Suchergebnisse

Nowadays, more than ever, digital forensics activities are involved in any criminal, civil or military investigation and represent a fundamental tool to support cyber-security. Investigators use a variety of techniques and proprietary software forensic applications to examine the copy of digital devices, searching hidden, deleted, encrypted, or damaged files or folders. Any evidence found is carefully analysed and documented in a "finding report" in preparation for legal proceedings that involve discovery, depositions, or actual litigation. The aim is to discover and analyse patterns of fraudulent activities. In this work, a new methodology is proposed to support investigators during the analysis process, correlating evidences found through different forensic tools. The methodology was implemented through a system able to add semantic assertion to data generated by forensics tools during extraction processes. These assertions enable more effective access to relevant information and enhanced retrieval and reasoning capabilities.

World climate change and global warming increase are two urgent and strategic issues that national and international governments have to face, and different scenarios aimed to estimate the world energy demand were realized by several research centers: each scenario distinguishes itself by energy policies over the years, and the desirable one requires many efforts to keep the temperature increase below 2°C above pre-industrial level. These efforts imply challenging targets on both primary and final energy employment, and this thesis is focused on two of them: improvement of renewable energy exploitation and reduction of final energy consumption, and energy conversion systems able to efficiently achieve these targets are cogenerated distributed plants, in particular the small scale. Nevertheless, in order to achieve significant primary energy saving, combined heat and power plants need to be designed with a substantial thermal power exploitation, as well as the design need reliable and congruent system models to evaluate the plant performances. The methodology carried out in this doctorate course was focused on the analysis of these topics and it was made by two main elements, an energy conversion system model, which describes the peculiar studied case, and a multi-variable multi-objective optimization algorithm, which depends on the specific application. In particular, two different applications of the methodology were realized, one aimed at designing the more efficient energy interaction between energy system and user and one aimed at validate thermodynamic models and experimental data congruence; the first application concerned combined heat and power plants based on internal combustion engine and gas turbine, while the second application was performed on micro gas turbines and pyro-gasification biomass plant. The methodology showed to be a potentially powerful tool about conversion energy systems analysis, due to the relevant primary energy saving related to designed cogenerated power plant and to the analysis of reliability performed on mathematical models of energy conversion systems.

Il profondo cambiamento dello scenario economico ed organizzativo che ha interessato il Sistema Sanitario Nazionale negli ultimi anni, pone delle nuove continue sfide a tutti gli operatori del settore. Le sfide più importanti che i sistemi sanitari pubblici e privati devono affrontare, data la limitatezza delle risorse, sono: ✓ Assicurare un'assistenza di qualità alla popolazione assistita; ✓ Preservare la sostenibilità economica del sistema; ✓ Razionalizzare in maniera appropriata le risorse disponibili; "Fare di più con meno" è ormai l'imperativo che, in tutti i settori economici, politici e sociali, impone la ricerca di nuove soluzioni sempre più efficienti ed efficaci. Negli anni successivi questo problema sarà sempre di maggior peso per i manager sanitari dato il continuo invecchiamento della popolazione, l'aumento dell'aspettativa di vita e il rapido sviluppo delle tecnologie sanitarie. Per far fronte a queste necessità, al fine di offrire alla popolazione assistita i migliori servizi sanitari, è fondamentale accrescere il focus su tre pilastri del processo decisionale: innovazione, appropriatezza ed efficienza. In questo ambito viene in aiuto un approccio manageriale sviluppato inizialmente per la grossa industria e che si è diffuso a partire dal ventunesimi secolo anche nell'ambito della sanità (Healthcare). Tale metodologia prende il nome di Lean Thinking, una tecnica che ha l'obiettivo di ridurre gli sprechi e la sovrapposizione di attività, mantenendo come obiettivi cardine: 1. Il miglioramento il servizio offerto 2. La diminuzione della complessità dei servizi, 3. L'aumento del grado di soddisfazione (valore percepito) da parte dell'utente (esterno o interno) che accede ad un servizio o prestazione 4. Coinvolgimento di tutti i professionisti al miglioramento continuo e alla ottimizzazione dei processi e attività. Ciò comporta un profondo cambiamento a vari livelli: organizzativo, operativo, strategico e culturale. L'obiettivo della presente tesi è di sperimentare la metodologia Lean applicata al settore urgenze del laboratorio analisi, andando a studiare i percorsi dei campioni nei vari settori dell'area Core. Gli obiettivi che si è prefissati di raggiungere sono stati i seguenti: 1. Miglioramento dell'organizzazione del settore urgenze rendendo l'attività lavorativa snella, supportando il personale di laboratorio nello svolgimento delle proprie attività; 2. Riduzione dei tempi morti nell'area preanalitica che ritardano l'attività della fase analitica; 3. Razionalizzazione dei processi intesi come chilometri effettuati dal personale giornalmente;

In the last decades, much work have been done to deconstruct the mechanisms of government in Early Medieval Europe. In that task, the interpretation of the settlement of disputes and royal/imperial diplomas as the basis of the central government strategies in local spheres has been underlined by recent historiography. Following this methodology, the aim of this article is, thus, to analyze the mechanisms of governance in the March of Tuscany in a time characterized by political fluidity, focusing in the role played by the kings and lay and ecclesiastical aristocracies in the construction of complex political systems.

Engine development has nowadays to deal with a stringent legislation on the pollutant emissions, and a constant attempt to reduce the fuel consumption, as required from the marketing, the governments and the customers. The engine development is high complicated process and CFD simulations play a significant role. They are used at various stages of the design process with different purposes. The goal of this work is to develop a procedure to simulate the mixture formation and wall impingement in GDI engines. In particular, the work is focused on the air motion in-cylinder, on the injection phase, until the mixture formation before the ignition and the research of a correlation between the wall impingement and soot measurement. The ideal workflow is to consider also combustion simulation to relate soot formation estimation with experimental data of emission. The simulation of combustion in gasoline engines is nowadays still in the research phase, and it is generally not used for the engine design. Although it constitutes an interesting research topic, it requires a computation and experimental effort far beyond the current state of the art in the daily engine development process, and it is not covered in this work. On the other end the experimental procedure to measure liquid film formation in engines during the injection process is highly complicated and require facilities not available for this work. All these limitation from simulation and experiments point of view lead us to the decision of correlating wall wet formation of simulation with PN measurement from experiments. The methodology developed is divided in three main simulation: cold flow simulation, injection simulation and wall wet analysis. In the first part the engine flow is validated focusing the attention on velocity magnitude and turbulent kinetic energy fields. In parallel the injection model is calibrated and validate in the spray box, using as target the experimental spray penetration length and droplets size distribution. Once the first 2 simulation are validate, the injection model is implemented in the engine simulation to evaluate the liquid film formation. If a correlation between the in-cylinder wet surface and soot measurement is found, in the future engine development process will be possible to use CFD to estimate liquid film and from that have a prediction of soot formation. This methodology allows to save time and money that always represents a critical point in the engine development.

Malgrado la vicenda trovi scarso riscontro sui principali canali di comunicazione occidentali la crisi ucraina rappresenta ormai da anni un pericoloso conflitto a ridosso dei confini orientali del continente, foriero di gravi rischi per il processo di integrazione europea. Per via della propria posizione geografica l'Ucraina rappresenta il territorio di passaggio principale per i rifornimenti di gas naturale provenienti dalla Russia e diretti al continente europeo: questo traffico, fondamentale per le economie della Federazione russa e dell'Unione Europea, contribuisce a rendere il conflitto di particolare criticità strategica. Per comprendere la complessità delle tensioni è utile indagare la situazione territoriale del Paese attraverso indicatori socio-economici e politici georeferenziati in una cartografia GIS, al fine di dare evidenza agli elementi fondamentali alla base della situazione di un territorio di grande complessità. In quest'ottica la cartografia offre un contributo insostituibile: attraverso il confronto e la sovrapposizione delle rappresentazioni cartografiche relative alla realtà socioeconomica e politica del territorio è possibile rappresentare una situazione complessa e disomogenea e far emergere gli elementi di criticità. A partire dal caso della crisi ucraina, e alla luce della crescente importanza della place evidence in ambito europeo, il contributo intende così fornire elementi di analisi circa il ruolo della cartografia nell'indagine geopolitica al fine di conservare e valorizzare gli elementi geografici di questa disciplina. ; Despite low attention on main media channels, Ukrainian crisis is a dangerous conflict laying at the borders of European Union, bringing serious risks in European integration process. Due to geographic position, Ukraine is the main passage territory in natural gas supplying from Russia to Europe: this traffic is essential for economic systems both of Russian Federation and for European Union. For this reason, the Ukrainian conflict has a particular strategic centrality. In order to understand the complexity of the match, it is useful to study territorial situation of the country through socio-economic and political indicators, geo-referred in a GIS, in order to provide place evidence to main elements on the basis of situation of a very complex territory. In this sense, cartography is an irreplaceable tool: through comparison and overlap of cartographic representations of territorial data, it is possible to represent a complex situation to highlight critical issues. Starting from Ukrainian case study, and in the light of growing importance of place evidence in European context, the article aims at giving some elements in analysis about the role of cartography within geopolitical research, in order to preserve and valorise geographic elements of this discipline.

The sovereign debt crisis in the Eurozone began with the global economic recession that started in 2008 in the USA, caused by a massive melt down in financial markets. After the crash of 2008, the sovereign debt increased for two main reasons. The first reason was because governments assumed private debt (primarily bank debt). The second reason derived from the automatic stabilizers set in motion by the recession-induced decline in government revenues. In this scenario, there was a drastic increase in the interest rate of government bonds, especially for PIIGS countries (Portugal, Ireland, Italy, Greece, Spain). However it seems very difficult to explain this enormous increase exclusively through the theory of speculative attacks triggered by the worsening of fundamentals, especially if inconsistent macroeconomic policies were not in place. The main goal of this work is to indagate the determinants of the spread increase taking into account the fundamentals deterioration and the self-fulfilling speculative attack on euro currency.

Almost a decade has passed since the outbreak of the economic crisis; from its original nucleus, its effects have quickly affected the social and geopolitical fields. Such wide impact and its complex implications make the crisis an object susceptible of multiple readings. The particular aim of the studies collected in this volume is to explore the impact of the crisis on law, culture and society, in order to test the depth of the problem, by comparing the analytical perspectives obtainable from legal and human sciences. The book focuses on three main issues: the crisis as a social object, in order to consider the crisis in terms of its attributing force; the problem of democracy, which is becoming an increasingly central question now, as the changes imposed by the crisis have begun to settle down; the interdisciplinary challenge that, in time of crisis, questions paradigms of knowledge, competences and methods, in order to enable an heuristic dialogue between human, social and legal sciences. ; Introduction / Massimo Meccarelli (pp. 9-12). -- The Crisis as a Social Object : -- Narrating the Crisis: Fictions of Finance in Contemporary British Novels / Silvana Colella (pp. 15-37). -- Social Rights in Crisis: Any Role for the Court of Justice of the EU? / Francesco Costamagna (pp. 39-64). -- Ripensare la nazione ottocentesca. Vecchi e nuovi paradigmi tra storia, diritto e globalità / Eliana Augusti (pp. 65-97). -- Ma cos'è questa crisi? / Carla Canullo (pp. 99-113). -- The Problem of Democracy : -- Defending Collective Sociality: The Oresteia at Shakespeare's Globe / Louise Owen (pp. 117-131). -- Representation of the Crisis vs Representative Democracy in Italy / Roberta Calvano (pp. 133-148). -- The Unbearable Lightness of the Freedom of Movement: An Analysis of the Relationship Between Brexit and Inmigration / Lucia Barbone, Erik Longo (pp.149-174). -- Représentation, perception de la crise et modification de la «sécurité sociale». Entre prédiction et anticipation, que signifie agir das un monde incertain? / Jean-Philipe Pierron (pp. 175-188). -- The Interdisciplinary Challenge : -- Intercultural Categories of Thought in Times of Crisis: The Challenge of Inter/Multi-discipinary Research / Flavia Stara (pp. 191-198). -- An Interdisciplinary Approach to International Law? Some Cursory Remarks / Paolo Palchetti (pp. 199-208). -- Rights in Times of Crisis: An Interdisciplinary Issue for Legal Studies / Massimo Meccarelli (pp. 209-219). -- Contributors (pp. 221-224).