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Data embedding based on pixel value differencing and modulus function using indeterminate equation

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The Journal of china Universities of Posts and Telecommunications 2015年第1期22卷 95-100页

作者： Wang Zhao Zhang Jie Liao Xin wen qiaoyan School of science Beijing University of Posts and Telecommunications college of computer {2. and Electronic Engineering Hunan University State Key Laboratory of Networking and Switching technology Beijing University of Posts and Telecommunications

An effective data hiding method based on pixel value differencing （PVD） and modulus function （MF） PVD （MF-PVD） was proposed. MF-PVD method was derived by Wang et al in which the MF was employed to adjust the remainder of two pixels for data embedding and extraction. In the proposed method, a new remainder function in a more general form is defined by selecting proper parameters, in which an indeterminate equation is constructed and an optimal solution is applied to revise the pixels. This strategy leads to a significant image distortion reduction compared with the original method. The experiment reveals that, by preserving the original embedding capacity, the method provides better embedding efficiency than both MF-PVD and PVD methods.

关键词： pixel value differencing modulus function indeterminate equation data embedding

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关于教育中“主体间性”的一些认识

天津大学学报（社会科学版） 2004年第3期6卷 211-215页

作者：王延文王光明天津大学管理学院天津300072 南京师范大学教学与计算机科学学院南京210097

韦伯的理解社会学、加芬克尔的常人方法学、胡赛尔先验现象学和哈贝马斯交往行动理论均对科技理性予以批判,但在构筑他们各自的哲学、揭示社会现象与问题时,站在了不同的方法论立场上,导致对"主体间性"认识视角不尽一致。教育中的主体... 详细信息

韦伯的理解社会学、加芬克尔的常人方法学、胡赛尔先验现象学和哈贝马斯交往行动理论均对科技理性予以批判,但在构筑他们各自的哲学、揭示社会现象与问题时,站在了不同的方法论立场上,导致对"主体间性"认识视角不尽一致。教育中的主体间性是指主体与主体之间相互尊重,在法律、各项学校规章制度与道德规范下的相互理解的关系特征。在学校教育中,科学精神与主体间性应是相辅相承的。为了实现主体间性,要注意运用平等对话与交流及交往等教育方式,但这些教育方式并不能排斥其他教育方式。教育改革过程应树立"主体间性"意识。

关键词：主体间性科技理性交往对话理解交流

Controlling the key by choosing the detection bits in quantum cryptographic protocols

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science china(Information sciences) 2015年第11期58卷 200-210页

作者： LIU Bin GAO Fei HUANG Wei LI Dan wen qiaoyan State Key Laboratory of Networking and Switching technology Beijing University of Posts and Telecommunications college of computer {2. Chongqing University

Eavesdropping detection is an indispensable process of most quantum cryptographic protocols. By publishing and comparing part of the shared bits, called as detection bits, the participants can check whether there exists an eavesdropper. Generally, the detection bits are chosen randomly. Consequently, the secret bits, i.e., the rest bits, are also random. Then, what if the detection bits are chosen non-randomly? Can the participant who chooses the detection bits make the secret bits to be a predetermined string he expected?This paper focuses on the participants’ key control capability when they choose the detection bits selectively in two-party quantum communication protocols. Concretely, we analyze the participants’ key control capability in different situations of different proportions of the detection bits. And we prove that the participants can predetermine, with high probability, any part of the secret bits of which the length is smaller than that of the detection bits. The above result has various potential applications in quantum cryptographic ***, utilizing this non-random selection of the detection bits, one can realize the function of a deterministic quantum key distribution protocol through a random one if the number of the detection bits is not smaller than that of the secret bits. What is more, we find that quite a few quantum key agreement protocols cannot guarantee the fairness of the key in the sense that the participant who chooses the detection bits can control the key somewhat.

关键词： eavesdropping detection deterministic quantum key distribution quantum key agreement quantum information quantum cryptography

Construction and Count of 1-Resilient Rotation Symmetric Boolean Functions on pr Variables

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Chinese Journal of Electronics 2014年第4期23卷 816-820页

作者： DU Jiao PANG Shanqi wen qiaoyan LIAO Xin college of Mathematics and Information science Henan Normal University State Key Laboratory of Networking and Switching technology Beijing University of Posts and Telecommunications college of Information science and Engineering Hunan University

Construction and count of 1-resilient Rotation symmetric Boolean functions(RSBFs) on p r variables are demonstrated. It is proved that constructions of1-resilient RSBFs on p r variables are equivalent to solving an equation system. An accurate enumeration formula of all 1-resilient RSBFs on p r variables is also proposed. Some examples are given, and the exact numbers of 1-resilient RSBFs on 8 and 9 variables are obtained respectively.

关键词： Cryptography Rotation symmetric Support table Correlation-immune Resilient functions

3D Real-time Display for A Typical Construction Machinery

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3D Real-time Display for A Typical Construction Machinery

2.11 International Conference on Advanced Materials Engineering(ICAME 2.11)

作者： wen Gong 1 Zhong-Jian Yu 1 Tian-Liang Lin 2.1 Shanghai Institute of Special Equipment Inspection and Technical Research 2.college of Mechanical Engineering and Automation Huaqiao {2.

The hardware-in-the-loop simulation research on hydraulic excavator presents the performance of the entire machine,when the character of some components *** simulation has important significance to the controlling of the entire machine and manipulability *** 3D real-time simulation platform,based on DirectX SDK and VC++,is developed to realize the 3-D real-time kinematics simulation of the hydraulic *** result shows the well-designed platform is a good solution for the 3D real-time simulation visualization,data analysis of off-line simulation and remote monitoring.

关键词： kinematics models simulation DirectX

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基于DSP技术的电测与分析仪的研究

四川工业学院学报 2002年第2期21卷 39-40,48页

作者：徐月华文琪广东省机电职业技术学院机电科广东广州510515 四川工业学院科研处四川成都610039

介绍了一种基于DSP技术的多功能的电参量测试与分析仪 ,该系统具有精度高、实时性好。

关键词： DSP技术谐波 FFT算法同步采样

结合全局信息增强的医学领域命名实体识别研究

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电子科技大学学报 2024年第3期53卷 431-439页

作者：要媛媛付潇杨东瑛王洁宁郑文太原理工大学计算机科学与技术学院(大数据学院) 晋中030600 中国船舶集团有限公司综合技术经济研究院北京100081 长治医学院山西省智能数据辅助诊疗工程研究中心长治046000

中文医疗问诊文本中,由于口语化的不规则表达和专业术语的频繁出现,药物名称等实体难以被精准地识别出来。为了充分利用中文句子词间关系的重要作用,提出了一种用于增强全局信息的医学命名实体识别模型。模型利用注意力机制增强了词嵌... 详细信息

中文医疗问诊文本中,由于口语化的不规则表达和专业术语的频繁出现,药物名称等实体难以被精准地识别出来。为了充分利用中文句子词间关系的重要作用,提出了一种用于增强全局信息的医学命名实体识别模型。模型利用注意力机制增强了词嵌入表征,并在使用双向长短时记忆网络的序列处理能力获取上下文信息的基础上,同时从两个方面丰富了句子的全局信息表示。其一是根据句法关系获取词语之间额外依赖关系构建了图卷积网络层用于丰富词间的依赖;其二是构建了辅助任务用于预测词间句法依赖关系的类别。在中文医疗问诊数据集上的实验结果表明,模型具有很好的竞争力,F1值达到94.54%。与其他模型相比,在药物和症状等实体类别的识别上取得了明显提高。在微博公开数据集上的实验也表明,模型具有通用领域的应用价值。

关键词：注意力机制双向长短时记忆网络图卷积网络医疗问诊命名实体识别

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直线超声电机瞬态特性测试研究

微电机 2009年第9期42卷 73-76页

作者：王文婷张建瓴可欣荣魏德仙张铁民河北师范大学物理科学与信息工程学院石家庄050031 华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室广州510642

超声电机瞬态特性测试是实现其瞬态控制的基础。在超声电机的参数测试中引入虚拟现实技术,利用LabVIEW软件平台、高速数据采集卡和非接触式位移传感器等构建了一个针对直线型超声电机的瞬态测试系统。系统能够同时测量并绘制出超声电机... 详细信息

超声电机瞬态特性测试是实现其瞬态控制的基础。在超声电机的参数测试中引入虚拟现实技术,利用LabVIEW软件平台、高速数据采集卡和非接触式位移传感器等构建了一个针对直线型超声电机的瞬态测试系统。系统能够同时测量并绘制出超声电机运行过程中的位移、速度和加速度曲线,方便确定其响应时间,且具有实现简单、操作方便、易于扩展等特点。

关键词：超声电机 LabVIEW 瞬态特性测试

Face detection in color images using AdaBoost algorithm based on skin color information

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Face detection in color images using AdaBoost algorithm base...