Search results for "Names"

Recurrence time distribution and temporal clustering properties of a cellular automaton modelling landslide events

2018

Abstract. Reasonable prediction of landslide occurrences in a given area requires the choice of an appropriate probability distribution of recurrence time intervals. Although landslides are widespread and frequent in many parts of the world, complete databases of landslide occurrences over large periods are missing and often such natural disasters are treated as processes uncorrelated in time and, therefore, Poisson distributed. In this paper, we examine the recurrence time statistics of landslide events simulated by a cellular automaton model that reproduces well the actual frequency-size statistics of landslide catalogues. The complex time series are analysed by varying both the threshold…

Rola akronimów w komentarzu politycznym

2009

CLUSTERING INCOMPLETE SPECTRAL DATA WITH ROBUST METHODS

2018

Abstract. Missing value imputation is a common approach for preprocessing incomplete data sets. In case of data clustering, imputation methods may cause unexpected bias because they may change the underlying structure of the data. In order to avoid prior imputation of missing values the computational operations must be projected on the available data values. In this paper, we apply a robust nan-K-spatmed algorithm to the clustering problem on hyperspectral image data. Robust statistics, such as multivariate medians, are more insensitive to outliers than classical statistics relying on the Gaussian assumptions. They are, however, computationally more intractable due to the lack of closed-for…

Spatial localization of hotspots in Fano-resonant plasmonic oligomers for surface-enhanced coherent anti-Stokes Raman scattering

2020

AbstractRealization of Fano resonance in plasmonic oligomers is often exploited to design efficient plasmonic substrates for surface-enhanced coherent anti-Stokes Raman scattering. Disk-type Fano-resonant plasmonic oligomers are widely used to enhance the Raman signal of the probe material. Generally, hot spots are generated in those oligomers at different spatial locations at different wavelengths and only a few spatially overlapping hot spots at multiple wavelengths can be achieved with oblique incidence of excitation light. In this work, we proposed hexagonal gold nanoparticle based Fano-resonant plasmonic oligomers that can yield higher number of spatially overlapped hot spots compared …

Supercontinuum Generation and Intermodal Four-Wave Mixing in a Step-Index Few-Mode Fibre

2019

International audience; The complex spatiotemporal dynamics of nonlinear light propagation in multimode fibers (MMFs) has recently witnessed a renewed interest because of their experimental realization in emerging key areas of laser physics and fiber optics [1]. Specifically, MMFs have a number of linear and nonlinear optical properties that make them very attractive to investigate new spatiotemporal effects fundamentally different from standard single-mode fibers. These include the observation of multimode solitons [2], intermodal four-wave mixing (FWM) [3], geometric parametric instabilities [4], spatial beam self-cleaning [5], and the generation of supercontinuum (SC) light when pumping …

Names of Snakes in Latvian Texts of the Sixteenth and Seventeenth Centuries

2020

Names of Snakes in Latvian Texts of the Sixteenth and Seventeenth Centuries This article analyses the naming of snakes in sixteenth- and seventeenth-century Latvian texts which are taken from the Corpus of Early Written Latvian Texts, containing the first Latvian dictionaries, religious texts, and some secular texts. The objective of the paper is to try to determine how precisely the translators of religious texts rendered names of snakes, and to ascertain whether any semantic changes have taken place, or whether religious texts show specific use. The study also aims to find out if taboo of dangerous animals, snakes in particular, and related euphemisation is reflected in early Latvian text…

On flora semantics in house names found in Vidzeme: materials contained in the 1826 counting of souls in Vidzeme province

2014

On flora semantics in house names found in Vidzeme: materials contained in the 1826 counting of souls in Vidzeme province The information of the counting of souls containing both house names and names of individuals is an essential aspect of historical onomastics. The first counting of souls in Vidzeme took place in 1782 and coincided with the 4 th analogous census of the provinces of Russia. Subsequently these took place at irregular intervals, the 5 th in 1795, the 6 th in 1811, the 7 th in 1816, the 8 th in 1834, the 9 th in 1850, and the final, 10 th in 1858. The number of house names entered in the 1826 counting of souls in Vidzeme province (guberna) is 14,500, including those of peasa…

LFER and the Effect of Temperature on Oxyanion Adsorption by Goethite

2019

A linear relationship between the Gibbs free energy, ΔGr,H+, of the aqueous complex deprotonation reaction, and the Gibbs free energy, ΔGr,ads, of bidentate surface complexation reaction of oxyanions was derived from modelling of temperature dependent batch equilibrium adsorption experiments. As exemplified in this study, this relationship may be exploited to predict temperature-dependent adsorption behavior of oxyanions not yet known such as pertechnetate.

Green approach to corrosion inhibition of stainless steel in phosphoric acid of Artemesia herba albamedium using plant extract

2019

Essential oil from aerial parts of Artemisia herba-alba from Morocco was hydrodistilled and its chemical composition oil was investigated by capillary GC and GC/MS. The major components were 1,8-cineole (35.6%) and camphor (24.1%). Artemisia herba-alba essential oil AHAO was tested as corrosion inhibitor of stainless steel (SS) in 1M H3PO4 using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy measurements (EIS) and scanning electronically microscopy (SEM) studies. The results obtained showed that the essential oil of Artemisia reduces the corrosion rate. Tafel polarization method indicates that the plant extract behaves as a mixed type inhibitor. The inhibition…

Modified Graphene Sheet Stacks for Hydrogen Binding

2017

Results are partially obtained using infrastructure of Lithuanian Energy Institute with support of COST Action MP1103 “Nanostructured materials for solid-state hydrogen storage”. Latvian National Research program IMIS2 is greatly acknowledged for financial support