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Search Results: 1 - 10 of 178155 matches for " Luca De Peri "
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Cognitive Remediation in Schizophrenia: Current Status and Future Perspectives
Stefano Barlati,Giacomo Deste,Luca De Peri,Cassandra Ariu,Antonio Vita
Schizophrenia Research and Treatment , 2013, DOI: 10.1155/2013/156084
Abstract: Objectives. This study is aimed to review the current scientific literature on cognitive remediation in schizophrenia. In particular, the main structured protocols of cognitive remediation developed for schizophrenia are presented and the main results reported in recent meta-analyses are summarized. Possible benefits of cognitive remediation in the early course of schizophrenia and in subjects at risk for psychosis are also discussed. Methods. Electronic search of the relevant studies which appeared in the PubMed database until April 2013 has been performed and all the meta-analyses and review articles on cognitive remediation in schizophrenia have been also taken into account. Results. Numerous intervention programs have been designed, applied, and evaluated, with the objective of improving cognition and social functioning in schizophrenia. Several quantitative reviews have established that cognitive remediation is effective in reducing cognitive deficits and in improving functional outcome of the disorder. Furthermore, the studies available support the usefulness of cognitive remediation when applied in the early course of schizophrenia and even in subjects at risk of the disease. Conclusions. Cognitive remediation is a promising approach to improve real-world functioning in schizophrenia and should be considered a key strategy for early intervention in the psychoses. 1. Introduction Impairments in a wide range of cognitive abilities have been consistently reported in individuals with schizophrenia [1]. In the recent past, the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) project has identified seven distinct cognitive domains that are impaired in patients with schizophrenia: speed of processing, attention/vigilance, working memory, verbal and visual learning, reasoning and problem solving, and social cognition [2]. Moreover, in the third meeting of the Cognitive Neuroscience Treatment Research to Improve Cognition in Schizophrenia (CNTRICS) project, it was agreed that six areas or cognitive domains suffered impairment in schizophrenia: perception, working memory, attention, executive functions, long-term memory, and social cognition [3]. Social cognitive deficits include impairments in facial affect recognition, in perceiving and interpreting social cues, theory of mind (ToM), and the ability to make appropriate causal attributions for events [4]. Both neurocognitive and social cognitive deficits are thought to underlie the severe functional disabilities associated with schizophrenia, and several studies have
Electromotive Force Generation with Hydrogen Release by Salt Water Flow under a Transverse Magnetic Field  [PDF]
Roberto De Luca
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.210138
Abstract: By considering an electrolyte solution in motion in a duct under a transverse magnetic field, we notice that a so called Faraday voltage arises because of the Lorentz force acting on anions and cations in the fluid. When salt water is considered, hydrogen production takes place at one of the electrodes if an electric current, generated by Faraday voltage, flows in an external circuit. The maximum amount of hydrogen production rate is calculated by basic electrochemical concepts.
Ordinal Logistic Regression for the Estimate of the Response Functions in the Conjoint Analysis  [PDF]
Amedeo De Luca
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.34051
Abstract: In the Conjoint Analysis (COA) model proposed here – a new approach to estimate more than one response function–an extension of the traditional COA, the polytomous response variable (i.e. evaluation of the overall desirability of alternative product profiles) is described by a sequence of binary variables. To link the categories of overall evaluation to the factor levels, we adopt – at the aggregate level – an ordinal logistic regression, based on a main effects experimental design.The model provides several overall desirability functions (aggregated part-worths sets), as many as the overall ordered categories are, unlike the traditional metric and non metric COA, which gives only one response function. We provide an application of the model and an interpretation of the main effects.
Time delay in non-lethal infectious diseases  [PDF]
R. De Luca
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.48075
Abstract: The effects of the incubation period q on the dynamics of non-lethal infectious diseases in a fixed-size population are studied by means of a delay differential equation model. It is noted that the ratio between the quantity q and the time τ for recovering from the illness plays an important role in the onset of the epidemic breakthrough. An approximate analytic expression for the solution of the delay differential equation governing the dynamics of the system is proposed and a comparison is made with the classical SEIR model.
Positive Field-Cooled Susceptibility in Multiply Connected Type-I Superconductors  [PDF]
Roberto De Luca
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.46A002

A detailed analysis of the magnetic response of field-cooled type-I superconducting hollow cylinders shows that the so-called “paramagnetic Meissner effect” can take place in opportunely devised multiply connected superconductors. Adopting simple circuital analogs of the latter superconducting systems, the magnetic susceptibility of micro-cylinders with one or two holes is studied by means of energy considerations.

Quantum Interference in Josephson Junctions  [PDF]
Roberto De Luca
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.65057
Abstract: The parallelism between diffraction and interference in optics and quantum interference in Josephson junctions is discussed and studied in details. The interdisciplinary character of the present work is highlighted through specific examples. The Fraunhofer-like pattern of the maximum Josephson current in a single Josephson junction and the periodic field dependence of the critical current in two-junction and in multi-junction quantum interferometers is analyzed and discussed in comparison with the homologous classical optical phenomena.
Leafhoppers and Cixiids in Phytoplasma-infected Carrot Fields: Species Composition and Potential Phytoplasma Vectors
Tanja Drobnjakovi?,Pantelija Peri,Dejan Mar?i?,Luca Picciau
Pesticidi i Fitomedicina , 2010,
Abstract: The first molecular analysis of samples collected in southern Ba ka (Serbia) confirmed the presence of aster yellows (16SrI) and stolbur phytoplasmas (16SrXII) in insects belonging to the family Cicadellidae, as well as in carrot plants where the insects were collected. A correct identification of the phytoplasmas and their vectors is essential to arrange effective control strategies to prevent diseases associated with phytoplasmas from spreading to carrots and other vegetable crops. In order to enhance knowledgeabout insect vectors of aster yellows and stolbur phytoplasmas in Serbia, Cicadellidae and Cixiidae (Homoptera Auchenorrhyncha), the most common vectors of these phytoplasmas,were monitored in southern Ba ka during 2008. Adults leaf- and planthoppers were collected and identified at species level using standard entomological methods,and tested for phytoplasma presence by means of PCR/RFLP. A total of 13 insect species of Cicadellidae were identified, as follows: a) three species of the subfamily Agallinae: Anaceratagallia ribauti (Ossiannilsson), Anaceratagallia venosa (Fourcroy),and Anaceratagallia laevis (Ribaut); b) seven species of the subfamily Deltocephalinae: Psammotettix confinis (Dahlbom), Psammotettix striatus (Linnaues) Psammottettix alienus (Dahlbom), Macrosteles sexnotatus (Fallén), Ophiola decumana (Kontkanen),Errastunus ocellaris Fallén, and Scaphoideus titanus Ball; c) three species of the subfamily Typhlocibinae: Eupteryx atropunctata (Goeze), Eupteryx mellissae Curtis, Zyginidia pullula (Boheman). Female specimens of the genus Euscelis (Deltocephalinae) were also collected, as well as one species of Reptalus quinquecostatus (Dufour) of the family Cixiidae. Stolbur phytoplasmas were detected in A. laevis, A. ribauti, A. venosa, P. striatus, P. confinis and P. alienus. The species: A. laevis, O. decumana, and P. confinis were AY-infected (subgroup 16SrI-A), while subgroup 16SrI-C was found only in one specimen of P. confinis. Since some aster yellows- and stolbur-infected species of the genera Psammotettix and Anaceratagallia (especially P. confinis and A. laevis) were regularly and commonly found in the infected carrot fields during the whole vegetative period, they could play a significant role in transmitting and spreading these pathogens in natural environment.
Italy and Mozambique: Science, Economy & Society within a History of an Anomalous Cooperation  [PDF]
Luca Bussotti, Antonella De Muti
Advances in Historical Studies (AHS) , 2013, DOI: 10.4236/ahs.2013.24023
Abstract: In this article the authors aim at showing how an “anomalous” international and very intense cooperation between Italy and Mozambiquewas born. In fact, Italy has not a strong colonial tradition, especially in Mozambique, so it seems interesting to try to understand the reason why this former Portuguese colony has become the Italian most important partner in its cooperation activity. This analysis is based on the main hypothesis related to the birth of international bilateral cooperation: they have been seriously considered in order to explain the origin of this strange relationship, but they cannot completely clarify this particular case. According to the Italian social and political recent history, the privileged relationship with Mozambiqueis due more to a “bottom up” process than to geo-strategic or economic reasons. The fact that Mozambique had belonged to a weak Western power such as Portugal certainly gave Italy the opportunity to penetrate more easily in this country than in the ones which had been under the strong dominion of France or England. One of the most important results of this “anomalous” cooperation has to be found in the scientific fields (such as geology, architecture, biotechnologies) and in its impact on the development of Mozambique.
Design and Performance Evaluation of Piezo-Driven Synthetic Jet Devices  [PDF]
M. Chiatto, L. de Luca
World Journal of Engineering and Technology (WJET) , 2016, DOI: 10.4236/wjet.2016.43D014
In the last two decades synthetic jet actuators have gained much interest among flow control techniques due to their short response time, high jet velocity and absence of traditional piping, that matches the requirements of reduced size and low weight. A synthetic jet is generated by the diaphragm oscillation (generally driven by a piezo- electric element) in a relatively small cavity, producing periodic cavity pressure variations associated to cavity volume changes. The high pressure air exhausts through an orifice, converting membrane elastic energy in jet kinetic energy. This review paper faces the development of various lumped-element models (LEM) as practical tools to design and manufacturing actuators. LEM can predict quickly device performances such as frequency response in terms of membrane displacement, cavity pressure and jet velocity, as well as efficiency of energy conversion of input Joule power into useful kinetic power of air jet. Actuator performance is analyzed also by varying typical geometric parameters such as cavity height and orifice diameter and length, through a proper dimensionless form of the governing equations.
A Synchronous and Deterministic MAC Protocol for Wireless Communications on Linear Topologies  [PDF]
Daniele De Caneva, Pier Luca Montessoro
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.312126
Abstract: Linear topology is useful in several pervasive application scenarios. Even though a linear topology can be handled by unspecific routing algorithms over general purpose MAC protocols, better performance can be obtained by specialized techniques. This paper describes a new communication scheme called Wireless Wire (WiWi), which builds up a bidirectional wireless communication channel with deterministic properties in terms of throughput and latency over a strip of pervasive devices with short-range transmission capabilities. The system is synchronous and fault tolerant. With low cost and extremely simple devices, WiWi builds up a “wire-like” dielectric link, but its applications are not limited to end-to-end communications. For example, WiWi can be used to collect data from sensors along the path, thus acting as a virtual conveyor belt.
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