Equivalence of Many-Gluon Green Functions in Duffin-Kemmer-Petieu and Klein-Gordon-Fock Statistical Quantum Field Theories

We prove the equivalence of many-gluon Green functions in Duffin-Kemmer-Petieu and Klein-Gordon-Fock statistical quantum field theories. The proof is based on the functional integral formulation for the statistical generating functional in a finite-temperature quantum field theory. As an illustration, we calculate one-loop polarization operators in both theories and show that their expressions indeed coincide.Comment: 8 page

Classical solutions in five dimensional induced matter theory and its relation to an imperfect fluid

We study five dimensional cosmological models with four dimensional hypersufaces of the Bianchi type I and V. In this way the five dimensional vacuum field equations $\rm G_{AB} = 0$, led us to four dimensional matter equations $\rm G_{\mu\nu}=T_{\mu\nu}$ and the matter is interpreted as a purely geometrical property of a fifth dimension. Also, we find that the energy-momentum tensor induced from the fifth dimension has the structure of an imperfect fluid that has dissipative terms.Comment: 16 pages, latex, no figure

THE AFTA-CEPT and the ASEAN-China Early Harvest Program: An Assessment of Potential Short-run Impact

Theoretical and empirical support for a more liberal trading environment has grown increasingly over the years. In the last decade, many countries have aggressively pursued unilateral trade liberalization. Based on decadal growth rates, globalizing developing countries has outpaced growth of non-globalizing developing economies in the 1980’s and 1990’s. Aside from participation in regular WTO Ministerial to discuss multilateral trade issues, many countries have also entered into bilateral and regional trade agreements (RTA’s). Since 1995, the WTO has received 130 notifications regarding the creation of RTA’s which is slightly higher than the notifications received by GATT over its almost fifty years of existence. In this paper, we aim to sift thru the effects of trade policy on agriculture, focusing in particular on the possible short-run impact of the Common External Preferential Tariffs under the ASEAN Free Trade Agreement (AFTA-CEPT) and the ASEAN-China Early Harvest Program (EHP). While few would argue about the long-run benefits from a liberal trade regime, fewer still would deny the possible short-run adjustment costs that could accompany trade reforms. As such, it would help policy makers to be cognizant of the possible ramifications of pursuing a particular trade strategy. We provide an overview of the Philippine trade policy leading to the AFTA-CEPT and the EHP and isolate their impact. The immediate impact of trade policy is on the effective rate of protection it provides to various sectors. How uniform it is or how diverse reflects the relative protection, how much one sector is favored over another. Ultimately, the resulting trade protection structure would impact on output, income and employment. We measure how the EHP and AFTA impact on these variables. We employ a simulation model following an earlier study under the Joint Tariff Commission-PIDS (TC-PIDS) Study. The simulation analysis is done for three scenarios: (1) the Early Harvest Program, (2) the AFTA-CEPT, and (3) a hypothetical Base scenario reverting tariffs to 1994 levels which allows for comparative analysis that can be useful for policy formulation.Regional trade, ASEAN, China,Early-harvest

Avaliação de genótipos de milho no município de Brasiléia-Acre.

A cultura do milho no município de Brasiléia, assume significa tiva relevância sócio-econômica, contribuindo com 20,65% na produção global do Estado (CEPA/1988). Além de ser utilizado na alimentação humana e ração animal, o excedente da produção tem sido comercializado no mercado local, em Rio Branco e Cobija, cidade frobteiriça (Bolivia). A cultura apresenta problemas diversos: cultivares pouco produtivas, cultivo em consorcio, grandes espaçamentos entre plantas, cultivares de grande porte, índices elevados de acamamento, doenças, ocorrência de baixa produtividade. Estes problemas têm constituído em fatores limitantes a oferta de milho ao mercado, além de resultar no baixo retorno econômico da pequena produção. Com o objetivo de selecionar cultivares mais produtivas e resistentes aos principais problemas da região, a UEPAE de Rio Branco vem desenvolvendo trabalhos no Núcleo de Pesquisa -Quixadá, localizado em Brasiléia.bitstream/item/117388/1/1158.pd