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A Learning-based Control Framework for Fast and Accurate Manipulation of a Flexible Object

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Journal of Bionic Engineering 2024年第4期21卷 1761-1774页

作者： Junyi Wang Xiaofeng Xiong silvia Tolu Stanislav N.Gorb Department of Electrical and Photonics Engineering Technical University of DenmarkAnker Engelunds Vej 101Kongens LyngbyZealand2800Denmark SDU Biorobotics Mærsk Mc-Kinney Møller InstituteUniversity of Southern Denmark(SDU)Campusvej 55Odense MFunen5230Denmark Department Functional Morphology and Biomechanics Zoological InstituteUniversity of KielAm Botanischen Garten 1–9D-24118KielSchleswig-HolsteinGermany

This paper presents a learning-based control framework for fast(3 times of others).Besides,motion tracking errors are greatly reduced to 13.29 and 22.36 of constant impedance control by the OIAC of the proposed *** addition,the trajectory similarity between simulated and physical whips is *** presented framework provides a new method integrating data-driven and physics-based algorithms for controlling fast and accurate arm manipulation of a flexible object.

关键词： Deep reinforcement learning Deformable object manipulation Variable impedance control Sim2real Visual tracking

Endobronchial tumor in children:Unusual finding in recurrent pneumonia,report of three cases

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World Journal of Clinical Pediatrics 2015年第2期4卷 30-34页

作者： silvia madafferi Vincenzo D Catania Antonella Accinni Renata Boldrini Alessandro Inserra Department of General and Thoracic Surgery Bambino Gesù Children Hospital-Resarch Institute Department of Pathology Bambino Gesù Children Hospital-Resarch Institute

We are reporting 3 cases of pediatric endobronchialtumors presented with recurrent pneumonia. The median age of patients, at time of presentation, was 10.6 years. All patients presented with recurrent pneumonia with a mean time to occurrence, after onset of symptoms, of 14 mo. Bronchoscopy was early performed as part of diagnostic work-up and it revealed an endobronchial mass in every case. Complete surgical resection was performed in all cases, with lung preservation in two of them. Neither post-operative chemotherapy nor radiotherapy was required. The mean duration of follow-up was 7 years and all patients are still alive and disease-free. Recurrent pneumonia, in pediatrics, should raise the suspicion of an obstructing lesion, congenital malformation or systemic disease. A systematic approach is useful for organize the clinicians initial workup. Prompt diagnosis allows parenchymal-sparing surgery, which offers the best chance of cure and reduces clinical and functional complications in these patients.

关键词： Recurrent pneumonia Pediatric Endobronchial tumor Mucoepidermoid tumor Carcinoid tumor

Spatial and temporal patterns of forest fires in the Central Monte:relationships with regional climate

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Ecological Processes 2024年第1期13卷 66-79页

作者： Pablo Eugenio Villagra Erica Cesca Leandro Manuel Alvarez silvia Delgado Ricardo Villalba Instituto Argentino de Nivología Glaciología y Ciencias Ambientales–CONICET-CCT Mendoza Facultad de Ciencias Agrarias Universidad Nacional de Cuyo

Background Natural and anthropogenic wildfires burn large areas of arid and semi-arid forests with significant socio-economic and environmental impacts. Fire regimes are controlled by climate, vegetation type, and anthropogenic factors such as ignition sources and human-induced disturbances. Projections of climate and land-use change suggest that these controlling factors will change, altering fire regimes in the near future. In the southern Central Monte, Mendoza, Argentina, the factors that modulate the fire temporal and spatial variability are poorly understood. We reconstructed the fire history of southeast of Mendoza from 1984 to 2023 and investigated the relationships between fire extent and climate variability at seasonal and interannual scales. Burned areas were determined using Google Earth Engine by processing Landsat 5-TM, Landsat 7-ETM+, and Landsat 8-OLI-TIRS sensor *** The region exhibited high spatial and temporal variability in fire occurrence, being a mosaic of areas with different fire histories and recovery times. Between 1985 and 2023, fire recurrence ranged from sites unburned to sites with up to 14 fires. The occurrence of large fires was strongly favored by a combination of a year with abundant spring–early summer precipitation, which favors fuel accumulation, followed by a year of low spring–early summer precipitation. Precipitation and burnt area showed a very pronounced 6–7 year cycle, suggesting a dominant climatic control on fire *** Fire distribution in southeastern Mendoza forests is not homogeneous, resulting in a mosaic of patches with different fire histories. This heterogeneity may be related to vegetation patterns and land use. The temporal variability of fires is strongly influenced by climate variability, which would promote fuel production and subsequent drying. Large fires are concentrated in periods of high interannual precipitation variability. Climate change scenarios predict an increase in tem

关键词： Fire recurrence Fire mapping Recovery time Climate Dry forest Wildfire

Artificial intelligence in detection of small bowel lesions and their bleeding risk:A new step forward

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World Journal of Gastroenterology 2024年第18期30卷 2482-2484页

作者： silvia Cocca Giuseppina Pontillo Giuseppe Grande Rita Conigliaro Gastroenterology and Endoscopy Unit Azienda Ospedaliero Universitaria Policlinico di ModenaModena 41121Italy Gastroenterology and Endoscopy Unit Presidio Ospedaliero San Giuseppe Moscati(AversaCE)-ASL CasertaCaserta 81100Italy Department of Gastroenterology and Digestive Endoscopy Azienda Ospedaliero Universitaria di ModenaModena 41121Italy

The present letter to the editor is related to the study with the title“Automatic detection of small bowel(SB)lesions with different bleeding risk based on deep learning models”.Capsule endoscopy(CE)is the main tool to assess SB diseases but it is a time-consuming procedure with a significant error *** development of artificial intelligence(AI)in CE could simplify physicians’*** novel deep learning model by Zhang et al seems to be able to identify various SB lesions and their bleeding risk,and it could pave the way to next perspective studies to better enhance the diagnostic support of AI in the detection of different types of SB lesions in clinical practice.

关键词： Capsule endoscopy Small bowel Artificial intelligence Bleeding risk Vascular lesions

Evolution, divergence, and convergence in the mandibles of opossums (Didelphidae, Didelphimorphia)

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Current Zoology 2024年第4期70卷 488-504页

作者： Franciscodas Chagas Silva-Neto silvia E.Pavan Diego Astua Laboratorio de Mastozoologia Departamento de ZoologiaUniversidade Federal de Pernambuco.Av.Prof.Moraes Regos.n.Cidade Universitaria.50670-901RecifePEBrazil Department of Biological Sciences California State Polytechnic UniversityHumboldt1Harpst StreetArcataCA95521USA

Didelphid marsupials are considered a morphologically unspecialized group with a generalist diet that includes vertebrates,invertebrates,and plant *** cranium and scapula variation has alreadybeen examined within Didelphidae,variation inmandible shape,usually associated with diet or phylogeny in other mammalian groups,has not yet been properly assessed in the *** evaluated the variation in mandible shape and size of didelphids(2470 specimens belonging to 94 species)using 2D geometric *** classified the diet of the didel-phids into four broad categories to assess whether morphospace ordination relates to dietary *** also provided the most comprehensive phylogeny for the family(i23 out of the 126 living species)using 10 nuclear and mitochondrial *** then mapped mandible size and shape onto that phylogeny for 93 selected taxa and ancestral size and shapes were reconstructed by *** found phylogenetically structured variation in mandible morphology between didelphid groups,and our results indicate that they have a significant phylogenetic *** main axis of shape variation is poorly related to size,but the second is strongly allometric,indicating that allometry is not the main factor in shaping morphological diversity on their *** results indicate that the shape and size of the ancestral mandible of didelphids would be similar to that of the current species of the genus Marmosa.

关键词： mandible Didelphimorphia morphological evolution allometry phylogeny diet.

Characterization of the molecular dysfunctions occurring in Aicardi-Goutieres syndrome patients with mutations in ADAR1

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Genes & Diseases 2024年第3期11卷 116-119页

作者： Sofan Al wardat Loredana Frasinlli Elisa Orecchini Federica Rey silvia Anna Ciafre silvia Galardi Jessica Garau Stella Gagliardi Simona Orcesi Davide Tonduti Stephana Carelli Cristina Cereda Ernesto Picardi Alessandro Michienzi Department of Biomedicine and Prevention University of Rome Tor VergataRome 00133Italy Pediatric Clinical Research Center"Romeo ed Enrica Invernizzi" Department of Biomedical and Clinical SciencesUniversity of MilanoMilano 20157Italy Center of Functional Genomics and Rare Diseases Department of PediatricsBuzzi Children's HospitalMilano20154Italy Department of Child Neurology and Psychiatry IRccs Mondino FoundationPavia 27100Italy Unit of Pediatric Neurology C.O.A.L.A(Center for Diagnosis and Treatment of Leukodystrophies)Buzzi Children's HospitalMilano 20154Italy Department of Biosciences Biotechnologies and EnvironmentUniversityof Bari"AldoMoro"Bari 70125Italy Institute of Biomembranes Bioenergetics and Molecular Biotechnologies(IBIOM)National Research Council(CNR)Bari 70126Italy Biostructures and Biosystems National Institute(INBB) Rome00136Italy Institute of Biochemistry and Cell Biology IBBC-CNRCampus Adriano Buzzati TraversoRome 00015Italy

Aicardi-Goutieres syndrome(AGS)is a systemic inflammatory disorder caused by mutations in any one of the nine different genes,whose deficiency provokes a type I(interferon)IFN response probably central to pathogenesis.^(1) ADAR1,one of the genes mutated in AGS(AGS6),encodes for an enzyme that belongs to the ADAR family(ADAR1,ADAR2,and ADAR3)that catalyzes the conversion of adenosine to inosine within double-stranded RNAs(dsRNAs)(RNA editing A-to-1).

关键词： ADAR1 interferon res

Wear protection assessment of ultralow viscosity lubricants in high-power-density engines:A novel wear prediction algorithm

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Friction 2024年第8期12卷 1785-1800页

作者： Javier BLANCO-RODRÍGUEZ Jacobo PORTEIRO JoséA.LÓPEZ-CAMPOS MartíCORTADA-GARCÍA silvia FERNÁNDEZ-CASTEJÓN CINTECX Universidade de VigoLagoas-Marcosende s/nVigo 36310Spain Repsol SA MadridSpain

Durability and reliability have been studied for decades through intensive trial-error ***,there are numerous fields of application where the costs associated with this approach are not *** lubricated machines with severe dynamic loads,such as high-power-density engines,simulation tools offer clear advantages over intensive *** and multiple scenarios can be cost-effectively simulated to assess different lubricants and engine *** work presented here details the study of wear based on a validated elastohydrodynamic(EHD)simulation model of the connecting rod journal *** model accounts for elastic deformation through a connecting rod finite element model(FEM).In addition,multiple lubricant rheological and tribological dependences,determined by specific experimental tests,are applied in the model through their interaction with the simulation ***,a novel wear algorithm is proposed to predict wear depth over time evolution along a proposed wear cycle based on the typical working ranges of high-performance engines.A final assessment is presented to compare 4 different ultralow-viscosity lubricants in their protective performance under severe *** results show the evolution of the wear load and wear depth over the wear *** evaluation is key to describing a lubricant selection procedure for high-power-density engines.

关键词： wear modelling finite element modelling mixed lubrication elastohydrodynamic(EHD) internal combustion engines bearings

Sex differences in the risk of retinopathy of prematurity:a systematic review,frequentist and Bayesian meta‑analysis,and meta‑regression

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World Journal of Pediatrics 2024年第4期20卷 340-352页

作者： Tamara M.Hundscheid silvia Gulden Mohamad F.Almutairi František Bartoš Giacomo Cavallaro Eduardo Villamor Division of Neonatology Department of PediatricsMosaKids Children’s HospitalMaastricht University Medical Center(MUMC+)School for Oncology and Reproduction(GROW)Maastricht UniversityP.Debyelaan 25.P.O.Box 58006202 AZ MaastrichtThe Netherlands Neonatal Intensive Care Unit Sant’Anna HospitalComoItaly Department of Psychology University of Amsterdam1001 NK AmsterdamThe Netherlands Neonatal Intensive Care Unit Fondazione IRCCS Ca’Granda Ospedale Maggiore PoliclinicoMilanItaly

Background Retinopathy of prematurity(ROP)is generally considered to be more frequent in males than in ***,it is not known whether sex differences in ROP affect all degrees of the condition,are global and have changed as neonatology has *** aimed to conduct a systematic review and meta-analysis of studies addressing sex differences in the risk of developing *** PubMed/MEDLINE and Embase databases were *** frequentist,random-effects risk ratio(RR)and 95%confidence interval(CI)were *** model averaged(BMA)meta-analysis was used to calculate the Bayes factors(BFs).The BF10 is the ratio of the probability of the data under the alternative hypothesis(H1)over the probability of the data under the null hypothesis(H0).Results We included 205 studies(867,252 infants).Frequentist meta-analysis showed a positive association between male sex and severe ROP(113 studies,RR=1.14,95%CI=1.07–1.22)but no association with any ROP(144 studies,RR=1.00,95%CI=0.96–1.03).BMA showed extreme evidence in favor of H1 for severe ROP(BF10=71,174)and strong evidence in favor of H0 for any ROP(BF10=0.05).The association between male sex and severe ROP remained stable over time and was present only in cohorts from countries with a high or high-middle sociodemographic *** Our study confirms the presence of a male disadvantage in severe ROP but not in less severe forms of the *** are variations in the sex differences in ROP,depending on geographical location and sociodemographic level of the countries.

关键词： Oxidative stress Retinopathy of prematurity Sex characteristics

Close relationship between mediators of inflammation and pancreatic cancer:Our experience

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World Journal of Gastroenterology 2024年第23期30卷 2927-2930页

作者： Francesca Vescio Michele Ammendola Giuseppe Currò silvia Curcio Department General Surgery UnitUniversity“Magna Graecia”Medical SchoolUniversity Hospital“R.Dulbecco”Catanzaro 88100Italy Science of Health Department Digestive Surgery UnitUniversity“Magna Graecia”Medical SchoolUniversity Hospital“R.Dulbecco”Catanzaro 88100Italy

In this editorial,we focus specifically on the mechanisms by which pancreatic inflammation affects pancreatic *** of the pancreas remains one of the deadliest cancer *** highest incidence and mortality rates of pancreatic cancer are found in developed *** of pancreatic cancer incidence and mortality vary considerably worldwide.A better understanding of the etiology and identification of the risk factors is essential for the primary prevention of this *** tumors are characterized by a complex microenvironment that orchestrates metabolic alterations and supports a milieu of interactions among various cell types within this *** this editorial,we highlight the foundational studies that have driven our understanding of these *** our experimental center,we have carefully studied the mechanisms of that link pancreatic inflammation and pancreatic *** focused on the role of mast cells(MCs).MCs contain pro-angiogenic factors,including tryptase,that are associated with increased angiogenesis in various *** this editorial,we address the role of MCs in angiogenesis in both pancreatic ductal adenocarcinoma tissue and adjacent normal *** assessment includes the density of c-Kit receptor-positive MCs,the density of tryptase-positive MCs,the area of tryptasepositive MCs,and angiogenesis in terms of microvascularization density.

关键词： Mast cells C-Kit receptor Tryptase Angiogenesis Microvascular density Endothelial area Pancreatic tumor tissue Adjacent normal tissue