Internet + Education has a good development prospect. The SPOC platform can make offline classrooms more dynamic, but SPOC is currently used less in basic education.The article firstly divides the learning factors that affect mathematics effectiveness into curriculum design and implementation, individual...

The principle of drawer, also known as the "pigeon (nest)" principle, is a common method for solving existential problems. It was first proposed by the German mathematician Dirichlet. Therefore, it is also known as the Dirichlet principle in mathematics. In this paper, the combination of algorithms and...

For the satellite constellation design problem, the computational complexity of regional coverage performance evaluation has posed great difficulty to classical Pareto dominance-based algorithms discovering the entire Pareto front of the problem, while the decision makers are often interested in a limited...

Aiming at the problem that the color image with more detailed textures is not highly segmented in the image segmentation process, a PKGC image segmentation method based on improved edge detection difference ratio is proposed. The method first constructs an energy function by using a parametric kernel...

We investigate the behavior of a first variation under an analytic Feynman integral and a convolution for cylinder functions〖 f((h_1,x)〗^~,⋯,(h_n,x)^~ ) and we prove that the analytic Wiener integral and the analytic Feynman integral of the convolution of two cylinder functions can be successfully...

On the basis of widely reading papers published in the 13 core Chinese journals recently and with methods of literature review, expert interview and questionnaire, this paper points out the problem concerning regression in sports research, such as the model examination, the content of the case study,...

In the safety management system, risk management is the core and it is the key to complete risk management for scientific risk evaluation. However, in the previous risk evaluation, the safety sheet inspection technique is often used. Also, workers’ experience is referred to roughly estimate the risk...

The auto-correlation and cross-correlation of a nonlinear stochastic energy harvesting system are studied by stochastic simulation method, which show periodic oscillation and gradual attenuation, implying that the nonlinear stochastic energy harvesting system possesses complex dynamical behaviors. Among...

We examine whether the risk preference in losses increase the disposition effect. We take 9526 investors’ annual trading data of a large china’s futures company in 2013 as an example. The results show that most of investors have disposition effect, only the professional investors have a moderate risk...

Income inequality is an inevitable phenomenon in each country. National government can use the macroeconomic policy. This paper is try to find a relationship between the factors of index systems of macroeconomics and income inequality. Based on the factors of macroeconomics in world bank data, we acquire...

Based on the sparse characteristic of most signals under some transformation, compressive sampling has been brought out to replace the traditional Nyquist theory based sampling. This paper presents a Bayesian method to recovery the original signal from compressed measurements. A hierarchical Bayesian...

Noise reduction and signal separation are very important basal works in signal processing. Pattern Filtering Method（PFM） , which is introduced as a new method for signal processing in this article, is applied to cross-hole tomography signal processing. Acoustic Computed Tomography (CT) signal with noise...

The space station has gradually entered the world. It is equipped with centrifuges for variable gravity experiments. The stagnation of centrifuge may lead to the increase of motor current, which may lead to fire. Vibration signal of centrifuge is unstable and asymmetric. Secondly, the first order modal...

The storage of unstructured data plays an important role in the implementation of big data environment, thus, choosing an efficient database can provide an excellent solution for data mining. In this paper, two database technologies, MongoDB and PostgreSQL, are used as performance tests for storing unstructured...

The stack is a very special data structure that can only be inserted and deleted on its side, and is a very special linear table. It in accordance with the first to go out of the order of the principle of data storage, that is, first entered the data into the bottom of the stack, the last entry into...

Demand response plays an important role in realizing power supply and demand balance as well as optimizing resource allocation. In an increasingly open market environment, it is necessary to study the interests of each participant in demand response and formulate a reasonable and effective response mechanism....

The problem of college students’ learning disability is one of the problems that need to be solved in universities. This paper aims at the college students’ learning disability and applies linear regression model to analyze the relationship between learning behavior and achievements of students. It concludes...

In order to objectively and effectively evaluate the scientific and technological innovation capability of colleges and universities, an evaluation index system including science and technology input, achievement output and transformation, and scientific and technological innovation support was established....

Social media platforms are the main resources to collect people’s sentiments and opinions. We can extract quantities of useful information from the social network. Weibo is the most popular social networking application in China. In this paper, we’ll describe our attempts at producing a state-of-art...

In the past, people studied the stock market based on the assumption that the stock entity is known to be affected by the news. However, due to this assumption, these methods inevitably ignore the news without stock entities, and many news without stock entities will also have a significant impact on...

This paper summarizes the stress characteristics of non-standard box girders and the grillage method, and according to the engineering practice experience, summarizes the characteristics of the grillage method in the stress analysis of non-standard box girders, and draws the corresponding conclusions....

In order to solve the problem of the uniformity of fertilization, the structural parameters of fertilizer shunt plate were optimized by EDEM. The variation coefficient of fertilization uniformity was used as an evaluation index of the fertilizer shunt plate. Simulation model of fertilizer shunt plate...

Financial restatement is the announcement of an ex-post facto remedy for errors, omissions or misleading information in the financial reports of a listed company on a voluntary basis or under the supervision of a certified public accountant or regulatory body. These will inevitably lead to an incalculable...

In this paper, the heating process model of billets of different sizes with different spacing is simulated. Monte carlo method is used to determine the observation factor matrix of the outer wall of the heating furnace, 3D finit-difference method is used to calculate the heat exchange between the furnace...

Traditional question banks only pay attention to digitalize questions. This article proposes a new algorithm based on particle swarm optimization improved by personal parameters, which combining analyzing user’s exercise data. This method can provide an online, on-the-fly and personal service for each...

In order to obtain the most intense concentration of hydrogen explosion in a confined space in the simulated environment, the methods of theoretical calculations and numerical simulations were used. Through comparison of multiple sets of data, it was concluded that the hydrogen explosion equivalent concentration...

The emergence of surface mount technology (SMT) has created new challenges. The most challenging is the need for more capable system to monitor the product quality. Currently, the most popular method is based on machine vision for automated optical inspection (AOI). But they generally only work in 2D...

According to the characteristics of forging production, it describes the forging production from the dimensions of forging products, forging equipment, process flow, quality management, mold management, production personnel management, and sorts out the data flow in the forging production process, which...

We investigate the filtering properties of double ring resonator compared with single ring resonator. Double-ring resonator not only could generate strong absorption dip similar to the dip in single ring resonator. It also produces box-like filtering effect with high contrast ratio and flatness bandwidth....

In this paper, the experimental platform of wearable ankle rehabilitation device is built, and the mechanical performance of the wearable ankle rehabilitation device is tested on the experimental platform. Four kinds of experiments were carried out: trajectory tracking test, step response test of moment,...

In recent years, around-view monitoring systems have become a public driving assistant for reducing collision hazards by eliminating invisible areas. Many of such systems provide short range views surrounding the vehicle, limiting its application to parking and reversing. We had developed a wide-scoped...

To solve the problems that bank-to-turn (BTT) control is highly coupled and do not have a fast response time as well as that skid-to-turn (STT) control lacks of flying stability, this paper divides flight time of surface-to-air missile (SAM) into two stages by fully taking the advantages of both BTT...

Currently, Ad Hoc on-demand Distance Vector (AODV) and DSR (Dynamic Source Routing) are the most frequent protocols in the vehicle-mounted network. Compared with other routing protocols, AODV and DSR effectively reduce the resources occupied by the network. Therefore, based on the OPNET simulation environment...

In this work, a qualitative analysis of maintainability is performed on the basis of a general and specially designed criteria in the early stage of equipment development. A qualitative evaluation system of maintainability is constructed by defining the design criteria of maintainability and combining...

It is a technical difficulty for the safe and economic running of active distribution network to control and manage distributed generators, energy storage system and load flexibly and effectively to eliminate the effect of distributed energy uncertainty on grid. In order to achieve the optimal coordinated...

Traditional energy system planning mainly focuses on the energy system itself, featuring more serious fragmentation. The planning of intelligent energy systems needs to take full account of the system operation and coupling between different energy systems. In the present study, the planning model of...

Nowadays, with the rapid increase of network resources, traditional search engines can no longer meet people's needs. Therefore, the network crawler as an important part of the search engine is more and more important. This paper introduces the concept and classification of network crawler, how to use...

With the rapid development of Internet technology and computer technology, classroom teaching is gradually moving towards informationization and networking. One of the popular and effective teaching methods is case teaching. However, the scattered cases are not conducive to further study for students...

With the continuous application of new information and communication technology in the asset management of power information and communication equipment, a large amount of data will be generated in all aspects of asset management. In data acquisition, due to sensor faults and other reasons, data anomalies...

5G will be a revolution technology for cloud service based on the high speed and low delay internet to improve the user service and provide more possibility for cloud service. The low internet delay allowed more users interaction happened based on the service provider without complicated limitation to...

The industrial network communication and application based on advanced automation process control system are used for industrial network communication to realize the configuration among PLC, HMI touch screen, communication module, interface module, DP / PA Link and DP / PA coupler, and a set of analog...

In this study, we aim at finding the biomarker and competing endogenous RNA (ceRNA) network analysis of rhabdoid tumor (RT) in kid’s patients based on the RT subproject of the Therapeutically Applicable Research to Generate Effective Treatment (TARGET) kidney project. The differentially expressed genes...

In practical application, the Kalman filter (KF) still have technical problems which have not been solved in the LDS, such as the determination of filter initial values, the slight deviation of model coefficients, the outlier or systematic deviation of measurement data and the covariance estimation of...

For space application, in order to improve the reliability of memory operation, the SEC-DED (40, 32) Hamming code is used for single event flip (SEU) fault protection of external memory for 8-bit width parity memory. Based on the (39,32) Hisao code, a parity bit is added to minimize the error correction...

In text classification, texts are represented as a high-dimensional and sparse matrix, whose dimension is the same as the total number of terms of all texts. Using all terms for text classification tasks will affect the accuracy and efficiency. Feature selection algorithm can select some features most...

At present, the index of the effect evaluation of reservoir ecological operation cannot fully and systematically reflect the impact of the operation on the river ecosystem, and there is a lack of a complete and widely applicable index system. From the composition of river ecosystem, taking full account...

Under the background of the big data era, enterprise users are becoming more and more demanding for data storage. Traditional storage systems have become difficult to apply, and storage virtualization technology has been born. Based on this, this paper first expounds the basic concepts of cloud computing...

For the difference between aspiration and non-aspiration of consonants in Mongolian, it is generally considered that the airflow of unaspirated such as[p], [k], [t] is weak. The airflow of the aspirated like [pʰ], [tʰ], [kʰ] is strong. This paper has further analyzed this based on experimental phonetics....

This paper describes the speech aerodynamic characteristics of the standard Mongolian tense and lax vowel based on the experimental method, and finds the elastic change of the vowel and the movement of the tongue position are influence on aerodynamic parameters like airflow rate, glottal resistance,...