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Anomaly detection on displacement rates and deformation pattern features using tree-based algorithm in Japan and Indonesia

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Geodesy and Geodynamics 2023年第2期14卷 150-162页

作者： adi Wibowo Satriawan Rasyid Purnama Cecep Pratama Leni Sophia Heliani David P.Sahara Sidik Tri Wibowo Department of Informatics Universitas Diponeegoro UniversitySemarangIndonesia Department of Geodetic Engineering Universitas Gadjah MadaYogyakartaIndonesia Global Geophysics Research Group Faculty of Mining and Petroleum EngineeringInstitute of Technology BandungBandungIndonesia Geospatial Information Agency Indonesia

Research on strain anomalies and large earthquakes based on temporal and spatial crustal activities has been rapidly growing due to data availability, especially in Japan and Indonesia. However, many research works used local-scale case studies that focused on a specific earthquake characteristic using knowledgedriven techniques, such as crustal deformation analysis. In this study, a data-driven-based analysis is used to detect anomalies using displacement rates and deformation pattern features extracted from daily global navigation satellite system(GNSS) data using a machine learning algorithm. The GNSS data with188 and 1181 continuously operating reference stations from Indonesia and Japan, respectively, are used to identify the anomaly of recent major earthquakes in the last two decades. Feature displacement rates and deformation patterns are processed in several window times with 2560 experiment scenarios to produce the best detection using tree-based algorithms. Tree-based algorithms with a single estimator(decision tree), ensemble bagging(bagging, random forest and Extra Trees), and ensemble boosting(AdaBoost, gradient boosting, LGBM, and XGB) are applied in the study. The experiment test using realtime scenario GNSSdailydatareveals high F1-scores and accuracy for anomaly detection using slope windowing 365 and 730 days of 91-day displacement rates and then 7-day deformation pattern features in tree-based algorithms. The results show the potential for medium-term anomaly detection using GNSS data without the need for multiple vulnerability assessments.

关键词： Anomaly GNSS Displacement rates Deformation pattern Tree-based algorithm

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Polarimeter–interferometer diagnostic using terahertz solid-state sources for fluctuation measurements on Keda Torus e Xperiment(KTX)

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Plasma Science and Technology 2024年第3期26卷 61-65页

作者：汪兴康毛文哲谢锦林兰涛李弘刘阿娣周楚温晓辉卫子安吴捷陈晨刘东宽饶贤昊蔡虎邬佳仁邓鹏刘海庆丁卫星庄革刘万东 School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China

A multi-channel polarimeter-interferometer has been developed on the Keda Torus eXperiment(KTX)for the study of equilibrium dynamics and internal magnetic fluctuations.A three-wave technique based on terahertz solid-state sources(-650 GHz)is applied for simultaneous measurements of electron density and Faraday rotation *** output power of the microwave source is 2 *** rotation effect using a rotating wave plate is tested with phase noise less than 0.8°,and the density phase noise is less than 0.9°.Measurement of Faraday rotation angle and density for discharges on KTX have demonstrated high sensitivity to internal MHD activities.

关键词： plasma diagnostics interferometry terahertz polarimeter

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Estimation of plasma parameters of X-pinch with time-resolved x-ray spectroscopy

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Matter and Radiation at Extremes 2023年第3期8卷 34-46页

作者： Seunggi ham Jonghyeon Ryu Hakmin Lee Sungbin Park Y.-C.Ghim Y.S.Hwang Kyoung-Jae Chung Department of Energy Systems Engineering Seoul National UniversitySeoul 08826South Korea Department of Nuclear and Quantum Engineering KAISTDaejeon 34141South Korea

We estimate the parameters of a Cu plasma generated by an X-pinch by comparing experimentally measured x-rays with synthetic data.A filtered absolute extreme ultraviolet diode array is used to measure time-resolved x-ray spectra with a spectral resolution of∼1 keV in the energy range of 1–10 *** synthetic spectra of Cu plasmas with different electron temperatures,electron densities,and fast electron fractions are calculated using the FLYCHK *** quantitative comparison with the measured spectrum,two x-ray power ratios with three different spectral ranges are *** observe three x-ray bursts in X-pinch experiments with two Cu wires conducted on the SNU X-pinch at a current rise rate of∼0.2 kA/*** of the spectra reveals that the first burst comprises x-rays emitted by hot spots and electron beams,with characteristics similar to those observed in other *** second and third bursts are both generated by longlived electron beams formed after the neck structure has been completely *** the second burst,the formation of the electron beam is accompanied by an increase in the electron density of the background ***,the long-lived electron beams generate the additional strong x-ray bursts while maintaining a plasma channel in the central region of the ***,they emit many hard x-rays(HXRs),enabling the SNU X-pinch to be used as an HXR *** study confirms that the generation of long-lived electron beams is crucial to the dynamics of X-pinches and the generation of strong HXRs.

关键词： resolved parameters absolute

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A pilot prospective prevalence study of chronic rhinosinusitis associated with inflammatory bowel disease

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2022年第4期8卷 339-344页

作者： India Dhillon Jennifer ham Ximena Maul Gregory Rosenfeld Andrew Thamboo Division of Otolaryngology St.Paul's Sinus CentreUniversity of British ColumbiaVancouverBritish ColumbiaCanada Division of Gastroenterology University of British ColumbiaVancouverBritish ColumbiaCanada

Background:Inflammatory bowel disease(IBD)is characterized by chronic inflammation of the gastrointestinal ***-intestinal manifestations such as pulmonary diseases have been *** rhinosinusitis(CRS),an inflammatory condition of the sinonasal mucosa,has been associated with several lung *** the relationship between lung and intestinal pathologies,and lung and sinus pathologies,we aimed to determine the prevalence of IBD among CRS ***:Pilot prevalence ***-two CRS patients were screened for IBD symptoms from October 2018 to January ***-reported disease symptoms and overall quality of life were evaluated using the Sino-Nasal Outcome Test 22(SNOT-22),Short Inflammatory Bowel Disease Questionnaire(SIBDQ),and EuroQol 5 Dimension 5 Level(EQ-5D-5L)*** Modified Lund-Kennedy(MLK)endoscopic and Lund-Mackay(LM)grading systems were used to confirm CRS *** who reported subjective symptoms of IBD were referred to a gastroenterologist clinic for further ***:Twenty of the 92(20.2%,95%CI:12.6%-29.8%)CRS patients reported symptoms of IBD and four individuals(4.26%,95%CI:1.17%-10.50%)were sub-sequently diagnosed with *** to patients without IBD symptoms(n=72),those with symptoms(n=20)reported significantly worse SNOT-22(P=0.002),SIBDQ(Padian *** pilot study suggests that CRS with IBD is associated with lower quality of *** cross-sectional studies with larger sample sizes are required.

关键词： chronic rhinosinusitis microbiome Modified Lund–Kennedy quality of life Sino-Nasal Outcome Test 22(SNOT-22)

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A Particle Swarm Optimization Based Deep Learning Model for Vehicle Classification

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Computer Systems Science & Engineering 2022年第1期40卷 223-235页

作者： adi Alhudhaif Ammar Saeed Talha Imran Muhammad Kamran Ahmed S.Alghamdi Ahmed O.Aseeri Shtwai Alsubai Department of Computer Science College of Computer Engineering and Sciences in Al-KharjPrince Sattam bin Abdulaziz UniversityP.O.Box 151Al-Kharj11942Saudi Arabia Department of Computer Science COMSATS University IslamabadWah Cantt47010Pakistan University of Jeddah College of Computer Science and Engineering Department of CybersecurityJeddah21959Saudi Arabia

Image classification is a core field in the research area of image proces-sing and computer vision in which vehicle classification is a critical *** purpose of vehicle categorization is to formulate a compact system to assist in real-world problems and applications such as security,traffic analysis,and self-driving and autonomous *** recent revolution in the field of machine learning and artificial intelligence has provided an immense amount of support for image processing related problems and has overtaken the conventional,and handcrafted means of solving image analysis *** this paper,a combina-tion of pre-trained CNN GoogleNet and a nature-inspired problem optimization scheme,particle swarm optimization(PSO),was employed for autonomous vehi-cle *** model was trained on a vehicle image dataset obtained from Kaggle that has been suitably *** trained model was classified using several classifiers;however,the Cubic SVM(CSVM)classifier was found to out-perform the others in both time consumption and accuracy(94.8%).The results obtained from empirical evaluations and statistical tests reveal that the model itself has shown to outperform the other related models not only in terms of accu-racy(94.8%)but also in terms of training time(82.7 s)and speed prediction(380 obs/sec).

关键词： Vehicle classification intelligent transport system deep learning constrained machine learning particle swarm optimization CNN GoogleNet

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The role of quick Sepsis-related Organ Failure Assessment score as simple scoring system to predict Fournier gangrene mortality and the correlation with Fournier’s Gangrene Severity Index: Analysis of 69 patients

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Asian Journal of Urology 2023年第2期10卷 201-207页

作者： Bambang S.Noegroho Kuncoro adi Akhmad Mustafa Rais Syaeful Haq Zola Wijayanti Jason Liarto Urology Department Hasan Sadikin Academic Medical CenterUniversitas PadjadjaranBandungIndonesia

Objective:Fournier’s gangrene is a rare but life-threatening infection disease with high mortality *** quick Sepsis-related Organ Failure Assessment(qSOFA)is a new and simpler scoring system that may identify patients with suspected infection who are at greater risk for a poor *** purpose of this study was to find out role of qSOFA in determining prognosis of Fournier’s gangrene ***:This study is a case control with retrospective review of Fournier’s gangrene patients treated at Hasan Sadikin Hospital from January 2013 to December 2017 who met inclusion *** were divided into two groups according to qSOFA score as high qSOFA(2-3)and low qSOFA(0-1).Results:From 69 patients,the mortality rate was 24.6%.The sensitivity of qSOFA score to predict mortality was 88.2%;the specificity was 94.2%;positive predictive value was 83.3%;negative predictive value was 96.1%;positive likelihood ratio was 15.2;negative likelihood ratio was 0.12;and the area under the receiver operating characteristic curve of qSOFA was 94.2%.There was significant association between qSOFA scale and mortality with p-value of *** qSOFA score has strong positive correlation with Fournier’s Gangrene Severity Index(p<0.0001,r=0.704).Conclusion:qSOFA scoring system has a high prognostic value and can be used to determine prognosis of Fournier’s gangrene patients.

关键词： Fournier gangrene Quick Sepsis-related Organ Failure Assessment Prognosis Organ failure Severity index

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Proxy-Based Hierarchical Distributed Mobility Management for Tactical Networks

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Computers, Materials & Continua 2022年第2期70卷 2381-2399页

作者： Myoung-hun Han Bong-Soo Roh Kyungwoo Kim Dae-Hoon Kwon Jae-Hyun ham KyungHyun Yoon Sanghyun Seo Agency for Defense Development Daejeon34186Korea Department of Computer Science and Engineering Chung-Ang UniversitySeoul06974Korea College of Art&Technology Chung-Ang UniversityAnseong17546Korea

An important requirement in a military domain is a highly reliable mobility management method,especially when components of the networks aremoving in tactical network *** increase reliability,themobility management technology of the tactical network should be able to reflect the characteristics of the tactical network,such as a limited environment,failure,and hierarchical unit *** this paper,we propose a proxy-based hierarchical distributedmobilitymanagement scheme,which is highly focused on tactical *** the characteristics of tactical networks,the proposed scheme is composed of the following:1)a proxy-based method,2)a distributed mobility management method that synchronizes a mobility database between entities,and 3)a method of managing mobility by dividing the tactical network into upper and lower *** analysis and modeling and simulation results demonstrate that the method outperforms the existing state-of-the-art method in overcoming entity failure,handover cost,and delay in tactical environments.

关键词： Mobility management tactical networks PMIP DMM

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Bragg accelerator optimization

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High Power Laser Science and Engineering 2014年第3期2卷 37-45页

作者： adi Hanuka Levi Schchter Department of Electrical Engineering Technion–Israel Institute of Technology

We present the first steps of a design of the optimal parameters for a full Bragg X-Ray free electron laser(BX-FEL).aiming towards a future source of coherent X-ray radiation,operating in the strong Compton regime,we envisage the system to be the seed for an advanced light source or compact medical X-ray *** we focus on the design of the accelerator parameters: maximum gradient,optimal accelerated charge,maximum efficiency,and ‘wake coefficient',which relates to the decelerating electric field generated due to the motion of a charged-line or train of ***,we demonstrate that the maximum efficiency has optimal value and given the fluence of the materials,the maximum accelerated charge in the train is *** two results might be important in any future design.

关键词： Bragg wake-field Compton scattering energy conversion efficiency fluence light source medical accelerator

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The distinct morphological phenotypes of Southeast Asian aborigines are shaped by novel mechanisms for adaptation to tropical rainforests

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National Science Review 2022年第3期9卷 85-95页

作者： Xiaoming Zhang Qi Liu Hui Zhang Shilei Zhao Jiahui Huang Tuot Sovannary Long Bunnath Hong Seang Aun ham Samnom Bing Su Hua Chen State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Sciences Center for Excellence in Animal Evolution and Genetics Chinese Academy of Sciences CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences China National Center for Bioinformation School of Future Technology and Sino-Danish College University of Chinese Academy of Sciences Kunming College of Life Science University of Chinese Academy of Sciences Department of Geography and Land Management Royal University of Phnom Penh Capacity Development Facilitator for Handicap International Federation and Freelance Research

Southeast Asian aborigines, the hunter-gatherer populations living in tropical rainforests, exhibit distinct morphological phenotypes, including short stature, dark skin, curly hair and a wide and snub nose. The underlying genetic architecture and evolutionary mechanism of these phenotypes remain a long-term mystery. We conducted whole genome deep sequencing of 81 Cambodian aborigines from eight ethnic groups. Through a genome-wide scan of selective sweeps, we discovered key genes harboring Cambodian-enriched mutations that may contribute to their phenotypes, including two hair morphogenesis genes(TCHH and TCHHL1), one nasal morphology gene(PAX3) and a set of genes(such as ENTPD1-AS1) associated with short stature. The identified new genes and novel mutations suggest an independent origin of the distinct phenotypes in Cambodian aborigines through parallel evolution, refuting the long-standing argument on the common ancestry of these phenotypes among the worldwide rainforest hunter-gatherers. Notably, our discovery reveals that various types of molecular mechanisms, including antisense transcription and epigenetic regulation, contribute to human morphogenesis, providing novel insights into the genetics of human environmental adaptation.

关键词： Cambodian aborigines genomic polymorphism positive selection parallel evolution environmental adaptation morphogenesis

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Deep learning acceleration of multiscale superresolution localization photoacoustic imaging

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Light(Science & Applications) 2022年第6期11卷 1166-1177页

作者： Jongbeom Kim Gyuwon Kim Lei Li Pengfei Zhang Jin Young Kim Yeonggeun Kim Hyung ham Kkim Lihong V.Wang Seungchul Lee Chulhong Kim Departments of Electrical Engineering Mechanical EngineeringConvergence IT Engineeringand Interdisciplinary Bioscience and BioengineeringGraduate School of Artificial IntelligenceMedical Device Innovation CenterPohang University of Science and Technology(POSTECH)77 Cheongam-roNam-guPohangGyeongbuk 37673Republic of Korea Caltech Optical Imaging Laboratory Andrew and Peggy Cherng Department of Medical EngineeringDepartment of Electrical EngineeringCalifornia Institute of Technology1200 E.California Blvd.MC 138-78PasadenaCA 91125USA School of Precision Instruments and Optoelectronics Engineering Tianjin University92 Weijin RoadNankai DistrictTianjin 300072China Opticho 532CHANGeUP GROUND87 Cheongam-roNam-guPohangGyeongsangbuk 37673Republic of Korea

A superresolution imaging approach that localizes very small targets,such as red blood cells or droplets of injected photoacoustic dye,has significantly improved spatial resolution in various biological and medical imaging ***,this superior spatial resolution is achieved by sacrificing temporal resolution because many raw image frames,each containing the localization target,must be superimposed to form a sufficiently sampled high-density superresolution ***,we demonstrate a computational strategy based on deep neural networks(DNNs)to reconstruct high-density superresolution images from far fewer raw image *** localization strategy can be applied for both 3D label-free localization optical-resolution photoacoustic microscopy(OR-PAM)and 2D labeled localization photoacoustic computed tomography(PACT).For the former,the required number of raw volumetric frames is reduced from tens to fewer than *** the latter,the required number of raw 2D frames is reduced by 12 ***,our proposed method has simultaneously improved temporal(via the DNN)and spatial(via the localization method)resolutions in both label-free microscopy and labeled ***-learning powered localization PA imaging can potentially provide a practical tool in preclinical and clinical studies requiring fast temporal and fine spatial resolutions.

关键词： Deep frames networks

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