Search all articles

The daily 10.7-cm Solar Radio Flux (F10.7) data is a time series with highly volatile. The accurate prediction of F10.7 has a great significance in the fields of aerospace and meteorology. At present, the prediction of F10.7 is mainly carried out by linear models, nonlinear models, or a combination of...

This article is an overview of dependent personality disorder from its etiology, impacts, treatments, and recommendations for future research directions. Dependent personality disorder (DPD) is a personality disorder characterized by pervasive psychological dependence on others. At the beginning of the...

The normal section tooth profile of the hob basic rack is used creatively as the basic rack of the harmonic gear drive with double-circular-arc. Based on the clear selection methods of the basic rack tooth profile's main parameters, the optimization method and process of the basic rack tooth profile...

Based on the classical magnetic structure of the vehicle MRF damper, this paper mainly focuses on the influence of magnetic circuit structure and key parameters on response time of MRF damper, and put forward the optimization method of magnetic circuit structure, which adopted the double stage magnetic...

A hysteretic loop correction (HLC) model was established by introducing the position and shape correction factors of hysteretic loop in early study (International Journal of Pressure Vessels and Piping, 86 (2009) 616-621) based on the testing data of two Ni-based super alloys of FGH95 and GH4169. This...

In this paper, an improved bacteria foraging optimization algorithm based on different constraint conditions is proposed to solve the vehicle routing problem with pickup and delivery (VRPPD). At first, the mathematical model is established aiming at minimizing the dispatching time and the total cost....

This study numerical demonstrates the principle of parameter design of the two vertical source-receiver arrays system for separation of eigenrays in shallow water multipath environment. The two arrays performed transmission and reception of acoustic pulse signal repeatedly, and use a double beamforming...

In the present study, we describe an electrochemical sensor for codeine detection by using the DNA aptamers against codeine. In the sensing protocol, a dually-labeled DNA Aptamer probe was designed to be labeled at one end with HS, and at its another end with an dabcyl as an electrochemical tag to produce...

Selective biocatalytic synthesis is an important part of the third generation of biotechnology, is the forefront of international scientific and technological development. Utilizing enzyme catalyzed reaction, many complex substances can be synthesized. Biocatalysis have strict regional selectivity and...

For deep tunnels, their engineering geological and hydro-geological conditions are highly changeable and complex. Rough construction often triggers or produces accidents, such as water inrush, mud inrush, landslides etc. For informational dynamic design and construction of tunnels, it is of vital importance...

The advancement of digital technology is offering more and more possibility for the presenting of packaging designs. The maturing internet technology has managed to provide technical support for remote interactive experiences. Digital modeling and interactive virtual presentation of packaging products...

With the continuous improvement of the manufacturing level in the aerospace, automobile, shipbuilding and other fields, higher requirements for the assembly precision and speed of the components in the manufacturing process are raised. However, the manual operation method is generally adopted in the...

In this paper, reviewed some biodegradable polymer materials such as photodegradable polymeric materials, chemical synthesis polymer materials, microbial synthesis polymer materials, photo biodegradable polymeric materials and mixed type polymer materials. Points out the existing problems and the development...

At present, commonly used methods to identify Burgers model parameters have subjectivity shortcomings. This paper adopts 1stOpt software with unique nonlinear fitting function. The stress-strain-time equation can be obtained according to constitutive equation of Burgers model. Then four parameters of...

The drawing mold of Miniature Inner Grooved Copper Tubes (MIGCT) is made of WC-Co hard alloy, TiAlN coating is deposited on the substrate of WC-Co hard alloy. Inspections on binding force and hardness show that TiAlN coating is provided with fine surface finish and can meet the requirement of industrial...

Following many bottlenecks of the development of the logistics industry at present,a interactive model of cloud logistics is proposed in this paper.Describing the interactive model of cloud logistics by BPMN2.0 choreography,then the Pi calculus is adopted to make rigorous formal definition for the basic...

This paper aims to analyze why international institutions are inefficient in solving global challenges by illustrating three cases concerning Arctic protection, Covid-19, and climate change. The paper concludes that the reasons are (1) the conflict of interests between states and (2) the weakness of...

This paper discusses the concept and goal of future education, and believes that future education should be a learning ecosystem for all-round development. The paper analyzes the challenges facing education today, including the limitations of traditional learning models and the impact of technological...

With the development of China's science and technology and large-scale construction of infrastructure, put forward higher requirements to the highway pavement performance, modified asphalt is necessary. Aging is a problem of modified asphalt in use process cannot be ignored, which directly affects the...

By observing the descriptors of the contour points, correspondence based contour matching is widely used in pattern recognition. However, it is a pity that the correspondences established by descriptor matching are not reliably. In this paper, a matching approach, in which the inlier correspondences...

With the sustainable development of society and economy, people’s living standard is experiencing a steady improvement, a lot of urban domestic garbage has become a social problem which contaminates the environment and influences our life. Reasonable and effective solutions are both actively looked for...

Euphemism is a proper means of expression people use in communication and exchange which is hoped to make communication smooth and pleasant. Euphemism is both a common language phenomenon and a social cultural phenomenon, which has penetrated in people's daily life, reflecting the widespread social phenomena...

The evaluation system of the theater is based on user data, professional evaluation and audience comments, and we use web technology to build the system. In this paper, the framework, function and technical design of the evaluation system of the theatre are presented. Thebootstrap is used to buildthe...

The issues of bubble-size spectra estimation were researched using the bubble resonance theory and an iterative approximation, in order to further understanding the performance of the two approaches for determining bubble-size spectra, the estimation accuracy of four bubble-size spectra models have been...

As the subway as public transportation in major cities in China play an increasingly important role, the subway operation safety more and more get people's attention.Due to the particularity of subway operation environment and status, makes the subway foundation, especially the quality of the steel rail.The...

As traditional method mining for association rules between items in large and grand data sets is inefficient. In this paper we present an efficient method called BPMRA which is based on mapreduce and partition. We have compared BPMRA algorithm based multi-node and partition based single node method and...

Reaction time under different lighting source was obtained. The influence of luminance, contrast and eccentric angle on the reaction time were investigated. The relation between Lm and x were built using spectral luminous efficiency function V( ), the ratio of light flux of the photopic vision and scotopic...

This paper designed a high-temperature and high-pressure environment simulation device, and simulated the temperature and pressure environment for downhole instrument performance testing and calibration on the ground. The device can meet the low energy consumption, small control precision, easy removal...

In view of the problems in the teaching of engineering mechanics in our university, such as the unique teaching methods, the difficulty in mobilizing the learning initiative and lack of ability to apply knowledge analysis to solve problems, the blended teaching model based on micro-curriculum, problem-driven...

A new saliency detection algorithm based on image segmentation and color histogram is proposed. The saliency values of partitions are decided by the spatial location and color difference which is measured by the difference of same color pixel number between the regions. In order to enhance salient areas...

Firstly, we created the 3D model of crankshaft used HT-A150 engine in the tractor. Secondly, we cumulated the loads of the crankshaft when it was working at the most dangerous state. At last we conducted stress and strain simulations about the crankshaft manufactured by two sorts of materials by analysis...

With the rapid development of the railway passenger train in China, the safety of train operation has become the focus of attention. The railway passenger train due to narrow and limited space, more combustibles within the compartment and the passengers are highly concentrated, in the event of a fire...

With the acceleration of the process of industrial design, Computer-aided design software to be more widely used. At the same time, engineers thirst for speed is also growing strongly. In this article We analysis the OpenFOAM CFD software and detailed testing its performance on high-performance computers,...

Because of its own characteristics and the complexities of driving conditions, Tractor-Semitrailer easily produce shimmy when driving at the high speed. In order to effectively control the high-speed shimmy of Tractor-Semitrailer, differential braking control strategy based on sliding mode variable structure...

Along with German industry 4.0 and China makes 2025 wait planned implementation, Internet+, the thing unites a net, intelligence factory, the rise of the unmanned factory, being in conjunction with of various industrial robotses homework is foundation.Previously enter to make realm, intelligence's making...

In order to study the fire extinguishing performance of fixed water-mist fire extinguishing system in railway tunnel rescue station, a water-mist fire extinguishing system is arranged in the tunnel model with length of 30 m × width 6 m × high 6 m. According to the actual railway tunnel top of the laying...

A pot experiment was conducted to study the effects of different selenium concentrations on photosynthetic pigment content of Pterocypsela laciniata. Five aspects of chlorophyll a content, chlorophyll b content, carotenoid content and chlorophyll content, respectively, were used to analyze the changes...

To solve the sudden influxes of European refugee crisis, we establish a migration model to resettle the rising number of refugees in EU with proper division. We determine metrics as the index value to describe the countries' capacity and the death rate to measure safe and efficient of movement. We select...

In this paper, we propose an optimum coding STMV beamformer to improve the performance of suppressing high peak sidelobe level with missing sensors. It considers the choices of sub-array geometry have a significant effect on the performance of STMV method using sub-array (we call it STMV-SA), and the...

The effect of different selenium concentrations on the antioxidant enzyme activity of Pterocypsela laciniata was studied by pot experiment. The results showed that the effects of different selenium treatments on P. laciniata were significant. With the increase of selenium concentration, the trend of...

In this paper, we conduct research on development of online financing and the influences on traditional financial and the insurance industry. With the continuous development of the Internet economy, social networks, cloud computing, big data, and so on, more and more Internet applications to provide...

DV-Hop algorithm is a classical range-free localization algorithm used for node locating of wireless sensor network. After analyzing the localization principle and limitation of DV-Hop algorithm the authors proposed an improved DV-Hop algorithm The new algorithm used cluster strategy to reduce communication...

Corn stalk powder was densified to investigate its internal fraction property using triaxial apparatus in this paper, with the experimental method of quadric regressive orthogonal and central composite design, factors of water content, loading speed and bulk density (which is acquired by changing sample...

This paper builds a three-dimensional solid model by Solidworks for study of a large belt conveyor drive roller. The quality of the roller optimized by the zero order algorithm and the optimization target is minimizing quality. Modal analysis of the conveyor roller is carried out in two different cases...

CAST, an advanced process of wastewater treatment, has achieved great attention and application. This paper gives an overall introduction on CAST development, principles, features and its current application and research in China. This paper focuses on comparison CAST with SBR, the traditional process,...

With reducing feature size of transistors and increasing of cores on a single chip, to overcome poor scalability and bandwidth limitation on a single bus, Network-on-Chip (NoC) has been proposed. However, reliability of Multiprocessor system based on Network-on-Chip (NoC) has become a significant challenge...

Based on the soil-water coupled finite element analysis, the vacuum consolidation of soft reclaimed ground is investigated systematically. The engineering background, ground profiles and improvement scheme are firstly introduced in detail, which is also a preparation for the following numerical calculations....

To investigate dynamic compressive properties of ZK60 magnesium alloys under different strain rates, the Split Hopkinson Pressure Bar (SHPB) apparatus was used at ambient temperature. The mechanics response and the correlation rules of ZK60 magnesium alloy under different strain rate compression have...

In recent years, as the intelligent terminals developed rapidly, the combination of intelligent terminals and Internet has been an evident trend of information development and utility software. Based on the kernel of Linux V2.6, Android is the representative of mobile terminal, which is an open operating...

In this paper, a FPGA-based smart camera platform is proposed. A Xilinx FPGA has been adopted as the core device. Xilinx ISE Design Suite has been used as the design tool and Verilog as the program language. In order to validate the platform, two real-time demonstrations have been implemented. In order...