Advances in Engineering Research

The existed energy management system (EMS) grid model and fault information is relatively perfect, which realizes automatic synchronization of data in areas I and III. Urban grid fault event management system is designed and developed for this purpose. It locates at safe area III, using data of EMS to...

The optical fiber has been extensively used as a sensor in some special fields. Because the optical fiber exists crackles itself and also produce the micro-crack as well as local damage, the fatigue behavior of the optical fiber become the main problem we care about. This paper presents the experimental...

There is a problem of poor cementing quality at the overlay segment of the liner hanger in the conventional liner hanger cementing and it can be solved by the technique of expandable liner hanger which adopts the steel tube expansion and the high strength rubber materials as the hermetic hanging mechanism;...

Aiming at the problems of traditional BP neural network in fault diagnosis of equipment, the genetic algorithm is introduced to optimize the network, and the fault diagnosis model of equipment is established. The modeling ideas and considerations are introduced in detail, and the simulation calculation...

Before comparing the heat dissipation of bubble bath and common bath, we analyze the temperature distribution in the bath.After that, we establish the heat conduction differential equation. The temperature distribution in the whole bathtub with hot water injection is obtained by the finite difference...

The oxygen blast furnace (OBF) is a new ironmaking technology. The coke rate and carbon dioxide emission can be decreased greatly in the OBF process. In the OBF process, the room-temperature oxygen is blown and the preheated top gas of CO₂ stripped is recycled into the furnace. The recycled gas has various...

Compressive property of lattice material with pyramidal truss core was investigated under uniform quasi-static compression. Load–displacement response and shape deformations of trusses during compressive loading was simulated by finite element method. The numerical prediction is in good agreement with...

The six prism type Ce0.7La0.3O2- solid solution was prepared by reverse co-precipitation method with urea and Na2CO3 as double precipitant. The reverse method favored the washing of precipitate and formation of rod-like CL. Using urea as a homogeneous precipitating agent before precipitation with Na2CO3...

X-ray diffraction spectra are studied in the two series of La0.9Sr0.1Ga0.8Mg0.2O3 δ (denoted as LSGM). The comparison of the enlarged portion of XRD spectra between the experimental samples and samples in the card bas has been made to detemine their crystal structures at room temperature. The comparison...

With the rapid development of power system, the large transformer reliability and the performance is more and more important, the oil paper insulation electrical characterization of materials are important factors affect the transformer performance and operation reliability. Therefore, it is very important...

Microcellular foam injection molding process is a new technique and widely used in different industries nowadays. However, most products have surface defects that limit this process usage. This paper introduces different methods used on improving microcellular foam injection molding parts surface quality....

Nine combinations of illite (0,5,10g•L-1) and cadmium (0,2.5,5mg•L-1) were set, and the hydroponics was adopted in this experiment to explore the effect of illite on the rice growth characteristics under Cd stress, including chlorophyll content, net photosynthetic rate, plant biomass, and the antioxidant...

A type of remote magnetic field measurement system has been developed to detect magnetic fields simultaneously in three orthogonal directions. The 3-axis magnetic sensor is composed of three orthogonal magnetoresistors. A STM32 operates as the microprocessor for digital signal processing and peripheral...

With the current three mainly forms of land circulation, this paper analysis the advantages and disadvantages of the three forms. Combined with the electricity and the raise, put forward a new land circulation mode of the raise rent-seeking based on electricity. Using this model, not only can solve the...

Mesoporous HZSM-5was prepared by alkali solution treating microporous HZSM-5, then Fe/ZSM-5 catalysts have been successfully fabricated by equal volume impregnation method. Their texture structure, crystal phase structure and acidity were characterized by N2 physisorption /desorption, XRD, SEM and NH3-TPD...

The ACM International Collegiate Programming Contest (ACM/ICPC) provides college students an opportunity to interact with students from other universities and to sharpen and demonstrate their problem-solving, programming, and teamwork skills. The C++ course is an important professional backbone course...

At present, the report format of relay protection tester's traditional simulating calculation is not uniform, and can only provide a simple failure analysis of the power grid. As for the RTSD that can carry out complex analysis, theoretical requirements are too high and the price is very expensive. Aiming...

The developmental history and progress of the fluid transmission are introduced in this paper. As well as the importance of the simulation software about fluid drive is pointed out, the advantages and disadvantages of several typical fluid driving simulation software (CFD) between domestic and international...

In order to solve the actual needs of developing strategies to improve the capacity of wind power consumption, this paper analyses the factors affecting the capacity of wind power consumption in multiple temporal and spatial scales, as well as measures to improve regional wind power consumption capacity....

A new type of grouting coupler for rebar splicing was fabricated with common seamless steel pipe by cold rolling technique. Seven splice specimens were prepared with the sleeve and tested under pullout load. The test results have shown that given a proper embedded length, the specimens provided good...

The expansion of fatigue-driven delamination in composite materials is forecasted using a computational method in this research. The method alters the interface element, which is often used to estimate delamination growth from static loading, to consider cyclic loading. A reformed sort of fatigue impairment...

The trust value of the product is often through historical evaluation of calculated in online trading platform. However, some commodities have no or only a few of user evaluation, the traditional method of calculation will be very inaccurate and unfair trust value, seriously affecting the search results...

The water pollution in Shenzhen Bay caused by sewage discharge is numerically simulated using ECOMSED, a two-dimensional hydrodynamics and water quality model. The results indicate that Shenzhen River and other land-based pollution sources lead to heavily water pollutions in Shenzhen Bay. The pollutant...

The 2014 Ebola outbreak is an ongoing epidemic of the Ebola virus disease in West Africa causing many deaths and great panic. It has been declared “the largest, most complex and most severe we’ve ever seen” by the World Health Organization (WHO)[1]. This paper tries to establish a realistic, sensible,...

Through the group key agreement, all group members could negotiate a common session key which is used in later secure communication. While simple GKA cannot provide enough security to resist the adversary’s attack, and the malicious damage during the agreement makes the authenticated key agreement particularly...

Internet of Vehicles is the basis of the application of intelligent transportation system .This article has carried on the analysis and discussion about the concept of IOV, applicable architecture, system service type, and need to emphasize solving the key technology of application and development of...

In this article, Wireless Ad hoc Networks and routing classification are briefly presented and ZRP Routing Protocols are analyzed. In large wireless Ad hoc networks, ZRP routing protocol takes long time to find routing path. It puts forward the improved routing protocol IZRP. This protocol uses the Beidou...

With the development of rail transit technology, the autonomous recognition and operation environment of the train becomes the development direction and research focus of the current rail transit. Due to the complex operation environment of the train, the traditional control technology requires the ground...

In the paper, we develop a model of temperature of tub water with energy conservation law. We consider the water in the bathtub at a standstill, continuous injection to the bathtub and an equation of inflow and discharge. Energy conservation law and thermal balance equation are utilized to analysis heat...

Based on choose the constitutive relationship of core recycled concrete and steel in a reasonable way. It used the ABAQUS to establish the finite element analysis mode of recycled aggregate concrete filled steel tube subjected to axial compressive. It introduced the method and process of establish the...

The photodegradation of humic acids (HA) in aqueous solution was carried out in the presence of Fe(III) and oxalate, and the influence of inorganic ions, such as Ca2+, Mg2+, HCO3- and H2PO4- on HA removal was investigated. 88.9 % removal of HA in solution was reached after 75 min with Xe lamp irradiation...

Influences of length, injected optical power, internal loss, differential gain coefficient and back facet reflectivity on remodulation in RSOA-based WDM-PON are investigated. The remodulation effect can be improved by optimizing structural, operating and physical parameters.

For the end effect produced in the decomposition process of empirical mode decomposition (EMD), based on the analysis on the subsistent method of the wave matching, a new improved method of empirical mode decomposition is founded using a new cut off condition during the process of the decomposition....

With the continuous expansion of the scale of urban lighting, LED (light-emitting diode) lamps with a long life, high luminous efficiency, in many cities gradually popularized into the practical stage. In the traditional AC power system, the driving power of LED is the main failure point of LED lamps,...

The present study discusses the urban road network connectivity of Hyderabad City. Urban road networks are vital for the effective movement of both people and goods throughout urban areas. They improve economic activity and link different city regions, acting as the fundamental support for urban infrastructure....

MQTT (Message Queuing Telemetry Transport) is a communication protocol designed for connecting devices in scenarios like machine-to-machine interactions and the Internet of Things (IoT). It excels in resource -constrained environments, slow data connections, and situations with data transmission delays....

UAV technology has realized rapid development in recent years, especially in foldable UAVs. The foldable UAV has numerous advantages, such as portability, compact storage, and easy to carry. This paper focuses on the structural optimization design of foldable UAV, aiming to improve its performance in...

Boxcar is an important means of transport in railway transportation, but its unique structure brings a lot of trouble for goods loading and unloading. It mainly depends on manual handling, while there has been no efficient mechanized method. In this paper, a bidirectional belt conveyor for boxcar is...

HMI is passed between people and computers, a medium of exchange and dialogue interface information, indispensable in industrial automation systems. Based on the STM32 processor, it encapsulates line, characters and other display functions, to achieve the data processing and LCD graphic display, the...

This paper intends to study and build deposit and payment platform System ,According to the feature of business requirements , The system has been designed on the basis of CORBA midware , Because the system needs to interact with the legacy systems of the telecom with which having different program languages...

Based on cognitive load theory, this paper aims to study how multimedia information input, a combination of audio information, pictures and graphs, in contrast with pure audio information input, has influenced English listening decoding, and then put forward some practical training strategies, such as...

A wave-current coupled model was established to investigate the interaction of wind-induced wave and current and its potential effect on the transport of materials in Lake Taihu, China. Different wind conditions were considered, and numerical experiments on the transportation of dissolved materials and...

The microstructure evolution of ferrite in a low carbon steel during hot uniaxial compression tests at 700C and 0.01s-1 was investigated by means of OM, SEM, EBSD and TEM. In order to investigate the effect of cementite particles size on dynamic recrystallization (DRX) of ferrite, two kinds of different...

Fiber-optic sensors are widely used in the long-term health monitoring of major engineering structures, and it will generate heat fatigue damage under the influence of the environment, which greatly affect the stability of the optical fiber sensor. In this paper, experimental analysis for optical properties...

Because the modulation and demodulation method in SS (Spread Spectrum) mode is different with sub-carrier TT&C system, so it is necessary to realize its performance evaluation based on software simulation. This paper makes use of Systemview to simulate the single target measurement in SS system and evaluate...

A design of a circuit controlling stepper motors in light-shifting device of the satellite-born spectrometer was proposed. This design utilizes FPGA as the core control chip and LMD18200 as the driving chip of stepper motors. To reduce the abrasion of bearings and overcome the increase of the resistance...

Tunable diode laser absorption spectroscopy (TDLAS) technology has the characteristics of high sensitivity, selectivity and rapid response. The tunable and narrow linewidth of semiconductor lasers are used in this technique to realize the rapid and accurate online detection of target gas concentration,...

As more foreign direct investment (FDI) inflows to pollution intensive industries in China, policy makers become concerned with the environmental problems causing by FDI. Because of environmental regulation in different regions can be formulated with different strength, whether or not environmental regulations...

A lock-in amplifier (LIA) is designed and optimized to recover weak magnetic signals from noise. The proposed LIA is based on phase-sensitive detection technique (PSD), obtain needed signal at the specific reference frequency and reject noise signals at other frequencies. A measurement system applies...

In order to meet high reliability application requirements of modern electric drive system, a kind of Halbach array based permanent magnet fault-tolerant motors (PMFTM) is studied in this paper. Firstly, the structure, characteristics and fault-tolerant working principle of PMFTM are analyzed. Secondly,...

In the present paper, the multiple scales is applied to investigate the internal resonance and vibration suppression of the system of tracked emergency ambulance. The delayed feedback control is employed to suppress the amplitude of the primary system when the 1:2 internal resonance occurs. The effect...

When there is no heat source,we analyze the downward trend of surface water and inner water by calculating heat dissipation and heat absorption.here are heat exchange between surface water and air,surface water and inner water,inner water and hot water,inner water and bathtub wall.They can be calculated...

Based on the basic theory of harmonic drive, circular spline profile is computed by envelope method when flexspline profile chooses double circular-arc tooth. The load distribution among the teeth of the flexspline has been calculated under different working conditions. When the force intersection angle...

With the saltwater border map method, the saltwater border map along Modaomen channel in dry season of 2014-2015 year is drawn and the time series of the 0.5‰ saltwater border is obtained. The movement of the saltwater border is discussed. There are two phases with different amount of upstream runoff...

It is the purpose of the paper to develop a water-recycling plan for Billings.In this paper, I make two essential models and an extended model. I first develop grey model to predict the data of water use in the future 30 years at Billings. Grey model can well predict uncharted data and get an obvious...

Electrical joint compound is widely used in metal connections of high-voltage electrical equipment. Based on studying a defect of electrical equipment connection fittings, the influence of electrical joint compound on the temperature rise of electrical equipment was studied according laboratory experiment...

In Northern China, most traditional heating systems, heated by mini-stove in the kitchen, usually take agricultural residues as fuels resources. Besides, burning cave under the ground-floor of a rural house is also widely used. Exhausted flue gases from these heating systems contain many harmful components...

With the development of rocket technology, the demand of large draw ratio rocket with big carrying is improved. In this artical, for the purpose of optimization analysis of large draw ratio rocket's dynamic modal characteristics, a finite element model is established firstly. Then the structure of the...

This paper analyzes the distribution of haze under different conditions of winter in Jiangsu Province in 2014. Selected the city of Nanjing and Xuzhou as typical polluted cities, the analysis and comparison of different haze day's discrimination criteria are different. when the haze pollution is lighter,...

With the growing development of the Internet, phishing sites have caused more and more serious harm to people. Perhaps even worse, resulting in irretrievable economic losses to users. Based on the existing research, we propose a model of combining PHA and page noise to solve these problems. We use PHA...

In order to solve the problem of water-rich loess tunnel in construction process, the paper based on the idea of underground water environmental balance, use the Kuniaki Sato empirical formula and underground runoff modulus to build correlation function, get the permeability coefficient. Then we combine...

Aiming at the insufficiency of thermal comfort standards of naturally ventilated buildings, the domestic existing thermal comfort evaluation models are introduced, including revised PMV models, climate adaptive models and its revised models. The results show that building energy saving potential can...

A LMS predictive & Blind RLS code-aided technique for simultaneous suppression of multiple-access interference (MAI) and AR narrow-band interference (NBI) in direct sequence-code division multiple access (DS-CDMA) systems is proposed. This technique is based on combining predictive and code-aided approach,...

As a natural anti-buckling component, corrugated steel shear wall is adopted to increase the lateral stiffness of steel frames. Taking a 6-story office building as an example, a design method for corrugated steel shear wall was produced based on the shear strength design theory of steel members. In which,...

In many oil spill accidents, the crud oil flowed into the ocean led to serious crisis to environment as one type of pollution. It can pollute air, water and soil. A research on oil spill cleanup materials in oceans showed new material fibers can absorb several times oil as the materials' weight. If a...

As we know, the recognition of lunar terrain is the beginning of the lunar research. Therefore, an accurate and effective automatic recognition of lunar terrain is an integral part of lunar research. This paper has proposed an improved recognition algorithm for lunar terrain based on gushing and immersion....

In this paper, we present an optimized coverage algorithm based on dynamic parameter model.Through the definition of dynamic parameter coverage model, the expected value and tolerance of the coverage of the sensor nodes and the expected value formula for the first coverage of the target node are given....

Small hydro-power generation shows strong uncertainty, which greatly affects the load forecasting work in small hydropower regions. Thus it's important to improve the accuracy of small hydropower generation load forecasting. At present, the most commonly used forecasting method is artificial neural network,...

Firefly algorithm, a new type of swarm intelligence in optimization, has a good performance in combinatorial optimization problem. For Traveling Salesmen Problem (TSP), this process proposes an optimized path approach based on the modified firefly algorithm. In order to avoid a local optimum, an elitist...

Modulation mode recognition has always been a major subject for domestic and overseas research scholars engaged in the receiving processing of satellite signals. The paper analyzed the high-order cumulants, characteristic parameters, square spectrum and quadruplicate spectrum of 5 most common modulation...

To enhance the water repellent property of cotton fabric, cotton was grafted using dodecafluoroheptyl methacrylate (DFHMA) monomer via atom transfer radical polymerization (ATRP) method in aqueous media. The structure of grafted cotton fabric was characterized by scanning electron microcopy (SEM) and...

Compared with traditional Cassegrain antenna, the BWG (Beam Waveguide) feed system has many advantages. This paper designs subsize BWG, according to shipborne environment. Geometrical optics is used to determine the relative location and size of each mirror. Finally, performance for the feed system is...

This paper reports an approach to derive the explicit solutions of the dispersion equation of a liquid jet with small viscosity in high velocity coaxial air stream. The dispersion equation, which contains the relationship of the growth rate and wavenumber, is very complex when taking the viscosity into...

The main compression layer of Xi’an is over-consolidated. Based on the property, the physical model is designed as a steel cylinder which is 2.5m diameter,3m high. The soil layers are inter-bedded with silty clay and medium-fine sand. The consolidation pressure and overburden pressure is 295KPa. The...

In this paper, from the experimental teaching, to describe the process of timing signal produce in the micro-program controller, and using Altera Quartus that is integrated development platform to validation logic functions. By the simulation design, you can see the design effect visually, to get a ring-pulse...

Real-time detection of train distance from the front of the obstacle to ensure that the train in the case of safe braking speed driving is to improve the efficiency of train driving the main way. In this paper, a collision avoidance method based on deep learning is proposed. The system acquires the obstacle,...

Due to the problem of reforming the reactor, the original supporting column at the outlet of the equipment has a negative influence on the uniformity of the flue gas. In this paper, CFD simulation technology is used to simulate the smoke movement at the outlet of the denitration reactor, using the standard...

According to the problem of population saturation, resource shortage and so on with the development of the city, based on the entropy method, we establish the model to solve the relationship between development level, speed and subsystem coordination. And based on the analysis to make the sustainable...

Attempts are made to treat 45 steel cryogenically using liquid nitrogen. Various properties of un-treated and cryo-treated 45 steel are studied in a comparative manner. The morphological changes are investigated by metallurgical microscope. Hardness is evaluated by the relevant machine. The results reveal...

Due to the different fault characteristics of the micro grid under the two kinds of operation mode, which are connected to the main grid and the isolated mode, and the various topological structure and the internal tide make for the traditional relay’ malfunction. The paper proposes a fault area localization...

This paper is to establish a comprehensive system combining statistics, monitoring and evaluation of energy consumption and CO2 emission, which is to obtaining the real-time traveling geographical coordinates and energy consumption by using mobile vehicle-mounted terminal. It allows transport authorities...

In this paper, a three-dimensional finite element model is developed based on the joints on standard sections of tower crane QTZ5510. The validity of this finite element model is verified through the contrast of analytical results calculated by Yamamoto Method and simulated ones under the action of static...

In this research, in order to address interferences of air traffic from complex factors like weather and local data abnormality of radar samples, fuzzy clustering and neural network ensemble were introduced into the short-term forecasting of air traffic flow. Firstly, with K-means cluster analysis, this...

To estimate the effect of high repetition frequency laser jamming on laser seeker’s distinguishing and locking stage for decoding process, two models are built to quantitatively study the jamming effect under the different coding systems, one is normalized cross-correlation function model, the other...

To low transmission power loss, maintain voltage stability and improve voltage profile, a novel multi-agent-based voltage control scheme is proposed in this paper by dynamically adapt configuration of control devices, including the automatic voltage regulator of generator, transformer with under-load...

To gain a better understanding the difference on microbial community structure for low permeability reservoirs in Daqing Oil Field at different days in outdoor, we constructed the 16SrDNA gene clone library for different days’ samples respectively. The results showed that the dominant microbes of zero...

In order to make up for the deficiency of traditional actual experiments in the curriculum of data communication and computer network, we put forward an idea that network simulation technique should be applied to develop experiment items. The methods of developing simulation experiments by network simulator...

It has very important significance to assessing forest biomass carbon pool and its inter-annual variability accurately for the reveal the role of forests in terrestrial ecosystem carbon cycle and the rational utilization of forest resources. We are trying to explain the size of the biomass carbon pool...

“Probability Theory and Mathematical Statistics” is a public mathematical elementary course for all science and engineering specialties in colleges and universities. It is because this course applies widely in many other professional courses of the specialties of science and engineering. But this course...

This paper introduces design and structure of test system of discharge time for emergency lightings based on PIC MCU, including the structure of hardware and design of software. And the communication performance and human-machine interface (HMI) of the system are elaborated. In addition, due to functional...

Tubular composite structures are used extensively in the petroleum, chemical, and aerospace sectors for the transportation of diverse fluids. Among these applications Adhesive bonded laminated Tubular Single Lap Joints (TSLJ) are one of the utmost common type of lap joint. In present paper stress analysis...

This paper aniline wastewater reaction solution using Orthogonal Design Hydrogen Peroxide Degradation of aniline process, results showed: Impact H2O2 Decomposing aniline five factors (aniline initial concentration, pH value, H2O2 dosage, reaction time, temperature), the effect of H2O2 dosage maximum...

According the bridge 132 meters long tapered continuous curved box-girder bridge as the research object. Divide the continuous beam bridge models into vertical bending, pure torsion, lateral bending and longitudinal movement of the four sub-direction. Each energy of the vibration mode also divided into...

The seismic behavior of precast concrete structure wall mainly depends on connection of the shear walls, and constrains at edge elements. The strength of concrete in embedded column area is also especially important. This paper explores a mothod of connection for prefabrication that was post-cast at...

To solve the problem that traditional LMS predictive technique is sensitive to complex white Gaussian noise and traditional blind LMS code-aided technique can’t reject sinusoidal tone interference in code division multiple access (CDMA) system, a new blind LMS predictive code-aided technique is proposed....

In order to reduce the unbalance of grinding wheel influence on machining accuracy and the life of grinding machine, a new grinding wheel dynamic balancing control system has been designed, it contains hardware and software part of the system. The system is based on ARM (STM32F417) as the core processor,...

This paper analyse the cluster analysis method and representation cluster algorithm in the area of the Data Mining, and compare the algorithm capability. And also expatiate the application of the cluster analysis in Data Mining.

Using ring damper in the center brace could solve premature buckling and decrease residual deformation of the central brace. A design method for Composite Steel Ring Brace system was proposed based on current design codes. A nonlinear finite element model was established to study seismic behaviors of...

In order to study the trust model further, and solve how to establish the trust relationship between the entities, in this paper, we classify and summarize the trust model in the current distributed environment according to the different application fields, and analyze the existing trust model under...

The distribution of pollutants in 13 cities in Jiangsu Province in the winter of 2014 was analyzed. It was found that there were more haze days in Nanjing and Xuzhou and the concentration of PM10 and PM2.5 exceeded the national standard 38.9% and 42.2% respectively in the Nanjing , 51.1% and 55.6% respectively...