Advances in Engineering Research

This paper briefly introduces measurement principles of Nondispersive Infrared (NDIR) carbon dioxide (CO2) sensors as well as summarizes performance characteristics of NDIR CO2 sensors, factors affecting the accuracy, calibration methods, market situations and trend of NDIR CO2 sensors.

By analysing the vibration response of two mutual coupling structures between three basic elements ‘spring, damper and inerter’ on a single degree of freedom system. Focusing on the vibration isolation effect, the optimum coupling relationship of ‘spring, damper and inerter’ three basic components applied...

Based on the analysis of the frequency modulation capability of conventional wind turbines and wind turbines, this paper proposes a new type of frequency control strategy for wind farms, which is based on the layered architecture. By means of reserve control, it can provide fast active power support...

Skeleton-dense cement treated stone (STCB) may occur segregation; a laboratory test was carried out to study a specific segregation which could be named migration temporarily in this paper. Two kinds of STCB were tested, two impact factors were identified, and the influence of migration on mechanical...

Large-sized flexible structure is widely used in industrial production areas, such as aircrafts, automobiles, ships and so on. There will be dynamic deformation in working process which will affect the normal use of structure carrier. In addition, current deformation measurement methods have certain...

Necessity, history, actuality, problems and countermeasures, industrial application prospect of seawater used as cycling cooling water are analysed. When seawater is used as cycling cooling water, waste water discharge quantity and intake quantity of water are small, engineering investment and operation...

The polycarbonate screw cap part had cracking problem during storage, which mechanism needed to be studied. The effect of environmental atmosphere and stress-loading storage on the intrinsic stress and its distribution in polycarbonate screw cap part was investigated in the paper. The analytical results...

In this study, four laboratory-scale horizontal subsurface flow constructed wetlands (HSSF CWs) were designed to reveal the effects of cattail fermentation broth and Typha latifolia on nitrate removal. The results showed that both the addition of cattail fermentation broth and the presence of Typha latifolia...

This paper introduced the importance and workflow of Chinese web page classification. It studied the defects of chi-square statistic algorithm and improved it. At last, it verified the improved chi-square statistic algorithm combined with Bayes algorithm through a series of experiments. The experimental...

The problem of scheduling jobs with sizes on batch machines is considered. Each machine can process several jobs as a batch simultaneously as long as the total size of these jobs does not exceed the capacity of the machine. The processing time of a batch is defined to be the longest processing time of...

As a long-range precision guided high-tech weaponry, the cruise missiles have the advantages of strong penetration prevention capability, diversification of tactical use, and economical efficiency etc. After the Gulf War, many countries competed for research and develop the cruise missile. In this paper,...

Analysis of simulation data is purposefully collected data and analyze data, make this information or knowledge of the process is conducted in order to better understand and improve the system, is the focus of simulation problems. Due to existing simulation and data analysis methods, lacking to deal...

Common spatial pattern (CSP) is a popular method for 2-class motor imagery electroencephalogram (EEG) classification. Filter bank common spatial pattern (FBCSP) is an improved version of CSP by introducing multiple frequency filters and a stage of feature selection. In FBCSP, methods for the feature...

Exsiting indoor localization approaches have poor accuracy because of multipath effect. In this work, we utilize Perpendicular Intersection(PI) means, establishing the model o f multipath effect on signal propagation . The results show that multipath effect can be overcomed by PI and high accuracy is...

The basic properties, composition, and structure of four base bitumens: A1, A2, A3, and A4 were analysed. The stability of emulsified asphalt was investigated by means of residue content difference tests. The relationships between the stability of emulsified asphalt and the chemical compositions of the...

It takes distinguishing the two beveloid tooth surface as starting point and compares the differences of tooth profile from some aspects, such as forming process, sectional profile and the shape of the contact line. According to the tilting processing principles of the rack cutter and slotting cutter,...

Steer-by-wire is the latest technology in vehicle steering system. This paper reviews the domestic and foreign development of steer-by-wire steering system. The structure ,characteristics and working principle of the steer-by- wire steering system were analyzed in detail. At last, the solutions that...

Soft ground passing ability is an important indicator of vehicle maneuvering performance,in this paper,the vehicle characteristic parameters and soil parameters that affect vehicle passing ability,are analyzed,and the vehicle soft ground passing model is established.Some multi axle vehicle passing ability...

The thesis obtains the data with the help of Kinect, combined with the platform of unity3D to research 3D virtual fitting. Using the stroke and a matching algorithm of hidden Markov chain model to establish the corresponding relationship between contour of the human body and the human body model. It...

Multiporous CuCo2O4 microspheres have been synthesized via a facile solvothermal method and used as bifunctional electrocatalysts for rechargeable Li-O2 batteries. The Li-O2 battery utilizing CuCo2O4 shows a higher specific capacity of 5607 mAh g-1 than that with pure Ketjen black (KB). Moreover, the...

In this paper, a calculation model of 491Q gasoline engine working process was established using the engine one-dimensional simulation software BOOST, and through the analysis on the curve of pressure fluctuation in the front of the inlet valve at the speeds, the relationship between the late closed...

Based on the theory of fluid network, the mathematical model of the self-excited oscillation pulsed water jet device was established, theory analyses the frequency characteristic of self-excited pulsed water jet nozzle on double chambers. The result shows that structural parameters greatly affect natural...

A fixed-pitch wind turbine power performance improvement technology was studied in order to solve the problem that the actual output of fixed-pitch wind turbines is lower than the rated output in the plateau areas. Considering with the environmental characteristics in plateau areas, one blade-adding...

This paper discusses the uncertain portfolio selection problem when security returns are hard to be well reflected by historical data. In portfolio selection, risk analysis is one of the most important topics and research on quantitative definition of risk remains core of the topic. A new risk measure...

Hand gesture recognition is an important topic in the field of computer vision, it has a wide range of applications, such as interactive games and sign language recognition, etc.. With the launch of the depth sensor, the task of hand gesture recognition becomes more simple. In recent years, there are...

Power transformers are key components in the stable operation of electric power system. Reasonable arrangements of maintenance strategy according to transformers’ working condition can decrease the loss lead by transformers’ faults. The dissolved gas analysis (DGA) is the widest technique used in transformers’...

Modular self-reconfigurable robotic system has been presented for more than 20 years. We will review the development of the system in this article. There are many categories of the system. Each category is introduced in detail in this article, and typical examples of each categories will be presented....

Reducing the energy consumption of villages and towns and raising their energy efficiency is one of the priorities for the development of sustainable buildings in China. This article takes the village and township houses in hot summer and cold winter zone as the research object. Based on the analysis...

Steel samples under different pulse magnetic field are produced using self-developed pulsed magnetic field generator, and the discharge voltage of the pulsed magnetic field selected from the experiment is 0V, 40V, 80V, and 100V four gradient levels. The morphology of the microstructure is photographed...

In view of actual requirements for livestock and poultry breeding environment monitoring, an environmental monitoring system based on Internet of Animal Husbandry Things (IoAHT) was introduced in this paper. The environmental monitoring system includes environmental monitoring station, information management...

With the development of the modern society, new energy technology has a great potential to be the new driving force. In order to make full use of the wind energy in the high air, based on CFD method, using the commercial software FLUENT and the standard k- turbulence model, an axial-flow wind turbine...

Urban redevelopment is a very controversial topic in China, meanwhile is also the trend that social and economic development continue to promote. Three main bodies are concerned in the reconstruction of old city, including local government, the estate developer and local residents. Because of the phenomenon...

The test of the heavy vehicles is depended on the experience, and is lack of quantitative citation index. This paper introduces the research of the oil spectroscopic analyzer for power transmission systems on different roads. The wear of impact factors of different road to power transmission systems...

This study focused on electrolysis of refractory malachite green waste water with three-dimensional electrode. In this research, high-purity graphite was used as the cathode, titanium-plating metal mesh as the anode, while coal column, coconut shell granular activated carbon and catalytic Titanium dioxide...

According to the morphing requirements, this article proposes a morphing glide aircraft with high environmental adaptability. Based on Kane’s Method, six degree-of freedom dynamic model is built. The automatic disturbance rejection control technology is adopted to realize stability control of longitudinal...

Tornado always exists like funnel shaped, In this paper, according to the basic principles of tornado to establish a physical model of tornado. According to this model, a tornado of angular velocity, density and the spin turn radius in air layer parameterized description. Based on this model, the relationship...

Using natural dye Ginkgo leaves as raw materials, the dye liquid was extracted by microwave method, water bath method and ultrasonic extraction method, and the suck photometric of this three extraction liquid were tested. The 25 tex cannabis/mulberry fiber/wool 60/20/20 blended yarn was dyed by the extracted...

The diversity and complexity of large public buildings, our country's local climate, economy, life habits variation result in a lack of basic data to support energy-saving operation standard, energy saving technology for the reconstruction of the applicability and the lack of practical test, which leads...

Deforming process of FS (flexible spine) tooth is studied, its bending deformation and shear deformation are analyzed, and stiffness expression is concluded when FS tooth meshes into completely. FS cylinder torsional stiffness is analyzed with theoretical calculation and finite element analysis, the...

The formation energy, electronic structure, density of states and optical properties of ZnO doped by Mg in substitutional and interstitial positions are studied. It is found that the band gap of ZnO is enlarged by doping Mg in the substitutional position, and the ZnO doped by interstitial Mg becomes...

According to the maximum hollow circle strategy of the Voronoi diagram, Starting from the basic principles for equipment allocation of the chemical reconnaissance system, the capability range of the three kinds of chemical reconnaissance nodes is determined by the ideal model of chemical reconnaissance...

This paper proposed the design idea and the development of an online curriculum system based on the Browser/Server architecture from the perspectives of system analysis and design. This system can efficiently manage and update the teaching contents. To solve the difficulty traditional online curriculum...

The Cu2-xSe nanopowder was synthesized by the hydrothermal method. The electrical transport properties of Bi1.975Na0.025Ba2Co2Oy + xwt% Cu2Se (x = 0.00, 0.25, 0.50, 0.75, 1.00, 1.25, and 1.50) ceramic samples prepared by the solid-state reaction method were investigated from 300 K to 898 K. The Cu2-xSe...

With the development of China's transportation industry and the construction of traffic tunnels, tunnel disaster prevention has become an increasingly important research topic. In this paper, we compared the two kinds of smoke prevention modes in the vertical tunnel with the vertical ventilation and...

A new method to identify voltage sag sources in power distribution network with harmonic is proposed, this method use the theory of EMD to decompose the voltage signals, and obtain a series of IMF. For different voltage sag sources, the IMF's complexities are not the same, so the concept of the EMD energy...

In this paper, a method based on the nolinear Granger causality is used to analyze epilptic EEG and ECG signal. Polynomial kernel function, Gaussian kernel function and sigmoid kernel function are used to map the linear data in low dimensional input space into high dimensional feature space .In this...

The physical model of the bathtub is established in this paper, and by using the differential theory of the water in the bathtub is regarded as the superposition of different temperature of the water layer, secondly, analysis of water bath heat dissipation form mainly has three kinds: the heat conduction...

To enhance the bus operation stability is the key to improve bus service. Traditional evaluation of the bus operation stability always relies on the whole line, the stability of the bus operation at the stops can not be reflected. Besides, traditional evaluation of the bus operation stability drawing...

With the raised performance of advanced aircraft, hypersonic vehicles are subjected to increasingly severe environment. Very severe elevated temperature and high intensity acoustic loads will cause the thin-walled structures of aircraft to respond in a strong nonlinear large deflection vibration, and...

Cane sugar crystallization, which has both heat and mass transfer, is a very complex chemical and physical process. Due to the constraints of technical conditions, detection of crystals is mainly relied on artificial methods with disadvantages of low accuracy and subjective judgment errors. Application...

In this study, CrTiAlN and CrAlN coatings were deposited on the surfaces of M2 high speed steel (HSS) substrates. High temperature ball-on-disc tribometer was used to test the tribological properties of the coatings. The results showed that the surface micro-morphology of CrTiAlN and CrAlN presented...

Network security situation prediction based on historical data is to provide warning in advance with network administrator. However, the current proposed approaches ignores the fact that the original time series of security situation include the random component which is not able to be forecast. Singular...

In this paper, the large finite element analysis software - ANSYS is used to create the model of bridge-crane frame structure. Using ANSYS, we established bridge-crane frame structure of finite element model. Creates the stress and stiffness analysis under different conditions using the ANSYS models...

Compared with the traditional teaching methods, teaching by using multimedia technology is unable to be replaced by other teaching methods, and it also provides wider scope and prospect for mandarin teaching. Therefore, the paper discusses the application and role of multimedia technology in mandarin...

Carbide tools were used to investigate the cutting temperature when heavy milling 6N01-T5 aluminum thin-walled hollow W-shape structures. The results showed that the value of cutting temperature at the area of weld seam or the intersectant ribbed slab was 40-60% times higher than that of cutting the...

In this paper, a method of analysis attention state based on the time series transformed by the improved k nearest neighbour network is proposed. In the proposed method, counting number state EEG signals and closing eyes state EEG signals are constructed into networks by the improved k nearest neighbour...

The paper presents a new type of remote fault diagnosis system of electric locomotive, which aiming at the problems and defects of traditional fault diagnosis technology of electric locomotive. The new system links electric locomotive host with ground repair center by using the mature 4G wireless communication...

This article related to industrial engineering theory in enterprise production management, by way of example describes the basic idea of the method a company truck assembly line balance improvement. Combined with the practical problems in production line system analysis, and put forward the feasible...

Vibration tests on a diesel engine were done in the idling condition, and through the analysis of the test data, the faulty part was determined. Due to the vibration transfer characteristics, the vibration characteristics of the engine oil pump body were analyzed, and the fault related to the oil pump...

Through years of calculus teaching, we found that the students in learning the universal existence question, that is, apply the principle and theory of problem solving, tend to ignore laws and theorems, resulting in incorrect solutions, the author try to this class of problems, summed up, remind students...

Direct load control is one of the key technologies in demand response. Moreover, the security of control instruction and credibility of customers must be preserved in direct load control. Non-intrusive load control was used to simplify the process of customer credibility verification. A privacy-preserving...

In this research, a two-dimension physical model experiment was conducted, which studied the wave force characteristics on steel pipe pile under three different construction stages. The experiment results show that the single pile horizontal force maximum and sub-maximum and total horizontal force maximum...

The aging is a main factor which could influence the rubber damper’s properties of isolating vibration. In this paper, a kind of dampers which was managed under different aging environments were treated as the test structures. The dampers’ property of isolating vibration was studied by experiment. The...

In order to solve the problem of high classifying error in the process of bill fibers extraction, an improved method is proposed for bill fibers extraction based on global statistic decision and local adaptive segmentation. First, locates the suspicious fibers regions in the H, S color space of the global...

To solve the problem of that the existing sound insulation window cannot control the low-medium frequency noise effectively, active and passive noise control technologies are used in the internal and external staggered open channel to broaden the noise reduction frequency range of the existing sound...

Cloud computing as a novel technique which aims to analyze and operate big data and complex computing is playing a significant role in daily life. One important function it holds is the ability of sharing resources that include infrastructures, software, applications, and business processes. Virtualization...

Garment industry development causes increasing competition, the traditional manual cutting has been unable to meet market demand, NC formation becomes the inevitable trend. In this paper, a king of garment tailoring machine control system is designed based on Trio motion controller, the hardware and...

User experience of safety facility is very important, and good experience helps users save themselves better and faster from dangerous situation. To improve user experience of using safety facilities, potential user needs and their psychological states should be focused in design. In this research, fire...

In order to increase the hardware resource utilization of the distributed cluster system, this paper, in combination with network virtualization technology, will put forward a private cloud platform implementation scheme based on a variety of flamework techniques. The scheme can focus the underlying...

This paper studied the epilepsy signal in different frequency bands based on the average phase-synchronization time matrix (APSTM). APSTM algorithm can probe the change in the synchrony of the underlying system with high sensitivity, and be applied to multichannel, nonlinear time series in noisy. This...

Although the Intergovernmental Panel on Climate Change (IPCC) suggests that the net damage costs of climate change towards countries are likely to be significant, it remains a challenge in evaluating a country’s fragility and measuring the impact of climate change, in a less-subjective manner, since...

Bidirectional Reflectance Distribution Function (BRDF) and Bidirectional Texture Function (BTF) are two major methods used to describe the reflectance of light at a surface under different illuminations and different views. However, due to a large number of measurement data, an efficient compression...

Objective: to solve cultivation equipment problems for industrial cultivation of sprout, sprout aeroponics equipment that features vertical cultivation, aeroponics, ozone sterilization, water magnetization, automatic control technology and etc., is designed in this paper. Methods: SolidWorks 3D design...

In order to study the influence of fat layer and environment temperature on the amount of energy lost. We take the natural convection and thermal radiation into account. At this point, the heat transfer of skin surface natural convection and radiation is equal to the sum of internal heat conduction....

In order to study the seismic behavior of SRC-RC transfer column under low-cycle loading, the open source finite element software OpenSEES was used to establish models of SRC-RC transfer column based on fiber model and conduct numerical analysis. Compared with experimental results, numerical analysis...

To improve the quality and efficiency of road roller, Vibratory Roller online monitoring test system of machinery based on LabVIEW is designed. The integrated structure and function of the system are introduced briefly, and the discussion of LabVIEW software design is focused on. The compaction is corresponding...

Based on the safety operation requirements of petroleum special vehicles, a type of multifunctional virtual real-time general observation system is developed on the in-depth study of the well testing principle, on the in-depth study of the well testing principle, which can measure pulling force, tension...

The feasibility of a modified formula for seismic hydrodynamic pressure on pier in deep water in design of highway bridges is discussed in this paper. Several recent results of dynamic response analyses of bridge piers in deep water by various approaches are compared with the values from the formula...

In this paper, the bracket of certain electric equipment was designed by considering the vibration and shock environment. According to the design requirement of vibration and shock, the stiffness of the isolator was set as the design variable. The mathematic optimal model of getting the largest stiffness...

Based on the MapReduce job scheduling technology for design reference, this paper has put forward the maximum satisfaction scheduling algorithm of Hadoop to effectively solve the scheduling problems in MapReduce. The algorithm has tried to modify the original algorithm of Hadoop, configure a satisfaction...

Epilepsy is caused by abnormal synchronous discharge of neurons in the brain, which is the main basis for the diagnosis of epilepsy. Use of complexity theory to study the epileptic signal has become a hot spot. The symbolic transfer entropy can be used as a characteristic of epilepsy playing an increasingly...

Improvement of the level of industrialization accelerates the development of logistics automation technology. The application of palletizing robot is becoming more and more, its flexibility is improving continuously. In this paper, the palletizing robot control system is designed based on trio motion...

In this paper, the static compression overall performance of molded pulp under different temperature were studied by experiments. The moisture content and elastic modulus of molded pulp materials , the static compression on molded pulp products were studied under the temperature of 5 C,23 C,40 C.And...

Focus variation is an optical contact-free method that allows the measurement of 3D surface metrology using optics with limited depths of field and vertical scanning. It was documented in the ISO 25178-6 for the first time in 2010. Based on this method, two categories of typical instruments are described...

As Studying of the current rule engine implementation mechanism, An XML format rules is put forward for the poor ability in the predicate expansion and the rule reuse of the traditional rule description, which can describe of the detail interface information called by entity class in rules, and the improved...

It is of great significance to understand the rule of soil infiltration to develop and better use of land resources or guide the agricultural irrigation. The grass infiltration apparatus is used to test the soil infiltration under different land uses, including grassland, woodland and vegetable land....

As we all know, solar energy resources is almost inexhaustible and the solar power generation technology is environmentally friendly. In this paper, we enumerate five Solar thermal power generation systems, include the solar parabolic focusing system, the central receiver or the solar tower focusing...

Wu Wei was the representative personage of Zhejiang painters. His lightsome ink and wild painting style attracted many people. He then became an unusual talent in painting history of Ming Dynasty. People who read Baqiao Bridge Snow Figure would feel rustle in the air at first, but then would find it...

The origin and simplification of formulas for seismic hydrodynamic pressure in the existing guidelines for seismic design of highway bridges of China is reviewed. Five differences from Japanese specifications that is Chinese guidelines come from, are pointed out. A suggestion to modify the formulas is...

To improve the anti-rollover capability of vehicles under limit conditions, the rollover stability of vehicles in high speed steering was studied; a vehicle dynamics model was built with the software of Carsim. Based on the variable threshold method of yaw rate, an anti-rollover controller was designed,...

The injection of wax pattern and the solidification of the metal are both essential procedures and having the major influences on the final dimensions. However, the main casting process steps and casting geometry affecting the dimensional shrinkage wasn’t quantitatively studied. In this study, dimensional...

The ranking system of granite grindability is very important for high-efficiency grinding key technology. A new method by the combination of Fuzzy Analytic Hierarchy Process (FAHP) method with TOPSIS methods is developed to establish the dependence function and fuzzy relationship. The grindability of...

Aiming at the issues about equipment deployment of chemical reconnaissance in systemic level, the modeling thinking of chemical reconnaissance system is studied based on the ability theory, the simulation and calculation for the equipment application of the specific action-oriented chemical reconnaissance...

The limit of one variable function is an important problem in Higher Mathematics, it is a basic method to study the relationship between the function of variables. This template describes some important method about counting the limit, and gives the solving skills.

To study the static and dynamic performances of lathe bed made of resin mineral composite, a series of finite element analysis by ANSYS Workbench for lathe beds made of cast iron and resin mineral composite are conducted respectively in this article. It is proved by the results acquired from the static...

The multi-walled carbon nanotubes combined with four polymers respectively were used as a sensitive layer of in the monolithically integrated gas sensor array. The multi-walled carbon nanotubes in the gas sensor array were added using a dip coating, and the corresponding polymer was added to different...

A kind of SAM film based on octadecylphosphonic acid was prepared on cast iron and steel substrates by the immersion method. The film was characteristiced by scanning electron microscope (SEM) wettability studies. The result showed that octadecylphosphonic acid formed compact hydrophobe film on the substrates...

With the rapid development of the machining industry, the machining process planning in machinery manufacturing occupies an important position affecting the machining quality. The governor speed control lever is one of the important parts of diesel engine governor. In this paper, we study on the difficulties...

In some special applications of industrial production and aerospace field, the liquid pipeline flow under the pressurized tank is a problem which should be concerned in the design and application of the closed media delivery system [1]. Design Modeler and Meshing module in Workbench is used to establish...

In order to quickly and accurately determine the location and extent of the instability of complex steel structures, the method has been proposed which is to build a full model based ANSYS finite element analysis software and mapping model based add momentum BP neural network to achieve predictive. The...