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A lattice-based signcryption scheme without random oracles

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Frontiers of Computer Science 2014年第4期8卷 667-675页

作者： xiuhua lu Qiaoyan WEN Zhengping JIN Licheng WANG Chunli YANG State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China Mathematics and Information Science Langfang Teachers University Langfang 065000 China Information Security Center Beijing University of Posts and Telecommunications Beijing 100876 China

In order to achieve secure signcryption schemes in the quantum era, Li Fagen et al. [Concurrency and Computation： Practice and Experience, 2012, 25（4）： 2112-2122] and Wang Fenghe et al. [Applied Mathematics ＆ Information Sciences, 2012, 6（1）： 23-28] have independently extended the concept of signcryption to lattice-based cryptography. However, their schemes are only secure under the random or- acle model. In this paper, we present a lattice-based signcryp- tion scheme which is secure under the standard model. We prove that our scheme achieves indistinguishability against adaptive chosen-ciphertext attacks （IND-CCA2） under the learning with errors （LWE） assumption and existential unforgeability against adaptive chosen-message attacks （EUF- CMA） under the small integer solution （SIS） assumption.

关键词： signcryption standard model lattice-based cryptography learning with errors problem small integer solution problem

RESPONSE OF SEDIMENT YIELD TO BASIN CHARACTERISTICS IN THE MIDDLE YELLOW RIVER BASIN

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International Journal of Sediment Research 2003年第2期 260-265页

作者： Jinfa lu,xiuhua HUANG Institute of Geographical Sciences and Natural Resources Chinese Academy of Sciences (CAS) Institute of Remote Sensing Application Chinese Academy of Sciences (CAS) 100101 Beijing 100101 Beijing

More than 50 river basins with gauging stations were chosen for study on relations between sediment yield and basin characteristics in the Middle Yellow River Basin of China. With drainage areas ranging from 500 to 2,500 km2, these basins can be categorized into 7 types with different physiographical backgrounds. A bulk set of data on sediment yield and basin characteristics, such as surface material, vegetation cover, and morphological features, were collected using remote sensing combined with field investigation. Based on these data, a statistical technique was used to comprehensively analyze the response of sediment yield to basin characteristics. The results show that the best correlation occurs between specific sediment yield and surface material, followed subsequently by vegetation cover and drainage density. Precipitation has a minor influence on sediment yield compared with the former three factors. Due to heavy disturbance of vegetation coverage, surface material, and morphological development, single characteristic relations could not adequately describe specific sediment yield. Thus, a multiple-characteristic relation was developed between specific sediment yield and basin characteristics. Morphological features and rainfall could exert an important influence on sediment production of the river basins only when vegetation and surface material are homogenous.

关键词： Sediment yield Basin characteristics Middle Yellow River Basin

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草木樨流浸膏片对类风湿性关节炎的疗效观察

中药药理与临床 2015年第1期31卷 258-260页

作者：卢秀花临沂市沂水中心医院沂水276400

目的:观察草木樨流浸膏片对类风湿性关节炎患者临床疗效及血清炎症因子的影响,探讨草木樨流浸膏片对类风湿性关节炎的作用机制。方法:将80例类风湿性关节炎患者随机分为两组,试验组给予草木樨流浸膏片800mg,tid,对照组给予双氯芬酸钠片5... 详细信息

目的:观察草木樨流浸膏片对类风湿性关节炎患者临床疗效及血清炎症因子的影响,探讨草木樨流浸膏片对类风湿性关节炎的作用机制。方法:将80例类风湿性关节炎患者随机分为两组,试验组给予草木樨流浸膏片800mg,tid,对照组给予双氯芬酸钠片50mg,tid,分别于治疗前及治疗6周后评估患者病情活动性,采用酶联免疫法测定各受试者血清中炎症因子的浓度。结果:(1)治疗前,两组患者病情活动指标:晨僵时间、关节疼痛个数、关节压痛级别、类风湿因子、血沉、C反应蛋白评价指标无显著差异;炎症因子水平无显著差异;(2)治疗6周后∶两组受试者病情明显改善,草木樨流浸膏片800mg(tid)组有效率明显高于对照组;其中与对照组相比,晨僵时间、关节疼痛级别试验指标差异具有显著性(P<0.05),炎症因子水平明显降低(P<0.05),其中TNF-α降低26.6±3.1(pg/ml),IL-6降低0.9±0.4(pg/ml),且胃肠道不良反应发生率(1/40)显著低于对照组(5/40)。结论:草木樨流浸膏片对类风湿性关节炎患者具有明显的临床疗效,其机制可能与调节患者炎症因子水平有关。

关键词：草木樨流浸膏片类风湿性关节炎 TNF-α IL-6

Spectral matching based remote sensing identification of two main crop rotation patterns in a large irrigation district

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中国水利水电科学研究院学报(中英文) 2024年

作者： DUAN Yuanyuan CHEN xiuhua LIU Jun YE Mao lu Wenjing LIU Hongjie China Institute of Water Resources and Hydropower Research Application Center of Remote Sensing Technology Research Center on Flood & Drought Disaster Prevention and Reduction of the Ministry of Water Resources Qingdao Comcore Technologies Co. Ltd Sucheng District Water Resources Bureau

Abstract:The rapid identification of planting patterns for major crops in a large irrigated district has vital importance for irrigation management,water fee collection,and crop yield *** this study,the OTSU algorithm and Mean-Shift algorithm were employed to automatically determine threshold values for mapping two main rotated crop patterns at the pixel scale.A time series analysis was conducted to extract the spatial distribution of rice-wheat and wheat-maize rotations in the Chuanhang irrigation district from 2016 to *** results demonstrate that both threshold segmentation algorithms are reliable in extracting the spatial distribution of the crops,with an overall accuracy exceeding 80%.Additionally,both Kappa coefficients surpass 0.7,indicating better performance by OTSU *** the period from 2016 to 2020,the area occupied by ricewheat rotation cropping ranged from 12 500 to 14 400 hm2;whereas wheat-maize rotation cropping exhibited smaller and more variable areas ranging from 19730 to 34070 *** findings highlight how remote sensing-based approaches can provide reliable support for rapidly and accurately identifying the spatial distribution of main crop rotation patterns within a large irrigation district.

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Effects of Panax ginseng,Codonopsis pilosula and Pseudostellaria heterophylla on Sexual Maturity of SD Female Rats

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Medicinal Plant 2018年第2期9卷 65-67,72页

作者： Zhijun WANG Xiaosu WANG Yuhua CHEN Jing KONG xiuhua lu College of Life Sciences Zhejiang University Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Shanghai University of Traditional Chinese Medicine Biology Teaching & Research Section No.2 High School of East China Normal University

[Objectives] To study the effects of Panax ginseng,Codonopsis pilosula and Pseudostellaria heterophylla on the growth and development of SD female rats. [Methods] The rats were randomly divided into control group,P. ginseng group,C. pilosula group,and P. heterophylla group,intragastrically administered with physiological saline,P. ginseng,C. pilosula,and P. heterophylla for 2 weeks,daily vaginal smear inspection was performed,estradiol( E_2) level before and after intervention was detected,rats were dissected,took out ovary and uterus,and calculated the ovarian index and uterus index. [Results]In 4 groups of rats,there was no significant difference in the time of sexual maturity and ovarian index; compared with the control group,E_2 level of C. pilosula group and P. ginseng group were higher( P lusions] P. ginseng and C. pilosula may lead to sexual maturity of SD female rats,while P. ginseng,C. pilosula and P. heterophylla can promote increase of body weight of SD female rats.

关键词： Panax ginseng Codonopsis pilosula Pseudostellaria heterophylla Sexual maturity

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可撤销的高效格基代理签名

四川大学学报（工程科学版） 2016年第1期48卷 139-145页

作者：路秀华温巧燕王励成廊坊师范学院数学与信息科学学院河北廊坊065000 北京邮电大学网络与交换技术国家重点实验室北京100876 北京邮电大学信息安全中心北京100876

江明明等在2014年提出的格上代理签名方案,不能提供代理授权的公开可验证性,且需要安全信道来传输授权信息。针对这一问题,引入授权证书,提供了代理授权的公开可验证性,解除了原方案对安全信道的依赖。同时,改变原方案的授权方式,将代... 详细信息

江明明等在2014年提出的格上代理签名方案,不能提供代理授权的公开可验证性,且需要安全信道来传输授权信息。针对这一问题,引入授权证书,提供了代理授权的公开可验证性,解除了原方案对安全信道的依赖。同时,改变原方案的授权方式,将代理签名的签名操作次数从2次降到了1次,提高了方案效率。另外,改进方案还引入了一个撤销列表,实现了代理授权在有效期内的撤销功能。分析表明,相比较于江明明等人的方案,新方案从安全性和效率上,都有了较大的改进。

关键词：基于格的密码体制代理签名授权撤销无陷门签名后量子密码

董事会独立性的交互效应和中国资本市场独立董事制度政策效果的评估

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管理世界 2009年第7期25卷 133-144页

作者：郑志刚吕秀华中国人民大学财政金融学院中国财政金融政策研究中心

本文利用中国上市公司的数据实证考察了董事会独立性与其他公司治理机制的交互效应对改善企业绩效(公司治理)的作用,在此基础上对中国资本市场推出的独立董事制度的政策效果进行评估。研究结果显示,董事会独立性与大股东监督、管理层薪... 详细信息

本文利用中国上市公司的数据实证考察了董事会独立性与其他公司治理机制的交互效应对改善企业绩效(公司治理)的作用,在此基础上对中国资本市场推出的独立董事制度的政策效果进行评估。研究结果显示,董事会独立性与大股东监督、管理层薪酬激励等治理机制的治理效果互相加强(互补),而与法律对投资者权力的保护和股权制衡等治理机制则存在替代关系。因而,中国资本市场独立董事制度的推行将改善大股东监督和管理层薪酬激励的治理效果,但在一定程度上将削弱法律环境改善与股权制衡的治理效果。董事会独立性加强对董事会的领导结构的治理效果则并无显著影响。不同于以往的研究结论,本文的研究表明,对于中国资本市场而言,董事会独立性的公司治理效应不是以直接,而是通过与其他治理机制的交互影响而间接发挥公司治理作用的。因而,本研究对于合理评估中国资本市场推出的独立董事制度的政策效果和未来的改进和完善具有重要的政策涵义。

关键词：董事会独立性公司治理交互效应独立董事制度政策效果评估

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无陷门格基签密方案

电子与信息学报 2016年第9期38卷 2287-2293页

作者：路秀华温巧燕王励成杜蛟廊坊师范学院数学与信息科学学院廊坊065000 北京邮电大学网络与交换技术国家重点实验室北京100876 北京邮电大学信息安全中心北京100876 河南师范大学数学与信息科学学院新乡453007

现有的格基签密方案以陷门产生算法和原像取样算法为核心算法。但是,这两个算法都很复杂,运算量较大,严重影响格基签密方案的执行效率。该文运用无陷门格基签名及其签名压缩技术,结合基于带错学习问题的加密方法,提出第1个基于格理论的... 详细信息

现有的格基签密方案以陷门产生算法和原像取样算法为核心算法。但是,这两个算法都很复杂,运算量较大,严重影响格基签密方案的执行效率。该文运用无陷门格基签名及其签名压缩技术,结合基于带错学习问题的加密方法,提出第1个基于格理论的、不依赖于陷门产生算法和原像取样算法的签密方案。方案在带错学习问题和小整数解问题的难解性假设下,达到了自适应选择密文攻击下的不可区分性和自适应选择消息攻击下的不可伪造性。方案在抗量子攻击的同时,保证了较高的执行效率。

关键词：基于格的密码学签密无陷门格基签名带错学习问题小整数解问题

艾愈胶囊用于老年晚期非小细胞肺癌化疗患者的临床观察

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中药药理与临床 2016年第4期32卷 123-125页

作者：卢秀花杜瑞超杨波临沂市沂水中心医院药学部临沂276400 临沂市沂水中心医院肿瘤内科临沂276400

目的:观察艾愈胶囊对晚期老年非小细胞肺癌化疗患者的减毒作用,检测其对老年患者T淋巴细胞及NK细胞的影响。方法:选取2014.1~2015.12我院肿瘤科首次诊断非小细胞肺癌住院治疗的老年患者56例,随机分为对照组(28例)和观察组(28例),对照组... 详细信息

目的:观察艾愈胶囊对晚期老年非小细胞肺癌化疗患者的减毒作用,检测其对老年患者T淋巴细胞及NK细胞的影响。方法:选取2014.1~2015.12我院肿瘤科首次诊断非小细胞肺癌住院治疗的老年患者56例,随机分为对照组(28例)和观察组(28例),对照组按照指南给予化疗药物(吉西他滨加顺铂方案)治疗,观察组在对照组的基础上加服艾愈胶囊,3周为一周期。两周期后,根据患者卡氏评分和化疗毒副反应(消化道反应、肝肾功、血常规)评价艾愈胶囊的减毒作用。抽取治疗前(d1)和治疗两周期(d42)后患者清晨空腹静脉血,运用流式细胞仪检测T淋巴细胞亚群CD3^+、CD4^+、CD8^+、CD4^+/CD8^+水平及NK细胞比例,评价艾愈胶囊的免疫调节作用。结果:治疗后,两组患者卡氏评分均明显提高;与对照组比较,观察组化疗毒副作用发生率明显下降;治疗后,与对照组比较,观察组患者CD8^+水平明显下降,CD3^+、CD4^+、CD4^+/CD8^+水平明显上升;NK细胞水平明显升高。结论:艾愈胶囊治疗能改善老年非小细胞肺癌患者主要临床症状,提高患者生活质量,减轻化疗相关毒副作用,还能纠正淋巴细胞亚群的紊乱,调节T淋巴细胞亚群比例,升高NK细胞比值。

关键词：艾愈胶囊非小细胞肺癌 T淋巴细胞亚群 NK