负反馈

The core circuit adopting differential negative resistance structure with resistor feedback achieves good phase noise performance.The 2 bit switch capacitor array provides extra tuning range.The output buffer of common source structure is of decent reverse isolation.

电路核心采用带电阻反馈的差分负阻结构，因此具有良好的相位噪声性能；2bit的开关电容阵列进一步提高了电路的调谐范围；共源级输出缓冲提供了较好的反向隔离度。

In DMMCS, there is an alternative distribution of inertial instability column and inertial stability column, at the west and south, there lie negative CVV columns, while negative CVV column is beneficial to deep moist convection.(4) The strong slantwise convection induced by inertial instability, baroclinic instability and conditional symmetry instability will enhance the upper level southerly component. Because of the appearance of the compensated downdraft at the low level of the south side of DMMCS, the low level southerly is intensified, the enhancement of upper- and low-level cores are in favor of the development of DMMCS. And that will do favor for the reinforcement and maintenance of inertial instability, baroclinic instability and conditional symmetry instability, it is a positive feedback process.

深湿对流系统中高层西侧为负MPV2 柱，东侧为正MPV2 柱；(3)深湿对流系统中惯性不稳定柱与惯性稳定柱相间分布，西侧为负CVV 柱，东侧为正CVV 柱，负CVV 柱对深湿对流起激发作用；（4）惯性不稳定、湿倾斜不稳定和条件不稳定产生强的倾斜式对流，而强的倾斜式上升运动加强了深对流系统北侧高层的南风分量，因深对流系统南侧低层出现补偿性下沉气流，因而低层南风加强，高低空急流中心的加强会进一步加强对流的发展，使得惯性不稳定、湿倾斜不稳定和条件不稳定增强和维持，这是一个正反馈过程。

In order to investigate the existence conditions of the robust optimal state feedback of uncertain system, we have to study the problem of GARE, that is the solution existence of the following equation PA+A'P+Q-PMP=0, Q=Q', M=M' In chapter 2, using some preliminary results and properties of the Riccati differential equation, we have established the sufficient conditions for the GARE problem.

在讨论不确定性系统LQL方法的状态反馈解的存在性条件时，引出了第二章讨论一般代数Riccati方程解的存在性问题，对一般Riccati方程 PA+A'P+Q-PMP=0，Q=Q'，M=M'第二章中先列举讨论了Q、M为正、负定各种情况下的实对称解的存在条件，然后着重研究了M、Q不定的情形。

As gas pools, it turns into stars, whose outflows and explosions push material back out into intergalactic space—a process of negative feedback.

当气体集中形成恒星，所产生的喷流与爆炸会将物质向外推回星系际空间，这是一种负向的反馈机制。

When the amplifier output is in either the positive or negative saturated state, the positive feedback network provides a voltage at the non-inverting input which is determined by the attenuation of the feedback loop and the saturation voltage of the amplifier.

不论放大器输出是正是负，只要OP达到输出饱和状态，OP正反馈路径就会在OP同相输入端加上一个电压，该电压的大小由OP正反馈路径的衰减和OP输出饱和时的电压共同决定。

Feedback in opposite phase with the input.

在起减少作用的输入下的负向相变反馈。

People use different self-handicapping strategy in different situations, in noncontingent feedback situation people are easier to self-handicap than in contingent feedback situation, and in self appraisal condition people are easier to self-handicap than in social appraisal condition

实验情境的设置对个体的自我设限倾向产生了不同的影响，非依随性实验情境下个体自我设限倾向显著的高于依随性实验情境，正性反馈条件下个体自我设限的倾向显著的高于负性反馈条件，自我评价情境中个体自我设限倾向显著高于社会评价情境

In allusion to the above-mentioned problems, considering the self-adaptive regulative ability of the visual system to natural perceptive information and the feedback between visual cortexes, a bidirectional NNSC model is proposed, which is based on the robust principal component analysis and the priors of receptive fields of simple cells in V1. And using the (Polak-Ribiere-Polyak) PRP conjugate gradient descent algorithm, the minimum optimization problem of the objective function can be realized.

针对上述问题，考虑视觉系统对外界感知信息的自适应调整机制和视皮层之间的反馈连接，本文提出了一种基于稳健 PCA 和 V1区简单细胞感受野先验知识的反馈非负稀疏编码模型，并且使用 Polak-Ribiere-Polyak共轭梯度下降优化算法实现了目标函数的最小化问题。

Also, cinacalcet, a new medication that stimulates the calcium sensing receptor in the parathyroid gland and causes negative feedback on PTH production and release, can be used to treat secondary hyperparathyroidism.

另外4，这些新的维生素D类似物的事业少血清钙，磷浓度升高。5此外，cinacalcet，一个新的刺激的药物检测中的钙甲状旁腺受体，造成对生产和释放甲状旁腺负反馈，可用于治疗继发甲状旁腺功能亢进。

What is the effect of learners' perception about NF on EFL development?

在基于任务的互动过程中，学习者对负反馈的感知对英语语言发展起什么作用？

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。