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基于近红外光谱的商品玉米品种快速鉴别方法

光谱学与光谱分析 2010年第5期30卷 1248-1251页

作者：邬文锦王红武陈绍江郭婷婷王守觉苏谦孙明安冬中国农业大学信息与电气工程学院北京100083 中国农业大学国家玉米改良中心北京100094 中国科学院半导体研究所北京100083

现有的玉米种子品种鉴别方法检测时间长,费用高,不易大批量快速鉴别。提出了一种基于近红外光谱数据快速鉴别商品玉米品种的新方法。先使用傅里叶变换近红外光谱仪获得从4000到12000cm-1波段范围的37个商品玉米品种籽粒的漫反射光谱数... 详细信息

现有的玉米种子品种鉴别方法检测时间长,费用高,不易大批量快速鉴别。提出了一种基于近红外光谱数据快速鉴别商品玉米品种的新方法。先使用傅里叶变换近红外光谱仪获得从4000到12000cm-1波段范围的37个商品玉米品种籽粒的漫反射光谱数据。对原始光谱进行矢量归一化预处理以消除噪声干扰,为了找到玉米品种籽粒的光谱特征波段,提出一种基于标准差的方法,进而对寻找到的玉米籽粒特征波段光谱做主成分分析(PCA),取能反映玉米品种99.98%光谱信息的前10个主成分。最后使用仿生模式识别(BPR)方法建立了37个玉米品种鉴别模型,对于每个品种的25个样本,随机挑选15个样本作为训练样本,其余10个样本作为第一测试集,其他品种共900个样本作为第二测试集。该鉴别模型对于37个玉米品种的平均正确识别率为94.3%。该方法的进一步研究有利于建立以近红外光谱为基础的物理指纹品种鉴别技术。

关键词：近红外光谱仿生模式识别玉米商品籽粒品种鉴别

Efficient and Stable Perovskite Solar Cells and Modules Enabled by Tailoring Additive Distribution According to the Film Growth Dynamics

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Nano-Micro Letters 2025年第2期17卷 387-400页

作者： Mengen Ma Cuiling Zhang Yujiao Ma Weile Li Yao wang Shaohang wu Chong Liu Yaohua Mai Institute of New Energy Technology College of Physics&Optoelectronic EngineeringJinan UniversityGuangzhou 510632People’s Republic of China Key Laboratory of New Semiconductors and Devices of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632People’s Republic of China Guangdong Mellow Energy Co. LimitedYuanming RoadZhuhai 519075GuangdongPeople’s Republic of China

Gas quenching and vacuum quenching process are widely applied to accelerate solvent volatilization to induce nucleation of perovskites in blade-coating *** this work,we found these two pre-crystallization processes lead to different order of crystallization dynamics within the perovskite thin film,resulting in the differences of additive *** then tailor-designed an additive molecule named 1,3-bis(4-methoxyphenyl)thiourea to obtain films with fewer defects and holes at the buried interface,and prepared perovskite solar cells with a certified efficiency of 23.75%.Furthermore,this work also demonstrates an efficiency of 20.18%for the large-area perovskite solar module(PSM)with an aperture area of 60.84 cm^(2).The PSM possesses remarkable continuous operation stability for maximum power point tracking of T_(90)>1000 h in ambient air.

关键词： Gas quenching Additive distribution Buried passivation Blade coating Crystallization dynamics

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目标定位最优布站的研究

数学的实践与认识 2005年第7期35卷 27-33页

作者：王郑耀汪宏武杨敏戴永红西安交通大学理学院西安710049 西安交通大学生命科学院西安710049 西安交通大学人机所西安710049

将目标检测问题转化为椭球体的截面对圆的覆盖问题,并给出了“逐层收缩”方案,给出了一个可计算的较优的结果;通过对逐层收缩方案的调整,获得了最优解:18个球(9个红球和9个蓝球).本文将目标定位问题转化为圆的三重覆盖问题,建立“球均... 详细信息

将目标检测问题转化为椭球体的截面对圆的覆盖问题,并给出了“逐层收缩”方案,给出了一个可计算的较优的结果;通过对逐层收缩方案的调整,获得了最优解:18个球(9个红球和9个蓝球).本文将目标定位问题转化为圆的三重覆盖问题,建立“球均定位能力”模型证明了一个红(蓝)球周围有4个蓝(红)球这种模式具有最大的球均定位能力,在此基础上给出红、蓝球的一个布局.36个球(18个红球和18个蓝球).

关键词：目标探测目标定位多基雷达布站最优布站椭球体 “逐层收缩” 数学建模

MoS2 synaptic transistor with one-step manufacture

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Science China(Information Sciences) 2025年第1期68卷 357-365页

作者： Yihao GUO Yang wang Wenjie DENG Yi wu Jingtao LI Kexin LI Yuehui ZHAO Songlin YU Xiaoting wang Yongzhe ZHANG Hui YAN Key Laboratory of Optoelectronics Technology of Education Ministry of China Faculty of Information TechnologyBeijing University of Technology Key Laboratory of Advanced Functional Materials Ministry of Education Faculty of Materials and ManufacturingBeijing University of Technology The 11th Research Institute of Electronics Technology Group Corporation

The synaptic transistor,which is a neuromorphic device with brain-like functions,has garnered significant attention due to characteristics such as low energy consumption,high integration,multiple functions,and high computational ***,the current synaptic transistor possesses a complicated structure and involves complex manufacturing steps,which is not conducive to low-cost,large-scale bionic ***,we introduce a simple MoS2synaptic transistor exhibiting robust synaptic *** transistor utilizes magnetron sputtering manufacture to combine the process of device metal electrode deposition and the introduction of defect states,which helps streamline the manufacturing process into a single *** long-term potentiation and long-term depression in photoelectric coordination are initially ***,biological functions,such as double pulse facilitation and the transformation behavior of short-term memory to long-term memory,are thoroughly evaluated,along with learning-forgetting-relearning ***,the device exhibits robust synaptic plasticity until incident light angles down to 30° to imitate the multi-to-one axon-cellular ***,a classical simulation of Pavlov's dog conditioned reflex is demonstrated along with the multiview extraction *** experimental results demonstrate a promising synaptic transistor with a simple structure,manufacturing technique,and excellent *** further indicates the potential for large-scale integration of bionic neuromorphic systems.

关键词： process optimization artificial synaptic device one-stepmanufacture synaptic plasticity bionic simulation

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基于动态网页技术的多媒体演示系统

计算机工程与应用 2000年第10期36卷 87-89,132页

作者：王宏吴胜杰清华大学计算机系智能技术与系统国家重点实验室北京100084

介绍一种网络多媒体演示系统,这种系统可以让用户轻松地设计自己的多媒体演示,而不再受演示技术或演示时间地点的限制.系统由三部分组成：用户接口－－－包括时间规格编辑器,空间规格编辑器,多媒体物件接口；演示接口；知识库.系统中还... 详细信息

介绍一种网络多媒体演示系统,这种系统可以让用户轻松地设计自己的多媒体演示,而不再受演示技术或演示时间地点的限制.系统由三部分组成：用户接口－－－包括时间规格编辑器,空间规格编辑器,多媒体物件接口；演示接口；知识库.系统中还包括一个动态网页生成器.文章给出了一个基于Allen定律的演示算法,用该算法实现了多媒体物件的同步显示.

关键词：多媒体演示动态网页 Internet

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深隧调蓄系统中入流竖井内部流场的数值模拟

中国给水排水 2019年第1期35卷 123-126,133页

作者：夏海王红武胡龙同济大学环境科学与工程学院上海200092 上海市城市建设设计研究总院<集团>有限公司上海200125

入流竖井是城市深隧调蓄系统与浅层排水系统衔接的关键部件,竖井内部流场直接影响竖井的消能、控声、排气功能,进而影响深隧系统的正常运转。为此,利用FLUENT软件中的RNG k-ε湍流模型,对跌落式入流竖井内部流场进行了数值模拟,计算了... 详细信息

入流竖井是城市深隧调蓄系统与浅层排水系统衔接的关键部件,竖井内部流场直接影响竖井的消能、控声、排气功能,进而影响深隧系统的正常运转。为此,利用FLUENT软件中的RNG k-ε湍流模型,对跌落式入流竖井内部流场进行了数值模拟,计算了不同竖井体型和不同入口流速工况下竖井内部压力场、速度场的变化规律以及竖井的消能率。结果表明,入口流速的变化对下方渐缩管和消能管下侧的压力影响较大,低流速工况对消能管的压力较大、高流速工况对渐缩管的压力较大,入口流速的增加会导致消能管消能效果的下降;另外,适当增加消能管长度可有效提高消能效果和出水稳定性。

关键词：深层隧道调蓄系统入流竖井入口流速消能率数值模拟

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基于分子印迹电聚合膜的褪黑素传感器的研究

分析化学 2012年第8期40卷 1219-1224页

作者：韦寿莲潘文捷汪洪武严子军肇庆学院化学化工学院

在弱酸条件下,以邻苯二胺为功能单体,褪黑素为模板,以电化学聚合物法在铂电极表面合成了性能稳定的褪黑素分子印迹聚合物膜。采用循环伏安法(CV)和差分脉冲法(DPV)对分子印迹传感器的识别性能进行了研究。结果表明:此传感器对褪黑素具... 详细信息

在弱酸条件下,以邻苯二胺为功能单体,褪黑素为模板,以电化学聚合物法在铂电极表面合成了性能稳定的褪黑素分子印迹聚合物膜。采用循环伏安法(CV)和差分脉冲法(DPV)对分子印迹传感器的识别性能进行了研究。结果表明:此传感器对褪黑素具有快的响应、良好的选择性和高的灵敏度。以K3Fe(CN)6为电子传递媒介,建立了一种差分脉冲伏安法(DPV)间接检测褪黑素的分析方法。在1×10-10～1×10-8moL/L范围内,褪黑素的浓度与K3Fe(CN)6的相对峰电流变化呈良好的线性关系;检出限为1×10-11mol/L(S/N=3)。将此传感器应用于复合褪黑素及尿样中褪黑素含量的测定,加标平均回收率大于94%。

关键词：分子印迹褪黑素电聚合电化学传感器

来源：博看期刊

Thickness and sp3 bond modulation of（Ti/tetrahedral amorphous carbon）_n multilayer coatings

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Tungsten 2025年第1期7卷 152-160页

作者： Zhi-Jun Xie Jia-Lin Li Ling Gong Xiang-Li Zhong hong-Jia Song Jin-Bin wang National-Provincial Laboratory of Special Function Thin Film Materials School of Materials Science and Engineering Xiangtan University

The durability of wear-resistant tetrahedral amorphous carbon（ta-C） coatings is intimately linked to their thickness and the concentration of *** enhance the lifespan of the coatings,we have prepared a multilayer coating consisting of alternating layers of Ti and ta-C,denoted as（Ti/ta-C）_n,using arc ion plating.A multi-layer structure in conjunction with stage cooling is employed to enhance the thickness and promote *** results indicate that the ID/IGvalue,representing the ratio of the intensity of the D peak to that of the G peak in Raman spectroscopy,decreases from 0.85 when no stage cooling is applied to 0.35 when stage cooling is employed,suggesting an enhancement in the fraction of sp3bonds within the *** obtained（Ti/ta-C）_n multilayer coating without peeling off has a maximum thickness of 1.14 μm,which is almost double that of the ta-C coating single layer *** the same time,the coating has a low coefficient of friction,down to 0.069,and maintains excellent friction properties with a wear rate of 3.4×10-6mm3·N-1·*** results conclusively show that the preparation technology can enhance both thickness and sp3bonding in ta-C coatings,significantly expanding their utility across tools,molds,and precision engineering components.

关键词： Arc ion plating Multilayer structure sp3 bond Ta-C coating Wear resistance

Characterization of ultraviolet communication in a mixed aerosol environment

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Optoelectronics Letters 2025年第2期21卷 77-84页

作者： ZHAO Taifei SUN Yuxin wang wuxin ZHANG Haijun PAN Feixiang wu Hao Artificial Intelligence Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Faculty of Automation and Information Engineering Xi'an University of Technology

Wireless ultraviolet (UV) has strong scattering characteristics and can communicate through non-direct *** UV signals are transmitted in the atmosphere,they are affected by the absorption and scattering effects of atmospheric particles and atmospheric turbulence,resulting in attenuation of UV signal energy and reduced reliability of the communication *** paper focuses on the channel model of UV non-direct-view single scattering communication,and simulates and analyzes the communication characteristics of UV light in atmospheric turbulence and mixed aerosol environment under horizontal,vertical and oblique range communication *** results show that at equal relative humidity,the wireless UV non-directive scattering communication performance for vertical communication scenarios is more affected by the mixed aerosol environment and the communication performance is worse.

关键词： Atmospheric turbulence