Predicting the mechanical behaviors of structure and perceiving the anomalies in advance are essential to ensuring the safe operation of infrastructures in the long run.In addition to the incomplete consideration of i...Predicting the mechanical behaviors of structure and perceiving the anomalies in advance are essential to ensuring the safe operation of infrastructures in the long run.In addition to the incomplete consideration of influencing factors,the prediction time scale of existing studies is rough.Therefore,this study focuses on the development of a real-time prediction model by coupling the spatio-temporal correlation with external load through autoencoder network(ATENet)based on structural health monitoring(SHM)data.An autoencoder mechanism is performed to acquire the high-level representation of raw monitoring data at different spatial positions,and the recurrent neural network is applied to understanding the temporal correlation from the time series.Then,the obtained temporal-spatial information is coupled with dynamic loads through a fully connected layer to predict structural performance in next 12 h.As a case study,the proposed model is formulated on the SHM data collected from a representative underwater shield tunnel.The robustness study is carried out to verify the reliability and the prediction capability of the proposed model.Finally,the ATENet model is compared with some typical models,and the results indicate that it has the best performance.ATENet model is of great value to predict the realtime evolution trend of tunnel structure.展开更多
Personal pronoun shift is a common phenomenon that by using second or third personal pronoun,the speaker means first personal pronoun;or speaker means second personal pronoun but uses first or third personal pronoun i...Personal pronoun shift is a common phenomenon that by using second or third personal pronoun,the speaker means first personal pronoun;or speaker means second personal pronoun but uses first or third personal pronoun instead.Since the phe nomenon frequently appears in the Chinese language,a great number of linguists have studied the personal pronoun and the inter pretation of their usage.However,the study for the causes of the phenomenon is not so systemic.This paper aims to explain the personal pronoun shift from the perspective of Cooperative Principle and Politeness Principle,which can help to discover the rela tionship between Cooperative principle and politeness in the shift of personal pronoun.展开更多
基金This work is supported by the National Natural Science Foundation of China(Grant No.51991392)Key Deployment Projects of Chinese Academy of Sciences(Grant No.ZDRW-ZS-2021-3-3)the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant No.2019QZKK0904).
文摘Predicting the mechanical behaviors of structure and perceiving the anomalies in advance are essential to ensuring the safe operation of infrastructures in the long run.In addition to the incomplete consideration of influencing factors,the prediction time scale of existing studies is rough.Therefore,this study focuses on the development of a real-time prediction model by coupling the spatio-temporal correlation with external load through autoencoder network(ATENet)based on structural health monitoring(SHM)data.An autoencoder mechanism is performed to acquire the high-level representation of raw monitoring data at different spatial positions,and the recurrent neural network is applied to understanding the temporal correlation from the time series.Then,the obtained temporal-spatial information is coupled with dynamic loads through a fully connected layer to predict structural performance in next 12 h.As a case study,the proposed model is formulated on the SHM data collected from a representative underwater shield tunnel.The robustness study is carried out to verify the reliability and the prediction capability of the proposed model.Finally,the ATENet model is compared with some typical models,and the results indicate that it has the best performance.ATENet model is of great value to predict the realtime evolution trend of tunnel structure.
文摘Personal pronoun shift is a common phenomenon that by using second or third personal pronoun,the speaker means first personal pronoun;or speaker means second personal pronoun but uses first or third personal pronoun instead.Since the phe nomenon frequently appears in the Chinese language,a great number of linguists have studied the personal pronoun and the inter pretation of their usage.However,the study for the causes of the phenomenon is not so systemic.This paper aims to explain the personal pronoun shift from the perspective of Cooperative Principle and Politeness Principle,which can help to discover the rela tionship between Cooperative principle and politeness in the shift of personal pronoun.
