http://hdl.handle.net/10016/1 Wed, 19 Jun 2013 11:04:46 GMT 2013-06-19T11:04:46Z http://hdl.handle.net/10016/6026 Title: A simplidied model for social welfare analysis : an applications to Spain, 1973-74 to 1980-81 Author(s): Ruiz-Castillo, Javier [jrc] Abstract: Most of the literature on income distribution has been concentrated on inequality. In this paper we introduce also a concern for efficiency in an social welfare model. We propose a simple but useful specification which combines three features: (i) the selection of measurement instruments in the relative and the absolute case on the grounds of their properties for applied work; (ii) a procedure to make welfare comparisons across households with different needs, in a model in which equivalence scales depend only on household size; an (iii) the use of house hold specific statistical price indices to make intertemporal comparisons in teal terms. The methodology is applied to the study of the role of prices and demographic effects in the evolution of the standard of living in Spain from 1973-74 to 1980-81. Wed, 30 Apr 1997 22:00:00 GMT http://hdl.handle.net/10016/6026 1997-04-30T22:00:00Z http://hdl.handle.net/10016/9853 Title: Optimal hedging under departures from the cost of carry valuation: evidence from the spanish stock index futures market Author(s): Lafuente, Juan A. Abstract: This paper provides an a~alytical discussion of the optimal hedge ratio when discrepancies between the futures trading price and its theoretical valuation according to the cost-of-carry model occurs. Under the assumption of a geometric Brownian motion for spot prices we model the mispricing by a new specific noise in the theoretical dynamic of futures market. Empirical evidence above the model is provided for the Spanish stock index futures. Ex-post simulations reveal that hedging effectiveness applying the estimated ratio is similar to the achieved with a systematic unitary hedge ratio, the optimal one when a mispricing does not appear. However, a small number of futures contracts is needed. Fri, 31 Dec 1999 23:00:00 GMT http://hdl.handle.net/10016/9853 1999-12-31T23:00:00Z http://hdl.handle.net/10016/17122 Title: Religious diversity, intolerance and civil conflict Author(s): Gomes, Joseph Flavian Abstract: We compute new measures of religious diversity and intolerance and study their effects on civil conflict. Using a religion tree that describes the relationship between different religions, we compute measures of religious diversity at three different levels of aggregation. We find that religious diversity is a significant and robust correlate of civil conflict. While religious fractionalization significantly reduces conflict, religious polarization increases it. This is most robust at the second level of aggregation which implies that the cleavage between Hindus, Muslims, Jews, and Christians etc. is more relevant than that between either subgroups of religions like Protestants and Catholics, Shias and Sunnis, etc. or that between higher levels of aggregation like Abrahamic and Indian religions. We find religious intolerance to be a significant and robust predictor of conflict. Ethnic polarization ceases to be a robust predictor of civil conflict once we control for religious diversity and intolerance. We find no evidence that some religions are more violent than others. Tue, 30 Apr 2013 22:00:00 GMT http://hdl.handle.net/10016/17122 2013-04-30T22:00:00Z http://hdl.handle.net/10016/16203 Title: Differences in citation impact across countries Author(s): Albarrán, Pedro [palbarra]; Perianes-Rodríguez, Antonio; Ruiz-Castillo, Javier [jrc] Abstract: Using a large dataset, indexed by Thomson Reuters, consisting of 4.4 million articles published in 1998-2003 with a five-year citation window for each year, this paper studies country citation distributions in a partition of the world into 36 countries and two geographical areas in the all-sciences case and eight broad scientific fields. The key findings are the following two. Firstly, the shape of country citation distributions is highly skewed and very similar to each other across all fields. Secondly, differences in country citation distributions appear to have a strong scale factor component. The implication is that, in spite of the skewness of citation distributions, international comparisons of citation impact in terms of country mean citations capture well such scale factors. The empirical scenario described in the paper helps understanding why, in each field and the all-sciences case, the country rankings according to (i) mean citations and (ii) the percentage of articles in each country belonging to the set formed by the 10% of the more highly cited papers are so similar to each other. Fri, 31 May 2013 22:00:00 GMT http://hdl.handle.net/10016/16203 2013-05-31T22:00:00Z