lunes, 28 de diciembre de 2009
sábado, 26 de diciembre de 2009
martes, 22 de diciembre de 2009
viernes, 11 de diciembre de 2009
viernes, 27 de noviembre de 2009
jueves, 19 de noviembre de 2009
martes, 17 de noviembre de 2009
Iniciando módulo MPA FATLA
;-)
sábado, 14 de noviembre de 2009
Diario Personal con Penzu - Realidad Aumentada - Árbol Genealógico
http://penzu.com
Realidad Aumentada con ATOMIC
http://www.sologicolibre.org/projects/atomic/es/index.php?page=Que+es+ATOMIC
Arbol Genealógico
https://www.geni.com/
http://www.genoom.com
viernes, 6 de noviembre de 2009
viernes, 30 de octubre de 2009
Go Animated - Audacity
jueves, 29 de octubre de 2009
Internet, 40 años conectando al mundo (BBC Mundo)
Internet, 40 años conectando al mundo
Para los años 70 el Arpanet ya era una red trascontinental.
La celebración de los 40 años del nacimiento de internet se llevara a cabo en la institución donde se originó el primer mensaje entre dos grupos de computadoras interconectadas: la Universidad de California en Los Ángeles (UCLA).
A las 21:00 (hora local) del 29 de octubre de 1969, ingenieros de UCLA y sus colegas en el Instituto de Investigación de la Universidad de Stanford -a 600 kilómetros de distancia- se aprestaban a enviar datos entre los primeros nodos de lo que por entonces se conocía como Arpanet.
El sistema fue inicialmente bautizado así porque había sido comisionado por la Agencia de Proyectos de Investigación Avanzada del Departamento de Defensa de EE.UU. (ARPA, por sus siglas en inglés).
En ese entonces las computadoras eran completamente incompatibles y trasferir datos era un proceso muy engorroso
Larry Roberts, pionero de la internet
Los primeros pasos de la naciente red fueron en realidad a gatas y no sin tropiezos.
Charley Kline, parte del equipo de investigadores, estaba intentando entrar o "logearse" remotamente desde UCLA a la computadora Scientific Data Systems que residía en Stanford.
Kline ingresó la letra "L" -la primera en la palabra "LOGIN"- y luego le preguntó por teléfono a su colega Bill Duvall en Stanford si la letra había llegado.
Sí había llegado.
Kline escribió una "O". Otra vez, Duvall respondió afirmativamente.
Pero cuando Kline tecleó la "G", Duvall sólo pudo contestarle que el sistema se había caído.
A pesar de ese primer traspié, lograron conectarse nuevamente a las 22:30 y todo salió bien. Desde entonces, la red casi nunca volvió a dar un paso en falso y el resto ha sido historia.
"Idea horrible"
Leonard Kleinrock conformó el equipo original de investigadores.
Sin embargo, la reacción inicial al sistema no fue muy positiva, como dijo a la BBC el doctor Larry Roberts, el científico del Instituto de Tecnología de Massachusetts (MIT, por sus siglas en inglés) que elaboró las especificaciones técnicas de Arpanet.
"Pensaron que se trataba de una idea horrible", expresó.
En realidad, Arpanet se comisionó para intentar resolver las exigencias de las instituciones de tener más potencia informática, ya que las máquinas se sobrecargaban de trabajo.
"En ese entonces, las computadoras eran completamente incompatibles y trasferir datos era un proceso muy engorroso", explicó Roberts.
Pero había mucha resistencia porque las instituciones querían mantener el control de sus recursos de computación. No obstante, pronto se dieron cuenta del extraordinario aumento de potencia que tenían al conectarse.
"Sabíamos que, si todos los bancos de datos podían vincularse, cambiaríamos la cara de la investigación, el desarrollo y los negocios", añadió.
clic Lea: EE.UU. compartirá el control de internet
La idea tecnológica fundamental que le permitía funcionar a Arpanet es conocida como conmutación de paquetes.
Este avance -que también tuvo su desarrollo en el Reino Unido- permitió el uso más eficiente, rápido y barato de líneas telefónicas para el envío de datos.
Las próximas décadas
Desde aquellos primeros pasos, Arpanet creció rápidamente y, en diciembre de 1969, ya tenía cuatro nodos.
Para 1972 contaba con 37 e inició el proceso de conectar redes entre sí. La red de redes, internet, se había desarrollado.
El doctor Roberts ha invertido la mayor parte de su vida en redes de computación y ahora dirige un proyecto de investigación que preparará a internet para sus próximos 40 años.
El trabajo se concentra en las maneras de mejorar la seguridad, fomentar el uso justo y equitativo para que nadie acapare su capacidad, y garantizar la calidad de conexión para el apoyo de aplicaciones extremadamente sensibles como la cirugía remota.
jueves, 1 de octubre de 2009
Nanotech's Next Development: Making Humans Immortal?
In 30 or 40 years, we'll have microscopic machines traveling through our bodies, repairing damaged cells and organs, effectively wiping out diseases. The nanotechnology will also be used to back up our memories and personalities.
In an interview with Computerworld , author and futurist Ray Kurzweil said that anyone alive come 2040 or 2050 could be close to immortal. The quickening advance of nanotechnology means that the human condition will shift into more of a collaboration of man and machine , as nanobots flow through human blood streams and eventually even replace biological blood, he added.
That may sound like something out of a sci-fi movie, but Kurzweil, a member of the Inventor's Hall of Fame and a recipient of the National Medal of Technology, says that research well underway today is leading to a time when a combination of nanotechnology and biotechnology will wipe out cancer, Alzheimer's disease , obesity and diabetes .
It'll also be a time when humans will augment their natural cognitive powers and add years to their lives, Kurzweil said.
"It's radical life extension," Kurzweil said . "The full realization of nanobots will basically eliminate biological disease and aging. I think we'll see widespread use in 20 years of [nanotech] devices that perform certain functions for us. In 30 or 40 years, we will overcome disease and aging. The nanobots will scout out organs and cells that need repairs and simply fix them. It will lead to profound extensions of our health and longevity."
Of course, people will still be struck by lightning or hit by a bus, but much more trauma will be repairable. If nanobots swim in, or even replace, biological blood, then wounds could be healed almost instantly. Limbs could be regrown. Backed up memories and personalities could be accessed after a head trauma.
Today, researchers at MIT already are using nanoparticles to deliver killer genes that battle late-stage cancer. The university reported just last month the nano-based treatment killed ovarian cancer, which is considered to be one of the most deadly cancers, in mice.
And earlier this year, scientists at the University of London reported using nanotechnology to blast cancer cells in mice with "tumor busting" genes, giving new hope to patients with inoperable tumors. So far, tests have shown that the new technique leaves healthy cells undamaged.
With this kind of work going on now, Kurzweil says that by 2024 we'll be adding a year to our life expectancy with every year that passes. "The sense of time will be running in and not running out," he added. "Within 15 years, we will reverse this loss of remaining life expectancy. We will be adding more time than is going by."
And in 35 to 40 years, we basically will be immortal, according to the man who wrote The Age of Spiritual Machines and The Singularity is Near: When Humans Transcend Biology .
Kurzweil also maintains that adding microscopic machines to our bodies won't make us any less human than we are today or were 500 years ago.
"The definition of human is that we are the species that goes beyond our limitations and changes who we are," he said. "If that wasn't the case, you and I wouldn't be around because at one point life expectancy was 23. We've extended ourselves in many ways. This is an extension of who we are. Ever since we picked up a stick to reach a higher branch, we've extended who we are through tools. It's the nature of human beings to change who we are."
But that doesn't mean there aren't parts of this future that don't worry him. With nanotechnology so advanced that it can travel through our bodies and affect great change on them, come dangers as well as benefits.
The nanobots, he explained, will be self-replicating and engineers will have to harness and contain that replication.
"You could have some self-replicating nanobot that could create copies of itself... and ultimately, within 90 replications, it could devour the body it's in or all humans if it becomes a non-biological plague," said Kurzweil. "Technology is not a utopia. It's a double-edged sword and always has been since we first had fire."
lunes, 28 de septiembre de 2009
Banking Trojan steals money from under your nose
Researchers at security firm Finjan have discovered details of a new type of banking Trojan horse that doesn't just steal your bank log-in credentials but actually steals money from your account while you are logged in and displays a fake balance.
The bank Trojan, dubbed URLZone, has features designed to thwart fraud detection systems which are triggered by unusual transactions, Yuval Ben-Itzhak, chief technology officer at Finjan, said in an interview Tuesday. For instance, the software is programmed to calculate on-the-fly how much money to steal from an account based on how much money is available.
It exploits a hole in Firefox, Internet Explorer 6, IE7, IE8, and Opera, and it is different from previously reported banking Trojans, said Ben-Itzhak. The Trojan runs an executable only on Windows systems, he said. The executable can come via a number of avenues, including malicious JavaScript or an Adobe PDF, he added.
The specific Trojan Finjan researchers analyzed targeted customers of unnamed German banks, according to the latest Finjan report. It was linked back to a command-and-control server in Ukraine that was used to send instructions to the Trojan software sitting inside infected PCs. Finjan has notified German law enforcement, Ben-Itzhak said.
"It's a next generation bank Trojan," he said. "This is part of a new trend of more sophisticated Trojans designed to evade antifraud systems."
Finjan researchers were able to trace the communications from the code on an infected machine back to the command-and-control server, which was left unsecured, according to Ben-Itzhak. On that server, they saw the LuckySploit administration console and were able to see exactly what types of rules the Trojan was written to follow and statistics on victims.
About 90,000 computers visited the sites housing the malware and 6,400 of them were infected, a 7.5 percent success rate, he said. Of those whose computers installed the Trojan, a few hundred had money stolen from their bank accounts, he said.
During the span of 22 days in mid-August, the criminals behind the Trojan stole the euro equivalent of nearly $438,000.