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141.
142.
Jia Mo Zhaofeng Ma Yixian Yang Xinxin Niu 《International Journal of Theoretical Physics》2013,52(11):3813-3819
This paper presents a Bell-dual-basis-based quantum watermarking protocol composed of three major algorithms: watermark embedding and extracting and the intercepting test. The first two are completed by using the entanglement swapping property of Bell dual basis and the test is accomplished through IBF protocol to guarantee its bottom security. The watermarking protocol is mainly designed for the protection of digital copyright in the existence of classical information. This design finds that the quality of digital contents is not damaged with its zero-watermark attributes when embedding watermarks. 相似文献
143.
Rigui Zhou Huian Wang Qian Wu Yang Shi 《International Journal of Theoretical Physics》2012,51(3):705-723
Based on analysis on properties of quantum linear superposition, to overcome the complexity of existing quantum associative
memory which was proposed by Ventura, a new storage method for multiply patterns is proposed in this paper by constructing
the quantum array with the binary decision diagrams. Also, the adoption of the nonlinear search algorithm increases the pattern
recalling speed of this model which has multiply patterns to O( log22n -t ) = O( n - t )O( {\log_{2}}^{2^{n -t}} ) = O( n - t ) time complexity, where n is the number of quantum bit and t is the quantum information of the t quantum bit. Results of case analysis show that the associative neural network model proposed in this paper based on quantum
learning is much better and optimized than other researchers’ counterparts both in terms of avoiding the additional qubits
or extraordinary initial operators, storing pattern and improving the recalling speed. 相似文献
144.
《中国化学快报》2021,32(8):2359-2368
The photoisomerization properties of azo derivatives have been widely used in the fields of materials and biology.One serious restriction to the development of functional azo-based materials is the necessity to trigger switching by UV light,which damage the corresponding surfaces and penetrate only partially through the matter.Therefore,developing the visible and near-infrared light activated azo switches can solve this problem.This review provides a summary of molecular design strategies for driving the isomerization of azo derivatives with visible light and near-infrared light:(1) smart design directly excited by visible light,(2) the addition of upconversion nanoparticles,(3) the employment of twophoton absorption,(4) indirect excitation in combination with metal sensitizer. 相似文献
145.
In this paper, a generalized strong vector quasi-equilibrium problem with set-valued mapping and domination structure is presented, and under the condition of cone-continuity, existence of solutions and the compactness of solution set are established. As applications, existence of solutions for strong vector F-implicit variational inequality problem and strong vector F-implicit complementarity problem is derived, and Khan’s main results are corrected. 相似文献
146.
詹棠森 《数学的实践与认识》2012,42(22):156-159
通过倒差商-连分式算法,提出了一种保端点非线性有理参数化拟合算法,通过选取中间点的参数化,利用连分式插值法,得到的拟合函数具有保端点性,规律性和灵活性.实例表明,算法减少了连分式插值迭代次数,避免插值连分式的不存在性,所得到拟合值具有更好的精度,大大提高了计算效率,拟合的误差更具有平稳性,逼近效果更好,并具有较好的预测等方面的应用. 相似文献
147.
A solvent extraction process is proposed to recover uranium and thorium from the crystal waste solutions of zirconium oxychloride.
The extraction of iron from hydrochloride medium with P350, the extraction of uranium from hydrochloride with N235, and the
extraction of thorium from the mixture solutions of nitric acid and the hydrochloric acid with P350 was investigated. The
optimum extraction conditions were evaluated with synthetic solutions by studying the parameters of extractant concentration
and acidity. The optimum separation conditions for Fe (III) are recognized as 30% P350 and 4.5 to 6.0 M HCl. The optimum extraction
conditions for U (VI) are recognized as 25% N235 and 4.5 to 6.0 M HCl. And the optimum extraction conditions for Th (VI) are
recognized as 30% P350 and 2.5 to 3.5 M HNO3 in the mixture solutions. The recovery of uranium and thorium from the crystal waste solutions of zirconium oxychloride was
investigated also. The results indicate that the recoveries of uranium and thorium are 92 and 86%, respectively. 相似文献
148.
Xiaochun Zhou Xiaojun Wang 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2012,86(13):2033-2036
A modified low temperature solid state process has been proposed to systematically synthesize europium-doped yttrium phosphate-vanadates with general formula Y0.48Li1.5V1 ? x P x O4:Eu3+ (x = 0.2, 0.4, 0.6). All the Y0.48Li1.5V1 ? x P x O4:Eu3+ products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The excitation and emission spectra were measured at room temperature. Y0.48Li1.5V1 ? x P x O4:Eu3+ show the characteristic missions of Eu3+ (5 D 0?7 F 1, 2, 3, 4 transitions dominated by 5 D 0?7 F 2), intensities of the products were sensitive to the x value, and the x value had an obvious influence on the (5 D 0?7 F 2)/(5 D)0?7 F 1) intensity ratio of Eu3+. In addition, incorporation of Li+ ions in the phosphors reduce the amount of Y2O3, lower the cost of production, and cause a new phase Li3VO4. 相似文献
149.
150.
In this short note, we prove that a complete lattice is a generalized completely distributive lattice if and only if its order dual is a hypercontinuous lattice. 相似文献