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Controlling Single-Photon Transport along an Optical Waveguide by using a Three-Level Atom

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Chinese Physics Letters 2012年第3期29卷 13-16页

作者： TIAN wei CHEN Bin xu wei-dong Business School University of Shanghai for Science and TechnologyShanghai 200093 Tin Ka-Ping College of Science University of Shanghai for Science and TechnologyShanghai 200093 School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093

We theoretically investigate the single-photon transport properties in an optical waveguide embedded with a V-type three-level atom(VTLA)based on symmetric and asymmetric couplings between the photon and the *** numerical results show that the transmission spectrum of the incident photon can be well controlled by virtue of both symmetric and asymmetric coupling interactions.A multifrequency photon attenuator is realized by controlling the asymmetric coupling ***,the influences of dissipation of the VTLA for the realistic physical system on single-photon transport properties are also analyzed.

关键词： multifrequency waveguide Waveguide

MF-CFI:A fused evaluation index for camouflage patterns based on human visual perception

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维普期刊数据库

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Defence Technology（防务技术） 2021年第5期17卷 1602-1608页

作者： Xin Yang wei-dong xu Qi Jia Jun Liu National Key Laboratory of Lightning Protection and Electromagnetic Camouflage Army Engineering UniversityNanjingJiangsu210007China

The evaluation index of camouflage patterns is important in the field of military *** is the goal that researchers have always pursued to make the computable evaluation indicators more in line with the human visual *** order to make the evaluation method more computationally intelligent,a Multi-Feature Camouflage Fused Index(MF-CFI)is proposed based on the comparison of grayscale,color and texture features between the target and the *** order to verify the effectiveness of the proposed index,eye movement experiments are conducted to compare the proposed index with existing indexes including Universal Image Quality Index(UIQI),Camouflage Similarity Index(CSI)and Structural Similarity(SSIM).Twenty-four different simulated targets are designed in a grassland background,28 observers participate in the experiment and record the eye movement data during the observation *** results show that the highest Pearson correlation coefficient is observed between MF-CFI and the eye movement data,both in the designed digital camouflage patterns and largespot camouflage *** MF-CFI is more in line with the detection law of camouflage targets in human visual perception,the proposed index can be used for the comparison and parameter optimization of camouflage design algorithms.

关键词： Camouflage evaluation Visual perception Effect assessment Fused index Eye movement analysis

The Addition Reaction of p-Chlorobenzaldoxime Dehydrodimer with 1,3-Dienes

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Chemical Research in Chinese Universities 1998年第3期14卷 51-54页

作者： ZHANG xu wei xu-dong HU Yue-fei HU Hong-wen Department of Chemistry Nanjing UniversityNanjing210093

The addition reaction of p chlorobenzaldoxime dehydrodimer and 1,3 dienes in refluxing chloroform gives linear 1,4 addition products. The reaction is probably a free radical process.

关键词： Addition reaction Iminoxy radical 1 3 Diene

Research on extraction and reproduction of deformation camouflage spot based on generative adversarial network model

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Defence Technology（防务技术） 2020年第3期16卷 555-563页

作者： Xin Yang wei-dong xu Qi Jia Ling Li Wan-nian Zhu Ji-yao Tian Hao xu National Key Laboratory of Lightning Protection and Electromagnetic Camouflage Amy Engineering UniversityNanjingJiangsu210007China Teaching and Research Office of Camouflage in Training Center Army Engineering UniversityXuzhouJiangsu221004China

The method of describing deformation camouflage spots based on feature space has some shortcomings,such as inaccurate description and difficult *** on the strong fitting ability of the generative adversarial network model,the distribution of deformation camouflage spot pattern can be directly fitted,thus simplifying the process of spot extraction and *** requirements of background spot extraction are analyzed *** calculation formula of limiting the range of image spot pixels is given and two kinds of spot data sets,forestland and snowfield,are *** feature is decomposed into shape,size and color features,and a GAN(Generative Adversarial Network)framework is *** effects of different loss functions on network training results are analyzed in the *** the meantime,when the input dimension of generator network is 128,the balance between sample diversity and quality can be *** effects of sample generation are investigated in two ***,the probability of the generated spots being distinguished in the background is counted,and the results are all less than 20% and mostly close to ***,the features of the spot shape are calculated and the independent sample T-test is applied to verify that the features are from the same distribution,and all the P-Values are much higher than *** subjective and objective methods prove that the spots generated by this method are similar to the background *** proposed method can directly generate the desired camouflage pattern spots,which provides a new technical method for the deformation camouflage pattern design and camouflage effect evaluation.

关键词： Deformation camouflage Generative adversarial network Spot feature Shape description

Time Dependence of Entropy Flux and Entropy Production of a Dissipative Dynamical System Driven by Non-Gaussian Noise

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Communications in Theoretical Physics 2008年第6期49卷 1561-1566页

作者： GUO Yong-Feng xu wei LI dong-Xi XIE Wen-Xian Department of Applied Mathematics Northwestern Polytechnical University Xi＇an 710072 China

A stochastic dissipative dynamical system driven by non-Gaussian noise is investigated. A general approximate Fokker-Planck equation of the system is derived through a path-integral approach. Based on the definition of Shannon＇s information entropy, the exact time dependence of entropy flux and entropy production of the system is calculated both in the absence and in the presence of non-equilibrium constraint. The present calculation can be used to interpret the interplay of the dissipative constant and non-Gaussian noise on the entropy flux and entropy production.

关键词： information entropy entropy flux and entropy production non-Gaussian noise Fokker-Planck equation

Fast source mask co-optimization method for high-NA EUV lithography

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Opto-Electronic Advances 2024年第4期7卷 44-54页

作者： Ziqi Li Lisong dong xu Ma Yayi wei EDA Center Institute of Microelectronics of Chinese Academy of SciencesBeijing 100029China Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China University of Chinese Academy of Sciences Beijing 100049China Guangdong Greater Bay Area Applied Research Institute of Integrated Circuit and Systems Guangzhou 510700China

Extreme ultraviolet(EUV)lithography with high numerical aperture(NA)is a future technology to manufacture the integrated circuit in sub-nanometer ***,source mask co-optimization(SMO)is an extensively used approach for advanced lithography process beyond 28 nm technology *** work proposes a novel SMO method to improve the image fidelity of high-NA EUV lithography system.A fast high-NA EUV lithography imaging model is established first,which includes the effects of mask three-dimensional structure and anamorphic ***,this paper develops an efficient SMO method that combines the gradient-based mask optimization algorithm and the compressivesensing-based source optimization algorithm.A mask rule check(MRC)process is further proposed to simplify the optimized mask *** illustrate that the proposed SMO method can significantly reduce the lithography patterning error,and maintain high computational efficiency.

关键词： computational lithography high-NA EUV lithography source-mask co-optimization lithography imaging model

基于MPC与Stanley的农机路径跟踪融合控制算法

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信息技术 2024年第8期48卷 65-70,78页

作者：刘文龙姜明耀王晨旭徐伟东东北石油大学秦皇岛校区电气信息工程系河北秦皇岛066004

针对智能农机的路径跟踪问题,基于模型预测控制(MPC)与Stanley控制提出一种融合控制算法。在农机运动学模型基础上,运用MPC算法设计路径跟踪控制律。在MPC算法的基础上通过权重系数与Stanley算法进行融合,并采用模糊规则对权重系数进行... 详细信息

针对智能农机的路径跟踪问题,基于模型预测控制(MPC)与Stanley控制提出一种融合控制算法。在农机运动学模型基础上,运用MPC算法设计路径跟踪控制律。在MPC算法的基础上通过权重系数与Stanley算法进行融合,并采用模糊规则对权重系数进行动态修正。搭建Carsim与Matlab/Simulink联合仿真平台,分别以不同速度对直线路径与圆形路径进行跟踪实验。结果表明,文中算法的控制性能优于常规MPC算法,在跟踪过程的前半段更为迅速,在跟踪过程的后半段更加平稳,直线路径跟踪误差在±2.5cm以内,特别适于农机初始位置偏差较大以及行驶速度较高的应用场合。

关键词：智能农机模型预测控制 Stanley控制模糊规则路径跟踪

Topological Vortices in a Spin-Triplet Superconductor

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Communications in Theoretical Physics 2008年第8期50卷 525-528页

作者： REN Ji-Rong wei Shao-Wen xu dong-Hui DUAN Yi-Shi Institute of Theoretical Physics Lanzhou University Lanzhou 730000 China

Based on the complex three-component order parameter model of a spin-triplet superconductor, by using the C-mapping theory, we derive a new equation describing the distribution of the magnetic field for vortices, which can be reduced to the modified London equation in the case of ｜ψ^2｜^2 ^- ｜ψ^3｜^2 = 0 and Wl^1= 1. A magnetic flux quantization condition for vortices in a spin-triplet superconductor is also derived, which is topological-invariant. Fhrthermore, the branch processes during the evolution of the vortices in a spin-triplet superconductor are discussed. We also point out that the sum of the magnetic flux quantization that those vortices carried is 2nФo （Фo is the unit magnetic flux）, that is to say, the sum of winding number is even, which needs to be proved by experiment.

关键词： spin-triplet superconductor topological defects bifurcation point

Segmental ureteroileal conduit resection for the treatment of distal upper urinary tract recurrence of bladder cancer fol lowing cystectomy

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Chinese Journal of Cancer 2016年第3期35卷 120-125页

作者： Shu‑Xiong Zeng Xin Lu wei‑dong xu Zhen‑Sheng Zhang Hai‑Hang Li Ying‑Hao Sun Chuan‑Liang xu Department of Urology Changhai HospitalSecond Military Medical UniversityShanghaiP.R.China Department of Burns Changhai HospitalSecond Military Medical UniversityShanghaiP.R.China.

Segmental ureterectomy is less invasive than radical nephroureterectomy and results in nephron preservation and satisfactory tumor *** study was to determine the feasibility of segmental ureteroileal conduit resection(SUICR) for patients with distal upper urinary tract recurrence of bladder cancer following radical *** patients with high-grade distal upper urinary tract recurrence underwent SUICR 15-108 months after radical *** surgical technique details of SUICR,operative results,and follow-up outcomes are *** median operation time was 280 min,and estimated blood loss was less than 100 ml One patient suffered from ileus 5 days after surgery and was managed *** evaluation showed high-grade stages pTa-pT1 diseases for these patients,and ureteral margins were all *** patient suffered from tumor recurrence,with a median follow-up of 39 *** preserved the ipsilateral renal unit and conformed to oncological principles during *** oncological outcome was satisfactory for these properly selected *** technique provides a valid alternative to nephroureterectomy for patients with imperative indications and high-grade upper urinary tract recurrence of bladder cancer following radical cystectomy.

关键词： Cystectomy, Urothelial carcinoma, Upper urinary tract recurrence, Segmental resection