Whose line is it, anyway?

Whose line is it? Nineteenth century British Prime Minister Benjamin Disraeli supposedly remarked that there are “lies, damned lies and statistics.” Although often cited, we have no evidence that the phrase originated with Disraeli. A more likely possibility is that it originated with an American author, with Samuel Langhorne Clemens, better known as Mark Twain. Regardless of its origin, the phrase implies that the manipulation of statistics is so easy that their use is tantamount to telling the worst kind of lie.

Mark Twain vs Benjamin Disraeli
Whose lies, Twain’s or Disraeli’s?

In science circles we hear regularly of the misuse of statistics, in the media, down at the pub, and in some cases by scientists themselves. But, argues Richard Hamilton of The Mershon Center, at Ohio State University, in Columbus, although stats might be manipulated, it is much easier to lie without them. Writing in IJBG, Hamilton suggests that, “With the constraint of evidence removed, an author can proceed unhindered to the declaration (or revelation) of a preferred ‘truth’.” He argues that there is a disconnection between the two branches of intellectual endeavours, the discovery/ research and the reporting/ dissemination. He believes that in the works of many popular writers, biographers, historians, social scientists, journalists, and freelance commentators the connection is often broken. He says that assertions are being made and “facts” stated with little research to support them and that these “declared truths” are a serious problem.

Part of the problem is that declared truths are made about human society, our beliefs and behaviour, especially in the context of history, without the recognition that while today we have access to enormous quantities of data on public opinion, prior to the 1930s, with rare exception we had essentially no credible information on the attitudes or the actions of “the masses”. We have, for example, no real knowledge of how close families were in New York City up to the 1830s at which point, according to commentator Alexis de Tocqueville, family values collapsed. Some accounts have it that the Great War was a response to popular opinion, to “strong anti-Serbian feeling [among the public] in Austria-Hungary.” This too lacks evidence, no one had polled “the people.”

We have one striking exception, this involving the storming of the Bastille in 1789. Many accounts have it that “Paris” rose in arms. But in this case we have some evidence, the participants having been given a certificate attesting to participation. The number, sometimes referred to as the “sacred nine hundred,” would have formed about one percent of the city’s possible contenders. Most Parisians, apparently, were doing something else on that famous day.

To repair the disconnection between research and reporting, we must discard those deceptions, the declared truths. On many occasions, the most honest intellectual stance for an author is an easy one, a simple statement–I don’t know.

Research Blogging IconHamilton R. (2013). Things not known, Int. J. Business and Globalisation, 10 (3) 233-244. DOI: 10.1504/IJBG.2013.052985

Greening end of life gadgets

electrical circuit cityscapeWaste electrical and electronic equipment (WEEE) is a growing problem, there are mountains of obsolete computers, mobile phones, refrigerators, televisions etc piling up on dumps around the world. Regulations implemented at the National and European levels seek to force those disposing of WEEE to recycle and reclaim the countless, often toxic, materials present in wiring, circuitry, electrical transformers, displays, casings, pipework.

However, Anastasia Katsamaki and Nikolaos Bilalis of the Department of Production Engineering and Management, at the Technical University of Crete, suggest that we should be taking a step back from the recycling and reclamation paradigm and designing instead for the whole cycle and in particular at the end-of-life (EOL) stage of device design. This would from the outset cut down on the variety of materials employed, avoid the use of those likely to generate toxic residues and focus on the greening of gadgets.

The European Union implementation of 2002/96/EU Directive from August 2005 already demands that EOL issues are studied from the perspective of product disassembly, recycling, reuse and remanufacturing and from the perspective of design and technical support. But, while this has led to a lot of theorizing, and certainly pressure on the recycling schemes and landfill policies of local authorities, much remains to be done.

The researchers suggest that there are five objectives surrounding cutting down on WEEE:

  1. The efficient exploitation of natural resources used during the whole lifecycle.
  2. To promote reuse, remanufacture and recycling after the end of useful life .
  3. The use of materials with low environmental impact that are also readily recyclable.
  4. The minimisation of different materials used that simplifies their separation.
  5. The design of products that can be easily disassembled.

They have now shown how their objectives might be applied successfully to the example of electrical transformer design and so reduce the EOL impact of such a device. Their ongoing work will test the approach in other categories of device.

Research Blogging IconKatsamaki A. & Bilalis N. (2012). Determination of redesign proposals to optimise end-of-life treatment of electrical and electronic equipment, International Journal of Product Lifecycle Management, 6 (2) 161. DOI: 10.1504/IJPLM.2012.052675

38 things you might not know about the Moon

full-moon-photo#18 It may seem obvious, but art does not always capture the true appearance of the Moon: where it is in the sky always tells you where the Sun is.

You will never see a crescent Moon looking like an open parachute: if the crescent is on its side, the "horns" will point upwards, indicating that the Sun is"below" the Earth’s horizon. A full Moon indicates that the Sun is "behind" the Earth.

Cecilia Payne-Gaposchkin, wrote in a 1954 astronomy textbook: "It is an amusing pastime to note the impossible moons portrayed by some artists: a new moon high in the northern sky, for instance; a full moon near sunset in the west; or a crescent with horns pointed downward."

Alice in Galaxyland: 38 things you might not know about the Moon.

Can drinking green tea or coffee cut stroke risk?

Probably not.

A recent study from Japan was much hyped in the media earlier this week but as NHS Choices points out, the researchers themselves offered a number of limitations to their study:

The information on illness, green tea and coffee consumption was all self-reported, which introduces the possibility of error. For example, although food frequency questionnaires are an accepted way to assess food intake, there may still be errors in people’s estimations of their consumption.

People’s consumption of green tea and coffee was only measured once, so any changes in consumption over the years was not taken into account by the study. It was not clear when the potential confounders (e.g. smoking) were assessed, and these may also have changed over the course of the study.

The results may have been affected by other factors (confounders). The researchers did adjust for a number of these, including other dietary factors, but others could be having an effect. In particular, although researchers adjusted their results for whether people took medication for high blood pressure or high cholesterol, they did not take account of the existence of these conditions in participants who were not taking medication.

The study took place in Japan so its results may not be applicable to the UK or other countries.

 

These kinds of studies are endless, one week they demonstrate an effect or correlation the next another team demonstrates the opposite. But, there are no panaceas, no miracle cures or preventatives, too much of any substance will have detrimental effects one way or the other. So, if you enjoy a cup of tea at breakfast and a coffee mid-morning, fine, carry on, if you’re drinking twenty cups of either every day to boost your health, you’re probably on to a loser…

Can drinking green tea or coffee cut stroke risk?

Whatever happened to acid rain?

modern power station with scrubbersThere’s a cute video montage currently doing the rounds in which a re-working of the Billy Joel song “We didn’t start the fire” reminisces about growing up in the 1970s and the 1980s and cites the countless games, toys, TV shows and other cultural references we had during that time years before anyone had an iPad, mobile phone or other essential gadget. Featured is the Rayleigh Chopper bicycle, Atari video games, Tiswas, and Swap Shop (it’s very British, did I already say?). Most of the references are positive but a few things are missing the ever-present mutually assured destruction and the threat of nuclear war and in those pre-climate change times when were knew about greenhouse gases but were worried about the coming Ice Age, there was acid rain.

Researchers in India point out that acid rain was certainly a major environmental concern for North America and Western Europe during 1970s, but mitigation efforts such as the addition of sulfur scrubbers to coal-fired power stations and catalytic converters to remove acidic nitrogen oxides from vehicle exhausts, reduced significantly the amount of sulfur compounds entering the atmosphere to create the corrosive rain. Today, the chattering classes are more likely to be concerned about the sulfites in their cheap wine than sulfuric and nitric acid destroying the trees in their gardens. But, while the “West” has all but forgotten acid rain and the majority presumably assume it is no longer an issue, in the developing world acid rain is, unfortunately, alive and well and wreaking havoc year on year.

S.A. Abbasi of the Centre for Pollution Control and Environmental Engineering at Pondicherry University, India and colleagues have reviewed current understanding of the evolution of acid rain, its eradication in some parts of the world and how its emergence in the developing world, particularly the so-called BRIC nations (Brazil, Russia, India and China) will inevitably have a detrimental effect on the whole world.

Their review leads to three important conclusions concerning acid rain:

  1. Acid rain is a slow-acting scourge – its impacts are not dramatically evident over a short timespan unless, in exceptional cases, the acidification of the rain has taken place suddenly and sharply.
  2. Some regions feel the impact of acid rain more readily than others and this essentially depends on the availability, or the lack of, acid-neutralising dust/soil/water in the region.
  3. It is simplistic to believe that if in a particular region acidification of rain is not presently causing proportional acidification of receiving water and soil, this shall continue to be so indefinitely. If not checked, acid rain would gradually wear down the acid-assimilative capacity of the receiving environments.

“Acid rain and its effects will not go away overnight. Increasing public awareness of the problem is the first step towards finding some of the solutions. The cost of control versus the cost of damage must be considered while evaluating the merit of any management alternative. Given the fact that past studies has indicated that the benefits of acid rain control easily outweigh the costs, it is a problem not without hope,” the team concludes.

Research Blogging Icon Abbasi T. (2013). Acid rain: past, present, and future, International Journal of Environmental Engineering, 5 (3) 229-272. DOI:

Oh and that nostalgic video?

Ante-papal smoke signals

Papal statue plays air guitarPhilip Ball, writing on the BBC Future site discusses the carcinogens and poisons pumped into the Roman air every time the cardinals vote on a new Pope…

But, he also reckons the The Vatican is missing a trick by being unimaginatively monochrome.

“Why stop at a mere two-colour signalling system? The lurid rainbow smokes used in aerial displays like those of the Red Arrows are simply tinted with bright pigments and dyes such as indigo and rhodamine. Couldn’t we have beige smoke to denote a coffee break, amber to signal an impending decision, and burgundy to show that they’re celebrating it afterwards?”

BBC – Future.

By the way, why is their a papal statue in The Vatican playing air guitar on the roof?

Animated rock art

Some of the world’s oldest engravings of the human form – prehistoric rock art from the Italian Alps – have been brought to life. PITOTI is an innovative research project that applies insights from the new technologies of computer graphics to prehistoric pictures, specifically the rock art of Valcamonica, Italy, a UNESCO World Heritage Site. It brings to life some of the earliest human figures in European rock art — some made from as early as 7,000 BC — with interactive graphics, 3D printing and video games, exploring the potential links between the world of archaeology and the world of film, digital humanities and computer vision.

A multimedia digital rock art exhibition with video projections, an ambient cinema and an interactive touch screen table is on display at the Museum of Archaeology and Anthropology, Cambridge, 7-23 March 2013.

Molecular Logic

molecular-logic-based-computationI first wrote about the pioneering work of Prasanna de Silva – AP to his friends and colleagues – back in the early 1990s in publications such as New Scientist, Science and others. It really was pioneering, he and his team at Queen’s University Belfast were starting to find ways to build molecules, that could substitute for the logic functions usually the preserve of silicon chips. They created molecular logic units for the Boolean operators – the AND, OR, NAND, NOR, XOR, INHIBIT etc etc.

From the book description: “We all learn – in schools, factories, bars and streets. We gather, store, process and transmit information in society. Molecular systems involved in our senses and within our brains allow all this to happen and molecular systems allow living things of all kinds to handle information for the purpose of survival and growth. Nevertheless, the vital link between molecules and computation was not generally appreciated until a few decades ago.”

The field of molecular logic and computation has not yet reached the age of majority but it is growing fast and strong. There is no other book around that can provide the comprehensive background and insights AP offers in this monograph from the RSC.

“This book is an authoritative, state of the art, reference and a ‘one-stop-shop’ concerning the current state of the field for scientists, academics and postgraduate students.”

Molecular Logic-based Computation Monographs in Supramolecular Chemistry: A. Prasanna de Silva.