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Search Results: 1 - 10 of 28 matches for " Iuliu VESCAN "
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Nicolae CIANG?,Iuliu VESCAN
Geographia Napocensis , 2007,
Abstract: Capitalization of the Middle Mountains’ Touristic Offer. Case Study: Vl deasa Massif. The authors make a study upon one of the most specific mountainous massifs of Apuseni Mountains – the Vl deasa Massif, with the purpose of its touristic capitalization. In order to do that, there are analysed the impact and the promoting factors related to the natural touristic potential of the relief, the climate, waters and the biogeographical layer with a peculiar value, at which the component of anthropic touristic patrimony is to be added, with a special view upon the rural traditional civilization and culture, with many elements of originality. Their value is emphasized by a communication potential marked by the proximity route of E60 road thoroughfare and by those three roads with a perpendicular penetration on E60. The touristic infrastructure of accommodation, that is rather sketchy and is placed predominantly on the out-skirts, can be made up in a base for a complex arrangement of the massif, stimulating the practicing of types and forms of tourism, which would generate an intense touristic circulation, in which its character of seasonality would lead towards continuous touristic flows.
Uniform Transnational Assessment of the Environmental Indices from the Romanian Catchment Area of the Tisa River
Romanian Review of Regional Studies , 2010,
Abstract: The uniform transnational assessment of the environmental indices in the catchment area of the Tisa river aims at rehabilitating, protecting and conserving the environmental systems, as well as creating a commonly strategic demarche concerning a sustainable spatial development, based on integrated intersectorial approaches of environmental issues, viewed in their territorial dimension. The information necessary in underlining the current situation in the Romanian catchment area of the Tisa has been structured according to the following categories of analysed indices: sources of surface waters, resources of drinkable water and water supply resources, the risk of not reaching the environmental objectives, significant sources of water pollution (punctual sources of pollution, diffuse sources of pollution, significant hydromorphic pressure), the quality of water, significant sources of air pollution, soils affected by agricultural and industrial activities, nature protection and waste management.
-pure submodules
Iuliu Crivei
International Journal of Mathematics and Mathematical Sciences , 2005, DOI: 10.1155/ijmms.2005.491
Abstract: A submodule A of a right R-module B is called s-pure if f⊗R1S is a monomorphism for every simple left R-module S, where f:A→B is the inclusion homomorphism. We establish some properties of s-pure submodules and use s-purity to characterize commutative rings with every maximal ideal idempotent.
Evolutionary Multiobjective Approach for Multilevel Component Composition
Andreea Vescan,Crina Grosan
Studia Universitatis Babes-Bolyai : Series Informatica , 2010,
Abstract: Component-based Software Engineering (CBSE) uses components to construct systems, being a means to increase productivity by promoting software reuse and increasing software quality. The process of assembling component is called component composition. Components are themselves compositions of components. This give rise to the idea of composition levels, where a component on level i may be decomposed (using more components) at level i+1 or compositions at level i+1 serves as component at level i. We are approaching the multilevel component composition problem. We formulate the problem as multiobjective, involving 4 objectives. The approach used is an evolutionary computation technique.
Teaching Model Checking to Undergraduates
Andreea Vescan,Militon Frentiu
Studia Universitatis Babes-Bolyai : Series Informatica , 2010,
Abstract: The way program verification is taught in our faculty is firstly described. One of the verification methods is model checking, shortly presented to the students in one lecture. One laboratory project consists in using the SPIN tool. The difficulties encountered by students with this project are presented in this paper.
Methods of Object Tracking
Annals of Dunarea de Jos , 2009,
Abstract: This paper presents two methods of object detection/tracking in a video. Thefirst method will use the motion tracking technique combined with density detectionwhich will be described. The second one is based on the SURF algorithm.

HM Lu,E Spiecker,W Jger,L Vescan,
E. Spiecker
,W. Jger,L. Vescan

金属学报(英文版) , 2005,
Abstract: Growth and ordering of coherently strained Ge-rich islands in Ge/Si single layer and multilayer systems and the influence of island arrangements on the evolution of the surface morphology of Si cap layers during deposition by low-pressure chemical vapour deposition(LPCVD) on Si(001)substrates at 700℃ have been investigated by TEM of cross-section and plan-view specimens. At distances between the Ge layers of 35-50nm, vertical order of GeSi islands is observed for Ge-Si bilayer systems and for Ge-Si multilayer systems consisting of 5 layer pairs whereas latgreement with earlier results the vertical ordering in the multilayer system can be understood as result of the elastic interaction between island nuclei forming in the layers with close islands in the elastic interaction. Characteristic for all Si surfaces are the spatial correlation between the presence of island-induced lattice strain and the appearance of arrays of larger square-shaped of the control of growth parameters and of the island-induced strain state for the evolution of the Si top layer surface morphology during LPCVD growth.
Estudo dos fluidos associados com a epissienitiza??o de granitos biotíticos do Gerês e da Guarda (Portugal)
Jaques,Luís; Bobos,Iuliu; Noronha,Fernando;
Comunica??es Geológicas , 2010,
Abstract: in granites, particularly from gerês and guarda regions, occur reddish altered rocks, commonly known as “episyenites”. these rocks resulted from a hydrothermal alteration process and involved alkali metasomatism, magmatic quartz dissolution and transformation of the primary minerals present in granites. the hydrothermal fluids, directly associated with the episyenitization process, were trapped in quartz microfractures - fluid inclusion planes (fip), consistent with the most important directions of altered structures. these fluids are low-salinity aqueous fluids from the h2o-nacl system and homogenization temperatures lower than 300 oc. they have an alkaline character, possibly with a meteoric origin and circulated to a depth lower than 5 km during the final events of the hercynian orogeny.
Geometric algebra and M-theory compactifications
Calin Iuliu Lazaroiu,Elena-Mirela Babalic
Mathematics , 2013,
Abstract: We show how supersymmetry conditions for flux compactifications of supergravity and string theory can be described in terms of a flat subalgebra of the Kahler-Atiyah algebra of the compactification space, a description which has wide-ranging applications. As a motivating example, we consider the most general M-theory compactifications on eight-manifolds down to AdS3 spaces which preserve N=2 supersymmetry in 3 dimensions. We also give a brief sketch of the lift of such equations to the cone over the compactification space and of the geometric algebra approach to `constrained generalized Killing pinors', which forms the technical and conceptual core of our investigation.
Singular foliations for M-theory compactification
Elena Mirela Babalic,Calin Iuliu Lazaroiu
Mathematics , 2014,
Abstract: We use the theory of singular foliations to study ${\cal N}=1$ compactifications of eleven-dimensional supergravity on eight-manifolds $M$ down to $\mathrm{AdS}_3$ spaces, allowing for the possibility that the internal part $\xi$ of the supersymmetry generator is chiral on some locus ${\cal W}$ which does not coincide with $M$. We show that the complement $M\setminus {\cal W}$ must be a dense open subset of $M$ and that $M$ admits a singular foliation ${\bar {\cal F}}$ endowed with a longitudinal $G_2$ structure and defined by a closed one-form $\boldsymbol{\omega}$, whose geometry is determined by the supersymmetry conditions. The singular leaves are those leaves which meet ${\cal W}$. When $\boldsymbol{\omega}$ is a Morse form, the chiral locus is a finite set of points, consisting of isolated zero-dimensional leaves and of conical singularities of seven-dimensional leaves. In that case, we describe the topology of ${\bar {\cal F}}$ using results from Novikov theory. We also show how this description fits in with previous formulas which were extracted by exploiting the $\mathrm{Spin}(7)_\pm$ structures which exist on the complement of ${\cal W}$.
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