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With the implementation of the rural revitalization strategy, the scale of entrepreneurial groups returning home in China has gradually grown and has become the main force to promote the development of rural industries. In this wave of returning home to start businesses, facing six different modes of rural industrial integration, the development of rural industrial integration in China is facing the imbalance between supply and demand of talents. In terms of supply, labor skills, educational background and entrepreneurial employment motivation of returning entrepreneurs are obviously different. In terms of demand, there are also differences in the quantity, scale and skill structure of industrial talents in different rural industrial integration modes. Analyzing the gap between supply and demand of industrial talents and their differences, and introducing and cultivating all kinds of urgently needed talents in a targeted manner can put forward relevant policy suggestions for the integrated development of rural industries in China. [ABSTRACT FROM AUTHOR]

The digital economy is gradually becoming a powerful engine for high-quality economic development in China and plays an important role in the construction of digital villages and the integrated development of rural industries. Starting from the mechanism of reducing transaction costs in the digital economy, it is a feasible perspective to analyze the role of the digital economy in promoting the integration and development of rural industries in China. This paper evaluates the impact of the digital economy on the development of rural industries in China, analyzes the current situation and problems in the construction of digital villages in China, and uses transaction cost theory to analyze the role of digital technology applications in reducing transaction costs in agricultural production, sales, and financial services. It finds out various rural industrial integration modes formed in the process of digital rural construction, and proposes policy suggestions to promote the integrated development of digital economy and rural industries in China. [ABSTRACT FROM AUTHOR]

The culture in the laboratory plays a significant role in its development. The innovation of the laboratory counts a lot for the achievement of the cultural development goals, and also works as a necessary condition for developing our country through science and technology. This paper analyses the personnel development and the system construction, the innovative environment and the updated concepts. Meanwhile, it also pays enough attention to the major obstacles in the laboratory culture development in China's colleges. Famous theories advanced home and abroad are borrowed and successful cases are analyzed. The paper, in general, focuses on three major tasks; teaching, research and personality development. Planned construction is the top priority; system development plays the basic role; and personality cultivation works as the fundamental approach. Given the importance of the laboratory culture innovation, this work particularly stresses the fulfillment of the initiatives in "human being", so as to maximize the marginal effects of various positive resources which offers a new developing orientation for the laboratory culture innovation. [ABSTRACT FROM AUTHOR]

Acoustic hyperbolic metamaterials are artificial materials with hyperbolic dispersion characteristics and strong anisotropy. Their negative refractive properties are the theoretical basis for studying the implementation of high-resolution focused superlenses. In response to the problem that the recognition of far-field noise sources is limited by the resolution of 0. 5 times wavelength acoustic Rayleigh diffraction recognition, combined with the excellent control effect of acoustic metamaterials on sound waves, a hyperbolic metamaterial that can achieve sub wavelength super-resolution imaging is introduced, and its negative refractive characteristics are used to design an acoustic hyperbolic structure for working at a frequency of 2 271. 5 Hz. The dispersion and negative refraction characteristics of the hyperbolic structure of this configuration were analyzed, and the results show that, the group velocity direction of sound waves propagating in this hyperbolic metamaterial is perpendicular to the wave vector and follows the normal direction of the dispersion curve. The research in this paper provides some design references for realizing arbitrary regulation of sound wave and elastic wave, as well as focusing, locating, identifying and amplifying noise sources. [ABSTRACT FROM AUTHOR]

Objective To study the effect of repeated recial exposure of low -dose simian immunodeficiency virus on the systemic cellular immunity in monkeys. Methods Eighl 3-to 4-year old rhesus macaques (Macaca mulatto) (male; female were used in this study. The monkeys were inoculated with 10 TCID50SI Vmac239 virus through rectum twice a week for consecutive 6 weeks lo establish a multiple rectal exposure model of SIVniac 239 virus infection. Then. plasma viral load, CD4+ T cell count, T cell subsets and LFN-γ secretion of the experiment monkeys were determined. Results Low-dose SlVmac239 vi rus induced some changes in the immune system through the rectal mucosa, but didn't induce typical infection. Repealed rectal mucosal low-dose virus exposure can activate the cellular immune system. Conclusions This study defines the effect of repeated low -dose simian immunodeficiency virus exposure on the systemic cellular immunity, and provided basic information for HIV -4 vaccine research. [ABSTRACT FROM AUTHOR]

ZnWO4 materials were prepared by citrates sol-gel method. The effect of sintering temperature on preparation process of samples was studied. The thermo-decomposing process of the precursor was analyzed by TG/DSC; the crystal structure and morphology of samples were characterized by XRD and SEM, and the electrochemical performance was tested by continuous current charge-discharge, cyclic voltammetry (CV) and electrochemical impedance spectroscopy ( EIS ). The results showed that the materials prepared at 550 °C had well developed crystal structure and better electrochemical properties with the first discharge specific capacity of 446.29 mAh/g and the reversible specific capacity of 200.7 mAh/g after cycle 20 times, specific capacity decayed slowly, charge and discharge efficiency was also high, and it showed a good cycle performance. [ABSTRACT FROM AUTHOR]

Determination of the threshold value is the key to chaos-based weak signal detection. The precision of the threshold value invariably defined the precision of the detection. Currently, determining the threshold value by observing the phase space trajectory could hardly satisfy the demand for an accurate threshold value in a short time, while the Lyapunov index method was complicated and it took a lot of time and computing resources, which was not convenient to program on the GPU platform. Comparably, the detecting method based on zero-crossing number could achieve an accurate threshold value with lower computing resources and complexity, which could well applied to the modern high performance programmable GPU. By using the zero-crossing number criterion, this paper proposed a new parallel algorithm of detecting the accurate threshold value based on GPU platform. Experiments show that the parallel algorithm based on GPU can accelerate the determination of the threshold value up to 90 times compared with the single-thread algorithm at the amplitude step length of 10. This parallel algorithm brings light to the quick detection of the threshold value of different chaos detecting system. [ABSTRACT FROM AUTHOR]

This paper was concentrated on background, motivation and the state of arts in privacy issues for wireless body area networks. It introduced the attack model and security goal. Existing research results were classified according two angles which were privacy preservation of data information and privacy preservation of environment information. It described every type of the key techniques, and then summarized, analyzed and compared the main advantages and disadvantages of these techniques. Taking account of every type of application requirements, it put forward several possible future trends and research directions respectively. [ABSTRACT FROM AUTHOR]