The recent achievements in the photo-excitation and photo-dissociation dynamics research on the triatomic molecular ions (CS⁺₂, SO⁺₂, CO⁺₂) are reviewed. The parent ions with selected vibrational states are prepared via resonance-enhanced multiphoton ionization (REMPI) of neutral molecules by using an ionization laser, and then the photo-dissociation spectra (the depletion spectra of the parent ions and the enhanced spectra of fragment ions) are obtained by using another one or two dissociation lasers overlapped temporally and spatially with the ionization laser. Based on photo-dissociation spectra the photo-excitation and the photo-dissociation dynamics of CS⁺₂, SO⁺₂, CO⁺₂ are investigated.

Using linking theorem and analytic technique, we discuss the existence of nontrivial solutions for the following semilinear elliptic problem with Hardy-Sobolev critical exponents and weights - Δ u-μ u |x|² =λu+K(x) |u|^2*(s)-2u |x|^s , x∈Ω; u=0, x∈Ω, where Ω is an open bounded domain of R ^<em>N with smooth boundary Ω and 0∈Ω, N≥5, 0<s<2,0≤μ< N-2 2 ², λ>0, and K (x) is a bounded positive function on Ω.

This paper focuses on the variation in properties of the metal films under the conditions of uniaxial stretching. By employing the effective theories (i.e. Parallel, Maxwell, and Hashin-Shtrikman theories), cracks models are established to obtain the relation between effective electric-resistance and strain. The theoretical solutions are compared with the previous experimental results. It is shown that the Maxwell solution agrees well with the experimental results. Furthermore, the tensile strain energy method and the homogenous method could be used to estimate the effective Youngs modulus of films during the deformation, and the accuracies of the estimation are subsequently compared using the finite elements method. The results show that the homogenous method is better. Finally, the correlations of the effective electric-resistance with effective Youngs modulus and damage variable are established.

The inversion problem of the nonabsorbing spheroidal particle size distribution has been studied in this paper. For continuous extinction spectrum, a new transform relationship between size distribution and extinction coefficient is derived. For discrete extinction spectrum, a series representation of particle size distribution based on Gamma distribution function is given, in which the unknown expansion coefficients are determined by solving the corresponding constraints linear equations. The shortest wavelength required for the implementation of integral is proportional to the smallest inversible particle size in a given inversion accuracy. Numerical tests have shown that this analytic technique is stable and efficient and it can tolerate about 5% of noise-corruption in extinction spectrum.

High resolution instruments were used to investigate the atmospheric particles distribution characteristics and the impacts on visibility in urban Guangzhou during spring 2008. We found that the particle number density decreased while particle size was growing, along the mass concentration profile there existed two peaks at 0.7μm and 2.5μm, and the rainfall had great effects on scavenging of coarse particles. The rising concentration of those ranging from 0.5μm to 2.5μm was the important reason for the degraded visibility.

Regional disparity between coastal regions and inland areas expanded tremendously in China during the reform period. Manufacturing sectors continuously concentrated in the coastal regions which aggravated regional inequality. This paper focuses on the role of market accessibility from a NEG perspective and raises a theoretical hypothesis: regional differentiation of market potential is one of the important driving forces which induce unequal economic growth especially unequal manufacturing growth across regions in China during the reform period. A panel dataset from 1978 to 2006 was used to test this hypothesis. Market potential and industrial output are co-integrated. They have temporal concomitance since 1978. Panel model results indicate that market accessibility is statistically significant in explaining spatial inequality of manufacture. Therefore, market accessibility plays a positive role in stimulating growth of manufacturing sectors and its spatial inequality. In China, spatial differentiation in market potential is one of the vital reasons for regional inequality during the reform period.

We presented the relocated hypocenter parameters for 522 events of 864 earthquakes which occurred in the southwest Tienshan region. The double-difference (DD) relocating method was utilized to produce the pronounced relative event locations through adopting both the absolute and relative P-wave arrival times. The resolution of the relocated earthquake hypocenters was significantly increased. After the relocation, those formerly randomly-distributed earthquakes were clustered and aligned tending to the east-west and north-west directions. The revised hypocenter locations showed some relations with the known major active faults.

By using the theories of systemism, synergetics, and cybernetics, the coordination development mechanism of urban agglomerations system is analyzed and discussed in four aspects including objects of coordination, motive force of coordination, the active and passive factors of coordination, and effect of coordination. Effect of coordination consisting of synergic effect and cybernetic effect is put forward as a new theory viewpoint. The general coordination development relation model of urban agglomerations system is designed. On the basis of the real features of Chinese urban agglomerations, a remedial coordination model mainly for the developed urban agglomerations and a preventive coordination model mainly for the developing urban agglomerations are suggested.

Using the nonlinear finite element method, the influence of parallel and quincuncial layout styles on soil arching effect of double-row anti-slide piles has been studied. It is found that soil arching effect can occur at both the anterior pile and the posterior pile. The soil arching effect of anterior piles and posterior piles can occur easily and distinctly with the quincuncial layout style. It can also be found that the loading at anterior piles is remarkably heavier than that at posterior piles, which suggests that a more economic and reasonable design can be proposed for reducing the design strength of posterior piles.

In order to apply the covariance matrix algorithm to automatic target detection we present feature similarity and covariance matrix similarity. Feature similarity is the similarity of the target feature. Covariance matrix similarity integrates all the feature similarities. In addition, because features are different in validity and importance, we raise minimized feature similarity. Minimized feature similarity can be used to get rid of basically ineffective features. Experiments show that with this method one can effectively apply the covariance matrix algorithm to automatic target detection with high detection rate and low false alarm rate.

A novel fast video similarity search approach was proposed. Image characteristic code and video component were computed based on the statistics of video spatial-temporal distribution. Video similarity was measured by computing the number of video components. An efficient search method based on clustering index table was proposed for the requirement of scalable computing. The query test results from large video database show that the proposed video similarity search algorithm is efficient and effective.

The Doppler bandwidth of spotlight SAR is usually larger than the PRF of azimuth signal. To avoid azimuth spectral folding, the improved algorithm first carries out deramp processing, and then uses CS algorithm to achieve accurate focus. Before the range compression, the improved algorithm completes cubic and quartic phase compensation. The improved DCS algorithm can not only achieve fine focusing images, but also remove the dissymmetric phenomena in the range compressed signal. Based on the squint spotlight model, the detailed derivation of the improved algorithm was presented. Simulation results show that the improved algorithm can be used for high squint spotlight SAR imaging.

In this paper, we proposed a new JPEG universal steganalytic scheme. By analyzing JPEG quantization model and steganographic model in DCT domain and wavelet domain, the study shows difference of quantization noise and embedding noise. Features calculated from the characteristic functions of JPEG individual histograms and wavelet subbands histograms are used to discriminate them. We categorize JPEG images based on quality factor and train different SVM classifier for individual categories. Experiments show that our method has better performance than some exiting JPEG universal steganalytic methods.

In this paper, a novel authentication protocol based on CDMA and Hash function is presented. The new protocol can tackle with the problem of tag collisions and resist several possible attacks, including reply, tracking, blocking, proofing, and inner attacks. Both theory and analysis show that the new protocol, compared with other authentication protocols, improves the security of RFID systems effectively and does not increase the complexity of protocol.

The problem of power and energy consumption is becoming increasingly important in computer systems, and this paper discusses this problem in time-sharing operating systems. We first give a formula to compute the best energy-saving frequency, which is deduced using the best energy-saving condition defined based on our description of system performance and energy. Because of the discrete nature of system frequencies, an algorithm is then proposed to approximate the best energy-saving frequency. We have implemented the proposed approach as a frequency management module in Linux, and experimental results show its correctness, efficiency, and practicability with an extremely low overhead of less than 3.63%.

The double diffractive optical elements system is proposed to encrypt the simple three-dimensional object. The three-dimensional information encircled with rotary parabolic surface is chosen as the object and the double-phase keys are designed by the phase retrieval algorithm. The computer simulations verify the effectiveness of the proposed system, and reveal how the different constrain conditions and the iteration number influence the entire recovered quality of the three-dimensional information. It is worth to consider the trade-off between the algorithm consumption and the entire recovered quality based on the requirements in applications.

A new large size ensemble prediction system (EPS) is introduced in this paper. To minimize the forecast uncertainties for ENSO (El Ni o-Southern Oscillation) predictions, the EPS is firstly based on an intermediated coupled model (ICM), and then the ensemble Kalman filter (EnKF) data assimilation method is adopted to generate the initial ensemble conditions for the EPS through assimilating available oceanic observations. Meanwhile, a developed linear, first-order Markov stochastic model-error model is embedded in the EPS to represent the model uncertainties during the twelve-month ensemble forecast process. The prediction skill of the EPS is verified based on the (100-members) retrospective ensemble forecast experiment covering the period between November, 1992 and October, 2008 in both deterministic and probabilistic senses. This ensemble technique provides a successful method of extending the standard deterministic forecasts to the probabilistic domain. The verification results show that the prediction skill of the ensemble mean is better than that of one single deterministic forecast using the same ICM. For the probabilistic perspective, those ensemble forecasts have their ensembles following observational variations well, and provide additional information that could not be gleaned from a purely deterministic approach.