Advances in Engineering Research

Although the low-permeability tight gas reservoirs in western Sichuan are widely distributed, of varied types, complex geological characteristics and difficult development, the reserves are of large scale and there is great potential for development. With the technology research breakthroughs of geography,...

Solvents have an important effect on the epoxidation of propylene catalyzed by TS-1. Through the experiment, this paper analyzes the effects of concentration of H2O2 and the addition of methanol in small amount on the propylene conversion, PO selectivity and H2O2 utilization in order to provide some...

This paper deals with the study of the dynamic performance of service-manufacturing hybrid supply chain with different forecasting methods. Two forecasting methods in two-echelon hybrid supply chain system are exponential smoothing forecasts (ESF) and moving average forecasts (MAF). Based on Automatic...

For the optically variable films series, using the boundary conditions of electromagnetic waves, we have given the propagation wave equation of S-polarized light wave in the optical variable film system with razor-thin metal film, which can be used to calculate electromagnetic field distribution and...

Solar blind ultraviolet imaging detector is useful in detecting corona of overhead electric transmission lines, reducing power equipment damage. UV lens are the core of solar blind ultraviolet imaging detector. Their property affects the performance of the whole detector directly. In view of the problems...

DSRC plays an important role in current V2X communication market, but its performance in real environment is still not very clear which raise potential dangerous to both the passengers and the vehicle factory’s business. It’s important for the vehicle designer to know the communication performance...

In this paper, we analyze Hopf bifurcation phenomenon in a nonlinear small-world network model with time delay and fixing probability.By choosing time-delay as a bifurcation parameter, we obtain that the model exhibits of Hopf bifurcation when time delay passes through a critical value. In order to control...

Wireless power transfer (WPT) systems are widely used in powering of Things (IoT) devices. The design and switching strategies of compensation circuits in wireless power transfer systems have become crucial for optimizing energy transfer efficiency and system stability. In this paper, a compensation...

Spoofing is an important threat to present satellite navigation equipment; and the research on spoofing technology is the basis of the anti-spoofing technology. According to the principle of spoofing, this paper analyzes constraints on timing receivers and navigation receivers. The analysis results show...

Guanping aqueduct is located at main canal of reservoir's irrigation district in the Dayong county, Hunan province, this aqueduct is reinforced concrete rib arch aqueduct, main arch ring is variable cross-section reinforced concrete double rib structure, arch axis is suspension of attachment, reinforced...

Algae scum, which is inevitable in the algae water separation process, should be harvested and forbidden to discharge into the water. This paper studied the variation of algae scum in electro-coagulation-flotation (ECF) process. All experiments were conducted in the homemade electro-coagulation-flotation...

Typically, the main form of Chinese medicine is based on interrogation of the patient's condition and artificial judgement by asking related patient symptom information; which is strongly subjective and prone to errors of judgment, leading to the wrong treatment outcome. The development in computer greatly...

The influence of different carbon content and temperature on the carbothermal reduction coal fly ash and the optimum conditions of carbothermal reduction coal fly ash were investigated. The effect of temperature on the equilibrium components of coal fly ash during carbon reduction process was simulated...

A two-dimensional axisymmetric thermal model, whose heat flux is constantly changing both in magnitude and position, is created based on the temperature distribution in the process of EDM surface strengthening. Using the JMatPro software to calculate the TC4 material parameters with the temperature changing,...

In order to solve the problem of low spatial resolution caused by signal correlation for angle estimation a novel DOA measurement approach for related signal is proposed based on vehicle MIMO-OFDM signal. The proposed method uses the cross-correlation matrix to reconstruct the signal covariance matrix,...

For Identity-based proxy signature, when the original signer cannot sign for some reason he delegate his signing capabilities to a person with an identity, in order to expand the scope of the proxy signer, an entity with a series of attribute properties can perform the right of signature. A new practical...

Based on the one-dimensional unsteady compressible non-isentropic flow theory and round-piston radiation theory with infinite baffle plate, the aerodynamic effects generated by a high-speed train through a tunnel with the discontinuous-type hood were numerically investigated, which shows the discontinuous-type...

We consider a newsvendor game with two substitutable products which are sold by two retailers with loss-averse preferences under multiple mental accounts. The game theory is used to find the retailers’ optimal order quantity. Given the order quantity of one retailer, there exists a unique optimal order...

The majority of coal mines in India use open-cast mining method to extract coal. The amount of overburden produced by the mine is increased as a result of the increased working depth and higher stripping ratio. Land scarcity is the major problem of the overburden management with stability in the mine...

order to study the temperature field, stress field, strain field, thinning rate and phase distribution in the hot forming process of torsion beam, the thermal mechanical coupling numerical simulation method based on LS-DYNA is adopted in this paper. Study found: Due to the different regions of part contact...

It is extremely significant to precisely control exit temperature of heat exchanger in industrial production. However, traditional control strategy has a great deficiency to be applied to temperature control system which is nonlinear, large inertia, pure delay and variant parameters. Smith predictor...

As a new horizontal rotation loading device, elevator comprehensive back-to-back test system can simulate the energy status of in different elevator load. It makes the elevator or its components such as magnetorheological(MR) traction transmission device to meet the dynamic characteristics in practical...

Considering the difference of phase-shift direction and amplitude attenuation direction when the optical wave propagates in conductive medium, with the boundary conditions of optical wave at the interface of the media, we derive the recurrence formula reflection coefficient for the S-polarized optical...

In the research of intrusion detection, we mainly focus on how to improve the accuracy of detection. Based on the introduction of support vector machine, this paper proposes a cubic polynomial smooth support vector machine model and uses it into intrusion detection. Subsequently we analyze each part...

Condition monitoring can greatly reduce the cost of Pumping Station, To have reliable operation its condition must be monitored constantly. the paper presents a monitoring system of Pumping Station based on FPGA. The system uses EDA development software Max + plus to achieve modular design in FPGA, such...

In this paper, the symbol error rate of distributed MIMO antenna systems in a linear cell is analyzed. Firstly, a composite channel model which includes the fast fading, shadow fading and path loss is established. Then, a closed form expression of symbol error rate for point-to-point downlink MIMO communication...

The lubricating oil sludge from steel wire drawing factory contains organic compounds mainly of fatty acids, which has good binding property and combustion performance. In this paper, briquette is prepared from pulverized coal with this industrial sludge as binder. The viscosity of sludge was tested...

Polyaniline is widely used in many fields due to its many advantages such as easy access to raw materials, simple synthesis process, good chemical properties and environmental stability. In this paper, the synthesis methods of conducting polymer polyaniline are discussed firstly. Then, the conductivity,...

We develop a model to analyze the data and then create a safety rating to specify a measure of how safe My City is. The goal is to use safety rating so as to evaluate the safeness of My City. Using historical data from the police reports in My City, we capture the essential elements of urban public safety,...

Understanding the settlement process of Cr in marine bay is essential to pollution control and environmental remediation. Jiaozhou Bay is a semi-closed bay located in Shandong Province, China. This paper analyzed the seasonal variations of Cr in bottom waters, and identified the settlement process. Results...

As the south-north water transfer project starts work, construction of aqueduct in China has entered a new period of development. Static analysis of aqueduct structure is the foundation of design and construction, includes the calculation and analysis of stress and strain of aqueduct structure. The stress...

The traditional analysis simulations are generally based on the time stepping mechanism in HLA. This method will greatly affect the simulation efficiency due to in a period of time no events occurred. This paper attempts to simulate high-level missile attack and defense using discrete event simulation...

In order to reduce salt pollution and reuse reactive dyeing wastewater efficiently, the residual dye was removed by calcium hydroxide, and the residual liquid was purified to remove the excess calcium hydroxide. The liquid was reused for reactive dyeing after the pH value was adjusted and the salinity...

This paper we intend to test the pressure during the process of grain drying in the rectangular silo and explore the change regularity of dynamic and static pressure. According to the trend of the dynamic and static pressure with height, we analyzed the pressure and the structure stress in the silo that...

It explores and constructs the principles of waste product redesign which are based on the concept of upcycling. It clarifies the basic concept of upcycling, briefly describes its current development, deeply discusses its value and significance, combines with the idea of upcycling which behinds regeneration...

The Zoobenthos in Baiyangdian Lake in Hebei province of China were investigated during August to October 2014, including the community structure and diversity. Total of 23 zoobenthic species were collected at 9 sampling sites, including 17 species of mollusca, 2 species of annelida and 4 species of aquatic...

Aiming at humanoid robot’s dual-arm collision avoidance motion planning, this paper firstly establishes kinematics model for humanoid robot and mathematic model for Workspace Target Areas (WTAs). Secondly, it has deduced inverse kinematics formula based on DLS-SVD method and proposed a bi-directional...

Adapt to the global strategy of the state, the paper builds a geospatial information service platform with a global coverage, high resolution, multi-subject, and the national global strategy formulation and implementation, to provide the fusion and strategic decision-making ability of massive dynamic...

In order to improve teaching informationization level of dance and promote the popularization of dance education, research the media coding of dance teaching live system based on iOS platform, support provide technical for the live system development. Firstly, study the iOS platform system structure...

IEEE802.15.4 defines MAC and PHY specification for low-rate wireless personal area networks (LR-WPANS), which targets wireless networking among low-rate, low-power and low-cost devices for short range telecommunication. As the wireless sensor network (WSN) used in ward monitoring system need to handle...

The design is comprised of single-chip computer module, liquid crystal display module, sensor module, clock chip module and speech chip module. Magnetoresistive sensor is responsible for collection of magnetic field strength in specific direction, while clock chip is for calculation of data such as time...

At present, rarely research is done about the loading process of cable net curtain wall with spring mechanism, therefore, how to select the spring stiffness at the cable end and what role the spring play in the process of loading become the very concern for curtain wall designers. Therefore, based on...

SAR dual-channel cancellation technique can suppress the scatter-wave jamming of single jammer, so the scatter-wave jamming method of multi-jammers for SAR dual-channel cancellation system is proposed. First, the scatter-wave jamming suppression principle of dual-channel cancellation is reviewed. Then,...

The reform of oil and gas industry can improve significantly the industrial efficient, sustainable and healthy development. This paper chooses United States as a representative case, reviews the whole reform course of the oil and gas industry in US, and also establish an evaluation index system which...

Aimed at the problems existed in current opening laboratory system are analyzed, and puts forward the improvement of the platform, design with learning resources, map navigation guide, wireless service platform and other functions, to achieve a unified platform, sharing interface, the introduction of...

On the base of analysis of probability of failure under uncertainty of susceptibility measurement in the reverberation chamber, we derive the relationship between the sample number of stirrer positions and the number of the mean value of electric field of different injected power levels during the measurement,...

This paper analyzes the energy status and energy saving measures of the universities in the world based on the current situation of building energy consumption, compares the data including energy consumption per unit area, electric energy consumption per unit area, energy consumption per capita, electric...

In order to solve the current college admission work problems like workload focus, department coordination problems, and low artificial statistical efficiency, on the basis of college admissions requirements analysis, this paper proposes the use of big data to collect admission work data in each link...

The paper simulated numerically the process of wind-blown sand flow impact-induced erosion of cement-mortar block. The concept of wind erosive critical pressure was put forward. Furthermore, the calculation formula of the impact pressure of sand grains, the attenuation equation of elastic modulus and...

The integral steering linkage is the key part on vehicle, which can ensure the Ackerman steer angle when steering. in this paper, The mathematical model of the Ackerman steering linkage is established. The author introduces the optimal design program for the Ackerman steering linkage with MATLAB optimtoolbox....

With the development of smart distribution grid, metering devices for low voltage distribution network is getting better and better, which lays the foundation for the accurate calculation of theoretical line loss. Firstly, this article points out existing problem of commonly used calculation methods--equivalent...

A method of attitude measurement using general commercial photoelectric sensor is proposed for the floated inertial platform. The installation error of the photoelectric sensor is analyzed and modeled, and the weighted recursive least squares algorithm is proposed to identify the misalignment angle....

In the paper, we combined with an actual engineering about an old bridge which filling pile. Through conducting the structure performance testing and cap beam Carrying Capacity of the old bridge, and using the comprehensive assessment method grading the old bridge, these provide a scientific basis for the...

The effects of different N and P nutrient limitations on the growth inhibition of Prorocentrum minimum by Ulva pertusa Kjellm fresh tissue and dry powder were studied in this paper. The results showed that U. pertusa fresh tissue and dry powder could inhibit the growth of P. minimum, and the growth inhibition...

Unmanned aerial vehicles (UAVs) face significant challenges in dynamic obstacle avoidance despite their broad applications in agriculture, logistics, and emergency response. Existing methods, such as sampling-based RRT and graph-based Dijkstra algorithms, often struggle with dynamic environments and...

This paper proposes a method of mechanical performance prediction of cold rolled ribbed steel bars based on RBF network with whole variable space. It builds a whole variable space model and studies the performance prediction of cold rolled ribbed steel bars based on the 5-in & 1-out RBF network and the...

In this paper, we investigate symbol timing offset and carrier frequency offset estimation problem in distributed MIMO-OFDM systems. In distributed MIMO-OFDM systems, signals arrive at the receiving antennas on different timings and are characterized by distinct CFOs. This property makes synchronization...

Limited by the properties of infrared detector and camera lens, infrared images are often detail missing and indistinct in vision. The spatial resolution needs to be improved to satisfy the requirements of practical application. Based on compressive sensing (CS) theory, this thesis presents a single...

Graphene has become a hot topic in the field of materials because of its excellent properties and unique two-dimensional structure. In this paper, the preparation methods of graphene are reviewed and the advantages and disadvantages of each method are analyzed. The mechanical, optical, electrical and...

With the help of topology optimization and coupling analysis, the virtual prototyping technology was first used in designing a GFRP engine mount frame. In this design, the topology optimization technology based on a variable density method was introduced in order to reduce the structural weight while...

Traditional manual parameter debugging is subjective and requires professional experience. To make up for the deficiencies, a new kind of parameter debugging approach based on complex genetic algorithm is proposed to calibrate the parameters of Xin'anjiang model. The proposed approach combines genetic...

Dance appreciation is a creative and complex spiritual activity process of the unity of feeling and understanding, affection and understanding. Development of information technology and mobile terminals provide a new way to dance appreciation. In order to develop dance appreciation video system, this...

Real-Time Monitoring System(RTMS) is the result of the development of information technology, which has made a huge difference to the life and work. The Android based GIS terminal is designed and implemented for RTMS, integrated with Internet communication, GPS, and intelligent navigation technology....

By immobilized ferric oxyhydroxide on absorbent can improve its dispersion property in aqueous solution, then improve its application in water treatment. Ferric oxyhydroxides composites had been used as the absorbent on contaminants removing nowadays. This paper use this composites to absorb manganese...

urban power conveying at present most of the use of underground channel and tunnel laying cable transmission, in order to ensure the power transmission of real-time, stability and continuity, we developed a robot tunnel for real-time monitoring of cable tunnel. This paper introduces a hardware solution...

Based on the 45 rainfall runoff samples that are collected from Qingdao residential area after the raining of July 22, 2014 and September 28, 2014, this paper tests the contents of heavy metals Cd, Cu, Pb, Zn and Mn. And based on the test results, this paper further analyzes event mean concentration...

The zero-voltage-switching combined DC/DC three-level converter, just has six switches, and the voltage stress of all switches is ensured to be only the half of the input voltage, especially suitable for high-voltage input situations, and the converter can reduce the output filter significantly at the...

The assembled foundation of power transmission line, which is composed of concrete lath and angle steel scaffold, has been applied in practice. But due to the gap of laths, the bottom area of the foundation is not clearly defined when calculating the compressive load. Theoretical study on the ultimate...

The characteristics of diversity, dynamic, heterogeneity, massive data volume and distribution of geospatial information under internet environment are challenging the traditional geospatial information services. The appearance and development of grid computing provide a reliable environment for the...

Lateral diversion from an open channel is a common flow regime and easily produces swirl which causes large head loss. The previous research mainly focused on the split flow about the fixed shapes of channel and small slopes. The paper investigated the local head loss at the diversion gate under three...

This paper presents a uniform design methodology for computer aided experimental design for intumescent fire-resistant coating (IFRC) formulations, exemplifies the benefits of using experimental design together with statistical software to facilitate the optimization of fire retardants in a formulation...

Mine planning and design require large amounts of the data; these can be handled very well by the application of suitable hardware and mine planning software. These mine planning software offers a complete 3D-dimensional visualization of the deposit and mine, allowing for any orientation to be rotated,...

In the process of use, cold-formed thin-walled steel composite floor should undertake the upper floor vertical load, transfer wind load and seismic force to the shear wall, so that the composite floor must have good bearing capacity. However, using theoretical derivation to calculate the bearing capacity...

There are many disadvantages in the traditional teaching management mode, which can not meet the needs of the rapid development of today's information technology. Relying on the campus network as the background, the use of advanced information management platform, the development of a set of open laboratory...

In this paper, K-means clustering algorithm is applied to the classification of college students, by which studies college students’ organization form and then discovers new college students’ organization from. By means of defining students’ attributes, the whole text quantities and normalizes those...

Alkali lignin is an important biorecourse. Its low reactivity and indissolubility in water make it difficult to be utilized. In present study, we verified dissolving capacity of [Bmim]Cl and researched the effect of some influencing factors, such as time, temperature and the amount of reactants, on the...

The technique of smooth connections between quartic Bézier curves with shape parameters and cubic H- Bézier curves is investigated. Based on a study of their basis functions, endpoint properties and shape analysis, the continuous connection conditions between quartic Bézier curves with shape parameters...

The valve cooling system of converter station plays a very important role in the DC transmission project, and it is important to keep the system stable running. It is found that great scaling difference appeared among three spray towers of the valve cooling system in Tianshengqiao converter station during...

The saturated magnetization and coercive force of TP347H tube from SC units and is temperature oxidation have been measured by vibration specimen magnetometer. The oxidation has higher Ms and lower Hc compared with the base metal of TP347H. The basic difference of the oxidation and the stainless tube...

The Japanese language proficiency test is the largest Japanese examinations in the world. This paper based on the NHibernate technology of .NET platform for the score management system to conduct the persistence layer design, to provide technical support for software development. Firstly, research on...

Study the optimization of aero-engine PID (Proportional-Integral-Derivative) controller parameters. In order to improve the tuning accuracy on aero-engine PID control parameters for the optimal solution, this paper presents a genetic algorithm-based PID parameter tuning method. Because the choice of...

The multistage centrifugal pump is mainly used for urban water supply and residential water, which not only achieves excellent hydraulic performance, but also has higher requirements for noise reduction. This paper focuses on the calculation of the hydrodynamic noise of multistage centrifugal pump, including...

This paper measured the influence factors on wireless channel by setting a inside wireless environment and some test models. For the same environment, the power of received signal is reduced as the increase of the distance between transmitters and receivers. The values of path loss is between 2 and 4...

By collecting and analyzing the users' information behavior, the users' real interest can be obtained, and the recommendation of users' need can be generated. This paper explores the basic concept and the related technology of personalized recommendation. On that basis, this paper proposes a personalized...

The fracture toughness of No.45 steel before and after corrosion is studied in this paper.Two experiments have been carried out about hardness experiment and COD experiment before and after corrosion. And the influence of corrosion condition of the hardness increment and fracture toughness is analyzed...

With the speed of the development of science and technology speeds up unceasingly, the traditional technology forecasting often limited the price of large, long cycle. This paper proposes a new subject to carry out technology foresight and industrial path planning research---extenics. Extension through...

The effectiveness and deterrence of food safety punitive damage system in China have been widely questioned in academic circle. Based on the Prospect Theory, this paper gives an analysis of the causes of frequent food safety incidents with the current punitive damage system in China. Simulation analysis...

Web service composition has been an important research topic in the field of service computing. Through the web service process modeling and the formal verification of the composition, we make sure the composite services meet the designer’s anticipated targets. Pi calculus is process algebra which is...

Aiming at the existing problems of the current methods in the area of guidance instrumentation error separation, such as the multicollinearity impact, the large noise effect and the low accuracy of separation results, a brand new algorithm is proposed. Firstly, basing on the advantage of wavelet analysis...

The electromotor shell is analyzed by the finite element method. The result shows that vibrations of exterior and the top of the shell produce the shell vibration. The rib reinforcement type and the surrounded structure are designed to optimize and ameliorate the prototype structure. Then vibration and...

Tomato fruit contains a lot of pigment, polysaccharide and secondary metabolism substances. These substances can affect protein separation effect, and interfere with the process of two-dimensional gel electrophoresis. The extraction of tomato fruit protein sample, conditions of isoelectric focusing and...

The assembled foundations of transmission lines can effectively promote the standardization, modularization and mass productions of tower foundations. Meanwhile, they can ensure a higher quality, improve the efficiency and mechanization level of construction, and make innovations in the construction...

In recent years, the global energy supply tends to be tight, the environmental problem causes the widespread concern, the traditional automobile malpractice gradually appears, the government pays more and more attention to the energy saving and emission reduction, has brought the new opportunity to the...

The standard method to determine industrial effluents color is multiple dilution method which has defects of reproducibility, obscure endpoint of dilution, and subjective influence. For this, based on the theory of complementary color, an integral spectrophotometry method was proposed to determine the...

The post-construction settlement of soft soil subgrade is one of the main problems of railways and highways that troubling builders and designers. Reducing the post-construction settlement has a great significance. This article presents the treatment and precautions of design. Finally, it gives a brief...

Plate heat exchanger is a kind of compact heat exchanger, which has high heat transfer coefficient and compact structure and is easy to wash.In recent years it has been widely used, but also has the disadvantages of big flow resistance.In this paper the numerical simulation is performed by using the...

Personalized information recommendation service of library had becoming an important research task. This paper divided library users into new users and other users. It proposed the recommendation strategy based on user segmentation. On the base of these, it designed a personalized information recommendation...

The rotor non-isotropic produced nonlinear vibration of aero-engine in windmilling would cause serious danger to flight security. So the research of vibration character in windmilling should go further. In this paper, the kinematic equation of the rotor/stator/wing system is established based on Jeffcott...

With the increasing demand for contactless power supply in modern electronic devices and electric vehicles, wireless power transmission (WPT) technology has attracted significant attention as a promising solution. This paper studies the frequency fork and influencing factors in Wireless power transmission...

The mixture model based on the Euler-Euler approach along with the standard k- turbulent model was employed to predict the two-phase flow and heat transfer in the external cyclic purification hot-dip galvanizing bath. The arrangement of the return and pump pipes was assessed to determine its effect on...