1,721,036 research outputs found
Active Shielding Design in a Full 3D Space of Indoor MV/LV Substations Using Algorithm Optimization
No full textOptimization of cellular base stations distribution in territory with urban and environmental restrictions by means of genetic algorithms
No full textIntegrated Security Systems for Hazard Prevention, management and Control in the Italian High Speed Train Line
No full textProceedings con Refere
L'inquinamento elettromagnetico - Fondamenti tecnici e principi normativi
No full textCollana: I manuali del progettist
Reliability analysis and assessment of the explosion risk in a hybrid collector
No full textDust removal from a gas stream is a common problem in many industrial processes (e.g. power, cement, steel plants, etc.). In the last decades, plant managers more and more often have had to face the necessity of improving de-dusting systems in order to meet more stringent law requirements, inspired by the principle of the “maximum safety technologically feasible”, but also pushed by the increased penetration of environmental issues into public opinion, and its meaning in terms of company image. Budgets for these improvements play a role in a general asset management strategy: de-dusting, being often an operation having low influence on production performances, is seen more as a “necessary cost” than a profit generator. The trend for companies, especially in the actual economical scenario, is to reuse existing de-dusting plants, enhancing their efficiencies rather than install new plants that would involve costs for the decommissioning of obsolete equipment. The obvious economic benefits of retrofits are counterbalanced by technical disadvantages. In particular, a systematic assessment of safety issues is required, not limited to the safety-oriented design of new machines, but extended in the evaluation of the impact that changes in process conditions (induced by the new equipment) can have on the existing ones.
In this work, explosion problems in the de-dusting section of a cement plant have been considered. Particularly, using fault tree analysis, it has been evaluated the changing in the overall risk (considering one year of mission time) of explosion referring to a hybrid-like collector realised by introducing a Fabric Filter (FF) downstream with respect to an Electrostatic Precipitator (ESP). Results have shown that a chain of failures in the FF section may affect relevantly the risk of explosions occurrence in the collector leading to the unavoidable need for the introduction of mitigation actions into the system
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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