Search results for "ADAR"
showing 10 items of 781 documents
Downscaling hydrodynamics features to depict causes of major productivity of Sicilian-Maltese area and implications for resource management
2018
Abstract Chlorophyll- a ( CHL-a ) and sea surface temperature ( SST ) are generally accepted as proxies for water quality. They can be easily retrieved in a quasi-near real time mode through satellite remote sensing and, as such, they provide an overview of the water quality on a synoptic scale in open waters. Their distributions evolve in space and time in response to local and remote forcing, such as winds and currents, which however have much finer temporal and spatial scales than those resolvable by satellites in spite of recent advances in satellite remote-sensing techniques. Satellite data are often characterized by a moderate temporal resolution to adequately catch the actual sub-gri…
Improving the analysis of biogeochemical patterns associated with internal waves in the strait of Gibraltar using remote sensing images
2018
High Amplitude Internal Waves (HAIWs) are physical processes observed in the Strait of Gibraltar (the narrow channel between the Atlantic Ocean and the Mediterranean Sea). These internal waves are generated over the Camarinal Sill (western side of the strait) during the tidal outflow (toward the Atlantic Ocean) when critical hydraulic conditions are established. HAIWs remain over the sill for up to 4 h until the outflow slackens, being then released (mostly) towards the Mediterranean Sea. These have been previously observed using Synthetic Aperture Radar (SAR), which captures variations in surface water roughness. However, in this work we use high resolution optical remote sensing, with the…
A relict tropical forest bat assemblage from the early Miocene of the Ribesalbes-Alcora Basin (Castelló, Spain)
2020
ABSTRACTWe present the bat assemblage from the early Miocene (MN4, 16.9–15.95 MY) basin of Ribesalbes-Alcora, which has yielded the remains of ten chiropteran taxa. Bat assemblages are rarely recovered in the fluvio-lacustrine fossil record. A bat species described in this work,Cuvierimops penalverisp. nov., is a new form of a typically Oligocene free-tailed bat. In addition, the other molossidsHydromops helveticus,Rhizomops cf.brasiliensis,Chaerephonsp.,Tadaridasp., and the vespertilionidsMyotis cf.intermediusandMiostrellusaff.petersbuchensis, as well as undetermined fossils ascribed to the generaSubmyotodon,Plecotus, andRhinolophusare described. This is the first record of the genusRhizom…
The thermal structure, subglacial topography and surface structures of the NE outlet of Eyjabakkajökull, east Iceland
2020
Abstract This study presents the detailed surveys of the NE outlet of Eyjabakkajokull glacier, East Iceland, from the combination of low-frequency ground penetrating radar (GPR), unmanned aerial vehicle (UAV) and GNSS measurements. Data analyses reveal the complex subglacial topography with a prominent, up to 45-m-deep longitudinal trough in the central part of the outlet that serves as the main trunk for the fast ice flow during the glacier surges. During the last decade (2010–2018), the studied part of the glacier has thinned by 4.37 m/yr on average and the ice margin has retreated ~750 m. We detect a boundary between scatter-free zone and zone of intense scattering near the ice margin an…
Phase-noise Impact on the Performance of mmWave-radars
2019
The impact of phase noise in Frequency Modulated Continuous Wave (FMCW) millimeter-wave (mmWave) radars is investigated in this paper. A FMCW signal is transmitted from the radar, reflected off a moving object and processed at a receiver in the radar. The impact of random phase noise/jitter on the performance parameters of estimated distance, speed and angle of arrival of an object is studied. Our studies show that there exists a threshold at about fifteen percent of the period of the carrier frequency, over which errors substantially manifest in the estimations. Distance estimation is less affected than speed and angle, which rely directly on the phase information for the estimations. Angl…
Ģimenes un pirmsskolas izglītības iestādes sadarbība 1,5 – 3 gadus vecu bērnu adaptācijas veicināšanai
2018
Kvalifikācijas darba tēma: Pirmsskolas izglītības iestādes un ģimenes sadarbība 1,5 – 3 gadus vecu bērnu adaptācijas veicināšanai. Kvalifikācijas darba autors: Anastasija Zujeva. Kvalifikācijas darba zinātniskā vadītāja: Dr. paed. Sanita Baranova. Kvalifikācijas darba mērķis: Teorētiski un praktiski izpētīt pirmsskolas vecuma bērnu adaptāciju, to ietekmējošus faktorus un īpatnības un izstrādāt ieteikumus ģimenes un pirmsskolas izglītības iestādes sadarbībai 1,5 – 3 gadus vecu bērnu adaptācijas veicināšanai. Pētījuma jautājums: Kas jāievēro pirmsskolas izglītības iestādes un ģimenes sadarbībā, lai 1,5 – 3 gadus vecu bērnu adaptācija pirmsskolas izglītības iestādē būtu veiksmīga? Pētījums sas…
Saskarsmes prasmju veicināšanas iespējas rotaļās jaunākā pirmsskolas vecuma bērniem
2019
Saskarsmes prasmju veicināšanas iespējas rotaļās jaunākajā pirmsskolas vecuma bērniem Darba autore: Dita Pērkona, Zinātniskais vadītājs: Mārīte Poiša Diplomdarba apjoms: Darbā analizēti saskarsmes jēdzieni, 2 - 3 gadu vecu bērnu attīstības īpatnības un rotaļas nozīmīgums bērnu saskarsmes prasmju veicināšanai. Piedāvātas rotaļas, kas veicina saskarsmes prasmes, kuras tika pārbaudītas praksē. Atslēgas vārdi: 2-3 gadus veci bērni, sadarbība, rotaļas, saskarsme. Pētījuma mērķis: izzināt saskarsmes prasmju veicināšanas iespējas rotaļās jaunākā pirmsskolas vecuma bērniem. Pētījuma uzdevumi: Analizēt pedagogu un psihologu teorijas par bērnu saskarsmi. Veikt bērnu likumsakarības jaunāškajā pirmssko…
Multitemporal and multiresolution leaf area index retrieval for operational local rice crop monitoring
2016
Abstract This paper presents an operational chain for high-resolution leaf area index (LAI) retrieval from multiresolution satellite data specifically developed for Mediterranean rice areas. The proposed methodology is based on the inversion of the PROSAIL radiative transfer model through the state-of-the-art nonlinear Gaussian process regression (GPR) method. Landsat and SPOT5 data were used for multitemporal LAI retrievals at high-resolution. LAI estimates were validated using time series of in situ LAI measurements collected during the rice season in Spain and Italy. Ground LAI data were collected with smartphones using PocketLAI, a specific phone application for LAI estimation. Temporal…
Logopēda un ģimenes sadarbība skaņu izrunas traucējumu mazināšanā piecgadīgiem bērniem
2015
Darba autore: Gunita Apšukrapša Darba tēma: LOGOPĒDA UN ĢIMENES SADARBĪBA SKAŅU IZRUNAS TRAUCĒJUMU MAZINĀŠANĀ PIECGADĪGIEM BĒRNIEM. Darba veids: Diplomdarbs. Studiju programma: Skolotājs – logopēds 204 CH. Darba zinātniskais vadītājs: Mg. paed. E. Laganovska. Darba apjoms: 38 lpp, ievads, 4 nodaļas, 1 nodaļa ar apakšnodaļām, empīriskā daļa, nobeigums, anotācija, literatūras saraksts, pielikumi. Atslēgas vārdi: logopēds, ģimene, sadarbība, piecgadnieks. Pētījuma mērķis: teorētiski un praktiski noskaidrot logopēda un ģimenes sadarbības iespējas skaņu izrunas traucējumu mazināšanā piecgadīgiem bērniem pirmskolās. Darba saturs: 1. piecgadnieka vecumposma raksturojums; 2. skaņu izrunas traucējum…
Non-invasive Geophysical Surveys in Search of the Roman Temple of Augustus Under the Cathedral of Tarragona (Catalonia, Spain): A Case Study
2018
An integrated geophysical survey has been conducted at the Tarragona’s Cathedral (Catalonia, NE Spain) with the aim to confirm the potential occurrence of archaeological remains of the Roman Temple dedicated to the Emperor Augustus. Many hypotheses have been proposed about its possible location, the last ones regarding the inner part of the Cathedral, which is one of the most renowned temples of Spain (twelfth century) evolving from Romanesque to Gothic styles. A geophysical project including electrical resistivity tomography (ERT) and ground probing radar (GPR) was planned over 1 year considering the administrative and logistic difficulties of such a project inside a cathedral of religious…