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The Construction of"New Woman" in Chen Hengzhe's Autobiography
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作者 Tieniu Cheng 《Journal of Literature and Art Studies》 2013年第12期739-756,共18页
This essay examines the autobiography of Chen Hengzhe (1890-1976) (see Appendix), a relatively less studied woman writer, historian, and critic in modem China. Through the study in four aspects, namely, the pursui... This essay examines the autobiography of Chen Hengzhe (1890-1976) (see Appendix), a relatively less studied woman writer, historian, and critic in modem China. Through the study in four aspects, namely, the pursuit of modem education, simple appearance, great leaders, and the ambassadors of culture, the author's research indicates that Chen's construction of"new woman" has been influenced by complex historical and cultural forces such as the Chinese traditional culture, Western culture, and the iconoclastic spirit of "the New Culture Movement". Meanwhile, Chen's gender consciousness is also an important element. Moreover, Chen's pioneering standing and her own experiences of studying abroad makes her take the lead in conceiving women's leadership and their roles in global culture communications. In the late Qing and the early Republic, traditional values and norms of womanhood were severely challenged. Chen's construction of"new woman" is her conscious effort to define a new womanhood and is an integral part of the ongoing exploration of Chinese women for modem womanhood. Through the examination of Chen's "new woman", this paper seeks to enrich our understanding of the complexity of modem Chinese women's exploration of modem womanhood. 展开更多
关键词 new woman culture and politics modem China womanhood AUTOBIOGRAPHY chen hengzhe
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Realistic Writing,Rational Contemplation,and Desire for Enlightenment—On Chen Hengzhe’s Novel Creation
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作者 DONG Huichuan DU Xueying 《Cultural and Religious Studies》 2022年第10期585-590,共6页
Chen Hengzhe is one of the earliest novelists at the beginning of new literature.Her novels depict the tragic real life with a serious and profound realistic tone and meditate on the emotional problems of life with th... Chen Hengzhe is one of the earliest novelists at the beginning of new literature.Her novels depict the tragic real life with a serious and profound realistic tone and meditate on the emotional problems of life with the unique perspective and delicate psychology of women.Her novels,with the sincerest feelings and pure thoughts,show her desire for individual enlightenment and group enlightenment by means of fairy tales and fables. 展开更多
关键词 chen hengzhe novel realistic writing rational meditation desire for enlightenment
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CIIS President Chen Bo Leads a Delegation to Visit India
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《China International Studies》 2025年第3期F0003-F0003,共1页
From May 20 to 24,2025,CIIS President Chen Bo led a delegation to visit India.During the visit,the delegation attended the 20th meeting of the Shanghai Cooperation Organization(SCO)Forum hosted by the Indian Council o... From May 20 to 24,2025,CIIS President Chen Bo led a delegation to visit India.During the visit,the delegation attended the 20th meeting of the Shanghai Cooperation Organization(SCO)Forum hosted by the Indian Council of World Affairs(ICWA)and had in-depth exchanges with all participants on topics such as security,sustainable development and cultural cooperation in the SCO region.The delegation also had meetings with the Vivekananda International Foundation(VIF)and the Institute of Chinese Studies(ICS)in India. 展开更多
关键词 Shanghai Cooperation Organization CIIS SCO Forum chen Bo INDIA Security Institute Chinese Studies Vivekananda International Foundation
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Chen Hailin Huasheng Textile Group: Weaving a brighter future with technology
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作者 Ju Xinyu Zhong Mengxia 《China Textile》 2025年第4期6-8,共3页
Within the Huasheng Textile Industrial Park in Wudi Economic Development Zone,Binzhou,Shandong,a impressive figure over 1.8 meters tall shuttles back and forth between home and production workshop.Chen Hailin,Chairman... Within the Huasheng Textile Industrial Park in Wudi Economic Development Zone,Binzhou,Shandong,a impressive figure over 1.8 meters tall shuttles back and forth between home and production workshop.Chen Hailin,Chairman of Shandong Huasheng Textile Group Co.,Ltd.and leader of Hong Kong Huasheng Group,has the boots-on-the-ground confidence when discussing technological breakthroughs. 展开更多
关键词 Huasheng Textile Group chen Hailin Wudi Economic Development Zone technological breakthroughs TECHNOLOGY SHANDONG Binzhou
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Antithrombotic effect in zebrafish of a fibrinolytic protein EPF3 from Dilong(Pheretima vulgaris Chen)and its transport mechanism in Caco-2 monolayer through cell bypass pathway
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作者 Wan-ling Zhong Jian-qiong Yang +4 位作者 Hai Liu Ya-li Wu Hui-juan Shen Peng-yue Li Shou-ying Du 《Journal of Integrative Medicine》 2025年第4期415-428,共14页
Objective:EPF3 is a fibrinolysin monomer isolated and purified from Pheretima vulgaris Chen,an earthworm used in traditional Chinese medicine as Dilong for treating blood stasis syndrome.Its composition,anticoagulant ... Objective:EPF3 is a fibrinolysin monomer isolated and purified from Pheretima vulgaris Chen,an earthworm used in traditional Chinese medicine as Dilong for treating blood stasis syndrome.Its composition,anticoagulant and fibrinolytic activities,and relevant mechanisms have been confirmed through in vitro experiments.However,whether it has antithrombotic effects in vivo and can be absorbed by the gastrointestinal tract is unknown.This study evaluates the antithrombotic effect in zebrafish and investigates the gastrointestinal stability and intestinal absorption mechanism of this protein in vitro.Methods:The antithrombotic effect of EPF3 in vivo was verified using the zebrafish thrombus model induced by arachidonic acid and FeCl3.Then,the protein bands of EPF3 incubated with simulated gastric fluid(SGF),simulated intestinal fluid(SIF),and homogenate of Caco-2 cells(HC2C)were analyzed by sodium dodecyl sulfate–polyacrylamide gel electrophoresis to evaluate its gastrointestinal stability.Finally,the transport behavior and absorption mechanism of EPF3 were studied using Caco-2 cell monolayer.Results:EPF3 could significantly enhance the returned blood volume and blood flow velocity in zebrafish with platelet aggregation thrombus induced by arachidonic acid.It could also prolong the formation time of tail artery thrombus and increase the blood flow velocity in zebrafish with vessel injury thrombus induced by FeCl3.EPF3 was stable in SIF and HC2C and unstable in SGF.The permeability of EPF3 in Caco-2 monolayer was time-dependent and concentration-dependent.The efflux ratio was less than1.2 during transport,and the transport behavior was not affected by inhibitors.EPF3 could reversibly reduce the expression of tight junction-related proteins,including zonula occludens-1,occludin,and claudin-1 in Caco-2 cells.Conclusion:EPF3 could play a thrombolytic and antithrombotic role in zebrafish.It could be transported and absorbed into the intestine through cellular bypass pathway by opening the intestinal epithelium tight junction.This study provides a scientific explanation for the antithrombotic effect of earthworm and provides a basis for the feasibility of subsequent development of EPF3 as an antithrombotic enteric-soluble preparation.Please cite this article as:Zhong WL,Yang JQ,Liu H,Wu YL,Shen HJ,Li PY,Du SY.Antithrombotic effect in zebrafish of a fibrinolytic protein EPF3 from Dilong(Pheretima vulgaris Chen)and its transport mechanism in Caco-2 monolayer through cell bypass pathway.J Integr Med.2025;23(4):415–428. 展开更多
关键词 Pheretima vulgaris chen Antithrombotic effect Intestinal absorption mechanism Caco-2 cell monolayer Fibrinolytic protein
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Retrospective analysis on Lou Bei Er Chen decoction and acupuncture in gastroesophageal reflux disease post-gastric cancer surgery
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作者 Jing-Hua Shi Hui Yang +4 位作者 Shi-Tao Wang Wen-Jun Wang Ye Shi Shan-Shan Huang Su Jiang 《World Journal of Gastrointestinal Surgery》 2025年第3期171-179,共9页
BACKGROUND Gastric cancer is a growing clinical challenge,particularly due to the increased risk of postoperative gastroesophageal reflux disease(GERD)following surgical treatment.traditional Chinese medicine(TCM),inc... BACKGROUND Gastric cancer is a growing clinical challenge,particularly due to the increased risk of postoperative gastroesophageal reflux disease(GERD)following surgical treatment.traditional Chinese medicine(TCM),including acupuncture and herbal medicine,has been proposed as an adjunctive therapy to promote gastrointestinal recovery and alleviate GERD symptoms.AIM To retrospectively study the clinical efficacy of modified Lou Bei Er Chen decoction combined with acupuncture in treating patients with GERD after radical gastrectomy due to gastric cancer.METHODS A retrospective study was conducted,including patients with gastric cancer or malignant tumors of the stomach from January 2019 to December 2023 in the Affiliated Taizhou People’s Hospital of Nanjing Medical University.Patients with a TCM diagnosis of qi depression and phlegm obstruction(n=128)were selected on the basis of prescription and treatment principles.They were then divided into a control group(n=61)and an observation group(n=67).The control group received treatment with Western medicine domperidone.The observation group were treated with Lou Bei Er Chen decoction orally,with acupuncture at specific RESULTS The observation group showed significantly shorter times for first flatus,defecation,bowel sound recovery,and initiation of nasogastric enteral nutrition than the control group(P<0.05).Upon treatment,the two groups demonstrated a significant reduction in gastrointestinal dysfunction scores,with a more significant reduction in the observation group(P<0.001).The GERD-Q scores significantly decreased after 8 weeks of treatment in the two groups(P<0.05),with a significant reduction in the observation group(P<0.05),compared with baseline.The TCM syndrome scores significantly decreased after 4 and 8 weeks of treatment in the two groups(P<0.05),with a significant reduction in the observation group(P<0.05).The effective rate of the observation group after 8 weeks of treatment was significantly higher than that after 4 weeks(χ2=13.648,P=0.003),and it was significantly higher than that of control group(χ2=13.879,P=0.003).CONCLUSION Lou Bei Er Chen decoction combined with acupuncture treatment can effectively alleviate clinical symptoms in patients GERD after gastric cancer surgery and improve their life quality.It is worthy of further promotion and application. 展开更多
关键词 Lou Bei Er chen decoction ACUPUNCTURE Gastric cancer Gastroesophageal reflux disease Gastrointestinal function
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Harmony Through Artistry Singaporean artist Edmund Chen reflects on strengthening China-Singapore cultural ties through cultural understanding and artistic exchange
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作者 Huang Jiangqin Chen Xiaoran 《China Report ASEAN》 2025年第10期54-54,共1页
Iince rising to fame in 1987 on the television drama Sunshine After Rain,Singaporean artist Edmund Chen has starred in many films and TV series.He has also been active in theatre,hosting programs,and-more recently-pub... Iince rising to fame in 1987 on the television drama Sunshine After Rain,Singaporean artist Edmund Chen has starred in many films and TV series.He has also been active in theatre,hosting programs,and-more recently-publishing.Chen has authored 15 picture books and two art activity books for children,earning recognition as Southeast Asia’s Best Emerging Children’s Author.Today,he remains a prominent figure in public,not just as an actor but also as a writer and illustrator. 展开更多
关键词 Singaporean artist picture books China Singapore relations art activity books artistic exchange Edmund chen films tv serieshe cultural understanding
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基于RSA算法和Chen超混沌系统的数字图像加密研究
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作者 卢媛君 《哈尔滨师范大学自然科学学报》 CAS 2024年第3期56-62,共7页
将Chen超混沌系统与RSA加密体制相结合,提出了新的非对称图像加密方案.利用非对称加密体制RSA算法生成Chen超混沌系统的初始值参数,并迭代生成密钥流,实现图像信息的3次隐藏得到密文图像.为了实现明文像素点的信息扩散到整个密文图像中... 将Chen超混沌系统与RSA加密体制相结合,提出了新的非对称图像加密方案.利用非对称加密体制RSA算法生成Chen超混沌系统的初始值参数,并迭代生成密钥流,实现图像信息的3次隐藏得到密文图像.为了实现明文像素点的信息扩散到整个密文图像中,加取模扩散算法循环2次.结果表明,RSA算法和Chen超混沌系统的图像加密方案是有效的,而且具有较强的抗攻击性以及密钥敏感性.另外,该加密方案的安全性依赖于RSA算法,从而具有较高安全性. 展开更多
关键词 图像加密 RSA算法 chen超混沌系统 有效性
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改进自适应渐进 II 型删失下 Chen 分布的贝叶斯分析
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作者 张莉 《理论数学》 2024年第1期400-415,共16页
本文基于改进的自适应渐进 II 型删失,对 Chen 分布进行了贝叶斯分析。首先利用 EM 算法得 到了参数的极大似然估计。针对共轭和非共轭的四种信息先验,运用大方差和遗传算法确定了先 验的超参数。进而根据 Metropolis-Hastings 算法实... 本文基于改进的自适应渐进 II 型删失,对 Chen 分布进行了贝叶斯分析。首先利用 EM 算法得 到了参数的极大似然估计。针对共轭和非共轭的四种信息先验,运用大方差和遗传算法确定了先 验的超参数。进而根据 Metropolis-Hastings 算法实现了后验分布样本的抽取。最后,通过真实 数据集对不同先验下的贝叶斯估计性能进行比较并得出了相应的结论。 展开更多
关键词 改进的自适应渐进 II 型删失 chen 分布 EM 算法 共轭和非共轭的信息先验 大方差和遗传 算法 Metropolis-Hastings 算法 贝叶斯估计
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A Study on the Historical Facts of Fu Yunlong’s Reprint of the Japanese Manuscript of Xin Xiu Ben Cao
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作者 ZHANG Jingqiu 《Chinese Medicine and Culture》 2025年第2期99-110,共12页
Xin Xiu Ben Cao(《新修本草》Newly Revised Materia Medica)is China’s first national pharmacopoeia and holds significant importance in the history of Chinese herbal medicine.However,it was lost by the time of the North... Xin Xiu Ben Cao(《新修本草》Newly Revised Materia Medica)is China’s first national pharmacopoeia and holds significant importance in the history of Chinese herbal medicine.However,it was lost by the time of the Northern Song dynasty.Japanese envoys to the Tang dynasty brought this text back to Japan,where it was preserved in manuscript form at Ninna-ji Temple(仁和寺)in Kyoto,although it gradually fell into obscurity.In the 19th century,Japanese physicians and scholars such as the Fukui family(福井家),the Asai family(浅井家),the Kojima family(小岛家),and Kariya Ekisai(狩谷棭斋)discovered fragments of Xin Xiu Ben Cao,transcribed them,and gradually disseminated them.During his travels to Japan from 1888 to 1889,the Chinese envoy Fu Yunlong(傅云龙),along with Chen Ju(陈榘),acquired and published this text.The reproduced edition shows that the text consists of eleven volumes,eight of which were originally from the Kojima family’s collection.Volume 3 was transcribed by Kojima Naozane(小岛尚真)based on his father’s compiled edition.The Kojima family’s manuscripts were later acquired by Arai Masatake(新井政毅),the owner of the Arai Bunko(新井文库),and after his passing,they were dispersed among booksellers.The seals printed in the book reveal that the Qing Legation in Japan and Chinese literati who traveled to Japan jointly appreciated and studied this text.By comparing it with other scroll and album-format manuscripts,it becomes evident that the layout of this fragment differs from the scroll format but is closer to the album format. 展开更多
关键词 Xin Xiu Ben Cao《(新修本草》Newly Revised Materia Medica) Fu Yunlong(傅云龙) chen Ju(陈榘) Ninna-ji Temple(仁和寺)
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一种基于广义Chen's混沌系统的图像加密新算法 被引量:26
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作者 朱从旭 陈志刚 欧阳文卫 《中南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2006年第6期1142-1148,共7页
根据高维混沌系统具有更高安全性的特点,提出一种基于三维Chen s混沌系统的数字图像加密新算法,通过置乱图像像素的空间位置和改变像素值来混淆密文图像和明文图像之间的关系。利用Chen s混沌系统的二维序列置乱图像像素的空间位置;然后... 根据高维混沌系统具有更高安全性的特点,提出一种基于三维Chen s混沌系统的数字图像加密新算法,通过置乱图像像素的空间位置和改变像素值来混淆密文图像和明文图像之间的关系。利用Chen s混沌系统的二维序列置乱图像像素的空间位置;然后,由Chen s混沌系统输出的三维混沌序列得到适合灰度图像或真彩色图像加密的密钥序列,利用混沌密钥序列对置乱图像进行逐像素加密。研究结果表明,该算法具有良好的像素值混淆、扩散性能和较大抵抗强力攻击的密钥空间,加密图像像素值具有类随机均匀分布特性,且相邻像素值具有零相关特性,所提出的方案具有较高安全性。 展开更多
关键词 混沌 图像加密 chen’s混沌系统 混淆 扩散
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延迟首次投喂对南方鲇(Silurus meridionalis Chen)仔鱼身体含能量、体长及游泳能力的影响 被引量:22
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作者 张怡 曹振东 付世建 《生态学报》 CAS CSCD 北大核心 2007年第3期1161-1167,共7页
在(22.0±0.5)℃条件下,将人工孵化的南方鲇仔鱼分别于出膜后4、5、6、7天进行首次投喂(其中4d的为对照组),首次投喂前(出膜后4d)取样测量体长、体重、身体含能量作为初始值,于出膜后7d(延迟投喂实验)和21d(继续喂养实验)分别测定... 在(22.0±0.5)℃条件下,将人工孵化的南方鲇仔鱼分别于出膜后4、5、6、7天进行首次投喂(其中4d的为对照组),首次投喂前(出膜后4d)取样测量体长、体重、身体含能量作为初始值,于出膜后7d(延迟投喂实验)和21d(继续喂养实验)分别测定体长、体重、身体所含能量和临界游泳速度。结果显示:延迟投喂实验结束时各处理组的体重、身体含能量和体长随首次投喂时间的延迟均呈下降趋势,相对临界游泳速度随首次投喂时间的延迟表现为先提高后降低的趋势,绝对临界游泳速度在延迟投喂2d以内无显著差异;继续喂养实验结束时处理组各指标逐渐接近对照组水平,两种临界游泳速度表现为同步变化趋势;另外,体长特定生长率相对百分比(SGRL%)的变化幅度小于身体含能量特定生长率相对百分比(SGRE%)的变化幅度,而绝对临界游泳速度相对百分比(Ucrit%)的变化又小于体长特定生长率相对百分比的变化。结果表明:早期食物资源的短缺会导致南方鲇仔鱼体重、身体含能量产生明显变化,体长生长速度的变化则相对较小,而短期饥饿不会显著降低南方鲇仔鱼的游泳能力。 展开更多
关键词 延迟首次投喂 体长 身体含能量 临界游泳速度 仔鱼 南方鲇(Silurus MERIDIONALIS chen)
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Chen混沌系统的自适应控制和同步电路实验 被引量:9
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作者 张若洵 田钢 杨世平 《河北师范大学学报(自然科学版)》 CAS 北大核心 2007年第6期738-743,756,共7页
设计了控制电路易于接入的Chen混沌系统电路,并进行了仿真实验,观察到了Chen混沌系统的吸引子.在Chen系统参数未知情况下提出了新的自适应同步控制理论,设计了自适应控制器和自适应同步控制器电路,给定电路元件的取值.通过电路实验仿真... 设计了控制电路易于接入的Chen混沌系统电路,并进行了仿真实验,观察到了Chen混沌系统的吸引子.在Chen系统参数未知情况下提出了新的自适应同步控制理论,设计了自适应控制器和自适应同步控制器电路,给定电路元件的取值.通过电路实验仿真,证明了所设计控制器电路的有效性. 展开更多
关键词 chen混沌系统 混沌控制 自适应控制 自适应同步 电路实现
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用单一控制器自适应同步不确定Chen混沌系统 被引量:7
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作者 张若洵 栗苹 +1 位作者 田钢 杨世平 《河北师范大学学报(自然科学版)》 CAS 北大核心 2008年第1期39-41,共3页
基于Lyapunov稳定性原理,对参数不确定Chen混沌系统提出了一种采用单一控制器自适应同步控制的新方法,给出了自适应同步控制器和参数自适应率的解析表达式.同步控制器具有简单、稳健、易于实现等优点.数值模拟证实了该方法的有效性和可... 基于Lyapunov稳定性原理,对参数不确定Chen混沌系统提出了一种采用单一控制器自适应同步控制的新方法,给出了自适应同步控制器和参数自适应率的解析表达式.同步控制器具有简单、稳健、易于实现等优点.数值模拟证实了该方法的有效性和可行性. 展开更多
关键词 参数不确定混沌系统 chen混沌系统 混沌同步
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时滞Chen混沌系统的指数同步及在保密通信中的应用 被引量:16
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作者 谢英慧 孙增圻 《控制理论与应用》 EI CAS CSCD 北大核心 2010年第2期133-137,共5页
针对一类参数未知的时滞Chen混沌系统,研究了其指数同步问题.利用Lyapunov稳定理论设计了指数同步控制器和参数自适应律,基于线性矩阵不等式技术给出了其指数同步的充分条件.利用所提出的指数同步方法解决了保密通信问题,且更符合实际情... 针对一类参数未知的时滞Chen混沌系统,研究了其指数同步问题.利用Lyapunov稳定理论设计了指数同步控制器和参数自适应律,基于线性矩阵不等式技术给出了其指数同步的充分条件.利用所提出的指数同步方法解决了保密通信问题,且更符合实际情况.所设计的控制器是实用有效,易于实现.仿真示例验证了该方法的有效性. 展开更多
关键词 chen混沌系统 时滞 指数同步 未知参数 保密通信
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基于Chen系统的滚动轴承早期微弱故障检测方法研究 被引量:11
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作者 唐贵基 闫晓丽 王晓龙 《振动与冲击》 EI CSCD 北大核心 2020年第20期128-133,141,共7页
针对滚动轴承早期故障信号相对微弱,经常淹没在环境噪声中而不易识别和提取的问题。提出了一种基于Chen系统的滚动轴承早期微弱故障检测方法。研究了Chen系统的非线性动力学特性,发现参数和初值的微小变化都有可能引起吸引子形状的明显... 针对滚动轴承早期故障信号相对微弱,经常淹没在环境噪声中而不易识别和提取的问题。提出了一种基于Chen系统的滚动轴承早期微弱故障检测方法。研究了Chen系统的非线性动力学特性,发现参数和初值的微小变化都有可能引起吸引子形状的明显改变,因此可以用吸引子形状的改变表征系统的微小扰动的存在。设计了基于Chen振子的微弱故障检测系统,根据Chen系统的吸引子在参数变化过程中形状有可能发生阶跃变化的特殊性质,设计了一种基于混沌吸引子形状阶跃变化的阈值选取方法,不仅实现了阈值的自动选取,还能自动识别输入信号中待测成分是否存在。将基于Chen系统的微弱信号检测方法应用于滚动轴承早期微弱故障诊断中。仿真和实验表明,该方法能够有效识别滚动轴承早期微弱故障,具有实际应用价值。 展开更多
关键词 chen系统 滚动轴承 微弱故障检测 阈值
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超混沌Chen系统和Rsser系统的脉冲自适应异结构同步 被引量:4
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作者 李东 杜永霞 +1 位作者 邓良明 杨媛媛 《西南大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第9期59-67,共9页
基于脉冲微分方程的不变原理,研究了超混沌Chen系统和超混沌Rsser系统的异结构同步问题,设计了脉冲自适应控制器,得到了超混沌Chen系统和超混沌Rsser系统的脉冲自适应同步准则,运用数值仿真方法证实了所研究方法的可行性和有效性.... 基于脉冲微分方程的不变原理,研究了超混沌Chen系统和超混沌Rsser系统的异结构同步问题,设计了脉冲自适应控制器,得到了超混沌Chen系统和超混沌Rsser系统的脉冲自适应同步准则,运用数值仿真方法证实了所研究方法的可行性和有效性.实验进一步表明,脉冲自适应同步方法比自适应方法实现同步的时间要短. 展开更多
关键词 超混沌chen系统 超混沌Rōsser系统 自适应同步 脉冲同步 不变原理
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Chen混沌系统的滑模同步控制方法 被引量:4
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作者 刘超 王俊年 唐婷婷 《计算机工程》 CAS CSCD 北大核心 2011年第22期94-95,101,共3页
设计一种滑模控制器,用于实现2个相同Chen混沌系统的同步。根据主从Chen混沌系统满足Lyapunov稳定性理论的条件,设计滑模控制器,使用混沌掩盖的方法将其应用于保密通信中,以掩盖和无失真地恢复有用信号。实验结果表明,该方法具有较好的... 设计一种滑模控制器,用于实现2个相同Chen混沌系统的同步。根据主从Chen混沌系统满足Lyapunov稳定性理论的条件,设计滑模控制器,使用混沌掩盖的方法将其应用于保密通信中,以掩盖和无失真地恢复有用信号。实验结果表明,该方法具有较好的鲁棒性和较高的安全性。 展开更多
关键词 chen混沌系统 混沌同步 滑模控制器 LYAPUNOV函数
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Chen氏系统的标度化设计及其硬件实现 被引量:7
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作者 吕恩胜 张光锋 《计算机应用》 CSCD 北大核心 2013年第7期2083-2086,共4页
为了使混沌系统得到有效的利用,提出了一种基于Chen氏系统的标度化设计方法。对Chen氏系统进行比例变换和微分积分变换,并详细分析了标度化Chen氏系统的特性;以标度化系统为模型用普通电路模块搭建标度化Chen氏混沌电路;对标度化系统采... 为了使混沌系统得到有效的利用,提出了一种基于Chen氏系统的标度化设计方法。对Chen氏系统进行比例变换和微分积分变换,并详细分析了标度化Chen氏系统的特性;以标度化系统为模型用普通电路模块搭建标度化Chen氏混沌电路;对标度化系统采用单向单变量耦合替换法,实现驱动系统和响应系统的同步。理论分析与电路实验结果表明该方法可以直接应用于工业生产。 展开更多
关键词 chen氏系统 混沌系统 标度化 混沌电路 混沌同步
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基于Chen超混沌和DNA编码的图像加密算法 被引量:12
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作者 李志远 蒋爱平 沈彦琦 《黑龙江大学自然科学学报》 CAS 2020年第5期602-609,共8页
提出了一种基于Chen超混沌和DNA编码的图像加密算法。算法关键在于对Logistic映射进行迭代,得到伪随机序列,并将该序列转为二维矩阵;改变参数和初始值,再次迭代Logistic混沌系统,得到新的伪随机序列,并构造索引序列完成对原始图像的置... 提出了一种基于Chen超混沌和DNA编码的图像加密算法。算法关键在于对Logistic映射进行迭代,得到伪随机序列,并将该序列转为二维矩阵;改变参数和初始值,再次迭代Logistic混沌系统,得到新的伪随机序列,并构造索引序列完成对原始图像的置乱及扩散,使原始图像的位置及像素值均改变。再利用参数多、空间复杂的Chen超混沌,得到四条混沌序列即X、Y、Z和H。用X和Y序列的随机值控制DNA编码规则的选取,使编码具有随机性和不确定性,分别对转化的二维矩阵和扩散后的图像进行编码,得到DNA矩阵。对两矩阵进行DNA运算,运算方式由序列Z的随机值决定,最后根据序列H进行解码,解码和编码的规则不同,进一步加强了安全性,得到最终加密图像。加密方案在Matlab上进行仿真,通过对密钥空间、密钥敏感性、直方图、信息熵和像素相关性等进行安全性分析,可以看出本算法可获得较好的加密效果,不易被破解。 展开更多
关键词 chen超混沌 LOGISTIC混沌映射 DNA编码 图像加密
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