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The PSF values can be estimated by alternating iterative minimizing the objective function, and the object images can be restored by the constrained least-squares filtering method.

将小波变换与分解的多分辨特性和时频局部化特性应用在湍流退化图像的盲目复原中，降低了算法的计算复杂性并提高了其抗噪能力。

Based upon all above-mentioned, a mathematical representation for multi-material structures is proposed by means of vector level sets, and the general structure topology optimization can be expressed by a constrained functional minimization problem of a set of level set functions.

同时，还提出了在有效约束切空间上构造的非线性映射技术，以改进向量水平集的演化方向，可提高计算效率2到3倍。

Using level-set method, mathematical representation for contimuum structures is proposed by means of the vector of level-set, and the general structure topology optimization can be expressed by a constrained functional minimization problem of a set of level set functions.

其次利用水平集方法将一般拓扑优化问题描述为一组水平集函数的约束泛函极小化问题，应用敏度分析，给出了此泛函极小化数值迭代求解公式，即水平集演化方程。

Under the condition of steady laminar lubrication, the pressure and the load capacity of non-Newtonian fluid is increased by the effect of the first normal stress difference, but the effect is constrained by the normal velocity and can be omitted in the calculation.

在持久稳定的薄层润滑作用之下，常规的压力和负载受到正常速度的限制，因此在计算中可以直接省略。

Article 5 Laws of nature and reason proscribe all acts harmful to society; everything which is not prohibited by these wise and divine laws cannot be prevented, and no one can be constrained to do what they do not command.

第五条 自然法律和理性宣告一切对社会有害的行为；任何没有被这些明智的，天赐的法律禁止的都不受禁阻，而且任何人都不能被强迫去做法律没有规定事。

The concentration of Cosmogenic nuclides is not only constrained by production rates and exposure time, and also closely related to surface erosion. Furthermore, the concentration is affected by geomagnetic intensity, shielding, chemical weathering, and sample geometry as well. These factors affecting Cosmogenic nuclide concentration should be calibrated when surface exposure age is calculated.

地表物质中宇宙成因核素浓度除了受到核素生成速率和地表物质的暴露时间制约外，还与地表侵蚀速率密切相关，此外，地磁场强度、遮蔽、化学风化及样品的几何位置等也会对核素浓度产生一定影响，在求算样品的地表暴露年代时，应对这些因素进行相应的校正。

Whoever he appoints, Mr Obama will be constrained by the failing economy.

无论奥巴马怎样任命，他都将被不断下滑的经济所左右。

Real change can not be constrained by the rules, hunches, or imagined.

真正的变化是无法被规则制约、预感或想象之中。

And the results showed that the model constrained iteration inversion methods can get more veliable water contents and distribution from the indued volotage of surface NMR, and these results can be inverted by model constrained inversion from an initial homogeneous water content model.

对无噪音数据，平坦模型和光滑模型约束对反演的含水量分布影响不大；但当数据存在一定的噪音时，平坦模型约束将比光滑模型约束获得更为精确的含水层参数。

Belong to the larger machine, the price from more than 10 million to hundreds of thousands, the difference between the two machines is provided by the pressure of the adequacy of standard nine millibars of pressure is atmospheric pressure, although small home appliances machine is constantly The improvement, however, constrained by the cost, so the pressure it is still to be questioned.

属於较大型的机台，价格从十几万到几十万，这两种的差别就在於机器所提供的压力是否足够，标准的压力是九毫巴的大气压力，小型的家电机器虽然也是不断的改进中，但受制於成本，因此它所产生的压力仍是有待质疑的。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。