Search results for "Instrument"
showing 10 items of 5652 documents
Valūtu instrumentu laikrindas statistiskā analīze un prognozēšana
2019
Šī darba mērķis ir sniegt Forex tirgus pamatideju pārskatu, izskaidrojot fundamentālos jēdzienus, kas veido šī tirgus bāzi. Dažādo platformu rūpīga izpēte sniedz iespēju dziļāk izprast Forex tirgu, kā arī pievērst uzmanību detaļām, kas svarīgas sev piemērotākas platformas izvēlē. Tehniskā analīze, ko lieto, lai paredzētu cenu virzienu nākotnē, tiek pārveidota tirdzniecības stratēģijās. Lai šīs stratēģijas pamatotu, pāris no tehniskajā analizē izmantotajiem indikatoriem un osciliatoriem tiek analizēti un sniegta to signālu interpretācija. Praktiskajā pētījumā autors izveidojis stratēģiju, kurā pārbauda indikatoru signālus par pirkumu vai pārdošanu un vai pēc signāla saņemšanas tiek sasniegts…
A New Algorithm for the Retrieval of Sun Induced Chlorophyll Fluorescence of Water Bodies Exploiting the Detailed Spectral Shape of Water-Leaving Rad…
2021
Sun induced chlorophyll fluorescence (SICF) emitted by phytoplankton provides considerable insights into the vital role of the carbon productivity of the earth’s aquatic ecosystems. However, the SICF signal leaving a water body is highly affected by the high spectral variability of its optically active constituents. To disentangle the SICF emission from the water-leaving radiance, a new high spectral resolution retrieval algorithm is presented, which significantly improves the fluorescence line height (FLH) method commonly used so far. The proposed algorithm retrieves the reflectance without SICF contribution by the extrapolation of the reflectance from the adjacent regions. Then, the SICF …
An IoT and Fog Computing-Based Monitoring System for Cardiovascular Patients with Automatic ECG Classification Using Deep Neural Networks
2020
Telemedicine and all types of monitoring systems have proven to be a useful and low-cost tool with a high level of applicability in cardiology. The objective of this work is to present an IoT-based monitoring system for cardiovascular patients. The system sends the ECG signal to a Fog layer service by using the LoRa communication protocol. Also, it includes an AI algorithm based on deep learning for the detection of Atrial Fibrillation and other heart rhythms. The automatic detection of arrhythmias can be complementary to the diagnosis made by the physician, achieving a better clinical vision that improves therapeutic decision making. The performance of the proposed system is evaluated on a…
Astronomija. 20: Zemes mākslīgo pavadoņu lāzerlokācija
1995
Krājumā publicētajos zinātniskajos rakstos galvenokārt aplūkotas Zemes mākslīgo pavadoņu lāzerstaciju modernizācijas problēmas, kā ari īsi skarti debess mehānikas un astronomijas pedagoģijas jautājumi.
On the Variability of the Temperature Coefficients of mc-Si Solar Cells with Irradiance
2016
Abstract The temperature sensitivity of silicon solar cells is in general assumed to be constant with irradiance in PV forecasting models, although it has been demonstrated experimentally that this is not true. In this study a theoretical model is established that describes the variation of the temperature coefficients of a silicon solar cell as a function of the irradiance. It is shown that the temperature sensitivity of the solar cell efficiency is decreasing with the irradiance and that the main reason for this behavior comes from the increase of the open-circuit voltage with light intensity. Moreover, a dependency of the cell's ideality factor on the irradiance has to be assumed to rece…
Material multimedia para la docencia de patología y terapéutica dental: Procesos patológicos y procedimientos restauradores
2011
Se presenta imágenes de diferentes procedimientos restauradores dentarios e imágenes de diferentes procesos patológicos que afectan a los dientes.
Heat capacities and volumes of suspensions in the presence of surfactants
2004
Abstract Density and heat capacity measurements of water–surfactant–silica ternary systems were carried out as functions of the silica and the surfactant concentrations at 298 K. From these properties, the apparent molar volume and heat capacity of the surfactant in a given water+silica mixture were evaluated. As well, the apparent specific volume and heat capacity of silica, at a given concentration, in the water+surfactant mixtures as functions of the surfactant concentration were calculated. Some surfactants (decyltrimethylammonium bromide, sodium octanoate, sodium decanoate, sodium dodecanoate, sodium decylsulfate, sodium perfluorooctanoate and N , N -dimethyldodecylamine- N -oxide) wer…
A linear generator for a waveroller power device
2017
In this paper experimental tests on a small scale tubular linear generator to be applied to wave rollers device are presented. A reduced scale of gnerator is presented and experimental results obtained in on test bench are shown. Experimental waveforms of current and voltage are recorded. Simulation results are compared to the experimental ones in order to validate the mathematical models used.
Introduction aux théories et aux méthodes de la mesure en sciences psychologiques et en sciences de l'éducation
2004
Thermal Analysis of the Solar Orbiter PHI Electronics Unit
2020
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