I'll post market design related news and items about repugnant markets. See also my Stanford profile. I have a general-interest book on market design: Who Gets What--and Why The subtitle is "The new economics of matchmaking and market design."
"A black market in Jewish graves is hiding in plain sight on the classified pages.
"Defunct Jewish burial societies have been selling cemetery plots at bargain basement prices through classified ads on Craigslist and in the print edition of the Forward — even though New York and New Jersey state laws bar these sales.
"Each sale of a New York grave by a burial society on the open market could be punishable by up to six months in jail, according to the state’s top cemetery regulator, though no one has ever been prosecuted. New Jersey law carries no such penalties, but still prohibits the sales.
...
"Only cemeteries are generally allowed to sell cemetery plots on the open market in New York and New Jersey. But in the two states’ Jewish cemeteries, mutual aid societies, called landsmanschaften, own huge inventories of empty graves. Founded at the turn of the past century by Jewish immigrants from the same town or region in Europe, the societies bought up large tracts of cemetery land, erected stone gates lined with the names of the societies’ officers and readied plots for their dues-paying members.
"Today, many of those societies and congregations have disappeared, leaving behind empty, unclaimed graves.
"As the societies have withered away, control of the organizations and their assets has passed down within families. The officers who now run the landsmanschaften — often the children or grandchildren of earlier officers — have found themselves responsible for cemetery land worth hundreds of thousands of dollars."
"He may be the chief executive of Denver’s largest marijuana dispensary, ground zero for America’s fastest growing industry, but Andy Williams struggles with a lot of financial hurdles.
The First Bank of Colorado closed the accounts of everyone in the family business, Medicine Man Technologies, including children who have no part in the industry. Williams can’t take on any investment and needs to fund expansion through personal loans from friends and family.
Customers can only pay in cash; banks refuse to hold his money and everyone from employees to contractors need to accept cash payments. Employees, who can’t prove their income as a result, often struggle to get loans and mortgages.
Furthermore, section 280E of the US tax code prohibits the deduction of expenses related to controlled substances for tax purposes, and Williams predicts that he gives the internal revenue service an additional $600,000 each year as a result of business expenses that can’t be written off.
While recreational marijuana legalisation is well on its way in states like Colorado, it remains illegal at the federal level, stifling the growth and innovation of the industry’s first movers.
Meanwhile, north of the border, Canadian prime minister Justin Trudeau has vowed tolegalise recreational marijuana consumption on a federal level, opening the door to investment, less restrictive tax policies and banks that can treat the marijuana industry like any other. While legalisation hasn’t yet taken place in Canada, when it inevitably does American marijuana businesses may suddenly find themselves at a disadvantage."
8:30 – 9:00 AM: REGISTRATION AND BREAKFAST 9:00 – 9:15 AM: INTRODUCTION Dean Peter Henry, NYU Stern School of Business 9:15 – 10:15 AM: SESSION 1: KEYNOTE ADDRESS “Kidney Exchange: Where We Are and Where We May Be Going,” Alvin Roth, Craig and Susan McCaw Professor of Economics and 2012 Nobel Memorial Prize Recipient in Economic Sciences, Stanford University 10:15 – 10:30 AM: BREAK 10:30 – 12:00 PM: SESSION 2: RIDE-SHARING AND ON-DEMAND PLATFORMS Talks: “Operations in the On-Demand Economy: Staffing Services with Self-Scheduling Capacity,” Martin Lariviere, John L. and Helen Kellogg Professor of Managerial Economics & Decision Sciences, Kellogg School of Management “Surge Pricing at Uber,” Garrett Van Ryzin, Head of Dynamic Pricing Research, Uber; Paul M. Montrone Professor of Private Enterprise, Columbia Business School “Smarter Tools for (Citi)Bike Sharing,” David Shmoys, Laibe/Acheson Professor of Business Management and Leadership, Cornell University 12:00 – 1:30 PM: LUNCH (ROOM 5-50, 5TH FLOOR) 2 1:30 – 2:30 PM: SESSION 3: EMPIRICS OF PRICING Talks: “Monitoring Costs and the Design of Online Marketplaces,” Kostas Bimpikis, Associate Professor of Operations, Information and Technology, Stanford GSB “Price Floors and Preferences: Evidence from a Minimum Wage Experiment,” John Horton, Assistant Professor of Information, Operations and Management Sciences, NYU Stern School of Business 2:30 – 2:45 PM: BREAK 2:45 – 4:15 PM: SESSION 4: TRUST AND REVIEWS Talks: “The Welfare Impact of Consumer Reviews: A Case Study of the Hotel Industry,” Greg Lewis, Senior Researcher, Microsoft “Provably Trustworthy Dark Pools,” David Parkes, George F. Colony Professor of Computer Science and Area Dean for Computer Science, Harvard University “The Effect of Online Reviews on Physician Demand: A Structural Model of Patient Choice,” Mor Armony, Associate Professor of Information, Operations, & Management Sciences, NYU Stern School of Business 4:15 – 4:45 PM: BREAK 4:45 – 5:45 PM: SESSION 5: DIGITAL ADVERTISING AND AUCTIONS Talks: “Online Mechanisms for Repeated Auctions and Ad Selection,” Vahab Mirrokni, Principal Researcher, Google “Bundling Over Time and Martingale Auctions,” Santiago Balseiro, Assistant Professor, Decision Sciences, Duke University
Here's a video of the plenary talks/announcements at the White House Organ Summit yesterday. I give the last brief talk, from minute 43-48. (5 minute talks are hard:). I report on the plan to start some nondirected donor kidney exchange chains with deceased donor kidneys at Walter Reed, which has some flexibility in the allocation of deceased donor kidneys.
Here's the text of my five-minute speech (which I wrote out in advance, to stay on script and keep on time):
"White House
Organ Summit: Deceased Donor Chains
I’m Al Roth,
an economist at Stanford.
Most people
waiting for transplants are waiting for kidneys. And kidneys are special,
because healthy people have two and can remain healthy with one. So kidneys can
be donated by living as well as deceased donors. Each year in the U.S. we transplant over
5,000 living donor kidneys, along with over 11,000 deceased donor kidneys.
Kidney transplantation is also special: it is both
the best treatment for kidney failure, giving recipients many more years of
life—and it is also the cheapest treatment. The American health care system
saves over $250,000 in five years after a transplant, because dialysis is much
more expensive than transplantation and post-transplant care.
I’m going to tell you now about how
some living donor kidney transplants are organized, as background for one of
the quite concrete announcements we have today.
Sometimes a
person is healthy enough to donate a kidney but can’t give to the patient he
loves, because kidneys have to be biologically compatible. This opens up the
possibility of kidney exchange (and exchange is where economists come in).
Kidney exchange is a kind of matching market in which
patient-donor pairs can donate compatible kidneys to one another so that each
patient gets a compatible kidney. For example, if you and I are healthy enough
to donate a kidney, but can’t donate to the patient we love, maybe my kidney is
compatible with your patient and yours with mine, and so a simple exchange
between two patient-donor pairs can make two additional transplants possible.
In the last 10-15 years, kidney exchange has become a standard part of American
medicine, resulting in thousands of additional transplants.
Sometimes a non-directed donor comes
forward—an altruistic donor who wishes to donate a kidney, and doesn’t have a
particular patient in mind. These donors can spark chains of transplants that
help patient-donor pairs in the kidney exchange pool, and patients on the deceased
donor waiting list who don’t have a living donor. Some of these chains can
produce many transplants, ever since we have learned to organize them as Non-simultaneous
chains, in which the non-directed donor initiates a chain by giving to a
patient-donor pair whose donor then gives to another pair, etc., most often
ending with a donation to someone on the waiting list who doesn’t have a living
donor. These chains can be long because
they don’t have to be conducted simultaneously since every pair receives a
kidney before giving one, so that they don’t risk giving a kidney and not
getting one. Mike Rees who is here today
organized the first non-simultaneous chain, which had twenty people--ten donors
and ten transplant recipients--in the picture that was eventually published in
People Magazine.
The average
non-directed chain produces five transplants. That is, if someone offers to
donate a kidney to start a chain - someone offering to help a stranger with
this amazing gift of a kidney and a life free from dialysis - then on average,
that one donor's gift will start a chain which produces 5 transplants
With that in
mind, earlier this year, several eminent surgeons and I published an article in
the American Journal of Transplantation noting that deceased donor kidneys are
almost all non-directed. So we proposed that we should occasionally start non-directed
donor chains with deceased donor kidneys – which are non-directed donor kidneys
that today are used to produce just a single transplant. Carefully done, this
could substantially increase the number of transplants for all patients –both
those waiting without a living donor and those waiting for a kidney exchange.
Today,
surgeons at Walter Reed who are here today have announced that they are going
to pilot this idea through the military share program, which gives
them the flexibility to allocate certain deceased donor kidneys to the benefit
of veterans and service members. This new initiative at Walter Reed may soon
show us how to move forward on a larger scale in using some deceased donor
organs to start chains of multiple transplants.
To
summarize, kidney chains can play an important role in increasing transplants.
Since the first long non-simultaneous non-directed donor chain was organized by
Dr Rees in 2007, thousands of kidney exchange transplants have been
accomplished, more than half through non-directed donor chains. These save both
lives and money by increasing the number of transplants. So we should take good
care of our non-directed living donors—and there is growing consensus that we
should at least figure out ways to reimburse all donors for their financial costs,
including lost wages. And we should, in gratitude to our deceased donors, make
the best use possible of their non-directed donation.
I’d like to
personally thank Walter Reed for their initiative in pioneering the use of
deceased donor kidneys to start kidney exchange chains that will increase
donations and benefit both those waiting for deceased donors and those waiting
for exchange with other patient donor pairs. Starting kidney transplant chains
with deceased donor kidneys has the potential to be a very significant
innovation."
****************
Here's a link to my post on our AJT article (by Melcher, Roberts, Leichtman, Roth, and Rees) advocating for starting kidney exchange chains with deceased donor kidneys:
"BETHESDA, Md., June 13, 2016 — Walter Reed National Military Medical Center officials today announced a pilot program to pioneer kidney paired donation chains started via the military share program, in which families of active duty military service members donate one of their kidneys to patients listed for transplant at the medical center’s campus here.
...
""We are excited to participate in this initiative, which has the potential to increase organ allocation for our patients,” Navy Capt. (Dr.) Eric Elster, professor and chairman of surgery at the Uniformed Services University of Health Sciences and Walter Reed National Military Medical Center said. “While it will require overcoming logistical barriers, we in military medicine excel at such challenges."
Walter Reed surgeons perform an average of 25 transplants per year on patients from across the country, and the medical center also maintains a living donor kidney transplant program that participates in national paired kidney exchanges.
Army Maj. (Dr.) Jason Hawksworth, transplant chief at Walter Reed, said his team “looks forward to contributing to the innovative initiative that may exponentially increase the availability of life-saving transplants on patients throughout the nation."
According to the Scientific Registry of Transplant Recipients, a regulatory body that tracks transplants, Walter Reed has the best organ transplant outcomes in the greater Washington-Baltimore region."
I'm catching an early flight from Boston to DC this morning. I expect there may be more to report later...
White House summit on increasing organ donation
"The White House will host an Organ Summit. At the summit, the administration and private entities will announce a new set of actions that will build on the administration’s previous accomplishments to improve outcomes for individuals waiting for organ transplants and improve support for living donors. This event will be webcast live at www.whitehouse.gov/live. The event will take place Monday, June 13, from 10:30 am-12:30 pm EDT."
"The idea for a body transplant is the kind of thinking that has experts around the world alarmed at how far China is pushing the ethical and practical limits of science. Such a transplant is impossible, at least for now, according to leading doctors and experts, including some in China, who point to the difficulty of connecting nerves in the spinal cord. Failure would mean the death of the patient.
The orthopedic surgeon proposing the operation, Dr. Ren Xiaoping of Harbin Medical University, who assisted in the first hand transplant in the United States in 1999, said he would not be deterred. In an interview, Dr. Ren said that he was building a team, that research was underway and that the operation would take place “when we are ready.”
His plan: Remove two heads from two bodies, connect the blood vessels of the body of the deceased donor and the recipient head, insert a metal plate to stabilize the new neck, bathe the spinal cord nerve endings in a gluelike substance to aid regrowth and finally sew up the skin.
Whether or not he performs the operation, leading medical experts have condemned the plan.
“For most people, it’s at best premature and at worst reckless,” said Dr. James L. Bernat, a professor of neurology and medicine at the Geisel School of Medicine of Dartmouth College.
Dr. Huang Jiefu, a former deputy minister of health in China, said in an interview in November that when the spine is cut, the neurons “cannot be reconnected, so it’s scientifically impossible.”
“Ethically it’s impossible,” Dr. Huang added. “How can you put one person’s head on another’s body?”
He talked to lots of people exploring different approaches, including incentives and outreach, and kidney exchange chains (and his article is full of interesting links, if you're interested...)
"On Thursday, California became the fourth state in the country to put in effect a law allowing assisted suicide for the terminally ill, what has come to be known as aid in dying. Lawmakers hereapproved the legislationlast year, after Brittany Maynard, a 29-year-old schoolteacher who had braincancer, receivedinternational attentionfor her decision to move to Oregon, where terminally ill patients have been allowed to take drugs to die since 1997.
Oregon was the first state to pass an assisted suicide law, and was followed by Washington and Vermont. Under a Montana court ruling, doctors cannot be prosecuted for helping terminally ill patients die, as long as the patient makes a written request. With the California law, 16 percent of the country’s population has a legal option for terminally ill patients to determine the moment of their death, up from 4 percent.
In the states with assisted suicide laws, the number of people who request and take medication to hasten dying has steadily increased. In Oregon, for example, 16 people ended their lives under the law in 1998, and by 2015, that number had grown to 132.
The California legislation is strict, intended to ensure that patients have thought through the decision and are making it voluntarily. Patients must make multiple requests for the medication and have a prognosis of less than six months to live.
Many hospitals have not yet released policies for dealing with the law. And no doctor, health system or pharmacy will be required to comply with a patient’s request. Doctors who object to the practice are not even required to refer patients who request the medication to another physician.
Roman Catholic and other religious health systems have said they will not participate. “We are crossing a line — from being a society that cares for those who are aging and sick to a society that kills those whose suffering we can no longer tolerate,” José H. Gomez, the Catholic archbishop of Los Angeles, said in a statement Wednesday."
"A week ago, the following question
was asked on a popular Israeli web forum that discusses legal questions: The
author says that he and his wife agreed with their neighbor and his wife that
they will exchange partners for a day: the neighbor will be with the author's
wife for one day, and after the neighbor's wife returns from her current trip
abroad, she will be with the author for a day. As you can already imagine, the
author writes that the first part happened, but when the neighbor's wife
returned from abroad, the neighbor and his wife denied any such agreement and
ignored the author's messages. The author says that he has text messages on his
phone to prove the agreement and that he spent a considerable amount of money
on beverages for the intended day with the neighbor's wife, and asks the
readers of the web forum whether he has a cause for legal action against the
neighbor and his wife for violating the agreement.
The international transplant community portrays organ trade as a growing and serious crime involving large numbers of traveling patients who purchase organs. We present a systematic review about the published number of patients who purchased organs. With this information, we discuss whether the scientific literature reflects a substantial practice of organ purchase. Between 2000 and 2015, 86 studies were published. Seventy-six of these presented patients who traveled and 42 stated that the transplants were commercial. Only 11 studies reported that patients paid, and eight described to what or whom patients paid. In total, during a period of 42 years, 6002 patients have been reported to travel for transplantation. Of these, only 1238 were reported to have paid for their transplants. An additional unknown number of patients paid for their transplants in their native countries. We conclude that the scientific literature does not reflect a large number of patients buying organs. Organ purchases were more often assumed than determined. A reporting code for transplant professionals to report organ trafficking networks is a potential strategy to collect and quantify cases.
++++++++
Just
want to share a post I saw on China’s social media today.
This
week is China’s college entrance exam (Gaokao), and a high-profile social media
account featured your book and the matching algorithm in a post about the
college admission system in China. See picture #1: the title of the post reads
“One algorithm that solves the challenges of college admission”, and you can
see the cover of your book below. The abstract reads: “Rarely is economics this
useful and pragmatic — a classic algorithm can potentially lead China’s college
admission system out of trouble, solving the lose-lose situation currently
faced by students and universities.”
And
when you click on the article, you see Picture #2, which is a signal that the
article has been censored and content deleted. College admission system in
China has been fiercely debated and it is become quite a sensitive topic!
Transplantation: Together with a team at Johns Hopkins, you have been the first to perform laparoscopic donor nephrectomies. Would you mind sharing aspects of your personal journey leading to this surgical success with us?
LR: When first introduced in 1995, laparoscopic live donor nephrectomy was a novel, radical, and controversial concept. However, there was an antecedent history of about 10 years, which I witnessed. When I was a general surgery resident at Long Island Jewish Hospital, the Chairman of Urology and pioneer of endourology, Dr. Arthur Smith, was the first person to propose a minimally invasive nephrectomy for disease. Smith’s idea was to place a percutaneous nephrostomy tube into the kidney and allow a tract to form. Then, when the tract was sufficiently fibrosed, he proposed that a Resect-o-scope (like that used for TURPs or TURBTs) be passed through the tract and the kidney be resected from the inside out. Jerry Weinberg, a GU resident who worked with Smith eventually published the first experimental series of minimally invasive nephrectomies in a large animal model. In that series, Weinberg and Smith thrombosed the renal vessels radiologically, then fragmented the kidney with ultrasound, and finally removed the fragments laparoscopically.
During my transplant fellowship at Washington University, Ralph Clayman, with the assistance of his fellow Lou Kavoussi, performed the first laparoscopic nephrectomy for disease. In that first case, Clayman had the renal vessels thrombosed by interventional radiology followed by a laparoscopic nephrectomy. This initial case took approximately 12 hours. However, within 1 year, Clayman had reduced the operating time to approximately 4 hours, no longer requiring radiologic thrombosis of the renal vessels.
As part of a faculty position that I took subsequently at Johns Hopkins University, I directed a satellite renal transplant program at Bayview Medical Center (formerly Baltimore City Hospital). Together with Lou Kavoussi, the newly recruited Chief of Urology, we decided to perform laparoscopic live donor nephrectomies. Our goal was to remove logistical and financial disincentives to living kidney donation by reducing pain, length of stay, and recovery while improving cosmesis. In the mean time, Clayman’s group demonstrated in a large animal model that laparoscopically procured kidneys could be successfully transplanted. Finally, after identifying the right patients, Kavoussi and I performed the first laparoscopic donor nephrectomy in February 1995. The donor went home on postoperative day 1 and was back to work as a welder within 2 weeks. The recipient was discharged after an uneventful hospitalization with a creatinine of 0.8 mg/dL. From there, dissemination and adoption of the laparoscopic donor nephrectomy operation was largely patient driven.
Transplantation: Donor nephrectomies were discussed controversially in the 1990s. Can you share early challenges of outcomes and responses of the public, health professionals, and patients with us?
LR: The first manuscript describing the initial case report and technical aspects of the operation was flat-out rejected. After a rebuttal, the manuscript was accepted without revisions. A large portion of the transplant community could not conceive how we could do this laparoscopic operation safely. When we presented our data, people angrily stood up and told us that we were “amoral and that we were going to kill people.” I had nightmares every night for 2 years.
...
Transplantation: You have been a pioneer in paired kidney exchanges. How do you envision a further expansion?
LR: I believe that kidney-paired donation has not yet reached its maximal potential. The most attention has been paid to optimizing allocation algorithms. However, logistical and financial issues remain important, under-addressed obstacles. These need to be dealt with before we can expect further expansion.
Additionally, compatible pair participation in KPD is the most effective way to increase the desperately needed blood group O donors. However, this represents a major paradigm shift, where living donors are converted from a private resource to a shared or public resource. This will take years to gain widespread acceptance. Finally, I think that consideration should be given to using deceased donor organs to kick off living donor chains."
Max Bazerman just sent an email saying that Keith Murnighan passed away this morning. He was in hospice care, after a long brave fight, chronicled on his blog keithkickscancer.
I last saw him a little over a month ago, on April 28. Here's a picture of the two of us, taken in a happier time at Northwestern in May 2010.
He was an exceptional person, an important scholar of human behavior in organizations, and an old friend. For now it will be easiest to say some things about his scholarship.
That paper was in a journal (ASQ) that decorated its cover with photos and other artwork. Keith was a passionate photographer (he earned an MFA in photography at the U of Illinois when we were on the faculty there), and I know that at least several ASQ covers featured Keith's photos.
Keith's scholarly impact has kept growing: here's a graph of his citations over time from the Thompson-Reuters Web of Science
*********
I learned a lot from Keith. Here is a paragraph from the autobiography I was asked to write in connection with the Nobel Prize:
"My arrival at Illinois is memorable for two psychologists I met there in my first year. The first, in the first weeks after my arrival, was my colleague Keith Murnighan. We were both new assistant professors in 1974. He had just received his Ph.D. in social psychology from Purdue. One of our senior colleagues suggested we would enjoy talking to each other, and we did, so much so that we decided to do some experiments together, on the kinds of games I had studied in my dissertation. Experiments were newer to me than game theory was to him, but over the course of the next decade we taught each other how to do experiments that would say something useful about game theory. He and I remember our early interactions differently, but we both agree that our first papers took many drafts to converge. Eventually we wrote a dozen papers together, exploring various aspects of game theory including the game theoretic predictions made by theories such as Nash's (1950) "solution" to the problem of determining the outcome of two-person bargaining. (Game theory was young, and many things that today would be called models of behavior, or kinds of equilibrium, were optimistically called "solutions," following von Neumann and Morgenstern.) Keith and I, together with my graduate student Mike Malouf and our colleague Francoise Schoumaker, developed some experimental designs (such as binary lottery games, see Roth and Malouf, 1979, or probabilistically terminated repeated games, see Roth and Murnighan, 1978) that remain in use today. In 1978 I also took a semester leave at the Economics Department at Stanford, where I taught a course whose lecture notes became my first book, Axiomatic Models of Bargaining (Roth, 1978). Axiomatic theories of the kind initiated by Nash were beautiful, and I enjoyed pushing the theory forward, but their failure to account for the kinds of behavior we observed so clearly in experiments convinced me that these too were a dead end for economics. *********
Our own collaboration spanned thirty years:
Murnighan, J.K. and Roth, A.E. "The Effects of Communication and Information Availability in an Experimental Study of a Three Person Game," Management Science, Vol. 23, August, 1977, 1336-1348.
Roth, A.E. and Murnighan, J.K. "Equilibrium Behavior and Repeated Play of the Prisoners' Dilemma," Journal of Mathematical Psychology, Vol. 17, 1978, 189 198.
Murnighan, J.K. and Roth, A.E. "Large Group Bargaining in a Characteristic Function Game, Journal of Conflict Resolution, Vol. 22, 1978, 299 317.
Murnighan, J.K. and Roth, A.E. "The Effect of Group Size and Communication Availability on Coalition Bargaining in a Veto Game," Journal of Personality and Social Psychology, 39, 1980, 92 103.
Roth, A.E., Malouf, M., and Murnighan, J.K. "Sociological Versus Strategic Factors in Bargaining," Journal of Economic Behavior and Organization, Vol. 2, 1981, 153 177.
Roth, A.E. and Murnighan, J.K. "The Role of Information in Bargaining: An Experimental Study," Econometrica, Vol. 50, 1982, 1123 1142.
Murnighan, J.K. and Roth, A.E. "Expecting Continued Play in Prisoner's Dilemma Games: A Test of Three Models." Journal of Conflict Resolution, Vol. 27, 1983, 279 300
Roth, A.E. and Murnighan, J.K. "Information and Aspirations in Two Person Bargaining", Aspiration Levels in Bargaining and Economic Decision Making, R. Tietz, ed., Springer, 1983.
Murnighan, J.K., Roth, A.E., and Schoumaker, F. "Risk Aversion and Bargaining: Some Preliminary Experimental Results," European Economic Review, 31, 1987, pp265-271.
Murnighan, J.K., Roth, A.E., and Schoumaker, F. "Risk Aversion in Bargaining: An Experimental Study," Journal of Risk and Uncertainty, Vol. 1, 1988, 101-124.
Roth, A.E., Murnighan, J.K., and Schoumaker, F. "The Deadline Effect in Bargaining: Some Experimental Evidence," American Economic Review, Vol. 78, 1988, 806-823.
Murnighan, J.Keith, and Alvin E. Roth, “Some of the Ancient History of Experimental Economics and Social Psychology: Reminiscences and Analysis of a Fruitful Collaboration,” Social Psychology and Economics, D. De Cremer, M. Zeelenberg, and J.K. Murnighan, editors, Lawrence Erlbaum Associates, Inc.: Mahwah, NJ. 2006, 321-333.
"The car-hailing service Uber can detect when a user’s smartphone is low on battery, and therefore willing to pay more to book a ride.
Uber, which has faced the ire of London’s tax drivers since launching in the capital in 2012, can tell when its app is preparing to go into power-saving mode, although the firm says it does not use this information to pump up the price.
Keith Chen, head of economic research at Uber, told NPR that users are willing to accept a “surge price” up to 9.9 times the normal rate, particularly if their phone is about to die.
“One of the strongest predictors of whether or not you’re going to be sensitive to surge… is how much battery you have left on your cellphone,” he said.
“We absolutely don’t use that to push you a higher surge price, but it’s an interesting psychological fact of human behaviour.”
**********
"Since the first kidney exchange in WA in 2007 involving two pairs of matched donor-recipients, more than 150 kidney transplants have taken place in the exchange program.
Every three months, a computer program searches the national database to look for combinations that will allow an exchange to occur.
Sir Charles Gairdner Hospital surgeon Bulang He, from the WA Liver and Kidney Surgical Transplant Service, said the biggest exchange had involved six pairs of donor recipients.
There was strict criteria for the donors and recipients to give the best possible success rates.
“It is more complicated the more pairs that are involved, and how many you use depends on the match results and what will give the best outcomes,” Dr He said.
Dr He said transplants were cost-effective because they could prevent years of dialysis.
For details on becoming a donor, visit donatelife.gov.au"
Our next Matching in Practice workshop will take place in Paris at the Paris School of Economics on June 2 and 3. The first day will be a regular MiP workshop with Nicole Immorlica from Microsoft Research as keynote speaker and a policy round table on the allocation of social housing. The second day will be dedicated to Advances in Market Design. More information about registration to follow.
DAY ONE: XIth WORKSHOP “MATCHING IN PRACTICE”
09:00 – 10:00: Nicole Immorlica (Microsoft Research New England): TBA
Coffee Break
10:30 – 12:30: Contributed Sessions
Heinrich Nax (ETH Zurich) : Evolutionary dynamics and equitable core selection in assignment games
Britta Boyer (U Paderborn) : Matching Strategies of Heterogeneous Agents in a University Clearinghouse
Andre Veski (TU Tallinn) : Efficiency and fair access in kindergarten allocation policy design
Lunch
13:40 – 15 :00: Contributed Sessions
Rustam Hakimov (WZB Berlin) : Iterative Deferred Acceptance Mechanisms: Theory and
Experimental Evidence
Vincent Iehlé (U Paris Dauphine) : A centralized matching market with early matches
Coffee Break
15:30 – 17:30: Focus session on the assignment of social housing
Jacob Leshno (Columbia): TBA
Neil Thakral (Harvard): TBA
David Cantala (Colegio de Mexico): TBA
17:30 – 19:00: Round Table on the assignment of social housing in France and Europe
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