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发展民间科技事业势在必行

科学对社会的影响 2006年第3期50卷 44-47页

作者：黄友直 <发明与创新>杂志

民间科学应该成为我国科技现代化不可或缺的力量。但是与发达国家相比,我国民科发展困难重重,整体水平有待进一步提高。《科学对社会的影响》十分关注民科发展,两年前曾组织过专栏讨论。近来中央提出了在15年内把我国建设成为科技创新... 详细信息

民间科学应该成为我国科技现代化不可或缺的力量。但是与发达国家相比,我国民科发展困难重重,整体水平有待进一步提高。《科学对社会的影响》十分关注民科发展,两年前曾组织过专栏讨论。近来中央提出了在15年内把我国建设成为科技创新型国家的宏伟目标,这就为来自各行各业有更多原始创新性的民科发展提供了一个良好的机遇。2005年首届全国民间科技研讨会在长沙的召开,2006年全国民间科技深圳论坛的召开,为今后我国民科的迅速发展,以及专业和民间两支科研力量优势的互补奠定了良好的基础。这一期的科学文化专栏,我们邀请对中国民科发展非常关注的一些专家学者一起探讨近年民科的现状、它今后的任务和发展途径。

关键词：科技事业民间 “十一五”规划社会力量科学技术发展研究与开发技术开发科学研究

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基于预训练语义编码的判断句答案推理

软件导刊 2024年第1期23卷 75-80页

作者：李飞王颜颜王超黄友志中国科学技术大学计算机科学与技术学院安徽合肥230026 科大国创云网科技有限公司安徽合肥230088

目前大规模文本问答依赖句子表征从候选文本中检索答案,但是忽略了有些答案需要进一步推理,无法直接从文中获取,比如判断句。为解决此类问题,一个面向大规模文本的判断句答案生成方法被提出。首先在语义编码器中通过对大规模文本进行预... 详细信息

目前大规模文本问答依赖句子表征从候选文本中检索答案,但是忽略了有些答案需要进一步推理,无法直接从文中获取,比如判断句。为解决此类问题,一个面向大规模文本的判断句答案生成方法被提出。首先在语义编码器中通过对大规模文本进行预训练获取语义编码器,对问题、依据进行语义编码;其次在答案生成器中基于对比学习构造正负样本进行数据增强;之后在答案依据获取器中通过使用Faiss实现问题和大规模文本的快速表征与匹配。在最终的判断句问答中,准确率高达96.58%,验证了该方法的有效性。

关键词：智能问答开放域问答问答分类器语义编码

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Transmission Dynamics of an Outbreak of the COVID-19 Delta Variant B.1.617.2——Guangdong Province,China,May-June 2021

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China CDC weekly 2021年第27期3卷 584-586页

作者： Meng Zhang Jianpeng Xiao Aiping Deng Yingtao Zhang Yali Zhuang Ting Hu Jiansen Li Hongwei Tu Bosheng Li Yan Zhou Jun Yuan Lei Luo Zimian Liang youzhi huang Guoqiang Ye Mingwei Cai Gongli Li Bo Yang Bin Xu Ximing huang Yazun Cui Dongsheng Ren Yanping Zhang Min Kang Yan Li Guangdong Provincial Center for Disease Control and Prevention GuangzhouGuangdongChina Guangdong Provincial Institute of Public Health GuangzhouGuangdongChina School of Public Health Southern Medical UniversityGuangzhouGuangdongChina Guangzhou Center for Disease Control and Prevention GuangzhouGuangdongChina Foshan Center for Disease Control and Prevention GuangzhouGuangdongChina Maoming Center for Disease Control and Prevention GuangzhouGuangdongChina Zhanjiang Center for Disease Control and Prevention GuangzhouGuangdongChina Guangzhou Liwan District Center for Disease Control and Prevention GuangzhouGuangdongChina Guangzhou Panyu District Center for Disease Control and Prevention GuangzhouGuangdongChina Guangzhou Haizhu District Center for Disease Control and Prevention GuangzhouGuangdongChina Guangzhou Yuexiu District Center for Disease Control and Prevention GuangzhouGuangdongChina Foshan Nanhai District Center for Disease Control and Prevention GuangzhouGuangdongChina Maoming Dianbai District Center for Disease Control and Prevention GuangzhouGuangdongChina National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Chinese Center for Disease Control and Prevention BeijingChina

On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,*** number of infection... 详细信息

关键词： Guangdong fir break

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介电组合测量法用于流程分析的研究

兵工学报 2000年第4期21卷 372-374页

作者：任芊柏祥基黄友之北京理工大学北京100081

本文讨论了在工业上利用物质的介电特性进行成分分析的可行性 ,并建立相应的测量系统。依据物质在微观结构上的差异及测量中介质损耗等因素的影响 ,确定以被测量体系的介电常数为主参数 ,电阻为辅助参数的组合测量方法并根据其原理进行... 详细信息

本文讨论了在工业上利用物质的介电特性进行成分分析的可行性 ,并建立相应的测量系统。依据物质在微观结构上的差异及测量中介质损耗等因素的影响 ,确定以被测量体系的介电常数为主参数 ,电阻为辅助参数的组合测量方法并根据其原理进行测试实验 ,建立了初步的数学模型。研究证明 ,测量系统是行之有效的。

关键词：介电测量流程分析数学建模

A thermodynamic perspective on electrode poisoning in solid oxide fuel cells

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1449-1455页

作者： Kevin huang Department of Mechanical Engineering University of South CarolinaColumbiaUSA

A critical challenge to the commercialization of clean and high-efficiency solid oxide fuel cell(SOFC)technology is the insuf-ficient stack lifespan caused by a variety of degradation mechanisms,which are associated with cell components and chemical *** components related degradation refers to thermal/chemical/electrochemical deterioration of cell materials under operating conditions,whereas the latter regards impurities in feedstocks of oxidant(air)and reductant(fuel).This article provides a thermodynamic perspective on the understanding of the impurities-induced degradation mechanisms in *** discussion focuses on using thermodynamic ana-lysis to elucidate poisoning mechanisms in cathodes by impurity species such as Cr,CO_(2),H_(2)O,and SO_(2) and in the anode by species such as S(or H_(2)S),SiO_(2),and P_(2)(or PH_(3)).The author hopes the presented fundamental insights can provide a theoretical foundation for search-ing for better technical solutions to address the critical degradation challenges.

关键词： impurities air fuel reaction activity

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带盖盘45°预旋系统流动特性的实验

航空动力学报 2017年第9期32卷 2125-2131页

作者：孙占东罗翔黄由之周志翔廖乃兵北京航空航天大学能源与动力工程学院北京100191 北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室北京100191 中国航空发动机集团有限公司湖南动力机械研究所湖南株洲412002

对带盖盘45°预旋系统的预旋腔和转静腔内流动特性进行了实验研究,得到了高转速下静盘表面的静压分布、中心面(z/S=0.326)总压分布、流阻系数以及预旋孔排气系数的变化规律。结果表明:流量分配对腔内压力分布影响较小;湍流参数是腔内流... 详细信息

对带盖盘45°预旋系统的预旋腔和转静腔内流动特性进行了实验研究,得到了高转速下静盘表面的静压分布、中心面(z/S=0.326)总压分布、流阻系数以及预旋孔排气系数的变化规律。结果表明:流量分配对腔内压力分布影响较小;湍流参数是腔内流动特性的主要影响参数之一;腔内流动结构主要分为转静腔的自由涡结构以及预旋腔的回流区和低压区;流阻系数随湍流参数变大而显著上升;预旋孔排气系数随着进、出口压比增加而增加。

关键词：盖盘预旋转静系预旋腔流动

Fast Blood Oxygenation through Hemocompatible Asymmetric Polymer of Intrinsic Microporosity Membranes

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Research 2024年第1期2023卷 261-270页

作者： Xinxi huang Junping huang Pengcheng Su Wanbin Li Guangdong Key Laboratory of Environmental Pollution and Health School of EnvironmentJinan UniversityGuangzhou 511443China

Membrane technology has attracted considerable attention for chemical and medical applications,among *** organs play important roles in medical science.A membrane oxygenator,also known as artificial lung,can replenish O_(2) and remove CO_(2) of blood to maintain the metabolism of patients with cardiopulmonary ***,the membrane,a key component,is subjected to inferior gas transport property,leakage propensity,and insufficient *** this study,we report efficient blood oxygenation by using an asymmetric nanoporous membrane that is fabricated using the classic nonsolvent-induced phase separation method for polymer of intrinsic *** intrinsic superhydrophobic nanopores and asymmetric configuration endow the membrane with water impermeability and gas ultrapermeability,up to 3,500 and 1,100 gas permeation units for CO_(2) and O_(2),***,the rational hydrophobic–hydrophilic nature,electronegativity,and smoothness of the surface enable the substantially restricted protein adsorption,platelet adhesion and activation,hemolysis,and thrombosis for the ***,during blood oxygenation,the asymmetric nanoporous membrane shows no thrombus formation and plasma leakage and exhibits fast O_(2) and CO_(2) transport processes with exchange rates of 20 to 60 and 100 to 350 ml m^(−2) min^(−1),respectively,which are 2 to 6 times higher than those of conventional *** concepts reported here offer an alternative route to fabricate high-performance membranes and expand the possibilities of nanoporous materials for membrane-based artificial organs.

关键词： porosity asymmetric Oxygen

Sintering of phosphor-glass composites goes ultrafast

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Science China Materials 2024年第8期67卷 2711-2712页

作者： Xiaoyong huang College of Electronic Information and Optical Engineering Taiyuan University of TechnologyTaiyuan 030024China

Nowadays,with the rapid technological progress of high-quality lightings and high-end displays,high-power white light-emitting diodes(WLEDs)and high-brightness white laser diodes(WLDs)featuring with high energy density excitation,high output power and high device stability have been extensively investigated and regarded as the new-generation solid-state light sources[1–6].

关键词： diodes WLED white

Quantifying the strength of magnetic fields using baryon electric charge correlation

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Nuclear Science and Techniques 2024年第8期35卷 5-8页

作者： Xu‑Guang huang Physics Department and Center for Particle Physics and Field Theory Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion‑beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics National Natural Science Foundation of China and Fudan UniversityShanghai 200438China

Although heavy-ion collisions generate strong magnetic fields,their direct measurement is a challenging task.A new observable,the baryon electric charge correlation,was recently found to be sensitive to the magnetic field strength and thus could be used as a magnetometer for heavy-ion ***,this observable may shed light on the equation of state and phase structure of quantum chromodynamics(QCD)under magnetic *** and understanding the phase structure of quantum chromodynamics(QCD)is important in contemporary physics[1].

关键词： charge observable magnetic