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This paper presents the results of a numerical study on rotational behavior of bolted glulam beam-to-column connections. Since wood often exhibited complex failure behavior under different loading states, a three dimensional anisotropic damage analysis model of wood was initially developed based on continuum damage mechanics theory for progressive failure analysis of wood. The damage model basically consisted of two ingredients: the failure criterion proposed by Sandhaas was chosen to capture the damage onset; three independent damage variables were adopted to control the ductile and brittle damage evolution process of wood. This material model was implemented in a commercial available finite element method based code using a user-material subroutine. Finite element model of bolted connection coupled with the proposed material model was established to further investigate the failure modes and moment resistance of such connections. It was found that the damage evolution progress was very similar to the crack development from experimental tests. By comparing the experimental results and numerical predictions, a fair agreement of the initial stiffness and moment resistance was found with modeling error less than 3%, which implied that the finite element model was suitable to simulate the rotational behavior of such connections. This research could provide the reference for the design of bolted glulam connections in heavy timber structures.

In allusion to the stability of transferring between grid-connected and off-grid state in micro-grid, this paper introduces the seamless switching technology, analyzes the key technologies of seamless switching and the existing problems, and gets the conclusion about research status of seamless switching.

Position equation of 3-RRC parallel mechanism is established and its position direct and inverse solution is solved. The mechanism rate equation is established and its kinematics analysis is done. The result shows that it is easier to solve the kinematics inverse solution of the parallel mechanism.

It is affected by multi-dimensional vibration during car’s driving. In this paper, the forms of multi-dimensional vibration from car instruments and equipment are determined, and the type selection principals for main body mechanism of car multi-dimension vibration-absorption device are introduced. Besides, using software ADAMS, virtual design and kinematical characteristics test for car multi-dimension vibration-absorption device are fulfilled.

NVM has become a promising technology to partly replace SRAM as on-chip cache and reduce the gap between the core and cache. To take all advantages of NVM and SRAM, we propose a Hybrid Cache, constructing on-chip cache hierarchies with different technologies. As shown in article, hybrid cache performance and power consumption of Hybrid Cache have a large advantage over caches base on single technologies. In addition, we have shown some other methods that can optimize the performance of hybrid cache.

The PEEK/PEI/PES plastic alloys were processed by twin-screw extruder at 370°C separately with five mass ratios of 70/30, 70/25/5, 65/30/5, 60/30/10. The flame retardant of plastic alloys were investigated by experiments, their results showed that, the oxygen index declines when PES was added, the oxygen index of plastic alloy with mass ratios of 70/30 is higher than that of pure PEEK or PES, lower than that of pure PEI, which the oxygen index is 37.1%. The volume resistivity plastic alloy with mass ratios of 60/30/10 is 3.72×1017Ω·cm, which is higher than that of pure PEEK and PES for two orders of magnitude, and the insulation performance of PEEK is improved significantly by alloying.

Plasma physical vapor deposition method was most widely used to prepare ultrafine Al powders. Direct Current Arc Plasma (DCAP) and Radio Frequency Induction Plasma (RFIP) were adopted individually to produce Al powders with different particle size. The micro structure such as grain size, morphology and crystal phase was examined by SEM, TEM and XRD methods. The results show that the Al production by RFIP was better than by DCAP. DCAP has outstanding advantages in producing nanoAl powders with the particle size below 300nm while the RFIP is better to produce Al powders with the particle size 300nm to 1 μm.

In the design of machinery, Calculating and validating of bearings are exertive. Artificial Intelligence is the requirement of future design. This paper proposes a bearing expert system based on multiple reasoning, which highly improves the efficiency and quality of bearing design. The system and implementing method can be farther used in intelligent mechanical design.

Aiming to meet the demand for real-time monitoring and adjustment in modern tailings management process, and solving the problems the development of technological innovations bring about ,this paper comes up with the establishment of this system for tailings based on LabVIEW. Utilizing the LabVIEW software platform, the ACCESS database and SQL language development technology, the paper is able to design various functional modules to optimize monitoring accuracy, data processing efficiency, and costs. The system can play a pivotal role in acquiring real-time change of the indicators, updating and sharing of the relevant data, which can finally assure the operation of tailings.

The management of old goaf is always the emphasis and difficulty in our mining industry. And the filling method is a important means for managing the old goaf. Taking a certain old goaf in ZiBo as an example, the article in detail introduced the process of old goaf management, proposed methods of regulating the quality of filling materials, constructing a new downhole water filter wall and controlling concentration of solution value in 53% to 55%, to strengthen the quality of concentration of solution. Based on this, the strength of filling body is 0.6Mpa more than the designed requirement, which can bring the good experience for similar researches.

Taking the mining subsidence as research object, a real-time monitoring scheme was designed. On this basis, a virtual instrument monitoring system based on LabVIEW was constructed. The data acquisition instrument collect real-time data through monitoring of subsidence and subsidence slope deformation by this system in range of mining influence, then control and transform it. After this, the data was transmitted to the computer terminal through wireless transmission equipment, and monitoring will be got after analysis and prediction by computer terminal. This result can provide mining of this area with real-time advice and guidance, to reduce the harms brought by mining subsidence and unnecessary economic losses.

The template method combined with sol-dipping deposition or sol-electrophoresis was used to prepare titania (TiO2) nanowires with shape of rod or string of beads. When irradiated under ultraviolet (UV) light for 1 hour, the degradation rate of methyl orange (MO) using nanowire arrays reached 98.5% which was 1.84 times as much as that of the thin film on glass plate, and when irradiated under visible light for 6 hours, the degradation rate reached 96.7% which was 4.17 times as much as that of the thin film.

Dealt with the short precision the traditional Taylor series expansion induced and shortage that the system mechanics is hard to match with the exact linearization conditions, a novel exact linearization algorithm of tight coupling nonlinear system based on differential manifold to the missile attitude control system is proposed. A dimension expansion method is proposed, the method solves the problem that the input and output dimensions can not meet the exact linearization conditions; the algorithm application range is widened. Using the principle of the differential manifold, the missile velocity and height information are selected as the measure output, the exact linearization of the missile attitude system is derived based on the diffeomorphism transformations. The simulations are performed on the missile attitude control system. Simulation results show that the effectiveness of the algorithm proposed.

A novel biclustering algorithm is proposed in this paper, which can be used to cluster gene expression data. One of the contributions of this paper is a novel and effective residue function of the biclustering algorithm. Furthermore, a new optimal algorithm which is mixed by the parallel genetic algorithm and the particle swarm optimal algorithm is firstly used to the algorithm of the biclustering for gene expression data. we compared our algorithm with traditional genetic algorithm in biclustering. The results reveal that novel proposed algorithms could discover the interesting patterns in the gene expression profiles.

With people pay more and more attention to component software testing, the generation of test case is as one of the important works of software testing, it becomes a hotspot inevitably. For component software testing, making combination of the testing method based on model and testing method based on Genetic Algorithm, this paper proposes a generating method of test case which based on UML (Unified Modeling Language) activity diagram and Genetic Algorithm, and gives the overall design and implementation steps of the method. Then this paper applies the proposed method to model the adding table business in catering management system, and design test case. The example verifies the feasibility and validity of the method.

To overcome the deficiency of descriptive ability, cross-platform ability and interaction in existing workflow system, this article proposes an interactive workflow management system based on J2EE technical. The system uses hierarchical description's method to simplify the workflow model, supports the visual modeling, and has the good interaction. The practical application shows that the system has obvious advantages on enhancing descriptive power, reducing the modeling complexity, strengthening model interactivity ability and cross-platform ability.

Room-and-pillar mining method plays a dominant role in gypsum mines, which owns a low resource recovery ratio and has left many gobs leading a series of safety production problems to mining enterprises. To get an utmost resource recovery and avoid gob collapse, a secondary utilization scheme has been made by feasibility analysis and theoretical calculation. In this scheme, theoretical calculation about the occurrence conditions of mining damage has been done, and the deep research direction of the mining damage mechanism in gob-effect gypsum mines has been pointed out. This research and its train of thought could provide the gob-effect gypsum mines with reference that would increase ore recovery ratio and prevent mining damage.

A method to inspect fabric defects based on compactly supported biorthogonal wavelet transform is presented. Firstly, the fabric images are captured by CCD camera. Then fabric defects are detected by means of the strategy of compactly supported biorthogonal wavelet transform. The phase shifts with the orthogonal and the biorthogonal wavelet techniques are compared aiming at the warp-lacking. It is shown that the phase shifts of orthogonal wavelet behave as different degrees, the ones of biorthogonal wavelet are zero. Finally, employing the biorthogonal wavelet method to inspect fabric defects, including warp-lacking, weft-lacking, oil stains, and holes, is given by experiments, in which the results are satisfied.

Based on the analysis of the equipment requirements for the "upper-adsorption” electrostatic flocking method of the Activated Carbon Fibers, the overall design of equipment is given, and the electrostatic system, the main function equipments and control systems of the device are also introduced separately.