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Search Results: 1 - 10 of 5541 matches for " Anello Giovanni "
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An existence theorem for an implicit integral equation with discontinuous right-hand side
Giovanni Anello
Journal of Inequalities and Applications , 2006,
Abstract: We establish a result concerning the existence of solutions for the following implicit integral equation: g( u( t ) )= ( t, x o + ∫ 0 t f( τ,u( τ ) )dτ ) , where is not supposed continuous with respect to the second variable.
An existence theorem for an implicit integral equation with discontinuous right-hand side
Anello Giovanni
Journal of Inequalities and Applications , 2006,
Abstract: We establish a result concerning the existence of solutions for the following implicit integral equation: , where is not supposed continuous with respect to the second variable.
On a Perturbed Dirichlet Problem for a Nonlocal Differential Equation of Kirchhoff Type
Giovanni Anello
Boundary Value Problems , 2011, DOI: 10.1155/2011/891430
Abstract:
On a Perturbed Dirichlet Problem for a Nonlocal Differential Equation of Kirchhoff Type
Anello Giovanni
Boundary Value Problems , 2011,
Abstract: We study the existence of positive solutions to the following nonlocal boundary value problem in , on , where , is a Carathéodory function, is a positive continuous function, and is a real parameter. Direct variational methods are used. In particular, the proof of the main result is based on a property of the infimum on certain spheres of the energy functional associated to problem in , .
Efecto de las Normas y Emociones en los Juicios sobre Satisfacción con la Vida en una Muestra Venezolana
Silvana D′Anello Koch
Revista Interamericana de Psicología , 2006,
Abstract: En las culturas colectivistas una parte significativa de la identidad está conformada por elementos colectivos o factores sociales que pueden influenciar profundamente los juicios sobre la satisfacción con la vida. Estudios han demostrado que Venezuela es un país altamente colectivista. El objetivo del presente estudio fue explorar la importancia relativa de las emociones y creencias normativas en los juicios sobre la satisfacción con la vida. A una muestra de 123 estudiantes de medicina se les aplicó la escala de Balance Afectivo que mide seis emociones positivas y seis negativas, la escala SAVI que mide satisfacción con la vida, la escala SAVINOR que mide las normas para la satisfacción con la vida y la escala de Rosenberg para medir autoestima. Los resultados indicaron que las emociones fueron fuertes predictores de la satisfacción con la vida y, tal como se esperaba, las normas también aportaron una significativa contribución en la explicación de la satisfacción con la vida. La autoestima presentó una asociación más débil. Los hallazgos corroboran la hipótesis sobre los efectos diferenciales de las culturas sobre los determinantes en las percepciones del bienestar psicológico.
Comparative analysis of bed density, total phenol content and protein expression pattern in Posidonia oceanica (L.) Delile  [PDF]
Alice Rotini, Letizia Anello, Maria Di Bernardo, Agata Giallongo, Luigi Valiante, Luciana Migliore
Open Journal of Ecology (OJE) , 2013, DOI: 10.4236/oje.2013.36050
Abstract:

Posidonia oceanicameadows are experiencing a progressive decline, and monitoring their status is crucial for the maintenance of theseecosystems. We performed a comparativeanalysis of bed density, total phenol content and protein expression pattern to assess the conservation status ofPosidoniaplants from the S. Marinella (Rome, Italy) meadow. The total phenol content was inversely related to maximum beddensity, confirming the relationship betweenhigh phenol content and stressful conditions. In addition, protein expression pattern profilesshowed that the number of differentially expressed proteins was dramatically reduced in the latest years compared to previous analyses. Our results support the usefulness of integrating solid descriptors, such as phenol content, with novel biochemical/molecular approaches in the monitoring of meadows.

Polluting Productions and Sustainable Economic Growth: A Local Stability Analysis  [PDF]
Giovanni Bella
Journal of Service Science and Management (JSSM) , 2009, DOI: 10.4236/jssm.2009.21007
Abstract: The aim of this paper is to analyze the link between natural capital and economic growth, in a Romer-type economy characterized by dirty emissions in the production process, and to examine the conditions under which a sustainable growth, which implies a decreasing level of dirty emissions, might be both feasible and optimal. This work is close to Aghion-Howitt (1998) with some more general specifications, in particular regarding the structure of preferences and the technological sector. We also deeply study the transitional dynamics of this economy towards the steady state, and conclude that a determinate saddle path sustainable equilibrium can be reached even in presence of a long run positive level of polluting emissions, thanks to a growing level of new home-made inventories, without whom some indetermi-nacy problems are likely to emerge.
Contestability and Collateral in Credit Markets with Adverse Selection  [PDF]
Giovanni Cesaroni
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.21010
Abstract: The work discusses a basic proposition in the theory of competition in markets with adverse selection. By working out the sequence of market transactions, we show that the effectiveness of collateral in avoiding equilibrium rationing depends on an assumption of uncontestability of the loan market. If contestability is restored to its proper place, the sepa- ration of borrower by means of sufficient collateral does not impede the emergence of credit rationing, which results from a coordination failure among risk-neutral banks. As a consequence, even in a risk-neutral environment with suitable endowments, the use of collateral in credit contracts could not be a socially efficient screening-device. Our conclu- sion on rationing does not stand in contrast with a general result from Gale.
Endogenous Discounting and Global Indeterminacy  [PDF]
Giovanni Bella
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.411080
Abstract:

This paper innovates the literature on endogenous discounting in environmental economics, by studying the global properties of the equilibrium outside the small neighborhood of the steady state. The internalization of individual consumption in the social discount rate is rich of powerful consequences from the economic point of view, for it leads to a qualitative change in the steady state and its transitional dynamics, so that the perfect foresight equilibrium may not be unique, and thus both local and global indeterminacy can eventually emerge. The main implication for decision making is that if indeterminacy occurs, public policies become not sufficient to drive the economy towards the long-run equilibrium. In particular, we show that the onset of parametric restrictions for which both global indeterminacy in the full R3 vector field, and a quasi-periodic dynamics with trajectories wrapped around an invariant torus, may eventually emerge.

Addressing Biodiversity Conservation Methods with Fagus sylvatica Genetic Indicators  [PDF]
Giovanni Figliuolo
Open Journal of Genetics (OJGen) , 2014, DOI: 10.4236/ojgen.2014.42017
Abstract:


Species biological history revealed by genetic indicators can provide guidelines for long-term biodiversity conservation in Natura 2000 network. Fagus sylvatica is the keystone species which regulates in the Mediterranean Eco-Region ecosystem structure, function and composition. Six hundred fifty nine F. sylvatica individuals have been sampled across 20 sites of European interest in Southern Italy and analyzed at 5 microsatellite loci. For sites marked by both maximum heterozygosity (Ho) and minimum heterozygote deficit (Fis) (IT9210210, ITA070099, IT9210205 and IT9220075) it is suggested to avoid impacts by adopting very conservative measures. Promoting migration processes (pollen flow and seed flow) would be appropriate where it has been monitored low heterozygosity and high genetic disequilibrium. Margin effect due to dryness should be buffered with appropriate belts of thermophilus broad leaved tree species.


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