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Object Recognition Based on Improved Context Model

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Chinese Journal of Electronics 2018年第3期27卷 573-581页

作者： WEN Chenglin zhou guangfu GAO Jingli LI Hongwei XU Xiaobin School of Automation Hangzhou Dianzi University College of Electrical Engineering Zhejiang University

An object recognition method is proposed in this paper by introducing the spatial location relationship of objects into the context model. The spatial-position information of the objects is first utilized to model the context model. The model parameters and dependency structure of objects can be learned by integrating the context information into the same probabilistic framework. The image recognition is accomplished by using the advantages of efficient inference of the tree structure model. The proposed method can greatly improve the object recognition rate and better keep the consistency of scenes. The effectiveness of the proposed algorithm is verified by testing and comparing with other existing algorithms in the actual dataset.

关键词： Context model Tree model Co-occurrence tree Spatial relationships

Characterization of ZnO Based Varistor Derived from Nano ZnO Powders and Ultrafine Dopants

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Journal of Materials Science & Technology 2005年第2期21卷 183-186页

作者： Weizhong YANG, Dali zhou, guangfu YIN, Runsheng WANG and Yun ZHANG College of Material Science and Engineering, Sichuan University, Chengdu 610064, China Coll. of Mat. Sci. and Eng. Sichuan Univ. Chengdu 610064 China

Nanosized ZnO powders were prepared with a two-step precipitation method. The average size of ZnO particles was about 80 nm and their size distribution was narrow. Combining with ultrafine additive powders, ZnO base varistor was produced via an oxide mixing route. ZnO varistor derived from normal reagent grade starting materials was investigated for comparison purpose. Outstanding microstructure of the ZnO varistor derived from nanosize ZnO powders and ultrafine dopants was obtained: uniform distribution of fine ZnO grains (less than 3 microns), grain boundary and the dopant position. Higher varistor voltage (U=492 V/mm) and nonlinear coefficient (α=56.2) as well as lower leakage current (TL=1.5 μuA) were achieved. The better electrical properties were attributed to the uniform microstructure, which in turn led to stable and uniform potential barriers. Also this improved technique is more feasible for producing ZnO nanopowders and resulting varistor in large scales.

关键词： Zinc oxide (ZnO) Varistor Nanopowders Ultrafine dopants Two-step precipitation

Preparation of N-B doped composite electrode for iron-chromium redox flow battery

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Green Energy and Intelligent Transportation 2024年第3期3卷 1-10页

作者： Yingchun Niu Senwei Zeng guangfu Wu Qingtan Gao Ruichen zhou Chuanyuan Li Yang zhou Quan Xu State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing102249BeijingChina

Iron-chromium redox flow battery(ICRFB)is an electrochemical energy storage technology that plays a vital role in dealing with the problems of discontinuity and instability of massive new energy generation and improving the acceptance capacity of the power *** cloth electrode(CC)is the main site where the electrochemical reaction occurs,which always suffers from the disadvantages of poor electrochemical reactivity.A new N-B codoped co-regulation Ti composite CC electrode(T-B-CC)is firstly generated and applied to ICRFB,where the REDOX reaction can be promoted significantly owing to the plentiful active sites generated on the modified *** contrasted with ICRFB with normal CC electrode,after 50 battery charge/discharge cycles,the discharge capacity(1,990.3 mAh vs 1,155.8 mAh)and electrolyte utilization(61.88%vs 35.94%)of ICRFB with CC electrode(T-B-CC)are significantly ***,the energy efficiency(EE)is maintained at about 82.7%under 50 cycles,which is 9.3%higher than that of the pristine electrically assembled *** comodulation of heteroatom doping and the introduction of Ti catalysts is a simple and easy method to improve the dynamics of the Cr^(3+)/Cr^(2+)and Fe^(3+)/Fe^(2+)reactions,enhancing the performance of ICRFBs.

关键词： Iron-chromium redox flow battery N-B co-doped co-regulation REDOX reaction rate Performance

Fabrication of highly effective electrodes for iron chromium redox flow battery

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Nano Research 2024年第5期17卷 3988-3996页

作者： Yingchun Niu Chao Guo Yinping Liu guangfu Wu Tianhang zhou Fangang Qu Ziji Yang Ali Heydari Chunming Xu Quan Xu State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102249China

Iron-chromium redox flow batteries(ICRFBs)have emerged as promising energy storage devices due to their safety,environmental protection,and reliable *** carbon cloth(CC),often used in ICRFBs as the electrode,provides a suitable platform for electrochemical processes owing to its high surface area and interconnected porous ***,the CC electrodes have issues,such as,insufficient electron transfer performance,which limits their industrial ***,we employed silicic acid etching to carve dense nano-porous structures on the surface of CC electrodes based on the favorable design of ICRFBs and the fundamental principles of electrode polarization *** a result,we developed a multifunctional carbon cloth electrode with abundant vacancies,notably enhancing the performance of the *** fabricated electrode showcased a wealth of defect sites and superior electronic transport properties,offering an extensive and effective reaction area for rapidly flowing *** an electrode compression ratio of 40%and the highest current density in ICRFBs so far(140 mA·cm^(-2)),the battery achieved the average energy efficiency of 81.3%,11.24%enhancement over the previously published ***,throughout 100 charge-discharge cycles,the average energy efficiency degradation was negligible(~0.04%),which has the potential to become the most promising candidate for large-scale and long-term electrochemical energy storage applications.

关键词： iron chromium redox flow battery electron carbon cloth defect site density functional theory(DFT)calculation

Surface-modified Biphasic Calcium Phosphate/Poly (L-lactide) Biocomposite

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Journal of Wuhan University of Technology(Materials Science) 2009年第1期24卷 81-86页

作者：杨为中尹光福 College of Material Science and Engineering Sichuan University

Biphasic calcium phosphate （BCP） powders were prepared by hydrolyzation proc-ess and surface-modified by directly grafted L-lactide （LLA） onto the surface of BCP through a chemical linkage. The grafting ratio of organic groups was 9 wt%. After surface modification, the surface of BCP powders was covered by the lamella-shaped crystal. Poly （L-lactide） was mixed with BCP to form the BCP/PLLA biocomposite. Modified BCP （mBCP） particles could be uniformly dis-persed in PLLA matrix. The compressive strength of the mBCP/PLLA composite is 115 MPa, 28% higher than that of unmodified-BCP/PLLA composite. The improved mechanical strength is attributed to the enhanced adhesion between the inorganic BCP filler and the organic PLLA matrix.

关键词： biphasic calcium phosphate (BCP) surface modification grafting composite poly L-lactide

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复合混凝土机床床身及其动静态性能研究

制造技术与机床 2014年第1期 88-93页

作者：丁江民周光富大连交通大学辽宁大连116028

以高强硅酸盐钢筋水泥混凝土为内核主体、以树脂混凝土为外部包覆层的复合混凝土是一种应用于制造机床床身的新型材料,以制造卧式加工中心机床床身为例,进行了其相关材料性能测试,在测试数据的基础上对复合混凝土材料卧式加工中心机床... 详细信息

以高强硅酸盐钢筋水泥混凝土为内核主体、以树脂混凝土为外部包覆层的复合混凝土是一种应用于制造机床床身的新型材料,以制造卧式加工中心机床床身为例,进行了其相关材料性能测试,在测试数据的基础上对复合混凝土材料卧式加工中心机床床身动静态性能进行了仿真分析和实验,结果表明该种复合混凝土机床床身具有优良的动静态性能。

关键词：复合混凝土床身仿真测试

基于Kano模型的铁路货运服务质量提升策略分析

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铁道科学与工程学报 2017年第9期14卷 2005-2012页

作者：冯芬玲周广富中南大学交通运输工程学院湖南长沙410075

当今社会铁路货运服务质量倍受关注,提高服务质量成为铁路企业实现经营目标的重要途径。基于现有文献,结合专家建议以及小组讨论,设计出铁路货运服务质量要素指标体系,将Kano模型应用到铁路货运服务质量提升的研究中,通过Kano模型对铁... 详细信息

当今社会铁路货运服务质量倍受关注,提高服务质量成为铁路企业实现经营目标的重要途径。基于现有文献,结合专家建议以及小组讨论,设计出铁路货运服务质量要素指标体系,将Kano模型应用到铁路货运服务质量提升的研究中,通过Kano模型对铁路货运服务质量要素进行识别,对其进行Kano分类,并通过IPA分析矩阵对铁路货运服务质量要素归属策略和优先权进行判定。通过实例验证了方法的可行性,可以为铁路货运服务质量的提升提供理论依据。

关键词：铁路货运服务质量 Kano模型提升策略

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和谐社会视野下的公诉观

人民检察 2007年第6S期 17-18页

作者：孙宏皋周光富四川省成都市人民检察院四川省成都市成华区人民检察院

公诉观是指公诉人在提起公诉、支持公诉、公诉变更、抗诉的过程中对公诉的性质、目的、模式、职能、程序及其诉讼法律关系等一系列问题的认识、态度、理念和价值取向的总称。公诉观属于司法价值的观念体系，是一种执法理念，“在公诉过... 详细信息

公诉观是指公诉人在提起公诉、支持公诉、公诉变更、抗诉的过程中对公诉的性质、目的、模式、职能、程序及其诉讼法律关系等一系列问题的认识、态度、理念和价值取向的总称。公诉观属于司法价值的观念体系，是一种执法理念，“在公诉过程中有极强的引领性和指导意义，体现在对案件特质的洞察、法律冲突的选择、非法因素的摒弃、整体公正的把握。”公诉观决定公诉行为．影响公诉质量．

关键词：提起公诉社会视野和谐诉讼法律关系司法价值公诉变更观念体系执法理念

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和谐社会视野下的公诉观

国家检察官学院学报 2007年第1期15卷 46-52页

作者：孙宏皋周光富四川省成都市人民检察院四川成都610041 四川省成都市成华区人民检察院四川成都610051

作为一种执法理念的公诉观,应顺应国家意志的阶段性重心要求。以社会发展的眼光,挖掘公诉观的应然状态,极具理论和现实意义。公诉观的内在品质体现在一系列基本理念中,包括:宽和、理性、人性。宽和的司法心境是实现公诉理性和人文关怀... 详细信息

作为一种执法理念的公诉观,应顺应国家意志的阶段性重心要求。以社会发展的眼光,挖掘公诉观的应然状态,极具理论和现实意义。公诉观的内在品质体现在一系列基本理念中,包括:宽和、理性、人性。宽和的司法心境是实现公诉理性和人文关怀的前提和基础。公诉的理性精神深刻影响和决定着公诉的过程和公诉的质量,是公诉的逻辑起点。人性、人道则是公诉观的内在禀赋。

关键词：公诉观宽和理性人性