机构

• 古脊椎动物与古人类研... [2]
• 半导体研究所 [1]
• 地球环境研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• 期刊论文 [4]

发表日期

• 2022 [1]
• 2021 [1]
• 2020 [1]
• 2007 [1]

学科主题

• 光电子学 [1]

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A structural reassessment of the Late Pleistocene femur from Maludong, southwestern China 期刊论文  OAI收割 AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY, 2022, 页码: 12 作者:  Wei, Pianpian;  Ma, Shiwu;  Carlson, Kristian J.;  Ji, Xueping;  Zhang, Quanchao   |  收藏  |  浏览/下载：37/0  |  提交时间：2022/09/16 cross-sectional geometry  East Asia  femoral diaphysis  modern humans   Late Pleistocene partial femora from Maomaodong, southwestern China 期刊论文  OAI收割 JOURNAL OF HUMAN EVOLUTION, 2021, 卷号: 155, 页码: 5 作者:  Wei, Pianpian;  Weng, Zekun;  Carlson, Kristian J.;  Cao, Bo;  Jin, Li   |  收藏  |  浏览/下载：20/0  |  提交时间：2021/09/17 Femoral diaphysis  Robusticity  Cross-sectional geometry  Modern humans  East Asia   Middle Pleistocene human femoral diaphyses from Hualongdong, Anhui Province, China 期刊论文  OAI收割 AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY, 2020, 页码: 14 作者:  Xing, Song;  Wu, Xiu-Jie;  Liu, Wu;  Pei, Shu-Wen;  Cai, Yan-Jun   |  收藏  |  浏览/下载：24/0  |  提交时间：2020/12/23 cross-sectional geometry  diaphysis  femur  geometric Morphometrics  human paleontology   Geometry parameter optimization of large cross-sectional S-shaped bent rib waveguides for silicon based optical switches 期刊论文  OAI收割 chinese physics letters, 2007, 卷号: 24, 期号: 3, 页码: 744-746 Li ZY (Li Zhi-Yong); Liu JW (Liu Jing-Wei); Yu JZ (Yu Jin-Zhong) 收藏  |  浏览/下载：109/0  |  提交时间：2010/03/29 摘要: By using a genetic algorithm  geometry parameters of large cross-sectional S-bend rib waveguides are optimized aiming at the least total loss when the propagation loss is considered. Optimized results are presented as an example of S-bend rib waveguides based on silicon-on-insulator (SOI) 4 x 4 optical switches. The value of 2dB/cm is given to the propagation loss according to the experimental results. The simulation results indicate that the total loss drops from 1.0002dB down to 0.4375dB without considering a lateral offset. If the offset is adopted  the total loss reduces from 0.5463dB to 0.2365dB. In addition  the effect of the rib height ratio on the loss is analysed  and the optimal ratio is obtained to be 0.55.