990 resultados para United States. National Aeronautics and Space Administration


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Seasonal and inter-annual variations in phytoplankton community abundance in the Bay of Biscay are studied. Preliminarily processed by the National Aeronautics and Space Administration (NASA) to yield normalized water-leaving radiance and the top-of-the-atmosphere solar radiance, Sea-viewing Wide Field-of-View Sensor (SeaWiFS), Moderate Resolution Imaging Spectroradiometer (MODIS), and Coastal Zone Color Scanner (CZCS) data are further supplied to our dedicated retrieval algorithms to infer the sought for parameters. By applying the National Oceanic and Atmospheric Administration's (NOAA's) Advanced Very High Resolution Radiometer (AVHRR) data, the surface reflection coefficient in the only band in the visible spectrum is derived and employed for analysis. Decadal bridged time series of variations of diatom-dominated phytoplankton and green dinoflagellate Lepidodinium chlorophorum within the shelf zone and the coccolithophore Emiliania huxleyi in the pelagic area of the Bay are documented and analysed in terms of impacts of some biogeochemical and geophysical forcing factors.

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This document provides an overview of the most relevant developments in United States trade policy relating to Latin America and the Caribbean in 2002. U.S. policy continued to promote trade liberalization through advancing negotiations on multiple fronts- globally (WTO), regionally (FTAA) and bilaterally or sub regionally- with a view that the various negotiations are mutually reinforcing and seek to create a constructive competition for liberalization" among trade partners. The passage of Trade Promotion Authority (TPA) included in the Trade Act of August 2002 enhanced the U.S. Administration's ability to negotiate trade agreements. It provided an impetus to conclude bilateral negotiations with Chile as well as to advance a number of trade agreements currently under negotiation, including negotiations toward the Free Trade Area of the Americas (FTAA) and bilateral negotiations with Central America. The Trade Act also renewed the Generalized System of Preferences, extended the Caribbean Trade Partnership Act by liberalizing apparel provisions and augmented the Andean Trade Preference Act, increasing the list of duty free products. On the multilateral front, in partial fulfillment of the Doha mandate, the U.S. tabled in 2002 two comprehensive proposals for the reduction of trade barriers on agricultural and non-agricultural goods. Along with these trade liberalizing proposals, the U.S. Administration imposed temporary safeguard measures on key steel products to provide relief to the sectors of the steel industry that have been most affected by import surges. In addition, the U.S. Congress passed the 2002 Farm Security and Rural Investment Act that substantially increased U.S. domestic farm subsidies to shield domestic farm producers from competition from subsidized products from abroad."

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We present and describe a catalog of galaxy photometric redshifts (photo-z) for the Sloan Digital Sky Survey (SDSS) Co-add Data. We use the artificial neural network (ANN) technique to calculate the photo-z and the nearest neighbor error method to estimate photo-z errors for similar to 13 million objects classified as galaxies in the co-add with r < 24.5. The photo-z and photo-z error estimators are trained and validated on a sample of similar to 83,000 galaxies that have SDSS photometry and spectroscopic redshifts measured by the SDSS Data Release 7 (DR7), the Canadian Network for Observational Cosmology Field Galaxy Survey, the Deep Extragalactic Evolutionary Probe Data Release 3, the VIsible imaging Multi-Object Spectrograph-Very Large Telescope Deep Survey, and the WiggleZ Dark Energy Survey. For the best ANN methods we have tried, we find that 68% of the galaxies in the validation set have a photo-z error smaller than sigma(68) = 0.031. After presenting our results and quality tests, we provide a short guide for users accessing the public data.

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Objective. To determine the association between nativity status and mammography utilization among women in the U.S. and assess whether demographic variables, socioeconomic factors healthcare access, breast cancer risk factors and acculturation variables were predictors in the relationship between nativity status and mammography in the past two years. ^ Methods. The NHIS collects demographic and health information using face-to-face interviews among a representative sample of the U.S. population and a cancer control module assessing screening behaviors is included every five years. Descriptive statistics were used to report demographic characteristics of women aged 40 and older who have received a mammogram in the last 2 years from 2000 and 2005. We used chi square analyses to determine statistically significant differences by mammography screening for each covariate. Logistic regression was used to determine whether demographic characteristics, socioeconomic characteristics, healthcare access, breast cancer risk factors and acculturation variables among foreign-born Hispanics affected the relationship between nativity status and mammography use in the past 2 years. ^ Results. In 2000, the crude model between nativity and mammography was significant but results were not significant after adjusting for health insurance, access and reported health status. Significant results were also reported for years in U.S. and mammography among foreign-born born women. In 2005, the crude model was also significant but results were not significant after adjusting for demographic factors. Furthermore, there was a significant finding between citizenship and mammography in the past 2 years. ^ Conclusions. Our study contributes to the literature as one of the first national-based studies assessing mammography in the past two years based on nativity status. Based on our findings, health insurance and access to care is an important predictor in mammography utilization among foreign-born women. For those with health care access, physician recommendation should further be assessed to determine whether women are made aware of mammography as a means to detect breast cancer at an early stage and further reduce the risk of mortality from the breast cancer.^

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Population; labour force; national product; agriculture; energy; industry; transport; external trade; social statistics; standard of living; trends of major economic indicators in the countries of the Community; supplementary statistics on iron and steel-trends from 1959-64.

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Population; national product; agriculture; energy; industry; transport; external trade; standard of living; trends of major economic indicators in the six

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Population; national product; agriculture; energy; industry; transport; external trade; standard of living; trends of major economic indicators in the six; supplementary statistics on iron and steel-trends from 1952-62; supplementary statistics in an social field-employment, earnings, expenditure, social security

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Population; labour force; national product; agriculture; energy; industry; transport; external trade; social statistics; standar5d of living; trends of major economic indicators in the countries of the community; supplementary statistics on iron and steel-trends from 1956-63

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Population; main-d'oeuvre; produit national; agriculture; energie; industrie; transports; commerce exterieur; statistiques sociales; niveau de vie; evolution des donnees economiques importantes dans les six pays; donnees complementaires sur le siderurgie-evolution de 1959 a 1964