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Submission + - The Chang'e-5 Recovery Team Wore Powered Exoskeletons (universetoday.com)

AmiMoJo writes: Other worlds aren’t the only difficult terrain personnel will have to traverse in humanity’s exploration of the solar system. There are some parts of our own planet that are inhospitable and hard to travel over. Inner Mongolia, a northern province of China, would certainly classify as one of those areas, especially in winter. But that’s exactly the terrain team members from the China Aerospace Science and Technology Corporation (CASTC) had to traverse on December 16th to retrieve lunar samples from the Chang’e-5 mission. What was even more unique is that they did it with the help of exoskeletons.

Strangely enough, the workers wearing the exoskeletons weren’t there to help with a difficult mountain ascent, or even pick up the payload of the lunar lander itself (which only weighed 2 kg). It was to set up a communications tent to connect the field team back to the main CASTC headquarters in Beijing.The exoskeletons were designed to help people carry approximately twice as much as they would be able to. Local state media described a single person carrying 50kg over 100m of the rough terrain without becoming tired. Setting up communications equipment isn’t all the exoskeletons are good for though. They were most recently used by Chinese military logistics and medical staff in the Himalayas, where the country has been facing down the Indian military over a disputed line of control.

Submission + - Edmund Clarke, 2007 winner of the ACM A.E. Turing Award, dies of Covid-19 (post-gazette.com)

McGruber writes: Edmund M. Clarke (https://en.wikipedia.org/wiki/Edmund_M._Clarke), the FORE Systems Professor of Computer Science Emeritus at Carnegie Mellon University, has died of Covid-19.

Professor Clarke was best known for his work in model checking, an automated method for detecting design errors in computer hardware and software. CMU president Farnam Jahanian said the world had “lost a giant in computer science” with Mr. Clarke’s death. “Ed’s pioneering work in model checking applied formal computational methods to the ultimate challenge: computers checking their own correctness,” Mr. Jahanian said in a statement. “As systems become ever more complex, we are just beginning to see the wide-reaching and long-term benefits of Ed's insights, which will continue to inspire researchers and practitioners for years to come.”

In the early 1980s, Mr. Clarke and his Harvard University graduate student, E. Allen Emerson — as well as Joseph Sifakis of the University of Grenoble, who was working separately — developed model checking, which has helped to improve the reliability of complex computer chips, systems and networks. For their work, the Association for Computing Machinery gave the three scientists the prestigious A.M. Turing Award — computer science’s Nobel Prize — in 2007.

Mr. Clark’s citation on the Turing Award website said Microsoft and Intel and other companies use model checking to verify designs for computer networks and software. “It is becoming particularly important in the verification of software designed for recent generations of integrated circuits, which feature multiple processors running simultaneously,” the citation page said. “Model checking has substantially improved the reliability and safety of the systems upon which modern life depends.”

Comment Re:I support a drug policy of (Score 1) 141

XTC is a good one. I thought it had significant long terms health effects on users, but apparently I was wrong
LSD and mushrooms are probably good as a category, distinct from the seriously addictive substances like crack, heroine, etc.
Alcohol is covered under the prohibition option.

Personally I am for legalizing all drugs.
The cost of the drug war is too high:
- police vs community
- guns and crime
- mass incarceration
- law enforcement loss of life
- corruption, cartels and gangs outside the us
- money to all the wrong people
- addicts as criminals rather than patients
- wasted resources that can be used elsewhere

Comment I believe bitcoin is (Score 2) 141

I believe bitcoin is:
A Ponzi scheme / valueless
Valued at the cost of electricity it takes to generate new coins
Valuable due to continued currency for illegal activity
Valuable due to continued currency for legitimate business
A government conspiracy
An alien conspiracy
What is bitcoin?

Comment Re:No "Alternative Fact" choice? (Score 1) 200

I suggested the poll question and I did include an alternative fact. I could not figure out a good way to fit Cowboy Neal in :(. Here is my original suggestion:

How do you former pentagon head, Luis Elizondo's claim of UFO's beyond a reasonable doubt?
a: truth
b: deliberate misinformation
c: gullibility, over interpretation of data
d: greed — hire us to find the UFO's
e: yoda told me not to tell you!

I am really interested in how people evaluate information in this day any age when "authoritative" voices are willing to lie and there is always conflicting information on any subject if you read the web. This person has had access to information that I don't have and be well trained authority. Normally I would tend to believe a person in this situation. However it goes against any evidence that I have seen and against my common sense. There are too many alternative ways to gather data by a society even merely equal to us, let alone advanced. However, in my mind, it is not beyond all possibility. I guess I will not believe it until a preponderance of experts have seen the evidence directly and declared it is something beyond current human capability and is not explained by natural phenomena.

Submission + - Now any Florida resident can challenge what is taught in public Florida schools

zantafio writes: Any resident in Florida can now challenge what kids learn in public schools, thanks to a new law that science education advocates worry will make it harder to teach evolution and climate change.

The legislation requires school boards to hire an "unbiased hearing officer" who will handle complaints about instructional materials, such as movies, textbooks and novels, that are used in local schools. Any parent or county resident can file a complaint, regardless of whether they have a student in the school system. If the hearing officer deems the challenge justified, he or she can require schools to remove the material in question.

Comment Code review (Score 1) 347

Where I work, everyone code reviews each others code. I find this to be the best way to propagate best practices. Novices programmers not only get comments from more experienced programmers but they also review code written by experienced members of the team. Discussions are as important as the initial comments. Code review cuts down significantly on bad habits because it is easier to fix things you know will be caught then to go back and fix them later.

Also we have reviews on code design too. This is done before writing code to prevent rewriting everything that is already submitted.

Comment Re:Photo's subject matter is important for humans (Score 1) 61

The thing is that all that stuff is hard to use. You still need skilled people to get good results.

This is still true, but not for long. Erasing objects is easy with photoshop content aware fill. Adding objects will be easy soon:
Rendering Synthetic Objects into Legacy

Comment Photo's subject matter is important for humans (Score 4, Interesting) 61

Look at the high variance images at the top of page 9 of the original article. I finding unsurprising at all the people can't tell if a sand dune was smoother or if erasures occurred on image of pine tree branches against pale blue sky.

One documentary on the development of new currency said portrait sizes were increased because of our ability to notices small variation in faces. I don't have the reference for this, but my personal observations match the claim.

My wife and I are both artists with masters of fine art in painting. For years, bad effects in movies will jump out at us. We will sometime refer to the "cgi cast of thousand" in egregiously offending movies. For some years now my ability to identify cgi inanimate objects has almost disappeared. In modern movies I almost never have a cgi object jump out at me. I notice that the cgi animation of people is similar improving, although glaring problems still appear. I am sure it has both to do with complexity of the physics problems and my own visual capability and nature focus of attention. I except it is few short years until I almost never notice any cgi modifications.

Comment Re:No business acumen (Score 1) 368

> pay-per-download site for *their* music

I guess I missed the word "their" and over interpreted. Since the problem she was addressing in the letter was royalty payments to artists in general and not herself, I was thinking of a generalized pay-per-download system. This would be a lot larger project requiring more complexity and vision in order to achieve its goals. This is what I think would be interest. I agree getting music directly from the artist is not a big thing.

Comment Re:No business acumen (Score 1) 368

This is a really interesting idea. I don't expect any single artist to do this as they investment of time and effort requires serious dedication. If artists wanted to be business people then they would not have become artist.

However if you could get maybe half of the top 20 artist to agree that it was in the best interest of the themselves and artists in general, they could pull there music form all the other services and form a new non-profit service (non-profit for the service no the artist). The top artists will drive people to the service. The service would use advertising and or fees and all the money would go to the artists / royalty owners.

Basically this is like a union with some very wealthy members such as the NFL's players union. The union would pay a health salary to president and others for the business aspect. The union could negotiate deals with other services if the membership thought it was in their best interest. It would have some of the drawbacks of such unions but in total it would be a lot better for the artists than current systems, if not so much for people who want to stream free music.

Comment Re:Questions (Score 1) 75

Thanks. That is great info. I am happy about my guess. I may be only an order of magnitude off on the # of nodes and I had 5-7 layers [input, 3-5, output] :)

When I was in college the 100 astrophysics class [rocks in space] taught estimation and actually asked how many trees in Chicago on the final. I thought this was probably one of the most valuable things you could teach liberal art students in a science class. One of my co-worker did very well on his hiring interview by doing a very good estimation of the number of veterinarians in NYC. He googled it when it he got home and was able to send a link that was about 10% from his answer. He was cherry picking, sure, but we were highly impressed. He is one of the most successful hires we ever made.

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