Search results for "500"

Application of Geostatistical Tools to the Geochemical Characterization of the Peloritani Mts (Sicily, Italy) Aquifers

2021

Sources of groundwater contaminants in inhabited areas, located in complex geo-tectonic contexts, are often deeply interlocked, thus, making the discrimination between anthropic and natural origins difficult. In this study, we investigate the Peloritani Mountain aquifers (Sicily, Italy), using the combination of probability plots with concentration contour maps to retrieve an overall view of the groundwater geo-chemistry with a special focus on the flux of heavy metals. In particular, we present a methodology for integrating spatial data with very different levels of precision, acquired before and during the “geomatic era”. Our results depict a complex geochemical layout driven by a geo-puz…

Loredana Foti, Rita: Giudici e Corsari nel Mediterraneo. Il Tribunale delle prede di Sicilia 1808-1813

2018

Estudo sobre o Global Report Initiative de empresas de energia elétrica dos Estados Unidos, do Brasil e da Espanha no período de 1999 a 2010

2013

Para atender às demandas sociais e organizacionais, vários instrumentos têm surgido para auxiliar o processo de geração de informações ambientais, entre eles o Global Reporting Initiative (GRI). Desde 1999, o GRI vem auxiliando as empresas a medirem e comunicarem seu desempenho econômico, ambiental e social. Sua consolidação ao longo da década de 2000 tornou-o um instrumento de grande aceitação pelas organizações e pela sociedade e, como consequência, tornou-se foco de estudos científicos sobre sustentabilidade (econômica, social e ambiental) nas organizações. Neste contexto, emerge a pergunta da atual pesquisa: Qual o perfil das empresas do setor elétrico listadas no GRI? Para responder a …

The “I” between G and C: E-Government intermediaries in developing countries

2011

Published version of an article from the journal: The Electronic Journal of Information Systems in Developing Countries. Also available from the publisher: http://www.ejisdc.org/Ojs2/index.php/ejisdc/article/viewFile/826/371 While there has been a rapid growth in e-Government initiatives in developing countries, whether it has led to providing effective government services to the citizens has remained a question of concern. Evidence suggests that this objective is far from being met. The main hurdle has been that an overwhelming part of the citizens in these countries do not have the capability to either access government information physically or to use it effectively even when they can ac…

The Role of Marketing Tools in the Improvement of Consumers Financial Literacy

2015

Abstract The aim of the paper is to explore the contribution of different types of marketing communication in consumer financial literacy formation from a three component perspective. As a method a survey among the target audience of home loans was used. The authors have focused on consumer financial knowledge, financial behaviour and financial attitude that constitute financial literacy in home loan market. As a result of empirical analysis the authors have found that the biggest contribution to formation of consumers financial literacy (within all three components) have educational web sites of government authorities, official web sites of banks, consultations with bank specialists, schoo…

Road Planning and Route Alignment Selection Criteria in the Norwegian Context

2019

This paper reveals the main factors that guide road alignment design process in Norway. The goal is to discover what constitutes the main priorities for road planners, how these priorities are ranked when it comes to alignment selection, and how they are related to guiding factors identified in official planning documents and government transport plans throughout the life cycle of a road. This is done through a comprehensive literature and data search, involving published academic research in the road alignment design field, and by exploring Norwegian road planning documents and guidelines. Examples from a recently implemented road project are also included as a way to illustrate alignment …

Review of the relationship between aggregates geology and Los Angeles and micro-Deval tests

2021

Rock aggregates constitute the enormous volume of inert construction material used around the globe. The petrologic description as igneous, sedimentary, and metamorphic types establishes the intrinsic formation pattern of the parent rock. The engineering properties of these rocks vary due to the differences in the transformation process (e.g. hydrothermal deposits) and weathering effect. The two most common mechanical tests used to investigate the performance of aggregates are the Los Angeles (LA) and micro-Deval (MD) tests. This study reviewed the geological parameters (including mineralogy, grain and crystal size, grain shape, and porosity) and the relationship to Los Angeles and micro-De…

Teaching computer language handling - From compiler theory to meta-modelling

2011

Published version of a chapter in the book: Generative and Transformational Techniques in Software Engineering III. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-18023-1_14 Most universities teach computer language handling by mainly focussing on compiler theory, although MDA (model-driven architecture) and meta-modelling are increasingly important in the software industry as well as in computer science. In this article, we investigate how traditional compiler theory compares to meta-modelling with regard to formally defining the different aspects of a language, and how we can expand the focus in computer language handling courses to also include meta-model-based…

A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo

2021

This paper presents the gravitational-wave measurement of the Hubble constant (H 0) using the detections from the first and second observing runs of the Advanced LIGO and Virgo detector network. The presence of the transient electromagnetic counterpart of the binary neutron star GW170817 led to the first standard-siren measurement of H 0. Here we additionally use binary black hole detections in conjunction with galaxy catalogs and report a joint measurement. Our updated measurement is H 0 = km s-1 Mpc-1 (68.3% of the highest density posterior interval with a flat-in-log prior) which is an improvement by a factor of 1.04 (about 4%) over the GW170817-only value of km s-1 Mpc-1. A significant …

First narrow-band search for continuous gravitational waves from known pulsars in advanced detector data

2017

Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, {\it narrow-band} analyses methods have been developed, allowing a fully coherent search for gravitational waves from known …