Search results for "SPEED"

Accurate measurement of volcanic SO2flux: Determination of plume transport speed and integrated SO2concentration with a single device

2005

[1] Ground-based measurements of volcanic sulfur dioxide fluxes are important indicators of volcanic activity, with application in hazard assessment, and understanding the impacts of volcanic emissions upon the environment and climate. These data are obtained by making traverses underneath the volcanic plume a few kilometers from source with an ultraviolet spectrometer, measuring integrated SO2 concentrations across the plume's cross section, and multiplying by the plume's transport speed. However, plume velocities are usually derived from ground-based anemometers, located many kilometers from the traverse route and hundreds of meters below plume altitude, complicating the experimental desi…

Auditiivisen ja kielellisen harjoittelun vaikutus kolmannella luokalla olevien heikkojen lukijoiden lukutaitoon

2012

Vitesse, accessibilité et étalement urbain ; analyse et application à l'aire urbaine dijonnaise

2003

The set of themes of the city is approached primarily by the means of the residential density. This concept is analyzed from a purely conceptual point of view, then more theoretical (thus making use of rather traditional econometric models: Clark, Newling) for finally being applied to the agglomeration dijonnaise like with its urban surface. One releases the great urban structures thus revealing an intermediate city between the model monocentric and polycentric. The two components are analyzed successively starting from the concept of residential density. Taking as assumption that the cities are dynamic, the second stage is that of urban sprawl out. A first introductory approach attempts to…

Automatic analyzis of droplet impact by high speed imaging

2012

International audience; The impact of agricultural activities on the water quality is the consequence of the loss of fertilisers (chemical fertilisers, livestock effluent, also referred to as farm fertiliser, food-processing effluent and sludge) and crop treatment products (phytosanitary products). This pollution may prevent certain uses of water, notably its use for human and animal food (groundwater and surface water), and leads to a deterioration in aquatic environments. In the domain of vineyard precision spraying research, one of the most important objectives is to minimize the volume of phytosanitary products. It is also to be more environmentally respectful with more effective vine l…

Contributions to the new electronics of the AGATA gamma tracking detector. Design, implementation, test and integration of the digitizers control card

2013

154 páginas. Tesis Doctoral del Departamento de Ingeniería Electrónica de la Universidad de Valencia.

High-speed rail and French cities

2011

Transportation choices in French cities : high-speed rail ; streetcars and bicycles

2011

Analytical-numerical analysis of closed-form dynamic model of Sayano-Shushenskaya hydropower plant : stability, oscillations, and accident

2021

This work is devoted to the analysis of a mathematical model of hydropower unit, consisting of synchronous generator, hydraulic turbine, and speed governor. It is motivated by the accident happened on the Sayano-Shushenskaya hydropower plant in 2009 year. In the analysis we follow the line of classical control theory approach developed in the works of famous scientists J.C. Maxwell, I.A. Vishnegradsky, A.A. Andronov, and F. Tricomi for the study of centrifugal turbine governor and electrical machines limit-load problem. It is shown that the occurrence of vibrations in the Sayano-Shushenskaya hydropower plant can be caused by nonlinear dynamics of the closed-form model. peerReviewed

Oblio e memoria del reato nel sistema penale

2022

La prescrizione del reato è istituto penalistico straordinariamente complesso e di indubbio rilievo strategico per l’equilibrio del sistema penale. Il nesso indissolubile con le funzioni della pena ed il regime giuridico di tipo oggettivo, improntato a sostanziale automatismo ne rivelano il reale significato di elemento strutturale della repressione penale, indispensabile per assicurare la conformità delle dinamiche punitive al naturale decorso delle cose e della vita. Più che una fattispecie di mera non-punibilità sopravvenuta, la prescrizione del reato costituisce dunque una condizione essenziale in negativo per l’applicazione delle norme incriminatrici di parte speciale, per ognuna delle…

Effect of weather conditions on somatic cell score in Sicilian Valle del Belice ewes

2010

Mastitis susceptibility of Valle del Belice ewes from the south of Sicily to temperature, humidity, precipitation, solar radiation, sun hours, air pressure, wind-speed and wind-direction measured by a public weather station was investigated using 65,848 test-day somatic cell score (SCS) records of 5,237 ewes. All weather parameters had an effect on SCS in a regression approach. Extreme values of maximum and minimum temperaturehumidity indices resulted in increased SCS. Higher precipitation, solar radiation and sun hours resulted in increased SCS, whereas higher air pressure and wind speed resulted in reduced SCS.