An improved SVD-based watermarking technique for copyright protection

The drawbacks of SVD-based image watermarking are false positive, robust and transparency. The former can be overcome by embedding the principal components of the watermark into the host image, the latter is dependent on how much the quantity (i.e., scaling factor) of the principal components is embedded. For the existing methods, the scaling factor is a fixed value; actually, it is image-dependent. Different watermarks need the different scaling factors, although they are embedded in the same host image. In this paper, two methods are proposed to improve the reliability and robustness. To improve the reliability, for the first method, the principal components of the watermark are embedded into the host image in discrete cosine transform (DCT); and for the second method, those are embedded into the host image in discrete wavelets transform (DWT). To improve the robustness, the particle swarm optimization (PSO) is used for finding the suitable scaling factors. The experimental results demonstrate that the performance of the proposed methods outperforms than those of the existing methods.     

关于第二积分中值定理渐近性的一个注记

对于第二积分中值定理中的搴，本文给出并证明了比文献[3]更一般的结论，文献[3]的有关定理可以看成本文定理的直接推论．     

基于顾客价值的物流服务传递系统设计

物流服务传递过程设计对物流服务运营管理的具体实施、控制和改进有着重要的影响。从物流服务产品的特点出发，运用服务营销理念，研究了在竞争环境下，物流服务企业应该如何设计出流畅、高效的服务传递系统，从而保证为客户提供优质的、让客户满意的物流服务。物流服务传递系统的设计建立在完整物流服务产品设计的基础之上，设计的基本过程基于各级“内部顾客”结构，分为前台和后台设计。     

点到平面距离公式的一种新证法

该文根据球面上一点切平面的方程和平移变换,对空间任一点P(x0,y0,z0),分P点为坐标原点和P点不是坐标原点两种情形,给出了到平面π:Ax By Cz D=0的距离公式d=|Ax0 By0 Cz0 D|/√A2 B2 C2 的一种新证法.     

Quantum analysis of measurement results

It is shown that a stochastic matrix operator (quantum measurement matrix) may be considered in some cases as a density matrix. Results of measurements in the form of figure numbers, interconnected with a matrix of quantum measurements, are similar to quantum observable quantities determined in quantum statistical theory. __________ Translated from Izmeritel’naya Tekhnika, No. 12, pp. 3–8, December, 2006.     

说话人识别中LPCCEP倒谱分量的相对重要性

文中研究表明,反映说话人特征信息的特征参数矢量的各个分量通常具有不同的分布,对正确识别说话人身份的有效性是有差别的。文中通过增减分量的方法对LPCCEP的各维分量进行分析,得到一个关于LPCCEP参数各维分量的平均贡献序列,将此序列运用于WDMVQ有助于系统识别率的提高。     

A Critical Analysis of the Quality Concept and the Scope for Quantitative Estimation

Conditions are derived providing objective values for quantitative indices. It is shown that these conditions cannot be realized for the quality of a material object and consequently quality cannot have an objective quantitative value. __________ Translated from Izmeritel'naya Tekhnika, No. 10, pp. 24–27, October, 2005.     

二阶柯西中值定理中间点的渐近性质

对二阶柯西中值定理中间点的渐近性质进行了研究，得到的主要结果是limx→αξ-α/x-α=1/2m√2^m 2-2/(m 2)(m 1).     

提高顾客价值意识增强企业竞争优势

顾客价值是企业取得竞争优势的一个有利法宝.本文作者以价值工程原理为基础,着重从控制产品质量,提供顾客所需功能;提升品牌优势;实施客户关系管理等三个方面进行论述了如何提高顾客价值,增强企业竞争优势.     

恒速成长公司股票投资价值的经济弹性分析

对恒速成长公司股票的投资价值进行了弹性分析。结果表明,恒速成长公司投资价值的利率与业绩弹性既敏感地依赖于公司的成长速度和利率水平等内外部因素,也是刻画股票某种投机价值的恰当指标。