A model of dynamic programming for repairing strategies of concrete structures during a projected service period is proposed, which takes into account the degradation in strength of components and the probability of a...A model of dynamic programming for repairing strategies of concrete structures during a projected service period is proposed, which takes into account the degradation in strength of components and the probability of accidental load. This model takes the safety grade of a structural system as the state variable of repairing strategies, and incorporates economic factors including expected repair cost, property loss due to structure failure, goods and material loss due to structure failure, loss of production interrupt due to structure failure, and inspection cost in decision making. It is found that the optimal repairing strategies are sensitive to the probability of accidental loads as well as the failure costs. The practicality of the model is demonstrated by an example.展开更多
Self-repair mentioned in this paper actually refers to self-initiated same-turn self-repair,which comprises a particular set of repair strategies in which trouble source and repairing segments occur in the same turn a...Self-repair mentioned in this paper actually refers to self-initiated same-turn self-repair,which comprises a particular set of repair strategies in which trouble source and repairing segments occur in the same turn and the repair is both initiated and performed by the speaker of trouble source. This study aims to study the self-repair behaviour of Chinese EFL learners based on the Spoken English Corpus of Chinese Learners as the observing corpus and the reference corpus SBNC. This study is mainly concerned with use frequency,distributions and structures of the selfrepair on the basis of a clear classification of the self-repair,aiming to find out whether there are significant differences in these three aspects of the self-repair between the Chinese EFL learners and the native speakers. Some implications and applications of the findings are also available for English teaching and learning in China.展开更多
基金Funded by the National Key Project on Basic Research and Applied Research (85-40).
文摘A model of dynamic programming for repairing strategies of concrete structures during a projected service period is proposed, which takes into account the degradation in strength of components and the probability of accidental load. This model takes the safety grade of a structural system as the state variable of repairing strategies, and incorporates economic factors including expected repair cost, property loss due to structure failure, goods and material loss due to structure failure, loss of production interrupt due to structure failure, and inspection cost in decision making. It is found that the optimal repairing strategies are sensitive to the probability of accidental loads as well as the failure costs. The practicality of the model is demonstrated by an example.
文摘Self-repair mentioned in this paper actually refers to self-initiated same-turn self-repair,which comprises a particular set of repair strategies in which trouble source and repairing segments occur in the same turn and the repair is both initiated and performed by the speaker of trouble source. This study aims to study the self-repair behaviour of Chinese EFL learners based on the Spoken English Corpus of Chinese Learners as the observing corpus and the reference corpus SBNC. This study is mainly concerned with use frequency,distributions and structures of the selfrepair on the basis of a clear classification of the self-repair,aiming to find out whether there are significant differences in these three aspects of the self-repair between the Chinese EFL learners and the native speakers. Some implications and applications of the findings are also available for English teaching and learning in China.
