This paper mainly studies law of the iterated logarithm for the local time of multi-parameter stable processes. A lower bound of law of the iterated logarithm is established.

Properties and potential applications of weak measurement are investigated. First, a kind of positive operator-valued measurement is defined, and a sufficient condition is deduced for weak measurement from the view of linear normed space. Secondly, the applicability of weak measurement is discussed. It is shown that weak measurement is applicable not only to a set of identical quantum systems, but also to a single quantum system if any measurement operator can be selectively implemented. Finally, the effects of weak measurement on different quantum systems are studied. For a set of identical quantum systems, weak measurement affects states as a dephasing process. However, for a two-level single quantum system, it can be used to inhibit dephasing and to depolarization processes.

A novel amphiphilic rod-coil organometallic oligomer with o-ferrocenylcarbonyl benzoic acid (FcBA) as the hydrophobic short-rod and with methoxy poly (ethylene glycol) (mPEG) as the hydrophilic coil chain has been obtained and the self-assembly behavior of the obtained oligomer was investigated under different initial concentrations. It was found that besides spherical and vesicle assemblies, a new type of morphology, twisty wormlike shape, was formed in the process of self-assembly and the π-π interaction between ferrocene and benzene ring was discussed.

Information of phytolith, SOC, cultural layers, and ¹⁴C dating in two ancient profiles (0-200cm) was used to probe the history and causes of rice cropping(RC). The results showed the highest rice cropping intensity (RCI) at 100-116cm (Majiabang) and the lowest at 75-100cm (Majiabang-Liangzhu). Nutrients deficiency was not the reason for drastic fall of RCI, but the land use change induced by climate change was. The continuous raise of RCI appeared at 160-100cm (Majiabang), 100-42cm (Liangzhu-Maqiao), and 42-0cm (Song dynasty-now) intermittently.

The corn water requirement and irrigation forecast in semi-arid area in western Liaoning were studied by using CROPWAT model, based on corn growth parameters and agro-meteorological data from 2004 to 2008. The results indicate that the trend of corn water requirement was in a normal distribution in the growth period and the annual water demand was between 572 and 645mm. The water requirements in the seedling, jointing, tasselling, and filling stages were 11.1%, 30.2%, 19.8% and 38.9% of the total water requirement, respectively. The corn irrigation requirement curves were of the parabolic type, the medium-term platform type, and double-peak type. The supplementary irrigation was fulfilled mainly in July, August and September.

Tens of thousands of landslides were triggered by Wenchuan earthquake. The purpose of this study was to find correlations of landslide occurrence with formation lithology, slope gradient, elevation, peak ground acceleration, and distance from seismogenic fault in two selected landslide incidental areas(A/B), using spatial analysis methods. The results show that rock groups of graphite schist and quartzite had the most concentrated landslide activities in area A, while siltstone, sandstone, and chert rock groups in area B. The landslide susceptibility levels have a positive correlation with slope steepness in both the areas. The advantage slope gradient is 44°in area A and 38° in area B. There were also relations between elevation and earthquake-induced landslide distribution. Peak ground acceleration has no positive or consistent correlation with earthquake-induced landslide occurrence, but the distance from seismogenic fault shows approximate positive correlation with landsliding. There is a higher landslide distribution area ratio on the upper plate than on the lower plate.

The color tuning in Bacteriorhodopsin is mostly caused by mutated residues which directly interact with retinal. In the present study, we have found a significant color tuning at Ile78 substituted with a non-native residue R1. However, no color tuning at Gln75, Asn76, Thr128, Lys129, or Leu61 was observed. In Bacteriorhodopsin photocycle, the lifetime of M412 was significantly prolonged after the substitution. The structural analysis suggested that R1 might have a direct contact with the "water trimer" and interact with retinal through the long-distance hydrogen bonded network.

Against the ghosting and holes problem, this study proposes a novel method of depth-image-based view synthesis. First, we present a simultaneous rendering mechanism to generate the depth and image of virtual view at the same time, and then erase the ghosting by the depth comparison. Secondly, by means of depth-based hole filling and boundary treatment, we remove the holes in virtual view and boundary distortion. Experimental results show that, the PSNR of virtual view using this method is 2dB higher than that using MPEG-3DV/FTV reference method.

On the basis of the theories of the ocean surface specular-point scattering and slopes distribution and by applying the Gram-Charlier distribution of ocean surface slopes to make a model for the ocean surface specular-point scattering and taking wind speed at 10m above ocean surface as basis, we establish a calculation method for the radar backscattering cross-section of the ocean surface specular-point scattering model based on the Gram-Charlier distribution. By comparing with measured data, we verify accuracy and applicability of the ocean surface specular-point scattering model based on the Gram-Charlier distribution. By simulation study, we summarize the variety regulations of the ocean surface specular-point scattering systematically under different conditions that include wind speed, wind direction, polarization, wave band, angle of incidence, azimuth and so on, and have function of guiding practical application.

In this paper, differences in the characteristic between target and clutter in medium and high resolution SAR images are analyzed. By considering the differences in gray intensity correlation and shape between the ship target and the clutter, a new ship CFAR detection algorithm is proposed based on 2D independent joint K-distribution. The joint gray intensity distribution using 2D independent joint K-distribution in the clutter is modeled in the algorithm, and the detecting threshold is calculated at a given probability of false alarm to detect the SAR images. With this algorithm, the false alarms caused by speckle and local background non-homogeneity can be greatly reduced, the detection performance is much improved.

A novel narrow-band interference suppression scheme based on overlapped and windowed DFT was proposed for an OQPSK-modulated satellite spread-spectrum communication system. Several windows which satisfy the perfect reconstruction condition were simulated, and the relation between their performance and sidelobe characteristic was deeply analyzed. Several new transform-domain algorithms, such as the CME, pre-excision algorithm, and FCME, were analyzed in aspects of efficiency and complexity of implementation. Finally, a combined scheme of Hann window and the pre-excision algorithm was suggested, and its BER performance was improved by almost 5dB as compared to the conventional Cappoza scheme.

Embedded Multi-core system on a chip with reconfigurable hardware is efficient and flexible. Hardware/software task partitioning and scheduling are critical to minimization of the overall run-time of applications on such a platform. A high performance algorithm combining HW/SW task partitioning and scheduling is proposed in this paper. The algorithm can produce both partition results and schedule results at the same time. The time complexity of the proposed algorithm is O(V(E+V)+V²logV+PVlogV). The experimental results show the feasibility and effectivity of the proposed algorithm.

Since its entry into China in 1994, the Internet has developed rapidly. Based on a plenty of the first-hand survey data, we have approved that Chinas Internet is a scale-free network in several aspects, and have derived the power law formula.

Network coding is implemented in wireless networks to improve the network capacity in mobility scenario. We first formulate the network coding in vehicular network mathematically, and then prove that it is an NP-hard problem. For improving vehicular network capacity, we propose an optimal scheduling scheme focusing on the maximization of the coding opportunities. Simulations show the efficiency of the proposed scheme compared to the greedy algorithm, and the fairness.

The sink node deployment problem in wireless sensor networks is studied. By dividing infinite search space into a limited number of so-called "communication intersections", computational complexity has been significantly reduced. A grid-based linear programming is formulated and numerical results show the effectivity of the proposed approach.

PID control method is widely used in the feed-back circuit of switch mode power supply. Since the analog PID controller is sensitive to temperature and electromagnetic interference, we discuss hardware implementation of digital PID controller in the present paper. With pipeline operation the efficiency of the algorithm was improved, and with signed binary fraction operation the resource cost of the circuit was reduced. Finally, this digital PID algorithm was implemented on an Actel AFS600 FPGA chip, and simulation result shows its efficiency and feasibility.

Based on detailed analyses of all the methods about runtime process injection and hooking techniques in Windows operating system, we propose a method for dynamically detecting malicious code using the kernel-mode driver. It is implemented as a driver that is able to dynamically monitor every process, report attacks to the user accurately, and enhance overall system security.The experimental results show that this method achieves satisfactory detection effects in performance and detection.

In order to examine the prevalence of posttraumatic stress disorder(PTSD) and the developments of the symptoms among orphans aged 9 to 15 after Wenchuan earthquake, 188 orphans and normal children completed the Childrens impact of event scale in half-year and one year. The results indicate that the prevalence rate of probable PTSD among orphans was higher than that among normal children at the two time points. Moreover, orphans scores on the intrusion symptom were significantly higher than that of the normal children at the two time points. The present study indicates that the orphans were more susceptible to PTSD than normal children, especially with a higher level of intrusive symptoms and a longer latency.

For several classes of important stochastic nonlinear systems we develop new concepts and basic analysis tools, based on which some problems of controller design are investigated and solved. The main contents are the following. (1) For a class of stochastic nonlinear systems with unmeasurable dynamics, the concept of stochastic input-to-state stability (SISS) is introduced. By using the probability theory, a method of changing supply functions is developed in the stochastic framework, and a small-gain condition on the SISS is given for cascaded stochastic nonlinear systems. (2) For a class of large-scale stochastic nonlinear systems with SISS stochastic inverse dynamics, a decentralized adaptive stabilization controller based on output feedback is constructively designed. Both practical stabilization and asymptotical stabilization are solved. A method dealing with the stochastic nonlinear inverse dynamics is given in the framework of decentralized control. (3) For a class of stochastic nonlinear systems with unstable zero dynamics, the concept of stochastic input-to-state stabilization is introduced, and by using this concept a global stabilization controller based on output feedback is constructively designed. (4) For a class of stochastic nonlinear systems with linearly bounded unmeasurable states, the concept of generalized stochastic input-to-state stability is introduced with respect to the noises with unknown covariance and the general stochastic inputs, and by using this concept, output-feedback controllers are constructively designed for stochastic disturbance attenuation and asymptotically global stabilization, respectively. (5) For general stochastic nonlinear systems with time delays, some conditions on the existence and uniqueness of the solution are provided, global (asymptotical) stability in probability is introduced, and the corresponding criterion is obtained. Besides, for a class of uncertain stochastic nonlinear systems with time-varying time delays, an adaptive output-feedback stabilization controller is constructed.