Advances in Engineering Research

Modular multi-level converter has become one of the most prospective converter technologies in HVDC transmission. According to the topological structure and mathematical model of MMC, this paper proposes a multi-point DC voltage control strategy based on voltage margin control, and designs the corresponding...

In order to improve the file transfer speed between two smart mobile terminals, the point-to-point (P2P) file transfer system based on near field communication (NFC) is specifically designed and implemented. Using simple NFC data exchange format (NDFT) protocol, the message exchanging is implemented...

As for complex grayscale image, a kind of adaptive boundary tracking method for multi-objective is proposed in this paper. First of all, the grayscale image with noise is processed by Gaussian filter. Secondly, the image gradient after filtering is calculated. According to the geometric characteristics...

In this paper, the vector equilibrium problem in topological vecror spaces is discussed. By using the well-known Ky Fan section theorem, its existence theorems of solution are proved and the main results of reference [3][4] are generalized.

As an important component of the smart grid, smart substations adopt the optical fiber as the main feature to replace the traditional cable communication network. Therefore, it is very important to research the key equipment switch technology of the smart substation network. This article first compares...

The paper considers unique natural objects within the mountain territory of the Chechen Republic (hydrological, paleontological, biological, etc.). It provides information on natural objects qualified as nature sanctuaries, as well as describes unique natural objects (including, paleontological and stratigraphic)...

The power quality concerns are augmenting day by day due to the growth of loading requirements. In this paper, we address these concerns while trying to provide the solutions. With the advancement of technology, the power quality concerns can be handled efficiently by flexible alternating current transmission...

The rapid development of backfill mining technologies were reviewed in Chinese coal mines from the 2002 to 2012 in Chinese coal mines. Some field engineering applications were introduced, the main data was collected from 27 typical backfill mining working face, including geology survey, mining setting,...

In the practical application of the ground coupled heat pump project, when the heat extracted from the soil does not match the heat released to the soil, it will cause the load imbalance and the change of soil temperature, which will lead to the gradual decrease of the operating efficiency of the heat...

Activated carbon coated silica sand (AC@sand) synthesized by hydrothermal carbonization and KOH activation was used to adsorb chromium from aqueous solution. The factors which influence the removal of Cr(VI) onto the AC@sand including the pH, initial concentration, contact time and temperature was studied....

In practical use, closed loop operation on distribution lines may generate large steady current and impact current. For multiple distribution lines, closed loop operations in turn with low load transfer efficiency are easy to lead black-out in large area. In order to increase efficiency without reducing...

This paper presents a multi-pulse laser radar system and target detection algorithm for motion target detection. In this paper, the system of multi pulse lidar is introduced firstly, and the detection performance of the target range is analyzed by combining the lidar equation. Then, aiming at the detection...

Grind-hardening is an integrated manufacturing technology of surface-quenching and grinding process. The residual stress is one of the main characteristic parameters of grinding-hardened surface quality. On the basis of the grinding-hardening test, influences of the grinding speed, the grinding depth...

Recommender systems have proved more significant area of research and outstanding to the technology progress in mobile devices like smartphone and tables. Mobile technology is grown quickly due to social networking. The concept of a recommender system to provide item feedback to the user in which it...

The study aims to determine the effect of the water level in brake fluid on the rate of increase in brake fluid temperature and the boiling point of brake fluid. The study used an experimental method to determine the performance of 5 brands of brake fluid. The brands of brake fluid used are Jumbo, Fuso,...

Relationship testing between market orientation and business performance has been widely conducted. The biggest issue is about model development, while the issue related to managerial applications is still very lacking in information, especially for SMEs. This research aims to (1) formulate a market...

The impact of erosion globally shows huge losses in food production. Economic damage due to erosion is related to the total rainfall that falls in an area. High rainfall due to extraordinary climate change will have an effect on soil erosion. Specific planning in various regions will restrain erosion...

An innovative bromination leaching system for gold leaching technology research. The conventional liquid bromine+sodium bromide leaching system has an acidic pH value and high leaching temperature requirements. At the same time, liquid bromine is highly toxic, volatile, and has strong irritation and...

The purpose of the Jatinegara Dam is to irrigate agricultural land in the villages of Cacaban dan Rambut. The Jatinegara Dam uses tunnel construction as its diversion tunnel. The objective of this research is to provide recommendations for the tunnel excavation method and support system, as well as to...

The Electronic Control Unit (ECU) is the system computerized embedded in modern vehicles. The presence of an electronic system in the vehicle provides limitations for in-depth system analysis of the Electronic Control Unit (ECU). The reason for the limitations of testing tools for computerized vehicle...

This paper reviews the recent progress in the development of lithium-ion battery technologies, which emphasizes the operation mechanism and achievements in battery materials. The battery works based on the movement of lithium ions between the anode and cathode in the electrolyte isolated by the separator....

Road traffic crashes remain a significant global issue, disproportionately affecting developing countries. Among these, intersection-related crashes, particularly unsignalized intersections, experience higher crash risks than their signalized counterparts. This study investigates the influence of collision...

The finite element model of the round-ended concrete-filled steel tube compression-bending shear member was established by ABAQUS finite element software, and the accuracy of the model was verified. The working mechanism of the round-end concrete-filled steel tube compression-bending shear member was...

Everyone has a different accent, the environment and culture can influence the difference in accents. Utilization of the recognition of the speaker’s accent can be used as a method to detect the speaker’s country of origin. Accent recognition belongs to the field of Automatic Speech Recognition (ASR),...

The quality of the minority personnel training is closely related to the teaching ability of college teachers. This paper firstly analyzes the restricting factors of university teachers' teaching ability. On this basis, the paper puts forward four strategies to improve the teaching ability of university...

Breeding contaminant is one of the important pollution sources of the rural ecological environment. It is an effective way to control environmental pollution that the solid waste and wastewater generated in captive breeding is used as resource. Propose a circulation agriculture model with "planting-breeding-biogas-fertilizer"...

Based on the analysis of the formation of the residual oil in the area , combined with the fine geological and multidisciplinary research results, summed up the main types of remaining oil, combined with dynamic and static data, used some measures such as cyclic flooding, fracturing, profile control...

Taking the distribution cable as the research object, based on the circuit theory, the equivalent circuit parameters of the cable are calculated. On the basis of this, the harmonic impedance model of distribution cable is established, The amplification mechanism of the leakage capacitance of the cable...

With the development of electric power alternative, the incremental flexible load in power grid plays a more important role. This paper from the perspective of sociology, consider the profit of the accommodation of new energy increment power generation and load adjustment,and the cost of the generator...

It is important whether the theoretical control parameters of the gasoline engine, such as ignition advance angle, the fuel injection advance angle, the closing time, the injection pulse width and so on, are in accord with the actual control parameters, because they relate to the role on a new product...

Combined with the traditional Empirical Mode Decomposition(EMD),Ensemble Empirical Mode Decomposition(EEMD) and Complementary Ensemble Empirical Mode Decomposition(CEEMD) method, in view of the modal confusing problems, proposed an improved algorithm based on EEMD, and expounds the calculation and realization...

Rapid urbanization brings a quick growth of urban environmental pressure. Food consumption is taken as one of the most resource demanding and polluting daily activities in urban life, and is also the important part of urban environmental impact. We calculated the environmental impact of urban food consumption...

In order to explore the main influencing factor of safety management of construction project proposed a based on clustering algorithm of safety management factors analysis method, and the main factors of influencing the construction safety management through the practical investigation. By a factor of...

Soil water and nutrients are key factors for plant growth and development as they are involved in many processes in plants. The purpose of this study was to investigate the effect of water deficit in different growth stages on maize growth and water use efficiency. Randomized block design with three...

Power electronic Converter is an electrical components connecting AC / DC networks. It is important to study the AC / DC sides harmonic characteristics. Based on the improved switching function which is processed with multiple states, the paper gets the modulation waveform, which is modulated by the...

In order to explore practical and efficient method of improvement to alkali-saline land in Binhai area of Tianjin. Four kinds of improvement method were used with plants of Pyrus Betulaefolia which grew on the heavy alkali-saline land and combining biological and physical ways in Tianjin.The different...

Based on the research of the standard twist drill geometry parameters, the cutting part of the structure of the geometric parameters are expressed as a fuction of radius, the chisel edge and the main cutting edge geometric parameters of the mathematical model are established. Drilling force is one of...

In this study, a series of aromatic aldehyde schiff base compounds were synthesized respectively by 4,4’-diaminobiphenyl and three different aromatic aldehydes. The structures of these compounds were confirmed by FT-IR, and 1H NMR. The optical properties, which were characterized by UV-Vis and photoluminescence...

The transparent electrodes were fabricated via graphene and silver nanowire hybrid films using vacuum filtration method. The influence of raw material concentration on the structure, morphology and the properties of the thin films were studied. With the content of silver nanowires and graphene increase,...

Wooden structures pollute the environment considerably less than the structures made of bricks, glass or concrete. Walls that use composite gypsum and cardboard-based materials and gypsum and cellulosic fibers-based materials for the interior surface of the walls have been selected for the evaluation...

A kind of integral type sliding mode control law was designed for a kind of simplified pitch channel model of hypersonic aircraft which is widely discussed recently. The advantage of sliding mode control is that it has strong robustness. And the integral sliding mode control method can reduce steady...

The development of active power distribution network control and automation system presents the trend of distributed control. The basic work of the system mainly depends on the information collection, transmission and control function of distributed Intelligent Electronic Device(IED). Protection, control...

The two courses of "Signals and systems" and "Digital signal processing" play a very important role in the Electronic Information Institute, they are compulsory subjects, and the credits are very high, but there are many problems in the teaching process of "Signal and system" and "Digital signal processing"....

The characteristic of load voltage and zero line voltage is studied when the zero line disconnection occurs in three-phase distribution system. The theoretical analysis show that: zero-sequence voltage is appeared at the neutral point when the zero line disconnection occurs, and the size of zero-sequence...

The concentrations of NH4+-N, NO2--N and NO3--N were measured in batch experiments to study nitrification kinetics in IFAS system with different FR at 0%-50%. The results showed that both of NH4+-N oxidation rate ( ) and NO3--N production rate ( ) increased with FR, which respectively increased from...

The cinnamon essential oil micro-capsules was prepared by β-Cyclodextrin (β-CD) embedding technology, the commercially available fruit wax was used as substrate and cinnamon oil micro-capsule was added as antibacterial agent. The concentration of fruit wax, micro-capsules addition, dissolution temperature,...

BIM technology is a kind of simulation imaging technology, which has the characteristics of strong visibility, good coordination, and powerful graphics. Especially in the construction industry, this technology can make the construction of the project more efficient and has rapid results. When BIM technology...

As the real-time systems and embedded systems are developing, behaviors of systems has become hybrid with the fusion of discrete and continuous components. Traditional labeled transition system could only describe discrete systems. In this paper, we proposed a new type of labeled transition system which...

Ionic liquids (ILs) were used to modify macroporous resins (MARs) to purify chlorogenic acid (CGA) with Flos Lonicera Japonicae (FLJ) extract as raw material. By comparing the static adsorption and desorption effects of four MARS, the NKA-2 resin was determined as the best purification material. The...

The factors influencing the dynamic flow characteristics of injectors are discussed, and a set of experimental system for measuring dynamic flow is designed and developed. Taking a certain fuel injector produced by Wenzhou manufacturer as the research object, the circulating fuel injection quantity of...

Association rules mining is a technique in data mining to discovering a meaningful pattern of data. The main objective of this research is to identify undergraduate students data and to get the profile and insight from the past data. It will have a benefit for improvement in academic activity in the...

Indonesian Phonology and Psycholinguistics generally only touch the theories about the sound production that leads to an insufficient process of speech therapy learning.Educators are responsible for providing and developing an accessible, efficient and effective teaching instruments and materials for...

Internet of things is a new generation of information technology and an important part of the information industry. It is another leap-forward development. The most direct application of Internet of Things is wireless sensor network. The communication of the wireless sensor network needs the support...

In order to solve the problems of the classical system reliability assessment method in dealing with complex system with small samples, such as multilevel approximation, insufficiency and singleness of information, take the success or failure products as an example, the theory of multi-source reliability...

In order to solve the problems of a improved algorithm adaptive of NURBS curve,Such as interpolation time bigger, calculation more complicated, and NURBS curve step error are not easy changed and so on. This paper proposed a study on the algorithm for improved algorithm adaptive of NURBS curve and simulation...

Social network is the most important way of information exchange and communication at present, which is a key step to study users' behavior in social network. Current methods for users 'behavior classification are more diverse, but it is difficult to assess the impact of specific events in different...

In this paper, we proposed a fast compressive tracking algorithm based on adaptively learning scheme (FCTAL). First, we designed a special nonlinear model for updating the learning parameter of na‹ve Bayes classifier. Second, we improved the target position decision strategy from FCT for getting it refrain...

Texture synthesis skill is widely used in fields of Computer Graphics, Computer Vision, Image Processing and so on. It can efficiently avoid noticeable seams between texture patches and minimize the stretch and distortion of the pattern when tiling a texture on surfaces.This paper focuses on two problems...

It is introduced that the operator uses radio frequency technology to communicate with gantry cranes gather relevant data and control their work. Frequency communication system consists of two parts: one part is mounted on the crane to collect working and the environmental data of crane; another part...

Buton asphalt is a natural resource owned by Indonesia. One of the Buton asphalt processed is Retona Blend 55 Asphalt. Due to the abundant stock and better quality, Retona Blend 55 Asphalt can substitute Pertamina asphalt. Besides buton asphalt, Indonesia also owns coal mostly used for steam power plants....

This study aims to determine the perceptions of visitors and the village community of Pagarjaya towards its marine ecotourism and to find out the suitable strategy for the sustainable management of marine ecotourism. The research was conducted in the village of Pagarjaya, Punduh Pedada, Pesawaran District,...

To address emerging imbalances in rural road maintenance, this study centers on evaluating pavement maintenance quality of rural roads. Utilizing the sound and moderate road rate (SMRR), which is derived from the Pavement Maintenance Quality Index (PQI), this study assesses pavement maintenance quality....

The research on reinforcement technology of Anhui style ancient buildings has developed rapidly. Through a series of interviews and practices, this paper is based on the theories of civil engineering and engineering cost, combined with nondestructive testing technology Bim digital modeling technology...

One of the environmental problems that is often in the spotlight today is the problem of waste. This waste problem also occurs in the port and ship environment which of course has an impact on disruption in the aspects of the environmental ecosystem, health and economy, especially the maritime environmental...

The separation of carbon dioxide (CO2) from the atmosphere using direct air capture (DAC) technology is a key step toward sustainable methanol production. The minimum theoretical work (MTW) required for CO2 separation is set by thermodynamics, however the actual energy consumption is significantly higher...

The development of digital technology is an opportunity for business owners to market their products using social media or digital marketing. Digital marketing is a promotional activity and reaches a broader market to develop businesses. The FOS Food Mojokerto restaurant also employs the use of social...

Composite material is fourth largest aviation materials after the aluminum, steel, titanium and has been widely used in aviation. Defects and damages is inevitable in the process of its production and manufacturing, that seriously hazards the aviation security. Tap testing is the simplest and the most...

CNC internal meshing power honing processing technology is b Figure 1ased on the traditional honing techniques developed on a high-quality hardened gear finishing method. It addition to the traditional advantages of internal honing outside, not only shorten the gear finishing process, improve production...

In recent years, plastic film mulching in our country has been widely applied to agriculture and well promote the development of agricultural industry. However, the residual pollution of plastic film mulching affects the better development of agriculture, because when the age limit of plastic film mulching...

Although fused silica has better temperature characteristics than most materials, temperature drift is still one of the main error sources of a Cylindrical Vibratory Gyroscope (CVG) with a monolithic fused silica resonator. The change of temperature changes the characteristics of the material, at the...

Aiming at the limitation of the regression prediction method for mine gas emission, a chaotic time series prediction method for reconstruction of generalized phase space is proposed in this paper. This method is used to construct phase spaces for time series with unobvious chaotic characteristics and...

In this paper, it is established the model of air-conditioning system and a simplified model of cooling system in the vehicle. That model is based on the test data. One-dimensional model has been corrected by the three-dimensional calculation results. Therefore, the one-dimensional model also reflects...

Thermal spray technology is one of the key supporting technologies of remanufacturing engineering, and it is an important technical means to realize the rapid recovery of the surface dimensions of the damaged parts, to improve the performance and prolong the service life. In this paper, the main shaft...

Tube-contained raw material pipeline hydraulic transportation is a new energy-saving and environmentally -friendly technique of piped hydraulic transportation. In the paper, some pressure characteristics of tube-contained raw material pipeline hydraulic transportation under different discharges were...

The results demonstrate that the effect of elasticity in plastic zone on elastic-plastic fields is remarkable in many cases, while elastic volume deformation in plastic zone generally has been omitted in the solution procedures of the classical plastic theory due to the mathematic problems. The analytical...

For the actual situation that it is generally lack of classified protection experiments in the experimental teaching of colleges and universities, analyzing the relevance between each knowledge points and basic knowledge in classified protection, and proposed an experiment construction of classified...

There are many factors that influence part-filling pillars’ stability. In deep mining, the main factors are filling rate and the pillar’s internal friction angle that can influence the pillar’s plasticity area greatly in the process of filling pillar’s deformation and destroyment. This paper takes filling...

The Pinglidian gold mine locates at the Laizhou city, Shandong province, China. Up to 2013, the orebodies had been mined out, however, there is leaving mined voids of about 120,000 m2 and also leaving a large number of ore pillars. The residual pillars have to be recovered. In order to safely recover...

The supported heteropoly acid catalysts were prepared by loading Phosphotungstic acid on the MCM-41 molecular sieve via the impregnation method, which were characterized by FT-IR, N2 adsorption-desorption and applied in the synthesis of butyl lactate. The results show that heteropoly acids supported...

This study investigated the role of bis(p-sulfonatophenyl)phenylphosphine (BSPP) in stabilizing gold nanoparticles in 0.5×TBE aqueous solution. Gold nanoparticles were made by the method of reduction of tetrachloroauric acid by sodium citrate, and then they were coated with BSPP. After centrifugation...

An improved clival gate 4H-SiC MESFET with recessed drain drift region and recessed p-buffer layer (RDRP-CG MESFET) was proposed in this paper. The key improvement in this paper is the enhancement of the drain current and the breakdown voltage. The recessed drain drift region and recessed p-buffer layer...

In order to understand the deformation mechanism on the pipeline in steep longer distance seams mining, taking one coal mine as case study, where the gas pipeline from Shanshan to Urumqi, in China is laid across. FLAC3D was adopted to study the deformation mechanism on the pipeline. The simulations reveal...

This paper discusses results of analysis from geotechnical database collected during field mapping of shafts in weak/soft rocks of Abu Hamour tunnel project area of South Doha, Qatar. Shafts are connected to the main tunnel by short tunnels – adits, excavated using sequential excavation method. Shaft...

Now China is ushering in a "digital city" "Digital Communities" Construction and "low-carbon economy" boom, 3G technology and Internet application development for smart home also play a very important role, and intelligent home can the effective realization of "low-carbon economy," "green economy", smart...

This paper combines the mobility protection and construction practices on traditional dwellings in Zhongjie Street, Shenyang to explore the regeneration design methods of traditional architecture, trying to discuss the regeneration design from the perspective of the fusion of old and new architecture...

The community structure is one of the most universal and important attributes of complex network, and the community division research of complex network is to reasonably divide the community structure practically existed in the complex network. Apply the thought and theoretical method of supernetwork...

In order to solve the general exist problems of visual based tunnel disease inspection such as low level of automation and intelligence, using a high cost performance tunnel disease inspection device to have high precision automatic analysis and evaluation on the face of tunnel across time and space,...

Construction industry has been developing rapidly around the world. One of the problems in construction management is construction waste. It has major impact on cost, time and quality of construction management. The aim of the study was to examine the correlation model of construction waste cause to...

Renewable energy is a limited energy source that involves of sunshine, wind, and water. It’s normally used as sources of renewable power plants. Despite of its advantages, these power plants also contribute some disadvantages, such as high generation costs, highly dynamic behavior, etc. The disadvantages...

The usage of unified devices in the spacecrafts and aircrafts allows reducing the cost of their production, but at the same time leads to the problem of unified device characteristics harmonization with systems of a unit under design. In on-board aircraft thermocontrol systems, which ensure given temperature...

The material properties of living tissue are subjected to uncertainty according to several factors such as ageing, disease, nutrition ... For example; the bone is a composite structure containing organic and inorganic components. Inorganic components are essentially responsible for the compression strength...

The experiment was carried out for the determination of rutin content in Oriental arborvitae by high performance capillary electrophoresis method. The borax solution as buffer solution was chosen, and its concentration was 20 mmol/L at a constant voltage of 20kV and injecting time of 10s. The detection...

Saliency detection acts as an important role in many computer vision tasks. We propose a novel bottom-up, object-level saliency detection method based on global color and space contrast. The proposed method not only considers the global color contrast of the image but also takes the space information...

Shield machine is the large electrical equipment in the tunnel construction, the power quality is directly related to the construction safety and economic benefits of the project, aiming at the shield equipment on Power Grid Reactive Power impact situation, serious harmonic pollution, this paper designs...

The selection of an ideal living environment is a complex process that involves multiple attributes, which makes the decision of an appropriate living environment difficult. Hence, a suitable assessment model is needed to solve the complexity. The multiple attribute decision-making methods-Fuzzy Delphi...

Along with the rapid development and application of modern intelligent technology, people hope to use intelligent terminal to query related information of scenic spots before travelling, therefore, they hope intelligent technology and service can be provided in scenic spots, and accordingly, information...

Increasingly developing technology has opened up new opportunities in various aspects of life, including in military operations. The research focuses on developing to detect Yolo and Wifi signals using drones as a search and rescue tool for missing soldiers on the field of operations. The loss of a soldier...

3D printing technology based on the extrusion material method is rapid manufacturing and has complex accuracy, which supports industrial progress. The selection of printing material (filament) is essential in obtaining mechanical, chemical and thermal properties. In this study, the use of ABS and PLA...

The purpose of this study was to characterize AgNP, and determine antioxidant and antibacterial activities. This research is exploratory descriptive research. The characterization method used PSA (Particle Size Analysis) and FTIR (Fourier Transform Infrared Spectroscopy). The antioxidant activity method...

Innovative applications based on AIGC have injected new vitality into e-commerce supply chain management, which not only greatly improves operational efficiency. However, the application of AIGC technology in e-commerce supply chain management also faces challenges. with the continuous progress of the...