واحد مشترک کمکی پژوهش و مهندسی «هوش یار-تواندار» (HT-CSURE)

Hooshyar-Tavandar Common Subsidiary Unit for Research & Engineering

واحد مشترک کمکی پژوهش و مهندسی «هوش یار-تواندار» (HT-CSURE)

Hooshyar-Tavandar Common Subsidiary Unit for Research & Engineering

طراحی هواپیمای عمود پرواز با سرعتی ۳ برابر هلیکوپتر

(از سایت زومیت)


نویسنده: حسین خلیلی صفا جمعه, 24 مرداد 1393 ساعت 21:33 
هواپیمای عمود پرواز دانشگاه جورجیا
هواپیمای عمود پرواز دانشگاه جورجیا

تولید هواپیماهای عمود‌پرواز مفهوم چندان تازه‌ای نیست و کمپانی‌های تولیدکننده ی هواپیماهای نظامی پیش از این نیز نمونه‌هایی را با این توانایی، روانه‌ی بازار کرده‌اند. اما شاید هواپیمای طراحی شده توسط تیمی از دانشجویان فارغ‌التحصیل دانشگاه جورجیا شکل جدیدی از این نوع هواپیما را نمایش می‌دهد.

هرچند شاید این طرح در ابتدا کمی دور از واقعیت و نزدیک به هواپیماهای موجود در داستان‌های علمی تخیلی به‌نظر برسد، اما باید به این نکته اشاره کرد که این هواپیما با استفاده از پره‌های روی بال‌ها بصورت عمودی اوج گرفته و از روی زمین برمی‌خیزد و سرعت حرکت آن در مقایسه با هلیکوپترهای معمولی سه‌برابر است.

این طرح برنده‌ی جایزه‌ی رقابت سالیانه‌ی طراحی هلیکوپترهای آمریکا شده که بین دانشجویان برگزار می شود. در بروشور مربوط به این هواپیما کاربردهایی چون جستجو و نجات و استفاده توسط تیم‌های نجات در جریان رخ‌دادن بلایای طبیعی و جنگ‌ها، کاربری نظامی، استفاده در بیمارستان‌ها و همچنین انتقال بارهای سنگین وزن پیشنهاد داده شده است.

این هواپیما هنوز تولید نشده و به‌نظر نمی‌رسد برنامه‌ای نیز برای تولید آن در آینده‌ی نزدیک وجود داشته باشد. این مسابقه‌ی به‌منظور تشویق مهندسان به‌منظور مطالعه‌ی بیشتر روی امکان برخاستن و نشستن بصورت عمودی و توسعه‌ی سیستم‌عمود پرواز در هواپیماها برگزار شده است. از جمله‌ی قابلیت‌های چنین هواپیماهایی باید به مصرف انرژی کم، قابلیت پرواز با سرعتی بیش از هلیکوپترهای کنونی و همچنین قابلیت حمل میزان منطقی بار اشاره کرد. توسعه‌‌دهندگان این هواپیما دعا کرده‌اند که طرح توسعه داده شده توسط آن‌ها قادر است تا باری به وزن 790 کیلوگرم را حمل کند، در حالی که برخی از هلیکوپترها قادرند تا باری به وزن 2,260 کیلوگرم را نیز حمل کنند.

برندگان این رقابت، مبالغی را به‌عنوان جایزه دریافت کرده‌اند که این مبلغ در مجموع 10,000 دلار است. تصویر زیر مربوط به جایگاه اول دانشجویان در حال تحصیل است.

VerPlaveInt

برندگان این مسابقات به حال خود رها نشده و برای ادامه یافتن طراحی‌ها و همچنین بالا بردن کیفیت طراحی‌های بعدی توسط نهادهایی حمایت می‌شوند. حامی مالی مسابقات سال آتی نیز ارتش آمریکا خواهد بود.

Clearpath Pledges Not to Make Killer Robots

http://roboticstrends.com/security_defense_robotics/

article/clearpath_pledges_not_to_make_killer_robots

The Campaign To Stop Killer Robots seeks legislation and regulation that would block people from having access to or creating robotic weapons that can make decisions to kill without human intervention.
By Dylan Love, Business Insider - Filed Aug 14, 2014
Waterloo-based robotic vehicle manufacturer Clearpath Robotics is the first robotics company to sign on with the Campaign To Stop Killer Robots, "an international coalition of non-governmental organisations working to ban fully autonomous weapons."

The aptly-named Campaign To Stop Killer Robots seeks legislation and regulation that would block people from having access to or creating robotic weapons that can make decisions to kill without human intervention.

As the main conceit behind the campaign goes, "giving machines the power to decide who lives and dies on the battlefield is an unacceptable application of technology."

Meghan Hennessey, marketing communications manager at Clearpath, told Business Insider, "I came across the campaign, and [company CTO and co-founder] Ryan Gariepy was on board with their ideas. We're the first company in the robotics industry to step forward on this issue."

Clearpath is a five-year-old company gaining massive traction in research and development for unmanned robotics. Its client list is impressive, boasting names like the Canadian Space Agency, Google, and MIT. Most interestingly, this list also includes the Department of National Defence and the Navy — exactly the entities that might want a fully autonomous weapon that can function without a human operator.

"Even though we're not building weapons now, that might become an opportunity for us in the future," said Hennessey. "We're choosing to value our ethics over potential future revenue."

Cofounder Ryan Gariepy has written an open letter to express the company's stance on the issue. It appears in its entirety below.

"To the people against killer robots: we support you.

This technology has the potential to kill indiscriminately and to proliferate rapidly; early prototypes already exist. Despite our continued involvement with Canadian and international military research and development, Clearpath Robotics believes that the development of killer robots is unwise, unethical, and should be banned on an international scale.

The Context
How do we define "killer robot"? Is it any machine developed for military purposes? Any machine which takes actions without human direction? No. We're referring specifically to "lethal autonomous weapons systems (LAWS)"; systems where a human does not make the final decision for a machine to take a potentially lethal action.

Clearpath Robotics is an organisation that engineers autonomous vehicles, systems, and solutions for a global market. As current leaders in the research and development space for unmanned vehicles, making this kind of statement is a risk. However, given the potentially horrific consequences of allowing development of lethal autonomous robots to continue, we are compelled to insist upon the strictest regulation of this technology.

The Double-Edged Sword
There are, of course, pros and cons to the ethics of autonomous lethal weapons and our team has debated many of them at length. In the end, however, we, as a whole, feel the negative implications of these systems far outweigh any benefits.

Is a computer paired with the correct technology less likely to make rash, stress-driven decisions while under fire? Possibly. Conversely, would a robot have the morality, sense, or emotional understanding to intervene against orders that are wrong or inhumane? No. Would computers be able to make the kinds of subjective decisions required for checking the legitimacy of targets and ensuring the proportionate use of force in the foreseeable future? No. Could this technology lead those who possess it to value human life less? Quite frankly, we believe this will be the case.

This is an incredibly complex issue. We need to have this discussion now and take a stance; the robotics revolution has arrived and is not going to wait for these debates to occur.

Clearpath's Responsibility
Clearpath Robotics strives to improve the lives of billions by automating the world's dull, dirty, and dangerous jobs. This belief does not preclude the use of autonomous robots in the military; we will continue to support our military clients and provide them with autonomous systems – especially in areas with direct civilian applications such as logistics, reconnaissance, and search and rescue.

In our eyes, no nation in the world is ready for killer robots — technologically, legally, or ethically. More importantly, we see no compelling justification that this technology needs to exist in human hands. After all, the development of killer robots isn't a necessary step on the road to self-driving cars, robot caregivers, safer manufacturing plants, or any of the other multitudes of ways autonomous robots can make our lives better. Robotics is at a tipping point, and it's up to all of us to decide what path this technology takes.

Take Action
As a company which continues to develop robots for various militaries worldwide, Clearpath Robotics has more to lose than others might by advocating entire avenues of research be closed off. Nevertheless, we call on anyone who has the potential to influence public policy to stop the development of killer robots before it's too late.

We encourage those who might see business opportunities in this technology to seek other ways to apply their skills and resources for the betterment of humankind. Finally, we ask everyone to consider the many ways in which this technology would change the face of war for the worse. Voice your opinion and take a stance. #killerrobots"

Ryan Gariepy
Cofounder & CTO, Clearpath Robotics

Researchers Developing Mind-Controlled Robotic Legs

Rex Bionics' exoskeleton is being used by US researchers to investigate brain-machine interface with the hopes of one day giving patients with complete paralysis could use the robotic legs.
By Denise Roland, The Telegraph - Filed Aug 06, 2014

Thought-controlled robotic legs may still seem like the stuff of sci-fi, but for a group of scientists at the University of Houston in Texas, it is already a reality.

A research group led by electrical and computer engineering expert Jose Luis Contreras-Vidal is working on a brain-machine interface that could enable users to control a pair of robotic legs with their mind.

The scientists are testing the technology on the robotic exoskeleton developed by Rex Bionics, a New Zealand based company led by British healthcare investor Jeremy Curnock Cook.

"I have watched a thought control Rex in operation and it’s fascinating," said Curnock Cook.

Rex produces a pair of robotic legs that enable wheelchair users to walk otherwise unaided through a sophisticated system of sensors and balances.

The Rex boss stressed that he has no plans to develop a commercial version, but said a thought-controlled model could one day mean patients with complete paralysis could use the robotic legs.

"The reality is that [thought-controlled Rex] is not going to happen for a while and in many respects will be a special product," he said.

The robotic legs made by Rex are currently controlled by a small joystick at waist height, restricting their use to those with some movement in one hand at a minimum.

Curnock Cook's comments came as he unveiled the company's maiden set of interim results, following its £10m stock market debut earlier this year.

The company, which posted a £1.246m loss for the six months to May, is using its new funds to establish a sales force for the robotic legs, which have taken ten years to develop.

Robots Coming for White-Collar Jobs, Too

Robots won't replace most of the workforce, it will push jobs into other sectors, such as coding.
By Herb Weisbaum, NBC News - Filed Aug 06, 2014
The robots are coming, even for the boss's job.

Up until now, robots and other smart machines have been used to replace blue-collar workers. But a new study by The Pew Research Center and Elon University, released Wednesday, says that while artificial intelligence will continue to replace jobs in factories and shop floors, the coming wave of innovation will threaten significant numbers of white-collar workers, too.

"The collar of the future is a hoodie," said Amy Webb, CEO of strategy firm Webbmedia Group, who believes that while robots won't replace most of the workforce, it will push jobs into other sectors, such as coding.

Some of the other outcomes predicted by the nearly 1,900 technology experts canvassed for "AI, Robotics, and the Future of Jobs," include:

  • A transformation of labor, especially in the fields of transportation, fast food and medicine.
  • The accelerating shift of work to machines that can boost productivity and cut costs.
  • A shrinking of the middle class and expansion of the ranks of the unemployed.
  • Creation of new types of work requiring uniquely human capabilities.
  • Freedom from day-to-day drudgery that allows people to define work in a more positive and socially beneficial way.

The report showed that experts think the rise of the robots will bring both disruptions and benefits. When asked if automated artificial intelligence (AI) applications and robotic devices will have displaced more jobs than they have created by 2025, they were evenly split on the topic.

"Half of the respondents think the impact of AI and robotics on human employment will be positive or at worst neutral, and the other half think that it will displace more jobs than it creates," Aaron Smith, a senior researcher with Pew and co-author of the report, told CNBC.

Even when emerging technologies eliminate specific jobs, there might be a positive effect for some people, Smith explained. For example, if driverless cars become widespread, there will be fewer jobs for taxi drivers and truck drivers. But these vehicles could reduce accidents — saving lives — and make it possible for seniors and people with disabilities to get around more easily.

But the report includes some dire predictions.

"An increasing proportion of the world's population will be outside of the world of work — either living on the dole, or benefiting from the dramatically decreased costs of goods to eke out a subsistence lifestyle. The central question of 2025 will be: What are people for in a world that does not need their labor, and where only a minority are needed to guide the 'bot-based' economy?" wrote Stowe Boyd, lead researcher at Gigaom, a research group that attempts to humanize the impact of technology.

Mary Joyce, who runs the website Meta-Activism.org, sees the replacement of human workers with robots and algorithms as inevitable.

"There's no reason to believe that firms would behave in any other ways. And social forces, like unions, that would limit these actions, don't have the strength to prevent these changes," Joyce said.

Others said technology will not advance enough in the next decade to substantially impact the job market.

And some think society will adapt by inventing new types of work, especially jobs that take advantage of uniquely human capabilities, such as small-scale, artisanal and handmade modes of production.

"Historically, technology has created more jobs than it destroys and there is no reason to think otherwise in this case. Someone has to make and service all these advanced devices," wrote Vint Cerf, vice president and chief Internet evangelist for Google.

The respondents agreed that business leaders, policymakers and educators must all respond more quickly to the rapidly changing workplace. As Howard Rheingold, an educator and Internet sociologist noted, "Only the best-educated humans will compete with machines. And education systems in the U.S. and much of the rest of the world are still sitting students in rows and columns, teaching them to keep quiet and memorize what is told them, preparing them for life in a 20th century factory."


رشته‌های رسانای گرافن جایگزین‌های سبک تر و انعطاف‌پذیر تری برای سیم‌های مسی

نویسنده: ‫کاوه جهان آرای‬‎ سه شنبه, 10 تیر 1393 ساعت 11:13 
رشته‌های رسانای گرافن جایگزین‌های سبک تر و انعطاف‌پذیر تری برای سیم‌های مسی

سیم‌های مسی به زودی شاهد ورود رقبای تازه و جدی خواهند بود که قابلیت‌های بسیار زیادی همچون کش آمدن را همراه خواهند داشت. دانشمندان در دانشگاه پنسیلوانیا در همکاری با دانشگاه شینسو ژاپن توانستند رشته‌ای انعطاف پذیر از جنس گرافن بسازند که قابلیت رسانندگی مطلوبی را نیز دارا هستند.

این دانشمندان ابتدا از صفحات جداشده‌ی شیمیایی گرافن از یک قطعه گرافیت آغاز کردند و پس از اختلاط آن‌ها با آب و استفاده از سانتریفیوژ، دوغاب حاصل بر روی صفحه‌ای مسطح پخش شد و به آن اجازه داده شد تا خشک شود تا لایه‌ای نازک از اکسید گرافن بر روی آن تشکیل شود.

این لایه سپس از روی سطح جدا شد و به نوارهای نازکی بریده شده که در نهایت به وسیله‌ی یک ماشین به هم پیچیده می‌شوند. رشته‌های حاصل به سادگی قابلیت کش آمدن یا گره خوردن را داشتند بدون اینکه دچار پارگی شوند؛ ضمن اینکه مقاومتی بیشتر از سایر انواع الیاف کربن از خود نشان می‌دادند. این ویژگی خاص را می‌توان به حضور پاکت‌های هوای بسیار ریز درون رشته مربوط دانست.

با حذف اکسیژن از درون این ماده می‌توان به سادگی رسانندگی آن را افزایش داد و با اضافه کردن نانواستوانه‌های نقره در مرحله‌ی تشکیل فیلم نیز می‌توان به سادگی رسانندگی آن را تا رسیدن به حد مس افزایش داد. قابلیت انعطاف پذیری و کش آمدن به همراه وزن بسیار پایین این رشته می‌تواند آن‌ها را به جایگزین‌های بسیار مناسبی برای سیم‌های مسی تبدیل کند.

جزییات این پژوهش در مجله‌ی ACS Nano به چاپ رسیده است. باید دید چه زمانی می‌توان از هدفون‌های گرافنی بهره برد؟! نظر شما در خصوص این ماده‌ی جدید و فوق العاده چیست؟