Advances in Engineering Research

Roof greening has a series of advantages to improve the urban ecological environment. The roof greening plants resistance to the environment research is one of the scholars research priorities. In the text, the research progress in the studies of roof greening plant resistance are analyzed. Found that...

This paper aims to determine the optimal migrating route for refugees. Firstly, we develop a Secondary Fuzzy Evaluation Model SFEM to evaluate the metrics of refugee crises and allocate the refugees of six routes. Eleven factors are chosen as the primary factors of SFEM such as the number of refugees,...

The Construction Waste (CW) treatment resources have increasingly aroused concern because the CW disposal industry involves many subjects, including the unstable supply of raw materials and sluggish sales of recycled products and other characteristics, and industrial development hasn't yet reached the...

China depends heavily on coal to meet its electricity and economic development needs for a long time and it has surpassed America and became the biggest greenhouse gases emission country in the world.The appearance of biomass energy power generation has been easing the tension of domestic energy and...

The combustion control system for small-size circulation fluidized bed boiler is a three-tier distributed control system. The system consists of host computer, master station and slave station. Master station synergizes slave station to complete control tasks, and sends process variables to host computer....

Here we discussed the SIRS model of pulse spaying pesticides with vertical transmission and single species. Assuming that the incidence rate is periodically time-dependant and the total number of forest trees also changes over time, we studied the stability of impulsive model using piecewise continuous...

This paper proposes multi-filtering method to prevent DDoS attack. Several filtering methods are applied in two firewall architecture for effective DDoS prevention. In the first firewall, R-PA filtering algorithm and strict hop counter filtering method are applied by analyzing packet paths. In the second...

Water carrying capacity assessment is to reveal the relationship between water resources, population, and economy, fully use water resources, and make economic development go hand in hand with protection of water resources, which simultaneously promote sustainable social and economic development. Based...

How to evaluate the position errors of a hole group correctly is a key point in application and dissemination of position tolerance. In a coincident tolerance zone, a new concept, rotation of the theoretical center of the hole group, is raised here, by means of it, the geometrical reference frame of...

Trains can only carry cargo from one station to other stations. To arrive at the destination, the cargo still needs to be carried by other mode of transportation. About 80% of transportation in Java is dominated by roadway transportation by far. Many business doers prefer using trucks to trains because...

An optimization method for evaluating urban rail transit vehicle base schemes based on resilience theory was proposed. A comprehensive evaluation index system was established based on four aspects: asset resilience, network resilience, user resilience, and social resilience. An optimization method for...

The Japanese banana flower and pollen were analyzed by gas chromatography-mass spectrometry (GC-MS) technique, coupled with head-space solid micro-extraction (HS-SPME). The relative percentage of compounds were measured by retention index and peak area normalization method. A total of 48 volatiles were...

Paraffin regenerative ball physical model is presented in the paper, and the process of regenerative ball phase change heat transfer is simulated by FLUENT software. This paper expounds the temperature and liquid composition distribution in the process of the regenerative ball heat storage and heat release,...

An experimental study on the adsorption removal of phosphate onto a natural and cheap dolomite mineral was carried out. The effects of calcination temperature, holding time, initial pH and dosage on phosphate adsorption were investigated, and multi-variables interaction effects were explorated. The effect...

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...

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...

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...