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Building Simulation 2024年第2期17卷 207-221页

作者： Xing Hu huibo zhang Hui Yu School of Design Shanghai Jiao Tong UniversityShanghai200240China

Wind-driven rain(WDR)has a significant influence on the hygrothermal performance,durability,and energy consumption of building *** calculation of WDR loads using semi-empirical models has been incorporated into the boundary conditions of coupled heat and moisture transfer ***,prior research often relied on fixed WDR absorption ratio,which fail to accurately capture the water absorption characteristics of porous building materials under rainfall ***,this study aims to investigate the coupled heat and moisture transfer of exterior walls under dynamic WDR boundary conditions,utilizing an empirically obtained WDR absorption ratio model based on field *** developed coupled heat and moisture transfer model is validated against the HAMSTAD *** findings reveal that the total WDR flux calculated with the dynamic WDR boundary is lower than that obtained with the fixed WDR boundary,with greater disparities observed in orientations experiencing higher WDR *** variations in moisture flow significantly impact the surface temperature and relative humidity of the walls,influencing the calculation of cooling and heating loads by different *** to the transient heat transfer model,the coupled heat and moisture transfer model incorporating dynamic WDR boundary exhibits maximum increases of 17.6%and 16.2%in cooling and heating loads,*** dynamic WDR boundary conditions provide more precise numerical values for surface moisture flux,offering valuable insights for the thermal design of building enclosures and load calculations for HVAC systems.

关键词： wind-driven rain building component hygrothermal model transient simulation cooling and heating loads

Coupled heat and moisture transfer in walls featuring moisture-buffering materials and ventilating layers:An Experimental study

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Energy and Built Environment 2024年第1期5卷 97-109页

作者： Xueqiong He Chi Feng huibo zhang School of Design Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Research Institute of Building Sciences Group Co. LtdShanghai 200032China School of Architecture and Urban Planning Chongqing UniversityChongqing 400045China

The moisture performance of building envelopes largely depends on the building materials,construction tech-niques,and exposure loads from the indoor and outdoor regions.A ventilated air interlayer placed in a wall can help dehumidify the wall and indoor *** paper presents an experimental study of the heat,air,and moisture variations within the envelope wall of a chamber featuring different air interlayer settings under real outdoor air conditions during the summer of 2020 in Shanghai,***-developed humidity-controlling building mate-rials were applied to the inner building ***,humidity,wind velocity,and heat-flow sensors were placed at different positions in the middle of the *** parameters were measured and recorded in real-time under three working conditions:humidification,dehumidification,and *** experimental results show that under the ventilation working conditions,moisture content of 0.52 kg can be removed after a 2-h air layer ventilation,which can benefit the design strategy for the humidification and ventilation of dehu-midification walls.

关键词： Ventilated wall Heat and humidity coupling transfer Moisture-buffering materials Experimental research

Thermal Contact Resistance between Aero Engine Compressor Blade and Flexible Fixture

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Journal of Thermal Science 2021年第2期30卷 530-539页

作者： DAI Shijie WANG Dong zhang huibo LI Shibo WANG Zhiping State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of TechnologyTianjin 300130China School of Mechanical Engineering Hebei University of TechnologyTianjin 300130China Tianjin City Civil Aircraft Airworthiness and Repair Key Laboratory Civil Aviation University of ChinaTianjin 300300China

In the process of two-pass micro plasma arc welding of titanium alloy sheet,based on the thermal contact resistance theory,a three-dimensional transient heat transfer finite element model of contact heat transfer between titanium alloy sheet and flexible fixture was *** effects of contact upper surface temperature,micro-contact thermal resistance,micro-gap thermal resistance,DC and pulse welding on thermal contact resistance were investigated,and the simulation and experimental results were *** results show that the thermal contact resistance increases as the temperature increases when the temperature of the contact upper surface (titanium alloy sheet) is in the range of 290-350 *** effect of micro-contact thermal resistance on the thermal contact resistance is 26.1%-46.3% larger than the micro-gap thermal *** thermal contact resistance of pulse welding is 3.1%-3.5% larger than DC *** error of simulation and experimental results of weld pool depth is 8.6%,which verifies the reliability of the model.

关键词： titanium alloy micro plasma arc welding thermal contact resistance micro-contact thermal resistance micro-gap thermal resistance finite element model

Modeling of wind-driven rain absorption ratio of building exterior finishing materials based on field measurements

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Frontiers of Architectural Research 2024年第5期13卷 1145-1157页

作者： Xing Hu huibo zhang Tianda Qian Chi Feng School of Design Shanghai Jiao Tong UniversityShanghai 200240China China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 200240China School of Architecture and Urban Planning Chongqing UniversityChongqing 400044China

Wind-driven rain(WDR)constitutes a significant source of moisture for building facades,which poses considerable challenges to both the thermal insulation performance and long-term durability of *** studies have contributed significantly to the understanding of fluid behavior and moisture response of WDR upon impacting ***,the quantification of absorbed rainwater by the wall remains *** address this gap,this study focuses on comprehending the dynamic WDR absorption behavior of various exterior finishing ***,nine types of finishing materials were selected as research objects and conducted field *** findings reveal that WDR absorption ratio is influenced by physical parameters of materials,surface waterproofing and the cumulative *** multiple regression fittings,we established an empirical WDR absorption ratio calculation *** model serves as a valuable reference for determining building simulation parameters regarding dynamic moisture boundary conditions on the exterior surfaces of *** providing empirical insights into WDR absorption,our research contributes to a more comprehensive understanding of moisture behavior in building envelopes,thereby aiding in the development of effective strategies for enhancing building performance and durability.

关键词： Wind-driven rain Exterior finishing materials Porosity Capillary absorption coefficient Moisture boundary

A nomogramfor predicting overall survival in patients with low-grade endometrial stromal sarcoma: A population-based analysis

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Cancer Communications 2020年第7期40卷 301-312页

作者： Jie Wu huibo zhang Lan Li Mengxue Hu Liang Chen Bin Xu Qibin Song Cancer Center Renmin Hospital of Wuhan UniversityWuhanHubei 430060P.R.China

Background:Low-grade endometrial stromal sarcoma(LG-ESS)is a rare tumor that lacks a prognostic prediction *** study aimed to develop a nomogram to predict overall survival of LG-ESS ***:A total of 1172 patients confirmed to have LG-ESS between 1988 and 2015 were selected from the Surveillance,Epidemiology and End Results(SEER)*** were further divided into a training cohort and a validation *** Akaike information criterion was used to select variables for the *** discrimination and calibration of the nomogram were evaluated using concordance index(C-index),area under time-dependent receiver operating characteristic curve(time-dependent AUC),and calibration *** net benefits of the nomogram at different threshold probabilities were quantified and compared with those of the International Federation of Gynecology and Obstetrics(FIGO)criteria-based tumor staging using decision curve analysis(DCA).Net reclassification index(NRI)and integrated discrimination improvement(IDI)were also used to compare the nomogram’s clinical utilitywith that of the FIGO criteria-based tumor *** risk stratifications of the nomogram and the FIGO criteria-based tumor staging were ***:Seven variables were selected to establish the nomogram for *** C-index(0.814 for the training cohort and 0.837 for the validation cohort)and the time-dependent AUC(>0.7)indicated satisfactory discriminative ability of the *** calibration plots showed favorable consistency between the prediction of the nomogram and actual observations in both the training and validation *** NRI values(training cohort:0.271 for 5-year and 0.433 for 10-year OS prediction;validation cohort:0.310 for 5-year and 0.383 for 10-year OS prediction)and IDI(training cohort:0.146 for 5-year and 0.185 for 10-year OS prediction;validation cohort:0.177 for 5-year and 0.191 for 10-year OS prediction)indicated that the established nomogram performed sign

关键词： FIGO criteria-based tumor staging Low-grade endometrial stromal sarcoma(LG-ESS) nomogram overall survival prognostic model risk stratification

同轴腔高阶模式回旋管振荡器中多模起振过程的非线性模拟

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强激光与粒子束 2013年第11期25卷 2939-2942页

作者：张辉波西南交通大学信息科学与技术学院成都610031

给出了工作在高阶模式下的同轴腔回旋管振荡器,在考虑竞争模式情况下的多模起振过程的数理模型和具体的数值计算方法。以此为基础编制的程序对一只工作于高阶模式TE42,22,频率为0.22THz的同轴腔回旋管振荡器进行了多模非线性模拟研究。... 详细信息

给出了工作在高阶模式下的同轴腔回旋管振荡器,在考虑竞争模式情况下的多模起振过程的数理模型和具体的数值计算方法。以此为基础编制的程序对一只工作于高阶模式TE42,22,频率为0.22THz的同轴腔回旋管振荡器进行了多模非线性模拟研究。结果表明:在合适的腔体结构参数并考虑腔壁上的欧姆损耗情况下,竞争模式得到有效抑制,可以稳定地工作在单一模式,输出功率达0.87MW,效率为22.8%,腔壁上的欧姆损耗低于其所能承受的最大值。

关键词：太赫兹同轴腔回旋管高阶模式模式竞争起振

Development and characterization of urethral stricture model in rabbits

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Journal of Medical Colleges of PLA(China) 2010年第6期25卷 351-358页

作者： Fu Delai Wang Ziming Chong Tie Li Hecheng zhang huibo zhang Peng Gan Weimin Department of Urology Second Affiliated Hospital School of Medicine Xi 'an Jiaotong University Xi 'an 710004 China Department of Urology Affiliated Hospital of Shaanxi Traditional Chinese Medical College Xianyang 712000 China

Objective： To establish an experimental model of urethral stricture in rabbits. Methods： A total of 21 adult male New Zealand rabbits were included into group. After intravenous anesthesia, urethroscopy was performed with a pediatric resectoscope （F13）. Fifteen animals were randomly selected as the study group. A lcm-long circumferential electrocoagulation of the bulbar urethra was performed to these animals until ulceration of the mucosa. The remaining 6 animals underwent video urethroscopy without electrocoagulation, serving as controls. On the 30th day, retrograde urethrogram and urethroscopy were performed to evaluate urethral stricture formation, histological examinations （HE and Sirius Red staining） were done to assess urethral pathological change. Results： Two rabbits in study group died and no death occurred in controls. Based on urethrogram and urethroscopy, no rabbits in control group developed urethral stricture, while significant stricture formation was observed in every case of the study group. Histological examination showed a normal urethra in control cases, while at stricture site of the study group extensive fibrosis of muscle and submucous tis High collagen expression in fibrosis tissue was assayed sue by was observed with a large number of fibroblasts infiltration Sirius Red staining. Conclusion： A lcm-long endoscopic electrocoagulation can successfully induce urethral stricture formation in rabbit models. This method offers an ideal animal model for the fundamental and clinical study of urethral stricture

关键词： Urethral stricture Animal model Rabbits

各向异性扩散滤波的三维散乱点云平滑去噪算法

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计算机辅助设计与图形学学报 2018年第10期30卷 1843-1849页

作者：戴士杰任永潮张慧博河北工业大学河北省机器人感知与人机融合重点实验室天津300130

针对传统点云去噪算法在去除噪声时易造成模型特征失真的问题,提出一种各向异性扩散滤波的三维散乱点云平滑去噪算法.首先采用张量投票算法计算采样点的张量矩阵,并求解其特征值和特征向量;然后根据采样点的几何特征设计扩散张量的特征... 详细信息

针对传统点云去噪算法在去除噪声时易造成模型特征失真的问题,提出一种各向异性扩散滤波的三维散乱点云平滑去噪算法.首先采用张量投票算法计算采样点的张量矩阵,并求解其特征值和特征向量;然后根据采样点的几何特征设计扩散张量的特征值,保证在不同特征方向的扩散速率能自适应调整;最后将重构的扩散张量与三维各向异性扩散滤波方程相结合,构造了点云滤波模型用于点云去噪.对不同含噪点云模型进行去噪的实验结果表明,该算法在点云去除噪声的同时,可以有效地保持原始模型的特征信息,避免了模型的过光顺.

关键词：点云去噪各向异性扩散方程张量投票算法扩散张量

“一带一路”倡议下职业教育国际合作平台的实践类型与发展路径

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中国职业技术教育 2024年第10期 19-26页

作者：张慧波宁波职业技术学院党委

打造职业教育国际合作平台是扩大职业教育高水平对外开放、服务“一带一路”倡议的重要举措。自2013年以来,我国职业教育国际合作平台建设历经初步探索阶段、多元拓展阶段和高质量发展阶段,形成了助力国际人力资源开发的技术技能人才培... 详细信息

打造职业教育国际合作平台是扩大职业教育高水平对外开放、服务“一带一路”倡议的重要举措。自2013年以来,我国职业教育国际合作平台建设历经初步探索阶段、多元拓展阶段和高质量发展阶段,形成了助力国际人力资源开发的技术技能人才培养国际合作平台、服务企业“走出去”的应用科研与技术服务国际合作平台、促进民心相通的跨文化交流互鉴国际合作平台。步入新的发展阶段,高质量打造职业教育国际合作平台需要以专业群为基础,整合升级国际化技术技能人才培养合作平台;对接“走出去”企业技术创新需求,提升应用科研与技术服务平台效能;回应国际文化交流和“民心相通”需求,全面优化跨文化交流互鉴国际合作平台功能。

关键词： “一带一路” 职业教育国际合作平台人才培养应用科研与技术服务跨文化交流互鉴

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基于延迟击穿特性的PIN二极管集约模型

强激光与粒子束 2024年第11期36卷 151-158页

作者：张帅涛张慧博张自成国防科技大学前沿交叉学科学院长沙410073 脉冲功率激光技术国家重点实验室长沙410073

延迟击穿特性在实现PIN二极管开关快速导通方面起着至关重要的作用。面对延迟击穿导通时间短导致物理过程分析困难的挑战,设计并验证了一种基于PIN结构的二极管集约模型。首先设计了一个基于PIN结构的二极管仿真模型,通过TCAD软件对该... 详细信息

延迟击穿特性在实现PIN二极管开关快速导通方面起着至关重要的作用。面对延迟击穿导通时间短导致物理过程分析困难的挑战,设计并验证了一种基于PIN结构的二极管集约模型。首先设计了一个基于PIN结构的二极管仿真模型,通过TCAD软件对该模型进行求解,结果显示在上升沿为520 V/ns、幅值为1000 V的快速高压触发脉冲作用下,二极管的击穿电压可达到其静态反向击穿电压的1.76倍,之后结合导通过程中的载流子浓度变化和电场变化情况对所建立模型的准确性作了进一步验证。其次,基于双极载流子扩散理论并结合TCAD仿真得到的参数,采用拉普拉斯变换和Pade逼近方法,对二极管的基区参数进行了等效电路处理。在此基础上利用基区的等效电路参数以及电导调制效应,建立了基于延迟击穿特性的PIN二极管集约模型。在PSpice软件中对该模型进行了仿真验证,结果显示在相同的触发脉冲作用下,二极管器件导通过程与TCAD仿真结果基本一致。本研究为探索快速导通二极管的反向延迟击穿特性提供了一种简单可行的电路分析方法。

关键词：延迟击穿二极管模型 TCAD 双极载流子扩散 PSpice