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Light(Science & Applications) 2020年第1期9卷 1398-1409页

作者： Jerome Lapointe Jean-Philippe Berube Yannick Ledemi Albert Dupont Vincent Fortin Younes Messaddeq real vallee Centre d’Optique Photonique et Laser2375 Rue de la TerrasseUniversite LavalG1V 0A6 QuebecQCCanada

Multiphoton absorption via ultrafast laser focusing is the only technology that allows a three-dimensional structural modification of transparent ***,the magnitude of the refractive index change is rather limited,preventing the technology from being a tool of choice for the manufacture of compact photonic integrated *** propose to address this issue by employing a femtosecond-laser-induced electronic band-gap shift(FLIBGS),which has an exponential impact on the refractive index change for propagating wavelengths approaching the material electronic resonance,as predicted by the Kramers–Kronig *** by theoretical calculations,based on a modified Sellmeier equation,the Tauc law,and waveguide bend loss calculations,we experimentally show that several applications could take advantage of this ***,we demonstrate waveguide bends down to a submillimeter radius,which is of great interest for higher-density integration of fs-laser-written quantum and photonic *** also demonstrate that the refractive index contrast can be switched from negative to positive,allowing direct waveguide inscription in ***,the effect of the FLIBGS can compensate for the fs-laser-induced negative refractive index change,resulting in a zero refractive index change at specific wavelengths,paving the way for new invisibility applications.

关键词： waveguide millimeter refractive

Watt-level and spectrally flat mid-infrared supercontinuum in fluoroindate fibers

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Photonics Research 2018年第6期6卷 609-613页

作者： FRANCIS THEBERGE NANCY BERUBE SAMUEL POULAIN SOLENN COXIC LOUIS-RAFAEL ROBICHAUD MARTIN BERNIER real vallee Defence R&D Canada Valcartier Centre Quebec G3J1X5 Canada Le Verre Fluore Campus KerLann F-35170 Bruz Brittany France Center for Optics Photonics and Lasers (COPL) Universite Laval Quebec G1V0A6 Canada

We report on infrared supercontinuum （SC） generation in step-index fluoroindate-based fiber by using an all-fiber laser source. In comparison to widely used ZBLAN fibers for high-power mid-infrared （MIR） SC generation, fluoroindate fibers have multiphoton absorption edges at significandy longer wavelengths and can sustain similar intensities. Recent developments highlighted in the present study allowed the production of fluoroindate fibers with MIR background loss of 2 dB/km, which is similar to or even better than ZBLAN fibers. By using an all-fiber picosecond laser source based on an erbium amplifier followed by a thulium power amplifier, we demonstrate the generation of 1.0 W infrared SC spanning over 2.25 octaves from 1 μm to 5 μm. The generated MIR SC also exhibits high spectral flatness with a 6 dB spectral bandwidth from 1.91 μm to 4.77 μm and an average power two orders of magnitude greater than in previous demonstrations with a similar spectral distribution.

关键词： Fiber optics infrared Nonlinear optics fibers Supercontinuum generation

Reliability of Echocardiographic Pulmonary Vascular Resistance to Screen for the New Definition of Precapillary Pulmonary Hypertension in Uncorrected Secundum Atrial Septal Defect

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Congenital Heart Disease 2024年第3期19卷 315-324页

作者： Risalina Myrtha Hasanah Mumpuni real Kusumanjaya Marsam Dyah Wulan Anggrahini Anggoro Budi Hartopo Lucia Kris Dinarti Department of Cardiology and Vascular Medicine Faculty of MedicineUniversitas Sebelas MaretSurakarta57126Indonesia Department of Cardiology and Vascular Medicine Universitas Sebelas Maret HospitalSukoharjo57161Indonesia Department of Cardiology and Vascular Medicine Faculty of MedicinePublic Healthand NursingUniversitas Gadjah MadaYogyakarta55281Indonesia Department of Cardiology and Vascular Medicine Dr.Sardjito HospitalYogyakarta55284Indonesia

Background and Objective:The most feared complication of uncorrected secundum Atrial Septal Defect(ASD)is pulmonary arterial hypertension(PAH).Pulmonary vascular resistance(PVR)is crucial in detecting precapil-lary pulmonary hypertension(PH)to guide the need for PAH-specific *** is a change in the cut-off value of PVR according to the recently updated PH *** echocardiographic PVR(PVRecho)correlates to PVR by right heart catheterization(RHC)(PVRcath)according to the new guidelines has not been *** aim of this study is to determine the reliability of PVRecho in detecting PAH in Uncorrected Ostium Secundum ASD based on the current updated guideline and to help screen the high PVR ***:429 ostium secun-dum ASD in the COngenital HeARt Disease in Adult and Pulmonary Hypertension(COHARD-PH)registry was divided into three groups according to the *** was calculated using Abbas’Formula and compared the its gold standard,the *** correlation between the two methods was *** Bland-Altman plot was used to analyze the agreement between the two *** operating characteristics(ROC)analysis was used to determine the PVRecho cut-off value for high ***:The majority of the population(63.5%)had high *** gender dominated the study population(84%).PVR_(echo) was significantly correlated with PVRcath(r=0.6225,p1.62 WU showed good dis-criminatory power in determining high PVR.

关键词： Pulmonary vascular resistance atrial septal defect echocardiography

Optimization of a photovoltaic-battery system using deep reinforcement learning and load forecasting

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Energy and AI 2024年第2期16卷 168-183页

作者： António Corte real G.Pontes Luz J.M.C.Sousa M.C.Brito S.M.Vieira IDMEC Instituto Superior TécnicoUniversidade de LisboaLisboa1049-001Portugal Instituto Dom Luiz Faculdade de CiênciasUniversidade de LisboaCampo Grande1749-016LisboaPortugal

Home Energy Management Systems(HEMS)are increasingly relevant for demand-side management at the residential level by collecting data(energy,weather,electricity prices)and controlling home appliances or storage *** control can be performed with classical models that find optimal solutions,with high real-time computational cost,or data-driven approaches,like Reinforcement Learning,that find good and flexible solutions,but depend on the availability of load and generation data and demand high computational resources for *** this work,a novel HEMS is proposed for the optimization of an electric battery operation in a real,online and data-driven environment that integrates state-of-the-art load forecasting combining CNN and LSTM neural networks to increase the robustness of *** Reinforcement Learning agents are trained with different algorithms(Double DQN,Dueling DQN,Rainbow and Proximal Policy Optimization)in order to minimize the cost of electricity purchase and to maximize photovoltaic self-consumption for a PV-Battery residential *** show that the best Reinforcement Learning agent achieves a 35%reduction in total cost when compared with an optimization-based agent.

关键词： Energy management system Deep reinforcement learning Demand-side management Load forecasting Deep learning Energy storage systems

Indoor localization for pedestrians with real-time capability using multi-sensor smartphones

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Geo-Spatial Information Science 2019年第2期22卷 73-88,I0001页

作者： Catia real Ehrlich Jörg Blankenbach Geodetic Institute and Chair for Computing in Civil Engineering&Geo Information Systems RWTH Aachen UniversityAachenGermany

The localization of persons or objects usually refers to a position determined in a spatial reference ***,this is usually accomplished with Global Navigation Satellite Systems(GNSS).However,the automatic positioning of people in GNSS-free environments,especially inside of buildings(indoors)poses a huge ***,satellite signals are attenuated,shielded or reflected by building components(*** or ceilings).For selected applications,the automatic indoor positioning is possible based on different technologies(***,RFID,or UWB).However,a standard solution is still not *** indoor positioning systems are only suitable for specific applications or are deployed under certain conditions,*** infrastructures or sensor ***,as popular cost-effective multi-sensor systems,is a promising indoor localization platform for the mass-market and is increasingly coming into ***’s devices are equipped with a variety of sensors that can be used for indoor *** this contribution,an approach to smartphone-based pedestrian indoor localization is *** novelty of this approach refers to a holistic,real-time pedestrian localization inside of buildings based on multisensor smartphones and easy-to-install local positioning *** this purpose,the barometric altitude is estimated in order to derive the floor on which the user is *** 2D position is determined subsequently using the principle of pedestrian dead reckoning based on user's movements extracted from the smartphone *** order to minimize the strong error accumulation in the localization caused by various sensor errors,additional information is integrated into the position *** building model is used to identify permissible(***,passageways)and impermissible(***)building areas for the *** technologies contributing to higher precision and robustness are also *** the fusion of diffe

关键词： Indoor positioning MEMS recursive Bayesian estimation particle filter sensor fusion Bluetooth beacons WLAN fingerprinting magnetic anomalies

Changes in potential mammal diversity in national parks and their implications for conservation

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Current Zoology 2018年第6期64卷 671-679页

作者： Alba ESTRADA A.Marcia BARBOSA Raimundo real Biogeography Diversity and Conservation LabDepartment of Animal BiologyUniversidad de MalagaSpain Research Unit of Biodiversity (UMIB UO-CSIC-PA)Oviedo Univ.-Campus MieresSpain CIBIO/InBIO-University of Evora Portugal

Observed species richness (OSR)is a widely used and well-studied biodiversity ***, non-observed species in favorable ecosystems are also *** metrics that include observed and potential species were recently defined:potential biodiversity (hereafter potential species richness--PSR)and geometric mean of favorabilities (GMF).We used these metrics to evaluate the national park network of mainland Spain at two time periods (2002 and 2015),using terrestrial mammals on a UTM 100-km^2 *** and GMF are based on the favorability function, a species distribution model that assesses how favorable an area is for the presence of a species, over and above its prevalence in the study *** each park and for the whole network,we calculated the mean and sum of OSR,PSR,and GMF in each time period,as well as changes between *** and PSR were higher inside than outside the park network in both time periods. Thus,although the network covers a very small proportion of the country,it performs well for the representation of mammal species and their favorable ***,mean PSR was lower in 2015 than in 2002 inside the national park network,whereas the opposite was the case outside the *** Parks generally not only concentrated highly favorable areas for mammals, but they also showed less favorable areas in 2015 compared to 2002,although the reduction was moderate to *** is a result to consider for future analyses because if the tendency increases, it may have consequences for the conservation of mammals and for the adequacy of the national park network.

关键词： conservation planning dark diversity environmental favorability potential biodiversity protected areas

Analysis of three-dimensional vortexes below the free surface in a continuous casting mold

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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 397-406页

作者： Cesar A.real-Ramirez Jesus I.Gonzalez-Trejo Universidad Autonoma Metropolitana-Azcapotzalco.San Pablo 180 02200Mexico CityMexico

To study fluctuations of the free surface of liquid steel in the mold,two different models with the same casting conditions but different thicknesses were employed to analyze the hydrodynamic behavior at the top of the *** first model was a standard thickness slab,and the second had a thickness three times *** is found with the second model that above the plane formed by the steel jets,it is possible to observe four three-dimensional vortexes that interact with the submerged entry nozzle（SEN）and mold *** using a biphasic model to simulate the interface between the liquid and air inside the mold,the flow asymmetry and the fluctuations of the free surface can be clearly observed.

关键词： continuous casting molds flow patterns three dimensional vortes mathematical models computer simulation

Prognostic role of selection criteria for liver transplantation in patients with hepatocellular carcinoma:Review and bibliometric

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iLIVER 2024年第1期3卷 52-61页

作者： Pamela Scarlett Espinoza Loyola Diana Laura Muratalla Bautista Karen Adela Hernández Bautista Elizabeth Gil White JoséAntonio González Moreno Daniel Angel Torres del real Víctor Manuel Páez Zayas Carla Escorza-Molina Fernando Mondragón Rodríguez Omar Vásquez Gómez Luis Jorge Fernández López Paul Santiago Mogrovejo Vázquez Isidoro Aczel Sánchez-Cedillo Víctor Jose Visag Castillo Social Service Internship Universidad Nacional Autónoma de MéxicoMexico City 04510Mexico Social Service Internship Universidad AnahuacMexico City 04510Mexico Department of Surgery Division of Transplantation Surgery Hospital General de MéxicoMexico City 06720Mexico Departament of Gastroenterology Division of HepatologyHospital General de MéxicoMexico City 06720Mexico Departmanet of Anesthesiology Hospital General de MéxicoMexico City 06720Mexico

Hepatocellular carcinoma(HCC)is one of the most common cancers in the world and is one of the leading indications for liver transplantation,liver transplantation is the gold standard treatment for end stage liver *** is based up on radiological characteristics and rarely biopsy *** treatment must be individualized to each patient to improve recurrences and *** this article,we focus on the different selection criteria for liver *** study aimed to investigate the distribution laws and research frontiers of international literature,so as to present holistic bibliometric evaluation of the studies on 5-year survival and disease-free recurrence in 5 years,according to hepatocarcinoma criteria for liver *** paper aims to review and analyze 5-year survival and disease-free recurrence based on hepatocarcinoma criteria for liver *** systematically examines and summarizes distribution characteristics and research frontiers through bibliometric analysis.A bibliographic search was implemented in PubMed/Medline,Clinical Key,Science Direct and Index Medicus with MESH terms,from the year 1996–*** selected for transplantation using the Metroticket 2.0(MT2)criteria had the highest overall survival along with patients selected for transplantation using the Milan Criteria had the best 5-year disease-free *** Metroticket 2.0 criteria(MT2)and Milan Criteria(MC)have shown the most favorable post-transplant outcomes for patients with hepatocellular carcinoma(HCC).However,MC demonstrated the best 5-year disease-free recurrence rate,underscoring the significance of taking into account tumor morphology and biology when determining the eligibility of HCC patients for liver *** distribution characteristics and research frontiers by bibliometrics concerning prognostic role of selection criteria for liver transplantation in patients with hepatocellular carcinoma the collaboration

关键词： Hepatocellular carcinoma Liver transplantation Survival Criteria Recurrence Bibliometrics

Cervical Cancer Detection Based on Novel Decision Tree Approach

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Computer Systems Science & Engineering 2023年第2期44卷 1025-1038页

作者： S.R.Sylaja vallee Narayan R.Jemila Rose Department of Computer Science and Engineering Infant Jesus College of EngineeringThoothukkudiTamilnadu628851India Department of Computer Science and Engineering St.Xavier’s Catholic College of EngineeringNagercoilTamilnadu629003India

Cervical cancer is a disease that develops in the cervix’s *** cancer mortality is being reduced due to the growth of screening *** cancer screening is a big issue because the majority of cervical cancer screening treatments are ***,there is apprehension about standard screening procedures,as well as the time it takes to learn the *** are different methods for detecting problems in the cervix using Pap(Papanico-laou-stained)test,colposcopy,Computed Tomography(CT),Magnetic Reso-nance Image(MRI)and *** obtain a clear sketch of the infected regions,using a decision tree approach,the captured image has to be segmented and *** goal of creating a decision tree is to establish prediction model that anticipate the feature vector based on the input *** paper deals with investigating various techniques of segmentation for detecting the cervical *** proposes a novel method to develop an assistance system for the detection diag-nosis of cervical cancer,based on work of Martin,Byriel and *** analysis is focused on Pap smear pictures of single *** testing is a method of detecting abnormalities in the *** processing is an effective method for extracting *** is used to determine the size of cervical carcinoma and the length of the ***’s database,which is open source and utilised for analysis and valida-tion,is obtainable for research *** malignancy information utilizing three grouping strategies to anticipate the disease and afterward analyzed the out-comes showed that choice tree is the best classiﬁer indicator with the test *** investigations ought to be led to improve execution.

关键词： Cervical cancer image segmentation level set threshold watershed

Complementarity of electric vehicles and pumped-hydro as energy storage in small isolated energy systems:case of La Palma,Canary Islands

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Journal of Modern Power Systems and Clean Energy 2016年第4期4卷 604-614页

作者： Alfredo RAMIREZ-DIAZ Francisco J.RAMOS-real Gustavo A.MARRERO Departamento de Economı´a Contabilidad y FinanzasFacultad de Economı´aEmpresa y TurismoUniversidad de La Laguna38071 La LagunaSpain Instituto Universitario de Ciencias Polı´ticas y Sociales Universidad de La Laguna38071 La LagunaSpain Instituto Universitario de Desarrollo Regional Universidad de La Laguna38071 La LagunaSpain

Isolated energy systems in archipelagos are characterized for having a great dependence on fossil sources due to isolation and territorial *** island of La Palma is situated on the northwest of the Canary Islands,and its electric system is very *** policies planned by local authorities are aimed to increase the share of renewable energies and the reduction of fossil ***,intermittence and the concentration of unmanageable renewable energies in few locations may hinder the operation of the *** order to solve these problems,energy storage plays an essential *** aim of this paper is to analyse the effects of the introduction of two possible alternatives as a way of energy storage:pumped hydro storage and electric *** this,we use a simulation model adapted to the features of La Palma,considering different *** show that,in the most favourable scenario,the installation of an additional 25 MW from renewables(more than double the current power),supported by 20 MW of pumped hydro storage and a fleet of 3361 electric vehicles,would allow the current share of renewables to increase from11%(in 2015)to 49%.Furthermore,this would mean a 26%reduction in CO2 emissions,10%in costs of generated k Wh and 19%in energy dependence.

关键词： Energy storage Electric vehicles Vehicle-to-grid Grid-for-vehicles Pumped-hydro energy storage Isolated systems