Search results for "Ilw"
showing 10 items of 93 documents
A French railway network history, between HGIS, geohumanities and adjustment tools
2015
International audience
Définir la fiabilité de l'opérateur humain pour concevoir les futurs systèmes autonomes : un regard des Facteurs Organisationnels et Humains
2022
L'intégration de systèmes autonomes dans les transports continuent de progresser afin d'atteindre, à terme, des systèmes entièrement autonomes. Le domaine du transport ferroviaire ne fait pas exception et de nombreux projets, nationaux ou internationaux, sont en cours ou voient le jour. Le transport ferroviaire est réputé sûr. Cela passe notamment par des processus de certification des systèmes ferroviaires déployés. Un principe fondamental de l'assurance de sécurité ferroviaire est : l'intégration d'une nouvelle fonction ou la modification d'une fonction ne doit pas péjorer le niveau de sécurité. Pour vérifier ce principe, le projet TA-SV a fait le choix de réaliser une comparaison par rap…
Electrochemical identification of flavonoid dyes in solid work of art samples by abrasive voltammetry at paraffin-impregnated graphite electrodes.
2004
Abstract An electrochemical method for identifying flavonoid-type dyes in microsamples from works of art is reported. Square wave voltammograms of natural insoluble dyestuffs based on flavonoid structure dragoon's blood, weld, old fustic, gamboge, Brazilwood and logwood (Campeche wood) attached to paraffin-impregnated graphite electrodes in contact with 0.25 M HAc + 0.25 M NaAc aqueous buffer display characteristic peaks in the potential region between +0.85 and −0.85 V versus AgCl/Ag. Sequential experiments in contact with 0.05 M AlCl 3 and 0.05 M Na 2 MoO 4 plus HAc/NaAc and 0.05 M H 3 BO 3 + 0.10 M NaOH solutions also provide dye-characteristic signals allowing for an unambiguous identi…
"…a počínal tušit, že s obrazy to tady nebude jednoduché." Ekfrastyczność (w) powieści "Cesta do pekel" Václava Vokolka
2019
The article analyses the novel Cesta do pekel written by Václav Vokolek – the Czech prose writer, poet and painter – through the usage of the intersemiotic translation strategies. The plot of the text can be characterized as the contamination of the physically plausible historic world (the construction of the railway in the middle of the 19th century) with the implausible one (the infernal story) according to Lubomír Doležel’s typology. Demonstrating the changes in the arts (the clash of romanticism with realism), the novelist sensitizes the reader to the drastic introversion into nature, as exemplifi ed by the urbanization processes in the north of the Czech Republic. At the same time, the…
Dzelzceļa letālo traumu rašanās mehānismi un morfoloģija
2020
Ievads: Visā pasaulē viens no noteicošajiem faktoriem, spriežot par valsts labklājību, ir konkrētas pilsētas un valsts transporta sistēmas iespējas. Latvijā pēdējā laikā ātri attīstās un pilnveidojas sliežu transporta iespējas, līdz ar to dzelzceļa transportlīdzekļu radīto traumu risks var pieaugt. Latvijā dzelzceļā iegūtas traumas atrodas otrajā vietā aiz autotraumām transporta traumu grupā. Periodā no 01.01.2010 līdz 01.01.2019 Rīgās, Rīgas rajona, Ogres un Jūrmalas teritorijā tika reģīstrētas 94 uz dzelzceļā iegūtas traumas ar letālo iznākumu. Darba mērķi: Noteikt dzelzceļa letālo traumu ietekmējošos riska faktorus traumas gūšanas brīdī; noteikt dzimuma un vecuma grupu sadalījumu dzelzce…
A Logic Fuzzy Model for Evaluation of the Railway Station’s Practice Capacity in Safety Operating Conditions
2013
Abstract The practice capacity of a railway junction depends, in addition to the effective operation’s conditions, by the potential risk factors related to the design plan of the railway station. With the aim of an approach based on the “fuzzy sets” it is possible to determine the numeric value of the practice capacity by the logic - qualitative relations between the features of the railway junction and the potential risk factors. This methodology permits to try out the absolute value of a suitable vector β, (less then the unit) for the utilization of the theoretic capacity in conditions of maximum reliability of the system related to the aspect of safety (technique “fail safe”).
Service Provisioning and User Association for Heterogeneous Wireless Railway Networks
2017
In addition to comforting passengers' journey, the modern railway system is responsible to support a variety of on-board Internet services to meet the passenger's demands on seamless service provisioning. In order to provide wireless access to the train, one idea attracting increasing attention is to deploy a series of track-side access points (TAPs) with high-speed data rates along the rail lines dedicated to the broadband mobile service provisioning on board. Due to the heavy data traffic flushing into the base stations (BSs) of the cellular networks, TAPs act as a complement to the BSs in data delivery. In this paper, we focus on the TAP association problem for service provisioning in a …
The Active Nature of the Soul in Sense Perception: Robert Kilwardby and Peter Olivi
2010
This article discusses the theories of perception of Robert Kilwardby and Peter of John Olivi. Our aim is to show how in challenging certain assumptions of medieval Aristotelian theories of perception they drew on Augustine and argued for the active nature of the soul in sense perception. For both Kilwardby and Olivi, the soul is not passive with respect to perceived objects; rather, it causes its own cognitive acts with respect to external objects and thus allows the subject to perceive them. We also show that Kilwardby and Olivi differ substantially regarding where the activity of the soul is directed to and the role of the sensible species in the process, and we demonstrate that there ar…
Inwestycje w sieci kolejowej Górnego Śląska w latach 1945−1990
2016
The article presents the changes in railway network in Upper Silesia in the years 1950-1990. In the mentioned period, three main processes of change may be distinguished. The period of the expansion of railway lines, which fell mainly for the years 1950−1980 with varying intensity. Besides the construction of new lines and second tracks, a modernization of technical equipment of the railway lines was undertaken. The period 1960−1990, which included the process of implementing the electrical traction in place of the outdated steam traction and the modern, but expensive diesel traction. The last phase of regression (liquidation) of the railway lines, which indicated the first symptoms in the …
Evaluation de l'impact d'un futur remblai de la ligne à Grande Vitesse Est Européenne sur le risque de gel dans le vignoble de Champagne
2002
In order to evaluate for the vineyard, the additional risk of freezing, which could be generated by a railway embankment of the High Speed Line (TGV «Paris-Strasbourg») a canvas cover of the future embankment (length 480 m, height 3 m maxi) was drawn up in the bottom of a wineyard slope. Measurements of Actinothermal Index (AI) Temperatures, at the height of the bud (at 50 cm of the surface) and measurements of of cold air windslopes, were carried out on a microclimatic scale. We recorded 19 points of measurements, without then with the presence of the canvas cover, for the nights characterized by a radiative cooling (wind £ 2m.s-2, clear sky) during spring 2001. The possible incidence of t…