Abstract:A twodimensional gray image of the material fault can be obtained without destruction by industrial computer tomography (ICT). This process is used to distinguish the seizure and the expansion of cracks within the initiation section. A fatigue life prediction method based on industrial CT images was studied. First, the crack initiation and expansion processes were divided into three phases: microscale thinness sight crack, CT scale crack, and macroscopic crack. Second, different crack initiation and expansion standards were adapted to calculate material fatigue life. The fatigue life of the material was the sum of the three phase's fatigue lives. Compared with other methods, such as the fatigue cumulative damage theory method and the nominal stress method, the fatigue life predicted by this method is more precise.

Abstract:The general methods in reverse engineering cannot measure the inside of close parts. Traditional methods like Capture Geometrical Inside (CGI) would destroy the part. We used the industrial computer tomography (ICT) method to obtain accurate measurements of close parts. Based on the acquired computer tomography images, the size of an internal part was obtained through image measurement and subsequently edited, amended, and dimensioned in CAD software. First, the position and the pixel size of the circle were determined based on existence probability. Next, the actual size of one pixel was obtained based on the image size and the purview diameter. Finally, the actual circle size was calculated by multiplying the pixel size and the actual size of one pixel. A real part was measured using the method. The results show that the relative error of the measured circle radius and the actual size is less than 0.5% and the measuring time is several seconds.

Abstract:Using the referenced slip rate and angle acceleration of the wheel as input vectors and the braking pressure as an output vector, an automobile antilock braking system (ABS) controller based on a least squares support vector machine (LSSVM) was designed. Training the LSSVM controller using the supporting vector, the parameter of the controller was calculated. An antilock braking system was designed that includes an input layer, a control layer, and an output layer. Using wheel speed as an input, the braking pressure of each wheel was calculated. The pulse width modulation (PWM) method was used to control the braking pressure, and thereby to bring ABS control. An automotive ABS test and control system was constructed. Road tests under different conditions were completed according to international standards. Test results show that an antilock braking control method based on LSSVM has good braking stability and adaptability. It is an effective new ABS control method.

Abstract:We introduced a site selection method based on the modified maximum elevation angle intended for mountains possibly affecting the measurement and control of the initial phase in a launching port located in mountainous areas. To use the former analysis results, the method, along the helices whose center is the launcher's project point, analyze each point's visibility on the helices. The visible area can be obtained by comparing the visibility at each moment in the initial phase. Finally, there can be three points in the above visible area with distances longer than required.

Abstract:A data recording system for fault diagnosis of hybridelectric vehicles was studied by taking the integrated starter and generator (ISG) hybrid electric vehicle as the investigation object. The fault diagnosis communication net was established using a CAN bus and a K line. As designed, the system hardware structure included a CPU processing module, a communication module, and a USB recording module. With the system requirements and characteristics in mind, special circuit design and analysis of USB mass storage module were carried out based on the hardware scheme and software design. In the running test, the fault data recording system worked stably, and the data was recorded integrally and correctly. At the same time, the online display data accurately reflected the vehicle's running status.

Abstract:A 3Dmodel of a 2DOF spatial linkage mechanism was built using ADAMS. Kinematic analysis and simulation of the model were performed. The analysis results show that this mechanism meets the design requirements, which provides the basis for further design and control of the mechanism. The main factors that have an impact on mechanism precision subsequently were analyzed and designed. The results show that the sensitivity of the two legs' lengths ranks higher than that of the other design variables. Therefore, the precision design of the bipod is the key point to achieve mechanism precision. The study provides a theoretical foundation for the design, manufacture, assembly, and control of the mechanism.

Abstract:A new crystal spectrometer with high spatial and spectral resolution was designed to measure very low emissive Xray spectra of laserproduced plasma in the 0.5 nm to 0.8 nm range. Twin channels collocated perpendicularly with two different crystal materials and forms were utilized for simultaneous measurement of spectral and spatial resolution. The imaging plate was employed to obtain high spatial resolution with effective area of 30 mm×80 mm. The basic parameters of crystals were analyzed and the design parameters of the spectrometer are presented herein. The first experiment was carried out at the 20 J energy laser facility of Research Center of Laser Fusion, CAEP. Xray spectra were obtained from Al laserproduced plasmas with a spectral resolution of 1 000 to 1 500 for the spherically bent mica crystal spectrometer and spatial resolutions of 1.73 mm to 6.88 mm for the flat PET crystal in the same condition. It is suggested that the device be used in highdensity plasma diagnostics of a single laser shot.

Abstract:A new analysis and filtering method for the ultrahigh order harmonic from the alternating current (AC)direct current (DC)AC main drive loads was proposed. The method was based on the practice and the new notation of the ARU（active rectifier unit） main transformer, and the specification of the integrated gate commutated thrusters (IGCT) and injection enhanced gate transistors (IEGT). By analyzing the features of the ultrahigh order harmonic, the harmfulness to electrical equipment and manufacturing as well as the necessity to filter ultrahigh order harmonic, indicates it is necessary to set up a higher frequency (HF)type filter. This research serves as a reference for designing and manufacturing the HFtype filter in the power supply of rolling mills.

Abstract:This research investigated problems influencing tracked vehicles steering dynamic characteristics, such as rolling resistance during straight driving, steering centrifugal resistance, acceleration resistance during straight driving, scratching soil resistance of steering. Based on research about the relationship between the hydraulic steering regulation speed system and its maximum stable work pressure when vehicles have central steering on good roads (such as cement and rural roads), a zero differential hydraulic steering system of power shift steering transmission can ensure that vehicles maintain straight ahead stability through reasonably matching a steering drive system. The test indicates that vehicles have good dynamic characteristics when the work pressure accounted for 60% to 80% of the security work pressure.

Abstract:The relationship between grating parameters and wavelet spectrum values was deduced. Firstly, the vector diffraction theory and scalar quantity diffraction theory were used to calculate the diffraction efficiency. The approximately equal conditions were analyzed next. Finally, the relationship was obtained. The gap width of the plane transmission grating was calculated with the Mexicohat wavelet. The relationship among the parameters of the plane transmission grating, diffraction efficiency and Mexicohat wavelet values was obtained.

Abstract:The binary phaseonly filter (BPOF) based digital image watermarking combined with a discrete wavelet transform (DWT) was proposed. Firstly, the DWT transform was applied to an image. Then, the discrete Fourier transform (DFT) was applied to the low frequency subband of the DWT transform. Next, the phase information of the DFT was binarized to obtain the BPOF, which would be taken as the watermark and embedded into the corresponding magnitude. Compared to applying the DFT transform to the whole image and embedding the BPOF watermark in the entire frequency range, or in the low frequency range, the watermark robustness in JPEG compression is improved significantly while maintaining the watermark imperceptibility and detection efficiency. This method may be used to demonstrate the authenticity and integrity of an image. The simulation experiments demonstrate the efficiency of this method.

Abstract:Based on road design information, we derived coordinates of arbitrary points in the pile and crosssectional azimuth which may guide global positioning system (GPS) surveying in section surveys. Also, we introduced Windows CE technology into the measurement process, using embedded programming for the GPS realtime data process. It emphasizes designing the functional components of GPS data communications, data displays and cross sectional surveys. The software system may be used to produce the liberal station, realtime dynamic display, and indoor and outdoor work processing. This system has been used in the ShanghaiChengdu West Road Item. The results show that the integrated system of indoor and outdoor works for realtime kinematic (RTK) surveying in a mountain highway could simultaneously process indoor surveys and outdoor data.

Abstract:The essentiality of humaninformation system interaction efficiency was analyzed under the computerization environment of enterprises. Information processing ability was measured from three dimensions: working memory, cognitive skill, and computer selfefficacy. The experimental method was used to study the influence of information processing ability on humaninformation system interaction efficiency. Multiple regression results show that cognitive skill is the main factor influencing interaction efficiency for skillbased tasks, working memory is the main factor for rulebased tasks, and working memory has no significant influence on interaction efficiency for knowledgebased tasks. Working memory and computer selfefficacy are the main factors influencing interaction efficiency for total tasks.

Abstract:In order to improve the convergence rate of genetic algorithms based on edge detection, a novel edge detection method based on a good point set genetic algorithm (GGA) was proposed. The proposed method designed the crossover operation with the theory of good point set in which the progeny inherits the common genes of the parents which represent its family so as to improve the convergence rate of the genetic algorithm. Furthermore, before the algorithm was used for edge detection, the feature space of the image grey level was transformed into the feature space of the fuzzy entropy. Dissimilarity enhancement processing next was applied to the image by using a fuzzy entropy theory to filter the nonedge pixels so as to reduce the scale of the solution domain. This approach offered another efficient way to improve the convergence rate. Experimental results show the proposed algorithm performs very well in terms of convergence rate. The detected edge image is well localized, thin, and robustly resistant to noise.

Abstract:Because basic CMOS gates are widely employed in highperformance VLSI chips, we designed completely customized high performance 52bit orgates and 108bit andgates. HSPICE tools were used to simulate the circuits in a CSM 0.13 μm process, under 1.2 V power voltage at 25℃. Based on the features of different circuits, the corresponding input stimuli of the theoretically maximal delay were used for simulation. The frequency of the input stimulus was 1.25 GHz, while the skew was set as 10% of the input stimulus cycle. The input delay was the interval from 50% of input voltage to 50% of output voltage per cycle, and the maximal delay was the maximum of the delays of all input data. According to the different logic types, five types of 52bit orgates and two types of andgates were designed. Comparing with the simulation results, we conclude that the fully customized gates we designed are superior in many aspects such as speed, power, and area.

Abstract:For city traffic management, an underground induction winding is used to identify vehicles inside the red light forbidden zone in most computer monitoring systems at traffic lights. We described how to apply video motion detection (VMD) technology in these computer surveillance systems instead of underground induction windings. Using VMD eliminates the underground induction windings that damage road surfaces. The possibility of applying and implementing VMD technology with supporting hardware was analyzed. We described how to develop the program to record automatically those vehicles that violate traffic rules at traffic lights, and to obtain the traffic status of and evidence about those vehicles.

Abstract:An algorithm was proposed in view of the combination of image compression and encryption. We got the approximate part and three detail parts after transforming the image with discrete wavelet transform (DWT), and compressed the image by modifying the detail parts by a given threshold value based on human visual systems. And then, we encrypted the image by scrambling the approximate part because this part held mostly of the energy. Last, a compressed and encrypted image can be achieved after DWT. Simulation result shows a good effect on the combination of compression and encryption.

Abstract:We presented herein detailed comparison between emulational and real earthquake signals. Intrinsic Mode Functions (IMF) were regarded as products of the empirical mode decomposition (EMD) during HilbertHuang transform (HHT) processing. This could be ascribed primarily to the failure of separating the correct frequency from mixed and similar frequency components. It was difficult to remove IMF signal from the earthquake record and to obtain correct earthquake energy distribution in frequency. Furthermore, The Hilbert transform sometimes induced erroneous instantaneous frequencies. Thus, care must be taken in the application of HHT in earthquake engineering. The combination of the Hilbert transform with wavelet transform could produce better analysis of earthquake record.

Abstract:After an analysis of the characteristics of impulse electroflotation wastewater treatment equipment, we discussed the factors affecting the efficiency of this technology. A simplified steel ball model was used in the construction of the free particle flotation removal model based on the kinematical theory of flocculation processes. Variation of the concentration of a free particle over time was stimulated. This mathematical model showed a significant role in the design of the flocculator parameter, and provided theoretical guidance on the choice of electric flotation parameters and the design of the electric flotation treatment equipment. The simulated results suggest that when the treatment time was between 20 and 25 minutes, the free particle removal rate could exceed 90%, a finding consistent with the experimental data.

Abstract:Acorus calamus L, Yperus slternifolius, and Vetoveria zizanioides were planted in test floating beds. Three beds where the water flowed automatically due to the gravity were used in the research. The quality of the leakage water was checked. The results indicated the COD, TN and TP could be removed from the floating bed system of Acorus calamus L and the mixed floating bed system of Acorus calamus L and Yperus slternifolius, respectively. The data indicate that the direct absorption of nitrogen and phosphorus by the plants was not the major removal approach. When the inflow water quality was worse than V kinds of heavy polluted river water, the average elimination rate of COD, TP, TN in the floating bed of Acorus calamus L, Yperus slternifolius and Vetoveria zizanioides could reach 20.46％, 23.3％, 18.9％；38.35％, 45.46％, 44.8％, and 42.34％, 45.82％, 38.6％, respectively.

Abstract:Many residential buildings use externallyinsulated wall structures in Chongqing, P.R. China. The process of determining the economic insulation thickness was based on degree days and present worth factor when wall structure adopted different insulation materials. The optimal economic insulation thickness was related to the region of the building, air conditioning operating time, and price of insulation material. Insulation materials with better thermal performance have a shorter payback time and wider prospects for application.

Abstract:The evolvement of rock damage struck by a highpressure water jet is characterized by nonlinear properties, thus making it a complicated dynamic problem. Based on a nonlinear finite element and elasticplasticity theory, a computational model was established. The dynamic load striking the rock by a highpressure water jet was simulated by the dynamic contact method. Furthermore, the propagation of a stress wave in the same rock was simulated at different impact velocities. The results show that the propagation velocity of a stress wave is proportional to the impact velocity of the highpressure water jet. The effects of a stress wave in sandstone and coal impacted by highpressure water jets of the same velocity were simulated.The effect of a stress wave in coal was stronger than in sandstone, while the region of propagation of stress wave in coal was smaller.

Abstract:The creep characteristics of coal and rock under confining pressure in Songzao, P.R. China were studied. The experimental data were analyzed and discussed in detail. The characteristics of creep could be described by the generalized KB model after the experimental data were fitted. The parameters of the model were obtained. The results show that when the creep load was σ≥σs, the curve of coal and rock under confining pressure displayed three typical phases. In the first and second phases, the fitted curve was consistent with the test curve. Thus, the generalized KB model can describe the whole process of coal creep under confining pressure.

Abstract:The chromatographic fingerprint of Pinellia ternata was established by high performance liquid chromatography (HPLC) using an Agilent C18 (5 μm, 4.6×250 mm) column; CH3OH∶H2O as elution solvents; an ultraviolet detector at 254 nm; a flow rate of 1.0 mL/min. The guanosine peak was used as the reference and the relative retention value α and the relative area Sr as the parameters for the survey of the chromatographic fingerprint. Nine copossessing peaks were selected as the charaterizing fingerprint peaks to distinguish Pinellia ternata from false Pinellia ternata. The relative retention time of the 9 peaks were 1.00, 1.12, 1.50, 1.56, 1.60, 1.67, 1.71, 1.81 and 1.87, respectively. These peaks can be used to identify the quality of Pinellia ternata.

Abstract:The cerbB2 oncogene antisense oligodeoxynucleotide probe was obtained by chemical crosslinking approach. Its T2 relaxivity was 0.156×106 mo l－1·s－1 , which was determined with a 1.5T MR system. The saturated magnetization, specific saturated magnetization, specific retentivity and retentivity were 69.423 8emu/g Fe, 68.413 4e mu/g, 30.354 1e mu/g and 19.734 5 Gs, respectively. These measurements were obtained with a vibratingsample magnetometer. To test its effectiveness, highly expressive SKBr3 oncocytes were transfected with the antisense oligodeoxynucleotide probe. Meanwhile, SKBr3 oncocytes were transfected with the sense and nonsense oligodeoxynucleotide probe, and normal mouse liver cells were transfected with the antisense oligodeoxynucleotide probe. The results show that the antisense probe could enter the SKBr3 oncocytes effectively, and improve the magnetic properties and decrease the signal intensity in MR scanning obviously.

Abstract:We presented herein a communication theoretical model which used the translation of gene expression. Based on the minimum Hamming distance decoding, the processing of the expression efficiency of prokaryotic DNA was analyzed and simulated when the ribosome 16S RNA mutate. The results showed prokaryotes could correct the DNA based on the ribosome 16S RNA. It was demonstrated that the communications coding theory in the analysis of the genetic information transfer of prokaryotes was efficient.