Search results for " Reference"
showing 10 items of 380 documents
Piecewise planar underwater mosaicing
2015
A commonly ignored problem in planar mosaics, yet often present in practice, is the selection of a reference homography reprojection frame where to attach the successive image frames of the mosaic. A bad choice for the reference frame can lead to severe distortions in the mosaic and can degenerate in incorrect configurations after some sequential frame concatenations. This problem is accentuated in uncontrolled underwater acquisition setups as those provided by AUVs or ROVs due to both the noisy trajectory of the acquisition vehicle — with roll and pitch shakes — and to the non-flat nature of the seabed which tends to break the planarity assumption implicit in the mosaic construction. These…
IL DIRITTO ALLO STUDIO NELLE LEGISLAZIONI REGIONALI.RIFLESSIONI A PARTIRE DALLA LEGGE REGIONALE SICILIANA. 10 DEL 20 GIUGNO 2019
2019
Analisi dei diversi sistemi regionali di tutela del diritto allo studio, partendo dall'analisi della nuova legge regionale siciliana n. 10 del 2019. Essa appare innovativa per molteplici aspetti, sebbene dubbi possono sollevarsi per quanto concerne la concreta attuazione soprattutto dal punto di vista economico, nonchè a causa della forte centralizzazione presso la Giunta regionale delle relative funzioni amministrative. Analysis of the different regional systems of protection of the right to study, starting from the analysis of the new Sicilian regional law n. 10 of 2019. It appears to be innovative in many respects, although doubts may arise as far as verifying the concrete implementation…
Terrorismo e sistema penale: realtà, prospettive, limiti - Presentazione del corso
2017
Il testo riproduce la relazione introduttiva al VII Corso “Giuliano Vassalli” per dottorandi, svoltosi a Noto nel 2016, integrandola con i riferimenti alla struttura dell’inziativa e ai temi a rontati nel corso dei lavori e poi oggetto dei contributi di seguito pubblicati.
Deep Completion Autoencoders for Radio Map Estimation
2022
Radio maps provide metrics such as power spectral density for every location in a geographic area and find numerous applications such as UAV communications, interference control, spectrum management, resource allocation, and network planning to name a few. Radio maps are constructed from measurements collected by spectrum sensors distributed across space. Since radio maps are complicated functions of the spatial coordinates due to the nature of electromagnetic wave propagation, model-free approaches are strongly motivated. Nevertheless, all existing schemes for radio occupancy map estimation rely on interpolation algorithms unable to learn from experience. In contrast, this paper proposes a…
Data-Driven Spectrum Cartography via Deep Completion Autoencoders
2019
Spectrum maps, which provide RF spectrum metrics such as power spectral density for every location in a geographic area, find numerous applications in wireless communications such as interference control, spectrum management, resource allocation, and network planning to name a few. Spectrum cartography techniques construct these maps from a collection of measurements collected by spatially distributed sensors. Due to the nature of the propagation of electromagnetic waves, spectrum maps are complicated functions of the spatial coordinates. For this reason, model-free approaches have been preferred. However, all existing schemes rely on some interpolation algorithm unable to learn from data. …
Arbitrary Phase Access for Stable Fiber Interferometers
2021
Well-controlled yet practical systems that give access to interference effects are critical for established and new functionalities in ultrafast signal processing, quantum photonics, optical coherence characterization, etc. Optical fiber systems constitute a central platform for such technologies. However, harnessing optical interference in a versatile and stable manner remains technologically costly and challenging. Here, degrees of freedom native to optical fibers, i.e., polarization and frequency, are used to demonstrate an easily deployable technique for the retrieval and stabilization of the relative phase in fiber interferometric systems. The scheme gives access (without intricate dev…
Use of Social Reference Groups in Sport Policy Making
1991
Based on reference group theory the purpose of the present study was to determine how sport political decision-makers acted while making decisions, and which reference groups and backgrounds they selected for supporting their behavior. Furthermore, the aim was to find out how the reference group strategy of decision-makers had changed since the middle of the 1970's (Olin, 1982). A sample of 1788 officials and appointed representatives from 167 cities in Finland were selected for the study. The results indicated that the reference groups and backgrounds the majority of the decision-makers chose as bases for their decision behavior in order of descending importance were: the city officials p…
Revista electrónica de investigación y evaluación educativa
2014
Resumen basado en el de la publicación Título, resumen y palabras clave en inglés y español Se presenta una herramienta de consulta para investigadores y profesionales de la investigación social. Está compuesta de una selección de fuentes de información útiles clasificadas en cuatro grupos: catálogos, bases de datos, buscadores y páginas Web en Internet, e instrumentos para la comunicación con otros profesionales. Incluye una breve descripción de cada fuente de información y dirección electrónica necesaria para su localización. Valencia ESP
Pedodiversity
2013
In Chap. 6, dealing with pedodiversity of Italy, Edoardo A. C. Costantini, Roberto Barbetti, Maria Fantappie` , Giovanni L’Abate, Romina Lorenzetti, and Simona Magini illustrate the distribution of soil classes, mainly by means of maps. Soil regions on hills are the most lithologically and climatically variable environments, and host the greatest soil variability and endemisms. A vast majority of the WRB reference soil groups (25 out of 32), as well as soil orders of Soil Taxonomy (10 out of 12) are represented in the main Italian soil typological units (STUs), but the clear skewness and lognormal distribution of STUs demonstrate the utmost endemic nature of many Italian soils. In particula…
An extra-urban soil cadastre for Italy: a first guide for the introduction of soil information
2020
Assuming a positive outcome of the parliamentary procedure for laws and, thus, the transformation of the official cadastre for buildings and land into a soil cadastre (urban, extra-urban and cadastre for the conservation of natural or semi-natural soil diversity) would start a new era for pedology. Finally, after many decades of activity to expand soil culture in Italy, almost all Italian families would be in contact with a soil specialist. Land use and redefined plots would be handled with greater care and responsibility. Experts in agricultural and forestry and biodiversity conservation would have a new impetus in their activity. Furthermore, economists will also have to address new issue…