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This paper uses the ARIMA model in time series and the BLSTM sentiment classification algorithm in sentiment analysis to predict the elements and the direction of traditional music heritage. Differential processing of non-smooth series data stabilizes the time series data of traditional music inheritance. By extracting all the features contained in the sheet music, the interpreted sheet music is subjected to sentiment analysis to further analyze the inheritable elements of traditional music. The results show that the time series model has high accuracy in predicting the inheritable elements of traditional music, the MAPE value of the ARIMA model is 5.9658308, and the melody, as well as the structure of traditional music, can be integrated into piano teaching in colleges and universities to a certain extent, with the integration degree of the melody being 0.72 and the integration degree of the structure is 0.655.

Seismic velocity plays an important role in imaging and identifying underground geology. Conventional seismic velocity inversion methods, like full waveform inversion, directly update the velocity model based on the misfit between the observed and synthetic data. However, seismic velocity inversion is a highly nonlinear process, and the inversion effect greatly relies on the initial inversion model. In this paper, we propose a novel network‐domain full waveform inversion method. Different from the existing network‐domain full waveform inversion methods, which use random or fixed numbers as network input, we reparameterize the low‐dimensional acoustic velocity model in a high‐dimensional inversion network parameter domain with seismic observed data as the network input. In this way, the physical information within the observed data can be directly encoded into the inversion parameters, leading to a better inversion effect than the current network‐domain full waveform inversion method. Moreover, comparison experiments on the Society of Exploration Geophysicists and the European Association of Geoscientists and Engineers Overthrust model and the Marmousi model show the advantages of the proposed method over conventional full waveform inversion from the aspects of inversion accuracy, robustness to noisy data, and more complex geological structures. These advantages may benefit from the fact that reparameterization within the inversion network domain can empower the inversion process with the regularization ability of denoising and mitigating the cycle‐skipping issue. In the end, the potential of the proposed method in terms of network initialization is further discussed. [ABSTRACT FROM AUTHOR]

A double rubber dam with the upper dam inflated by air and lower dam inflated by water is proposed in this paper. Large-scale physical hydraulic model tests are carried out to investigate the influence of the inflated air and water pressures, external water levels, anchoring distances, and cross-sectional perimeter ratios on the static response of the proposed structure. This study reveals that the optimum inflated air pressure in the upper dam is 0.25γwL1 and that in the lower dam is 0.45γwL1 , where γw and L1 are the unit weight of water and perimeter of the upper dam. The optimum anchoring distance is 0.06L1 , and the optimum perimeter ratio of the lower to upper dams is 0.9. Under the same external water depth, the material requirements of the proposed rubber dam are 105.8%–126% of the traditional rubber dam, and the tensile strength is 29.6%–48.8%. Considering the perimeter and tensile strength requirements, the total material costs of the air- and water-inflated double rubber dams are only 11.5%–24.2% of the traditional rubber dam. [ABSTRACT FROM AUTHOR]

Traditional methods of suction caisson foundation design only consider the soil is under either purely drained or purely undrained conditions and ignore the effects of the excess pore water pressure (EPWP). A series of triaxial extension stress path tests were conducted in this article to evaluate the effects of the loading rate on the development of EPWP and soil strength. The soil specimens were consolidated under pressures of 60, 80, and 100 kPa and then unloaded at seven different loading rates. It is found that the EPWP and soil strength are heavily influenced by the loading rate. The EPWP tends to be negative at small axial strain and then increases to be positive with the increase of axial strain. The normalized deviatoric stress versus loading rate curves are in the backbone curve. The minimum deviatoric strength happens when the normalized loading rate Vref=5 and linearly increases with the increase of consolidation pressure with the slope of −0.715. The magnitude of the slope of the critical state line in p′ – q space is heavily influenced by the loading rate. [ABSTRACT FROM AUTHOR]

The air‐inflated rubber dam is innovatively adopted in this paper for temporary flood‐fighting at the subway entrance. Numerical studies using the FLAC2D software are carried out to investigate the behavior of the proposed structure. Laboratory model tests are also conducted to verify the accuracy of the numerical model. The results from the model tests agree well with those from the numerical analysis. Parametric studies are carried out to investigate the influences of the external floodwater head, inflated air pressure, and anchor position on the performance of the proposed air‐inflated rubber dam. It is found that the external floodwater head reduces the tensile force but nonlinearly increases the height of the rubber dam. The inflated air pressure has no obvious effect on the cross‐section of the rubber dam but heavily influences the ultimate flood‐fighting height and tensile force. An optimum design line for the inflated air pressure of the rubber dam is provided. A deeper anchor position results in a smaller ultimate flood‐fighting height. A rubber dam design with a lower anchor depth that has to satisfy the requirements of the anchor bolt is therefore concluded. [ABSTRACT FROM AUTHOR]

The phenomenon of cooperative advertising in the market has always been widespread. Considering a supply chain consisting of one manufacturer and multiple retailers with competitive relationships, we explore advertising strategies for deteriorating items when market demand is affected by reference price. By establishing a differential game model, the equilibrium advertising strategies and supply chain profits under different situations are analysed from a long-term and dynamic perspective under decentralised and centralised control, and the trajectories of goodwill and reference prices over time are presented. The conclusions derived provide implications for managers to design optimal advertising strategies. [ABSTRACT FROM AUTHOR]