保障教学科研信息的丰富与畅通是高校图书馆的根本使命。在概述美国版权结算中心的即时获取(Get It Now)服务的基础上,聚焦其在美国高校图书馆的应用,通过对实践主体、实践过程、实践效果三方面的详细调研,进一步明确其对于图书馆文献...保障教学科研信息的丰富与畅通是高校图书馆的根本使命。在概述美国版权结算中心的即时获取(Get It Now)服务的基础上,聚焦其在美国高校图书馆的应用,通过对实践主体、实践过程、实践效果三方面的详细调研,进一步明确其对于图书馆文献服务和馆藏开发的实际意义,并由此提炼出Get It Now作为一种资源、一项服务和一种工具的创新价值。展开更多
为了引进和推广GET(Methane gas as renewable energy at rice fields tian)技术,并有效改善土壤肥力,开展了基于GET技术的农家肥和水稻秸秆混合厌氧发酵,生产生物甲烷的田间试验。通过对利用和未利用该技术的土壤全氮、全磷、有机质含...为了引进和推广GET(Methane gas as renewable energy at rice fields tian)技术,并有效改善土壤肥力,开展了基于GET技术的农家肥和水稻秸秆混合厌氧发酵,生产生物甲烷的田间试验。通过对利用和未利用该技术的土壤全氮、全磷、有机质含量的测定,探讨了试验过程中农家肥类型(猪粪和牛粪)、水稻秸秆施用量2个试验因子及其交互作用对土壤肥力的影响。试验结果表明,农家肥类型、水稻秸秆施用量及其交互作用均对土壤肥力产生了一定影响。农家肥类型对土壤有机质含量有极显著影响,其中,以猪粪+水稻秸秆处理对土壤有机质含量的促进效果较好,其土壤有机质含量比牛粪+水稻秸秆、水稻秸秆处理分别提高7.67%、29.86%,水稻秸秆处理土壤全氮、全磷含量相比对照分别增加35.72%、 59.97%。水稻秸秆施用量对土壤有机质、全磷含量分别有极显著、显著影响,不同施用量的水稻秸秆使土壤全氮、全磷、有机质含量最高分别增加24.70%、71.12%、156.15%,但水稻秸秆施用量超过100 kg/垄以后,土壤有机质含量的增加不再显著。2种农家肥+水稻秸秆配比中,均以农家肥∶水稻秸秆(质量比)=120∶125对土壤的增肥效果较好。展开更多
This paper proposes a new method for estimating the parameter of maneuvering targets based on sparse time-frequency transform in over-the-horizon radar（OTHR）. In this method, the sparse time-frequency distribution o...This paper proposes a new method for estimating the parameter of maneuvering targets based on sparse time-frequency transform in over-the-horizon radar（OTHR）. In this method, the sparse time-frequency distribution of the radar echo is obtained by solving a sparse optimization problem based on the short-time Fourier transform. Then Hough transform is employed to estimate the parameter of the targets. The proposed algorithm has the following advantages： Compared with the Wigner-Hough transform method, the computational complexity of the sparse optimization is low due to the application of fast Fourier transform（FFT）. And the computational cost of Hough transform is also greatly reduced because of the sparsity of the time-frequency distribution. Compared with the high order ambiguity function（HAF） method, the proposed method improves in terms of precision and robustness to noise. Simulation results show that compared with the HAF method, the required SNR and relative mean square error are 8 dB lower and 50 dB lower respectively in the proposed method. While processing the field experiment data, the execution time of Hough transform in the proposed method is only 4% of the Wigner-Hough transform method.展开更多
Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was ...Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was Bajocian to early Bathonian,obviously earlier than in south Europe, middle Asia,and Siberia.展开更多
We summarized the interpretations of syntactic structure of English get-passive based on the analyses of passive get and the get-passive. We conclude that the passive get in get-passive equals to a lexical verb consid...We summarized the interpretations of syntactic structure of English get-passive based on the analyses of passive get and the get-passive. We conclude that the passive get in get-passive equals to a lexical verb considering its syntactic representation and the get-passive represent itself as an actional passive of which the subject is responsible for the event denoted by the action.Concerning the interpretation, we consider get-passive as a reflexive ECM(exceptional case-marking)-construction.展开更多
The contemporary English novelist and literary critic David Lodge has published sixteen works of fiction,including the latest published short story collections The Man Who Wouldn't Get Up and Other Stories(2016).I...The contemporary English novelist and literary critic David Lodge has published sixteen works of fiction,including the latest published short story collections The Man Who Wouldn't Get Up and Other Stories(2016).In this work,the first story The Man Who Wouldn't Get Up is the earliest one which was written in the winter of 1965-1966 and mainly tells about a professional man who refuses to get up in order to escape the harsh world and I chiefly discuss the paratexts of it.Gerard Genette defines paratexts as"are those liminal devices and conventions,both within and outside the book,that form part of the complex mediation between book, author, publisher, and reader:titles,forewords,epigraphs,and publishers'jacket copy are part of a book's private and public history."In this paper,I adopt Genette's theory of paratexts which provides a unique theoretical approach for fiction study and apply it to the analysis of Lodge's The Man Who Wouldn't Get Up and Other Stories.The work is rich in miscellaneous paratexts which are one of the characteristics of this work and aid comprehension while shortening the distance between author and reader.The paper mainly examines the peritext:the elements inserted into the interstices,such as,the cover,title,epigraph,biography of the author,reviews of the book,foreword,jacket copy,illustration,dedication,afterword and acknowledgements.Investigating the peritexts of the work indicates the unique function and the significance of the thresholds of interpretation to the fictional text.Ultimately,they become the medium of communication between the author,the text and the reader,and are exemplary of Lodge's creativity and hybrid narrative style.展开更多
文摘保障教学科研信息的丰富与畅通是高校图书馆的根本使命。在概述美国版权结算中心的即时获取(Get It Now)服务的基础上,聚焦其在美国高校图书馆的应用,通过对实践主体、实践过程、实践效果三方面的详细调研,进一步明确其对于图书馆文献服务和馆藏开发的实际意义,并由此提炼出Get It Now作为一种资源、一项服务和一种工具的创新价值。
文摘为了引进和推广GET(Methane gas as renewable energy at rice fields tian)技术,并有效改善土壤肥力,开展了基于GET技术的农家肥和水稻秸秆混合厌氧发酵,生产生物甲烷的田间试验。通过对利用和未利用该技术的土壤全氮、全磷、有机质含量的测定,探讨了试验过程中农家肥类型(猪粪和牛粪)、水稻秸秆施用量2个试验因子及其交互作用对土壤肥力的影响。试验结果表明,农家肥类型、水稻秸秆施用量及其交互作用均对土壤肥力产生了一定影响。农家肥类型对土壤有机质含量有极显著影响,其中,以猪粪+水稻秸秆处理对土壤有机质含量的促进效果较好,其土壤有机质含量比牛粪+水稻秸秆、水稻秸秆处理分别提高7.67%、29.86%,水稻秸秆处理土壤全氮、全磷含量相比对照分别增加35.72%、 59.97%。水稻秸秆施用量对土壤有机质、全磷含量分别有极显著、显著影响,不同施用量的水稻秸秆使土壤全氮、全磷、有机质含量最高分别增加24.70%、71.12%、156.15%,但水稻秸秆施用量超过100 kg/垄以后,土壤有机质含量的增加不再显著。2种农家肥+水稻秸秆配比中,均以农家肥∶水稻秸秆(质量比)=120∶125对土壤的增肥效果较好。
基金supported by the National Natural Science Foundation of China(611011726137118461301262)
文摘This paper proposes a new method for estimating the parameter of maneuvering targets based on sparse time-frequency transform in over-the-horizon radar（OTHR）. In this method, the sparse time-frequency distribution of the radar echo is obtained by solving a sparse optimization problem based on the short-time Fourier transform. Then Hough transform is employed to estimate the parameter of the targets. The proposed algorithm has the following advantages： Compared with the Wigner-Hough transform method, the computational complexity of the sparse optimization is low due to the application of fast Fourier transform（FFT）. And the computational cost of Hough transform is also greatly reduced because of the sparsity of the time-frequency distribution. Compared with the high order ambiguity function（HAF） method, the proposed method improves in terms of precision and robustness to noise. Simulation results show that compared with the HAF method, the required SNR and relative mean square error are 8 dB lower and 50 dB lower respectively in the proposed method. While processing the field experiment data, the execution time of Hough transform in the proposed method is only 4% of the Wigner-Hough transform method.
文摘Three flora assemblages of Yima formation, in western Henan are systematically studied. The beginning time from which the climate in this region during the middle Jurassic and the late Jurassic period getting hot was Bajocian to early Bathonian,obviously earlier than in south Europe, middle Asia,and Siberia.
文摘We summarized the interpretations of syntactic structure of English get-passive based on the analyses of passive get and the get-passive. We conclude that the passive get in get-passive equals to a lexical verb considering its syntactic representation and the get-passive represent itself as an actional passive of which the subject is responsible for the event denoted by the action.Concerning the interpretation, we consider get-passive as a reflexive ECM(exceptional case-marking)-construction.
文摘The contemporary English novelist and literary critic David Lodge has published sixteen works of fiction,including the latest published short story collections The Man Who Wouldn't Get Up and Other Stories(2016).In this work,the first story The Man Who Wouldn't Get Up is the earliest one which was written in the winter of 1965-1966 and mainly tells about a professional man who refuses to get up in order to escape the harsh world and I chiefly discuss the paratexts of it.Gerard Genette defines paratexts as"are those liminal devices and conventions,both within and outside the book,that form part of the complex mediation between book, author, publisher, and reader:titles,forewords,epigraphs,and publishers'jacket copy are part of a book's private and public history."In this paper,I adopt Genette's theory of paratexts which provides a unique theoretical approach for fiction study and apply it to the analysis of Lodge's The Man Who Wouldn't Get Up and Other Stories.The work is rich in miscellaneous paratexts which are one of the characteristics of this work and aid comprehension while shortening the distance between author and reader.The paper mainly examines the peritext:the elements inserted into the interstices,such as,the cover,title,epigraph,biography of the author,reviews of the book,foreword,jacket copy,illustration,dedication,afterword and acknowledgements.Investigating the peritexts of the work indicates the unique function and the significance of the thresholds of interpretation to the fictional text.Ultimately,they become the medium of communication between the author,the text and the reader,and are exemplary of Lodge's creativity and hybrid narrative style.
