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Science China(Technological Sciences) 2022年第2期65卷 293-301页

作者： ADIL Emin xie wenlu LONG Xiao WANG Xiao SONG XiaoQiang CHEN Yue FU YuJun LI JunShuai LI YaLi HE DeYan Key Laboratory of Special Function Materials&Structure Design of the Ministry of Education and School of Materials&EnergyLanzhou UniversityLanzhou 730000China

In this work,we report a high-performance self-standing supercapacitor electrode of mixed nickel manganese sulfides (NMSs)with a cracked-bark shape grown by one-step electrochemical deposition on activated carbon cloth (ACC).The electrode possesses outstanding electrochemical properties,including a high specific capacitance of up to 3142.8 F g^(-1)at 1.0 A g^(-1),the high-rate performance (~1206.8 F g^(-1)at 60.0 A g^(-1)),and cycle stability (~92.3%capacitance retention after 8000 cycles at8 A g^(-1)).An asymmetric supercapacitor assembled using NMSs on ACC as the cathode,activated carbon on carbon cloth as the anode and 1.0 mol L;KOH as the electrolyte delivers a high energy density of 111.2 W h kg^(-1)at 800.0 W kg^(-1)and the prominent cycling performance of~93.2%capacitance retention after 10000 cycles at 5 A g^(-1)with the Columbic efficiency of around 100%during these 10000 *** high performance and facile preparation indicate that the NMSs on ACC hold a huge potential as the electrode for supercapacitors.

关键词： aqueous asymmetric supercapacitors nickel manganese sulphides high specific capacitance high energy density long cycle stability

IMAGE OBJECT DETECTION BASED ON FRACTIONAL BROWNIAN MOTION

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Journal of Electronics(China) 1997年第4期14卷 289-294页

作者： xie wenlu xie Weixin(School of Electronic Engineering, Xidian University, Xi’an 710071)

Fractional Brownian motion, continuous everywhere and differentiable nowhere, offers a convenient modeling for irregular nonstationary stochastic processes with long-term dependencies and power law behavior of spectrum over wide ranges of frequencies. It shows high correlation at coarse scale and varies slightly at fine scale, which is suitable for and successful in describing and modeling natural scenes. On the other hand, man-made objects can be constructively well described by using a set of regular simple shape primitives such as line, cylinder, etc. and are free of fractal. Based on the difference, a method to discriminate man-made objects from natural scenes is provided. Experiments are used to demonstrate the good efficiency of developed technique.

关键词： Fractal Fractional Brownian motion Image object detection

IMAGE OBJECT DETECTION BASED ON FRACTIONAL BROWNIAN MOTION

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Journal of Electronics(China) 1996年第4期13卷 349-354页

作者： xie wenlu xie Weixin(School of EJectronic Engineering, Xidjan University, Xi’an, 710071)

Fractional Brownian motion, continuous everywhere and differentiable nowhere, offers a convenient modeling for irregular nonstationary stochastic processes with long-term dependencies and power law behavior of spectrum over wide ranges of frequencies. It shows high correlation at coase scale and varies slightly at fine scale, which is suitable for and successful in describing and modeling natural scenes. On the other hand, man-made objects can be constructively well described by using a set of regular simple shape primitives such as line, cylinder, etc. and are free of fractal. Based on the difference, we provide a method to discriminate man-made objects from natural scenes. Experiments are used to demonstrated the good efficiency of the developed technique.

关键词： Fractal fBm Image object detection

我国2013-2019年计划妊娠女性孕前用药特征分析

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中国计划生育学杂志 2024年第6期32卷 1236-1241页

作者：王龙谢文璐黄佳欣吴思昱刘玫亚刘友红徐蝶杨英马旭兰州大学公共卫生学院流行病与卫生统计学研究所 730000 国家卫生健康委科学技术研究所

目的:了解我国计划妊娠女性孕前用药特征,为孕前生殖健康促进提供数据支持。方法:以在2013-2019年参加国家免费孕前优生健康检查项目(NFPCP)且自报有服药史871152例计划妊娠女性为研究对象,以《国家基本药物目录(2018版)》为对照解析自... 详细信息

目的:了解我国计划妊娠女性孕前用药特征,为孕前生殖健康促进提供数据支持。方法:以在2013-2019年参加国家免费孕前优生健康检查项目(NFPCP)且自报有服药史871152例计划妊娠女性为研究对象,以《国家基本药物目录(2018版)》为对照解析自报药物名称及其类别,最后使用描述性流行病学方法分析研究对象孕前用药特征,并使用卡方检验分析不同基线特征下各类别药物的分布差异。结果:有高达2.2%的计划妊娠女性报告服用药物,且服药种类复杂。孕前用药主要为维生素/矿物质类药物(64.1%),其他依次为妇产科与计划生育用药(7.5%)、抗微生物药物(6.8%)、激素及影响内分泌药(6.7%)、镇痛/解热/抗炎/抗风湿/抗痛风药(5.4%)和中药(5.0%)。高龄、汉族、高中以上文化程度、城镇户籍、非农民职业、经产妇、有不良妊娠史及超重肥胖者服用抗微生物药、激素及影响内分泌药、镇痛解热/抗炎/抗风湿/抗通风药及中药构成比较高。结论:孕前用药种类复杂,已对安全用药与健康咨询形成挑战。孕前健康咨询时,应关注高龄、汉族、高中以上学历、城镇户籍、除农民以外的其他职业、经产妇、不良妊娠结局史与超重肥胖女性服药情况,识别药物妊娠与胚胎毒性,降低药物相关不良妊娠结局事件发生风险。

关键词：计划妊娠用药安全描述性流行病学孕前健康

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分数布朗表面的电磁散射

西安电子科技大学学报 1998年第2期25卷 160-164页

作者：谢文录谢维信西安电子科技大学电子工程学院

讨论了理想导电的一维分数布朗表面的电磁散射问题，给出了散射系数均值和协方差的基尔霍夫解．通过数值计算得出散射能量的角分布图，分析了它们与分形维数和表面起伏的关系．

关键词：电磁散射分形分数布朗运动

我国计划妊娠女性妊娠间隔及其影响因素的横断面研究

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中国计划生育学杂志 2024年第8期32卷 1727-1733页

作者：王龙黄佳欣谢文璐吴思昱刘玫亚刘友红徐蝶杨英马旭兰州大学公共卫生学院流行病与卫生统计学研究所 730000 国家卫生健康委科学技术研究所

目的:描述我国计划妊娠女性妊娠间隔(IPI)的分布现状及其影响因素。方法:选择2010年1月-2018年12月两次参加国家免费孕前优生健康检查项目的育龄女性作为研究对象。进行分析时IPI同时作为定量变量和定性变量,定性变量包括短IPI(<18个月... 详细信息

目的:描述我国计划妊娠女性妊娠间隔(IPI)的分布现状及其影响因素。方法:选择2010年1月-2018年12月两次参加国家免费孕前优生健康检查项目的育龄女性作为研究对象。进行分析时IPI同时作为定量变量和定性变量,定性变量包括短IPI(<18个月)、适宜IPI(18~59个月)及长IPI(≥60个月)3组,以适宜IPI为对照。使用描述性流行病学方法研究IPI的分布,并采用广义线性回归模型和logistics回归模型探索IPI的影响因素并估计其关联强度指标β与比值比(OR)及其95%置信区间(CI)。结果:计划妊娠女性的IPI中位数为21.3个月,短IPI和长IPI分别占40.7%与1.6%。≥35岁者短IPI风险比20~24岁者降低87.0%(95%CI 86.0~88.0);相对于汉族、高中以下文化程度、正常体重及前次分娩无不良妊娠结局史者,少数民族、高中及以上文化程度、低体重与有不良妊娠结局史者短IPI风险分别增加21.0%(95%CI 16.0~26.0)、3.0%(95%CI 1.0~5.0)、5.0%(95%CI 2.0~9.0)与11.0%(95%CI 8.0~13.0);而与农村户籍、农民、正常体重、不饮酒及前次妊娠分娩方式为阴道分娩者相比,城市户籍、非农民、超重、饮酒及剖宫产者短IPI风险分别降低24.0%(95%CI 19.0~28.0)、11.0(95%CI 9.0%~16.0%)、8.0%(95%CI 6.0~10.0)、25.0%(95%CI 16.0~33.0)与53.0%(95%CI 52.0~55.0);与华北地区相比,其他各地区的短IPI风险均增加(P均<0.05)。结论:我国近50%的计划妊娠女性存在IPI过短或过长问题,未来应加强对有低龄、少数民族、高中及以上文化程度、低体重、农村户籍、农民、以及前次分娩为阴道分娩和发生不良妊娠结局等短IPI易发特征女性的宣传教育,帮助其选择适宜的IPI。

关键词：计划妊娠女性妊娠间隔影响因素

DETECTION OF KNOWN SIGNALS IN 1/f FRACTAL NOISE

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Journal of Electronics(China) 1999年第2期16卷 152-158页

作者： xie wenlu Zhang Qianling(ASIC and Systems State Key Lab, Fudan University, Shanghai 200433)Chen Yanhui xie Weixin(Department of Electronic Engineering, Xidian University, Xi’an 710071)

Based on the whitening property of wavelet transformation for 1/f noise, this paper addresses the problem of detecting deterministic signals in the presence of 1/f fractal noise. The transfer function of whitening filter is provided as well as the condition for whitening. The receiver structure based on Karhunen-Loeve expansion and the decision rule are also given. Finally performance of the detector is analyzed.

关键词： Signal detection Fractal Wavelet analysis l/f-type signal

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TPCM三阶三路安全可信平台防护架构

武汉大学学报（理学版） 2018年第2期64卷 109-114页

作者：黄坚会沈昌祥谢文录北京工业大学信息学部北京100124 华大半导体有限公司上海201203

提出三阶三路（3P3C）计算机架构防护理论,基于该理论实现了可信平台控制模块（TPCM）度量,系统控制、构建和保持可信运行环境.从系统架构角度解决计算机启动源头、平台及运行环境的不可信问题.该方法确保作为信任根的TPCM芯片首先上电... 详细信息

提出三阶三路（3P3C）计算机架构防护理论,基于该理论实现了可信平台控制模块（TPCM）度量,系统控制、构建和保持可信运行环境.从系统架构角度解决计算机启动源头、平台及运行环境的不可信问题.该方法确保作为信任根的TPCM芯片首先上电,主导计算机电源控制系统,度量确认启动代码的可信性和完整性.在计算机启动过程中进行可信链的传递,若检测到BIOS等固件被恶意篡改或平台环境受到攻击,则根据预先写在TPCM内部的安全策略让计算机进入受控非可信工作模式或阻止其上电等.当可信操作系统及可信软件基（TSB）加载后,运行应用软件过程中,能实时动态保持计算机的可信运行环境,直至系统关机.依该方法设计的TPCM芯片对计算机有主动的、绝对的控制权.极端情况下,一旦恶意代码入侵而导致系统失控的情况发生,TPCM可以采取切断物理通道、关闭计算机电源等绝对性保护措施保护数据及网络安全.

关键词：三阶三路可信平台控制模块安全可信主动防御动态度量可信运行环境

Mass extinctions, their causes and consequences: an interview with Douglas *** and Shuzhong Shen

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National Science Review 2024年第1期11卷 66-70页

作者： Shucheng xie State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences at Wuhan

‘Mass extinctions’ have been a hot topic for several decades. What triggers a mass extinction? How does a mass extinction impact the evolution of life? How does our ecosystem recover after a mass extinction? These questions attracted the interest of both scientists and the public *** spoke to two renowned researchers in the field of mass extinctions: Prof. Douglas H. Erwin from the National Museum of Natural History of the USA, and Prof. Shuzhong Shen from Nanjing University, China.

关键词： Stratigraphy

Cracked bark-inspired ternary metallic sulfide(NiCoMnS_(4)) nanostructure on carbon cloth for high-performance aqueous asymmetric supercapacitors

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Science China Materials 2021年第7期64卷 1632-1641页

作者： Xiao Wang Ling Tian Xiao Long Mingzhe Yang Xiaoqiang Song wenlu xie Dequan Liu Yujun Fu Junshuai Li Yali Li Deyan He Key Laboratory of Special Function Materials&Structure Design of the Ministry of Education and School of Physical Science&TechnologyLanzhou UniversityLanzhou 730000China

In this paper,we report a high-performance selfsupported supercapacitor electrode composed of a cracked bark-shaped Ni-Co-Mn ternary metallic sulfide(NiCoMnS4)nanostructure on carbon cloth prepared by a simple one-step hydrothermal process and subsequent electrochemical *** electrode delivers a high specific discharge capacity of up to 2470.4 F g^(-1) at 1 A g^(-1) and high rate performances of1635.6 F g^(-1) at 10 A g^(-1) and 910.2 F g^(-1) even at 32 A g^(-1).Cycling tests indicate that NiCoMnS_(4) could maintain >91.1% of its initial capacity and nearly 100% Coulombic efficiency over10,000 cycles at 8 A g^(-1).An aqueous asymmetric supercapacitor assembled with NiCoMnS_(4) as the cathode,activated carbon as the anode,and 1 mol L^(-1) KOH as the electrolyte delivers an energy density of 68.2 W h kg^(-1)at 850.1 W kg^(-1) and capacity retention of 92.5% after 10,000 cycles at 4 A g^(-1).Given the excellent performance and simple material preparation of our proposed device,this study provides a valuable foundation for the development of self-supported metallic sulfide-based electrodes with high electrochemical properties for potential application in aqueous asymmetric supercapacitors.

关键词： high-performance self-supported electrodes ternary metallic sulfide high specific capacity aqueous asymmetric supercapacitors high energy density