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One hundred and eleven students took part in the experiment. The results showed that multi-stage feedback of other members was the most important cue of dynamic decision-making and it was the base of cooperation. The environment uncertainty and value orientation of members will also interact with feedback and have effect on cooperation.

研究发现，在动态博弈过程中，群体其他成员行为的多个阶段回馈将成为决策者合作机制形成的主要基础，与决策者价值等内部因素和环境不确定性等外部因素，共同影响合作行为的演变。

Simulation results show that the performance of the open-loop control system is poor when the model parameters change. The second system is designed via feedback linearization method. Since the path signal is introduced as feedback signal, the designed closed-loop control system improves the system robustness to the parameter perturbation. Simulation results verify that the closed-loop control system shows better performance than the time optimal control system.

前者侧重于时间最短的控制性能，但由于是开环控制，当出现参数摄动时，系统的性能会受到较大影响；后者由于引入了飞艇轨迹的反馈信号，因而相对提高了系统对参数摄动的鲁棒性，计算量较小，并且仿真结果证实了这种闭环系统设计方案可以抑制参数摄动带来的影响，与时间最优开环控制系统相比，显著提高了控制精度、改善了控制效果。

We obtained the sufficient conditions to solve the H〓-state feedback and output feedback control.

得到了系统可实现状态反馈及输出反馈H〓-控制的充分条件，给出了控制器的显式表达形式。

This article proposes essential color of color feature and gradation paragenesis matrix of the texture characteristic,as well as the correlation feedback technology carried on together the retrieval.This article uses the correlation feedback technology to adjust the feature coefficient of color and texture and weight value of the block of this two feature.

提出了将颜色特征中的分块主色法，纹理特征中的分块灰度共生矩阵以及相关反馈技术相结合来共同进行检索，并采用相关反馈技术通过更新权值的方法来调整图像颜色、纹理特征系数以及对应于这两种特征的图像各分块的权值。

Based on a general parametric eigenstructure assignment result proposed for descriptor linear systems via proportional plus partial derivative state feedback and a result for generalized eigenvalue sensitivity problem of matrix pairs, parametric representation of the closed-loop eigenvalue sensitivities to the perturbed elements in the open-loop system matrices is obtained. An effective algorithm for eigenvalue assignment with minimum sensitivity in descriptor linear systems via proportional plus partial derivative state feedback is then proposed.

摘要基于广义线性系统比例与部分状态导数反馈参数化特征结构配置结果和矩阵对广义特征值灵敏度结果，得到了关于开环系统矩阵中摄动元素的闭环特征值灵敏度的参数表达式，并在此基础上提出了广义线性系统比例与部分状态导数反馈最小灵敏度特征值配置的有效算法。

In part two, the optical spatiotemporal pattern in ring optic cavity is investigated. Using delay feedback with spatial perturbation method, the system shows roll, square, hexagon, homocentric circle,"honeycomb"and"snowflower" pattern with different spatial perturbation functions. Different patterns can be coexist and compete each other with the same perturbation function, which is the new character of this optical system with delay feedback.

第二部分，利用延时反馈的空间微扰方法研究了环形腔中二能级介质的光学时空斑图的控制，在不同的微扰函数作用下，出现了滚筒状、四方形、六角形、蜂窝状、同心圆以及"雪花"状等不同的斑图，并且在相同的微扰函数下出现了不同斑图之间的竞争，这种竞争是我们发现的这一具有空间微扰的延时反馈非线性光学系统光学斑图的新特征。

The results show that the flow divider pintle supporting system has a closed loop adjusting effect with pressure feedback. The flow divider pintle returns to the balancing state with a zero eccentricity under the pressure feedback and has no overshoot.

结果表明配流轴支承系统具有压力反馈的闭环调节作用，配流轴在压力反馈作用下恢复到偏心率为0的平衡状态，且没有超调量。

Your feedback is very important for us and positive feedback is highly appreciated.

您的反馈意见是非常重要和积极的，是对我们高度赞赏。

External regulator of positive feedback is variation of precipitation amount and frequency of extreme precipitation. It is shown that desertification is predetermined by the decreased precipitation as well as by the decrease in frequency of precipitation. In the second half of 20th century importance of man-induced degradation of dry lands as additional regulator of positive feedback has been increased.

正反馈的外部调节因子是降水量的变化和极端降水事件的出现频率，降水量减少以及降水频率的降低直接影响沙漠化的程度。20世纪下半叶，人类因素导致的干旱土地退化作为另外的正反馈调节因子，其重要性正在增加。

The primitive polynomial of 3-12 pseudo-random sequence generator is obtained after the deductions. The better nonlinear feedback function of all states pseudo-random sequence generator can be picked out according to the characteristic of pseudo- random sequence signal, then using all states of shifting counter through modifying the linear shift register feedback network to realize the all states pseudo-random sequence signal.

经过推导可以得到3-12 bit伪随机序列发生器的本原多项式，再根据伪随机序列信号的特性选择出较好的全状态伪随机序列发生器的非线性反馈函数，即通过修改线性移位寄存器的反馈网络将移位型计数器的全部状态加以利用，实现全状态伪随机序列信号。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。