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Precise Integration Method of C-integral for Linear Viscoelastic Solids with Crack

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上海交通大学学报 2004年第z2期38卷 25-31页

作者： liu jinghua Wu Changchun Huang Ruoyu School of Naval Arch. Ocean & Civil Engineering Shanghai Jiaotong Univ. Shanghai200030 China School of Naval Arch. Ocean & Civil Engineering Shanghai Jiaotong Univ. Shanghai200030 China School of Naval Arch. Ocean & Civil Engineering Shanghai Jiaotong Univ. Shanghai200030 China

Generally, viscoelastic solid constitutive equation can be written into differential form and integral form. From differential form of constitutive equation the mathematical representation of the state space equation can be derived. Due to the state space equation, general constitutive equation can be solved by precise integration method that can be used in many fields with the advantages of highly precision and convenience. For linear viscoelastic solids with crack, the finite elements program of the precise integration method for viscoelastic solid is developed, which appears to be efficient and precise. C-integral is used to be the characterising parameter.

关键词： precise integration C-integral viscoelastic finite element

“非遗+文旅”融合视域下磁州窑品牌形象塑造与推广策略研究

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邯郸职业技术学院学报 2024年第2期37卷 9-12页

作者：刘敬华李翠轻石家庄铁路职业技术学院人文社科系石家庄050041

探析当下磁州窑发展的现状,深度挖掘磁州窑的文化内涵,将磁州窑品牌设计与其价值理念、产品特性相结合,并对其进行综合化、系统化的视觉符号表达和视觉形象设计,提炼出磁州窑品牌的核心价值,引导一切营销传播活动,持续维护和宣传品牌形象。

关键词：磁州窑文旅融合非物质文化遗产品牌塑造品牌推广

Application of Laser Ultrasonic Technique for Non-contact Detection of Angled Surface Defects

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第5期35卷 858-865页

作者： Guo Ruipeng liu jinghua Wang Haitao College of Automation Engineering Nanjing University of Aeronautics and Astronautics

Based on the finite element method,the angled surface defects have been investigated by using the laser generated surface acoustic wave(SAW).The feature of laser generated SAW interaction with the angled defect is analyzed in time and frequency *** increase in the amplitude of SAW at the edge of the defect is observed,and the spectral feature is angle *** the angle decreasing from 120°to 30°,the maximum amplitude of frequency spectrum of SAW increases *** corresponding experimental results verify the feasibility of numerical analyses and reach a good agreement with simulation results.

关键词： laser ultrasound surface acoustic wave angled surface defect spectrum

Giant magnetostrictive materials

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Science China(Technological Sciences) 2012年第5期55卷 1319-1326页

作者： liu jinghua JIANG ChengBao XU HuiBin School of Materials Science and Engineering Beihang University Beijing 100191 China

Giant magnetostrictive materials are a kind of functional materials developed since 1970s, known as their large magnetostrain and high energy density. In this paper, an introduction of magnetostriction and the history of magnetostrictive materials are described firstly. Then we review the recent developments of both rare earth and non-rare earth magnetostrictive materials. Finally, the tendency of developing new giant magnetostrictive materials is presented.

关键词： giant magnetostrictive materials magnetostriction magnetization

儿童Vogt-小柳-原田综合征临床特征分析

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眼科 2024年第5期33卷 350-355页

作者：胡亭彭晓燕黄志王红刘敬花麻婧北京市延庆区医院(北京大学第三医院延庆医院)眼科北京102100 首都医科大学附属北京同仁医院、北京同仁眼科中心、眼科学与视觉科学北京市重点实验室北京100730 北京美尔目眼科医院北京100036

目的分析儿童Vogt-小柳-原田(VKH)综合征的临床特征。设计回顾性病例系列。研究对象9例(18眼)儿童VKH综合征患者。方法回顾患者的病历资料。主要指标症状、体征及治疗结果。结果9例患者平均年龄(10.8±2.4)岁,平均随访(8.1±6.1)个月。7... 详细信息

目的分析儿童Vogt-小柳-原田(VKH)综合征的临床特征。设计回顾性病例系列。研究对象9例(18眼)儿童VKH综合征患者。方法回顾患者的病历资料。主要指标症状、体征及治疗结果。结果9例患者平均年龄(10.8±2.4)岁,平均随访(8.1±6.1)个月。7例(77.8%)发病前有前驱症状,其中感冒样症状3例(42.8.%),头痛耳鸣者2例(28.6%),仅头痛2例(28.6%)。2例合并有关节症状及反复发作口腔溃疡。3例合并结核分枝杆菌感染。1例发生于麻疹疫苗接种后。所有患者均口服糖皮质激素治疗,2例联合阿达木单抗(ADA)治疗,其中1例为早期联合使用,另1例是治疗5个月后炎症控制不佳再联合应用。末次随访时14眼(77.8%)视力≥0.6;4眼(22.2%)30天者,其中2眼炎症反复发作,1眼因玻璃体混浊、全周视网膜脱离伴广泛视网膜下增殖行玻璃体切除术。9例患者中,3例未发生并发症,其中1例为早期联合应用ADA者。结论感染及疫苗接种可能是儿童VKH综合征的发病诱因,治疗前要重视结核感染的排查,糖皮质激素联合ADA治疗可改善治疗效果。

关键词： Vogt-小柳-原田综合征儿童

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孕期发生ICP的风险因素分析

中国实验诊断学 2024年第6期28卷 631-636页

作者：刘晶华刘耀丹刘敏张晓红上海市(复旦大学附属)公共卫生临床中心妇产科上海201508

目的分析妊娠期发生ICP的相关风险因素,对妊娠期发生ICP的风险进行早期预测。方法收集2018年5月至2023年5月上海市公共卫生临床中心收治的300例妊娠期肝内胆汁淤积症病例为ICP组,同期收治的300正常孕妇为对照组,临床病例资料完整,进行... 详细信息

目的分析妊娠期发生ICP的相关风险因素,对妊娠期发生ICP的风险进行早期预测。方法收集2018年5月至2023年5月上海市公共卫生临床中心收治的300例妊娠期肝内胆汁淤积症病例为ICP组,同期收治的300正常孕妇为对照组,临床病例资料完整,进行回顾性分析。结果ICP组孕妇的临床特征中年龄大于30岁、既往ICP病史、皮肤瘙痒、孕前BMI>24、妊娠期高血糖、甲状腺疾病、辅助生殖及多胎发生率明显高于对照组,差异有统计学意义(P<0.05),以上临床特征指标是孕期发生ICP的风险因素。临床特征构建的列线图可以预测发生ICP的风险。Lasso-Logistic回归分析结果显示化验指标肝功能(ALT、TBIL)、血脂(TG)、凝血功能(FIB)是孕期发生ICP的风险因素(P<0.05)。以上化验指标绘制的ROC曲线对发生ICP的风险有较好的预测价值。结论孕妇的部分临床特征及化验指标(ALT、TBIL、TG及FIB)是孕期发生ICP的风险因素。

关键词：妊娠期肝内胆汁淤积症风险因素预测

Flexible asymmetric supercapacitor with high energy density based on optimized MnO_2 cathode and Fe_2O_3 anode

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Chinese Chemical Letters 2019年第3期30卷 750-756页

作者： Weiwei liu Menghua Zhu jinghua liu Xin Li Jian liu Department of Chemistry and Chemical Engineering Harbin Institute of Technology State Key Lab of Urban Water Resource and Environment Harbin Institute of Technology College of Materials Science and Engineering Qingdao University of Science and Technology

All-so lid-state flexible supercapacitors have shown great potential in wearable and portable *** this work, a flexible asymmetric pseudocapacitor(FAPC) is fabricated by using MnO_2 nanosheetscarbon fabric as cathode and Fe_2O_3 nanowire-carbon fabric as anode in the presence of PVA-LiCl as gel electrolyte. With high area capacitances of MnO_2 and Fe_2O_3 based electrodes by optimizing the reaction conditions, the device shows high working potential of 1.8 V, high area capacitance of 83.3 mF/cm^2(119 F/g), stable cycling performance with 82.3% of capacitance retention after 5000 cycles, and a competitive energy density of 53.55 Wh/kg in the broader context of MnO_2-based supercapacitors. In addition, the FAPC demonstrates excellent mechanical stability and flexibility with negligible degradation of electrochemical performance after numerous bending tests, establishing it as a promising candidate for portable and wearable energy storage.

关键词： Flexible Asymmetric supercapacitor MnO2 Fe2O3 All-solid-state Optimization

Regional Specialization and Urban Development in England during the Industrial Revolution

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Social Sciences in China 2018年第1期39卷 199-216页

作者： liu jinghua Institute of European Civilization Tianjin Normal University

The Industrial Revolution led to the formation of a clear regional specialization in terms of production in England. Northwestern England developed into a modem industrial area, where the secondary industry sector was the main sector. London and its periphery in southeastern England developed mainly domestic and foreign trade, the financial industry and high-level service industry, all of which belong to the tertiary industry sector. The vast intermediate area between the northwest and the southeast mainly developed the first industry sector, namely commercial corn-animal husbandry. This regional economic specialization had a profound impact on urban development, under which the development of the three major regions showed different characteristics in terms of urban functions, city size and regional urban system. Specially, in the intermediate zone, there left traces of rural towns in the pre-industrial period.

关键词： England Industrial Revolution regional specialization urban development

Jeu de mots paronomasia:a StackOverflow‑driven bug discovery approach

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网络空间安全科学与技术(英文) 2023年第3期6卷 57-73页

作者： Yi Yang Ying Li Kai Chen jinghua liu SKLOIS Institute of Information EngineeringChinese Academy of SciencesBeijingChina School of Cyber Security University of Chinese Academy of SciencesBeijingChina

Locating bug code snippets(short for BugCode)has been a complex problem throughout the history of software security,mainly because the constraints that define BugCode are obscure and hard to ***,security analysts attempted to define such constraints manually(e.g.,limiting buffer size to detect overflow),but were limited to the types of *** researchers address this problem by extracting constraints from program documentation,which shows the potential for API *** for bugs beyond the scope of API misuse,such an approach becomes less effective since the corresponding constraints are not defined in documents,not to mention the programs without documentation In this paper,inspired by the fact that expert programmers often correct the BugCode on open forums such as StackOverflow,we design an approach to automatically extract knowledge from StackOverflow and leverage it to detect *** we all know,the contexts in StackOverflow come from ordinary *** writing tends to be loosely organized and in various styles,which are more challenging to analyze than program *** address the challenges,we design a custom tokenization approach to segment sentences and employ sentiment analysis to find the Controversial Sentences(CSs)that typically contain the constraints we need for code *** we use constituency parsing to extract knowledge from CSs,which helps locate *** evaluated our system on 41,144 comments from the questions tagged with Java and *** results show that our approach achieves 95.5%precision in discovering *** have discovered 276 pieces of BugCode proved to be true through manual validation including an assigned CVE.89.3%of the discovered bugs remained in the current version of answers,which are unknown to users.

关键词： Bug detection Natural language processing Open forum