Advances in Engineering Research

In view of the disadvantages of superfine fiber nonwovens materials made by polypropylene (PP), such as poor hydrophilcity, deficiency of antibacterial property, poor hand feeling, we chose polylactic acid (PLA) slices as the raw material to make superfine fiber non-woven materials, which is quite antibacterial...

Massive Open Online Course [1,7] (referred to as MOOC) is currently the hottest online education model. It is mainly composed of many micro-course videos, and has greatly changed the way of learning. But most of the micro-course videos in MOOC are traditional, students will feel boring for a long time,...

In order to research the influence of distributed generation access to distribution network, a mathematics model of distribution network reconfiguration with distributed generation is presented in this paper. Fireworks Algorithm is used to solve this problem. According to the characteristic of distributed...

Many new characteristics are introduced in the mobile computing system, such as mobility, disconnections, finite power source, vulnerable to physical damage, lack of stable storage. Since the related log-based rollback recovery fault tolerant schemes may still lead to dramatic performance loss in failure-free...

Manganese-copper bimetal oxide catalysts supported on ZSM5 were produced by incipient wetness impregnation for selective catalytic reduction of NO with dielectric barrier discharge plasma. The significant enhanced activity of catalysts was exhibited with the increasing calcination temperature from 350øC...

The article deals with finding the optimal floatation conditions for the final tailings of wet magnetic separation. To solve the problem, several laboratory tests were made using a floatation machine, which helped to determine the needed reagent composition, temperature and time of reverse cationic floatation....

Ag/AgCl/Ag3PO4 plasmonic nanocatalysts were prepared through the ion exchange and subsequently light-induced process. The obtained samples showed a high photodegradation capacity for prometryn, bentazone and metribuzin under visible light irradiation. Effects of reduction time (RT) and Cl/P in the synthesis...

A long time immersion test of silica fume concrete specimens in sulfuric acid is carried out.On the basis of experimentaldatum, a novel prediction model for sulfuric acid corrosion of concrete based on support vector machine (SVM) is proposed. The design steps and learning algorithm are also given. Five...

Oxalate-loaded microcapsules can be used as applicable catalyst of in-situ heat system for hydraulic gel fracturing. In this study, oxalate-loaded microcapsule was prepared with AS as the shell material via phase separation. The product was characterized by thermogravimetric analyzer (TGA), laser diffraction...

Split appeared after initial interaction between honeycomb core and projectile debris when projectile hypervelocity impact on honeycomb sandwich panel. In order to investigate the split characteristics of projectile debris, a 3D simulation model of projectile hypervelocity impact on honeycomb sandwich...

Aiming at the characteristics of ilmenite ore with a low grade, fine disseminated grain size and containing plenty of mud in Kunming Yunnan, the mineral properties of the ore samples in this area were analyzed and exploratory experiment of mineral processing were researched in this article. The results...

The nonlinear and impact loads in the power network consume large amounts of reactive power. And the amount of the reactive power compensation is different in a state of work. The traditional reactive power compensator is difficult to meet the needs of the reactive power compensation. Therefore, a method...

The aim of the study was to investigate the peculiarities of microbiome and seed bacterial endophytes isolated from different varieties of spring wheat grown in different areas of Eurasia (European part of Russia (Volga region), countries of Central Asia). The main method of the microbiome studies was...

Digitalization of low-pass filter produced from first-order inertia link is carried out firstly in this paper. Then an improved algorithm is proposed to achieve better low-pass characteristics by smoothing the first n-part data and using the smoothed data instead of n-1 based on the first step. At last,...

In project implementation, it is also known as the Implementation Budget Plan. The Implementation Budget Plan is a real cost that is used during the course of the project until the activity is completed. So with the calculation of the RAP before submitting a tender, the contractor can estimate the total...

To enrich the basic theory of the reductive decomposition process of PG(phosphogypsum), emphasis was laid on the exploration of the impact of the main impurities on the process. Firstly, the simulation computation was done on the systems of pure gypsum mixed with coal with or without impurities under...

Taking machinery roadway, ventilation passage of Roadway 8203 of Guobei Mine in Huaibei Mining Group as the research background, applying basic theory of modern solid mechanics, interaction mechanism between metal bracket and bolt were studied in the condition of large loose circle, high ground pressure...

Based on benefits evaluation, a location model of CMS is provided in the paper. According to the character of the highway network, some parameters are simplified to calculate traffic flow and attenuation coefficient in the model. The results verify the rationality and practicality of the method.

According at the inconsistency problem of a large number of electric vehicle lithium in battery group in series, this paper designed the control strategy of hold open circuit voltage, charge and discharge balance and the end of the interrupt equilibrium. This paper combined with the kinematics sequences...

Image enhancement has been an important technique for image analysis. The purpose of enhancement is suppressing noises and enhancing image details. However, most of algorithms only focus on the noise suppressing or detail enhancing. In this paper, an algorithm which could both suppressing noises and...

The specific model of Intrusion Detection Based on clustering and boundary points detection was elaborated in this paper, and the data processing, clustering analysis, intrusion, intrusion response, typical data warehousing the five stages were described. Based on the NPRIM algorithm, the clustering...

The charging characteristic of micro-sized particulates immersed into low temperature argon plasma was studied via particle simulation employing Particle-in-Cell (PIC) and Monte-Carlo (MC) hybrid method. The net charge of a dust particle was determined by counting the number of electrons and ions reached...

In recent years, unattended substation has been widely promoted in power system. Although advanced automation technology has provided technical assurance for the development of unattended substation, the achievement of “no one left” at substations under the current situation requires not only high automatic...

In the history of the Daqing debris flow development zone on the right bank of Dadan River in Lijiang, the debris flow disaster occurred many times, resulting in the destruction of the farmlands near the valley and the destruction of the road and bridge, which seriously threatened the safety of the lives...

The development of technology and information to make millennial society now began to change the way shopping that initially shop conventionally to shop online, The rapid growth of e-commerce market share in Indonesia is already no doubt. With the number of internet users reaching the number 82 million...

In order to solve the problem of massive data storage and satisfy the requirements of data confidentiality and integrity in smart grid, this paper analyzes the characteristics of existing security storage solutions, then combines with the special occasions in smart grid, designing a strategy of security...

For achieving the aim of long-term success in executing the "Going-out" strategy, it is essential for Chinese international contractors to manage marketing development risks accurately, effectively and lastingly. A management mechanism and detailed procedure for marketing development risks was developed...

Urban constructed wetlands play an important role in water purification, water conservation, biodiversity conservation and so on. The status of the water quality and the ability to purify water quality are the important evaluation indexes to evaluate the function of constructed wetlands. Constructed...

It is not a pleasant experience to queue for hours in airport security. Our mission is to model the long queuing time of airport passengers. We established queuing models to identify the bottlenecks that disrupt the passenger throughput.

The CS block of Chaoyanggou oilfield is a extra low-permeability reservoir. In the process of water flooding, some problems which influence exploitation effect are commonly found, such as high flooding pressure and insufficient injection in water wells. Based on the analysis of lithology and physical...

The traditional direct torque control belong bang-bang control[1], has a relatively large torque ripple and flux ripple, The space vector pulse width modulation (SVPWM) with direct torque combined[2], can effectively suppress torque ripple and flux, This paper will apply to the feasibility of SVPWM technical...

The model of the power system load has an important impact on power flow calculation,stability analysis.Compared with the traditional load modeling method to determine the structure further identification of the model parameters,using the genetic programming to load modeling do not have to preset the...

Frozen soil is a kind of special type of soil; it’s sensitive to temperature and quite unstable. In seasonal permafrost region, the fluctuations of temperature will cause a large degree of influence on frozen heaving characteristics. This paper selects the highly frozen heave sensitive silty clay of...

In this paper, an energy analysis model is set up in order to clarify the effect of insulation materials on the thermal performance and the energy consumption of building envelope. Three types of insulation materials commonly used in Germany including mineral fiber, polyurethane and vacuum insulation...

Aiming at the fault early warning of transformer oil chromatographic commonly used the methods in the national standard. In this paper, a method is proposed to obtain alarm thresholds of each component gas within transformer oil chromatogram based on statistical analysis of numerous data. Compared with...

EPC process, based on the casting structure, technical requirements, production volume, production conditions determines the casting solution, process planning. In this paper, the author from three aspects , the analysis of die casting process design principles, design principles and infiltration technology,...

The blower with Active Magnetic Bearing (AMB) has the advantage of high speed, high reliability, small size, good adaptability. Power amplifier is an important part of the magnetic bearing system, directly determines the magnetic bearing system performance. The three-level PWM signal generation algorithm...

More and more documents are scanned into digital image, meanwhile, the document scanned into digital image will appear the phenomenon of widespread distortions and shadows. Distortions in a variety of document images have an impact on people's reading comprehension or automated document image processing....

With the advent of era of intelligence, human skeleton identification and capture have drawn more and more attention. Human skeleton identification is the tendency of game design in the new media. However, there is a lack of theory about how to integrate skeleton identification with game design, and...

This paper analyzed the vertical distribution and seasonal variation of Hg in waters in Jiaozhou Bay in 1988. Results showed that Hg contents in surface and bottom waters were in order of spring >summer. In case of Hg contents were relative high/low in surface waters, Hg contents in bottom waters were...

Based on the pillar blasting recovery and goaf stability control of the 3–6# ore body of Baiyinnuoer lead-zinc mine, a HJC model of lead-zinc mine surrounding rock is established to simulate the safety and stability of this blasting project. To determine the parameters of the surrounding rock HJC model,...

A health and financial crisis has been brought on by the COVID-19 pandemic. The tight restrictions put in place to stop the COVID-19 virus have affected and limited economic activity, resulting in a drop in per capita income and an increase in the population of the poor. This research aims to analyze...

Bioconversion of cellulose and xylose is critical for the economically utilization of lignocellulose resources. Cellulose and xylose utilized strain Bacillus cereus Yc-A1 with highly ethanol endurance ability was present. The strain Yc-A1 was identified according to the physiological and phylogenetic...

Taking overlap joint as the object, it simulates welding process. And it obtains residual stress and distribution curves. By simulating the equivalent form of tack welding, it discusses the influence of tack welding by XYZ displacement constraint, X displacement constraint, node matching and adhesive...

A compressive sensing based method is proposed for reconstruction of radar image of 3-D geometry in this paper. Using the sparse property of the geometry, compressed sensing performs a low-dimensional, non-adaptive and linear projection to acquire an efficient representation of a compressible signal...

3-chloro-2-oxo-butyric acid ethyl ester 5 is an important intermediate in many biologically active compounds such as thiazole carboxylic acids. In this work, a rapid synthetic method for compound 5 was established. The compound 5 was synthesized from the commercially available diethyl oxalate through...

With the rapid development of computer vision technology, Scene Text Recognition (STR) in complex scenarios has become a critical technology in intelligent security, autonomous driving, augmented reality, and related fields. However, traditional Optical Character Recognition (OCR) methods show inherent...

In order to prevent the four-wheel independent drive electric tricycle in differential drive active steering to understeer or oversteering. It is necessary to control the vehicle, thus setting up four degrees of freedom vehicle model and using the MRAC control strategy to control vehicle. Using simulink...

This paper analyzed the distributions and transfer processes of Cd, As, Cr, Pb, HCH, Hg and PHC in Jiaozhou Bay 1981. In according to the contents, horizontal and vertical distributions, and seasonal distributions of these pollutants, their water quality conditions, pollution sources, as well as the...

In order to make the optimization of model, firstly, supporting policies are pro-posed to ensure the optimal migration pattern; the NGO can increase the total amount of goods and improve the environmental carrying capacity. Secondly, the exogenous events will decrease the quota of refugees and increase...

Ammonium polyphosphate (APP) was encapsulated with different cross-linked structure tung oil phenolic resin(TPF) by in situ polymerization and it was performed that a study on the influence of the cross-linking agent type on the hydrophobicity of the APP microcapsules.The chemical and physical features...

The theoretical calculation formula of the power frequency electric field around the high voltage AC transmission line is improved through the research, and comparing the calculated results with the measured results of the 500kV UHV AC transmission line which has been built, the improved theory between...

The ceramic industry is one of Chinese symbolic industries. From ancient times, the ceramic industry has been the project focused and researched by the government. Because of the small temperature difference, energy-saving, high-level automation and so on, ceramic roller kiln has been widely used in...

A heuristic approach is proposed for the 3-staged two-dimensional cutting stock problem with usable leftover, where the unused rectangular segments can be returned to stock for future use. The approach is based on the recursive technique combined with beam search. A forward recursion is used to generate...

Print mottle is one of the most detrimental factors to general print quality, and to get high quality print, the most important thing is to resolve print mottle problem. The evaluation method for print mottle is proposed by means of discrete wavelet analysis, in which the index of print mottle is built...

With global warming of climate, melting of sea ice in polar region makes navigation in north pole course having been sealed by ice and snow possible. Meanwhile, north pole region gradually becomes a battleground for military and economy between north countries, the mystery of north pole northeast course...

In this study, a rhodamine derivative (RH-PY) with dual color (blue green to orange) and multiple response (light, acid gas, and force) was synthesized. The photochromic enhancement behavior of rhodamine derivative in polyurethane matrix was explored. By complexing polyurethane with RH-PY, the open-form...

Under the combat-targeted network layer description, the paper establishes layered network model for combat-targeted networks so as to facilitate the study on its self-recovery mechanism. Furthermore, it puts forward the optimal self-recovery strategy of the early warning network layer based on the load...

For the second order simplified model of servo system, the traditional PID control method is used to design the feedback controller of the servo system, and the PID control parameters are adjusted to make the output stable and smooth without chatter. On this basis, an improved nonlinear PID control method...

To optimize and control the indoor air distribution and quality, theindoor temperature and humidity were measured based on indoor fresh air system.The one measurementwas indoor temperature and humidity in both cases of return air and without return air in winter respectively. The other was indoor temperature...

the human lower limb model plays an important role in the simulation experiment, when it is used to do the rehabilitation training and the gait analysis. At present, the human lower limbs model is established in the experiment, that has a single function and does not have universality. In this paper,...

This study aims to reveal the level of contribution of the creative thinking learning model, by observing the factors that support student interest in learning. The number of respondents in this study were 22 students who took digital electronics courses 2 for the 2020/2021 academic year in the Electrical...

High efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE can be expressed mathematically in terms of controllable parameters Weight on Bit (WOB), Rate of Penetration (ROP), Revolutions per Minute (RPM) etc. Once the optimum WOB was determined, the correlation with Torque and Penetration...

In recent years, urban underground pipeline accidents have occurred frequently, which caused huge losses of property and personal injury. In order to ensure the safe operation of urban underground pipeline and strengthen the urban underground pipe network in all directions, in this paper, using the Java...

It's impressive to learn about how our minds work. In this work, we have discovered that when a person closes his or her eyes, the value of multiscale symbolic transfer entropy(MSTE) [1] of electroencephalogram (EEG, Lead Fp1 and Fp2) grows larger. In other words, the coupling of Lead Fp1 and Fp2 is...

Plate-cone reticulated shell is a new type of reticulated shell with good mechanical behaviour and technical economy. Wind-induced vibration response characteristics of plate-cone reticulated shell are studied, the fluctuation wind loads are simulated by using the wave superposition method in the paper....

It firstly illustrates the meaning of studying the line loss of distribution network briefly, analyzes the main reasons influencing the line loss of distribution network subsequently and finally puts forward specific loss reduction measures. Theoretical analysis demonstrates that these measures can effectively...

This paper conducts a case study focus on the difference between the quality of university education and job position demands. The study conducts a survey in some new employees recruited in 2017 by State Grid Corporation of China (SGCC) to get their professional background and their entry level comprehensive...

Food fibers are considered as nutrients, deficiency of which in a diet is pointed out in numerous studies. It is recommended to introduce both raw materials rich in cellulose, pectin, hemicelluloses, and isolated dietary fibers in the formulation of food products as sources of food fiber. On the basis...

A novel complex neural network modelwasproposed, which can be used to compute the largestreal part of eigenvalues and the corresponding eigenvector of a general real matrixin this work. Because of the smart regulatory factorof the model, the largest real part also can be extracted in the case of all...

High temperature SAW resonators were fabricated on YCa4O(BO3)3 substrates with cutting type of X-90° and Z-90° and langasite substrates with Euler angle of (0°, 138.5°, 117°) and (0°, 138.5°, 27°). The temperature characteristics of these resonators have been studied in this paper. The results show that...

Polylactic acid (PLA) fiber is a biodegradable material, and can be used as an alternative to petrochemical-based fibers. Printed PLA nonwoven products have a wide market. The pigment inkjet printing of PLA nonwovens suffers from some defects such as poor outline sharpness of patterns, poor rub fastness,...

This paper looks at using a space-filling hierarchy view to control and visualize security settings on a mobile device. The view is optimized for readability and navigation with limited display space and provides a more fluid user-experience with a color-coded overview of security risks and buttons to...

Parachute release device can be used in airdropping rescue robots when emergencies like earthquake and nuclear leak occur. The problem of inaccuracy exists in traditional purely mechanical design and time delay mechanism. In order to solve this problem, it is urgent to develop a suitable release device.

Some procedures or functions had be added to an ESTA (Expert System Shell for Text Animation) so that the ESTA and MATLAB can communicate via some data files.On this basis,a deep learning-DBN(Deep Belief Network) and two BP(back propagation) artificial neural network based on the MATLAB programming were...

This paper researches a 3D positioning scheme for emergency rescue of trapped firefighters at the fire scene. This scheme adopts Chirp Spread Spectrum (CSS) and its particular Symmetric Double-Sided Two-Way Ranging (SDS-TWR). Combining BMP085 pressure sensor to measure altitude, it can implement 3D positioning...

set up a dynamic model of adding hot water and divide it into two elementary models. Use the heat convection minimum entropy generation to prove that put the faucet at the bottom of the bathtub is good way for saving energy.

The analysis experiment of pharmacy practical instrumental is a very important part of pharmacy practical instrumental analysis course. However, due to the limited equipment, limiting short hours and other conditions, sometimes, we cannot achieve the intended purpose. Micro-lesson is one of the most...

1. Objective: To improve the synthetic procedure of the anticancer drug poziotinib. 2. Methods: The poziotinib was synthesized in six stages starting from 7-methoxy-4-oxo-3,4-dihydroquinazolin-yl acetate (2) by chlorinated, ammonification, hydrolysis, condensation, take off Boc and amidation reaction....

Viscosity restrain the road performance of asphalt mixture with geothermal regeneration. In the design and construction of the geothermal renewable asphalt pavement, the thickness of the regenerated layer is one of the most important factors that affect the mechanical response of the material. In order...

The article is based on precision CNC lathe spindle system of the 170CP06 as the research object.The steady and transient temperature field model of the mechanical spindle is established by using the finite element analysis method.As the heat rate for the load and the convective heat transfer coefficient...

In this study, we utilize EDC/NHS as catalyst to graft Single carboxyl porphyrin molecules onto acidized chitosan for synthesis of porphyrin-functionalized chitosan composite(PFCC) and testified its structure by FT/IR. In liquid phase, we identified the formation mechanism of molecule microsphere with...

The pyrimidine compounds are a class of nitrogen-containing heterocyclic compounds. 5-(4-bromophenyl)-4, 6-dichloropyrimidine is an important intermediate in the synthesis of pyrimidines, dimethyl2-(4-bromophenyl) malonate and 5-(4-bromophenyl) pyrimidine-4,6-diol are important intermediates in compound...

This research work has focused on the examination and verification of the influence for road user that the presence of the width of a traffic securing in winter in the snowy region, by conducting several experiments using driving simulator and the real car. And then, the management widths for senses...

X company mainly produces electric locomotive and urban rail vehicles. This paper takes the locomotive department of X company as the research object. It builds a performance management system by using AHP and fuzzy evaluation method. It constructs the index system by using the idea of BSC, questionnaire...

According to Generic Fanuc 5X Mill.pst post processing document and the discussion on modification method of main parameters of X Master CAM version five axes machining with double pendulum head, this paper compares manual calculation data of holes nodes with the automatic generation program after modification,...

Natural rubber(NR)/Epoxidized Natural Rubber(ENR)/Carbon black(CB), NR/ENR/silica(SiO2), NR/ENR/ montmorillonoid(MMT) and NR/ENR/carbon nanotube(CNT) were prepared in an open two-roll laboratory mixing mill at 5060 °C. Curing property and static mechanical property of NR/ENR composites with different...

The steel structures are widely used in modern industrial factory due to its advantages such as high strength, good plasticity, good sealing property, and short construction period. However the poor fire-resistance ability is the most significant weakness of the steel structures. The steel structure...

This paper gives a method of forecasting data evolution in a long term, its practical significance is predicting data evolution direction and targeting the data that need to be updated.With the assumption of no absolutly real data in the world, we could view the data updating process as a data evolution...

Aiming at the traffic safety and comfort issues of the tunnel lighting system,In this paper, taking the case of ChiBai Tunnel in Tonghua of Jilin Province and HeDa Expressway ShiDao-YangCha tunnel,different installation methods,installation height,installation angle,and different combination of lighting...

Intensity-modulation and direct-detection (IM/DD) orthogonal frequency division multiplexing (OFDM) systems have gained great attentions from researchers. However, the interaction between the chirp of direct modulation laser and fiber dispersion causes intermixing interferences among sub-carriers. Therefore,...

During the design phase of a new electronic monitoring and control system, carrying out research on inherent testability can promote the entire system’s testability level and make it be apt to diagnose fault and maintain high reliability. To improve the current insufficient application of inherent testability...

The pulse sequence is an important part of the magnetic resonance imaging (MRI). It is directly related to the resolution of medical image obtained by MRI, and other important parameters such as the imaging speed etc. Therefore, it is very important to develop newer and more efficient pulse sequence....

In the context of dense urban development, it is challenging to assess possible risks for buildings and structures being influenced by construction work, especially in the historical part of the city where historical and cultural properties and architectural monuments are located [10-12]. The paper presents...

Welded spherical joints’ stiffness has important influences on the strength and stability bearing capacity of reticulated shells. For complication of theoretical analysis and difficulty on experiments, the stiffness of welded spherical joints which is applied widely in the large-span reticulated shells,...

In order to solve the problem of parameter identification of ship's Maneuvering Motion, a fast convergent iterative least squares algorithm is presented considering nonlinear and non-stationary characteristics of ship motion in time domain. The speed and precision of parameter identification have been...

The generation tripping sensitive point could be located by absolute kinetic energy incremental index. A method was proposed which is used to locate this point based on the estimation of unbalance power during short circuit period. The voltage was separated to two parts: one was determined by the pre-fault...

Photonic Doppler velocimetry (PDV) is a fiber-based interferometer which has been widely used in dynamic shock physics research. Although the conventional PDV systems are simple to construct, it has special requirement to the probe for getting appropriate amount of reference light. This paper proposes...

In order to study the student occupant injury risk of school bus at the driving speed exceeding 30km/h, the numerical simulation model of children occupant restraint system of school bus was built using software LS-DYNA 3D. According to the China regulation of GB24406-2012, the model was loaded with...

This paper presents the implementation of an autonomous mobile manipulator robot using Robot Operating System (ROS) as middleware. Jetson nano 2GB is utilized as the onboard computer which runs Ubuntu 18.04 OS in which ROS is installed. ROS navigation stack is setup and configured for the robot navigation....