Mostrando entradas con la etiqueta Investigación científica. Mostrar todas las entradas
Mostrando entradas con la etiqueta Investigación científica. Mostrar todas las entradas

martes, 19 de junio de 2012

Report calls on government to back open access science

ORIGINAL: BBC
By Pallab Ghosh Science correspondent, BBC News

Currently the results of publicly funded research are restricted and have to be paid for
A group of experts has urged funders of UK research to encourage scientists to publish their results in journals that offer free public access to findings.

A report by Dame Janet Finch argues that there is a powerful "moral" case for publicly funded research to be freely available.

Dame Janet also states that there could be considerable economic benefits if industry has free access to research.

Currently, most results have to be paid for by subscription.

But supporters of commercial publishing say that they have contributed greatly to the development of the peer review system and the resulting high standard of scientific research.

According to Dame Janet, "everyone agrees that greater open access would bring huge economic and public benefits. The challenge though is how we move to this model without damaging UK research, peer review or scientific publishers?"

Historically, scientists have sent their research results to scientific journals for consideration for publication.

Specialist editors working for the journals sift through the material submitted to them and select those they feel have made a significant contribution to the field.

“The long term future lies with open access”
Dame Janet FinchReport Author

The editors then send these scientific papers to experts in the field for assessment, a process known as peer review. It is at this stage that one or more of the experts can reject the research because they believe it is flawed or that it has not made a significant contribution to the field.

It is more often the case though that the expert reviewers, known as referees, ask for clarification or more experiments to be carried out.

Once all or most of the referees are satisfied, the journal publishes the research and it is at this stage that the work is formally considered to be new science.

This process is in the main carried out by commercially-owned academic publishers who charge a subscription for access to the research. Two of the world's leading journals, Nature and Science, require subscriptions.
Critics allege that commercial publishers have made excessive profits from publicly funded research 

Critics have argued that commercial publishers have made excessive profits from scientific research that has been paid for from public money. Critics also say that denying access to publicly-funded research is immoral.

This sort of criticism has seen the emergence of a new model of scientific publishing called open access. In this model, the author - or more likely their institution or funding body - pays for the administrative costs of peer review and the published research is made freely available to all.

The issue has become more acute in recent years with all research papers now potentially available online. Most commercial publishers have a "pay-wall" requiring a fee before allowing access to the research material.

Last year the Science Minister David Willetts set up an independent working group led by Dame Janet Finch of Manchester University to examine how to expand access to the peer-reviewed publications that arise from research undertaken both in the UK and in the rest of the world.

Bob Campbell, a senior publisher at Wiley-Blackwell, said that he saw a cointinued role for commercial publishers, but that there would be a move towards some form of open access in their models.

Measured way

The report's conclusion is that the government should encourage research funders, scientists and journal publishers to back the open access model playing an increasingly important role in scientific publishing.

Although open access journals currently account for just 10% of published research it is an area that Dame Finch wants to see expanding rapidly.

“Open access is is in our marrow. Greater access is for the greater good”
Professor Adam TickelBirmingham University

"The long term future lies with open access," she said at a news conference to launch her report.

"It will continue to grow fast. We need to embrace this change and do so in a measured way.

One of Dame Janet's recommendations is to require the funders of research to set aside £60 million each year to pay the administrative fees for publication in open access publications.

Mr Willetts said he would give a formal government response after he had a chance to properly consider the report.

But after an initial reading he said it seemed to have struck a "sensible balance in safeguarding the very important role of academic publishers while finding a way to manage the change to an environment that is more dominated by open access".

Many scientists are strong supporters of open access publishing. Among them is Prof Elizabeth Fisher, a world class neuroscientist at University College London.

"At my institution we are lucky enough to have access to many journals. But inevitably myself or one of my colleagues occasionally needs to see something that we haven't subscribed to and so we have to pay a fee to see research that has been publicly funded.

"So it would be tremendously useful for our research if we didn't have to think twice about this sort of thing".

Professor Adam Tickell, pro-vice-chancellor for research and knowledge transfer at the University of Birmingham said that universities were hugely supportive of the move toward the new model of scientific publishing.

"Open access is is in our marrow," he said, "greater access is for the greater good".

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martes, 22 de mayo de 2012

The Scandal of Closed Access to Taxpayer Funded Research

ORIGINAL: Samirchopra

On January 21, Timothy Gowers of Cambridge announced he would no longer publish papers in Elsevier’s journals or serve as a referee or editor for them. This boycott has now been joined by thousands of other researchers. (I don’t referee any more for Elsevier, though I have in the past, and I certainly won’t be sending any papers there.) Thanks to the furore created by three Fields Medal winners–Timothy Gowers, Terence Tao, Wendelin Werner–participating in the boycott, many now know what academics have known for a very long time: academic publishing is a scandal. Indeed, it is more than a scandal; it is a racket which is nothing short of criminal. Before we go any further, here is a number to chew on: in 2010, ‘Elsevier reported a 36 percent profit on revenues of $3.2 billion.’

How does this system work? Consider this. Elsevier, or for that matter, any journal publishing house, publishes ‘content.’ Academic content, the results of research conducted by university academics the world over; much of this research is funded by taxpayer money. This research is written up in papers, and sent to journal editorial boards for review. These boards are staffed by unpaid academics, who, after preliminary review, send out papers to be reviewed by other unpaid academics. (When I say ‘unpaid,’ I mean they are not compensated by the journals for their work.) The paper, if accepted by the referee and the editor, is then sent back to the authors who typesets it, prepares a camera-ready copy, and sends it back for publishing. The publishing house, after making authors sign forms handing over copyright to them, then prints the article in the latest issue of the relevant journal, and sells subscriptions to that journal for thousands of dollars per year to libraries at the same universities where their editorial board and reviewing staff work.

So, this material is not open-access any more; it is closed behind a ‘pay-wall.’ If you don’t have a paid subscription, you don’t get to view the published research. If your library, at say, a public university like the City University of New York, is experiencing budget problems, and library funding suffers cutbacks, well, tough tits. You don’t get to view the published research. If you, as a professor, or graduate student, decided to freely distribute the papers, you may be embroiled in copyright infringement disputes. If you are a taxpayer that funded this research, but cannot afford the journal subscription, well, tough tits again. Go rustle up the bucks. Knowledge should be open and available to all, you say? Talk to my accountant; because the face, it ain’t listening.

This is a gigantic rip-off, a racket, a robbery. It is exploitation–primarily of the academic promotion and tenure process and taxpayer money–on a scale that beggars belief. The stench from this should make every thinking person hold his or her nose. And act to make sure this cannot persist.

Right now, the US House and Senate are considering the Federal Research Public Access Act; this will bring about ‘pervasive open access,’ especially to articles reporting on research paid for by taxpayers. For your own sake and for the sake of researchers, students, teachers, doctors, and the like everywhere, please support it. A ‘We the People’ petition is up and available for signing at whitehouse.gov. Please sign, spread the word, and end this racket.

viernes, 20 de abril de 2012

Gran minería transnacional está saqueando a los países, generando graves costos socioambientales, dice coordinador de RECLAME de Colombia

Jueves, 19 de Abril de 2012
Por Fernando Arellano Ortiz


Para el analista económico y docente universitario Mario Alejandro Valencia, coordinador de la Red Colombiana Frente a la Gran Minería Transnacional (RECLAME), “la fiebre minera” que se está dando en varios países latinoamericanos no ha hecho esperar a los inversionistas extranjeros.

“Sobre la minería en Colombia, y en general sobre América Latina, se ha producido en los últimos años uno de los mayores negocios de especulación financiera del mundo. Tras la debacle de 2008 se convirtió en uno de los commodities más atractivos para el capital financiero global, y entre más se profundiza la crisis más se incrementa al auge minero”, sostuvo Valencia, quien fue uno de los coordinadores del panel que trató este tema en la Cumbre de los Pueblos en Cartagena de Indias.

Lo más grave, afirma, es que las empresas transnacionales dedicadas a la minería a cielo abierto terminan saqueando a los países generando unos graves costos socioambientales, sin nada a cambio.

“Es el premio de montaña del neoliberalismo”, después de que buena parte de las naciones de América Latina privatizaron la salud, la educación las telecomunicaciones y otros servicios públicos, ahora algunos gobiernos neoliberales de la región entregan lo que falta, los recursos naturales para que las transnacionales con su voracidad característica no solo los exploten al máximo sino que ocasionan daños ambientales y sociales irreparables, dice el analista.

La entrevista con Mario Alejandro Valencia, en el siguiente video:

viernes, 9 de marzo de 2012

Nueva técnica para visualizar la estructura radicular de vegetales para optimizar cultivos y productividad

ORIGINAL: CORDIS
Fecha: 2012-03-07


Foto: Shuttershock
Investigadores de la Universidad de Nottingham (Reino Unido) han diseñado una técnica innovadora que permite estudiar las raíces de las plantas. Los resultados de su trabajo, publicados en la revista Plant Physiology, darán lugar a mejores técnicas de fitogenética con las que obtener nuevas variedades de cultivos y mayores tasas de productividad. 

Este nuevo método está basado en la misma tecnología de rayos X que se emplea en las exploraciones de tomografía computarizada (TAC) habituales en hospitales. Integra un nuevo software de análisis de imagen que permite distinguir automáticamente entre las raíces de plantas y otros materiales del suelo. 

Los investigadores, pertenecientes al Centro de Biología Integrativa Vegetal (CPIB, Reino Unido), probaron la técnica en raíces de plantas del maíz, el trigo y el tomate. Con ella estudiaron la arquitectura (es decir, la forma y el patrón de ramificación) de las raíces en el subsuelo empleando tomografía computarizada de rayos X a microescala (micro-TAC). Seguidamente, introdujeron la información obtenida en el programa de nueva factura RooTrak, con el que pudieron diferenciar entre raíces y otros elementos del suelo. 

«Esta técnica representa un avance de suma importancia», aseguró el Dr. Sacha Mooney, experto en física del suelo de la Facultad de Biociencias de la Universidad de Nottingham (Reino Unido). «El uso del TAC de rayos X para visualizar raíces ha sido limitado porque, sencillamente, no podía verse una gran parte de la estructura radicular. RooTrak nos ha permitido superar esta deficiencia y abre la posibilidad de aprovechar esta tecnología para indagar en formas de manipular plantas y suelos y así aumentar la seguridad alimentaria.» 

Este innovador programa informático obtiene una serie de cortes transversales virtuales del suelo en el que se alojan las raíces. Según informaron los investigadores, RooTrak trata cada corte transversal como si de un fotograma cinematográfico se tratase. Las raíces que aparecen en cada fotograma se tratan como objetos en movimiento que pueden rastrearse. El software distingue entre raíz, agua y elementos orgánicos del suelo, solucionando así inconvenientes de otras técnicas. Esta nueva técnica muestra la arquitectura de las raíces de manera detallada y precisa y en tres dimensiones. 

«El tratamiento de los datos del micro-TAC como una secuencia de imágenes resuelve los problemas causados por las variaciones que se dan en la apariencia de las raíces vegetales y por la similitud de algunas raíces con el suelo que las rodea», aclaró Tony Pridmore, responsable de información del CPIB y especialista en software de rastreo y análisis. «Es un logro importante porque permite extraer descripciones de la arquitectura radicular de manera rápida y objetiva.» 

El profesor Malcolm Bennet, también del CPIB, especialista en biología radicular, añadió: «La arquitectura de la raíz influye de manera determinante en la absorción de agua y nutrientes. Un impedimento crucial para el análisis genético de la arquitectura radicular de los cultivos era la incapacidad de obtener imágenes de las raíces en vivo. Pero ahora esto es posible gracias a los recientes avances en micro-TAC y al software RooTrak logrados en la Universidad de Nottingham.» 

El equipo de esta universidad recibió una subvención para investigadores avanzados (Advanced Investigator Grant) del Consejo Europeo de Investigación (CEI) por valor de 3,5 millones de euros al amparo del Séptimo Programa Marco (7PM) de la UE. Próximamente este software y una innovadora técnica de imagen basada en micro-TAC se aplicarán para obtener imágenes de las raíces del trigo y seleccionar nuevas variedades que presentan eficiencias óptimas en la absorción del agua y los nutrientes. 

El nuevo proyecto será dirigido por el CPIB y contará con el concurso de especialistas de Australia, Europa y México.

Para más información, consulte: 

Centre for Plant Integrative Biology (CPIB): 

Plant Physiology: 

Consejo Europeo de Investigación (CEI): 

Categoría: Varios
Fuente: Centre for Plant Integrative Biology (CPIB)
Documento de Referencia: Mairhofer, S. et al., RooTrak: Automated Recovery of Three-Dimensional Plant Root Architecture in Soil from X-Ray Microcomputed Tomography Images Using Visual Tracking, Plant Physiology, 2012.
Códigos de Clasificación por Materias: Agricultura; Coordinación, Cooperación; Alimentación; Ciencias de la vida; Investigación científica

RCN: 34377