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E-GrabCut： an economic method of iterative video object extraction

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Frontiers of Computer Science 2017年第4期11卷 649-660页

作者： Le DONG ning feng Mengdie MAO Ling HE Jingjing WANG School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Efficient, interactive foreground/background seg- mentation in video is of great practical importance in video editing. This paper proposes an interactive and unsupervised video object segmentation algorithm named E-GrabCut con- centrating on achieving both of the segmentation quality and time efficiency as highly demanded in the related filed. There are three features in the proposed algorithms. Firstly, we have developed a powerful, non-iterative version of the optimiza- tion process for each frame. Secondly, more user interaction in the first frame is used to improve the Gaussian Mixture Model （GMM）. Thirdly, a robust algorithm for the follow- ing frame segmentation has been developed by reusing the previous GMM. Extensive experiments demonstrate that our method outperforms the state-of-the-art video segmentation algorithm in terms of integration of time efficiency and seg- mentation quality.

关键词： interactive video object extraction video seg-mentation GrabCut GMM

Molecular Characterisation of Two Coxsackievirus B6 Strains from the Tibet Autonomous Region of China

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Biomedical and Environmental Sciences 2019年第9期32卷 699-703页

作者： SUN Qiang HONG Mei feng ning ZHANG Yong WHO WPRO Regional Polio Reference Laboratory NHC Key Laboratory of biosafetyNational Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Tibet Center for Disease Control and Prevention Lhasa 850000Tibet Autonomous RegionChina Center for Global Public Health Chinese Center for Disease Control and PreventionBeijing 102206China

Enteroviruses (EVs) are members of the genus Enteroviruswithin the orderPicornavirales, family Picornaviridae, and consist of 12 species, including EV-A, EV-B, EV-C, and EV-D, which are associated with human infections. Coxsackievirus B6 (CV-B6)belongs to the species EV-B, which currently consists of 63 serotypes, including echovirus (serotypes 1–7,9, 11–21, 24–27, 29–33), coxsackievirus group A (CVA9), coxsackievirus group B (CV-B, serotypes 1–6),the newly identified EVs (serotypes EV-B69, B73–75,B77–88, B93, B97–98, B100–101, B106–107, and B110–113), and the simian enterovirus SA5.

关键词： Coxsackievirus B6 belongs

The Nest of Torquigener Albomaculosus:Fluid-Dynamic Aspects and Potential for Bio-Inspired Engineering

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Fluid Dynamics & Materials Processing 2023年第7期19卷 1837-1850页

作者： Zhimin Zhao Shangbin Wang Yuanhao Tie ning feng School of Electrical and Mechanical Engineering Pingdingshan UniversityPingdingshan467000China Henan Province Engineering Research Center of Ultrasonic Technology Application Pingdingshan UniversityPingdingshan467000China School of Mechanical and Transportation Engineering Guangxi University of Science and TechnologyLiuzhou545006China

Torquigener albomaculosus,also known as the white-spotted pufferfish,is known for creating circular nests in the underwater sand as part of the mating *** nests are built by the males to attract females through the nest’s impressive design and related ability to gather fine sand *** the fluid-dynamic processes associated with these unique nests are still almost completely unknown,in the present study,an analysis has been conducted to investigate how the geometric parameters related to the nest design influence the fluid velocity in its *** this reason,a geometric model of the nest consisting of 24 channels,where each unit channel can be described by three strips of broken lines,has been introduced,and a multivariate analysis has been implemented to determine the relative weight of each considered *** particular,the“optimal”combination of parameters has been obtained by means of an orthogonal design *** show that these bio-nest structures also display a potential for significant application in marine litter collection,or for use as a buffer against the waves in offshore areas.

关键词： CFD multivariate fluid analysis optimization mystery circles

Color space quantization-based clustering for image retrieval

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Frontiers of Computer Science 2017年第6期11卷 1023-1035页

作者： Le DONG Wenpu DONG ning feng Mengdie MAO Long CHEN Gaipeng KONG School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 611731 China

Color descriptors of an image are the most widely used visual features in content-based image retrieval sys- tems. In this study, we present a novel color-based image retrieval framework by integrating color space quantization and feature coding. Although color features have advantages such as robustness and simple extraction, direct processing of the abundant amount of color information in an RGB image is a challenging task. To overcome this problem, a color space clustering quantization algorithm is proposed to obtain the clustering color space （CCS） by clustering the CIE1976L＊a＊b＊ space into 256 distinct colors, which ade- quately accommodate human visual perception. In addition, a new feature coding method called feature-to-character coding （FCC） is proposed to encode the block-based main color fea- tures into character codes. In this method, images are repre- sented by character codes that contribute to efficiently build- ing an inverted index by using color features and by utilizing text-based search engines. Benefiting from its high-efficiency computation, the proposed framework can also be applied to large-scale web image retrieval. The experimental results demonstrate that the proposed system can produce a signifi- cant augmentation in performance when compared to block- based main color image retrieval systems that utilize the tra- ditional HSV（Hue, Saturation, Value） quantization method.

关键词： content-based image retrieval color spacequantization feature coding inverted index

Friction Estimation and Roll Force Prediction during Hot Strip Rolling

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Journal of Iron and Steel Research International 2016年第12期23卷 1268-1276页

作者： Wei-gang LI Chao LIU ning feng Xi CHEN Xiang-hua LIU College of Information Science and Engineering Wuhan University of Science and Technology Research Institute of Science and Technology Northeastern University

A mathematical model of friction coefficient was proposed for the roll force calculation of hot-rolled strips. The online numerical solving method of the roll force calculation formula based on the proposed friction model was developed and illustrated by the practical calculation case. Then, the friction coefficient during hot strip rolling was estimated from the measured roll force by force model inversion. And then, the expression of friction model was pro posed by analyzing the calculation process of stress state coefficient, and the model parameters were determined by the shared parameter multi-model nonlinear optimization method. Finally, the industrial experiments demonstrated the feasibility and effectiveness of the related models. The accuracy of the new roll force model based on the built friction model was much higher than that of the traditional Sims model, and it could be applied in the online hot rolling process control.

关键词： hot rolling roll force friction coefficient soft measurement multi objective optimization

Diagnosis and treatment of McCune-Albright syndrome:A case report

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World Journal of Clinical Cases 2023年第28期11卷 6817-6822页

作者： Xin Lin ning-Yu feng Yu-Jin Lei Department of Otolaryngology The Second Affiliated Clinical College of Ningxia Medical UniversityYinchuan 750000Ningxia Hui Autonomous RegionChina Department of Otolaryngology The First People's Hospital of YinchuanYinchuan 750000Ningxia Hui Autonomous RegionChina

BACKGROUND McCune-Albright syndrome(MAS)is extremely rare *** here report a case of MAS with severe symptoms that have not been reported *** SUMMARY A 10-year-old boy attended our outpatient clinic due to craniofacial malformations found two years *** underwent temporal bone computed tomography and digital radiography *** on a literature review combined with the patient's medical history and imaging examination findings,he was diagnosed with multiple fibrous dysplasia of *** the clinical symptoms related to MAS in this patient were not obvious,he was only followed up and not given any special *** The unique clinical manifestations in this MAS patient may be related to mutations in the GNAS gene.

关键词： McCune-Albright syndrome Multiple fibrous dysplasia of bone GNAS gene Genetic testing Case report

Predictive Adaptive Kalman Filter and Its Application to INS/UWB-integrated Human Localization with Missing UWB-based Measurements

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International Journal of Automation and computing 2019年第5期16卷 604-613页

作者： Yuan Xu Tao Shen Xi-Yuan Chen Li-Li Bu ning feng School of Electrical Engineering University of JinanJinan 250022China School of Instrument Science and Engineering Southeast UniversityNanjing 210096China

In order to improve the accuracy of the data fusion filter, a tightly-coupled ultra wide band(UWB)/inertial navigation system(INS)-integrated scheme for indoor human navigation will be investigated in this paper. In this scheme, the data fusion filter employs the difference between the INS-measured and UWB-measured distances as the observation. Moreover, the predictive adaptive Kalman filter(PAKF) for the tightly-coupled INS/UWB-integrated human tracking model with missing data of the UWB-measured distance will be designed, which considers the missing data of the UWB-based distance and employs the predictive UWB-measured distance. Real test results will be done to compare the performance of the Kalman filter(KF), adaptive Kalman filter(AKF), and the PAKF. The test results show that the performance of the AKF is better than the KF. Moreover, the proposed PAKF is able to maintain the performance of the filter when the UWB-based measurement is unavailable.

关键词： Indoor human localization tightly-coupled model predictive filtering Kalman filter missing data

Evaluation of the GATIS score for predicting prognosis in rectal neuroendocrine neoplasms

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World Journal of Gastroenterology 2024年第42期30卷 4587-4590页

作者： Yu-ning feng Li-Hong Liu Han-Wen Zhang Department of Radiology The First Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen Second People’s HospitalShenzhen 518000Guangdong ProvinceChina

The GATIS score,developed by Zeng et al,represents a significant advancement in predicting the prognosis of patients with rectal neuroendocrine neoplasms(RNENs).This study,which included 1408 patients from 17 major medical centres in China over 12 years,introduces a novel prognostic model based on the tumour grade,T stage,tumour size,age,and the prognostic nutritional *** with traditional methods such as the World Health Organization classification and TNM staging systems,the GATIS score has superior predictive power for overall survival and progression-free *** a C-index of 0.915 in the training set and 0.812 in the external validation set,the GATIS score’s robustness and reliability are *** study’s use of a large,multi-centre cohort and rigorous validation processes underscore its *** GATIS score offers clinicians a powerful tool to accurately predict patient outcomes,guide treatment decisions,and improve follow-up *** development represents a crucial step forwards in the management of R-NENs,addressing the complexity and variability of these tumours and setting a new benchmark for future research and clinical practice.

关键词： GATIS score Rectal neuroendocrine neoplasms Prognostic model Overall survival Multicentre study

Overexpression of RBM34 Promotes Tumor Progression and Correlates with Poor Prognosis of Hepatocellular Carcinoma

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Journal of Clinical and Translational Hepatology 2023年第2期11卷 369-381页

作者： Wei Wang Rui Zhang ning feng Longzhen Zhang Nianli Liu Cancer Institute Xuzhou Medical UniversityXuzhouJiangsuChina Center of Clinical Oncology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina Department of Radiation Oncology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina

Background and Aims:Emerging evidence suggests that RNA-binding motif(RBM)proteins are involved in hepatocarcinogenesis and act either as oncogenes or tumor *** objective of this study was to investigate the role of RBM34,an RBM protein,in hepatocellular carcinoma(HCC).Methods:We first examined the expression of RBM34 across *** correlation of RBM34 with clinicopathological features and the prognostic value of RBM34 for HCC was then *** enrichment analysis of RBM34-related differentially expressed genes(DEGs)was performed to explore its biological *** sequencing(RNA-seq)was applied to identify downstream genes and pathways affected upon RBM34 *** correlation of RBM34 with immune characteristics was also *** oncogenic function of RBM34 was examined in in vitro and in vivo ***:RBM34 was highly expressed in hepatocellular carcinoma and correlated with poor clinicopathological features and ***34 was positively associated with tumor immune cell infiltration,biomarkers of immune cells,and immune checkpoint expression.A positive correlation was also observed between RBM34,T cell exhaustion,and regulatory T cell marker *** of RBM34 significantly inhibited cell proliferation,migration,and xenograft tumor growth,and sensitized HCC cells to sorafenib ***34 inhibition reduced FGFR2 expression and affected PI3K-AKT pathway activation in HCC ***:Our study suggests that RBM34 may serve as a new prognostic marker and therapeutic target of HCC.

关键词： RBM34 Hepatocellular carcinoma Oncogene Sorafenib resistance Immune infiltration