Advances in Engineering Research

The vulnerability of power system is always one of hot areas, which was concerned by many researchers in last several decades. In this paper, a state vulnerability assessment model and index based on the margin of voltage stability is introduced, namely comparing the margin of the actual operating voltage...

High temperature corrosion behavior of Ni-Fe-based Superalloy GH984G was studied in the synthetic flue gas environments with different SO2 concentration at 800 C. The microstructure and composition of the scales were investigated by scanning electron microscope/energy dispersive spectroscope and X-ray...

Recently, quantifying the complexity of the physiological time series has become more and more concerned. As one of the most complex physiological signals, electroencephalogram (EEG) including a large number of physiological and pathological information attracts widespread interest. However, many traditional...

Experimental comparisons of coke qualities with and without pitch incorporation during biomass/coal co-carbonization were conducted. Meanwhile, effects of biomass and pitch on the thermoplastic properties of the biomass/coal blends and coke quality indexes, such as M10, M40, CRI, and CSR were also discussed....

The relationship between stress, displacement of the crack tip and stress intensity factor is mainly discussed. Calculating K1 of type I crack by finite element software ABAQUS. The effects of different crack forms and the corresponding stress intensity factors on the mesh size are compared. Research...

Traffic is an important area of cloud computing application and development, and the traffic cloud computing is a key means to provide powerful support for the basic service and promote the coordinated development of the transport system by service model innovation and information resources integration...

The appear of new medias in this media era greatly influences the current college ideological and political education, which however still fails to get rid of the traditional education ideals and sticks to the one-way instillation in teaching with positive information only. Actual practice is neglected,...

The gallop of high voltage transmission line can lead a mass disaster to power facilities but it seems that people are not clear totally about the galloping mechanism. To make sure the safety of power grid, this paper studies deeply on the galloping oscillator model of transmission conductor and given...

Some specific airworthiness regulations about the precision of the velocity, pressure and height measurement have listed and formulated here. Computation are done to get the exactly value of the requirements about static pressure residual installation error at a range of height and velocity.

There are more and more applications of Solar water heater in urban and rural, the research and development of advanced Solar water heater control system becomes more and more important, to improve the working performance and convenience of solar water heater. According to the requirements of the solar...

Represented by the Xingzi Station, it was studied that the Poyang Lake water level change trend in nearly 60 years. The improved MK test and homogeneity test are used to detect trend and change points in the series of maximum and minimum water levels. Furthermore, the relationship among extreme water...

Applying Educational Data Mining (EDM) for decision making is an emerging interdisciplinary research field. From the view of student development, this paper presents a framework for educational decision making, which can explore some laws and characteristics in student development to improve educational...

With the emergence of a large number of 3D human motion capture database, which makes how to efficiently analyze and process the data of human body movement, and make use of the motion capture database become a new challenge. In order to reduce the high dimensional complexity of the data, firstly, a...

The purpose of this paper is to explore the new relationship between the travel time and traffic flow on the road in the static state that inflow equals outflow. This paper proposes selection mechanism by a parallel two-link network model. Through computer simulation, we get the conclusion that in the...

This research presents data from The Higher Education Data Base (PDDikti) in 2019 Higher Education Statistics to investigate the gender representations at higher education level and faculty members limited to universities in North Sumatera. Then, reviewed about challenges of young Indonesian women in...

A series of low cycle fatigue tests under stress control were conducted for the smooth and notched specimen of 022Cr17Ni12Mo2 stainless steel. The ratio of fatigue strength of smooth specimen to notched specimen decreases with decrease in fatigue life. The notched effect is more significant at lower...

The performance for fuse electronic components may have degradation after long-term-storage. In order to as-certain the components which its performance has degradation, two fuse electronic parts, which have been stored for 10 years, are chosen as samples for an accelerated test. It shows that the white...

Big data is the focus in power system currently. In order to analyze and classify the electricity model of clients, identify the avoiding peak space intelligently, extract value-added information of clients and control the electric load actively, it is extremely necessary to analyze the information of...

At present, the resources integration and sharing efficiency between the government systems is not high in China. The phenomenon of repeated system development is common, which results in a tremendous waste of resources and cannot be adapt well to the information exchange, sharing and unified management...

In order to research the feasibility of aluminum honeycomb mat to sustain S aircraft over austere airfield pavement, static loading test was applied in field experiment. Three test sections were constructed with different strength. The instrument results (displacement and strain) of testing were used...

Accurate fault location is helpful to improve the stability of power distribution network. With the integration of distributed generations and electric vehicles, the traditional distribution network gradually became the active distribution network, which requires new technologies for fault location....

Two Lagrangian models are developed for the accurate simulation of advection-diffusion transport in unsteady open channel flows. The first one is based on a second-order partial differential equation (PDE) for pollutant concentration (model I), and the second one is a first-order system with diffusive...

With the rapid development of science and technology, more and more advanced technology can be applied in power plant, include centralized control system. The automation level of power plant can be continuously improved by application of centralized control operation technology, which played a very important...

The pile-soil stress ratio refers to the ratio between the stress of the pile top and the average stress of the soil among piles. It is an important parameter reflecting the operation status of the composite foundation, as well as a significant index to calculate the bearing capacity and the settlement...

This text studies coated material as the Rosin Glycerin Ester and preparation the coated -released-fertilizer, Studying the effects of soil moisture and temperature on nutrient release of coated compound fertilizer. The result shows that the temperature and soil moisture content have great influence...

By means of magneto hydrodynamic modelling based on magnetic vector potential and UDF programming, a numerical simulation is conducted for the heat transfer and flow process in the free-burning arc, which enables the coupling calculation of flow field and electromagnetic field. In consideration of the...

In the frame-shear wall structure FSWS of reinforced concrete, the coupling beam of shear wall (CB) and frame beam (FB) up the corresponding part of which has a stage of working cooperatively under horizontal load. However, the research on the whole working mechanism of the CB and FB under that stage...

Based on investigation dada on lead (Pb) in July, August and October 1984 in Jiaozhou Bay waters, we analyzed the content, pollution level and distribution of Pb, and defined the major sources of Pb. Results showed that Pb contents in 1984 in surface waters were 0.72-36.00 g L-1 and were meeting Grade...

Analysis and mining of stream data is a hot research topic in recent years. In order to improve the clustering efficiency, based on MapReduce, this paper proposes a Parallelized Stream Data Micro Clustering Algorithm PSDMC for the micro-clustering phase of CluStream algorithm. PSDMC algorithm uses a...

Based on a combination of BP neural network and SVM, aluminum plate surface defects classification was discussed. In order to detect the defects, the target image is binaried by adaptive threshold method. After binarizing the target image, extract the characteristic value of six kinds of aluminum plate...

For solving the associated gas outlet, maintaining oil and gas pressure balance and increasing the output of a single oil well, the development strategy of gas injection in gas cap and horizontal well development in oil rim was proposed in Aryskum oilfield. The location, length and distance of horizontal...

In order to meet the requirement for the automatic cultivation bed matrix filling for potted vegetables in production, a cultivation bed matrix filler, consisting of the enclosure, rotating device, filling device, compacting device and control system, is designed with SolidWorks. The result of the trial...

This research is aimed to analyse and determine the level of customers' satisfactions towards Commuter line service. This is a descriptive quantitative research. The data collection was done by literature study, field study, observation and questionnaires distribution. The data came from questionnaires...

The Logging While Drilling (LWD) calibration is one of the fundamental controls to ensure reliable formation evaluation data in an oil and gas drilling. There are many different calibration types in logging tools, one of them is density-neutron calibration. A study case conducted in one oilfield service...

The application of steel slag in pavement subgrade can not only improve the comprehensive utilization of steel slag, but also help to reduce the consumption of natural sand and gravel materials. In order to analyze the influence of steel slag fine aggregate on the road performance of cement-stabilized...

In order to study cube compressive strength of recycled lightweight aggregate concrete, with the change parameters of replacement rate of recycled lightweight coarse aggregate, 15 standard cube test blocks were designed and produced to carry out compressive strength test. The failure process and failure...

Three recycled concrete beams with the different gradation of coarse aggregates under concentrated load are presented. By using fractal theory, the distribution of the surface crack growth of the recycled concrete beams is analyzed. The results indicate that the surface crack of three recycled concrete...

Site investigation and monitoring on public buildings in Nanjing, analyses on the status and existing problems. Put forward the objective and principle of green transformation, raised the appropriate greening technology reform and seismic strengthening technology. The energy consumption of buildings’...

Gongan Changjiang combined highway and railway bridge is a steel truss beam cable-stayed bridge, which main span is 518m, In this paper, the behavior of the bridge under wind is systematically studied by analysis or by wind-tunnel model test. The wind characters at bridge location are analyzed. The vibration...

Laser cladding is mainly applied in components renovation, coating, stacking forming, etc. At present, the degree of automation of laser cladding is not very high. Machine vision technology is gradually becoming a good approach to improve the automaticity. Utilizing machine vision to measure and control...

The paper presents a color interpolation method for Bayer filter array images based on direction flag. The proposed algorithm determines four edge patterns defined through direction flag by four nearest green values surrounding the green interpolation location. Firstly, Bayer differences between multichannel...

Geospatial information with the feature of multi-source, multi-space-time, multi-semantics, multi-scale and diversity of data formats, makes geospatial information sharing a complex issue, For this reason, to resolve spatial information sharing is the key to spatial information applications and services....

Based on the operation of a Ground Source Heat Pump (GSHP) in Hefei, the heat exchange of the 100m depth vertical u-shaped pipe buried in the ground was analyzed, and the heat transfer performance, efficiency of the system and temperature variation of the ground were studied experimentally under the...

Visual Development Technology has been more and more attractive in the field of Modeling and Simulation with its intuitive features. As the scale of Parallel Discrete Event Simulation (PDES) enlarges, Researchers are becoming focused on how to integrate existing simulation entity models into PDES Application...

The control valve is widely used in the steam turbine, rely mainly on the motion of the valve stem changes the relative position of other t-rims, to achieve the purpose of regulating the steam quantity. Currently the control valve in service often occur the fault as a result of the valve is difficult...

The diffraction properties of transient holographic gratings recorded by two 532 nm laser beams were investigated in nematic liquid crystals doped with Disperse Red 1. A nearly 30-fold enhancement of the first-order diffraction efficiency as a function of heating time was obtained when the sample temperature...

Objective: To study the effects of pine bark procyanidins extract on blood glucose, blood lipid and antioxidation in diabetic mice. Methods: Diabetic mice model was made by intraperitoneal injection of Streptozotocin (STZ). Diabetic mouse were randomly divided into model group, Metformin group (250mg/kg),...

The ultrasonic waveform significantly impacts the atomization rate of Dynamic Mesh Atomizers (DMA) by influencing the energy delivery and droplet formation process. The energy transmitted to the liquid can be optimized by adjusting the amplitude, frequency, and shape of the ultrasonic waveform, leading...

Customer loyalty is an important factor in the current rise of Islamic microfinance. This study estimates the loyalty factors through the direct role of perceptions and expectations on trust. This study intends to determine the effect of members’ perceptions, expectations, and beliefs on the decision...

From the aspects of signal conditioning module and data acquisition module, this paper discusses the hardware schematic design of online monitoring and positioning systems for partial discharge of cross-linked polyethylene cables. The correctness and effectiveness of the method disclosed in the paper...

This paper discussed the development process of designated driving application on Android platform, using Android SDK, Eclipse IDE to build and Ali cloud sever for back-stage management, and explained the key technologies of the building of android platform and Ali cloud sever in a further step. By the...

According to the principals of Balanced Scorecard (BSC), we designed the performance evaluation system from five dimensions and evaluated the performance of small and micro businesses microfinance of 8 branches of HARBIN BANK by using Principal Components Analysis (PCA). The effectiveness and practicability...

The human body is a spring-mass-damper system that oscillates up and down while moving. Wearable robots can add energy to the person at an appropriate time to enhance human moving performance and reduce the metabolic cost of performing cyclic tasks simultaneously. We have developed a phase oscillator...

This paper takes (2, 1, 5) convolutional codes as example, disscusses the decoding algorithm for (n, 1, m) convolutional codes according to the principle of the reversibility of the modulo 2 operation.We designed the decoder and the syndrome of the (2, 1, 5) convolutional codesbased on its encoder firstly;...

During the technology process of 3DP fabrication bone scaffolds, the property of binder is a key factor which affects the quality of bone scaffold. In this research, three models of polymer binders were constructed and simulated by a molecular dynamics simulation method. Some properties (such as density,...

The absence of highly tensile residual stress which distributed in laser welded joint is primary factor of decreasing fatigue life. Laser Shock Peening (LSP) experiments were conducted on TC4 laser welded joints of 2.5mm thickness, using circular laser spot with pulse duration of 10ns, laser power density...

AZ31B Magnesium alloy bars were prepared by solid-state recycling with different extruding ratio of 4:1, 11:1, 25:1, 44:1. Shear tests were conducted through designing and preparing shear specimens and fixture. The bonding between chips in recycled magnesium alloy by solid-state process was successfully...

Modern agriculture in Western Siberia requires a scientifically justified approach to selection of soil treatment method. Switching to new soil treatment methods without considerations for soil and climate features of the region leads to unpredicted results and reduced crop yields. The research objective...

The designing and creating rail vehicles with increased power and performance, in the design decisions of which the vibroactive working parts are widely used, are inevitably accompanied by an increase in vibroacoustic characteristics. It leads to the deterioration of the working conditions for locomotive...

In the case of the inclined breakwater covered, the wave force acting on the parapet is reduced. China's "Breakwater Design and Construction Norms", there is stipulation on the calculation of the parapet, when the parapet before the cover and cover the width and height of 2 rows of 2 layers of dolosse...

Biologically-inspired design, or biomimicry, harnesses natural principles to foster innovation and address engineering challenges. The foundation of this research lies in the observation that nature, through billions of years of evolution, has optimized processes and structures that engineers are only...

Aramid and carbon Fiber-reinforced polymer (FRP) has been widely used in automotive and aerospace industries, due to high-strength and low-density. The development of FRP composite material is needed to achieve higher mechanical properties of FRP in aerospace fabrication, especially for the performance...

The Goodgrant Foundation is devoted to the educational performance of undergraduates attending colleges. A series of realistic, sensible, and useful mathematical model are established to determine the optimal investment strategy of the Goodgrant Foundation. In order to determine the candidate list of...

In order to determine the processing capacity of the airflow and the air conditioning capacity of the position engineering, the heat transfer process of the air and the wall in the project is analyzed. The actual arch engineering is simplified into equal volume square and spherical engineering respectively....

For the problems of the unfairness of the human-computer interface in the process of traditional aircraft virtual assembly, the simulation results are not intuitive and the operator cannot directly observe the changes and adjustment of the parameters during the operation of the control system and so...

Aiming at the problem that signal snapshot data of the target is sparse and conventional algorithm is difficult to obtain the signal subspace ,a new DOA decorrelation algorithm based on improved covariance matrix is proposed. Firstly, the received single snapshot data is pretreated by cross-correlation...

High power transient electric field is coupled into the interior of the electronic system easily. How to detect the field signal and reduce the influence of the field has become one of the most important fundamentality research projects. However, single sensor cannot detect the wide bandwidth signal...

Combining with strengthening engineering of a practical reinforced concrete plate bridge serving for 30 years, the superimposed experiments of four old bridge plates were studied with full size of 4960mm*950mm*220mm. The characteristics of composite members under secondary load stage were analyzed, such...

The Reynolds number of flow field around circular cylinders is usually high under strong wind for most full-scale tall buildings, which is difficult to achieve in most wind tunnel tests. To explore the wind characteristics of tall cylindrical buildings with vertical-equidirectional grooves from subcritical...

When the quadruped robot run high-speed movement, Frequent or large impact force from the ground on the robot system cause significant damage to stability and reliability of the hydraulic system and robot itself. Through decomposition the high-speed running process, the touchdown, slippage, and stationary...

The road performance prediction models of AC-25 asphalt mixture are established through a large number of road performance test,the road performance of AC-25 asphalt mixture is predicted in the design calculation process.The gradation test prediction models are established to identify the skeleton structure...

In this paper, The DC-DC Converter (DCC) has gained popularity with an increase of utilization of renewable energy sources over conventional energy sources. It is easy to operate Hard Switching DC–DC Converter (HSDCC) with rising power losses and deteriorating efficiency than with Soft Switching DC-to-DC...

Farmhouses in the cold regions of China are affected by climatic conditions, energy conditions, the building's own characteristics and farmers' living habits, and many kinds of pollutants accumulate and diffuse in the farmhouses, resulting in poor indoor air quality. Through a combination of...

Rotating cylinder is a major categories of guidance ammunition now. In order to detect the performance of its guidance components, the hardware-in-the-loop simulation test is necessary. Firstly, a platform whose core is a three-axis turntable is established for the test. Then, two experiments are conducted...

We study on the generation of efficient terahertz (THz) wave. This scheme applying cavity phase matching (CPM) optical parametric oscillator (OPO) with a GaAs crystal sheet by CO2 laser is proposed. The THz wave is emitted the nonlinear crystal. We calculated the optimized cavity length in a GaAs crystal...

According to the demand characteristics of urban common distribution pattern development, combined with China's current logistics management system and the development environment, this paper puts forward a new objectives, selection of the policy tools and policy to government in promoting the rapid...

For underground earthen sites in humid environment, its preservation is more difficult than the ones in northwest arid region. One reason is that the changing of existing environment, especially the changing of the groundwater resulting in the local cracks and creep-sliding disease of the underground...

Among methods used for transdermal penetration enhancement of drugs, the application of transdermal penetration enhancers is a method that has been most studied currently to promote the transdermal absorption of drugs, and also the most convenient method. Transdermal penetration enhancers (penetration...

The bridge bearing stress and deformation can eflect the safety of the bridge structure significantly. For bridge bearing status monitoring, identification and early warning technology, in recent years, is an important research direction for structural health monitoring. This paper is based on a model...

The EEG signal is an important tool for the diagnosis and prediction of epilepsy due to EEG containing a large number of physiological and pathological information. Based on alpha rhythm multi-channel EEG (electroencephalogram), this paper applied inner composition alignment (IOTA) algorithm to construct...

The influence of spray casting technique on martensitic transformation temperature, magnetic properties and compressive properties of Ni50Mn25+xGa25–x (x = 0, 1.25, 2.5, 3.75 and 5) alloys was investigated. With the increase in Mn content, martensitic transformation temperature of the spray casting samples...

Visual function in humans degrades during the early stage of senescence beginning from middle 50s to 60s. Generally,it may derive from the general decline of cortex inhibition,which destroys the balance between excitation and inhibition system in the brain.To date, the optimal fitting model of receptive...

To evaluate soil fertility of karst land undergoing rocky desertification (RD), the changing trend of soil microbial biomass properties over the succession of RD were studied by investigating the stands and analyzing the soil samples with four different RD grades in the northwestern Hunan province, China....

In this paper, the combustion features of dimethyl ether (DME) and liquefied natural gas (LNG) have been investigated by theoretical analysis. For the fuel consumption, the heat loss of the waste gas and the NO emission, we find that these indexes of LNG are higher than that of DME. However, the thermal...

Based on the investigation data on Pb in waters in 1984, were analyzed the horizontal distribution, seasonal variation and settling process of Pb in water in the bay mouth of Jiaozhou Bay, eastern China. Results showed that the seasonal variations of Pb contents in surface waters and bottom waters were...

The accurate and practical wind speed model of wind farm is the basis of the relevant research work of wind power prediction. This paper based on the wind farm and the real-time data of wind turbine, put forward a kind of dynamic distribution model of wind speed that consider the wind turbine wake and...

This paper introduces the composition, working principle, hardware and software design of the control device of the economical mine hoist rope winch.The device is controlled by the main control box.For the core, real-time detection of speed signal and winch running information, and can be real-time display...

A movable test system for thermal performance of domestic solar water heating system is proposed to solve the problem that fixed test system has low utilization efficiency of climatic resources. The test system consists of a bus body, closed pipeline system, measurement and control system for temperature...

Adopting Chinese cultural perspectives, especially the symbol of Yin/Yang, we study the issue of environmental protection in a developing country such as China. First, we compare the implications of this symbol with those of a more well-known Chinese perspective, i.e., Confucianism, both of which should...

To reduce the wear of thrust washer within straight planetary gear set, hydrodynamic lubrication design was studied by way of machining grooves in the radial direction into sides of thrust washer. Such grooves can result in a hydrodynamic pressure to separate the contact surfaces and reduce the wear...

This system, centered on the YOLOv8 algorithm and designed for UAV platforms, enables efficient identification and positioning of small-sized, long-distance targets in high-altitude environments, with broad applicability in military reconnaissance, civilian inspections, disaster relief, and other scenarios....

Through the establishment the parameters optimization model of milling machine, the optimal solution of the cutting parameters for complex surface is obtained by using some optimization algorithms for parameter optimization. Based on analyzing the main factors influencing on the milling process, the...

When interfered by lateral acceleration or uneven road surface, a vehicle is prone to rollover. In this paper, the active anti-roll bar (hereinafter AARB) is self-designed and a six-degree-of-freedom vehicle dynamic model is established for rollover prevention and ride comfort improvement. In order to...

As a kind of design technique, industrial moulding design has been applying in all kinds of production design, especial the new products. Taking the ZDY Directional Drilling Rigs as a example, the paper gives a detailed description of application and research of industrial moulding design in developing...

Based on the improved electrical betweenness and voltage stability theory, considering the importance of the structure of the grid and the current operational state of the power system, a comprehensive vulnerability assessment model and index based on the method of AHP-grey relation degree is introduced....

Waste derived ceramics were prepared successfully using a constant amount (50 wt.%) of steel slag and a different amount of glass by conventional sintering process. The influence of glass content on sintering temperature was researched. The phase and microstructure of the final ceramics were observed...

The paper overviews directions for electrotechnology treatment of grain seeds before sowing. The hypothesis of the germination enhancement of seeds if treated with corona discharge is presented here. Besides, the description of electrotechnology installation and facilities for it, including manufacturing...

With the rapid development of various kinds of radio access technology, the trend of future network will be the heterogeneous wireless networks environment, where all kinds of networks coexist for their complementary characteristics. On the other hand, the rise of smart terminal and software defined...

The assessment of environmental performance was carried out to identify the environmental impact of three typical solid wood based furniture: A beech wood desk (P1), A white oak-and-fabric sofa (P2), A rubber wood wardrobe (P3). A field research of company's manufacturing plant was conducted in order...

The existing research based on the paradigm of Environmental Adaptation Theory leads to an explanation of entrepreneurial mental process from a extrinsic, historical and static view. They also cannot explain why entrepreneur choose to open a new company themselves instead of selling entrepreneurial opportunities...