研究了转子和定子碰摩时振幅的跳跃现象,利用响应相位特征解释了接触诱发‘刚度增加’的机理。当转子与定子之间的间隙足够大时,转子在临界转速达到最大振幅,然后迅速衰减。如果与定子发生接触或碰撞,它们之间的接触将在很宽的速度范围...研究了转子和定子碰摩时振幅的跳跃现象,利用响应相位特征解释了接触诱发‘刚度增加’的机理。当转子与定子之间的间隙足够大时,转子在临界转速达到最大振幅,然后迅速衰减。如果与定子发生接触或碰撞,它们之间的接触将在很宽的速度范围得以维持,即便是转速已经远离临界转速。这一现象也称为‘刚度增加’或‘硬化’(stiffness increase or stiffening)。研究结果表明,形成该现象的机理是由于接触的作用,使得激励与振动响应的相位差保持在小于π/2的范围内。并且振幅跳跃与相位跃迁相伴出现。实验结果也验证了这一结论。展开更多
In order to predict Subjective Well-Being (SWB) or happiness two of the major determinants may be 1) A genetic set point (which reflects personality) and 2) Current intentional activities (behavioral, cognitive, and m...In order to predict Subjective Well-Being (SWB) or happiness two of the major determinants may be 1) A genetic set point (which reflects personality) and 2) Current intentional activities (behavioral, cognitive, and motivational). In this context, personality can be considered as psycho-biological—composed of temperament (i.e., what grabs our attention and how intensely we react) and character (i.e., a reflection of personal goals and values). The present study examined how adolescents’ personality and intentional happiness-increasing strategies, measured at one point in time, are related to SWB measured one year later. Results show that temperament (Harm Avoidance) and character dimensions (Self-directedness) predicted SWB. Moreover, strategies such as active leisure (e.g., engaging in sports) and instrumental goal pursuit (e.g., study) also predicted SWB at the end of the school year. The strategy of Mental Control (i.e., an ambivalent effort to both avoid and contemplate negative thoughts and feelings), which was related to Harm Avoidance and Self-Directedness, mediated the relationship between these two personality dimensions and SWB.展开更多
文摘研究了转子和定子碰摩时振幅的跳跃现象,利用响应相位特征解释了接触诱发‘刚度增加’的机理。当转子与定子之间的间隙足够大时,转子在临界转速达到最大振幅,然后迅速衰减。如果与定子发生接触或碰撞,它们之间的接触将在很宽的速度范围得以维持,即便是转速已经远离临界转速。这一现象也称为‘刚度增加’或‘硬化’(stiffness increase or stiffening)。研究结果表明,形成该现象的机理是由于接触的作用,使得激励与振动响应的相位差保持在小于π/2的范围内。并且振幅跳跃与相位跃迁相伴出现。实验结果也验证了这一结论。
文摘In order to predict Subjective Well-Being (SWB) or happiness two of the major determinants may be 1) A genetic set point (which reflects personality) and 2) Current intentional activities (behavioral, cognitive, and motivational). In this context, personality can be considered as psycho-biological—composed of temperament (i.e., what grabs our attention and how intensely we react) and character (i.e., a reflection of personal goals and values). The present study examined how adolescents’ personality and intentional happiness-increasing strategies, measured at one point in time, are related to SWB measured one year later. Results show that temperament (Harm Avoidance) and character dimensions (Self-directedness) predicted SWB. Moreover, strategies such as active leisure (e.g., engaging in sports) and instrumental goal pursuit (e.g., study) also predicted SWB at the end of the school year. The strategy of Mental Control (i.e., an ambivalent effort to both avoid and contemplate negative thoughts and feelings), which was related to Harm Avoidance and Self-Directedness, mediated the relationship between these two personality dimensions and SWB.
