Search results for " Dispersion"
showing 10 items of 280 documents
Consumers' privacy, selling of information, and security in digital markets
2019
La era digital se caracteriza por la gran producción de datos (algunos de ellos de naturaleza privada) a gran escala. La vulnerabilidad y la exposición está ocurriendo a un ritmo sin precedentes, produciendo grandes incentivos económicos para los propietarios de estos datos. Sin embargo, los proveedores de dichos datos, que a menudo son consumidores de contenido gratuito en plataformas digitales, están comenzando a desarrollar problemas de privacidad y, por lo tanto, conducen a la consiguiente reducción de la confianza en los mercados digitales. El objetivo principal de esta tesis es analizar la privacidad desde una perspectiva informativa y fuente de ineficiencias en el mercado. Además, la…
Diffusione del punteruolo rosso delle palme a Palermo a tre anni dalla sua introduzione.
2009
L’orientamento nel primo biennio di un istituto professionale
2017
L’intervento mirava a verificare se, integrando l’azione della scuola, che è un’agenzia educativa formale, con quella di agenzie formative non formali che operano nello stesso territorio dell’Istituto professionale coinvolto nella ricerca, si abbassava il tasso di dispersione scolastica nel primo biennio. Al termine delle nuove iniziative educative realizzate, dal confronto con i risultati degli anni precedenti, si è notato un aumento dei voti in matematica e in lingua italiana, una diminuzione delle assenze e dei ritardi all’ingresso e un aumento dei contatti tra genitori e insegnanti. The intervention was aimed to verify whether the integration of school action (being school a formal educ…
Autosabotaggio e procrastinazione: strategie di prevenzione del sentire mafioso
2017
Nell’analisi della dispersione scolastica il fenomeno della procrastination è stato spesso sottovalutato. La nostra ricerca ha correlato i processi di selfhandicapping con quelli connessi all’abbandono del percorso di studio. La procrastination è stata studiata come processo di co-stante rinvio degli impegni scolastici e delle occasioni di recupero. Lo studio è stato condotto su di un gruppo di 956 studenti delle scuole superiori, distin-guendo due diverse aree: quella delle strategie di studio e di coping nella gestione delle prove scolastiche; quella delle relazioni sociali e delle priorità in esse. Queste variabili sono state correlate con il locus of control e con le strategie di self e…
Sports teams as complex adaptive systems: manipulating player numbers shapes behaviours during football small-sided games
2016
Small-sided and conditioned games (SSCGs) in sport have been modelled as complex adaptive systems. Research has shown that the relative space per player (RSP) formulated in SSCGs can impact on emergent tactical behaviours. In this study we adopted a systems orientation to analyse how different RSP values, obtained through manipulations of player numbers, influenced four measures of interpersonal coordination observed during performance in SSCGs. For this purpose we calculated positional data (GPS 15 Hz) from ten U-15 football players performing in three SSCGs varying in player numbers (3v3, 4v4 and 5v5). Key measures of SSCG system behaviours included values of (1) players’ dispersion, (2) …
Oil solubilization in copolymer and copolymer covered laponite aqueous dispersion
2007
Chasing Weak Forces: Hierarchically Assembled Helicates as a Probe for the Evaluation of the Energetics of Weak Interactions.
2017
London dispersion forces are the weakest interactions between molecules. Because of this, their influence on chemical processes is often low, but can definitely not be ignored, and even becomes important in cases of molecules with large contact surfaces. Hierarchically assembled dinuclear titanium(IV) helicates represent a rare example in which the direct observation of London dispersion forces is possible in solution even in the presence of strong cohesive solvent effects. Hereby, the dispersion forces do not unlimitedly support the formation of the dimeric complexes. Although they have some favorable enthalpic contribution to the dimerization of the monomeric complex units, large flexible…
A one-pot method to enhance dissolution rate of low solubility drug molecules using dispersion polymerization in supercritical carbon dioxide
2009
Tube transport of water vapor with condensation and desorption
2013
Attenuation and delay of active tracers in tube transport is an important current problem, but its full explanation is still lacking. To this end a model is introduced, where part of a tracer undergoes condensation and evaporation, treated as a diffusion-type process, in addition to Taylor dispersion. Condensation of water was verified by high-speed imaging, and the model solution fitted the breakthrough curves of laboratory measurements with pulses of water vapor of varying relative humidity. The model provides a transfer function whose performance was verified against field measurements. peerReviewed
Riconfigurare i territori metroplitani. Forme di urbanizzazione e fenomeni di pressione insediativa sui sistemi di interesse naturale in Sicilia
2018
The consumption of the soil due to urbanization it is a phenomena already for many years under observations, but of which only the scientific environment has noticed the elevated environmental impact progress. From a disciplinary point of view, is possible to identify a line of research focusing on the analysis and identification of new morphologies of urbanization and on the interaction among different settlement patterns coexisting in a specific context. This reading complements with the scientific production about the forms of settlement pressure on environmental systems, producing change and deterioration on natural ecosystems and loss of biodiversity. A necessary reference for this lin…