地震引起邻近断层的静应力变化可能推迟、加速、甚至触发以后的地震(Das and Scholz, 1981; Stein and Lisowski, 1983; Hudnut et al., 1989; Reasenberg et al., 1992; Du and Aydin, 1993; Harris et al., 1992; Joumé et al., ...地震引起邻近断层的静应力变化可能推迟、加速、甚至触发以后的地震(Das and Scholz, 1981; Stein and Lisowski, 1983; Hudnut et al., 1989; Reasenberg et al., 1992; Du and Aydin, 1993; Harris et al., 1992; Joumé et al., 1992; Stein et al., 1992; Simpson et al., 1994; Harris and Simpson, 1993)。这种作用的持续时间长度对地震灾害估计中应力分析的可能作用具有很大影响,但现在还不知道。这里我们采用弹性半空间模型(Okada,1992)来估计过去26a来南加州破坏性地震(M≥5)所产生的静应力变化,并且观察这些变化对以后的地震活动的影响。我们发现在M≥5地震之后的1.5a内,任何一个后来附近的M≥5地震几乎总是使受第一次地震加载而趋于破坏的断层破裂。在这个时期以后,破坏性地震使加载和卸载的断层破裂的可能性几乎是相同的。我们的结果显示,在南加州破坏性地震之后的短时期内,简单的库伦应力破坏模型可以用来识别地震危险性增大的地区。展开更多
Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile ...Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile display that operates via localized heating of a small air volume,enabling lowvoltage operation with standard batteries.Its fully portable design integrates control electronics into a wearable bracelet with Bluetooth activation,enhancing practicality.Mechanical tests demonstrated the device’s ability to generate forces exceeding 30 mN and displacements of tens of microns using pulsed signals with modulable durations and frequencies.User tests with voluntary participants confirmed its effectiveness as a tactile display,achieving 83%accuracy in recognizing Braille patterns.By addressing key limitations of traditional systems,this approach offers a promising solution for compact,low-power wearable tactile interfaces.展开更多
文摘地震引起邻近断层的静应力变化可能推迟、加速、甚至触发以后的地震(Das and Scholz, 1981; Stein and Lisowski, 1983; Hudnut et al., 1989; Reasenberg et al., 1992; Du and Aydin, 1993; Harris et al., 1992; Joumé et al., 1992; Stein et al., 1992; Simpson et al., 1994; Harris and Simpson, 1993)。这种作用的持续时间长度对地震灾害估计中应力分析的可能作用具有很大影响,但现在还不知道。这里我们采用弹性半空间模型(Okada,1992)来估计过去26a来南加州破坏性地震(M≥5)所产生的静应力变化,并且观察这些变化对以后的地震活动的影响。我们发现在M≥5地震之后的1.5a内,任何一个后来附近的M≥5地震几乎总是使受第一次地震加载而趋于破坏的断层破裂。在这个时期以后,破坏性地震使加载和卸载的断层破裂的可能性几乎是相同的。我们的结果显示,在南加州破坏性地震之后的短时期内,简单的库伦应力破坏模型可以用来识别地震危险性增大的地区。
文摘Tactile displays often face challenges like high power consumption,bulky control systems,and limited portability,hindering their application in wearable technologies.This work presents a novel thermopneumatic tactile display that operates via localized heating of a small air volume,enabling lowvoltage operation with standard batteries.Its fully portable design integrates control electronics into a wearable bracelet with Bluetooth activation,enhancing practicality.Mechanical tests demonstrated the device’s ability to generate forces exceeding 30 mN and displacements of tens of microns using pulsed signals with modulable durations and frequencies.User tests with voluntary participants confirmed its effectiveness as a tactile display,achieving 83%accuracy in recognizing Braille patterns.By addressing key limitations of traditional systems,this approach offers a promising solution for compact,low-power wearable tactile interfaces.
