Search results for "HRR"
showing 10 items of 11 documents
Monitoring elevation variations in leaf phenology of deciduous broadleaf forests from SPOT/VEGETATION time-series
2011
International audience; In mountain forest ecosystems where elevation gradients are prominent, temperature gradient-based phonological variability can be high. However, there are few studies that assess the capability of remote sensing observations to monitor ecosystem phenology along elevation gradients, despite their relevance under climate change. We investigated the potential of medium resolution remotely sensed data to monitor the elevation variations in the seasonal dynamics of a temperate deciduous broadleaf forested ecosystem. Further, we explored the impact of elevation on the onset of spring leafing. This study was based on the analysis of multi-annual time-series of VEGETATION da…
Quantification of LAI interannual anomalies by adjusting climatological patterns
2011
International audience; Scaling variations and shifts in the timing of seasonal phenology are central features of global change research. In this study, we propose a novel climatology fitting approach to quantify inter-annual anomalies in LAI seasonality. A consistent archive of daily LAI estimates was first derived from historical AVHRR satellite data for the 1981-2000 period over a globally representative sample of sites. The climatology values were then computed by averaging multi-year LAI profiles, gap filling and smoothing to eliminate possible high temporal frequency residual artifacts. The inter-annual variations in LAI were finally quantified by scaling and shifting the seasonal cli…
PRODUCTION OF CANINE MESENCHYMAL STEM CELLS FROM ADIPOSE TISSUE AND APPLICATION IN DOGS WITH CHRONIC OSTEOARTHRITIS OF THE HUMERORADIAL JOINTS
2012
A global Canopy Water Content product from AVHRR/Metop
2020
Abstract Spatially and temporally explicit canopy water content (CWC) data are important for monitoring vegetation status, and constitute essential information for studying ecosystem-climate interactions. Despite many efforts there is currently no operational CWC product available to users. In the context of the Satellite Application Facility for Land Surface Analysis (LSA-SAF), we have developed an algorithm to produce a global dataset of CWC based on data from the Advanced Very High Resolution Radiometer (AVHRR) sensor on board Meteorological–Operational (MetOp) satellites forming the EUMETSAT Polar System (EPS). CWC reflects the water conditions at the leaf level and information related …
Krāsu redzes izvērtēšana ar datorizētu krāsu sakārtošanas testu
2022
Darbs ir uzrakstīts latviešu valodā uz 39 lapaspusēm. Tas satur 23 attēlus, 1 tabulu, 5 pielikumus un 30 atsauces uz literatūras avotiem. Mērķis: izvērtēt krāsu redzi ar datorizētu FM-100 nokrāsu testu, dalībniekiem ar un bez krāsu redzes deficītiem. Salīdzināt iegūtos rezultātus ar fizisko testu rezultātiem (D-15 divas versijas, HRR, aomaloskops, FM-100 nokrāsu tests). Pētījumā piedalījās 30 dalībnieki (vīrieši), pusei dalībnieku tika konstatēti krāsu redzes deficīti. Krāsu sakārtošanas testi tika analizēti ar Vingrys and King-Smith metodi. Izanalizējot datorizētā testa rezultātus tika noteiktas vidējās leņķa vērtības katram krāsu redzes deficītu veidam. Atslēgas vārdi: krāsu redzes deficī…
Adaptaciones a entrenamientos HIIT y aeróbico en distintas edades por análisis de la recuperación de la frecuencia cardíaca mediante el test de 18 mi…
2017
Las enfermedades no transmisibles son la principal causa de mortalidad del mundo con el 68% de las defunciones registradas en 2012; dentro de estas, las enfermedades cardiovasculares son las más destacadas con el doble de incidencia sobre las demás juntas (Organización Mundial de la Salud, 2014). Son un grave problema para la salud y la mayoría de ellas son prevenibles modificando el estilo de vida como uno de los factores que hemos visto en el punto anterior, pues las enfermedades cardiovasculares (EVC) se deben a trastornos del corazón y los vasos sanguíneos no congénitos, teniendo como causas cardinales la falta de actividad física, el consumo de tabaco y una alimentación poco saludable.…
Relationship Between Heart Rate Recovery After Exercise and Maximal Oxygen Uptake in Sedentary Patients with Type 2 Diabetes
2014
AIMS: Heart rate recovery after exercise (HRR) is an estimate of autonomic modulation of the heart, and has been shown to be inversely associated with type 2 diabetes. Type 2 diabetes is associated with decreased maximal oxygen consumption (VO2max). Aim of our study was to assess the relationship between HRR and VO2max in sedentary patients with type 2 diabetes. METHODS: Maximal exercise testing to determine VO2max (ml ∙ Kg-1 ∙ min-1) was performed in 16 sedentary patients with type 2 diabetes (DP) and in 16 age-matched sedentary healthy controls (HS). HRR (bpm) 2 min after cessation of the exercise was recorded. Simple linear regression was used to assess the relations between HRR and VO2m…
CLEARMiner: a new algorithm for mining association patterns on heterogeneous time series from climate data
2010
International audience; Recently, improvements in sensor technology contributed to increasing in spatial data acquisition. The use of remote sensing in many countries and states, where agricultural business is a large part of their gross income, can provide a valuable source to improve their economy. The combination of climate and remote sensing data can reveal useful information, which can help researchers to monitor and estimate the production of agricultural crops. Data mining techniques are the main tools to analyze and extract relationships and patterns. In this context, this paper presents a new algorithm for mining association patterns in Geo-referenced databases of climate and satel…
Comparaison de deux méthodes de correction atmosphérique des données thermiques de Landsat TM
1996
The high resolution of Landsat Thematic Mapper (TM) thermal infrared data can be interesting in applications such as energy balance and crop water stress studies. However, surface temperature measurements are strongly affected by atmospheric effects, particularly by water vapour absorption, therefore a correction method is absolutely necessary. The impossibility of applying a split-window equation and the difficulty of having temporarily coincident radiosondes produce a slight use of Landsat TM data to obtain surface temperature. Vidal et al. show that in a zone with homogeneous climatic conditions, atmospheric correction can be evaluated by using energy balance equation and standard meteor…
Datorizēta FM-100 testa izmantošana hromatiskās jutības sliekšņa noteikšanai
2016
Bakalaura darbs ir uzrakstīts latviešu valodā uz 33 lapaspusēm. Tas satur 17 attēlus, 2 tabulas, 29 atsauces uz literatūras avotiem. Mērķis: aprobēt jaunu nodaļa izveidotu (R.Trukša) FM-100 datorizētu testu cilvēkiem ar krāsu redzes defektiem (KRD) un bez KRD un salīdzināt rezultātus ar HRR testu, D-15 testa divām versijām (Farnsworth un Lanthony) un HMC Oculus anomaloskopu. Pētījumā piedalījās 15 cilvēki, no kuriem 3 bija ar KRD. Datorizēta FM-100 testa datu analīzei izmantoja Vingrys & King-Smith metodi. Izmantojot iegūtos datus tika noteiktas normas vērtības, balstoties uz cilvēku bez KRD rezultātiem.