Keywords: Topology preserving Self-organizing map Growing cell structures Visualization methods Delaunay triangulation The Self-Organizing Map (SOM) is a neural network model that performs an ordered projection of a high dimensional input space in a low-dimensional topological structure. The process in which such mapping is formed is defined by the SOM algorithm, which is a competitive, unsuper...

There are many group communication systems (GCSs) that provide consistent group membership and reliable, ordered multicast properties in the presence of crash faults. However, relatively few GCS implementations are able to provide those properties in the presence of malicious faults resulting from intrusions. We describe the systematic transformation of a crash-tolerant GCS, namely C-Ensemble, ...

We propose that the rotational kinematics of the globular cluster system (GCS) in M31 can result from a past major merger event that could have formed its bulge component. We numerically investigate kinematical properties of globular clusters (GCs) in remnants of galaxy mergers between two discs with GCs in both their disc and halo components. We find that the GCS formed during major merging ca...

Abstract. Indoor Mobile Mapping Systems (IMMSs) technologies are becoming increasingly popular thanks to the possibility of acquiring a massive amount 3D data in fast and effective way those areas where GNSS signal is unavailable, like urban canyons, densely vegetated areas, underground sites buildings. They offer an efficient produce point clouds but with noticeably lower accuracy than traditi...

A bioinformatics survey of putative globins in over 2200 bacterial and some 140 archaeal genomes revealed that over half the bacterial and approximately one fifth of archaeal genomes contain genes encoding globins that were classified into three families: the M (myoglobin-like), and S (sensor) families all exhibiting the canonical 3/3 myoglobin fold, and the T family (truncated myoglobin fold)....

Introduction . The COVID-19 pandemic has challenged health professionals and patients suffering from haematological diseases with embarrassed diagnosis, treatment, surveillance, social distancing other constraints. Aim — addressing therapy for immune thrombocytopenia (ITP) during the in light of own experience, as well national international professional medical community guidelines. Main findi...

We discuss structural and kinematical properties of the stellar halo and the old globular cluster system (GCS) in the Large Magellanic Cloud (LMC) based on numerical simulations of the LMC formation. We particularly discuss the observed possible GCS’s rotational kinematics (V/σ ∼ 2) that appears to be significantly different from the stellar halo’s one with a large velocity dispersion (∼ 50 km ...

U ncertainties in numerical predictions of global weather and climate can often be linked to the representation of fast diabatic processes that act on such small scales that they remain unresolved by the general circulation model (GCM). Such processes include turbulence, convection, clouds, and radiative transfer (e.g., Bony and Dufresne 2005). The functional relationships included in a GCM to ...

Context. Protoplanetary nebulae typically present non-spherical envelopes. The origin of such geometry is still controversial. There are indications that it may be carried over from an earlier phase of stellar evolution, such as the AGB phase. But how early in the star’s evolution does the non-spherical envelope appear? Aims. Li-rich giants show dusty circumstellar envelopes that can help answe...