Advances in Engineering Research

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...

By designing a dynamic impact test of tires, the "displacement - force" characteristics of tires under dynamic impact conditions are investigated to study the stiffness characteristics of tires under dynamic impact conditions. The accuracy and reliability of the tire finite element model are verified...

Biological immobilized technology is considered a potential instrument for the removal of heavy metals from waste solutions and for precious heavy metals recovery, an alternative to the conventional processes, such as those based on ion exchange, or adsorption on activated carbon. In this work the state...

In this paper, a high-speed real-time spectrum analysis system based on GPU parallel computing was developed for the real-time requirements in the application environment of satellite communication spectrum monitoring. The system adopts high-speed ADC and high-performance FPGA as real-time signal acquainting...

Ti-MCM-41 zeolite was hydrothermally synthesized by using tetrabutyl orthotitanate as titanium source and fumed silica as silicon. Powder X-ray diffraction UV-vis diffuse reflectance spectroscopy and inductively coupled plasma were used to characterize the product, results indicated revealed that the...

To study a folding table, through the structure of initial and final static state, determine the length of slot. Create a model on the basis of understanding the whole dynamic process and the structure of the folding table, and then determine the length of slot and the mathematical description of the...

Video encryption has the requirement of efficiency, security, discrete storage in cloud environment. In this paper, a method of multi-grained video encryption based on Spark framework is proposed. The design of distributed encryption framework and multi-grained encryption module are described. The distributed...

To solve the frequency aging problem of high-precision quartz crystal oscillator has been one of the most written topics in the international frequency control field. Aging prediction is a significant approach to the process of the long-term aging indicator problem. Aiming at the aging issue of the crystal...

This paper proposes a new image quality assessment approach based on Contourlet transform and generalized gamma distribution (GGD). The image is processed by Contourlet transform at first and the Contouelet coefficients are modeled by GGD. The parameter of GGD is estimated and the feature vector is formed...

Ce-doped ZnO thin films were deposited on simple glass substrate and SiO2 substrate by sol-gel technique. The characteristics were studied by X-ray diffraction (XRD), atomic force microscope (AFM) and photoluminescence (PL) spectroscopy, respectively. The X-ray diffraction (XRD) experiments shows that...

Conventional geolocation techniques include the time of arrival (TOA), the time difference of arrival (TDOA), the angle of arrival (AOA), the received signal strength (RSS) ,the fingerprint positioning based methods and etc. Among these location techniques, a method based on RSS has attracted much attention...

At present, the technology of line inspection robot for overhead transmission lines in China and abroad is close to the practical stage. But there are still some problems, such as electromagnetic compatibility (EMC). In this paper, based on the 220kV, 500 kV, 1000 kV and other high voltage transmission...

Ultra Wideband (UWB: Ultra-Wideband) with high spatial resolution and positioning measurement, has the ability of suppressing the multi-path effect and penetration loss medium. It contains abundant target information in the received signal. The compressed sensing theory is introduced into the imaging...

Authenticate our identity by sending a One Time Password (OTP) through Short Message Service (SMS) is widely used in nowadays. But SMS-based OTP faces with some problems make it not secure. This paper presents a way by using encryption to enhance the security of SMS-based OTP. We introduced a parameter...

The paper presents a numerical study of natural convective heat transfer of copper-water in an inclined square cavity where the temperature of one sidewall sinusoidal oscillates, the opposite sidewall is cooled at a relatively low temperature and the other walls keep adiabatic. The transport equations...

The midwater trawl is used widely in many oceanic fisheries. In this study, the midwater trawl dynamical behavior was simulated and modeled with the mathematical mechanic equations based on R language platform. A lump-mass and spring method was used to build the physical model. The huge mathematical...

To observe the improvement of Schisandra and Epimedium extract (WY) on the memory ability in mice. Methods: ICR male mice were randomly divided into control group, low-, medium- and high-dose WY groups. The mice were intragastrically given the same volume of distilled water, 300 mg/kg WY, 600 mg/kg WY,...

To refine the microstructure and improve the mechanical properties of the metal tubes, a new kind of severe plastic deformation process of the cyclic rotating bending (CRB) process was newly proposed. This study focused on the investigation of evolution of microstructure and mechanical properties of...

In this paper, K-means clustering algorithm is used to analyze pretreated monthly load data of power consumers from a certain domestic area in China. It can get different clusters in the month of August, and those can be roughly divided power consumers into different types, such as residents, businesses...

As digital imaging assumes crucial roles in the treatment of MRI images, X-ray images will be employed for evaluation and to detect tumor growth in the human body in the restorative field. As the tumor develops in the skull, it can cause extreme brain pressure and interfere with previously normal brain...

Unmanned Aerial Vehicles (UAVs) have emerged as a critical technological component with widespread applications in military reconnaissance, civil logistics, medical delivery, and environmental monitoring, with technological advancements fundamentally dependent on continuous innovations in structural...

Sugarcane bagasse cellulose (SBC) was dissolved in three imidazolium-based ionic liquids (ILs) [Emim]DEP, [Emim]Ac and [Bmim]Cl at the same conditions (1% mass loading, 110 ). Among the three ILs, [Emim]DEP has the highest dissolution rate and regeneration yield of SBC. Both the original and regenerated...

Treating soil compaction is the key to its construction quality control, but now its compaction evaluating indicator does not match with design specification in China, which makes design and construction control having disjointed phenomenon. Based on the deflections tested by FWD, the relationship between...

In recent years, the rapid development and wide usage of wireless sensor networks, makes it a research hotspot at home and abroad. Wireless sensor network is an open network, the sensor nodes can easily be captured or tampered. Ensuring network security is a prerequisite for communication. So, establishing...

Memristive neural network is applied to fault diagnosis of power transformer in this paper. A model of memristive neural network built by MATLAB Simulink can be used to diagnose and analyze the failure information. Experimental results show that the proposed method can achieve better results and has...

In this paper, we introduce a transform domain watermarking algorithm based on SV. It has good robustness. It also describes the principle of this algorithm in detail . With our new algorithm, The intensity of the watermark to be inserted can be adjust easily, and watermark information can be embedded...

Based on the analysis of the breaking of the roof between the lower layers of the short distance thin coal seam group with different spacing, it is proposed that the roof of the short distance thin coal seam can be divided into three types according to its lithology and the development of joints and...

The flexible inflatable wings has become a hotspot with its unique advantages such as the lightweight, portability, small folding volume, fast response, low cost and so on. But because the significant geometric deformation of the flexible film appears under the inflatable pressure, which seriously affects...

This paper discusses the peak of both glucose uptake and standards of polysaccharides are Gracilaria maximum absorption at 485nm, it is OK to select UV measured drawing and polysaccharide content in the sample solution of polysaccharide from Gracilaria glucose standard curve absorptiometry a wavelength...

The purpose of this paper is to analyze and measure the undergraduates’ pro-environmental behaviors and environmental attitudes and the relationships between them as well. The study shows three kinds of attitude in terms of environmental concerns and the sequence decreases; regarding pro-environmental...

Through analyzing the recent international nuclear power tender cases, summarize the new features of the markets and the divers demand of the customers. Remind China nuclear power cooperation to pay more attention to the demands of customer

Different sizes and shapes of BaSiF6 were synthesized by a low temperature hydrothermal method using citric acid (CA) as a chelating agent and cetyltrimethylammonium bromide (CTAB) as a surfactant. The sizes and morphologies of the BaSiF6 could be altered by controlled the molar radio of CA to Ba2+....

High temperature and hot sun environments are prevalent in many situations. The extreme environments have put forward a severe challenge to the health and safety of the outdoor workers. However, people in duty booth still stick to their post to guarantee social normal production and living activities....

From the perspective of information integration, as an example, this paper implements the integration of the central station of a satellite communication network, both horizontally and vertically. It proceeds from the satellite communication terminal equipments, redesigns connection between interfaces,...

This paper describes model testing of bathtub with the purpose of remaining the water temperature in the bathtub constant and reducing water waste. I establish a model and draw a conclusion. The model describes changes in the temperature of the bathtub water. The model has two parts: the one is endothermic...

This study focuses on the surface assessment of flexible pavement using the HDM-4 (highway development and management) and International Roughness Index (IRI) for state highway connecting from Miyapur to Medchal. The HDM-4 road deterioration models where utilized to make an effort to simulate existing...

A content match based on filtering solution is proposed to handle large number of users and songs for search engine as a recommendation system is increasing important in online video application, news recommendation and electronic commerce especially in search engine. Our method could be applied to search...

This paper proposed a new no-reference image quality assessment approach based on compressed sensing and mixture of generalized Gaussian distribution (GGD). The image is processed by compressed sensing at first, then sparse coefficients of compressed sensing are modeled by mixture of GGD. The parameter...

Localization of mobile station (MS) has now gained considerable attention. Since the transmit power and path loss exponent (PLE) are two critical parameters in received signal strength (RSS) localization technique, many RSS based location methods considering the case that both of the transmit power and...

In order to study the water quality of Lake Gucheng, a geographical information system (GIS)-based method was used. The spatial distribution of eutrophication conditions in Lake Gucheng was investigated. A trophic stated index(TSI) consisting of four physical, chemical and biological indicators including...

A energy storage device is essential in photovoltaic power system. The battery charge and discharge is a typical bidirectional DC / DC converter. According to design requirements, Buck/Boost DC/DC has been selected as the main circuit topology. The parameters of components have been set. The method of...

This paper mainly studies the electromagnetic vibration of a the three-phase asynchronous motor under no-load condition. A time-stepping finite element model of the three-phase asynchronous motor was built to calculate the transient electromagnetic field, and Maxwell stress tensor method is adopted to...

Air pollution has a significant impact on human production and life, the prediction of air quality's level is conducive to the relevant departments to take appropriate measures. This paper selects six basic pollutants PM10,PM2.5,SO2,NO2,CO and O3, which are stipulated in the "Ambient Air Quality Standard"...

The Philippines has a diversely beautiful topography which is an awe-inspiring combination of mainland and thousands of smaller islands. But as to the development of tourism, there is still a large gap between the Philippines and other Southeast Asian countries with highly developed tourism. However,...

The metro has the advantages of large capacity, velocity on time, safe and convenient, environmental protecting and energy saving. However, the government leading investment pattern has been unable to meet the needs of the expansion under the circumstances that metro had entered a rapid development period,...