In this paper, the implicit finite difference method is developed for the fractional wave equation with Dirichlet and fractional boundary conditions. The consistency and stability of the method are strictly provedbytheGerschgorintheoremandmathematicalinduction. Numericalexamplesshowtheaccuracy and efficiency...

Considering the conditions of the environment for the growth of fungi, we designed the intelligent fungi training monitoring system based on ZigBee wireless communication, put forward the design idea and principle circuit for the control factors, and gave the general design plan. With ARM micro controller...

In this paper, the new use of new materials for conservation landscape, especially wood plastic composites, is used as a starting point. The principles and strategies for the application of new materials in contemporary urban landscape are analyzed, and the artistic modeling design and example of plastic...

The fast sealing technology of mine roadway is an effective method to isolate spontaneous combustion zone, poisonous and noxious gas source or gas accumulation area by establishing effective sealed wall quickly. Aiming at the problems of poor sealing effect, cumbersome operation, difficult construction...

Based on the full monitoring of mine ventilation system by a safety surveillance control system, the feedback control is applied to design a hierarchical control model. It mean that the total mine air volume is controlled by a main fan power supply module converter, the roadway area is controlled by...

This research uses only surface control points to parameterize the 3D geometry of a muscle body. Extension from surface to interior is achieved using a harmonic interpolation in cross section and in the lateral direction using NURBS. This representation preserves geometric smoothness, and allow muscle...

Based on the three-dimensional phase field model, the competitive growth of columnar crystals under the conditions of different anisotropies and different subcooling degrees in the directional solidification process was simulated with the Al-2%mole-Cu two element alloy as an example. The influence of...

Different volume ratios of Al2O3 powder and copper powder are mixed, and a copper-based composite coating is prepared on a pure copper matrix by low-pressure cold spraying technology.The hardness and bond strength of the coating were tested, and the cross-section of the coating was observed and analyzed...

Mathematical model of potato slices under process-based temperature and humidity integration control of tilted tray air impingement drying were investigated under different parameters. Results indicated that the Weibull distribution function simulated the drying curves of potato slices under PDTHIC drying...

Microwave intermittent drying kinetics of banana slices were investigated under different power levels (250, 400, 550 and 700W), sample thickness (3, 6, 9 and 12mm), heating time (11, 14, 17 and 20s) and intermittent time (50, 60, 70 and 80s) during each cycle. Results indicated that all the four factors...

The industry-university-research collaboration is the driving force for the innovative city construction. The innovative city construction can promote the development of the industry-university-research collaboration. This article empirically studies the interaction between industry-university-research...

This paper models and analyzes the photovoltaic power generation and wind power generation in the wind-solar hybrid generation system. A neural network inner membrane controller based on wind-solar hybrid power generation system is designed. The closed-loop control system is used to make the output power...

To discuss about choosing the parameters of bearing capacity with over-size transport passing the bridge, this study analyzes the characteristics of designing load of heavy transportation which are different from the general cars; according to the characteristics of accidental load of heavy-cargo transportation,...

In this paper, the age factor of chloride diffusion coefficient of concrete is considered, as well as the randomness of the chloride diffusion coefficient, concrete cover depth, surface concentration, threshold concentration and age factor. Based on the First Order Reliability Method, a time-dependent...

In order to study the optimal ratio of compound suitable for crop growth ,analyzed physical and chemical Characters and crop yield of compounded soil with feldspathic sandstone and Sand (proportion: 1:1, 1:2, 1:5) by plot test. The results showed that as the content of feldspathic sandstone decrease,...

According to salt expansion and strength parameter index c and φ of sulphate salty soil, we assume that three-layer soil body of salty soil is destroyed. Assuming the network slippage diagram and using rigid-plasticity balance theorem, the calculation method of bearing capacity in salty soil area is...

Safety standards of construction companies could be improved by continuous monitoring and assessing their safety performance. Despite various methods of Safety Performance Evaluation (SPE) have been proposed, bias or errors can be made by neglecting the inter-relationships among internal variables in...

Safety risks are complicated in the metro construction, so the identification and control of the risk factors as well as the mitigation of coupling effect of risk events are the important ways to improve the safety performance of the deep foundation pit construction project. The purpose of this paper...

With the building size, shape, function more and more complex, building systems have become more complex, often to a variety of complex piping systems are arranged in a limited space, and also to meet the appropriate space requirements. In order to achieve an intuitive understanding of the key parts...

As the size, shape and function of construction projects are becoming complex, building system designs are more challenging. The traditional building system design pattern has been unable to meet the current requirement of the overall design of the building. For designers by conventional two-dimensional...

A workshop located in Tianjin suburb is selected using computer numerical simulation technique to study the indoor daylighting. The original daylighting design and optimized design are simulated and the leading indicators of natural light are compared and analyzed. Research results show that compared...

In this paper, the numerical simulation method is used to optimize the lighting simulation and energy-saving evaluation of a subway station in Tianjin. The simulation results show that after the optimization of the lighting design, the mean value of Illumination on the spring and autumn equinoxes of...

In this paper, the daylight of an underground transportation hub in Tianjin is studied by using the method of numerical simulation. It can be seen from the numerical simulation results that the average illumination in the waiting halls is 3 620.64, 4 497.60 and 2 178.97 lx in the vernal equinox and autumn...

In this paper, we have presented a new hybrid conjugate gradient algorithm for solving unconstrained optimization problems. The parameter is a convex combination of the PRP and FR conjugate gradient methods. Under general wolfe line search conditions, we proved the global convergence of the algorithm....

Nowadays, more and more waste construction waste is abandoned in China, which makes the problem of environmental protection especially prominent. The reuse of waste concrete not only helps to solve the problem of landfill, but also contributes to sustainable development of resources. However, due to...

Sprayable gypsum-based mortar was prepared by using desulphurized gypsum as cementitious material. Through the test, this study analyzed the influences of lightweight aggregate, water retention agent and thixotropic agent on compression strength, tensile bond strength, water retention rate and constructability...

Based on the monitoring data in the automatic ambient air monitoring station of Quancheng Square in Jinan from 0 o’clock of 11/06/2016 to 0 o’clock of 15/06/2016 as the typical pollution process, spatial distribution, related weather condition, ozone precursors, and regional transportation of ozone were...

Scaffolding erection is an indispensable process in high-rise building construction, which directly affects the safety of building construction.The traditional cable-stayed cantilevered scaffold erected with cantilevered beam faces the problem that the prefabricated part of the building can not be anchored.It...

The distribution and composition of the 17 organochlorine pesticides (OCPs) in selected samples were investigated with the gas chromatography coupled with Agilent triple quadrupole mass spectrometer (GC–MS). Only DDT has the highest detection rate of 100% within one year period. The total residual concentrations...

At present, the measurement of vehicle road load, in other word running resistance, are mostly coast down methods. Due to the influence of wind, the method has the problems of poor repeatability and accuracy. This paper, according the current domestic and foreign automobile road load measurement regulations...

Volatile Organic Compounds (VOCs) is one of the important atmospheric pollutants. It is important to develop materials and technologies for VOCs treatment. Adsorption is recognized as a relatively excellent VOCs control technology. Montmorillonite is selected as a base material for the preparation of...

The bellows is a flexible force structure. When a parameter of corrugated pipe is changed, the force and deformation of the pipe are changed. With double hole Steel corrugated pipes as the background, this paper adopted finite element analysis software ANSYS to make numerical simulation of the study....

With double hole Steel corrugated pipe as the background, this paper adopted finite element analysis software ANSYS to make numerical simulation of the interaction between the pipe and the soil. At the same time, the field experiment was carried out. Comparing the results of numerical simulation with...

To enhance the durability of semi-rigid base asphalt pavement, it is suggested that the asphalt treated base (ATB) layer should have certain drainage capacity to eliminate the water inside the pavement, and the crack resistance of ATB mixture should be improved to prevent and/or delay the generation...

Stirrups corrosion lead to degradation of ductility of concrete columns, the damage would transform from ductility to fragility, even to sudden destruction. In order to avoid concrete structure clasping because of the impact of earthquake and shocking, the mechanical property research of concrete columns...

In order to research on the transport of chloride ions in prestressed box girders under coupling action of salt fog and fatigue loading, the volumetric strain and porosity as the intermediate variables, coupled processes was established based on the fatigue damage criterion. And compared with the related...

To use BIM technology in the whole life cycle of railway structures, this paper builds all parts family models of frame bridge by Autodesk Revit including body and foundation of frame bridge, wing wall and its foundation, leak bed and appurtenant works on the top of bridge. Building track model by using...

The purpose of bridge construction monitoring and control is to ensure control indicators within allowable range by measuring and correcting, and to ensure the safety and quality of the bridge during the construction stage. Based on a prestressed concrete composite box-girder with corrugated steel webs,...

Being a driver in the control cabin of a shield tunneling machine is a high-pressure career. The mood swings of a driver are vital to his occupational health and construction safety; however, a driver’s emotional intensity in a noisy environment have not been considered. This study aims to investigate...

The employment of similitude theory to establish similarity among structural-acoustic systems can save considerable expense and time, if the proper scaling laws are found and validated. In this study necessary similarity conditions or scaling laws for dynamic analysis of stiffened cylindrical shell are...

A novel nonlinear system identification method based on the Multi-dimensional Taylor Network is proposed in this paper. It provides a new method to identify the nonlinear system, which can describe the dynamic characteristics without prior knowledge and can realize the prediction of the nonlinear time...

Digital Surface Model (DSM) can fully exhibit the undulate features of terrain and landmark, which has obvious advantages in buildings extraction rapidly. The experiments about oblique photography measurements during the M6.5 Ludian Earthquake occurred in Longquan village Longtoushan town on August 3,...

To study the bearing characteristics of PHC pile composite foundation, base on the analysis of soft soil characteristics, according to the design parameter, the static loading test are used to test and an-alyze the bearing capacity of the composite foundation. The results show that it is feasible that...

The Algeria North-South Expressway from Chiffa to Berrouaghia is located in Blida province and Medea province in northern Algeria, with the route along the Chiffa river valley, through the national park in Algeria, large tracts of vineyards and other agricultural land in Medea privince, and bypassing...

The Algeria North-South Expressway from Chiffa to Berrouaghia is located in Blida province and Médéa province in northern Algeria. It is the starting section of Algeria North-South Expressway in the Algeria national arterial highway networks composed of two latitudinal and one longitudinal highway. As...

Based on the 57 prefecture-level cities and three municipality (Beijing, Tianjin and Shanghai) in the Beijing-Shanghai high-speed rail economic zone over 2006–2016. We establish traditional the ordinary panel model and the spatial lag fixed model, in order to investigate the spatial spillover effect...

According to adaptability of the freight supply and demand structure in urban agglomeration, this paper studies the mechanism of freight transportation’s supply and demand in urban agglomeration, putting forward and demonstrating the adaptability theory of freight structure in urban agglomeration. Firstly,...

Blueberry was one of the five healthiest fruits in the world. We observed the phenophase in six blueberry varieties from the leaf buds germination period to the fruit maturity period. The six blueberry varieties included ‘EM’, ‘Biloxi’, ‘Pink Lemonide’, ‘O’Neal’, ‘Sweetheart’ and ‘Brigitta’, in Nanbao...

Blueberry is known as the highest anthocyanin fruit in the world. Blueberry matures between June and August, which is the hottest and wettest time, fruit quality tends to drop. In this experiment, the changes of Delphinidin-3-O-glucoside (Del-glc) and Malvidin-3-O-glucoside (Mal-glc) in different maturity...

Blueberry seeds have low germination rates, which is difficult to germinate under natural conditions. In this experiment, the optimum treatment of blueberry seed germination was explored using different hormones, different concentrations of the same hormone and different treatment durations. The results...

The wave force analysis of jacket platform is hard in the design. PIPE59 element in ANSYS software has the function of computing buoyancy, wave and current load. By control the unit parameters, can simulate current load automatically. In the Water Table menu input eight direction wave flow parameters...

A fully encapsulated Al2O3 dielectric is developed to improve device performance in multilayer MoS2 transistors. Compared with bottom gated MoS2 field effect transistors, top gated transistor with top Al2O3 dielectric layer and bottom Al2O3 passivation layer shows great electrical property improvement...

Transformer oil as an important mineral oil is widely used in power equipments and its fundamental properties can be obviously presented by the vapor pressure which is difficult to be accurately evaluated due to its complex compounds. According to the testing mechanism of thermal balance, a simple method...

The employment of similitude theory to establish similarity among structural-acoustic systems can save considerable expense and time, provided that the proper scaling laws are found and validated. In this study the scaling laws for structural-acoustic systems are developed and validated. The stiffened...

Aiming at the problem that the system of digital electro-hydraulic(DEH) regulation system is complex and difficult to analyze its condition, a method based on characteristic extraction and information fusion is proposed. By making RCM analysis, the indexes for quantitative risk evaluation of fault modes...

With the increase of mining depth, dynamic disaster is more severe, which is a serious threat to the safety of miners. Because of complex mine geological structure, and relatively junior safety facilities, tunnel collapse and other dynamic disasters are easily induced, which brought great difficulty...

The studying about the seismic performance of shallow and spherical shells with ribs and rings is very lack. So it is necessary to study its dynamic response under earthquake. In this paper, the finite element model is established by ANSYS software. The first 10 orders of natural frequency and mode shape...

The structure of large ribbed ring stiffened shallow spherical shell is widely used for roof design of gasholders and oil storage tanks. The FEM of scale shell structure is established and the static performance is analyzed. The grid verification and time steps verification are performed to assure the...

Aiming at the problems such as limited time, limited arms, limited tools, hard to faults simulation show and hard to speek the fault test theory and maintenance process, this paper designed the gun interactive virtual maintenance platform and analyzed the fault simulation. First of all, the three deriction...

The main circuit of inverter power transform fault mode analysis in the paper, using multiple support vector machine (SVM), implements the main circuit of inverter power transform fault diagnosis. In equipment fault diagnosis, online or offline to analyze the circuit, its running state, the learning...

In order to solve the real time stream forwarding problem of multi source video on heterogeneous networks, a set of efficient signaling request flow and forwarding algorithm is designed to realize the undifferentiated forwarding service and unified management platform for different vendors and different...

In this paper, the pressure model of an electro-hydraulic proportional variable plunger pump is set up through mathematical modeling, and the simulation analysis is carried out with the MATLAB tool. The dynamic response characteristics are obtained, which provides some reference for the research of the...

Modbus Protocol is commonly used in Building Automation System devices. Siemens compony with good quality and high quality services, is one of the largest supplier for Building Automation System in China, but Insight software of Siemens only provides OPC and BACNET Protocol for other brand building products...

Environmental, clean and sustainable new energy sources have been paid much attention by researchers all over the world due to the increasingly exhaustion of traditional energy resources and the worsening of the ecological environment. Wind and solar energy are typical new energy sources, they cannot...

Aiming at the optimal operation of single-stage pumping station in the multi-stage pumping station with small buffer pool, on the basis of the research work at the present stage of long-distance multi-stage pumping stations, the objective function , Head flow and other constraints within the single-stage...

Aiming at the operation control of adjacent pump stations in the multi-stage pumping station of a small buffer pool, a transient mathematical model of pipeline flow was established by hydraulic calculation in the pipeline to calculate the start-up time difference between pumping stations at different...

To make effective use of high-quality radial velocity measured by Doppler radar and improve the positioning accuracy of target trajectory, a combined positioning method with single Doppler radar and single optical theodolite is proposed which is based on target trajectory expressed by function, called...

With the advent of the big data era, the application of big data technology in the railway industry is becoming more and more widespread. Through the analysis and application of big data, the management level and economic benefits of the China Railway Corporation can be effectively improved. In order...

In this paper, based on the predetermined virtual trajectory, the reference yaw angle for lane changing was generated. From the dynamical model of front and rear wheel steering vehicle, considering the influence of sideslip speed, a track error model of vehicle for lane changing is established. By applying...

In order to meet the development trend of smart environmental protection platforms and smart environmental monitoring systems, this paper proposes the recommendations of unmanned intelligent detection and processing technologies to improve the level of environmental monitoring. The article discusses...

Compared with the transform domain video watermarking algorithms, the spatial watermarking algorithms have weak robustness, but they have high visual quality. To ensure the video quality and satisfy the robustness requirement, a robust video watermarking algorithm based on spatial domain is proposed....

The paper introduces the detailed derivation and design procedure for class-E DC-DC converters operated at very high frequency. Design formulae of the converter are derived. The converter features zero or low dv/dt at the turn-on and turn-off instants of the switch in the inverter and the diode in the...

Some kinds of compound soil conditioners (i.e.,Fe1,Fe2,Fe3 and Fe4) were made from materials including zero-valent iron, sulfur and calcium hydroxide according to a certain weight proportion of them. And a soil-pot trial was conducted to test effects of using those soil conditioners on vegetable yield,...

This paper examines how feasible it is to utilize microbial induced calcium carbonate precipitation (MICP) occasioned by Bacillus pasteurii (B. pasteurii) to fill pores and cracks within mortar and thus increase the strength and consequent durability of mortar. In this study, different mortars were prepared...

New energy has developed rapidly under the current background of coping with energy crisis and environmental changes. However, new energy generation such as wind power, photovoltaic, etc. is characterized by randomness and intermittency, and new large-scale new energy incorporation brings new power to...

The construction and development of UHV power grids has changed the energy allocation mode which was excessively relied on coal transportation and power development mode which balanced locally in the past. However, with the development of UHV technology, the security contradiction of the large power...

We decompose energy consumption of Beijing-Tianjin-Hebei by Logarithmic Mean Division Index. Our results show that economic development, population and industrial structure promote energy consumption increase, energy intensity play a role in reducing energy consumption, energy structure change almost...

The toxicity of phenol to aquatic biota has been studied extensively for a long time. However, most studies have used a constant concentration aqueous exposure of phenol to an invertebrate species. This research was designed to characterize the toxicity effects of pulsed phenol (C6H5OH) exposure to Moina...

In the course of development, the implementation of "Wonderful China" is faced with many problems. However, developing rural ecotourism could be an effective way to deal with it, which can not only provide more employment opportunities for farmers, but also promote the material civilization and spiritual...

Finite element analysis software Abaqus was used to establish a two-dimensional microscopic finite element model of SiCp/Al composites. The SiC particles and the aluminum matrix were defined respectively, and the cutting process was simulated and simulated. The fracture pattern of SiC particles was also...

The sources of urban sewage are complex that lead to harmful substances such as heavy metals et al existing in the excess sludge. If the sludge is directly discharged into the environment without treatment, it will cause secondary pollution to the environment. The paper used the photogenic bacteria to...

In recent years, drugs have been classified as new pollutants, and an increasing attention has been paid in the field of environmental remediation. As an effective drug for treating diseases and promoting growth, antibiotics are widely used in medical, livestock and aquaculture. However, due to the improper...

Surplus sludge produced by sewage treatment plants is one of the important repositories of antibiotic. In order to reduce the adverse effect of the antibiotics on the environment, the sludge drying reed bed was used to treat the sludge. The experiment investigated the removal efficiency of antibiotics...

With the widespread use of antibiotics, environmental hazards caused by antibiotics and resistant bacteria residues have attracted wide public attention. In this paper, fluorescence quantitative PCR was used to detect and analyze the removal, distribution and influencing factors of four sulfonamide antibiotic...

In recent years, antibiotic pollution has become more serious in the coastal waters of China. This paper summarizes the distribution of antibiotic pollution in the coastal waters of northern China (Bohai Bay, Laizhou Bay, and the northern Yellow Sea coast), calculates and evaluates the environmental...

Landfill leachate has the characteristics of high concentrations of toxic and hazardous substances and complex and varied characteristics. After the Mechanical Vapor Recompression (MVR) + Vapor Processing (VP), the distilled water at the end of the treatment still contains a large amount of dissolved...

Loading releasable biocide is a conventional method to mitigate membrane biofouling, but its application is always limited by short lifetime as a result of biocide releasing. In this study, an anti-biofouling membrane was fabricated by introducing copper nanoparticle/carbon nanotubes on ceramic substrate....

Circularly polarized antennas are widely used in the field of satellite communications. The receiving and transmitting polarization mode are generally controlled by polarization switch. Compared with the receiving polarization mode detection, the transmitting polarization mode detection is complex relatively...

Calibration flight is a technical means for the performance and accuracy inspection of TT & C equipment. It installs some cooperative objects such as transponder on the aircraft in order to simulate a access between the spacecraft and TT & C equipment, so as to complete some related test projects. The...

Using KN-16 as original strains, adopting compound mutagenic of ultraviolet irradiation, 60Coγ-ray irradiation, protoplast ultraviolet irradiation, measuring the content of Jinggang-mycin A by gas chromatography. The mutagenesis condition was determined by lethality testing, flask fermentation, resistance...

For the international maritime organization (IMO) has decided to implement 0.5% of global sulfur restrictions by 2020,the paper focuses on three main countermeasures,advice on the relationship between the advantages and disadvantages of the three countermeasures shall be given.It is hoped that the plan...

design a Switching Mode Power Supply Charger with a power factor correction. Discuss the design scheme of main circuit and control circuit. Expound the calculation method of the key element parameters. The experiments indicate that the device get a good performance on output and reliability. The charger...

With the introduction of "Internet +" series of policies, the development of energy Internet has reached a new climax. Based on the research of domestic and foreign literatures on the development of energy Internet, this paper introduces the Energy Internet benefit assessment and development model in...

Through the analysis of the gas control effect of the mine protected layer, it was shown that the combination of surface drilling and downhole through-layer drilling can solve the problem of pressure relief gas emission of the protected layer and avoid the gas overrun accident in the working face of...

In order to understand the relation between advance rate of single seam working face and gas drainage volume, the parameter of gas concentration, differential pressure, temperature, absolute pressure is measured in gas drainage pipelines after highly or low-located holes gas drainage method is adopted...

It is complex that the structure and operating environment of Vehicle. Using stress monitoring and acquisition system, we can collect temperature and humidity, load, vibration and other information in the whole life cycle of vehicle. The system architecture, hardware and software are designed to solve...

Purpose: To research the relationship between air pollution and the incidence of stroke in Jilin. Methods: a random sampling method was used to select 370 patients with new stroke who were treated in Jilin Central Hospital and Beihua University Affiliated Hospital from October 2016 to March 2017. Pearson...

The 20th witnessed the resurgence of China’s civil society through the rapid growth of civic environmental non-governmental organizations (ENGOs). Especially since the mid-2000s, ENGOs have gradually begun to pursue policy relevant goals and play a vital role in policy formulation. The political opportunity...

From the perspective of economy, society, and ecology, we study the impact of information networks on the utilization efficiency of cultivated land. Using the information entropy model evaluates the utilization efficiency of cultivated land from 2007 to 2016 in China, and empirically analyzes the the...

The coupling effects of gas-rarefaction are taken into consideration to investigate the static and dynamic performance of the three lobe gas bearing with ultra-thin gas lubrication. The influence of gas-rarefaction on static and dynamic performances of three-lobe bearing with different models are studied....