Advances in Engineering Research

Risk evaluation involves not only the natural characteristic of hazard, but also the socioeconomic properties of the vulnerability. Therefore risk evaluation is a complicated but important scientific problem. According to the analysis of the developed characteristic, forming condition and influent factors...

Based on LabVIEW virtual instrument technology, the research project of a testing system is put forward to solve the problems of automation and intelligence. The virtual instrument technology is used to establish the virtual instrument of high integration and high intelligence. According to the test...

The underground water level of diversion tunnel is so high, that the power station in run-time will suffer enormous external hydraulic pressure, especially the marble show time dependent failure phenomenon, and increase the risk in run- time. For this reason, the reinforced concrete lining is adopted,...

This paper proposes a time-frequency method based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and Winger-Ville distribution (WVD) for hydro-turbine non-stationary vibration signals analysis. Unlike the traditional EMD and EEMD, CEEMDAN can efficiently reduce the mode...

The waste crumb rubber (CR) has been utilized to improve asphalt performance but it shows poor compatibility with matrix asphalt. The approaches of desulfurization and degradation of rubber are proposed to solve the above difficulties. The modified asphalts were prepared with using crumb rubber and desulfurized...

Accompanied by global climate variability and the increase in engineering construction, the problem of landslide disaster is becoming more and more prominent because landslide disaster has a wide range of hazards, high risk, and other characteristics, which makes the application of intelligent algorithms...

The photovoltaic method with solar panel modules with a capacity of 100 Wp can absorb heat and convert it into electrical energy up to 100 watts/hour. It is used for the citronella oil refining process which requires 57,550 kJ of energy. By using 4 solar cell panels, within 4 h the power generated can...

According to the high speed visual inspection requirements of steel cord pieces cut by steel cord body ply cutter( produced by a processing plant ) about edge size and angle, this paper proposed a new method of edge detection based on line fitting method. The method solved the error problem of steel...

With the increasing demands of car ride comfort, automobile brake noise has become a serious concern, so reducing automobile brake noise has become the primary task of automobile manufacturers and parts suppliers. This paper briefly describes the classification of automobile brake noise, the mechanism,...

In view of the current evaluation of the assembly quality of the standard components, the artificial visual method is used to judge it. However, when people do it repeatedly and in a high-intensity, which is difficult to meet the needs of large-scale industrial production. In this paper, according to...

With the increasing capacity of wind turbines, the key parts of wind turbine bear the increasing load, and the structural reliability have become increasingly demanding, thus, Requirements of wind turbine control system control algorithm, can not only realize power optimization control, also can achieve...

Language Rhythm is an important characteristic in language. Research and analysis the Language Rhythm, those four kinds of language rhythms prompted: language nature rhythm, language grammar rhythm, language logic rhythm and language emotion rhythm. Each language rhythms reflect the language characteristic....

Based on the investigation data on Cd in Jiaozhou Bay in May, September and October in 1983, were analyzed the horizontal and seasonal distribution, vertical variation and variation range of Pb, revealed the seasonal variation process, settling process and water’s effect of Cd. Results showed that Cd...

A hot bath is becoming a necessary event of people’s life. The temperature field of water in a bathtub is coomplex and always influenced by a series of factors, such as human body, bubble bath agent,the shape of the container.

A new synthetic approach to synthesize 2,3-dimethyl -2,3-dihydrofuro [3,4-b][1,4] dioxine-5,7 -dicarboxylic acid from a common precursor diglycolic acid was reported. Starting from the commercial material diethylene glycol, diethyl oxalate and 2,3-dibromobutane, the compound was synthesized through oxidation...

The capacity and the distortion are the two important indexes in the information steganography field. The research tries adopting the famous Median Edge Detection to judge the flat area and the complex area, combining the concept of the Human Vision System to embed a fewer confidential information. A...

Using laser scanning system for preparation of abutment body of data acquisition and accuracy analysis for the reconstruction of 3D laser scanner abutment preparations and by the method of reverse engineering established the 3D digital model of the simulated abutment, using professional software to simulation...

4-Substituted isonitroacetanilines 2 were prepared by the reaction of 4-substituted anilines 3 with chloral hydrate and hydroxylamine hydrochloride. 5-Substituted indol-2,3-dione 1 were prepared by the cyclization of 2 in the presence of concentrated sulfuric acid. 5-Substituted indol-2,3-dione 1 is...

Researched on conceptual model of C2 system agility, and designed simulation experiment platform. By using Agent, the simulation resources were packaged to be cooperative, to meet needs of agility. The agile C2 System was built according to military mission, it can sense changes and evolve, which makes...

The yield of sugar beet depends not only on soil and climatic conditions, but also on the quality of the distribution of plants along the sowing series of these plants. The maximum yield is obtained with the optimal value of the average interval between plants, and all intervals should be the same with...

With the development of modern technology, the diagnosis technology for mechanical equipment has attached more attentions. This paper mainly presents the fault diagnosing process for rolling bearing by using the hybrid GA-BP algorithm, which combines genetic algorithm (GA) with error back-propagation...

Based on the investigation of phytoplankton in 14 samples of the waters among Xiaowutai Mountain in August 2016, the species composition, evenness, abundance and diversity of phytoplankton in the Xiaowutai Mountain were studied, and then evaluated the quality conditions of water. The results showed that...

At present, the safety evaluation of long-span bridges in construction is a hot research topic in the world. Considering the main factors (cantilever erection, wind load and temperature change), which influence the change of bridge member stress during the construction phase, the reliability of construction...

The Internet of Things (IoT) has revolutionized various aspects of modern life, but it also raises significant privacy concerns. Fog computing, an extension of cloud computing, has developed as a promising solution to mitigate these concerns by processing data closer to the source. This survey provides...

This paper proposes a green, lightweight, and cost-effective wireless system for structural health monitoring (SHM) of bridges. The system utilizes an edge computing model, eliminating the need for traditional cloud services by enabling sensor nodes to collaborate with a local intelligent hub for data...

Cyclic Redundancy Check (CRC) is widely used for error detection in communications. As data transfer rates increase, traditional serial CRC algorithms face performance bottlenecks, making it difficult to meet high-speed transmission needs. To address this, researchers have turned to parallel CRC computation,...

Based on grey theory, integrating Analytical Hierarchy Process and information entropy, this paper put for-ward an effectiveness evaluation method of digital Logistics equipment system of systems; the index of digi-tal Logistics equipment system of systems was established, the method of effectiveness...

The acceleration of urbanization and climate change have caused a significant change on urban runoff mechanism. Urban flood control and drainage system become very important. Drainage pipe network has significantly affections on urban water hydrology characters. We used two methods to divide subcatchments...

With the rapid development of Internet, the network traffic explosively grows with the emergence of new network business. The existing electric power communication networks still have the traditional architecture that is the closed system highly integrated with devices and software, which cannot satisfy...

Aluminum alloy A6061 and mild steel Q235 sheets were welded by resistance spot welding. The interfacial microstructure was observed and the feature and distribution of the interfacial reactant were analyzed and the effects of welding current on the nugget size and tensile shear strength of the joint...

In this paper we study the relationship between economy growth and carbon dioxide emissions in Hubei Province by building Environmental Kuznets Curve, adding some influencing factors. The result shows that there is Kuznets' inverted U-shaped curve in Hubei Province, and the inflection point did exist...

To achieve a high-resolution imaging of targets in space, it is important to reduce the effects of atmospheric turbulence in adaptive optics systems. In this paper, we propose a simple and tunable low-order robust compensator for adaptive optics system, based on the robust model matching method. We have...

An accurate integrated position and orientation determination method for vehicles is provided in this paper, which utilises inertial measurement unit (IMU) and odometer. Firstly, inertial navigation calculation is accomplished by the outputs of IMU, and the attitude and position of the vehicle can be...

One-armed planet carrier's static stress analysis and modal analysis were accomplished by the finite element method. The deformation, stress magnitude and distribution and natural frequency of the planet carrier were obtained. Under the condition of satisfying the ultimate strength and fatigue life,...

The large power transformer will operate under low temperature in Inner Mongolia, Xinjiang and Northeast provinces in China. In order to study the breakdown characteristics of transformer oil-paper insulation at low temperature, a high-voltage and low-temperature test system for transformer oil-paper...

This paper presents a systematic investigation into the research progress on leakage current suppression in N-leg inverters for dynamic wireless power transfer (DWPT) systems. With the widespread adoption of electric vehicles, DWPT technology has emerged as a critical solution due to its convenient and...

The global energy transition and carbon neutrality goals have driven the rapid development of new energy vehicles (NEVS), while traditional internal combustion engine vehicles (ICEVS) are also under pressure to improve energy efficiency. Aerodynamic design plays a vital role in improving vehicle performance...

Pier No. 8 of Maling River Bridge was constructed by synchronous construction method of pylon and girder, while pier No. 9 was constructed by conventional construction method. In this paper, synchronous construction feasibility is analyzed theoretically by construction simulation computation based on...

This study proposes a Multi-Level Screening Identification algorithm for the automatic extraction and identification of impact craters based on CCD image. Considering of the comparatively low robustness of traditional algorithms, we design analytical hierarchy process in the new algorithm. First of all,...

In this paper, the advantages and disadvantages of various kinds of clustering analysis and boundary point detection algorithms are analyzed, Combined with intrusion detection to deal with the characteristics of the data object containing noise, varied types,uneven density, and large amount of data....

This article analyses the fluid dynamic characters of bloodstream in Y-type coronary artery based on fluid dynamics. Velocity at the inlet is given for boundary condition. The speed is equally distributed. The fluid conditions of bloodstream at bifurcation and in branch vessels are analysed in the main...

Based on the available observation data from meteorological stations in Henan Province from 1981 to 2010, annual and seasonal average soil temperature of each station during the past 30 years was calculated, monthly, seasonal and annual sequence of average temperature of each layer was generated, climate...

In numerical simulation of wave equation, in a limited area to establish artificial boundary absorbing boundary conditions, the angular point on the calculation area of the processing is also cannot ignore a problem. According to CE, MTF, PML three different boundary conditions, using different angular...

The ability of a region to provide clean water relates to many aspects of the physical and economic elements. We use natural and social indicators to evaluate this feature. To measure the ability of a region to provide clean water to meet the needs of its population, water demand and supply index (WDSI)...

The action of concentrated loads on spherical shell has been widely studied. The solution for a concentrated normal force was first obtained by E. Reissner in 1946 by using the classical theory of shallow shells. This problem was also considered by S.P. Timoshenko (1946), Stanislaw Lukasiewic (1979),...

Traditional old boiler is energy-intensive and highly polluted. Circulation fluidized bed boiler (CFBB) is characterized by environment-friendly, high efficiency and energy-saving. Hardware of Combustion control system for small-size circulation fluidized bed boiler is presented in this paper to transform...

Vehicles detection has a great significance on traffic congestion relief, traffic accidents prevention and treatment. This paper proposes an improved Gaussian mixture model (GMM) to detect moving vehicles because GMM always detects background for foreground in complex environment. The new algorithm combines...

This paper proposes a design scheme on the low-noise electrical tuning amplifier circuit of receiver front-end. According to key indicators to be achieved, it made a overall simulation design of the front-end amplifier by ADS, focusing on the analysis of the characteristics and parameter selection method...

The rapid rise of the mobile payment in China has brought a new round of opportunities and challenges. During this process, the safety problem becomes an important issue of the payment power in the future in China. Based on the general definition of risk, the paper considers the special need of tourism...

In order to provide high-quality service, companies must meet or surpass their customers’ expectations while also ensuring that their products are delivered on time and accurately. Higher education sustainability depends on students’ evaluations of service quality, and student happiness is becoming increasingly...

This Medical needle plays an important role in modern clinical medicine. The penetration and pull process of medical injection needle was simulated by FEM software Abaqus, and the equivalent stress and strain were analyzed. Self-developed mechanical loading equipment was adopted to test the penetration...

Green foams/aerogels based on nanocellulose derived from natural plant fibers have been extensively studied because of their great potential for applications in energy adsorption, energy storage, template, thermal insulation, sensing, and water purification. Progress in fabricating foams/aerogels using...

The article considers the mathematical model for calculating the magnetic circuit of a multipolar synchronous motor with fractional single-toothed winding and permanent magnets. The mathematical model is based on the technique of the tooth contours conductivity. The obtained model makes it possible to...

This paper presents an automatic traffic-sign detection and recognition algorithm based on sparse representation. Our system consists of several steps. In the first stage, we detect potential traffic signs using the most remarkable feature-color-extracted by HSI model, which is immune to lighting changes....

The combination of free planes in the corner of an underground chamber is complex. If the fractures cross the roof and walls, or floor and walls at the same time, a complex key block may exist. The theorem of finiteness in the classical block theory applies only to the convex block, and not to the non-convex....

In order to improve the accuracy and efficiency of no-reference blur image quality assessment based on General Regression Neural Network. We choose Simulated Annealing algorithm to optimize the method. Using LIVE (Laboratory for Image & Video Engineering) database as the initial study database. 174 images...

It is an important engineering problem that affected by the environmental factors, the performance of aircraft structure of carbon fiber reinforced polymer (CFRP) under the Marine environment has depredated; and it is an important means of analysis of CFRP material degradation by accelerating aging mechanics...

In the research of multi-spectral radiation thermometry, temperature measurement depends on the line shape of spectrum radiation remittance. However, in the actual measurement, the combustion, explosion and gasification on special occasions can produce some particulate matters which can create the phenomena...

A total of 60 cylindrical specimens with density of 425 kg/m3, 525 kg/m3, and 625 kg/m3, subjected to uniaxial compression were tested, under four different strain rates ranging from 10-5/s to 10-2/s. 15 specimens designed and casted on the same condition were tested for every set of case. The mean and...

Vibration of the working bodies decreases the force of traction resistance of the plough for ploughing the soil. Vibration is spontaneous and forced. Spontaneous vibration comes from the variable resistance of the soil, and forced vibration requires add

With the success of Shenzhou spacecraft rendezvous and docking with Tiangong-1 and Tiangong-2, the future tasks of the space station such as space garbage clean-up requires the control of spacecraft attitude to be more and more accurate. Because of the high cost of the attitude control and regulation...

Engineered Material Arresting System (EMAS) is a new type of soft ground arresting system that can safely arrest the overrun aircraft in an allowed distance without injuring aircraft passengers and damaging aircraft landing gear. When exposed in the outdoor, the temperature and humidity will have a great...

Therelationship between the energy of a high-speed proton when impacting onthe N-4 nuclear emulsion plane perpendicularlyand its range in the emulsion was investigated using classical SRIMMonte Carlo programand curve fitting method. A definite analytic expression was derived from this simulation with...

In the paper, we develop a model of temperature of tub water with energy conservation law. Meanwhile, we make a best way that can both keep temperature fixed and save water consumptions. First, we individually consider the heat exchange in three situations, which separately correspond model 1, model...

According to the characteristics of pharmaceutical practical instrument analysis course, and combined with the content of experiment teaching as well as the modern multimedia and network technology, to explore a new instrument analysis course teaching model which meets the characteristics of pharmacy...

The computer professional is an excellent major which reflects on the practice. To cultivate talents who of innovative abilities which are in line with the requirements of the era, strengthening experiment teaching and practice teaching is particularly important. What’s more, it is most important to...

Alloy composition of thin strip Solidification Microstructure Effects of larger, Al-8.5Fe-1.4V-1.7Si and Al-11.7Fe-1.15V-2.4Si alloy. At 20 m / s and wheel line speed and 0.7 x 105Pa jet pressure difference process thin slices of tissue, can see in addition to changes in grain size and a-Al grain accounts...

Tert-butyl-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (1) is an important intermediate in many biologically active compounds such as crizotinib. In this work, compound (1) was synthesized through three steps, using tert-butyl-4-hydroxypiperdine-1-carboxylate...

To solve the disadvantages of pressure relief devices in water supply system such as pressure relief valve and throttle orifice plate for high fault rate and high operation costs, the new type of the annular tube device was proposed, which has the advantages of simple structure, high reliability and...

Concrete supplier evaluation and selection in the building industry is one of the most critical processes for achieving a successful supply chain. In the past, technique for order-preference by similarity-to-ideal solution (TOPSIS) method has been extensively applied to the supplier evaluation and selection...

In this paper, a simple sliding mode control scheme, in which only the angular velocity and attitude angle have to be measured, is proposed to solve the non-minimum phase problem for a class of simplified linear model of saucer-shaped aircraft. The boundary of all closed-loop signals of the system is...

The Zero-velocity Update (ZUPT)-aided Extended Kalman Filter(EKF) algorithm is commonly deployed to resolve trajectories of pedestrians. To use the ZUPT, it is necessary to detect zero velocity intervals reliably. Existing zero velocity intervals detection algorithms cannot provides good performance...

Shale gas development offers a guarantee for energy supply but also brings environmental impacts. The particularity of shale gas development makes the use of oil-based mud indispensable. In this study, following the release of the Environmental Protection Act (2015) and the National Catalogue of Hazardous...

The phase composition of raw coal in Liupanshui Miluo area was analyzed by XRD, and the Hg content of raw coal was measured by atomic fluorescence spectrometer, and discussed the occurrence of Hg in the coal. The results showed that the Hg content in the coal increased with the sulfur, density, size...

The application of a fish Cool box using an outdoor split AC and the cooling materials are R22 and R290 refrigerants is one way to overcome the problems of fishermen selling fish in an effort to preserve the fish they sell, where so far the preservation method used is still using ice blocks or bulk ice....

This study investigated the association between viral load measured using RT-PCR Cycle threshold (Ct) values and infection trends during the waves, based on samples from the Ghana Infectious Disease Centre (GIDC). Nasopharyngeal and oropharyngeal swab samples were collected from two distinct populations:...

235 transportation accidents occurred in the year of 2015 involving dangerous chemicals were analyzed from the time of the accident cause, occurrence, location of accident. Identify risk factors in the transportation process. It is classified for risk factors, attributed to seven major categories. To...

A chlorogenic acid mediated synthesis of silver nanoparticles (AgNPs) from silver nitrate solution was investigated, and the preparation conditions of AgNPs were discussed. AgNPs could be rapidly prepared in a weakly alkaline condition, and the resulting AgNPs had an average size of about 35 nm. When...

This article do research into experimental technology of corrosion simulation at high temperature and high pressure and has formed an integral set of simulating experimental device basing on the technology. This technology includes injection system, simulated reaction still, research on vapour-liquid...

There are a lot of converters in the DC microgrid. These tightly regulated closed-loop converters may cause stability problem of bus voltage when used as a load. In order to improve the stability of the DC microgrid, a novel stabilization method based on exact feedback linearization is proposed. The...

This paper takes the plastic waterproof junction box production line as the object of study. It analyzed enterprise production status, and then drawn the fuzzy value stream status map by using the value stream map and the combination of fuzzy triangular number method. It improved these problems existed...

In order to understand the mechanical characteristics of foam concrete backfill steel corrugated pipe culvert, this paper uses numerical simulation to analyze the mechanical characteristics of foam concrete and pipe culvert structures with different backfill methods. The results show that when using...

In order to investigate simultaneously removing effect of iron powder(Fe(0)) on trichloroethylene (TCE) and hexavalent chromium (Cr( )) , Fe(0) was used to treat TCE and Cr( ) of polluted groundwater at room temperature and Features on the surface ofÿFe(0) surface were checked by Scanning Electron Microscopy...

The accurate and available engine rotate speed signal is quite essential to engine control, fault diagnosis, etc. This paper analyses the parameters optimization towards common processing methods of engine rotate speed, aiming at internal combustion engine closed-loop control. Basing on the Matlab/xPC...

Commercially pure titanium and stainless steel sheets were welded using resistance spot welding with interlayer of Nb. The interfacial microstructure was observed, the effects of welding current on nugget diameter and tensile shear load were investigated deeply. The results show that the interfacial...

Based on the analysis on the content and spatio-temporal distribution of volatile phenol, this paper assessed the pollution level, pollution source and source strength of volatile phenol in Jiaozhou Bay 1983. Results showed volatile phenol contents ranged from 0.50-3.38 g L-1 in the whole year, and were...

A type of truck crane frame was studied and the three-dimensional model is built by CATIA, then the model is imported into ANSYS Workbench to analyze the frame. By analyzing, the results of stress and deformation are got in 2 typical conditions; meanwhile weak parts of structure are pointed out, like...

The mean-field theory is used to study polarization behaviors in a ferroelectric thin film described by the transverse Ising model. The dependence of average polarization and layer polarizations of the transverse Ising film with two surface layers on the Curie temperature or transverse field is discussed...

Volcanic ash cloud can threaten the safety of aviation transportation. The current detection of the volcanic ash cloud mainly depends on the remote sensing images. Independent component analysis (ICA) and support vector machine (SVM) have very strong complementary to each other in the volcanic ash cloud...

To analyze the change of droplets number caused by collision and coalescence in gas/droplet two-phase flows, a stochastic model was established, in which the collision probability of two drops with different sizes was derived and the stochastic process theory was introduced to describe the change of...

This paper presents a video-based method to extract breathing waveform from the upper body movement associated with breathing, which is based on Eulerian Motion Magnification and principal component analysis (PCA). Using our method, we are able to obtain the breathing waveform which contains different...

The cold gas dynamic spray was used to prepare the Al2O3-Cu alloys coating on Al, Cu and steel substrate in this study with the mixture of pure Al2O3 powder and pure copper powder. The influence rule of coating performance for different ratios was analyzed. The results showed that at a relatively high...

Aiming at the measurement characteristics of the laser radar scanning system, the relevant error source analysis is carried out, and the main factors influencing the measurement error are listed. At the same time, the influence of the error source on its data processing and measurement accuracy is discussed....

Nowadays, the problems related to the generation of certificates through conventional techniques have given rise to a vast variety of certificate generation systems, which have also helped to cut down on the time required to generate certificates. Certificates are the part of institutions/organizations...

Specific Emitter Identification (SEI) is the method to identify the individual radio emitter using the transmitted signals' characteristic called Radio Frequency Fingerprint (RFF), which are originated from transmitter imperfections. A novel SEI approach to extract transient fingerprint features of energy...

This paper introduces the structure and principle of the capacitive corn moisture sensor, and focuses on the mathematical model and the equivalent circuit of cylindrical corn moisture sensor, also conductes a preliminary analysis of the factors affecting maize water measurement accuracy, provides a theoretical...

It briefly introduces the characteristics of prestressed CFRP plate and the new reinforcement bridge technology of prestressed CFRP plate and conducts a theoretical analysis on the principle of reinforcement design in this paper. ZhuJinDu Bridge is provided with reinforcement design by the prestressed...

This In order to solve the problem that the spatial matching is difficult and the spectral distortion is large in traditional pixel-level image fusion algorithm. In this paper, we proposed an block-based compressive sensing image fusion method based on particle swarm optimization algorithm. We get the...

Using morphological Charts to extract product parts as design variables is a widely applied method in traditional Kansei Engineering so far, but this method has low practical value for Kansei design. Taking morphological characteristics instead of product parts as extraction principle, a breakthrough...

With the development of computer technology and communication technology, computer network will increasingly become important information exchange means, penetrated into every field of social life. Therefore, realizing the network vulnerability potential threats and various security problems of the objective...