Search all articles

One of the important factors affecting the photoelectric conversion efficiency (η) of solar cells (SCs) is the resistance which are consist of shunt resistance (Rsh) and series resistance (Rs). In order to improve the performance of silicon cell, it is essential to characterize the Rss and Rsh of multijunction...

People's living standards have improved with the development of society, and concerts have already become part of our daily lives. Though there are thousands of pop concerts around the world each year, the interaction between idol and fan during the show is still primitive and limited, and almost every...

With the rapid growth IoT (Internet of Things), indoor positioning system has attracted significant interest, especially in complex environment. UHF RFID system has the potential to estimate the accurate location of indoor objects due to the long reading range and multi-tag identification capability....

The energy saving and emission reduction of public transportation enterprises is very important. What factors affect these jobs? Through investigating 7 cities of different scale and different places, we can know actual data. By comparing the data of different cities, we can analyze the influence of...

China started late on carbon trading. Though we are making rapid progress now, there's still a long way to go to establish a comprehensive nationwide carbon trading market. Among the various practical difficulties which should be overcome, economic woes are main obstacles in the development of domestic...

In this experiment grey fabrics (woven) were treated by using various concentrations of multifunctional scouring agent (M.F.S.A.) and H2O2 in case of single-step process. Also optimized required number of chemical used for whole process; here only two chemicals have been used. No additional chemicals...

Wisdom classroom is a hot spot in the current educational informationization research, and it is the product of the deep integration of new technology and education. The smart classroom created by the new generation of information technology can track the whole process before, during and after class....

In the era of big data, major changes have taken place in education and learning methods, and curriculum reforms will also keep pace with the times. This article starts from the research of ability-based education curriculum reform, combined with the development of office automation curriculum reform,...

Most work related to query extension (QE) adopted the assumption that terms in a document are independent, and multinomial distribution is widely used for feedback documents modeling in lots of QE models. We argue that in QE methods, the relevance model (RM) which generates the feedback documents should...

The development of tea culture in Shandong Province is very rapid, but there are few tea culture tourism commodities that can meet the needs of tourism consumers. Therefore, it is necessary to develop tea culture tourism commodities. At present, there are some problems in the development of tea culture...

In order to improve the dynamic measurement capability of magnetohydrodynamics (MHD) angular rate sensor (ARS) furtherly, this paper gives the error analysis of MHD ARS under the influence of a non-uniform magnetic field. In this work, the numerical simulation using 3D-Magnetostatic and FLUNET coupled...

As one of the major disasters of opencast mines, landslides not only directly affect mine production safety and economic benefits, but also cause a lot of casualties and property losses. Through analyzing and evaluating the dump landslide danger and the main influencing factors, we proposed the early...

The theme of this thesis study surrounds Lawerence Venuti’s theory about utilization of domestication in translation, as well as how Lin Shu reflected Venuti’s theory in his translation of Charles Dickens’ novel David Copperfield. The first part of study contains the literature review and the statement....

Love is one of the basic themes of literature. The theme of love is common in Chinese classical poetry, showing a unique style and feature. The expression of love theme depends on language expression and meaning construction, and depends on people’s experience and cognition. Metonymy is one of the basic...

Since the heat dissipation problem is harsh in high power LED lamp, in our study we suggest an optimal design method of high-power LED lamps radiator based on the equivalent thermal circuit method, we abstract mathematical model of the heat dissipation system of the lamps, then chose several key parameters...

This paper studies whether M & A can alleviate the financing constraints of the main merging party, taking the M & A experience data of Chinese listed companies in 2010-2016 as an example. Through the research, we find that: (1) the listed companies in M & A generally have the problem of financing constraints...

Self-portraits derive from portraiture. Initially, artists painted self-portraits to prove their identities; then, they used these paintings to show their unique personalities and life experiences. The psychological foundations of self-portraits are human's self-consciousness and their eternal pursuit...

The active vibration isolation of the engine in the range of broad frequency can realize by the controllable damping characteristics of the magneto rheological damper. This paper firstly discusses the principle of the experiment and then explores the equipment and process of the experiment of vibration...

The watermelon juice was pasteurized by the ultra-high temperature treatment, and stored at 4 øC for 2 weeks. The ultra-high temperature reduced the initial microbial counts of the watermelon juice. The aroma of the watermelon juice was reduced during the storage at 4 øC for 2 weeks. The typical volatiles...

China’s aging population is aggravating. Based on the current situation that medical institutions and endowment institutions are independent, and unable to meet the needs of the elderly, the author first studies the importance and significance of the endowment service combining medical treatment with...

This paper examines the threshold effect between R&D intensity and firm performance based on the panel threshold regression model. The results show that there is a double threshold effect on the impact of R&D input intensity on firm performance. Only when the R&D investment is in the optimal range can...

Using literature and other methods. This paper studies the conception, historical background, environment, cognition and practice of mass sports culture in Yanan period and the course of development of mass sports in Yanan period, and explores the great influence and significance of Yanan period mass...

Aiming at the learning problem of multi-aggregation process neural networks, an optimization train method based on chaos genetic algorithm (CGA) with lowest mean square algorithm (LMS) is proposed in the paper. The learning problem of the network weight functions is converted to the training of basis...

Since the early 1990s, brand image has become an indispensable part of the consumer society in China, so people begin to pay attention to the exploration and research of brand image. While results of a variety of brand image research have been made in China and abroad, most of the exploration and research...

The purpose of the paper is to design a visual servo robot system to finish some tasks with a better effect instead of workers. This system is designed with closed-loop control based on image feature, and it is more accurate than the control based on position. The system consists of two parts, including...

This article focuses on the improvement in light fastness of reactive dyed fabric. Cotton fabric was dyed with Liyuan Yellow F S reactive dye and cationic UV absorber CANFIX SUN was subsequently applied by exhaust method in order to improve light fastness property. The light fastness property of the...

The current international economic developing speed is becoming slow, which affects China's domestic economic development indirectly. In recent years, the economy is in the new normal circumstances. Although China's economy is mainly in a upward trend, but the development of the domestic economy growth...

The location selection of the dispatch and control center of South-to-North Water Diversion Project is one of the fundamental aspects of the construction. However, the discussions are not enough. On the basis of analyzing and summarizing the influence factors, assessment indicators based on factor classified...

The US Accountable Care Organizations (ACOs) is a health care service delivery model in the United States. It aims to use the market mechanism to integrate the resources of the US fragmented medical services to form a medical association with a certain scale effect to reduce costs and improve service...

In recent years, the number of Chinese aging population continues to increase, the design of public self-service aging population can effectively improve the social work efficiency based on social cost savings, solve some of the problems of an aging society. Through the analysis and summary of the needs...

The authors analyze the evolution of Beijing’s water resources utilization based on changes in Beijing’s industrial water use, adjustment of water structure and changes in water efficiency. At the same time, combined with changes in Beijing’s economic and industrial development, the authors use the method...

How to make mathematics a fun course closely related to life is urgent problems for college teachers. Informationalized teaching provides a new turn for Engineering Mathematics, which can significantly improve the teaching efficiency, make some difficult mathematical theorem definitions vivid, create...

The energy consumption is increasing year after year with the development of economy in our country. Improving and optimizing the way of energy use constantly is necessary. Industrial waste heat is the energy which is not used in the thermal conversion equipment and energy-using equipment in the process...

How digital transformation allocates resources in manufacturing enterprises and ensures the enhancement of innovation efficiency has become an important issue in this cutting-edge research topic. Using unbalanced panel data from A-share listed manufacturing enterprises in China from 2013 to 2021, this...

Nowadays, globalization has become an inevitable trend, covering policy, economics, culture, ecology, ethnic, religion and many other aspects. The emergence of cultural hybridity phenomena is an inevitable and always existing part of globalization. This can be reflected in the international media, especially...

Tourists’ uncivilized behavior not only has an impact on tourists themselves, but also causes different degrees of harm to cities, scenic spots, environment and society. Based on the analysis of tourists’ uncivilized behavior of Chinese tourists, this paper analyzes the causes of tourists’ uncivilized...

In the combination process of photovoltaic electric power generation with agriculture, there are many problems brought out, even in some important demonstration projects in Hainan island. In order to solve some of these problems, we detected and analyzed part of the plant growth factors in a typical...

To improve the accuracy of automatic recognition and classification of vegetables, this paper presents a method of recognition and classification of vegetable image based on deep learning, using the open source deep learning framework of Caffe, the improved VGG network model was used to train the vegetable...

It is one of the goals of higher mathematics teaching to cultivate students’ realistic spirit, refinement spirit, and the quality of overcoming difficulties by incorporating ideological and political elements in the advanced mathematics classroom. This article explores the methods and means of implementing...

150 teachers and 60 students in six vocational colleges of the south College District, Shijiazhuang City, Hebei Province are extracted and the professional burnout questionnaires and interviews are carried out. According to statistical analysis, it is found that more than 60% of vocational teachers have...

We can conclude that Xi Jinping inherited and developed the Mao Zedong’s theory on literature and art by the comparison of the twice forum on literature and art. They both adhere the people’s principal position in the country, the leadship of the party and the guidance of marxism, they also affirm the...

By micro-arc oxidation technology, the TA2 titanium metal surface modification, by scanning electron microscopy (SEM) experiments, the effects of different voltage parameters on film thickness and surface microstructure were studied. The results show that as the voltage increases and the oxidation time...

Natural ventilation has been an essential building technology for such a long time. As a significant role in the development of architecture design, the natural ventilation was replaced by the development of air conditioning technology for some time. However with the energy crisis and the greenhouse...

We have studied the electronic properties of MgO by first principles (CASTEP program). The calculated band gap of MgO shows MgO is an insulator. Pressure increases the band gap from 4.253 to 7.585 eV. The band above the Fermi level shifts to higher energy, while the band below the Fermi level shifts...

Through the analysis of compound directional verbs with theories of cognitive linguistics such as Image Schema, Construal Operation and Spatialization of Form Hypothesis, we can find the cognitive motivation of the lack of State Meaning of “guolai/guoqu” which derives from the uniqueness of “Path” of...

With the rapid change of UAV technology, micro multi rotor UAV models are constantly updated and iterated, and the methods and means of flight training are also upgraded and improved. The number of tasks for training micro multi rotor UAV operators is increasing, and the training standards are constantly...

Author thoroughly discussed the project cost risk determinants, and to analyze the formation stage of construction project cost risk, building construction project cost risk management mechanism. Author through the study of optimal allocation of resources based on the cost of construction projects planned...

The concept and actions of sustainable development are very important. Be it from the national, corporate, and individual levels, the innovation and entrepreneurship capabilities of enterprises represent a country's national strength. Given this, sustainable development has a profound impact on...

Water supply is a prerequisite for urban development, water development, not only to consider the urban water resources on the socio-economic development of carrying capacity, but also to consider the quality of water, taking into account the water environment and water ecology of the growing water pollution...

The emergence of new communication channels like microblogs, WeChat, brief videos, and live streaming has increased people's access to a wider variety of media thanks to the Internet's ongoing technological innovation. The growth of new media has prompted new demands for business marketing...