16,138 research outputs found
The Socioeconomic Status of Hispanic New Yorkers: Current Trends and Future Prospects
Presents data showing the major demographic and socioeconomic changes in the Hispanic population of New York during the 1990s. Examines the trends in income, poverty, labor force status, and other economic and demographic indicators
theory of weights for rough homogeneous singular integrals and commutators
Quantitative estimates for rough homogeneous singular
integrals and commutators of symbols and are
obtained. In particular the following estimates are proved: % %
and % % for and .Comment: 19 page
Economic perspectives for Central America after CAFTA; a GTAP-based analysis
Using a GTAP CGE application, we assess the main economic results of CAFTA for Central America (CA). Currently, Central America enjoys preferential access to the US market through the Caribbean Basin Initiative (CBI). CAFTA will consolidate and augment these concessions. Meanwhile, the agreement requires widespread opening of CA markets to US imports over time. The implementation of the ATC protocol in 2005 implies increased Chinese competition for the region in the textile and apparel sectors. CAFTA will balance for this new source of competition by allowing better access for CA textiles and apparel products, while creating large opportunities for labour market improvements and FDI inflows to Central America. If these opportunities are exploited, the region has much to gain from CAFTA. However, we also find a strong sectoral readjustment from agricultural sectors to maquila-based industries, which could create important adjustment strains.
Supersymmetric classical cosmology
In this work a supersymmetric cosmological model is analyzed in which we
consider a general superfield action of a homogeneous scalar field
supermultiplet interacting with the scale factor in a supersymmetric FRW model.
There appear fermionic superpartners associated with both the scale factor and
the scalar field, and classical equations of motion are obtained from the
super-Wheeler-DeWitt equation through the usual WKB method. The resulting
supersymmetric Einstein-Klein-Gordon equations contain extra radiation and
stiff matter terms, and we study their solutions in flat space for different
scalar field potentials. The solutions are compared to the standard case, in
particular those corresponding to the exponential potential, and their
implications for the dynamics of the early Universe are discussed in turn.Comment: 9 pages, 4 eps figures, uses RevTe
Risk premium: insights over the threshold
The aim of this paper is twofold: First to test the adequacy of Pareto distributions to describe the tail of financial returns in emerging and developed markets, and second to study the possible correlation between stock market indices observed returns and return's extreme distributional characteristics measured by Value at Risk and Expected Shortfall. We test the empirical model using daily data from 41 countries, in the period from 1995 to 2005. The findings support the adequacy of Pareto distributions and the use of a log linear regression estimation of their parameters, as an alternative for the usually employed Hill's estimator. We also report a significant relationship between extreme distributional characteristics and observed returns, especially for developed countries
Sustainability management teaching resources and the challenge of balancing planet, people, and profits
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