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Originally Posted by Erat
(Post 1391414)
I don't understand.
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The phrase "Center for Kids Who Can't Read Good and Who Wanna Learn to Do Other Stuff Good Too" is also an excerpt from the film Zoolander, in which the title character is, by any reasonable standard, an idiot.
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Originally Posted by Erat
(Post 1391414)
I don't understand.
Edit, berkley you, non-working preview! |
Unseen color footage from Japan prior to WWII and during the war. Some of the pre-war writings are eerie. Very well produced and really interesting.
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Volkswagens, at least eight to ten deep nose to tail here at the port in Tampa.
https://www.miataturbo.net/attachmen...209_091719.jpg |
Originally Posted by triple88a
(Post 1391439)
My meme? Shes a complete idiot and smiles about every question they ask her without responding. Trump gave her the position to be the education secretary.
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Originally Posted by sixshooter
(Post 1391505)
Unseen color footage from Japan prior to WWII and during the war. Some of the pre-war writings are eerie. Very well produced and really interesting.
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Originally Posted by Erat
(Post 1391514)
The meme. It's the meme I do not understand. Why is teaching children who may not be able to read well a trade or skill they can succeed at bad or meme worthy.
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In loving memory of Braineack, who was taken from us before his time:
May you warn all the folks in heaven of the impending danger of communist nazi police dogs fraudulently voting for trans-gendered socialist candidates in an authoritarian police state controlled by liberal think-tanks funded by way of the national endowment for the arts. |
Originally Posted by Joe Perez
(Post 1391715)
In loving memory of Braineack, who was taken from us before his time:
May you warn all the folks in heaven of the impending danger of communist nazi police dogs fraudulently voting for trans-gendered socialist candidates in an authoritarian police state controlled by liberal think-tanks funded by way of the national endowment for the arts. Blocked due to "copyright." |
Originally Posted by Mobius
(Post 1391719)
Blocked due to "copyright."
Ah well, it was South Park Season 19, Episode 7, in which the school's new principal over-reacts to a student who is chatting with her friend during a school assembly, and calls the police. Officer Barbrady responds to the call, and accidentally shoots a student in the arm, which leads to him being fired, which leads to the town's hip new business district (built around Kenny's house) turning into a crackhead wasteland, which leads to the boys becoming ninjas, and so on... It's a very well-written thinkpiece which fits unobtrusively into the overall S19 PC Principal story-arc. Anyway, completely unrelated: |
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Originally Posted by sixshooter
(Post 1391829)
[img]Divebomber
https://cimg5.ibsrv.net/gimg/www.mia...4050abe520.jpg |
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Making music with windows error sounds?
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^ Good stuff.
Old timey Otis safety-elevator demonstration stuff: https://cimg6.ibsrv.net/gimg/www.mia...337f051313.png |
I just finished watching (for the fourth or fifth time) Moby's Hotel Tour concert. One of the extras had a video that featured kittens:
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Was thinking about those Rubix Cube solving machines.
And also about the guy who offers artisanal pencil-sharpening services. https://cimg5.ibsrv.net/gimg/www.mia...85298b121c.png Thinking about constructing a rubix-solving machine and then offering a service wherein people can mail me their rubix cubes, I will solve them, and then mail them back. |
Artisanal pencil sharpener calls it quits - Home | As It Happens | CBC Radio
CO: What is the price of sharpening a pencil to be now? DR: For the past few years it has been $40 per pencil. But now, I just bumped it up to $500, which is a pretty big price bump. I'm intrigued to see if anyone takes me up on it. "I've always wondered why I haven't heard from Kanye West about my services." - Artisanal pencil sharpener David Rees Dafuq? |
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Originally Posted by Joe Perez
(Post 1392286)
Was thinking about those Rubix Cube solving machines.
And also about the guy who offers artisanal pencil-sharpening services. https://cimg5.ibsrv.net/gimg/www.mia...757087d97d.png https://cimg6.ibsrv.net/gimg/www.mia...b5103abf14.png https://cimg7.ibsrv.net/gimg/www.mia...30999725e0.png |
Backstory:
Pulled engine, mounts are torn. Again. Don't have much faith in tornagain mounts. So I decided to make my own. But, without off the shelf control arm bushings. The goal is to eliminate engine vibrations while keeping it in place under load. Long story short, the project is coming along nicely. I will start a dedicated thread when they are done, but wanted to share the progress anyway. Polyurethane mold: https://cimg5.ibsrv.net/gimg/www.mia...eedd6afd8c.jpg https://cimg8.ibsrv.net/gimg/www.mia...5f63c08ae4.jpg I only need 4 bushings, but I poured two sets, one straight up PU, one hybrid, with steel jacketed rubber in the center... https://cimg9.ibsrv.net/gimg/www.mia...6def46eb61.jpg https://cimg1.ibsrv.net/gimg/www.mia...90cc605416.jpg I mocked them up this evening, to get ready to weld everything tomorrow: https://cimg7.ibsrv.net/gimg/www.mia...61177dca92.jpg https://cimg9.ibsrv.net/gimg/www.mia...c4dc860cd8.jpg https://cimg2.ibsrv.net/gimg/www.mia...963ca70d90.jpg https://cimg6.ibsrv.net/gimg/www.mia...f8cd38bfde.jpg I used 5 mm steel, and plasma cut individual components. I will "lighten" the metal once I am satisfied with the mounts. It will mean re-touching the cad files and plasma cutting new pieces. (yay, gives me something to do..) I am using Grade 12.9 hardware throughout. No need to take chances with an engine mount. I will sandblast and powdercoat these babies. I'm thinking bright red. In my search for "proper" PU, I found a company that specializes in military grade stuff. This particular polyurethane withstands 40000 (forty thousand) G, and is used in Howitzer projectile plugs to protect the circuit boards that transmit flight and GPS data. Pretty amazing stuff. There were tons of calculations on shore hardness, material thickness, diameter, damping, free vs enclosed compression, you name it. Like I said, gives me something (productive) to do. |
Pure insanity. I love it.
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Originally Posted by Godless Commie
(Post 1392336)
(engine mounts)
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Would someone who works as a design engineer for an elevator company please explain something to me?
Why, at 7:30am on a weekday, are all three elevators in the 28-55 block of a residential building parked motionless on the first floor? This is the time of day when people are coming *down* from their condos to go to work. At least two of the three cars should automatically move themselves to the upper floors when idle. I propose and 37 and 46. Same goes for 6:30pm the same evening, but in reverse. There's no reason I should walk up to the upper elevator bank and see 37-52-45, with all three stationary. 2 of 3 should be at 1 after 4, any time they are not responding to commanded movement. Predictive recall, anyone? https://cimg2.ibsrv.net/gimg/www.mia...c1a50663fd.jpg |
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Originally Posted by Joe Perez
(Post 1392451)
Would someone who works as a design engineer for an elevator company please explain something to me?
Why, at 7:30am on a weekday, are all three elevators in the 28-55 block of a residential building parked motionless on the first floor? This is the time of day when people are coming *down* from their condos to go to work. At least two of the three cars should automatically move themselves to the upper floors when idle. I propose and 37 and 46. Same goes for 6:30pm the same evening, but in reverse. There's no reason I should walk up to the upper elevator bank and see 37-52-45, with all three stationary. 2 of 3 should be at 1 after 4, any time they are not responding to commanded movement. Predictive recall, anyone? What would really be tits is if everybody in the building carried a chip or some sort of RFID on them: 1: You had a trigger pad on your front door that you swiped as you walked out into the hallway... save a few seconds getting that elevator moving. 2: There was a scanner in the front door of the building that activated as you walked into the lobby... save a few seconds there too. The chips would be programmed for your floor and an algorithm would continually compute as it received pings for particular floors... shouldn't be too damned hard to manage. It wouldn't mean the elevator would always be there waiting for you, but seconds add up. Plus, that kind of system WOULD save wear&tear on components by optimizing movement. Obviously you would still have buttons on each door and have to push the button once inside the elevator for the actual floor you wanted in case you weren't going directly to the lobby or your floor, but 19/20, it would be predictive enough to be worth it? Plus, it would know if you go into the elevator or not, and could keep that in the algorithm so if you forgot your keys and had to run back into the apartment and missed the car, the next one would stop. Yes? Maybe? https://cimg3.ibsrv.net/gimg/www.mia...e2b696f7cc.jpg |
A learning algorithm could weigh the variables and come up with an optimized pattern.
Kind of like one of these: https://cimg2.ibsrv.net/gimg/www.mia...b8348e8fa4.jpg |
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The elevators remain where they were deposited by their most recent occupants. There is no reason to move them when no demand has been made. It is an on demand system. To move them when there is no demand is, as pointed out, excess wear for no reason.
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Originally Posted by sixshooter
(Post 1392541)
The elevators remain where they were deposited by their most recent occupants. There is no reason to move them when no demand has been made. It is an on demand system. To move them when there is no demand is, as pointed out, excess wear for no reason.
Originally Posted by samnavy
(Post 1392509)
What would really be tits is if everybody in the building carried a chip or some sort of RFID on them:
1: You had a trigger pad on your front door that you swiped as you walked out into the hallway... save a few seconds getting that elevator moving. 2: There was a scanner in the front door of the building that activated as you walked into the lobby... save a few seconds there too. Everyone who lives here has one of these: https://cimg8.ibsrv.net/gimg/www.mia...40e932491c.png To enter the residential section of the building, you swipe it either when walking past the security desk in the front lobby, when entering next to the mail room from the parking garage, when moving from the freight elevator lobby to the main elevator lobby, or when coming into the elevator lobby the back way through the retail section of the building. But it's not tied to the elevator system... And, honestly, there are like 900 condos in this building, and so many people coming and going during commute hours that you really don't need that level of detail. At 6pm, someone will *always* be waiting at both banks of elevators on the first floor, and at 7am, people will *always* be waiting on the upper floors to go down. Fun fact: you can bypass the keyfob security by entering the building through the main front door, walking past the doorman and going down the staircase to the package room in the upper basement, then walking past the package room towards the laundry room, entering the freight elevator from B1, and then taking it up to the 2nd floor. From there, you can exit and transfer to the 2-28 elevator, and if you take that to 28, you can transfer to the 28-55 elevator. https://cimg1.ibsrv.net/gimg/www.mia...35f6b76295.png |
Originally Posted by Joe Perez
(Post 1392544)
Fun fact: you can bypass the keyfob security by entering the building through the main front door, walking past the doorman and going down the staircase to the package room in the upper basement, then walking past the package room towards the laundry room, entering the freight elevator from B1, and then taking it up to the 2nd floor. From there, you can exit and transfer to the 2-28 elevator, and if you take that to 28, you can transfer to the 28-55 elevator.
Karp alogrithm. |
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Originally Posted by bahurd
(Post 1392548)
Real secure building... You're right, you must've been a PITA student.
There's a similar trick for getting into the penthouse suite (literally, inside the penthouse suite itself) at the Time hotel on W 49th in Manhattan. No lockpicking required. Discovered that one back in 2010 or thereabouts when I was really bored one evening. Sadly, this was before I had a smartphone, so no pics, only memories. |
I think I understand how Joe learns these "tricks".
He wanders around and tries doors that are otherwise not protected. When they are open, he enters under the presumption that if the door is open and unprotected physically or verbally, that it must be publically accessible. Permission by plausible deniability. https://cimg0.ibsrv.net/gimg/www.mia...ec37bed4e3.png |
Originally Posted by y8s
(Post 1392585)
I think I understand how Joe learns these "tricks".
He wanders around and tries doors that are otherwise not protected. When they are open, he enters under the presumption that if the door is open and unprotected physically or verbally, that it must be publically accessible. Permission by plausible deniability. https://cimg0.ibsrv.net/gimg/www.mia...ec37bed4e3.png Step 2: If confronted, just say "I'm sorry I thought this was the way to...." Step 3: Revert to step 1 and walk away in the other direction. |
Originally Posted by y8s
(Post 1392585)
I think I understand how Joe learns these "tricks".
He wanders around and tries doors that are otherwise not protected. When they are open, he enters under the presumption that if the door is open and unprotected physically or verbally, that it must be publically accessible. Permission by plausible deniability. I've found some cool spaces beneath libraries, in the Atlanta and Chicago airports, *especially* in the Charlotte airport (there's a large conference room with comfy chairs and a very nice bathroom where you can chill if you've got some time to kill after normal business hours at CLT), lots of attics on University campuses, and so on. The only places I've tended to shy away from are things like Grand Central, where the soldiers carry selective-fire rifles and it's public knowledge that there are certain rooms where their orders say to shoot first. |
Originally Posted by bahurd
(Post 1392593)
Step 1: Carry something that makes you look either official or important. If wearing a name badge on a loop turn it around.
Step 2: If confronted, just say "I'm sorry I thought this was the way to...." Step 3: Revert to step 1 and walk away in the other direction. At that yard, workers wear yellow hats, execs wear white. Blue is for engineers, and engineers are assumed to have a reason and authorization to be wherever they are. Even boarded a ship being constructed in the next drydock over from ours for a rival line (Aida) and walked all over it. Nobody ever said a thing to me besides guten morgen. But, to be honest, I'm always a little more nervous when pulling that kind of stunt than when spelunking. Closest I ever came to getting caught was about 15 years ago in Mason, OH. Decided to enter (during late evening, not quite night) the main building of the former Voice of America Bethany complex, which had been shut down a few years prior. Got inside and noticed that it had apparently been given over to administrative offices for various city / county agencies. But it still had a lot of the original stuff that gave it a groovy cold-war vibe, like the huge map of the world with little light bulbs that showed the operating status of all of the repeaters and transmitters around the globe, above the big mahogany table with the heavy glass ashtrays. Then I noticed the red light on the motion sensor. I hauled ass out of there, and had just turned back out onto the main road about a quarter-mile before when the police car went screaming by my in the other direction. He couldn't have possibly seen me turn out of the long dirt road leading up to the building. I never did notice whether there was a security camera that got a good look at me. Major lapse of situational-awareness on my part, and I've become a lot more careful since then. |
I was caught in and thrown out of an unsecured secure area of infield turn 1at the Daytona International Speedway during the Rolex 24 last month. Security guy walking by did a double take and wanted a closer look at my badge. If I go back again I'll try to mimic the guys emptying the trash cans if I can find an empty can and a hand truck. If you are wheeling around a garbage can and wearing a safety vest you can go anywhere.
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Welding and test fitting done.
And, by done, I mean nicely done. Sandblasting and powdercoating tomorrow... https://cimg1.ibsrv.net/gimg/www.mia...ffda1c7039.jpg TIG welded. https://cimg4.ibsrv.net/gimg/www.mia...32fea4bc27.jpg Spare set of bushings. https://cimg6.ibsrv.net/gimg/www.mia...b5bcb9f2d8.jpg https://cimg1.ibsrv.net/gimg/www.mia...9454c8ee33.jpg |
[read in a hillbilly accent]
Them's sum nice lookin' welds there, bubba. [/read in a hillbilly accent] Apparently, the owner of this car is an Egyptian-history buff: https://cimg0.ibsrv.net/gimg/www.mia...dcfbd91ad6.png |
Very nice, Godless Commie. Looks like it'll work well.
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Originally Posted by Joe Perez
(Post 1392657)
Pretty much. I do make a point to be observant for signs, and will generally not trespass in areas so marked. But there's a lot of neat stuff out there that's still accessible.
I've found some cool spaces beneath libraries, in the Atlanta and Chicago airports, *especially* in the Charlotte airport (there's a large conference room with comfy chairs and a very nice bathroom where you can chill if you've got some time to kill after normal business hours at CLT), lots of attics on University campuses, and so on. The only places I've tended to shy away from are things like Grand Central, where the soldiers carry selective-fire rifles and it's public knowledge that there are certain rooms where their orders say to shoot first. Strap on a go-pro wander upload anonymously monetize ???? Profit. |
We need an MT.net TV thread with regularly scheduled episodes of Joe Perez Everything, Monk's Beverage Review, Samnavy Shooty Stuff, and Braineack's Cats.
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Originally Posted by Godless Commie
(Post 1392896)
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I know...
I was merely translating. |
Following up on my earlier elevator rant, seriously, is this so hard?
Lift Traffic Analysis: Formulae for the General Case R D Peters BSc Ove Arup & Partners, 13 Fitzroy Street, London W1P 6BQ, UK Received 11 August 1989 Telephone +44 (0)1494 717821 Fax +44 (0)1494 716647 Email richard.peters@peters-research.com Building Serv. Eng. Res. Technol. 11(2) 65-67 (1990). This web version © Peters Research Ltd 2010. Summary Lift or elevator passenger traffic analysis is generally based on an up peak calculation. Various authors have considered other specific passenger flows for down peak, two-way and interfloor traffic. This paper gives formulae for the general case. The formulae are based on a Poisson approximation of passenger arrivals at a lift landing station. The probable number of stops and probable reversal floors are calculated, allowing the round-trip time, waiting interval and capacity factor to be determined. The number of calculations is such that a computer is needed to implement the formulae, though the final result may be checked by hand. List of Symbols µi Passenger arrival rate at floor i (person s-1) dij Probability of the destination floor of a call from i being the jth floor T Waiting interval (s) N Number of floors Pij(n) Probability of n passengers travelling from the ith to the jth floor in the time interval T Pij Probability of no calls from the ith to the jth floors in the time interval T pS1 Probability that a lift will stop at the lowest floor pUSs, pUS3,...pUSN-1 Probability that the lift will stop at each of the intermediate floors on its' journey up pSN Probability that the lift will stop at the highest floor, N pDSN-1,...pDS 2 Probability that the lift will stop at each of the intermediate floors on its' journey down S Probable number of stops pHn Probability of nth floor being the highest reversal floor pLn Probability of nth floor being the lowest reversal floor H Highest reversal floor L Lowest reversal floor JWI(i,j) Journey waiting interval for passengers travelling from the ith to the jth floor(s) T(n) Waiting interval, zone n SPLIT (Q, i, j) Proportion of passengers travelling from the ith to the jth floor who are using lifts in zone Q 1 Introduction Traditional up peak lift design calculations, though simple and effective, are not always applicable to today’s buildings which may have underground car parks, restaurant floors, etc. Various authors have considered two-way(1), down peak and interfloor traffic. This paper deals with the ‘general case’. The following calculations are based on the fundamental design criterion for a lift system, the round trip time. Formulae are given for the probable number of stops a lift car makes during a round trip and the average highest and lowest reversal floors. Section 6 demonstrates how passenger traffic is split between different groups of lifts which may be of a different size, speed, etc., or which may not serve all the same floors. As the formulae are completely general, it is possible to analyse any practical configuration of lifts (double decker lifts have not been considered, though the theory could be extended to consider these). 2 Poisson approximation It is generally accepted that the arrival of passengers at a lift landing station is reasonably approximated by a Poisson process. This gives us the result: https://cimg5.ibsrv.net/gimg/www.mia...9096b20460.png When calculating probabilities, it is generally easier to calculate the probability of something not happening and then subtract this from 1 to arrive at the probability of the event happening . So, let Pij = Pij(0) which is the probability of no calls from the ith to the jth floor in the time interval T. From),Pij= exp(-µi Tdij) 3 Probable number of stops When calculating the probable number of stops, it is necessary to consider both the up and down journey of the lift, as a lift may stop at a floor twice during a single round trip. The probability of the lift stopping at a floor is one minus the probability that there are no calls to or from that floor. This gives us the results: https://cimg8.ibsrv.net/gimg/www.mia...648645ec88.png https://cimg9.ibsrv.net/gimg/www.mia...23c7966ea3.png https://cimg0.ibsrv.net/gimg/www.mia...a20945f539.png https://cimg1.ibsrv.net/gimg/www.mia...fabab50ddd.png (∏ is a mathematical symbol meaning multiply all the terms over this range.) The total number of stops S is calculated by adding together all the terms: https://cimg2.ibsrv.net/gimg/www.mia...b46d99f92f.png 4 Reversal floors 4.1 Reason for calculation In an ‘average’ journey a lift, in many situations, is unlikely to reach the lowest or highest floor of the building. To make a more accurate calculation of the round-trip time, it is necessary to calculate the average lowest and highest reversal floors, L and H. 4.2 Highest reversal floor The probability of the jth floor being the highest reversal floor is the product of the probability that there is a call from a lower floor to j or from j to a lower floor with the probability that there are no calls to or from floors above j: https://cimg4.ibsrv.net/gimg/www.mia...ef16b44645.png https://cimg5.ibsrv.net/gimg/www.mia...07d03fe8d3.png https://cimg6.ibsrv.net/gimg/www.mia...e752575571.png A good check for this is that: https://cimg9.ibsrv.net/gimg/www.mia...eaff65071b.png Given the probability of each floor being the highest reversal floor, the average highest reversal floor, H is simply: https://cimg1.ibsrv.net/gimg/www.mia...662e77b30d.png 4.3 Lowest reversal floor Similarly, we can calculate the probability of the jth floor being the lowest reversal floor, which is the product of the probability that there is a call from a higher floor to j or from j to a higher floor with the probability that there are no calls to or from floors below j: https://cimg2.ibsrv.net/gimg/www.mia...92393c6265.png https://cimg4.ibsrv.net/gimg/www.mia...b0f33affee.pnghttps://cimg5.ibsrv.net/gimg/www.mia...75031e1bc5.png (13) https://cimg6.ibsrv.net/gimg/www.mia...25b0299fcc.png https://cimg7.ibsrv.net/gimg/www.mia...b258e23168.png 5 Implementing the formulae In a traditional up-peak analysis, a capacity factor of say 80% is assumed and the round trip time and five minute ratio are calculated accordingly. In the general analysis, all the formulae are dependent and solving is only practical using a computer to iterate until a solution is reached. Note that for a general analysis the capacity factor must be calculated and not assumed, as passengers may join or leave a lift at any floor. The ‘average number’ of passengers in the lift car at each stage of the lift’s journey must be assessed and the capacity factor calculated for where the lift is most full. For example, at the ith floor, going up, the number of passengers entering the car is: https://cimg0.ibsrv.net/gimg/www.mia...2dedf929d9.png and the number leaving the car is: https://cimg2.ibsrv.net/gimg/www.mia...d187ac2fa1.png 6 Overlapping Zones 6.1 Definition Lifts which serve the same floors and are of the same size, speed, capacity, etc. may be defned as being in a zone. If different zones do not serve the same floors, we can treat each as being independent, carrying out the calculations already given for each zone separately. However if a passenger could use lifts in either of the two or more zones to make his/her journey, we have ‘overlapping zones’ and need to split up the passenger traffic between the zones before doing the calculations. 6.2 Journey waiting interval To calculate the split of passengers between zones, consider first the journey waiting interval, which is defined for each possible journey. Consider a passenger travelling from the i th to the j th floor. In time t, a lift serving zone 1 arrives at floor i t/T(1) times. If both floors are also served by zone 2, then a lift arrives at floor i from zones 1 or 2 t/T(1)+t/T(2) times. So the journey waiting interval is given by https://cimg4.ibsrv.net/gimg/www.mia...fb21642d51.png https://cimg5.ibsrv.net/gimg/www.mia...6e2a512295.png Taking the general case, we get: https://cimg6.ibsrv.net/gimg/www.mia...698d476984.png (16) where {Z} = {all zones serving both the ith and the jth floor} 6.3 Split of passengers between zones In time t, a lift from zone Q arrives at i t/T(Q) times; therefore https://cimg7.ibsrv.net/gimg/www.mia...8f0a6b2dd6.png https://cimg0.ibsrv.net/gimg/www.mia...ac25c2ac93.png https://cimg1.ibsrv.net/gimg/www.mia...3eb38c25a5.png 6.4 Implementing the formulae The calculation for split requires another iteration as split and waiting intervals depend on each other. Again, the only practical way to implement the formulae is by using a computer, though the results may be checked by hand. References
https://www.peters-research.com/inde...e-general-case |
^ Observations:
1) Report is bogus as it is written in Queen's English, rather than American. 2) Authors are wonderful because they showed both original publication date and the posted date. This is sorely lacking in much of Interweb information 3) Shows that such algorithms have been considered, and even written. However, we do not know if they have ever been implemented (apparently not in your apartment building). 4) Is the reason for (3) above laziness on the part of designers, or truly a wear-and-tear fear? |
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