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Control system design of quadrotor helicopters with accurate actuator modeling is an important practical design problem that many previous works did not consider. In particular, most actuators of such vehicles are brushless motors, which are hardly controlled without accurate dynamical models. In order...

In recent years, high-frequency trading as a frontier and hot issues of modern finance, has attended much attention in china. At 11:05, August 16, 2013, Shanghai index moved up sharply, with the grail increasing more than 5% in one minute. The highest index was reported 2198.85. Media call this event...

During the current informatization period, teaching and learning activities are undergoing more and more changes. However, looking at the teaching methods of these teaching modes, they all hide the post-modern curriculum concept: emphasize the individual's personality liberation, difference and freedom,...

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...

Constant elasticity of variance model for option pricing in a composite-diffusive regime is established. We obtain the Black-Scholes differential equation and the corresponding Black-Scholes formula for the prices of European call option. Furthermore, we discuss an asymptotic expansion of the European...

Under the background of the current “Internet+” era, the traditional enterprise performance management model has problems such as insufficient overall planning, poor departmental coordination, and single service function, which can no longer meet the needs of enterprise development in the new era. With...

This paper studies the heavy medium coal separation model, analyzes the heavy medium separation experiment, fits the distribution curve, and examines the coal separation effect. Through research, it can be seen that the coal preparation accuracy Ep value gradually decreases with the increase of particle...

Nowadays, Ebola epidemic situation is more and more severe and out of control. Taking Sierra Leone as an example, we build a reliable and extensive model to control or at least inhibit the spread of Ebola. We select 16 cities that are affected by Ebola according to the news re¬ports. Taking advantage...

Contemporary university students have a strong sense of individuality, and their psychological problems are hidden and complex, so traditional psychological surveys can no longer meet existing needs. How to use the new generation of information technology to solve this problem and establish a “24/7,...

In order to assess the maintainability of weapon system on the system-level more scientifically and accurate, the concept of “Influence degree” is introduced into this study under the consideration of the relational degree between the influence of components on system and assessment indicators. By combining...

In CNC machining, it is desired to obtain high machining accuracy with high processing velocity as far as possible, however it is difficult to realize, and especially machining NURBS curve with large curvature. Based on scheduled feedrate on curvature of NURBS, a new NURBS curve interpolation algorithm...

The HMAC algorithm is widely used to provide authentication and message integrity in digital communications. However, if the HMAC cryptographic algorithm is implemented in cryptographic circuit, it is vulnerable to side-channel attacks. A typical example is that in 2007, McEvoy proposed an attack strategy...

Since China's reform and opening up, not only focus on the development of social economy, especially for the construction of spiritual civilization. As an important part of the construction of spiritual civilization, sports dance competition plays a very important role in the construction of spiritual...

The mathematics education for children is not only required by the environment adaptation for children, but also by the mathematical logic ability development for children. There are neither kindergarten curriculum standards, nor detailed standard in specific field for kindergarten in China. The enlightenment...

In terms of traditional curriculum design, it usually reaches the final learning goal through scattered knowledge points. The inertial navigation course has so many details, complex theories and formulas, whereas the traditional “teacher-oriented” approach to passing on knowledge points from the conditions...

Path-planning is a technology applied widely in many fields such as auto navigation, logistics management, robotics and so forth. In this paper, an intelligent visual path-planning framework (IVPF) is proposed for developing intelligent visual path-planning system, which consists of complex graphs drawing...

The large - span single - layer reticulated shell structure is a structure sensitive to the load distribution. Different distribution of snow load has an effect on the stable bearing capacity of the reticulated shell structure. The unfavorable snow load distribution may cause the stable bearing capacity...

Enclosure is an important equipment to reduce the electromagnetic interference. Rational design can make electronic equipment has a good electromagnetic compatibility. This paper presents the coupling elements of the typical electronic information equipment, then uses the HFSS scripting language (VB...

In order to improve the robustness of microphone array beamformer in existing mismatch errors, robust beamforming algorithm based on linear constrained minimum variance and diagonal loading method is proposed. The proposed algorithm incorporates the spatial response variation function into the linear...

The ensemble empirical mode decomposition (EEMD) is a self-adaptive signal processing technique for nonlinear and non-stationary signals, which can alleviate the mode mixing problem occurring in empirical mode decomposition (EMD). As a improved support vector machine (SVM) method, Twin support vector...

Objective: In recent years, massive open online course (MOOC) has rapidly become a novel type of remote educational model worldwide. In this article, MOOC was applied in the course teaching of veterinary medicine to investigate the unidirectional ecological attribute of MOOC. Methods: Classification...

A novel crossover genetic artificial fish swarm DNA encoding sequence based weighted multi-modulus blind equalization algorithm(ncGAFS-DNA-WMMA) is proposed to solve the defect that error function doesn’t match with the signal constellation model in the multi-modulus blind equalization algorithm(MMA)....

In order to solve the problem of inadequate consideration of the sanitary environment of refuge in the planning of refuge places in China, this paper studies the construction technology of toilets in refuge places in Japan, sorts out its management mechanism and implementation policy, and summarizes...

Microstructural changes of 10CrNi3MoV marine steel before and after hot forming were detected by testing devices such as X-ray diffractometer, the formation causes and law of gradually changing surface microstructure of hot-formed material and those of the interior martensite structure were analyzed....

The intangible cultural heritage is not only the important carrier of the traditional culture of the nation, but also the root of the people's wisdom and national self-confidence. The existence and inheritance of traditional folk music in Wuwei area of Gansu province are worrying. This paper analyzes...

The original oil in place suitable for chemical flooding in Shengli oilfield is 1.6 billion ton. Though the resource is abundant, the oil recovery is poor due to rigorous reservoir conditions, including high temperature, high salinity, high divalent-cation content, high oil viscosity and severe heterogeneity....

This research meticulously investigates the practical needs and implementation pathways for applying the Hierarchical Progressive Training Model in military physical education courses, aiming to elevate teaching quality and satisfy individualized and diversified teaching requirements. This paper discusses...

In this paper, we present an efficient soft de-mapping method for M-ary APSK modulation based on hard decision thresholds (HDT), which significantly reduces the computational complexity compared with the maximum likelihood detection (MLD). Furthermore, bit error rate (BER) performance of several soft...

This paper introduced a novel and efficient inorganic antibacterial material technique, which used hydroxyapatite (HAP) as a carrier, taking the method of co-precipitation and ion-exchange to prepare Titanium/metal ions (Ag+, Cu2+, Zn2+) and then combined with hydroxyapatite (HAPTiM). According to the...

The chronic low-frequency stimulation could stimulate the expression of c-fos gene in the prefrontal cortex and enhance the endothelin-1 (ET-1) levels of liver and spleen in tree shrew (Tupaia). Our results suggested that application of chronic low-frequency stimulations yielded significant c-Fos protein...

The network security situation early warning has been deeply studied in the paper, and a hierarchical network security situation early warning model has been established based on fuzzy reasoning. First of all, the correlation theory of fuzzy reasoning in artificial intelligence has been introduced, we...

The Xi'an freight hub node and operation status are sorted out. With the purpose of breaking through the existing limitations and adapt to the development needs of the Silk Road Economic Belt, the paper proposes a Xi'an international freight transportation hub with "one center + two carriers + four channels"....

Existing anomaly detection technology is mainly concerned with the detection of anomalous flow, and it is not enough to study anomaly type. Therefore, a method based on information entropy and k-means clustering is proposed to construct the anomalous traffic entropy feature vector to achieve fast and...

Currently, sharing economy has penetrated into all fields in China, among which ride-sharing has demonstrated a leading role and has greatly changed the traffic mode. We briefly describe the definition, development courses, and the typical forms of China's ride-sharing in the beginning. Secondly, we...

Mining industry plays an important role in Chinese National Economy with more than 10 million persons serving for it, yet the quality and capacity of Chinese mining engineers has lagged far behind developed countries. In this paper based on “Plan for Educating and Training Outstanding Engineer”, according...

With the development of the society, people have more and more emphasized the quality-oriented education, computer science is also no exception, and the cultivation of professional computer talents has become the important objective and direction of teaching reform. However, the traditional teaching...

In this work, a stirring and heating test system was built. An experiments at different rotational speeds within 1 h has been done for three working fluids: water, 46 # hydraulic oil and saturated NaCl. Under the ideal state without considering the energy loss, the results show that the temperature rise...

A nine freedoms nonlinear three-axle vehicle dynamic model was constructed by Matlab/Simulink to analyze the control effect of directional stability for different Anti-lock Brake control algorithm. Algorithms analyzed here contain PID, logic threshold and sliding mode variable structure control algorithm....

School-enterprise collaborative education is one of the directions of China’s higher education reform, and an important means of cultivating applied talents. This article analyzes the problems of school-enterprise collaborative education, and proposes methods and measures for school-enterprise collaborative...

Based on the characteristics of clinical medical literature keywords including syndrome, disease and treatment, a multidimensional analysis system for medical literature retrieval keywords is designed to satisfy the needs of users. The system focuses on the analysis of medical literature retrieval keywords,...

One single-period many products 4PL network location model which synthetically taking the manufactory, centralized return centre, consumption area/initial return point, repair processing centre, distribution centre, and disposal centre into account,is constructed in this paper. The objective is to minimize...

In order to measure the peak value of the sinusoidal wave more conveniently, we did a full-wave rectification to the sinusoidal wave, then analyzed its frequency spectrum by using Fourier analysis. By researching the relationship between the DC component in the spectrum and the peak voltage, this paper...

The military theory course is very important, and it is a compulsory military basic course offered by regular colleges and universities. In view of the low interest and difficulty of some students, the characteristics of military theory courses are firstly summarized in this paper, and the structure...

Capital is the lifeblood of a company’s survival and development. Companies with lower financing costs are generally more competitive. However, the global pandemic of the new crown pneumonia has increased the uncertainty of economic policies and brought challenges to the financing activities of enterprises....

Good design is not merely about imparting knowledge and skills to students, but rather it aims to generate a more comprehensive and concrete learning experience by being directed towards the objectives and their underlying implications. When designing lessons, units, and courses, we do not derive from...

In purposing of exploring the financial expenditure performance lever of higher vocational institutions in Sichuan Province in 2021 and providing them with relevant proposals on financial expenditure utilization rate, the article applies factor analysis to select 12 categories of relevant indicators...

According to traditional theory, painting should be the imprint of mind, which serves as a principle to both artists and the audience. Guo Xi, an ancient Master of Landscape painting, sticks to the principle by conveying his mind when drawing the outline of the landscape. Chinese traditional aesthetics...

API hydrological model is common used on streamflow forecasting for its' simple structure and robust ability on acquiring high precision forecasting results. But for a long time, parameter calibration has been the major difficulty for the use of API hydrological model. API model develops from the empirical...

In recent years, China’s exhibition economy has developed rapidly, but in the process of development, there are some problems such as unbalanced supply structure, low supply quality, unbalanced supply and demand and so on. By using the method of literature analysis and system model construction, taking...

The magneto-rheological fluid Dual Clutch Transmission (MDCT for short) adopts the magneto-rheological (MR for short) effect of magneto-rheological fluid (MRF for short) and the working characters of Dual-Clutch Transmission (DCT for short), and combines the characteristics with long service life, no...