This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories base...This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories based on the standard of IEC 60884.展开更多
The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key managemen...The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key management scheme is responsible for secure distributing group keys among valid nodes of the group. Based on the key-insulated encryption (KIE), we propose a group key management scheme (KIE-GKMS), which integrates the pair-wise key pre-distribution for WSN. The KIE-GKMS scheme updates group keys dynamically when adding or removing nodes. Moreover, the security analysis proves that the KIE-GKMS scheme not only obtains the semantic security, but also provides the forward and backward security. Finally, the theoretical analysis shows that the KIE-GKMS scheme has constant performance on both communication and storage costs in sensor nodes.展开更多
The application of the homemade 1K101 amorphous core in induction module is reported in this paper.The properties of magnetic,insulation and stability are studied with the cores.A pulse with pulse width of 120ns(FWFM)...The application of the homemade 1K101 amorphous core in induction module is reported in this paper.The properties of magnetic,insulation and stability are studied with the cores.A pulse with pulse width of 120ns(FWFM), flattop of 72ns(±1%)and rise time of 17ns can be obtained with single-pulse induction module.Triple-pulse with the rise time of 35us,flat-top of 60ns(±1%)and pulse width of 120us(FWFM)was obtained when tested with a formal linear induction module at MHz repetition burst mode.The effective average flux swing of the amorphous core is about 1.41T.The cores work well with triple-pulse of 282kV.The properties of the cores are stable and suitable for induction module.展开更多
In this paper,a brief review of the history of topological insulators is given.After that,electronic transport experiments in topological insulator-superconductor hybrid structures,including experimental methods,physi...In this paper,a brief review of the history of topological insulators is given.After that,electronic transport experiments in topological insulator-superconductor hybrid structures,including experimental methods,physical properties and seemingly contradictory observations are discussed.Additionally,some new topological insulator hybrid structures are proposed.展开更多
文摘This paper covers the safely requirements and inspection methods for insulating components used in electrical accessories by an analyzing the properties of the insulating components used in electrical accessories based on the standard of IEC 60884.
基金Project(61100201) supported by National Natural Science Foundation of ChinaProject(12ZZ019) supported by Technology Innovation Research Program,Shang Municipal Education Commission,China+1 种基金Project(LYM11053) supported by the Foundation for Distinguished Young Talents in Higher Education of Guangdong Province,ChinaProject(NCET-12-0358) supported by New Century Excellent Talentsin University,Ministry of Education,China
文摘The key exposure problem is a practical threat for many security applications. In wireless sensor networks (WSNs), keys could be compromised easily due to its limited hardware protections. A secure group key management scheme is responsible for secure distributing group keys among valid nodes of the group. Based on the key-insulated encryption (KIE), we propose a group key management scheme (KIE-GKMS), which integrates the pair-wise key pre-distribution for WSN. The KIE-GKMS scheme updates group keys dynamically when adding or removing nodes. Moreover, the security analysis proves that the KIE-GKMS scheme not only obtains the semantic security, but also provides the forward and backward security. Finally, the theoretical analysis shows that the KIE-GKMS scheme has constant performance on both communication and storage costs in sensor nodes.
文摘The application of the homemade 1K101 amorphous core in induction module is reported in this paper.The properties of magnetic,insulation and stability are studied with the cores.A pulse with pulse width of 120ns(FWFM), flattop of 72ns(±1%)and rise time of 17ns can be obtained with single-pulse induction module.Triple-pulse with the rise time of 35us,flat-top of 60ns(±1%)and pulse width of 120us(FWFM)was obtained when tested with a formal linear induction module at MHz repetition burst mode.The effective average flux swing of the amorphous core is about 1.41T.The cores work well with triple-pulse of 282kV.The properties of the cores are stable and suitable for induction module.
基金supported by the National Basic Research Program of China(Grant No.2012CB921300)the National Natural Science Foundation of China(Grant No.11174007)the Penn State MRSEC(Grant No. DMR-0820404)
文摘In this paper,a brief review of the history of topological insulators is given.After that,electronic transport experiments in topological insulator-superconductor hybrid structures,including experimental methods,physical properties and seemingly contradictory observations are discussed.Additionally,some new topological insulator hybrid structures are proposed.
