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Blockchains such as bitcoin rely on reaching global consensus for the distributed ledger, and suffer from a well know scalability problem. We propose an algorithm which can avoid double spending in th...
Zerocoin (Miers et. al, IEEE S&P’13), designed as an extension to Bitcoin and similar cryptocurrencies, was the first anonymous cryptocurrency proposal which supports large anonymity sets. We identify...
Zero-confirmation transactions, i.e., transactions that have been broadcast but are still pending to be included in the blockchain, have gained attention in order to enable fast payments in Bitcoin, s...
U.S. research and development (R&D) performance rose to $477.7 billion in 2014 -- an increase of $21.1 billion over the previous year -- and is estimated to hit $499.3 billion in 2015, according to a ...
We study the spatial allocation of expenditures in the American Recovery and Reinvestment Act (ARRA), one of the largest discretionary funding bills in the history of the United States. Contrary to...
Renewed interest in fiscal policy has increased the use of quantitative models to evaluate policy. Because of modelling uncertainty, it is essential that policy evaluations be robust to alternative ...
Over the past half century, Americans spent a rising share of total economic resources on health and enjoyed substantially longer lives as a result. Debate on health policy often focuses on limiting t...
Generic drugs comprise an increasing share of total prescriptions dispensed in the U.S., rising from nearly 50% in 1999 to 75% in 2009. The generic drug market has typically been viewed at the wholesa...
This research provides the first support for a possible psychological universal: human beings around the world derive emotional benefits from using their financial resources to help others (prosocial ...
In this paper, we analyze the spending decisions of over 1.5 million Americans who vary in their degree of revealed credit constraints. Specifically, we analyze how these Americans spend their income ...
The majority of the nation's federally funded R&D centers (FFRDCs) reported spending less on research and development in fiscal year 2013 than they had the previous year, according to a new InfoB...
Frugal behavior is infrequently studied in both psychology and marketing. As a consumption pattern it deserves greater attention because frugal consumer behavior is a desirable goal for both individua...
The purpose of this paper is to determine whether larger or smaller municipalities are more efficient in their levels of overhead costs. The operative measure is per capita annual costs for these serv...

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