Advances in Engineering Research

In order to simplify the generation of phase-shifting waveform and reduce the range of phase angle, an angel-fixed method to generate the phase-shifting waveform is presented in this paper. Firstly, it studies the advantages and the topology structure of the bi-directional full-bridge DC-DC converter,...

With the development of information technology, network technology and communication technology, mankind has entered the information society. Information society of enterprise management concepts, methods brought revolutionary changes in enterprise information management is a big trend in today's world...

The hospital is an important part of public infrastructure in the development of modern society. As a modern hospital, it should adhere to the principle of people-oriented and the service objective of modern hospital architecture design. On the base of theory and practice analysis, the trend of modern...

Solar-powered nodes have been employed in farmland wireless sensor networks to prolong the lifetime, which can increase the cost at the same time. The energy acquisition mode of solar-powered node is intermittent and nonlinear, because it is easy to be influenced by the external factors. In this paper,...

The method of uncertainty evaluation of determination of toluene in room air has been established. Gas chromatography with thermal desorption was used for determining of toluene. The main factors which can affect on the analytical results were identified. The measurement repeatability, standard solution...

In this paper, a large-scale cloud platform Virtual machine anomaly detection key technologies. For cloud environments systematic study of the feature extraction technique is proposed based on principal component analysis (PCA) for feature extraction algorithm. The algorithm selects the most efficient...

The robot manipulators is a complicated uncertain nonlinear system, mainly due to the nonlinear and coupled character of system equations and the lack of a precise model for the dynamics and parameters, as well as the appearance of internal and external perturbations. A new control algorithm was proposed...

As an important part of energy industry, power grid plays a pivotal and irreplaceable role in promoting low-carbon development. In this paper, under the perspective of supply chain carbon management, the pathways of power grid corporation’s carbon emissions reduction were discussed, including decreasing...

The evaluation of innovation cities assesses the realization level of innovative cities through the evaluation of the comprehensive innovative level. In this paper, the author builds an innovative city competitiveness evaluation index system based on the theoretical analysis, and evaluates Xuzhou city...

By taking a certain type of rocket launcher structure as the research object, its loading analysis was carried out. By applying the ANSYS as a tool and by combining a typical working condition to carry out finite element analysis (FEA), the deformation and the stress values under the work condition were...

Emission is a key factor to govern the mass concentrations of air pollutants including PM2.5, but currently remains large uncertainties. In this study, we firstly analyzed a commonly used emission invertory-MECI10, to understand the situations of emissions from the different major sources such as industry,...

The effect of DL-Methionine (DM) on the electroless silver deposition was investigated. The deposition rate of electroless silver deposition was inhibited by an addition of DM. The effects of DM on the polarization curves were studied by LSV. Not only the anodic oxidation reaction but also cathodic reduction...

For the current vocational education training equipment about photovoltaic generation, the control system is lacking of output voltage regulation module. To solve this weakness, this paper puts forward an optimized control system that can provide a constant DC 48V voltage source to ensure the stable...

Through the research on the ultrasonic fish-finding, design a real-time detection system of fish-finding based on LabVIEW and NI PCI-6024E data acquisition card .Under the support of LabVIEW, can be a variety of data real-time acquisition of the fish, through the analysis of the data to provide accurate...

This paper shows electromagnetic induction heating technology advantages and great potential application as a new heat source, which is based on the principle of electromagnetic induction heating technology, application methods and application fields, and combined with comparative analysis of the test....

In the robust control theory, the norm boundary of uncertainty set (i.e. the uncertainty level) is an important issue. When the level of uncertainty is too large, the results will be too conservative, and when the uncertainty is too small, the results will be too optimistic. Two methods for determining...

Shot peen forming is an effective plastic forming method for integral panels with variable thickness used in aeronautical industry. 7050 aluminum alloy flat plates and 3-stiffeners panel were peen formed. The deformation behavior of those workpieces was investigated. The results reveal that the contribution...

Diuridine P2, P3- (dihalo) methylenetetraphosphates (Up2CF2p2U and Up2CBr2p2U) were synthesized via the activation of P (V) –N bond. The key uridine 5 -phosphoropiperidate intermediate was obtained via a redox condensation method.

papermaking midcourse water is the most important papermaking wastewater, whose concentration of pollutants is relatively high with large amount of water and produces big hazards to the environment. The article introduces the general situations of technical transformations, and compares the removal effects...

Atmospheric boundary layer is the conveying channel of the earth's atmospheric momentum, heat, and all kinds of material. The main characteristic of the fluid motion in the atmospheric boundary layer is the turbulence, and the wind speed of atmospheric boundary layer increases with the increase of height,...

Based on the wave transfer matrix method, wave localization in a disordered periodic viaduct undergoing in plane vibration is investigated according to the Wolf’s algorithm in this paper. With the proposed model, the influences of the pier-height and beam-length disorders on the wave localization are...

According to the characteristics of the corresponding rigid points in the actual force signal, the background and characteristics of signal analysis are described in this paper for the purpose of obtaining this feature point and the extraction and calculation of the moment of the force signal is realized,...

Many quantum communication protocols involve multiple participants. With participants increasing, selecting designated legal participants in a nice way becomes more and more significant. In this paper, we develop a quantum route selection approach to the design of participant selection. Graph state is...

In this paper, we investigate the problem to compute the largest number of red nodes in red-black trees in red-black trees. We first present a dynamic programming solution for computing r(n) , the largest number of red internal nodes in a red-black tree on n keys in O(n2 log n) time. Then the algorithm...

The reinforced concrete tank in water supply system is a typical fluid-filled structure. There are liquid-solid couple effects and liquid sloshing in the fluid-filled structure under seismic actions. The existence of liquid storage changes the dynamic characteristics and seismic responses of the structure....

The proportional-integral-derivative control (PID) is the most popular approach in industry and commerce, due to its simplicity, low cost and effectiveness. Unmanned aerial vehicles (UAVs) have been used widely nowadays, focusing on agriculture, recues and other fields. Quadrotors have nonlinear and...

The forecasting method of future values of a time series from current and past values is of considerable practical interest and in important areas of application. In addition to calculating the best forecasts, it is also necessary to specify their accuracy, so that the risks associated with decisions...

In order to improve the flexibility and make energy transmissing between power system and distributed generators more efficient, a double-input single-output DC-DC converter based on the topology of push-pull modular multilevel DC converter is presented in this paper. First, it selects the topology structure...

n Chinese information field of engineering construction, the traditional information management is on the function-oriented and data-oriented base, and cannot provide comprehensive and complete process-oriented support in the process management. There is a big gap especially in the information integration...

CuO nanoparticles (NPs) are widely used in commercial applications. With increasing CuO NPs production, CuO NPs are likely to present in the environment and pose a potential threaten to ecosystem. In this work, 20 and 50 mg/L CuO NPs and 0.15 mg/L Cu2+ were used to test the toxicity to Arabidopsis thaliana...

Focused on the availability of command information system, the availability model of command information system is constructed from capability, business function, application process and application object firstly. Secondly, the availability index of command information system is established in principle....

Radio Frequency Identification (RFID) is an advanced technology, which can be applied to automatic data identification, acquisition and distribution. When utilized in power grid logistics management, this technology will assist to improve the logistics management efficiency. However, RFID hasn’t been...

As Android games plays a big role in humans' daily amuse activity, the rapid growth of mobile games has led to the constant development and update which have resulted to the heavy loan of testing. Unity is one of the most popular game engines that establish a more effective rendering of game scene. In...

In order to make the intelligent materials have a new development in the field of Mechanical Engineering, composition of intelligence materials is briefly introduced in this article; Design thought of intelligent materials are detailed analyzed; Main functions of the intelligent materials was described;...

Most of the historic environment is landscape dependent, the landscape space scale is pleasant, the sight is open, the form is beautiful, and full of vitality.The growth of the space depends on a combination of law of the landscape space[1].The location of some ancient cities and towns is often within...

The types of internal fault and their influencing factors in GIS are analyzed. The key technologies and researching results of UHF, ultrasound and SF6 decomposition method on site for GIS internal fault detecting are presented, compared with each other and analyzed. The methods of fault location and...

Communication records are personal privacy, while the reasonable use of communication records can combat crime and protect the interests of citizens. This paper tries to find a balance between the two and predict the occurrence of criminal activities with the least communication records. A method is...

The article takes integrated visualization of IoT (Internet of Things) monitoring data and friendly user interaction as research objects, relying on the IoT platform aggregated by lightweight business, to research on how to turn the heterogeneous data collected from various sensors to synthetic situation...

The existing photo thermal training equipment in vocational education is usual a simulative system that cannot support practical training exercises. As well as, different photo-thermal technologies cannot comprehensively integrated for study. To solve these defects, this paper puts forward a comprehensive...

Line losses are needed to be calculated before overhead transmission lines put into operation, and meanwhile AC resistance of wires determines its resistive losses and transmission capacity. In this paper, we compared several commonly used methods of AC resistance, obtain their advantages and disadvantages,...

A new application of high resolution continuum source flame atomic absorption spectrometry has been developed for the determination of Ca, Fe, Zn and Mn in chicken feed. Under the selected determination conditions, the correlation coefficients better than 0.998, the relative standard deviations less...

Separating radioactive wastewater by using high gradient magnetic separator is one of the new technologies. In this paper, using FLUENT software for simulation, effects of the flow rate, magnetic particle size, intensity of magnetic field, and magnetic media filling rate on adsorption was figured out,...

Alpinia officinarum Hance, one of the local herbs in Guangdong, has the rich content of flavonoids and is one of the most commonly used traditional Chinese medicines for the treatment of gastrointestinal tract regulation, smooth muscle spasmolysis, immunoloregulation, antioxygen, tumors, diarrhea, and...

The existing attack detection methods cannot extract attack of industrial control system(ICS) correctly. In the view of that, we analyze the characteristics of ICS and proposes an attack detection method of ICS based on multi-dimension abnormities. First of all, we divide hosts into multiple dimensions...

When domestic wastewater was treated by biological contact oxidation on soft packer and Bio-Filter process, the removal effects of COD/TN/NH3-N and TP were discussed at different C/N and loading in the paper. Further more the combined processing of biological contact oxidation and Bio-Filter were studied....

The value of geopark include natural value, ecological value, scientific value, cultural value, tourism value and location value, which can be further divided into core layer of natural and ecological value, intermediate layer of scientific and cultural value, and peripheral layer of tourism and location...

A new terminal sliding mode control of MIMO linear time delay system is proposed in this paper. By inserting a time delay term in sliding mode, a new terminal sliding mode is developed for MIMO linear time delay systems. A terminal sliding mode controller is designed to drive the system state variables...

As the trend of economic globalization is continuously enhanced, product faces more and more market competitions. In order to survive and development, product has to push out the product that meet the requirements of market with quicker speed(time to market), higher quality, lower cost and better service....

By using the Floquet transform method and based on the periodic structure’s theory, a theoretical model has been developed to determine the dynamic response of the periodic viaduct accounted for the non-uniform seismic excitations at different piers of the viaduct in this study. Numerical results show...

The sludge discharge model in wastewater biochemical treatment is highly nonlinear,Accurate prediction of sludge discharge will provide basic data for the precise control of subsequent sludge dewatering process In the research based on this method, due to the relevance vector machine(RVM) has high sparseness...

This paper presents a qualitative theory for faults diagnosis. We extend Reiter's [1] theory to deal with the dynamic and continuous systems and offer a necessary assumption and the corresponding propositions. Then we propose an algorithm of detection of faults and extend it to the multi-faults case....

Electrical vehicle has low emissions, high efficiency and other merits. In this paper, an efficient charging device program based on constant current-constant voltage charging, PFC, and Dual Closed-Loop control is proposed. Firstly, at the beginning of the charging stage, constant current charging method...

in this paper, the simulation method based on AMESim for the common fault of hydraulic system is discussed, two most basic fault simulation methods are summarized, namely parameter setting method and additional element method, and the detailed analysis of each method is given. At last these two methods...

In this paper, based on the classic SIR epidemiological model, we consider introducing hybrid immunization strategy including targeted immunization and acquaintance immunization to research on the proportion of infected nodes when the spreading of disease ends and the time steps of disease spreading....

Particulate pollution is a major kind of atmospheric pollution. The fine particles are seriously harmful to human health and environment. Acoustic agglomeration has been proved as a promising pretreatment to control the emission of fine particles. Based on the acoustic agglomeration, this paper investigates...

In this paper, the effects of reduction temperature and carbon content on the preparation of silicon-aluminum alloy by carbothermal reduction coal fly ash were studied. The reduction products were characterized by XRD. The results showed that when carbon content was 1.15 or 1.3 times and reduction temperature...

A form of additive manufacturing named selective laser melting (SLM) involves a laser to melt and fuse metallic powders together layer by layer to produce solid parts. In SLM, a number of variables, including laser power, scan speed, layer thickness, and hatch spacing, can influence the final product's...

Surface modification of nanoparticles is a new technology, it refers to the use of physical, chemical and other methods to deal with surface of the nanoparticles. Research objective of this paper is surface modification methods and applications. All analysis is based on the need of use, change the structure...

Point supported glass curtain wall to show the permeability and integration structures inside and outside space, fully embodies the glass support system and the physical space of the artistic charm, but in appearance, but also brought great security risk. By analyzing the way the two-point supported...

Energy is one of the energy used in the form of human life. Provide electricity power system includes a number of electrical equipment, part of the equipment in case of failure, will endanger the security of the entire power system. According to the statistical analysis, the power system more than 60%...

With the development of the communication network, the cognitive radio becomes good enough to provide the reliable spectrum resources and reliable communications for the secondary users (SUs). This paper considers improving a computer network protocol and then utilizing this computer protocol for secondary...

At present, the traditional interactive mode is mainly used for geometric modeling software.In order to improve the efficiency of modeling, a voice-assisted geometric modeling system is built. The technologies used in the system are speech recognition technology, Extensible Markup Language (XML) technology...

Induction motors have an important role and have long been the most widely used components in various industrial applications. To preserve, proper care and maintenance are required. So far, regularly recording vibration values on electric motors to detect potential problems early has become an important...

Based on the acquisition of a distance education website user access behavior data, the paper analyzed two diversion indicators, PV and UV, and several sticky indicators that reflect video on demand and live streaming browsing. By the data analysis, the paper found the change regulation of the PV, the...

The relation of the density of Noctiluca scintillans and environmental factors was studied. The grey incidence and relational degree of reference sequence and several comparison series were estimated. The results indicated that zooplanktons, Active phosphate Chemical oxygen demand(COD) were the important...

This paper presents a frequency estimator based on carrier detection scheme and MUSIC algorithm which can be used for a BPSK direct sequences spread spectrum signals systems . Under non-cooperative circumstance, the nonlinear carrier detection method is used to detect the presence of DS signal, and it...

The rapid progress of urbanization in China will be an important event that will affect the economic and social development of China and the world. The development of low-carbon eco city should study the low carbon eco city development strategy, determine the development of low-carbon eco city, follow...

Construction process reengineering (CPR) is used to reengineer the construction process of engineering project by using the thought and method of business process reengineering (BPR) to improve the efficiency of engineering construction. CPR theory provides improvement direction for construction project...

The shunt capacitor is a very important part of the EHV (Extra High Voltage) transmission system in China. Shunt capacitors can compensate reactive power and improve the power quality. It plays an important role in the regulations of voltages and power factors. At the same time, high repairing rates...

In this study, to illustrate the energy conversion characteristics of air-powered hydraulic vehicle, dimensionless mathematical model of the working process is set up. Then the dynamic power and efficiency are researched based on the dimensionless parameter simulation. This research can be referred to...

Nowadays, as a useful tool, the laptop is commonly used in our daily life. However, due to the poor heat dispersion capability, the working efficiency of the laptop has been decreased a lot. In order to solve this problem, many users tend to purchase an extra radiator for the laptop, which is a waste...

During the concrete pouring process, the long downtime would weaken the bonding strength between old and new concrete layers. The bonding parts would like to form horizontal cracks, especially winter intermittent surface in the severe cold region, of which cracks would easily propagates from surface...

As an important transportation tool of earth stone, mining truck withstand the impact of complex alternating dynamic load. Suspension as a connection of frame and axle, reduce the impact effectively. The double arm independent suspension was regarded as the research object in this paper, and analyzed...

Accurate power network data is the basis of grid security check. The plan data adjustment in different dispatching center influences each other. Regional balance was used in security check, based on fixed tie-line schedule, however, the influence of different dispatching center is ignored and power flow...

The paper designs and researches the modular design method of diesel crankshaft based on the research status of the Sach-Merkleisten management technology through analyzing the modular design. On the basis of the crankshaft product and geometry analysis, the crankshaft module division and module creation...

This paper focuses on the major influencing factors about the use of the Massive Online Open Courses (MOOCs). It is promoted by the top universities domestic and overseas. Under the background of big data, MOOC develops rapidly, but its development is not smooth, especially the users’ practical application....

China is one of the largest fluorescent lamps consuming and producing countries in the world. However, there are few studies evaluating environmental impacts of fluorescent lamps in China. This study compared the environmental impacts of two lighting systems in China – compact fluorescent lamps and linear...

The effects of nitrogen (N) and potassium (K) fertilizers on fruit qualities of blueberry 'Legacy' were studied. A field experiment was conducted using randomized block design. The results showed that the fruit weight and total soluble solids content of blueberry were significantly increased by fertilizations....

In this paper, we investigate the dynamics of an inverted pendulum with two concentrated masses. The perturbation method is used to find the transition curves. We emphasize the difference between the case of two concentrated masses and that of one concentrated mass. Numerical simulations are carried...

According to the data we have consulted, we can come to the conclusion that there are five kinds of commonly used methods to get rid of space junk, respectively Laser Removal Technology, Satellite Debris Collector, Space Garbage Truck, Suicide Satellite and Resistance-increase Device. Their respective...

This paper discusses an automatic control experiment box applied to engineering education and competition trainings. Based on the analysis about common functions of robots, this paper generalizes four modules: control circuit module, mechanical action module, acoustooptic display module and information...

This paper presents the process of qualitative multi-faults diagnosis. We propose a new diagnostic process for continuous and dynamic system and its corresponding consistency-checking module. The STRIPS language is used to generate the system model since it integrates the cause-effect information required...

the improvement of the condition of our country's economy and the development of urban and rural areas as a whole,The rural biogas construction also presents the diversified development trend.This paper introduces the hebei qingxian county straw partnerships biogas application status,For straw partnerships...

Direct starting method of asynchronous motor does a lot harm such as current surge and mechanical shock, etc . In order to reduce the harmful influence of direct starting method and improve the starting performance of asynchronous motor, a scheme of asynchronous motor soft starting system based on antiparallel...

A constant force tool system for the abrasive belt grinding and polishing was developed in the paper. With the addition of the constant force control during the finishing of curved surfaces, the accuracy and the surface roughness could be improved. The constant force tool system would be used on the...

To improve the reliability of airfield lighting, a new method based on wireless sensor networks is put forward. As the energy consumption of the sensor node determines the lifetime of the WSNs, the key problem of WSNs is designing a low-energy sensor node and adopting low-energy routing protocol. According...

Soil environment is one of main influence factors for buried pipeline corrosion. In order to improve soil corrosion environment, some physical and chemical methods are available. The aim of this work is to evaluate validities of two kinds of chemical reagents for improving soil corrosion environment...

When Digital Video image transformation from general screen (i.e., 4:3, etc.) to widescreen (i.e., 16:9, etc.), the source image aspect ratio will change, image resolution adjustment and format conversion is difficult. In this paper, a method of nonlinear scaling is proposed, aim to overcome the image...

Low utilization rate of transport vehicle for prefabricated construction (PC) components is one important reason of the high transportation cost. On the basis of analyzing the geometrical characteristics of PC components and installation sequence, the vehicle load capability and principles are taken...

The focus of this paper is to develop a transmission and reflection matrices (TRM) method for 3-D layered poroelastic half-space subjected to moving load. Applying the triple Fourier transformation, the general solution for the displacements, stress and pore pressure are derived from the governing equations...

This paper took certain a landslide in Sichuan province as a research object and focused on characteristics of groundwater flow and stability of the landslide with changes of conditions. Three-dimensional conceptual model was established for groundwater flow in the landslide with weak permeable media....

The ever increasing complexity of avionics system and amount of platform devices makes allocating the IMA resources more error-prone and harder to evaluate. This paper proposes a method of preliminary design of IMA platform based on models. The definition of system and platform respectively bases on...

Biodegradation of pyrene and indeno(1,2,3-cd)pyrene in reed rhizosphere soil was carried out in a small-scale wetland simulator using reed as well as microorganisms immobilized on cinder beads under natural environmental conditions. The results show that the stability of the introduced strains was enhanced...

The rapid development of power system communication enables Power Communication network communication devices become more complex, more and more communication lines, which give the communication resource management, especially resource management circuit has posed a serious challenge. This article also...

Throughout the development process of the water quality evaluation method, the paper outlines several water quality evaluation methods, summarizes them and points out the advantages and disadvantages. Finally the paper points out that water quality evaluation method will be further improved with the...

The level exchanging buffer of large erecting hydraulic cylinder is one of the core issues in the process of rapid erecting equipment development. This paper combines the actual, building analysis platform of fluid-structure interaction by using fluent and workbench,researching the effect of the change...

The granular computing is a methodology aiming at simulating the process and structure of the human cognition in the world. A new promising clustering algorithm, the density peak clustering (DPC) was proposed recently, which whereas, just takes procedures at a single granularity and could be conditionally...

Carrier Sense Multiple Access (CSMA) is a very important network communication protocol. According to the different ways of service agreement can be divided into: No-Persistent CSMA, 1-Persistent CSMA, P- Persistent CSMA. Although these protocols can improve the system throughput, but there are also...

To improve the air environment of the ship's medical cabin, A series of experiments and numerical stimulations were carried for the research on the medical cabin's indoor air quality. By changing the opening rate, the different schemes of the full orifice air supply and the partial orifice air supply...

With the development of technology, unmanned aerial vehicles (UAVs) are increasingly utilized in civil applications. Several provinces and cities in China are vigorously developing the low-altitude economy, with industrial environments gradually maturing. However, traditional A-star algorithms produce...