Guided by the theory of petroleum system, we analyzed the Lower Palaeozoic hydrocarbon accumulation elements and conditions of the Middle uplift of Southern Yellow Sea Basin and concluded the hydrocarbon accumulation pattern. The results showed that: the source rock of lower Palaeozoic in the Middle uplift of Southern Yellow Sea Basin consists of the dark mudstone and carbonate rock; carbonate rock is the main favorable reservoir followed by clastic rock; there are three source-reservoir-cap assemblages; the source rock of Lower Palaeozoic has experienced two hydrocarbon generation stages which are late Silurian and late Middle Triassic; hydrocarbon generated by Lower Palaeozoic source rock can only migrate to the traps near the center of hydrocarbon generation by sandbody and cracks in a short distance; lithologic trap and broad anticlinal trap are the main types in the study area. Through the above analysis, we conclude two accumulation patterns of Lower Palaeozoic in the Middle uplift of Southern Yellow Sea Basin.

Guided by the theory of petroleum system, we analyzed hydrocarbon accumulation elements and conditions of the Shahejie Formation in Tangzhuang area and concluded the hydrocarbon accumulation model based on the geological and geophysical data. Hydrocarbon comes from the source rock of Es3 in Linyi sub-sag located to the southeast of Tangzhuang area. Reservoir mainly is clastic, followed by carbonate. There are 4 source-reservoir-cap assemblages in the Shahejie Formation. The Es3 source rock of different tectonic units in Linnan sub-sag has experienced different hydrocarbon generation stages. The central region experienced two hydrocarbon generation stages while the edge only experienced one stage. The hydrocarbon generated by the source rock of Es3 in Linnan sub-sag mainly migrated to Tangzhuang area along fault and sand body. The structural trap is the dominant type followed by structure-lithologic trap and lithologic trap. Based on the analysis of hydrocarbon accumulation condition, we concluded the lower generating and upper reserving model of the study area. The findings will play an important role in guiding Tangzhuang oil and gas exploration.

Because of the short-term diseconomies and externalities of low-carbon products, effective government intervention becomes a necessary tool for enterprises to produce low-carbon products. Under government regulation, a dynamic evolutionary game model is used for theoretical analysis. And the case data of new energy vehicle enterprises are used for simulation to explore the implementation effects of different punishment mechanisms on enterprises' production of low-carbon products. The results show that: (i) in the game between government and enterprises, consumers' green preferences, the differentiation between low-carbon products and high-carbon products, including the difference in cost and environmental friendliness, the market demand, and the purchase cost are important factors affecting game strategies. (ii) Under traditional regulatory, both the static and dynamic penalty mechanisms are favorable for enterprises to adopt the strategy of producing low-carbon products. What' more, the stronger the penalty, the faster the enterprises transform to produce low-carbon products. (iii) Under Internet regulatory, the strong dynamic penalty mechanism can better promote enterprises to produce low-carbon products, while the static penalty mechanism can't promote enterprises to produce low-carbon products effectively. On this basis, it is suggested that while regulating enterprises' production behavior, the government could also increase the demand for green consumption to pull enterprises to produce low-carbon products. In addition, it is suggested that the government's regulatory approach should be matched with the penalty mechanism, and the synergistic effect among regulatory instruments should be skillfully utilized, so as to promote the process of sustainable social development.

Satellite solar panel bears with crucial responsibility in supplying energy while satellite orbits the moon. Through analyzing the vibration mode of solar panel, the structure’s natural frequency and inherent vibration vector can be obtained, which is of vital importance to structure dynamic modification, structure optimization design and fault diagnosis.This article summarizes the experimental results and analysis of solar panel under vibration with the aid of LDV. Through binary channel fast Fourier Transform (FFT), combined with modal analysis theories and software analysis system, a modal model of solar panel is built. Such an modal model provides a basis for the determination of the physical and structural parameters in the solar panel design of a satellite and provides an analysis method for the reliability validation of the design and the operating reliability of the satellite.

Using finite difference inequalities, we study the boundedness of random solutions of the stochastic perturbation discrete system of the linear stochastic discrete system. The stochastic perturbation discrete system includes an operator. We obtain the conditions under which the random solutions of the stochastic perturbation discrete system are bounded.