Abstract:There are many problems in the engineering application of concrete verticalhole hollow block masonry, for instance, poor thermal insulation, seepage and crack. To solve these problems, a new type of concrete horizontalhole hollow block masonry was developed. 9 groups with 54 compressive specimens of the new type masonry were tested, and the deformation characteristic and the failure mechanism of the new type block masonry were obtained. Based on the experiment results and by reference to the current national standards, a new compressive strength formula was proposed. The stressstrain formula and elasticity modulus computational method for the new block masonry were proposed by using a logarithmic function model. The significance of this paper is to implement the strength design for the new type masonry and provide a basis to stress analysis and finite element analysis under uniaxial compression behavior.

Abstract:The characteristics and computational requirements of both the standard k-ε turbulence model and the SST k-ε turbulence model were presented. The two models were applied to the identification of flutter derivatives of a real bridge deck. It has been found that, based on suitable computational domain and grids arrangement, these models can identify most flutter derivatives of bridge decks with reasonable agreement. The difference between specific flutter derivatives indicates that the SST k-ε turbulence model is superior to the standard k-ε model on flow field prediction around bridge decks, and is more suitable to be employed to identify flutter derivatives of bridges.

Abstract:To realize the hysteretic properties and deformation capability of hybrid structure, six different types of frameshear walls were studied under low reversed cyclic loading. The hysteretic curves of the specimens were obtained. The various factors, which influenced the mechanical behavior by changing the shear wall stiffness, the types of frame column and the compression ratio, were compared. The loading process, failure mode and hysteretic curve of each specimen were analyzed. Finally, it was concluded that the lateral stiffness and deformability of the frameshear wall structure was dependent on the shear wall, the frame could improve the deformation capacity, and steel frame was more helpful to the structure’s seismic performance.

Abstract:An aeroelastic model of 1∶200 ratio of cooling tower was designed by using beamnet method, and then in Tongji university TJ3 wind tunnel, the dynamic response tests were carried out. It has been confirmed that vibration modes and aerodynamic parameters, windvibration factors and testing feasibility meet the requirement of wind tunnel tests, and the proposed method can avoid the shortages of traditional methods. The influence of interference effect was discussed with wind tunnel tests, and some important conclusions were drawn.

Abstract:The bending performances of different ordinary concretes and rubberized concrete by AE technology were investigated. Acoustic emission signals were also collected to analyze the damage process under bending test. The rupturing strength of rubberized concrete was found to be greater than that of the ordinary concrete with the same compressive strength. The AE result shows that the activity of AE signals is weaker for higher strength ordinary concrete, but the intensity is higher. It is also found that both the activity and the intensity of rubberized concrete are lower than the ordinary concrete, which demonstrates that the damage degree in rubberized concrete is lighter than in the ordinary concrete under static bending load, and this may account for the higher bending strength of rubberized concrete. The results of AE location analysis corresponds well with the actual damage area observed during the test.

Abstract:This paper presented a new boundarytype meshless method, Dual Hybrid Boundary Node Method (DHBNM), which combines the Hybrid BNM with the Dual Reciprocity Method (DRM), to solve Helmholtz equation. In this method, the solution of Helmholtz problem was divided into two parts, namely, the general solution and the particular solution. The general solution was solved by means of Hybrid BNM and the particular one was obtained with DRM. The proposed method retains the characteristics of the meshless method and BEM, which only requires discrete nodes constructed on the boundary of a domain, and several nodes in the domain are needed just for the RBF interpolation. The parameters that influence the performance of this method were studied with numerical examples. Numerical results for the solution of Helmholtz equation have shown that high convergence rates and high accuracy can be achieved.

Abstract:Electrical Discharge Machining（EDM） deposition technology was proposed to fabricate an abrasive layer with a specially designed compact electrode. Co powders, Cu powders and diamond grains were compressed and sintered as a compact electrode, and then the powders in the compact electrode were deposited on the surface of the workpiece to form an abrasive layer in the EDM method. The good shape of diamond grains were found in the deposited abrasive layer by SEM scanning, and elements Co and Cu were also found in the deposited layer. The experiment result has shown that it can be used to fabricate diamond abrasive layer in the EDM method.

Abstract:According to power system requirements, a kind of threephase multifunctional harmonic energy meter with radio frequency identification (RFID) interface and general packet radio service (GPRS) communication module was developed. The structure and the working principle of the energy meter were described, and its space electromagnetic interference (EMI), conducted coupling interference, and common impedance coupling interference were analyzed. The EMI propagation paths of energy meter were discussed, and the reliability design scheme of energy meter was proposed. The electromagnetic compatibility (EMC) design method of energy meter such as EMC of switch power, PCB routing, communication interface antiinterference design, the antistatic design and software antiinterference design, were analyzed. The EMC test results of the energy meter were given. The experiment and operating results have shown that the threephase multifunctional harmonic energy meter has better EMC.

Abstract:Based on the moving target division algorithm and the principle of simple calculation, great speed, and precise withdrawal of the moving target, the authors proposed an automatic division algorithm of moving target based on characteristics object, which combines the algorithm with correctional snake model to precisely withdraw the external outline of the moving target. Analysis and experiments have shown that the algorithm is simple and fast, few parameters need to be adjusted, and the capacity to resist disturbance is strong. The multiframe moving object mask can be effectively eliminated. Without overlapping multiple moving objects, the external outline of each moving object can be precisely located.

Abstract:A new intracellular gene delivery system based on oligochitosan (COS) was prepared and proven to be effective. First of all, The DNAzyme targeting EGFR (EGFR DRz) was designed and synthesized. Then, the biological effect of the EGFR DRz delivery system based on COS was studied in Hela cell with Flow Cytometry. It was shown that there was no statistically significant difference in transfection efficiency between liposome transfection reagent (89.7%)and COSEGFR DRz (88.7%) . The results of semiquantitative RTPCR confirmed that the EGFR mRNA in Hela cell could be cleaved by targeting COSEGFR DRz. The cell cycle analysis in Hela cells transfected with COSEGFR DRz revealed an arrestment in the G0/G1 phase. And the cell apoptosis rate induced by COSEGFR DRz was 19.3%, which was higher than the rate induced by liposomeEGFR DRz (13.0%). These results have demonstrated that COS possesses higher transfection efficiency and lower cytotoxicity. It will be a potential DNAzyme delivery system.

Abstract:A layer of copper thin films was deposited on AlN ceramic substrate in the DC magnetron sputtering method, the influences of deposited temperature on the stress of Cu thin films metallization on AlN substrate were studied in the Xray diffraction (XRD) method, and the effects of deposition temperature on the stress and deformation were also analyzed in the finite element analysis method. The residual stress in Cu film was tensile stresses, which increased first and then decreased with the increase of deposition temperature, and the stress reached the maximal value when the deposition temperature was 200 ℃. The stress of Cu thin films metallization on AlN substrate could be reduced by implanting the transition interface on AlN substrates. The change of stresses was explained according to its microstructure and physical properties.

Abstract:Crack opening displacement and the numbers of screw dislocations distributed at the interfacial crack tips of a piezoelectric body were investigated. By using RiemannSchwarz’s symmetry principle and the singularity analysis method of complex functions, the general solutions of the problem were presented. Numeric curves show that piezoelectricity has less effect on the interfacial crack opening displacement, while the numbers of screws dislocation and biomaterial properties have obvious effect on the interfacial crack opening displacement and the numbers of screw dislocations.

Abstract:Emergy analysis was introduced into iron and steel industrial system. Through quantitative analysis and evaluation of energy, material, and money flows of the iron and steel industrial park, an emergy comprehensive evaluation system, which was based on the structure, function, ecological efficiency, economic efficiency, and sustainable development index, was established to quantitatively analyze the structure characteristics, ecology and economy benefits, and sustainability, and to provide theoretical basis for the construction of ecological industrial park, formulation of correct system management measures and development policies. The case study results of the iron and steel park of China indicate that the indexes after the adoption of material cycling and energy cascade are better than those of the traditional industry chain.

Abstract:This paper presented a WSN node’s theoretical mode, which includes traffic factor, aggregation factor and bridging factor, and then constructed an articulationnode’s determination and discovery algorithm. Experiment results have shown that the invalidation of nodes identified by the model will have a serious impact on the connectivity of the network. By using this method, we can quickly identify the hot spots in WSN.

Abstract:A watermarking algorithm for image authentication based on statistical model and direction wavelet was proposed. The image directional flow was constructed by using directional wavelet, and it could depict the characteristic of the image. By applying noise visibility function, the noise visibility intensity was structured. The blocks of image, which contain more texture information,were selected to hide the image directional flow. The image was authenticated by comparing the hiding information and the image directional flow. This algorithm can well resist the JPEG compression and noise attacks, and it guarantees the quality of the sight. It is a blind detection algorithm, and this algorithm has high concealment performance and security.

Abstract:This paper introduced the three types of crosslinks: capital accumulation, financial capital accumulation and labor market adjustments, into the dynamic computable general equilibrium model to analyze the RMB exchange rate movements on China's employment. The results have shown that RMB appreciation will lead to the increase of labor costs, thus many laborintensive enterprises will lose product price advantages and the unemployment will increase. The impacts of RMB appreciation on different industries are different. The employment situation in the laborintensive industries and exportoriented industries of raw materials will deteriorate, but the impacts on raw materials are positive, and service industries can also benefit from the RMB appreciation, and the impacts of RMB appreciation on China's primary industry jobs are more stable.

Abstract:Since the reform and opening up of China, income growth has become an important factor influencing the consumption growth of Hunan urban residents. In different periods, urban residents in Hunan have faced different consumption environment and chosen different consumption patterns. At the beginning of the reform and opening up, urban residents' consumption behaviors were sensitive to some regular factors, and since the mid 1990s, the consumption behaviors have mainly been influenced by their income and future uncertainties. Efforts should be made to improve the urban residents' income, to stabilize future income growth expectations, to establish and improve the social security system in accordance with the socialist market economy, to promote consumer financial development in an allround way, and then to increase the consumption of Hunan urban residents rapidly.