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Stability of Nonlinear differential-Algebraic Systems Via Additive Identity

IEEE/CAA Journal of Automatica Sinica 2020年第4期7卷 929-941页

作者： pierluigi di franco Giordano Scarciotti Alessandro Astolfi the Electrical and Electronic Engineering Department Imperial College LondonLondon SW72AZUK

The stability analysis for nonlinear differentialalgebraic systems is addressed using tools from classical control theory. Sufficient stability conditions relying on matrix inequalities are established via Lyapunov direct Method. In addition, a novel interpretation of differential-algebraic systems as feedback interconnection of a purely differential system and an algebraic system allows reducing the stability analysis to a smallgain-like condition. The study of stability properties for constrained mechanical systems, for a class of Lipschitz differential-algebraic systems and for an academic example is used to illustrate the theory.

关键词： differential-algebraic systems Lyapunov method small-gain theorem stability analysis

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Transperineal laser ablation of the prostate as a treatment for benign prostatic hyperplasia and prostate cancer: The results of a Delphi consensus project

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Asian Journal of Urology 2024年第2期11卷 271-279页

作者： Andrea Cocci Marta Pezzoli Fernando Bianco franco Blefari pierluigi Bove francois Cornud Gaetano De Rienzo Paolo Destefanis Danilo di Trapani Alessandro Giacobbe Luca Giovanessi Antonino Laganà Giovanni Lughezzani Guglielmo Manenti Gianluca Muto Gianluigi Patelli Novello Pinzi Stefano Regusci Giorgio I.Russo Juan I.M.Salamanca Matteo Salvi Luigi Silvestri Fabrizio Verweij Eric Walser Riccardo GBertolo Valerio Iacovelli Alessandro Bertaccini Debora Marchiori Hugo Davila Pasquale ditonno Paolo Gontero Gennaro Iapicca Theo M De Reijke Vito Ricapito Pierluca Pellegrini Andrea Minervini Sergio Serni Francesco Sessa Department of Urology Careggi HospitalUniversity of FlorenceFlorenceItaly Urology Section University of FlorenceFlorenceItaly Urological Research Network MiamiFLUSA Urology Section Prato HospitalPratoItaly Torvergata Oncoscience Research Centre of Excellence TORDepartment of Experimental MedicineUniversity of Rome Tor VergataRomeItaly Department of Urology San Carlo di Nancy HospitalRomeItaly Department of Radiology Hôpital CochinParis Descartes UniversityParisFrance Urology and Andrology Unit II Department of Emergency and Organ TransplantationUniversity of BariBariItaly Unit of Urology Cittàdella Salute e della Scienza HospitalUniversity of TurinTurinItaly Urology Unit Buccheri La Ferla Fatebenefratelli HospitalPalermoItaly Department of Urology Humanitas Gradenigo HospitalTurinItaly Urology Unit Surgical DepartmentFondazione Poliambulanza Istituto OspedalieroBresciaItaly Departement of Urology “S.Giovanni Evangelista”HospitalTivoliItaly Humanitas Clinical and Research CentereIRCCS Department of UrologyRozzanoItaly Department of Biomedical Sciences Humanitas UniversityPieve EmanueleItaly Department of Biomedicine and Prevention University of Rome“Tor Vergata”RomeItaly Department of diagnostic Imaging and Interventional Radiology University of Rome“Tor Vergata”RomeItaly Department of Interventional Radiology Pesenti-Fenaroli Hospital-ASST Bergamo EstAlzano LombardoItaly Department of Urology University of SienaSienaItaly Swiss International Prostate Center GenevaSwitzerland Clinique Générale Beaulieu GenevaSwitzerland Department of Urology University of CataniaItaly Department of Urology Puerta de Hierro-Majadahonda University HospitalMadridSpain Lyx Institute of Urology Universidad Francisco de VitoriaMadridSpain Department of Medico-Surgical Sciences and Biotechnologies Sapienza University of RomeFaculty of Pharmacy and MedicineUrology Unit ICOTLatinaItaly Department of Urology European Institute of Oncology(IEO)IRCCSMilanItaly Department of Radiology D

Objective: To evaluate transperineal laser ablation (TPLA) with Echolaser® (Echolaser® TPLA, Elesta S.p.A., Calenzano, Italy) as a treatment for benign prostatic hyperplasia (BPH) and prostate cancer (PCa) using the Delphi consensus method.Methods: Italian and international experts on BPH and PCa participated in a collaborative consensus project. During two rounds, they expressed their opinions on Echolaser® TPLA for the treatment of BPH and PCa answering online questionnaires on indications, methodology, and potential complications of this technology. Level of agreement or disagreement to reach consensus was set at 75%. If the consensus was not achieved, questions were modified after each round. A final round was performed during an online meeting, in which results were discussed and finalized.Results: Thirty-two out of forty invited experts participated and consensus was reached on all topics. Agreement was achieved on recommending Echolaser® TPLA as a treatment of BPH in patients with ample range of prostate volume, from 80 mL (80%), comorbidities (100%), antiplatelet or anticoagulant treatment (96%), indwelling catheter (77%), and strong will of preserving ejaculatory function (100%). Majority of respondents agreed that Echolaser® TPLA is a potential option for the treatment of localized PCa (78%) and recommended it for low-risk PCa (90%). During the final round, experts concluded that it can be used for intermediate-risk PCa and it should be proposed as an effective alternative to radical prostatectomy for patients with strong will of avoiding urinary incontinence and sexual dysfunction. Almost all participants agreed that the transperineal approach of this organ-sparing technique is safer than transrectal and transurethral approaches typical of other techniques (97% of agreement among experts). Pre-procedural assessment, technical aspects, post-procedural catheterization, pharmacological therapy, and expected outcomes were discussed, leading to statements and recommendations.Conclusion: Ech

关键词： Transperineal laser ablation Prostatecancer Benignprostatic hyperplasia Delphi consensus

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Nonlinear orbital uncertainty propagation with differential algebra and Gaussian mixture model

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Science China(Physics,Mechanics & Astronomy) 2019年第3期62卷 82-92页

作者： Zhen-Jiang Sun Ya-Zhong Luo pierluigi di Lizia franco Bernelli Zazzera College of Aerospace Science and Engineering National University of Defense Technology Department of Aerospace Science and Technology Politecnico di Milano

Nonlinear uncertainty propagation is of critical importance in many application fields of astrodynamics. In this article, a framework combining the differential algebra technique and the Gaussian mixture model method is presented to accurately propagate the state uncertainty of a nonlinear system. A high-order Taylor expansion of the final state with respect to the initial deviations is firstly computed with the differential algebra technique. Then the initial uncertainty is split to a Gaussian mixture model.With the high-order state transition polynomial, each Gaussian mixture element is propagated to the final time, forming the final Gaussian mixture model. Through this framework, the final Gaussian mixture model can include the effects of high-order terms during propagation and capture the non-Gaussianity of the uncertainty, which enables a precise propagation of probability density. Moreover, the manual derivation and integration of the high-order variational equations is avoided, which makes the method versatile. The method can handle both the application of nonlinear analytical maps on any domain of interest and the propagation of initial uncertainties through the numerical integration of ordinary differential equation. The performance of the resulting tool is assessed on some typical orbital dynamic models, including the analytical Keplerian motion, the numerical J_2 perturbed motion,and a nonlinear relative motion.

关键词： nonlinear orbit uncertainty propagation differential algebra Gaussian mixture model taylor expansion

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Clinical epidemiology of chronic viral hepatitis B:A Tuscany real-world large-scale cohort study

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World Journal of Hepatology 2018年第5期10卷 409-416页

作者： Cristina Stasi Caterina Silvestri Roberto Berni Maurizia Rossana Brunetto Anna Linda Zignego Cristina Orsini Stefano Milani Liana Ricciardi Andrea De Luca pierluigi Blanc Cesira Nencioni Donatella Aquilini Alessandro Bartoloni Giampaolo Bresci Santino Marchi franco Filipponi Piero Colombatto Paolo Forte Andrea Galli Sauro Luchi Silvia Chigiotti Alessandro Nerli Giampaolo Corti Rodolfo Sacco Paola Carrai Angelo Ricchiuti Massimo Giusti Paolo Almi Andrea Cozzi Silvia Carloppi Giacomo Laffi Fabio Voller Francesco Cipriani Observatory of Epidemiology Regional Health Agency of TuscanyFlorence 50141Italy Center for Systemic Manifestations of Hepatitis Viruses(MaSVE) Internal Medicine and Liver UnitDepartment of Experimental and Clinical MedicineCareggi University HospitalFlorence 50134Italy Web Solutions Data Visualization and Scientific DocumentationRegional Health Agency of TuscanyFlorence 50141Italy Hepatology Unit Department of Clinical and Experimental MedicineUniversity Hospital of PisaPisa 56100Italy Gastroenterology Research Unit Department of Experimental and Clinical Biomedical Sciences“Mario Serio”Careggi University HospitalFlorence 50134Italy Infectious disease Unit Hospital of LuccaLucca 55100Italy Infectious diseases Unit Department of Medical BiotechnologiesSiena University HospitalSiena 53100Italy Infectious disease Unit “S.Maria Annunziata”HospitalPonte a Niccheri 50012Italy Infectious disease Unit Hospital of GrossetoGrosseto 58100Italy Infectious disease Unit Hospital of PratoPrato 59100Italy Infectious and Tropical diseases Unit Department of Experimental and Clinical MedicineCareggi University HospitalFlorence 50134Italy Gastroenterology and Metabolic disorders Department of SurgeryCisanello University HospitalPisa 56100Italy Gastroenterology Unit Department of Translational Research and New Technologies in Medicine and SurgeryCisanello University Hospital of PisaPisa 56100Italy Liver Surgery and Transplantation Unit Department of Surgical PathologyMedicineMolecular and Critical AreaCisanello University HospitalPisa 56100Italy Internal Medicine Unit “San Jacopo”HospitalPistoia 51100Italy Infectious diseases and Hepatology Unit Department of Internal and Specialized MedicineUniversity Hospital of SienaSiena 53100Italy Gastroenterology Unit San Giuseppe HospitalEmpoli 50053Italy Internal Medicine and Liver Unit Department of Experimental and Clinical MedicineCareggi University HospitalFlorence 50135Italy Department of Prevention Central Tuscany Local UnitFlorence 5

AIM To build a regional database of chronic patients to define the clinical epidemiology of hepatitis B virus(HBV)-infected patients in the Tuscan public health care system.METHODS This study used a cross-sectional cohort design. We evaluated chronic viral hepatitis patients with HBV referred to the outpatient services of 16 hospital units. Information in the case report forms included main demographic data, blood chemistry data, viral hepatitis markers, instrumental evaluations, and eligibility for treatment or ongoing therapy and liver transplantation. RESULTS Of 4015 chronic viral hepatitis patients, 1096(27.3%) were HBV infected. The case report form was correctly completed for only 833 patients(64% males, 36% females; mean age 50.1 ± 15.4). Of these HBV-infected patients, 73% were Caucasian, 21% Asian, 4% Central African, 1% North African and 1% American. Stratifying patients by age and nationality, we found that 21.7% of HBV-infected patients were aged < 34 years(only 2.8% were Italian). The most represented routes of transmission were nosocomial/dental procedures(23%), mother-to-child(17%) and sexual transmission(12%). The most represented HBV genotypes were D(72%) and A(14%). Of the patients, 24.7% of patients were HBe Ag positive, and 75.3% were HBe Ag negative. Of the HBV patients 7% were anti-HDV positive. In the whole cohort, 26.9% were cirrhotic(35.8% aged < 45 years), and 47% were eligible for or currently undergoing treatment, of whom 41.9 % were cirrhotic. CONCLUSION Only 27.3% of chronic viral hepatitis patients were HBV infected. Our results provide evidence of HBV infection in people aged < 34 years, especially in the foreign population not protected by vaccination. In our cohort of patients, liver cirrhosis was also found in young adults.

关键词： Hepatitis B virus infection Liver fibrosis Cirrhosis Public health Epidemiology

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