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Mango internal defect detection based on optimal wavelength selection method using NIR spectroscopy

Artificial Intelligence in Agriculture 2021年第1期5卷 43-51页

作者： Anitha Raghavendra d.s.guru Mahesh K.Rao Maharaja Research Foundation Maharaja Institute of TechnologyMysoreIndia department of studies in Computer science University of MysoreMysoreIndia

A non-destructive technique should be developed for performance analysis of mango fruits because the spongy tissue or internal defects could lower the quality of mango fruit and incur a lack of *** this study,wavelength selection methods were proposed to identify the range of wavelengths for the classification of defected and healthy mango *** selection methods were adopted here to achieve a significant selection of *** measure the goodness of themodel,the datasetwas collected using the NIR(Near Infrared)spectroscopy with wavelength ranging from 673 nm–1900 *** classification was performed using Euclidean distance measure both in the original feature space and in FLd(Fisher's Linear discriminant)transformed *** experimental results showed that the lower range wavelength(673 nm–1100 nm)was the efficient wavelength for the detection of internal defects in *** to express the effectiveness of the model,different feature selection techniques were investigated and found that the Fisher's criterion based technique appeared to be the best method for effective wavelength selection useful for classification of defected and healthy mango *** optimal wavelengths were found in the range of 702.72 nm to 752.34 nm using Fisher's criterionwith a classification accuracy of 84.5%.This study showed that NIR systemis a useful technology for the automaticmango fruit assessmentwhich has the potential to be used for internal defects in online sorting,easily distinguishable by those who do not meet minimum quality requirements.

关键词： Feature selection methods Fisher's linear discriminant analysis Mango internal defect detection NIR(near infrared spectroscopy)

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Hierarchical approach for ripeness grading of mangoes

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Artificial Intelligence in Agriculture 2020年第1期4卷 243-252页

作者： Anitha Raghavendra d.s.guru Mahesh K.Rao R.sumithra Maharaja Institute of Technology Mysore BelawadiS.R.Patna TalukMandya 571477India department of studies in Computer science ManasagangothriUniversity of MysoreMysore 570006India

Grading of fruits based on their ripeness has been a topic of research for the last two *** the ripened mangoes has become more of an art than science and is a challenging *** study aims at introducing a system to grademangoes with four classes based on their *** study was demonstrated through an extensive experimentation on a newly created dataset consisting of 981 images of Alphonsomango variety belonging to four classes viz.,under-ripen,perfectly ripen,over-ripen with internal defects and over-ripen without internal *** this study,a hierarchical approach was adopted to classify the mangoes into the four *** each stage of classification,L*a*b color space features were *** the purpose of classification at each stage,a number of classifiers and their possible combinationswere tried *** study revealed that,the support VectorMachine(sVM)classifier works better for classifyingmangoes into under-ripen,perfectly ripen and overripen while the thresholding classifier has a superior classification performance on over-ripen with internal defects and over-ripen without internal ***,to bring out the superiority of the hierarchical approach,a conventional single shot multi-class classification approach with sVMwas also *** results of the experimentation demonstrated that the hierarchical method with an accuracy of 88%outperforms the counterpart conventional single shot multi-class classification approach in addition to several existing contemporary models.

关键词： Alphonso mango L*a*b color space Threshold based classifier support vector machine

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Retrieval of flower videos based on a query with multiple species of flowers

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Artificial Intelligence in Agriculture 2021年第1期5卷 262-277页

作者： V.K.Jyothi V.N.Manjunath Aradhya Y.H.sharath Kumar d.s.guru department of studies in Computer science ManasagangothriUniversity of MysoreMysore 570006KarnatakaIndia department of Computer Applications JSS Science and technology UniversityMysoreKarnatakaIndia department of Information science and Engineering Maharaja Institute of Technology Mysore(MITM)Manday 571438KarnatakaIndia

searching,recognizing and retrieving a video of interest froma large collection of a video data is an instantaneous *** requirement has been recognized as an active area of research in computer vision,machine learning and pattern *** video recognition and retrieval is vital in the field of floriculture and *** this paper we propose a model for the retrieval of videos of ***,videos are represented with keyframes and flowers in keyframes are segmented from their ***,the model is analysed by features extracted from flower regions of the keyframe.A Linear discriminant Analysis(LdA)is adapted for the extraction of discriminating *** support VectorMachine(MsVM)classifier is applied to identify the class of the query *** have been conducted on relatively large dataset of our own,consisting of 7788 videos of 30 different species of flowers captured from three different ***,retrieval of flower videos is addressed by the use of a query video consisting of a flower of a single *** this work we made an attempt to develop a system consisting of retrieval of similar videos for a query video consisting of flowers of different species.

关键词： Flower region of interest(FRoI) Linear discriminant analysis(LdA) Retrieval of flower videos Multiclass support vector machine

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Robot-assisted uretero-enteric reimplantation for uretero-enteric anastomotic strictures following robot-assisted radical cystectomy: surgical approach and outcomes over two decades

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Asian Journal of Urology 2024年第3期11卷 384-390页

作者： Abdul Wasay Mahmood Grace Harrington Zhe Jing Qiang Li Ahmed A.Hussein Khurshid A.guru department of Urology Roswell Park Comprehensive Cancer CenterElm and Carlton StreetsBuffaloNew YorkNYUSA

Objective:We described the technique and outcomes of robot-assisted repair of uretero-enteric strictures(UEs)following robot-assisted radical cystectomy(RARC)and urinary ***:Retrospective review of our RARC database from November 2005 to August 2023 at Roswell Park Comprehensive Cancer center was *** who developed UEs and ultimately underwent robot-assisted uretero-enteric reimplantation(RUER)were *** method was used to compute the cumulative incidence recurrence rate of UEs after RUER.A multivariable regression model was used to identify variables associated with UEs ***:A total of 123(15%)out of 808 RARC patients developed UEs,of whom 52 underwent reimplantation(45 patients underwent RUER[n=55 cases]and seven patients underwent open ureteroenteric reimplantation).The median time from RARC to UEs was 4.4(interquartile range 3.0e7.0)months,and the median time between UEs and RUER was 5.2(interquartile range 3.2e8.9)*** 3-year recurrence rate after RUER is about 29%.On multivariable analysis,longer hospital stay(hazard ratio 1.37,95%confidence interval 1.16e1.61,ps associated with recurrent UEs after ***:RUER for UEs after RARC is feasible with durable outcomes although a notable subset of patients experienced postoperative complications and UEs recurrence.

关键词： stricture Cystectomy Reimplantation Robot-assisted

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Flexible ultra-thin super-resolution endoscopy

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science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 171-172页

作者： George s.d.Gordon department of Electrical and Electronic Engineering University of NottinghamNottingham NG7 2RDUK

In recent years, multimode fiber(MMF) has become an important tool for high-resolution endoscopic imaging in narrow channels(e.g., in the brain via needles or inside blood vessels) due to its high mode density and fine diameter, typically stacle to widespread deployment in applications is that realistic perturbations, including bending, twisting and changes in temperature, cause unacceptable image degradation.

关键词： fiber resolution typically

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Generalized polynomial chaos expansion by reanalysis using static condensation based on substructuring

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 819-836页

作者： d.LEE s.CHANG J.LEE department of Automotive Engineering Hanyang UniversitySeoul 04763Republic of Korea school of Mechanical Engineering Chungnam National UniversityDaejeon 34134Republic of Korea department of Mechanical Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This paper presents a new computational method for forward uncertainty quantification(UQ)analyses on large-scale structural systems in the presence of arbitrary and dependent random *** method consists of a generalized polynomial chaos expansion(GPCE)for statistical moment and reliability analyses associated with the stochastic output and a static reanalysis method to generate the input-output data *** the reanalysis,we employ substructuring for a structure to isolate its local regions that vary due to random *** allows for avoiding repeated computations of invariant substructures while generating the input-output data *** substructuring with static condensation further improves the computational efficiency of the reanalysis without losing ***,the GPCE with the static reanalysis method can achieve significant computational saving,thus mitigating the curse of dimensionality to some degree for UQ under high-dimensional *** numerical results obtained from a simple structure indicate that the proposed method for UQ produces accurate solutions more efficiently than the GPCE using full finite element analyses(FEAs).We also demonstrate the efficiency and scalability of the proposed method by executing UQ for a large-scale wing-box structure under ten-dimensional(all-dependent)random inputs.

关键词： forward uncertainty quantification(UQ) generalized polynomial chaos expansion(GPCE) static reanalysis method static condensation substructuring

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Ion heat transport in electron cyclotron resonance heated L-mode plasma on the T-10 tokamak

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Plasma science and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN M.R.NURGALIEV A.R.NEMETs I.A.ZEMTsOV s.d.sUNTsOV T.B.MYALTON d.s.sERGEEV N.A.sOLOVEV d.V.sARYCHEV d.V.RYJAKOV s.N.TUGARINOV N.N.NAUMENKO National Research Centre“Kurchatov Institute” Moscow 123182Russia Bauman Moscow state Technical University Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JsC“sOLAR” Minsk 220034Belarus

Anomalous ion heat transport is analyzed in the T-10 tokamak plasma heated with electron cyclotron resonance heating(ECRH) in second-harmonic extra-ordinary mode. Predictive modeling with empirical scaling for Ohmical heat conductivity shows that in ECRH plasmas the calculated ion temperature could be overestimated, so an increase of anomalous ion heat transport is required. To study this effect two scans are presented: over the EC resonance position and over the ECRH power. The EC resonance position varies from the high-field side to the low-field side by variation of the toroidal magnetic field. The scan over the heating power is presented with on-axis and mixed ECRH regimes. discharges with high anomalous ion heat transport are obtained in all considered regimes. In these discharges the power balance ion heat conductivity exceeds the neoclassical level by up to 10 times. The high ion heat transport regimes are distinguished by three parameters: the ratio Te/Ti, the normalized electron density gradient R/■, and the ion–ion collisionality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 results in values of normalized anomalous ion heat fluxes up to 10 times higher than in the low transport scenario.

关键词： tokamak L-mode electron cyclotron resonance heating ion heat transport

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The magnetosheath at high spectral resolution

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Earth and Planetary Physics 2024年第1期8卷 234-246页

作者： K.d.Küntz d.Koutroumpa W.R.dunn A.Foster F.s.Porter d.G.sibeck B.Walsh The Henry A.Rowland department of Physics and Astronomy Johns Hopkins University3701 San Martin DriveBaltimoreMD21218USA NAsA Goddard space Flight Center 8800 Greenbelt RoadGreenbeltMD 20771USA LATMOs-OVsQ CNRSUVSQ Paris-SaclaySorbonne Université11 Boulevard d’Alembert78280GuyancourtFrance department of Physics and Astronomy University College LondonLondonUK The Centre for Planetary science at UCL/Birkbeck Gower StreetLondon WC1E 6BTUK Center for Astrophysics Harvard University&Smithsonian Institution60 Garden StreetCambridgeMA 02138USA Center for space Physics Boston University110 Cummington MallBostonMAUSA

While we eagerly anticipate sMILE’s(solar wind Magnetosphere Ionosphere Link Explorer)unprecedented X-ray observations of the Earth’s magnetosheath and the initiation of a new era of magnetospheric research,it seems appropriate to look ahead to the abilities of the next generation of astrophysics *** these,the Line Emission Mapper(LEM),a large aperture micro-calorimeter based mission,is currently planned to be able to observe the magnetosheath at high spectral resolution(~2 eV).With a field of view of~30′,LEM will allow higher spatial resolution and higher cadence measurement of the motion of a very small portion of the magnetopause over relatively short periods of time(multiple hours),complementing sMILE’s global ***’s strength is its spectral *** will be able to measure the abundance of a broad range of elements and ionization states,many of which are inaccessible to current in situ instruments,and will be able to separate the emission from the magnetosheath from the emission from the cosmic X-ray background using the difference in their relative velocities.

关键词： magnetosheath charge exchange solar wind abundances

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The dorsal root ganglion as a target for neurorestoration in neuropathic pain

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Neural Regeneration Research 2024年第2期19卷 296-301页

作者： Guillermo Estivill-Torrús Ana Belen Martínez-Padilla Lourdes sánchez-salido Anne Baron-Van Evercooren Beatriz García-díaz Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina(IBIMA Plataforma BIONANd) MálagaSpain Unidad Clínica de Neurociencias Hospital Regional Universitario de MálagaMálagaSpain departamento de Biología Molecular y Bioquímica Universidad de MálagaSpain sorbonne Université Institut du Cerveau-Paris Brain Institute-ICMINSERMCNRSAP-HPHôpital Pitié-SalpêtrièreParisFrance

Neuropathic pain is a severe and chronic condition widely found in the general *** reason for this is the extensive variety of damage or diseases that can spark this unpleasant constant feeling in *** the processing of pain,the dorsal root ganglia constitute an important region where dorsal root ganglion neurons play a crucial role in the transmission and propagation of sensory electrical ***,the dorsal root ganglia have recently exhibited a regenerative capacity that should not be neglected in the understanding of the development and resolution of neuropathic pain and in the elucidation of innovative ***,we will review the complex interplay between cells(satellite glial cells and inflammatory cells)and factors(cytokines,neurotrophic factors and genetic factors)that takes place within the dorsal root ganglia and accounts for the generation of the aberrant excitation of primary sensory neurons occurring in neuropathic *** importantly,we will summarize an updated view of the current pharmacologic and nonpharmacologic therapies targeting the dorsal root ganglia for the treatment of neuropathic pain.

关键词： cytokines dorsal root ganglia genetic factors neuropathic pain neurotrophic factors pharmacologic and nonpharmacologic therapies satellite glial cells sensory neurons

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development and testing of a high-power s-band klystron at BINP sB RAs

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Nuclear science and Techniques 2024年第7期35卷 58-67页

作者： A.Levichev A.Barnyakov s.samoylov d.Nikiforov V.Ivanov M.Arsentyeva d.Chekmenev O.Pavlov I.Pivovarov Budker Institute of Nuclear Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk state University Pirogova Str.2NovosibirskRussia630090

This paper details the development and testing of the first working prototype of the s-band high-power klystron,accomplished at the Budker Institute of Nuclear Physics,siberian Branch,Russian Academy of sciences(BINP sB RAs).Upon testing,the klystron demonstrated the following parameters:an operating frequency of 2856 MHz and a peak power output of 50 *** paper presents the klystron's design,its constituent units,and pertinent processing procedures,along with discussions on the measurement of its parameters.

关键词： Klystron Linear accelerator Electron beam

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