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Broadband and perfect terahertz absorber based on multilayer metamaterial with cross-ring patterned structures

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Optoelectronics Letters 2025年第1期21卷 1-6页

作者： WEN Jin liU Zhanzhi WU Zhengwei PAN Yu zhang ying School of Science Xi'an Shiyou University Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells

Broadband and perfect terahertz absorber based on multilayer metamaterial using cross-ring patterned structures is proposed and investigated. The structure of the absorber is double absorption layers consisting of a chromium cross ring and eight isosceles right triangles. The unique structure of the double absorbing layers excites the electric dipole multimode resonance, giving rise to high absorption performance. Meanwhile, the influence of construal parameters on absorber behavior is also discussed. The numerical results show that the absorption achieves over 90% ranging from 2.45 THz to 6.25 THz and 99% absorption in the range of 3.7—5.3 THz. The realization of broadband and perfect absorber is described using the impedance matching principle. It is obviously found that the absorber is insensitive to the high angle of incidence for both transverse electric(TE) and transverse magnetic(TM) polarizations. Compared with the former reports, this absorber has remarkable improved absorption efficiency and smaller period. The terahertz absorber may be found applications in the fields of energy capture and thermal detection.

关键词： Metamaterials

中西学者英语学术论文现在完成体与动词构式搭配对比研究

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解放军外国语学院学报 2022年第4期45卷 52-60页

作者：张立英浙江理工大学外国语学院浙江杭州310018

本研究基于中西学者国际期刊论文语料库,采用构式搭配分析法考察中西学者使用英语现在完成体时的动词异同。研究发现,中西学者现在完成体的使用频次存在显著差异,西方学者比中国学者更多地使用现在完成体。显著搭配强度的动词词表对比表... 详细信息

本研究基于中西学者国际期刊论文语料库,采用构式搭配分析法考察中西学者使用英语现在完成体时的动词异同。研究发现,中西学者现在完成体的使用频次存在显著差异,西方学者比中国学者更多地使用现在完成体。显著搭配强度的动词词表对比表明,西方学者在完成体中更多地使用表达认知、逻辑关系的动词、助动词be+形容词。对相关动词的语义特征分析可揭示完成体使用差异的语言内因素。本研究所发现的中西学者完成体动词使用差异可为学术英语教学提供实证参考。

关键词：现在完成体动词语义构式搭配学术英语英语学术论文语料库

Influence of degenerative changes of intervertebral disc on its material properties and pathology

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Chinese Journal of Traumatology 2012年第2期15卷 67-76页

作者： WANG Yi CHEN Hai-bin zhang ling zhang li-ying liU Jing-cheng WANG Zheng-guo State Key Laboratory of Trauma Burnsand Combined InjuryInstitute of Surgery ResearchDaping HospitalThird Military Medical UniversityChongqing 400042China College of Optoelectronic Engineering Chongqing UniversityChongqing 400044China

Objective： To investigate the material properties of normal and degenerated intervertebral discs （IVDs） and examine the effect of degenerative changes on IVD pathology. Methods： A computer-based online search was undertaken to identify English articles about material properties of IVDs published from January 1950 to 2011 in PubMed database. The retrieved keywords included material properties, intervertebral disc and degeneration. Based on the principles of reliability, advancement and efficiency, the obtained data were primarily examined, and the original source was retrieved to read the full-text. Repetitive articles were excluded. The data of material properties of normal and degenerated IVDs were summarized and analyzed by meta-analysis. Results： The data of Young＇s modulus, Poisson＇s ratio, shear modulus, hydraulic permeability and intradiscal pres- sure of normal and degenerated 1VDs were obtained. Com- pared with normal IVDs, the Young＇s modulus and shear modulus of annulus fibrosus and nucleus pulposus werehigher in degenerated IVDs, the Poisson＇s ratio was lower while the hydraulic permeability and intradiscal pressure were higher. Besides, the degeneration-related alterations in IVDs had an influence both on itself and other spinal structures, leading to diseases such as bulging disc, discogenic pain and spinal stenosis. Meanwhile, the heavy mechanical loading and injury indicated important pathways to IVD degeneration. Conclusions： To a certain extent, the degenerative changes of IVD influence its material properties. And the degeneration-related alterations of composition can cause structural failure oflVDs, leading to injuries and diseases.

关键词： Intervertebral disc Mechanicalphenomena Degeneration Elastic modulus Permeability Pathology

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我国药企纠正和预防措施管理研究分析

中国新药杂志 2015年第17期24卷 1968-1974页

作者：张利英郑强浙江医药新昌制药厂绍兴312500 北京大学药物信息与工程研究中心北京100871 北京大学工学院工业工程与管理系北京100871

目的:针对我国药企在纠正和预防措施(corrective action&preventive action,CAPA)管理中存在的不足,探索改进方法,帮助企业更好地运用CAPA这一管理工具,促进质量管理水平的提高。方法:结合相关法规及指南对于制药行业CAPA的要求,用问卷... 详细信息

目的:针对我国药企在纠正和预防措施(corrective action&preventive action,CAPA)管理中存在的不足,探索改进方法,帮助企业更好地运用CAPA这一管理工具,促进质量管理水平的提高。方法:结合相关法规及指南对于制药行业CAPA的要求,用问卷调查了解国内制药企业CAPA管理的一般现状,实地调研作者所在制药公司CAPA管理中出现的具体问题,并提出分析和解决思路。结果与结论:我国制药企业未能有效利用CAPA管理工具。企业应正视由此显示的质量管理体系缺陷,考虑本文建议的分析和改进措施,提高质量管理能力。

关键词：纠正和预防措施(CAPA) 持续改进质量管理体系

Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao li Zhao Yajun zhang Zhe Yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

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稳健的基于等照度线的图像修复算法

吉林大学学报（工学版） 2016年第3期46卷 929-933页

作者：何凯张丽莹高俊俏天津大学电子信息工程学院天津300072

首先利用Guided滤波器去除纹理和噪声干扰,获得图像的整体结构信息。然后,利用各向异性扩散算法中的边缘停止函数对传统的等照度线检测方法进行改进,并将其与传统图像修复优先权函数相结合。通过利用等照度线函数对纹理合成过程进行引导... 详细信息

首先利用Guided滤波器去除纹理和噪声干扰,获得图像的整体结构信息。然后,利用各向异性扩散算法中的边缘停止函数对传统的等照度线检测方法进行改进,并将其与传统图像修复优先权函数相结合。通过利用等照度线函数对纹理合成过程进行引导,来获得稳健的图像修复效果。仿真实验结果表明:本文算法在有效保持修复图像结构信息的同时,对具有光照变化的纹理也获得了比较理想的修复效果。

关键词：信息处理技术图像修复等照度线检测 Guided滤波修复优先权边缘停止函数

DDoS Attack Autonomous Detection Model Based on Multi-Strategy Integrate Zebra Optimization Algorithm

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Computers, Materials & Continua 2025年第1期82卷 645-674页

作者： Chunhui li Xiaoying Wang Qingjie zhang Jiaye liang Aijing zhang School of Information Engineering Institute of Disaster PreventionLangfang065201China Langfang Key Laboratory of Network Emergency Protection and Network Security Langfang065201China

Previous studies have shown that deep learning is very effective in detecting known ***,when facing unknown attacks,models such as Deep Neural Networks(DNN)combined with Long Short-Term Memory(LSTM),Convolutional Neural Networks(CNN)combined with LSTM,and so on are built by simple stacking,which has the problems of feature loss,low efficiency,and low ***,this paper proposes an autonomous detectionmodel for Distributed Denial of Service attacks,Multi-Scale Convolutional Neural Network-Bidirectional Gated Recurrent Units-Single Headed Attention(MSCNN-BiGRU-SHA),which is based on a Multistrategy Integrated Zebra Optimization Algorithm(MI-ZOA).The model undergoes training and testing with the CICDDoS2019 dataset,and its performance is evaluated on a new GINKS2023 *** hyperparameters for Conv_filter and GRU_unit are optimized using the Multi-strategy Integrated Zebra Optimization Algorithm(MIZOA).The experimental results show that the test accuracy of the MSCNN-BiGRU-SHA model based on the MIZOA proposed in this paper is as high as 0.9971 in the CICDDoS 2019 *** evaluation accuracy of the new dataset GINKS2023 created in this paper is *** to the MSCNN-BiGRU-SHA model based on the Zebra Optimization Algorithm(ZOA),the detection accuracy on the GINKS2023 dataset has improved by 5.81%,precisionhas increasedby 1.35%,the recallhas improvedby 9%,and theF1scorehas increasedby 5.55%.Compared to the MSCNN-BiGRU-SHA models developed using Grid Search,Random Search,and Bayesian Optimization,the MSCNN-BiGRU-SHA model optimized with the MI-ZOA exhibits better performance in terms of accuracy,precision,recall,and F1 score.

关键词： Distributed denial of service attack intrusion detection deep learning zebra optimization algorithm multi-strategy integrated zebra optimization algorithm

考古地层的三维建模方法在秦始皇帝陵考古勘探中应用尝试

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文物保护与考古科学 2017年第2期29卷 63-66页

作者：张立莹秦始皇帝陵博物院陕西西安710600

为了更清楚地展示秦始皇帝陵地区考古地层的三维空间关系,并为后期考古工作中空间数据挖掘做准备,借鉴三维地质建模技术,提出了考古地层三维建模方法。基于探孔数据构建了考古地层三维模型。该模型清楚地展示了秦始皇帝陵地区考古地层... 详细信息

为了更清楚地展示秦始皇帝陵地区考古地层的三维空间关系,并为后期考古工作中空间数据挖掘做准备,借鉴三维地质建模技术,提出了考古地层三维建模方法。基于探孔数据构建了考古地层三维模型。该模型清楚地展示了秦始皇帝陵地区考古地层的三维空间关系,为田野考古数字化工作提供一种新思路、新方法。

关键词：地层三维建模空间数据体模型

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改进企业行为文化对员工激励功能的若干思考

特区经济 2005年第1期 234-236页

作者：张丽英广东省韶关学院经济管理系 512005

随着我国改革开放的深入发展,一些企业领导者对企业文化重要性的认识不断提高,企业文化建设已取得了明显的进步,但仍有大部分企业在企业文化激励的运用中存在着问题.主要表现在:相对注重物质文化激励与精神文化激励,制度文化激励的形式... 详细信息

随着我国改革开放的深入发展,一些企业领导者对企业文化重要性的认识不断提高,企业文化建设已取得了明显的进步,但仍有大部分企业在企业文化激励的运用中存在着问题.主要表现在:相对注重物质文化激励与精神文化激励,制度文化激励的形式也比较容易确定,而对行为文化激励普遍重视不够,产生上述问题的主要原因是,行为文化的建设涉及面广,且具有长期性,企业领导者普遍不愿在这方面花费时间和精力,使得行为文化激励与上述3个层次的文化激励相脱离,没有能够将精神文化的灵魂、制度文化的规范和物质文化的表现严格贯彻于员工日常生产经营行为中.

关键词：企业文化建设企业领导者员工激励企业行为行为文化问题改革开放精神文化物质文化制度文化