Mass formula for T=0 and T=1 ground states of N=Z nuclei

An algebraic model is developed to calculate the T=0 and T=1 ground state binding energies for N=Z nuclei. The method is tested in the sd shell and is then extended to 28-50 shell which is currently the object of many experimental studies.Comment: 5 figure

Border cities in Portugal-Spain and territorial development trends

Portugal and Spain share what is one of the oldest unchanged national borderlines in the World. It has remained practically unchanged for 800 years. As a result, the formal cross-border cooperation process between the two Iberian countries was only engaged, with significant formal partnerships, after the 1990s, following the implementation of the EU INTERREG-A Communitive Initiative. As time progressed, this Initiative, later on transformed into a EU Cohesion Policy goal (European Territorial Cooperation) contributed to an exponential growth of cross-border cooperation processes, translated into the creation of more than 100 cross-border entities across the Portuguese-Spanning border. These included not only Euroregions, and later on European Groupings of Territorial Cooperation (EGTCs), but also several Eurocities close to the border. Indeed, in a context in which the Portuguese-Spanish border region faces, in vast areas, a dramatic depopulation process, the role of border cities is particularly relevant to retain population and economic activities in the border area. As such, this chapter will analyse the border cities in the Portuguese-Spanish border region and their contribution to the territorial development of this border region. A more detailed analysis will be done to the case of the Eurocity Elvas (PT) - Badajoz (ES).info:eu-repo/semantics/acceptedVersio

Agricultura de precisão: fundamentos, aplicações e perspectivas para a cultura do arroz.

O uso da agricultura de precisão vem se tornando cada vez mais frequente nos países em desenvolvimento e desenvolvidos onde, como nos Estados Unidos e Japão, os governos vêm enfatizando a pesquisa e o desenvolvimento nesta área como uma estratégia nacional (NRC, 1997; Japanese Government, 1998).bitstream/CNPDIA/9498/1/CT30_99.pd

Reconstrução de sinal de medida em sistema de medida de pressão em células vegetais.

bitstream/CNPDIA-2009-09/11901/1/DOC38_2008.pd

Uso de microcontroladores e realidade virtual na agricultura.

bitstream/CNPDIA/10059/1/CT22_97.pd

Excitations and Quantum Fluctuations in Site Diluted Two-Dimensional Antiferromagnets

We study the effect of site dilution and quantum fluctuations in an antiferromagnetic spin system on a square lattice within the linear spin-wave approximation. By performing numerical diagonalization in real space and finite-size scaling, we characterize the nature of the low-energy spin excitations for different dilution fractions up to the classical percolation threshold. We find nontrivial signatures of fractonlike excitations at high frequencies. Our simulations also confirm the existence of an upper bound for the amount of quantum fluctuations in the ground state of the system, leading to the persistence of long-range order up to the percolation threshold. This result is in agreement with recent neutron-scattering experimental data and quantum Monte Carlo numerical calculations. We also show that the absence of a quantum critical point below the classical percolation threshold holds for a large class of systems whose Hamiltonians can be mapped onto a system of coupled noninteracting massless bosons.Comment: RevTex 4, 16 pages, 8 EPS figures, typos corrected, data from Ref. 9 added, few minor changes in the text, to appear in Phys. Rev.

On the relation between the propagators of dual theories

In this paper, we show that the propagator of the dual of a general Proca-like theory, derived from the gauging iterative Noether Dualization Method, can be written by means of a simple relation between known propagators. This result is also a demonstration that the Lagrangian obtained by dualization describes the same physical particles as the ones present in the original theory at the expense of introducing new non-physical (ghosts) excitations.Comment: latex, 4 page

Instrumento de avaliação para otimizar a comunicação interna na Unidade de trabalho.

A comunicação, do ponto de vista empresarial, pode ser entendida como função indispensável de pessoas e organizações, através da qual se conduz uma relação com o meio ambiente, com os outros e com suas próprias partes, mediante processos internos. Entende-se, por isso, que o equilibrio da organização está na disposição ordenada entre as partes que a compõem. Esse equilibrio e integração dependem fundamentalmente do seu processo comunicacional, ou seja, ao se organizar, uma empresa organiza, de fato, o fluxo de informações a ela relacionadas. Assim, estarão organizando suas relações humanas, administrativas e estratégicas entre suas partes funcionais.bitstream/CNPDIA/8888/1/CT09_96.pd