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Based on the concept of agricultural total factor efficiency and the concept of total factor energy efficiency, this paper uses the DEA model based on input method to measure the total factor water resource efficiency. In the process of calculation, some factors of production, such as GDP, labor force and so on, are considered in order to make up the traditional method for the deficiency of considering single factor of water resources. This paper calculates the total factor water resources efficiency in 31 provinces of China in the year of 2009 and 2012, and analyses the spatial distribution and the change of water resources efficiency. The results indicate that the absolute number and relative proportion of agricultural water use are important influence factors of water resources efficiency.

A biodegradable Mg-4Zn-0.6Zr alloy with different content of strontium (Sr) was prepared and studied for orthopedic applications biomaterials. The effects of Sr on the microstructure and corrosion degradation of the as-cast Mg-4Zn-0.6Zr-xSr (ZK40xSr) alloys were investigated. The optical micrograph (OM) observation, energy-dispersive spectrometer (EDS), X-ray diffractometer (XRD) and immersion test were used. The grain size of Mg-4Zn-0.6Zr alloys was reduced obviously with the addition of Sr. The excess of Sr would lead to grain size increasing and grain boundaries widening. The possible presence of the following constituent phases in the grain boundaries: α-Mg, Mg17Sr2, MgZn, ZnxSry binary and MgxZnySrz ternary phase. The formation of ZnxSry and MgxZnySrz phase owed to the larger difference of electronegativity values of Zn and Sr. The immersion tests indicated that the average corrosion rate of the as-cast ZK40xSr alloys increased with the increase of Sr content. It contributed to the micro-galvanic corrosion between the α-Mg with the continuous distribution of grain boundaries precipitates.

This article provides a comprehensive analysis on an explosion of welded insulted cylinder for liquid oxygen during unloading occurred in a company in 2014. The possible causes of the accidents are deduced through analysis on the operating principles of welded insulated cylinders, explosion energy estimation and related performance tests. On the basis of the accident analysis, this article presents that great importance should be attached to the safety in filling of welded insulated cylinders, replacement prior to filling and regular inspections, and also indicates the gap in currently existing rules on periodic examinations of welded insulated cylinders in China.

In this paper, the effect of anhydrite on the cement-based self-leveling mortar performance was studied. The construction operation of mortar and its mechanical property testing were based on the standard JC/T 981-2005. The results showed that the anhydrite played a significant role on the performance of compressive strength and flexural strength. Furthermore, the best performance of dimensional change rate, abrasion resistance and adhesive strength was obtained with 8% anhydrite content. This study has guiding significance for the construction and application of cement-based self-leveling mortar.

The powder sintering process is adopted for preparing the porous Cu-35Ni-15Al alloy.The microstructure was observed by using scanning electron microscopy. Mechanical properties were tested and compared at different temperatures and stress conditions. This thesis also studied the impact of stress on creep properties of Cu-35Ni-15Al alloy,The results show there are roughly three deformation stages of high temperature compression deformation.The microscopic deformation was mainly the curved, collapsed and folded holes.The creep resistance performance of porous Cu-35Ni-15Al alloys weakens with the increasing pressure.

Wheel/rail rolling contact fatigue is one of the most complicated and urgent problems of the key techniques of railway system, and seriously influences the operational safety. A finite element (FE) model of wheel/rail rolling contact of curve negotiation is established based on the single-layer track dynamic model, which is considering the effect of rail straightening residual stress, the actual wheel tread and the elastic support of rail track bed. The nominal stress approach is applied to study the rail rolling contact fatigue life with two residual stress-state conditions. Results show that the distribution of rolling contact fatigue life on the surface of rail head presents obvious peaks and troughs with a specific wavelength in the longitudinal direction, which are approximately corresponding to the peaks and troughs of the contact force. Meanwhile, the rail rolling contact fatigue life firstly increases and then decreases while the running speed varying from 150 to 250 km/h, and decreases while the axle load varying from 13 to 17 tonnes which do not fully show a linear law.

In this article, aiming at the flaws in traditional Mean-shift algorithm for object tracking, we improve the traditional algorithm based on the fusion of Grayscale and Gradient using a layered approach. This algorithm can describe the object more exactly by using Grayscale and Gradient dual tracking factors in object tracking; And it makes up the flaws in traditional Mean-shift algorithm for information expression of spatial location by using layered approach and spatial histogram in describing object. Experimental results show that modified Mean-shift algorithm is superior to traditional Mean-shift algorithm in object tracking with better Robustness and precision, and it can suit deformation, spin, interference, shield and more complex tracking problems.

This paper presents theoretical investigations of vibration and sound radiation responses of laminated plates in thermal environments. Static thermal stresses are taken into account to describe the stress state of the vibrating plate. First-order shear deformation theory and von Karman nonlinear strain displacement relationship are used to represent the dynamic deformation. And then, governing equations are obtained with Hamilton’s principle. Response characters are studied in both the pre and post-buckling ranges. Results show that the bending stiffness of the heated plate drops in the pre-buckling range and increases after thermal buckling occurs. Thermal environment preforms as two opposite effects before and after buckling. Amplitudes of vibration and radiated sound of the thermal post-buckled plates show opposite variation trends.

In the paper, we research on a preparatory electro-hydraulic actuator product, using the simulation software AMESim to research work to analyze the system performance. We research position in closed loop servo actuator system, generally only considered the requirements of the position. While the speed trajectory and precision control did not do high demand. The position of the system by increasing the speed control strategy module, the system meets the requirements of the position. At the same time, we can achieve speeds start-up operation, stable operation and stopped operation of the three phases according to the requirement following a given trajectory; simultaneously can carry out detailed system performance analysis and research. Simulation results show that increasing position speed control strategy module of the system get very good effect. It can realize the speed control system and satisfy the system output displacement and speed steady-state performance and dynamic response.

This paper reports the results of an ongoing research which was set up to investigate the effect of microstructures on the activity of different deformation mechanisms and the resulting mechanical behavior of the Ti-10V-2Fe-3Al alloy. Various microstructures were established by different heat treatments. Depending on the microstructures, obvious differences in the mechanical properties of this alloy were obtained. It is shown that in α+β phase field solution treatment conditions, with the increase of heating time, the fraction of globular α phase decreases, the compression strength increases. In β+(α+β) phase field solution treatment conditions, with the increase of heating time, alloys have opposite trends. In aging conditions, the microstructure and mechanical property do not change apparently with the aging time. The microstructure of the α phase and β phase has a great influence on the fractographic morphology.

Dual-site doped half-Heusler ZrNiSn alloys were prepared by arc melting. In order to diminish thermal conductivity of the alloys, as-casted ingots were sintered again by spark plasma sintering (SPS) technique after pulverizing and milling for several different periods of time. The electrical resistivity, thermoelectric powers and thermal conductivity of the sintered samples were measured from 4 to 350 K. A drastic reduction of thermal conductivity was obtained. The thermal conductivity decreased from about 17 to 1.5 W/K m and from 8.8 to 6.3 W/K m at 30 and 350 K, respectively. The dimensionless figure of merit of the half-Heusler alloys increased about 10%

In order to deeply reveal the high temperature stability of asphalt mixture, rutting test was implemented to evaluate the high temperature stability of asphalt mixture, and the evaluation index is dynamic stability. The effect of asphalt type, degree of compaction, gradation type and nominal maximum aggregate size on rutting test results was studied respectively. The results showed that: modified asphalt can improve the high temperature stability of asphalt mixture effectively; the anti-rutting performance of asphalt mixture reduces gradually with decrease of the degree of compaction; the anti-rutting performance of SAC-16 is greater than that of AC-16; and the anti-rutting performance of asphalt mixture is improved with increase of the nominal size of aggregate.

In order to automatically generate the railway Alignment, an alignment optimization method based on minimum cost is proposed. Firstly, an optimization model based on the coupling constraints of line-structure-environment is established, in which the comprehensive cost of engineering, operations, and the environment is considered as the objective function. Then based on the regular grids, the Geographic Information Data can be obtained and the comprehensive cost of the connection between two grids can be calculated. At last, the optimal connection between the grids is analyzed under the angle constraint and elevation constraint, thus the optimal alignment can be generated by the connection of grids.

Based on the Rayleigh-Sommerfeld diffraction integrals, the closed-form expression of nonparaxial cosine-squared Gaussian beams in free space is derived. The power in the bucket (PIB) of nonparaxial regime is introduced to characterize the beam quality of nonparaxial beams in the far field. It is found that the intensity and PIB of nonparaxial cosine-squared Gaussian beams depends onfparameter, decentered parameter, and the PIB is additionally depends on the bucket’s size taken. For a given bucket’s size, the smaller decentered parameter andfparameter result in the better power focusability in the far field and the better beam quality.

As computer vision technology been developing, while camera becomes standard configuration for personal computer (PC) and computer calculating speed becomes faster and faster, Computer vision have been more popular used in people daily life, people can use computer as an eye to see and recognize the real world, In this paper, we will present a novel electronic head mouse control system which is based on human facial feature. Our system firstly detect human face from the input image by using face features in YUV Color model, and then for face candidate, use reversed relationship information between U and V cluster of face feature to detect mouth position. Then in the detected mouth region, mouth lip region gray level is usually lower than other region but V level higher than others, so we can reversal mouth region gray level and use associated threshold method to pick up mouth region pixels. Relationship between mouth position and face region boundary can be used to confirm human head rotation angles correspond to camera, which can be used to control mouse movement in screen. Then throughing analysising mouth shape information, we can confirm mouth motion command for mouse. We have simulated our algorithm on windows XP system to evaluate the effect of our algorithm. The simulation result showed that our algorithm can represent a good effect for head mouse control system.

The extreme weather (such as rain, snow, fog etc.) will cause many traffic hidden trouble points, bring huge influence to traffic safety [1]. The paper is based on the logic relation between many monitoring data and traffic hidden trouble points, build the early warning index system of traffic hidden trouble points in extreme weather, and better serve for traffic security and public travel.

The experiments were carried out on the remolded soil to study the change law of the soil properties with the numbers of freezing and thawing cycles. It aims at simulating the effect of natural environmental factors on the mechanical performances artificial filling roadbed in Songbei region. After the soil sample was compacted in the optimum moisture content, and undergone limited numbers of freezing and thawing cycles, physical and mechanical properties were measured respectively. The experimental results indicated distinct change trend on physical and mechanical properties of soil after limited numbers of freeze-thaw cycle to confirm that the fillings was susceptible of temperature and moisture in this region.

According to the detection method of "Polycarboxylates high performance water reducing admixture"(JG/T223-2007), the different concrete mix ratio with different binder systems were designed to test the air-entraining content and compressive strength ratio for 3days of the HSP-V and PCA-II polycarboxylate superplasticizer. The results show that the mineral admixtures can reduce the air-entraining content of the HSP-V and PCA-II polycarboxylate superplasticizer, and lead to the compressive strength ratio for 3 days improved. Therefore mineral admixture on polycarboxylate superplasticizer should be fully considered, in order to adapt to the needs of the practical engineering.

This paper presents studies on the theories aimed at using the technologies of Internet of Things in the domain of the emergency management of ponded water on road surface. It first introduces an emergency management model based on the Internet of Things to solve the problem of ponded water on road surface. It discusses a few critical technologies related to this model including monitoring the condition of the ponded water on road surface and the condition of the traffic simultaneously, the framework of data interfacing using multiple sources including the heterogeneous data, the analysis of traffic jam spreading pattern at critical locations of ponded water, comprehensive information analysis, and comprehensive demonstrations of monitoring based on GIS. In the end it gives our expectation about the future and development direction of using the technologies of Internet of Things in city traffic emergency management.

Steering axle and steering knuckle arm often appear craze problem within its service life. In this paper, the structure of a car steering knuckle was investigated using finite element program at uneven road surface conditions, emergency braking condition and sideslip conditions under the condition of full load. The results show that the joint shaft neck and adjacent shoulder of steering knuckle are the easiest to be damaged. At the same time, the steering knuckle meets the strength requirement under various conditions. Secondly, use the theory of fatigue to analysis and consider parts material fatigue properties, mean stress and other factors. Steering knuckle fatigue simulations use the ANSYS software to estimate the fatigue life. Under the condition of loop 900000 times, there was no damage in steering knuckle. According to the analysis results, reduce stress concentration and the surface roughness for steering knuckle improvement measures are proposed

A two-dimensional direction-of-arrival estimation of quasi-stationary signals via tensor modeling using an L-shape array is presented in this paper. This is a novel approach which is an extension of Khatri-Rao subspace approach, denoted by extended Khatri-Rao subspace approach. The proposed approach can work even when number of sensors is less than number of sources. To utilize the multilinear algebra, direction of arrival (DOA) is developed in the multidimensional sense. The effectiveness of the proposed method is verified through numerical examples.

The new-generation smart substation, which is included in the index of annually key construction project of The STATE GRID Corporation of China, featuring deep integration of primary and secondary equipment, although still in the pilot construction phase, symbolizes the future and trend of the development of smart substation.In this paper, a complete scheme of test technology and method on dynamic simulation, single device function test, abnormal SV test is presented based on the integration, on-site and substation-wide characteristics of the equipment and the unique feature of construction and commission phase of new-generation smart substation as well as the previous experience of test and operation on both smart and traditional substation.This paper concentrates on the examination method that tests the impact of abnormal SV to the protection device, enumerating all possible conditions of abnormal sampling data and corresponding test manner and methods. At last, a detailed test result on protection device from a new-generation substation that is in its final stage of commissioning is presented .

By analyzing two Polycarboxylate cement admixture of different polymerization process adaptability, the cement paste experiment is carried out to show the influence of Polycarboxylate superplasticizer, slump agent and the cement synthesis process on cement adaptability. Through orthogonal design method, result is drawn from the comparison of the influence of initial liquidity and an hour liquidity under different conditions,which is base on treating Polymeric acid process parameters as effecting factor within a certain range. It is shown that the preferably optimized process parameters of Polycarboxylic acid exist in the same kind of cement.The system error caused by the impact of cement composition is indicated in different kinds of cement.The adaptability of Polycarboxylic acid cement admixture of the mother liquor is available in the process optimization of the parameters.

This paper presents the curve arc angle measurement control method of ship profiles CNC cold bending forming based on cubic parameter spline. The profile forming method, the approximate arc cubic parameter spline based on accumulative chord length and the principle of arc angle measurement control method are also given clearly. Experiments have been carried out to verify this method.

Based on the propagation law of partially coherent beams, the analytical expression of the beam width, waist positions and the far-field divergence angle of partially coherent sinh-Gaussian (ShG) beams through an astigmatic lens were derived. The effect of astigmatism and spatial coherence parameter on the beam parameters was mainly analyzed. It is found that the beam width depends on the astigmatic coefficient, spatial coherence parameter, decentered parameter, fresnel number and propagation distance in general. The astigmatism results in a difference between the beam widths, waist positions and far-field divergence angles in thexandydirections.

The oscillating hydrofoil current generation device utilizes a typical movement type, which can transform energy effectively from current. The study shows that the geometrical profile of blades is the fundamental factor to the efficiency. In order to resolve the problem, this paper adapt the BEM(blade elements momentum) theory, which plays an important role in resolving the turbine blade design. Use the MATLAB to calculate of the constraint equations, then translate the coordinates which has got through the calculation to Solidworks which is a convenient 3D modeling soft. In the end we will give an example which has modeled 3-D hydrofoil BEM theory.

Introduce the current development of distributed generation, the structure and protection configuration of existing distribution network, and the fault current insert of different kinds of distributed generation was introduced. Through the distribution network in different positions to join distributed generation, the influence of the join of distributed generation on the existing protection of distribution network was analyzed, which included the serious interference to the sensitivity and selectivity of the original protection, the refusal of line protection, the action error of non- fault line protection. The influence of distributed generation on automatic reclosing, and the effect between fuses was discussed, to some extent, and base on the discussion some appropriate countermeasures are proposed.

This article presents the dependence of porous silicon (PSi) morphology on preparation conditions and the coalition between morphology and optical properties. p-type (100) silicon wafers were etched in an electrolyte incorporating 1:1 (by volume) ethanol and aqueous solution of hydrofluoric acid (40 wt. %) at various etching current densities and times. Detailed information about evolution of PSi morphology with variation of preparation conditions was investigated by field emission scanning electron microscopy (FESEM) and atomic force microscope (AFM). The results have shown that the pore sizes of PSi are gradually increasing, and the thicknesses of PSi layer are increased with the speed of about 11-12 nm/s as the etching duration increased. Addition, the optimal photoluminescence of PSi is achieved in room temperature with the strongest photoluminescence spectra when the corrosion current density was 30 mA / cm2 with 30 min etching time.

This paper presents a kind of optimum modeling method for evaluating system buckling load of plane sway frames, based on the research of the different correction coefficient β. The buckling load of plane sway frames was calculated by using the optimized method, and the results were compared with those of the ANSYS. It is verified that the simplicity, accuracy and applicability of the method.

Blades are an important part of aviation engine, its manufacturing compliance seriously affect the performance of the engine. Blades tend to be free-form surface modeling, which makes it extremely difficult to measurement. Since no probe radius compensation, high efficiency, non-contact optical measurement methods get more and more attention, but the inspection uncertainty of optical measurement is usually between 30um to 50um .To reduces the optical non-contact measurement uncertainty, this paper presents an Optical-triangulation-based method for measurement of blade sections. There is a data optimization process in the method, and this feature makes the proposed method can obtain better measurement results. At last, some experiments demonstrate the effectiveness of this method.

Setting up a model for the structural finite element, there are inevitably differences between the model and the real bridge .To make the model accurate it is necessary to update the model by using static performance results. In this paper, the optimization function of ANSYS is used to update the real bridge’s model. The final updated finite element model for the real beam is able to produce natural frequencies closer to the real ones .The updated is useful for the reference model to structure damage and condition assessment.

For expedite the development of high titanium heavy slag concrete, eight high titanium heavy slag high strength reinforced concrete (HTHS-HSRC) scale model column are studied. The eight HTHS-HSRC model columns are tested under reversed horizontal force. Primary experimental parameters include axial load ratio varying from 0.3 to 0.5, volumetric ratios of transverse reinforcement ranging from 1.38% to 1.56%, strength of high titanium heavy slag high strength concrete varying from 55.9 to 61.6 N/mm2 and configurations of transverse reinforcement. It is found from the test result that HTHS-HSRC model columns provides comparable seismic performance to those usually used reinforced concrete column in terms of member ductility, hysteretic and energy dissipation capacity. Primary Factors of Displacement Ductility of Model Columns are also discussed.

Combined the strength reduction method with ABAQUS, the development of the slope plastic strain of different reduction coefficient is obtained by constantly adjusting reduction coefficient to change the strength index of the soil. The reduction coefficient is obtained from the criterion of numerical convergence and displacement mutation and plastic zone breakthrough. Through the analysis and comparison with the results, the reduction coefficient by the criterion of displacement mutation is consistent with the result of the criterion of plastic zone breakthrough. The reduction coefficient is the safety coefficient of the slope, and compared and analyzed with the slope factor of limit equilibrium method Bishop. The result shows that the displacement mutation and the plastic zone breakthrough as criterions to judge the slope instability are reasonable.

Based on the State Grid Unified Application Platform as the carrier, this paper proposed an extensible access control policy. For a long time, the combination of electric power enterprise internal environment and traditional access control are very inadequate. The traditional access control model on the current unified platform access and control permissions interaction problems is almost blank. Therefore, this paper puts forward an improved access control model. The model has solves some key problems of access control in State Grid Unified Application Platform , such as specific role division, interaction between roles, permissions delivery, senior role inherited permissions unlimited scale-up, and permissions linkage.

The electrical automation technology is an advanced technology, in power plants, mainly giving play to the role of monitoring, monitoring analysis for the operation condition of the electric, also can have the data signal feedback function. Electrical automation technology is mostly play the function of monitoring, during the running of the electrical equipment, the equipment running status monitoring, through the analysis of the data and feedback, can timely find problems arising from the operation, and warning. In power plants, the use of automation technology also analysis and remote data transmission, realize the online management of equipment, improving the efficiency and quality of power plants. Electrical automation technology applications for the future development of the power plant provide a favorable environment.

According to the main characteristics of boiler operation process, part parameters of boiler and monitoring data, we not only can tease the relationship between various each physical quantity and the influence on the thermal efficiency of the boiler, but also be reasonable parameters and omit the complex on the minimal influence factors of heat loss, finally we use the counter balance calculation method to calculate heat loss, which is mainly aimed at the greatest effect of excess air coefficient, and we consider other major factors that affect the thermal efficiency of the boiler. According to the definition established physical model, the thermal efficiency of the boiler is optimized.

The effect of precipitated phases on the creep in 300s type austenitic stainless steel used in auto-tailpipe was studied. Flat tensile samples with marker scratches on the surface were strained at slow rate at 400°C. It show that the sensitized material decreased creep rate and needed more stress to generate deformation of grain boundary, suggesting Cr carbides decreased the grain boundary sliding. Thus, the resistance to SCC crack propagation could be improved. Characterizations of the tensile samples were carried out using a SEM in order to understand whether second phases can affect the creep behavior and grain boundary moving.

Query recommendation as an important tool to enhance the user search efficiency has gradually become a hotspot. In the context of big data, using the MapReduce programming model, combined with distributed minimum spanning tree algorithm, a parallel query recommended method based on MapReduce was proposed in this paper. The final results show that the efficiency of query recommendation was greatly improved through parallel computing.

With the high humidity caused by the urban microclimate, the visibility is greatly reduced due to the fog weather as well as the hazy weather formed by the accumulation of pollutant and vapor. In order to evaluate how the fog and haze weather affects outside lighting, a hazy simulation environment is introduced in this paper. An ultrasonic humidifier is used to produce droplets for fog simulation. Haze is simulated by using air blower to blow plant ashes. Transmittance of several different light sources under the simulated fog and haze conditions is shown. The results can be used to study outside lighting.

Near field communication of HF radio is in the form of surface wave propagation. The propagation loss increases with the increase distance, but there is a certain regular. In addition to this, the communication quality relates to the background noise. In order to find the relationship between them, we obtain the relationship between effective communication distance and background noise through theoretical derivation in the 2FSK system. Simulation results show that the effective communication distance is shorter with the increase of carrier frequency and the decline of the ground conductivity. And the simulation results can play a guiding role for the estimation of the HF radio’s effective communication distance.

To resolve the complexity and diversity of data exchange, the paper designed an data exchange system based on middleware technology, which realized different parsing and filtering capabilities. The method can meet the need of data exchange on the premise that network security can be guaranteed. The test results show that functionality and performance of the system meet the requirements of data isolation and exchange.

In order to solve the security problem of data’s exchange and sharing among every information island, as well as between power enterprises and power customers, we propose data security exchange of user behavior trusted: recording the data’s essential attribute and user operation in clients; data transmission can be achieved by unified security exchange protocol; servers filter data according to data’s essential attribute, user operation and configure policy, by association analysis of customers’ abnormal behavior, and check user behavior trusted. By means of analysis, data exchange of user behavior trusted can ensure data’s security exchange from data transmission, data security and user behavior trusted three aspects in heterogeneous environment.

With the development of science and technology, people's demand for energy is more and bigger, in addition to consider renewable energy. Electricity management system to study the effects of energy saving effect is also very necessary measures. Development of a complete set of monitoring, energy saving, control of intelligent power management system has very important practical significance. Finally, the paper puts forward the energy saving effect of validation, the energy saving analysis and evaluation. Based on the research of the content of this article, it finally realizes the intelligent management and scientific control of electric equipment, to solve the management of electric equipment of large power place management control is limited by geographical, effectively eliminate the phenomenon of energy waste. This system has good scalability can be slightly modified to meet more big power.

With the sub-module number and scale growing on, the whole control system of MMC (Modular Multilevel Converter) tends to be much more complicated because of the cascade structure, which also intensifies the pressure of the converter main controller. To distribute the converter main controller’s task, the design of sub-module tenders itself extremely important. However, there is no explicit and comprehensive study on how to design the sub-module. This study, according to the characters of MMC, introduces a feasible architecture of hardware and software for the sub-module with optical communication. Each sub-module has its own independent controller and control system. That is to say, every sub-module is a complete system, which can do calculation and communication with outside. Sub-modules connect with the main controller of converter through communication using optical fibers. By adopting the optical communication, sub-modules not only can receive the control references data from the main controller, but also can send its own condition information back, which creates an interactive communication between the two sides. Additionally, through detailed experiments, the validity and feasibility of the design are demonstrated under two different control strategies.

According to the effect of vibration on stabilization performance of on-board sighting telescope, a performance test analysis method is built based on the image of sighting telescope. The article mainly studies key algorithms of image pretreatment, median filtering and template matching in the process of image processing. The result indicates that vibration has significant impact on the stabilization performance of sighting telescope, especially for continuous aiming accuracy of different target. This research provides reference for the test and evaluation for the precision of vehicle-mounted sighting telescope stabilization.

Reprogramming in lossy wireless sensor networks is a dynamic process. Dijkstra’s shortest path algorithm is used in previous work to represent the multi-hop propagation of data packets, however, it is not accurate enough to use a static model to capture the behaviors of stochastic multi-hop propagation. In this paper, we propose a stochastic multi-hop model in the analytical approach by randomly setting weight values for links between nodes. From simulations, the results of the analytical approach match that of simulations when incorporated with the stochastic multi-hop model.

The E-learning has penetrated into people's life, and has become an important learning way. Because there is no uniform development platform, which leads to resource sharing is poor; developers have to carry a lot of repeated work, so it is necessary to construct the ECP. To construct unified e-learning platform, need to consider its commonness and individuality, and e-learning home reflects the most prominent. Man-machine interface of the e-learning home is main navigation links, so this is to realize dynamic navigation as research object, designed and implemented the ECP dynamic navigation based on .NET Framework.

The market fish price is an important factor that affects the income of fishermen, so how to accurately analyze and predict the fish pricet o obtain huge profits has caught people's attention. As science advances, various price forecasting and analysis methods have come into being. How to build a prediction theories and models with relatively high success rate has been the study of many scholars over the years. With the development of artificial intelligence, neural networks have become an important tool of predicting and analyzing changes in market prices. Neural networks are important artificial intelligence technology, which have simple structures, but are able to solve complicated problems. They have strong applicability in predicting the mature index fluctuations in a short period. This paper considers some shortcomings and deficiencies the BP network prototype, which tries to use the wavelet Functions to replace the excitation function in the traditional BP algorithm on the basis of a network of neurons and then forms into WNN. We can verify the feasibility of WNN by perch price forecasts, and then this method is used in price forecasts of the three main fish of the Ulungur Lake Aquatic, to provide the basis for the aquatic base decision

School enterprise cooperation mode is the double oriented education model based on enterprises needs and teaching goal, and is an effective way of improving the universities teaching quality and cultivating students' practice innovation ability. Based on the network perspective and enterprise demand, the paper designs a kind of new business English teaching cases computer system, and the system uses the internet interactivity make enterprise staff and teachers can achieve real-time interaction. In order to optimize the teaching case system, this paper uses parabolic interpolation to carry on multi node modification for the network transmission signal, and then a single objective network nodes optimization model will be established, and the use of VB software carries out visual programming for the system, it can enhance the system easy to operate and real-time interaction, which provides a new method for the design of computer English teaching case.

A digital mask microlithography system is designed and constructed, which employs a 405nm semiconductor laser diode as light source, and uses a DMD (Digital Micro-mirror Device) as high-precision digital mask. The microstructure array with logo and optical grating has been obtained successfully on this system. Lithography results have been evaluated carefully with the aid of microscope and white light scanning profiler. The feasibility of the microlithography system has been further proved.