不变

According to Liu Xie , there is unchangeableness in changes of literary forms or there are changes in unchangeableness . Such a structural theory inspires us to combine structuralist explorations of universality with post - structuralist explorations of changeableness , which may be a scientific and effective approach .

刘勰关于文学形式交中有不变或者说不变中有交的"通变"结构理论给人们启示了一条将结构主义对普遍性的探讨与后结构主义对变异性的探讨融为一体的独特的研究之途，不失为一条科学有效的研究路径。

The inconsistencies of dimensional reduction and naive dimensional regularization in dealing withChern-Simons-matter theory are analyzed.The consistent dimensional regularization combiningwith higher covariant derivative regularization is adopted to consider Chern-Simons field theorycoupled to complex scalar and spinor field.All the local parts of one-loop two-point functionsand three-point functions are computed.Slavnov-Taylor identity is combined with these explicitcalculation results to give the one-loop local effective action.The finite gauge invariant quantumcorrection is shown and finite wave function renormalization constant for each field is defined.Thelocal part of one-loop three gauge field vertex is especially evaluated and it is verified that thereexists a renormalization choice compatible with BRST symmetry.

然后计算了所有的两点函数和三点函数单圈修正的定域部分，利用S-T恒等式给出了单圈定域有效作用量，定义了场的重正化常数，发现物质场和规范场都存在有限的规范不变的量子修正，并讨论了这些有限的规范不变的量子修正的物理意义，进而通过考察单圈三规范场顶角，表明存在与BRST对称性相容的重正化选择。5、在背景场方法的框架下，选择高阶协变导数正规化与维数正规化的杂化正规化方案计算了背景场两点函数的两圈量子修正，结果表明，标志紫外发散的极点项恰好抵消；进一步利用背景场方法中明显的规范对称性，证明背景场三点函数的两圈图贡献也是有限的。

By Llibre's algebraic invariant theory, at first on the basis of classification for quadric and quadric homogeneous binary polynomial, the plane linear and cubic homogeneous polynomial differential systems are classified.

利用Llibre的代数不变式理论，首先由二元二次和二元四次多项式的分类结果，对一次和三次齐次多项式微分系统进行代数分类，同时补充了已有结果中出现的漏洞；其次，由称共变张量空间的性质，对缺二次项的三次微分系统在保证轨线走向不变的前提下进行代数分类，使分类后同类系统的示性多项式有相同零点；最后通过讨论一类简单系统的有界性说明了分类的方便方处。

Under the hypothetic climate change scenarios of 20% change in precipitation and –2℃ change in temperature, annual runoff in the four regions will increase 37.8%, 62.3%, 73.2% and 48.2% respectively in order.

根据黄河上中游未来气候的可能变化，假定的气候变化方案为：降水变化为±20%、±10%和不变，同时气温保持不变及变化±1℃、±2℃共25种组合。

Application of inverse filter in energy spectrum measuring;2. Time-varying MIMO channel tracking algorithm based on inverse filter .;3. Based on inverse filter ing technique, a method of rotating invariance matched filtering correlation recognition is proposed in this paper.

提出了用逆滤波器来进行旋转不变匹配滤波相关识别方法；采用级联变形滤波器可以实现透射匹配相关峰强度对透射输入能量的优化，大大改善相关峰的锐度，计算机模拟结果显示，对旋转图像，在平面内按 0°～ 32°旋转，每 4°取一灰度图像的旋转不变匹配滤波相关器，具有较好的相关不变识别性能，特别是目标图像在部分输入情况下也能较好地识

By applying these two tools,we mainly discuss the problems as follows:1 Perturbation identities for the generalized polar decomposition:By applying singular value decomposition, we study the perturbation bounds of the generalized polar decomposition under unitary invariant norms when A is perturbed by addition or multiplication,respectively and give our bounds in identities.2 A class of new unitary invariant metrics: This paper generalized a class of new unitarily invariant metrics and give the upper-bounds and lower-bounds by C-S decomposition.

利用这两个强有力的工具，本文主要讨论了如下问题：1 矩阵广义极分解的扰动等式：利用奇异值分解，本文分别讨论了加法扰动和乘法扰动下矩阵广义极分解在任意酉不变范数下的扰动界，并首次以恒等式的形式给出了酉极因子和半正定因子的扰动界。2 一类新的酉不变度量：本文推广了文[22] 中的结论，定义了一类新的酉不变度量。

We define I-quasi-invex vector function ., I-strictly quasi-invex vector function and KT-I-strictly quasi invex vector function, and derive the above equivalent condition for unconstrained or constrained multiobjective programming.

于是，在本文的第三部分，我们定义了Ⅰ类不变拟凸、Ⅰ类严格不变拟凸、KT-Ⅰ类严格不变拟凸的向量值函数，并且在无约束或约束多目标规划中，获得了每个驻点是有效解的等价条件。

Aeruginosa increased with the increased initial P concentration in the media;② Under the constant N concentration, the phosphorus uptake of M. aeruginosa was correlated positively with the initial P concentration;③ Under the constant P concentration, the accumulation of phosphorus by M. aeruginosa was correlated negatively with the initial N concentration, but the trend was not obvious and the effect of initial N concentration on the uptake P quantity became ruleless when the initial N concentration reached a higher level (21 mg/L).

结果显示，①氮磷比不变时，随着起始磷浓度的增加，铜绿微囊藻对正磷酸盐蓄积量也逐渐增加，成明显正相关；②氮浓度不变时，铜绿微囊藻对正磷酸盐的蓄积效果与磷浓度正相关；③而同一磷浓度下，铜绿微囊藻对正磷酸盐的蓄积效果与氮浓度负相关，但氮浓度超过21 mg/L时，氮浓度对于铜绿微囊藻蓄积磷的效果影响变得不规则。

Mr Marvin Cheung Hang: in enterprise development, only constant brand, the product is not intact, because the constant brand needs to readapt the product to market changes.

张建恒：在企业发展中，只有不变的品牌，没有不变的产品，因为不变的品牌需要不断适应市场变化的产品来支撑。

To conquer limitations of existing techniques for developing loop invariants, professor Xue Jinyun, who is imbursed under two National Nature Science Foundation of China, systematically research the theory and method of loop invariants and advanced the new definition and developing strategies for loop invariants. Based on above, he presented efficiency method of developing algorithmic program, Partition-and-Recur Approach, and its developing environment which bring into important play in formal method.

为了克服已有循环不变式开发技术存在的局限性，薛锦云教授在两个国家自然科学基金课题&若干新的算法程序设计和证明方法研究&和&实用的软件形式化方法及其开发工具的研究&的资助下，对循环不变式的理论和方法进行了系统的研究，提出了关于循环不变式的新定义和新的开发策略，并在此基础上形成了一种实用的算法程序形式化开发方法及其开发环境，在复杂算法程序及软件形式化开发中发挥了重要作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。