Advances in Engineering Research

Spark is a memory-based distributed data processing framework. Lots of data is transmitted through the network in the shuffle process, which is the main bottleneck of the Spark. Because the partitions are unbalanced in different nodes , the Reduce task input are unbalanced. In order to solve this problem,...

In order to evaluate the error of the Runge-Kutta (RK) algorithm used in real-time simulation and apply it to real-time simulation problems with dense output, based on the ODE45 with maximum stability region and least truncation error, this paper adopts a variable step-size strategies and derives a relative...

In this paper, we propose an BGP routing instability detection algorithm that is based on statistics and pattern recognition through deeply learning BGP-4 and seriously analyzing the cause, properties, Manifestations of BGP routing instability, and verify its correctness and effectiveness by using SSFNet...

Concrete arch dam as an important hydraulic structures, in recent years has been widely used in water conservancy projects. Gucheng Reservoir is located in the ancient city of Yanqing County in Beijing, where is 10 km from the dam to the county, control drainage area above the dam 119 km2 ,which is an...

Closed-loop control or open-loop control of proportional valve can be completed when the drive current of electro-hydraulic proportional valve is provided by electro-hydraulic proportional amplifier. The control performance of proportional valve can be directly decided by the electro-hydraulic proportional...

Experimental study on the flexural bearing capacity of basalt fiber board and wood composite beam. Focuses on the composite plate of efficient splicing method and the paste of the basalt fiber in the beams bearing capacity, deformation and strain improvement. In addition to the structural measures have...

With the rapid growth of vehicles scale in China, the development of public transportation has become an effective way of controlling urban traffic problems. However, the continuous occurrence of public traffic accidents has caused widespread concern in China. Hence, how to efficiently monitor the security...

Cloud computing, as a newly emerged service oriented paradigm, is emerging as a leading solution for on-demand services. One of the challenges faced by current cloud is to decide how to migrate virtual machine to another physical machine. This paper presents an energy efficient virtual machine migration...

The foam concrete material is used as the self-thermal insulation material for exterior wall , combined with a residential building in Wuhan as an example, resorting to DeST-h simulation software, with non-thermal insulation wall as the reference model. Through the comparison of several groups of self-thermal...

The extended target is characterized by common centroid kinematic state and extended information, extended forms not only can be treated as a state to be estimated separately, including the size, shape and direction information will effectively enhance the performance of filter with proper use. For this...

This paper uses the ARIMA and BP neural network model to forecast the exchange rate by collecting the monthly exchange rate data of RMB exchange rate from 2001 to 2017, and put forward the combined forecasting method of ARIMA and BP neural network model. From the prediction results, the results of the...

In this paper, a measurement system with the near infrared spectrum technique is introduced. The experimental pipeline is designed for the stainless steel pipe which can reduce the interference of external light and have the four groups of measuring device. While the data are collected by high frequency...

As Jining City integrated gymnasium suspend-dome structure an example, the prestress tension process was carried out finite element simulation analysis by using inverse analysis of construction. The vertical displacement of the control joints and the top rod maximum stress ratio of roof were comparably...

A novel special purpose equipment for inner hole plating of rectangular crystallizer copper tube in continuous casting machine was put forward. The design requirements and the main structure of the special purpose equipment were introduced. The principle and structures of the automatically centered mechanism...

This paper presents a micro-grid digital simulation and platform based RTDS. The common distributed generators and energy storage elements are modeled and can be constructed to form the micro-grid. Considering the micro-grid control, the platform builds the PQ control in parallel operation, V/F control...

Moriseiki DMG 50U 5 Axis CNC machine that has a table-table configuration with 3L-2R machine type. Different configurations result in different machine movements, hence the need for a post-processor. The post-processor is an interface that connects the CAM software system and the numerical control machine....

In order to make full use of the solid wastes, an energy internet is designed for Laogang base, the biggest place to recycle wastes in Shanghai. This energy internet combine heat and methane with electricity on the basis of current multi-energy system in Laogang to increase energy utilization rate and...

In an applied electric field, the relationship between the ferroelectric’s intensity of polarization and the electric field intensity is not linear but a hysteretic loop which is called the ferroelectric hysteresis loop. When the temperature of the ferroelectric is heated to the transition temperature...

In recent 50 years, because of the interference of natural factors and human activities, the quality, productivity and the carrying capacity were decreased of Dumeng Country grassland in Heilongjiang Province. According to the division of county, Dumeng County township is determined disturbed grassland...

Biodiesel, a biodegradable, sustainable and clean energy has attracted growing interest in recent years, mainly due to development in bio-diesel fuel and ecological pressures including climatic changes. In this study, lipase strains FS14 extracted from soil which is polluted by oil and fat were analyzed...

HrpZpsta gene is a broad spectrum disease resistance gene to plant disease. We transferred it into soybean with the promoter of 35S mediated by Agrobacterium and got T5 and T6 transgenic soybean-lines. To study the relationship between hrpZPsta gene expression in transgenic soybean and the resistance...

A three-dimensional elastic-plastic FE(finite element) model of power spinning of thin-walled Ti2AlNb alloy shell was established based on the dynamic, explicit module of FE software. The key technologies, including contact boundary, mesh, were dealt with reasonably. The reliability of model was validated...

This paper introduces the film material in micro manufacturing in general, it is covered in a wafer. Then, it focuses on the production process of the thin film, mainly has the PVD method, which is formed by the physical method; the other is VCD, that is the chemical method to produce the film. Finally,...

Cognitive radio (CR) technology provides a new approach to solve the problem of wireless spectrum resource scarcity by allowing secondary users (SUs) to access the licensed spectrum in case that SUs do not interfere primary user (PU). One of the most challenging tasks in CR is spectrum sensing. This...

This work proposed a blind source separation method by RBF neural network optimized by GA, which can improve the separation performance under low SNR condition. The center value and the width value of RBF can be determined by k-mean clustering algorithm and the cost function is set by maximum entropy....

Additional displacement fields based on internal parameters were used widely in finite element method to increase the order and complementary of displacement polynomials, thus accuracy and insensitivity to mesh distortion of elements can be improved significantly. To ensure that the element could pass...

Concrete arch dam is the main structure of water conservancy projects which have the advantages of a artistic shape of structure and good mechanical properties, and it has been widely used in water conservancy projects. Banjiang Reservoir is located in Zijiang River two tributaries of Dongkou County,...

The time synchronization in the virtual radio system is determined as one of thorny technical problems. Especially in TT&C (Telemetry Tracking and Command) system, it requires incredible precision with time. A novel method for time synchronization by high-precision in a unified virtual radio model specially...

A three-dimensional stochastic simulation was developed to simulate growing process of particles deposit on a single fiber in Kuwarbara cell due to the collection mechanisms from inertial impaction and interception. The distributions of size of particle dendrites were calculated to quantificationally...

In this paper, urban traffic accessibility is regarded as the external manifestation of the dynamic process of the coupling of several traffic systems. Firstly, the relationship between a subway system, a bus rapid transit system, and a common bus system are analyzed, as well as the relationship between...

Classification of synthetic radar images (SAR) is an emerging area especially with the advent of state of the art satellite image techniques. An SVM based texture analysis and classification utilizing the PCA for dimensionality reduction of SAR images has been presented in this paper to categorize the...

The traditional vertical axis wind turbine will produce a part of mechanical loss because of the transmission system between the wind wheel and generator, resulting the reduction of the wind energy utilization rate of the wind turbine. This paper proposes a new design method for off-grid small vertical...

In order to analyze the influence of land use on soil saturated hydraulic conductivity (Kfs), three typical sandy lands of Horqin Sand Land were chosen, including pine woodland, poplar woodland and farmland, and three fields for each type to identified for Kfs measurement. The Kfs of five soil depths...

In respect to the difficulties in power supply for online monitoring equipments at high voltage side, a new design of adjustable and rechargeable induction power supply is presented. A microprocessor is used as the central control unit, which can achieve the intelligent management and control of different...

Online product reviews is an important information source which affects consumer purchasing decision-making deeply, but the inconsistency between reviews and scores brings troubles in the process of decision-making for consumers. So the importance of solving reviews’ authenticity is focused on. This...

In this paper, the physical mechanism of the cryogenic superfluid gyroscope based on AC Josephson effect are analyzed , meanwhile, the implementation of the cryogenic superfluid gyroscope was brought up and the advantage of the sensitivity of the gyroscope is proved by theoretical derivation. A method...

The concept of installing energy dissipation devices in a coupling beam of shear wall structures has been proposed and investigated. The energy dissipation device is used to dissipate seismic energy and is easy to be replaced in the post-earthquake event. According to the practical design methods of...

The contraction-expansion flow is a benchmark problem for exploring the rheological behavior of polymer melts by numerical method. In this study, DCPP and S-MDCPP models were adopted to describe the rheological behavior of branched polymer. The discrete elastic-viscous stress split (DEVSS) , streamline-upwind...

The large span dry-coal-shed has complicated structure,which has the large-span of 114m and the vertical section of 20m. In this paper, the whole project has been expounded in different ways, such as stress analysis,structure selection, structure design. Two different structure design softwares(MST and...

Wireless power transmission (WPT) technology has made significant progress in multidimensional charging, magnetic field optimisation and system safety in recent years. This review summarises the key technological breakthroughs made in the last decade in omnidirectional wireless charging, magnetic field...

The real-time is an importance on judging the performance of the image processing system . The instantaneity means the system must have the reaction in the definitive time . In this research , the time in disposing an image must be limited in millisecond from receive the image to operate and report the...

FRP is new type of composite material which substitute for reinforcing steel bar in concrete structure and can solve wear problem caused by steel bar rusting.The result of its bond behavior with concrete is one of the key technologies for its popularization and application to reinforced concrete structure.We...

Using plasma technology for pre-processing of kaolin by sedimentation settling tests to verify the performance of kaolin change.Then silane coupling agent and ethanol pretreatment plasma technology kaolin modified by sedimentation experiments to study its effect modification. The results showed that:...

Nowadays target tracking has become a hot issue of indoor positioning in the military or civilian areas. Due to the nonlinear characteristics of the indoor environment, there exist some difficulties in indoor tracking scheme. In this paper, we proposed an indoor tracking algorithm based on particle filter....

With the advent of the Internet era, the network has been widely used in production and life, and network security has become a hot topic. Nowadays, the traditional prevention technology is difficult to prevent the various increasing network attacks. There is an urgent need for a complex network intrusion...

The numerical simulation study for water conveyance of inverted siphon on water security is of great significance. The inverted siphon is thin-walled concrete structure, and cracks will appear according to temperature loads. Generally speaking, the temperature difference between the internal and external...

The ARIMA model is an important method and is widely used in time series modelling. The model relies heavily on autocorrelation patterns in the data, and doesn't consider other factors. However, in most cases, the extreme value of series has an influence on the subsequent behaviour of series. But this...

Mobile communications, which could support multi-band, multi-standard and multi-mode wireless communication technology, is one of the most important applications of wireless technology. It’s the core technology for the future development of Chinese wireless communications applications. This paper focuses...

Elbow movement disorder is one of the common diseases affecting the daily activities of patients. Augmented Reality (AR) technology fuses the virtual information generated by computer with the real environment, keeping the patients' real-world feeling and also helping to training evaluation. This paper...

Supercritical fluids have been recognized as a working media to improve thermal efficiencies in power cycles and for energy conversion, and have been used or selected as the working fluids in engineering fields, and so on. To better understand the interesting characteristic or abnormal behavior’s of...

We first examine the techniques, development, and application future of the current recommender systems in the film industry. Various recommendation techniques in current applications and the K-nearest neighbor (aka. KNN) algorithm, in particular, is then introduced in detail. This is followed by an...

In this paper, a micro-power wireless and low voltage power line carrier double channel meter reading scheme is proposed. The two communication channels of this scheme coordinate and supply each other, which takes the full advantages of each channel. The high real communication success rate and the accuracy...

The experiment aimed to evaluate the effect of 1-MCP treatment on postharvest ‘Hanfu’ apple. The fruits were treated with 0, 0.3, 0.6 and 0.9 L•L-1 1-MCP before put in cold storage condition (2±0.2 ) with modified atmosphere package for 240d. The storage quality and physicochemical change were measured...

In order to elevate efficiency of traditional Fuzzing technique, a novel method using genetic algorithm is proposed based on path coverage and test cost. There are evidences that GA has been already successful in generating test cases. Considering path coverage as the test adequacy criterion, we have...

Network security situation prediction can help network administrators to make security decisions, and the current network security technology cannot predict the future network security situation. Hereby, a network security situation prediction based on incremental wavelet neural network (IWNN) was proposed,...

Volatile organic compounds (VOCs) can have an important influence on plant-insect interactions. In particular, insect behaviors are often influenced by the volatiles of both host plants and non-host plants. The objective of this study was to assess the behavioral responses of the aphid, Myzus persicae...

This paper describes the magnesium pollution status and remediation of tilth top soils in Haicheng magnesium mine. The soil quality status was evaluated based on the analysis results. Physiologically acid fertilizers and organic fertilizer were used for the remediation of contaminated soil using magnesium-ammonium-phosphate...

In the Multi-user Generalized Spatial Modulation (MU-GSM) System, as channel gain matrix isn’t in full rank, conventional linear precoding algorithms can’t be directly applied in this system. Given this, a method called Multi-user Generalized Spatial Modulation Partial Linear Precoding (MU-GSM-PLP) is...

In the frozen area, the freeze-thaw cycle may lead to the separation of the concrete spray and the slope in the spray anchor structure, resulting in failure of the spray anchor structure.In this paper, the gravity of the spray layer itself is decomposed by the force equivalence principle and the Saint-Venant...

Three kinds pit array on the surface of cylinder liner were prepared by using laser device, the diameter were 250 m, 350 m and 400 m respectively. Then, the textured surface was nitriding treated by using nitriding salt bath device. The friction coefficient of the piston ring and the three kinds of surface...

The hercynite synthesized at 1600 in protection atmosphere was thermogravimetrically analyzed. The results show that the change of oxygen partial pressure during sintering transforms some Fe2+ in the hercynite crystal structure into Fe3+ but the hercynite structure remained. Based on the modal for hercynite...

In order to meet the needs of the development of automotive lightweight,a lot of advanced high strength steels are developed.The first generation of advanced high strength steel is very low in the strength-elongation product, lightweight and security.The cost of the second generation steel is high and...

According to the practical condition of 3401 fully mechanized caving face in Dayang coal mine, the relationship between strata behaviors, mining technology and stope gas emission are analyzed through real-time monitoring of the support working resistance, advance abutment pressure and gas concentration...

Many problems in radar signal processing involve radio frequency (RF) signals of very high bandwidth. This presents a serious challenge to systems that might attempt to sample these signals by the Shannon/Nyquist sampling theorem. However, the information level of the signal is often far lower than the...

This paper discusses the nonlinear dynamics of Shen-Larter calcium oscillation model with the center manifold theorem and bifurcation theory. A numerical approach is provided to discuss the variation in classification and stability of equilibria with parameter value. It is shown that the critical values...

By integrating diagenesis and sequence stratigraphy, the effect of sedimentary-diagenetic reformation on reservoir quality and distribution was investigated with in a sequence stratigraphic framework. Based on the petrological characteristics, sedimentary microfacies and logs analysis, 2 third-order...

Inductively coupled plasma optical emission spectrometric approach(ICP-OES) is used to determine the mercury content in pyrotechnics used for fireworks and firecrackers. Element of mercury is commonly found as impurity in chemical materials used for pyrotechnics in fireworks and firecrackers. Statistical...

The stretching process is a complex plastic deformation process, the deformation zone is relatively large, metal flow, in the process of drawing prone to flange wrinkling and force transferring area of tensile deformation to scrap parts. Therefore, it is necessary to analyze the wrinkle, the root cause...

In order to solve the digital home media sharing problems between devices and do some research on UPnP and UPnP AV protocol architecture and then design and implement media sharing system based on embedded intelligent terminal. For smart phones, portable tablet characteristics to achieve a single control...

The nonlinear systems with time delay network control is discussed in this paper, transmission delays and packet dropouts for networked control system with random time delay is analyzed. In this paper, online delay estimation method to obtain the delay value, the delay value is an input parameter of...

Using recoverable anchor cable is a good way to resolve problems about underground space occupation and waste of money . So the recoverable anchor cable applied in engineering has long and meaningful significance .this treatise uses the resistance to plucking of anchor cable in the certain unit dismantling...

To investigate the influence of different plant covering on dissolved organic matter (DOM) in forest soils, the DOM characteristics of soil sample in P. massoniana plantation forest and mixed conifer-broadleaf forest of P. massoniana and C. carlesii were researched by using chemical and spectroscopic...

The loads on the arch dam and the materials physical properties of the dam and the bedrock are uncertain, and can be described with random variable. Due to the huge volume, the complex structure of the dam and excessive random variable, the static analysis of the dam is difficult. The dam is a higher...

Aiming at the unbalanced weight problem of 25m rail in the railway transportation, this paper firstly uses the principle of moment balance and bending deformation principle to make theoretical analysis, and then establishes the finite element model of 25m rail for simulation, and get the weight that...

A general differential equation of matrix with variable coefficient is derived for analysis of stability of the various bars with continuously varying cross section and different constraints at ends, which beneficial for engineering design.

Road scene understanding plays a key role in autonomous driving for intelligent vehicle. For the problem making semantic labeling with equivalent priority results in confliction between huge amounts of data and limited computation resource, this paper proposes a novel framework that efficiently fuses...

In the paper, an improved plan is proposed based on AES encryption algorithm. Complex mix-column operation in the AES implementation process is simplified by the improved plan, and an anti-power attack technology is further proposed on the basis of implementing the improved plan. The technology is based...

The image has many features, among which the edge is one of the most basic one. The purpose of edge detection is to obtain accurate edge positioning, which plays a vital role in computer vision and image analysis. Great detection of the image can also effectively suppress the generation of noise. There...

Cold water paddy field is one of the main factors to agricultural production and crop high yield. This paper proposes a suitability evaluation index framework of cold water paddy field for rice planting with site conditions, soil physical and chemical properties, soil nutrient status, social and economic...

Traditional internet data center is shifted to cloud computing data center with rapid development of mobile Internet and cloud computing currently. Cloud computing network burden is aggravated as a result. More optimal cloud computing network architecture is required for replacing traditional cloud computing...

To overcome the low efficiency of Least Squares Twin Support Vector Machine (LSTSVM) in classifying, a new method called Sample Reduction LSTSVM (SR-LSTSVM) is proposed. The method greatly reduces the training samples and so improves the speed of LSTSVM, while the ability of LSTSVM to classify is unaffected....

With the rapid and bursting development of pattern recognition technique and power system theory, the combination of the two is urgently needed. We argue that a filter bank that is designed from perceptual evidence is not always guaranteed to be the best filter bank in a statistical modeling framework...

Considering the fact that copper (II) (Cu2+) act as a dietary need but toxic metal ions, its detection and quantification is very much important for human healthy diet and environmental risk assessment. Herein, we introduced a sensitive fluorescence sensor for the detection of Cu2+ based on ZnCdSe/ZnS...

The fault diagnosis of complex electric power systems in marine is very complex and hard, in order to prohibit or further reduce the misoperation after the faults occurring of complex electric power system, the model based on weighted degree of grey incidence of optimized entropy and fault diagnosis...

The Ship's Routing has been widely used in many coastal waters of China. It plays an important role in regulating the traffic flow of ships, guaranteeing the safety of ships and improving the traffic efficiency. According to the standard of international Ship's Routing, combined with the examples of...

Poly (ether ether ketone) was pretreated by wet chemistry and different surface morphology was obtained. In swelling treatment, with the increase of sulfuric acid concentration, the holes on surface changed from isolated structure to interpenetrated structure, the number and density of the holes increased,...

Semi-supervised Clustering with constraints is an active area of machine learning and data mining research.. Shental used the Expectation Maximization (EM) procedure to handle semi-supervised Gaussian Mixture Models (GMM) estimation, in which positive and negative constraints are incorporated with to...

As different friction coefficients, extrusion speeds and extrusion temperatures have an effect on equal channel angular extrusion process of Ti5553 alloy under non-isothermal condition, 3D model had been set up to simulate the high temperature deformation behavior and particle tracking method was given...

Coronary heart disease is a serious harm to human health and common disease in many cases, in Hainan, is also one of the common multiple fatal diseases. This paper analyzes the association rules of clinical diagnosis and treatment of coronary heart disease in patients with coronary heart disease, analyzes...

The influence of feedstock and pyrolysis temperature on biochar properties has been extensively studied. This study used scanning electron microscopy (SEM) and electron dispersive X-ray analysis (EDX) to observe surface morphology properties of the biochars produced from broiler litter (BL), saw dust...

In the automotive remanufacturing movement, the inspection of the corrosion defects on the engine cylinder cavity is a key and difficult problem. In this paper, the ultrasonic phased array is applied to detect the corrosions in this part, and a method for marking and positioning the corrosions from the...

Many concrete shear walls are always subjected to high gravitational loads and prone to brittle shear failure under the lateral seismic loading which probably leads to the collapse of the whole shear walls system. This paper aims to present a new method of using slit steel plates to retrofit reinforced...

The numerical simulation study for water conveyance of penstock laid on downstream surface of overfall dam on water security is of great significance. Static analysis of penstock laid on downstream surface of overfall dam is the foundation of design and construction, includes the calculation and analysis...

By using the usual mean-field approximation, the phase transition properties of a ferroelectric nanoparticle described by the transverse field Ising model have been studied. The exchange interactions and transverse fields at the surface are assumed to be different from those of the interactions parameters...

Case study shows that there is a defect in"2-4" model which will limits its application. The defect is the module of unsafe act is not classified. The classification method of unsafe act is proposed by means of feature and characteristics of unsafe act via analysis result of 201 cases of china coal mine...

The metal particles flow law of the turbine forging process is very hard got to know, due to the complex shape and large deformation of this process. For this situation, a 3D finite element mold was build for this forging process with DEFORM-3D. The results shows that the metal particle flow law in three...

Under the background of big data, information technology is not only the object of audit work, but also the important tool of it. According to the principle and influence of on-line audit and characteristics of audit early warning technology, firstly, we introduce the necessity of on-line audit in big...

With more and more environmental problems, renewable energy begins to play an increasingly large proportion. High-voltage direct current technology based on voltage source converter (VSC-HVDC) enables smooth access to renewable energy. Traditional DC grids system is generally radial connections, but...

Due to the influence of global warming and environmental change, the meteorological and hydrological elements of the Dagu River Basin have also undergone a series of response changes, which have led to the change of the spatial and temporal changes of water resources. The natural ecological environment...

Livestock farming plays a vital role in ensuring food security and sustainable agriculture. However, feed availability remains a significant challenge, particularly in regions where conventional feed sources are scarce. In this context, banana stems have emerged as a potential alternative feed resource...