. “And insofar as children do think about scientists, their image is probably colored much more by the biosciences than previously.”

With the focus in school curricula on numeracy and literacy, especially in the U.K., there is little room for science. Yet Jarvis believes there is no reason why science cannot be incorporated into these two key areas and indeed enhance them. She believes that if children do not learn to love science before they are eleven, then the scientific part of their secondary education is essentially lost on them.

Fleer has looked into how technology education for young children has changed through the years. There’s been an increase in resource development to support technology teaching in schools, she says, but only a limited amount of research has been done in the three-to-eight-year-old age group to assess the effects. Although most parents are familiar with the seemingly innate scientific curiosity of their offspring, Fleer’s pilot study revealed that children as young as three years can engage in oral and visual planning as part of the process of making things, such as model giraffes and butterflies, from different materials.

Greg Degeyter is a meteorologist from Mississippi State University who has made several school appearances. “The students seemed genuinely interested in what was being said. Any well-presented information seems to strike their imagination and make them interested in the subject,” he says. He does not feel that the children expected someone in a white lab coat, but then accedes that most of their experiences with a meteorologist includes someone in a dress coat and tie, and suggests that is what they expect. “In general,” he adds, “I do think that children are intimidated by science. Perhaps not the younger ones but as they get older.” As for stereotypes seen by younger children, “It probably is true for scientists in general,” he suggests, “Most children seem to think of a doctor as someone who studies science, and he is in white garb.” He asks whether it is a bad thing. “Children think of scientists as smart, albeit a bit weird (as shown by the hair), and dedicated to the profession. If anything should be done it is to have more interaction between the scientific community and the public.”

Toby Bankson, a ninth grader in Mountlake Terrace, Washington, believes the stereotype may actually have some benefits. “It may be one of the things that turns a young child’s eyes toward science in the first place,” she says. “In a video show at school, for instance, would kids watch a ‘normal’ scientist for even 15 minutes?” she asks. Which is why shows like Bill Nye: The Science Guy and Beakman’s World are so popular and get children to pay attention willingly to information about science. “With everything else a kid could watch these days, that’s a small miracle!” adds Bankson.

Stereotypes persist in all walks of life, but in the realm of science, where public trust has become frazzled by the seeming autocracy of those guys with crazy hair wearing lab coats and wielding chemicals, perhaps it’s time to say goodbye to Professor Hypothesis and his cronies, and introduce children to some real scientists.

This feature article originally appeared under the title, Uncool boffins, all – children’s stereotypes of scientists – in my Adapt or Die column in the sunk HMSBeagle on the scuppered BioMedNet, it was reprinted here 2001-05-21 but hopefully its sentiments are worthy of repeating today if only to nudge the Null Physics item down to #2 ;-)

How to Discover Our Universe

Our Undiscovered UniverseApparently, scientific thought needs rekindling, seemingly it has run out of kindle and needs a new flame if it is to burn brighter. In steps Terence Witt with the concept of null physics. Witt has now self-published a hefty tome by the name of Our Undiscovered Universe.

According to the press blurb that came with my review copy of the book, he’s a visiting scientist at Florida Institute of Technology. Now, I can find FIT on the web, but I cannot find Witt at FIT. Anyway, he puts forward a not entirely original, idea that modern physics requires a paradigm shift back to common sense thinking and a logical reconnection between observation and theory.

There is, Witt says, a disconnect between the two in our current Big Bang theory of the origins of the universe. In Our Undiscovered Universe, Witt puts forward the hypothesis that the universe is static and not expanding, and rouses various equations to explain away the red shift of distant cosmic objects and concepts such as dark matter and dark energy.

Perhaps there are almost as many loopholes in modern physics as there are wormholes and maybe it is possible to tangle up any scientific model with enough string to fill a universe. But, Witt’s is too comfortable a conclusion, that the universe does not rely on any unknowable precursors in the untestable past and will not grow old, collapse or die, but is an unimaginably large cosmic engine. Moreover, his null hypothesis suggests that “our universe actually is, the only thing it could possibly be: the internal structure of nothingness.”

So, you might ask, what is Witt’s evidence for this concept? He explains that evidence of the Null Axiom is everywhere:

  • Matter and antimatter are always created in equal, yet opposite amounts whose electrical sum is zero
  • Positive and negative electric fields sum to a neutral universe with zero net electrical charge
  • Energy is conserved in all interactions; the magnitude of the universe’s energy has zero change
  • Space is a collection of points, little bits of nothingness itself, which embodies a geometric zero – Null
  • Charge must be conserved in particle interactions; the sum of the difference between charges is zero
  • Momentum is conserved, so the universe’s net momentum remains constant at zero

I put a few questions to Witt on behalf of Sciencebase readers just on the off-chance that a paradigm shift really is pending. First off, I asked him to describe null physics briefly.

Null physics is a bottom-up theory built upon the solution to the ontological dilemma: why does the universe exist [instead of nothing]? The solution – that our universe is composed of nothing – leads directly to the four-dimensional geometry of which energy and space are composed. Null physics is the study and quantification of this geometry and its larger ramifications. In contrast to modern physics’ top-down, heuristic approach, which uses measurements and mathematical symmetries to build models that conform to empirical reality, null physics derives empirical reality, such as the magnitude of unit elementary charge and the range and strength of the strong force, through calculations applied to the topology of a fully known underlying geometry.

I put it to Witt that because his theory is a blend of philosophy and science, that might be a double-edged sword?

Not at all. What we currently call physics originally began as natural philosophy. Physics replaced natural philosophy because it provided an accurate mathematical description of the macroscopic scale of the physical world. This set the stage for untold advances in engineering and technology, but many of the foundational questions that natural philosophy confronted, such as why the universe exists and why matter is composed of discrete particles, were lost in this transition, leaving us with empty mathematical models. Null physics is the best of both worlds, fusing a deep understanding of physical reality (as geometry) with empirical validation. The geometry used in Null physics is derived using logic and reasoning similar to that employed by natural philosophy, but has no philosophical component in its final geometric formulation.

Of course, there are other theories around that suggest the universe did not begin with the Big Bang, I asked Witt, what makes his stand out among them?

Sweeping unification and empirical validation. Unlike other non-Big Bang theories, null cosmology is falsifiable, provides testable predictions, and gives a full accounting of the many nuanced properties of the intergalactic redshift and CMB. It also, unlike any cosmology before it (including the Big Bang), provides a logical reason for the universe’s existence and a clear framework that unifies a wide variety of known galactic properties with the large-scale universe. And in keeping with true scientific progress, the unification provided by null cosmology illuminates a number of currently unknown galactic properties, such as the vortical motion of a galaxy’s disk material.

Finally, I was still curious about the philosophical implications and asked about what this theory can tell us of our place in the universe.

It tells us everything about our place in the universe. It tells us why and how we exist on a finite scale that, because of space’s intrinsic symmetry, must exist precisely midway between infinite largeness and smallness. It tells us that the universe is, through causality and sheer size, large enough to contain its own history. In fact the universe must contain its own history, because each and every moment of our lives is integral to ultra-large-scale structure. Perhaps most importantly, null physics demonstrates that our existence is neither accident nor design – it is inevitable.

Witt’s theory also closes the door on a designer. If the universe has always existed and always will exist, then how could a creator have any role to play at all? I suspect that an atheist agenda might underlie many of the static universe theories that are springing up at regular intervals, but they could be simply replacing unsubstantiated nonsense with another form of unsubstantiated nonsense. It’s just not good enough to ask, why are we here? And to answer, because we’re here!

Compare and Compare Alike

Back in June 2001, I reviewed an intriguing site that allows you to compare “stuff”. At the time, the review focused on how the site could be used to find out in how many research papers archived by PubMed two words or phrases coincided. I spent hours entering various terms hoping to turn up some revelationary insights about the nature of biomedical research, but to no avail.

I assumed the site would have become a WWW cobweb by now, but no! compare-stuff is alive and kicking and has just been relaunched with a much funkier interface and a whole new attitude. And as of fairly recently, the site now has a great blog associated with it in which site creator Bob compares some bizarre stuff such as pollution levels versus torture and human rights abuses in various capital cities. Check out the correlation that emerges when these various parameters are locked on to the current Olympic city. It makes for very interesting reading.

Since the dawn of the search engine age people have been playing around with the page total data they return. Comparing the totals for “Company X sucks” and “Company Y sucks”, for example, is an obvious thing to try. Two surviving examples of websites which make this easy for you are SpellWeb and Google Fight, in case you missed them the first time around.

compare-stuff took this a stage further with a highly effective enhancement: normalisation. This means that a comparison of “Goliath Inc” with “David and Associates” is not biased in favour of David or Goliath.

Compare-stuff with its new, cleaner interface now takes this normalisation factor to the logical extreme and allows you to carry out a trend analysis and so follow the relative importance of any word or phrase. For example, “washed my hair”, with respect to a series of related words or phrases, for example “Monday”, “Tuesday”, “Wednesday”…”Sunday”. The site retrieves all the search totals (via Yahoo’s web services), does the calculations and presents you with a pretty graph of the result (the example below also includes “washed my car” for comparison).

Both peak at the weekend but hair washing’s peak is broader and includes Friday, as you might expect. It’s a bit like doing some expensive market research for free, and the cool thing is that you can follow the trends of things that might be difficult to ask in an official survey, for example:

You can analyse trends on other timescales (months, years, time of day, public holidays), or across selected non-time concepts (countries, cities, actors). Here are a few more examples:

Which day of the week do people tidy their desk/garage?

At what age are men most likely to get promoted/fired?

Which popular holiday island is best for yoga or line dancing?:

Which 2008 US presidential candidate is most confident?

Which day is best for Science and Nature?

As you can see, compare-stuff provides some fascinating sociological insights into how the world works. It’s not perfect though. Its creator, Bob MacCallum, is at pains to point out that it can easily produce unexpected results. The algorithm doesn’t know when words have multiple meanings or when their meaning depends on context. A trivial example would be comparing the trends of “ruby” and “diamond” vs. day of the week.

The result shows a big peak for “ruby” on “Tuesday”, not because people like to wear, buy or write about rubies on Tuesday, but because of the numerous references to the song “Ruby Tuesday” of course.

However, since accurate computer algorithms for natural language processing are still a long way off, MacCallum feels that a crude approach like this is better than nothing, particularly when used with caution. Help is at hand though, the pink and purple links below the plot take you to the web search results, where you can check that your search terms are found in the desired context; in the top 10 or 20 hits that is. On the whole it does seem to work, and promises to be an interesting, fast and cheap preliminary research tool for a wide range of interest areas.

With summer well under way, Independence Day well passed, and thoughts of Thanksgiving and Christmas coming to the fore already (at least in US shops), I did a comparison on the site of E coli versus salmonella for various US holidays. You can view the results live here, as well as tweaking the parameters to compare your own terms.

Originally posted June 4, 2007, updated August 19, 2008

Red-hot Alchemist

Chilli PeppersIn my ChemWeb column, The Alchemist, this week:

Van Gogh was two-timing his canvas, the Alchemist learns this week, thanks to novel X-ray studies of a seemingly innocuous piece called Patch of Grass, which hides a woman’s face beneath its green and peasant landscape.

Professional wine tasters and vintners with a penchant for pepping up their plonk should have something new to worry about thanks to the development of an electronic tongue for detecting adulterated wines and those labeled with the wrong vintage.

In biochemistry, sex and sleep turn out to be inextricably entangled, at least in the world of the lab technician’s favorite nematode worm, Caenorhabditis elegans.

Traditional Chinese Medicine is heavily marketed despite a lack of clinical evidence of efficacy of many of the remedies. However, The Alchemist hears of a traditional remedy for allergy that, toxic components removed, could work to prevent life-threatening peanut allergy.

The world of red hot chili peppers wouldn’t be so hot if it were not for nibbling insects and a fungus that infects the chilis.

Finally, a million-dollar grant to get the blood pumping will for the next five years fund research into how the brain controls blood pressure and could eventually lead to new treatments for hypertension and cut deaths from cardiovascular disease.

Sexy Worms, an E-Tongue, and Kita Running

Spectroscopynow.comHere is a sneak preview of the various science news items I have scheduled to appear on August 15 over on SpectroscopyNOW.com

Stay young and beautiful – NMR spectroscopy has been used uncovered the secret of eternal youth and the ability to attract sexual partners almost at whim. The results suggest it all hinges on a novel group of pheromones. Unfortunately, before you head for the local pharmacy to stock up, these are pheromones of the lab-technician’s favourite worm, the nematode Caenorhabditis elegans, so they are likely to have no effect whatsoever on human behaviour or longevity.

Electronic wine tasting – The wine buff’s palate is a complicated multisensory organ as anyone who knows their Bordeaux from their Beaujolais knows. Now, researchers have taken a step towards an artificial nose based on a system amenable to multivariate analysis. The system integrates a multisensor to test wine and grape juice samples for adulteration or vintage fraud.

The Kita runners – Protein folding is one of the great conundrums of the twenty-first century. How exactly does a linear string of amino acids “know” into what three-dimensional cross-linked structure to fold itself? Moreover, how might molecular biologists predict this folding from first principles and how might the misfolding seen in prionic diseases, Alzheimer’s and other disorders be prevented or even reversed? A new clue about the folding of proteins comes from studies with a novel technique known as kinetic terahertz absorption spectroscopy (KITA).

Green and peasant landscape – There’s also a bonus item on science in art. Post-impressionist artist was rich beyond his wildest dreams but only posthumously. He may have chopped off part of one ear, but he had double vision. At least that’s the idea that emerges from new X-ray studies of one his more mundane paintings – Patch of Grass – which reveals a portrait of a peasant woman beneath.

Climate Change Debunked

climate-changeSo, how’s that for a blog post title? Catchier even than last Saturday’s New Harry Potter Trailer, right? So, is it just another spurious headline designed to grab attention or is there something in it? Well, you will no doubt have read about the recent APS debacle over the paper from Lord Monckton in which he stands up the anthropogenic climate change straw man and, pardon the pun, burns it down.

If you’re in the UK, or have figured out the BBC iPlayer hack to let you use that tool outside the UK, you may have seen the recent global-warming-coming-oil-crisis-we’re-all-doomed drama Burn Up. You probably also heard about a little fella called Al Gore and his inconvenient movie and the Channel 4 documentary that attempted to shred it, perhaps a little conveniently ignoring some key facts as it did so.

Meanwhile, power companies report massive profits and price rises for gas and electricity. They simultaneously pump up prices from well to wheel as the oil price bounces like a proverbial vulcanised rubber ball and everyone is looking to save gas.

I’ve published several items about alternative energy sources recently and still stand by the didact: waste not, want not. It’s important that we cut pollution and it’s important that we reduce the amount of energy we waste. We should be looking at what we are planning for the world, especially in light of madcap schemes like adding lime to the oceans, before it’s too late.

Joined Up Fuels

cars in snowThe green morals of UK motorists are currently being held to ransom by the government. The government hopes to increase vehicle taxes based on how much pollution a car produces – it’s a green tax, a carbon tax, call it what you will. Some drivers will end up paying twice as much each year to keep their car on the roads. The bigger the car, the theory goes, the more fuel it will use and so the more polluting it will be in terms of pumping out carbon dioxide and so the more vehicle tax you, the driver, must pay.

Apparently, big cars (4x4s, MPVs, big estates, and anything over 2.1 litre engine capacity, built before 2001, will be exempt from the approximate doubling of vehicle road tax that is imminent. And, that’s certainly a good thing. Not least because our family seven-seater has a 2.3 litre engine and was made in 1998. It all seems to make sense, at first glance. Who could argue with that? Such a tax increase will force drivers of big gas guzzlers to swap their Kensington Tractors for something a little more environment friendly.

But, it is not as if CO2 were the only pollutant, it’s not as if global warming were the only issue, and it’s not as if actually building new cars is a green process in itself. All those old-ish MPVs, are going to be sold on and new smaller cars bought, this drives the market, of course, and with an alleged recession pending, that might be a good thing in terms of economies. But, a quick back-of-the-envelope calculation will show that building a new car to replace that suddenly unwanted Kenny Tractor will expend far more energy and waste far more resources than continuing to drive it guzzling gas or not.

It seems to me that there is very little joined-up thinking when it comes to environmental issues. No one ever sits back and says, hold on a moment, when plans to potentially scrap millions of potentially serviceable vehicles for the sake of a tax saving comes up in discussion.

More to the point, the school-run of supersized vehicles, queuing up and belching out fumes while darling Jocasta and Joshua are delivered obesely to school without having to walk, is to some extend a tabloid a stereotype. Some people rely on the extra seats and space afforded them by the bigger car. One car transporting six or seven people, at an albeit lower mpg, is surely better than two cars wearing out the tarmac even at 10-20% lower total fuel consumption. Hummers and sports utes excepted, of course, but you don’t see many of those on British streets.

Karl Hillman and Björn Sandén of the Department of Energy and Environment, at Chalmers University of Technology, Sweden, seem to recognise this need for complete Life Cycle Assessments (LCA) including so-called Well-to-Wheel studies as they apply to the transport sector in general.

They have investigated how well decisions are being made as we strive to reduce pollution and to meet climate-change targets. They suggest that rarely are time and scale related factors given any attention, which I read to coincide with my points about swapping big vehicles for small at least in terms of energy wasted in the process and the splitting of transportation into ever smaller units.

Writing in the International Journal of Alternative Propulsion, the Chalmers team discusses how road transportation is currently responsible for 20-25% of world carbon dioxide emissions and is almost entirely (99%) dependent on fossil oil, despite the occasional hybrid siting.

To reduce oil dependence and greenhouse gas emissions, different policies are now being implemented to increase the share of motor fuels based on renewable energy. In the short term, the European Union directive on the promotion of the use of biofuels or other renewable fuels for transport forces the member states to set targets for the minimum use of renewable fuels.

Perhaps the UK government plans to use the extra tax it raises from gas guzzlers to develop renewables for transport so that it can meet EU and international targets more effectively. Somehow I doubt it, with deficits on every table, state-adopted banks heavily in the red, and a media-inspired recession just round the corner, I suspect every last penny will have been accounted for before you could say rapeseed methyl ester.

Hillman, K.M., Sanden, B.A. (2008). Time and scale in Life Cycle Assessment: the case of fuel choice in the transport sector. International Journal of Alternative Propulsion, 2(1), 1. DOI: 10.1504/IJAP.2008.019689

Sunbathing, Frozen Fleas, and Heavy Metal

Spectroscopynow.comI’ve got a whole new clutch of science news in my latest column on spectroscopy NOW for you this week:

Magnetic insights – A new MRI technique has been developed to allow physicists to see deep within tiny magnets. The technique could improve our understanding of magnetism at the fundamental level and lead to better computer hard drives and perhaps even new small-scale MRI instruments.

Salty solution to desalination – NMR spectroscopy has been used to assist in the development of chlorine-resistant membranes for use in water desalination plants. The new membrane materials could avoid degradation by chlorine disinfectants and reduce operating costs and inefficiencies and so make desalination a more viable prospect on a larger scale in the developing world. I asked the team leader Benny Goodman about the prospects for this system. “We anticipate a 3-5 year timespan to commercialization,” he told me, “The remaining obstacles are to demonstrate large-scale, continuous membrane production and to further tune the chemistry of the materials to be highly rejecting for seawater purification applications.” He added that, “Our current vision is that these membranes would be made in such a way that they could be used to swap out existing membranes.”

Summer screen – Wear sunscreen! It has been the advice of the medical profession, governments, and parents everywhere for several years, and is a topic I’ve touched on in how to sunbathe safely, on Sciencebase. Now, a report published this summer by the Environmental Working Group suggests that many popular sun protection products are at best ineffective, and at worst hazardous to health.

Reflecting on frozen fleas – US scientists have synthesised an antifreeze protein from the Canadian snow flea. The X-ray structure of this, and a synthetic enantiomeric form, could lead to an improved understanding of how this protein inhibits ice crystal formation and could have implications for transplant surgery.

Ordure, ordure! – A new study of soil fertilised with bovine manure reveals that soil quality can be improved significantly compared to that possible with modern “inorganic” farming methods. The study suggests that even poor quality land can be farmed for crops such as maize using manure as a soil improver.

Absorbing work on heavy metal – Chemical analysis and a powerful microscopy technique have been used to work out how toxic heavy metals, such as hexavalent chromium of Erin Brokovitch fame, can be adsorbed on to magnetic nanoparticles. The work could help in the development of a novel remediation technique for water contaminated with the carcinogenic hexavalen chromium.

New Harry Potter Trailer

My son used to be sooooo into Harry Potter and I’m sure he’ll go to see Harry Potter and the Half-Blood Prince when it shows in the UK, in fact when I mentioned this post he was only too keen to see the trailer. Of course, sadly, long gone are the days when all go to the cinema together as a family, so I’m going to have to content my self with a cinematic surprise for Saturday, at least until it makes it to DVD (just in time for Christmas). So here’s the Harry Potter teaser, trailer, trail, what you will, complete with young Voldemort (played by Ralph Fiennes nephew, no less, thanks Zath)

So, what you may ask, is the science connection with today’s post? Well, there is none. It’s Saturday, it should be a day of fun. Of course, if you want to a connection between science, technology and magic, then you only have to turn to the inimitable Arthur C Clarke book of quotes:

Any sufficiently advanced technology is indistinguishable from magic

This quote was turned on its head by science fiction author and astrophysicist Gregory Benford:

Any technology that is distinguishable from magic is not sufficiently advanced

And, to quote Robert Persig from one of my favourite books (Zen and the Art of Motorcycle Maintenance), in which the word technology might be switched for magic to bring us full circle in today’s Harry Potter theme:

There is an evil tendency underlying all our technology – the tendency to do what is reasonable even when it isn’t any good

And, with that in mind why not check out Harry Potter and the Terrorist Threat

Finding Experts

Finding expertsOne of the main tasks in my day-to-day work as a science writer is tracking down experts. The web makes this much easier than it ever was for journalists in decades since. There are times when a contact in a highly specialist area does not surface quickly but there are also times when I know for a fact that I’ve already been in touch with an expert in a particular area but for whatever reason cannot bring their name to mind. Google Desktop Search, with its ability to trawl my Thunderbird email archives for any given keyword is a boon in finally “remembering” the contact.

However, finding just a handful of contacts from web searches, email archives and the good-old-fashioned address book pales into insignificance when compared to the kind of industrial data mining companies and organisations require of their “knowledge workers”.

According to Sharman Lichtenstein of the School of Information Systems at Deakin University, in Burwood, Australia, and Sara Tedmori and Thomas Jackson of Loughborough University, Leicestershire, UK: “In today’s highly competitive globalised business environment, knowledge workers frequently lack sufficient expertise to perform their work effectively.” The same concern might be applied to those working in any organisation handling vast amounts of data. “Corporate trends such as regular restructures, retirement of the baby boomer generation and high employee mobility have contributed to the displacement and obfuscation of internal expertise,” the researchers explain.

The team explains how knowledge is increasingly distributed across firms and that when staff need to seek out additional expertise they often seek an internal expert to acquire the missing expertise. Indeed, previous studies have shown that employees prefer to ask other people for advice rather than searching documents or databases. Finding an expert quickly can boost company performance and as such locating experts has become a part of the formal Knowledge Management strategy of many organisations.

Such strategies do not necessarily help knowledge workers themselves lacking the search expertise and time required to find the right person for the job, however. So, Jackson developed an initial expertise locator system, later further developed with Tedmori, to address this issue in an automated way. The researchers discuss an automated key-phrase search system that can identify experts from the archives of the organisation’s email system.

Immediately on hearing such an intention, the civil liberties radar pings! There are sociological and ethical issues associated with such easy access and searchability of an email system, surely? More than that, an expert system for finding experts could become wide open to misuse – finding the wrong expert – and abuse – employees and employers unearthing the peculiar personal interests of colleagues for instance.

The first generation of systems designed to find experts used helpdesks as the formal sources of knowledge, and comprised simply of knowledge directories and expert databases. Microsoft’s SPUD project, Hewlett-Packard’s CONNEX KM system, and the SAGE expert finder are key examples of this genre, the researchers point out. Such systems are akin to Yellow Pages and are essentially electronic directories of experts that must be maintained on a continual basis. They allow anyone with access to tap into expertise, but unless the experts keep their profiles up to date, they can quickly lose relevancy and accuracy.

Overall, when large numbers of employees are registered and profiles are inaccurate, credibility is rapidly lost in such systems which are increasingly ignored by knowledge seekers.

Second generation expertise locators were based on organisations offering their staff a personal web space within which they could advertise their expertise internally or externally. Convenient for those searching but again relying on the experts in question to keep their web pages up to date. Moreover, simple keyword matching when searching for an expert would not necessarily find the best expert because the search results would depend on how well the expert had set up their web pages and whether and how well they had included keywords in those pages. In addition, keyword searching can produce lots of hits that must then be scanned manually, which takes time.

The third generation of expert searching relies on secondary sources, such as tracking the browsing patterns and activities of employees to identify individual experts. Such an approach raises massive privacy concerns, even for companies with a strict web access policy. Activity on forums, bulletin boards, and social networks falls into this third generation approach.

The fourth generation approach mashes the first three and perhaps adds natural language searching again with various efficiency and privacy concerns. Again, it does not necessarily find the best expert, but often just the person whose data, profile, and web pages are optimised (deliberately or by chance) to reach the top slot in the search results.

An approach based on key-phrase identification in e-mail messages could, however, address all requirements but throws up a new wave of privacy concerns, which Lichtenstein and colleagues discuss.

There are several features of email that make it popular and valuable for organisational knowledge work, and relevant to to finding an expert:

  • It attracts worker attention
  • It is integrated with everyday work
  • It provides a context for sense-making about ideas, projects and other types of business knowledge
  • It enables the referencing of work objects (such as digital documents), and provides a history via quoted messages
  • It has high levels of personalised messages which are appealing, meaningful and easily understood
  • It encourages commitment and accountability by automatically documenting exchanges
  • It can be archived, so providing valuable individual, collective and organisational memories that may be mined
  • It facilitates the resolution of multiple conflicting perspectives which can stimulate an idea for a new or improved process, product or service.

All these factors mean that email could become a very useful tool for finding experts. Already many people use their personal email archives to seek out knowledge and experts, but widen that to the organisational level and the possibilities become enormous.

The researchers have developed an Email Knowledge Extraction (EKE) system that utilises a Natural Language ToolKit (NLTK) employed to build a key-phrase extraction “engine”. The system is applied in two stages, the first of which “teaches” the system how to tag the speech parts of an email, so that headers and other extraneous information become non-searched “stop words” within the email repository. The second stage extracts key-phrases from the searchable sections of an email once it is sent. This extraction process is transparent to the sender and takes just milliseconds to operate on each email. A final stage involves the sender being asked to rank each identified key-phrase to indicate their level of expertise in that key-phrase area. A database of experts and their areas of expertise is gradually developed by this approach. Later, employees searching for experts can simply consult this database.

The EKE system has been implemented at Loughborough University and at AstraZeneca in trials and found to be able to capture employee knowledge of their own expertise and to allow knowledge workers to correctly identify suitable experts given specific requirements. The researchers, however, highlights the social and ethical issues that arise with the use of such as system:

  • Employee justice and rights and how these might conflict with employer rights.
  • Privacy and monitoring, as there is more than a small element of “Big Brother” inherent in such a system
  • Motivational issues for sharing knowledge, as not all those with expertise may wish to be data mined in this way, having enough work of their own to fill their 9-to-5 for instance
  • Relationships, as not everyone will be able to work well together regardless of expertise
  • Ethical implications of expert or non-expert classification, as the system could ultimately flag as experts those employees with little or no expertise.
  • Deliberate misclassification of experts, as all systems are open to abuse and malpractice.
  • Expert database disclosure, as such a comprehensive database if accessed illicitly by an organisation’s rivals could wreak havoc in terms of stealing competitive advantage, headhunting or other related activities.

Lichtenstein, S., Tedmori, S., Jackson, T. (2008). Socio-ethical issues for expertise location from electronic mail. International Journal of Knowledge and Learning, 4(1), 58. DOI: 10.1504/IJKL.2008.019737