The hazard caused by the fragments of damaged structures is usually significant in acci-dental explosions or hostile blast events.A reliable and efficient method to estimate probable fragment size,velocity and launch ...The hazard caused by the fragments of damaged structures is usually significant in acci-dental explosions or hostile blast events.A reliable and efficient method to estimate probable fragment size,velocity and launch distance will be useful to assess and design countermeasures to mitigate the possible fragment hazards.This paper presents a numerical method for predicting the size and launch distance of the fragments caused by explosive damage of masonry wall.Numerical simulations with different scaled distances are carried out,and the statistical distribution functions of the fragment size and launch distance in terms of the scaled distance are derived.展开更多
The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female...The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female individuality and sexuality. The Victorian era had a profound impact on social values in the United States, stressing that women were to behave gracefully and remain within the domestic sphere. The novel takes place in a country house located about three miles from the nearest village. The Setting has the appearance of tranquility, but is actually a place of confinement--There are bars on the windows of the nursery, and the bed is secured to the floor The isolated location of the house, its somewhat neglected condition, and her further isolation in the fortress-like nursery, symbolize the narrator＇s mental condition. Several symbols are employed in the story to reveal the oppression of women by men and the struggle against that male dominated society. The yellow wallpaper is symbolic of the Cult of True Womanhood, which binds women to the home and family. Like Charlotte Gilman, women were constricted to the set parameters that men determined. Getting beyond the yellow wallpaper, women defied the corrupted power that men wielded over women, escaped their confinement, and created for themselves a new ideological role, one that included entry into the public sphere展开更多
基金Supported by the Australian Research Council (ARC,No.DP0774061)National Natural Science Foundation of China (No.50638030 and 50528808).
文摘The hazard caused by the fragments of damaged structures is usually significant in acci-dental explosions or hostile blast events.A reliable and efficient method to estimate probable fragment size,velocity and launch distance will be useful to assess and design countermeasures to mitigate the possible fragment hazards.This paper presents a numerical method for predicting the size and launch distance of the fragments caused by explosive damage of masonry wall.Numerical simulations with different scaled distances are carried out,and the statistical distribution functions of the fragment size and launch distance in terms of the scaled distance are derived.
文摘The Yellow Wallpaper examines the role of women in 19th-century American society, including the relationship between husbands and wives, the economic and social dependence of women on men, and the repression of female individuality and sexuality. The Victorian era had a profound impact on social values in the United States, stressing that women were to behave gracefully and remain within the domestic sphere. The novel takes place in a country house located about three miles from the nearest village. The Setting has the appearance of tranquility, but is actually a place of confinement--There are bars on the windows of the nursery, and the bed is secured to the floor The isolated location of the house, its somewhat neglected condition, and her further isolation in the fortress-like nursery, symbolize the narrator＇s mental condition. Several symbols are employed in the story to reveal the oppression of women by men and the struggle against that male dominated society. The yellow wallpaper is symbolic of the Cult of True Womanhood, which binds women to the home and family. Like Charlotte Gilman, women were constricted to the set parameters that men determined. Getting beyond the yellow wallpaper, women defied the corrupted power that men wielded over women, escaped their confinement, and created for themselves a new ideological role, one that included entry into the public sphere
