Advances in Engineering Research

The working process of the furrow opener is the state of movement between the working parts and the soil particles. The discrete element method (DEM) could not only truly express the geometrical characteristics of the soil particles but also be suitable for the experimental study on the furrow opener....

Base on Markov model, the quality state of Guanting Reservoir is divided, the initial matrix is formed, the index weight by entropy weight is obtained, and the probability transition matrix of water quality variation trend is constructed. Then this model calculates the degree of absolute and comparative...

This paper provides a set of methodological tools including an assessment of the efficiency of introducing new technologies in vegetable farming, the main parameters of business entities, and a methodology of estimating the criteria, whose aggregation allows to define the strategic priorities of an organization's...

Measuring soil water content, soil water repellency and analysis spatial variation of the sugarcane land by combining classical statistics and geo-statistics, in this article. The results showed that: the means of soil moisture content and soil water repellency were smaller, in the case of long time...

Surface soil moisture is a significant parameter in environmental systems. A new sensor capable of estimating surface soil moisture from reflection data is presented, called near-infrared reflection sensor. Relative reflectance method is used for prediction model development. The present study investigated...

The problem of determining the roll angle of a fast rotating object has been analyzed in the paper. Possibility of creating a fast rotating single-axis orientation system that was able to determine the roll angle for a long time with minimal errors, based on data from various sources, has been considered....

In this paper, we prepared Ni/C, Pd/C and Pd-Ni/C binary alloy nano-catalysts by the impregnation-reduction method. The structures of all catalysts were characterized by XRD and TEM. The electro-catalytic performance of all catalysts on H2O2 reduction were studied by cyclic voltammetry(CV) and linear...

For investigating the effects of gradient energy coefficients on the void-matrix interface thickness during Czochralski silicon single crystal, an established phase field model and the corresponding program code were used to simulate the evolution process of a single void. Based on the given criterion...

To solve the problems of nonlinear and input constraints in the iterative learning control system, using real-coded shuffled frog leaping algorithm to solve optimization problem1 in iterative learning control, .A shuffled frog leaping algorithm(SFLA) based optimal iterative learning control is proposed....

Attitude control system of the rigid satellite is a coupling and uncertain nonlinear system with multi-inputs and multi-outputs. This paper presents a sliding mode controller for the satellite attitude system with limited control input and external disturbances. The design strategy can guarantees that...

To improve the efficiency of the query on the data of resource description framework (RDF), the method of storage and management of the data at home and abroad is studied. According to the characteristic of the data that the number of subjects and objects is large and the number of attributes is small,...

Wireless remote control robot car could play a special role in the hazardous environment operations and search & rescue personnel. A multi-function smart car with Bluetooth remote control is selected as my graduation thesis subject. The design of the system hardware circuit schematic and PCB diagram...

Zn1-xMnxFe2O4(x=0, 0.15, 0.25, 0.35, 0.45, 0.55, 0.75, 0.85) ferrites were synthesized by sol-gel combustion method with citric acid as complexing agent, and mole ratio of metal ions and citric acid is 1:1. All samples were sintered by 550 . The structural and magnetic properties of MnZn ferrites were...

The hot ductility behavior of two kinds of 800MPa grade Ti/Nb-added weathering steel has been investigated by using Gleeble3500 thermo-mechanical simulator. The tensile strength (TS) and reduction in area (RA) were acquired to draw hot ductility curve and hot strength curve. SEM fractographs and microstructures...

Cytotoxic activity of Artesunate(ART) was determined by MTT assay at various concentrations ranging from 0 to 100 mol/L on Hela cells. The apoptosis effect of Hela cells treated with ART was observed by a phase contrast microscope. The Apoptosis and its mechanism induced by ART were also studied by real-time...

It has great significance for the quality of aviation image in military image processing system. But it cannot avoid image degradation encountered in the process acquired. In order to get the high-quality aviation image, in this paper, we firstly analyze the main factors of image degradation, and then...

Method of feature selection was used in this paper to select dirving factors before models of land use change carried out simulation.Two different scenarios were set inthe study area- main districts of Chongqing Scenario 1) carried out land use simulation involed all the factors 2)carried out land use...

In this paper, a diffractive optical element(DOE) is designed as a spectrum splitting and concentrating element which is used in lateral multi-junction solar cells. The performance of the DOE by simulation indicates that optical efficiency over 80% can be achieved based on this design. The relationship...

In this paper, the blocked waterborne polyurethane crosslinker were prepared by polyaddition reaction with isophorone diisocyanate (IPDI), polypropylene glycol-2000 (PPG MW2000) and dimethylolpropionic acid (DMPA) as internal emulsifier, sodium bisulfite (NaHSO3) as blocked agent in presence of dibutyltin...

The bridge prestressed concrete continuous rigid frame bridge is a kind of good integrity, reasonable force, construction technology is mature, moderate cost, spanning ability and driving comfort, etc.And in the actual project got a lot of applications while further development prospects are very bright....

With the aim of drawing the knowledge map and understanding the research hotspot on intelligent system, the articles published from 2010 to 2015 have been searched with the keyword “intelligent system” based on the Web of Science database. The knowledge map of intelligent system was drawn by utilizing...

By means of Lyapunov function and the finite-time theory, the problems of finite-time boundedness and passive control for a kind of nonlinear system described by T-S fuzzy model are studied. The sufficient conditions, which maintain finite-time boundedness and satisfy the passive control performance...

According to the characteristics of the concrete fracture process zone, a damage and fracture model for concrete, which combines damage mechanics and fracture mechanics is proposed. This model takes the initial fracture damage threshold as the incipient cracking criterion, and takes the unstable fracture...

A simultaneous determination method for four kinds of Fusarium toxins (zearalenone, deoxynivalenol, T-2 and HT-2 toxins) in flour was established using high performance liquid chromatography-tendem mass spectrometry (LC-MS/MS). Samples were cleaned up with MycoSep®226 multifunction purifying columns...

Digitalization of low-pass filter produced from first-order inertia link is carried out firstly in this paper. Then an improved algorithm is proposed to achieve better low-pass characteristics by weighted smoothing the first n-part of the input and output data and using the smoothed data instead of n-1...

In order to enhance the degradation ability of ozonation process, catalyst used in catalytic ozonation was studied in this paper. NaY zeolite was selected as the carrier of catalyst. Catalysts prepared with different conditions were added in reaction solution to find the catalytic ability of catalyst...

In order to measure the success of smart growth, we establish a scientific comprehensive evaluation model and take Miami as example. Firstly, We build the evaluating index system. The first layer includes eight indexes such as people density, urban floor area ratio, land productivity and so on. The second...

In this experiment, the intermetallic compound of pure aluminum / Q235 low carbon steel was studied by explosive welding. The thickness of IMC in aluminum / steel interface under different heat treatment temperature and heat treatment time was studied. It is found that the thickness of the intermetallic...

Power Factor Correction (PFC) technology is a key means to improve system energy efficiency. This paper conducts a systematic review and analysis of Boost-type active power factor correction technology. Firstly, it sorts out the topological structure and working principle of Boost-type PFC, and expounds...

Various types of low-level indexes and uncertainty of evaluation information due to quantitative index and qualitative index exist in converter transformer condition evaluation. To solve this problem, a novel converter transformer condition evaluation approach based on the belief rule base inference...

Nowadays, the Direct-Sequence Spread Spectrum (DSSS) technology has been widely used. It's urgent to research blind detection algorithms on DSSS signal. In this paper, a new method is proposed. It based on a combination of wavelet noise reduction and Estimation-based Time-domain Sliding Correlating Accumulation,...

To estimate the Melt Index(MI) value accurately and quickly in the quality control process of polypropylene (PP), the paper proposed a forecast model of MI (PHKT-GRBFNN-CRBFNN-HMM) integrating the technologies of data mining, model constructing and two error compensation based on the data. Firstly applied...

This paper proposes a new fault diagnosis strategy for analog circuit after analyzing diagnosis method based on the BP neural networks and AI-ESTATE standard. At present, The artificial intelligence algorithms such as SVM and BP has been widely adopted in analog circuit fault diagnosis, but it is not...

Pavement structure directly affects the performance of the road, and the high altitude and low temperature of the Qinghai Tibet Plateau has a great influence on the pavement structure. Based on the investigation of Qinghai Tibet highway, Sichuan Tibet highway line five, summarizes the existing pavement...

The peridynamic is a kind of unique theory which can deal with continuous models, defect of crack and particles in a single framework. It does this by formulating problems in terms of integro-differential equation rather than partial differential equations. This theory can be used to investigate the...

Determining the vertical wheel-rail force by measuring rail displacement is approved to be feasible in this paper. Wheel-rail force data is collected following the common way firstly, i.e. strain gauge is pasted on the rail to measure the strain. During the test, different vehicle running speeds through...

This article will conduct the research to this question, in order to portray the decision-makers dilemma in the decision-making process under the uncertain condition, this paper defines the following concept: policy-makers plus regret degree, policy-makers negative regret degree and policy-makers weighted...

The experimental material is ‘Red Globe’ grape that is taking shelter from rain. Use different concentrations of SUNRED on the grapes, when the color of grape is turning. Then study the effect of color and quality of fruit. The results show that, SUNRED1000 times could promote the grape coloring. The...

This study adapts a nonlinear dynamic predictive model for quadrotor UAV trajectory tracking; which involves translational and rotational motions, the gravitational contribution and gyroscopic impact. In this implementation, Initially construct the mathematical model of UAV dynamics, then derive the...

According to water scarcity, using the system dynamics (SD) theory as a guide, this report makes some quantitative and qualitative analyses on the trend of water resources carrying capacity (WRCC) in Beijing. According to several corresponding reasons, counter-measures are proposed to diminish the degree...

In order to improve the concentration and pumping volume of gas control drilling hole in the cross-cut uncovering area, reduce the pre-pumping time of outburst coal seam, principle of broken coal based on high pressure water jet, the mechanism of high pressure water jet punching to relieve pressure and...

Because of the circumstances of diffused illumination and light assimilation, underwater photographs typically encountered a modest difference in color saturation due to color immersion. When underwater photos with similar shade colors are captured under different lighting situations, restoring and enhancing...

According to the movement relationships and geometric relationships of cylindrical roller bearing parts, the mathematical model of the radial runout of bearing outer ring is established. The principle of algorithm for the radial runout of bearing outer ring is analyzed. Numerical simulation of the motion...

Transportation management is essential for the region planning and governance. Transport planning plays an important role in designing the city plan. The strategy of transportation of sustainability is also indispensable for the construction of eco-cities. This paper mainly focuses on evaluation of the...

Metamorphci phyllite is fragile, the gradation show large variation. Different pressure levels are selected at first to make sure the stable gradation. The test results show that 600 kPa pressure level meets the requirement and metamorphic under this level is choose for further compaction analysis. Compaction...

Magnesium alloys were welded by friction welding. The mechanical properties of the joint were investigated; the effects of welding parameters on flanging amount, wear amount and tensile shear load of the joints were discussed. The results show that the joint strength increases with the increase of friction...

In this paper, a type of shield tail sealing grease, composed of basic oil, thickening agent, lubricating grease thickener, lubricating grease, biodegradable fiber and inorganic fillers, was prepared by means of a physical mixing process. In addition, various properties such as density, cone penetration,...

The Carboniferous carbonate rocks at eastern margin of the Pre-Caspian Basin originally depositing at the passive continental margin of Eastern European craton are closely related to accumulation of lithologic reservoirs. Three kinds of lithologic reservoirs, i.e. sedimentary-related, diagenetic-related...

When rock-like materials are tested under triaxial compression[1] ,two kinds of failure may happen,that is,ductile and brittle failures.The essential reason for rock failure is the relative displacement among mineral particles making up rock.Generally, rock failure can be either tensile or shear,which...

Since the outbreak of pandemics, acute hemorrhagic conjunctivitis (AHC) has caused extensive attention in the field of public health. The purpose of this study was to quantitatively evaluate the influences of super spreader, passenger source and social relation structure on the AHC transmission in terminal....

Blade shape plays a critical role in determining the energy conversion efficiency of wind turbines. This paper investigates the relationship between blade geometry and wind energy conversion, analysing how parameters such as chord length, twist angle, and camber affect aerodynamic performance. With global...

Now, the highway toll system still uses a single license plate recognition, this method has a problem of inaccurate identification. For this kind of situation, this paper put forward to increase the appearance of the vehicle feature information and can improve the accuracy of recognition. In this paper,...

Proteins possible effects on roots have received little attention. Here, we investigated how externally supplied protein influences root formation of Cinnamomum camphora cuttings. Cultivation matrix was composed of vermiculite, perlite and river sand based on the proportion 2 2 3. Softwood cuttings were...

The original data about the operation status of IT infrastructure is stored in the log. It can not only reflect the operation status of the whole system but also provide the basis for the management and optimization of IT operation and security analysis. This paper has summarized the infrastructure of...

CCD (charge coupled device) is one of the mainstream of image sensors, it plays a more and more important role in the real-time image processing and recognition. For airborne CCD image recognition problem, this paper proposes an enhanced method of wavelet transform. It can real-time processing of airborne...

A kind of DFT process used for signal operation in real time is proposed. The complicated environment for modern electronic counter and the appearance of new radar systems put forward a new lesson to sub-collect the signal and track the signal, especially in real time. With the background of high speed,...

Subjective well-being (SWB) is now attracting more and more attention from policy makers. Traditional way of measuring SWB by self-reporting based on questionnaire has the limitation of small sample size and low survey frequency. With the rapid spread and use of social media, the online posts of users...

Landslide monitoring is a fundamental work for landslide hazard prediction and landslide treatment. The quality monitoring work will affect the correctness of the decision for disaster prevention. Base on the development of landslide monitoring technology in Zhejiang Province, the paper introduces the...

Automobile assembly workshop has complex process; it usually requires the use of special spreader. Due to highly intensive work, the security requirements of the job are always in high demand, so safety and reliability of the spreader is essential. In this paper, finite element analysis and NDT were...

By researching the development process and the status quo in Bei 301 block, this paper sets the three-dimensional geological model, fits the actual production data through using numerical simulation software, and determines the distributions of remaining oils ultimately. On this basis, this article designs...

One of the important equipments in substation switchgear and under high load condition, often appear contact temperature is too high, reliable power supply directly affects the user, or even serious accidents. Based on the comprehensive analysis of the current commonly used temperature measurement technology,...

With the development of our social economy and the advancement of urbanization, China's urban traffic demand continues to grow rapidly, more and more cities are affected by the traffic jam. In order to solve the urban traffic problem fundamentally, many cities are embarking on the construction of rail...

The article is devoted to theoretical studies of defecate distribution over the soil surface by a centrifugal working tool. Defecate has physical and mechanical properties which are similar to those of mineral fertilizers. Therefore, for its distribution, fertilizer spreaders with centrifugal working...

The wind board control system is designed, taking MSP430F149 as the core control chip and STC89C52 as the auxiliary control chip. This system adopts 12864LCD as the display, selects the working mode and sets the wind board position angle by the button. And the system detect the change of wind board's...

In recent years, the phenomenon of "haze, air pollution and traffic jam" has gradually deteriorated, which seriously affects the health and safety of residents and the efficiency of logistics operation. Data show that: 2016, China's automobile exhaust emissions of 120 million tons, carbon emissions of...

There is a high requirement for the growth environment in the deer breeding , Have a great impact on the antler growth, especially temperature, humidity, illumination and other environmental parameters. This study designs a deer house monitoring system based on Internet of things, able to monitor and...

The thermodynamic data of atmospheric pressure were calculated by using HSC chemistry 6.0 software, and the thermodynamic conditions were discussed theoretically.It indicated that the simultaneous reduction of alumina and silicon oxide by carbon at high temperature was beneficial to reduce SiC and Al4C3...

The system is based on the motor controller L298N chip, near field communication RC522 and network communication W5500 module as the core device to MSP430F5529 microcontroller as the system master control unit, control relay (motor) work, RF reader RC522 read data, 12864 display Content, network module...

In this paper, the wind turbine operating environment studied, wind turbine fires detection method based on information fusion. The simulation tests proved the feature layer can be well judged the probability of fire, smoldering fire probability and no fire probability. And in the decision-making drawn...

The High-speed development of Self-regulation temperature control technique gives a lot convenience to most people. Essentially people feel the temperature of water by personal perception. This article discusses the circumstances that people use personal feeling to make a judgment and manual control...

In the paper, new principles and methods for determining the transfer characteristic parameters for a micromechanical angular velocity sensor, as well as an assessment of the significance and efficiency of these parameters, have been described. The structure and algorithms for obtaining and processing...

The process for the synthesis of flyash-based superfine zeolites-Y (FAZ) were presented, which basically included the alkaline fusion treatment of fly ash (FA), the gels formation by dissolved and aged, following hydrothermal crystallization. A detailed investigation was carried out to determine the...

Recommender systems are used to recommend items for user in e-commerce with information overload. Utility-based recommender systems build multi-attribute utility function of user and recommend the highest utility item for user. Some utility-based recommender systems use rating for items to extract utility...

Structural damage detection and diagnosis is a very important factor to the structural safety. Wavelet transform combined with artificial immune algorithm can be used for improving the application of artificial intelligence algorithms.for structural damage detection.The result of the simulation and verification...

Differential evolution (DE) is an algorithm highly effective in solving problems with continuous variables while not applicable to problems with discrete variables. To overcome this disadvantage an elite-guiding binary differential evolution (EGBDE) is proposed. Inspired by the mutation with GA which...

The paper presented a new simple and novel design of a bionic frog-hopping robot to achieve continuous hopping. The flexible jumping leg is made by spring leaf of C-shape, which is beneficial to increase the storage of elastic energy and improve service life. The synchronize compression process of two...

This article takes the planning for Baicheng Industrial Park for the main object. Starting from the theoretical research, the paper conducts a deep investigation and analysis of the actual development of the Baicheng Industrial Park. With the method system of qualitative and quantitative analysis, the...

Along with the wide application of high and new technology, the modern war mode has gradually changed and tasks of logistics equipment support are increasing, which will put forward higher requirements for logistics equipment support sensitivity, rapidity, accuracy and visualization, and making further...

Damage identification of structural components has always been one of the key issues in the field of structural health monitoring, which is of great significance to ensure the stability and service life of components. Although various machine learning and deep learning algorithms have given many feasible...

Online examinations have become an integral component of modern education, offering flexibility but also introducing significant challenges related to academic integrity. Cheating in an online setting is a serious issue that can undermine the credibility of the educational system. This study, therefore,...

In order to avoid the negative impact of field flat blasting on the surrounding buildings and foundation pit, using deep-hole rupture control scheme. Design of blast hole orifice spacing is 3.0 m, row spacing is 2.5 m; diameter of hole is 90 mm, hole depth between 11 m to 12.6 m; adopt rock emulsion...

A series of numerical simulations had been conducted on nozzles with different divergent geometrical parameters, and each nozzle’s flow field had been simulated under different working conditions. The effects of divergent angle and divergent wall length on nozzle performance had been analyzed. The results...

In recent years, the field of electric vehicles is the first application of the new energy industrial technology platform, with the continuous progress of human science and technology, the future car development is the inevitable direction of electric drive electric vehicle. However, wheel independent...

We designed and evaluated a kind of Agkistrodon DNA detection kit. Bioinformatics was used to investigate the characteristics of cytochrome b (cyt b ) gene in Agkistrodon. A series of primers were designed, and sequencing and blasting in conjunction with PCR technology were applied. Its’ indexes including...

On the basis of the concept, contents and goals of the agricultural cleaner production in China, four major environmental problems in agricultural development and the problems of agricultural cleaner production in our country was pointed out, moreover, the necessity and the measures of developing agricultural...

In this paper, the problems existing in different bidding stages of each bid participant are first sorted out through the list,Then put forward the corresponding improvement measures to the problems in the bidding And put forward suggestions for the bidding activities in our country,ensure that the transaction...

The increasing number of human populations will also increase the transportation mobility. This case is clearly visible in a higher education where the increasing number of students can affect the number and types of transportation in the campus area which later on could cause the mobility disturbance...

Streptococcus mutans is a major cause of dental caries. The gold standard for antimicrobial mouthwash is chlorhexidine gluconate 0.2%. If used long term, chlorhexidine gluconate might induce an allergic response as well as tooth discoloration. The essential oil of Indian Sandalwood is a natural product...

Polystyrene foam (EPS), commonly known as benzene board, foam board, is widely used in architectural decoration, road construction, the film set, a lot of fields such as packaging boxes, has a broad market need and the use value. For EPS plate mainly have three kinds of different processing ways: the...

Event is the basic unit of knowing, remembering and understanding the real world. Event is regarded as the basic unit of knowledge representation. We detect event relation between two events for some Chinese texts by matching event relation pair table, which are constructed based on the CEC2.0 (called...

Through improved select tactics and genetic operators, the accelerating genetic algorithm (AGA) and simulated annealing algorithm (SA) were combined to form a new algorithm called accelerating genetic and simulated annealing algorithm (AGSA). A modified method to develop the flow rate prediction model...

The traditional optimal path is the shortest route, obviously, if condition of each path is different, this method has certain disadvantages. This paper presents a new method of selecting the optimal path with the background of refugee migration in the Middle East. the traditional optimal path is the...

Nuclear power station PI controller board is used for complex nonlinear and adaptive control loop. The board realizes the classic PI control, eliminates the interference of the input signal may be produced. In this paper, alpha-stable noise is introduced into the input end of the controller circuit,...

In this paper, through the Xinji a mine surface drilling borehole pressure relief gas for practical investigation and study, analysis of the layout of the ground drilling, the influence scope of ground drilling drainage is investigated and analyzes the drainage effect and the economic benefit brought...

The electromagnetic relay is one kind of controlling electric appliances. The electromagnetic relay is also a kind of electromechanical product. It has its superiority over other controlling appliances because of it’s highly insulation with open circuit and its absolutely little resistance with closed...

This paper mainly studies the method of extracting web data entities based on domain. Through the analysis of real estate industry websites, a topic-oriented topic extracting model is proposed, and the corresponding search strategy is given. In addition, for the case of depth information, a sorting-based...

Based on the vibration dynamics modeling for the single stage gear of transmission system, this paper is to understand the mechanism of transmission rattle. The dynamic model response using MATLAB and Runge-Kutta algorithm is analyzed, and the ways for reducing the rattle noise of the automotive transmission...

A novel big data-driven Prognostic and Health Management (PHM) method of Unmanned Air Vehicles (UAV) based on IoT was proposed. The method innovatively using big data of IoT analysis with health states to build the reference indicator, through probability-based techniques, and produced a degradation...

Currently, the development of new energy exhibits a pattern of concurrent development of centralized and distributed forms high-voltage direct current (HVDC) transmission enables the cross-regional power transmission of large-scale power plants. Meanwhile, the medium-voltage direct current (MVDC) distribution...

Transverse collaborative working performance during the operation of prefabricated girder bridges is critical to their safety and serviceability. An indirect measurement index, the strain correlation coefficient of adjacent prefabricated girders, is proposed to represent the transverse collaborative...