863 research outputs found

    Groundnut Trade Liberalization: Could the South Help the South?

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    This paper analyzes policies affecting global groundnut-products markets. The new US groundnut policy is now a minor source of distortion in world markets where India and China stand out as the major distorters. We analyze and quantify the effects of groundnut-products trade liberalization on consumer welfare and producer income. Our analysis shows that African exporters would gain significantly from reductions in protection and subsidies in India, and to a lesser extent, China, although Chinaï¾’s exports of food-quality groundnuts would expand dramatically. Net-importing OECD countries would suffer from higher world prices. The paper draws direct implications for the Doha trade negotiations.

    Non-Isotropic Angular Distribution for Very Short-Time Gamma-Ray Bursts

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    While most gamma-ray bursts (GRBs) are now believed to be from cosmological distances, the origin of very short-time GRBs is still not known. In the past, we have shown that GRBs with time duration (T90) less than 100 ms may form a separate class of GRBs based on the hardness and time distribution of these events. We have also shown that the ln N ln S distribution is consistent with the expectation of quasi-Euclidean distribution of sources. In this paper, we report the study of the angular location of these GRBs showing a strong deviation from isotropy within the Galactic coordinates of plus 180 degrees < longitude < 90 degrees and -30 degrees < latitude < 30 degrees. We have studied the rest of the GRBs and do not find a similar deviation. This further indicates that the very-short GRBs likely form a separate class of GRBs, most probably from sources of Galactic or near solar origin

    THE IMPACT OF GROUNDNUT TRADE LIBERALIZATION: IMPLICATION FOR THE DOHA ROUND

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    We use a partial-equilibrium multi-market international model to analyze trade and agricultural policies affecting peanut/groundnut products markets. The model covers four goods (food and crush quality groundnuts, groundnut oil and cake) in 13 countries/regions including a large set of developing countries (Argentina, China, the Gambia, India, Malawi, Mexico, Nigeria, Senegal, and South Africa). Welfare is evaluated by looking at the consumer's equivalent variation, quasi-profits in farming (groundnut farming, livestock), quasi-profit in crushing, and taxpayers' revenues and outlays implied by distortions. We calibrate the model on recent historical data. We analyze several groundnut trade liberalization scenarios. The impact of the reforms is measured in deviation from the recent historical baseline. Trade liberalization in groundnut markets has a strong South-South dimension opposing two large developing countries (India and China) to smaller developing countries mainly located in Africa. Current Chinese and Indian policies substantially depress the world prices of edible groundnuts, groundnut oil and groundnut meal. Following the removal of these distortions, African exporters present in these world markets would gain because they are net sellers of the cash crops. Consumers in China and India would be better off as well with lower consumer prices resulting from the removal of high tariffs more than offsetting the higher world prices of groundnut oil. The cost of adjustment would fall on farmers in India and China who would have to shift to other crops or activities. Crushing in India would also decrease because crushing margins would deteriorate. Net buyers of groundnut products in OECD countries will be worse off. We draw implications for Doha negotiations.International Relations/Trade,

    AGRICULTURAL MARKETS LIBERALIZATION AND THE DOHA ROUND

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    Using a partial equilibrium model of world agriculture, we investigate the multilateral removal of all border taxes and farm programs and their distortion of world agricultural markets. These distortions have significant terms-of-trade effects. World trade is also significantly impacted by both types of distortions. Trade expansion is substantial for most commodities, especially dairy, meats, and vegetable oils. Net agricultural and food exporters (Brazil, Australia, and Argentina) emerge with expanded exports; whereas net importing countries with limited distortions before liberalization are penalized by higher world markets prices and reduced imports. The US gains significant export shares in livestock products and imports more dairy products. Without protection and domestic subsidies, the EU loses many of its livestock and dairy export markets.Doha, Agriculture, trade liberalization, domestic policy, International Relations/Trade,

    On the origin of bimodal duration distribution of Gamma Ray Bursts

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    The modified version of a bullet model for gamma ray bursts is studied. The central engine of the source produces multiple sub-jets that are contained within a cone. The emission of photons in the source frame of a sub-jet either takes part in an infinitesimally thin shell, or during its expansion for a finite time. The analysis of the observed profiles of GRBs taken by BATSE leads us to the conclusion that the latter possibility is much more favored. We also study the statistical distribution of GRBs, in the context of their bimodality of durations, taking into account the detector's capability of observing the signal above a certain flux limit. The model with shells emitting for a finite time is able to reproduce only one class of bursts, short or long, depending on the adopted physical parameters. Therefore we suggest that the GRB bimodality is intrinsically connected with two separate classes of sources.Comment: 12 pages, 12 figures; accepted by MNRAS. Small changes to match the corre cted proof

    The Impact of The European Enlargement and CAP Reforms on Agricultural Markets. Much Ado about Nothing?

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    We analyze the effects of the 2004 CAP reform and EU enlargement on European and world agricultural markets. We compare the results from a CAP reform only and a CAP reform plus enlargement scenarios to a no-enlargement baseline implementing Agenda 2000 CAP policies. We utilize the Food and Agricultural Policy Research Institute's policy analysis model to simulate the effects of CAP reform and EU enlargement on production, consumption, and trade for the EU, its New Member States (NMS), and major players in world agricultural markets. The model is a partial-equilibrium model of world agricultural markets including important producer and consumer countries in world livestock and products, dairy, grains, oilseeds and products, cotton and sugar markets. Each country's commodity sectors are modeled with structural equations which incorporate all important policy parameters. With prices in most commodities in the NMS historically below EU-15 prices accession leads to substantial price increases for many commodities in the NMS. Higher prices stimulate production and dampen consumption in the NMS, and trade between the new members and the EU-15 increases. Prices in the EU-15 decrease moderately. The impact of the two reforms on world markets is negligible. The CAP reforms have their greatest impact in the EU-15 markets for meats, rice, rapeseed, and dairy products. CAP reforms without enlargement generate a small increase in world and EU commodity prices.CAP, trade reform, policy reform, enlargement, new member states, European Union, Agricultural and Food Policy, Marketing, F1, Q17, Q18,

    Morphology of the tropopause layer and lower stratosphere above a tropical cyclone : a case study on cyclone Davina (1999)

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    During the APE-THESEO mission in the Indian Ocean the Myasishchev Design Bureau stratospheric research aircraft M55 Geophysica performed a flight over and within the inner core region of tropical cyclone Davina. Measurements of total water, water vapour, temperature, aerosol backscattering, ozone and tracers were made and are discussed here in comparison with the averages of those quantities acquired during the campaign time frame. Temperature anomalies in the tropical tropopause layer (TTL), warmer than average in the lower part and colder than average in the upper TTL were observed. Ozone was strongly reduced compared to its average value, and thick cirrus decks were present up to the cold point, sometimes topped by a layer of very dry air. Evidence for meridional transport of trace gases in the stratosphere above the cyclone was observed and perturbed water distribution in the TTL was documented. The paper discuss possible processes of dehydration induced by the cirrus forming above the cyclone, and change in the chemical tracer and water distribution in the lower stratosphere 400–430 K due to meridional transport from the mid-latitudes and link with Davina. Moreover it compares the data prior and after the cyclone passage to discuss its actual impact on the atmospheric chemistry and thermodynamics

    U.S. Proposal for WTO Agriculture Negotiations: Its Impact on U.S. And World Agriculture

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    The Food and Agricultural Policy Research Institute (FAPRI) analyzed the latest U.S. proposal to the Doha round of WTO negotiations (see Appendix 1, U.S. Proposal for WTO Agriculture Negotiations, USTR, October 10, 2005). While the U.S. proposal provides many concrete steps to reduce farm support and trade distortions, it does not provide all necessary information for quantitative analysis of the proposal. FAPRI, through consultations with economists and staffers of the U.S. Senate Committee on Agriculture, Nutrition and Forestry, Office of the United States Trade Representative, and U.S. Department of Agriculture, elaborated a complementary set of policy assumptions to carry the quantitative analysis. The analysis is conducted in deviation from the baseline of the FAPRI 2005 U.S. and World Agricultural Outlook. New policies put in place since the 2005 baseline was established have been accommodated to separate the impact of the policy scenario from the full set of policy assumptions.

    cis-Acting Complex-Trait-Associated lincRNA Expression Correlates with Modulation of Chromosomal Architecture.

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    Intergenic long noncoding RNAs (lincRNAs) are the largest class of transcripts in the human genome. Although many have recently been linked to complex human traits, the underlying mechanisms for most of these transcripts remain undetermined. We investigated the regulatory roles of a high-confidence and reproducible set of 69 trait-relevant lincRNAs (TR-lincRNAs) in human lymphoblastoid cells whose biological relevance is supported by their evolutionary conservation during recent human history and genetic interactions with other trait-associated loci. Their enrichment in enhancer-like chromatin signatures, interactions with nearby trait-relevant protein-coding loci, and preferential location at topologically associated domain (TAD) boundaries provide evidence that TR-lincRNAs likely regulate proximal trait-relevant gene expression in cis by modulating local chromosomal architecture. This is consistent with the positive and significant correlation found between TR-lincRNA abundance and intra-TAD DNA-DNA contacts. Our results provide insights into the molecular mode of action by which TR-lincRNAs contribute to complex human traits
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