Thursday, August 15, 2013

Clearing: the scramble for British university admissions begins today

Admissions offers in Britain are (often) contingent on exam results, and today the A-level exam results are publiished, and the process known as Clearing begins. The Telegraph has the story (and apps to guide students through the process).
Clearing 2013: How to play the system
If you don’t get the A-level grades you want on Thursday, don’t panic. Let Andrew Marszal and the Telegraph guide you through clearing and beyond

While this particular “due date” is certain – A-level results will be published tomorrow come rain or shine – the outcome is anything but.
Based on numbers from previous years, we know that by tomorrow morning around 350,000 students will be celebrating, having secured the grades they needed to meet their university offers.
We can even speculate that one or two of them will leap joyfully into the air, shamelessly flourishing their straight A* grades for local press photographers.
But for a significant proportion of would-be undergraduates, the end of the long wait only marks the beginning of university clearing.
Once the dust had settled last year, some 167,000 teenagers found themselves eligible for clearing – the process which matches students who don’t have the university offers they want with courses that still have vacancies.
With overall application numbers slightly up for this year’s courses, it’s likely that figure could be exceeded this week.

And even those who have gained or exceeded the required grades will want to keep an eye on clearing – there is still the option of switching to a more competitive course through the parallel “adjustment” process, which carries the advantage of not having to give up your existing offer while you shop around for a better course.

So that’s why, with hundreds of thousands of teenagers making potentially life-altering decisions in the space of just a few days or even hours after receiving their results, the Telegraph has put together a range of exclusive tools to help you negotiate your application. As the exclusive media partner of Ucas, all course vacancy listings will be available only with this newspaper in England and Wales, starting from the morning of A-level results day. There will be further listings published free with your newspaper on August 16, 17 and 29 and September 5.

But bear in mind that clearing places will come and go across the clearing period until September 30, as people turn down offers and universities fill places.
**************

Here's a helpful graphic of whhere the vacant places are: http://www.telegraph.co.uk/education/universityeducation/clearing/10242726/Clearing-2013-graphic-which-universities-have-places.html

Wednesday, August 14, 2013

College admissions as the cohort of high school grads starts to shrink

The NY Times had a story about admissions practices in a time of declining enrollments: College Enrollment Falls as Economy Recovers, that has been followed up by a story in Inside Higher Ed, The Hard (and Late) Sell, whose URL says more that its headline does: http://www.insidehighered.com/news/2013/07/29/some-colleges-recruit-students-who-have-already-accepted-offers-elsewhere

"Colleges should "not knowingly recruit students who are enrolled, registered, have initiated deferred admission, or have declared their intent, or submitted contractual deposits to other institutions," says the Statement of Principles of Good Practice of the National Association for College Admission Counseling. (The statement does not have legal power, but is a respected ethics code for the admissions profession.)

"So more than a few admissions officers and high school counselors did a double-take when they read in The New York Times Friday that Loyola University in New Orleans this summer "made a flurry of calls to students who had been accepted but had decided to go elsewhere, and had even paid deposits to other colleges." Loyola is among a number of colleges that this year were seriously below their targets for a freshman class for the fall, and the Times cited that strategy (which would seem to directly violate the NACAC statement) as one being tried. And so counselors did what they generally do when they learn of violations of their code of conduct: they asked NACAC to investigate.

"Loyola says that its officials were misquoted by the Times (more on that later) and that it strictly abides by the NACAC guidelines. But it also turns out that some other colleges have been going after students who have made deposits and commitments elsewhere, in violation of the NACAC guidelines."

Tuesday, August 13, 2013

More on suicide bombing as a repugnant transaction

I recently blogged about suicide bombing as a repugnant transaction, in the sense that while most of the world condemns it, there are communities or parts of communities that encourage and celebrate it. Now Tyler Cowen blogs about the movie "The Attack" (by a Lebanese director, but banned throughout the Arab world as portraying Israeli bombing victims too sympathetically) and points to this review in the Washington Post: ‘The Attack’: Lebanese director’s film about suicide bombing gets Israeli premiere

"Banned by Lebanon, ignored by Arab countries and praised by U.S. critics, the suicide-bomber drama “The Attack” finally got a splashy sold-out Middle East premiere — in Jerusalem.

"Many people settling into their seats at the recent Jerusalem Film Festival screening in the plush Cinematheque, which overlooks the Old City, had lived through the years when Palestinian suicide bombings roiled Israeli society, killing hundreds of people in crowded cafes, buses and markets.

"Now, as the theater grew dark, Israelis were asked to examine their country’s security equation through the eyes of Amin Jafaari, an award-winning Israeli surgeon of Palestinian background who is shocked to discover that his beautiful wife is a suicide bomber, responsible for a blast at a Tel Aviv cafe that claims 17 victims, including 11 children.

"At first, Jafaari is disbelieving and outraged. Eventually he heads to the Palestinian West Bank city of Nablus to find out how she could have done this.

"There, he finds his wife celebrated as a martyr in posters and handbills, and by hostile extremists who order him out of a mosque. Even his relatives are proud of her. His wife’s young co-conspirator struggles to explain how Palestinian civilian casualties in an Israeli army attack could motivate him to orchestrate such a heinous act.

Monday, August 12, 2013

More progress with long kidney exchange chains

Here's an article with some interesting background information about a recent long chain,and about the progress being made in kidney exchange, by  Leila Haghighat in the Philadelphia Inquirer: Kidney chains link patients and donors.

I blogged earlier about this chain, in June, here.

Sunday, August 11, 2013

The Facebook effect on deceased organ donor registration

The American Journal of Transplantation has some data on the effect of Facebook's promotion of deceased donor registration. Here's a (gated) link to the article:
A. M. Cameron, A. B. Massie, C. E. Alexander, B. Stewart, R. A. Montgomery, N. R. Benavides, G. D. Fleming, D. L. Segev


Abstract: Despite countless media campaigns, organ donation rates in the United States have remained static while need has risen dramatically. New efforts to increase organ donation through public education are necessary to address the waiting list of over 100,000 patients. On May 1, 2012, the online social network, Facebook, altered its platform to allow members to specify “Organ Donor” as part of their profile. Upon such choice, members were offered a link to their state registry to complete an official designation, and their “friends” in the network were made aware of the new status as a donor. Educational links regarding donation were offered to those considering the new organ donor status. On the first day of the Facebook organ donor initiative, there were 13,054 new online registrations, representing a 21.1-fold increase over the baseline average of 616 registrations. This first-day effect ranged from 6.9× (Michigan) to 108.9× (Georgia). Registration rates remained elevated in the following 12 days. During the same time period, no increase was seen in registrations from the DMV. Novel applications of social media may prove effective in increasing organ donation rates and likewise might be utilized in other refractory public health problems in which communication and education are essential.



Saturday, August 10, 2013

Boston College and TUBITAK celebrate Utku Unver

From the B.C. Chronicle yesterday, announcing that Utku Ünver has won the Special Award in Science of the Turkish Scientific and Technological Research Council (TUBITAK) (2013) (Tubitak's highest award for a Turkish scholar working abroad)

"Ünver, who joined Boston College in 2008, has been granted a Special Award in Science by the Turkish Scientific and Technological Research Council, which recognizes Turkish scientists who have significantly contributed to science by their work abroad. Ünver was the sole recipient of the award in the Social Sciences category, cited for his work on economic design, matching models and kidney exchange schemes, many of which have involved collaboration with colleague Professor Tayfun Sönmez and recent Nobel Prize recipient Alvin Roth."
***********

Here's an earlier announcement: TÜBİTAK ödülleri açıklandı! (TUBITAK Awards Winners Announced)

Friday, August 9, 2013

An unusual law clerk hire

Not every clerk is hired without any experience other than law school. This year, one clerk, Shon Hopwood, will be showing up at the D.C. Circuit Court of Appeals after (not right after) a lengthy prison term for bank robbery (after which he went to law school at the University of Washington ).

Here's a blog post on it (note the date, for those of you who have been following the unravelling of the law clerk market this year. I presume that Mr Hopwood will return this Fall to his third year of law school so that he's been hired before the recently-abandoned "official" Fall dates). The URL is too nice to hide the link behind text: http://legaltimes.typepad.com/blt/2013/08/shon-hopwoods-unique-career-in-the-law-has-taken-a-dramatic-new-turn-the-onetime-jailhouse-lawyer-who-served-time-in-federal.html

AUGUST 07, 2013

****************

Here's an August 26 story from the NY Times: Taking a Second Chance, and Running With It

Thursday, August 8, 2013

Equalizing transplant waiting times across regions: OrganJet helps its first patient

Sridhar Tayur at CMU, the founder of OrganJet emails "Thanks for your help and support...our first patient gets her kidney away from where she lives" and points me to this press release--OrganJet customer receives kidney transplant years faster due to smart multiple listing.

"Originally listed in the DC area about 18 months ago, where the median wait time is nearly 5 years -- wait times in nearby Maryland are not that much better -- the 41-year old wife and mother contacted OrganJet for advice and arranged her on-demand jet transportation options (in addition to available commercial choices) just a few months ago. 
"There is significant disparity in wait times across different geographic areas, ranging from over 5 years in areas like NJ, MA, Washington D.C. and CA, while it is half that (or less) in regions like Pittsburgh, PA, Portland, OR and Madison, Wisconsin," said Sridhar Tayur, Founder and CEO of OrganJet and a professor at Carnegie Mellon University's Tepper School of Business. Every year, over 5000 patients die waiting for a kidney in some parts of the US while organs in other regions may go unused.  While the actual numbers of wasted organs is a subject of debate, it is generally recognized to be in the range of 500-2500 annually. "Our goal is to provide affordable options for patients on transplant lists in high wait time areas so that they can increase their access to organs. This improved matching also helps reduce organ waste," said Tayur."
***********

See my earlier post on OrganJet.


Wednesday, August 7, 2013

Undocumented immigrants in need of transplants

Some people are in really difficult circumstances:
Hunger strikers seek transplants for undocumented immigrants
"Demanding access to organ transplant procedures for undocumented immigrants, a group of hunger strikers set up camp outside Northwestern Memorial Hospital on Sunday."

Here's the story as of yesterday:
Hunger Strike Continues For Undocumented Immigrants Needing Organ Transplants

 My understanding is that Northwestern and other transplant centers don't in fact take immigration status into account, but that undocumented immigrants may evaluate poorly on the ability to sustain the daily immunosuppressive drug treatments that follow transplantation. (See this earlier post on the consequences of medicare's 3 year payment limit on immunosuppresive drugs.)

Tuesday, August 6, 2013

Suicide bombing as a repugnant transaction

Often when I write about repugnant transactions I'm exploring why some people don't like something that other people want to do. But it can work the other way too: we should work to understand what some people like about activities that most people disapprove of.  This story yesterday in the Beirut Daily Star, about suicide bombing, caught my eye:

Lebanese suicide bomber’s family celebrates death of kin in Syria

"TRIPOLI, Lebanon: The family of a Lebanese suicide bomber who died in Syria received congratulations and distributed sweets for the killing of two of their members fighting against the forces of Syrian President Bashar Assad.

“The Syrian regime is an enemy,” the grandfather of Motasem and his brother Hasan Khaldoun al-Hasan told The Daily Star. “There are fatwas to kill members or supporters of this regime, which is an infidel regime.”

"The grand father, Mohammad Hajj Dib – better known as Abu Abdel-Nasser – dubbed his grandsons “martyrs.”

"Abu Moaz, the nom de guerre of Motasem al-Hasan, blew himself up in the attack on the Syrian army checkpoint near Qalaat al-Hosn or Crac des Chevaliers in Homs last week. Abu Othman, the nom de guerre of Motasem’s brother Hasan Khaldoun, was killed in a later assault on the post by rebels.
...
At a condolences ceremony at the family residence in Tripoli’s neighborhood of Mankoubeen over the weekend, the grandfather, was smiling as he greeted visitors and distributed sweets after iftar. Visitors congratulated the family – a traditional way of offering condolences to relatives of martyrs.

The news of the brothers’ deaths was announced over the weekend by Sheikh Mohammad Ibrahim a member of Lebanon’s Salafist Hizb Ut-Tahrir.

We would like to bring the Muslims in Lebanon and Tripoli the good news of the martyrdom of two college boys Abu Moaz and ... Abu Othman who [were part of an attack] on the Abu Zeid checkpoint near Crac des Chevaliers in Homs during a suicide mission,” Ibrahim said in a statement."

Monday, August 5, 2013

It's National Minority Organ Donor Awareness Week

Here's the relevant U.S. Department of Health and Human Services website: National Minority Donor Awareness Week, August 1-7

"Observed annually, National Minority Donor Awareness Week was created to increase awareness of the need for more organ, eye, and tissue donors, especially among minorities. Now in its 17th year, this special observance honors minorities who have been donors, and encourages others to register as donors and take better care of their health in order to reduce the number needing a transplant."

A related story: Minority Organ Donors in Dire Need in Illinois
""The essence of organ and tissue donations in the African-American and Hispanic communities is critical," said Jackie Lynch, Director of Community Affairs for Gift of Hope Organ and Tissue Donor Network.
Gift of Hope is an agency that helps people in need of organ and tissue transplants. More than half of the state's waiting list are minorities, but they are the fewest registered donors, according to Lynch. He says 18 percent of the state’s population is African-American, but the demographic makes up 54 percent of people in need of organ donor transplants.
"There are so few African-American donors, yet so many waiting. They wait longer and in many cases they die waiting."

Here's a recent paper on consent rates: Crit Care Med. 2013 Feb;41(2):496-505.
Deceased organ donation consent rates among racial and ethnic minorities and older potential donors.
Goldberg DS, Halpern SD, Reese PP.
DESIGN, SETTING, AND SUBJECTS:
We used data provided by the Organ Procurement and Transplantation Network to analyze the 35,823 organ procurement organization-reported eligible deaths (potential brain-dead donors ≤ 70 yr of age) from January 1, 2008, to October 31, 2011.
"MEASUREMENTS AND MAIN RESULTS:
Excluding cases where donation authorization was based on prior patient documentation (e.g., donor registry), consent was obtained on 21,601 (68.9%), not obtained on 8,727 (27.8%), and not requested on 1,080 (3.4%) eligible deaths. There were substantial differences in consent rates among racial/ethnic groups (77.0% in whites, 67.5% in Hispanics, 54.9% in blacks, and 48.1% in Asians) and organ procurement organizations (median [interquartile range]: 72.4% [67.5-87.3]). In generalized estimating equation models, with whites and patients ages 18-39 yr as the respective reference groups, consent for donation was less likely to be obtained among Hispanics (odds ratio 0.54; 95% confidence interval 0.44-0.65), blacks (odds ratio 0.35; 95% confidence interval 0.31-0.39), Asians (odds ratio 0.31; 95% confidence interval 0.25-0.37), and eligible donors ages 55-64 (odds ratio 0.72; 95% confidence interval 0.67-0.77), and ≥ 65 yr (odds ratio 0.58; 95% confidence interval 0.52-0.64).
CONCLUSIONS:
In presenting the first published analyses of consent rates among all eligible deaths, this study confirms smaller and regional studies that showed significant differences in consent rates between whites and racial/ethnic minorities (blacks, Hispanics, and Asians). The study also identifies considerable variation in consent rates between age groups and between organ procurement organizations. Critical care physicians are usually the front-line providers for potential brain-dead donors and their next-of-kin, and these data highlight the need for further research to identify the causes of variation in consent rates and mechanisms to increase rates where appropriate."

Sunday, August 4, 2013

U.S. medical school enrollment is increasing faster than residency positions

...and if you draw the lines, you can see when we might crossover from importing new doctors to exporting them.  Here's an article in the NEJM on recent trends:

The Residency Mismatch, by John K. Iglehart

"After two decades (1980 to 2000) when the number of U.S. medical school graduates remained steady (about 16,000 annually), a burst of activity has led to the expansion of existing medical schools, the development of new ones, and rapid growth of colleges of osteopathy. In 2002, there were 125 U.S. medical schools; today, there are 141, and about one third of the recent growth in enrollment derives from new schools.
...
"... federal funding is a key factor limiting the number of GME positions, which, in contrast to medical school seats, has increased remarkably slowly — at an annual rate of 0.9% from 2001 through 2010.2 The major stumbling block over the past 15 years has been a payment cap that Congress imposed on Medicare's funding of advanced training in the Balanced Budget Act of 1997. Medicare is the primary supporter of GME programs..."

HT: Ran Shorrer

Saturday, August 3, 2013

19th World Transplant Games begin in Durban

People with transplants can resume active lives...here's the story.

"The opening of the World Transplant Games was marked with a ceremony featuring a mass choir performance of the official event song, “Our Hearts Are Beating”.
...
"The World Transplant Games are held every other year with cities around the world competing to hold the sporting event. The main qualification for athletes to compete is that they need have an organ transplant. "

HT: Ran Shorrer

Friday, August 2, 2013

Who volunteers for the volunteer army?

When I was young, the Viet Nam was was underway, and the way the American army got many soldiers was by conscription. But conscription ended in 1973, the Army has been an all volunteer force since then.

One reason it's interesting to look at who American soldiers are is because of the light it might shed on other debates, such as the one about whether living kidney donors should be compensated, and what would be the likely change in the pattern of donations should the law be changed to allow that.  One concern that arises is that, if kidneys could be bought and sold, the sellers would be the poorest of the poor, in desperation.

That isn't who end up in the American Army, it turns out. Here's a 2008 report from the Heritage Foundation that casts some light on the subject. It appears that being an American soldier is a good enough job that you have to have substantial human capital to be able to qualify.

Who Serves in the U.S. Military? The Demographics of Enlisted Troops and Officers
By Shanea Watkins, Ph.D. and James Sherk

"Based on an understanding of the limitations of any objective definition of quality, this report compares military volunteers to the civilian population on four demographic characteristics: household income, education level, racial and ethnic background, and regional origin. This report finds that:
  1. U.S. military service disproportionately attracts enlisted personnel and officers who do not come from disadvantaged backgrounds. Previous Heritage Foundation research demonstrated that the quality of enlisted troops has increased since the start of the Iraq war. This report demonstrates that the same is true of the officer corps.
  2. Members of the all-volunteer military are significantly more likely to come from high-income neighborhoods than from low-income neighborhoods. Only 11 percent of enlisted recruits in 2007 came from the poorest one-fifth (quintile) of neighborhoods, while 25 percent came from the wealthiest quintile. These trends are even more pronounced in the Army Reserve Officer Training Corps (ROTC) program, in which 40 percent of enrollees come from the wealthiest neighborhoods-a number that has increased substantially over the past four years.
  3. American soldiers are more educated than their peers. A little more than 1 percent of enlisted personnel lack a high school degree, compared to 21 percent of men 18-24 years old, and 95 percent of officer accessions have at least a bachelor's degree.
  4. Contrary to conventional wisdom, minorities are not overrepresented in military service. Enlisted troops are somewhat more likely to be white or black than their non-military peers. Whites are proportionately represented in the officer corps, and blacks are overrepresented, but their rate of overrepresentation has declined each year from 2004 to 2007. New recruits are also disproportionately likely to come from the South, which is in line with the history of Southern military tradition.
The facts do not support the belief that many American soldiers volunteer because society offers them few other opportunities."

HT: Volokh conspirators

Thursday, August 1, 2013

Purple market design at Northwestern: Jeff Ely and Sandeep Baliga auction football tickets

Blogging would be easy if I got more emails like this one from eminent game theorists. Its subject line was "our foray into market design":

dear al,

sandeep baliga and i persuaded northwestern athletics to let us auction off their football tickets.  the auction starts tomorrow. you can see it here:


we put together a little video to explain how the auction works. (in simple terms its a uniform-price dutch auction).


we would love it if you could mention it on your blog.


jeff

(Any complaints from disgruntled Wildcats should be directed to  Jeffrey Ely and/or Sandeep Baliga. Or maybe you could comment on their blog Cheap Talk, one of the economics blogs that I follow.)


Wednesday, July 31, 2013

Non-directed kidney donors are increasing (and are increasingly important)

Here's a story on the increasing number of non-directed kidney donors: Amid organ shortage, altruistic kidney donations increase but bring forth ethical debate

This line caught my eye:
 "It's difficult to pinpoint a single reason for the uptick, but more than 50 percent of altruistic donations ever performed -- 1,374 as of April -- came after 2009, when numbers of traditional living donors started falling."

I am only speculating, but I'm guessing that the relatively small drop in live kidney donation has to do with the recession: when times are hard, it's harder to arrange time for a kidney surgery, since we don't allow donors to be compensated, and aren't even as good as we should be at covering their costs.
As for the growth of non-directed donations since 2009, that's when the first non-simultaneous non-directed donor chain was reported in the New England Journal of Medicine, and that and other long chains since then may have garnered enough publicity (such as this and this) to spread the word to potential donors.

In any event, chains started by non-directed donors are an increasingly important part of kidney exchange today, for reasons explored here.

Tuesday, July 30, 2013

Some memories of Cy Derman

Annals of Operations Research has published online a paper on the life and work of Cyrus Derman, by Katehakis, Olkin and Ross.

I knew Derman as an undergrad at Columbia. So, in the manner of undergrads, I didn't know him at all well. I nevertheless remember him fondly.
Here's the text of my letter:

I came to Columbia in 1968 as an undergraduate in the engineering school. I didn’t know what I wanted to major in, and declared an interest in nuclear engineering, so that I could take as many physics courses as I wanted. But the summer after my freshman year I took a summer job in Washington D.C. at an Army lab for which I had qualified by taking a civil service exam. They had an OR group, and I returned to school as an OR major.
In the manner of undergraduates, I didn’t have a clear idea of what my teachers did. But I recall admiring Cy Derman’s attitude: he seemed not to take himself too seriously. I recall he wore turtleneck shirts and talked about tennis, and summers at Stanford.
When it came time to think about graduation, Cy urged me to think about grad school in OR, and volunteered to write a letter for me. Some time later, in a reflective moment, he said something to me like “I wrote you a very good letter. I’m not exactly sure why; you didn’t do all that well in your courses. But I have a feeling that you might be good at research.” Cornell and Stanford were the programs he recommended, and when I was accepted at both, his preference was clear, and I followed his advice, which set me on a path I’m still following.

Monday, July 29, 2013

2013 National Donor Designation Report Card Released

Donate Life America releases their annual report on organ donor registration. Here's their summary news release, and a link to the full report:

Donate Life America unveiled its sixth annual National Donor Designation Report Card during the organization’s annual meeting, held in Indianapolis, Indiana, this year. The document reports 109 million people had enrolled in state donor registries by the end of 2012. The public can add to that number and help save the lives of the more than 120,000 men, women and children awaiting organ transplants by designating a donation decision at www.donatelife.net.
This year’s Report Card puts specific emphasis on the efforts of Donate Life America and its constituents to reach the 18-24 year old demographic, who say they have not registered because they “have not heard about it” or “simply have not gotten around to it.”  Though it is extremely important to educate all demographics, the 18-24 is least likely to register, followed closely by people 65 and older, who often erroneously believe they are too old to be organ, eye and tissue donors.
Nationwide, 45 percent of individuals age 18 and older have registered to be organ, eye and tissue donors. Montana and Alaska top the state list with 82 percent and 80 percent respectively, followed by Washington with 78 percent.
The document also reports that of all recovered donors in the United Sates in 2012, 40 percent of organ, 48 percent of eye and 45 percent of tissue donors, were authorized through the state donor registry.  These numbers have continued to rise since Donate Life America began collecting this data in 2007.
“Eighteen people die each day due to a lack of available organs for transplant and the number of people on the national organ transplant waiting list continues to rise, “ said David Fleming, President and CEO of Donate Life America.  “The only way to give greater hope to all of the individuals waiting is for all who have not year registered to take the time to do it today.”
Here's a state by state summary from pages 6 and 7 of the report.

Sunday, July 28, 2013

First Kidney Exchange in Portugal:

Ana Viana writes from Portugal about the first kidney exchange there, which she and other Operations Researchers helped bring about with some integer programming formulations that they've also written about:

"I am happy to inform you that the first successful kidney exchange in Portugal took place in April.
This was performed under the "Program Nacional para Doação Renal Cruzada" (National Program for Kidney Paired Exchanges), supervised by the Portuguese Institute for Blood and Transplantation ( http://ipsangue.org/).

Below you can find a partial translation of news on the subject that I took from Internet.

To help the decision process the program is using a MIP model developed by myself and my colleagues. It's just the beginning but we are very excited with it!

Best regards,

Ana


---------------------------------------------------------------------
"The two patients who received in April the kidneys from two living donors in the first kidney exchange transplant in Portugal crossover are well, said to LUSA the doctor responsible for the double intervention.
Five additional pairs are currently under study and it is possible that very soon additional transplants can be done, said surgeon Alfredo Mota from Centro Hospitalar da Universidade de Coimbra(CHUC).
(...)
The people involved in the first transplant of its kind in Portugal are a brother (donor) and a sister (patient) and husband (donor) and wife (patient).
(…)
The intervention took more than six hours and involved 12 surgeons, 4 anesthesiologists, 12 nurses and 4 technicians, using four operating rooms at the same time.
This type of intervention is "a breakthrough for the country, placing it at the forefront internationally and with greater opportunity to increase kidney transplants," said the same official.



A video can also be found in http://sicnoticias.sapo.pt/pais/2013/04/19/primeiro-duplo-transplante-cruzado-com-dadores-vivos-realizado-em-coimbra "
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The video is just over two minutes, and it is in Portuguese, with some good shots of both a nephrectomy and a transplant.

Here is a paper by Ana and her colleagues, which is already available online and is listed as (forthcoming) in November 2013 in the European Journal of Operational Research, Volume 231, Issue 1, 16 November 2013, Pages 57–68:

New insights on integer-programming models for the kidney exchange problem
by Miguel Constantino,  Xenia Klimentova, Ana Viana, Abdur Rais,

Abstract
In recent years several countries have set up policies that allow exchange of kidneys between two or more incompatible patient–donor pairs. These policies lead to what is commonly known as kidney exchange programs.

The underlying optimization problems can be formulated as integer programming models. Previously proposed models for kidney exchange programs have exponential numbers of constraints or variables, which makes them fairly difficult to solve when the problem size is large. In this work we propose two compact formulations for the problem, explain how these formulations can be adapted to address some problem variants, and provide results on the dominance of some models over others. Finally we present a systematic comparison between our models and two previously proposed ones via thorough computational analysis. Results show that compact formulations have advantages over non-compact ones when the problem size is large.


Saturday, July 27, 2013

Dallas celebrates Gary Bolton

...where they are justly proud of him:

Early Interest in Economics Inspired Prof’s Career and Research

Jul. 18, 2013
Dr. Gary Bolton
Dr. Gary Bolton's research focuses on how people negotiate, make decisions and build trust.
When Dr. Gary Bolton started college, inflation was at its highest point in decades. U.S. manufacturing was on the decline. And an oil shortage forced rising gas prices and long lines at the pump.
“As a kid growing up in the ‘70s, I would read the newspaper and wonder why the economy was so messed up,” he said.
Bolton’s interest in the economic conditions as a youth inspired an academic career that has been distinguished by prestigious academic appointments, multiple National Science Foundation grants, dozens of articles in top economic journals and speaking engagements around the world.
Last fall, Bolton, a professor of managerial economics, was named O.P. Jindal Chair and co-director of theCenter and Laboratory for Behavioral Operations and Economics in the Naveen Jindal School of Management. He runs the center with Dr. Elena Katok, his wife, an Ashbel Smith Professor of Operations Management.
The pair came to UT Dallas last year to open the new center and expand their research, he said. The center features laboratory methods, using simulated business situations on computer games, to study how student volunteers make decisions, bargain and negotiate.
“We found it to be an exciting opportunity,” Bolton said. “I think what’s exciting about UT Dallas is that it’s growing fast and has a goal of being a Tier One institution, which I think will happen soon.”
Bolton’s research is focused on decision-making, negotiations and trust-building. He said his graduate school mentor, Nobel Economics Prize winner Dr. Alvin Roth, now Craig and Susan McCaw Professor of Economics at Stanford University, has been a major influence.

“He taught me game theory, which concerns itself with how people make decisions — especially when they interact with one another,” he said. “He also introduced me to experimental economics, which provides a way of testing the ideas we develop in game theory.”

Bolton worked on a consulting team for eBay in 2006 that redesigned a problematic feedback system used to gather information on the reputation of sellers and buyers. Bolton’s articles have been published in such journals as the American Economic ReviewManagement ScienceJournal of Mathematical Psychology and Games and Economic Behavior. He was featured in a History Channel documentary, “Seven Deadly Sins: Greed.” He is on the editorial board of Experimental Economics.
Bolton has received research funding from the National Science Foundation and IBM. Bolton and Dr. Axel Ockenfels, professor of economics at the University of Cologne, developed the Theory of Equity, Reciprocity and Competition, which is explained in their highly cited paper in the American Economic Review. The premise of the theory is that people are not only motivated by their financial payoff but also how their monetary gain compares to the relative payoff of others.
Dr. Hasan Pirkul, Jindal school dean and Caruth Chair of Management, said that Bolton is an influential and renowned scholar whose innovative research contributions are expanding the field of economics.
“We are honored to have Dr. Bolton on our faculty,” Pirkul said. “He is a highly accomplished scholar whose expertise is a tremendous benefit to our students. We are excited about the research that will result from Dr. Bolton and Dr. Katok’s work at the new behavioral research center.”


Dr. Gary Bolton

TITLE: O.P. Jindal Chair of Management Economics, co-director, Center and Laboratory for Behavioral Operations and Economics, Bolton also sits on the board of advisors of the UT Dallas Negotiations Center
RESEARCH INTERESTS: Decision-making: negotiation, trust, reputation-building, social utility, strategic learning
PREVIOUSLY: Schwartz Professor of Business, Pennsylvania State University

Gary is one half of a power couple of scientists: he is married to Elena Katok, also celebrated at Dallas:

Dr. Elena Katok

Professor of Operations Management

Ashbel Smith Professor

Katok is a pioneer in the growing field of behavioral operations management, which examines the way human behavior affects operations management practices, such as production planning and inventory management.
"My interest in behavioral operations management evolved from my interest in experimental economics," she said. "Early on in my career, I was fortunate to have had an opportunity to work with Gary Bolton and Alvin Roth. The topics of market design and strategic procurement naturally lend themselves to being investigated using game theoretic models and laboratory methods, so this was a natural fit."
Her husband, Gary Bolton, holds the O.P. Jindal Chair in Managerial Economics at UT Dallas. Alvin Roth is an economics professor at Stanford University.
Katok helped establish the Behavioral Operations Management section of the Institute for Operations Research and the Management Sciences, which is also known as INFORMS. She is currently president of this section after previously serving as the vice president.
She said she is proud of co-organizing the first Behavioral Research in Operations Management conference, which was established in 2006. The conferences are now held annually, which she said is a testament to the growth of behavioral operations management.
In addition to behavioral operations management, her research expertise includes market design and strategic procurement. Her research has been published in top business and economics journals, including Management Science, Manufacturing and Service Operations Management, andProduction and Operations Management. She is currently a senior editor and the incoming department editor for Behavioral Operations for Production and Operations Management. The National Science Foundation and the Department of Defense are among the organizations that have supported her research.
Before joining UT Dallas this year, she was a professor of supply chain management in the Smeal College of Business at Pennsylvania State University.
She earned her bachelor of science degree in business administration with an emphasis in finance and economics from the University of California, Berkeley. She earned her MBA from Pennsylvania State University, where she also earned her PhD in management science.