The intelligent fuzing is a kind of perfect way to optimize detonation location.The fuze can autonomously configure the warhead detonation mode to optimize the desired effects against the target.For the air target,the...The intelligent fuzing is a kind of perfect way to optimize detonation location.The fuze can autonomously configure the warhead detonation mode to optimize the desired effects against the target.For the air target,the fuze can sense the impact in the impact mode then detonate the warhead on impact,otherwise,it will operate in the proximity mode and detonate at a closest approach to the target.The anti-jamming ability is also added on fuze＇s full digital signal processing platform.The method for burst point＇s controlling is analyzed and the digital intelligent fuze system based on system on programmable chip（SOPC） is designed.展开更多
目的:分析耳科正常青年人气导和骨导短纯音诱发的听性脑干反应(ABR)的特性,比较气骨导短纯音ABR反应阈与纯音听阈的关系,探讨气骨导短纯音ABR反应阈对听阈评估的价值。方法:30例耳科正常青年人(男/女=14/16)分别进行纯音听阈测试、气导...目的:分析耳科正常青年人气导和骨导短纯音诱发的听性脑干反应(ABR)的特性,比较气骨导短纯音ABR反应阈与纯音听阈的关系,探讨气骨导短纯音ABR反应阈对听阈评估的价值。方法:30例耳科正常青年人(男/女=14/16)分别进行纯音听阈测试、气导和骨导短声及短纯音ABR测试。结果:1气导0.5、1、2、4 k Hz短纯音诱发ABR反应阈分别较对应频率气导纯音听阈高18.41±4.47、13.18±3.63、8.86±5.10、8.64±5.16 d B,骨导0.5、1、2、4 k Hz短纯音诱发ABR反应阈分别较对应频率骨导纯音听阈高14.31±3.98、10.45±4.54、6.82±4.24、8.18±4.77 d B。2气骨导各频率短纯音ABR反应阈的差值分别为5.55±3.42、3.86±4.86、1.36±5.60、1.59±6.05 d B,0.5、1 k Hz气骨导阈值间的差异有统计学意义(P<0.01),2、4k Hz气骨导阈值间的差异无统计学意义(P>0.05)。3气骨导短纯音ABR V波潜伏期均较短声ABR长,其差异有统计学意义(P<0.01),但两者I^V波间期的差异无统计学意义(P>0.05)。结论:气骨导短纯音ABR反应阈可以预测纯音听阈,气骨导短纯音ABR反应阈的差值有助于鉴别听力损失的类型。展开更多
文摘The intelligent fuzing is a kind of perfect way to optimize detonation location.The fuze can autonomously configure the warhead detonation mode to optimize the desired effects against the target.For the air target,the fuze can sense the impact in the impact mode then detonate the warhead on impact,otherwise,it will operate in the proximity mode and detonate at a closest approach to the target.The anti-jamming ability is also added on fuze＇s full digital signal processing platform.The method for burst point＇s controlling is analyzed and the digital intelligent fuze system based on system on programmable chip（SOPC） is designed.
文摘目的:分析耳科正常青年人气导和骨导短纯音诱发的听性脑干反应(ABR)的特性,比较气骨导短纯音ABR反应阈与纯音听阈的关系,探讨气骨导短纯音ABR反应阈对听阈评估的价值。方法:30例耳科正常青年人(男/女=14/16)分别进行纯音听阈测试、气导和骨导短声及短纯音ABR测试。结果:1气导0.5、1、2、4 k Hz短纯音诱发ABR反应阈分别较对应频率气导纯音听阈高18.41±4.47、13.18±3.63、8.86±5.10、8.64±5.16 d B,骨导0.5、1、2、4 k Hz短纯音诱发ABR反应阈分别较对应频率骨导纯音听阈高14.31±3.98、10.45±4.54、6.82±4.24、8.18±4.77 d B。2气骨导各频率短纯音ABR反应阈的差值分别为5.55±3.42、3.86±4.86、1.36±5.60、1.59±6.05 d B,0.5、1 k Hz气骨导阈值间的差异有统计学意义(P<0.01),2、4k Hz气骨导阈值间的差异无统计学意义(P>0.05)。3气骨导短纯音ABR V波潜伏期均较短声ABR长,其差异有统计学意义(P<0.01),但两者I^V波间期的差异无统计学意义(P>0.05)。结论:气骨导短纯音ABR反应阈可以预测纯音听阈,气骨导短纯音ABR反应阈的差值有助于鉴别听力损失的类型。
