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基于Java平台的超大发电装备运载线路数值测试方法

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三峡大学学报（自然科学版） 2024年第2期46卷 98-105页

作者：付俊峰魏博文黄佩兵李志伟黄子胜李玥康中国电建集团江西省水电工程局有限公司南昌330096 南昌大学工程建设学院南昌330031

针对超大发电装备车载运输前的避障预判难且缺乏相关工程措施指导依据等难题,提出了一种基于Java平台的超大发电装备运载线路数值测试方法.选取某山地超长风电装备运输情景为实验对象,在分析超长风电装备车辆行经复杂山地弯道可避障姿... 详细信息

针对超大发电装备车载运输前的避障预判难且缺乏相关工程措施指导依据等难题,提出了一种基于Java平台的超大发电装备运载线路数值测试方法.选取某山地超长风电装备运输情景为实验对象,在分析超长风电装备车辆行经复杂山地弯道可避障姿态的基础上,建立了运载车辆与风电装备联立式运动数学模型及参数范围,给出了基于机载liDAR扫描技术获取山地点云数据的模型边界条件构建方法,并运用Java程序平台研发了超大发电装备运输线路数值测试方法.由其数值实验与工程现场测试结果对比分析表明,本文所提出的数值测试方法与工程现场测试结果高度吻合且能准确给出障碍路段的碰撞范围及体量,可为复杂地形下超大发电装备运输通行前避障预判与道路优化设计提供有效依据.

关键词：超大发电装备运载线路 Java平台数值测试

毫针速刺法联合推拿对颈源性眩晕患者脑血流动力学的影响

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现代中西医结合杂志 2024年第7期33卷 917-921,927页

作者：何雷黄谦张磊李志伟南京中医药大学连云港附属医院江苏连云港222000

目的观察毫针速刺法联合推拿治疗颈源性眩晕的疗效及对椎-基底动脉血流动力学的影响。方法研究纳入2021年6月—2022年12月于南京中医药大学连云港附属医院就诊的颈源性眩晕患者78例,随机分为试验组38例、对照组40例。试验组采用毫针速... 详细信息

目的观察毫针速刺法联合推拿治疗颈源性眩晕的疗效及对椎-基底动脉血流动力学的影响。方法研究纳入2021年6月—2022年12月于南京中医药大学连云港附属医院就诊的颈源性眩晕患者78例,随机分为试验组38例、对照组40例。试验组采用毫针速刺法联合推拿治疗,由斜方肌起点部条索状痛性结节进针,刺向枕骨和寰椎之间的寰枕筋膜,隔天1次,与推拿治疗交替进行,各治疗7次;对照组予盐酸氟桂利嗪胶囊10 mg每晚口服,连续服用14 d。比较2组患者治疗前后改良颈性眩晕症状与功能评估量表(ESCV)评分、眩晕残障程度评定量表(DHI)评分、椎-基底动脉血流速度,并评定2组临床疗效。结果与治疗前比较,2组患者ESCV评分均明显升高(P均0.05)。试验组总有效率为94.7%(36/38),明显高于对照组的85.0%(34/40),差异有统计学意义(P<0.05)。结论毫针速刺法联合推拿治疗对颈源性眩晕患者平衡功能有正向调节作用,可实现对椎-基底动脉血流的双向调节,提高患者的生活质量,相对口服盐酸氟桂利嗪胶囊具备一定优势。

关键词：颈源性眩晕毫针速刺法推拿椎-基底动脉血流动力学

讲好“中国铁路故事” 弘扬高铁“工匠精神”——轨道交通车辆工程课程思政教学的探索与实践

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高教学刊 2024年第3期10卷 21-24页

作者：黄尊地常宁李志伟黄莎五邑大学轨道交通学院广东江门529020

轨道交通车辆工程课程教学团队在多年课程建设的基础上进行课程思政教学的探索与实践。课程围绕“知识传授、能力培养与价值引领相结合”的课程思政教学目标,构建宣传轨道交通国家战略、讲好“中国铁路故事”、弘扬“高铁精神”和传承... 详细信息

轨道交通车辆工程课程教学团队在多年课程建设的基础上进行课程思政教学的探索与实践。课程围绕“知识传授、能力培养与价值引领相结合”的课程思政教学目标,构建宣传轨道交通国家战略、讲好“中国铁路故事”、弘扬“高铁精神”和传承铁路工程师文化等课程思政内容体系。合理设计课程思政教学体系,将课程思政内容进大纲、进课程、进课堂,落实到教学设计、融入到教学环节、深入到学生头脑,提升学生职业规范,培养学生精益求精的大国工匠精神,激发学生科技报国的家国情怀和使命担当。

关键词：轨道交通车辆工程课程思政高铁精神工匠精神中国铁路故事

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三维超声风速计阴影补偿方法研究

传感器与微系统 2024年第10期43卷 42-45页

作者：葛玮汤浩仝德之李志伟付丽疆郭亚江南大学轻工过程先进控制教育部重点实验室江苏无锡214122 江南大学物联网工程学院江苏无锡214122 绿视芯科技(无锡)有限公司江苏无锡214000

三维风速计在众多领域有重要的价值,但三维超声风速计自身结构影响待测量风场,导致阴影效应的产生,从而引起测量误差。现有的阴影补偿方法研究多从阵列结构上优化或局限于二维风速风向,在应用到三维测风中效果较差。针对该问题,本文利... 详细信息

三维风速计在众多领域有重要的价值,但三维超声风速计自身结构影响待测量风场,导致阴影效应的产生,从而引起测量误差。现有的阴影补偿方法研究多从阵列结构上优化或局限于二维风速风向,在应用到三维测风中效果较差。针对该问题,本文利用随机森林回归算法建立三维超声风速计阴影补偿方法,通过有限元仿真获取受阴影效应影响后的风速风向数据,以该数据为样本,对模型进行训练和测试。结果表明:本文提出的阴影补偿方法将风速值与理论值的相对误差降低到±1%以内,垂直风向角的平均相对误差从-4.1%降低至0.08%,水平风向角的平均相对误差从1.9%降低至-0.8%,验证了本文提出的补偿方法在解决阴影效应问题方面的可行性。

关键词：三维风速计阴影补偿方法随机森林回归算法有限元分析

玉米须多糖对肉兔生长性能、免疫功能和抗氧化能力的影响

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中国饲料 2024年第18期 25-28页

作者：李志伟段晓林朱世蝶韩艳杰漯河市农业科学院河南漯河462300 郸城县农业农村局河南郸城477150 漯河市动物疫病预防控制中心河南漯河462000

文章旨在研究玉米须多糖对肉兔生长性能、免疫功能和抗氧化能力的影响,试验选取体重相近、体况良好的新西兰肉兔180只,雌雄各半,随机分成4组,每组5个重复,每个重复9只肉兔,对照组饲喂基础日粮,玉米须多糖1、2、3组饲喂基础日粮的同时添... 详细信息

文章旨在研究玉米须多糖对肉兔生长性能、免疫功能和抗氧化能力的影响,试验选取体重相近、体况良好的新西兰肉兔180只,雌雄各半,随机分成4组,每组5个重复,每个重复9只肉兔,对照组饲喂基础日粮,玉米须多糖1、2、3组饲喂基础日粮的同时添加500、1000、2000 mg/kg玉米须多糖。结果可见,生长性能指标显示,玉米须多糖2组较对照组平均日增重显著提高(P<0.05),料重比显著降低(P<0.05);免疫指标显示,玉米须多糖2组和3组的血清免疫球蛋白IgA、IgM和白细胞介素-4较对照组均显著提高(P<0.05);抗氧化指标显示,玉米须多糖2组和3组的总抗氧化能力、谷胱甘肽过氧化物酶与对照组相比均显著提高(P<0.05),丙二醛显著降低(P<0.05)。结果表明,饲料中添加剂玉米须多糖可以提高肉兔的生长性能和抗氧化能力,提高血清免疫球蛋白质水平。本试验条件下肉兔饲料中添加1000 mg/kg玉米须多糖效果较好。

关键词：玉米须多糖肉兔生长性能免疫功能抗氧化能力

Study on the Phosphorus Enrichment and Bioavailability in Runoff Sediments of Slope Farmland

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Study on the Phosphorus Enrichment and Bioavailability in Ru...

Two-dimensional modeling of channel evolution under the influence of large-scale river regulation works

2011 International Symposium on Water Resource and Environmental Protection(ISWREP 2011)

作者： CUI lituo li zhiwei Department of ecology Environmental Management College of China Ocean college Hebei Agriculture University

ISBN: (纸本)9781612843377

The enrichment and its bioavailability of phosphorus in runoff sediments were studied by a simulated rainfall experiment and regress *** results showed that runoff sediments had an obvious enrichment effect on phosphorus and its enrichment coefficient （EC） was1.33～*** inorganic phosphorus was the main phosphours forms in runoff sediments,accounting for 75.23% of total phosphorus （TP）.Different binded phosphorus enrichmench and bioavailability was *** different forms of phosphorus,phosphorus binded with iron （Fe-P） made the greatest contribution to the content of bioavailable phosphorus in runoff sediments,followed by the organic phosphorus （Org-P）.

关键词： runoff sediments phosphorus enrichment bioavailability

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International Journal of Sediment Research 2022年第4期37卷 424-434页

作者： Meirong Zhou Junqiang Xia Shanshan Deng zhiwei li State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University

In the middle and lower reaches of alluvial rivers, various kinds of river regulation projects affecting natural channel evolution often are distributed due to the requirements of flood control, navigation,and channel stability. However, the influence of large-scale river regulation works on fluvial processes is not fully known. Therefore, a two-dimensional(2D) morphodynamic model has been improved to address this problem. The new detailed procedure is presented in this paper:(i) First, each node in the study domain was labeled using a specified point code to distinguish the zones with or without regulation works; and(ii) second, a 2D model was improved to consider the effect of river regulation works. In the refined model, the modules of sediment transport and bed deformation were treated separately in different zones. In the unprotected zones, both bed deposition and erosion were likely to occur. In the protected zones, bed erosion could not occur owing to the protection provided by the river regulation works, unless there was a deposition layer newly formed over the previous simulation periods. The observed data of the years 2004 and 2008 were used to calibrate and verify the improved 2D morphodynamic model which was applied in a 68-km-long reach of the Middle Yangtze River. Satisfactory results were obtained indicating that the improved model can better simulate the process of sediment transport and the morphology adjustment in three central bars in the study reach.

关键词： Two-dimensional model River regulation works Channel evolution Central bar Middle Yangtze River

Impacts of dams and land-use changes on hydromorphology of braided channels in the Lhasa River of the Qinghai-Tibet Plateau,China

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International Journal of Sediment Research 2022年第2期37卷 214-228页

作者： Yuchi You zhiwei li Peng Gao Tiesong Hu School of Hydraulic Engineering Changsha University of Science & Technology State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Department of Geography and the Environment Syracuse University

Among braided rivers developed on the Qinghai-Tibet Plateau of China at very high elevations(>3,500 m),the middle and lower reaches of the Lhasa River have been affected by comprehensive human activities mainly involving dam construction,urbanization,farming,afforestation,and *** the current study,the impacts of these human activities on hydrology and morphology of the four braided reaches downstream of a cascaded of two dams are *** study period was divided into 1985-2006(P1),2006-2013(P2),and 2013-2019(P3),representing the natural and changed flow regimes by *** available daily discharge data at two stations within the four braided reaches,dam-induced hydrological alteration was analyzed based on the indicators of hydrologic alteration and range of variability approach and key discharge proxies were *** sensed images also were selected in the three periods and morphological metrics extracted from them were compared for the four reaches among these *** hydrological regimes were found for only two *** total channel width(Wc) and braiding intensity(BIt) followed different temporal trends among the four *** average shift rates of the main channel in the four reaches were higher in the short(P2-P3) than in the long(P1-P2 and P1-P3) *** longitudinal changes of Wcand the number of channels did not have any identifiable trend among the four *** linking the morphological changes to quantified spatial and temporal patterns of various human activities,it was found that(1) the two dams had insignificant impact on channel morphology,suggesting that the studied braided river might have a short relaxation time and(2) the evolutional trajectories of morphological changes in most of the four reaches were similar,suggesting that temporal trends of morphological changes due to complex human activities are not affected by the different physiographic settings of the *** exploitati

关键词： Braided river Channel morphology Human activities Dam impact

Modelling of cantilever bank failure for peat-type meander bends in the source region of the Yellow River

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International Journal of Sediment Research 2023年第3期38卷 421-431页

作者： Hanyuan Yang zhiwei li Yongjun Lu Huaixiang liu liqin Zuo State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research Institute Yangtze Institute for Conservation and Development

Bank retreat involving a combination of fluvial erosion and bank collapse has been found to be a major contributor to sediment transport, lateral migration, and planform evolution of meandering *** studies have largely examined the general mechanism of cantilever bank failure. However, the composite process of beam(toppling) failure caused by shear failure of the lower part composed of noncohesive soil remains poorly understood. The current paper investigates the diversity and coupling of this collapse process, which is the dominant pattern in the peat-type meandering rivers of the Zoige River basin in the source region of the Yellow River. For this purpose, morphologic and hydraulic measurements were done in the summers of 2016 and 2017. Moreover, a combined method of a theoretical model and numerical simulation was developed to be applied for a continuous meandering channel in the Zoige basin, focusing in particular on five typical cross sections of a highly convoluted bend approaching neck cutoff. Specifically, the theoretical model evaluating the stability of overhanging riverbank was based on static equilibrium theory considering the interaction between composite soil layers. In addition, the Bank Stability and Toe Erosion Model was used to simulate the retreat process of the silt layer based on field measurements including bank morphology, soil composition, and hydrological parameters. Thus, a calculation method for the occurrence of cantilever beam failure in the flood period is proposed, and temporal change and spatial variability in bank profiles caused by three consecutive failures is estimated at the five sections. Satisfactory results showed a relatively close agreement between the calculations and field measurements in terms of the width of the overhanging arms and the dimensions of the slump blocks.

关键词： River bends Bank erosion Cantilever failure Numerical simulation Meandering river