Within the framework of high speed / high capacity lines operated by ERTMS system (GSM-R, ETCS) a research has been carried out on the possible cause of degradation of GSM-R system, related risks and possible mitigations. Location of the critical zones from the propagation point of view, localization of the possible sources of degradation of the functionality of the system and sources of electr...

BACKGROUND Spatial and temporal heterogeneities in the risk of malaria have led the WHO to recommend fine-scale stratification of the epidemiological situation, making it possible to set up actions and clinical or basic researches targeting high-risk zones. Before initiating such studies it is necessary to define local patterns of malaria transmission and infection (in time and in space) in ord...

Transport modelling and in particular transport assignment is a wellknown bottleneck in computation cost and time for urban system models. The use of Transport Analysis Zones (TAZ) implies a trade-off between computation time and accuracy: practical computational constraints can lead to concessions to zone size with severe repercussions for the quality of the transport representation in urban m...

The aim of this study was to identify various sulfidic mineralized zones in the Ghare-Tappeh Cu deposit (NW Iran) based on geo-electrical data including induced polarization (IP) and resistivity (RS) using the concentration-volume (C-V) and number-size (N-S) fractal models. The fractal models were used to separate high and moderate sulfidic zones from low sulfidic zones and barren wall rocks. B...

This article presents an object-based conceptual framework and numerical algorithms for representing and analyzing coastal morphological and volumetric changes based on repeat airborne light detection and ranging (LiDAR) surveys. This method identifies and delineates individual zones of erosion and deposition as discrete objects. The explicit object representation of erosion and deposition zone...

we use a multi-resolution analysis based on a wavelet transform to upscale a 3d fractured reservoir. this paper describes a 3d, single-phase, and black-oil geological model (gm) that is used to simulate naturally-fractured reservoirs. the absolute permeability and porosity of gm is upscaled by all the possible combinations of haar, bior1.3, and db4 wavelets in three levels of coarsening. the ap...

Our morphological studies have demonstrated that the appearance of localized, paired zones of primary calcification on either side of the midline of the 19-d embryonic chick sternum is heralded by the development of paired, translucent zones 2 d previously. Histological studies demonstrated that the majority of chondrocytes within these translucent zones are hypertrophic, and that the zones are...

Chagas disease is becoming a public health problem in Latin America due to the wide distribution, the high prevalence, the magnitude of the damage caused and the difficulties to control it. In Paraguay, the disease is mainly distributed in the departments of Paraguarí, Cordillera and Central. Prevalence in marginal zones, where migrations from rural populations and endemic areas make possible t...