Alternativas: impresión 3D, hardware libre drones y otras tecnologías.
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Alternativas: impresión 3D, hardware libre drones y otras tecnologías.
La tecnología cambia la economía, y ambas la sociedad. Impresión 3D, Hardware libre y otras cosas.
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A New Industrial RepRap Emerges - Fabbaloo Blog - Fabbaloo - Daily News on 3D Printing

A New Industrial RepRap Emerges - Fabbaloo Blog - Fabbaloo - Daily News on 3D Printing | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
Designed by brothers Jonas and Simon Kühling, the Kühling&Kühling...
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The MakerBot Digitizer Desktop 3D Scanner - Fabbaloo Blog - Fabbaloo - Daily News on 3D Printing

The MakerBot Digitizer Desktop 3D Scanner - Fabbaloo Blog - Fabbaloo - Daily News on 3D Printing | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
MakerBot announced, but did not release, a personal 3D scanner at SXSW yesterday that could dram...
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How To Start Mining Bitcoins And Earning Real Money - Business Insider

How To Start Mining Bitcoins And Earning Real Money - Business Insider | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

It's something akin to prospecting for gold, except now you're hunting for 64-digit numbers. By having your computer repeatedly solve puzzles, you're competing with other miners to generate the number that the Bitcoin network is looking for. If your computer generates it, you receive 25 Bitcoins.

 




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Inside 3D Printing

Inside 3D Printing | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

The 3D printing revolution has arrived and Inside 3D Printing is the first business to business conference and expo to delve into the present and future impact of 3D printing. Join us on April 22-23 in New York City, and immerse yourself in two full days of tutorials and seminars that will give you a blueprint for how to invest and utilize 3D printing in coming years. And, you will not want to miss the exhibition hall packed with the latest 3D printers and services. Be a part of this cutting-edge event!


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ManufacturingStories's curator insight, March 7, 2013 9:08 AM

A great chance to learn and see what's going on in this rapidly growing DIY & Industrial Technology

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3D-Printed Bat Wing May Guide the Future of Aircraft Design

3D-Printed Bat Wing May Guide the Future of Aircraft Design | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

"Unlike most aircraft, a bat’s wing is in constant motion when in flight. Researchers at Brown University are looking to this motion to influence the future of aircraft design.

To better understand how the bat’s wing moves, members of the Brown Swartz Lab have 3D printed a model of the lesser dog faced fruit bat’s wing and added a force transducer to its base. When placed inside a wind tunnel, the robot’s three servo motors control the model’s seven joints and the transducer records the aerodynamic forces acting on the wing."

 


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Meet Bitcoin, the World’s Best Performing Currency - Emerging Markets Daily - Barrons.com

Meet Bitcoin, the World’s Best Performing Currency - Emerging Markets Daily - Barrons.com | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
The best performing currency this year? No it’s not the Seychellois rupee (+8.07%), Paraguay’s guarani (+5.24%) or Brazil’s real (+4.45%). It’s bitcoin, the online, open source currency, which has gained nearly 200% so far this year.

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Levantarse con el chip quincemero cambiado después de cagarla

Levantarse con el chip quincemero cambiado después de cagarla | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
El título no me ha quedado muy fino, pero está claro qué dice y a quién.
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Replicator 2 Extruder Alternative: Some Spring In Your Step

Replicator 2 Extruder Alternative: Some Spring In Your Step | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
The way that the MakerBot Extruder works out of the box is that there is a plunger that pushes the filament against the drive gear. We?

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10 Ways 3D Printing Can Be Used In Education [Infographic]

10 Ways 3D Printing Can Be Used In Education [Infographic] | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
10 Ways 3D Printing Can Be Used In Education [Infographic]

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3D printing is helping Nike build the ideal football cleat

3D printing is helping Nike build the ideal football cleat | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
Nike has discovered the rapid prototyping power of 3D printing, and it could change sneakers forever.

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What Is Open Source Hardware?

This video describes the attributes of open source hardware to the general public. This video is officially released by the Open Source Hardware Association. Please share this video!


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An industrial RepRap

An industrial RepRap | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
It may just be another 3D printer, but [Jonas] and [Simon]‘s Kühling & Kühling RepRap Industrial is a cross between a work of art and a beautiful machine tool. It also looks to be a pretty nice 3D printer, to boot.

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Value from nothing – the sharing economy | Flip the Media

Value from nothing – the sharing economy | Flip the Media | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
The Sharing Economy by Patrick Doherty AirBnb, etsy and Relay Rides are the current poster children of the sharing economy. If you don't know what that is, it's also called collaborative consumption or peer-to-peer selling.

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Open-Sourcing Outer Space: 3-D Printing Meets Rocket Science - Wired (blog)

Open-Sourcing Outer Space: 3-D Printing Meets Rocket Science - Wired (blog) | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

As in many other fields, 3-D printing is the latest DIY obsession in space, with people looking to print everything from moon bases to astronaut meals. The 3D Rocket Engine Design Challenge asks competitors to envision an engine capable of sending a small payload, like a 10-kg nanosat, into orbit. Designers will work in an online environment called Sunglass and can collaborate with others around the world. The plan is to print the projects in a stainless steel 3-D printer, and the top three designs will share $10,000 in prizes. The competition will officially open at SXSW on Mar. 9.


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7 Healthcare Ideas for Google Glasses

7 Healthcare Ideas for Google Glasses | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

Overlay EMR information during primary care examinations including labs, blood pressure, previous illnesses, or surgeries based on the location that the doctor is looking at – arm, leg, head or torso. In the emergency department, pull up potential patient records for a match including accessing a Health Information Network.


Present secure EMR information that requires privacy for the patient including behavioral health, addiction or HIV without computer monitors or paper that are less secure.


Overlay benchmarks or trends in patient medical test results including blood glucoses levels, cholesterol, PSA or maybe only show lab values that are out of range from normal. Even better, use predictive analytics to project future health status based on the trends.


Present inventories of supplies or locations of key medical equipment by looking at a cabinet or drawer location. Show inventories of trial medications for the indicated patient condition.


List treatment options for identified medical conditions and/or a personalized medical plan based on best practices. Provide analytics on the successful outcomes for various treatment options to discuss with the patient.


Search medical literature or best practices while the physician is examining the patient chart by focusing on key words or phrases, or provide medical vocabularies to guide the search.


Enable first responders to access step-by-step instructions for first aid and doctor guided instructions for critical situations.


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World's first 3D-printed car will move from 3D printer to road soon

World's first 3D-printed car will move from 3D printer to road soon | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

An engineer named Jim Kor is printing, as in building, a car. The Winnipeg, Manitoba, car visionary is responsible for the Urbee 2, being readied for the road, intended eventually as an about-town car, with three wheels, and built for two passengers. It looks like a big, shiny red bug cruising down the road. Interest grows in its means of production and implications for car manufacturing in the future.

If printing cars develop, conventional manufacturing plants might operate aside very small "cottage" plants deploying lights-out manufacturing. Kor's company, Kor Ecologic, is responsible for the Urbee 2, described as strong as steel yet lightweight. (The motto for the company is "Reasonable Design.") By using 3-D printing, there is a special focus on lightness but strength; he is creating large pieces with varied thicknesses. The Urbee's car body will be assembled from about 50 separate parts. The team's practice is to take small part from a big car and make them into single large pieces. The less pieces, the less car weight. The lighter the car, the more miles per gallon. The less spaces between parts and the Urbee becomes the more aerodynamic. The teardrop-shaped car has a curb weight of 1,200 pounds. The bumper, which is made in two pieces, required 300 hours to finish. The entire car takes about 2,500 hours.

The printing process to make the car is called Fused Deposition Modeling. (FDM), where one lays down thin layers (0.04 mm) of melted plastic filament. The FDM approach enables tight control by the designer, who is able to add thickness and rigidity to special sections. Kor likes to compare the fender of a future Urbee with a bird bone. As shown in a cross section of a bird bone, he said there is bone only where the bird needs strength, and the FDM process can replicate a bird bone.


Kor has been printing the body pieces at RedEye, a business unit of Stratasys, which uses 3-D printers to produce on-demand parts and prototypes. Kor Ecologic has drawn up specific design ideals that are applied to the Urbee car project..A few of them are highlighted here. "Use the least amount of energy possible for every kilometer traveled. Cause as little pollution as possible during manufacturing, operation and recycling of the car. Use materials available as close as possible to where the car is built. Use materials that can be recycled again and again….


Be simple to understand, build, and repair. Be as safe as possible to drive. Be affordable." Kor does not have a high-priced toy in mind but rather an economy car. He has received orders for 14 cars. Most of the orders are from those involved in designing the car. Kor is presently planning to make one car and to drive it, when it is ready, with a partner, from San Francisco to New York City. They hope to do it on ten gallons of gas; Kor would prefer to use pure ethanol. They will try to prove without argument that they did the drive with existing traffic.


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Finally, a machine that makes cheap 3D printer filament.

Finally, a machine that makes cheap 3D printer filament. | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
If there’s one problem with the RepRap, it’s the cost of filament. Sure, there’s also the computationally difficult problem of slicing 3D models, but a 5 to 10 times markup on turning plastic pellets into filament is the biggest problem.

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Smoothing 3D prints with acetone and without patent violations

Smoothing 3D prints with acetone and without patent violations | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
Austin Wilson and Neil Underwood from the North Carolina makerspace Fablocker invented a great, simple process for smoothing out 3D prints using evaporated nail-polish remover in a large jar.

Via Pierre Tran, Anne-Laure Prunier
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CeBIT 2013 quiere cambiar el mundo desde la palma de la mano

CeBIT 2013 quiere cambiar el mundo desde la palma de la mano | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it
Una impresora de objetos en tres dimensiones y una aplicación que convierte tu smartphone en una llave capaz de abrirlo todo –y cuando decimos todo, es todo- son ejemplos de algunas de las novedades que se presentan en CeBIT 2013, que ha arrancado...

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Scientists increase lithium-sulfur battery lifetime by a factor of 10

Scientists increase lithium-sulfur battery lifetime by a factor of 10 | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

The world of rechargeable batteries is full of trade-offs. While lithium-ion (Li-ion) batteries are currently the most commercially successful, their low energy density doesn't allow for a long driving range. They are also very expensive, often accounting for half the price of electric vehicles. One alternative is lithium-sulfur (Li-S) batteries, which are attractive for their high gravimetric energy density that allows them to store more energy than Li-ion batteries. And although they still use some lithium, the sulfur component allows them to be much cheaper than Li-ion batteries. But one of the biggest drawbacks of Li-S batteries is their short cycle life, which causes them to lose much of their capacity every time they are recharged.

Now a team of researchers led by Yi Cui, a professor of materials science and engineering at Stanford University, has developed a Li-S battery that can retain more than 80% of its 1180 mAh/g capacity over 300 cycles, with the potential for similar capacity retention over thousands of cycles. In contrast, most Li-S batteries lose much of their capacity after a few tens of cycles. To achieve this improvement, the researchers first identified a new mechanism that causes capacity decay in Li-S batteries after cycling. In order for a Li-S battery to successfully recharge, the lithium sulfide in the cathode must be bound to the cathode surface—in this case, the inner surface of the hollow carbon nanofiber that encapsulates it. This binding creates a good electrical contact to allow for charge flow. But the researchers found that, during the discharge process, the lithium sulfide detaches from the carbon, resulting in a loss of electrical contact that prevents the battery from fully recharging.

 

After identifying the problem, the researchers set about fixing it by adding polymers to the carbon nanofiber surface in order to modify the carbon-sulfur interface. The polymers are amphiphilic, meaning they are both hydrophilic (water-loving) and lipophilic (fat-loving), similar to soap. This property gives the polymers anchoring points that allow the lithium sulfides to bind strongly with the carbon surface in order to maintain strong electrical contacts. As experiments showed, sulfur cathodes containing the amphiphilic polymers had very stable performance, with less than 3% capacity decay over the first 100 cycles, and less than 20% decay for more than 300 cycles. Although the improvement is a big step forward, the capacity retention still doesn't compare to Li-ion batteries, some of which have lifespans approaching 10,000 cycles. In order to avoid having to replace the battery every few years, electric vehicles require these longer lifespans. But Cui says that Li-S batteries have the potential to close this gap in the foreseeable future. "Using the amphiphilic polymer idea here in this paper, together with nanoscale materials design and synthesis, it is possible to improve the cycle life up to 10,000 cycles," Cui told Phys.org. "My group is working on this. Our recent results on nanomaterials design already improved to 1000 cycles." In the future, Cui think Li-S batteries will give Li-ion batteries some serious competition. "The Li-S batteries become pretty promising for electric vehicles," he said. "The life cycle needs to improve further. The lithium metal anodes' safety problem needs to be solved. It is possible to get around Li metal anodes with Si anodes."


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Dan Aldridge's curator insight, March 5, 2013 9:56 AM

Very encouraging news about improved lithium-sulfur batteries. Maybe Boeing should investigate for the Dreamliner!

Mercor's curator insight, March 5, 2013 10:31 AM

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3-D Printed Car Is as Strong as Steel, Half the Weight, and Nearing Production | Autopia | Wired.com

3-D Printed Car Is as Strong as Steel, Half the Weight, and Nearing Production | Autopia | Wired.com | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

Kor and his team built the three-wheel, two-passenger vehicle at RedEye, an on-demand 3-D printing facility. The printers he uses create ABS plastic via Fused Deposition Modeling (FDM). The printer sprays molten polymer to build the chassis layer by microscopic layer until it arrives at the complete object. The machines are so automated that the building process they perform is known as “lights out” construction, meaning Kor uploads the design for a bumper, walk away, shut off the lights and leaves. A few hundred hours later, he’s got a bumper. The whole car – which is about 10 feet long – takes about 2,500 hours.


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Your phone will know you're sick before you do

Your phone will know you're sick before you do | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

In the not-too-distant future, you'll receive a full diagnosis and cure from your smartphone before you have even realized you're unwell. While this may seem like science fiction, it's on the cusp of becoming a reality. Digital is set to embark on a path of radical transformation in the health and wellness sector and in doing so it will help us to overcome some of the most significant challenges we face in health care.

 

We have an aging society and as elderly people account for a larger share of the population, the prevalence of long-term health problems will increase. This will cause a bigger cost burden and pressure health systems to accommodate an aging workforce.

 

Furthermore, lifestyle-related chronic health problems, including obesity and diabetes, are on the rise with dramatic implications for health service budgets. The cost of supporting these demographic trends is unsustainable but digital services are likely to be part of the solution society is looking for.


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El síndrome de la sobrecarga emocional

El síndrome de la sobrecarga emocional | Alternativas: impresión 3D, hardware libre drones y otras tecnologías. | Scoop.it

Tensión al interactuar con otras personas, una fase avanzada de estrés laboral, desgana, frustración, desilusión, dificultad para integrarse adecuadamente al entorno laboral, agotamiento emocional, falta de realización personal baja autoestima personal, son algunos de los síntomas que manifiestan las personas afectadas por el síndrome de Burnout o el "síndrome de estar quemado" como se conoce popularmente.

 

Se trata de un síndrome clínico descrito en 1974 por Freudemberg, psiquiatra, quién observó que al año de trabajar, la mayoría de las personas sufría una progresiva pérdida de energía, hasta llegar al agotamiento y la depresión, así como desmotivación en su trabajo. Al mismo tiempo la psicóloga social Cristina Maslach estudió las respuestas emocionales de los profesionales y los calificó de "sobrecarga emocional" o síndrome del Burnout o quemado. 

 

Este síndrome acumula respuestas a situaciones de estrés que provocan tensión al interactuar con otras personas, puede llegar a causar incapacidad total para volver a trabajar. Los profesionales más afectados con este síndrome son los médicos, pero todos los demás pueden ser víctimas ya que los cambios de horario, las largas jornadas de trabajo, el involucrarse en los problemas de las otras personas, la falta de tiempo, afecta a gran cantidad de personas en distintos trabajos.

 

 Algunos de los síntomas que podemos destacar son: agotamiento emocional disminución y pérdida de recursos emocionales, la persona se vuelve menos sensible con las demás personas y muy duro consigo mismo. Despersonalización o deshumanización, consistente en el desarrollo de actitudes negativas, de insensibilidad y de cinismo hacia las personas. Falta de realización personal, con tendencias a evaluar el propio trabajo de forma negativa, siente insuficiencia profesional y baja autoestima personal.

 

Síntomas físicos de estrés, como cansancio y malestar general.  En cuanto a las manifestaciones físicas puedes identificas: dolor de cabeza, insomnio, alteraciones gastrointestinales, taquicardia, sudoración, caída del cabello, entre otros. 

 

 Entre las manifestaciones de conducta observamos: predominio de conductas adictivas y esquivas, consumo significativo de café, alcohol, fármacos y drogas ilegales, ausentismo laboral, bajo rendimiento personal, distanciamiento afectivo, frecuentes conflictos interpersonales en el ámbito del trabajo y dentro de la propia familia.

 

  También debemos observar algunas manifestaciones mentales o psicológicas: Sentimientos de vacío, agotamiento, fracaso, impotencia, baja autoestima y pobre realización personal. Es frecuente apreciar nerviosismo, inquietud, dificultad para la concentración y una baja tolerancia a la frustración.

 

 

 


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