Advances in Engineering Research

In order to verify the feasibility and innovation of grey clustering method for the introduction of weight theory in water quality evaluation. Ming-guan campus of Hebei University of Engineering set up 8 monitoring points to continue water quality monitoring in Handan for 7 days as a cycle of October,...

By using a finite element analysis method in this paper, the rigidity and strength of a vehicle type clutch pedal was simulated and analyzed, in order to verify whether the rigidity and strength of the clutch pedal meet the design requirements, and thus to provide theoretical basis for the freezing of...

In the paper,most multiphase flow model use viscosity as an important parameter, however the viscosity of mixed fluid sometimes is unavailable or difficult to measure especially in small-scale flowing condition,In order to solve this problem, the drift-inhibition angle and expansion-inhibitions angle...

As an excellent tear agent of the second generation, CS has been widely used in the police department of many countries. CS disperses the crowd depending on the aerosol in the air due to combustion and explosion. And at the same time, CS decomposes into a variety of products. With the use of TG/DSC-FITR...

This paper aims to study on the impact of different of Mn2+ concentration on anammox to determine the perfect Mn2+ concentration to realize anammox. The experiment uses real life wastewater of Shenyang Jianzhu University under the condition of temperature at 35 , infusing argon to removal DO, controlling...

Context-aware applications can sense and explore the context of production processes to provide proper and useful services to managers in workshop. Firstly, a multi-level ontology model of materials is found which is expressed in OWL as an ontology collection of describing places ages and events and...

The article is devoted to a comprehensive analysis of the structure of the forest flora of the Chechen Republic. Based on herbarium material and literary sources, 309 species of vascular plants belonging to 180 genera and 76 families have been studied. According to the groups of the biomorphological...

The pavement subbase is an important part of the pavement structure, and it is also the structural layer which is prone to appear quality problems in the pavement. As the main bearing layer, the pavement subbase plays a connecting role between the subgrade and the pavement. The practical engineering...

This paper presents the numerical solution of a fully dispersive fifth order nonlinear wave propagation model. The new equations are directly applicable to the wave propagation from deep water to shallow water and solved numerically with a finite difference method. A moving grid in spatial difference...

The article mainly designs the basic parameter of ISAR real-time imaging system, meantime analyses the basic property index of real-time imaging. then, it will obtain favorable high resolution ratio ISAR image through post imaging processing.

As one of the effective ways to mitigate earthquake hazards, earthquake early warning (EEW) has been studies by many countries and regions around the world and significant mitigation effectiveness has been achieved during practical application. However, the data format for real-time data transmission...

In recent year, as a major national strategic emerging industry, location based services (LBS) have been widely used and been affecting people’s daily lives. With the speeding up development of urbanization and further improvement of people's living standard, the demand of three-dimensional location-based...

To solve the defect of common finite element analysis which cannot imitate the micro-structure and mechanical properties of materials, a new kind of FEA model is founded to simulate the metallic micro-structure based on the dispersed mechanical characters. Some research is performed by this model on...

In the process of hot strip rolling, accurate and efficient shape process control system is an important factor to ensure strip with good shape. This paper, based on advanced control concept and optimization mathematical model, aimed at Jingtang 1580 hot strip rolling project, developed advanced shape...

With the continuous development of social modernization, the requirements for urban land resources become increasingly urgent. Considering that there is no specific measurement of the compactness of urban spatial form, this paper set up a new model, which graphically defines the concept of population...

Index is indispensable in database system to speeding up data access. Commonly used indexes in main memory databases are B+-Tree, T-Tree and their variants. Cost model of main memory database are more complex than disk-oriental database, and relatively little work has been done on this area. This paper...

This paper uses ICEM and the FLUENT CFD module of ANSYS software to do numerical simulation of Sterling engine combustion chamber 3D model, to reflect the the turbulent flow characteristics of engine combustion chamber in the Sterling velocity field distribution, further, according to the analysis re-sults,...

In this work, chitosan/graphene/TiO2 (CS/GR/TiO2) composites for the removal of Cr(VI) was prepared and characterized by FT-IR, XRD, Raman spectroscopy, TEM, SEM and N2 adsorption-desorption measurements. The composites could retain large specific surface area of graphene, the mesoporous structure of...

Power grid in future will develop into an extra-large interconnected grid with larger transmission capacity and more complex running characteristics. The trend of grid dispatching control system must be global wide-area and dynamic integrated necessarily. In this situation, it makes higher demand for...

The crash occurred frequently recent years, civil aviation aircraft safety issues become the focus of attention, and real-time tracking and monitoring of flight trajectory has become an urgent problem to be solved. At present, Aircraft Communication Addressing and Reporting System (ACARS) is the only...

In the DV-Hop localization algorithm of wireless sensor networks, positioning error of the unknown node is larger if it obtain the average hop distance from the nearest anchor nodes.In order to improve the positioning accuracy of the node, this paper improves the DV-Hop algorithm. The improvement of...

with the promotion of the concept of sustainable development, green building design is more and more widely used in architectural design. This article has carried on the research to the green building design present situation, has analyzed the green building design idea content and the principle, and...

The influence of nanoadditives of organic and inorganic origin on the rheological properties of heavy fuel oil was considered. Diproxamine, an oil soluble nonionic surfactant, multiwalled carbon nanotubes of the carbon nanomaterial Taunit and dehydrated carbonate sludge were used as additives. The search...

In order to facilitate solving lateral displacement of column cap for various kinds of high-rise structures, and provide reliable basis for engineering application, practical calculation formulas were derived for lateral displacement of column cap, based on the equilibrium differential equation of the...

Green building will be developed towards the direction of low energy consumption, high efficiency and less pollution. This paper is focused on the analysis of design process and application of ecological and energy-saving technique of the gymnasium of Weifang Medical University, with a view to discussing...

Heat transfer and pressure drop in an all-welded plate heat exchanger with ripples have been experimentally investigated in this paper. The ripples were corrugated by the way of special machine. The heat transfer coefficient and pressure drop was experimented, and also calculated by the wall temperature...

Based on the working mechanism of metal pipelines strengthened by basalt fiber reinforced polymers (BFRP), the properties of the new stretching and anchoring integral anchorage for prestressed BFRP are studied. The results show that BFRP could be prestessed by rotating anchor rod, and that bolt could...

Pistons are vital components of internal combustion (IC) engines and are used in various vehicle types. The high temperatures produced in an IC engine can cause major thermal strains. Reduced efficacy of the piston crown resulting from inadequate heat dissipation mechanism would affect the piston’s performance...

The world medical association has developed new medication to stop Ebola and cure patients whose disease is not advanced. In order to offer an optimal plan to optimize the eradication of Ebola, we establish a mathematic model based on the spread of Ebola virus disease. The first model is based on Susceptibility...

According to the characteristics of the electronic equipment fault diagnosis and maintenance training, graphical fault diagnosis system was designed. That the graphical training system of fault diagnosis composition, database design and data graphical representation was mainly introduced. The system...

Glaucoma is a chronic eye disease which cannot be cured, so that detecting the disease in time is important. Machine learning for glaucoma diagnosis has achieved great development in recent years. In this paper, we present an algorithm for glaucoma diagnosis from optic disc and optic cup boundary lines...

Tool wear is a key issue for the friction stir welding (FSW) of aluminum matrix composites (AMCs), especially when the volume fraction of reinforcing particulates is relatively high. In this study, a tapered smooth tool of W6Mo5Cr4V2 high speed steel is used to weld a cast AMC composed of AA6061 matrix...

The SQL conditional expression is not a constant expression, making it impossible to judge its legitimacy through the final value. However, there exists one alternative way where the elements in expression should be identified first to obtain the corresponding postfix data type expression, and the algorithms...

Researches on methyl tertiary butyl ether(MTBE) distillation desulfurization process are very common now, but the influence of the separation of tertiary butyl alcohol(TBA) in MTBE on this process was seldom reported. This paper analyzes the 2-column MTBE distillation desulfurization process in detail...

Based on the proteus simulation software, the paper realizes the individual timing and separated control on the transportation of Channel A and B with the 8254 counter and 8255 programmable parallel interface. The method of timing plus interruption control is adopted to count the passing time of vehicles...

Gourds include watermelons, melons, zucchini and pumpkins, which occupy large areas and belong to large-tonnage crops. To increase the efficiency of processing the fruits of gourds is possible due to the integrated processing of their seeds. The problem of rational processing of gourd seeds with the...

There are various factors affecting drying shrinkage of cement-based material, including use quantity of cement and auxiliary cementitious material, water cement ratio, maintenance system and drying condition, and in addition, total quantity of coarse and fine aggregate, matching and category also affect...

Structural Health Monitoring (SHM) plays a vital role in ensuring the safety and longevity of engineering systems, especially in aerospace applications. However, the anisotropy and concealed damage mechanisms of composite materials present significant challenges to conventional monitoring techniques....

Amphiphilic fluorocopolymers P(MMA)-co-P(PEGMA)-co-P(DFHM) are prepared via ATRP by hydrophilic poly(ethylene glycol) methyl ether methacrylate (PEGMA), hydrophobic dodecafluorohrptyl methacrylate (DFHM) and methyl methacrylate (MMA). The self-assembled surface is characterized by chemical composition,...

The complexity of software upgraded is the inevitable result of the deepening of social information, and then to put forward higher requirements of software testing. Because of technology, co-ordination, geopolitical, or other non-technical factors these factors the tested software and related hardware...

In this thesis, the related parameters of LGS are treated in analysis. We use experiment method to investigate LGS’s characteristics as Q-switched crystal in laser and compare it with the commonly used KD*P crystal. The advantages and disadvantages of LGS crystal are summarized in the photoelectric effect...

Soil erosion by water is a serious problem all over the world. In China, about 1790000 km2 of land suffers from water erosion, which accounts for 18.3% of China’s total area. Based on RS and GIS methods, this paper taking Miyun County as the study area, with 2011 rainfall data, Landsat TM images, ASTER...

In order to optimize the structure of the pick cutter under the premise to meet its performance, and to achieve their own weight, the pick cutter of the longitudinal axis roadheader, which works under complicated seam conditions, is regarded as the research object. Based on the finite element method,...

Based on full-size vehicle collision test, a new finite element dummy model (FEM dummy) was built in this paper, at the same time the corresponding dummy's material parameter curve optimization method was proposed. For the result of dummy simulation being in keep with that of full scale vehicle collision...

Model test of long-term drainage consolidation model of floating mud was carried out in this paper. The test was carried out in a large consolidation model test tank developed by the laboratory itself. The test reinforcement period is 691 days. After the reinforcement by a preloading load of 80kpa, the...

Aiming at the manual ball valve in irrigation pump in industrial production pipeline, it is researched the flow characteristics of the valve and the pipeline under different way of opening valve. It is used user defined function (UDF) method and dynamic mesh technology of FLUENT software. Three valve...

Threaded adhesive joints between stainless steel electrodes and insulating structure of axial insulation break was studied in detail. Wet winding process was chosen for Glass Fiber Reinforced Plastic inner insulation tube, and threaded adhesive method was chosen for joints bonding GRP to Stainless Steel....

To ensure the efficient and high-quality construction process of major water conservancy projects, the innovative integrated control technology for dam construction materials in tropical regions is applied. An intelligent construction management platform applicable to the Maiwan Water Conservancy Hub...

In recent years, the urban planning theory of Healthy Growth has getting more and more attention, due to the situation of increasing urban population. To better quantify the healthy growth degree of a city, we build an AHP based Evaluation System of Healthy Growth. Firstly, we classify and quantify the...

In aerospace equipment manufacturing, the machining deformation of the large integral structure is seriously influence on the machining efficiency and the accuracy of the parts. Based on the theory of elastic-plastic theory, the finite element analysis model of machining deformation of 3D integral frame...

With the fast development of electricity system in China, the lack of a monitor method to ensure the stability and safety of electric transmission simultaneously comes with the strengthened construction of power supply. Besides, the Icing phenomenon is common to see in the electricity system and it brings...

Based on SBR we discussed on biological removal phosphorus system. In the reaction temperature at 15 and 25 under the conditions of influent COD/TP ratio and COD load of sludge. Total phosphorus concentration of influent was be constant for 10 ± 0.5mg / L, compared to anaerobic paragraph at the end of...

A CMOS input buffer with linearization technique for high-speed A/D is introduced. The buffer features high-linearity and low-power consumption. The simulation shows that the SFDR of the buffer is up to 107dB at an input clock of 250MHz with an input signal of 10MHz. A 14-bit 250MSPS pipelined A/D converter...

The energy managment standards specify in-factory rules of operation control,measurement and recording keeping, and maintenance and inspection points and frequencies of energy using equipment for purpose of improving energy saving. However, it is the researches on energy standard that have been neglected...

The kinematic model of robots is to describe the nonlinear relationship between the position and orientation of the end-effector and the displacement of each joint, which is an important content of robot calibration. The coordinate systems of a SCARA robot are established according to DH method, through...

The blast doors with springs supported are reinforced using flexible supporting principle. The addition of spring support is the new technique for blast doors reinforcement. In order to study response of RC slabs with two edges fixed and RC slabs with springs supported, RC slabs are simulated using finite...

3D reconstruction model of OpenCV is established based on the 3D reconstruction technique of computer vision. The camera calibration, stereo calibration, image correction, stereo matching are used for acquiring disparity map, the 3D coordinates of the target points are obtained by the disparity map,...

Experiments were conducted in order to understand the merging process of co-rotating equal strength vortex pair in channel flow with different pressure gradient environment. Cross-flow velocity measurements were performed at a series of downstream locations under zero, favorable and adverse pressure...

On the basis of studying water-sediment movement in the Lingdingyang sea area, sedimentation characteristics of the trial dredged-trough of immersed tube tunnel of HZMB are analyzed, with 17 groups of underwater topographic survey data and the measured results of fluid mud and silt unit weight in the...

Fault distribution type identification and probability density function parameters estimation are the prerequisite of CNC grinding machine tools' reliability assessment. The procedure of fault data grouping the technique of probability density function parameters estimation based on least square method...

IPv6 backbone Network has been deployed in 2004 in China, such as CNGI, but the main IPv6 network equipment was provided by foreign supplies. Although we are facing the danger of IPv4 addresses exhaustion, but IPv6 Customer Premise Network was not deployed widely, and the applications based on IPv6 Network...

In many large-scale enterprise applications, a complex transaction process needs multiple interactions between clients and servers. Because of this, the request from clients should be forwards to the fixed application server, that is, the so-called session persistence. However, to some extent, it goes...

The paper analyzes the deficiencies of the existing integration methods of AHP and DEA, improves the integration method and establishes a ship- targeting model for ship site supervision based on AHP-DEA method. This paper filters the indicators which covered the main factors that affect the safety of...

In aerospace measurement and control systems, solid-state power amplifier as an important part of the monitoring and control stations for the monitoring station to launch the carrier to provide high enough power to meet the required system EIRP. In this paper, the basic concept and principle of the transmission...

The secondary effluetn of Printing and Dyeing industry wastewater is a typical low load and refractory wastewater. The COD concentration is between 150-200 mg/L. In this pilot study, the treatment effect of lignite-coke and ceramic filter BAF was investigated. By comparison with the laboratory scale...

Based on the traditional data management system and big data management system was introduced, the comparative analysis of the traditional data management system and big data management system from the aspects of thinking method, data storage technology and data processing technology. Make people realize...

Simulated leaching solution of tin anode slime was prepared as electrolyte to investigate the performance of cyclone electrowinning on extraction of tin from solution in this work. The results showed that Sn(II) could be extracted as sponge tin with cyclone electrowinning. Sn(IV) could be extracted as...

With the speeding up of the urbanization steps, along with the pathological development of cities, many practitioners begin to pay close attention to design of ecological architecture. The ecological architecture design methods are discussed in the areas such as selection of building materials, ventilation...

In this study, thermal property of the carbon nanotube (CNT) fibers from chemical vapor deposition synthesis was investigated. Thermal conductivity of the CNT fibers was measured using the “T”-type method; a value of 75.9 WK 1m 1was obtained at room temperature. Temperature dependence of the thermal...

Wireless and passive sensor has an important application in industry sector. This paper designs a spontaneous electricity wireless and passive air velocity sensor, which is based on the traditional three-cup of wind speed sensor. This paper also tests the characteristics of the sensor wirelessly. The...

When the disaster approaches,such as earthquake, landslide, nuclear radiation zone, harsh environment and so on, rescuers can not access to it easily, to solve this,we designed the robot, the robot has six legs, each leg has three free degrees[1]. We adopted the embedded system and servo controller as...

Pesticides enter the nature as a result of human economic activity and represent a major hazard for people's health. As a result of studying production and experimental cartocide pesticide doses on soil microorganisms we have revealed the biodegradation capability of cartocide. In particular, it has...

Radio-controlled (RC) car is an interesting leisure activity. RC car motion is controlled by operator's hand. Left hand is to control the throttle and the right hand is to control the direction. A novel physiological index to assess the learning level of operator is proposed in this article. Twelve expert...

FPGAs are prominent electronic devices used in mission-critical applications due to their reconfiguration mechanism. The mission-critical applications will be used in harsh radiation environments. Electronic devices are susceptible to single-event upsets because of radiation effects. Prior works used...

In this paper, two equations of state, Exp-RK and 81-type Martin-Hou, were chosen and adopted to calculate P-V-T properties of CO2 in supercritical conditions, and the deviations of calculated pressure values from reference values are presented. The mean deviations of Exp-RK equation and 81-type Martin-Hou...

In view of the equipment operation training, a portable equipment virtual training system based on android platform was designed by us. Through the 3D Unity engine technology and the reasonable use of gesture touch technology, the simulation and interaction of mobile equipment were realized, the convenience...

With the increasingly strict requirement for computer system security, access control models have become more complex. Existing models, such as discretionary access control (DAC) model, mandatory access control (MAC) model, role based access control (RBAC) model, and attribute based access control (ABAC)...

Experiment was executed to study characteristics of restoring vegetations after Medicago sativa and Bromus inermis planted on the bare land. The results indicated that vegetations restored rapidly after Medicago sativa and Bromus inermis planted on the bare land in Yanqing county, Beijing. And vegetation...

The effects of diethylene triamine pentaacetic acid (DTPA) on cadmium (Cd) accumulation of hyperaccumulator Galinsoga parviflora were investigated through pot experiment. The results showed that the biomass, chlorophyll content of G. parviflora decreased with the increase of DTPA concentrations in the...

How to confirm the photographing location and the photographing date is an important aspect of video data analysis. Solar shadow positioning technique is a method to confirm the photographing location and date through analysis of solar shadow changes of objects in videos. According to the image-forming...

Vibealgorithm initializes the background model very quickly by using the first frame.However, when the target has been in the first frame, the ghostwill be produced with the initialization.And the original Vibe algorithm has no special inhibition about it.In addition, the shadow of the moving target...

Ta2O5 films are applied widely in semiconductor materials, storage devices, optical devices and many other areas. There are many methods to prepare Ta2O5 thin films. In this paper, we have explored the effects on the properties of films at different experimental conditions in the process of RF magnetron...

This paper reports the preparation and electro-catalytic activity of MnO2 nanotube catalysts for both oxygen reduction reaction (ORR) and oxygen evolution reduction (OER) in alkaline media. The catalysts were synthesized by a simple hydrothermal method under controlling the different temperatures. Results...

The effectiveness of photovoltaic systems is heavily influenced by the performance of Maximum Power Point Tracking (MPPT) techniques. This study provides a comprehensive analysis of existing MPPT approaches, detailing their fundamental mechanisms, advantages, drawbacks, and potential enhancement approaches....

With the development of computer network, there are more and more multimedia real-time transmission methods. The traditional stand-alone multimedia synchronization method is unable to solve out of the sync problems due to the unstable factors in the network transmission. Therefore synchronization method...

Power grid dispatching automation system in future should follow the integrity nature of provincial level power grid. Since we consider provincial power grid as an organic whole, the real physical power grid should be described with a unified model, and its operation should be supported by a unified...

This paper presents a improved predictive current control of three-phase AC-DC PWM converter, which achieves unity power factor, harmonics elimination and DC-bus-voltage constant. This paper focuses on predictive current control strategy of which the control principle and the reason of static phase error...

The PLC control system is used to control and adjust the parameters in the process of high strength steel production, and the working principle and process of PLC control is introduced. Experience of production practice shows that the system has a strong operational and practical, can greatly improve...

The objective aims to study the bonding, deformation and failure behavior of carbon nanotubes-asphalt interface using molecular simulations. The electronic structure and electrical properties of carbon nanotubes modified asphalt (CNMA) were investigated by first-principle molecular dynamic including...

A comprehensive analysis framework of the study of green building incremental cost will be given in this paper, from the perspective of the whole life cycle,we will discuss the concept and characteristics of incremental cost,providing it with overall process,whole stage and a full range of recognition...

Because single energy storage element is difficult to meet the requirements of system for the power density and energy density, this paper uses two energy storage elements, including lithium battery (LB) and super capacitor (SC), to constitute hybrid energy storage system. When bus voltage fluctuation...

Design performance assessment of fire alarm system is to test the design scheme of large complex fire alarm system and determine the degree of satisfaction of the system design objective. The second-grade indexes of design performance assessment of fire alarm system are extracted by principal components...

This paper describes a 1.8V 12 bit 1 GS/s pipeline ADC realized in a 0.18 m BiCMOS SiGe process. The ADC consists of a two-way time-interleaved hierarchical structure. Each sub-ADC consists of one input buffer and T&H with BiCMOS technology which improves the dynamic performance and reduces the converter...

In this paper, to determine whether an economically attractive opportunity exists in space debris removal industry, we establish a Commercial Opportunity Evaluation Model. Based on costs, risks and benefits models, we formulate an evaluation function: COM=Benefits (1-Risk)-Cost. When is greater than...

In this paper, a formation system of mobile robot based on vision location is designed. The system is composed of intelligent mobile robot, vision location computation, wireless communication system and formation control strategy. The global localization of the mobile robot is carried out by the camera,...

To study the human brain through EEG monitoring device the time required into the concentration. EEG data collected from a large number of healthy subjects. EEG record of each participant must be recorded twice on the same day, and one is in a relaxed state, another is state of fatigue. The hardware...

Interpretation of green design concept by modern architectural design is always confined to high-end technology with no reference to the advantages of traditional building materials and construction technology. In the perspective of low-technology strategy and focusing on the expression of green and...

Data-driven modeling method has become an ideal research method in crowd behavior simulation fields. The basic idea of data-driven modeling method is that velocity field generated by the crowd behavior characteristic information. Because of the video data acquisition, the velocity field has its limitation,...

In order to determine the key factors which have an impact on the machining accuracy of a machine tool after its machining errors occur, a different method analyzing the sensitivity of machine tool errors based on the theory of multi-body system kinematics is proposed. Firstly , the method assumes a...

Grassland is one of most important ecosystems in northern China and is threatened by strong land use pressure and poor protection. We selected central Inner Mongolia as a study area to explore spatio-temporal change of grassland distribution in the north of China. Obtaining land use data from remote...