Through modifying the object function of the new algorithm, a proper tradeoff can be realized between LTF and ALTF for more satisfying performance parameters of LDPC codes.
该算法不仅可以进一步提高优化性能，还可以通过修改目标函数在下三角和准下三角之间合理均衡以便确定LDPC编码优化的最佳性能参数。
The function of nano-inorganic particles modifying plastic is discus sed in the paper. The preparations of nano-plastics and the progress in improving the plastics performance are also reviewed.
讨论了纳米无机粒子在塑料改性中的功能及作用，综述了纳米材料改性塑料的制备方法及在塑料性能改善方面的研究进展。
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