整治费多费乱问题的思考

朱镕基总理在九届全国人大一次会议答中外记者问中,就财政税收制度改革问题一针见血地指出:“目前在财政税收制度改革中存在的一个问题是费大于税,很多政府机关在国家规定以外征收各种费用,使老百姓负担不堪,民怨沸腾,对此必须整顿和改革。”费大于税,到了何种程度呢?通过以下几组数据可窥见一斑。1997年国家收费基金超过4000亿,已接近财政收入。据当年10月首都一家报载:北京6家国有企业向政府各部门交费206次,收费项目五花八门;

Electronic and Transport Properties of Carbon Nanotubes with Impurities and Structure Disorder

Electron relaxation time and density of states near the Fermi level were calculated for ＂dirty＂ carbon nanotubes taking into account multiple elastic electrons scattering on impurities and structural inhomogeneities of a short-range order type. A possible explanation of low-temperature behavior of density of states and electrical conductivity depending on defect structure, impurities and chirality is presented.