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Aiming at the problem that parallel robot exists the lack of movement precision, the zero calibration and performance assessment for a 6-DOF parallel platform used for wave simulation were completed. The inverse kinematics was acquired by using homogeneous coordinates method so as to establish the motion control model of the platform, and the workspace of certain posture was obtained by using boundary search method based on inverse kinematics. The motion control of the platform was realized, the design of control system was done by choosing PC and motion controller as the control mode. The motion performance was improved, vector derivation method was adopted to build the zero point error model,and zero calibration was implemented with the help of laser tracker. Finally, the platform was used to simulate a certain wave spectrum and the tracking performance was analyzed according to the experimental results. The results indicate that the calibrated platform has a good simulation performance. [ABSTRACT FROM AUTHOR]

Integrin, a member of the adhesion molecule family, plays an important role in the common gynecological diseases and reproductive health. Integrin was found to be related to ovarian cancer, endometrial cancer, endometriosis, cervical cancer, trophoblast cells diseases, and reproductive diseases. The research on integrin is benefit for prevention, diagnosis, treatment, and prognosis of gynecological diseases, as well as reproductive health and aristogenesis. In this paper, the function of integrin in the field of gynecologic diseases was reviewed. [ABSTRACT FROM AUTHOR]

Under the multi-factor Health-Jarrow-Morton (HJM) model, this paper proposed new stochastic interest rate risk measures. On the basis of the two-factor and three-factor Health-Jarrow-Morton (HJM) model, the paper gave the specific examples of the stochastic interest rate risk measure model. An empirical research was designed to examine the immunization effects of the single-factor and multi-factor stochastic, the traditional and stochastic interest rate risk measure. The results show that the immunization effect of stochastic interest rate risk measure model under the multi-factor Health-Jarrow-Morton (HJM) model is obviously superior to the single factor stochastic duration. This fully testifies the superiority of the stochastic interest rate risk measure than the traditional interest rate risk measure. The new method is valuable for the interest rate risk management. [ABSTRACT FROM AUTHOR]

Aiming at the low recognition rate when SNR is low in single node, this paper proposed a distributed cooperative method to recognize different modulation types based on wireless sensor networks and realized correct recognition of four classic modulations in low-SNR environment. It used several collaborated sensors in networks to improve the performance of the system and based on the principle of lowest sensor overhead. It designed cooperative method according to the relationships between the ability of the characteristics with the SNR and the calculation of characteristics, and each node extracted part of the characteristics. It combined a feature vector by the features which sent to the central node. Then it used support vector machine classifier to recognize the signals. Simulation results show that the recognition rate of the proposed method is higher than the single-node and the existed multi-nodes method, overhead of sensor is reduced, and has better adaptability to SNR environments. [ABSTRACT FROM AUTHOR]

To explain the phenomenon that the gas spurt which emerged after the coal bump, the variation before and after the coal bump including the microfractures in the coal and rock mass, the temperature, etc. were analyzed, also the influence of the mine seismic induced by the coal bump to gas adsorptive ability was analyzed, and gave the reasons why the phenomenon exists from multi-angle. The variation of the porosity and permeability of the coal under loading were researched by theoretical calculation and test of the gas permeability. Based on the constitutive equation of the gas coal, obtained the permeability curve of the coal under loading by using the relationship of stress-permeability under triaxial compression tests. The results show that the coal bump makes it possible for the gas to spurt, and the mechanical or non-mechanical effects given by the gas cause the descend of the strengthen but the ascent of the fragility of the coal and accelerate the deformation of the coal at the same time. The coal's triaxial compression tests show that its porosity and permeability have a tendency to reduce first and then to increase, and they will raise shapely when the stress is up to 70% of the failure load. The expand of the microfractures in the coal and rock mass and the increase of the permeability are the most direct causes for the numerous gas spurt after the coal bump in the coal mine with massive gas. The associated phenomenon with the coal bump like mine seismic and the temperature of the rock mass increasing stimulate the desorption and release of the gas. [ABSTRACT FROM AUTHOR]

In order to improve the quality of undergraduate thesis, we constructed the teaching model by combining undergraduate thesis team and scientific research team to direct the undergraduate degree thesis. We gave the full range of training from the thesis topic selection, experimental process, writing, and defense as well as team cooperation, especiaüy in the training of create ability and cooperation spirit. After five years' exploration and pratice, a remarkable outcome is obtained. As achievement of graduation thesis, team spirit and global capability have been improved obviously. We won the excellent graduation thesis team award of Jiangsu universities three times. More than ten SCI papers were published. And this model is valuable to be popularized widely and suitable for cultivaae system on research university. [ABSTRACT FROM AUTHOR]