Search results for "Operation"
showing 10 items of 2969 documents
Three Hours Ahead Prevision of SO2 Pollutant Concentration Using an Elman Neural based Forecaster
2008
Abstract Indoor air quality near the industrial site is tightly joined to pollutant concentration level, since outdoor pollution heavily influences air quality and, consequently, inhabitants health. A pollution management system is essential for health protection. Automatic air quality management systems have became an important research issue with strong implications for inhabitants’ health. In this paper an automatic forecaster based on neural networks for SO 2 concentration prevision is proposed. The analyzed area covers different small towns near the industrial site of Priolo, in the south of the world. Among these towns, Melilli was the first town in Italy that was evacuated for high l…
Ewolucja roli mniejszości niemieckiej w Polsce oraz Polonii w Niemczech w stosunkach polsko-niemieckich pod koniec XX wieku i na początku XXI wieku
2016
Both German minority in Poland and Polonia in Germany constitute undoubtedly – along with the history, geographical location and common membership of the Republic of Poland’s and German Federal Republic’s to EU and NATO – one of more important determinants of relations between both states. As to the issue of execution of rights of Germans in Poland and Polonia in German the breakthrough took place as a result of signing Treaty on good neighborhood and friendly cooperation on 17.06.1991. On both sides though there are the charges formulated about the lack of full execution of the Treaty provisions. The subject of controversy is, on the one hand, their status – inequality of terminology used …
A Qualitative Analysis of Secondary Mechanisms in SEC of Polymers Through the Mean Value of the Viscosimetric Exponent
2001
Abstract Size exclusion chromatography (SEC) universal calibration curves for poly(dimethylsiloxane), polybutadiene and poly(2-vinylpyridine) samples have been obtained in columns packed with cross-linked polystyrene gel using cyclohexane, toluene, benzene, dioxane and tetrahydrofuran as eluents at 25°C. The eluents exhibit different thermodynamic quality for the polymeric solutes and for the gel matrix which is reflected in the values of their Mark-Houwink-Sakurada exponents a. The plots of log(hydrodynamic volume) versus retention volume for the polymeric solutes in different eluents are displaced to higher retention volumes than that of THF-polybutadiene (ideal SEC), evidencing the exist…
Tailoring PLLA scaffolds for tissue engineering applications: Morphologies for 2D and 3D cell cultures
2009
PLLA scaffold suitable for dermis regeneration were realized by Thermally Induced Phase Separation (TIPS) starting from a ternary solution PLLA/dioxane/water. The reconstruction of a complex tissues as the dermis implies the use of different cellular types (coculture), with different growth behaviour (2D vs. 3D). The scaffolds present an homogeneous porous surface to allow the keratinocytes 2D growth and a porous internal structure for the fibroblasts 3D growth. Our results show that the porosity of the surface can be tuned by changing the chemical nature of the sample holder (aluminium, teflon, polypropylene). A large variety of morphologies, in terms of average pore size and interconnecti…
Effectiveness of organoclays as compatibilizers for multiphase polymer blends - A sustainable route for the mechanical recycling of co-mingled plasti…
2014
We prepare and characterize multiphase systems in which small amounts of recycled polymer, namely polyethylene terephtalate (PET) ground from waste bottles, are dispersed in a co-continuous blend of high-density polyethylene (HDPE) and polypropylene (PP). Some of such ternary systems are also filled with plate-like clay nanoparticles with different polarities, in order to assess their influence on the morphology and mechanical behaviour of the blends. On the basis of preliminary wettability considerations and inspections by means of scanning electron microscopy (SEM), the PET is found to preferentially locate within the PP phase. Such a positioning is desirable in order to minimize the pres…
Porti e automazione: spunti in materia di responsabilità delle imprese di sbarco
2019
Lo studio si incentra sull'automazione delle operazioni portuali di imbarco e di sbarco, con particolare riferimento all'incidenza della tecnologia sul sistema di responsabilità degli attori del trasporto marittimo. Sarà trattata la normativa portuale, la governance, il sistema di protezione sociale dei lavoratori portuali e il regime giuridico dei terminal operator. La relazione tra attività totalmente automatizzata e infrastrutture marittime è analizzata nel contesto del diritto internazionale marittimo. The article focuses on the automatization of loading, stowing and unloading ports operations, from the point of view of the impact of the technologies on the system of liabilities of the …
Social Harmony or a Happy Society
2021
In this paper, I set out to prove that once we correctly identify human nature and organize our world according to the principle of cooperation, we can arrive at a world of social harmony. We can then engage in conscious human evolution, aiming at moral and intellectual perfection. Hence, we can arrive at evolutionity, a new evolutionary epoch which would replace the current conflicting and disharmonious times of postmodernity. The current world disharmony, which can be observed especially in the field of politics and economics, is largely related to the erroneous modern Western philosophical assertions identifying the human being with an individual moved by desires and the will to power, a…
Green Data Centres integration in smart grids: New frontiers for ancillary service provision
2017
Abstract The paper presents a study, conceived within the GEYSER FP7 co-funded European research project, on the ancillary services that Green Data Centres (GDCs) can provide, focusing, in particular, on spinning reserve. More in detail, the main contribution of the paper is to show how GDCs can be involved in the secondary frequency regulation process of a smart distribution grid, for contrasting the disturbing effects of unexpected variation of the energy production. With this aim, a real data centre, owned by Engineering S.p.A., is simulated as connected to the Medium Voltage IEEE 14-bus test grid where some RES-based generators are supposed to exist. Simulations are carried out in order…
A distributed minimum losses optimal power flow for islanded microgrids
2017
Abstract In this work, the minimum losses optimal power dispatch problem for islanded microgrids with distributed energy resources (DER) is solved by means of a distributed heuristic approach. Optimal power management is performed almost in real time, with a predefined schedule, i.e. every 5 min, and the solution is applied to generators when the current operating solution violates voltage or current constraints or when the current configuration produces too large power losses. The operating point of both inverter-interfaced generation units as well as rotating production systems can be modified simply using local information. The latter are voltage measurements and power injections or load…
Pragmatism in Decision Support System Research
2018
Decision making on relief distribution is a complex multidisciplinary task in humanitarian logistics. It incorporates decision makers from different but related problem areas. The failure to perform assigned decision-making tasks in any area makes the entire system unstable and delays the relief distribution process. An organized, well-planned, and practical decision support system (DSS) can assist practitioners in making rapid decisions on delivering relief items. Hence, DSS researchers in humanitarian logistics require rigorous thinking, close and critical analysis, and the identification of challenges to conduct research or validate the generated knowledge properly. To perform such compl…