摘要：Rilke＇s Orpheus sonnet 27 runs, ＂Does it truly exist： time the destroyer？ / When topples the tower atop the peacefulheight？ / This heart belonging to the gods forever,/When will the demi-urge send it with dire might？＂ And it isprecisely on the destructing force of time that Jennifer Egan constructs her narrative upon. A Visit From the GoonSquad is exactly Orpheus and Eurydice＇s myth revisited, and she focuses on the tragedy of decline in 21 st centuryAmerica. A variety of characters unfulfilled lives conform the map of New York City, and Orpheus lyre hasbecome a rock and roll group, The Conduits, as a sort of misconnecting force in the lives of them all. A carefulliterary distance gives an impressionistic vision of inevitability and opportunity lost. My approach focuses on thedifferent interpretations of the classic myth, and on how Rilke＇s rhetorical questions offer an eclectic and metallicanswer in Jennifer Egan＇s contemporary view.

摘要：Following the theory of Trauma as a critical approach, it is analyzed how Paul Auster＇ s Timbuktu shows up the maladies of the contemporary world with a parody of disease full of excess and somehow mocking at its own elements. It is a distorted version of infirmity, the way it used to appear in former works of literature. The device is a winkle to the reader to envisage whatever novel or story from a carefully distanced view, very much in the way that Postmodernist authors do but with the realistic use of the form that he regularly employs.

摘要：The study is meant to describe the evolution of American short-story writing with patterns where visual images have become central and not peripheral for the understanding of stories. Hemingway＇s use of objective correlatives was a trace mark, and the literary editors at The New Yorker urged their writers to slow down the emphasis on movement and plot in order to recreate a certain mood which would favour the perception of objects, anecdotes, and details. The impressionistic device works very much in the same way that an advertisement would do. It is meant to persuade the audience. The apparently non-commitant vision of reality shows in fact the author＇s point of view. The apparent simplicity is meant for a very wide audience and its deepest meaning suggests the scope of the particular visual aids working at the deepest level of consciousness

摘要：研究了两类含Riemann-Liouville分数阶导数的分数阶微分方程两点边值问题。理论上,通过引入分数阶Green函数将含有Riemann-Liouville分数阶导数的两点边值问题等价转换成一个积分方程;并用Lipschitz条件和压缩映射原理给出了含有Riemann-Liouville分数阶导数的两点边值问题的解存在唯一的充分条件;数值上,设计了单打靶法,把含Riemann-Liouville分数阶导数的两点边值问题转化为含Riemann-Liouville分数阶导数的初值问题进行求解,并给出了较为精确的数值解。仿真结果表明:单打靶法是数值求解此类分数阶微分方程两点边值问题的有效工具。