WLAN(Wireless Local Area Network,无线局域网)是指无线通信技术将计算机设备互联起来,构成可以互相通信和实现资源共享的网络体系,无线局域网本质特点是不再使用通信电缆将计算机与网络连接起来,而是通过无线的方式连接,从而使网络的...WLAN(Wireless Local Area Network,无线局域网)是指无线通信技术将计算机设备互联起来,构成可以互相通信和实现资源共享的网络体系,无线局域网本质特点是不再使用通信电缆将计算机与网络连接起来,而是通过无线的方式连接,从而使网络的构建和终端的移动更加灵活。为此,基于DCN(神州数码)无线网络设备组网,对Fit AP手工注册模式下发现AC和多SSID情况下数据加密认证进行了相关的探究。展开更多
The accuracy and repeatability of computer aided cervical vertebra landmarking (CACVL) were investigated in cephalogram.120 adolescents (60 boys,60 girls) aged from 9.1 to 17.2 years old were randomly selected.Twenty-...The accuracy and repeatability of computer aided cervical vertebra landmarking (CACVL) were investigated in cephalogram.120 adolescents (60 boys,60 girls) aged from 9.1 to 17.2 years old were randomly selected.Twenty-seven landmarks from the second to fifth cervical vertebrae on the lat-eral cephalogram were identified.In this study,the system of CACVL was developed and used to iden-tify and calculate the landmarks by fast marching method and parabolic curve fitting.The accuracy and repeatability in CACVL group were compared with those in two manual landmarking groups [orthodon-tic experts (OE) group and orthodontic novices (ON) group].The results showed that,as for the accu-racy,there was no significant difference between CACVL group and OE group no matter in x-axis or y-axis (P>0.05),but there was significant difference between CACVL group and ON group,as well as OE group and ON group in both axes (P<0.05).As for the repeatability,CACVL group was more reli-able than OE group and ON group in both axes.It is concluded that CACVL has the same or higher ac-curacy,better repeatability and less workload than manual landmarking methods.It’s reliable for cervi-cal parameters identification on the lateral cephalogram and cervical vertebral maturation prediction in orthodontic practice and research.展开更多
文摘WLAN(Wireless Local Area Network,无线局域网)是指无线通信技术将计算机设备互联起来,构成可以互相通信和实现资源共享的网络体系,无线局域网本质特点是不再使用通信电缆将计算机与网络连接起来,而是通过无线的方式连接,从而使网络的构建和终端的移动更加灵活。为此,基于DCN(神州数码)无线网络设备组网,对Fit AP手工注册模式下发现AC和多SSID情况下数据加密认证进行了相关的探究。
基金supported by grants from National Natural Sciences Foundation of China (No. 30801314)China Hubei Provincial Science and Technology Department (No.2008CBD088)
文摘The accuracy and repeatability of computer aided cervical vertebra landmarking (CACVL) were investigated in cephalogram.120 adolescents (60 boys,60 girls) aged from 9.1 to 17.2 years old were randomly selected.Twenty-seven landmarks from the second to fifth cervical vertebrae on the lat-eral cephalogram were identified.In this study,the system of CACVL was developed and used to iden-tify and calculate the landmarks by fast marching method and parabolic curve fitting.The accuracy and repeatability in CACVL group were compared with those in two manual landmarking groups [orthodon-tic experts (OE) group and orthodontic novices (ON) group].The results showed that,as for the accu-racy,there was no significant difference between CACVL group and OE group no matter in x-axis or y-axis (P>0.05),but there was significant difference between CACVL group and ON group,as well as OE group and ON group in both axes (P<0.05).As for the repeatability,CACVL group was more reli-able than OE group and ON group in both axes.It is concluded that CACVL has the same or higher ac-curacy,better repeatability and less workload than manual landmarking methods.It’s reliable for cervi-cal parameters identification on the lateral cephalogram and cervical vertebral maturation prediction in orthodontic practice and research.
