摘要：
The cryptographic algorithm MIBS was proposed in CANS 2009.It is a lightweight cryptographic algorithm which is currently suitable for the implementation such as RFID Smart Card of the IoT.It is studied to achieve the hardware area optimal implementation of encryption algorithm MIBS.Firstly,the same round operation is implemented only once.Secondly,Permutation byte is only necessary to change the order,so we can do one of the Mixlayer and Permutation.Thirdly,updateKey and SubCell are required in S-box.The two modules are not encapsulated.It can be achieved through assign functions.It is called in S-boxes at the same time in MIBSRound,this can save register.We use the assign functions so that the MIBS encryption is completed only requiring 32 clock cycles.Experimental results show that the area of optimized MIBS is less than original MIBS on FPGA.Encryption rate of optimal MIBS is 194.982 Mbps.To our knowledge,this is the first issue about implementation of MIBS algorithm on FPGA which can provide reference for the further application of IOT encryption.
摘要：
In high-power laser system such as Petawatt lasers, the laser beam can be intense enough to result in saturation of nonlinear refraction index of medium. Based on the standard linearization method of small-scale self-focusing and the split-step Fourier numerical calculation method, we present analytical and simulative investigations on the hot-image formation in cascaded saturable nonlinear medium slabs, to disclose the effect of nonlinearity saturation on the distribution and intensity of hot images. The analytical and simulative results are found in good agreement. It is shown that, saturable nonlinearity does not change the distribution of hot images, while may greatly affect the intensity of hot images, i.e., for a given saturation light intensity, with the intensity of the incident laser beam, the intensity of hot images firstly increases monotonously and eventually reaches a saturation; for the incident laser beam of a given intensity, with the saturation light intensity lowering, the intensity of hot images decreases rapidly, even resulting in a few hot images too weak to be visible.
关键词：
Geometric phase gradient;Spin Hall effect of light;Metamaterial
摘要：
The spin Hall effect (SHE) of light originates from the spin-orbit interaction, which can be explained in terms of two geometric phases: the Rytov-Vladimirskii-Berry phase and the Pancharatnam-Berry phase. Here we present a unified theoretical description of the SHE based on the two types of geometric phase gradients, and observe experimentally the SHE in structured dielectric metasurfaces induced by the PB phase. Unlike the weak real-space spin-Hall shift induced by the SRB phase occurring at interfacial reflection/refraction, the observed SHE occurs in momentum space is large enough to be measured directly.
摘要：
Non-dominated sorting multi-objective optimization algorithms can constantly lead to the population of Pareto front optimal. However, the non-dominated sorting strategy lacks high capability to explore the Pareto front in the evolutionary subsequent process. We introduce a mixed strategy game model into evolutionary algorithms in this paper. Based on this strategy, we propose a novel multi-objective evolutionary algorithm (MSG-MOEA). A player adopts a strategy against the rest of the players with a certain probability in their respective strategy space instead of some specific strategy. According to the results of the game earning, the player constantly updates this probability to maximize the interest of his own objective. Through the players' constant pursuit of the maximal interest, a kind of tension could be brought to the population, which would push forward the population to the Pareto front. The proposed approach has been used some test functions and metrics for validation which are taken from the standard multi-objective optimization evolutionary literature. The experiment results have been compared against the NSGAII algorithm, which is one of the most highly competitive EMO algorithms. Algorithm analysis and simulation results show that the proposed algorithm performs well in solving complex multi-objective optimization problems.
作者机构：
[Yi Zheng-ji] Hengyang Normal Univ, Coll Hunan Prov, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.;[Chen Hui-lun; Yi Zheng-ji; Yao Jun; Zhu Mi-jia] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.;[Chen Hui-lun; Yi Zheng-ji; Yao Jun; Zhu Mi-jia] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.
会议名称：
International Conference on Material, Energy and Environment Engineering (ICM3E)
会议时间：
JAN 30-31, 2016
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Yi Zheng-ji] Hengyang Normal Univ, Coll Hunan Prov, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.^[Yi Zheng-ji;Yao Jun;Zhu Mi-jia;Chen Hui-lun] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.^[Yi Zheng-ji;Yao Jun;Zhu Mi-jia;Chen Hui-lun] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.
摘要：
Biological reduction of uranyl by Desulfovibrio desulfurican has been considered as a promising pathway for removing U(VI) from groundwater. In this paper, anaerobic batch tests were conducted to explore the effect of two ubiquitous ferric (hydr) oxides, hematite and goethite, on the bioreduction of U(VI) by D. desulfurican. When hematite or goethite (containing solidoid Fe(III) ranging from 10 to 30 mmol/L) was coexistent, U(VI) bioreduction could always be inhibited and the inhibitory effect was increased with increasing content of ferric (hydr) oxide. In the presence of a mixture of hematite and goethite with the total solidoid Fe(III) kept constant at 20 mmol/L, the inhibitory effect on U(VI) reduction by the minerals were directly correlated with the fraction of hematite. Moreover, a gradual increase in U(VI) concentration could be observed in all ferric (hydr) oxide treatments after ten days, accompanied by the release of ferrous ion into the solution. In summary, the presence of ferric (hydr) oxide can lead to the eventual incomplete U(VI) bioreduction.
摘要：
In high-power laser system such as Petawatt lasers, the laser beam can be intense enough to result in saturation of nonlinear refraction index of medium. We present an analytical and simulative investigation of hot image formation in an intense laser beam through a saturable nonlinear medium slab based on Fresnel-Kirchhoff diffraction integral and the standard split-step Fourier method. The analytical results are found in agreement with the simulative ones. It is shown that, hot images can still form in an intense laser beam through a saturable nonlinear medium slab, additionally, the saturable nonlinearity does not change the location of hot images, while may decrease the intensity of hot images, i.e., the intensity of hot images decreases with the saturation light intensity lowering, and can stop to increase with the intensity of the incident laser beam heightening due to saturation of nonlinearity. Moreover, variations of intensity of hot images with the obscuration type and the slab thickness are discussed.
