It has been the hot issues of current theoretical research and practice to seek solutions to social contradictions and conflicts and to improve the management level to maintain social stability and harmonious development. The opposite problem is one type of contradictory propositions whose principles and methods are based on the transforming bridge of extenics. It reviews the transforming bridge method and its application. The transforming bridge method and its principles focus mainly on describing the problemchain of conductive contradiction, the system of contradictory propositions and other problems such as the classification of the transforming bridge, its design, 〖JP2〗its system and its setting. The transforming bridge method has been applied mainly in product design, planning and social management. Future research may be done into the design of a transforming bridge by combining the transforming bridge method and theories with system dynamics, the conflict theory, the social movement theory and the theory of harmony.

By comparing extenics and the TRIZ theory, it proposed the method of combining extenics with the TRIZ theory to solve contradictory problems, and analysed some actual cases by using extenics and the TRIZ theory respectively. The results indicate that there exist some similarities between extenics and the TRIZ theory in solving contradictory problems, thus providing more innovative ideas for the designers.

It proposes the introduction of extenics into the projectbased learning to improve students innovation ability. According to the process of product design, it presented the ways of applying extenics in solving noncompatible problems via the design of a mechanical transmission device. The results show that the method is feasible to improve students ability of analyzing and solving problems and to train their innovation ability, thus providing reference for teaching in other universities.

Silty clay samples taken 9.5 m beneath ground level from Shahu in Wuhan were mainly tested. Firstly, the  high pressure consolidometer was used to conduct the k₀ consolidation tests for both samples of natural silty clay and those of remoulded silty clay respectively. Secondly, stress controlled triaxial shear device was also used to test the samples of natural and remoulded silty clay along different loading paths under different drainage conditions. All testing data were analyzed and studied in detail. Experimental results show that: 1) natural silty clay is overconsolidated soil with OCR and lateral pressure coefficient being 1.2 and 0.56 respectively, and its structure yield strength is a little bit bigger than its preconsolidation pressure; 2) initial elastic modulus and shear strength of the natural soil are both higher than corresponding values of the remoulded soil; 3) for triaxial shearing under consolidated drainage conditions, the diltancy values causing volume increment of natural samples are usually smaller than the corresponding values of remtsiltoulded soil samples; but for triaxial shearing under consolidated undrainage status, the diltancy tendency for volume increment of the natural soil samples is more obvious than the corresponding diltancy tendency of the remoulded soil samples.

Based on the investigation of ground collapse in the Guanghua basin, it analyzes the types of ground collapse, spatiotemporal distributing characteristics, control factors and the formation mechanism of karst collapse. The results show that the ground collapse is mainly concealed karst collapse in carbonate rock distribution area, and that the development degree of karst and the overlying loose rock soil mass are the basic formation conditionssubstantial changes in groundwater table and vibration load are the induced dynamic formation conditions of the karst collapse. Regarding the genetic characteristics of ground collapse, some preventive measures, such as controlling underground water level variation and reducing the disturbance of soil, are proposed. The study provides good reference for city construction in the Guanghua basin.

Based on the solution to the dynamic impedance functions of pile-soil foundations under the conditions of layered soil, it studies the earthquake response of stadium stands with pile-soil structure interaction by combining the constant impedance method with the substructure method via finite element timehistory analysis. The finite element calculation results show that the maximum displacement and maximum acceleration response of the stadium stands under the action of different seismic waves are different due to the differences in the frequency spectrum characteristics of the seismic waves. The maximum displacement and maximum acceleration response of the stadium stands under the action of EL-Centro wave and artificial wave are close; the response under the action of TAR_TARZANA wave is slightly smaller, compared with the results of EL-Centro wave and artificial wave. Moreover, under the action of the three seismic waves mentioned above, the seismic response of the upper stand is obviously larger than that of the lower stand.

The complexity and uncertainty of the soft ground have great influence on the support engineering of deep foundation pit. With regard to a project in the Pearl River Delta under bad geological conditions, it presents a monitoring design in detail. A comprehensive analysis of the monitoring data, such as the horizontal displacement of retaining structures, underground water levels, axial forces of struts, and surface settlement, has been conducted to get some valuable deformation laws to ensure the quality of the foundation pit construction as well as the safety of the surrounding buildings. The influencing factors of the foundation pit supporting structure and the surrounding deformation have also been analyzed. 

A special Video Image Process System has been developed to get the microscopic dynamic data on shockwaves. The data has been compared with the vehicle microscopic data (speeds, accelerations, headways and reaction times) before & during the propagation of shockwaves. It has been found out that the drivers will change their driving strategies when they “recognize” a shockwave. Thus, it proposes a Fuzzy Logic based Shockwave Recognition Algorithm and simulates it. Besides, it proposes a shockwave elimination method by combining the Shockwave Recognition Algorithm with the Internet of Things.

Regarding the problem of trajectory tracking on the ship, it proposes the shortest tracking way to ensure that the ship keeps up with the expected straight line rapidly. That is looking for the optimal tracking point in the expected straight line and making the ship trajectory tracking. To get the calculation location by utilizing the interpolation method when the ship is running, it designed a trajectory tracking controller for position tracking which is uniformly asymptotical, based on backstepping. Considering the existence of disturbance, it improved the controller with the L-two-gain disturbance attenuation. Numerical simulation has been performed on the platform of MATLAB. Experimental results indicate that the proposed controller can quickly track the expected line, while keeping good reliability and a small margin of error in the trajectory tracking.

On the basis that in original literature minimum vehicle scheduling cost was set as the only objective, it sets the maximum customer satisfaction index as another objective, and proposes a mathematical model for the linehaul-feeder multi-objective vehicle routing problem with time windows and virtual depots . The new model economizes the replenishment number of round trips, distance and time. K-means clustering method was applied to select some customers as the replenishment points, the problem was solved through the multi-objective evolutionary algorithm, based on sub-regions and the max-min strategy, and some instances were tested in the VRP web question bank. The experimental results show that the proposed model is more effective than the traditional non linehaul-feeder VRPTW.

Based on the T-S model, it researches the problem with delay-dependent robust fuzzy control for stochastic nonlinear systems with parameter uncertainty and timevarying delay. According to theories and approaches of Lyapunov stability, Schur complement lemma，Jensen integral inequality and free weighting matrices and Ito formula, the system controller was designed for all admissible uncertainties by using the PDC method. When the LMIs were feasible, the desired state feedback controller could be constructed. Finally, the numerical example was given to demonstrate the effectiveness of the method.

It constructs a Lyapunov  function V(x) and then gives the general conditions to obtain unique global positive solutions to nonlinear Stochastic Delay Differential Equations(SDDEs) and at the same time p th-moment boundedness of the solutions. The above work is a practical application of the Khasminskii-Mao theorem.

The existence and uniqueness of the common fixed points of some expansive mapping pairs in the complete cone metric space are researched. The main results improve and generalize relevant conclusions about the issue in the metric space.

Based on the simulation model of dielectric barrier discharge (DBD) type ozone generators powered by parallel load resonant inverters, a kind of controlling strategies for the power supply is presented. The composition of the voltage in the DBD ozone generators was analyzed, and the fundamental wave equivalent circuit powered by sinusoid voltage source was achieved. The analysis model of the DBD system was established with the fundamental wave equivalent circuit. The application process of the fundamental wave analytical method was demonstrated.

With the method of nonimaging and freeform surface, it designed and researched two kinds of secondary optical devices, reflectors and lens. Optical devices with round uniform illumination characteristics were achieved. Through the programming calculation, the geometric profile of the optical devices was structured and simulated. A good uniform round lighting spot was obtained. The illumination uniformity of the round lighting surface is above 90%, suitable for higher uniformity requirements for indoor lighting. The research provides some reference for the design of high power LED uniform lighting.

The finite-element analysis of the brake stampingwelding shoes was conducted, based on software of ANSYS Workbench. Firstly, the sinusoidal distribution rule of positive pressure and friction force along the cambered surface of the brake shoe was analyzed. Then, the discrete loading method of positive pressure and friction force and the boundary conditions was established in a 3-D model. Finally, the size of deformation, stress, strain and the distribution of brake shoes were calculated. The results indicate that deformation, stress distribution of the brake shoes are even, the maximum deformation and the maximum stress occur in two webs with narrow spacing, but they are not beyond the scope of design requirements. 

On the basis of the establishment of onedimensional simulation model for the engine, engine simulation software AVL BOOST was applied to simulate the effects of different intake manifold pipe lengths and diameters on engine performance. The results show that the impact of pipe length and diameter on the engine torque and volumetric efficiency is significant. It provides a theoretical basis for further development and testing to solve the problem with the effects of the intake manifold pipe length and diameter on engine performance.

Effects of technological parameters on copper by Ni-P-polytetrafluoroethylene(PTFE) coating were investigated. Experimental results demonstrate that with the increase of surfactant concentration and the decrease of the coating thickness, the PTFE content first ascends and then declines while Ni and P content varies in a small range, and the C content declines. When the pH value increases, the coating grows thicker, the PTFE content ascends while Ni and P content varies in a small scale and the C content varies between 3.47%  and 4.38%. As the PTFE concentration increases, the coating thickness declines, the maximum PTFE content 3.42% appears at the PTFE concentration 13 mL/L while the Ni and P content in the coating decreases, the C content first drops and then increases. Moreover, the coating thickness increases greatly under a higher bath temperature. The maximum value of PTFE content is 7.26% at 85 ℃. The Ni content decreases at a higher temperature and the P content varies between 9.82% and 10.95%. And the C content decreases with the increase of the temperature.

It studies the corrosion process of recrystallized silicon carbide (R-SiC) and Si₃N₄ bonded SiC (Si₃N₄-SiC) in molten aluminum alloy, and concludes that under the 1 080 hour thermal cycle heating conditions, R-SiC and Si₃N₄-SiC have good chemical stability. The study has high application value for the selection of practical phase change solar energy storage alloy materials.

The electrochemical behavior of the Mo₂C  catalyzing ORR was studied via cyclic voltammetry and linear scanning voltammetry. Experimental results show that Mo₂C  has significant catalysis on ORR and the catalytic effect is enhanced with the increase of the load. When 2 g/L glucose solution was as anodic fuel, the MFC with 6 mg/cm² Mo₂C delivering power density of 1.95 W/m³ produced 81.5% as much power density as the MFC using Ptcatalyst cathode, and 56.3% as much power density as the MFC using Ptcatalyst cathode and anode under the same conditions.

Ultrasonic was employed to extract flavonoids from Pinus massoniana. Conditions for extraction were influenced by some factors, such as ethanol concentration,time and liquid-material ration, so they were optimized by response surface. Experimental results show the best conditions are as follows: the extracting time is 56 minutes,ethanol concentration is 40%, liquidmaterial ration equals 1:20, when the yield of flavonoids is 1.59%.This method is feasible for exploiting the material, and it provides the basis for its utilization. In the Response Surface experiment, compared with the factors of liquid-material ration and extracting time,ethanol concentration and power have greater influence on the extraction.