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Estimation of spatiotemporal response of rooted soil using a machine learning approach

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2020年第6期21卷 462-477页

作者： zhi-liang cheng Wan-huan ZHOU zhi DING Yong-xing GUO State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering University of MacaoMacao SAR 999078China Zhuhai UM Science and Technology Research Institute Zhuhai 519000China Department of Civil and Environmental Engineering School of EngineeringZhejiang University City CollegeHangzhou 310015China Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China

In this study,a machine learning method,*** programming(GP),is employed to obtain a simplified statistical model to describe the variation of soil suction in drying cycles using five selected influential *** data used for model development was recorded by an in-situ *** image processing technology is used to quantify several tree canopy *** on four accuracy metrics,*** mean square error(RMSE),mean absolute percentage error(MAPE),coefficient of determination(R2),and relative error,the performance of the proposed GP model was *** results indicate that the model can give a reasonable estimation for the spatiotemporal variations of soil suction around a tree with acceptable *** sensitivity analysis for the statistical model obtained using limited data of a specific region demonstrates the drying time as the most influential variable and the initial soil suction as the second most influential variable for the soil suction variations.A case study was conducted using a set of assumed input variable values and validated that the simplified GP model can be used to estimate and predict the spatiotemporal variations of soil suction in rooted soil at a certain range.

关键词： Genetic programming(GP) Simplified statistical model Spatiotemporal variations Soil suction

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Optimal Energy Management for a Complex Hybrid Electric Vehicle:Tolerating Power-loss of Motor

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Journal of Shanghai Jiaotong university(Science) 2009年第4期14卷 476-481页

作者：张培智殷承良张勇吴志伟 School of Mechanical Engineering Shanghai Jiaotong University

The energy management may perform well under normal conditions, but may lead to poor behavior under abnormal situations. To tackle this problem, an optimal control strategy called rule-based equivalent fuel consumption minimization strategy （RECMS） is developed for a new complex hybrid electric vehicle （CHEV）. It optimizes the energy efficiency and drive performance to cater for normal and power-loss operations of the tractive motor. Firstly, the strategy formulates a novel objective function based on the equivalent fuel concept. By accounting for the actual fuel cost, the equivalent fuel cost for the electric machines and virtual fuel cost for the drivability, the cost function is obtained. Furthermore, some penalty factors are presented to optimize the performance target. Finally, experiments for a practical CHEV are performed to validate a simulation model. Then simulations are carried out for both rule-based and RECMS. The results show that the optimal energy management is working well.

关键词： optimal energy management hybrid electric vehicle control strategy equivalent fuel consumption Dower-loss

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Specific convulsions and brain damage in children hospitalized for Omicron BA.5 infection:an observational study using two cohorts

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World Journal of Pediatrics 2024年第10期20卷 1079-1089页

作者： Yuan-Yuan Pei Hong-Li Wang Gen-Quan Yin Yi Xu Jian-Hao Tan Xin-Hua liang Hui-Ying Wu Xun-Tao Yin Chun-Xiao Fang Jun-Zheng Peng zhi-Yuan Wu Yi Sun Run Dang Yu-Feng liang Hong-Mei Tang You-Yi Li Zhong-Xiang Qiao zhi-cheng liang Jian-Ping Tang Fan-Sen Zeng Ke-Lu Zheng Yi-Ru Zeng Xiao-Jun Cao Hui-Min Xia Jian-Rui Wei Jin-Ling Tang Si-Tang Gong Clinical Data Center Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Department of Gastroenterology Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Department of Internal Medicine Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Department of Infectious Diseases Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Information Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China School of Pediatrics Guangzhou Medical UniversityGuangzhou 510623China Imaging Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Respiratory Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Pediatric Intensive Care Unit Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangzhou510623China Neonatal Intensive Care Unit Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Rehabilitation Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China General Pediatrics Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China Emergency Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Department of Neurology Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Key Laboratory of Structural Birth Defects Research in Guangdong Province Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Cardiovascular Department Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou 510623China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShen

Background SARS-CoV-2 continues to mutate over time,and reports on children infected with Omicron BA.5 are *** aimed to analyze the specific symptoms of Omicron-infected children and to improve patient *** We selected 315 consecutively hospitalized children with Omicron BA.5 and 16,744 non-Omicron-infected febrile children visiting the fever clinic at our hospital between December 8 and 30,*** convulsions and body temperatures were compared between the two *** analyzed potential associations between convulsions and vaccination,and additionally evaluated the brain damage among severe Omicron-infected *** Convulsion rates(97.5%vs.4.3%,P<0.001)and frequencies(median:2.0 vs.1.6,P<0.001)significantly differed between Omicron-infected and non-Omicron-infected febrile *** body temperatures of Omicron-infected children were significantly higher during convulsions than when they were not convulsing and those of non-Omicron-infected febrile children during convulsions(median:39.5 vs.38.2 and 38.6℃,both P<0.001).In the three Omicron-subgroups,the temperature during convulsions was proportional to the percentage of patients and significantly differed(P<0.001),while not in the three non-Omicron-subgroups(P=0.244).The convulsion frequency was lower in the 55 vaccinated children compared to the 260 non-vaccinated children(average:1.8 vs.2.1,P<0.001).The vaccination dose and convulsion frequency in Omicron-infected children were significantly correlated(P<0.001).Fifteen of the 112 severe Omicron cases had brain *** Omicron-infected children experience higher body temperatures and frequencies during convulsions than those of non-Omicron-infected febrile *** additionally found evidence of brain damage caused by infection with omicron *** and prompt fever reduction may relieve symptoms.

关键词： Body temperature Brain damage:Children:Convulsion Omicron BA.5.Vaccination

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The Effects of Ground and Treadmill Running on Energy Metabolism and Muscle Contractile Properties:A Randomized Cross-Over Study

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Journal of Science in Sport and Exercise 2022年第2期4卷 109-118页

作者： Yuan Zhou Jian-gang Chen Xiao-long Li Xin-liang Pan Yi-zheng Zhou Zheng-ao Li zhi-cheng liang Jia-min Long Ming-ze Qin Jing Zhang Bing Shi Bing-jun Wan Ai-ping Chi Wen-fei Zhu Ke Ning Yu-liang Sun School of Physical Education Shaanxi Normal UniversityNo.620 West Chang’an StreetChang’an DistrictXi’an 710119ShaanxiChina School of Kinesiology Beijing Sport UniversityNo.48 Xinxi RoadHaidian DistrictBeijing 100084China

Purpose This study aimed to compare the effects of ground and treadmill running on energy metabolism and muscle con-tractile properties,providing a basis for the general public to choose running *** Ten male college students(age,20.10±1.53 years;height,176.20±5.49 cm;weight,72.14±8.25 kg;body fat percent,12.41%±4.65%)were recruited in this *** expenditure(EE)was measured using the accelerometer(GT9X)combined with specific estimation *** heart rate(HR)was measured using a heart rate band(Polar).Muscle contractile properties were assessed by measuring muscle displacement(Dm)and contraction velocity(Vc)using tensiomyography(TMG-S1).Blood glucose(Glu)and lactate(Lac)were measured by portable devices(eB-G and Lactate Scout).The running speed was 9 km/h and the duration was 25 ***-way ANOVA(protocol×time)was used to analyze the effect of running protocols on energy metabolism and muscle contractile *** EE of treadmill running was significantly higher than EE of ground running(protocol main effect,P0.05).Conclusion Our study found a difference in energy expenditure between treadmill and ground running at 9 km/h with duration of 25 *** addition,treadmills are more likely to cause a decrease in muscle displacement distance of the rectus femoris measured after exercise than ground *** studies are needed to further investigate whether the differences are induced by internal metabolism or the environmental cond

关键词： Ground running Treadmill running Energy expenditure Muscle contractile properties Blood glucose Blood lactate

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喷孔直径对水力喷射空气旋流器传质性能的影响

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高校化学工程学报 2014年第6期28卷 1405-1409页

作者：程治良徐飞全学军邱发成代黎重庆理工大学化学化工学院重庆400054

水力喷射空气旋流器(WSA)是一种高效的超重力气液传质设备,为了进一步提高其传质效率,通过理论分析和吹脱氨实验研究,对其喷孔直径进行了优化研究。采用因次分析法对实验数据进行了归纳,得到了脱氨传质系数KLa的经验公式为:KLa=2.77×10... 详细信息

水力喷射空气旋流器(WSA)是一种高效的超重力气液传质设备,为了进一步提高其传质效率,通过理论分析和吹脱氨实验研究,对其喷孔直径进行了优化研究。采用因次分析法对实验数据进行了归纳,得到了脱氨传质系数KLa的经验公式为:KLa=2.77×10-9uLI0-1Reg0.37ReL1.18Wel-1.05,运用该式可较好地预测喷孔直径对WSA脱氨传质性能的影响。研究发现,当废水射流流速恒定时,KLa随喷孔直径增大而增大,但当超过某一直径时,其增幅减小。综合考虑过程的能耗与传质效果之间的关系,喷孔直径的最佳取值应按dh=l06.39设计计算,l0为WSA的环隙宽度。

关键词：吹脱法氨氮射-旋流耦合场气液传质

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试论政府过程再造

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软科学 2006年第1期20卷 57-59页

作者：张承伟程志亮大连理工大学管理学院辽宁大连116024 大连高新区规划国土局辽宁大连116023

结合我国政府过程的实际和电子政府建设的实践,提出了政府过程再造概念。阐述了政府过程再造的特点、意义,建立了政府过程再造的初步理论框架。

关键词：政府过程过程再造政府过程再造电子政府

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分离空间结构对旋流器流场和传质面积的影响

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化学工程 2017年第3期45卷 52-58,63页

作者：程治良邱发成徐飞全学军李瑞恒重庆理工大学化学化工学院重庆400054

为了揭示分离空间结构对水力喷射空气旋流器(WSA)的气液传质性能影响作用机理,采用雷诺应力模型(RSM)和流体体积多相流(VOF)模型对圆柱型和柱锥结合型水力喷射空气旋流器内部耦合场进行了数值模拟,并以CO_2-NaOH化学吸收体系测定了这2... 详细信息

为了揭示分离空间结构对水力喷射空气旋流器(WSA)的气液传质性能影响作用机理,采用雷诺应力模型(RSM)和流体体积多相流(VOF)模型对圆柱型和柱锥结合型水力喷射空气旋流器内部耦合场进行了数值模拟,并以CO_2-NaOH化学吸收体系测定了这2种分离空间结构WSA的有效比相界面积。结果表明:分离空间结构对WSA内的射-旋流耦合场中轴向、切向和径向速度分布都有较大影响。柱锥结合型WSA的耦合场具有较高的切向速度、较低的轴向速度和较稳定的径向速度;而圆柱型WSA的耦合场具有较大的轴向速度、较小的切向速度和稳定性较小的径向速度场。与圆柱型WSA相比,柱锥结合型WSA的流体湍动能和有效比相界面积高于前者,这是后者传质效率高的主要原因。

关键词：水力喷射空气旋流器气液两相流分离计算机模拟流场分析

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水力喷射空气旋流器吹脱处理挥发性有机物废水

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现代化工 2019年第9期39卷 176-180页

作者：李勇程治良全学军罗丹国家电投远达环保工程有限公司重庆科技分公司重庆401122 重庆理工大学化学化工学院重庆400054 重庆市生活垃圾资源化处理协同创新中心重庆401331

采用超重力气液传质设备水力喷射空气旋流器(WSA)对乙苯模拟的VOC废水进行吹脱处理,考察了废水初始浓度、进口气速、射流流速、废水温度等因素对处理过程传质效率的影响。结果表明,进口气速越大、废水温度越高,VOC吹脱去除传质效率越高... 详细信息

采用超重力气液传质设备水力喷射空气旋流器(WSA)对乙苯模拟的VOC废水进行吹脱处理,考察了废水初始浓度、进口气速、射流流速、废水温度等因素对处理过程传质效率的影响。结果表明,进口气速越大、废水温度越高,VOC吹脱去除传质效率越高;射流流速加大,VOC的吹脱处理效率先增大后保持不变;废水初始浓度对VOC的吹脱去除效率影响较小。初始浓度为45 mg/L的VOC废水,采用WSA吹脱处理3 min后,VOC的去除率可高达99%以上,气液传质效率是曝气柱等传统设备的2倍以上。

关键词：乙苯废水处理空气吹脱气体旋流器

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利多卡因纳米乳制备及体外经皮吸收的实验研究

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南方医科大学学报 2010年第3期30卷 451-454页

作者：朱晓亮李国锋曾抗陈志良南方医科大学南方医院皮肤科广东广州510515 南方医科大学南方医院药学部广东广州510515

目的制备5%利多卡因纳米乳,考察利多卡因纳米乳对离体大鼠皮肤的透皮能力。方法伪三元相图法结合origin软件分析确定制备5%利多卡因纳米乳的最佳Km值(表面活性剂/助表面活性剂比值)及各组份比例;Zeta粒度分析仪测定纳米乳粒径大小及分... 详细信息

目的制备5%利多卡因纳米乳,考察利多卡因纳米乳对离体大鼠皮肤的透皮能力。方法伪三元相图法结合origin软件分析确定制备5%利多卡因纳米乳的最佳Km值(表面活性剂/助表面活性剂比值)及各组份比例;Zeta粒度分析仪测定纳米乳粒径大小及分布范围;透射电镜观察纳米乳形态及体系类型;采用改良Franz扩散池联用高效液相色谱(HPLC)比较含5%利多卡因的纳米乳、凝胶和酊剂的累积透皮吸收量Q和表观皮肤透皮速率(Kp)值,分析利多卡因纳米乳的透皮渗透类型。结果利多卡因纳米乳平均粒径为(29.8±14.4)nm,其中98%的粒径范围介于15.1～45.5nm之间,2%介于77.9～261.3nm之间;纳米乳体系为大小不均的球形多分散体系;纳米乳的Kp值(3.07±0.74cm·h-1)显著高于凝胶[(1.27±0.35)cm·h-1]和酊剂[(0.97±0.18)cm·h-1],纳米乳的透皮速率为[(69.82±7.48)μg·cm-2·h-1],透皮过程符合零级释放动力学过程。结论伪三元相图法结合origin软件分析确定纳米乳各组份比例的方法简便、准确,马尔文粒径测定结合透射电镜观察测定纳米乳的粒径、分布、形态及体系类型的方法较为全面,利多卡因纳米乳有较强的透皮能力,有望成为新型皮肤局麻透皮给药制剂。

关键词：利多卡因纳米乳透皮吸收

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财政文化支出如何影响居民主观幸福感——基于CGSS2013调查数据的分析

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山西财经大学学报 2017年第7期39卷 1-13页

作者：倪志良成前王鸿儒南开大学经济学院/中国特色社会主义经济建设协同创新中心天津300071

利用CGSS2013调查数据,实证分析了财政文化支出对居民主观幸福感的影响。研究发现:财政文化支出增加有利于提升居民主观幸福感,但这一影响存在显著的人群异质性;财政文化支出主要通过居民认知水平和居民生活质量两个渠道,对居民主观幸... 详细信息

利用CGSS2013调查数据,实证分析了财政文化支出对居民主观幸福感的影响。研究发现:财政文化支出增加有利于提升居民主观幸福感,但这一影响存在显著的人群异质性;财政文化支出主要通过居民认知水平和居民生活质量两个渠道,对居民主观幸福感产生了提升作用;不同的文化要素对居民主观幸福感的提升作用存在差异,经济地位、社会态度、生活方式、阶级认同和道德素养五个要素的作用效果依次递减。

关键词：财政文化支出主观幸福感生活质量居民认知水平

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