Search

BEE project is a category of complicated and systematic engineering in construction industry, not only concerned with alleviation of energy shortage pressure and melioration of residential conditions, but also related to both sustainable development of low carbon society and promotion of circular economy. Three main parts including green building, renewable and clean energy technologies and environmental protection are analyzed and studied in a holistic way. In general, energy-saving technologies and energy management pattern have been researched in detail based on general building energy efficiency theory, so as to effectively promote building energy-efficient application system.

FLUENT software was used to analyze the distribution of internal pressure P of elbow with the variation of outlet pressure P0, inlet velocity v, fluid density ρ and the degree of curvature k=R/D during the flow of crude oil in 180 degree bend pipe, to establish 135 kinds of working condition of internal pressure P distribution database. According to the distribution law of the pressure of the inner wall of the elbow under different parameters (P0, v, ρ, k), calculation formula of the internal pressure distribution of the pipe is analyzed and fitted by 1stOpt software. Through the numerical simulation results of 11 kinds of working condition of FLUENT, the calculation precision of the formula was verified (Maximum relative error). It provides basis for design of bend pipe and safety evaluation of pipeline in high pressure, high flow rate and long distance petroleum pipeline.

Mn, Co, and Ni-doped La0.5Sr0.5FeO3 thin films were prepared by the sol-gel technique with different annesling atmosphere. The structure and dielectric properties of the films were researched by XRD, SEM and Agilent. The study found that LSF-Mn (Co, Ni) films under the argon annealing atmosphere were have optimal dielectric properties. And Mn, Co, Ni elements are integrated into La0.5Sr0.5FeO3 lattices with the single perovskite phase. And uniform grain was distribution on the film surface.

According to the FLUENT simulation results of the 90°elbow pipe fluid flow condition, the influence of the pressure distribution about the variation of the flow parameters (v、P0 、ρ) and the geometric parameters (R、d、k=R/d、α、β) is analyzed. By using the dimensionless analysis method, on the basis of the influence of the 32 set of parameter variations on the elbow pipe wall pressure distribution regularity, the pressure qualitative function is established including the geometric parameters and the flow parameters. Through the 155 kinds of the FLUENT simulation results, the fitting software 1stOpt is used to verify the internal pressure model above and fit the undetermined coefficients. The verification shows that the model is of a higher calculation precision and the relative error isn’t exceeding 0.003%. It provides a theoretical basis to check the strength of the bend and design the pipeline with high pressure and speed.

On the premise of the simulation data for the inner fuild passing the elbow pipe by means of software named FLUENT and dimensional analysis, the formula modle of inner surface pressure for elbow pipes came up by analyzing the relationships among the inner surface pressure P ,the fluid outlet pressure P0 ,axial angle α, circular angle β and the degree of curvature k; Depending on the inner surface pressure data simulated under 150 kinds of conditions, the pressure formula was fitted by means of 1stOpt software; The verification results show that the calculated value by the formula matched with the value of simulation by FLUENT software very well, the maximum relative error was 0.004%, and the research conclusion layed the theoretical groundwork for the design of the high pressure and high velocity elbow.

This paper first used parametric design language APDL to establish three kind of the single hyperbolic paraboloid shell model with rectangular projection. The parametric design of the reticulated shell structure could be realized after inputting the span (S),rise (F),the grid number of each side (Kn),the warping rate (K),which provided great convenience for optimizing the structure and force analysis.Then through contrasting three structure schemes and different warping rate,it studied how they influence the mechanical properties of structure.And at last it got some conclusions with engineering significance.

By using the parametric design language APDL, developed ellipsoidal reticulated shell parametric macros, only enter the long axis S1, short axis S2, high vector F, scale factor t, ring symmetric region shares Kn, radial nodes turns Nx, to generate the desired lattice shell; comparative analysis of 30 kinds of scheme through two types of single-shell ellipsoid reticulated shell with different rise span ratio force, studied its stress characteristics, providing a theoretical reference for designing and engineering ellipsoid reticulated shell application.

According to the principle of harmonious dimensions, the qualitative distribution model of the internal pressure on elbow pipes were determined; Through FLUENT numerical simulation, the internal pressure were given under 96 kinds of gas fluid conditions; By analyzing the variation of the internal pressure with flow and geometrical parameters, the variation of the internal pressure distribution within the elbow pipes has been studied; By means of 1stOpt nonlinear fitting package, the formula of three-dimensional internal pressure distribution was determined; Compared with the numerical results, the maximum relative error is 0.012%. The formula provides theoretical bases for strength check, the transport pipeline and wall thickness design of the high pressure, high velocity elbow.

Using ANSYS software comes with parametric design language APDL, developed a square pyramid partial double layer of Schwedler spherical reticulated shell parametric design macro program; achieved this kind of spherical shell parametric modeling with the given shell span S, vector high F, the thickness (height) of the pyramid, ring copies of the symmetric region Kn and radial nodes laps Nx. Analyzed the static performance of the spherical reticulated shell under different structural parameters, studied the displacement of the structure and the distribution of the stress change with macroscopic geometric parameter change rule. Analysis results of eight kinds of conditions showed that the square pyramid partial double layer of Schwedler spherical reticulated shell has good mechanical performance. The result of the analysis provides a theoretical basis for the relevant engineering design.

Under the background of low-carbon economy, the researchers analyzed the situation of the development and utilization of mineral resources in West China, and the existing problems. By comparing industrial organization models and synthetically efficient analysis of different organization models of production for resources industries, ways and countermeasures to the ecological development for the mineral resources industries in West China were put forward, in terms of the transformation of organization models of industrial clusters, integration of industrial cycle organization models, reconstruction of industrial ecology organization models and so on.

Heteropolyanion substituted layered double hydroxide were synthesized and used as catalysts for oxidative desulfurization in simulated fuel oil (dibenzothiophene (DBT) inn-octane) or diesel. The catalysts are recoverable and operate with high conversion efficiency under mild conditions of atmospheric pressure and 60 °C in a biphasic system using peroxide hydrogen as oxidant and acetonitrile as extractant. Zn9Al3(OH)24PW12O40(ZnAlPW), Zn9Al3(OH)24PMo12O40(ZnAlPMo) and Zn12Al4(OH)32SiW12O40(ZnAlSiW) were identified as effective catalysts for the oxidative removal of DBT from simulated fuel oil. The order of decreasing catalytic activity is ZnAlPMo > ZnAlPW > ZnAlSiW. The results show that the best catalysts, ZnAlPMo, attained to a DBT conversion of nearly 100%. All the catalysts can be readily recycled by filtration after use. The recoverable ZnAlPMo retains nearly the same catalytic activity as the fresh. ZnAlPMo was found to exhibit an ideal catalytic activity in oxidative desulfurization of diesel with a total sulfur removal rate of 91.8%.

In order to study the vibration and seismic performance of K8 triangular cone partial double layer spherical reticulated shell and analyze the factors that impact its self-vibration and seismic performance, this paper used parametric design language APDL of ANSYS to establish the shell model,then used 3D El-Centro seismic waves to analyze the influencing factors of its self-vibration and seismic performance by changing the ratio of rise to span, the ratio of thickness to span, bar section area and other parameters. Therefore this paper get some conclusions with engineering significance.

By using ANSYS software parameter of design language APDL the parametric design macro program of two types of equilateral triangle cylindrical lattice shell are given with the given parameters of the span S, the length L, the rise F, the number of lattice in the span direction the model of equilateral triangle cylindrical lattice shell would be obtain easily. Thus offer convenience for force analysis and optimization design about this structure. The force analysis of the two type equilateral triangle cylindrical lattice shell is done. By contrast with the five typical cylindrical shells, the two type equilateral triangle cylindrical lattice shell has good rigidity and strength, and has application value in practice engineering.

The campus network is to provide broadband multimedia network teaching,scientific research and comprehensive information service for teachers and students. With the popularization of campus network and function of continuous improvement,to the campus network security threats are also more and more,through the core switch in campus network by using various safety strategies,including NAT,VLAN,Access-List,effectively guarantee the safety of the campus network.

Compared the principle and application effect of non-contact measuring data collecting method of intake ports: the nondestructive scanning method and laser scanning method. A intake port was developed for a four-valve diesel engine with reverse engineering technology, and different core boxes of intake port were made respectively by different measureing and manufacturing method, and were investigated in the steady-flow test with the original cylinder head of the diesel engine. The results show that the performance of the metal core box based on laser scanning is consistent with the original cylinder head. Compared with the epoxy resin core box based on nondestructive scanning method, the metal core box based on laser scanning can satisfy the requirement of development of intake port.

Mg-doped LaFeO3 thin film and Mg, Cr-doped La0.5Sr0.5FeO3 thin films were prepared by the sol-gel method. The change rules of structure and dielectric properties of the films were studied by XRD, SEM, and Agilent. The dielectric properties of La0.5Sr0.5FeO3 and LaFeO3 films were improved by the substitute with Mg and Cr. The doping amount of Mg and Cr for the optimal dielectric properties of La0.5Sr0.5FeO3 films is 45mol%, 25mol%, respectively, and for LaFeO3, the doping amount of Mg is 8mol%. The observed pure perovskite phase of the doped films suggested the dissolution of Mn, Co, and Ni in La0.5Sr0.5FeO3 crystal lattice. Mg and Cr were integrate in the lattice of LaFeO3 and La0.5Sr0.5FeO3, and mineral is single perovskite phase. The surface of the film is smooth, without cracks, surface grain size distribution and had uniform grain size.

Morphotropic phase boundary (MPB) composition, KNaNbO3-0.052LiSbO3(KNN-LS) was synthesized by sol-gel method at this experiment. Sb2O3 was used as economic Sb source and the final dried gel was calcined at 650°C for 2h to obtain white nanopowder. The sintering experiment was carried out at the temperature range of 980°C-1130°C, and perovskite phase structure could be observed apparently below 1080°C. When the temperature reached 1080°C and above, the second phase Na3LiNb6O17 appeared meanwhile the piezoelectric coefficient (d33) decreased quickly. Its proven that fine-grained particles and low sintering temperature could be obtained in sol-gel route.

According to the switch transients problem existing in the Hybrid Actuation System (HAS), a multi-mode switching control system was proposed. This control system, based on the system feedback correction theory, can cater to the demands of dynamic characteristics and switch transients. To start with, the mathematical model of HAS was established on the basic of HASs operating principle, and the HAS is composed of Hydraulic Servo Actuator (HSA) and Electro-Hydrostatic Actuator (EHA). Further, the different operating modes controller are hammered out by employed the PID feedback correction control, and the acceleration feedback controller is added to the switched system to decreasing the switch transients. Finally, simulation results demonstrate the system is precise in tracking displacement signal, and it is validity of mitigating the switch transients by used method of feedback correction.

Certificate-based encryption is a new paradigm which was introduced by Gentry to address the complex public key revocation problem in traditional public key cryptosystems. It represents an interesting and potentially useful balance between traditional public-key encryption and identity-based encryption. In this paper, we introduce the notion of hierarchical certificate-based encryption that preserves the advantages of certificate-based encryption such as implicit certificate and key-escrow free while inheriting the properties of hierarchical identity-based encryption. We formalize the definition of hierarchical certificate-based encryption and also propose a concrete hierarchical certificate-based encryption scheme that is chosen-ciphertext secure under the hardness of bilinear Diffie-Hellman problem in the random oracle model.

A major concern in aerial video surveillance today is to improve the processing speed continuously. This work introduces a joint visual constraints method for high speed aerial video stitching. To obtain real-time and accurate performance, we first select the compact and efficient ORB (Oriented FAST and Rotated BRIEF) for fast local feature description and matching, and then adopt the dynamic key frame based video stitching framework to reduce the accumulation errors. To further achieve high speed performance, we improve the above framework by fusing spatial and temporal constraints of ORB keypoints during online stitching, and increase the processing speed to 150 fps successfully. The results with public available UAV datasets demonstrate the superiority of joint constraints.

Hexagonal grid cylindrical latticed shell structure is proposed, due to honeycomb structure (although the hexagon structure) is the most effective structure on save the building materials. As a result of the shell structure always with numerous bars, the distribution of internal force and the design of bars often rely on many parameters, likes the span of the structure, the rise-span ratio of the structure, the size of mesh etc., the large scaled finite element software ANSYS parametric design language ANSYS Parametric Design Language (APDL) be used to establish the model of hexagonal grid single-layer cylindrical reticulated shell. The optimization design also was done to found whether the model was a feasibility one. The analysis process shows that the parametric design method provides great convenience for the design of the structure.

The structure and working principle of the hydraulic steering by-wire system were described, and the optimal control algorithm of the system was obtained by the comparative analysis. Fuzzy control was chosen as the steering systems control algorithm, and it can realize closed-loop control of the front wheel corner. Matlab/Simulink was used for the simulation of the entire system. The simulation got the fuel tank displacements response curve, and verified the accuracy of the system design, which can provide a reference to the design of tractors steering system. Bench test was proposed to verify the accuracy of the system. The bench test results showed that the hydraulic steering by-wire controller can realize systems steering function well, and the system improved the control accuracy and fast response characteristics.

According to the rules of six typical spherical reticulated shell nodes, the modeling method and the design macro program is developed for the nodes and the bars of six typical semi-outdoor spherical reticulated shell structures by using the ANSYS parametric design language APDL, so as to achieve the parametric design of six typical semi-outdoor spherical reticulated shells. The modeling design examples indicate that it's convenient to achieve the parametric modeling and design of semi-outdoor shell with given span S, rise high F, number of hoop symmetry areas kn, radial node cycles of whole structure nx and the upper removed laps ns, which provides big convenience for the force analysis and the optimization scheme comparison of semi-outdoor spherical lattice shells with varied types and geometric parameters.

The five double layer cylinder reticulated shells (single diagonal rod cylinder reticulated shell, Foeppl cylinder reticulated shell, double diagonal rod cylinder reticulated shell, lamella cylinder reticulated shell and three way grid of cylinder reticulated shell) are developed by adopting the upper and lower translation method. Five connection forms of web member (cross truss, positive four pyramidal, upend four pyramidal, evacuated positive four pyramidal, evacuated upend four pyramidal) and the methods of the node generation and element connection are established in the cylindrical coordinate system. By using the ANSYS parametric design language APDL, the corresponding parametric design macro program is developed so that the five double-layer cylindrical shells can be parametrically modeled under the given parameters such as shell type, shell span D, rise high t, thickness h, length L and number of grids m and n, etc. Examples prove that this method is simple, efficient and pragmatic, which provides great convenience for the force analysis and the optimization scheme comparison.

The processes of the fuild through the elbow pipe under different conditions are simulated by the FEM software named FLUENT. Then, the effects of varied parameters on the distribution of pressure on inner suface of elbow pipe are studied with dimensionless analysis method. Finally, a distribution model of pressure at the the minimum life section where the axial angle α is 45°, degree of curvature k=R/d, circle angle β, fluid density ρ, fluid outlet pressure P0 and fluid velocity v is built and verified by fitting the simulation data. The research conclusion lays the groundwork for strength check and structural design of the elbow pipe

Because mostly used variable speed wind turbines based on doubly fed induction generator (DFIG) do not provide with transient voltage support capability under fault conditions, the security and stability of grid is influenced by wind farms integration in the case of severe short circuit fault contingency occurred on the grid side. The modified power converter controller model with transient voltage support capability and pitch control model used for post-fault stability control are implemented in DIgSILENT/PowerFactory. The models validation and the contribution to transient voltage stability enhancement are verified by power system simulation containing large wind farms. From simulation results, it can be illustrated that modified power converter controller with transient voltage support capability can provide dynamic reactive power to support grid voltage recovery and the modified pitch control model can reduce mechanical power , preventing wind turbines from over-speeding and also providing more reactive power generation stability for the power converter controller in the duration of power system large disturbance. The conclusion is presented that the control strategy can effectively improve the transient voltage stability of the gird.

In order to determine the fire area resistance and its characteristics in the process of tunnel fire accurately,fire area resistance calculation equation is established according to the compressible wind energy balance equation, that fire area resistance mainly depends on the wind temperature and dynamic change through the fire areaand air volume as well.Experiment determined the total ventilation resistance and fire area resistance at various points in the process of coal combustion in the roadway with the help of a similar experiment device.Analysis obtained, fire area resistance will appear from zero to big, than from big to zero with the development, stable combustion and attenuation of the fire; fire area resistance can reach the maximum 71.5 Pa when the air temperature and volume increased to 351.6K and 0.419 m3/s.

On the basis of the experiments, hot pushing pipe bending process on ox horn core bar is simulated by using MSC.Marc software and orthogonal testing method. Simulations and optimization of sixteen possible combinations of the three parameters T, v and f are carried out with orthogonal testing method L16(43). Aimed at the uniform wall-thickness of elbow pipes, the influence regularity and the influence degree of heating temperature T, pushing speed v and friction coefficient f on the pipe quality are analyzed. The best parameter of hot pushing pipe bending process are T=750 °C, v=4 mm/s and f=0.16.

A water quality model large-scale Non-Point Source pollution model was widely applied to deal with nonpoint source pollution in China. In this paper, the model was improved by adjusting the time step. The time scale of the solution module was modified to one day and half a month for the adhesion module. The Non-Point Source pollution loads in Haikou in 2008 were calculated by using the new model. The results show that the major pollutants of Haikou were the COD from large and small livestock, and the soluble pollution loads were much larger than the adsorbed pollution loads. Pollution loads of all types showed evident temporal and spatial trends. Moreover, the NPS pollution loads were dramatically larger in the flood season than in dry season. The distribution of average load of Non-Point Source pollution in Haikou originated from different areas showed significant spatial differences.

the paper introduces Cisco AAA certification, through the simulation practical the certification, it is a set of mechanisms using on the existing network, which can use user’s identifications, the net types, and the network equipment security comprehensively into providing the flexible delegated strategy for users, also taking the user operating records into ACS server. So as to the management of network safety by setting configuration password and using RADIUS or TACACS+server, besides these it is necessary to turn on the router managing users essential protocols. And the safety IP sub-net is sure to visit and record acting. The purpose in paper is blending the certification into campus security network management, to identify and manage different users for award corresponding permissions, then makes campuses network much more Systematic and safe.

This text has introduced a kind of design process on the basis of teaching administrative system facing target's modeling. During the design, we have used unified modeling language UML and modeling tool Rational Rose2002 Enterprise Edition analysis to conduct overall analysis and design. Meanwhile, we used Rose Delphi Link to produce the frame code of Delphies at the same time, so as to greatly improve the expansibility of the administrative system and the reusability of module .

the paper presents a brand new system about mine locomotive monitoring and management based on wireless video technology, which has high communication rate, strong anti-disturbance capability, more secret, longer distance and object recognizing on high speed moving and other technology advantages. These make the system suit for complex and harsh working environment underground. It uses optical cable to translate data for saving electric cable and decreasing installation and maintenance workload. The full-course real-time supervising improves the efficient of locomotive transportation management and makes locomotive schedule much more convenience.

In order to know the coating effect and application of color ink-jet paper, the coating formula and printing quality of ink-jet paper were deeply studied. First of all, the coating liquid was prepared by dispersing and mixing the nanometer pigment, the adhesive and the other additives. Then the properties of ink-jet paper were tested and their surface profiles were characterized and evaluated with scanning electron microscope. Finally, the coating paper samples and the base papers were all printed with color ink-jet printer and measured with a spectrodensitometer. The study result showed that it can gain well coating and printing quality when the ratio of SiO2and TiO2is 3:1 and the content of PVA adhesive is 50%, especially paper whiteness is obviously higher than that before the coating.

Various kinds of household appliances have been widely deployed in the low-voltage grid. They inject conducted noise into the power line system, which may cause a detrimental effect on the Power-line Communications (PLC) channel. This paper examines a new measurement method of conducted Electromagnetic Interference (EMI) on the PLC channel. The proposed method is to facilitate the noise characteristic research, which overcomes the potential difficulties when the measurement is performed according to CISPR 16-2-1. In particular, taking the hairdryer as an example, the conducted noises when the motor is deemed as the noise source are measured by employing the presented method. Moreover, this paper also analyzes the conducted noise of the hairdryer both in the time domain and in the frequency domain, and interprets the noise generating mechanisms with the working principle of the motor in detail. The central issue in all these studies is to research the conducted electromagnetic noise characteristics on the PLC channel.

This work presents the design and implementation of drivers fatigue detection system based on FPGA to prevent car accidents. According to the bright pupil phenomenon, which is produced by the retina when the incident lights wavelength is 850 nm, drivers eyes can be detected easily. While acquiring the real-time video of the drivers face by camera, the system accomplishes the detection of drivers eyes by using a simplified PCNN (pulse coupled neural network) and the computation of the PERCLOS (Percentage of Eye Closure) to decide whether the driver is fatigue or not. All the designing and accomplishments of the system are based on the FPGA platform Xilinx Virtex Pro Development Board. During the experiments, the system has the ability of processing 25 frames/sec, which is the speed of collection of the used camera. Also, the fatigue detection system has good stability and accuracy.

Vibration control is important for the safe and stable operation of generator units. The vibration transfer characteristics of small- and medium-sized turbo generators are different from those of large capacity units due to differences in mechanical structures. We point out that the vibration on small- and medium-sized turbo generators propagates through their foundation from one bearing to another, rather than through the shafting. In particular, transmission of horizontal vibration measured on bearings is found to be more significant compared with vertical and axial vibration due to the height of the bearing pedestal. We demonstrate through three successful diagnostic practices the process of vibration transmission on small and medium-sized turbo generators. The present work can serve as a reference for the same type of unit as well as other similarly structured rotating machineries.

In this paper the effects of compound sulfur-fixing agents and compound additives on the sulfur-fixing efficiency were discussed. Thermogravimetric Analysis was used to study the influence of sulfur-fixing agent and additives on the combustion performance. Besides, X-ray fluorescence was applied to research sulfur-fixing mechanism. The results show that, the best sulfur-fixing efficiency was 78.95%, when the ratio of Ca/S was 2.0, experimental temperature was 1000°C, burning time was 20min, the compound sulfur-fixing agents were 80% carbide slag and 20% wastes, the compound additives were 2% iron additives, 6% aluminum additives, 4% sodium additives, 5% silicon additives. The effects of the four additives on the sulfur-fixing efficiency were Al＞Fe＞Si＞Na.

Elbows of oil pipeline were adopted to study the effect of the variation of the geometric parameters of the inner diameter d, bending degree k =R/d and bending angle A on the distribution regularity of the inner surface pressure, with the simulation by the FLUENT software. Based on the analysis, the pressure computational formula on the dangerous cross section α=45° was built by using 1stOpt software. The values computed by the formula agree well with the ones simulated by FLUENT, which lays the groundwork for strength check and structural design of the elbow pipe.

The problem of a scarce consideration of screw pump well pump diagram graphic information affects the diagnosis technology promotion and utilization to some extent. The method, through which the shape features in pump diagram graphic state and parameter information been directly extracted, and then a method based on Mathematical morphology is also presented. Mathematical morphology filters of open-close operator to realize graphics edge texture feature extraction. After feature digitized, using a probabilistic neural network to identify fault. The practical application shows the classification accuracy rate is above 90%.

The paper introduces a design of wireless data acquisition and transmission terminal which takes Micro-controller ADuC848 as control center, combining with the Huawei GPRS/GSM wireless transmission module GTM900C. On the server computer designed GPRS data receiving software based on TCP/IP protocol. This system has succeeded in data acquisition and transmission in remote field. This paper describes the general scheme of the system from both hardware and software aspects and concretely introduces the method of remote data acquisition and transmission system, the final operation results of system are also given.

According to the variation of the flow parameters of the flow velocity v, outlet pressure P0 and fluid density ρ by using the FLUENT software, the influencing regularity of the distribution of the inner surface pressure in elbow pipe was analyzed. Based on the study, the pressure computational formula for 90 degree elbow pipe on the characteristic section α=45° was built. The research conclusion lays the groundwork for strength check and structural design of the elbow pipe.

The comparative pilot experiments were conducted by using two medium-scale test equipments. All the raw water was taken from upstream of Huangpu River in Shanghai, China. The turbidity is studied for the output water of pre-ozonation process compared with that of pre-chlorination process. It was found that the effects of turbidity removal by pre-ozonation process were significantly better than that of pre-chlorination process in both the sedimentation tanks effluent and filters effluent.

Based on the structure features of double reticulated domes, a method for node generation and element connection of six typical double reticulated domes was produced. A macro program was designed by using ANSYS Parametric Design Language (APDL). The six typical double reticulated dome modeling was produced under given parameters such as span, rise high, double thickness, grid number in circular and radial direction. It is proved by several examples that this method is simple, efficient and possible. It can be easily used to analyze the internal force and optimized design in shell structures.

The big differences of the texture and shapes in the same type and certain similarities among heterogeneous types result in the difficult classification of fabric defects. Compared with traditional global statistical method, we put up a new solution, which makes use of the fabric defect local region features to keep the defect property and defect classification by Support Vector Machines (SVM). Based on small-samples learning machine of SVM, we obtain a good performance of less computational load and high recognition rate.

Based on the geometric characteristics of developed cylinder shell, five methods of node generation and element connection were proposed in the cylindrical coordinate system. The corresponding macro programmers were made by means of ANSYS software parametric design language. Five developed cylindrical shell parametric modelings were achieved under the conditions of the given shell types, span, vector height, length, the grid number of length wise direction and cross wise direction. Applied examples show that this parametric modeling method and programmers are simple, efficient and useful, which facilitate the force analysis and optimizing design under different types and parameter by means of ANSYS software.

Based on the structure features of double primary ribs reticulated domes, a method for node generation and element connection of six typical double primary ribs reticulated domes was produced in spherical coordinate system. A macro program was designed by using ANSYS Parametric Design Language (APDL). This six typical double primary ribs reticulated dome modeling was realized under given parameters such as span, rise high, double primary ribs thickness, grid number in circular and radial direction. It is proved by several examples that this method is simple, efficient and possible. It can be easily used to analyze the internal force and optimized design in shell structures.

Neighborhood communication space is the basic and indispensable place of information exchange and emotional communication for the residents. Good neighborhood communication space can enhance the sense of identity and intimacy among the residents which is significant to create a livable community. This paper hopes to make some useful explorations of the planning of livable community by analyzing the neighborhood communication space in the modern livable community.

Transformation method provides an efficient way to control wave propagation by materials. Recently, this method has been extended to control elastic waves in solids in case of high frequency or small material gradient. An important device in practice, elastodynamic beam bender with isotropic materials, can be designed by this method. In this paper, we will explore some characteristics of the isotropic elastodynamic beam bender and show that it can be used as bricks to guide the solid elastic beam to arbitrary angles, providing more flexibility in engineering practices. Examples are conceived and validated by numerical simulations.

In this paper, energy consumption evaluation index system of the container terminal logistics system is briefly studied. Energy consumption is divided into two parts as dynamic and static energy consumption. Then an effective energy consumption evaluation model of container terminal logistics system is established.