In studies on gas hydrate,bottom-simulating reflectors(BSR)are used to determine the potential hydrate-bearing sedimentary layers.Usually,BSR detection is performed manually by experienced interpreters.Therefore,a met...In studies on gas hydrate,bottom-simulating reflectors(BSR)are used to determine the potential hydrate-bearing sedimentary layers.Usually,BSR detection is performed manually by experienced interpreters.Therefore,a method for implementing an auto-matic BSR detection process should be established.In this study,we develop a novel architecture for BSR characterization using the convolutional neural network(CNN)technique.We propose the use of Stokes’transform(ST)to obtain a time-frequency spectrum for the input of CNN.ST fully uses the frequency content of the seismic data,and a part of the 3D seismic data collected from the Blake Ridge is utilized to train the CNN.Synthetic seismic records with variable signal-to-noise ratios(SNR),as well as Blake Ridge seismic data,were used to validate the detection effect of the CNN.Results show that the CNN trained by this method exhibits excellent performance in noise-resistant testing and achieves an accuracy of more than 89% in field seismic data detection.展开更多
There are many"little boys"images in Blake's poems, which is worth further analyzing. Accordingly, by observing and analyzing the boy images in William Blake's poems, this essay will explore the poet...There are many"little boys"images in Blake's poems, which is worth further analyzing. Accordingly, by observing and analyzing the boy images in William Blake's poems, this essay will explore the poet's developing attitude towards the vulnerable group.展开更多
William Blake utilized ingenious language in his creation of the poem London.Foregrounding and deviation are well practised in this poem.In rhyme pattern,the poem takes end rhyme,consonance,alliteration and internal r...William Blake utilized ingenious language in his creation of the poem London.Foregrounding and deviation are well practised in this poem.In rhyme pattern,the poem takes end rhyme,consonance,alliteration and internal rhyme.In rhythm pattern,the poem mainly uses iambic tetrameter along with the variation of three troches and one single stress at the end of lines which produces a shocking atmosphere.Among syntax features,emphatic pattern and anticipatory structure are used.Among lexical features,the reiteration of specific words makes neat euphonious parallelism while the subtle pun word create a far-reaching artistry.展开更多
William Blake(1757-1827) is a renowned British poet in the 18th centrury. His lyric poems displays the characteristics of romantic spirit, and he is regarded as the forefather of the British Romanticism. His London is...William Blake(1757-1827) is a renowned British poet in the 18th centrury. His lyric poems displays the characteristics of romantic spirit, and he is regarded as the forefather of the British Romanticism. His London is a well-known lyric poetry, which is thought to be the best versicle in the West. Now let's analyse this poem in terms of its theme, image and form and then draw a brief conclusion for the Characteristics of William Blake's poem.展开更多
基金supported by the Fundamental Research Funds for the Central Universities(No.202262012)the National Natural Science Foundation of China(No.42076224)the National Key R&D Program of China(No.2021YFC2801200).
文摘In studies on gas hydrate,bottom-simulating reflectors(BSR)are used to determine the potential hydrate-bearing sedimentary layers.Usually,BSR detection is performed manually by experienced interpreters.Therefore,a method for implementing an auto-matic BSR detection process should be established.In this study,we develop a novel architecture for BSR characterization using the convolutional neural network(CNN)technique.We propose the use of Stokes’transform(ST)to obtain a time-frequency spectrum for the input of CNN.ST fully uses the frequency content of the seismic data,and a part of the 3D seismic data collected from the Blake Ridge is utilized to train the CNN.Synthetic seismic records with variable signal-to-noise ratios(SNR),as well as Blake Ridge seismic data,were used to validate the detection effect of the CNN.Results show that the CNN trained by this method exhibits excellent performance in noise-resistant testing and achieves an accuracy of more than 89% in field seismic data detection.
文摘There are many"little boys"images in Blake's poems, which is worth further analyzing. Accordingly, by observing and analyzing the boy images in William Blake's poems, this essay will explore the poet's developing attitude towards the vulnerable group.
文摘William Blake utilized ingenious language in his creation of the poem London.Foregrounding and deviation are well practised in this poem.In rhyme pattern,the poem takes end rhyme,consonance,alliteration and internal rhyme.In rhythm pattern,the poem mainly uses iambic tetrameter along with the variation of three troches and one single stress at the end of lines which produces a shocking atmosphere.Among syntax features,emphatic pattern and anticipatory structure are used.Among lexical features,the reiteration of specific words makes neat euphonious parallelism while the subtle pun word create a far-reaching artistry.
文摘William Blake(1757-1827) is a renowned British poet in the 18th centrury. His lyric poems displays the characteristics of romantic spirit, and he is regarded as the forefather of the British Romanticism. His London is a well-known lyric poetry, which is thought to be the best versicle in the West. Now let's analyse this poem in terms of its theme, image and form and then draw a brief conclusion for the Characteristics of William Blake's poem.
