Advances in Engineering Research

Microcapsules containing a curing agent, 2-phenyl imidazole (2PZ), for a diglycidyl ether of bisphenol A (DGEBA) epoxy resin were prepared by a solid-in-oil-inwater emulsion solvent evaporation technique with poly (methyl methacrylate) (PMMA) as a polymeric wall. The former could take more than 3 months...

Entrainment ratio is one of the main characteristic parameters of ejector. Studding on it is of a quiet importance to the compression/ejector refrigeration system. Computational Fluid Dynamics (CFD) is used to simulate the inner flow and analyse the influence of driving fluid pressure and outlet pressure...

The near-tip fields of an anti-plane crack in functionally graded piezoelectric materials(FGPMs) are investigated. To make the analysis tractable as usual, the elastic stiffness, piezoelectric parameter, and dielectric permittivity of FGPMs are assumed to be exponential functions of x parallel to the...

Electric energy has become an important energy source in today's society. However, there has been a lack of safe, reliable and effective real-time fire monitoring solutions for high voltage switchgear, transformers and other critical electrical facilities in power plants and transformer substations....

IOT applications in the field of agriculture is an important part of modern agricultural development, it brings agriculture to digital and information era, and it is an important direction of agricultural development in the 21st century. With the advent of the cloud era, big data has attracted more and...

Based on the voltage-current characteristic of the photovoltaic (PV) cell and PV’s integration technology standards, the more realistic imitational modeling of PV system for engineering application is presented. Through the operation standards of PV system and control of power electronics, the PV power...

At present most of the data mining technology can only on the basis of the past to produce large amounts of data analysis processing, it is difficult to meet the fast pace of society people expect of knowledge novelty. Therefore, this article puts forward the dynamic information of the data mining technology,...

In this paper, ZM21 and ZM21+Ce magnesium alloy extrusion in different processes before homogenization treatment, the microstructure was observed extrusion products and test their mechanical properties, analysis of rare earth cerium and homogenizing influence of annealing process on magnesium alloy ZM21...

This paper introduces a kind of experimental apparatus based on the basic structure and working principle of electric automobile power system. The experimental apparatus is integrated with power system's power battery, controller, DC/DC conversion module, permanent magnet brushless DC motor, motor encoder,...

Main purpose of outliers mining is from a large number of, incomplete, there are all kinds of data, the found hidden in one of the people is not known in advance but potentially valuable information or knowledge. Outlier is a data: deviate significantly from other data, it does not meet the general patterns...

Based on the elastic-plastic static analysis results of five shear wall structure models by using the finite element software ANSYS, this paper compares the structural cracks developing conditions of the two bottom layers of structural components, analyzes the weak parts, weak components and nodes of...

In accordance with the principle of arc expansion and the displacement of projection, the demo and curve model of relationship between tangent and cotangent function shall be designed and drawn. The paper introduces the composition structure of the model, analyzes the main parameters of the system and...

To solve the issue that there is some lack of subjectivity and objectivity in the Traditional reliability assessment of air traffic management evaluation means and by analyzing and finding out the related and essential factors in the reliability assessment process of air traffic management equipment,...

Alkaline peroxide mechanical pulp (APMP) is a kind of high yield pulp that comes with the comprehensive utilization of plant material, such as poplar. APMP has lots of benefits, such as easy preparation, good bulkness, good stiffness, excellent optical performance and good printability. However, it also...

Facing the fierce market competition, more and more enterprises are focusing on product logistics. As an important link in the logistics system, warehouse management is under great pressure. In this paper, AHP is used to evaluate the warehouse management, and the evaluation value of each index is given.

The problem of an anti-plane crack situated in the interface of functionally graded piezoelectric materials (FGPMs) and homogeneous piezoelectric materials (HPMs) is considered under the impermeable assumption of crack surfaces. The mechanical and electrical properties of the FGPMs are assumed to be...

Since China's reform and opening up, China's emerging third-party logistics providers investment main body presents a trend of diversification, management mechanism and market idea is market-oriented But the logistics enterprises of production operations are not familiar with or ability is limited, more...

The objective of this objective was to investigate the biomechanical effects of vibration intervention training on tendon in rats. Sixty rats were randomly assigned to four groups: rest control group, 25Hz vibration training group, 35Hz vibration training group, and 45-Hz vibration training group, 15...

With the development of information technology, especially computer networks, remote acquisition based on the Internet has become a new trend of measurement and control systems. In this paper, a versatile and configurable data acquisition system for measuring engine parameters is presented using the...

IEEE 802.15.3c standard is the first IEEE wireless standard for data rates over 1 Gb/s in 60 GHz band. The dissertation create a simulation system, which adopt the HSI PHY of IEEE 802.15.3c and OFDM modulation method, realize the full process from the transmitter to the receiver. By using three types...

In recent years, with the degree of the aged phenomenon becoming more serious, the nursing homes are developing rapidly, the scale is expanding and the management also tends to intelligent gradually. For the care and management requirement, a location-help system for the elderly based on ZigBee is designed...

Magnetic iron concentrate beneficiation process, in order to improve the grade of iron concentrate powder, electromagnetic magnetic separation equipment can be used to realize. The use of PLC technology, PID control of self-optimization control algorithm, by controlling the magnetic field intensity and...

In this paper, adding different Nd content of ZK20 magnesium alloy extrusion were studied Nd on ZK20 magnesium alloy extrusion and mechanism of influence of microstructure and mechanical properties, and optimization of Nd in ZK20 magnesium alloy added amount, in order to obtain comprehensive mechanical...

The problem of scheduling multiprocessor tasks in a multi-machine environment is considered. Each machine contains a number of identical processors. Each task requires a number of processors on a single machine for its processing. The objective is to minimize the overall task completion time, i.e. the...

The current situation, the need for clustering of data is very large, and the use of traditional algorithm for clustering process often tedious and time consuming is very long, the effect is not obvious. Based on this, this paper proposes a data sets EM probability based on some constraint information...

Automatic Identification System(AIS) is a way to transntificatifer large amount of information, overcoming barriers, resistance to weather influences, with ship shore, boat shipping information networking capacity and close global automatic identification system of the target display. Research directions...

Blueberry anthocyanins are the major active ingredients of blueberry with a variety of biological activities and have widespread applications in the fields of drugs, cosmetics, food additives and so on. However, the instability of blueberry anthocyanins is a big obstacle for their usage. Improving the...

In order to investigate the structural evolution and the capability of resistance to -ray irradiation of natural minerals, the zircon from metamorphic rock in the middle region of Hainan was investigated. The morphologic characteristic of cracked rocks was observed and zircon crystals were selected under...

Three -dimensional model of drag-bar for 2BQ -2 planter was developed through Pro /E the model was then transferred into ANSYS for analysis, and modal parameters of the drag-bar were calculated, natural frequency and vibration features of the drag-bar were determined. Modal frequency was concentrated...

It is hard for the starting and ending date of winter construction to be ensured. Since the periods change every year. A number of construction enterprises ignore its danger without taking winter construction measures during periods so that building project accidents often occur. So, how to confirm scientifically...

The control strategy of the cooling tower is an important factor in the optimal operation of hybrid ground-source heat pump systems (HGSHPS). This paper selected a hotel building of cooling-dominated area as the research object. We selected multiple control operating points of two commonly used control...

Explosive actuated device is one kind of electric-explosive initiator often be used in weapon and aviation and space flight equipments' executing system. As one of the important firing units in explosive chain, its quality affects the safety and reliability of whole system greatly. Therefore, when using...

Additional Smart Switch (ASS) is especially suitable for lighting power saving of existing buildings because its installation requires no wall damage and no rewiring. However, as a new device working in low light environment, it is a challenge for ASS to charge lithium battery with solar panels. This...

A more precise strip theory is adopt for the fist time in calculating the aerodynamic loads ,considering the elevation of the wind wheel spindle, the shearing of wind and the tilt angle of the direction when blades brandish. Subsequently, the dynamic inflow model will be considered separately on the...

ASP flooding has been extensively used in Daqing Oilfield, but due to heterogeneity of second-type layers and the sameness of injection parameters, different permeability zones have different production status. The study focused on the design and optimization of injection parameters of ASP flooding,...

With the development of the Ship Power Network automation, the relationship between the Ship Information Network and the Ship Power Network becoming more and more closed, and it causes information factors will impact the ship's fragile of Power Information Network at the same time, but there are not...

In recent years, all kinds of frequent occurrence of unexpected events, damage is very serious, affect the range is very wide. These sudden public events not only cause great loss of life and property, but also affects the social stability, and even endanger the national security, the economic society...

At present, the wastewater, produced in pulp and paper industry, which contains lignin molecules, is still difficult to treat due to the structure complexity of lignin. In this paper, the industrial alkali lignin (AL) was treated with a Violuric acid(VA)-mediated electrochemical degradation system, and...

According to the nonlinear problem of the trajectory optimization problem of rocket projectile, an improved optimization algorithm combined the direct model parameterization method and the sequential quadratic programming method was proposed. The direct numerical method was presented to converts the...

The particulate emission of GDI gasoline haven’t been paid special attention to due to the lower significantly particulate emissions than that of diesel engines. But in the last few years, some studies have shown that the particulate of gasoline engine have carried more harmful substances which can penetrate...

The examination mode of course is determined by the teaching contents, teaching methods and teaching purpose, while it also has an important effect on the teaching. In order to promote the learning of professional courses, this paper explores the evaluation ways of mechanical and electrical professional...

A new single-phase of the harmonic current detection method and compensating current control method are presented in this paper. It’s a simple algorithm and achieve more，fast response and real-time. This detecting method is fit for t single-phase parallel active power filters. The simulative result shows...

Software process management system, the needs analysis is the basis for all work and source, is a top priority. Requirements analysis, software developers, project leaders and team members and between the software developer and software on the client side, requires adequate and convenient communication....

Based on the fact that aggregate surface features have a great effect on the performance of concrete, a method for improving concrete performance by modifying aggregate surface features was proposed. Specifically, with aggregates immersed into concrete interfacial agent (CIA) suspension to increase the...

Composition and main material of seawater cooling systems of power units are stated briefly. Some corrosion and protection examples of seawater cooling systems are summaried. In order to protect overall seawater cooling system, the suitable material should be chosen firstly, and surface treatment such...

In this paper, a new lattice model of traffic flow with the consideration of the aggressive-driving behavior is investigated by Xiaoqin-Li et al. The model is studied by using linear and nonlinear analysis method. A thermodynamic theory is transformed to describe the phase transition and critical phenomenon....

This paper not only analyzes the research status of the wind turbine tower and its infrastructure, but also studies dynamic characteristics of the wind turbine by applying to the finite element analysis. In addition, the tower and the infrastructure are reasonably simplified by adopting the finite element...

Since the Japan's A.NISHI designs a wall-climbing robots prototype which based on the principle of negative pressure in 1966, wall-climbing robots technology has been rapid development in the world. No matter from the aspects of adsorption methods, movement forms or application ways have made considerable...

Using percolation mechanism, the geological factors and technological factors that affect the fracturing fluid were determined. Similar geological conditions and process factor, increased liquid yield of the production wells are also similar. However, the result of the oil increment is very different...

With the development of electronic technology, embedded system in domestic and industrial fields has been widely used, such as smart appliances, mobile computing devices, network equipment and industrial control field, which greatly improves the efficiency of production and life of people. On the other...

Operation of cargo ship transport in the production of a very important link. Stowage of containers directly related to safety and efficiency of maritime transport, how many feasible options in seeking a relatively optimal stowage plan to ensure ship safety, reduce transport costs, improve operational...

The paper study object is the CNC servo system, and it presented three closed-loops control strategy based on PMSM. Through dynamic mathematical model of current loop, rotational speed loop and position loop were established and simplified. The closed-loop regulator was designed. The system was corrected...

Agriculture is a giant and complex system, and agricultural problems are closely related to the time and space information. Information agriculture is based on the soil characteristics of crop growth, adjust the input of crops. The promotion of precision agriculture can improve the productivity of the...

This paper presents a long distance transmission circuit of high precision micro-seismic signals for mines. This circuit implements current loop and isolation gate to improve the precision of mine micro-seismic signal acquisition and data quality. The test result shows that the transmission circuit can...

the application of aluminum alloy bars are widely. The main problems in the production process is coarse grain. Through the analysis of the characteristics of the metal in the process of extrusion forming, introduced the effect of the die structure on the degree of deformation and press stress and the...

This paper briefly introduces measurement principles of Nondispersive Infrared (NDIR) carbon dioxide (CO2) sensors as well as summarizes performance characteristics of NDIR CO2 sensors, factors affecting the accuracy, calibration methods, market situations and trend of NDIR CO2 sensors.

By analysing the vibration response of two mutual coupling structures between three basic elements ‘spring, damper and inerter’ on a single degree of freedom system. Focusing on the vibration isolation effect, the optimum coupling relationship of ‘spring, damper and inerter’ three basic components applied...

Based on the analysis of the frequency modulation capability of conventional wind turbines and wind turbines, this paper proposes a new type of frequency control strategy for wind farms, which is based on the layered architecture. By means of reserve control, it can provide fast active power support...

Skeleton-dense cement treated stone (STCB) may occur segregation; a laboratory test was carried out to study a specific segregation which could be named migration temporarily in this paper. Two kinds of STCB were tested, two impact factors were identified, and the influence of migration on mechanical...

Large-sized flexible structure is widely used in industrial production areas, such as aircrafts, automobiles, ships and so on. There will be dynamic deformation in working process which will affect the normal use of structure carrier. In addition, current deformation measurement methods have certain...

Necessity, history, actuality, problems and countermeasures, industrial application prospect of seawater used as cycling cooling water are analysed. When seawater is used as cycling cooling water, waste water discharge quantity and intake quantity of water are small, engineering investment and operation...

The polycarbonate screw cap part had cracking problem during storage, which mechanism needed to be studied. The effect of environmental atmosphere and stress-loading storage on the intrinsic stress and its distribution in polycarbonate screw cap part was investigated in the paper. The analytical results...

In this study, four laboratory-scale horizontal subsurface flow constructed wetlands (HSSF CWs) were designed to reveal the effects of cattail fermentation broth and Typha latifolia on nitrate removal. The results showed that both the addition of cattail fermentation broth and the presence of Typha latifolia...

This paper introduced the importance and workflow of Chinese web page classification. It studied the defects of chi-square statistic algorithm and improved it. At last, it verified the improved chi-square statistic algorithm combined with Bayes algorithm through a series of experiments. The experimental...

The problem of scheduling jobs with sizes on batch machines is considered. Each machine can process several jobs as a batch simultaneously as long as the total size of these jobs does not exceed the capacity of the machine. The processing time of a batch is defined to be the longest processing time of...

As a long-range precision guided high-tech weaponry, the cruise missiles have the advantages of strong penetration prevention capability, diversification of tactical use, and economical efficiency etc. After the Gulf War, many countries competed for research and develop the cruise missile. In this paper,...

Analysis of simulation data is purposefully collected data and analyze data, make this information or knowledge of the process is conducted in order to better understand and improve the system, is the focus of simulation problems. Due to existing simulation and data analysis methods, lacking to deal...

Common spatial pattern (CSP) is a popular method for 2-class motor imagery electroencephalogram (EEG) classification. Filter bank common spatial pattern (FBCSP) is an improved version of CSP by introducing multiple frequency filters and a stage of feature selection. In FBCSP, methods for the feature...

Exsiting indoor localization approaches have poor accuracy because of multipath effect. In this work, we utilize Perpendicular Intersection(PI) means, establishing the model o f multipath effect on signal propagation . The results show that multipath effect can be overcomed by PI and high accuracy is...

The basic properties, composition, and structure of four base bitumens: A1, A2, A3, and A4 were analysed. The stability of emulsified asphalt was investigated by means of residue content difference tests. The relationships between the stability of emulsified asphalt and the chemical compositions of the...

It takes distinguishing the two beveloid tooth surface as starting point and compares the differences of tooth profile from some aspects, such as forming process, sectional profile and the shape of the contact line. According to the tilting processing principles of the rack cutter and slotting cutter,...

Steer-by-wire is the latest technology in vehicle steering system. This paper reviews the domestic and foreign development of steer-by-wire steering system. The structure ,characteristics and working principle of the steer-by- wire steering system were analyzed in detail. At last, the solutions that...

Soft ground passing ability is an important indicator of vehicle maneuvering performance,in this paper,the vehicle characteristic parameters and soil parameters that affect vehicle passing ability,are analyzed,and the vehicle soft ground passing model is established.Some multi axle vehicle passing ability...

The thesis obtains the data with the help of Kinect, combined with the platform of unity3D to research 3D virtual fitting. Using the stroke and a matching algorithm of hidden Markov chain model to establish the corresponding relationship between contour of the human body and the human body model. It...

Multiporous CuCo2O4 microspheres have been synthesized via a facile solvothermal method and used as bifunctional electrocatalysts for rechargeable Li-O2 batteries. The Li-O2 battery utilizing CuCo2O4 shows a higher specific capacity of 5607 mAh g-1 than that with pure Ketjen black (KB). Moreover, the...

In this paper, a calculation model of 491Q gasoline engine working process was established using the engine one-dimensional simulation software BOOST, and through the analysis on the curve of pressure fluctuation in the front of the inlet valve at the speeds, the relationship between the late closed...

Based on the theory of fluid network, the mathematical model of the self-excited oscillation pulsed water jet device was established, theory analyses the frequency characteristic of self-excited pulsed water jet nozzle on double chambers. The result shows that structural parameters greatly affect natural...

A fixed-pitch wind turbine power performance improvement technology was studied in order to solve the problem that the actual output of fixed-pitch wind turbines is lower than the rated output in the plateau areas. Considering with the environmental characteristics in plateau areas, one blade-adding...

This paper discusses the uncertain portfolio selection problem when security returns are hard to be well reflected by historical data. In portfolio selection, risk analysis is one of the most important topics and research on quantitative definition of risk remains core of the topic. A new risk measure...

Hand gesture recognition is an important topic in the field of computer vision, it has a wide range of applications, such as interactive games and sign language recognition, etc.. With the launch of the depth sensor, the task of hand gesture recognition becomes more simple. In recent years, there are...

Power transformers are key components in the stable operation of electric power system. Reasonable arrangements of maintenance strategy according to transformers’ working condition can decrease the loss lead by transformers’ faults. The dissolved gas analysis (DGA) is the widest technique used in transformers’...

Modular self-reconfigurable robotic system has been presented for more than 20 years. We will review the development of the system in this article. There are many categories of the system. Each category is introduced in detail in this article, and typical examples of each categories will be presented....

Reducing the energy consumption of villages and towns and raising their energy efficiency is one of the priorities for the development of sustainable buildings in China. This article takes the village and township houses in hot summer and cold winter zone as the research object. Based on the analysis...

Steel samples under different pulse magnetic field are produced using self-developed pulsed magnetic field generator, and the discharge voltage of the pulsed magnetic field selected from the experiment is 0V, 40V, 80V, and 100V four gradient levels. The morphology of the microstructure is photographed...

In view of actual requirements for livestock and poultry breeding environment monitoring, an environmental monitoring system based on Internet of Animal Husbandry Things (IoAHT) was introduced in this paper. The environmental monitoring system includes environmental monitoring station, information management...

With the development of the modern society, new energy technology has a great potential to be the new driving force. In order to make full use of the wind energy in the high air, based on CFD method, using the commercial software FLUENT and the standard k- turbulence model, an axial-flow wind turbine...

Urban redevelopment is a very controversial topic in China, meanwhile is also the trend that social and economic development continue to promote. Three main bodies are concerned in the reconstruction of old city, including local government, the estate developer and local residents. Because of the phenomenon...

The test of the heavy vehicles is depended on the experience, and is lack of quantitative citation index. This paper introduces the research of the oil spectroscopic analyzer for power transmission systems on different roads. The wear of impact factors of different road to power transmission systems...

This study focused on electrolysis of refractory malachite green waste water with three-dimensional electrode. In this research, high-purity graphite was used as the cathode, titanium-plating metal mesh as the anode, while coal column, coconut shell granular activated carbon and catalytic Titanium dioxide...

According to the morphing requirements, this article proposes a morphing glide aircraft with high environmental adaptability. Based on Kane’s Method, six degree-of freedom dynamic model is built. The automatic disturbance rejection control technology is adopted to realize stability control of longitudinal...

Tornado always exists like funnel shaped, In this paper, according to the basic principles of tornado to establish a physical model of tornado. According to this model, a tornado of angular velocity, density and the spin turn radius in air layer parameterized description. Based on this model, the relationship...

Using natural dye Ginkgo leaves as raw materials, the dye liquid was extracted by microwave method, water bath method and ultrasonic extraction method, and the suck photometric of this three extraction liquid were tested. The 25 tex cannabis/mulberry fiber/wool 60/20/20 blended yarn was dyed by the extracted...

The diversity and complexity of large public buildings, our country's local climate, economy, life habits variation result in a lack of basic data to support energy-saving operation standard, energy saving technology for the reconstruction of the applicability and the lack of practical test, which leads...

Deforming process of FS (flexible spine) tooth is studied, its bending deformation and shear deformation are analyzed, and stiffness expression is concluded when FS tooth meshes into completely. FS cylinder torsional stiffness is analyzed with theoretical calculation and finite element analysis, the...

The formation energy, electronic structure, density of states and optical properties of ZnO doped by Mg in substitutional and interstitial positions are studied. It is found that the band gap of ZnO is enlarged by doping Mg in the substitutional position, and the ZnO doped by interstitial Mg becomes...

According to the maximum hollow circle strategy of the Voronoi diagram, Starting from the basic principles for equipment allocation of the chemical reconnaissance system, the capability range of the three kinds of chemical reconnaissance nodes is determined by the ideal model of chemical reconnaissance...

This paper proposed the design idea and the development of an online curriculum system based on the Browser/Server architecture from the perspectives of system analysis and design. This system can efficiently manage and update the teaching contents. To solve the difficulty traditional online curriculum...

The Cu2-xSe nanopowder was synthesized by the hydrothermal method. The electrical transport properties of Bi1.975Na0.025Ba2Co2Oy + xwt% Cu2Se (x = 0.00, 0.25, 0.50, 0.75, 1.00, 1.25, and 1.50) ceramic samples prepared by the solid-state reaction method were investigated from 300 K to 898 K. The Cu2-xSe...

With the development of China's transportation industry and the construction of traffic tunnels, tunnel disaster prevention has become an increasingly important research topic. In this paper, we compared the two kinds of smoke prevention modes in the vertical tunnel with the vertical ventilation and...

A new method to identify voltage sag sources in power distribution network with harmonic is proposed, this method use the theory of EMD to decompose the voltage signals, and obtain a series of IMF. For different voltage sag sources, the IMF's complexities are not the same, so the concept of the EMD energy...