USE OF MODERN TOPOGRAPHICAL EQUIPMENT FOR DRAW UP THE TECHNICAL DOCUMENTATION FOR REHABILITATION OF COUNTY ROAD 643 C HOREZU - DOBRETU, OLT COUNTY

The paper aim is to achieve the situation plan ecessary for design and carrying out the work rehabilitation of county road 643C-Dobretu Horezu, Olt County.The works were executed in the 1970 Stereographic projection system and Black Sea 1975 (for altitudes), using Leica GPS GS 09 and total station LEICA TS 06. With Leica GPS System 09 GS using quick cinematic method (RTK) were determined support points and details on the area, also, using total station LEICA TS 06 has been made a supported traverse with polar coordinates method for thickening the network and surveying planimetric details. In the present case these were considered the most accurate types of measurements that can be applied for surveying the details of the studied area, an area characterized by a part covered by vegetation and personal residences where it was used method of supported traverse, and part free of obstructions where it was used the real time kinematic method (RTK)

Atypical BCS-BEC crossover induced by quantum-size effects

Quantum-size oscillations of the basic physical characteristics of a confined fermionic condensate are a well-known phenomenon. Its conventional understanding is based on the single-particle physics, whereby the oscillations follow the size-dependent changes in the single-particle density of states. Here we present a study of a cigar-shaped ultracold superfluid Fermi gas, which demonstrates an important many-body aspect of the quantum-size effects, overlooked previously. The many-body physics is revealed in the atypical crossover from the Bardeen-Cooper-Schrieffer (BCS) superfluid to the Bose-Einstein condensate (BEC) induced by the size quantization of the particle motion. Quantized perpendicular spectrum results in the formation of single-particle subbands (shells) so that the aggregate fermionic condensate becomes a coherent mixture of subband condensates. Each time when the lower edge of a subband crosses the chemical potential, the BCS-BEC crossover is approached in this subband, and the aggregate condensate contains both the BCS and BEC-like components.Comment: 7 pages, 5 figure

HETEROGENEITY OF RURAL AREA IN ROMANIA

In this paper, we will examine the heterogeneity of rural area viewed from three aspects: morphological, structural and functional. In Romania the rural area holds an important place from the point of view of the heterogeneity of the administrative territory (with small and very small, average, big and very big villages), the agricultural potential (by the contribution of agriculture in realizing the Gross Domestic Product, and demographic (share population in rural area). At the momentover 46% of Romanian population live in the 12957 thousand of rural habitation where the great part of manpower is concentrated in agriculture, sylviculture, fishing, providing a specific and viable life style of inhabitants and through the policies for modernization, the rural feature will be kept in perspective

A Girsanov Result through Birkhoff Integral

A vector-valued version of the Girsanov theorem is presented, for a scalar process with respect to a Banach-valued measure. Previously, a short discussion about the Birkhoff-type integration is outlined, as for example integration by substitution, in order to fix the measure-theoretic tools needed for the main result, Theorem 6, where a martingale equivalent to the underlying vector probability has been obtained in order to represent the modified process as a martingale with the same marginals as the original one

Quantum Transport in a Nanosize Silicon-on-Insulator Metal-Oxide-Semiconductor

An approach is developed for the determination of the current flowing through a nanosize silicon-on-insulator (SOI) metal-oxide-semiconductor field-effect transistors (MOSFET). The quantum mechanical features of the electron transport are extracted from the numerical solution of the quantum Liouville equation in the Wigner function representation. Accounting for electron scattering due to ionized impurities, acoustic phonons and surface roughness at the Si/SiO2 interface, device characteristics are obtained as a function of a channel length. From the Wigner function distributions, the coexistence of the diffusive and the ballistic transport naturally emerges. It is shown that the scattering mechanisms tend to reduce the ballistic component of the transport. The ballistic component increases with decreasing the channel length.Comment: 21 pages, 8 figures, E-mail addresses: [email protected]

Metallic nanograins: spatially nonuniform pairing induced by quantum confinement

It is well-known that the formation of discrete electron levels strongly influences the pairing in metallic nanograins. Here we focus on another effect of quantum confinement in superconducting grains that was not studied previously, i.e., spatially nonuniform pairing. This effect is very significant when single-electron levels form bunches and/or a kind of shell structure: in highly symmetric grains the order parameter can exhibit variations with position by an order of magnitude. Nonuniform pairing is closely related to a quantum-confinement induced modification of the pairing-interaction matrix elements and size-dependent pinning of the chemical potential to groups of degenerate or nearly degenerate levels. For illustration we consider spherical metallic nanograins. We show that the relevant matrix elements are as a rule enhanced in the presence of quantum confinement, which favors spatial variations of the order parameter, compensating the corresponding energy cost. The size-dependent pinning of the chemical potential further increases the spatial variation of the pair condensate. The role of nonuniform pairing is smaller in less symmetric confining geometries and/or in the presence of disorder. However, it always remains of importance when the energy spacing between discrete electron levels $\delta$ is approaching the scale of the bulk gap $\Delta_B$, i.e., $\delta > 0.1$-$0.2\,\Delta_B$

RDF to Conceptual Graphs Translations

International audienceIn this paper we will discuss two different translations between RDF (Resource Description Format) and Conceptual Graphs (CGs). These translations will allow tools like Cogui and Cogitant to be able to import and export RDF(S) documents. The first translation is sound and complete from a reasoning view point but is not visual nor a representation in the spirit of Conceptual Graphs (CGs). The second translation has the advantage of being natural and fully exploiting the CG features, but, on the other hand it does not apply to the whole RDF(S). We aim this paper as a preliminary report of ongoing work looking in detail at different pro and the cons of each approach

ROMANIAN COUNTRYSIDE - SUPPORT FOR THE DEVELOPMENT OF SUSTAINABLE TOURISM

This paper is focused on presenting the particularities of the Romanian rural space from a touristic point of view with its advantages for the tourists and as reason for supporting the development of sustainable tourism. The specificity of natural capital is amplified by spectacular landscapes, varied configuration of land relief, favourable climatic conditions (reduced frequency of negative phenomena, absence of excessive temperatures), therapeutic value and abundance of natural factors (mineral waters and thermal-mineral waters, curative mud, topoclimate and microclimate, etc.), flora and fauna, etc.The natural capital, for which the Romanian rural area represents a „geographic personality”, must be doubled in time by the tourist vocation.Romania holds an immense treasure of archaeological remains, historical, architectural and art monuments, as well as a priceless patrimony which attests the evolution and continuity of work and life on these lands, the development of the culture and arts of the Romanian people. This entire cultural-historical fund represents a significant part of the potential tourist offer (the so-called potential secondary offer) and a component of the tourist image of Romanian on the international market