Area Scienze chimiche, fisiche, matematiche: Recent submissions
Items 121-140 di 293
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The role of randomness in avalanche statistics and synchronization of spring-block models
(Universita degli studi di Salerno, 2017-07-14)Self-organized criticality is a collective behaviour whose main feature is that the dynamical system we are considering moves towards its critical point, without any tuning of adjustable external parameters. The most famous ... -
DIST-M: script collaborativi computer-based per mediare l'argomentazione in matematica
(Universita degli studi di Salerno, 2017-05-05)Questa tesi è parte di una ricerca che mira a comprendere se sia possibile utilizzare, nell'ambito dell'educazione matematica, una piattaforma di e-learning per realizzare un insegnamento basato sulla mediazione e ... -
Discutere di Matematica: confronto tra il caso online e in presenza
(Universita degli studi di Salerno, 2017-05-09)My doctoral thesis concerns research in mathematics education, with particular reference to the use of the social networks. In this respect, I am interested in online discussion in mathematics and the comparison between ... -
Many valued logics: interpretations, representations and applications
(Universita degli studi di Salerno, 2017-05-10)This thesis, as the research activity of the author, is devoted to establish new connections and to strengthen well-established relations between different branches of mathematics, via logic tools. Two main many valued ... -
Crystal growth and physical properties of helimagnetic oxides
(Universita degli studi di Salerno, 2017-07-13)This work is focused on two helimagnetic materials: Ba2CuGe2O7 and Cu3Nb2O8. Recent studies report a number of interesting anisotropic proper- ties [1, 2, 3]. Ba2CuGe2O7 melilite oxide shows a complex magnetic behaviour, ... -
Seismic tomography of Italy (with special regard to Southern Tyrrhenian)
(Universita degli studi di Salerno, 2017-07-14)The topic of my PhD thesis is a seismic tomography which has as object of investigation Italy, particularly Southern Italy and Southern Tyrrhenian. This tomography has been obtained by means of inversion of teleseismic ... -
Graphene and carbon nanotubes in transistors, diodes and field emission devices
(Universita degli studi di Salerno, 2017-03-22)Since their discovery, graphene and carbon nanotubes have been playing an important role in nanoscience and nanotechnology thanks to their extraordinary physical and chemical properties. With silicon-based electronics ... -
New Insights on cryptographic hierarchical access control: models, schemes and analysis
(Universita degli studi di Salerno, 2016-05-24)Nowadays the current network-centric world has given rise to several security concerns regarding the access control management, which en- sures that only authorized users are given access to certain resources or tasks. ... -
Carbon-based nanomaterials
(Universita degli studi di Salerno, 2017-02-27)New layered carbon-based materials were prepared and exhaustively characterized exploiting different characterization techniques, such as thermogravimetry (TGA), differential thermal calorimetry (DSC), Fourier transform ... -
A study on iron-chalcogenides superconductors: from samples preparation to physical properties
(Universita degli studi di Salerno, 2017-03-14)In the scientific community there is a great interest to explore new superconducting materials suitable for high field applications in order to meet the needs of industrial claims. In this framework, newly discovered ... -
Augmenting the Internet with a Trust Ecosystem for inter pares interactions
(Universita degli studi di Salerno, 2016-05-23)The Internet is an extraordinary communications medium but it is not free from problems that are limiting its potential further development. In this dissertation we analyze and address some of the issues that make it an ... -
Fabrication of graphene based devices and study of their electrical and optical properties
(Universita degli studi di Salerno, 2013-05-13)This work is dedicated to investigate the unique and excellent electrical and optical properties of graphene, through the fabrication and experimental study of several graphene based devices. Particular attention is paid ... -
Novel macrocyclic systems in asymmetric phase-transfer catalysis
(Universita degli studi di Salerno, 2017-02-27)In the great realm of organic synthesis, phase-transfer catalysis (PTC) is a well recognized methodology which plays a key role both in industry and academia research. This process involves reactions that take place between ... -
Synthesis of recursive state machines from libraries of game modules
(Universita degli studi di Salerno, 2016-05-18)This thesis is focused on synthesis. In formal veri cation synthesis can be referred to the controller synthesis and the system synthesis. This work combines both this area of research. First we focus on synthesizing ... -
The Role of Distributed Computing in Big Data Science: Case Studies in Forensics and Bioinformatics
(Universita degli studi di Salerno, 2016-05-24)The era of Big Data is leading the generation of large amounts of data, which require storage and analysis capabilities that can be only ad- dressed by distributed computing systems. To facilitate large-scale distributed ... -
MV-algebras, Grothendieck toposes and applications
(Universita degli studi di Salerno, 2016-05-31)This thesis is a contribution to the research program ‘toposes as bridges’ introduced in [12], which aims at developing the unifying potential of the notion of Grothendieck topos as a means for relating different ... -
Models and Algorithms for Some Covering Problems on Graphs
(Universita degli studi di Salerno, 2016-05-12)Several real-life problems as well as problems of theoretical importance within the field of Operations Research are combinatorial in nature. Combinatorial Optimization deals with decision-making problems defined on a ... -
Environmental and catalytic applications of alkaline oxides
(Universita degli studi di Salerno, 2015-04-20)Alkaline oxides are widely used in industrial processes involving removal of gaseous compounds as unwanted by-products such as CO2, hydrogen sulphide and nitric oxides. Traditional processes generally involve Ca-based ... -
Superconductivity in S/F hybrids: a Scanning Probe Microscopy study of orbital interaction
(Universita degli studi di Salerno, 2016-04-14)In the framework of the Ginzburg-Landau (G-L) theory [1], conventional superconductors are classified in type I and type II, based on the value the G-L parameter... [edited by author] -
Cardiovascular System: Modelling and Optimization
(Universita degli studi di Salerno, 2016-02-24)A conservation law is a partial di_erential equation, in which the variable is a quantity which remains constant in time, that is it cannot be created and destroyed. Thanks to the conservation laws it is possible to de_ne ...