Advances in Engineering Research

Ground stress is the most primary stress in earth's crust and not disturbed by engineering. In underground engineering, the fundamental cause of the deformation of surrounding rock is the influence of ground stress after the roadway excavation. Ground stress testing can provide basic design parameters...

CGMCC5515(Rifr) were domesticated step by step. Pb-resistant bacteria (PbRB) of CGMCC5515 were selected in directional enrichment and screened with TTC from the pot rice rhizosphere soil with lead and other remediate material, the reverse screen model of simulation soil rice culture with reproducible...

Based on the method of nonlinear finite element, the dynamic response characteristics and fatigue life of soft rock at the bottom of the typical cross section of high speed railway are studied. The research result shows that the peak dynamic stress of the soft rock increases nonlinearly with the increase...

Many problems have occurred in using an 11-roll leveler in 2250 cross cutting line due to the increasing maximum strength of hot rolled coil. To determine the cause of these problems, a model to calculate the leveling capacity quickly is constructed using leveler’s structural parameters and force-energy...

This paper is focused on orchard vehicle rollover and tipping problems in its operation process. Firstly, seven degrees of freedom orchard vehicle ADAMS model is established. And then, it built up a driving stability control algorithm to adjust input speed by real-time pitch angle, roll angle and other...

This paper designed a CAN network analyzer based on USB bus technology, whose function including network analysis, protocol parsing and node simulation. The CAN network analyzer based on USB interface in this article is mainly composed of two parts - USB-CAN adapter and host computer interface. This...

Leak repair clamp is the preferred method for permanently repairing pinhole and crack-type pipeline leaks underwater, and the locking mechanism is a key component of it. In this paper, through the analysis on the bite-in theory and the failure mode of the locking mechanism of clamp, three principles...

To simulate the tread temperature rise of the working subway train in the process of its normal operation and to explore the temperature rise limit of wheel tread during operation, finite element numerical simulation was used in this paper. Based on heat transfer theory and finite element method, a three-dimensional...

With the development of automobile consumption increasingly civilians, how to choose a good family car has become a topic of growing concern. In the course of our purchase of cars, the appearance, performance and safety of the indicators are considered. In order to improve the dynamic performance of...

Energy Internet is the product of deep integration of energy and information, is an important fulcrum to promote the energy revolution. In existing traditional market transactions, independent power generation model of various energy results waste of energy resources, and low efficiency of the industry's...

In practical process of dynamic balancing, rotating speed, mass and angular location of trial weight will affect one-time balancing effect. In order to find the best balancing speed, trial weight mass and angle, computer simulation and experimental research are conducted. The results show that, one can...

Nanocrystalline ZSM-5 can be used as catalysts or catalyst supports,and it has higher catalytic efficiency compared with micro-sized ZSM-5 zeolite because of its large specific surface area,so it attracted wide attention.This paper mainly discusses the hydrothermal synthesis of nanocrystalline ZSM-5.Aluminium...

In this paper, a multi-objective optimization model is established for the search of missing aircraft considering the time, efficiency and cost. First, a probabilistic model is developed to determine the distribution of the aircraft's falling zone. Secondly, we provide a fair estimation of cost based...

The pushing chain is a novel telescopic mechanism used to push the object from one position to another rapidly. The position precision of the pushing chain influenced by various factors is very important to accomplish the task of pushing the object. To compensate the clearances and machining errors,...

In order to explicitly specify the force characteristics of tied arch bridge with trough girder, this paper focus on the tied arch bridge vertical stiffness analysis under different rigidity distribution between arch and girder. The paper based on a tied arch bridge with trough girder which the span...

As limited by the size and load, multi-array antenna can not be installed in the helicopters to achieve forward-looking SAR imaging. A "bistatic" forward-looking imaging program is proposed, which used a satellite to carry illuminator and a helicopter to carry receiver. Then the forward-looking SAR geometry...

Piezoelectric ceramic as a driver is applied to the deflection of nose, which is a kind of frontier missile control mode. In order to improve the efficiency and reliability of deflection mechanism, a design scheme of the control mechanism that piezoelectric ceramic actuator combined with improved PID...

This paper is based on a diversion tunnel excavation project, the rheological stability analysis was carried out on the excavation process. Due to large buried depth, tectonic stress and stress have influence on the safety of engineering. Based on the theory of unloading rock mass and rock rheology theory,...

Catalyst selection for the catalytic wet oxidation of pharmaceutical sludge was investigated. The selected catalysts include homogeneous catalysts, alkaline catalyst, Zeolite and supported Zeolite catalysts, and metallic oxide catalysts. Experiments were performed at 220 øC for 60 min with O2 initial...

The fire tests included fire load and fire temperature had been conducted to nine reinforced concrete frame structures with ISO834 standard heating up curve. Furthermore, the static load tests had also been done under room temperature to the above nine structures after cooling and one reinforced concrete...

Establishing complete quality supervision of vegetable production is an important measure and method to improve the quality of vegetables and ensure food safety. In this paper, an information system of vegetable safety production management has been designed, which has provided comprehensive information...

An analytical solution based on slab method is first proposed to calculate the rolling force and rolling torque in asymmetrical sheet rolling where the work roll radii, their speeds, and the interfacial frictions may be different. In the solution, the shear stress acting along the vertical sides of each...

SSH is a powerful open source framework of Java Web and a lightweight solution for develop J2EE enterprise-class Web application. For the characteristics of SSH framework configuration file content more, configuration complexity and difficult to grasp, study the core configuration files. Based on the...

This report presents the application of a Tuned-Mass Damper system to effectively reduce external vibrations experienced by the driver, caused by the random vibrations of the track conditions. The aim of this study is to investigate the impact of a tuned mass-damper (TMD) system on external vibrations...

the insulator is a kind of important electric components, because it plays a role in electrical insulation and plays a supporting role in mechanical, power system and even the development of the whole society to a higher degree of dependence on the performance of insulators, the requirements are also...

Large particle size limestone (CaCO3) is an important raw material used in many branches of industry. For lacking of reaction parameters of large particle size limestone, numerical analysis method is used to study the decomposition reaction kinetics of limestone to understand the thermal decomposition...

Ebola virus disease is a severe, often-fatal illness and has a case fatality rate up to 90%. Ebola crisis could severely do harm to the economies of Guinea, Liberia and Sierra Leone unless action is taken quickly. In order to eradicate the disease with the shortest time and the least cost, we build a...

During the course of aircraft manufacturing, there are large volumes of data which has complex relationships. In order to ensure the rationality of the assembly process, to reduce assembly costs and to improve assembly efficiency, centering on aircraft digital assembly process system, we studied in-depth...

The indoor temperature control process in air-conditioned room is a multiple-input multiple-output (MIMO), nonlinear and time-delay system. Whereas the traditional off-on control methods, traditional PID control and conventional fuzzy control, exist some advantages and disadvantages, so this paper has...

Is there a way to keep the temperature even throughout the bathtub as close as possible to the initial temperature without wasting too much water? In this paper, the bathtub system can be abstracted as the water tank temperature control model. Because many factors cannot be taken into account at the...

To realize the eye pupil center location in color face image, a new algorithm based on skin color segmentation and radial symmetry transform is proposed. The algorithm makes full use of the pupil and the surrounding region’s gradient variation characteristics and radial symmetry characteristic, which...

Hongyuan Coal Mine belongs to low gas permeability coal seam, its permeability coefficient is lower than 0.1m2/(MPa•d), so the gas extraction will be difficult to do and the efficiency of extraction will be low, underground gas extraction has been using polyurethane to seal hole and this method exits...

In this paper, we design a LED driver, power factor correction circuit topology used + quasi resonant flyback type two level structure, the quasi resonant flyback type DC/DC transform part of the small signal model, design the system feedback loop parameters, to achieve the constant current drive + constant...

Tied arch bridge with trough girder mainly consists of girder, arch rib, suspender and prestressed steel bares for its superstructure. In terms of its overall mechanical performance, there are many factors affecting its mechanical performance.The factors are main girder section form, arrangement of prestressed...

The nano silica was used as the dispersed phase particle and the polyethylene glycol was used as the dispersed phase medium. The shear thickeing fluid(Thickening Fluid Shear, STF) which the SiO2 solid content of STF was 9%, 12%, 15%, 17% and 20%. The different concentration different molecular weight...

By a series of creep test on and natural environment, the development trend and law of C60 high-strength concrete creep on natural environment are analyzed and the creep law of reinforced concrete is discussed in this article.

The production of Portland cement accounts for approximately 8% of the 37 billion tonnes of carbon dioxide released into the atmosphere annually. Unlike traditional concrete, geopolymer concrete significantly reduces greenhouse gas emissions by up to 80% due to the absence of calcium carbonate conversion...

The monolayer MoS2 thin film was deposited directly on quartz substrate by chemical vapor deposition (CVD) approach using MoO3 and sulfur powders as reactants. Raman spectroscopic and photoluminescence (PL) spectroscopic analyses were conducted to evaluate the structural and optical property of the grown...

From the perspective of urban design, this paper investigates and records the soundscape in city blocks in the use of literature research, acoustic measurement, sound recording, soundscape walk, in-depth interview and other research methods. Based on data analysis, we use “place" concept and spatial...

To solve the problems of easily falling into local optimal solution and solving process instability for adaptive genetic algorithms, an improved adaptive genetic algorithm is presented by improving the crossover and mutation probability calculation method, which balances the solving stability and reliability...

In the paper, a digital optical communication system based on optical two-amplitude minimum shift keying (2AMSK) signal transmission with coherent detection is proposed. The simulation results show that, 100-Gb/s optical 2AMSK signal is successfully transmitted over 480 km standard single mode fiber...

We used the characteristics of the birds' wings, the blades of the fan are improved, and several factors that influence the noise of the bionic leaves are experimentally analyzed. Finally, the striped width of the leaves, the stripes of the leaves and the thickness of the leaves are taken as factors...

Nitrogen was introduced in the process of fix-bed pyrolysis reactor as convection gas, and the influence of convection gas/gas production rate ratio and material height on the heat transfer and pyrolysis products was researched. The results showed: With the increase of convection gas/gas production rate...

Machine maintenance in industry requires speed and convenience, one method is vibration analysis. Engine vibrations cause a pattern of sound emitted by the engine, where the sound of one engine mixes with the sound of another engine. Excessive vibration levels in the engine indicate damage to engine...

Based on spatial elasticity theory, the fundamental beam assumptions are introduced into the 20-node spatial isoparametric finite element that constructing the degenerated solid beam element in order to overcome the simulation limitations of the beam element on its cross-section scale. According to the...

Based on the analysis of the current situation of expressway network and the location distribution of earthquake disaster in Sichuan province,the paper did integration analysis to the evacuation control strategy, researched on reverse traffic control model and phased control model,finally proposed that...

This paper introduced several numerical solution methods including variable step trapezoidal quadrature method, adaptive trapezoidal quadrature method, variable step size Simpson quadrature method and Romberg integration.

Synthetic aperture radar (synthetic aperture radar, SAR) use a two-dimensional matched filter to improve the signal to noise ratio but the signal-to-noise ratio (SNR) gain of synthetic aperture radar (SAR) is controversial. The traditional method analyzes the SAR signal-to-noise ratio based on pulse...

Phenol is the major organic compound of coking wastewater. It is of biochemical toxicity, difficult processing, difficulty to be degraded and high cost in the treatments. Microbial fuel cell (MFC) is a new type of fuel cell. It can produce electron in the process of metabolism of electricigens and export...

Star sensor is an important part of the attitude control of a space vehicle. At the time of image acquisition, CMOS sensors will have some fixed pattern noise which will affect the image capture effects. From the practical application, this article apply the average of de-noising algorithm to eliminate...

This paper use RSSI wireless sensor network (WSN) to research robot indoor localization method. Location simulation analysis, which is processed by Matlab software, is used to adapt trilateration centroid localization algorithm (TCLA) and weighted centroid localization algorithm (WCLA). To verify the...

Stable and uniform sound distribution is a key factor in high precise volume determination of solid material especially for mass standards. A numerical study is carried out to study the distribution and uniformity of sound pressure. The FEM simulation results show that the sound pressure distribution...

Sustainability is a comprehensive concept to describe a pattern of development without losing coordination or over consuming resources. Our research is divided into three steps: assessing and forecasting sustainability, formulating development plan, and involving external factors.

316LN austenitic stainless steel (ASS) has been used as a magnetic support structure for ITER. Pulse current as a new materials processing method, has many remarkable advantages. In this paper, the pulse current was used to treat the 316LN ASS welded metal welded by narrow gap MAG welding. The influence...

With the steady development of artificial intelligence technology, the application of robots in workshop production has penetrated into multiple key links. This paper systematically sorts out the application of robots in production scenarios such as handling and assembly, welding and spraying. This paper...

This article elaborates monitoring system features, development status and technical features systematically, analyzes the needs of traffic monitoring systems and design appropriate solutions. Technologies of this system is J2EE based Java and MVC. This system considers the performance of traffic monitoring...

Confirming about the working point of the permanent magnet is an essential premise in the calculating of permanent magnetic circuit. In this paper, the choosing methods about the working point of the permanent magnet are analyzed overall. The calculating formulas of the optimal calculating are deduced...

In engineering application a quantitative description of both fatigue and creep damage mechanisms is demanded for high-temperature alloy. The present work employs the cohesive zone model to numerically simulate the crack propagation in a nickel-based super-alloy. Effect of loading hold period is discussed....

In this paper,an algorithm is proposed to recognize polygons. As a characteristic invariant the affine invariant triangle areas ratio of the same hemline was used to describe the polygon,and the fuzzy theory was applied in its recognition. Firstly,a pair of edges of two polygons-a target polygon and...

In order to explore the influence of Three Gorges Reservoir (TGR) operation on heavy metal pollution of sediment in tributaries, taking Daning river as a case study area, the variation characteristics of heavy metal distributions (in sections of DC, BSH, CZB, Yangtze River) were investigated, and the...

The straight-bladed Darrieus type vertical axis wind turbine (SB-VAWT) has received considerableÿattention due to relatively high efficency of wind energy and simple blade design. Slection of airfoil is crucial for aerodynamic characateristics of SB-VAWT. A numerical investigation into performance of...

Music as a part of people's leisure and cultural life is rapidly developing and constantly updating, there are many music has gradually been forgotten by people, the development of network technology provides an opportunity for better protecting music education resources; so the study of developing and...

Guanzhong traditional residence is involved in the traditional residence of North China, whose space layout is still traditional courtyard layout of China. Due to the impact of geographic position, culture, religion, life style and customs, traditional residence in Guanzhong is equipped with the space...

There was a great attraction to apply magnesium alloy as a biomedical material due to its biodegradable feature and suitable mechanical properties. In order to further improve the wear resistance performance of magnesium alloy, a micro-arc oxidation (MAO) coating containing MgSiO3 was generated on the...

With the widely development of high power and multi-channel system, passive intermodulaton (PIM) caused by passive components can not be neglected anymore. In this paper, an experimental investigation of the relationship between PIM levels and the carrier powers has been carried out and the results are...

With the rapid development of Internet, WeChat public platform has became a fresh battle field in ideology. Being an important force on promoting advanced culture and core values of socialism, with the aid of WeChat public platform, college are required to enlarge public opinion fields and firmly seize...

Using Uncorrelated Linear Discriminant Analysis ULDA algorithm, analyzing data of amino acid content in serum of cancer patients and healthy people, eventually successfully classifies the samples of cancer patients and healthy people.

According to current creep prediction mode, four kinds of concrete creep prediction model(CEB-FIP 90, ACI 209 (92), RILEM B3 and GL2000) are selected to analyze in this paper. Based on the same conditions for creep factors, some important parameters of four creep modes are analyzed and regular patterns...

Crag lurks danger to thorpe and road, which would bring on momentous losses of people and riches in case of collapse. Applicability of correlative theories and finite element method was studied. In allusion to specifically dolomite's occurrences and by virtue of data rooting in autoptic reconnaissance...

This paper in view of the architectural design of hospital inpatient department, has carried on the analysis from various aspects factor changes of medical model of historical development, social environment, national policy, the philosophy of nursing progress, society of spectrum of disease and medical...

Biogas technology, with the health, environment, economy and energy benefit, has attracted significant public and legislative attention for a long time. Despite the multiple benefits of biogas, there are some exist barriers including economic, political and social issues that have become major obstacle...

In standard runoff plots with 10° and 15° slope croplands in purple soil areas, the paper studies influences of plant hedge on slope water and soil loss for slope croplands in purple soil areas under the natural rainfall conditions comprehensively and analyzes control actions of plant hedge’s intervals...

With the socioe-conomic development of Shanshan region, water demand is rapidly growing. To make adjustments to the water resources carrying capacity, socioe-conomic and ecological environment, this study performed an index system for the water sustainability of Shanshan region. Based on the method of...

A parameter study is carried out to investigate the influence of various factors. The axial force, the width of the stiffening ring, the height of the ring, the diameter of the tube, the wall thickness, the length and the thickness of the joint are considered. At present, the ultimate bearing capacity...

Controllable weak magnetic field can be generated using circular Helmholtz coils. However, it is complex to calculate the internal magnetic field distribution. This paper mainly expounds the formation mechanism and the simulation method of controllable weak magnetic field. A simulation model is established...

The thin layer of MnO2 nanowires with a three-dimensional (3D) porous network structure is uniformly supported on the surface of cordierite honeycomb ceramic (CHC) monolithic substrate by the in-situ deposition method. A series of characterizations of scanning electron microscopy (SEM), X-ray powder...

According to the characteristics of geometric and non - smooth surface of soil fauna, we improved the mathematical model of the existing bionic moldboard,and constructed the optimization model of combined convex hull and corrugated bionic moldboard. In this paper, the convex hull of the mantis and the...

In order to understand the synergetic effect between the solution of tea polyphenols and sorghum red pigment, synergetic effect and optimal formulation of compound antioxidant with the response surface method were determined using the method of free radical scavenging under DPPH system.The results showed...

For the optimization of wind farm layout, the model of fan wake model, fan cost - benefit model and wind farm incremental capacity evaluation model are established in this paper. The simulation of the wake effect of the wind turbine is the basis for the prediction of the generation efficiency of the...

Based on the geographical data construction requirements of digital city management, current situation of fundamental geographical data and city management resources, and demands for such kind of data from land and planning department in Zhengzhou, we presented an integrative process for constructing...

A novel of embedded storage and transportation status monitoring system and sampling terminal node based on ZigBee and embedded technology is designed to acquisition the status parameters of the special equipment remotely in this paper. Wireless transmission network is established by ZigBee technology...

Based on the analysis of the Antarctic temperature change trend, this paper analyze the influence factors of the surface temperature in Antarctica, and established the corresponding model. Then, it extracts a part of the time series of dynamic data part provided by the site, and drew a timing diagram...

The screw connecting rod of a hoisting machine suddenly breaks during the service at temperatures below 20 °C. In this article, the fracture surface, material , heat treatment process and mechanical properties of the connecting rod are analyzed. We find the low temperature brittle fracture of the screw...

A NiCrAlY coating has been prepared by electrospark deposition (ESD) technology on gun steel and its isothermal oxidation behavior at 950°C investigated. The results indicated that the NiCrAlY coating consists only of a homogeneous single -NiAl phase; NiCrAlY coatings substantially increase the high-temperature...

We are always good at analyzing individual problems and finding their solutions using TRIZ tools. In practice, however, innovative professionals tend to be confronted with multiple problems rather than one. In this study, innovative tools such as “analogy”, “ideal final result” (IFR), “resource analysis”...

In this paper, the vibro-acoustic response of functionally graded materials (FGM) plates subjected to thermal environment are investigated analytically. The governing equations of the FGM plate subjected to thermal environment are derived based on the classic plate theory through Hamilton's principle....

Through the experimental test and cfd numerical simulation of the new valve body of the adjustable wearable orifice plate, it is proved that the orifice plate has good stability and regulating performance for the air volume of the dust-removal system under different pressure fluctuations. In view of...

The idle time power consumption of universities has a significant impact on the total power consumption of universities. In the paper the power consumption problem is analyzed from the definition of the power consumption of idle time, idle time monitoring of power consumption and idle time factors influencing...

The basic ant colony algorithm converges slowly, is prone to plunge into partial optimum. This paper proposes an improved ant colony algorithm with two highlights. First, dynamic candidate list (DCL) strategy is introduced. In the route construction, candidate routes, whose fitness value surpass some...

A gas pressure control instrument for air-assisted extrusion has been manufactured by us. The principle, hardware connection and software design of this controller are introduced in this paper. The PLC micro controller is assembled in hard connection with pressure sensor and control valve. The 24V power...

Cognitive radio network is a Swireless network with transceivers that can intelligently detects which communication channels are in use and which are not in use. In a cognitive radio network, a transceiver uses intelligence to determine which communication channels are being used and which are not. By...

The knowledge of degree of freedom (referred as DOF) is indispensable before a parallel mechanism is designed, but the traditional Grubler-Kutzbach formula (referred as G-K formula) which is widely used is not appropriate for complicated mechanism, especially the hexapod robots. In order to derive the...

The pairwise sequence alignment algorithm, Needleman-Wunsch is one of the most basic algorithms in biological information processing. However, the Needleman-Wunsch algorithm based on dynamic programming gets optimal alignment results with high time complexity and space complexity,which is impractical.This...

There has a constant barrage of worms over the internet in recent years. In order to effectively prevent worm spreading, researchers are trying to understand the behavior of the worm propagation with the aid of epidemiological models. In this paper a worm propagation model with time delay and quarantine...

In this paper, the bathtub water thermal insulation problem has been studied, it analysis the effect to heat dissipation caused by body movement, and determine the input hot water flow and the output water flow according to the law. Thereby keep the bath water temperature close to the initial one. Firstly,...

Transfer function models is of considerable interest in economics, engineering, biology, and many other fields. Models of this kind can describe not only the behavior of industrial processes but also that of economic and business systems. Transfer function model building is important because it is only...

A simple and effective method has been used to prepare graphene oxide and/or partially reduced graphene oxide–polypyrrole (GO/Ppy and PRGO/Ppy) composite with sandwich structures by using the soft template method. In the case of GO/Ppy8, a high specific capacitance of 456 F/g at a current density of...

Association rule mining is the core technology of data mining. The Apriori algorithm is introduced and applied to the process of students taking courses and teaching themselves by a network teaching system. On the basis of large amounts of data, frequent itemsets will be found by the Apriori algorithm....

In recent years MANET gain a significant attention for the potential application in battlefield, disaster relief, traffic monitoring and environment monitoring. Construction and maintain of virtual backbone, and energy effective routing in mobile ad hoc wireless network come to be the basic and main...

The existing national garden city assessment standard mainly uses the method of the qualitative evaluation, the means is unitary, makes the appraisal result to lack the scientific and the authority.Aiming at this problem, this study on the basis of the existing standard proposed the combination of subjective...