Ah, so the rent is too damn high everywhere. How are we going to solve this problem?
Also, I’m curious as to what the rent is in NYC compared to the rest of the state. I’m sure upstate is dragging that average way down. And look at Hawaii. Wow.
(Source: mattspaul)
Waiting for a bus? Math may help
(Via CNN)
Georgia Tech student Alexandra Gaigelas takes a shuttle bus to get around the Atlanta campus. Many times, she waits too long for a bus.
“There’s nothing more frustrating than standing at a stop, waiting for 10 minutes, getting on the bus and seeing another bus directly behind you.”
And that second bus is largely empty. It’s called bus bunching, and it happens when buses are thrown off schedule because of traffic, weather or too many passengers at one stop.
And when those buses are off schedule, the drivers try to adjust. Student Sukirat Bakshi says he’s been victim of a bus “drive-by.”
“It happened to me where the driver just would not stop at a stop. They would just run off to catch up to the schedule.”
It turns out math can fix the problem. Georgia Tech professor John Bartholdi and University of Chicago professor Donald Eisenstein used complex algebra to develop a kind of anti-bus-bunching formula. They took what’s known as the Markov Chain through the wringer. It’s a math theory that shows predictable long-term behavior.
“The trick is to hold the bus for an adjustable amount of time at one stop,” Bartholdi said. “We simply control how long they wait at the end of the route, and then we tell them, ‘drive comfortable with the traffic to the other end. Don’t worry about where you are. Just flow with the traffic.’ “
Buses in the loop are all connected through GPS and a computer pad. It signals to the driver when it’s time to leave. Georgia Tech is testing the theory on its shuttle system.
“This tells me exactly when it’s time to go, and the communication between each other is done automatically, so it takes a lot of stress from us,” said Clarence July, who drives one of the gold and yellow Georgia Tech buses.
Drivers can ignore the schedule, and riders on campus can walk up to any stop and know that a bus will come within approximately six minutes. Bartholdi and Eisenstein say their math formula works for any shuttle system that runs in a loop in which buses are no more than about 12 to 15 minutes apart.
“Others have tried to control buses by asking drivers to try to adhere to a target schedule,” Bartholdi said. “What is new here is that the buses in effect coordinate themselves. No one needs to tell the drivers what to do; no one needs to worry about being off-schedule or how to recover a lost schedule.”
Georgia Tech plans to fully implement the no schedule bus system on campus this fall.
Here’s how Bartholdi explains the equations used to calculate the space between buses:
This equation is actually a bunch of equations: one for each bus. The first line describes how the headway (the space between buses) changes for the bus that is currently at the end of the route (the turnaround point). Alpha (in red) is a control parameter - a number, say, 0.5 - by which the bus manager chooses whether the bus should wait longer (and fix imbalances faster) or vice versa. The “v” is the average velocity of the buses.
The second line describes how the headways of the other buses change.
This collection of equations describes how the headways change from bus arrival t to the next bus arrival t+1. In other words, it predicts the future behavior of all the buses.
Don Eisenstein and I recognized that this set of equations has a very special algebraic structure: they describe a “Markov Chain,” which is a sequence of events for which the future can be predicted by knowing merely the current state (no history is needed). In our case, we only need to know the most recent headways to predict the next headways, and the headways after those, and so on.
The theory of Markov Chains allows us to conclude that, in the absence of disruptions, the headways will move inexorably and quickly toward a common value, which is given in the equation above. What this means in practice is that the buses will move away from each other, to space themselves more evenly. In other words, we will have created a force, a sort of “anti-gravity” that pushes the buses apart and so resists bunching.
This would be great. Maybe this can answer the question “Why have 5 buses in the opposite direction gone by this bus stop in the past 5 minutes while the bus I do need hasn’t shown up for half an hour?”
The woman of the year 2000 will be an outsize Diana, anthropologists and beauty experts predict. She will be more than six feet tall, wear a size 11 shoe, have shoulders like a wrestler and muscles like a truck driver.
Chances are she will be doing a man’s job, and for this reason will dress to fit her role. Her hair will be cropped short, so as not to get in the way. She probably will wear the most functional clothes in the daytime, go frilly only after dark.
Slacks probably will be her usual workaday costume. These will be of synthetic fiber, treated to keep her warm in winter and cool in summer, admit the beneficial ultra-violet rays and keep out the burning ones. They will be light weight and equipped with pockets for food capsules, which she will eat instead of meat and potatoes.
Her proportions will be perfect, though Amazonian, because science will have perfected a balanced ration of vitamins, proteins and minerals that will produce the maximum bodily efficiency, the minimum of fat.
She will go in for all kinds of sports – probably will compete with men athletes in football, baseball, prizefighting and wrestling.
She’ll be in on all the high-level groups of finance, business and government.
She may even be president.
2012: GLORIOUS FEMALE WARRIORS
They were totally right about this. All adult women are at least 6’ and dressed like Xena.
New York is changing. The dominoes are falling. The crumbling relics are being replaced by shiny sterile pseudo-edgy boxes. Manhattan is overpriced and will continue to be until the apocalypse. Brooklyn is the new Manhattan. Queens is the new Brooklyn. The Bronx is the new Queens. Staten Island still is, and will always be, Staten Island. The rent is still too damn high, and it’s never going to go down. The city I love is disappearing, yet part of me believes there is hope of finding new worthwhile places and experiences.
