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Rejecting Character Recognition Errors Using CNN Based Confidence Estimation

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Chinese Journal of Electronics 2016年第3期25卷 520-526页

作者： LI Pengchao PENG Liangrui wen juan Tsinghua National Laboratory for Information Science and Technology Dept.of Electronic EngineeringTsinghua University Equipment Academy

Although Optical character recognition(OCR) technology has achieved huge progress in recent years, character misrecognition is inevitable. In order to realize high fidelity content of document digitalization,we propose a new Convolutional neural networks(CNN)based confidence estimation method. We detect the misrecognized characters through comparing the confidence value with a preset threshold, so as to leave the recognition errors as embedded images in the output digital documents. We adopted sofmax as the estimation of posteriori probability,overlap pooling and maxout with dropout technologies in CNN architecture design. Experimental results show that our method has achieved an explicit improvement compared to baseline system.

关键词： Optical character recognition(OCR) Confidence estimation Convolutional neural networks(CNN)

The characteristics of sonoluminescence

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Chinese Physics B 2012年第1期21卷 499-506页

作者： An Yu Zhang wen-juan Department of Physics Tsinghua UniversityBeijing 100084China

Cavitation luminescence is light emission from gases that are compressed to high temperature and high pressure inside a bubble or group of bubbles. The numerical simulation in this study indicates that if the temperature and pressure inside a bubble are not high enough, then dim and spectral line emission dominates. However, if the temperature and pressure inside the bubble are very high, then the light is bright and a continuum spectrum will be generated. Calculations of the spectrum using modified equations of bubble motion can simulate the spectral profile well. However, pulse width calculations using these equations only partly agree with the experimental results.

关键词： sonoluminescence spectrum pulse width

Science——an important lever to tackle sustainability in the specialty chemical industry

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National Science Review 2023年第9期10卷 19-20页

作者： wen-juan Zhou Pascal Metivier Efficient Products and Processes Laboratory(E2P2L) UMI 3464 CNRS-Solvay Research & Innovation Solvay SA

Carbon neutrality by the mid-twenty-first century is essential in order to limit global warming to≤1.5℃,which is also laid down in the Paris Agreement signed by 196 countries including China,the European Union and the USA,etc.[1].The chemical industry is crucial to building a sustainable global economy to contribute to carbon neutrality.

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Oscillatory Behavior of Third-order Nonlinear Differential Equations with a Sublinear Neutral Term

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Acta Mathematicae Applicatae Sinica 2022年第2期38卷 484-496页

作者： wen-juan LI Yuan-hong YU Mathematic and computer science College Chifeng UniversityChifeng 024000China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China

The authors present some new criteria for oscillation and asymptotic behavior of solutions of third-order nonlinear differential equations with a sublinear neutral term of the form(r(t)(z"(t))α)+∫_(c)^(d)q(t,ξ)f(x(σ(t,ξ)))dξ=0,t≥t_(0) where z(t)=x(t)+∫_(a)^(b)p(t,ξ)x^(γ)(τ(t,ξ))dξ,0<γ≤*** the conditions∫_(t_(0)-1)^(∞)r^(-1/α)(t)dt=∞or∫_(t0)^(∞)r^(-1/α)(t)dt<∞.The results obtained here extend,improve and complement to some known results in the *** are provided to illustrate the theorems.

关键词： oscillatory behavior neutral differential equation third-order

Analysis and Design of Scheduling Schemes for Wireless Networks with Unsaturated Traffic

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China Communications 2021年第2期18卷 65-85页

作者： Jianfei Li juan wen Min Sheng State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China

Scheduling schemes assign limited resources to appropriate users,which are critical for wireless network *** current schemes have been designed based on saturated traffic,i.e.,assuming users in networks always have data to ***,the user buffer may sometimes be empty in actual ***,these algorithms will allocate resources to users having no data to transmit,which results in resource *** view of this,we propose new scheduling schemes for onehop and two-hop link scenario with unsaturated ***,this paper analyzes their key network performance indicators,including the average queue length,average throughput,average delay and outage *** two scheduling algorithms avoid scheduling the links whose buffers are empty and thus improve the network resource *** the one-hop link scenario,network provides differentiated services via adjusting the scheduling probabilities of the destination nodes(DNs)with different *** the DNs with same priority,the node with higher data arrival rate has larger scheduling *** the two-hop link scenario,we prioritize the scheduling of relay-to-destination(R-D)link and dynamically adjust the transmission probability of source-to-relay(S-R)link,according to the length of remaining *** experiment results show the effectiveness and advantage of the proposed algorithms.

关键词： markov chain unsaturated traffic performance analysis scheduling

The relationship of blood cell-associated inflammatory indices and diabetic retinopathy: a Meta-analysis and systematic review

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International Journal of Ophthalmology(English edition) 2019年第2期12卷 312-323页

作者： wen-juan Luo wen-Fang Zhang Department of Ophthalmology Lanzhou University Second Hospital

AIM: To explore the correlation between several blood cell-associated inflammatory indices including mean platelet volume(MPV), platelet distribution width(PDW), neutrophil to lymphocyte ratio(NLR) and platelet-lymphocyte ratio(PLR), and the presence and severity of diabetic retinopathy(DR). METHODS: We searched for eligible studies from PubMed, EMBASE, Web of Science and CNKI up to December 13, 2017. Standardized mean difference(SMD) calculated with confidence interval(CI) of 95% was used to estimate the values of those indices. RESULTS: A total of 31 studies were included in the present Meta-analysis. As compared with type 2 diabetes mellitus(T2 DM) patients without DR, the values of MPV, PDW, NLR, and PLR were higher in patients with DR(SMD=0.67; 95%CI: 0.36 to 0.98; SMD=0.51; 95%CI: 0.27 to 0.75; SMD=0.77; 95%CI: 0.49 to 1.05 and SMD=1.18; 95%CI: 0.07 to 2.28). Additionally, it was also observed that MPV was closely correlated with the severity of DR. CONCLUSION: MPV, PDW, NLR, and PLR could be recommended as diagnostic biomarkers for DR, and MPV could be applied to assess the severity of DR.

关键词： mean platelet volume platelet distribution width neutrophil to lymphocyte ratio platelet-lymphocyte ratio diabetic retinopathy

Prenatal ultrasonography and genetic analysis of fetal cleidocranial dysplasia:A case report

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World Journal of Clinical Cases 2025年第10期13卷 28-34页

作者： Feng Wang Pei-Feng Dai wen-juan Gao Department of Ultrasonography Weifang People’s HospitalWeifang 261000Shandong ProvinceChina

BACKGROUND Cleidocranial dysplasia(CCD)is an infrequent clinical condition with an autosomal dominant inheritance *** is characterized by abnormal clavicles,patent sutures and fontanelles,supernumerary teeth,and short *** 60%-70%of patients with CCD have mutations in the RUNX family transcription factor 2 ***,prenatal diagnosis of CCD is difficult when the family history is *** SUMMARY We report a rare case of fetal CCD with an unknown family history,confirmed by prenatal ultrasonography and genetic testing at a gestational age of 16 *** genetic reports indicated that the fetus carried pathogenic mutations in the RUNX family transcription factor 2 gene(c.674G>A).After careful consideration,the pregnant woman and her family decided to continue the *** Definitive prenatal diagnosis of CCD should include family history,ultrasound diagnosis,and genetic analysis,especially if family history is unknown.

关键词： Cleidocranial dysplasia Genetic analysis Ultrasonic diagnosis Prenatal Case report

The Einstein-Khler Metric on the Third Cartan-Hartogs Domain

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Acta Mathematica Sinica,English Series 2008年第10期24卷 1703-1712页

作者： wen juan ZHANG Wei Ping YIN Department of Mathematics Beijing Institute of Technology Beijing 100081 P. R. China Department of Mathematics Capital Normal University Beijing 100037 P. R. China

In this paper we discuss the Einstein-Kahler metric on the third Cartan-Hartogs domain Y111（n, q; K）. Firstly we get the complete Einstein Kahler metric with explicit form on Y111（n, q; K） in the case of K=q/2 ＋ 1/q-1. Secondly we obtain the holomorphic sectional curvature under this metric and get the sharp estimate for this holomorphic curvature. Finally we prove that the complete Einstein-Kahler metric is equivalent to the Bergman metric on Y111（n, q; K） in case of K=q/2＋1/q-1.

关键词： Einstein Kahler metric holomorphic sectional curvature holomorphic automorphism group

Continuity properties for commutators of multilinear type operators on product of certain Hardy spaces

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Frontiers of Mathematics in China 2014年第6期9卷 1325-1347页

作者： wen.juan LI Qingying XUE School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics andComplex Systems Ministry of Education Beijing 100875 China

Similar to the property of a linear Calderdn-Zygmund operator, a linear fractional type operator Is associated with a BMO function b fails to satisfy the continuity from the Hardy space Hp into Lp for p ≤ 1. Thus, an alternative result was given by Y. Ding, S. Lu and P. Zhang, they proved that [b,Iα] is continuous from an atomic Hardy space Hp b into Lp, where Hp b is a subspace of the Hardy space Hp for n/（n ＋ 1）〈 p ≤ 1. In this paper, we study the commutators of multilinear fractional type operators on product of certain Hardy spaces. The endpoint （Hp1 b1 ×... × HP2, Lp） boundedness for multilinear fractional type operators is obtained. We also give the boundedness for the commutators of multilinear Calderdn-Zygmund operators and multilinear fractional type operators on product of certain Hardy spaces when b ∈ （Lipβ）m（Rn）.

关键词： Multilinear fractional type operator multilinar Calderdn-Zygmundoperator commutator Hardy type space