Search all articles

The theory, model and algorithm of three products heavy medium cyclone flow field were researched, and the heavy medium cyclone flow field was simulated. Through the researches, the numerical discrete algorithm of heavy medium cyclone flow field was deduced, the calculation algorithms of heavy medium...

The integrated development of urban and rural areas is committed to breaking the dual structure of urban and rural areas, smoothing the two-way flow of urban and rural factors, and building a new pattern of coexistence and co-prosperity between urban and rural areas.The supply of rural public goods has...

With the continued growth of the medical industry and the backdrop of the COVID-19 outbreak, there is a significant increase in demand for disposable medical supplies. The resulting problem of how to properly and reasonably dispose of a large number of used disposable medical supplies deserves the attention...

Eriksson once said: Adolescence is a critical period of identity construction, but there is a group of student video producers who project their desire for identity into the identity of the video producer, which is BiliBili’s student video maker. This article takes this group as the research object and...

In the context of the current COVID-19 pandemic, vaccine development and vaccination have become a top priority for all countries. Is it necessary for China to increase the vaccination rate of the COVID-19 vaccine through legal means so as to effectively control the rebound and outbreak of COVID-19 and...

Web3D technology, with the advantages of realistic scene simulation and intelligent interaction, has been widely applied to many fields, like electronic business and medical treatment. Aiming at the problems of abstract information and poor interactivity in traditional Distributed Monitoring and Control...

This paper presents Extended Kalman-filter (EKF) algorithm which is based on a first-order Lithium-ion bat-teries model. Curve fitting According to the OCV(open circuit voltage) SOC(state of charge) parameters meas-ured in experiments, descript status equation and observa-tion equation of Lithium-ion...

This paper introduces a recursive algorithm of Kalman filter for digital predistorter parameters extraction based on memory polynomials predistorter model. The predistorter model is firstly formulated as linear regression expression. Then we derive the state-space equation of the model and attain the...

Contemporarily, cosmetic consumption of Chinese female college students is becoming larger and larger. Experiential marketing is used extensively to attract young people. As a French company, L’Oréal (L’Oreal) is successful in the Chinese market and in implementing experiential marketing. This article...

In order to analyze the flow and heat transfer characteristics of the secondary air system, a general simulation block library was developed and a characteristic analysis platform of secondary air system was constructed based on the tool box of MATLAB/Simulink. This platform could simulate all kinds...

this paper analyzes the problems of heterogeneous databases in a distance education system. It provides a heterogeneous database integration model based on XML and design and develop a heterogeneous database integration platform based on this model. Thus, it provides a unified standard and effective...

The separation and detection modules of the chromatographic system for the transformer gas-in-oil on-line monitoring is improved. The former single-column separation detection module is improved to double-column separation detection module, and compared with single-column detection module. The results...

Animation publishing has become an important carrier of mainstream ideology communication, which enhances the communication power of mainstream ideology. It is embodied in the fact that animation publishing extends the main body of mainstream ideology, popularizes the mainstream ideology dissemination...

A pot experiment was conducted to study the effects of intercropping with four Bidens species (Bidens bipinnata, Bidens pilosa, Bidens parviflora and Bidens biternata) on photosynthesis and soluble sugar content of grape seedlings under cadmium (Cd) stress. The result showed that net photosynthetic rate...

The effects of intercropping with four Bidens species (Bidens bipinnata, Bidens pilosa, Bidens parviflora and Bidens biternata) with grape seedlings on soil organic matter and soil enzyme activity under cadmium (Cd) stress were examined in order to provide the reference for grape production in cadmium...

The effects of intercropping with four hyperaccululator plants Galinsoga parviflora, Sigesbeckia orientalis, Solanum nigrum and Crassocephalum crepidioide on soil enzyme activity and soil organic matter of grape seedlings under cadmium (Cd) stress were studied by a pot experiment. The results showed...

With the development of computer and related technology, makes the computing, communications, network and sensor, and other functions are integrated in wireless sensor network technologies. This article is precisely based on this research background, we have analyzed the overall design of wireless sensor...

Along with computer technology's popularization and application and popularization, the network technology has been widely used, the resulting network security issues have become increasingly prominent, the network itself and network information system which is based on the potential security risks....

In verbal communication, code-switching is a common occurrence. The motive for code-switching has been studied from a variety of disciplinary viewpoints, including sociolinguistics, pragmatics, and psychology. This study will summarize Colin Baker's views and investigate the value and underlying...

The present situation and development trend of IOT were introduced briefly, the talent demand status of IOT industry was described, the professional ability of the IOT industry practitioners was analyzed, and the development direction of IOT engineering major for university of application technology...

The paper designed a WLAN system with RFID systems joint locating algorithm based on Federated Kalman Filtering. For the problem in indoor mobile node single positioning system, such as insufficient positioning accuracy, longer positioning time and not ideal algorithm complexity, it was proposed that...

Melatonin (N-acetyl-5-methoxytryptamine) in plants is to act as an antioxidant providing protection against environmental agents. In our study, we used different concentration of melatonin (control, 50 μM, 100 μM and 200 μM) to investigate the effect of melatonin on antioxidant system under low light....

Melatonin (N-acetyl-5-methoxytryptamine) is a low-molecular-weight molecule having an indole ring structure and considered as the best antioxidant substances. However, the role of melatonin in low light stress remains unknown. Our study investigated the possible role of melatonin on secondary metabolite...

Cybersecurity, as stated in the 2010 National Security Strategy of America, “threats represent one of the most serious national security, public safety, and economic challenges we face as a nation”. This paper examines the cybersecurity situation that the nation faces. Based on this, the vulnerabilities...

Melatonin is a ubiquitous indol molecule and has powerful functions in relieving abiotic stress responses. In our study, we used the kiwifruit seedlings as the materials and investigated the efficiency of different concentration melatonin (50 μM, 100 μM and 200 μM) on protect photosynthesis compared...

In the non-road vehicle transmission systems, it always has early damage in the input shaft bearing. Gearbox simulation model is established by Romax software. Based on the different load spectrum of all shaft bearings and Adjusted bearing damage rate prediction method (instead of ISO 281), rolling bearings...

Because of the different referential foreign theories, the theory of educational cost calculation in Chinese higher education has not been unified yet. Besides, it is also obsessed by undecided calculating objects, non-profit orientation of the public colleges and universities, inadequate supervision...

Anaerobic degradation of the polyethylene glycol 400(PEG400) was studied. The effect of concentration was respectively assessed on the anaerobic bio-degradation of PEG400, using the organic model wastewater containing the 1.0% and 0.5% PEG400. The result showed that: the TOC(Total Organic Carbon) and...

Aiming at randomly sine-maneuvering target tracking in the precision guided system, a fast and efficient algorithm is proposed for multiple model adaptive estimation. The filter bank corresponding to target maneuvering model was adopted to estimate the acceleration of the target, which can improve the...

Along with the aging process of society, the proportion of seniors’ population is increasing as well as seniors’ demand for medical treatment. The problem of seniors’ medical treatment has been a focus of attention in China today. Meanwhile, with the promotion of the electronic process of medical treatment,...

In the recent decades, studies on the legal English field has drawn an increasing attention among the academics, due to the development of global economics and frequent inter-cultural communications. In the late 1990s, P.R.R. White and J.R. Martina had proposed the appraisal theory, which mainly was...

Residents of the relocated households refer to those who have relocated their houses in the city and experienced a sharp transformation from rural residents to city residents. They witness rapid growth in the development of urbanization in China and they embody two separate identities at the same time:...

The oxidative degradation of the wheat straw was carried out with NaOCl aqueous solution. The resulting oxidative degradation solution was fractionated and the extract was analyzed by FTIR. The results show that a large amount of oxygen - containing degradation products can be extracted by ether and...

with continuous advance in reservoir prediction technology, the requirements for inversion accuracy are higher. It requires that seismic data must have features such as high fidelity, high SNR and high resolution. How to ensure the improvement of seismic data resolution on the premise of not reducing...

Optimal jamming waveform design is an effective way to improve the efficiency of electronic countermeasure, which makes it the focus issue in the field of electronic warfare. With new jamming technology emerging, jamming waveforms present characteristic of smart and intelligent. Owing to it, the smart...

Quadrotor Unmanned Aerial Vehicle is a kind of UAV, which is disturbed easily and has nonlinear and strong coupling characteristics. In the paper, the model of Quadrotor Unmanned Aerial Vehicle is presented, then the adaptive sliding mode control laws is designed based on the model. And the disturbance...

Switching power supply is on the basis of the development of modern electronic science and technology, using the power switch tube, by controlling the switching time (duty cycle) to make the output voltage stability of the high frequency power supply, it includes two parts of the main circuit and PWM...

This paper focus on the GNSS(Global Navigation Satellite System) signal processing based on PMF(Partial Matching Filter)-FFT(Fast Fourier Transform), and a dynamic analysis method of high dynamic GNSS signal is proposed. PMF-FFT has a wide range of applications in GNSS signal acquisition, but no one...

From spatial perspective, this paper applies spatial panel model to study the main factors affecting regional financial efficiency. Seven indices were selected from aspects of macroeconomic factors, financial factors and policy factors and analyzed to see the impact of those factors on China's regional...

Accurately object searching plays an important role in computer vision. Retrieving and locating target objects in images are object searching’s two sub-tasks. Aiming to promote the precision and recall of object searching, selecting appropriate image representation methods is the core issues. The representation...

The research shows the investment analysis of MEGVII from investors’ perspectives by using the POCD framework and SWOT analysis. From the development of artificial intelligence and the market in China, Megvii has sufficient potential for growth in the artificial intelligence market. AI is undoubtedly...

Size, location and rotation angle of on-line handwritten signature will have effects on the performance of verification. Methods of alignment for on-line signature verification are proposed in this paper, the size, location and rotation angle of test and reference signatures are aligned effectively to...

With the development of the Internet, the speed of information dissemination is constantly accelerating and the scope of dissemination is constantly expanding. Online media’s ability to spread information has already surpassed traditional media. Thanks to the popularization of social media and image...

In the study environment dominated by female students, male nursing students in higher vocational colleges will develop inappropriate behavior of using mobile phones. Excessive use of mobile phones will lead to the decline of academic performance and physical quality of male nursing students, and will...

The development of the new era has obvious requirements for the translation industry. In the context of “cultural confidence” and “big data” as the characteristics of the times, this paper analyzes the reasons for the mutual symbiosis between “cultural confidence” and translation strategies, reconstruct...

The adsorption of xylitol residue in 200mg/L of Cr(VI) solution at different ionic strength was studied. Results show 97-99% of Cr(VI) can be effectively adsorbed when Ca and Na ion concentration was ten time of Cr, and the adsorbing ratio decreases with the increasing of Ca and Na concentration, indicating...

Aiming at the problem of assistant teaching and training system for the elevator operator and maintenance operators, the present professional training patterns were analyzed. The virtual elevator system was applied to the elevator training areas, based on the ‘Examination requirements for Safety Administrator...

This paper mainly analyzed the process and function of data mining in logistics enterprise. Analyzed the data mining application in logistics enterprise customer relationship management, supply chain system management and decision- making system. Pointed out the means, effect and mechanism of SQL data...

Based on the virtual reality technology, we developed a training operation skill system for elevator by the modular design. It would be applied to assess workers for elevator. According to the country assessment outline, the system realized the functions of theory and operation skill training. In addition,...

This paper is based on April 2020 to July 2020 bitcoin price and s & p real assets index data, using the VAR model for dynamic identification, empirical analysis results show that the currency price is s & p real assets index, but s & p real assets index is not the currency price granger....