Advances in Engineering Research

The classical MEKF algorithm represent the estimation error vector in the estimated attitude coordinates, without considering the deviation between the estimated attitude coordinate and the true attitude coordinate. GEKF algorithm used geometric transform introduced error consistent representation method,...

Chunks are commonly used in academic written register, and there are quite remarkable differences in chunk features between disciplines. Based on a corpus investigation into 4-word chunks in research articles of engineering discipline, the present study has found that researchers in this field most frequently...

Several links of water resources allocation is introduced in city, on the basis of supply analysis, water demand prediction and supply-demand balance analysis, the frame of water resources allocation and the structure of urban return water are put forward, in view of the present research situation ,...

Based on the meteorological data, Kunming located in the subtropical plateau monsoon climate area, is proved to have clear dry and wet seasons with aboundant precipitation.The light and heavy rain have a great influence on surface runoff.The average annual evaporation is more than the precipitation which...

The high penetration of wind power brings in new challenges for power system secure operation. As forecast error of wind power exists, system economic dispatch model needs to be enhanced to accommodate such uncertainty. Based on interval optimization theory, wind power and load uncertainties are described...

The combined overvoltage protection is a new type of overvoltage protection devices. Its principle and performance are the same as conventional lightning arrester. It also has unique advantages. Phase combined over-voltage protection can limit the over-voltage between phase and earth.While it can limit...

Data mining is used to find useful information from massive data. Frequent pattern mining is one important task of data mining. Recently, the researches on frequent pattern mining for semi-structured data have made some progresses, and it also have a lot of focuses for data stream. However, only a few...

The typical 60Co irradiation room of hanging chain conveyor has been taken as a research subject. Ignition temperatures of common radiation cargo were measured through the experiment method, minimum ignition temperature is 210 °C. To get the temperature variation and temperature field under stuck radioactive...

A stable pressure driving system was designed in this paper, which can be used in Microfluidic Chips to driving reagents. Herein, two embedded controller units are used to control the stability of the reagent bottles pressure, for driving the reagents flow steady on the microfluidic chips. All parameters...

For a saturated soil, a saturated poro-elastic model is more realistic than the linear elastic or the visco-elastic one. Based on the Fourier transform method in the frequency wave number domain, the expression of the equivalent stiffness of the saturated poro-elastic half space interacting with an infinite...

At present, China is at a critical stage of socialist modernization and further development of the social economy, making life, learning, and the production of electrical energy demand continues to increase, the quality and security of supply requirements more stringent, while dispatching automation...

At present, the feature machining is recognized automatically for the typical CAM software, but there are some shortcomings in the technological rule base which support feature machining scheme. First, the classification and data model and the identification method of manufacturing feature are given....

Form the situation of military aircraft use civil airports, in order to improve the efficiency of the civil airport parking position, this paper gave a new idea that military and civilian aircraft use a shared parking position together, studied capacity and utilization of shared paking position, computed...

In order to better carry out the research on the flood control capacity of the flood control engineering system in Nanning, using the SAR(1) model to simulate various 50 thousands of flood process of Baise reservoir inflow and Baise-Nanning interval, and analyze the independence and applicability of...

The paper has built a wind farm ground on Doubly Fed Induction Generator (DFIG). It proposed a novel strategy of DFIG, which can be as active power source to supply active power to network, and as reactive power source to provide Var compensation (reactive power absorbed or generated) or stabilize voltage,...

The logistics industry is regarded as a new product of the new time, and it is quickly covering most of the region. This paper is devoted to simulate the operation process of logistics park, the Arena modeling is used to construct the ex-warehouse and warehousing model of logistics park for its more...

Population, economy, resources and environment have received considerable concerns for human beings. A lot of resources are consumed due to demographics and growth prospects, while excessive utilization resources result in environment pollution problems which are intensified the conflict among environment...

Based on interrelated experiments research of RC beam strengthened with unilateral steel-slab-bonded and practical engineering needs, the technology of RC floor strengthened with bilateral steel-slab-bonded is presented. According to section internal force equation relation and classical theory about...

TCable system is an important part of the aircraft.As the plane "nervous system",cable system is the important role of carrying out electricity, assigned signal and transmission tasks,but also to provide contact information between each system control. The volume and weight of the cable is restricted...

Landslide protections are ultimately races against time. Through analyzing the landslide, we can take prompt measures to prevent further decline and avoid heavy losses. By analyzing highway landslide of crest EHV power tower formation mechanism, calculating and analyzing landslide stability, this paper...

Digital filter is a basic algorithm to speech, image processing, pattern recognition, spectrum analysis and so on. It plays a very important role in digital signal processing. At present, many designers use software tools such as Matlab to model and simulate the digital filter. This paper described the...

This paper based on the concept of direct lightning and induction thunder introduction, discusses the direct lightning in the calculation formula and its size (lightning over voltage amplitude is generally higher, up to tens of thousands of volts). In this paper, the calculation formula and the magnitude...

This paper intended to improve the comprehensive performance of the material by introducing zircon powder in magnesia-based castable. It was found that forsterite generated at the medium temperature, resulting that apparent porosity of the samples increased, bulk density decreased and cold crushing sthength...

In order to explore the three-dimensional topography information of complex deep cavity wall, making use of the imaging principle based on optical coherence tomography (OCT). Building up the experiment system by combining the OCT with endoscope. Developing the related system platform. It is verified...

In modern society, tennis has not only become one of the most popular sports, but also been included in the Olympic sports, which shows its particularity. Serve technique plays a significant role in tennis sports, which is even a weapon for success. However, according to the actual situation, Chinese...

To facilitate the intelligent virtual terminal to analyze the object pool data, the basic characteristics of object pool data are studied and the data storage structure of object pool in the virtual terminal is presented. According to the technical standard of virtual terminal based on ISO11783-6, the...

In order to improve the stability and reliability of the two-wheeled self-balanced vehicle, a redundancy dual-backup method of the battery pack is proposed. The redundancy dual-backup scheme for the power supply system is presented, and the failure detection and switching method are given. In order to...

In order to increase bandwidth efficiency of band limited communication system, a new multi-band digital modulation scheme based on Quaternary Carrier Orthogonal Sinusoidal Non-linear Chirp Keying (QCO-SNCK) is proposed. Firstly, by analyzing the orthogonality of SNCK modulated waveform samples, 4 mutually...

Power industry is one of our basic industries, the development of the national economy and national security as well as energy has a very close relationship, and with the continuous development and progress of society, the status of the power industry is becoming increasingly important. However, in the...

Considering the angle deviation of the molten pool images that is caused by the different position of multiple cameras in the process of the laser welding image acquisition, this paper put forward a kind of new image registration method based on quaternion and geometric moment, which expressed the molten...

To bridge the gap between undergraduate electrical engineering curriculum and the modernizing electric power grid, Smart Home Testbed projects are ideal for undergraduate student design and research programs. Observed the fact that Smart Home Testbed projects are small-scale and short-term, a three-layer...

The fire smoke movement of urban traffic link tunnel (UTLT) under the semi-transverse ventilation was studied by Fire simulation software(FDS). With the method of theoretical analysis and numerical simulation, 3 fire scenarios have been designed to obtain the fire smoke movement. The analytical results...

Taking Deng Shahe Industrial Zone adjacent to Port control detailed planning as an example, puts forward the concept of lower limit control of plot ratio in industrial land use and upper limit of the greening rate, to ensure the rational and intensive use of land resources, we research conditions of...

Variations in the acoustic emission parameters of normal concrete (NC), steel fiber reinforced concrete (SFRC), and nano SiO₂ fiber concrete (NSFC) with the increase in loads under four-point bending load were studied. Distribution law of acoustic emission signals and its correlations with flexural strength...

In order to investigate the relationship between city and energy, three types of relationship, including relationship between energy and resident life, relationship between energy and urban growth and relationship between energy and environment in a city, was established in accordance with economic theory....

For on-orbit servicing of large valuable satellite, docking ring is a typical and strong component, which is fit for grasping by a space robot manipulator. In this paper, a novel method for measuring the relative pose of partial docking ring is proposed by introducing double-line structured light. Firstly,...

In the visualized network simulation system, both hardware and software resources are partly occupied to run the simulation nodes. And distributed simulation service is required to be provided by multiple physical servers if the scale of simulation network is rather large. In order to solve the problem...

An IoT-based wireless intelligent testing instrument is developed for static load test of piles, and it is applied to a field test in order to measure the axial compressive bearing capacity of a pile, while traditional wired devices are also deployed in the same test for comparison. The comparison shows...

In the popularly used BoVW and VLAD models for image retrieval, feature extraction is easily affected by the color and textures of images. Also, the clustering results of K-means algorithm used in these two models is usually affected by the initial cluster centroids. In order to solve these problems,...

In order to deeply understand the loading characteristics of the subway station and summarize the factors that influence the loading of the structure,we need to adopt the method of simulation to analyze the loading of the structure.The main structure static is simulated in ANSYS using an example of interchange...

In this paper, the method to confirm the sedimentary environments and microfacies of reservoirs of complex carbonate oil reservoirs was illustrated on the basis of cores and logging data. The sedimentary environments of reservoirs are petrographically confirmed on the basis of rock color, sedimentary...

High precision micro displacement measurement framework is fundamental for drilling strain gauges. We try to combine Duffing Chaotic Detection (DCD) method to replace the traditional lock-in amplifier method in drilling strain gauges. Simulation results showed that the DCD method is better than lock-in...

With the development of shipbuilding industry, "Green Ship" design and construction will play the leading role in the future , to keep long-term and healthy development, we must carry out the green shipbuilding, and change the ship models .Environmental problems bring more and more restrictions on which....

Aiming at the problem of network model and analysis of reconnaissance satellite application information system, a modeling method is proposed based on complex network theory and a network analysis method is proposed based on task submap. This paper first defines the composition of reconnaissance satellite...

Many studies on static frequency characteristics have been done yet nodal dynamic frequency response characteristics gain more attentions for the important role frequency plays in power system stability. Influencing factors such as balance power, power shortage and electrical distance are altered during...

This paper's aiming at the standard transformer stage that they don’t have the obvious position for hanging a grounding line. For solving the problem, and develop a kind of special grounding line for the standard transformer stage. The grounding line is the copper mesh structure of three layer hollow...

The observation of the frozen wall cannot be directly monitored, and it is needed to take an effective monitoring system to monitor. This paper presents the application of the one line bus technology to develop the mine ground freezing monitoring system, and the system is introduced in detail. By combining...

Binary translation system, a technique for translating executable binary program, could transform the code operating on a system structure into the command of another system structure. However, in multi-source translation system, the efficiency in floating point instruction translation realized by relying...

According to the energy balance equation at the ice bottom, the ice bottom energy balance system has been given, and the existence and uniqueness of the solution of the system has been proved. The oceanic heat flux is selected as identified parameter and the the ice thickness deviation as the performance...

The quantitative relationships between the calcination temperature and the crystalline characterization, the activity and the expansive properties of MgO expansive agent were explored through XRD-Scherrer formula, the citric acid method and the length measurement method. The results show that, under...

In this paper, structure control effect of joint network rock mass on seismic response of underground cavern is investigated. With discussion of the generating principle of 2-d joint network, five characterizing parameters, i.e. as joint density, joint orientation & its discretization, joint trace length...

Nowadays, because of the environment factors, such as the related legal policy is imperfect and the management of the construction enterprise does not reach the designated purpose and the management of the construction enterprise does not reach the designated purpose, the environmental management of...

In order to suppress the imaginary intrinsic part interference of OFDM/OQAM system in radio channel, a new pilot design approach is proposed. The new design approach can suppress the intrinsic imaginary interference in quasi-stationary channel and reduce the pilot peak power due to sparse data forms....

According to the principle of electric field polarization, we sputtered one or a few silver squares on substrate to strengthen polarization of local electric field in the depositing system of silver nanowires in an ultra thin liquid layer. In this paper, we observed electrochemical dissolving inside...

Jump techniques of five left-side-hitters (who had participated in the China College Volleyball League) are observed and tested by Telemetric EMG testing instrument, Common Speed DV and Synchronizing signal generator. Based on the extensive and interdisciplinary analysis on sports anatomy, exercise science...

An economic operation control strategy of island microgrid based on optimal scheduling of energy storage is proposed in this paper. The state of charge (SOC) and type of microgrid is fully considered in this strategy. In grid-tied island microgrid the energy storage charging control is carried out according...

Fiber Bragg grating temperature sensor has the characteristics of strong anti-jamming capability, distributed measurement which has a good application prospect in all kinds of industrial fields. But in the actual measurement of surface temperature, error caused by temperature gradient caused of the FBG...

Determination of traces of metals in gases is achieved by using a combination of a Pyrex Gas Washing System and ICP-MS methods. A special purge and blank installation is designed to clean the system with purified Helium (6N). Three 125-ml bubbler tubes in series with a 20 ml of nitric acid (~20%) are...

Industrial Control System (in short, ICS) is an important part of state fundamental infrastructure whose safety concerns national economy development and people’s property and life safety. Flaw discovery is the key of ICS defense. If attackers find flaws in ICS and use them for attack, the consequence...

Cleaning problem is extremely important to heat exchangers in industry such as crude oil processing systems because fouling can not only bring the reduction of heat transfer efficiency, but also affect the safety of the system. Common cleaning technologies used in shell and tube heat exchangers such...

The Pastor-Zienkiewicz-Chan model based on the generalized plasticity theory can simulate the main materials of the earth-rockfill quite well. The three-dimensional modeling of a typical earth-rockfill dam was modeled by HYPERMESH and was implemented into the three-dimensional elasto-plastic program...

his paper discusses the problems existing in the use of drop-out fuse: due to wind swing and other reasons, the bonding point of Cu-Al contact is easy to break, which may lead to the malfunction; the actual contact area between under contact and Cu-Al contact in transformer lead wire is insufficient...

People demand for electricity is growing with the development of society. To make the power system can operate safely and reliably, relay technology in China has been very good development. With the development of technology department for the development of relay technology has injected new vitality,...

With the development of large capacity and high parameters of power plant boiler, water wall high temperature sulfur corrosion of coal-feed boiler is becoming more and more frequent. Some of these corrosion even have affected the boiler operation safety. In this review, the domestic research in high...

In order to guarantee the quality, functionalities and characteristics of remanufactured products, the quality-detection is obligatory and important. A research on quality-detection for boom cylinder remanufactured products is accomplished in this paper. Remanufacturing technological requirements of...

Alkali activated concretes possess the significant advantage over the traditional cements on their low footprint. To test the application possibilities of alkali activated concretes, a pilot-scale production of these concretes for marine engineering application was performed at the precast concrete manufacturing...

To analyze the effectiveness of pollutant cap control mode towards pollutant reduction and the improvement of water quality in the section, this paper took the Huangshui River Watershed as an example, with main pollutants COD and NH3-N as the main indicators. And established a water quality model based...

In view of the influence of complex condition on the basic of the accident and caused huge losses, this paper uses the FLAC3D numerical simulation analysis on the foundation stability under intensive rainfall simulation software, to provide a basis for site selection of reasonable support method. Research...

Energy demand is closely bound up with the problem of global climate change, environmental pollution and carbon emissions, which is always a hot issue that the world is paying attention to, especially the energy demand scale is the focus of social attention. Therefore, it is highly urgent to forecast...

The collapsibility has become a key material property to study strength and deformation behavior of loess, which is closely related with its micro structural character. In this paper, the authors firstly obtained simple micro-structural parameters both on loess samples of before and after collapsing...

According to the needs of the practical application in the indoor environment by the wireless localization method with high precision and low cost, an indoor location system based on the SOC location engine is designed, using ZigBee network and RSSI information, we also give the system scheme with the...

A fuzzy comprehensive evaluation model was built to allocate the reliability of production line combined with the actual case studies. The production rate was converted to inherent availability in the calculation. Considering the buffer, we corrected the allocation index. Combined the opinion of relevant...

This paper proposes a sensor dynamic scheduling algorithm of midcourse target tracking. This algorithm increases SNR constraints to optimization function which treats Geometric Dilution of Precision (GDOP) as the scheduling criterion. Firstly, by analyzing the different process technologies of midcourse...

In order to get the change of surrounding rock temperature during hot dry rock reservoir productive process, we used the Transport of Unsaturated Groundwater and Heat (TOUGH2) software to simulate the model which attached surrounding rock to hot dry rock (HDR) reservoir. On the condition that we set...

Shear strength of trapezoidal corrugated steel webs is an important issue for the design of box girder bridges with trapezoidal corrugated steel webs. In this study, a shell element FE model of trapezoidal corrugated steel webs is firstly built for the further analysis of shear behavior. Extensive parametric...

In this paper, we research on the haze development in Beijing-Tianjin-Hebei region. Considering the wind power development is synchronous with haze development in the upstream of the region, we infer that the wind power farm have a significant effect on atmosphere of the lower drift region. First, we...

In this paper, the performance of biological method for the purification of high concentration formaldehyde waste gas was studied. The experimental results show that when the concentration of formaldehyde in the exhaust gas is from 100mg/m3 to 350mg/m3, the removal efficiency increases, and the removal...

In this paper a new permanent magent synchronous motor (PMSM) rotor position estimate algorithm is discussed. The algorithm adjusts the estimated rotor position PI controller, makes the rotor back electromotive force produced by rotor permanent magnet on d axis veins. Compared with other PMSM position...

In recent years, the complex high-rise buildings are increasing.The complex structure and transfi-nite structure often need to adopt the medium earthquake design. This paper first introduces the concept and design method of the medium earthquake design.Then,take a taransfinite frame shear wall structure...

The development of micro devices is mainly restricted by chemical battery. Scientists have proposed the method to collect energy from the surroundings and convert it into electrical energy. This article summarizes different energy management circuit modules systematically and sums up the circuit structures....

A novel photochromic diarylethene which called 1,2-bis-[2-methyl-5-(9,9-diethyl-5H-fluorene)-3-thienyl]perfluorocyclopentene was designed and constructed successfully. In the meantime, its photochromism and fluorescent properties have been discussed systematically. This compound exhibited excellent photochromism,...

With the development of science and technology, for the corresponding "Internet plus" agriculture, this paper puts forward based on streaming media technology "agricultural information service platform" design, introduces the design and implementation of agricultural information service platform of the...

This paper analyzed the content and distribution of Cadmium (Cd) in surface waters in Jiaozhou Bay in 1984. Results showed that Cd contents in the study area ranged from 0.06-0.20 μg L-1, and were meeting Grade I (1.00 μg L-1) in National Sea Water Quality Standard (GB 3097-1997), indicated that this...

Currently, the domestic social and economic development quickly, the grid size is also growing, prospects of power communications brighter. Power communication network is reflected in all aspects of the power of industrial production, power communication applications in the smart grid can effectively...

In this paper, based on finite element (FE) software MSC.Marc, a two-dimensional nonlinear thermo-mechanical coupled model is established to investigate the hot shrink-fit process for the reactor coolant pump rotor-can. By using this model, the limited time and temperature evolution for hot shrink-fit...

Fouling in heat exchangers for crude oil not only increases the heat resistance affecting the heat transfer efficiency, but also enhance the flow resistance increasing the energy consumption and even leading to safety problems. This paper performs a special kind of cleaning ball made of stainless steel...

Noise is considered as the one of the main occupational health and safety concern. When it comes to industry like mining where heavy earth moving machineries were used for basic operations, noise is generated hugely. Numerous previous studies have raised this concern but those studies are limited to...

An excitation mode for magnetic coupled resonant wireless electric power transfer was proposed, and its equivalent physical model was built. Mathematical expressions of transfer power and efficiency were built through analyzing operation mode and time-domain waveform thereof. Energy transfer characteristics...

University campus landscape as a unique cultural space should embody the humanistic value and cultural connotation undoubtedly. In the article, by investigating ten universities in Jiangsu Province and by analyzing the current campus culture and landscape construction, the author set forth the necessity...

This paper puts forward a method for automatic recognition of images on cigarette cartons taking advantage of the uniqueness of the barcode on the carton. It is to solve the mismatch problem between the traditional way of manual rechecking and the high-speed automatic sorting system. Based on the square...

For a class of nonlinear systems with uncertainty, a fuzzy sliding mode control method based on particle swarm algorithm, combined with the strong robustness of sliding mode control with fuzzy control is a good approximation capability, use the quasi sliding mode control make the system tracking error...

Chemically bonded cementitious materials possess the high performance properties and excellent durability. They also have a set of special properties, such as low heat evolution. The study focused on the relationship between concrete mix design and heat evolution. On based on the experimental and calculating...

Permanent magnet synchronous motor (PMSM) driving stable platform directly is often used in guided rockets. Due to the extended state observe (ESO) contained in the active disturbance rejection controller (ADRC), it can estimate the speed of the rotated carrier and the uncertain disturbances accurately...

Although construction stage possesses shart time in building life cycle , comparing to operations period, energy of consumption and carbon emissions concentrated. How to control carbon emissions at the construction stage.After investigating and researching.it summarized 24 main influencing factors.Then...

The effect of enhancement agents on the efficiency of electrokinetic (EK) remediation of contaminated soils has been extensively studied in the past few years. However, the larger scale ex suit EK remediation with enhancement agents has been rarely reported. In this study, medium-scale EK remediation...

Comprehensive geophysical prospecting has been widely used but the theoretical evidence has not been clear by most researchers. The paper shows out a one dimension seismic refraction simulation by ray-trace technology under a one dimension horizontal geo-model. And then using digital filter method and...

With the rapid development of China's economy, advertising has already become the main means of businesses, enterprises and departments to promote their advertising. Using advertising to publish advertising has gradually been widely recognized and accepted by all people. In this context, through the...

In order to explore use the boundary operations to establish topological spaces of rough set, in this thesis the logical reasoning method is used to experimental study on the relationship between the rough set and the topological space, according to the experimental results can reach conclusion that...

In order to obtain all the optimal solutions of multimodal functions as much as possible, a multi peak function optimization based on uniform design is proposed. The algorithm adopts uniform design to initialize the population and ensure the uniformity and diversity of the initial antibody population...

In this paper, based on the 190 monitored city data released by the China National Environmental Monitoring Center in 2018, the optimal scale and factor analysis methods were selected to conduct in-depth research and analysis of urban air quality. The study found that: PM2.5 has a serious impact on air...