Advances in Engineering Research

Site amplification is important in ground motion prediction. It describes the effect of soil sites on ground motions. The quarter-wavelength approximation for computing site amplification has been developed for several decades. It is validated by the data from the main shock of 2011 Tohoku-oki Earthquake,...

The coal bed methane (CBM) content is often relatively high where the immediate roof and floor of the coal seam are mudstone. In order to predict the CBM rich region, position of coal seam roof and floor and distribution of sandstone and mudstone are based on acoustic wave impedance inversion and pseudo-acoustic...

In order to improve the charging efficiency of photovoltaic power generation, Photovoltaic controller adopts STM32F103 as the main chip, Hardware IGBT power (IKW40N120H3), Three-phase alternating BUCK/BOOST circuit in parallel, The variable step disturbance observation Maximum Power Point Tracking (MPPT),...

The high voltage power metering system is mainly composed of a current transformer (CT), voltage transformer (PT), consisting of two wire electric energy meter and connecting them. In the high-voltage power metering system, current transformer is important electrical equipment. Structure of current transformer...

the main purpose of this article is the review of abilities of autonomous robots group application for monitoring of oil platform condition. The article contains functions performed by the robots group; the composition of the robots group; robots’ system firmware and possible robots’ location on an oil...

Pigments of Forsythia flowers were facilely extracted. Ultraviolet-visible (UV-Vis) absorption spectra of nanocrystal TiO2 film sensitized by Forsythia dyes, and photoelectric property of natural dye-sensitized solar cells (DSSCs) confirmed that the strong capacity of Forsythia visible light absorption,...

The development of thermal insulation materials that can be used in modern wooden houses noticed a large shift. But there are also some negative aspects which affect long-term quality of the thermal insulation properties. Influences as poor implementation or improper design are a problem that can be...

In order to evaluate the condition of the high voltage circuit breaker (HVCB) operating mechanism, a method based on the coil current (CC) waveform of the operating mechanism has been studied in this paper. A finite element method (FEM) with high accuracy has been used to establish an electromagnetic...

Finger recognition is an important basis of natural human-computer interaction, but existing researches are mainly on bare-hand finger recognition. Due to the fact that people need to wear gloves because of cold weather, working environment, etc, this paper presents a method to recognize gloved fingers...

The use of non-linear and time-varying electronic devices, such as rectifiers and inverters, makes the current waveform of the grid seriously distorted. The harmonics generated by those devices have bad effects on the generation and transmission of electric energy. To deal with these problems, a novel...

Three kinds of thermoplastic polyimides (TPIs) were prepared by pyromellitic dianhydride (PMDA) and three different flexible diamines, respectively. The micromorphology, thermal properties and mechanical properties of prepared samples were tested and investigated. FTIR confirmed the successful preparation...

Vision saliency detection has been applied in image preprocessing steps. The purpose of this paper is to introduce the research direction of image saliency detection and introduce the performance evaluation criteria and datasets of the model. Then investigated a variety of methods, introduced various...

Measurement of natural radioactivity in soil samples collected from Aizawl district, Mizoram, was carried out using gamma spectrometer 5”X 4” NaI (Tl) detector. Soil samples were collected from 15 different sites located in various parts of Aizawl district. The activity concentrations were measured for...

In order to research on the transport of chloride ions in prestressed box girders under coupling action of salt fog and fatigue loading, the volumetric strain and porosity as the intermediate variables, coupled processes was established based on the fatigue damage criterion. And compared with the related...

The article presents an algorithm of forming dynamic table of routs for multimodal passenger transportations. The algorithm selects the optimum route using one of criteria: fare, travelling time, comfort level. It is shown that the proposed method can find routs with minimum number of transfers. The...

Flanging is quite actively used in the manufacturing of workpieces with necks. Its prevalence in production explains the fact that there is a huge number of Russian and foreign researches discussing this operation, which unfortunately do not take into account the influence of the mechanical properties...

A numerical model of flow and temperature field in an air-cooled refrigerator freezer was established by CFD method and was validated by experiments. The results show that the simulation temperature is slightly lower than the experimental results; the maximum relative error is 1.89%. The numerical results...

Using investigation on As in Jiaozhou Bay in April and July 1981, this paper researched the vertical distribution and seasonal variation of As contents, and defined the mechanisms. Results showed that As contents in surface and bottom waters were both in order of spring > summer. The sedimentation of...

The text detection of advertising images is of great significance in current economic life. The traditional method of text detection often omits words or wrongly detects the text. In this paper, the deep learning algorithm is introduced to detect the text in the online advertising images. Based on the...

This paper explored the thermal performance of evacuated tube solar collector with/without a semicircular compound parabolic concentrator (CPC). The configurations of tested systems were: (1) the system without CPC, (2) the system with Model A CPC (3) the system with Model B CPC. This work investigated...

The change of water condition directly influences the composition and succession of regional vegetation communities. In this study, the Xiliaohe Plain was selected to systematically analyze the succession of vegetation's ecological pattern under the change of water condition in semi-arid area. Based...

In this paper, we have considered a phytoplankton-zooplankton system with toxic liberation delay. Firstly, we give the critical values of transcritical bifurcation. Then, we derive the normal forms and their unfolding with original parameters in the system near the bifurcation point by the normal form...

This work’s purpose is to study the industrial composting of organic waste as an environment for the development of research and production cooperation. The problem of the organic waste processing of the agro-industrial complex and housing and public services is one of the key factors of environmental...

The planned housing has been phenomenally developed in some big cities in Indonesia, included Yogyakarta. The housing has been built in various models as government’s policy for getting equity in diversity and for reducing housing backlog in Indonesia. The housing policy that is relevant to the problem...

In developing economies planned obsolescence (PO), and electronic waste (E-waste) are live topics of environmental and public health discourse, and this study serves to explore whether sustainable engineering practices (SEP), full utilisation of the lifespan of products, and enhancement of circularity...

A supercapacitor is a device used to store energy through electrochemical processes. Supercapacitors are used in many applications, such as batteries for electric cars. The material used for the electrodes determines the performance of the supercapacitor. Activated carbon is one of the most commonly...

This paper focuses on the application of low-carbon technologies throughout the entire lifecycle of prefabricated buildings. By analyzing the carbon emission characteristics in the design, production, construction, operation, and demolition stages, it comprehensively explores the low-carbon technology...

Many researchers have studied the various properties of selfcompacting concrete (SCC) with the addition of several types of powders, utilizing both traditional and statistical (mathematical) methods. The novelty of our research is to use the response surface methodology (RSM) to develop a mathematical...

This study combined ANFIS with a bacterial foraging optimization algorithm (ANFIS-BFO) to predict the daily suspended sediment concentration based on the daily series data observed at the Rio Valenciano hydrological station near Puerto Rico, USA. Meanwhile, ANFIS with grid partition (ANFIS-GP), ANFIS...

Ground motion duration can significantly influence the dynamic response and cumulative damage of structures. To investigate the influence of ground motion duration on structures with pinch degradation behavior, this study used the seismic design spectra as the target spectra, and the spectra matching...

To improve the anti-crack performance of Al-Cu alloys, the geometries, relative stability as well as growth strategies of AlnCu (n=1-9) clusters were investigated with spin polarized density functional theory: BLYP. The results reveal that the Cu atom tends to convergence aluminum clusters to close-packed...

The choice of gas mediums will affect the reflected shock pressure and temperature during analyzing the shock tube. Different mediums in driver and driven section result in the Mach number disparity in the process of shock wave propagating, adversely affecting the reflected shock wave. Based on the ideal...

Android system is the most widely used smart phone operating system at present. As the Android system is a Linux based open source operating system, so anyone can operate it on the smart terminal, which brings seri-ous security problems. A security reinforcement scheme for mobile applications based on...

Using a chemical-ultrasonic process, a modified cellulose nanofibers aerogel, graphene oxide/cellulose nanofibers aerogel (GO/CNF) aerogel, was prepared, which was applied to adsorptive removal of sulfamerazine from water. The SEM, XRD and FTIR were used to characterize the GO/CNF. The as-prepared GO/CNF...

Corrosion can remain a huge obstacle to the rehabilitation project of Missan Oilfields in Iraq, which is detected with high corrosive H2S/CO2 contents. To minimize corrosion risks in the annulus, a packer fluid has been set between the tubing and the casing above the production interval, and to fill...

Complicated geological conditions and high level ground stress are often encountered with challenges in the construction of underground caverns. It is a key problem to ensure the stability of surrounding rock during construction and operation. The numerical method can be used to simulate and predict...

This paper design of a electronic code lock circuit under EPC system network. the system mainly including the minimum system SCM, password input matrix keyboard, password storage circuit, unlock circuit, LCD display circuit, buzzer alarm circuit and VD indicator circuit. The main program flow chart complete...

In this paper, tyred wheel dynamic response to road excitation during rolling has been simulated using finite element modelling in a graphical programming environment. The actual contact is an area not a single line and the contact edges are subject to continuous impacts during the rolling. The structural...

This paper presents the results of investigations recently done by our research group that improve the properties stability of GMI sensors by exploring the giant magneto-impedance (GMI) and the GMI-hysteresis of Co67Fe4.5Cu1Si12.5B15 amorphous thin strips, which was the most promising soft magnetic material...

With the rapid development of information technology, the popular online shopping came into being, which have lead to a huge number of online shopping packaging waste, and become an important source of environmental pollution in the world. In this paper, the present situation and main problems of online...

This paper investigates the wear mechanism of WC (tungsten carbide) drills in drilling titanium alloy (Ti-6Al-4V) with graphene oxide suspended cutting fluid and conventional coolant. By analysing cutting forces and examining the worn surface of the drills, wear progression in the cutting experiments...

This study investigated the use of nanoscale bilayers assembly for superhydrophilic and superhydrophobic surface modification on stainless steel plate. This study performed nanoscale bilayers assembly method ,as well as chemical vapor deposition (CVD) to perform fluorosilan treatment on the modification...

Graphite phase carbon nitride (g-C3N4) as a novel semiconductor photocatalysts attracted widespread attention in recent years. In this paper, the lamellar g-C3N4 nano-materials prepared from solid urea was used as a photocatalyst to degrade the simulated dye wastewater under visible light irradation....

With the rapid development of PV charging station with storage system, due to the inadequate utilization of solar energy in traditional off-gird charging stations and grid-connected charging stations, this paper present a novel connecting and off-grid PV charging station with storage system, which with...

With the popularity of the Internet of Things technology applications in various fields and the continuous improvement of technical level, the intelligence level of China's medical equipment industry is also growing. For example, the infusion monitoring system in the application of intravenous fluids....

Tin dioxide is one of the most promising anode materials for the next generation rechargeable Li-ion batteries owing to its high theoretical capacity (782 mAh g 1). The flower-like SnO2 clusters were successfully prepared via a facile one-step hydrothermal method using sodium stannate as a Sn source...

In this paper, we discussed the problem of two-dimensional (2D) direction of arrival (DOA) estimation for non-uniform L-shaped array, and for this, a low complexity multiple signal classification (MUSIC) algorithm is proposed. The proposed algorithm uses two one-dimensional searches to achieve the joint...

This paper synthetically analyzes and compares classical denoising methods, discussing their respective field of application, their denoising performance and influencing factors, etc. We summarize the advantages and disadvantages of these methods. Finally, vibration acceleration signal sampled on Diesel...

Hydrogen is very promising as engine fuel due to its excellent combustion and emission characteristics. In order to improve the emission of a spark-ignited gasoline engine car a set of hydrogen injection system was added to its gasoline engine and the engine can be fuelled with gasoline, hydrogen or...

The emissivity of different topographies of iridium films which were obtained using Ir(acac)3 (1.216×103 Pa) and hydrogen (5.575×104 Pa) in a cold-wall reactor at atmospheric pressure was studied. The bigger size the grains are, the uneven topography is obtained, the higher the emissivity is. The bigger...

It has been proved earlier, that boriding improves cobalt durabil-ity and that of the alloys under study during treating at room temperatures. The present paper describes the influence of diffu-sive boric coatings on the mechanical properties of cobalt alloys during treating at high temperatures, as...

In mining minerals by open-cast method, the environment is exposed to a powerful man-made impact, a significant part of which is associated with mass explosions during rock crushing. In preparation of rocks for excavation by blasting, a significant amount of dust and gases is emitted into the atmosphere;...

To achieve the green backfill of an abandoned open pit mine with a large difference chute process system, Fushun West open pit mine is used as the research subject. Based on the theory of gas-solid two-phase flow and the characteristics of large difference chutes, FLUENT numerical simulation software...

The traditional collaborative filtering algorithm has no overall quantitative understanding on users' preference. This paper proposes a collaborative filtering algorithm based on improved recommendation sorting. Based on the traditional collaborative filtering rating prediction, three kinds of weighted...

The development of underwater wireless sensor networks (UWSN) is attracting more and more attentions. The MAC layer protocols which are the important part of the network, dominate the method of each node sharing the channel, thus affect the performance of throughput, latency, energy consumption and other...

This research aim designs and tests a vertical scroll pump. The mathematical models of the curves fixed and the orbiting scrolls were used in designing and constructing a vertical scroll pump and the principles of dynamic of machinery was applied to analysis the centrifugal force of a vertical scroll...

This study aims to identify the potential of Tomini Bay resources that can be utilized as a source of chemistry learning. This is a qualitative research using primary data and secondary data. Data collection were conducted through the combination of field research and literature studies. All data were...

The crystallization of struvite (MgNH4PO4.6H2O) is known as an effective way for recovering nutrients from landfill leachate (LL). Recently, several studies have been done to examine nonconventional sources of phosphorus, in order to improve the applicability of struvite technology. This study aimed...

The aim of this study was 1) to develop learning media based on android using crossword puzzles to improve vocabulary skills, 2) determine the feasibility of learning media based on android using English crossword puzzles from material experts, media experts, and English learning, 3) Knowing the response...

Soursop leaves have a myriad of uses, including boosting the immune system, helping fight cancer cells. The leaf, which has the scientific name Annona Muricata, has become the target of residents who choose alternative paths in natural medicine. Soursop leaves grow abundantly across Indonesia, from lowlands...

Tremendous interest in sugary confectioneries is rapidly expanding, and adding healthier ingredients to gummy jellies enhances the health attributes of a typically nutritionally deficient product. However, consuming these products can pose various health risks. The aim of the study was to develop and...

Fish scales are ubiquitous by products of the food service sector that can be used to reinforce polymer composites. The majority of fish scales are disposed of in landfills, which is deleterious to the environment. This investigation concentrates on the tribological properties of epoxy composites strengthened...

Thermoelectric material can convert waste heat from the combustion gas into electrical energy. The objective of this work was to study the effect of fan power on the electrical output of a thermoelectric generator used in the combustion of wood charcoal. The side wall of the combustion stove has thermoelectric...

Dispersive soil poses significant risks in civil engineering due to their susceptibility to erosion and structural instability, particularly in embankments, dams, and infrastructure. Since the discovery of dispersive soils, their dispersion mechanism has been a widely discussed and researched topic....

This study aims to evaluate the potential of tannin extract from ketapang leaves as a corrosion inhibitor for seawater battery electrodes. The tannin content obtained from Soxhlet extraction, maceration, and ultrasonic-assisted extraction (UAE) using ethanol and acetone solvents at various extraction...

Urban renovation and ecological restoration is a city renewal action with Chinese characteristics, which is an important means of addressing urban diseases and promoting urban transformation and development. This article focuses on the problems brought by the rough development of cities in China to historical...

Traditional signal enhancement techniques, such as oversampling, face limitations due to their increased computational complexity and power consumption. As the demand for higher data rates and quality continues to grow, noise shaping techniques become crucial for improving the signal-to-noise ratio (SNR)...

This study examines the relationship between vocational interests, personality traits, and digital literacy skills, and their impact on academic performance in technology-related fields. Data were collected from 500 undergraduate students using the O*NET Interest Profiler for vocational interests, the...

An analysis of 516 core journal articles on rock and soil consolidation technology in China reveals that research in this field has grown since 2005. Research hotspots include consolidation of soil, excavation pits, loess, and shield tunnels, with numerical simulation being the frontier. Consolidation...

The urbanization process has caused several problems, such as clean water, environmental degradation, and waste management, especially in the peri-urban area. The solid waste management system is a type of basic urban infrastructure that often faces the problem of overcapacity in the peri-urban area....

The online learning process or e-learning requires students to be able to use various Online Video Conference (OVC) applications such as Zoom, Google Hangout Meet and Microsoft Teams. As with other products, OVC user satisfaction must be the main concern of product development companies so that the product...

It's likely undetermined case that the observed signal is less than the number of source number, while the FSK signal of track circuit is mixed with a variety of interference signal. The traditional independent component analysis (ICA) cannot separate source signals. The article separate source signals...

No position sensor Brushless DC motor is widely used in industrial and other fields of automation and consumer areas. Whether it is industrial automation or consumer areas, no position sensor brushless DC motor have achieved more significant results. No position sensor Brushless DC motor has changed...

In order to implement the informatization under the condition of forces global training requirements, the paper constructed the basic process of the battlefield environment simulation model, including geographic simulation model, simulation models of meteorological and electromagnetic environment simulation...

In view of the situation that the transmission elements of YS3118 CNC gear hobbing machine are too many and complicated, leading to transmission errors which cannot guarantee the machining precision, Based on SOV theory, with CNC gear hobbing machine as example, the method of using state-space model...

Study the effects of diesel engine emission characteristics with different adding proportions of ethanol on a DI diesel engine. The results show that with the increasing of ethanol blending proportions, the diesel exhaust gas decreases with the addition of ethanol, the emission of NOX also reduces significantly,...

Design and development of online evaluation system is the current hot research about the online learning evaluation, but the current implementation of the evaluation systems are mostly based on the given evaluation model to develop an experimental system or build a technology framework, which do not...

Firstly, we analyse the common character of inspection testing and certification. Then based on the theory of game theory, the paper analyses the act of finite repeated game by the coal ore inspection. Some measures should be taken to enhance the international competitiveness of the inspection testing...

Aiming at improving vehicle handling and stability performance, a model predictive control based vehicle yaw stability controller is designed via active front steering system. In this paper, the reference yaw rate is varied in each prediction horizon, which can predict the driver's intention. And the...

Spent galvanic solutions are highly aggressive and contain substances, suitable for reuse. Regeneration of these solutions represents both an environmental and economic issue of actual problem. The efficiency of electrochemical regeneration chromate electrolyte of anodic oxidation was monitored. The...

This investigation was undertaken to evaluate a new kind of polycarboxylate superplasticizer .Used polyoxyethylene ether (TPEG), acrylic acid (AA) functional monomer (A)and as the monomer, hydrogen peroxide (H2O2) as initiator, Vitamin C (Vc)as reducing agent, TGA as chain transfer agent, synthesised...

A 2-DOF model with the coupling of vertical and torsional motions is considered to study galloping of transmission lines in this paper. Based on Lagrange equation, the equation of motion is established. dynamic analysis is obtained by using Newmark- method in an example. Finally, anti-galloping VED is...

In this paper explore the terahertz (THz) wave generation based on cavity phase matching (CPM) difference frequency generation (DFG) in a GaAs crystal sheet. This scheme applying cavity phase matching (CPM) is proposed. The wave propagation of the higher frequency pump wave is parallel to the wave propagation...

According to the characteristics and structure of high performance concrete, influence laws of new type lime and calcium sulphoaluminate expansive agent on mechanical properties, deformation properties and microstructures of C50 concrete were investigated. The results show that with the increase of doped...

In order to verify the rationality of the straight pipe's design for the ultrasonic heat meter calibration device, the Computational Fluid Dynamics(CFD) was used to the simulation for the DN25 heat meter, the straight pipe length of the domestic typical structure ultrasonic heat meter was determined...

Earlier research has demonstrated that rigid base, when properly applied, can enhance the cracking and rutting resistance of asphalt concrete layers in pavements. This study focussed on developing the temperature stress distribution of roller compacted concrete(RCC) base by conducting appropriate experiments...

This study evaluates the effects of fly ash microsphere (FAM) on the flowability and cohesiveness performance of cement paste. FAM is a superfine fly ash captured from the coal-fired power stations. It has a mean particle size of around 2 mm and is of spherical shape. An experimental program comprising...

The applications based on Internet of Things are widely used. In these applications, how to efficiently compressed wireless sensor data and recover them accurately is an important problem. In order to solve this problem, we design an agricultural sensor data sparse representation and recovery method...

Design of the main controller using fuzzy logic theory on the basis of the traditional PID control, Using the fuzzy mathematics theory, the use of fuzzy sets to represent the regular condition, and the fuzzy control rules and the relevant information in the control system in the knowledge base as a knowledge,...

In this paper, we investigate the properties of ultrashort pulse propagation in normal group-velocity dispersion (GVD) fiber based on nonlinear Schrodinger equation. A numerical model is established and is programmed and calculated by the split-step Fourier transforms. Nonlinear pulse evolution transmitted...

Aiming at solving the problems of low-efficiency and high-cost of existing auto-focusing methods for microscopic imaging, an on-line auto-focusing method is proposed and developed using dual photodetectors. Firstly, two identical photodetectors are placed in symmetrical positions with equal distance...

The paper uses the uncertainty principle and no-cloning theorem; then combines the fundamental properties of quantum mechanics with the cryptographic hash function together; after that proposes a new security quantum blind signature. The analysis of security shows that the improved scheme has the feature...

Objective: To explore the expression level and correlation analysis of fibroblast growth factor 21 (FGF-21) and its biochemical indexes in serum of patients with hypothyroidism. Method: To collect 168 cases of patients in the Affiliated Hospital of Beihua University, 62 cases of hyperthyroidism group,...

With the development of economic, the construction of offshore artificial island is more and more developed. As one of the common cofferdams, the gravity cofferdam has been widely used in the wharf and breakwater engineering. The deformation is analyzed using finite element method and the results show...

This article focuses on how to accurately evaluate the influence of sound velocity vertical structure on sonar detection performance under acoustic convergence condition. Combining acoustic propagation model with sonar target detection theory, a quantitative performance evaluation model is constructed...

Abstract Texturized Vegetable Protein (TVP) is made from soy protein by extrusion method which is intended to replace meat. The addition of Xanthosoma Sagitifolium Powder (XSP) in the TVP matrix is expected to improve its functional properties. The objective of this study is to determine the effects...

Based on core observation and thin section authentication, the control factors of Oxfordian Stage carbonate reservoir of Odjarly Gas field of Amu Darya Basin were discussed by comprehensive utilization of geological, drilling, seismic data etc. It was concluded that the carbonate reservoir developed...

Based on Reissner theory, this paper investigates the vibration problems of rectangular thick paltes by applying boundary integral method. This paper presents the concept of the quasi basic system, applies the boundary integral method in it and the actual system, and derives the governing equation and...

Counting the number of passengers getting in/out of a bus in each station is a challenging task in smart bus field. To solve the problem, this paper presents a method of automatic people counting for a bus based on a RGB-D video, a zenithal camera in the bus door capturing the passengers flow is set,...

Preeclampsia still becomes a leading cause of maternal and perinatal mortality. The placenta is a critical subject in the pathogenesis of preeclampsia. Excessive apoptosis can cause the malfunction of trophoblast cells in their ability to remodel spiral arteries. Uteroplacental ischemia and endothelial...