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Search Results: 1 - 10 of 369184 matches for " Iordan da S; "
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Non existence of Levi flat hypersurfaces with positive normal bundle in compact K?hler manifolds of dimension at least 3
Séverine Biard,Andrei Iordan
Mathematics , 2014,
Abstract: We prove that the normal bundle to the Levi foliation of a smooth Levi flat hypersurface does not admit a Hermitian metric with positive curvature along the leaves in compact K\"ahler manifolds of dimension at least 3. This represents an answer to a conjecture of Marco Brunella.
Lima beans production and economic revenue as function of organic and mineral fertilization
Alves, Adriana U;Oliveira, Ademar P de;Alves, Anarlete U;Dornelas, Carina SM;Alves, Edna U;Cardoso, Edson A;Oliveira, Arnaldo Nonato P de;Cruz, Iordan da S;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000200024
Abstract: lima beans (phaseolus lunatus l.) are alternative food and income sources for the population of northeastern brazil. in this region, lima beans are consumed either as green or dry grains. however, low yields have been observed, a challenge that could be overcome by adequate organic and mineral fertilization. this work intended to assess lima beans yield, cultivar raio de sol, as affected by doses of cattle manure in the presence and absence of mineral npk fertilization. the experiment was carried out at the federal university of paraíba, brazil, from september, 2004 to may, 2005. the experimental design was of randomized blocks, with four replications, 40-plant plots, spaces of 1.00 x 0.50 between and within rows, respectively. treatments were displayed in a 6 x 2 factorial, corresponding to manure doses (0, 10, 20, 30, 40 and 50 t ha-1) and presence and absence of npk. green and dry grain, and pod yields were analysed, as well as the economic revenue for pods and dry grains. to measure the economic efficiency, pods and dry grains were employed as the exchange units. maximum pod yields (12.6 and 11.2 t ha-1) were achieved with 21.4 and 23 t ha-1 of manure, with and without npk, respectively. highest green grain yields (11.1 and 9.9 t ha-1) were obtained with 21.3 and 22.9 t ha-1 of manure, with and without npk, respectively. the highest yield of dry grains (3.5 t ha-1) was obtained with 26.6 t ha-1 of manure combined with npk. in the absence of npk, the use of cattle manure resulted in an average dry grain yield of 2.0 t ha-1. the maximum economic efficiency for pod production was reached with 17 and 18.6 t ha-1 of manure, with predicted net incomes of 2.88 and 3.36 t ha-1 of pods, in the presence and absence of npk, respectively. for dry grains, the maximum economic efficiency was achieved with 23 t ha-1 of manure, in the presence of npk, which produced a net revenue of 2.12 t ha-1 of dry grains.
LE SYSTEME EUROPEEN D’ACQUISITION D’ARMEMENT. FACTEUR DE SOUTIEN DE LA PESD
Cristian Iordan
Romanian Journal of European Affairs (RJEA) , 2010,
Abstract: The European Union needs a solid and effective Security and Defence Policy. The goals of this article are to demonstrate, with recent developments in the matter, major challenges and statistic elements on defence, investment and research budgets: at first, that the process of standardisation and harmonisation at the European level are necessary steps toward the creation of a European system of defence procurement, and secondly, the link between this system and the ESDP.
Quantizations of multiplicative hypertoric varieties at a root of unity
Iordan Ganev
Mathematics , 2014,
Abstract: We construct quantizations of multiplicative hypertoric varieties using an algebra of q-difference operators on affine space, where q is a root of unity in C. The quantization defines a matrix bundle (i.e. Azumaya algebra) over the multiplicative hypertoric variety and admits an explicit finite \'etale splitting. The global sections of this Azumaya algebra is a hypertoric quantum group, and we prove a localization theorem. We introduce a general framework of Frobenius quantum moment maps and their Hamiltonian reductions; our results shed light on an instance of this framework.
Ontologies used for Competence Management
Victoria Iordan,Alexandru Cicortas
Acta Polytechnica Hungarica , 2008,
Abstract: Developing multi-agent systems requires an adequate modeling of knowledge inorder that the agents and the human person are able to understand and accept the conceptsof domain area in the same way. Ontologies allow developing an coherent framework for aspecified domain. Based on the concepts used ant the relations between them, the agentsare able to understand, reason and act in the domain in order to accomplish their goalsand finally the system functions. Based on appropriate ontologies defined for a particulardomain, a multi-agent system that allows managing, searching and matching the usercompetences with the existent competences is presented.
A Multi-Agent Framework for Execution of Complex Applications
Alexandru Cicortas,Victoria Iordan
Acta Polytechnica Hungarica , 2006,
Abstract: Complex applications execution needs a lot of conditions starting with hardwareand software resources until the task sequencing and verifying the results of the execution.The needed resources can be found locally or on the Web and Grid. For an efficient usagethe needed resources application and the effective resources found must be described in anappropriate and way and we propose the XML. The matching between the resources of theapplication and the Web/Grid resources is done in our proposal by the agents. As a newapproach in the last years is the Service Oriented Architecture (SOA) that is developed asan efficient solution. The services are furnished by the providers and these are used by theclients in some specific conditions. The realization of the SOA technology presents a realopportunity to improve effectiveness. On the Web and Grid we dispose for services andthese can be used in a given contest. SOA provides the application of well-foundedconcepts that exploits the ability of modern system resources to collaborate, independent oflocation across heterogeneous technologies.
Modeling of aromatic compound degradation by Pseudomonas putida ATCC 21812
Ludovic Montastruc, Iordan Nikov
Chemical Industry and Chemical Engineering Quarterly , 2006,
Abstract: n/a
Optimal relocation strategies for spatially mobile consumers
Iordan Iordanov,Andrey Vassilev
Mathematics , 2007,
Abstract: We develop a model of the behaviour of a dynamically optimizing economic agent who makes consumption-saving and spatial relocation decisions. We formulate an existence result for the model, derive the necessary conditions for optimality and study the behaviour of the economic agent, focusing on the case of a wage distribution with a single maximum.
References to God and the Christian Tradition in the Treaty Establishing a Constitution for Europe: An Examination of the Background
Iordan Gheorghe Barbulescu,Gabriel Andreescu
Journal for the Study of Religions and Ideologies , 2009,
Abstract: The paper offers a survey of the debate on the introduction, in the Preamble of the Treaty establishing a Constitution for Europe, of references to God and Europe’s Christian tradition. It examines the question of European identity and values which motivates these proposals in relation to (1) the nature of the EU as an essentially political construction; (2) the issue of human rights in the EU; (3) the protection of cultural and religious diversity within the EU. The study shows that the confessionalization of Europe promoted by strong churches on the Continent, which are legitimate actors of civil society, betray a failure to understand the logic of the European construction. To the extent to which they represent an attempt to secure a privileged position with respect to other religious or non-religious actors, they run against the functional principles and values of the Union.
Deformations of Levi flat hypersurfaces in complex manifolds
Paolo de Bartolomeis,Andrei Iordan
Mathematics , 2014,
Abstract: We first give a deformation theory of integrable distributions of codimension 1. We define a parametrization of families of smooth hypersurfaces near a Levi flat hypersurface L such that the Levi flat deformations are given by the solutions of the Maurer-Cartan equation in a DGLA associated to the Levi foliation. We say that L is infinitesimally rigid if the tangent cone at the origin to the moduli space of Levi flat deformations of L is trivial. We prove the infinitesimal rigidity of compact transversally parallelisable Levi flat hypersurfaces in compact complex manifolds and give sufficient conditions for infinitesimal rigidity in Kahler manifolds. As an application, we prove the nonexistence of transversally parallelizable Levi flat hypersurfaces in a class of manifolds which contains the complex projective plane.
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