To increase the channel number in the optic filter, the multiple-phase-shift (MPS) technology is adoped based on the multiple-reflection-spectrum-envelopes-concatenation (MRSEC) model which has a broadband flatness. T...To increase the channel number in the optic filter, the multiple-phase-shift (MPS) technology is adoped based on the multiple-reflection-spectrum-envelopes-concatenation (MRSEC) model which has a broadband flatness. The reflection spectra of the MPS digital concatenated sample gratings are simulated with transfer matrix method, the results show that wave band of the reflection spectrum is widened and the channel number is multiplied. What’s more, the spectrum flatness is improved with the increasing of refr...展开更多
南非是世界五大矿产国之一,也是中国在非洲投资规模最大的国家。南非矿业的增加值约为2305亿兰特,占其G D P的7.3%。矿业已占据中国对南非投资比重的四分之一以上。南非矿业历史悠久,法律制度完善,受殖民主义和种族隔离影响,矿业成为了...南非是世界五大矿产国之一,也是中国在非洲投资规模最大的国家。南非矿业的增加值约为2305亿兰特,占其G D P的7.3%。矿业已占据中国对南非投资比重的四分之一以上。南非矿业历史悠久,法律制度完善,受殖民主义和种族隔离影响,矿业成为了南非黑人经济振兴政策的重要领域。因此,南非矿业本土化的立法与评估体系对矿业所有权、矿山社区发展、当地采购、住房和生活条件、人力资源开发和就业平等六大方面提出了更高的要求。在赴南非投资矿业的进程中,中国企业必须高度关注其矿业本土化立法的规制,积极做好提升本土化评估等级、履行环境保护义务的举措。展开更多
基金supported by the National Natural ScienceFoundation of China(No. 90201011)Sichuan Application basedResearch and Development Project(No.2008JY0064)the Fund of Dr. Development of Chinese Education Ministry(No.20070613058).
文摘To increase the channel number in the optic filter, the multiple-phase-shift (MPS) technology is adoped based on the multiple-reflection-spectrum-envelopes-concatenation (MRSEC) model which has a broadband flatness. The reflection spectra of the MPS digital concatenated sample gratings are simulated with transfer matrix method, the results show that wave band of the reflection spectrum is widened and the channel number is multiplied. What’s more, the spectrum flatness is improved with the increasing of refr...
文摘南非是世界五大矿产国之一,也是中国在非洲投资规模最大的国家。南非矿业的增加值约为2305亿兰特,占其G D P的7.3%。矿业已占据中国对南非投资比重的四分之一以上。南非矿业历史悠久,法律制度完善,受殖民主义和种族隔离影响,矿业成为了南非黑人经济振兴政策的重要领域。因此,南非矿业本土化的立法与评估体系对矿业所有权、矿山社区发展、当地采购、住房和生活条件、人力资源开发和就业平等六大方面提出了更高的要求。在赴南非投资矿业的进程中,中国企业必须高度关注其矿业本土化立法的规制,积极做好提升本土化评估等级、履行环境保护义务的举措。
