نتایج جستجو برای: o17

تعداد نتایج: 271  

2014
Clement Joubert

Pension Design with a Large Informal Labor Market: Evidence from Chile This paper investigates empirically the fiscal and welfare trade-offs involved in designing a pension system when workers can avoid participation by working informally. A dynamic behavioral model captures a household’s labor supply, formal/informal sector choice and saving decisions under the rules of Chile’s canonical priva...

Journal: :Infection and immunity 1986
V L Franzon P A Manning

Using antiserum to the purified soluble hemagglutinin we isolated an Escherichia coli K-12 clone expressing the gene for a hemagglutinin from Vibrio cholerae 569B. The plasmid present in this clone was designated pPM471. By deletion analysis with both specific restriction endonucleases and Bal 31 nuclease, we localized the gene, to a 0.72-kilobase region of DNA, implying a molecular weight of l...

Journal: :British Journal of Surgery 2021

Abstract Introduction The recognition of complex colonic polyps is increasing. Management varies considerably and the impact this on clinical outcomes unclear. aim systematic review was to assess group decision-making strategies defined selection criteria treatment polyps. Method A literature identified studies reporting polyp describing their strategies. Databases searched included PubMed, Web...

2013
Mariano Negri Guido Porto Guido G. Porto

This paper studies nonmarket institutions that facilitate exports. In Malawi, as in many other developing countries, farmers face numerous constraints that disconnect them from export markets. We explore the role of a local institution, the burley tobacco clubs, in bridging smallholders to exports. Burley clubs potentially enable farmers to increase their tobacco farming productivity by providi...

1996
Eliana La Ferrara

This paper studies kinship band networks as capital market institutions. It explores two of the channels through which membership in a community where individuals are genealogically linked, such as a kinship group, can a¤ect their access to informal credit. The ...rst is that incentives to default are lower for community members who can expect retaliation to fall on their o¤spring as well as on...

2012
Michael Pickhardt Jordi Sardà

We review existing estimates of the size of the Spanish underground economy, apply the Ahumada et al. (2007, RIW) correction procedure to some of them and calculate the size of the underground economy in Spain for the period 1960 through 2009 by using the modified-cash-deposits-ratio (MCDR) approach recently developed by Pickhardt and Sardà (2011, EJLE). We then extend the MCDR approach with re...

2001
Stefan Dercon Pramila Krishnan

In many developing countries, public programs in the form of food aid distribution and food-for-work programs are often meant to protect vulnerable households from consumption and nutrition downturns by providing a safety net. Few studies have evaluated the impact of these programs. Furthermore, households often use a variety of informal mechanisms to cope with risk, including mutual support an...

2015
Joshua Blumenstock

We provide empirical evidence that Rwandans use the mobile phone network to transfer airtime to those affected by unexpected shocks. Using an extensive dataset on mobile phone activity in Rwanda and exploiting the quasi-random timing and location of natural disasters, we show that individuals make transfers and calls to people affected by disasters. The magnitude of these transfers is small in ...

Journal: :J. Economic Theory 2011
Levon Barseghyan Riccardo DiCecio

Entry costs vary dramatically across countries. To assess their impact we construct a model with endogenous entry and operation decisions by …rms and calibrate it to match the U.S. distribution of …rms by size. Higher entry costs lead to greater misallocation of productive factors and lower TFP and output. In the model, countries in the lowest decile of the entry costs distribution have 1.35 to...

2010
Richard Disney Eleonora Fichera Trudy Owens

This paper uses household data to test whether microfinance institutions created by the Malawian government in the mid-1990s under its Poverty Alleviation Programme crowded out access to informal loans. As in several recent studies, the paper adopts policy evaluation techniques to identify a causal relationship between access to government-sponsored credit programmes and informal loans. After t...

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