I realize someone mentioned apolloarchive, but Nasa also has an incredible amount of Apollo material online.
Almost everything you want to know about the mission op's is here.
The Apollo 11 landing from 11 minutes out is amazing, including the 1202's. But I have to admit, the one that sends shivers down my spine every time I watch it is Apollo 17. Cernan & Schmitt's reaction after the pitchover when they see the landing zone is better than anything you've ever seen in a movie, ever.
Many businesses are built around catering to social activities. That is, people just naturally like doing certain things. The way a big light shining on a dark wall can fake us into thinking it's a portal into another world is one example. People like to gather together and admire this phenomenon. People like to dissect how the artist achieves the illusion. People like to see it with their friends and share it. People like to make out in the back.
Movie chains did not invent this social activity, they merely use it. Movie chains do not determine how we like to socialize, they merely take advantage of the fact that we do.
Movies are a cultural activity. Why then only apply economic theory to movie theaters? Instead of just saying, private enterprise has the right to do what it wants, why not say, people in general have the right to do what they want?
The standard answer would be, economic theory, capitalism specifically, has been shown to provide efficient solutions to economic problems. Which is a non-sequitur, because that wasn't the question. The question was, why shouldn't people be allowed to socialize as they want, unfettered? If movie chains want to cater to that fine, but by what social thinking are movie chains allowed to dictate how we socialize? Being subject to a non-safety search probably affects the social aspect of the experience.
Realistically, this is the way things are right now, there's not much we can do. But I disagree that the application of market theory to cultural activities makes any sense. Saying that customers can vote with their feet misses the point, people don't want to go do something else. It's just that, there's no way to quantify how that aggravation compares to the theaters' profits.
I don't know what data you looked at, it's probably an immersion test at room temp after which they tested tensile strength. Kevlar has fabulous tensile strength, that's not its problem.
There aren't any obvious references I can find, so you will just have to trust me on this, Kevlar's compressive strength, which is low to begin with, goes to hell after moisture absorption and at high service temp. Typically an aircraft part has to withstand 125 degrees F.
The combination of high tensile strength and low compressive strength has led to the view within the industry that using Kevlar is like designing with chain. Especially if it has to work when it is a little bit warm.
Didn't early airplanes use either paper or silk for the skin, rather than metal? All they had to do to make characteristics of the medium more desirable (weatherproof, taught) was to "dope" the medium...
It also rots. My neighbour had a Pacer whose fabric rotted out and he had to get the wing recovered.
Silk is still an extremely attractive (oops, no pun intended) medium for composites...
Silk is often referred to as "stronger than steel". That may be true per unit density (strength/weight), it really doesn't matter because silk is useless as a structural due to it's low stiffness. Young's modulus is around 100 or 200 MPA, whereas aluminum is about 70,000 and steel is 200,000.
But, with any of those modern materials used in composites, the tensile strength is one thing, but torsional stiffness is nonexistent...
There is no such thing as the torsional strength of a material. Structures have torsional strength, not materials. Materials have shear strength, and the shear strength of even the very very best polymers are negligible compared to common structural materials. The shear strength of common high-performance epoxies used in aircraft composites are maybe 5 ksi when you account for moisture absorption and service temperature, whereas 2024 aluminum is maybe 30 ksi.
Resin by itself has extremely good torsional strength, but very little tensile strength and is very brittle...
Resin doesn't have good "torsional" (shear) strength, it has bad shear strength. Ditto for the tensile strength. Again, compared to most structural materials, most polymers (resins) have high elongation to failure but that varies widely depending on the amount of crosslinking of the hydrocarbon chains. Within the epoxies, you can formulate ones that have low crosslinking and stretch like bubblegum, or you can crosslink the bejeepers out of them and create glass. It depends on the chemistry.
Carbon fibre is protected from UV, water, and abrasion by the epoxy (and usually a additional layer of protection using acrylic, lacquer, or other coating - in other words paint)...
Actually, the resin together with the fibers forms a microstructure that becomes a material continuum from the macro perspective. That is, the composite is actually a structure on a microscopic scale, but from an engineering point of view it is viewed as a material with properties derived using classical lamination theory. So the purpose of the matrix (resin) is structural, you could say to support the fibers that carry the actual load. The paint is required to protect the matrix from UV and moisture as most polymers are susceptible to both.
...and the resin provides torsional stiffness by itself AND by bonding several layers of the cloth together, which utilizes the tensile strength of each composite to further increase torsional strength without becoming brittle.
The resin doesn't provide any of the stiffness, the fibers do all that, the resin (matrix) supports the fibers so they can do their job. The shear stiffness and strength of the laminate stack come from plies at 45 degrees to the load application direction. Mohr's circle for pure shear tells us that you get pure tension and compression in the 45 degree directions, which the fibers can carry. It's quite clever and is the classic example of structural tailoring.
Why should paper be any different?
A million reasons. How resistant the material is to delamination would be my first question. Hidden delamination and it's effect on compression strength was carbon/epoxy's Achilles heel for a long time. Getting the matrix (epoxy?)
It would be very interesting if someone got caught using cracked copies of Vista and Office 07 to comply with this.
Civil disobedience and subversion don't seem to be part of polite Western society any more, but still, one can dream. That society at large and a judge in particular would be sympathetic to a parent who is forced to pay the MS tax "for the sake of the children" when low-cost and no-cost alternatives exist.
I can just imagine a tired looking soccer mom and middle management dad sitting in front of the camera with fists full of back-to-school bills for clothes, calculators, cell phones, computers, printers, sneakers, band equipment, sports equipment, more clothes, paper, cool pens, text books, binders, and yet more clothes...holding up one more bill for Vista, Office 2007, and the new computer required to RUN THEM, and saying into the camera "Why should we pay for this when there are free legal alternatives that work just as well and when nobody asked our opinion before this decision was made. If there really is no alternative to using MS products then the cost of MS is a tax, and MS should ergo be expropriated in order to hold it accountable to the taxpayers that fund it. We therefore refuse to pay tax to MS until said company becomes answerable to its tax base, or until our school district specifies at least one alternative zero-cost software environment that would impart NO SCHOLASTIC PENALTY."
I use cinemamontreal often because I live there. The vast majority of comments are in french, even for the english movies. For the following reasons: 1) people who post tend to be young, and young people in Quebec prefer french because, by law, most are forced into french schools and cannot study english until grade 5(?) b) all english movies must be released in dubbed french at the same time, also by law, the comment boards are for both versions iii) most francophones prefer to see the original english version even if they don't speak english very well.
I try, I really do, not to fall into the obvious traps but if I did it wouldn't be the first time. My implied premise is that there's a difference between Anonymous and anonymous. Ok that's splitting hairs I know but it's Saturday so I reserve the right to ride off on wild tangents. Anonymous is a proper noun and anonymous is an adjective. *sigh* I even annoy myself sometimes.
On top of the fact that I'm perched on a darkly obscure distinction is the unfortunate fact that I'm using Fox as a source. That's just asking for it. I know this.
Can I say that.*chan culture understands the label Anonymous to be part of the the tribe's defining characteristics? Along with quasi-code looking language inventions and obscure acronyms and 133+ speak. It looks to me very much like a classic case of group definition by exclusion. Note the enthusiasm someone demonstrated when they proudly declared that anyone showing up in their territory because of Fox has already been excluded as a "foxfag".
Also, while I'd be the very very VERY last person to side with Fox on anything there's an old cautionary phrase that fits: A third-rate professional is always better than a first-rate amateur. So while Fox has ulterior motives and their coverage of everything is tinted red, one shouldn't write off the bare facts they used with a wave of the hand. They are professional information gatherers.
And also.*chan claimed ownership of goatse. That's just plain stupid. Probably evil too.
Quite. And if it occupies the kids who have nothing to do because their divorced moms and dads are too busy working to pay for their BIG STUPID PICKUP TRUCKS then I'm all for it. Keeps them off my lawn.
Absolutely there is yellow journalism involved here.
Let's be honest ok? We all have have deep dark suspicions there are secret organized groups who go around manipulating message boards. An innocuous example is Snakes On A Plane. If you go to cinemamontreal, half the user comments are english, whereas the normal fraction is about 10%. That made me think maybe I wasn't so paranoid after all.
The exploding van is apropos, because people associated with Anonymous did threaten several football stadiums with radioactive dirty truck bombs. One of them is charged with a crime. And lets not forget one of them also left a myspace kid's mom a threatening phone message involving the words "slit" and "throat".
As an amateur psychologist and observer of human nature I'd guess anyone who thinks "lulz" is cool isn't a very sophisticated thinker; this bunch are probably just alienated kids. Still, just because they use the internet and their moniker sounds a little like AC doesn't mean they get my sympathy.
If you read page 6 of the test description, under Test Design, they say this:
This test is not intended to measure the maximum throughput that a server can deliver
The test simulates credit card transactions coming in at a controlled rate.
So this test would let someone get an idea of their operating costs. The fixed capital costs determined by required throughput and how much hardware needed to handle it is a separated issue this test doesn't tell you anything about.
IANAEE but I found this thing (pdf) from DELL that has a "typical" efficiency curve (fig A, on the third page of the pdf, page # 64) that shows efficiency is pretty flat from 35% up to max load. Within maybe 5%.
If you read the 6th paragraph of the article, AMD wasn't aware of this test, according to "John Fruehe, manager of worldwide market development for server/workstation products at AMD"
A Möbius strip is a developable surface, that is, a surface that can be created by bending a flat surface without stretching it. For example, a cylinder is developable but a sphere is not.
When the summary articles refer to "solving" the Möbius strip, they are talking about a general solution to the problem of predicting what physically happens to a flat sheet when it is deformed into a Möbius strip. So this work is in the domain of mechanics as opposed to pure geometry.
With a general solution they are able to predict how different flat sheets deform into strips. Apparently, as the sheet becomes wider, the resulting strip becomes more triangular. The mechanical energy density of bending becomes more concentrated into creases.
Developable surfaces are of practical interest because it is easier to form sheet materials by bending them in one direction than in two directions. Bending in two directions requires stretching of the material and is harder to do. For example, to make a cylinder out of a sheet of tin, you could bend it with your hands. To form the same sheet into a sphere, you would have to bash it with a ball-peen hammer for several days.
The design software for composite structures, like the 787, includes programs that generate "flat patterns", which are the flat shapes the uncured composite fabric has to be cut into so it will form into the final shape of the part. Those are sort of developable surfaces, but not strictly so, because the fabric is a bit stretchy and the manufacturing process takes advantage of that fact.
Assuming this is about Indian oursourcing through Canada (which is exactly what is happening in my industry, aerospace), there is opportunity here. Hook up with someone you know in Canada, get them to hire and the workers, and you provide the American interface to your American customers. Provide contract services.
It's called the global delivery model. OK, you wouldn't be a coder anymore, you'd be an agent, but at least you would get to wear a Rolex.
Troll? This entire TOPIC is a troll. Mocking a troll isn't trolling, it's parody. Don't expect me to sepnd 20 minutes thinking of an erudite response to Mr. Taco's pandering. If Mr Taco wants to recast/. as a place where the ignorant can spew, that's fine, but it's not my/. To the extent that I have one.
Stories about MPAA shenanigans could just as easily and correctly be entitled, for example, "Sony Sets Up Fake Site..." (Or Disney, or Universal, or Paramount, or Warner). MPAA is, after all, simply their agent in these matters.
In lieu of mod points, I second your opinion. Pretty soon we'll have to start calling it SlashFox BREAKING NEWS FOR HOT-BODY UNDERWEAR-MODEL MARINE NERD BABES GONE WILD. You Won't believe what's happening on the beaches of Redmond!!!! Plus this feature, file systems and disappearing wives!!! Is it murder??? Is there a connection??? Only here!!! Only we dare!!! Plus, digg sucks!!! Don't go there!!!
Heres how I see it: stories like this drive traffic to/. so they can stay in business and host real news. It's just embarrassing because/. is the site I tend to gravitate toward.
Despite the fact we had Roswell yesterday and perpetual energy today, I still find if I browse stories with the smartometer set to 5, there are some amazingly intelligent and well informed people who make up/.
Not the ones who believe in this crappolla though.
Slashdot Mirror
I realize someone mentioned apolloarchive, but Nasa also has an incredible amount of Apollo material online.
Almost everything you want to know about the mission op's is here.
The Apollo 11 landing from 11 minutes out is amazing, including the 1202's. But I have to admit, the one that sends shivers down my spine every time I watch it is Apollo 17. Cernan & Schmitt's reaction after the pitchover when they see the landing zone is better than anything you've ever seen in a movie, ever.
Many businesses are built around catering to social activities. That is, people just naturally like doing certain things. The way a big light shining on a dark wall can fake us into thinking it's a portal into another world is one example. People like to gather together and admire this phenomenon. People like to dissect how the artist achieves the illusion. People like to see it with their friends and share it. People like to make out in the back.
Movie chains did not invent this social activity, they merely use it. Movie chains do not determine how we like to socialize, they merely take advantage of the fact that we do.
Movies are a cultural activity. Why then only apply economic theory to movie theaters? Instead of just saying, private enterprise has the right to do what it wants, why not say, people in general have the right to do what they want?
The standard answer would be, economic theory, capitalism specifically, has been shown to provide efficient solutions to economic problems. Which is a non-sequitur, because that wasn't the question. The question was, why shouldn't people be allowed to socialize as they want, unfettered? If movie chains want to cater to that fine, but by what social thinking are movie chains allowed to dictate how we socialize? Being subject to a non-safety search probably affects the social aspect of the experience.
Realistically, this is the way things are right now, there's not much we can do. But I disagree that the application of market theory to cultural activities makes any sense. Saying that customers can vote with their feet misses the point, people don't want to go do something else. It's just that, there's no way to quantify how that aggravation compares to the theaters' profits.
I don't know what data you looked at, it's probably an immersion test at room temp after which they tested tensile strength. Kevlar has fabulous tensile strength, that's not its problem.
There aren't any obvious references I can find, so you will just have to trust me on this, Kevlar's compressive strength, which is low to begin with, goes to hell after moisture absorption and at high service temp. Typically an aircraft part has to withstand 125 degrees F.
The combination of high tensile strength and low compressive strength has led to the view within the industry that using Kevlar is like designing with chain. Especially if it has to work when it is a little bit warm.
It also rots. My neighbour had a Pacer whose fabric rotted out and he had to get the wing recovered.
Silk is often referred to as "stronger than steel". That may be true per unit density (strength/weight), it really doesn't matter because silk is useless as a structural due to it's low stiffness. Young's modulus is around 100 or 200 MPA, whereas aluminum is about 70,000 and steel is 200,000.
There is no such thing as the torsional strength of a material. Structures have torsional strength, not materials. Materials have shear strength, and the shear strength of even the very very best polymers are negligible compared to common structural materials. The shear strength of common high-performance epoxies used in aircraft composites are maybe 5 ksi when you account for moisture absorption and service temperature, whereas 2024 aluminum is maybe 30 ksi.
Resin doesn't have good "torsional" (shear) strength, it has bad shear strength. Ditto for the tensile strength. Again, compared to most structural materials, most polymers (resins) have high elongation to failure but that varies widely depending on the amount of crosslinking of the hydrocarbon chains. Within the epoxies, you can formulate ones that have low crosslinking and stretch like bubblegum, or you can crosslink the bejeepers out of them and create glass. It depends on the chemistry.
Actually, the resin together with the fibers forms a microstructure that becomes a material continuum from the macro perspective. That is, the composite is actually a structure on a microscopic scale, but from an engineering point of view it is viewed as a material with properties derived using classical lamination theory. So the purpose of the matrix (resin) is structural, you could say to support the fibers that carry the actual load. The paint is required to protect the matrix from UV and moisture as most polymers are susceptible to both.
The resin doesn't provide any of the stiffness, the fibers do all that, the resin (matrix) supports the fibers so they can do their job. The shear stiffness and strength of the laminate stack come from plies at 45 degrees to the load application direction. Mohr's circle for pure shear tells us that you get pure tension and compression in the 45 degree directions, which the fibers can carry. It's quite clever and is the classic example of structural tailoring.
A million reasons. How resistant the material is to delamination would be my first question. Hidden delamination and it's effect on compression strength was carbon/epoxy's Achilles heel for a long time. Getting the matrix (epoxy?)
It would be very interesting if someone got caught using cracked copies of Vista and Office 07 to comply with this.
Civil disobedience and subversion don't seem to be part of polite Western society any more, but still, one can dream. That society at large and a judge in particular would be sympathetic to a parent who is forced to pay the MS tax "for the sake of the children" when low-cost and no-cost alternatives exist.
I can just imagine a tired looking soccer mom and middle management dad sitting in front of the camera with fists full of back-to-school bills for clothes, calculators, cell phones, computers, printers, sneakers, band equipment, sports equipment, more clothes, paper, cool pens, text books, binders, and yet more clothes...holding up one more bill for Vista, Office 2007, and the new computer required to RUN THEM, and saying into the camera "Why should we pay for this when there are free legal alternatives that work just as well and when nobody asked our opinion before this decision was made. If there really is no alternative to using MS products then the cost of MS is a tax, and MS should ergo be expropriated in order to hold it accountable to the taxpayers that fund it. We therefore refuse to pay tax to MS until said company becomes answerable to its tax base, or until our school district specifies at least one alternative zero-cost software environment that would impart NO SCHOLASTIC PENALTY."
I know. But one can dream, can't one?I like it...subversive, nonsensical, heck, practically surreal. Very George Carlin. And you can never have too much GC.
I use cinemamontreal often because I live there. The vast majority of comments are in french, even for the english movies. For the following reasons: 1) people who post tend to be young, and young people in Quebec prefer french because, by law, most are forced into french schools and cannot study english until grade 5(?) b) all english movies must be released in dubbed french at the same time, also by law, the comment boards are for both versions iii) most francophones prefer to see the original english version even if they don't speak english very well.
I try, I really do, not to fall into the obvious traps but if I did it wouldn't be the first time. My implied premise is that there's a difference between Anonymous and anonymous. Ok that's splitting hairs I know but it's Saturday so I reserve the right to ride off on wild tangents. Anonymous is a proper noun and anonymous is an adjective. *sigh* I even annoy myself sometimes.
On top of the fact that I'm perched on a darkly obscure distinction is the unfortunate fact that I'm using Fox as a source. That's just asking for it. I know this.
Can I say that .*chan culture understands the label Anonymous to be part of the the tribe's defining characteristics? Along with quasi-code looking language inventions and obscure acronyms and 133+ speak. It looks to me very much like a classic case of group definition by exclusion. Note the enthusiasm someone demonstrated when they proudly declared that anyone showing up in their territory because of Fox has already been excluded as a "foxfag".
Also, while I'd be the very very VERY last person to side with Fox on anything there's an old cautionary phrase that fits: A third-rate professional is always better than a first-rate amateur. So while Fox has ulterior motives and their coverage of everything is tinted red, one shouldn't write off the bare facts they used with a wave of the hand. They are professional information gatherers.
And also .*chan claimed ownership of goatse. That's just plain stupid. Probably evil too.
Missed my point. Where did the mass of english comments come from? Not Montreal.
Absolutely there is yellow journalism involved here.
Let's be honest ok? We all have have deep dark suspicions there are secret organized groups who go around manipulating message boards. An innocuous example is Snakes On A Plane. If you go to cinemamontreal, half the user comments are english, whereas the normal fraction is about 10%. That made me think maybe I wasn't so paranoid after all.
The exploding van is apropos, because people associated with Anonymous did threaten several football stadiums with radioactive dirty truck bombs. One of them is charged with a crime. And lets not forget one of them also left a myspace kid's mom a threatening phone message involving the words "slit" and "throat".
As an amateur psychologist and observer of human nature I'd guess anyone who thinks "lulz" is cool isn't a very sophisticated thinker; this bunch are probably just alienated kids. Still, just because they use the internet and their moniker sounds a little like AC doesn't mean they get my sympathy.
600 is a 20% increase from 500, and 500 is a 17% decrease from 600. It's equally correct to say difference between 500 and 600 is 17% and 20%.
If you read page 6 of the test description, under Test Design, they say this:
The test simulates credit card transactions coming in at a controlled rate. So this test would let someone get an idea of their operating costs. The fixed capital costs determined by required throughput and how much hardware needed to handle it is a separated issue this test doesn't tell you anything about.IANAEE but I found this thing (pdf) from DELL that has a "typical" efficiency curve (fig A, on the third page of the pdf, page # 64) that shows efficiency is pretty flat from 35% up to max load. Within maybe 5%.
If you read the 6th paragraph of the article, AMD wasn't aware of this test, according to "John Fruehe, manager of worldwide market development for server/workstation products at AMD"
If you were trying to make a joke so obscure nobody would ever even notice it was a joke, let alone get it, you have failed.
A Möbius strip is a developable surface, that is, a surface that can be created by bending a flat surface without stretching it. For example, a cylinder is developable but a sphere is not.
When the summary articles refer to "solving" the Möbius strip, they are talking about a general solution to the problem of predicting what physically happens to a flat sheet when it is deformed into a Möbius strip. So this work is in the domain of mechanics as opposed to pure geometry.
With a general solution they are able to predict how different flat sheets deform into strips. Apparently, as the sheet becomes wider, the resulting strip becomes more triangular. The mechanical energy density of bending becomes more concentrated into creases.
Developable surfaces are of practical interest because it is easier to form sheet materials by bending them in one direction than in two directions. Bending in two directions requires stretching of the material and is harder to do. For example, to make a cylinder out of a sheet of tin, you could bend it with your hands. To form the same sheet into a sphere, you would have to bash it with a ball-peen hammer for several days.
The design software for composite structures, like the 787, includes programs that generate "flat patterns", which are the flat shapes the uncured composite fabric has to be cut into so it will form into the final shape of the part. Those are sort of developable surfaces, but not strictly so, because the fabric is a bit stretchy and the manufacturing process takes advantage of that fact.Assuming this is about Indian oursourcing through Canada (which is exactly what is happening in my industry, aerospace), there is opportunity here. Hook up with someone you know in Canada, get them to hire and the workers, and you provide the American interface to your American customers. Provide contract services.
It's called the global delivery model. OK, you wouldn't be a coder anymore, you'd be an agent, but at least you would get to wear a Rolex.Troll? This entire TOPIC is a troll. Mocking a troll isn't trolling, it's parody. Don't expect me to sepnd 20 minutes thinking of an erudite response to Mr. Taco's pandering. If Mr Taco wants to recast /. as a place where the ignorant can spew, that's fine, but it's not my /. To the extent that I have one.
Stories about MPAA shenanigans could just as easily and correctly be entitled, for example, "Sony Sets Up Fake Site..." (Or Disney, or Universal, or Paramount, or Warner). MPAA is, after all, simply their agent in these matters.
In lieu of mod points, I second your opinion. Pretty soon we'll have to start calling it SlashFox BREAKING NEWS FOR HOT-BODY UNDERWEAR-MODEL MARINE NERD BABES GONE WILD. You Won't believe what's happening on the beaches of Redmond!!!! Plus this feature, file systems and disappearing wives!!! Is it murder??? Is there a connection??? Only here!!! Only we dare!!! Plus, digg sucks!!! Don't go there!!!
You don't talk like that on dates do you? If so, there's one more genetic line down the internets.
Heres how I see it: stories like this drive traffic to /. so they can stay in business and host real news. It's just embarrassing because /. is the site I tend to gravitate toward.
Despite the fact we had Roswell yesterday and perpetual energy today, I still find if I browse stories with the smartometer set to 5, there are some amazingly intelligent and well informed people who make up /.
Not the ones who believe in this crappolla though.The American Society of Civil Lawyers "Suing The Pants Off^w^w^w Everybody Since 1969"