Advances in Engineering Research

System efficiency of pumping wells is an important indicator of whether the oil well running well. The higher the single well system efficiency, the more balance in whole system, and the less consumption of electricity. The results of test show that the pumping wells average system efficiency of Chaheji...

Mechanical course contains a complex internal structure. If daily teaching adopts traditional process, it is difficult to stimulate the interest of students and students may feel dull. At the same time, the mechanical device has a complex and compact body structure, and it is difficult to grasp the fundamental...

In this paper, the direct time domain vector finite element method was used to forward three-dimensional transient electromagnetic fields excited by loop source. From Maxwell's equations met by time domain electromagnetic field we can directly export the double curl equations met by electric field, and...

The issue on neural network method to solve compressed sensing problem is concerned. Combined with optimization technique, nonsmooth analysis theory, differential inclusion theory, and set-valued analysis method, a classical approximate compressed sensing model with dense noise is transformed into a...

Based on the monitoring data of surface subsidence in 230 mining area of Tangkou Coal Mine, the surface dynamic subsidence characteristic under deep mining subsidence and the maximum subsidence velocity were analyzed. The results showed that: in the deep mining that exceeds 300 meters, the ground surface...

By means of theoretical and empirical analysis, the capital asset pricing model (CAPM) and behavior asset pricing model (BAPM) were evaluated. The time series regression and cross-sectional regression were established with the empirical data from Shenzhen and Shanghai stock markets in the last two years....

Portfolio is one of research focuses in modern finance field. There are some kinds of assets to choose. How should we define the ratio of the portfolio in order to minimum the risk in the level of the established income, or at the established risk makes the benefit maximum. This paper introduces an Improved...

A new 2000V-4A Junction Barrier controlled Schottky (JBS) diodes module has been fabricated using 4H-SiC. The module is composed of two SiC JBS diodes, and it is used for rectifying circuits. By adopting the proper SBD metal ,optimized structures and fabrication process, we succeeded in achieving good...

In this paper, the quantitative structure-activity relationship (QSAR) model of biological toxicity (-lgRBA) for 209 kinds of polybrominated diphenyl ethers (PBDEs) was established from view of substituents descriptors and quantum chemical parameters firstly. Then, they were divided into different groups...

For the sake of implementing effectively detection and rapid exact identification for the chemical agents in sea-battlefield, the automatic detection technique using the neural network(NN) information fusion for the chemical agents, is studied. Firstly, the information fusion treatment model and system...

Conditionally the process of stress-strain development of the medium begins with dislocation in crystals; then it runs with the formation of a zone of rock fracture and ends with the collapse of the massif (fracture under natural conditions). Each stage of the stress-strain development or the change...

Coastal area resources that open access regime cause problem in its utilization, not least in South Bangka Regency. The aim of this research is to formulate alternative policy of coastal resource utilization between local fishermen and migrant fishermen. The method in this research is survey method....

For the cascade five-degree-of-freedom inchworm-imitating bipedal climbing robot body mechanism, multiple kinematic inverse solutions maybe generated due to redundancy in the D-H kinematics modeling process. Therefore, an optimal kinematic inverse solution selection method based on energy consumption...

In this study, a sound and light alarm function optimization scheme was put forward and successful implemented by the application of DCS sound and light alarm function. Using the function optimization scheme, the existing problems in sound and light alarm functions were deeply analyzed and well solved....

An experiment was conducted to study the effect of different concentrations (20, 40, 60, 80, 100mg/kg) of gibberellin (GA3) on antioxidant enzymes of ‘Hongdeng’ sweet cherries. The results showed that POD, CAT and SOD activity decreased during the development of sweet cherry fruit;GA3 concentration of...

Smart driving and eco driving now become an important issue which they integrate environment, comfort, and safety riding. To achieve this condition, it is needed measurements or evaluations on our riding behaviour. One of parameters that describes our riding behaviour is driving cycle. The variable that...

Design building codes are primary book for structural design engineers to calculate flexural strength. In the design building codes, concrete has important parts. Those are rectangular stress block model and compression strain. This paper evaluates flexural strength of the reinforced concrete beams using...

The analysis of farming systems functioning on reclaimed lands shows the need to improve their operation, based on the greening of reclamation activities, primarily within the protection of soil from degradation, its preservation and reproduction of soil fertility. Modernization of procedures for planning...

The article considers conditions for increasing passive safety of vehicles due to the use of temperature calculation in friction pairs of brake units taking into account their active heat dissipation. This temperature calculation allows designers at the design stage of new brake units to determine their...

This paper describes the information about how to administer and manage webMethods Broker. It describes how to create and manage Brokers on a broker server, set up access permissions, and monitor document traffic, and points out that the system administrator who is responsible for configuring and monitoring...

Tight oil is one of the important substitute areas of the oil industry in China. The effective development of tight oil is of great significance for the development of China's economic sustainable and stable. Changji tight oil of Xinjiang oilfield is a typical Chinese blocks of tight oil, it has the...

A numerical simulation method for the flight dynamic response of the elastic aircraft flying through the wind field over complex terrain is developed in this paper. The complex terrain model is established by the spline method based on the contour line of the map. The wind field is then simulated by...

With the application of multi-core processor, the data processing ability has been improved. More and more scholars pay more attention to the processing optimization of the task with the constraint of each other. Marco E.T. Gerards et al. have given the way to choose the optimal clock frequencies that...

According to the trait of Integrated Transportation Hub that it involves amount of stakeholders, dissevering the conflict management process will result in describing conflict inaccurately and keeping the conflict unresolved. Regarding of integrating the quantitative and qualitative approaches, we consider...

In order to fix the defect of large-volume-data transmission and system fault tolerance in the current remote proxy, this paper proposes a wide-area data interaction technology which can be applied to the future power dispatching system by utilizing advanced techniques such as elastic extending, load...

The researches give results on the ecology and phenology of the most basic and common types of blood-sucking midges of the Simuliidae family. This article shows dynamics of the species composition and average seasonal number of blood-sucking subfamily Simuliinae midges in water reservoirs of the Volgograd...

The root of Eurycoma longifolia or locally called as Tongkat Ali contains numerous health benefits, mainly due to the bioactive compounds. The main compound of interest is from the group of quassinoids which is also known as degraded triterpenoids such as eurycomanone, eurycomalactone, longilactone,...

This article describes an experimental study of the effect of using sawdust as a mixture of concrete pipe on water absorption and compressive strength. This research was inspired by the amount of sawdust waste from sawmills that had not been utilized. For this purpose, 18 specimens were made with four...

In a broad sense, social license to operate refers to the ongoing acceptance of a company’s or industry’s standard business practices and operating procedures by its employees, stakeholders, and the general public. In Mongolia’s case, obtaining a social license has become just as relevant as on the international...

Indonesia cultivates mangoes across an average land area of 176,000 hectares, yielding 1.4 million tons annually. Researchers have conducted similar studies to enhance mango orchard management techniques. This study uses OpenCV- based image stitching to assess mango orchard areas and provide accurate...

Weapon security is crucial in military environments. An automatic weapon rack locking system using fingerprint sensors can be an effective solution to prevent unauthorized access. However, in order to implement an automatic locking system an authorizing method using fingerprint is required. In the image...

The continuous growth of population increases the demand for housing and infrastructure, posing challenges in providing sustainable and environmentally friendly construction materials. Limestone, a non-metallic mineral commodity, holds significant potential as a construction material. However, its lithological...

At the level of technical education such as the Computer Network Administration Fast Track Program, the end report of the industry internship is one of the important aspects in evaluating the progress and skills of students. The research aims to implement an optimized management system to facilitate...

Alkali-activated concrete is a new type of environmentally friendly building material. The use of industrial waste marble powder to prepare alkali-activated concrete can reduce energy consumption. This study investigates the fracture properties of waste marble powder-slag-based alkali-activated concrete...

In order to investigate the effects of nitrogen (N), phosphorus (P), and potassium (K) deficiency stress on wheat growth and physiological characteristics, this study used wheat (Xinmai 296) as the experimental material. Four treatments were established: nitrogen-deficient treatment, phosphorus-deficient...

High content of pollutants can be harmful to the biota in salt water and fresh water. There is a change in the level of danger from substances that are not mixed to mixed. This study is important and necessary for the discharge of wastewater. The objective was to obtain a varied range of substances and...

Ships transporting pilots in mid-flight are ships with limited maneuverability, and frequent boarding and unloading of pilots within a short distance will inevitably increase additional risks. This paper takes the secondary pilotage risk assessment of Mirs Bay Liquefied Natural Gas (LNG) carrier as the...

In June 2020, the Indonesian Government announced to implement a new normal policy as a result of the increasing number of new cases of coronavirus disease (COVID-19) every day, but many new cases until August 2021 were still above June 2020. To control the spread of this pandemic, the Government implements...

For fully taking the advantage of independently controllable of torque of Four-wheel Independent Drive Electric Vehicle to enhance its stability, a 2-DOF vehicle reference model is set up based on Vehicle Dynam-ics foundation. On this basis, a variable universe fuzzy control strategy witch chose yaw...

Prionace glauca has high efficiency and long-distance cruising mode, its pectoral fins play an important role in keeping balance and stability. Selecting the pectoral fins as a breakthrough to conduct related research has an important value for the optimization design of autonomous underwater vehicle...

To prevent the numerical instabilities about checkerboards, mesh-dependency and localized eigenmodes in structural topology optimization with frequency constraints , an improved ICM method based on the new sine-type filter-polish function is presented. Moreover, sensitivity filter of difference of the...

Vehicle terminal is the main information source of vehicle networking, and also the key technology. Combining GPS, GPRS, CAN bus, sensors and embedded technology advantages, and based on the theory of public transportation intelligent terminal system, the design method of car networking and intelligent...

Abstract. To observe and analyze the application of the high-fidelity integrated simulation persons in the emergency nursing teaching effect. Methods: We select our hospital nursing 200 students that are divided into experimental group (100 students) and the control group (100 students). The experimental...

With the increasing capacity of PV systems in the grid, the grid-connected PV systems will have negative impacts on the grid in the case of a disturbance or a fault. In this study, a strategy of ‘DC voltage control’ is adopted. During the period of low voltage ride through (LVRT), the duty cycle of the...

Reinforcement corrosion in concrete is an important factor that affects the durability of reinforced concrete structures. In marine environment, especially, non-longitudinal cracks accelerate the intrusion of chloride ions into the concrete structure. Chloride ions destroy the passive film on the surface...

Fiber-optic icing sensor is a kind of light-intensity-modulation sensor. It can indirectly measure the ice thickness based on light intensity. To increase measuring scope of the reflective fiber-optic icing sensor, a fiber-optic icing sensor with multi-light paths is presented. , a set of fiber array...

To get good outdoor ventilation and create shadow areas, piloti is commonly used in tropical and subtropical climate zones, but there are few studies reveal the comprehensive influence of piloti on wind environment in residential blocks, and furthermore, a coupled simulation method, which offers high...

Photoelectric tracking system is widely used in space exploration, manipulation, laser communication and other fields. The implementation of ATP system is the key to achieve tracking.The use of double-closed loop control can give the system a higher stiffness, improve the system's anti-interference ability.The...

The dynamic responses of jack-up platform, in floating state, are calculated numerically. The finite element models of a jack-up are made. And the dynamic responses of the jack-up are simulated when the spud-can is driving downwards at different depths while the jack-up platform is floating on the sea[1]....

The failure process on the plain weave CFRP composite laminate under three-point bending test was monitored by acoustic emission (AE). Failure process was divided into stage I, II, and III based on the energy distribution along with the mechanical results. Moreover, various failure modes in every stage...

Based on Hoek-Brown failure criterion, selecting the plastic shear strain as strain-softening parameter and considering elasto-plastic coupling, the approach of solving nonlinear relations between stress and axial strain, hoop strain and volumetric strain in the post-peak region was proposed by modeling....

E-mount granite Pluton is located at the southwest part of Yangtze plate . To understand the formation environment of K-feldspar porphyritic granite from E-Mount approaches such as major and trace element analysis and zircon LA- ICP-MS U-Pb dating are used. According to the tests and analysis results,...

Middle phase microemulsion flooding is an effective approach to improve reservoir recovery. Using orthogonal experiment, we obtain the preparation of middle phase microemulsion formula of oil displacement system. Scanning respectively SDS concentration, concentration of n-butyl alcohol and Na2CO3, we...

Epimedium is a kind of traditional Chinese medicinal materials, which is regarded as, at present, the one of the most valuable medicinal plants in China. The chemical components of Barrenwort mainly contain flavonoids, phenol glycosides, chromones, phenylethanoid glycosides and steroids, which are verified...

A solar grain drier with a sun drying system and vacuum glass was developed and the corresponding water potential model was established in this paper. It was shown from the simulation analysis of the grain drying process that the moisture content of grain could increase to14.0368% with increasing the...

The pressure wave transmitted in the non-Newtonian drilling fluid is widely used for the information transmission in Measurement While Drilling/Logging While Drilling technology. It is essential to get the friction model in the non-Newtonian drilling fluid to evaluate the signal attenuation. A model...

This thesis studies SRS noise estimation method with multi-users in the Long Term Evolution(LTE), and proposes a Discrete Fourier Transform (DFT) time-domain filtering algorithm based on interference cancellation. By calculating signal power in the system protecting band, decision threshold of time domain...

The network fracturing has become the key technology to develop the tight oil reservoirs. This fracturing technology creates a complex fracture network in the stimulated region. The primary goal of this paper is to optimize the fracture system conductivity in tight oil reservoirs, and to analyse the...

The pump operation condition and configuration are closely related in water injection system, but the existing operation optimization is carried out in the given pump configuration. In order to optimize the operation condition of the new-built system, the pump configuration and operation parameters are...

The microwave pyrolysis of the low-rank coal is a new technology, which solves the utilization problems of coal cleaning conversion. On basis of experiments, this paper conducted comparative study on microwave co-pyrolysis products of low-rank coal under H2 and N2 atmosphere, respectively. The composition...

In this paper, a novel three-phase four-wire photovoltaic system is proposed for the compensation of harmonic, reactive and three-phase unbalance in the distribution network and the demand for renewable energy generation. A novel three-level DC/DC converter is adopted for photovoltaic arrays and energy...

This paper presents the development of an underwater plasma for wastewater treatment. A treatment reactor made of acrylic with multiple stainless-steel rods as the cathode electrode and stainless-steel plate as the ground was used. To find the suitable frequency for treatment, 25 kV pulse high voltage...

The paper presents the measurement results of construction and finishing materials, agricultural products (honey) on the content of radionuclides in Penza and Penza Region. The obtained dependences allow confirming the dependences between a radon exhalation, type of construction and finishing materials....

Rock fracture propagation is a major hazard for mining and tunnel excavation in fractured rock masses or coal seams. This paper describes a study of investigating the mechanisms and pathways of rock fracture under uniaxial compression. A rock-like material which consists of model gypsum, water and diatomaceous...

Pityrogramma calomelanos is fern in the Polipodiaceae family that grows in tropical Asia including Indonesia. This research aims to determine the molecular structure of phenolic compound isolated from the dichloromethane extract of the silver fern’s aerial part and toxicity activity test. The extraction,...

PSS2B is a kind of dual-input power system stabilizer which takes rotational speed deviation and electrical power deviation as its inputs. The shaft torsion signal introduced by the rotational speed deviation have an effect on the low frequency signal each other. The interactions affect the parameters...

Recommendation system has been one of the subject of intense in Computer Science, and it is widely used in Information Science. Various types of e-commerce systems and a large number of Internet applications need to use recommendation system to support their service. Recommendation system is aimed to...

A series of V2O5-CeO2/TiO2-SnO2 catalysts were prepared with different CeO2 content to investigate the effect of Ce modification for selective catalytic reduction of NO by NH3. The obtained samples were characterized by BET, XRD, HRTEM,H2-TPR and FT-IR. The catalytic test was also investigated on a fixed...

According to various problem of oil contained bearing of metal link burned, it is done as relation study of grind coefficient and oil leak, temperature rise and load pressure. The result is given that oil leak is more serious in the condition of higher pressure and lower speed, and grind coefficient...

When rectifier station of LCC-HVDC has power fluctuations running at large load, AC filters controlled in groups at rectifier station are switched frequently. That problem potentially has impact on service life of corresponding circuit breaker and threatens the safe operation of the DC system. In this...

According to the thermal equilibrium equation, the resistance value of the film is converted into the air flow rate, and the flow rate is converted into the wind pressure by the Bernoulli equation. The wind pressure is detected based on the film resistance. Using the digital filter to remove the collected...

This research is purposed to examine between emotional maturity and couples-social adjustment on commercial aircraft crew (pilots and flight attendants) with their partners. This research involved 90 respondents (45 couples) with ages ranging from 18 to 62 years old. We use a quantitative method with...

Nutmeg (Myristica fragrans Houtt.) is a native commodity of Indonesia. Propagation of this plant is relatively difficult and takes a long time for germination because of its hard seed coat. This study aimed to evaluate the effect of scarification and gibberellin (GA) application on the nutmeg seed germination....

Cellular damage induced by free-radicals like reactive oxygen species(ROS) has been implicated in several diseases. The ROS radicals like alkoxy radical(RO-) and peroxy radical (ROO-) are similar to those that are physiologically active and thus might initiate a cascade of intracellular toxic events...

Batik Sidomulyo Batu City is one of the hand-crafted batik Small and Medium Enterprises (SMEs) that uses synthetic dyes. The use of dyeing technology in batik making process generates a large amount of wastewater, which can lead a harmful effect to the environment. To date, Batik Sidomulyo SME uses two...

Acid mine drainage (AMD) is a mining-related problem that is causing harm to the natural ecosystem. The AMD originates from oxidized and sulfide ore stockpiles and contains high concentrations of dissolved copper and other contaminants. Therefore, many applications have been taken account into to process...

Air transport has become the primary mode of connecting global regions, supporting international trade, cultural exchange, and economic growth. Data from Indonesia’s Central Statistics Agency (BPS) shows a significant contribution of the transportation and warehousing sectors to the country’s GDP, reaching...

This study introduces an AI-powered system using a customized ResNet50 model to enhance lung disease diagnostics through image analysis. Our model accurately classifies lung conditions, including adenocarcinoma, squamous cell carcinoma, and benign tissue, achieving 93.25% accuracy compared to the standard...

China is currently in a stage of rapid aging. Traditional living circle planning, mostly based on the mobility standards of ordinary adults, cannot adequately meet the needs of the elderly for living facilities. Based on this, this study takes Liwan District of Guangzhou as an example to quantitatively...

The purpose of this study is to classify drought zones on Flores Island, Indonesia, using the Extreme Gradient Boosting (XGBoost) algorithm. XGBoost is well known for its ability to handle tabular data with high complexity. However, previous studies have shown that the performance of XGBoost largely...

With the continuous growth of global energy demand and the increasingly severe environmental problems, the development and utilization of new energy have become the focus of attention for countries around the world. Among numerous new energy sources, wind and solar energy have received widespread attention...

This paper aims to explore the features of capital structure and related financial strategy of circular economy corporates as well as their inter-relationships. The methodology adopted is obvious of some inventively combined methods, since previous researches have seldom studied this field and few conclusions...

In this paper, Effect of different contents of Ce on ZK20 magnesium alloy by conventional metallographic, X-ray, SEM, XRD, analysis of Ce element exists in the form of ZK20 magnesium alloy and microstructure of action the results show that: in the experimental range (0% ~ 0.68%Ce (mass fraction)), with...

A pot experiment was conducted to study the effects of exogenous melatonin (MT) on photosynthetic characteristics of radish under aluminum (Al) stress. Five treatments were used in the experiment: seeds were soaked with 0 (CK), 50, 100, 150 and 200 mol-L-1 concentrations of melatonin solution. The results...

With the popularization and application of cloud computing services, cloud storage has become a typical representative of cloud computing services. But meanwhile, we must also recognize that the problem of storing data in a cloud environment can be brought to us. In this paper, we propose a cloud data...

One new organic-inorganic hybrid materials of complex Ag2ClO5N5C28H22 (1) was synthesized by evaporation methods using 2-Chlorobenzeneacetic acid(2-CBAA), 4,4'-dipyridyl (4,4'-bipy), and AgNO3. And the complex was characterized by elemental analysis, FT-IR, thermogravimetrie analysis(TGA), XRD, X-ray...

A kind of distributed array structure micro channel heat sink is studied in this paper. The fluid height and the ratio between fluid and channel are optimized by computational fluid dynamics (CFD) thermal-mechanical coupling method. The typical heat sink is fabricated by UV-LIGA and non-silicon MEMS...

Selecting the appropriate seismic response spectrum function, using the finite element software of Midas-Civil to establish the model of tied arch bridge. At the same time, the internal force and displacement response of the bridge key interface of the vertical is analyzed by using the response spectrum...

In order to determine the drilling gas drainage radius, several different spacing drilling group were set up, and the relationship between drill pumping rate and the drainage time was solved through the relationships between drill gas flow and drainage time. Then on the basis of objective standards in...

In this paper, the concept and principle of quantum radar are introduced in detail. First The Quantum radar mode using entangled photons is discussed, and the simulation scheme of quantum illumination is designed. Then, the principle of each module is analyzed, and simulation programs are finished with...

Through 4 weeks HiLo training of 72 SD male rats, some very obvious changes of Rat skeletal muscle SDH was found in a quiet state. Some changes of SDH were found immediately after exercise but not obvious, but three hours later after exercise the change of Hypoxia and exercise compound group was more...

Based on the Mindlin solution of stress distribution under internal point load in semi - infinite space, this paper presents a new Practical Algorithm for the tip bearing capacity of large diameter pile based on displacement control. First, use the Mindlin solution under circular uniform load to derive...

The mathematical models of compressor, evaporator and condenser in a refrigerated container’s refrigeration unit were established, which were used to form the whole system model for steady-state simulation according to the coupling relationship among them. The full-load performance of the refrigeration...

In this paper, by adding different additives in Solar Two molten salt in order to form multiple composite molten salts. And testing the thermal performance of mixture molten salt can be comparatively analysis of the modification effects of different additives. The melting point and latent heat of mixture...

In this paper, a new type of foam concrete (FC) incorporating ceramsite as a lightweight coarse aggregate was prepared, i.e. ceramsite cellular concrete (CCC). An experimental research was conducted on its thermal properties to clarify the correlation between thermal conductivity and density, compressive...

Pedestrian Evacuation Simulation can be used to support developing the evacuation solutions for subway stations. Although the pedestrian evacuation based on general purpose processors acquire good effect when the simulation scale is very large. We investigated the effect of the layout of subway stations...

Synthetic nanomaterials have the disadvantages of large-scale investment, high energy consumption, complex production process and heavy environmental load. Palygorskite mineral nanofibers are typical porous materials widely existing in nature and have the advantage of high surface area, moderate cation...

Due to the fact that the German Railroad reduced the maintenance work on the important railway line Nuremberg – Regensburg, section Deining - Batzhausen they had several cases with blocks laying at the tracks. Therefore they decided to stabilize the 70° steep weathering prone sandstone slope. As a protective...

The warehouse management mainly consists of the processes of warehouse entry, warehouse delivery, storage moving and inventory verification. In traditional warehouse management, bar-code technology is widely used while the RFID becomes more and more popular in the modern warehouse management. By contrast,...

With the ocean having become the hot of new energy development there is a sharp increase in the investment of ocean energy development. Dozens of unites have carried out researches of ocean energy technology under the National Marine Renewable Energy special funds to support. With the depth of the projects,...