منابع مشابه
Fast Optimal Clearing of Capped-Chain Barter Exchanges
Kidney exchange is a type of barter market where patients exchange willing but incompatible donors. These exchanges are conducted via cycles—where each incompatible patient-donor pair in the cycle both gives and receives a kidney—and chains, which are started by an altruist donor who does not need a kidney in return. Finding the best combination of cycles and chains is hard. The leading algorit...
متن کاملComputerized Platform for Optimal Organ Allocations in Kidney Exchanges
Kidney transplantation has emerged as the treatment for the most serious forms of kidney disease, but the supply of kidneys from deceased donors cannot meet the fastgrowing demand. Recently, Kidney Paired Donation (KPD) program, a modality which enables willing but incompatible live donor-candidate pairs to swap donors, offers a promising solution for closing the gap between kidney supply and d...
متن کاملMarket Based, Segregated Exchanges in Securities with Default Risk
This paper studies a competitive general equilibrium model with default and endogenous collateral constraints. Even though all collateralized contracts are allowed, the possibility and desirability of trade in spot markets (or the equivalent trade in ex ante asset backed securities) creates externalities, as spot prices (or security prices) and the bindingness of collateral constraints interact...
متن کاملAssignment Exchanges
Assignment Exchanges Paul Milgrom September 6, 2008 Abstract. We analyze assignment exchanges –auction and exchange mechanisms which are tight simplifications of direct Walrasian exchange mechanisms. These simplifications are distinguished by their use of “assignment messages,” which parameterize certain substitutable preferences. The “basic” assignment exchanges respect integer constraints, ge...
متن کاملMarriage exchanges, seed exchanges, and the dynamics of manioc diversity.
The conservation of crop genetic resources requires understanding the different variables-cultural, social, and economic-that impinge on crop diversity. In small-scale farming systems, seed exchanges represent a key mechanism in the dynamics of crop genetic diversity, and analyzing the rules that structure social networks of seed exchange between farmer communities can help decipher patterns of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ASTIN Bulletin
سال: 1979
ISSN: 0515-0361,1783-1350
DOI: 10.1017/s0515036100005882