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A synthetic aperture radar sea surface distribution estimation by n-order Bézier curve and its application in ship detection

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Acta Oceanologica Sinica 2016年第9期35卷 117-125页

作者： LANG Haitao ZHANG Jie wang yiduo ZHANG Xi MENG Junmin School of Science Beijing University of Chemical Technology Jiangsu Key Laboratory of Big Data Analysis Technology/B-DAT Nanjing University of Information Science &Technology The First Institute of Oceanography State Oceanic Administration

To dates,most ship detection approaches for single-pol synthetic aperture radar（SAR） imagery try to ensure a constant false-alarm rate（CFAR）.A high performance ship detector relies on two key components：an accurate estimation to a sea surface distribution and a fine designed CFAR ***,a novel nonparametric sea surface distribution estimation method is developed based on n-order Bézier *** estimate the sea surface distribution using n-order Bézier curve,an explicit analytical solution is derived based on a least square optimization,and the optimal selection also is presented to two essential parameters,the order n of Bézier curve and the number m of sample ***,to validate the ship detection performance of the estimated sea surface distribution,the estimated sea surface distribution by n-order Bézier curve is combined with a cell averaging CFAR（CA-CFAR）.To eliminate the possible interfering ship targets in background window,an improved automatic censoring method is *** experiments prove that in terms of sea surface estimation performance,the proposed method is as good as a traditional nonparametric Parzen window kernel method,and in most cases,outperforms two widely used parametric methods,K and G0 *** terms of computation speed,a major advantage of the proposed estimation method is the time consuming only depended on the number m of sample points while independent of imagery size,which makes it can achieve a significant speed improvement to the Parzen window kernel method,and in some cases,it is even faster than two parametric *** terms of ship detection performance,the experiments show that the ship detector which constructed by the proposed sea surface distribution model and the given CA-CFAR algorithm has wide adaptability to different SAR sensors,resolutions and sea surface homogeneities and obtains a leading performance on the test dataset.

关键词： Bézier curve nonparametric method ship detection sea surface distribution synthetic aperture radar

Solvent-stabilized few-layer violet phosphorus and its ultrafast nonlinear optics

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Nano Research 2023年第4期16卷 5843-5849页

作者： Li Zhou Jianlong Kang Yulan Dong yiduo wang Yejun Li Han Huang Si Xiao Yingwei wang Jun He Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083China Key Laboratory of Hunan Province for Statistical Learning and Intelligent Computation School of Mathematics and StatisticsHunan University of Technology and BusinessChangsha 410205China

Featured with high thermal decomposition temperature and layered structure,violet phosphorus(VP)offers an unparalleled stable allotrope of phosphorus to demonstrate the optoelectronic device and photonics elements with high performance at the ***,we report few-layer and hundreds of nanometer-sized VP with robust stability in different solvents and ambient conditions by ultrasound-assisted liquid phase exfoliation *** the first time,the ultrafast carrier dynamics and thirdorder nonlinear optical response of VP were ***-picosecond timescale ultrafast carrier dynamic and ultrafast nonlinear saturable absorption of VP were *** findings demonstrated that VP possessed a promising potential for use in ultrafast nonlinear photonic applications such as saturable absorbers and optical switches.

关键词： violet phosphorus stability ultrafast nonlinear optics saturable absorption

2D Nb_(2)CT_(x) MXene/MoS_(2) heterostructure construction for nonlinear optical absorption modulation

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Opto-Electronic Advances 2023年第10期6卷 6-16页

作者： yiduo wang Yingwei wang Yulan Dong Li Zhou Jianlong Kang Ning wang Yejun Li Xiaoming Yuan Zhengwei Zhang Han Huang Mengqiu Long Si Xiao Jun He Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083China Key Laboratory of Hunan Province for Statistical Learning and Intelligent Computation School of Mathematics and StatisticsHunan University of Technology and BusinessChangsha 410205China.

Two-dimensional(2D)nonlinear optical mediums with high and tunable light modulation capability can significantly stimulate the development of ultrathin,compact,and integrated optoelectronics devices and photonic elements.2D carbides and nitrides of transition metals(MXenes)are a new class of 2D materials with excellent intrinsic and strong light-matter interaction ***,the current understanding of their photo-physical properties and strategies for improving optical performance is *** address this issue,we rationally designed and in situ synthesized a 2D Nb_(2)C/MoS_(2) heterostructure that outperforms pristine Nb2C in both linear and nonlinear optical *** agreement between experimental and theoretical results demonstrated that the Nb_(2)C/MoS_(2) inherited the preponderance of Nb_(2)C and MoS_(2) in absorption at different wavelengths,resulting in the broadband enhanced optical absorption *** addition to linear optical modulation,we also achieved stronger near infrared nonlinear optical modulation,with a nonlinear absorption coefficient of Nb_(2)C/MoS_(2) being more than two times that of the pristine Nb_(2)*** results were supported by the band alinement model which was determined by the X-ray photoelectron spectroscopy(XPS)experiment and first-principal theory *** presented facile synthesis approach and robust light modulation strategy pave the way for broadband optoelectronic devices and optical modulators.

关键词： MXenes optical properties modulation in situ growth carriers transfer nonlinear optical absorption

机器人辅助改良Y型原位新膀胱术的疗效和安全性

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现代泌尿外科杂志 2025年第2期30卷 137-142页

作者：赵烔蕾毛卫浦王奕铎许斌陈恕求朱伟东陈明吴剑平东南大学医学院江苏南京210003 东南大学附属中大医院泌尿外科江苏南京210009 东南大学外科研究中心泌尿外科研究所江苏南京210018 东南大学附属中大医院溧水分院南京市溧水区人民医院泌尿外科江苏南京211299

目的探讨本中心改良术式机器人辅助改良Y型原位新膀胱术的疗效和安全性,为探索手术技巧和提高膀胱癌手术治疗水平提供参考。方法回顾性分析2020年2月—2022年8月在东南大学附属中大医院泌尿外科接受机器人辅助腹腔镜下根治性膀胱切除术... 详细信息

目的探讨本中心改良术式机器人辅助改良Y型原位新膀胱术的疗效和安全性,为探索手术技巧和提高膀胱癌手术治疗水平提供参考。方法回顾性分析2020年2月—2022年8月在东南大学附属中大医院泌尿外科接受机器人辅助腹腔镜下根治性膀胱切除术、淋巴结清扫和改良Y型回肠原位新膀胱术的44例患者的临床资料,对手术体位、Trocar位置、关键手术步骤、患者围手术期情况、术后并发症、术后1年的新膀胱体积、最大尿流率、残余尿量、肾功能和随访期间的尿控功能进行报告与分析。结果44例患者手术均顺利完成,手术时间(314.32±51.02)min,改良Y型回肠原位新膀胱术时间(103.52±9.56)min,术中出血量(128.18±57.27)mL;术后恢复液体摄入时间(4.16±0.86)d,术后(14.02±3.20)d拔出输尿管支架和导尿管,拔出导尿管后1~2 d出院。15例患者发生Clavien-DindoⅡ级并发症,2例患者发生Ⅲ级并发症。患者平均随访时间(20.77±5.90)个月,随访期间发现1例患者排尿困难、2例泌尿道结石、2例不完全肠梗阻。术后新膀胱容量(195.75±15.51)mL,最大尿流率(20.30±2.05)mL/s,残余尿量(19.86±13.80)mL,血清肌酐(81.98±25.97)μmol/L。术后3个月患者日间和夜间尿失禁的发生率分别为20.45%和29.55%,术后6个月分别是11.36%和18.18%,术后12个月分别为4.55%和9.09%。结论机器人辅助改良Y型回肠原位新膀胱术具有良好的疗效及安全性,术后并发症发生率较低,可进一步在临床应用。

关键词：膀胱癌机器人辅助腹腔镜根治性膀胱切除术改良Y型回肠原位新膀胱术尿流改道

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Revealing the intrinsic nonlinear optical response of a single MoS_(2) nanosheet in a suspension based on spatial self-phase modulation

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Photonics Research 2020年第11期8卷 1725-1733页

作者： Si Xiao Ying Ma Yilin He yiduo wang Hao Xin Qi Fan Jingdi Zhang Xiaohong Li Yu Zhang Jun He Yingwei wang Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China

The reorientation of 2D materials caused by nonlocal electron coherence is the formation mechanism of 2D material spatial self-phase modulation under laser irradiation,which is widely known as the“wind-chime”***,we present a method that provides strong evidence for the reorientation of 2D-material-induced spatial self-phase *** traditional“wind-chime”model was modified by taking into account the attenuation,i.e.,damping of the incident light beam in the direction of the optical ***,we can extract the nonlinear refractive index of a single MoS2 nanosheet,instead of simply obtaining the index from an equivalent MoS2 film that was constructed by all *** approach introduces a universal and accurate method to extract intrinsic nonlinear optical parameters from 2D material systems.

关键词： nonlinear intrinsic phase

Association between hsa-miR-34b/c rs4938723 T>C promoter polymorphism and cancer risk: a meta-analysis based on 6,036 cases and 6,204 controls

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Chinese Journal of Cancer Research 2014年第3期26卷 315-322页

作者： Tao Tao Shuqiu Chen Bin Xu Chunhui Liu yiduo wang Yeqing Huang Ming Chen Department of Urology Affiliated Zhongda HospitalMedical School Surgical Research Center Medical School Institute of Urology Southeast University

Objective： Emerging evidence shows that microRNAs （miRNAs） function as tumor suppressors or oncogenes in human carcinogenesis. A single nucleotide polymorphism （SNP） located in the pri-miRNA promoter may affect the processing and expression of mature miRNA. However, previous studies showed conflicting results regarding the association of hsa-miR-34b/c rs4938723 T 〉 C promoter polymorphism with cancer. Therefore, we conducted a meta-analysis to determine the association of polymorphism with cancer risk. Methods： A computerized search of PubMed, Web of Science, and Chinese National Knowledge Infrastructure （CNKI） for publications on hsa-miR-34b/c rs4938723 T 〉 C promoter polymorphism and cancer risk was performed and the genotype data were analyzed in a meta-analysis. Odds ratios （ORs） with 95% confidence intervals （CIs） were estimated to assess the association. Test of heterogeneity, cumulative meta-analysis, sensitivity analysis and assessment of bias were performed in our meta-analysis by STATA software 12.0. Results： There was no significant association between hsa-miR-34b/c rs4938723 polymorphism and overall cancer risk in the comparison models. Moreover, subgroup analysis revealed that the variant CT （OR = 1.19, 95% CI： 1.03-1.37） and CC/CT （OR =1.18, 95% CI： 1.03-2.35） genotypes were associated with an increased risk of hepatocellular carcinoma （HCC） compared with wild-type TT genotype. However, a decreased risk of colorectal cancer （CRC） was found in the genetic model of CCFFF （OR =0.66, 95% CI： 0.47-0.92） and CC/CT-TT （OR =0.67, 95% CI： 0.49-0.93）. Conclusions： The results suggest that hsa-miR-34b/c rs4938723 polymorphism may play an opposite role in different types of cancer based on current studies, which is the main origin of heterogeneity in this metaanalysis. Further large-scale studies and functional studies between this polymorphism and cancer risk are warranted.

关键词： Hsa-miR-34b/c polymorphism cancer meta-analysis

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叙事学视角下的国防白皮书英译研究

外语研究 2019年第2期36卷 77-81,95页

作者：王一多国防科技大学国际关系学院江苏南京210039

国防白皮书是关于国防事务的重要文件或报告书,每个国家都会定期或不定期发表,其主要功能包括政策宣示、规划指导、塑造形象、国防资源争取等。国防白皮书的撰写和英译关系到国防白皮书是否能起到应起的作用、达到理想的宣传效果。本文... 详细信息

国防白皮书是关于国防事务的重要文件或报告书,每个国家都会定期或不定期发表,其主要功能包括政策宣示、规划指导、塑造形象、国防资源争取等。国防白皮书的撰写和英译关系到国防白皮书是否能起到应起的作用、达到理想的宣传效果。本文以2013年《中国武装力量的多样化运用》和2014年美国《四年防务评估报告》为例,从经典叙事学角度对两个文本进行微观的对比分析,展示两者的叙事差异;并在此基础上从后经典叙事学探讨国防白皮书英译时的叙事建构。本文认为,作为一种外宣翻译,国防白皮书英译需从经典叙事学入手考虑文本表达,从后经典叙事学入手考虑意识形态表达,从而取得理想的宣传效果,消除所谓"中国威胁论",对外树立中国军事安全形象。

关键词：叙事学军事外宣翻译叙事建构《中国武装力量的多样化运用》2013 《四年防务评估报告》2014 《中国军力报告》2013

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翻译批评标准体系的多层级构建

外语研究 2022年第3期39卷 81-85,91页

作者：王一多国防科技大学国际关系学院江苏南京210039

翻译批评标准是翻译批评中非常重要的研究内容,学理上,无论是对于传统的经验性的、文学性的翻译研究,还是对于以严格的现代语言学为基础的翻译“科学”研究,翻译批评标准都紧紧围绕着翻译活动的几个要素展开。在对翻译作品进行评价的时... 详细信息

翻译批评标准是翻译批评中非常重要的研究内容,学理上,无论是对于传统的经验性的、文学性的翻译研究,还是对于以严格的现代语言学为基础的翻译“科学”研究,翻译批评标准都紧紧围绕着翻译活动的几个要素展开。在对翻译作品进行评价的时候,通常有学术、社会、行业规范三类标准,这三类标准或者重合,或者有不同的侧重,或者有自己的特点。本文认为这三类翻译批评标准可以视为理想、现实和规范三个层面,即“要怎么评”,“是怎么评”和“能怎么评”,从而构成多层级的翻译批评标准体系。

关键词：翻译标准翻译批评标准多层级翻译批评标准体系

LB100对EGFR基因突变的肺腺癌细胞吉非替尼获得性耐药的逆转作用

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中华医学杂志 2016年第42期96卷 3398-3402页

作者：单姗王艺朵任涛同济大学附属东方医院呼吸内科上海200123 复旦大学附属华山医院病理科

目的探讨蛋白质磷酸酶2A（PP2A）活性抑制剂LB100对表皮生长因子受体（EGFR）基因突变的肺腺癌细胞吉非替尼获得性耐药的逆转作用。方法以吉非替尼耐药细胞系NCI-1975及自行建立的吉非替尼耐药原代细胞株44-1为对象，通过基因测序法确... 详细信息

目的探讨蛋白质磷酸酶2A（PP2A）活性抑制剂LB100对表皮生长因子受体（EGFR）基因突变的肺腺癌细胞吉非替尼获得性耐药的逆转作用。方法以吉非替尼耐药细胞系NCI-1975及自行建立的吉非替尼耐药原代细胞株44-1为对象，通过基因测序法确定两种细胞EGFR基因突变类型；以吉非替尼分别单独或联合LB100处理两种细胞，通过细胞计数,8试剂盒（CCK8）计算不同用药组的半数抑制浓度（IC50）值，比较吉非替尼联合LB100后NCI-1975和44．1细胞对吉非替尼敏感性的变化；建立裸鼠移植瘤模型，通过比较各药物处理组移植瘤体积，观测联合LB100后吉非替尼对肿瘤生长抑制的变化。结果44-1及NCI—H1975细胞均携带EGFR基因敏感性L858R突变及耐药性T790M突变；44-1及NCI-1975细胞均显示对吉非替尼耐药性，IC50值分别为23．0、16．7μmol／L；联合LB100后，IC50值分别降至6．9、3．4μmol／L；裸鼠NCI-1975移植瘤实验中，LB100明显提高了吉非替尼对肿瘤生长的抑制能力（P〈0．05）。结论LB100可在一定程度上逆转肺腺癌细胞对吉非替尼的耐药性。

关键词：肺肿瘤受体,表皮生长因子抗药性,肿瘤磷蛋白磷酸酶吉非替尼

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