Advances in Engineering Research

The aim of this study was to explore the biomechanical effects of different frequencies whole-body vibration training on gastrocnemius in rats. The conclusion showed that (a) there was significant difference between high frequency group and control group, and there was extremely significant difference...

In the free-floating mode, dynamic coupling exists between the manipulators and the spacecraft base of space robot, and the base attitude and position are easily disturbed by the motions of the manipulators. In this paper, firstly, the angular momentum conservation equation is analyzed. Then, the objective...

Research on maintainability growth is an important research direction for the improvement in the equipment maintainability. A rational maintainability growth model can be utilized to predict the direction and level of maintainability growth. Moreover, it can provide theoretical and decision support for...

It studies the optimization model of medicine-chest design. Given four different conditions of the medicine-chest design, it sets up a corresponding nonlinear, double objective optimization model to realize medicine-chest design.

Speech emotion recognition is mainly based on the differences of characteristics between different emotions. The traditional recognition method is based on the manual extracted features, such as MFCC and LPCC, etc., and also achieved well. But it is unclear what kind of feature are able to reflect the...

This paper introduces the historical research on fair faced concrete, benefit evaluation system of the construction technique of fair faced concrete is studied, and the Chengdu City 2nd ring road viaduct project as an example, analyzes and expounds the construction technology of concrete benefit evaluation...

In this paper, the radiation heat supply and displacement ventilation system for the wall of capillary tube are established. The indoor thermal environment is simulated by the Airpak software, and temperature contours,velocity vector images, PMV nephogram are made respectively. By analysis and comparison,...

Spare parts are one of the important supporting resources of equipment. According to the different distribution of maintenance time in spare parts support model, the model of spare parts support models with exponential distribution and constant distribution are established. According to the maintenance...

The degradation kinetics of co-metabolic biodegradation of two linear alkylbenzene sulfonate (LAS) strains was researched. Two bacterial strains which could degrade linear alkylbenzene sulfonate by co-metabolism mechanism, named as L-2 and L-15 were determined to Klebsiella sp.and Enterobacter sp.The...

This paper introduces the application of fault diagnosis technology at home and abroad, and puts forward the way of applying the fault diagnosis technology of special vehicle electrical system. This method is conducive to improving the capabilities of vehicle electrical system fault diagnosis, and reduces...

in this paper, the magnetic field and arc of a contact structure of 126kV vacuum interrupter are studied and tested. The magnetic field values of the contact structure is measured and compared with the results of simulation. The results of simulation are verified by comparing the results of the two calculations....

The analog signal power amplifier module is an important component of relay protection tester. As is known, most of the analog signal power amplifier modules employ single output loops to achieve the output accuracy regardless of the output current, which may lead to large capacity, low efficiency and...

The electrical characteristics of insulating materials play a key role on the working performance and operation reliability of power equipment. With the rapid development of superconducting technology in recent years, the working temperature of high temperature superconducting power equipment can be...

Aiming at the machining difficulty of a large thin sheet part, high speed milling and a vacuum fixture are used to reduce its machining deformation and errors. The vacuum fixture suitable for the machining of the large thin sheet part is designed and fabricated. It is able to clamp the large thin sheet...

Slope-gully system is the basic unit not only to study erosion and sediment yield but also to configure the measures in watershed. Based on the rainfall simulation experiment, the temporal - spatial distribution characteristics of sediment yield were studied in slope gully system. The result showed that...

With the help of ABAQUS and its subroutine DLOAD calculated the asphalt pavement response of different pothole area and combination of pavement structural from moving load. So as to arrive the law of development to pothole and the best combination of pavement structure to resist the pothole .Results...

The thecate dinoflagellate bloom microalga, Scrippsiella trochoidea, was co-cultured with different grams of fresh macroalga Gracilaria lemaneiformis under laboratory conditions, to characterize the allelopathic inhibition effect of the seaweed on photophysiological activities of the microalga. Cell...

In the page, we discuss relevance feedback techniques in image retrieval system, and then focus on the SVM-based relevance feedback. Using SVM-based relevance feedback, the precision rate of image retrieval system is satisfied. In order to better understand the effectiveness of SVM-based relevance feedback...

By analyzing the principle of the UWB Ranging System, a mathematical model of the system is built, and then UWB signal models are chosen. By theoretical analysis, an important conclusion is drawn that signal processing of UWB ranging system is essentially time-domain sampling of echo signals. In the...

In this paper, we build the model to determine the best strategy that the person in the bathtub can keep the temperature.

Taking the 914 working face of Dongpo Coal Mine as the object of study, through theoretical study and numerical simulation calculation to research large-span trough deformation features of Mining Face under the mining influence and tunnel deformation features under different vertical loads , providing...

Lightning is a major threat to people’s daily activities. Therefore, to forecast its occurrence is very important to ensure the safety of life and property. Compared to a series of signals from instruments like the Doppler radar, the lightning locator and the meteorological satellite, the electromagnetic...

ZN-35 silicone rubber is a kind of effective vibration damping material in aerospace, which can be made into a vibration damping pad for preventing vibration and damage to important components in the rocket. In this paper, the energy storage modulus and loss factor of ZN-35 silicone rubber materials...

Firstly, guidance law is proposed in order to enhance the performance of the guided-bomb. Secondly, the gravity PN guidance law, bias proportional navigation guidance law with terminal impact angle constraint and sliding mode variable structure guidance law with terminal impact angular constraint are...

Analyze the signal synthesis process on Matlab theory platform, based on the theory STC15W1K24S chip and 4 road 8 digit serial d/a TLC5620 produced by TI Company are designed to be a signal synthesis circuit system. By using the system module we can created the one, three, five, seven time’s harmonic...

Self-lubricating spherical plain bearings are widely used in some important mechanical moving parts. When used in the marine environment, bearing components may be sometimes immersed by seawater. The salinity changes with evaporation or addition of water. This paper discusses the effects of salinity...

A modified road perception algorithm is presented based on the color image clustering segmentation. According to the comparison of color spaces' uniformity and integrity, an improved K-means clustering algorithm is proposed to segment color images in the space LAB. Firstly, the target area contains road...

This paper studied the antibacterial activity of the anthocyanins from blueberry wine pomace. The blueberry wine pomace, which is by product in blueberry wine process, is rich in anthocyanins, and the anthocyanins extract from blueberry wine pomace, then the extraction was purified and components of...

According to the division principle and method of parking inducing community, a parking induction partition model is established to determine the objective function and constraints of the study. The simulated annealing algorithm is used to study the partition model. According to the principle of simulated...

In order to optimize indoor light environment and solar radiation level in training stadium in Guangzhou, China, parameterization building design method is employed in the research, and a sunshade system response design strategy for training stadium with light comfort applicable for sports population...

In order to study the specific pattern of fragmentation penetrating the target plate under the influence of multi factors, this paper uses the artificial neural network method to identify the input parameters and obtain the corresponding target damage model. Based on the orthogonal design principal,...

This paper introduces a hardware and software structure and key technology of a new radioactive source vehicle recorder based on the 32 bit ARM processor. It is installed in the vehicle which has a radioactive source, it can detecting and recording important datas while the vehicle movement. Starting...

With the rapid development of cities, the building becoming larger and higher. That means the weight of building will increase , the disaster will cause a greater loss. Bearing column is the main stress components of building, determining the safety of the building under earthquake. Steel Tube Filled...

In this study, a three-dimensional model was developed by using CFD and TRACE to simulate the flow behaviors and thermal-hydraulic phenomena in the downcomer and lower-plenum of Maanshan PWR nuclear power plant (NPP) reactor pressure vessel (RPV). Detailed geometries of vessel components such as neutron...

Solvent selection is the key of solvent crystallization method In this paper, the optimal crystallization conditions for xylene and DMF extraction of refined carbazole is studied that the crude carbazole as a raw material, dissolved temperature is 85 , crystal-keeping time is 90min, the solvent ratio...

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...