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Applied Mathematics and Mechanics(English Edition) 2019年第5期40卷 649-678页

作者： Houjun KANG Tieding GUO Weidong ZHU Junyi SU bingyu zhao Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures Hunan University Department of Mechanical Engineering University of Maryland College of Civil Engineering Hunan University

A dynamic model for an inclined carbon ?ber reinforced polymer(CFRP)cable is established, and the linear and nonlinear dynamic behaviors are investigated in detail. The partial differential equations for both the in-plane and out-of-plane dynamics of the inclined CFRP cable are obtained by Hamilton's principle. The linear eigenvalues are explored theoretically. Then, the ordinary differential equations for analyzing the dynamic behaviors are obtained by the Galerkin integral and dimensionless *** steady-state solutions of the nonlinear equations are obtained by the multiple scale method(MSM) and the Newton-Raphson method. The frequency-and force-response curves are used to investigate the dynamic behaviors of the inclined CFRP cable under simultaneous internal(between the lowest in-plane and out-of-plane modes) and external resonances, i.e., the primary resonances induced by the excitations of the in-plane mode,the out-of-plane mode, and both the in-plane mode and the out-of-plane mode, respectively. The effects of the key parameters, e.g., Young's modulus, the excitation amplitude,and the frequency on the dynamic behaviors, are discussed in detail. Some interesting phenomena and results are observed and concluded.

关键词： inclined carbon fiber reinforced polymer(CFRP)cable bifurcation nonlinear dynamics internal resonance external resonance

Multi-source Data-driven Identification of Urban Functional Areas:A Case of Shenyang,China

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Chinese Geographical Science 2023年第1期33卷 21-35页

作者： XUE Bing XIAO Xiao LI Jingzhong zhao bingyu FU Bo Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China Key Lab for Environmental Computation and Sustainability of Liaoning Province Shenyang 110016China University of Chinese Academy of Sciences Beijing 100049China College of Urban Planning and Architecture Xuchang UniversityXuchang 461000China

Urban functional area(UFA)is a core scientific issue affecting urban *** current knowledge gap is mainly reflected in the lack of multi-scale quantitative interpretation methods from the perspective of human-land *** this paper,based on multi-source big data include 250 m×250 m resolution cell phone data,1.81×105 Points of Interest(POI)data and administrative boundary data,we built a UFA identification method and demonstrated empirically in Shenyang City,*** argue that the method we built can effectively identify multi-scale multi-type UFAs based on human activity and further reveal the spatial correlation between urban facilities and human *** empirical study suggests that the employment functional zones in Shenyang City are more concentrated in central cities than other single functional *** are more mix functional areas in the central city areas,while the planned industrial new cities need to develop comprehensive functions in *** have scale effects and human-land interaction *** suggest that city decision makers should apply multi-sources big data to measure urban functional service in a more refined manner from a supply-demand perspective.

关键词： human-land relationship multi-source big data urban functional area identification method Shenyang City

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山西省非贲门胃癌遗传流行病学研究

肿瘤预防与治疗 2024年第7期37卷 578-584页

作者：郭雪蓉赵冰玉韩小友王媛马朝辉山西省肿瘤医院/中国医学科学院肿瘤医院山西医院/山西医科大学附属肿瘤医院肿瘤防控办公室太原030013

目的:通过对特定人群开展的遗传流行病学调查,探讨遗传、环境因素在山西省非贲门胃癌发生中的作用,为非贲门胃癌的病因学研究、早期预防和早期治疗提供科学的依据。方法:本研究采用病例对照研究设计,并分别对病例组、对照组开展家系资... 详细信息

目的:通过对特定人群开展的遗传流行病学调查,探讨遗传、环境因素在山西省非贲门胃癌发生中的作用,为非贲门胃癌的病因学研究、早期预防和早期治疗提供科学的依据。方法:本研究采用病例对照研究设计,并分别对病例组、对照组开展家系资料收集。共收集到在山西省肿瘤医院住院的426例非贲门胃癌有效病例。对其中379例病例按照1∶1配对方式建立对照,了解病例和对照的亲属中恶性肿瘤发病情况,做家族聚集性分析。应用Li-Mante-Gart法对426个先证者家系做分离分析,采用Falconer法计算遗传度,应用Greenwood和Yule法做出生顺序分析。结果:非贲门胃癌先证者家系非贲门胃癌患病率Ⅰ级亲属>Ⅱ级亲属>Ⅲ级亲属(χ^(2)=37.065,P<0.001),提示山西省非贲门胃癌的发生情况具有家族聚集性;Li-Mantel-Gart法做分离分析,分离比为0.021(95%CI:0.018~0.024),结果显示非贲门胃癌属于多基因遗传性疾病。Ⅰ级亲属遗传度为11.10%±5.05%,提示遗传因素的作用是山西省非贲门胃癌的发病原因之一,但不是主要因素;出生顺序分析显示山西省非贲门胃癌的发生与出生顺序的先后是有关系的,更易发生于出生顺序较早者,提示环境因素对非贲门胃癌的发生有一定的影响作用。结论:在山西省,非贲门胃癌的发生情况具有家族聚集性倾向,遗传因素主导因素起一定作用,但不是主要作用,环境因素的影响更大。

关键词：非贲门胃癌遗传流行病学分离分析遗传度出生顺序研究

Research on analysis method for temperature control information of high arch dam construction

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Science China(Technological Sciences) 2011年第S1期54卷 40-46页

作者： ZHONG DengHua,zhao ChenSheng & REN bingyu Department of Hydraulic and Hydroelectric Engineering,School of Civil Engineering,Tianjin University,Tianjin 300072,China 1. Department of Hydraulic and Hydroelectric Engineering School of Civil Engineering Tianjin University Tianjin 300072 China

Temperature control,which is directly responsible for the project quality and progress,plays an important role in high arch dam *** to discover the rules from a large amount of temperature control information collected in order to guide the adjustment of temperature control measures to prevent cracks on site is the key scientific *** this paper,a mathematic logical model was built firstly by means of a coupling analysis of temperature control system decomposition and coordination for high arch ***,an analysis method for temperature control information was presented based on data mining ***,the data warehouse of temperature control was designed,and the artificial neural network forecasting model for the highest temperature of concrete was also ***,these methods were applied to a practical project. The result showed that the efficiency and precision of temperature control was improved,and rationality and scientificity of management and decision-making were *** of these researches provided an advanced analysis method for temperature control in the high arch dam construction process.

关键词： high arch dam construction temperature control information data mining data warehouse neural network model

The action mechanism by which C1q/tumor necrosis factor-related protein-6 alleviates cerebral ischemia/reperfusion injury in diabetic mice

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Neural Regeneration Research 2024年第9期19卷 2019-2026页

作者： Bo zhao Mei Li bingyu Li Yanan Li Qianni Shen Jiabao Hou Yang Wu Lijuan Gu Wenwei Gao Department of Anesthesiology Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina Central Laboratory Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina Department of Critical Care Medicine Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Studies have shown that C1q/tumor necrosis factor-related protein-6 (CTRP6) can alleviate renal ischemia/reperfusion injury in mice. However, its role in the brain remains poorly understood. To investigate the role of CTRP6 in cerebral ischemia/reperfusion injury associated with diabetes mellitus, a diabetes mellitus mouse model of cerebral ischemia/reperfusion injury was established by occlusion of the middle cerebral artery. To overexpress CTRP6 in the brain, an adeno-associated virus carrying CTRP6 was injected into the lateral ventricle. The result was that oxygen injury and inflammation in brain tissue were clearly attenuated, and the number of neurons was greatly reduced. In vitro experiments showed that CTRP6 knockout exacerbated oxidative damage, inflammatory reaction, and apoptosis in cerebral cortical neurons in high glucose hypoxia-simulated diabetic cerebral ischemia/reperfusion injury. CTRP6 overexpression enhanced the sirtuin-1 signaling pathway in diabetic brains after ischemia/reperfusion injury. To investigate the mechanism underlying these effects, we examined mice with depletion of brain tissue-specific sirtuin-1. CTRP6-like protection was achieved by activating the sirtuin-1 signaling pathway. Taken together, these results indicate that CTRP6 likely attenuates cerebral ischemia/reperfusion injury through activation of the sirtuin-1 signaling pathway.

关键词： brain C1q/tumor necrosis factor-related protein-6 cerebral apoptosis diabetes inflammation ischemia/reperfusion injury neuron neuroprotection oxidative damage Sirt1

Profoundly entwined ecosystem services,land-use change and human well-being into sustainability management in Yushu,Qinghai-Tibet Plateau

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Journal of Geographical Sciences 2022年第9期32卷 1745-1765页

作者： LIU Mengxue GAO Ya WEI Hejie DONG Xiaobin zhao bingyu WANG Xue-Chao ZHANG Peng LIU Ranran ZU Xinyu State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing100875China Beijing Normal University Beijing100875China College of Resources Science and Technology Beijing Normal UniversityBeijing100875China College of Resources and Environmental Sciences Henan Agricultural UniversityZhengzhou450002China School of Information Engineering China University of GeosciencesBeijing100083China

The nexus exploration among land use/land cover change,ecosystem services and human well-being has been increasingly crucial in the context of Future ***,the spatial heterogeneity and the entwining process among these three aspects have not yet been in-depth and systematically *** we identified the spatiotemporal pattern of ecosystem services during the past 20 years in Yushu,the eco-fragile region and the centre of Qinghai-Tibet Plateau,as well as clarified its relationships with land use change and human *** revealed that:(1)The structure of the ecosystem and land use in this area have been increasingly stable,and the ecological projects have exerted a positive impact.(2)Although the ecological environmental issues still need more attention,the ecosystem services of the area have been positively developing.(3)Derived by the ecosystem services increase,environmental projects and policies,the human well-beings of culture and education performed much better than other aspects.(4)It is crucial to carry out long-term ecological projects and increase educational investment for maintaining the stability of this ecologically fragile *** study provides significant support for the regional ecological sustainability decision making,especially for the Qinghai-Tibet Plateau,the roof of the world.

关键词： eco-fragile region Land use/land cover change ecosystem services human well-being Qinghai-Tibet Plateau

地理大数据中POI数据质量的评估与提升方法

维普期刊数据库评论

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地理学报 2023年第5期78卷 1290-1303页

作者：薛冰赵冰玉李京忠中国科学院沈阳应用生态研究所沈阳110016 辽宁省环境计算与可持续发展重点实验室沈阳110016 德国柏林工业大学规划建筑学院德国柏林106234 许昌学院城乡规划与园林学院许昌461000

地理大数据实现对区域人地系统的精细刻画,为研究人地关系和区域发展等提供新的数据。当前,地理大数据进入了广泛应用,但一直缺乏对其质量的考察及相应的评估方法。兴趣点(POI)数据是地理大数据重要组成部分,对基于位置服务和区域场景... 详细信息

地理大数据实现对区域人地系统的精细刻画,为研究人地关系和区域发展等提供新的数据。当前,地理大数据进入了广泛应用,但一直缺乏对其质量的考察及相应的评估方法。兴趣点(POI)数据是地理大数据重要组成部分,对基于位置服务和区域场景理解具有重要作用。本文提出POI类大数据评估与提升方法,基于场地调研、GIS等方法从地物识别完整率、数据冗余率和空间位置准确率3个维度实现质量评估;基于数据生产过程发现和总结数据质量的可能影响因素,证明多源数据融合是提升POI数据质量的有效手段。研究发现,基于API接口获取的高德数据量略高于百度,空间位置准确率相当,冗余率较低;高德侧重识别地物入口,适于可达性等分析;百度侧重发现非标志性地物,适于空间规划等分析;发现、采集和处理阶段是降低数据质量的可能环节,受数据保护机制影响,数据质量与获取量及面积成反比;多源异构地理大数据质量评估、提升与融合是提升数据“涌现价值”、促进多学科交叉融通、解决新时代地理学问题的关键途径之一。

关键词： POI数据地理大数据数据质量评估场地调研 GIS

地理学视角下城市复杂性研究综述——基于近20年文献回顾

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地理科学进展 2022年第1期41卷 157-172页

作者：薛冰赵冰玉李京忠中国科学院沈阳应用生态研究所沈阳110016 辽宁省环境计算与可持续发展重点实验室沈阳110016 中国科学院大学北京100049 许昌学院城乡规划与园林学院河南许昌461000

城市作为组织结构复杂的开放人地地域系统,一直是地理学的研究核心之一。论文以2000—2020年相关文献为数据源,构建一套定量分析与定性认知相结合的文献分析判读体系,基于地理学视角从概念内涵、研究主题、技术方法等方面综述城市复杂... 详细信息

城市作为组织结构复杂的开放人地地域系统,一直是地理学的研究核心之一。论文以2000—2020年相关文献为数据源,构建一套定量分析与定性认知相结合的文献分析判读体系,基于地理学视角从概念内涵、研究主题、技术方法等方面综述城市复杂性研究成果并开展讨论。过去20 a来,中国的城市复杂性研究逐渐从单尺度的格局、过程和机制研究转向于多尺度下复杂交互过程的集成与综合研究,并逐步形成了城市设施网络、城市人居环境、城市经济活动以及城市空间治理4个主要主题,在数据方法上逐步转向于空间技术及社会计算支持下的全景式全生命周期数据支撑的多维场景化分析。今后及未来一段时期,地理学视角下的城市复杂性研究需要进一步加强城市数字基础设施建设及全周期信息采集能力,加深对城市生态经济体系的综合测度及监控,增强跨区域发展机制影响下的城市流空间研究。

关键词：城市复杂性人地关系城市地理城市空间结构城市治理

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热力管道小漏温度场特征标定研究

土木建筑与环境工程 2016年第2期38卷 97-103页

作者：黄冬冬李素贞赵冰玉同济大学土木工程学院上海200092

泄漏特别是小漏预警对热力管道的安全维护具有重要意义。受空间分辨率的影响,分布式光纤传感器对小漏引起的局部温度变化测试精度较低,测量温度与实际温度差异较大。以布里渊光时域反射仪(BOTDR)作为测量手段,提出了一种建立分布式光纤... 详细信息

泄漏特别是小漏预警对热力管道的安全维护具有重要意义。受空间分辨率的影响,分布式光纤传感器对小漏引起的局部温度变化测试精度较低,测量温度与实际温度差异较大。以布里渊光时域反射仪(BOTDR)作为测量手段,提出了一种建立分布式光纤测量温度与实际温度之间对应关系的方法。设计完成了小漏温度场模拟测量实验,通过高斯拟合对测量数据进行特征提取,再用人工神经网络建立测量温度与实际温度的映射模型。结果表明:设计的实验方案可获得代表管道小漏温度分布的先验数据,基于此训练的人工神经网络可确立实际温度场与BOTDR测量温度场的对应关系,提高了光纤测试精度并为泄漏预警策略的制定提供了依据。

关键词：管道泄漏布里渊散射高斯拟合人工神经网络

Assessment of genetic diversity of Xanthomonas oryzae ***

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Chinese Rice Research Newsletter 2000年第4期8卷 7-8页

作者： WANG Chunlian ZHANG Qi ZHOU Yongli zhao bingyu zhao Kaijun,Inst of Crop Breeding and Cultivation,Key Lab of Crop Genetic & Breeding of Ministry of Agriculture,CAAS,Beijing 100081,China Key Lab of Crop Genetic & Breeding of Ministry of Agriculture CAAS Beijing 100081 China

Bacterial blight of rice,caused by Xanthomonas ***(Xoo.),is one of the major rice diseases *** clear the shift of genetic diversity of the

关键词： Assessment of genetic diversity of Xanthomonas oryzae pv.oryzae