Advances in Engineering Research

Researches about the separation process of valuable metals for nickel-cobalt ore bio-leaching solution had already been continuously studied, while studies about its thermodynamic properties has not been carries out. This paper conducted research about thermodynamic properties including conductivity,...

Energy efficiency is one of the most important issues in designing the future Internet. For examining an energy efficient router, in this paper, differnet routers such as rate control protocol (RCP) router, precision time protocol (PTP) router and reference router are compared in terms of the power consumption....

In China, the power sector is the largest source of emissions, account for about 50% of CO2 emission nationwide, meanwhile the power sector plays a pivotal and irreplaceable role in promoting low-carbon development. In all seven polite markets, power generation companies are the companies under control....

Hong Kong South China Morning network according to FlightStats.com of statistics said: China of flights delays most serious, according to this problem, paper proposed has a optimization flights of scheduling optimization algorithm. Taking a certain period of time and a certain airport as the research...

The research background and characteristics of compound bioflocculant (CBF) were introduced. The paper focused on research and application of CBF, including producing compound bioflocculant by Low-cost substrate and engineering application of CBF. Finally the research development of CBF in the future...

Based on the embedded multi - functional family assistant is a smart robot doll based on the Internet of Things with multiple operating modes, which is composed of many functions, such as, calendar, weather forecast, indoor temperature and humidity, memorandum, an alarm system for matter safety supervision...

Along with the rapid development of UHV AC/DC interconnected power grid and the construction of the power dispatching data network, the resources allocation capability of power grid in wide area has been enhanced greatly. Now, the power grid operation faces a series of challenges, such as the centralized...

In order to obtain the variation rule of shadow length of the pole in a certain period of time, this paper establishes a model of the change of shadow length with each parameter. First of all, according to the observation date, the solar declination is obtained. In this paper, to make the calculation...

In this paper, a new method of joint control of seam tracking and welding quality was used. Arc sensor gets the welding deviation information and ultrasonic sensor gets the welding penetration information. Using the fusion algorithm of combination of optimal weight and recursive least square algorithm...

With the rapid development of power electronic devices, high-power IGBT is increasingly popular, It is used as a switching device in SVG static var generator. Due to the large switching losses, we need to design a suitable radiator, to maintain the highest temperature of 80 C in working condition, then...

In order to improve the working performance of axial flow roller of harvester, light weight design of an axial flow roller was conducted based on sensitivity analysis. Under the CAD/CAE integrated design platforms, the statics finite analysis and sensitivity analysis of the axial flow roller were executed...

The separation performance of the teetered bed separator for coarse coal slurry has been investigated. Experimental results show that the stability of the teeter bed has huge impact on separation efficiency. A number of data describe that the recovery of the separator involves both particle density and...

With the rapid growth of colleges and universities education resources, people more frequently access to those resources on the network, but the distribution of resources is too loose and the repeat of resources is too high, people need a lot of time to get information from those resources and constantly...

Based on the virtual maintenance teaching and motion-sensing technology, studied the introduction of the feeling device Kinect, operation substitute design, Maintenance of posture position etc. under the Unity3D development environment. Practical application proved that body feeling maintenance teaching...

For experiment platform of robot teleoperation control system requires expensive robot and master equipment, a method of robot construction of 3D simulation system for robot teleoperation is presented. According to the analysis of composition of robot teleoperation control system, the master equipment...

Air intake system is frequently required to replace filter unit, resulting in high operation and maintenance cost, which can be attributed to the failure to fully take account of the domestic air quality. Based on real power plant operational data, a mathematical model was built to analyze the life cycle...

As one of the passive jamming methods, the corner reflector has wide frequency band and strong RCS stability. Through analyzing the anti-ship missiles searching process, anti-ship missiles object recognitions, mechanism of corner reflector, we analyze the use of three jamming method, confusion jamming,...

According to structural feature and operating characteristic of several kinds of new style steam seal, their application position in flow passage and axle head is introduced in this paper. Energy saving effect is generalized by synthetically analyzing several parameters, which are tested before and after...

We analyzed the horizontal distribution, vertical distribution and sedimentation process of Cd in Jiaozhou Bay based on investigation data in April, July and October 1985. Results showed that Cd contents were in order of summer > autumn > spring. For spacial scale, the seasonal variations of Cd in surface...

To study whether the hybridizing could promote the growth of F1 hybrids of vegetables under heavy metal stress, a pot experiment was carried out to investigate the effects of reciprocal hybridizing on growth of F1 hybrids of two genotypes of Brassica juncea var. megarrhiza under cadmium (Cd) stress....

Experiments on four steel-concrete composite beams under negative bending were carried out in this paper. The effects of three factors such as bending moment ratio between two ends of a beam, height-to-thickness ratio of web, lateral slenderness ratio of compressive flanges on the bending bearing capacity...

Abstract. The mechanical engineering problems today become more and more complex particularly in the area of new product development. Mechanical product design is usually performed simply taking into consideration system functions and structures, while users’ behaviours in terms of using the system are...

The unsteady flowing property is complicated in stirred tank, so Computational Fluid Dynamics (CFD) is used to simulate the three - dimensional flow in this paper. Taking the steady-state solution as the initial condition of the large eddy simulation, flows in stirred tank are analyzed at different time....

Tulou, the earthen building, is the world cultural heritage. It is famous for its various shapes and structures. However, opinions are different about its concept and classification. Tulou in Najing of Fujian Province will be divided into three types in the thesis, that is, round, square and deviant...

An algorithm based on SIFT feature detection method(Scale Invariant and Feature Transform) and using conversion step of the circular area selection feature points described are introduced into image feature detecting and matching for better real time performance and higher precision.Improved SIFT features...

To improve the orbit determination precision of the TT&C equipment, the equipment parameters need to calibrate accurately using the calibration tower during the dock calibration. Through comparing the remote control mode and analyzing the control object, this paper builds the wireless communication environment...

This paper designs smart home electricity management system based on power line carrier communication. Firstly, the paper makes the ARM Cortex-M3 as a central controller and ports the uC/OS-II operating system on the ARM, then designs Web Serve program to mornitor and control equipment remotely using...

With the rapid development of urban transportation in China, public transportation has also become an important way for people to travel. Having a good travel condition has been more and more necessary for the public .How to optimize public transport has become an important issue that we now need to...

According to the test results, the flotation process parameters of refractory zinc oxide ore will be optimized by the response surface methodology in this paper. The regression model between Zn recovery and sodium sulfide concentration, depressant(F1) concentration and sodium carbonate concentration...

The reservoir landslide stability is closely related to the fluctuation of reservoir level. The main influence factors are fluctuation rate and permeability of landslides. The landslide was chosen as the research object in the three gorges reservoir area, and studied the changing characteristics of stability...

The flight performance of four-rotor unmanned helicopter depends largely on the flight control system, the flight control system was mainly consisted of attitude algorithm and controller. During design time, firstly, in order to real-time update for the quaternion , we fused the data of gyroscope accelerometer...

In order to ensure the FGD (Flue Gas Desulfurization) system security and reliability, part of the wastewater should be discharge from the FGD system. Desulfurization wastewater with high salinity, high corrosion and other characteristics will lead to water pollution and waste of resources,and it is...

The INS/VNS integrated navigation is an important autonomous navigation method for lunar rovers. The INS/VNS models usually utilize the relative motion differences between the inertial and the vision as measurements. Traditional INS/VNS models make an approximation between definitions of the inertial...

Three types of local plants (canna, calamus, umbrella,)were chosen to construct ecological floating-beds for contamination control atshiyanbaierhe. Differences in plant growth and the capacity of sewage treatment were compared. Results showed that three plants can uptake the nitrogen, phosphorus and...

In order to meet the structural and functional requirements of simulation laboratory for power grid planning study for application data processing, a set of application data subsystems for the simulation laboratory of power grid planning study is designed according to the actual demand of grid planning...

Precision machining technology, a key technology in modern manufacturing, is widely used in the defense industry, high-tech industry, aerospace and other fields. The advanced cutting tool is an indispensable factor in achieving precision machining technology. And the study on superhard cutting tool with...

This paper determines the best strategy for people who have a hot bath by analyzing the temporal and spatial variation of the bathtub water. In order to achieve the purpose of saving water, the key research object of the model is the water flow rate from the faucet. Finally, according to the actual situation,...

Network traffic abnormal directly reflects the health status of the network and real time detection of network traffic abnormal is very important. Hereby a method of network traffic abnormal detection method based on ensemble empirical mode decomposition (EEMD) was proposed. The historical network traffic...

PSO algorithm is a kind of swarm intelligence optimization algorithm which has the advantages of simple principle, easy implementation, few parameters needed to adjust and so on. However, the search accuracy of the basic PSO algorithm still needs to be improved. In this paper, a modified PSO algorithm...

Significant development is being encouraged in “wind curtailment” problem for wind energy. To find a reasonable and economical solution to this problem, a quantitative analysis method has been conducted using cost benefit analysis model to obtain the optimal operation point and the critical operation...

This paper elaborate the application of MAPLE in the calculation of the influence line of the plane statically determinate truss, accurate calculation of the axial force of a plane statically determinate truss by symbolic computation in MAPLE, that we can get the influence value by axial force to plot...

A kind of green compound corrosion inhibitor has been made from sodium molybdate, benzotriazole, calcium gluconate, sodium polyphosphate and zinc sulfate. The inhibition capability of the corrosion inhibitor in seawater for carbon steel is carried out by weight-loss method and electrochemical method....

this paper provides the process for finding roots of nonlinear equations, and gives four root finding iterative methods, which are respectively the bisection method, Newton method, interpolation method and Aitken iteration method giving their solving algorithms and using an instance of f(x)=x3-3x+1 to...

In the design of advanced aircraft turbofan engine, applying the continuous fiber reinforced metal matrix composites(MMC), which have excellent properties of good mechanics, resistance to high temperatures and light mass, to manufacture some of the key components is the effective way to realize thrust...

As a kind of smart material, Shape memory alloy spring has multiple uses, especially as a good potential for solving vibration isolation problem. In this paper, a phenomenological model for describing pseudo-elasticity of shape memory alloy (SMA) spring has been developed. The differential hysteresis...

Taking the static pressure of the oil film, carrying capacity and stiffness of the table as the main study subjects, in order to achieve the optimum design of oil film thickness, optimization method of the objective function with the linear weighting has been proposed, and the optimum oil film thickness...

To study the effects of intercropping on nutrient absorption of plants under cadmium (Cd) stress, a pot experiment was conducted to study the effects of intercropping with four Bidens species (Bidens bipinnata, Bidens pilosa, Bidens parviflora and Bidens biternata) on the nitrogen (N), phosphorus (P)...

A particle suspension transport method was proposed based on ultrasonic composite field. Firstly,the array focusing model and accumulated force equation were established based on phased array ultrasonic cells delay, then integrated with the standing wave ultrasonic field radiation force calculation method,...

With the development of multimedia and Internet technology, content-based image retrieval (CBIR) systems have been widely used. However, how to automatically detect and target images in an image database still remains challenging. Since the HSV color space is more benefiting with human visual perception...

Oriented at the actual application demands of the remote control with the information security equipment, this paper proposed an information security equipment structure supporting remote control, the workflow and the functional structure of the equipment module are introduced. The structure is compatible...

Unsteady flow and the interface distribution in the stirred tank are studied by the large eddy simulation and multiphase flow model. The result shows that the two-phase interface starts from the paddle. Finally inverted cone interface is generated by the screw move. With mixing time passing by, the interface...

Earthquakes are among the most devastating natural disasters, causing significant loss of life and property. The development of precise seismic monitoring instruments, such as seismic collection stations, is crucial for early earthquake detection and warning systems. These stations, based on IoT technology,...

Synchrotron radiation X-ray absorptionmeasurements wereperformed to study the structure of Si-doped n-type GaN layers grown on sapphire by metalorganic chemical vapor deposition (MOCVD) and undoped GaN epitaxial layers grown on Si by molecular beam epitaxy (MBE).It was found that the anisotropic characteristic...

On the basis of deep analysis and conclusions of the research status and practical work of educational circles, this paper starts study with the guidance of such theories as information resource sharing, information appreciation, information flow model, information construction and risk management. According...

Traveling Salesman Problem (TSP) is a well-known NP-hard combinatorial optimization problem. The Particle Swarm Optimization has been proven to succeed in lots of problems, but the PSO algorithm is challenging due to a variety of factors such as easy to fall into local optimal solution and the convergence...

The channel equalization technology is one of the key technologies to improve the quality of communication. It has a vital role to improve overall system performance. In order to overcome the inter symbol interference caused by the channel characteristics of the time-varying and multipath propagation,...

Based on investigation data on petroleum hydro-carbon (PHC) in April, July and October 1985 in Jiaozhou Bay, we analyzed the content, pollution level and diffusion of PHC. Results showed that PHC contents were ranging from 0.010-0.124 mg L-1, indicating that this bay had been moderate polluted by PHC,...

The microstructures and mechanical properties of Mg-Gd-Y-Sr-Zr alloy was investigated by means of optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and tensile tests. The as-cast alloy contains a microstructure consisting of -Mg matrix, Mg5Gd phase, Mg24Y5 phase and Mg17Sr2....

Based on the experimental research and numerical calculation of the Contra-Rotating Wind Turbine (CRWT) by using the technique of the aero-engine and propeller, the effect of the tip speed ratio of the rear stage on the performance of the contra-rotating wind turbine is studied by using numerical simulation...

This paper introduces the realization of correlation power analysis attack to decrypt the encryption equipment for AES encryption system. On the basis of analysis power leakage principle power models and data correlation to build the power information collection and data processing platform. Introducing...

With rapid development of power grid, the accurate and centralized analysis are characteristic of the future dispatching trend in power grid, all information of dispatching system at all level need to be shared. The demand for optimization operation of dispatching data network is more and more urgent....

We set up a refugee migration model based on the improved Network Maximum Flow algorithm. The model depends not only on factors affecting refugee migration movements we have determined, but also the attractiveness of the way countries of the selected route and the restriction of the land and ocean environment...

A new application of high resolution continuum source flame atomic absorption spectrometry has been developed for the determination of Fe and Zn in garbanzo. The selected fuel flows of Fe and Zn were 80 L/h and 90 L/h respectively, and the appropriate burner heights of Fe and Zn were 5 mm and 6 mm respectively...

Aerodynamic characteristics of a guided rocket projectile are numerically simulated. Simulations are performed in a range of flight conditions using a commercial CFD software FLUENT, and variations of lift coefficients and drag coefficients with Mach numbers and angles of attack were demonstrated. The...

In this paper, a new type of disk spring composite rolling seismic isolator was developed. The isolator isolates horizontal earthquake with SMA to restore to normal position, and dissipate energy. The disk spring isolates vertical earthquake. Adopt Ansys to build the shear model, and contrasts the earthquake...

For the small sample data and complex nonlinear characteristic of construction project cost, a new hybrid prediction model combing genetic algorithm and small sample learning model based on least squares support vector machines is proposed. First, all the candidate features are ranked by correlation...

Information on soil organic carbon (SOC) content and stocks is not available in coastal shelter forests, East China, although a large area of forests has been established there in the past 30 years. Dawn Redwood (Metasequoia glyptostroboides) is one of the most commonly tree species for shelter plantation...

The failure shape and approach for slurry trench stability analysis of diaphragm wall are studied by means of numerical simulation and theoretical analysis. From numerical simulation, the failure shape under surcharge in soft soil is approximate a pyramid for the slurry trench. Based on limit equilibrium...

Next-generation internet shall completely change the lifestyle of people. IPv6 is very suitable for the large-scale network environment with abundant terminal data on account of the huge address space owned by IPv6, plug and play and easy configuration, and internal support on mobility. With the popularity...

Abnormal traffic cleaning system is proposed, which includes a cleaning platform, a detection platform and a management platform. The cleaning platform is mainly deployed through the bypass to guide the flow of the attacked object to the cleaning equipment. According to the protection strategy, the attack...

The swelling characteristics of a mixture of waste EPS particles and expansive soil are influenced significantly by initial water content. In order to search out the influential regularities under different initial water content, the tests of swelling ratio without pressure, swelling ratio under pressure...

This paper analyzes and evaluates the efficiency of bus lines from the aspects of line layout, hardware facilities, passenger's comfort, convenience and vehicle's speed. We use DEA evaluation method based on AHP constraint, through multi-objective decision model to decompose the complex issues into parts.

In this paper, we conduct research on the cloud acceleration method for the compressed sensing algorithm under the environment of Internet of Things. On the Internet of things perception layer, an important part of the sensor network have been put forward a lot of security mechanisms. Now about access...

Water resources issue is a big problem faced by the mankind. It is of great significance to make a correct evaluation and prediction of water resources carrying capacity in a country or region. However, lots of problems exist in the evaluation of water resources carrying capacity, such as too many evaluation...

With the country promoting the power from New Energy sources, wind power was attached with great importance gradually. However, there is an existing major problem in the field of wind power, that it is the lack of peak-shaving capacity, which leads the capacity of wind power integration to be limited....

The world is rapidly urbanizing, and urban planning is becoming more important. Smart growth is a planning theory that can realize the sustainable development of the city effectively. In this paper, we study the principles of smart growth and set up a complete index system.

This research addresses the critical issue of child health and nutrition in the Mentawai Islands Regency, particularly stunting. Given the limited understanding among parents, the local Community Health Center (Puskesmas) has taken the initiative to conduct stunting mapping in the Mentawai Islands. The...

As one of the most important components of the wetland ecosystem, microorganisms play an important role in all kinds of ecological processes. Those ecological processes of wetland microorganisms are mainly represented by elements cycling, material transformation, energy flow and ecological restoration....

To improve the prediction accuracy and reduce the computational complexity of network traffic prediction based on feed-forward neural network (FNN), the partial least squares (PLS) pruning algorithm was proposed to optimize the network topology structure. The data of network traffic has the characteristics...

Anaerobic co-digestion of dairy manure and edible mushroom cultivation waste was conducted to produce biogas using batch reactor. Influence of temperature on anaerobic digestion was studied, and recovery ability of bacterial activity after second feed was also investigated. Three temperature conditions...

To study the effects of cutting after grafted on nutrient uptake of wild vegetables, four rootstocks (Brassica pekinensis, Brassica napus, Raphanus sativus and Rorippa dubia) were used to graft Nasturtium officinale, and then cutting the seedlings of scions and planted in selenium (Se) contaminated soil....

A graph is half-arc-transitive if its auto orphism group acts transitively on its vertex set and edge set, but not arc set. Y-Q. Feng et al. gave the classification of tetravalent half-arc-transitive graph of order 6p. In this paper, we proved that hexavalent half-arc-transitive graph of order 6p has...

In order to improve the speed of gestures image processing in interactive projection, the paper uses field programmable logic devices to design image processing system on-chip, studies the realization method of image wavelet transform IP core, designs gesture image of Haar wavelet decomposition and reconstruction...

Domain terminology with high quality are the fundamental component in ontology construction and domain terminology automatic extraction is the basis of domain ontology construction. Proposed an approach of achieving domain concepts hierarchies from the Web data. Used the clue words to product queries...

The finite-element linear analysis model in the typical rotor system is established by finite element method to analyze the modality and critical speed. The result shows that modes of vibration change greatly with different modalities in the rotor system. Torsion angle of the rotor increases gradually...

In the optical fiber sensor signals, most of them are weak. Generally, they are converted to weak current or voltage through the sensor unit. But the signal is too weak to measure because of the sensing unit background noise, circuit noise and external interference noise which is stronger than the useful...

Though there is an extensive research work available on mechanical behavior of composite materials. The tribological study of biodegradable composites is still need comprehensive study. In this regard, the current paper emphasized analysis of two body abrasive/sliding wear phenomenon of chitosan epoxy...

The context sensitivity is an important property in program analysis which can improve the analysis accuracy of the function call context of the source codes and helps to improve the abilities of the compiler optimization and verification procedures. The automata model based on the function call of the...

The condenser modification of a 150MW unit for high backpressure cooling water heat supply is introduced in this paper. Economy characteristics of the transformed condenser are calculated using the high and low backpressure operation data. The condenser terminal difference is 2.354ºC under high backpressure...

The higher order crack tip fields for anti-plane crack in functionally graded piezoelectric materials(FGPMs) under mechanical and electrical loadings are investigated. Although the elastic stiffness, piezoelectric parameter, and dielectric permittivity of FGPMs are assumed to be exponential functions...

Since the size of the early antenna is big and not easy to carry, the one-eighth mold SIW Omni-directional antenna is described. The overall performance has been improved. Compared with a quarter mode antenna which is already existed, the relative area has reduced by 50%.

Noise control of signals is a key challenge problem in signal enhancement, signal recognition, communication, radar, and sonar applications. The most widely used method is adaptive linear filtering method, which can adaptive change filter parameters with the stochastic property of the stationary Gaussian...

The precise 3D(Three Dimensional) modeling of the non-circular sector gear of the rocker shaft is an important basic work for the study of the mechanical properties of the automobile steering. The traditional 3D modeling method is difficult to obtain accurate model of the rocker shaft because of its...

Writing assessment is an important part of writing teaching, which directly affects students' writing motivation and writing attitude. The traditional evaluation method of College English writing is single, and the effectiveness of the evaluation is not enough to improve the students' writing ability....

In this work, the whole cell biocatalyst of Rhizopus oryzae lipase (ROL), a versatile lipase for biodiesel production, was successfully developed through surface display technique using a-agglutinin 2 (Aga2) as an anchor protein and Saccharimyces cevevisiea as anchor yeast cell. The enzyme properties...

The rise of generative AI has significantly impacted content creation, facilitating the rapid generation of high-quality text, images, audio, and synthetic data. This study investigates the generation of synthetic facial data for children, enabling complex facial transformations such as expression changes,...

Two different phases of Ga3Zr with tetragonal (D022) and cubic (Ll2) structures under high pressure are investigated by using density functional theory (DFT) calculations. The elastic constants (Cij) and mechanical moduli, including bulk modulus (B) and shear modulus (G), are calculated under various...

In this paper, two models, including the information value quantification model and the epidemic model, are built to explore how social information spreads and works, especially through the networks. The information value is quantitatively determined by means of Analytic Hierarchy Process (AHP), based...

In order to better understand the melt convection in an electro-fused magnesia furnace (EFMF), a 3D finite element method based model of the furnace is presented. The effect of the electromagnetic stirring and buoyancy driving forces on the melt flow are investigated in three typical cases with different...

It poses high requirements for the calculation speed and the precision of the solving method when we consider the large-scale transmission expansion planning (TEP) problems. Therefore, combined with the respective characteristics of EDA (Distribution of Estimation Algorithm) and DE (Differential Evolution...