When conducting dynamic tests of underground structure by a rigid container, reasonable boundary conditions are one of the essential factors related to the accuracy of test results, especially the artificial boundary ...When conducting dynamic tests of underground structure by a rigid container, reasonable boundary conditions are one of the essential factors related to the accuracy of test results, especially the artificial boundary perpendicular to the excitation direction. On the basis of numerous studies, shaking table tests with four different typical boundaries are performed in this study. The tests consider the seismic intensity and seismic wave types. Then, the simulation effects of the four boundary conditions are evaluated from four aspects as follows: the differential rate of peak acceleration, acceleration curve, similarity of Fourier frequency spectra, and uneven soil settlement in rigid containers. Results show that the simulation effects of the boundary conditions are not only affected by the nature of the boundary material but also related to the seismic intensity, types of seismic waves, and filter characteristic of the filling medium in containers. In comparison with the other three types of boundary condition, foamed polyethylene shows the best simulation effect and its effect decreases gradually with the increase in earthquake intensity. Finally, on the basis of existing studies, the evaluation criteria of boundary effect, the principle for the selection of boundary material type and the thickness of boundary material are discussed and summarized, and the corresponding design methods and suggestions are then provided.展开更多
The idea of Cyborg initiates the blurring of frontiers between traditional gender roles in the post-modem era, transforming itself into a politicized entity. William Gibson＇s Neuromancer as an early introducer of the...The idea of Cyborg initiates the blurring of frontiers between traditional gender roles in the post-modem era, transforming itself into a politicized entity. William Gibson＇s Neuromancer as an early introducer of the Cyborg characters tries to dissolve the boundaries through his female characters by balancing the power quota with the help of the non-gendered entity of the Cyborg. According to Donna Haraway, there will be a dawn of new cyborg era causing a gender role reversal. The objective of this paper is to find whether such role reversal is at all possible.展开更多
As scholars have begun the digitization of the word＇s cultural materials, the understanding of what is to be digitized and how that digitization occurs remains narrowly imagined, with a distinct bias toward North Ame...As scholars have begun the digitization of the word＇s cultural materials, the understanding of what is to be digitized and how that digitization occurs remains narrowly imagined, with a distinct bias toward North American and European notions of culture, value and ownership. Humanists are well aware that cultural knowledge, aesthetic value and copyright/ownership are not monolithic, yet digital humanities work often expects the replication of narrow ideas of such. Drawing on the growing body of scholarship that situates the digital humanities in a broad global context, this paper points to areas of tension within the field and posits ways that digital humanities practitioners might resist such moves to homogenize the field. Working within the framework of border studies, the paper considers how working across national barriers might further digital humanities work. Finally, ideas of ownership and/or copyright are unique to country of origin and, as such, deserve careful attention. While open access is appealing in many digital humanities pro- jects, it is not always appropriate, as work with indigenous cultural artifacts has revealed.展开更多
基金Projects(51978669,U1734208)supported by the National Natural Science Foundation of ChinaProject(2018JJ3657)supported by the Natural Science Foundation of Hunan Province,China
文摘When conducting dynamic tests of underground structure by a rigid container, reasonable boundary conditions are one of the essential factors related to the accuracy of test results, especially the artificial boundary perpendicular to the excitation direction. On the basis of numerous studies, shaking table tests with four different typical boundaries are performed in this study. The tests consider the seismic intensity and seismic wave types. Then, the simulation effects of the four boundary conditions are evaluated from four aspects as follows: the differential rate of peak acceleration, acceleration curve, similarity of Fourier frequency spectra, and uneven soil settlement in rigid containers. Results show that the simulation effects of the boundary conditions are not only affected by the nature of the boundary material but also related to the seismic intensity, types of seismic waves, and filter characteristic of the filling medium in containers. In comparison with the other three types of boundary condition, foamed polyethylene shows the best simulation effect and its effect decreases gradually with the increase in earthquake intensity. Finally, on the basis of existing studies, the evaluation criteria of boundary effect, the principle for the selection of boundary material type and the thickness of boundary material are discussed and summarized, and the corresponding design methods and suggestions are then provided.
文摘The idea of Cyborg initiates the blurring of frontiers between traditional gender roles in the post-modem era, transforming itself into a politicized entity. William Gibson＇s Neuromancer as an early introducer of the Cyborg characters tries to dissolve the boundaries through his female characters by balancing the power quota with the help of the non-gendered entity of the Cyborg. According to Donna Haraway, there will be a dawn of new cyborg era causing a gender role reversal. The objective of this paper is to find whether such role reversal is at all possible.
文摘As scholars have begun the digitization of the word＇s cultural materials, the understanding of what is to be digitized and how that digitization occurs remains narrowly imagined, with a distinct bias toward North American and European notions of culture, value and ownership. Humanists are well aware that cultural knowledge, aesthetic value and copyright/ownership are not monolithic, yet digital humanities work often expects the replication of narrow ideas of such. Drawing on the growing body of scholarship that situates the digital humanities in a broad global context, this paper points to areas of tension within the field and posits ways that digital humanities practitioners might resist such moves to homogenize the field. Working within the framework of border studies, the paper considers how working across national barriers might further digital humanities work. Finally, ideas of ownership and/or copyright are unique to country of origin and, as such, deserve careful attention. While open access is appealing in many digital humanities pro- jects, it is not always appropriate, as work with indigenous cultural artifacts has revealed.
