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Anomaly Based Camera Prioritization in Large Scale Surveillance Networks

Computers, Materials & Continua 2022年第2期70卷 2171-2190页

作者： Altaf Hussain Khan Muhammad Hayat Ullah Amin Ullah Ali Shariq Imran mi young Lee Seungmin Rho Muhammad Sajjad Department of Software Sejong University143-747SeoulKorea Digital Image Processing Lab Islamia College Peshawar25000Pakistan Color Lab Department of Computer ScienceNorwegian University of Science and Technology(NTNU)2815GjovikNorway CORIS Institute Oregon State University97331OregonUSA

Digital surveillance systems are ubiquitous and continuously generate massive amounts of data,and manual monitoring is required in order to recognise human activities in public *** surveillance systems that can automatically identify normal and abnormal activities are highly desirable,as these would allow for efficient monitoring by selecting only those camera feeds in which abnormal activities are *** paper proposes an energy-efficient camera prioritisation framework that intelligently adjusts the priority of cameras in a vast surveillance network using feedback from the activity recognition *** proposed system addresses the limitations of existing manual monitoring surveillance systems using a three-step *** the first step,the salient frames are selected from the online video stream using a frame differencing method.A lightweight 3D convolutional neural network(3DCNN)architecture is applied to extract spatio-temporal features from the salient frames in the second ***,the probabilities predicted by the 3DCNN network and the metadata of the cameras are processed using a linear threshold gate sigmoid mechanism to control the priority of the *** proposed system performs well compared to state-of-theart violent activity recognition methods in terms of efficient camera prioritisation in large-scale surveillance *** experiments and an evaluation of activity recognition and camera prioritisation showed that our approach achieved an accuracy of 98%with an F1-score of 0.97 on the Hockey Fight dataset,and an accuracy of 99%with an F1-score of 0.98 on the Violent Crowd dataset.

关键词： Camera prioritisation surveillance networks convolutional neural network computer vision deep learning resource-constrained device violent activity recognition

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Adaptive thermo-fluid moving boundary computations for interfacial dynamics

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Acta Mechanica Sinica 2012年第4期28卷 999-1021页

作者： Chih-Kuang Kuan Jaeheon sim Wei Shyy University of michigan Ann ArborMIUSA Hong Kong University of Science and Technology

In this study, we present adaptive moving boundary computation technique with parallel implementation on a distributed memory multi-processor system for large scale thermo-fluid and interfacial flow computations. The solver utilizes Eulerian-Lagrangian method to track moving （Lagrangian） interfaces explicitly on the stationary （Eulerian） Cartesian grid where the flow fields are computed. We address the domain decomposition strategies of Eulerian- Lagrangian method by illustrating its intricate complexity of the computation involved on two different spaces inter- actively and consequently, and then propose a trade-off ap- proach aiming for parallel scalability. Spatial domain decomposition is adopted for both Eulerian and Lagrangian do- main due to easy load balancing and data locality for mini- mum communication between processors. In addition, parallel cell-based unstructured adaptive mesh refinement （AMR） technique is implemented for the flexible local refinement and even-distributed computational workload among processors. Selected cases are presented to highlight the computa- tional capabilities, including Faraday type interfacial waves with capillary and gravitational forcing, flows around varied geometric configurations and induced by boundary conditions and/or body forces, and thermo-fluid dynamics with phase change. With the aid of the present techniques, large scale challenging moving boundary problems can be effectively addressed.

关键词： Moving boundary Eulerian-Lagrangian method Parallel adaptive mesh refinement

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Robust Counting in Overcrowded Scenes Using Batch-Free Normalized Deep ConvNet

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Computer Systems Science & Engineering 2023年第9期46卷 2741-2754页

作者： Sana Zahir Rafi Ullah Khan Mohib Ullah Muhammad Ishaq Naqqash Dilshad Amin Ullah mi young Lee Institute of Computer Sciences and Information Technology(ICS/IT) The University of AgriculturePeshawar25130Khyber PakhtunkhwaPakistan Department of Convergence Engineering for Intelligent Drone Sejong UniversitySeoul05006Korea Collaborative Robotics and Intelligent Systems(CoRIS)Institute Oregon State UniversityORUSA Department of Software Sejong UniversitySeoul05006Korea

The analysis of overcrowded areas is essential for flow monitoring,assembly control,and *** counting’s primary goal is to calculate the population in a given region,which requires real-time analysis of congested scenes for prompt reactionary *** crowd is always unexpected,and the benchmarked available datasets have a lot of variation,which limits the trained models’performance on unseen test *** this paper,we proposed an end-to-end deep neural network that takes an input image and generates a density map of a crowd *** proposed model consists of encoder and decoder networks comprising batch-free normalization layers known as evolving normalization(EvoNorm).This allows our network to be generalized for unseen data because EvoNorm is not using statistics from the training *** decoder network uses dilated 2D convolutional layers to provide large receptive fields and fewer parameters,which enables real-time processing and solves the density drift problem due to its large receptive *** benchmark datasets are used in this study to assess the proposed model,resulting in the conclusion that it outperforms conventional models.

关键词： Artificial intelligence deep learning crowd counting scene understanding

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Epimedium koreanum Nakai and its main constituent icariin suppress lipid accumulation during adipocyte differentiation of 3T3-L1 preadipocytes

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Chinese Journal of Natural Medicines 2016年第9期14卷 671-676页

作者： HAN Yunk-Yung SONG mi-young HWANG min-Sub HWANG Ji-Hye PARK Yong-Ki JUNG Hyo-Won 无 Korean Medicine R&D Center College of Korean MedicineDongguk UniversityGyeongju 38066Republic of Korea department of rehabilitation medicine of korean medicine college of korean medicinedongguk universityGyeongju 38066Republic of Korea Department of Acupuncture&Moxibustion College of Korean MedicineDongguk UniversityGyeongju 38066Republic of Korea Department of Herbology College of Korean MedicineDongguk UniversityGyeongju 38066Republic of Korea

Obesity is associated with a number of metabolic abnormalities such as type 2 diabetes and has become a major health problem worldwide. In the present study, we investigated the effects of Epimedium koreanum Nakai(Herba Epimedii, HE) and its main constituent icariin on the adipocyte differentiation in 3T3-L1 preadipocytes. HE extract and icariin significantly reduced lipid accumulation and suppressed the expressions of PPARγ, C/EBPα, and SREBP-1c in 3T3-L1 adipocytes. They also inhibited fatty acid synthase(FAS), acyl-Co A synthase(ACS1), and perilipin. Moreover, HE extract and icariin markedly increased the phosphorylation of AMPK. These results indicated that HE extract and icariin can inhibit the adipocyte differentiation through downregulation of the adipogenic transcription factors, suggesting that HE containing icariin may be used as a potential therapeutic agent in the treatment and prevention of obesity.

关键词： Epimedium koreanum Nakai Herba Epimedii Icariin 3T3-L1 cells Obesity

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An Integrated Carbon Dioxide Capture and Methanation Process

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CCS Chemistry 2024年第5期6卷 1174-1183页

作者： Xiaochen Zhang Mengzhu Li Xingwu Liu Ang Li Yuchen Deng mi Peng Yu Zhang Charlotte Vogt Matteo Monai Junxian Gao Xuetao Qin Yao Xu Qiaolin Yu Meng Wang Guofu Wang Zheng Jiang Xiaodong Han Casper Brady Wei-Xue Li Wu Zhou Jin-Xun Liu Bingjun Xu Bert M.Weckhuysen Ding Ma Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 China Academy of Aerospace Science and Innovation Beijing 100088 National Energy Center for Coal to Liquids Synfuels China Co.Ltd.Beijing 101400 Beijing Key Laboratory of microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing Inorganic Chemistry and Catalysis group Institute for Sustainable and Circular Chemistry and Debye Institute for Nanomaterials ScienceFaculty of ScienceUtrecht University3584 CG Utrecht State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001 Shanghai Synchrotron Radiation Facility Zhangjiang LadShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210 Center for Catalytic Science and Technology University of DelawareNewarkDelaware 19716 Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026 Hefei National Laboratory University of Science and Technology of ChinaHefei 230088 School of Physical Sciences CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of SciencesBeijing 100049

Reducing the ever-growing level of CO_(2)in the atmosphere is critical for the sustainable development of human society in the context of global *** of the capture and upgrading of CO_(2)is,therefore,highly desirable since each process step is costly,both energetically and ***,we report a CO_(2)direct air capture(DAC)and fixation process that produces *** concentrations of CO_(2)(∼400 ppm)in the air are captured by an aqueous solution of sodium hydroxide to form *** carbonate is subsequently hydrogenated to methane,which is easily separated from the reaction system,catalyzed by TiO2-supported Ru in the aqueous phase with a selectivity of 99.9%among gas-phase *** concurrent regenerated hydroxide,in turn,increases the alkalinity of the aqueous solution for further CO_(2)capture,thereby enabling this one-ofits-kind continuous CO_(2)capture and methanation *** simulations demonstrate the energy feasibility of this CO_(2)DAC and methanation process,highlighting its promise for potential largescale applications.

关键词： CO_(2)capture and methanation process sodium hydroxide carbonate Ru/TiO_(2) catalytic mechanism CO_(2)activation and hydrogenation

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Outdoor cultivation of microalgae in a coal-fired power plant for conversion of flue gas CO_(2)into microalgal direct combustion fuels

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Systems microbiology and Biomanufacturing 2021年第1期1卷 90-99页

作者： young Joon Sung Jeong Seop Lee Hong Ki Yoon Hyunjin Ko Sang Jun sim Department of Chemical and Biological Engineering Korea University145Anam-roSeongbuk-guSeoul 02841Republic of Korea Korea Western Power Co. Ltd.285Jungang-roTaean-eupTaean-gunChungcheongnam-do 32140Republic of Korea

microalgae have piqued renewed interest as a sustainable biofuel feedstock owing to their high CO_(2)conversion ***,the major limitation of microalga-based biofuel production is low *** this study,CO_(2)in flue gas emitted from the coal-fired power plants was fixed through mass microalgal cultivation using only sunlight as an energy *** minimize the cost and energy required to supply the flue gas and efficiently utilize the microalgal biomass,a polycarbonate(PC)greenhouse and polymeric photobioreactors were installed near the power plant *** different microalgal strains(Chlamydomonas reinhardtii,Chlorella sorokiniana,Neochloris oleoabundans,and Neochloris oleoabundans#13)were subjected to semi-continuous culturing for 1 *** maximum biomass productivity was achieved by the ***-dans#13 strain(0.703 g L^(−1)day^(−1)).Additionally,polymerase chain reaction analysis revealed that the individual microalgal culture was not cross-contaminated with other microalgal cultures in this cultivation system,owing to the structural proper-ties of photobioreactor comprising individual *** lipid content and calorific productivity of ***#13 biomass were 45.70%and 3.553 kJ L^(−1)day^(−1),respectively,which indicate satisfactory performance of biomass as a direct combustion *** CO_(2)fixation rate,which was calculated based on the carbon content in the biomass,was 0.309 g CO_(2)L^(−1)day^(−1).Therefore,large amounts of CO_(2)can be reduced using the large-scale microalgal cultivation system,which enables efficient biological CO_(2)conversion and maximizes microalgal biomass utilization.

关键词： microalgae Coal-fired power plant CO_(2)conversion process Direct combustion fuel

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Influence of glass-based dental ceramic type and thickness with identical shade on the light transmittance and the degree of conversion of resin cement

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International Journal of Oral Science 2018年第1期10卷 44-49页

作者： Soram Oh Su-mi Shin Hyun-Jung Kim Janghyun Paek Sung-Joon Kim Tai Hyun Yoon Sun-young Kim Department of Conservative Dentistry Graduate School Kyung Hee University Seoul Korea Department of Prosthodontics School of Dentistry Kyung Hee University Seoul Korea Department of Dentistry School of Medicine Jeju National University Jeju Korea Department of Physics Korea University Seoul Korea and SDepartment of Conservative Dentistry Dental Research Institute School of Dentistry Seoul National University Seoul Korea

The purpose of this study was to assess the influence of the types and thicknesses of glass ceramic plates on light transmittance and compare the degrees of conversion(DC) of resin cement under the ceramic materials. Three ceramic plates with thicknesses of 0.5, 1.0, 2.0, and 4.0 mm were fabricated from each of five commercial ceramic blocks in shade A2: high-translucency and low-translucency IPS Empress CAD(EmpHT and EmpLT); high-translucency and low-translucency IPS *** CAD(EmxHT and EmxLT); and Vita Mark Ⅱ(Vita). The translucency parameter was obtained using a colorimeter. The light transmittance rate was measured using a photodetector attached to an optical power meter. The DC of a resin cement(Variolink N) underneath the ceramic plates was examined by Fourier transform infrared spectroscopy. The translucency parameter, light transmittance rate, and DC showed significant differences by ceramic type and thickness(P mission and DCs, and the EmxLT showed the least light transmission and the lowest DCs. The high-translucency Empress showed significantly higher DCs than the low-translucency types(P 0.05). Both type and thickness of the glass ceramics significantly influenced the light transmittance and DC of the light-cured resin cement beneath the ceramic of the same shade.

关键词： miCROTENSILE BOND STRENGTH MECHANICAL-PROPERTIES LUTING AGENT CURING MODE POLYMERIZATION TRANSmiSSION TRANSLUCENCY COMPOSITE PORCELAIN HARDNESS

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Gallstone spillage caused by spontaneously perforated hemorrhagic cholecystitis

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World Journal of Gastroenterology 2007年第41期13卷 5525-5526页

作者： young Chul Kim mi-Suk Park Yong Eun Chung Joon Suk Lim Myeong-Jin Kim Ki Whang Kim Department of Diagnostic Radiology and Institute of Gastroenterology Severance HospitalResearch Institute of Radiological ScienceYonsei University College of MedicineSeoulSouth Korea

There are occasional incidences of gallstone spillage during laparoscopic cholecystectomy,and there have been frequent reports on such a topic in the literature. To the best of our knowledge,however,there have been no reports about spilled stones caused by spontaneously perforated hemorrhagic cholecystitis. Here,we report the radiologic findings of spilled stones caused by spontaneously perforated hemorrhagic cholecystitis in a 55-year-old man.

关键词： Gallbladder perforation Gallstone spillage, Hemorrhagic cholecystitis

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Assessing significant fibrosis using imaging-based elastography in chronic hepatitis B patients: Pilot study

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World Journal of Gastroenterology 2019年第25期25卷 3256-3267页

作者： Hee Sun Park Won Hyeok Choe Hye Seung Han mi Hye Yu young Jun Kim Sung Il Jung Jeong Han Kim So young Kwon Department of Radiology Konkuk University School of MedicineSeoul 05030South Korea Department of Internal Medicine Konkuk University School of MedicineSeoul 05030South Korea Department of Pathology Konkuk University School of MedicineSeoul 05030South Korea

BACKGROUND Accurate detection of significant fibrosis(fibrosis stage 2 or higher on the METAVIR scale)is important especially for chronic hepatitis B(CHB)patients with high viral loads but with normal or mildly elevated alanine aminotransferase(ALT)levels because the presence of significant fibrosis is accepted as the indication for antiviral *** biopsy is the reference standard for diagnosing significant fibrosis,but it is an invasive ***,noninvasive imaging-based measurements,such as magnetic resonance elastography(MRE)or two-dimensional shear-wave elastography(2DSWE),have been proposed for the quantitative assessment of liver *** To explore MRE and 2D-SWE to identify fibrosis stage,and to compare their performance with that of serum-based *** The study enrolled 63 treatment-na?ve CHB patients with high viral loads but with normal or mildly elevated ALT levels who underwent liver biopsy before a decision was made to initiate antiviral *** and 2D-SWE were performed,and serum-based indices,such as FIB-4 and aspartate transaminase to platelet ratio index(APRI),were *** diagnostic performances of MRE,2D-SWE,FIB-4,and APRI for assessing significant fibrosis(≥F2)and cirrhosis(F4)were evaluated with liver histology as the reference standard,using receiver operating characteristic *** The liver fibrosis stage was F0/F1 in 19,F2 in 14,F3 in 14,and F4 in 16 patients,*** significantly discriminated F2 from F0/1(P=0.022),whereas 2D-SWE showed a broad overlap in distinguishing those *** showed a higher correlation coefficient value with fibrosis stage than 2D-SWE with fibrosis stage(0.869 vs 0.649,Spearman test;P<0.001).Multivariate linear regression analyses showed that fibrosis stage was the only factor affecting the values of MRE(P<0.001),whereas body mass index(P=0.042)and fibrosis stage(P<0.001)were independent factors affecting 2D-SWE *** performance for diagnos

关键词： Antiviral therapy Chronic hepatitis B Liver fibrosis Magnetic resonance elastography Ultrasound elastography

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Predictive proteomic biomarkers for inflammatory bowel disease-associated cancer:Where are we now in the era of the next generation proteomics?

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World Journal of Gastroenterology 2014年第37期20卷 13466-13476页

作者： Jong-min Park Na young Han young-min Han mi Kyung Chung Hoo Keun Lee Kwang Hyun Ko Eun-Hee Kim Ki Baik Hahm CHA Cancer Prevention Research Center CHA University Gachon University College of Pharmacy Digestive Disease Center CHA University Bundang Medical Center

Recent advances in genomic medicine have opened up the possibility of tailored medicine that may eventually replace traditional “one-size-fits all” approaches to the treatment of inflammatory bowel disease (IBD). In addition to exploring the interactions between hosts and microbes, referred to as the microbiome, a variety of strategies that can be tailored to an individual in the coming era of personalized medicine in the treatment of IBD are being investigated. These include prompt genomic screening of patients at risk of developing IBD, the utility of molecular discrimination of IBD subtypes among patients diagnosed with IBD, and the discovery of proteome biomarkers to diagnose or predict cancer risks. Host genetic factors influence the etiology of IBD, as do microbial ecosystems in the human bowel, which are not uniform, but instead represent many different microhabitats that can be influenced by diet and might affect processes essential to bowel metabolism. Further advances in basic research regarding intestinal inflammation may reveal new insights into the role of inflammatory mediators, referred to as the inflammasome, and the macromolecular complex of metabolites formed by intestinal bacteria. Collectively, knowledge of the inflammasome and metagenomics will lead to the development of biomarkers for IBD that target specific pathogenic mechanisms involved in the spontaneous progress of IBD. In this review article, our recent results regarding the discovery of potential proteomic biomarkers using a label-free quantification technique are introduced and on-going projects contributing to either the discrimination of IBD subtypes or to the prediction of cancer risks are accompanied by updated information from IBD biomarker research.

关键词： Inflammatory bowel disease Biomarker Proteomics Tailored medicine Colitic cancer

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