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Supervised Feature Learning for Offline Writer Identification Using VLAD and Double Power Normalization

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Computers, Materials & Continua 2023年第7期76卷 279-293页

作者： dawei liang Meng Wu Yan Hu College of Computer Nanjing University of Posts and TelecommunicationsNanjing210023China Department of Computer Information and Cyber Security Jiangsu Police InstituteNanjing210031China JinCheng College Nanjing University of Aeronautics and AstronauticsNanjing211156China Engineering Research Center of Electronic Data Forensics Analysis Nanjing210031Jiangsu ProvinceChina

As an indispensable part of identity authentication,offline writer identification plays a notable role in biology,forensics,and historical document ***,identifying handwriting efficiently,stably,and quickly is still challenging due to the method of extracting and processing handwriting *** this paper,we propose an efficient system to identify writers through handwritten images,which integrates local and global features from similar handwritten *** local features are modeled by effective aggregate processing,and global features are extracted through transfer ***,the proposed system employs a pre-trained Residual Network to mine the relationship between large image sets and specific handwritten images,while the vector of locally aggregated descriptors with double power normalization is employed in aggregating local and global ***,handwritten image segmentation,preprocessing,enhancement,optimization of neural network architecture,and normalization for local and global features are exploited,significantly improving system *** proposed system is evaluated on Computer Vision Lab(CVL)datasets and the International Conference on Document Analysis and Recognition(ICDAR)2013 *** results show that it represents good generalizability and achieves state-of-the-art ***,the system performs better when training complete handwriting patches with the normalization *** experimental result indicates that it’s significant to segment handwriting reasonably while dealing with handwriting overlap,which reduces visual burstiness.

关键词： Writer identification power normalization vector of locally aggregated descriptors feature extraction

Enhanced degradation of refractory organics in ORR-EO system with a blue TiO_(2)nanotube array modified Ti-based Ni-Sb co-doped SnO_(2)anode

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Chinese Chemical Letters 2024年第8期35卷 391-395页

作者： Yifen He Chao Qu Na Ren dawei liang Department of Materials Chemistry School of Materials Science&EngineeringBeihang UniversityBeijing 102206China Department of Environmental Science Faculty of Environment&LifeBeijing University of TechnologyBeijing 100124China

Recently,a novel 2-electron oxygen reduction reaction(ORR)based electro-oxidation(EO)system was developed,which utilizes a H_(2)O_(2)generation cathode instead of H_(2)evolution cathode.A Ti-based Ni-Sb co-doped SnO_(2)(Ti/NATO)anode was selected for efficient degradation of refractory organics and O_(3)*** synergistic reaction of O3/H_(2)O_(2)further accelerated the generation of hydroxyl radicals(·OH)in the ORR-EO ***,the catalytic activity and long-term effectiveness of the Ti/NATO anode limited the large-scale application of the ORR-EO *** this study,a blue TiO_(2)nanotube array(blue-TiO_(2)-NTA)inter-layer was introduced into the fabrication process between the Ti substrate and NATO catalyst *** to the Ti/NATO anode,the Ti/blue-TiO_(2)-NTA/NATO anode achieved higher efficiency of organic removal and O_(3)***,the accelerated lifetime of the Ti/blue-TiO_(2)-NTA/NATO anode was increased by 7 times compared to the Ti/NATO *** combined with CNTs-C/PTFE air cathode in ORR-EO system,all anodic oxidation and O_(3)/H_(2)O_(2)processes achieved higher•OH *** 92%of TOC in leachate bio-effluent was effectively eliminated with a relatively low energy cost of 45 kWh/t.

关键词： Electro-oxidation Blue TiO_(2)nanotube array O_(3)/H_(2)O_(2)process Refractory organics Leachate bio-effluent

Effects of bicarbonate and cathode potential on hydrogen production in a biocathode electrolysis cell

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Frontiers of Environmental Science & Engineering 2014年第4期8卷 624-630页

作者： dawei liang Yanyan LIU Sikan PENG Fei LAN Shanfu LU Yan XIANG Key Laboratory of Bio-lnspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry & Environment Beihang University Beijing 100191 China Beijing Key Laboratory for Advanced Functional Materials and Thin Fihn Technology Beihang University Beijing 100191 China

A biocathode with microbial catalyst in place of a noble metal was successfully developed for hydrogen evolution in a microbial electrolysis cell （MEC）. The strategy for fast biocathode cultivation was demonstrated. An exoelectrogenic reaction was initially extended with an H2-full atmosphere to enrich Ha-utilizing bacteria in a MEC bioanode. This bioanode was then inversely polarized with an applied voltage in a half-cell to enrich the hydrogen-evolving biocathode. The electrocatalytic hydrogen evolution reaction （HER） kinetics of the biocathode MEC could be enhanced by increasing the bicarbonate buffer concentration from 0.05 mol·L-1 to 0.5 mol· L-1 and/or by decreasing the cathode potential from -0.9 V to - 1.3 V vs. a saturated calomel electrode （SCE）. Within the tested potential region in this study, the HER rate of the biocathode MEC was primarily influenced by the microbial catalytic capability. In addition, increasing bicarbonate concentration enhances the electric migration rate of proton carriers. As a consequence, more mass H＋ can be released to accelerate the biocathode-catalyzed HER rate. A hydrogen production rate of 8.44 m3. m 3. d1 with a current density of 951.6 A. m-3 was obtained using the biocathode MEC under a cathode potential of - 1.3 V vs. SCE and 0.4 mol· L-1 bicarbonate. This study provided information on the optimization of hydrogen production in biocathode MEC and expanded the practical applications thereof.

关键词： microbial electrolysis cell (MEC) biocathode hydrogen production bicarbonate cathode potential

Transparent exopolymer particles(TEPs)-associated protobiofilm:A neglected contributor to biofouling during membrane filtration

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 205-214页

作者： Shujuan Meng Rui Wang Kaijing Zhang Xianghao Meng Wenchao Xue Hongju Liu dawei liang Qian Zhao Yu Liu School of Space and Environment Beihang UniversityBeijing100191China Department of Energy Environment and Climate ChangeSchool of EnvironmentResources and DevelopmentAsian Institute of TechnologyP.O.Box 4Klong LuangPathumthani12120Thailand School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan250101China School of Civil and Environmental Engineering Nanyang Technological UniversitySingapore639798Singapore

Transparent exopolymer particles(TEPs)are a class of transparent gel-like polysaccharides,which have been widely detected in almost every kind of feed water to membrane systems,including freshwater,seawater and *** TEP have been thought to be related to the membrane fouling,little information is currently available for their influential mechanisms and the pertinence to biofouling *** present study,thus,aims to explore the impact of TEPs on biofouling development during *** samples were inoculated with bacteria for several hours before filtration and the formation of“protobiofilm”(pre-colonized TEP by bacteria)was examined and its influence on biofouling was *** was observed that the bacteria can easily and quickly attach onto TEPs and form *** experiments further revealed that TEP-protobiofilms served as carriers which facilitated and accelerated transport of bacteria to membrane surface,leading to rapid development of biofouling on the ultrafiltration membrane ***,compared to the feed water containing independent bacteria and TEPs,more flux decline was observed with ***,it appeared from this study that TEP-protobiofilms play a vital role in the development of membrane biofouling,but unfortunately,this phenomenon has been often overlooked in the ***,these findings in turn may also challenge the current understanding of organic fouling and biofouling as membrane fouling caused by TEP-protobiofilm is a combination of *** is expected that this study might promote further research in general membrane fouling mechanisms and the development of an effective mitigation strategy.

关键词： Transparent exopolymer particles(TEPs) TEP-protobiofilm Bacteria attachment Biofouling of membrane

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新时代中国共产党对中国式现代化理论的贡献

思想理论教育导刊 2023年第5期 4-14页

作者：梁大伟大连理工大学马克思主义学院

概括提出并深入阐述中国式现代化理论是党的二十大的重大理论创新,是科学社会主义的最新重大成果。新时代以来,以习近平同志为核心的党中央把握历史规律、总结历史经验、研判历史大势、掌握历史主动,科学阐释中国式现代化的中国特色、... 详细信息

概括提出并深入阐述中国式现代化理论是党的二十大的重大理论创新,是科学社会主义的最新重大成果。新时代以来,以习近平同志为核心的党中央把握历史规律、总结历史经验、研判历史大势、掌握历史主动,科学阐释中国式现代化的中国特色、本质要求以及全面建成社会主义现代化强国的战略安排和重大原则等,初步构建起中国式现代化的理论体系,对推进和拓展中国式现代化作出了重要理论贡献,开辟了马克思主义中国化时代化新境界,为以中国式现代化全面推进中华民族伟大复兴提供了根本遵循。

关键词：新时代中国共产党中国式现代化理论

论19世纪末20世纪初美国社会主义运动的历史性转折--以1877年铁路工人大罢工为中心的考察

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社会主义研究 2016年第4期 142-146页

作者：梁大伟大连理工大学马克思主义学院

1877年美国铁路工人大罢工是美国从"镀金时代"到"进步时代"过渡时期社会劳动性质变化和劳资矛盾不断激化的背景下发生的,是美国国家"现代化"转型时期诸多社会矛盾的总爆发。它是早期美国工人运动由被动、盲从向自发、明确转变的关键节点... 详细信息

1877年美国铁路工人大罢工是美国从"镀金时代"到"进步时代"过渡时期社会劳动性质变化和劳资矛盾不断激化的背景下发生的,是美国国家"现代化"转型时期诸多社会矛盾的总爆发。它是早期美国工人运动由被动、盲从向自发、明确转变的关键节点,并由此催生了工会、政党、联盟等组织形式,进而形成了全民运动,这次斗争使垄断集团和美国政府被迫进行适当的政策调整,通过提高工人社会地位,保障工人合法权益等措施缓解劳资矛盾,维持社会稳定。早期的美国社会主义运动也因此展现出组织化、规模化、全民化、进步性等特点,同时,对国际共产主义运动的勃兴起到了一定的推动作用。

关键词：美国社会主义运动进步时代劳资关系国际共运美国社会党

普通高校体育专业学生本硕融合培养的理论及实践——以华南理工大学为例

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体育学刊 2023年第4期30卷 98-105页

作者：梁大为华南理工大学体育学院广东广州510641

高校在助力新时代社会经济发展、创新型国家建设、德智体美劳人才培养中承担重要使命,体育人才培养在健康中国、体育强国战略实现中具有不可替代的作用。采用文献资料、调研访谈等方法,运用差异化教学理论和“教学做合一”理论,探究普... 详细信息

高校在助力新时代社会经济发展、创新型国家建设、德智体美劳人才培养中承担重要使命,体育人才培养在健康中国、体育强国战略实现中具有不可替代的作用。采用文献资料、调研访谈等方法,运用差异化教学理论和“教学做合一”理论,探究普通高校体育专业学生本硕融合培养的教学模式。在体育专业本硕学生特质差异化分析基础上,提出建立本硕跨学科人才培养体系、规范本硕教学考核管理制度、探索本硕科研创新联动模式的实践路径。同时,结合华南理工大学体育专业学生本硕融合培养实践,从“三力”教学改革、师生互助机制、实践基地建设、导师遴选制度4个维度提出本硕融合培养的对策建议,期望提高高等教育体育专业人才培养质量。

关键词：普通高校体育专业本硕融合培养高校学生华南理工大学

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高校学生体育社团“三全育人”的路径及对策

体育学刊 2022年第4期29卷 98-103页

作者：梁大为华南理工大学体育学院广东广州510641

运用马克思主义关于人的全面发展理论,探究高校学生体育社团“三全育人”的实践路径。研究发现,高校学生体育社团存在思想政治教育有效性不足、管理部门协同不够通畅、育人配套要素支持不足、法规制度未能落到实效的现实困境。据此提出... 详细信息

运用马克思主义关于人的全面发展理论,探究高校学生体育社团“三全育人”的实践路径。研究发现,高校学生体育社团存在思想政治教育有效性不足、管理部门协同不够通畅、育人配套要素支持不足、法规制度未能落到实效的现实困境。据此提出应从政策保障、管理协同、激励机制、思想引导等路径提升“三全育人”的针对性和实效性,培养德智体美劳全面发展的社会主义建设者和接班人,最终实现高校立德树人的根本任务。

关键词：学校体育高校学生体育社团三全育人

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习近平文化思想的意识形态力量

思想教育研究 2024年第2期 11-17页

作者：梁大伟王倬大连理工大学马克思主义学院辽宁大连116024

习近平文化思想作为习近平新时代中国特色社会主义思想的文化篇,是马克思主义中国化时代化在文化领域的重大创新成果。习近平文化思想的创造性提出,从文化层面丰富了新时代中国共产党意识形态理论,蕴含着强大而深沉的意识形态力量。推... 详细信息

习近平文化思想作为习近平新时代中国特色社会主义思想的文化篇,是马克思主义中国化时代化在文化领域的重大创新成果。习近平文化思想的创造性提出,从文化层面丰富了新时代中国共产党意识形态理论,蕴含着强大而深沉的意识形态力量。推进马克思主义中国化时代化,展现意识形态思想之力;提振当代中国人的精神面貌,彰显意识形态精神之力;建设中华民族现代文明,凸显意识形态文明之力。在以中国式现代化全面推进中华民族伟大复兴的关键节点,必须充分认识和科学运用习近平文化思想所蕴含的意识形态力量,不断为强国建设、民族复兴提供坚强的思想保证、强大的精神力量和有利的文化条件。

关键词：习近平文化思想意识形态力量中华民族现代文明