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基于CatBoost-NSGA-Ⅲ的盾构隧道施工参数分析及优化控制

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隧道建设（中英文） 2024年第8期44卷 1587-1598页

作者：陈礼博张明书陈海勇吴贤国曹源中铁开发投资集团云南昆明650500 华中科技大学土木与水利工程学院湖北武汉430074

由于盾构在施工过程中受环境、设备和作业等不确定因素的影响,导致隧道开挖的安全性、效率和成本难以协调。针对这种情况,以武汉轨道交通某标段施工为依托,采用基于梯度增强(CatBoost)和非支配排序遗传算法(NSGA-Ⅲ)的混合算法,在全面... 详细信息

由于盾构在施工过程中受环境、设备和作业等不确定因素的影响,导致隧道开挖的安全性、效率和成本难以协调。针对这种情况,以武汉轨道交通某标段施工为依托,采用基于梯度增强(CatBoost)和非支配排序遗传算法(NSGA-Ⅲ)的混合算法,在全面考虑掘进效率、成本、安全风险等因素的基础上,选择以推进速度、掘进比能、刀具磨损量为目标,构建施工参数智能控制决策系统。首先,通过CatBoost回归模型预测盾构隧道推进速度、掘进比能和刀具磨损量,得到控制目标的适应度函数;然后,基于CatBoost预测模型构建的适应度函数,利用CatBoost-NSGA-Ⅲ进行施工参数的多目标优化;最后,通过模糊决策法从多个Pareto最优解集中选出最佳的施工参数组合,为隧道盾构掘进参数智能预测与优化提供参考。结果表明:1)Catboost可以进行模型精准预测,拟合优度R2大于0.9,均方根误差RMSE和平均绝对误差MAE较小;2)Catboost-NSGA-Ⅲ多目标优化,模糊决策法确定最优方案。经过优化,相较于实测数据的平均值,掘进比能和刀具磨损量分别降低5.3%和13.5%、掘进速度提升6.3%,为盾构隧道的智能化掘进控制和管理决策提供依据。

关键词：盾构施工推进速度掘进比能刀具磨损量施工参数多目标优化 CatBoost-NSGA-Ⅲ算法

Near infrared electrochromicvariable optical attenuator based on ruthenium complexand polycrystalline tungsten oxide

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Chinese Science Bulletin 2005年第23期50卷 2688-2690页

作者： ZHANG Jidong wu xianguo YU Hongan YAN Donghang WANG Zhiyuan Changchun Institute of Applied Chemistry Changchun 130022 China Department of Chemistry Carleton UniversityOttawa Canada K1S 5B6

A near infrared (NIR) electrochromic attenu-ator based on a dinuclear ruthenium complex and polycrys-talline tungsten oxide was fabricated and characterized. The results show that the use of the NIR-absorbing ruthenium complex as a counter electrode material can improve the device performance. By replacing the visible electrochromic ferrocene with the NIR-absorbing ruthenium complex, the optical attenuation at 1550 nm was enhanced from 19.1 to 30.0 dB and color efficiency also increased from 29.2 to 121.2 cm2/C.

关键词：近红外线镀铬衰减器双核钌化合物多晶氧化钨光学衰减器

基于BIM 5D的项目安全与质量协同管理研究

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土木建筑工程信息技术 2024年第1期16卷 116-121页

作者：曹源吴贤国冯宗宝李昕奕刘俊重庆水利电力职业技术学院重庆402160 华中科技大学武汉430070

为解决项目质量和安全管理无法直观表达、提前预防、及时整改等问题,本研究将BIM技术引入项目安全与质量管理工作中,验证了基于BIM 5D的工程安全与质量协同管理的可行性。通过研究得出:通过“事前预防”的BIM技术(建立Revit模型、深化... 详细信息

为解决项目质量和安全管理无法直观表达、提前预防、及时整改等问题,本研究将BIM技术引入项目安全与质量管理工作中,验证了基于BIM 5D的工程安全与质量协同管理的可行性。通过研究得出:通过“事前预防”的BIM技术(建立Revit模型、深化设计、施工模拟、可视化技术交底),将项目质量和安全问题提前暴露,减少返工造成的不必要麻烦,保证物资的有序进场和合理堆放,为安全文明施工提供基础;通过“事中控制”的BIM 5D+智慧工地决策系统,将质量、安全问题进行归集、分析,将分析结果以图表呈现,对关键问题进行预警,及时发现问题并整改。上述方法保证了项目安全,提升了工程质量,为施工企业应用BIM 5D提供了参考。

关键词：质量管理安全管理 BIM5D 协同管理智慧工地建筑信息模型(BIM)

Lead level in foremilk and neurobehavioral development of neonates

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Neural Regeneration Research 2007年第1期2卷 58-61页

作者： Shiguang Li Guoping Wang Shenghui Li xianguo wu Chunru Qi Matemal and Child Health Center Shanxi Children＇s Hospital Taiyuan 030013 Shanxi Province China

BACKGROUND： Recently, it has been reported that blood lead level lower than 24 μ mol/L can lead to learning and cognitive deficits. OBJECTIVE： To investigate the relationship of lead level in foremilk and early neurobehavioral development of neonates taking lead level in foremilk as lead exposure index. DESIGN： A controlled observation. SETTING： Maternal and Child Health Center, Shanxi Children＇s Hospital. PARTICIPANTS： Totally 128 neonates of full-term normal delivery, 76 male and 52 female, from Shanxi Provincial Maternal and Child Health Center and Jiexiu Maternal and Child Health Center were involved in this study. All the involved neonates had no peripartal ischemic/hypoxic history. The corresponding puerperants were aged （27 ±5 ）years. They had no various acute and chronic diseases during pregnancy, and family history of neurological disease as well as occupational lead exposure. Informed consents of detected items were obtained from the puerperants. METHODS： ①Determination of lead level in foremilk- Altogether 128 foremilk samples, 1 mL each, were collected between January and February 2005. The same amount of violet acid was added to each sample. After foremilk was fully dissolved, 0.2 mL solution was taken for determining lead level with atomic absorption spectrometer in graphite stove. The determined process strictly followed the internal quantity control of laboratory and was involved in the blind quality control of Institute of Environmental Health of Chinese Academy. ②Participants grouping： Totally 128 neonates were involved, and the normal reference value of lead level of foremilk was 0.06 - 0.48 μ mol/L. The involved neonates were assigned into high-level lead group （≥ 0.24 μ mol/L, n =60） and low-level lead group （〈 0.24 μ mol/L, n =68）. ③Assessment of neurobehavioral development of neonates： Neurobehavioral development level of neonates who was born 24 to 72 hours was assessed with 20-item neonatal neurobehavioral determination method, which involve

关键词： lead neonates neurobehavioral manifestations

大跨度钢桁梁桥智能建造技术应用的可行性研究

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土木建筑工程信息技术 2024年第2期16卷 12-17页

作者：吴贤国刘俊陈虹宇曹源覃亚伟徐文华中科技大学土木与水利工程学院武汉430074 南洋理工大学土木工程与环境学院新加坡639798 武汉华中科大检测科技有限公司武汉430074 不详

大跨度钢桁梁桥的构件制造及拼装复杂,采用场内预制组装仍需消耗大量的人力、财力及工期。因此,本文采用BIM桥梁建模、三维激光扫描和虚拟预拼装技术,进行了基于BIM技术的施工方案模拟的可行性研究和基于BIM技术与三维激光扫描方法结合... 详细信息

大跨度钢桁梁桥的构件制造及拼装复杂,采用场内预制组装仍需消耗大量的人力、财力及工期。因此,本文采用BIM桥梁建模、三维激光扫描和虚拟预拼装技术,进行了基于BIM技术的施工方案模拟的可行性研究和基于BIM技术与三维激光扫描方法结合的构件加工质量检测研究,并在此基础上进行了基于BIM技术与三维激光扫描方法结合的虚拟拼装技术研究,探索了大跨度钢桁梁桥智能建造技术应用于指导工程实施的可行性。

关键词： BIM技术三维激光扫描虚拟拼装钢桁梁桥

Correlation of blood lead level with iron, zinc and calcium as well as neonatal neurobehavioral development

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Neural Regeneration Research 2006年第5期1卷 475-477页

作者： Shiguang Li Guoping Wang Shenghui Li xianguo wu Chunru Qi Yingyi Liang Maternity and Child Care Hospital Shanxi Provincial Children Hospital Taiyuan 030013 Shanxi Province China

BACKGROUND ： Endothelial cell in brain of undeveloped fetus cannot inhibit entrance of lead so as to cause toxic effect. Over-accumulation of lead can cause toxic effect on children＇s growth and development, especially on development of nervous system. Lead in fetus body is mainly derived from its mother＇s; therefore, blood lead reflects the level of mother＇s lead. OBJECTIVE： To analyze the correlations among blood lead level, trace elements, mental development index （MDI） and psychomotor development index （PDI） of 3-month-old children. DESIGN ： Contrast observation.SETTING： Maternity and Child Care Hospital, Shanxi Provincial Children Hospita. PARTICIPANTS： A total of 128 neonates with spontaneous delivery were provided by Shanxi Maternity and Child Care Hospital and Jiexiu Municipal Maternity and Child Care Hospital from September 2004 to January 2005. There were 76 boys and 52 girls. All subjects did not have history of ischemia and hypoxia during perinatal period and umbilical blood was accepted to be used in experiments. METHODS ： ① Levels of iron, calcium and zinc in umbilical blood： 0.5 mL umbilical blood and 2 mL blood samples were selected from neonates to measure lead content with graphite-oven atom absorption spectrum and contents of iron, calcium and zinc in umbilical blood with atom absorption spectrum. ② Grouping： According to level of blood lead, neonates were divided into high-dosage lead group （blood lead ≥ 0.24 μmol/L） and low-dosage lead group （blood lead 〈 0.24 μmol/L）. ③ Evaluation of neurobehavioral development： Neurobehavioral development of 3-month-old neonates was evaluated with Bayley scale, which was consisted of intelligence scale, motor scale and behavioral scale. Intelligence scale, which was expressed as intelligence development index, contained 163 items, such as adaptability, behavior, language, pilot activities, etc. Motor scale, which was expressed as mental motor development index, contained 81 items, such as vulgar moto

关键词： umbilical blood correlation coefficient negative correlation absorption spectrum toxic effect growth and development correlation analysis standard deviation mental retardation blood coagulation nervous system side effects lead content used in

Influencing factors of colostrum exposure to low-level lead and their relationship with early neural development of infants

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Neural Regeneration Research 2007年第9期2卷 557-560页

作者： Shiguang Li Guoping Wang Kui Fu Chunru Qi xianguo wu Qinghao Kong Yingyi Liang Center for Maternal and Child Health Shanxi Provincial Children＇s Hospital Taiyuan 030013 Shanxi Province China

BACKGROUND： Exposure to low-level lead has a toxic effect on the development of neonates, which has attracted wide attention. Colostrum lead level can be used as the indication of lead exposure. OBJECTIVE： To observe the relationship of colostrum lead level and the neurobehavioral development of infants. DESIGN： A prospective control observation. SETTING： Center for Maternal and Child Health, Shanxi Provincial Children＇s Hospital. PARTICIPANTS： Totally 128 neonates of full-term normal delivery, 76 male and 52 female, from Shanxi Provincial Maternal and Child Health Center and Jiexiu Maternal and Child Health Center were involved in this study. All the involved neonates had no peripartal ischemic/hypoxic history or fetus intrauterine developmental lag. Pregnant women had no various acute and chronic diseases in pregnancy, family history of neurological disease or occupational lead exposure. 128 portions of colostrum sample of full-term normal delivery were collected. Informed consents of detected items were obtained from the puerperants and their relatives. METHODS： ① Experimental grouping： Lead level in the colostrum was determined by atomic absorption spectrometry. According to lead level in the colostrum, the neonates were classified into two exposure groups of greater than or equal to 0.24 μmol/L in a high-level lead group and less than 0.24 μ mol/L in a low-level lead group. ② Experimental evaluation： Mental developmental index （MDI） and psychological developmental index （PDI） of 3-month-old infants were evaluated with Bayley Scales of Infant Development （BSID）. The relationships of MDI, PDI and colostrum lead level were performed correlation regression analysis; The relationship of colostrum lead level and development was performed multi-factor analysis with family environment and health questionnaires. MAIN OUTCOME MEASURES： ① Evaluation results of MDI and PDI. ② Multi-factor analysis results. RESULTS： Totally 128 neonates were involved in the stud

关键词： lead colostrum neural development

Aspirin inhibits colon cancer cell migration through the transnuclear entry-regulated epithelial-mesenchymal transition

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Aspirin inhibits colon cancer cell migration through the tra...

支持NAT用户的IPv6隧道代理设计和实现

2018年浙江省检验医学学术年会

作者： Shenghang Jin xianguo wu The Second Affiliated Hospital Zhejiang University School of Medicine

The mechanism most likely responsible for the initiation of tumor metastasis,epithelial-mesenchymal transition(EMT),is not well *** EMT,epithelial cells lose polarity,adhesion to surrounding cells,and migration,becoming mesenchymal *** Wnt signaling is implicated in controlling gene transcription,and body pattern formation during development,but it also plays a role in carcinogenesis by regulating EMT.

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来源： cnki会议评论

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计算机工程 2006年第23期32卷 97-99页

作者：吴贤国刘敏中国科学院计算技术研究所

IPv6隧道代理面向分散用户,是IPv4/IPv6过渡技术的重要组成部分。但IPv6隧道代理不支持NAT用户,而在世界各地尤其是在中国,NAT用户广泛存在。该文针对NAT问题对隧道代理机制进行了修改,允许隧道主体上存在任何类型和任意数量的NAT。在Li... 详细信息

IPv6隧道代理面向分散用户,是IPv4/IPv6过渡技术的重要组成部分。但IPv6隧道代理不支持NAT用户,而在世界各地尤其是在中国,NAT用户广泛存在。该文针对NAT问题对隧道代理机制进行了修改,允许隧道主体上存在任何类型和任意数量的NAT。在Linux平台上实现了修改后的隧道代理系统,并对隧道服务器的性能进行了测试。

关键词：隧道代理 IPv6 过渡 NAT