Un extraño en tu hogar

Un extraño en tu hogar

Vivir con alguien que sufre algún tipo de trastorno mental es difícil. Ver como nuestro familiar, antes sano, tiene ahora dificultades para recordar cosas sencillas, no gusta a nadie.

El alzheimer es posiblemente una de las enfermedades más conocidas, pero hay otros trastornos menos frecuentes, que pueden llegar a sorprender al familiar que se encuentre con los síntomas sin conocer su origen.

Y dentro de estos, hay un grupo que tiene como punto común unos síntomas curiosos: el paciente cree que en su casa están viviendo extraños, ya sea de una forma oculta, o suplantando a alguno de sus antiguos familiares. Veamos tres de ellos.

El primero es el Síndrome o Mal de Capgras, donde el paciente cree que una persona allegada ha sido suplantada por un doble idéntico. Pensará que es el único que se ha percatado del problema (ya que nadie le dará la razón), y tratará de impostor al “extraño”.

Este mal es debido a un problema de conexión entre el reconocimiento visual y la memoria afectiva. Por ejemplo, si el enfermo cree que su tía es una doble, será porque la verá, la identificará como su tía, pero en cambio no tendrá los recuerdos que conllevan la parte emocional de una relación.

En el siguiente vídeo se puede ver de una forma clara de qué trata el problema. La primera parte es una situación ficticia, seguida de la explicación teórica.

Otro trastorno de síntomas parecidos es el Síndrome de Frégoli. En este caso, el paciente pensará que de alguna forma, un familiar o persona cercana es alguien distinto, aunque también allegado.

Es decir, que un enfermo con este síndrome podría suponer que su primo es en realidad un hermano que murió y ha ocupado su cuerpo.

Y por último tenemos el Síndrome del Huésped Fantasma. La persona que sufra este trastorno, pensará que su casa está ocupada por alguien que de alguna forma, consigue ocultarse para no dejarse ver.

Aún así, el enfermo tendrá la idea delirante de que detecta a su curioso ocupante, ya sea viendo su reflejo en un espejo, escuchando el televisor encendido…

Curiosas enfermedades que poco a poco, y gracias a los avances en neurociencia, van teniendo respuestas.

Syd Field

Dear Screenwriter,

I believe that filmmaking is in the middle of an evolution/revolution; and the change has taken place in the theatre of technology as the state of digital filmmaking has become more pronounced. This development has facilitated traditional as well as non-linear storytelling, making available countless new storytelling tools to screenwriters around the world. It is an inspiring and innovative time to be a screenwriter.

My books on screenwriting were inspired by the great French Film Director Jean Renoir's statement that a movie should be like an act of revolution. I feel the screenwriter should take responsibility for stimulating the audience into action; to think -- to feel -- to passionately inspire others.

And I truly believe that the mission of the young filmmaker is to pave the way for the future. All of us embody that future. We have the imagination, the tools, the skills, and we know the craft -- but do we have the courage and the strength to bring our own personal vision into the world?

Screenwriting is a craft that occasionally rises to the level of an art. It is my goal to help inspire screenwriters around the world to realize their vision. It is my mission, my passion.

Thank you for joining me on this exciting journey.

Sincerely,

SydField.com

Shoot-Through, Invisible, Self-Healing Shields: Darpa Goal

Danger Room

Invis_artic_2 Darpa, the Pentagon's wide-eyed research arm, is betting big on "metamaterials" -- composites that can seemingly-impossible new properties, thanks to their molecular structure. But even for Darpa, and even for metamaterials, this seems like a long shot: a $15 million program to build shoot-through, one-way-invisible, self-healing shields for soldiers in urban battlefields.

Metamaterials are already showing promise, as the building blocks to real-life invisibility cloaks; that's because the composites let electromagnetic waves flow around them, instead of reflecting 'em back. Darpa's "Asymmetric Materials for the Urban Battlespace" program goes way, way beyond mere invisibility, however.

"Asymmetric, or 'one-way,' materials will support basic unit operations such as raids, cordon and search activities, snap checkpoints, and fire fights," according to military budget documents. "Friendly forces will be able to see through [one of these new materials] and shoot through it, but hostile forces will not." Such shields will also have "the ability to 'self-heal' if necessary. The materials must be lightweight, respond instantly, and be easy to deploy and retract in confined spaces."

Darpa doesn't give much guidance on how this might be done. But the agency does offer a clue, buried in an earlier budget document: "Initial studies have shown optical analogs of secure digital communication hold great promise for providing a 'coded' obscurant system. The optical properties of obscurant can be tailored such that they develop transparency at narrow, tunable wavelengths. This narrow band optical bleaching phenomena could be realized through optical threshold sensitive switching materials akin to some developed for laser protection goggles."

Of course, producing stuff like this won't be easy, Darpa admits. There are "significant technical obstacles," the agency notes, including "the design and fabrication of composite or meta-materials with true one-way capabilities." Which is pretty much the whole program.

Laser-Guided Bullets: Pentagon Pursuit

Danger Room

American soldiers have been using laser scopes for a long time, to make their shots more accurate. But what if the bullets themselves were steered by lasers, and able to turn on a dime? That's the idea behind a new, $7.5 million Darpa initiative to be a "laser-guided bullet."

Bullet_from_revolver_1The Pentagon's way-out research agency has been working hard, lately, to figure out ways to make already-deadly snipers even more lethal -- designing scopes that automatically compensate for the elements, for instance.

Similarly, this precision-bullet push is meant to "significantly improve first shot effectiveness in engaging distant enemy forces," Pentagon budget documents promise. To make it happen, however, researchers will have to design whole "new guidance technologies, such as compact MEMS-based thrusters" and "initial side-thrust technologies with sufficient authority to move a projectile in flight." In addition, the ammo will need "high stress-tolerant electronics in the guided bullet and new compact targeting systems robust to field operations under a variety of conditions."

In 1998, a North Carolina inventor patented a laser-guided bullet design to do just that. Ammo-maker Alliant Techsystems was granted a patent last year for radar-directed bullets that promise "improved kills per round, with the potential for reducing the ammunition expended and time-loading on the fire control system and its guns."

At stake, of course, is more than just a few extra cases of ammo. It used to take a whole bunch of bombs -- causing a whole bunch of civilian casualties -- to knock out a single target. Then came the laser-guided munition. Aerial warfare became more precise. "Friendly fire" deaths and so-called "collateral damage" dropped, accordingly. Now, the Pentagon is looking to bring that kind of accuracy to all kinds of weapons, from artillery shells to mortars. Bullets could be the next step, some day.

The Futurist

The Futurist

"We know what we are, but we know not what we may become"
- William Shakespeare

Technovelgy

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Quantum information teleported from light to matter

Beaming people in Star Trek fashion is still in the realms of science fiction but physicists in Denmark have teleported information from light to matter bringing quantum communication and computing closer to reality.

Until now scientists have teleported similar objects such as light or single atoms over short distances from one spot to another in a split second.

But Professor Eugene Polzik and his team at the Niels Bohr Institute at Copenhagen University in Denmark have made a breakthrough by using both light and matter.

"It is one step further because for the first time it involves teleportation between light and matter, two different objects. One is the carrier of information and the other one is the storage medium," Polzik explained in an interview on Wednesday.

The experiment involved for the first time a macroscopic atomic object containing thousands of billions of atoms. They also teleported the information a distance of half a meter but believe it can be extended further.

"Teleportation between two single atoms had been done two years ago by two teams but this was done at a distance of a fraction of a millimeter," Polzik, of the Danish National Research Foundation Center for Quantum Optics, explained.

"Our method allows teleportation to be taken over longer distances because it involves light as the carrier of entanglement," he added.

Quantum entanglement involves entwining two or more particles without physical contact.

Although teleportation is associated with the science-fiction series Star Trek, no one is likely to be beamed anywhere soon.

But the achievement of Polzik's team, in collaboration with the theorist Ignacio Cirac of the Max Planck Institute for Quantum Optics in Garching, Germany, marks an advancement in the field of quantum information and computers, which could transmit and process information in a way that was impossible before.

"It is really about teleporting information from one site to another site. Quantum information is different from classical information in the sense that it cannot be measured. It has much higher information capacity and it cannot be eavesdropped on. The transmission of quantum information can be made unconditionally secure," said Polzik whose research is reported in the journal Nature.

Quantum computing requires manipulation of information contained in the quantum states, which include physical properties such as energy, motion and magnetic field, of the atoms.

"Creating entanglement is a very important step but there are two more steps at least to perform teleportation. We have succeeded in making all three steps -- that is entanglement, quantum measurement and quantum feedback," he added.