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REALISTIC AND CORRECT MODELS OF IMPRESSED SOURCES FOR TIME-HARMONIC ELECTROMAGNETIC BOUNDARY VALUE PROBLEMS INVOLVING METAMATERIALS

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第3期4卷 97-148页

作者： PAOLO FERNANDES mirco RAFFETTO Istituto di Matematica Applicata e Tecnologie Informatiche del Consiglio Nazionale delle Ricerche Via De Marini 6 I-16149 GenoaItaly Department of Biophysical and Electronic Engineering University of Genoa Via Opera Pia 11a I-16145GenoaItaly

The aim of this work is to analyze the role of the impressed sources in determining the well or ill-posedness of time harmonic electromagnetic boundary value problems involving isotropic effective *** is shown,in particular,that,even if all interfaces are regular,the class of ill-posed problems can be very large in the presence of general square-integrable impressed ***,when a simple and realistic constraint is enforced on these sources,requiring that the support of the sources does not include any interface between a traditional medium and a metamaterial,among the problems here considered just those involving an interface between complementary materials remain *** considerations have a very significant impact also on the approximability of the solution of well-posed problems since the numerical noise can introduce small fictitious sources even where the sources to be simulated are not *** effects on finite element simulators are fully ***,we propose an algorithm that allows to obtain much better approximations of the solutions of the most critical wellposed problems.

关键词： Time-harmonic electromagnetic boundary value problems electromagnetic modeling of composite media waveguide discontinuity problems ill-posedness metamaterials electromagnetic simulators finite element methods.

Machine and deep learning driven models for the design of heat exchangers with micro-finned tubes

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Energy and AI 2024年第2期16卷 417-437页

作者： Emad Efatinasab Nima Irannezhad mirco Rampazzo Andrea Diani Department of Information Engineering University of PadovaVia Gradenigo 6/bPadova35131PDItaly Department of Industrial Engineering University of PadovaVia Venezia 1Padova35131PDItaly

The design of micro-finned tube heat exchangers is a complex task due to intricate geometry, heat transfer goals, material selection, and manufacturing challenges. Nowadays, mathematical models provide valuable insights, aid in optimization, and allow us to explore various design parameters efficiently. However, existing empirical models often fall short in facilitating an optimal design because of their limited accuracy, sensitivity to assumption, and context dependency. In this scenario, the use of Machine and Deep Learning (ML and DL) methods can enhance accuracy, manage nonlinearity, adjust to varying conditions, decrease dependence on assumptions, automatically extract pertinent features, and provide scalability. Indeed, ML and DL techniques can derive valuable insights from datasets, contributing to a comprehensive understanding. By means of multiple ML and DL methods, this paper addresses the challenge of estimating key parameters in micro-finned tube heat exchangers such as the heat transfer coefficient (HTC) and frictional pressure drop (FPD). The methods have been trained and tested using an experimental dataset consisting of over a thousand data points associated with flow condensation, involving various tube geometries. In this context, the Artificial Neural Network (ANN) demonstrates superior performance in accurately estimating parameters with MAEs in the range below 4.5% for both HTC and FPD. Finally, recognizing the importance of comprehending the internal mechanisms of the black-box ANN model, the paper explores its interpretability aspects.

关键词： Condensation Micro-finned tube Artificial neural network Machine learning Deep learning

Coagulopathy and transfusion therapy in pediatric livertransplantation

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World Journal of Gastroenterology 2016年第6期22卷 2005-2023页

作者： mirco Nacoti Davide Corbella Francesco Fazzi Francesca Rapido Ezio Bonanomi Pediatric Intensive Care Unit Ospedale Papa Giovanni XXIII Piazza OMS24127 BergamoItaly Department of Anesthesia Ospedale Papa Giovanni XXIII24127 BergamoItaly Faculty of Medicine UniversitàStatale di Milano20122 MilanoItaly

Bleeding and coagulopathy are critical issues complicating pediatric liver transplantation and contributing to morbidity and mortality in the cirrhotic child. The complexity of coagulopathy in the pediatric patient is illustrated by the interaction between three basic models. The first model, "developmental hemostasis", demonstrates how a different balance between pro- and anticoagulation factors leads to a normal hemostatic capacity in the pediatric patient at various ages. The second, the "cell based model of coagulation", takes into account the interaction between plasma proteins and cells. In the last, the concept of "rebalanced coagulation" highlights how the reduction of both pro- and anticoagulation factors leads to a normal, although unstable, coagulation profile. This new concept has led to the development of novel techniques used to analyze the coagulation capacity of whole blood for all patients. For example, viscoelastic methodologies are increasingly used on adult patients to test hemostatic capacity and to guide transfusion protocols. However, results are often confounding or have limited impact on morbidity and mortality. Moreover, data from pediatric patients remain inadequate. In addition, several interventions have been proposed to limit blood loss during transplantation, including the use of antifibrinolytic drugs and surgical techniques, such as the piggyback and lowering the central venous pressure during the hepatic dissection phase. The rationale for the use of these interventions is quite solid and has led to their incorporation into clinical practice; yet few of them have been rigorously tested in adults, let alone in children. Finally, the postoperative period in pediatric cohorts of patients has been characterized by an enhanced risk of hepatic vessel thrombosis. Thrombosis in fact remains the primary cause of early graft failure and re-transplantation within the first 30 d following surgery, and it occurs despite prolongation of standard

关键词： Children Coagulation Thrombosis Liverdisease Transfusion Transplantation Point of carecoagulation

Biomechanics of the anterior cruciate ligament:Physiology,rupture and reconstruction techniques

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World Journal of Orthopedics 2016年第2期7卷 82-93页

作者： Christoph Domnick Michael J Raschke mirco Herbort Department of Trauma Hand and Reconstructive SurgeryWestphalian Wilhelms University Muenster

The influences and mechanisms of the physiology,rupture and reconstruction of the anterior cruciate ligament(ACL)on kinematics and clinical outcomes have been investigated in many biomechanical and clinical studies over the last several *** knee is a complex joint with shifting contact points,pressures and axes that are affected when a ligament is *** ACL,as one of the intra-articular ligaments,has a strong influence on the resulting ***,other meniscal or ligamentous injuries accompany ACL ruptures and further deteriorate the resulting kinematics and clinical *** the surgical options,anatomic relations and current evidence to restore ACL function and considering the influence of concomitant injuries on resulting kinematics to restore full function can together help to achieve an optimal outcome.

关键词： Biomechanics anterior cruciate ligament joint pressure anterior cruciate ligament rupture graft fixation anterior cruciate ligament reconstruction

Towards the FAIRification of Scanning Tunneling Microscopy Images

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Data Intelligence 2023年第1期5卷 27-42页

作者： Tommaso Rodani Elda Osmenaj Alberto Cazzaniga mirco Panighel Cristina Africh Stefano Cozzini AREAScience Park Padriciano9934149TriesteItaly CNR-1OM Consiglio Nazionale delle Ricerche-Istituto Officina dei MaterialiS.S.14Km 163.5Basovizza34149TriesteItaly

In this paper,we describe the data management practices and services developed for making FAIR compliant a scientific archive of Scanning Tunneling Microscopy(STM)*** a first step,we extracted the instrument metadata of each image of the dataset to create a structured *** then enriched these metadata with information on the structure and composition of the surface by means of a pipeline that leverages human annotation,machine learning techniques,and instrument metadata *** visually explore both images and metadata,as well as to improve the accessibility and usability of the dataset,we developed"STM explorer"as a web service integrated within the Trieste Advanced Data services(TriDAS)*** top of these data services and tools,we propose an implementation of the W3C PROV standard to describe provenance metadata of STM images.

关键词： Provenance STM images data management FAIR metadata for nanoscience W3C PROV

Analytic Solutions for Hindered Rotation Quantum Problem

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Applied Mathematics 2024年第10期15卷 709-718页

作者： mirco Ragni Department of Physics State University of Feira de Santana Feira de Santana Brazil

Normalizable analytic solutions of the quantum rotor problem with divergent potential are presented here as solution of the Schrödinger equation. These solutions, unknown to the literature, represent a mathematical advance in the description of physical phenomena described by the second derivative operator associated with a divergent interaction potential and, being analytical, guarantee the optimal interpretation of such phenomena.

关键词： Analytics Solutions Schrodinger Equation Interaction Potential

On the evaluation of ALD TiO_(2),ZrO_(2) and HfO_(2) coatings on corrosion and cytotoxicity performances

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Journal of Magnesium and Alloys 2021年第5期9卷 1828-1841页

作者： mirco Peron Susanna Cogo Maria Bjelland Abdulla Bin Afif Anup Dadlani Elisa Greggio Filippo Berto Jan Torgersen Department of Industrial and Mechanical Engineering Norwegian University of Science and TechnologyRichard Birkelands vei 2b7034 TrondheimNorway Department of Biology University of PadovaVia Ugo Bassi 58/b35131PadovaItaly

Magnesium alloys have been widely studied as materials for temporary implants,but their use has been limited by their corrosion ***,coatings have been proven to provide an effective *** only little explored in the field,Atomic Layer Deposition(ALD)stands out as a coating technology due to the outstanding film conformality and density ***,we provide first insights into the corrosion behavior and the induced biological response of 100 nm thick ALD TiO_(2),HfO_(2)and ZrO_(2)coatings on AZ31 alloy by means of potentiodynamic polarization curves,electrochemical impedance spectroscopy(EIS),hydrogen evolution and MTS colorimetric assay with L929 *** three coatings improve the corrosion behavior and cytotoxicity of the ***,HfO_(2)coatings were characterized by the highest corrosion resistance and cell viability,slightly higher than those of ZrO_(2)***_(2)was characterized by the lowest corrosion improvements and,though generally considered a biocompatible coating,was found to not meet the demands for cellular applications(it was characterized by grade 3 cytotoxicity after 5 days of culture).These results reveal a strong link between biocompatibility and corrosion resistance and entail the need of taking the latter into consideration in the choice of a biocompatible coating to protect degradable Mg-based alloys.

关键词： Atomic layer deposition(ALD) Coatings Corrosion resistance Cytocompatibility Magnesium

Anastomotic leakage in rectal cancer surgery:Retrospective analysis of risk factors

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World Journal of Clinical Cases 2022年第36期10卷 13321-13336页

作者： Giuseppe Brisinda Maria Michela Chiarello Gilda Pepe Maria Cariati Valeria Fico Paolo mirco Valentina Bianchi Department of Medical and Surgical Sciences Fondazione Policlinico Universitario A Gemelli IRCCSRome 00168Italy Department of Surgery UniversitàCattolica S CuoreRome 00168Italy Department of Surgery Azienda Sanitaria Provinciale di CosenzaCosenza 87100Italy Emergency Surgery and Trauma Center Fondazione Policlinico Universitario A Gemelli IRCCSRome 00168Italy Department of Surgery Azienda Sanitaria Provinciale di CrotoneCrotone 88900Italy

BACKGROUND Anastomotic leakage(AL)after restorative surgery for rectal cancer(RC)is associated with significant morbidity and *** To ascertain the risk factors by examining cases of AL in rectal surgery in this retrospective cohort *** To identify risk factors for AL,a review of 583 patients who underwent rectal resection with a double-stapling colorectal anastomosis between January 2007 and January 2022 was ***,demographic and operative features,intraoperative outcomes and oncological characteristics were *** The incidence of AL was 10.4%,with a mean time interval of 6.2±2.1 *** mortality was 0.8%.Mortality was higher in patients with AL(4.9%)than in patients without leak(0.4%,P=0.009).Poor bowel preparation,blood transfusion,median age,prognostic nutritional index<40 points,tumor diameter and intraoperative blood loss were identified as risk factors for *** of anastomosis,number of stapler cartridges used to divide the rectum,diameter of circular stapler,level of vascular section,T and N status and stage of disease were also correlated to AL in our *** diverting ileostomy did not reduce the leak rate,while the use of the transanastomic tube significantly *** Clinical,surgical and pathological factors are associated with an increased risk of *** adversely affects the morbidity and mortality of RC patients.

关键词： Anastomosis Leak Anterior resection Morbidity Mortality Rectal surgery

PRIVATBESITZ UND AMTSBESITZ DER GYPTISCHEN NOMARCHEN IM MITTLEREN REICH

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Journal of Ancient Civilizations 2004年第1期19卷 45-58页

作者： mirco Hüneburg IHAC