125,647 research outputs found

    Naso Elettronico: funzionamento, applicazioni, problemi aperti

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    In questo lavoro di tesi l’obiettivo è stato quello di cercare di affrontare le seguenti problematiche: a) Cos’è l’odore; b) Come si può classificare l’odore; c) Quantificazione dell’odore: unità di misura; d) Come è possibile rilevare la presenza di odore: l’olfattometria; e) Aspetti normativi; f) Rilevazione strumentale dell’odore: il NASO ELETTRONICO; g) Un esempio di applicazione; h) Problemi aperti. Si è analizzato il funzionamento dal punto di vista elettronico dello strumento di misura Naso Elettronico. Si è descritto un esempio di utlizzo, campagna di monitoraggio ambientale, e si è cercato di affrontare le problematiche intrinseche a questo tipo di tecnologia fornendo nuovi trends di sviluppoope

    Significato morfopsicolgico dell'anatomia dell'occhio, naso, orecchio

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    The most important receptors, such as eye, nose, ear zere morpgho-psycologically analyzed...Sono stati analizzati morfopsicologicamente i più significativi recettori, quali occhio, naso orecchio..

    A coordination strategy for distributed multi-agent manufacturing systems

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    This paper proposes a distributed multi-agent approach for dynamic part routing in automated manufacturing systems. In particular, each part in the system is associated to an intelligent software agent that must select its next destination autonomously (i.e. ignoring the actions of the other agents) and in real time (i.e. at each time it completes an operation on a workstation). Differently from other existing approaches, we overcome the typical myopia of negotiation algorithms based on dispatching rules by allowing the part agents to take decisions not only about the imminent operation, but also for the subsequent ones. The anticipated decisions are transmitted to workstation agents, which are also designated to detect and resolve conflicts by modifying part agents' decisions. To describe the single agents and their interaction schemes in a formal way, we take advantage of DEVS discrete-event modelling tools, which also allow us to develop a detailed simulation platform for our multi-agent system. The simulation experiments obtained on a detailed model of a manufacturing system derived from the literature confirm the effectiveness of the proposed approach

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    “Evolutionary adaptation of dispatching agents in heterarchical manufacturing systems”

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    We propose a new approach to job flow adaptive operational control in advanced manufacturing systems. The major feature of the method is the distribution of the control tasks among completely autonomous intelligent agents. Namely, agents are implicitly coordinated by a nature-analogous adaptation mechanism, which continuously tunes the free parameters of the control law of each agent. The proposed approach is effective and reactive to severe disturbances and changes in the manufacturing environment. Simulation experiments illustrate the operational distributed approach and its response to fault

    Il naso e la nasologia russa in prospettiva europea

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    Il saggio analizza il racconto Nos (Il naso) di Nikolaj Gogol’ nel contesto della letteratura “nasologica” europea. Da una parte si indicano le origini di un tema così singolare come quello del naso, sviluppato da scrittori come Rabelais, John Donne, Sterne e Wilhelm Hauff nelle due direzioni dell’assenza del naso e della sua ipertrofia con le relative implicazioni sia simboliche che psicanalitiche. Dall’altra si cerca di dimostrare che Gogol’ si inserisce nella scia degli scrittori satirici che prendono di mira la teoria fisiognomica di Lavater, la quale ha uno dei suoi perni nelle fattezze del naso. Gogol’ è pertanto apparentato a Jean Paul e Georg Christoph Lichtenberg, con i quali condivide anche alcune peculiarità stilistiche. Infine si propone un’ipotesi sui mediatori, attraverso i quali Gogol’ potrebbe aver avuto conoscenza del dibattito europeo e degli scritti di autori che lo precedettero di alcuni anni

    “Evolutionary learning agents for shop floor control”

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    We describe a novel approach for shop poor control combining a distributed multi-agent structure and computational intelligence techniques. Shop floor activities are controlled by a network of autonomous agents. Each agent makes its decision with a fuzzy algorithm evaluating all the alternative actions with multiple criteria based on real time measures of shop's conditions. A tuning mechanism of the decision algorithm allows agents to adapt themselves to the time varying operating conditions of the manufacturing system. The adaptation process follows a reinforcement learning schema. New agents are periodically created to replace the old ones according to the following strategy: the better the peformance of an agent in its life cycle, the higher the probability that new agents will inherit its decision rules. Preliminary experiments on a detailed simulation model of flexible assembling systems show the potentialities of the approach and suggest further improvements
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