Talking about environmental impact is great and all, but we will use concrete until something supplants it due to economics. Right now we are seeing real interest in tall timber construction, and while the designers will tell you about potential environmental benefits the real driving force is potential dollars - it's expected to be faster and cheaper than concrete and steel. Concrete construction is energy intensive as the article points out, but it's also surprisingly labor intensive - moreso if you want to do it well.
This. Right now we can use carbon fiber to enhance concrete supports, but it's only done as a remediation due to the expense.
From the report they found their optimal mix as 0.7g of carbon fiber per liter of finished concrete (~0.3 g/kg). So with some back of the envelope math, an average office building might use 21,400 m^3 concrete. If we cut the concrete used in half, that would still require 7.5 metric tons of graphene. So the question is how much will 7.5 tons of graphene cost you, and is that more or less than 12,000 tons of concrete.
I'm sure that everyone will be talking about the tolerances and the production targets, but the one bone I'd like to pick is the "chain of command" comment. Elon seems very hostile to the very idea, which is to be expected given his origins in tech. However, in a production environment a well-working CoC is an important part of effective communications. I agree that it's important for workers to feel comfortable talking to any level supervisor if needed, and if you need to report a problem to another department you should, but you also need to talk to your supervisor. If a worker is consistently fails to communicate with his supervisor, bypassing them to talk directly to someone further up the chain or someone in another discipline, then not only is he giving others a jumbled picture of what his department is thinking (Is this opinion just his or widespread?), but he's also leaving his supervisor in the dark. Nobody wants to get called on the carpet to explain a problem nobody told them about.
Not working at Tesla I can't say what the culture is, and maybe the chain of command has become too absolute and is stifling communication, but his comment seems a little cavalier for someone who is trying to build a stable production environment.
Calories are usually not the issue overall, as high-caloric foods tend to be easy to transport and store. The issue is more nutrient-rich foods and the bulk items needed for healthy digestion.
I think part of what they're working on is optimizing yield against space and weight of materials, since these are also concerns in Antarctica. I also imagine fresh vegetables would be a premium item down there, especially in winter.
I think you're being a little hard on a technology in a nascent stage. One of the particular advantages of ghost imaging is the potential for 3-D imaging when several detectors are used, which could result in something that would replace CT scanning. I would wait a bit more before completely dismissing this line of research.
The problem is with the new laws coming out it might be illegal for them not to look. Once they've looked, then if you violate their TOS of course they're going to remove it.
Shouldn't it be fairly simple to determine when this was added to the blockchain? My assumption was this was injected early on, when single systems still had a decent chance to write a block. If we know when it was injected, we should know the wallet to which coins were issued to, then there's a decent probability this could be traced back to the individual running the system, who may (or may not) be responsible.
If the item is so incredible, so revolutionary, then why lie about it? It's larger than a grain of salt, but not by much. The average grain of salt is cuboidal and.3 mm a side. Just say the damn thing is 1mm square and give specs.
People here react badly to overhyped stats because we're inundated with them and frankly sick of having to sort out what's real and what was dreamed up by someone in sales.
this was going to happen eventually, the question always was when and how. Now we get to watch as a whole host of other issues finally move from the theoretical to the practical. There are three dimensions to consider: How will this play out with regulators? How will this play out legally? How will this play out in public opinion?
Also we get to find out an answer for who is at fault when an autonomous car causes harm, and to what extent are they liable. These will be precedent setting questions. The circumstances of the actual accident will influence the answers, but don't fool yourself, they won't drive it.
My guess was it was a problem that was brought about by post-tensioning, and hearing that they were actually doing post tension tightening when it collapsed seems to support that guess. I would imagine they were tightening cables along the top support side when the opposing cables failed and the deck separated.
I'd be interested in seeing the actual study, with controls, since 'm guessing that the plastic micropipet tips they used to transfer water and dyes likely added some microplastics as well.
There was significant debt from way back, but the bulk of it was racked up when the company was acquired in a leveraged buyout back in 2006. The way a leveraged buyout basically works is the company being acquired borrows a bunch of money that the buyer uses to pay the current owner. So in this case they borrowed something like 12 billion just for that bit alone. If all goes well, your investment is profitable and can pay off its debts free and clear, but if you don't prioritize getting rid of debt over profit taking, or way overpaid for the company in the first place, then the business goes under from the debt. Bain did both.
This reminds me of when my NES carts would glitch out due to dust or whatever. You'd get these weird games with swapped and distorted sprites and controls. Sometimes they were playable and sometimes not, but it was fun to try.
Slashdot Mirror
Two concrete articles today! It's great.
Talking about environmental impact is great and all, but we will use concrete until something supplants it due to economics. Right now we are seeing real interest in tall timber construction, and while the designers will tell you about potential environmental benefits the real driving force is potential dollars - it's expected to be faster and cheaper than concrete and steel. Concrete construction is energy intensive as the article points out, but it's also surprisingly labor intensive - moreso if you want to do it well.
underrated post
"Graphene can do anything, except leave the lab"
This. Right now we can use carbon fiber to enhance concrete supports, but it's only done as a remediation due to the expense.
From the report they found their optimal mix as 0.7g of carbon fiber per liter of finished concrete (~0.3 g/kg). So with some back of the envelope math, an average office building might use 21,400 m^3 concrete. If we cut the concrete used in half, that would still require 7.5 metric tons of graphene. So the question is how much will 7.5 tons of graphene cost you, and is that more or less than 12,000 tons of concrete.
Website found to be doing the thing it was designed to do the whole time!
next you are going to tell me that google uses my search history to target ads - the very ads they run next to my results!!
This is spot on. The author simply repeats conventional wisdom as if it were an insight, without adding anything concrete or actionable.
I'm sure that everyone will be talking about the tolerances and the production targets, but the one bone I'd like to pick is the "chain of command" comment. Elon seems very hostile to the very idea, which is to be expected given his origins in tech. However, in a production environment a well-working CoC is an important part of effective communications. I agree that it's important for workers to feel comfortable talking to any level supervisor if needed, and if you need to report a problem to another department you should, but you also need to talk to your supervisor. If a worker is consistently fails to communicate with his supervisor, bypassing them to talk directly to someone further up the chain or someone in another discipline, then not only is he giving others a jumbled picture of what his department is thinking (Is this opinion just his or widespread?), but he's also leaving his supervisor in the dark. Nobody wants to get called on the carpet to explain a problem nobody told them about.
Not working at Tesla I can't say what the culture is, and maybe the chain of command has become too absolute and is stifling communication, but his comment seems a little cavalier for someone who is trying to build a stable production environment.
Did anyone else first think they were talking about copypasta?
Calories are usually not the issue overall, as high-caloric foods tend to be easy to transport and store. The issue is more nutrient-rich foods and the bulk items needed for healthy digestion.
This is the real story.
I think part of what they're working on is optimizing yield against space and weight of materials, since these are also concerns in Antarctica. I also imagine fresh vegetables would be a premium item down there, especially in winter.
You have a good point...
We can move it to Romania!
I think you're being a little hard on a technology in a nascent stage. One of the particular advantages of ghost imaging is the potential for 3-D imaging when several detectors are used, which could result in something that would replace CT scanning. I would wait a bit more before completely dismissing this line of research.
The problem is with the new laws coming out it might be illegal for them not to look. Once they've looked, then if you violate their TOS of course they're going to remove it.
If you had a "powerful enemy" they wouldn't need to aggregate metadata to find out about you. They would do so directly.
If you weren't purchasing anything from them, how do you consider yourself a customer?
Shouldn't it be fairly simple to determine when this was added to the blockchain? My assumption was this was injected early on, when single systems still had a decent chance to write a block. If we know when it was injected, we should know the wallet to which coins were issued to, then there's a decent probability this could be traced back to the individual running the system, who may (or may not) be responsible.
People here react badly to overhyped stats because we're inundated with them and frankly sick of having to sort out what's real and what was dreamed up by someone in sales.
Also we get to find out an answer for who is at fault when an autonomous car causes harm, and to what extent are they liable. These will be precedent setting questions. The circumstances of the actual accident will influence the answers, but don't fool yourself, they won't drive it.
My guess was it was a problem that was brought about by post-tensioning, and hearing that they were actually doing post tension tightening when it collapsed seems to support that guess. I would imagine they were tightening cables along the top support side when the opposing cables failed and the deck separated.
I'd be interested in seeing the actual study, with controls, since 'm guessing that the plastic micropipet tips they used to transfer water and dyes likely added some microplastics as well.
There was significant debt from way back, but the bulk of it was racked up when the company was acquired in a leveraged buyout back in 2006. The way a leveraged buyout basically works is the company being acquired borrows a bunch of money that the buyer uses to pay the current owner. So in this case they borrowed something like 12 billion just for that bit alone. If all goes well, your investment is profitable and can pay off its debts free and clear, but if you don't prioritize getting rid of debt over profit taking, or way overpaid for the company in the first place, then the business goes under from the debt. Bain did both.
And whattaya know? Guess who owns IHeartMedia.
This reminds me of when my NES carts would glitch out due to dust or whatever. You'd get these weird games with swapped and distorted sprites and controls. Sometimes they were playable and sometimes not, but it was fun to try.
My lack of google glasses has exactly zero to do with my fear of being attacked for wearing them, since I wasn't even aware this was a thing.