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A Set of GRASS GIS-Based Shell Scripts for the Calculation and Graphical Display of the Main Morphometric Parameters of a River Channel  [PDF]
Aldo Clerici, Susanna Perego
International Journal of Geosciences (IJG) , 2016, DOI: 10.4236/ijg.2016.72011
Abstract: For the analysis of river evolution, the use of quantitative parameters can be quite useful in order to assess changes in the channel planform. Among the several parameters proposed by different authors in a number of papers, channel length and width, braiding and sinuosity indexes, and channel lateral shifting are proved to be the most effective ones for a quantitative analysis of river changes. However, the calculation of these parameters is time-consuming, tedious and error-prone, even where made in a GIS environment. This work describes four shell scripts that perform fast and automatic calculation of the morphometric parameters and draw curves showing thevariation of the calculated parameters along the entire channel development. The scripts arebased on commands of the GRASS GIS free and open source software and, as input, they require a simple vector map containing the essential features of a river channel,i.e.bankfull channel limits and longitudinal and lateral bars.
Aerosol direct radiative effect in the Po Valley region derived from AERONET measurements
M. Clerici ,F. Mélin
Atmospheric Chemistry and Physics (ACP) & Discussions (ACPD) , 2008,
Abstract: The aerosol direct radiative effect (ADRE) affecting the Po Valley and the adjacent North Adriatic Sea is studied using 10-year series of measurements collected at two AERONET sites located in the western part of the Valley (Ispra), and on a platform (AAOT) offshore Venice. This region is characterized by a high, mostly continental, aerosol load with comparable average aerosol optical thickness τa at both locations (0.21 at 500 nm) and more absorbing aerosols at Ispra. A dynamic aerosol model accounting for the changes in scattering phase function with τa is used for radiative transfer calculations, together with boundary conditions representative of terrestrial and marine surfaces. A sensitivity analysis allows the construction of an error budget for the daily ADRE estimates, found to be of the order of 20% and mostly due to uncertainties on aerosol single scattering albedo and τa. The daily radiative efficiencies, normalized by τa at 500 nm, increase from December to June, from 17 to 24 W m 2 τa 1 at top-of-atmosphere (TOA) and 33 to 72 W m 2 τa 1 at surface for the Po Valley, and from 15 to 32 (TOA) and 35 to 65 W m 2 τa 1 (surface) for the AAOT site. The average of log-transformed ADRE for TOA, surface and atmosphere are 5.2, 12.2 and +6.8 W m 2 for the Po Valley case, and 6.5, 13.0 and +6.5 W m 2 for the AAOT site but these values can be much higher for individual days. Concurrent clear-sky days give indications on the regional atmospheric heating spatial gradients. Differences between the atmospheric ADRE at the two locations average 6.3 W m 2 with a gradient positive towards the inner valley in 65% of the cases. This study confirms the importance of duly considering the radiative impact of aerosols on the regional climate.
Aerosol direct radiative effect in the Po Valley region derived from AERONET measurements
M. Clerici,F. Mélin
Atmospheric Chemistry and Physics Discussions , 2008,
Abstract: The aerosol direct radiative effect (ADRE) affecting the Po Valley and the adjacent North Adriatic Sea is studied using 10-year series of measurements collected at two AERONET sites located in the western part of the Valley (Ispra), and on a platform (AAOT) offshore Venice. This region is characterized by a high, mostly continental, aerosol load with comparable average aerosol optical thickness τa at both locations (0.21 at 500 nm) and more absorbing aerosols at Ispra. A dynamic aerosol model accounting for the changes in scattering phase function with τa is used for radiative transfer calculations, together with boundary conditions representative of terrestrial and marine surfaces. A sensitivity analysis allows the construction of an error budget for the daily ADRE estimates, found to be of the order of 20% and mostly due to uncertainties on aerosol single scattering albedo and τa. The daily radiative efficiencies, normalized by τa at 500 nm, increase from December to June, from 17 to 24 W m 2 τa 1 at top-of-atmosphere (TOA) and 33 to 72 W m 2 τa 1 at surface for the Po Valley, and from 15 to 32 (TOA) and 35 to 65 W m 2 τa 1 (surface) for the AAOT site. The average of log-transformed ADRE for TOA, surface and atmosphere are 5.2, 12.2 and +6.8 W m 2 for the Po Valley case, and 6.5, 13.0 and +6.5 W m 2 for the AAOT site but these values can be much higher for individual days. Concurrent clear-sky days give indications on the regional atmospheric heating spatial gradients. Differences between the atmospheric ADRE at the two locations average 6.3 W m 2 with a gradient positive towards the inner valley in 65% of the cases. This study confirms the importance of duly considering the radiative impact of aerosols on the regional climate.
Exploring the Use of MODIS NDVI-Based Phenology Indicators for Classifying Forest General Habitat Categories
Nicola Clerici,Christof J. Weissteiner,France Gerard
Remote Sensing , 2012, DOI: 10.3390/rs4061781
Abstract: The cost effective monitoring of habitats and their biodiversity remains a challenge to date. Earth Observation (EO) has a key role to play in mapping habitat and biodiversity in general, providing tools for the systematic collection of environmental data. The recent GEO-BON European Biodiversity Observation Network project (EBONE) established a framework for an integrated biodiversity monitoring system. Underlying this framework is the idea of integrating in situ with EO and a habitat classification scheme based on General Habitat Categories (GHC), designed with an Earth Observation-perspective. Here we report on EBONE work that explored the use of NDVI-derived phenology metrics for the identification and mapping of Forest GHCs. Thirty-one phenology metrics were extracted from MODIS NDVI time series for Europe. Classifications to discriminate forest types were performed based on a Random Forests? classifier in selected regions. Results indicate that date phenology metrics are generally more significant for forest type discrimination. The achieved class accuracies are generally not satisfactory, except for coniferous forests in homogeneous stands (77–82%). The main causes of low classification accuracies were identified as (i) the spatial resolution of the imagery (250 m) which led to mixed phenology signals; (ii) the GHC scheme classification design, which allows for parcels of heterogeneous covers, and (iii) the low number of the training samples available from field surveys. A mapping strategy integrating EO-based phenology with vegetation height information is expected to be more effective than a purely phenology-based approach.
The association between expressed emotion, illness severity and subjective burden of care in relatives of patients with schizophrenia. Findings from an Italian population
Giuseppe Carrà, Carlo Lorenzo Cazzullo, Massimo Clerici
BMC Psychiatry , 2012, DOI: 10.1186/1471-244x-12-140
Abstract: We performed secondary analyses of baseline data from a randomized controlled trial conducted in Italy.High-EE relatives reported more subjective burden of care in disturbed behaviours and adverse effects areas, but did not perceive more deficits in social role performances. As regards illness severity characteristics, neither the number of previous hospital admissions nor the duration of illness was associated with high-EE. However, patients’ previous psychosocial functioning, as measured by educational attainments, seems to protect the relative from high-EE status.There is a need for cross-cultural comparisons of the subjective experience of distress and burden among high EE carers as a target for intervention, aimed at reducing family stress as much as improving patient outcomes.The roles of families in the care of people with schizophrenia and the ensuing caregiver burden have been increasingly acknowledged in the research literature in the last three decades [1,2]. The construct of burden of care has two distinct components [3]. Objective burden of care is meant to indicate its effects on the household (such as effects on health, financial loss and daily chores), whereas subjective burden indicates the extent to which the caregivers perceive the burden of care. Cultural factors likely play an important role in determining both the perceived burden and relatives’ attitudes towards patients. Their contributions to subjective burden of care and ethnic-related issues have been studied in several contexts in the last few years [4]. Family members in the US white population are significantly more likely than African Americans to feel subjectively burdened by, and have rejecting attitudes towards, their relatives with schizophrenia, as well as to be less tolerant of loss of a productive contributory role. On the other hand, African Americans seem to be less tolerant of disruptive psychotic behaviours [5,6]. Furthermore, US Hispanic families seem to be more accepting o
Autoconcepto y percepción de pautas de crianza en ni?os escolares: Aproximaciones teóricas
Clerici,Gonzalo; García,María Julia;
Anuario de investigaciones , 2010,
Abstract: the objective of the present paper is to present aspects of the theoretical framework of the research project "self concept and parents' rearing practices perceived by children", which is linked to the research project ubacyt p 003 "parents' rearing practices from the children's perspective" under the direction of full professor maría julia garcía. the research discussed here has as main objective to explore the relations between children's self perception and self evaluation and children's perception of parents' rearing practices. the spanish version of peppe ("pratiques éducatives parentales per?ues par i'enfant") by fortin, cyr y chénier (1997), which is an adaptation of the ppi questionnaire ("parental perception inventory") by hazzard, chsristensen y margolin (1983) is employed to inquire about children's perception of parental rearing practices; the spanish version of the "piers-harris children's self-concept scale" (1984), adapted and validated in chile by gorostegui (1992), is employed to explore children's self-concept.
Multiperspective analysis of erosion tolerance
Sparovek, Gerd;De Maria, Isabella Clerici;
Scientia Agricola , 2003, DOI: 10.1590/S0103-90162003000200029
Abstract: erosion tolerance is the most multidisciplinary field of soil erosion research. scientists have shown lack in ability to adequately analyze the huge list of variables that influence soil loss tolerance definitions. for these the perspectives of erosion made by farmers, environmentalists, society and politicians have to be considered simultaneously. partial and biased definitions of erosion tolerance may explain not only the polemic nature of the currently suggested values but also, in part, the nonadoption of the desired levels of erosion control. to move towards a solution, considerable changes would have to occur on how this topic is investigated, especially among scientists, who would have to change methods and strategies and extend the perspective of research out of the boundaries of the physical processes and the frontiers of the academy. a more effective integration and communication with the society and farmers, to learn about their perspective of erosion and a multidisciplinary approach, integrating soil, social, economic and environmental sciences are essential for improved erosion tolerance definitions. in the opinion of the authors, soil erosion research is not moving in this direction and a better understanding of erosion tolerance is not to be expected in the near future.
Responsabilidad Social de la Empresa: análisis de las memorias en Argentina.
Bengua, Joaquín,Clerici, Yamila A.
Gestión Joven , 2009,
Abstract: El presente trabajo refiere a un estudio desarrollado en el marco de una beca de ayudantía de investigación en la Universidad Nacional de Río Cuarto (UNRC), sobre Responsabilidad Social Empresarial (RSE). El objetivo central del estudio es analizar el grado de adopción de las pautas del Global Reporting Initiative (GRI) en la presentación de la información de Sostenibilidad por parte de las entidades radicadas en Argentina. Para ello se recurre al análisis documental de las Memorias de Sostenibilidad de las empresas de Telecomunicaciones, Mineras-Petroleras, Eléctricas y Bancarias presentadas en el a o 2008 correspondientes al periodo 2007.
Multiperspective analysis of erosion tolerance
Sparovek Gerd,De Maria Isabella Clerici
Scientia Agricola , 2003,
Abstract: Erosion tolerance is the most multidisciplinary field of soil erosion research. Scientists have shown lack in ability to adequately analyze the huge list of variables that influence soil loss tolerance definitions. For these the perspectives of erosion made by farmers, environmentalists, society and politicians have to be considered simultaneously. Partial and biased definitions of erosion tolerance may explain not only the polemic nature of the currently suggested values but also, in part, the nonadoption of the desired levels of erosion control. To move towards a solution, considerable changes would have to occur on how this topic is investigated, especially among scientists, who would have to change methods and strategies and extend the perspective of research out of the boundaries of the physical processes and the frontiers of the academy. A more effective integration and communication with the society and farmers, to learn about their perspective of erosion and a multidisciplinary approach, integrating soil, social, economic and environmental sciences are essential for improved erosion tolerance definitions. In the opinion of the authors, soil erosion research is not moving in this direction and a better understanding of erosion tolerance is not to be expected in the near future.
GC/MS: A Valid Tool for Soil Gas Hydrocarbons Speciation  [PDF]
Laura Clerici, Emanuela Mongini, Pasquale Robles, Pierluisa Dellavedova, Maria Antonietta De Gregorio
International Journal of Analytical Mass Spectrometry and Chromatography (IJAMSC) , 2015, DOI: 10.4236/ijamsc.2015.33007
Abstract: This work describes an alternative method based on GC/MS technique with SCAN-ion approach for speciation of hydrocarbons contained in soil gas matrices and sampled on solid sorbent tubes (coconut shell charcoal).
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