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Compressing deep-quaternion neural networks with targeted regularisation

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CAAI Transactions on Intelligence Technology 2020年第3期5卷 172-176页

作者： riccardo Vecchi Simone Scardapane Danilo Comminiello Aurelio Uncini Department of Information Engineering Electronics and Telecommunications(DIET)‘Sapienza’University of RomeRoma Lazio 00185Italy

In recent years,hyper-complex deep networks(such as complex-valued and quaternion-valued neural networks–QVNNs)have received a renewed interest in the *** find applications in multiple fields,ranging from image reconstruction to 3D audio *** to their real-valued counterparts,quaternion neural networks require custom regularisation strategies to avoid *** addition,for many real-world applications and embedded implementations,there is the need of designing sufficiently compact networks,with few weights and ***,the problem of regularising and/or sparsifying QVNNs has not been properly addressed in the literature as of *** this study,the authors show how to address both problems by designing targeted regularisation strategies,which can minimise the number of connections and neurons of the network during *** this end,they investigate two extensions of ℓ1 and structured regularisations to the quaternion *** the authors’experimental evaluation,they show that these tailored strategies significantly outperform classical(realvalued)regularisation approaches,resulting in small networks especially suitable for low-power and real-time applications.

关键词： networks neural valued

Updates on larynx cancer epidemiology

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Chinese Journal of Cancer Research 2020年第1期32卷 18-25页

作者： riccardo Nocini Gabriele Molteni Camilla Mattiuzzi Giuseppe Lippi Section of Ear Nose and Throat(ENT) Department of Surgical SciencesDentistryGynecology and PediatricsUniversity of VeronaVerona 37134Italy Service of Clinical Governance Provincial Agency for Social and Sanitary ServicesTrento 38123Italy Section of Clinical Biochemistry Department of NeuroscienceBiomedicine and MovementUniversity of VeronaVerona 37134Italy

Objective: Laryngeal cancer is an important oncologic entity, whose prognosis depends on establishing appropriate preventive and diagnostic measures, especially in populations at higher ***: Epidemiologic information including worldwide incidence, prevalence, burden of health loss(disability-adjusted life year;DALYs) and mortality of larynx cancer was obtained from the Global Health Data Exchange(GHDx) ***: The current incidence, prevalence and mortality of laryngeal cancer are estimated at 2.76 cases/year per 100,000 inhabitants, 14.33 cases/year per 100,000 inhabitants and 1.66 deaths/year per 100,000 inhabitants,respectively, averaging 3.28 million DALYs each year. Incidence and prevalence have increased by 12% and 24%,respectively during the past 3 decades, whilst mortality has declined by around 5%. The epidemiologic burden of this malignancy is approximately 5-fold higher in males and increases in parallel with ageing, peaking after 65 years of age. Both incidence and mortality rates are higher in Europe and lower in Africa, but the ratio between deaths and incidence is the highest in Africa. Incidence has gradually declined in Europe during the past 3 decades, whilst it has increased in South-East Asia and Western Pacific. Cigarette smoking and alcohol abuse contribute for about 90% of overall worldwide mortality for laryngeal ***: Laryngeal cancer still poses a high clinical and societal burden, with an escalating temporal trend not expected to reverse soon.

关键词： Larynx laryngeal cancer larynx cancer epidemiology mortality

Single‐pixel terahertz imaging:a review

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Opto-Electronic Advances 2020年第9期3卷 15-29页

作者： Luca Zanotto riccardo Piccoli Junliang Dong Roberto Morandotti Luca Razzari Institut National de la Recherche Scientifique(INRS) CentreÉnergieMatériaux et Télécommunications(EMT)VarennesQC J3X 1S2Canada Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

This paper is devoted to reviewing the results achieved so far in the application of the single-pixel imaging technique to terahertz(THz)*** use of THz radiation for imaging purposes has been largely explored in the last twenty years,due to the unique capabilities of this kind of radiation in interrogating material ***,THz imaging systems are still limited by the long acquisition time required to reconstruct the object image and significant efforts have been recently directed to overcome this *** of the most promising approaches in this sense is the so-called“single-pixel”imaging,which in general enables image reconstruction by patterning the beam probing the object and measuring the total transmission(or reflection)with a single-pixel detector(i.e.,with no spatial resolution).The main advantages of such technique are that i)no bulky moving parts are required to raster-scan the object and ii)compressed sensing(CS)algorithms,which allow an appropriate reconstruction of the image with an incomplete set of measurements,can be successfully ***,this can result in a reduction of the acquisition *** this review,we cover the experimental solutions proposed to implement such imaging technique at THz frequencies,as well as some practical uses for typical THz applications.

关键词： terahertz imaging single-pixel imaging compressed sensing

Gadoxetic acid magnetic-enhanced resonance imaging in the diagnosis of cholangiocarcinoma

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World Journal of Gastroenterology 2020年第29期26卷 4261-4271页

作者： riccardo Inchingolo Cesare Maino Marco Gatti Eleonora Tricarico Michele Nardella Luigi Grazioli SandroSironi Davide Ippolito riccardo Faletti Division of Interventional Radiology Department of RadiologyMadonna delle Grazie HospitalMatera 75100Italy Department of Diagnostic Radiology School of MedicineUniversity of Milano-BicoccaMonza 20900Italy Department of Surgical Sciences Radiology UnitUniversity of TurinTurin 10126Italy Department of Radiology Spedali CiviliUniversity of BresciaBrescia 25123Italy Department of radiology Papa Giovanni XXIII HospitalUniversity Milano-BicoccaBergamo 20110Italy

The use of liver magnetic resonance imaging is increasing thanks to itsmultiparametric sequences that allow a better tissue characterization, and the useof hepatobiliary contrast agents. This review aims to evaluate gadoxetic acidenhanced magnetic resonance imaging in the diagnosis and staging ofcholangiocarcinoma and its different clinical and radiological classificationsproposed in the literature. We also analyze the epidemiology, risk factors incorrelation with clinical findings and laboratory data.

关键词： Hepatobiliary contrast materials Gadoxetic acid Cholangiocarcinoma Magnetic resonance imaging Liver Cirrhosis

Chronic hepatitis C,atherosclerosis and cardiovascular disease: What impact of direct-acting antiviral treatments?

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World Journal of Gastroenterology 2018年第41期24卷 4617-4621页

作者： Luigi Elio Adinolfi Luca Rinaldi riccardo Nevola Department of Medical SurgicalNeurologicalMetabolicand Geriatric SciencesUniversity of Campania "L.Vanvitelli"

Hepatitis C virus (HCV) infection is associated with extrahepatic manifestations, among these there is an increased risk of atherosclerosis and cardiovascular disease as well as an increased cardiovascular mortality. Several direct and indirect HCV pro-atherogenic mechanisms have been proposed. HCV lives and replicates within carotid plaques, promoting a local environment of pro-atherogenic factors. In addition, it causes conditions such as insulin resistance, diabetes, hepatic steatosis, cryoglobulinemia and endotoxinemia that are associated with the development of atherosclerosis and cardiovascular disease. Therapeutic regimens based on direct-acting antiviral agents (DAA) are currently available with high efficacy in HCV clearance and improvement of liver disease, but does HCV eradication also improve atherosclerosis and the risk of cardiovascular disease? Recently, a multi-center study has shown that elimination of HCV improves carotid atherosclerosis. Two studies have shown that DAA treatments significantly reduce the risk of cardiovascular events. Several studies have assessed the impact of HCV clearance on pro-atherosclerosis metabolic conditions showing improvement in cardiovascular risk biomarkers, disappearance or improvement of insulin resistance, reduction of risk of developing diabetes and improvement of glycemic control. There are also evidences that HCV clearance promotes the recovery of cytokines and inflammatory markers associated with atherosclerosis and the disappearance of cryoglobulinemia. Available data show that clearance of HCV by DAAs is associated with an improvement in atherosclerosis and metabolic and immunological conditions that promote the development of cardiovascular disease. However, the data are not sufficient to allow definitive conclusions and further studies will be needed to definitively clarify the impact of HCV clearance on atherosclerosis and cardiovascular disease.

关键词： Direct-acting antiviral agents Hepatitis C virus Atherosclerosis Insulin resistance Cardiovascular disease

Locoregional treatments for hepatocellular carcinoma: Current evidence and future directions

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World Journal of Gastroenterology 2019年第32期25卷 4614-4628页

作者： riccardo Inchingolo Alessandro Posa Martin Mariappan Stavros Spiliopoulos Division of Interventional Radiology Department of RadiologyMadonna delle Grazie HospitalMatera 75100Italy Department of Radiology King′s College HospitalLondon SE5 9RSUnited Kingdom Department of Radiology IRCSS Fatebenefratelli HospitalRoma 00186Italy Interventional Radiology Department Aberdeen Royal Infirmary HospitalAberdeen AB25 2ZNUnited Kingdom 2nd Radiology Department School of MedicineNational and Kapodistrian University of AthensChaidari Athens 12461Greece

Liver cancers are the second most frequent cause of global cancer-related mortality of which 90%are attributable to hepatocellular carcinoma(HCC).Despite the advent of screening programmes for patients with known risk factors,a substantial number of patients are ineligible for curative surgery at presentation with limited outcomes achievable with systemic chemotherapy/external *** has led to the advent of numerous minimally invasive options including but not limited to trans-arterial chemoembolization,radiofrequency/microwave ablation and more recently selective internal radiation therapy many of which are often the first-line treatment for select stages of HCC or serve as a conduit to liver *** authors aim to provide a comprehensive overview of these various image guided minimally invasive therapies with a brief focus on the technical aspects accompanied by a critical analysis of the literature to assess the most up-to-date evidence from comparative systematic reviews and meta-analyses finishing with an assessment of novel combination regimens and future directions of travel.

关键词： Hepatocellular carcinoma Cirrhosis Liver Interventional oncology Transarterial chemo embolization Selective internal radiation therapy Ablation

High-efficiency reflector-less dual-level silicon photonic grating coupler

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光子学研究:英文版 2023年第7期11卷 1275-1283页

作者： VALERIO VITALI THALíA DOMíNGUEZ BUCIO COSIMO LACAVA riccardo MARCHETTI LORENZO MASTRONAR TEERAPAT RUTIRAWUT GLENN CHURCHILL JOAQUíN FANECA JAMES C.GATES FREDERIC GARDES PERIKLIS PETROPOULOS Optoelectronics Research Centre University of SouthamptonSouthamptonSO171BJUK Electrical Computer and Biomedical Engineering DepartmentUniversity of Pavia27100 PaviaItaly Advanced Fiber Resources Milan S.r.l. 20098 San Donato MilaneseItaly Currently at Instituto de Microelectrónica de Barcelona IMB-CNM(CSIC)Campus UAB08193 BellaterraSpain

We present the design and experimentally demonstrate a dual-level grating coupler with subdecibel efficiency for a 220 nm thick silicon photonics waveguide which was fabricated starting from a 340 nm silicon-on-insulator *** proposed device consists of two grating levels designed with two different linear apodizations,with opposite chirping signs,and whose period is varied for each scattering unit.A coupling efficiency of-0.8 d B at1550 nm is experimentally demonstrated,which represents the highest efficiency ever reported in the telecommunications C-band in a single-layer silicon grating structure without the use of any backreflector or indexmatching material between the fiber and the grating.

关键词： waveguide scattering grating

Impact of body mass index in elderly patients treated with laparoscopic liver resection for hepatocellular carcinoma

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World Journal of Gastrointestinal Surgery 2023年第1期15卷 72-81页

作者： Maria Conticchio riccardo Inchingolo Antonella Delvecchio Francesca Ratti Maximiliano Gelli Massimiliano Ferdinando Anelli Alexis Laurent Giulio Cesare Vitali Paolo Magistri Giacomo Assirati Emanuele Felli Taiga Wakabayashi Patrick Pessaux Tullio Piardi Fabrizio di Benedetto Nicola de’Angelis Javier Briceño Antonio Rampoldi RenèAdam Daniel Cherqui Luca Antonio Aldrighetti riccardo Memeo Unit of Hepato-Pancreatic-Biliary Surgery “F.Miulli”Regional General HospitalBari 70021Italy Interventional Radiology Unit “F.Miulli”Regional General HospitalBari 70021Italy Unit of Hepatobiliary Surgery San Raffaele HospitalMilano 20132Italy Departement de Chirurgie Viscérale Gustave Roussy Cancer Campus Grand ParisParis 94800France Unit of Oncologic and Pancreatic Surgery Hospital University Reina SofíaCordoba 14004Spain Assistance Publique-Hôpitaux de Paris Department of Digestive and Hepatobiliary SurgeryCentre Hospitalier Universitaire Henri MondorCréteilParis 94000France Service of Abdominal Surgery Poliambulanza FoundationBrescia 25124Italy Hepato-Pancreato-Biliary Surgery and Liver Transplantation Unit University of Modena and Reggio EmiliaModena 41121Italy Institut de Recherche Contre les Cancers de l’Appareil Digestif(IRCAD) Strasbourg 67000France Service de Chirurgie Viscérale et Digestive Nouvel Hôpital CivilStrasbourg 67000France Department of Surgery Hôpital Robert DebréReims 51092France Interventional Radiology Unit Niguarda HospitalMilan 20162Italy Department of Surgery Centre HepatobiliaireHopital Paul BrousseParis 94000France

BACKGROUND The impact of obesity on surgical outcomes in elderly patients candidate for liver surgery is still *** To evaluate the impact of high body mass index(BMI)on perioperative and oncological outcome in elderly patients(>70 years old)treated with laparoscopic liver resection for hepatocellular carcinoma(HCC).METHODS Retrospective multicenter study including 224 elderly patients(>70 years old)operated by laparoscopy for HCC(196 with a BMI<30 and 28 with BMI≥30),observed from January 2009 to January *** After propensity score matching,patients in two groups presented comparable results,in terms of operative time(median range:200 min vs 205 min,P=0.7 respectively in non-obese and obese patients),complications rate(22%vs 26%,P=1.0),length of hospital stay(median range:4.5 d vs 6.0 d,P=0.1).There are no significant differences in terms of short-and long-term postoperative *** The present study showed that BMI did not impact perioperative and oncologic outcomes in elderly patients treated by laparoscopic resection for HCC.

关键词： Hepatocellular carcinoma Body mass index Laparoscopy Surgical resection Elderly patients Propensity score matching

Tree colonization by the Asian longhorn beetle, Anoplophora glabripennis （Coleoptera： Cerambycidae）： effect of habitat and tree suitability

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Insect Science 2016年第2期23卷 288-296页

作者： Massimo Faccoli riccardo Favaro Giuseppe Concheri Andrea Squartini Andrea Battisti Department of Agronomy Food Natural resources Animals and Environment (DAFNAE) University of Padova Legnaro (PD) Italy

Tree colonization and feeding activity of the invasive wood-borer Asian longhorn beetle （Anoplophora glabripennis）, an Asian pest introduced into North America and Europe, was studied in a newly invaded area in Italy. The hypothesis be- ing tested was that the reproductive success of the insect depend on habitat type and tree suitability. Adult beetles were caged on branches of host and nonhost species, in both urban and forest habitats. Two months later, number and size of feeding patches on plant tissues, eggs laid, and surviving larvae were assessed. Bark concentration of C and N was also measured from the same trees. Results indicated that the mean area of plant tissues consumed by adult feeding was significantly larger on trees growing in forest than in urban habitat, although within the same habitat there were no differences between susceptible and nonsusceptible trees. ALB tree colonization, in terms of number of eggs laid and young larvae survival, was not affected by habitat while it was higher on susceptible trees. Although trees growing in forests had a lower nitrogen concentration, they allowed colo- nization rates similar to those of trees growing in the urban habitat. Hence, the amount of carbon and nitrogen did not fully explain tree suitability or habitat selection. We suggest compensatory feeding as a potential mechanism that might explain this peculiar situation, as supported by a more intensive feeding activity recorded on trees in the forest. Suitability of different trees may be due to other factors, such as secondary chemical compounds.

关键词： Asian longhorn beetle performance breeding feeding forest nonhost urban