This study investigated the neural basis of social adjustment using multimodal brain imaging and social-adjustment measurements to analyze functional and structural brain features during social adjustment in college s...This study investigated the neural basis of social adjustment using multimodal brain imaging and social-adjustment measurements to analyze functional and structural brain features during social adjustment in college students. The results showed that, regarding brain function, some dimensions of social adjustment were associated with the insula, and some regions of the frontal and occipital lobes. Self-adjustment and satisfaction required activation of the middle frontal gyrus, while career adjustment and academic adjustment required inhibition of the inferior frontal gyrus and lingual gyrus, respectively. Decreased metabolic activity of the lingual gyrus was beneficial for obtaining satisfaction. Regarding brain structure, the total score and some dimensions of social adaptation were associated with the gray matter of portions of the temporal and parietal lobes. The superior temporal gyrus was associated with the total social adjustment and satisfaction score, the middle temporal gyrus with campus-life adjustment and satisfaction, and the post central gyrus and the inferior parietal lobule with emotional adjustment. The changes in the gray matter volume of these brain regions to a certain extent reflected socially adaptive behaviors. The results suggest that social adaptability is associated with various brain regions dispersed among both hemispheres of the brain, and requires synergistic inter-actions between multiple brain regions and both brain hemispheres.展开更多
提出了一种基于磁力发生器的控制力矩陀螺(Control Moment Gyroscope,CMG)动载荷主动补偿方法来改善轴系工况。首先介绍磁力发生器的结构与工作原理,给出磁力发生器的设计参数;然后对CMG系统进行动力学建模;接下来通过等效磁路法与有限...提出了一种基于磁力发生器的控制力矩陀螺(Control Moment Gyroscope,CMG)动载荷主动补偿方法来改善轴系工况。首先介绍磁力发生器的结构与工作原理,给出磁力发生器的设计参数;然后对CMG系统进行动力学建模;接下来通过等效磁路法与有限元法对装置的输出特性进行计算,通过实验测试磁力发生器的静态和动态输出特性,与计算结果进行对比,并对模型参数进行拟合;最后通过仿真研究磁力发生器的动载荷主动补偿效果。展开更多
聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传...聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传输的关键部件,磁绝缘传输线中产生的电流损失会对负载电流波形产生影响并使能量传输效率降低。为此,针对聚龙一号装置,通过全电路计算,在长短两种脉冲输出模式下,研究了磁绝缘传输线的电流损失特性。研究表明：对于电流前沿较快的Z-pinch实验类型,磁绝缘形成过程中外磁绝缘线的损失电流总和约为940 k A,磁绝缘形成后在柱孔汇流区的损失为330~743 k A;而对于前沿较慢的准等熵压缩实验类型,对应的损失分别为223 k A和77~174 k A。展开更多
文摘This study investigated the neural basis of social adjustment using multimodal brain imaging and social-adjustment measurements to analyze functional and structural brain features during social adjustment in college students. The results showed that, regarding brain function, some dimensions of social adjustment were associated with the insula, and some regions of the frontal and occipital lobes. Self-adjustment and satisfaction required activation of the middle frontal gyrus, while career adjustment and academic adjustment required inhibition of the inferior frontal gyrus and lingual gyrus, respectively. Decreased metabolic activity of the lingual gyrus was beneficial for obtaining satisfaction. Regarding brain structure, the total score and some dimensions of social adaptation were associated with the gray matter of portions of the temporal and parietal lobes. The superior temporal gyrus was associated with the total social adjustment and satisfaction score, the middle temporal gyrus with campus-life adjustment and satisfaction, and the post central gyrus and the inferior parietal lobule with emotional adjustment. The changes in the gray matter volume of these brain regions to a certain extent reflected socially adaptive behaviors. The results suggest that social adaptability is associated with various brain regions dispersed among both hemispheres of the brain, and requires synergistic inter-actions between multiple brain regions and both brain hemispheres.
文摘提出了一种基于磁力发生器的控制力矩陀螺(Control Moment Gyroscope,CMG)动载荷主动补偿方法来改善轴系工况。首先介绍磁力发生器的结构与工作原理,给出磁力发生器的设计参数;然后对CMG系统进行动力学建模;接下来通过等效磁路法与有限元法对装置的输出特性进行计算,通过实验测试磁力发生器的静态和动态输出特性,与计算结果进行对比,并对模型参数进行拟合;最后通过仿真研究磁力发生器的动载荷主动补偿效果。
文摘聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传输的关键部件,磁绝缘传输线中产生的电流损失会对负载电流波形产生影响并使能量传输效率降低。为此,针对聚龙一号装置,通过全电路计算,在长短两种脉冲输出模式下,研究了磁绝缘传输线的电流损失特性。研究表明：对于电流前沿较快的Z-pinch实验类型,磁绝缘形成过程中外磁绝缘线的损失电流总和约为940 k A,磁绝缘形成后在柱孔汇流区的损失为330~743 k A;而对于前沿较慢的准等熵压缩实验类型,对应的损失分别为223 k A和77~174 k A。
