| 1. | Transformations among several chain codes in square lattice
矩形点阵上链码的转换算法 |
| 2. | The renormalization group calculation for square lattice of double layer
模型的重整化群计算 |
| 3. | Transformations among several chain codes of 8 - site neighborhood binary digital images in square lattice
矩形点阵上八近邻图像的链码转换算法 |
| 4. | Numerical study on photonic properties in two - dimensional complex photonic crystals of square lattice
二维正方形复式晶胞光子晶体的光子特性研究 |
| 5. | Two - dimensional acrylic / air sonic band structure with square lattice is considered in the numerical example
本文以平面波展开法分析压克力?空气声子晶体声波全频沟之现象。 |
| 6. | Due to the difference of coordination number , the honeycomb lattice and the square lattice display different transition properties
对于不同的二维点阵，由于配位数的不同，也导致了相变特性的一些区别。 |
| 7. | 3 . a new tsaw model are proposed , we use the real space renormalization group approach to treat the model on square lattice . the threshold kc and the fractal dimension d are obtained respectively
我们提出了一种新的自回避行走模型(飞蚁模型) ，用重整化群方法计算了该模型的临界值和分形维数分别为kc = 0 . 545069 、 d = 0 . 814909 。 |
| 8. | A revised plane - wave expansion method for quickly calculating the band structure of a photonic crystal of pixel type is used to design a photonic crystal of square lattice with a large absolute band gap at high frequencies
本文用修正后的平面波方法，数值分析了由常见的半导体材料gaas ( = 11 . 4 )和空气为介质组成的二维光子晶体的能带结构，发现了一些有意义的结果。 |
| 9. | In the present thesis , we have considered a 2d photonic crystal of square lattice formed by two materials of dielectric constants . we consider the structure to be formed by a large number of small rectangle or square pixels of uniform size
本文提出不管哪种结构均可看成是由很多个同样大小的小矩形或正方介质像素组成的，对这种二维像素型光子晶体结构，对传统平面波展开法可经修正使之收敛速度大大提高。 |
| 10. | Using a general approach for designing two - dimensional photonic crystals of square lattice , we have found many structures whose absolute band gap hi the low or high frequency range is much larger than what has been reported in the previous literature . to speed up the computation , a fast plane - wave expansion method is introduced for calculating the band structures for such special photonic crystals
最后以gaas和te材料为基础，通过像素分析法，从理论上提出了多种在低频、高频区域有大绝对禁带的二维光子晶体，并且其禁带宽度显著优于所有已有文献报道的光子晶体结构。 |
