Search results for "Mali"
showing 10 items of 3900 documents
Hic sunt leones. Note sul testo di commento di un documentario naturalistico,
2017
Analysis of the linkages between rainfall and land surface conditions in the West African monsoon through CMAP, ERS-WSC, and NOAA-AVHRR data
2005
International audience; The European Remote Sensing Wind Scatterometer (ERS-WSC) backscattering coefficient, NOAA Advanced Very High Resolution Radiometer (NOAA-AVHRR) Normalized Difference Vegetation Index (NDVI), and Climate Prediction Center Merged Analysis Precipitation ( CMAP) precipitation data sets are studied over the period August 1991 to December 2000 to document ( 1) the interannual and intra-annual evolutions of vegetation photosynthetic activity and soil-vegetation water content over West Africa and ( 2) their two-way links with precipitation. Over the Sahel, at interannual timescales the strongest relationships between vegetation, soil moisture, and precipitation are observed …
Rotational Raman spectroscopy of ethylene using a femtosecond time-resolved pump-probe technique.
2005
154309; Femtosecond Raman-induced polarization spectroscopy (RIPS) was conducted at low pressure (250 mb at 295 K and 400 mb at 373 K) in ethylene. The temporal signal, resulting from the beating between pure rotational coherences, was measured with a heterodyne detection. The temporal traces were converted to the frequency domain using a Fourier transformation and then analyzed thanks to the D2hTDS software (http://www.u-bourgogne.fr/LPUB/shTDS.html) dedicated to X2Y4 molecules with D2h symmetry. The effective Hamiltonian was expanded up to order 2, allowing the determination of five parameters with an rms of 0.017 cm(-1). Special care was taken in the precise modeling of intensities, taki…
Parameter Rating by Diffusion Gradient
2014
Anomaly detection is a central task in high-dimensional data analysis. It can be performed by using dimensionality reduction methods to obtain a low-dimensional representation of the data, which reveals the geometry and the patterns that exist and govern it. Usually, anomaly detection methods classify high-dimensional vectors that represent data points as either normal or abnormal. Revealing the parameters (i.e., features) that cause detected abnormal behaviors is critical in many applications. However, this problem is not addressed by recent anomaly-detection methods and, specifically, by nonparametric methods, which are based on feature-free analysis of the data. In this chapter, we provi…
Integration of high and low resolution NDVI data for monitoring vegetation in Mediterranean environments
1998
Abstract The integration of the useful features of high and low spatial and temporal resolution satellite data is a major issue in remote sensing studies. The current work presents the development and testing of a procedure based on classification and regression analysis techniques for generating an NDVI data set with the spatial resolution of Landsat TM images and the temporal resolution of NOAA AVHRR maximum-value composites. The procedure begins with a classification of the high resolution TM data which yields land use references. These are degraded to low spatial resolution in order to produce abundance images comparable with the AVHRR data. Linear regressions are then applied between t…
PDB: A pictorial database oriented to data analysis
1993
The paper describes a new pictorial database oriented to image analysis, implemented inside the MIDAS data analysis system. Pictorial databases need expressive data structures in order to represent a wide class of information from the numerical to the visual. The model of the database is relational; however, a full normalization is not achievable, owing to the complexity of the visual information. The paper reports the general design and notes on the software implementation. Preliminary experiments show the performance of the pictorial database. Copyright © 1993 John Wiley & Sons, Ltd
OSA and cancer in Europe: the European Sleep Apnea Database (ESADA) experience
2017
Background: Experimental and clinical studies suggest a relationship between Obstructive Sleep Apnea (OSA) and cancer development or progression Objectives: To explore the association between the severity of OSA and prevalence of cancer among patients reported to the European Sleep Apnea Database (ESADA) after control of several known risk factors for cancer development Methods: A prospective multicentre cohort study of adult patients with OSA (Apnea/Hypopnea Index, AHI≥5). OSA severity was classified according to AHI, Oxygen Desaturation Index (ODI) and % night-time spent with oxygen saturation Results: Of 19,556 participants, 357 (1.8%, 59.4% male) had been diagnosed with malignancy. Pati…
Ar fakultāti saistītu faktu uzskaites formalizēšana
2018
Ontoloģija ir veids, kā aprakstīt kādu konkrētu zināšanu apgabalu un ļauj definēt to saistības un likumus. Pašreizējā situācija ir tāda, ka veidojot, piemēram, akreditācijas dokumentus, nākas saskarties ar to, ka daļa informācijas netiek norādīta pēc vienota principa, tā tika secināts veidojot faktu grupas, kur vienas grupas ietvaros uzskaitītie fakti saturēja atšķirīgu informāciju. Darbā tika pētīts jēdzienu tīkls, ontoloģija un tās veidošanas metodoloģijas un ontoloģiju veidošanas atbalstoša programmatūra. Tika veikta faktu uzskaite, izveidota ontoloģija, kura tiek piedāvāta kā iespējamais faktu formalizēšanas, tāpat tika izvirzīti vairāki iespējamie nākotnes uzdevumi, lai izstrādāto onto…
Prasību vadīta metode datu noliktavas modeļa izveidei
2016
Maģistra darbā „Prasību vadīta metode datu noliktavas modeļa izveidei” ir apskatīta konkrēta datu noliktavas prasību vadīta metode. Šī metode paredz datu noliktavas prasības formalizēt. Autors ir aplūkojis pastāvošos paņēmienus prasību formalizēšanā un līdzīgas datu noliktavas izstrādes metodes. Autors izvērtējis iespēju maģistra darbā aplūkoto datu noliktavas izstrādes metodi pilnveidot, piedāvājot rekomendācijas. Maģistra darbam pastāv praktiskā daļa, kur autors ir izstrādājis rīku, kas nodrošina praktiski lietot maģistra darbā aplūkoto metodi.
‘Dentro la Selva Ercinia’
2008
La digressione sulla Selva Ercinia (De bello Gallico VI, 26-29) è presa in esame da un punto di vista romano, piuttosto che germanico (anche perché Cesare aveva una limitata conoscenza della cultura germanica) e per quanto il suo contenuto può dire degli intendimenti di Cesare. I tre animali descritti (renna, alce, e uro) sono rappresentati secondo le regole del canone letterario e sono stati prescelti per la loro natura topica (e retorica) come emblemi della fauna settentrionale. Cesare vuole anche presentare al suo pubblico nuove specie di animali selvaggi come quelli apprezzati nei ludi circensi e che si potrebbero fare sfilare in un suo trionfo, insistendo al contempo sulla difficoltà/i…