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Seasonal variance in P system models for metapopulations

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Progress in Natural Science:Materials International 2007年第4期17卷 392-400页

作者： Daniela Besozzi paolo Cazzaniga Dario Pescini Giancarlo Mauri Università degli Studi di Milano Dipartimento di Informatica e ComunicazioneVia Comelico 3920135 MilanoItaly Università degli Studi di Milano-Bicocca Dipartimento di InformaticaSistemistica e ComunicazioneVia Bicocca degli Arcimboldi 820126 MilanoItaly

Metapopulations are ecological models describing the interactions and the behavior of populations living in fragmented habitats. In this paper, metapopulations are modelled by means of dynamical probabilistic P systems, where additional structural features have been defined (e.g., a weighted graph associated with the membrane structure and the reduction of maximal parallelism). In particular, we investigate the influence of stochastic and periodic resource feeding processes, owing to seasonal variance, on emergent metapopulation dynamics.

关键词： P system metapopulation stochastic ecological model.

Towards a knowledge base to support global change policy goals

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International Journal of Digital Earth 2020年第2期13卷 188-216页

作者： Stefano Nativi Mattia Santoro Gregory Giuliani paolo Mazzetti European Commission–DG Joint Research Centre Ispra(VA)Italy National research Council of Italy–Institute on Atmospheric research pollution Sesto Fiorentino(FI)Italy University of Geneva Institute for Environmental SciencesGenevaSwitzerland UN Environment Science DivisionGRID-GenevaGenevaSwitzerland

In 2015,it was adopted the 2030 Agenda for Sustainable Development to end poverty,protect the planet and ensure that all people enjoy peace and *** year after,17 Sustainable Development Goals(SDGs)officially came into *** 2015,GEO(Group on Earth Observation)declared to support the implementation of *** GEO Global Earth Observation System of Systems(GEOSS)required a change of paradigm,moving from a data-centric approach to a more knowledge-driven *** this end,the GEO System-of-Systems(SoS)framework may refer to the well-known Data-Information-Knowledge-Wisdom(DIKW)*** the context of an Earth Observation(EO)SoS,a set of main elements are recognized as connecting links for generating knowledge from EO and non-EO data–*** and economic *** elements are:Essential Variables(EVs),Indicators and Indexes,Goals and *** generation and use requires the development of a SoS KB whose management process has evolved the GEOSS Software Ecosystem into a GEOSS Social *** includes:collect,formalize,publish,access,use,and update *** project analysed the knowledge necessary to recognize,formalize,access,and use *** analysis recognized GEOSS gaps providing recommendations on supporting global decision-making within and across different domains.

关键词： Knowledge base from data to knowledge essential variables SDGs GEOSS interoperability science big earth data

Contrast-enhanced ultrasound evaluation of hepatic microvascular changes in liver diseases

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World Journal of Gastroenterology 2012年第37期18卷 5225-5230页

作者： Francesco Ridolfi Teresa Abbattista paolo Busilacchi Eugenio Brunelli Division of Gastroen-terology Principe di Piemonte Hospital Division of Radiology Principe di Piemonte Hospital SIUMB School of Ultrasound of Ancona Principe di Piemonte Hospital

AIM： To assess if software assisted-contrast-enhanced ultrasonography （CEUS） provides reproducible perfu- sion parameters of hepatic parenchyma in patients af- fected by chronic liver disease. METHODS： Forty patients with chronic viral liver dis- ease, with （n = 20） or without （n = 20） cirrhosis, and 10 healthy subjects underwent CEUS and video re- cordings of each examination were then analysed with Esaote＇s Qontrast software. CEUS dedicated software Qontrast was used to determine peak （the maximum signal intensity）, time to peak （TTP）, region of blood value （RBV） proportional to the area under the time- intensity curve, mean transit time （MTT） measured in seconds and region of blood flow （RBF）. RESULTS： Qontrast-assisted CEUS parameters dis- played high inter-observer reproducibility （κ： coefficients of 0.87 for MTT and 0.90 TTP）. When the region of in-terest included a main hepatic vein, Qontrast-calculated TTP was significantly shorter in cirrhotic patients （vs non-cirrhotics and healthy subjects）（71.0 ± 11.3 s vs 82.4±15.6 s, 86.3±20.3 s, P 〈 0.05）. MTIs in the patients with liver cirrhosis were significantly shorter than those of controls （111.9±22.0 s vs 139.4±39.8 s, P 〈 0.05）, but there was no significant difference between the cirrhotic and non-cirrhotic groups （111.9± 22.0 s vs 110.3 ±14.6 s）. Peak enhancement in the patients with liver cirrhosis was also higher than that observed in controls （23.9± 5.9 vs 18.9±7.1, P = 0.05）. There were no significant intergroup differences in the RBVs and RBFs. CONCLUSION： Qontrast-assisted CEUS revealed re- producible differences in liver perfusion parameters during the development of hepatic fibrogenesis.

关键词： Contrast enhanced ultrasound Cirrhosis Hepatitis Liver perfusion Hepatic microcirculation

Is the exposure to liver transplantation worthwhile for trainees in liver surgery?

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Hepatobiliary Surgery and Nutrition 2022年第5期11卷 746-748页

作者： Matteo Donadon paolo Baroffio Department of Health Sciences Universitàdel Piemonte OrientaleNovaraItaly Department of General Surgery University Maggiore Hospital Della CaritàNovaraItaly

In the May 2022 issue of Annals of Surgery,Albert *** and colleagues reported interesting results on the effect of liver transplantation(LT)experience in performing complex liver resection(CLR)(1).By considering 1,452 LT and 222 CLR over a period of 24 years,performed in a worldwide recognized center for LT and liver surgery,they had 25.2%major complications and 6.3%mortality after ***,they found that the more experience in LT,the less risk of postoperative complications after *** also indicated the cutoff of 95 LT;meaning that at below such number,the rate of complications after CLR significantly increased(1).

关键词： surgery Surgery liver

Introspection on improper seismic retrofit of Basilica Santa Maria di Collemaggio after 2009 Italian earthquake

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Earthquake Engineering and Engineering Vibration 2011年第1期10卷 153-161页

作者： Gian paolo Cimellaro Andrei M. Reinhorn Alessandro De Stefano Department of Structural & Geotechnical Engineering (DISTR) Politecnico di Torino Department of Civil Structural & Environmental Engineering University at Buffalo The State University of New York

The 2009 L’Aquila, Italy earthquake highlighted the seismic vulnerability of historic masonry building structures due to improper ＂strengthening＂ retrofit work that has been done in the last 50 years. Italian seismic standards recommend the use of traditional reinforcement techniques such as replacing the original wooden roof structure with new reinforced concrete （RC） or steel elements, inserting RC tie-beams in the masonry and new RC floors, and using RC jacketing on the shear walls. The L’Aquila earthquake revealed the numerous limitations of these interventions, because they led to increased seismic forces （due to greater additional weight） and to deformation incompatibilities of the incorporated elements with the existing masonry walls. This paper provides a discussion of technical issues pertaining to the seismic retrofit of the Santa Maria di Collemaggio Basilica and in particular, the limitations of the last （2000） retrofit intervention. Considerable damage was caused to the church because of questionable actions and incorrect and improper technical choices.

关键词： seismic vulnerability historic masonry building wooden roof structure seismic retrofit L’Aquila earthquake

Synthesis of Fractional-order PI Controllers and Fractional-order Filters for Industrial Electrical Drives

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IEEE/CAA Journal of Automatica Sinica 2017年第1期4卷 58-69页

作者： paolo Lino Guido Maione Silvio Stasi Fabrizio Padula Antonio Visioli IEEE Dipartimento di Ingegneria Elettrica e dell’Informazione Politecnico di Bari Department of Mathematics and Statistics Curtin University Department of Mechanical and Industrial Engineering University of Brescia

This paper introduces an electrical drives control architecture combining a fractional-order controller and a setpoint pre-filter. The former is based on a fractional-order proportional-integral(PI) unit, with a non-integer order integral action, while the latter can be of integer or non-integer type. To satisfy robustness and dynamic performance specifications, the feedback controller is designed by a loop-shaping technique in the frequency domain. In particular, optimality of the feedback system is pursued to achieve input-output tracking. The setpoint pre-filter is designed by a dynamic inversion technique minimizing the difference between the ideal synthesized command signal(i.e., a smooth monotonic response) and the prefilter step response. Experimental tests validate the methodology and compare the performance of the proposed architecture with well-established control schemes that employ the classical PIbased symmetrical optimum method with a smoothing pre-filter.

关键词： Dynamic inversion electrical drives fractionalorder PI controller loop-shaping set-point pre-filter

Carbonaceous particles in the atmosphere and precipitation of the Nam Co region, central Tibet

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Journal of Environmental Sciences 2010年第11期22卷 1748-1756页

作者： Jing Ming Cunde Xiao Junying Sun Shichang Kang paolo Bonasoni State Key Laboratory of Cryospheric Sciences Cold and Arid Region Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China National Climate Center China Meteorological Administration Beijing 100081 China Laboratory for Atmospheric Chemistry Centre for Atmosphere Watch & Services China Meteorological Administration Beijing 100081 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Institute for Atmospheric Sciences and Climate CNR Bologna Italy

A continuous air and precipitation sampling for carbonaceous particles was conducted in a field observatory beside Nam Co, Central Tibetan Plateau during July of 2006 through January of 2007. Organic carbon （OC） was the dominant composition of the carbonaceous particles both in the atmosphere （1660 ng/m ^3 ） and precipitation （476 ng/g） in this area, while the average elemental carbon （BC） concentrations in the atmosphere and precipitation were only 82 ng/m 3 and 8 ng/g, respectively. Very high OC/BC ratio suggested local secondary organic carbon could be a dominant contribution to OC over the Nam Co region, while BC could be mainly originated from Southern Asia, as indicated by trajectory analysis and aerosol optical depth. Comparison between the BC concentrations measured in Lhasa, those at ＂Nepal Climate Observatory at Pyramid （NCO-P）＂ site on the southern slope of the Himalayas, and Nam Co suggested BC in the Nam Co region reflected a background with weak anthropogenic disturbances and the emissions from Lhasa might have little impact on the atmospheric environment here, while the pollutants from the Indo-Gangetic Basin of Southern Asia could be transported to the Nam Co region by both the summer monsoon and the westerly.

关键词： carbonaceous particle elemental carbon organic carbon Nam Co Tibetan Plateau

Synthesizing Service Composition Models on the Basis of Temporal Business Rules

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Journal of Computer Science & Technology 2008年第6期23卷 885-894页

作者：喻坚韩燕波韩军金岩 paolo Falcarin Maurizio Morisio Department of Automation and Information Politecnico di Torino School of Computer Science The University of Adelaide Grid and Service Computing Research Center Institute of Computing TechnologyChinese Academy of Sciences Faculty of ICT Swinburne University of Technology

Transformational approaches to generating design and implementation models from requirements can bring effectiveness and quality to software development. In this paper we present a framework and associated techniques to generate the process model of a service composition from a set of temporal business rules. Dedicated techniques including path- finding, branching structure identification and parallel structure identification are used for semi-automatically synthesizing the process model from the semantics-equivalent Finite State Automata of the rules. These process models naturally satisfy the prescribed behavioral constraints of the rules. With the domain knowledge encoded in the temporal business rules, an executable service composition program, e.g., a BPEL program, can be further generated from the process models. A running example in the e-business domain is used for illustrating our approach throughout this paper.

关键词： service composition composition synthesis behavioral model temporal patterns

Biomechanics in"Sino-Italian Joint"

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Acta Mechanica Sinica 2021年第2期37卷 169-172页

作者： Jizeng Wang Xiqiao Feng paolo Bisegna Antonio DeSimone Key Laboratory of Mechanics on Disaster and Environment in Western China The Ministry of EducationCollege of Civil Engineering and MechanicsLanzhou UniversityLanzhou 730000China Institute of Biomechanics and Medical Engineering Department of Engineering MechanicsTsinghua UniversityBeijing 100084China Department of Civil Engineering and Computer Science University of Rome Tor Vergata00133 RomeItaly Department of Excellence in Robotics and AI The Biorobotics InstituteScuola Superiore Sant'Anna56127 PisaItaly SISSA-Scuola Internazionale Superiore di Studi Avanzati 34136 TriesteItaly

As originally proposed by professor Alberto Corigliano of Politecnico di Milano and professor Jizeng Wang of Lanzhou University,the Chinese Society of Theoretical and Applied Mechanics(CSTAM)and the Italian Association for Theoretical and Applied Mechanics(AIMETA)signed a memorandum of understanding on strengthening exchange and cooperation between mechanics scholars of the two countries in January,2018,officially opening the activities of bilateral academic exchange.

关键词： Italian strengthening CSTA