重启后显示界面如下： welcome to emergency mode！after logging in ，type “journalctl - xb” to view system logs，“systemctl reboot” to reboot ，“systemctl default” to try again to boot into default mode。 give root password for maintenance （？？ Control-D？？？）： 主要原因：上一次关机前 对电脑的系统配置有更改 重启出现错误，不能进入用户登录模式。 可能原因：若 设置了 开机自动挂载移动硬盘的话，那么必须插上硬盘才能正常启动 建议：以后使用sudo 更改配置文件要谨慎 删除 开机自动挂载移动硬盘的配置 问题参考： http://tieba.baidu.com/p/3392580973 http://www.linuxidc.com/Linux/2014-11/109226.htm
International Journal of Modelling, Identification and Control (IJMIC) Call For papers Special Issue on: Sliding Mode Control Theory and Applications Subject Coverage Suitable topics, include, but are not limited to, the following: Sliding mode control in power electronics Sliding mode control applications in robotics and complex motion steering systems Sliding mode observers and their applications Higher order sliding modes Output feedback sliding mode controllers Discrete time sliding mode controllers Combination artificial intelligence and sliding mode controllers Chattering analysis Notes for Prospective Authors Submitted papers should not have been previously published nor be currently under consideration for publication elsewhere. (N.B. Conference papers may only be submitted if the paper was not originally copyrighted and if it has been completely re-written). All papers are refereed through a peer review process. A guide for authors, sample copies and other relevant information for submitting papers are available on the Author Guidelines page Important Dates Submission deadline: August 31, 2011 Editors and Notes You may send one copy in the form of an MS Word file attached to an e-mail (details in Author Guidelines ) to the following: Prof. Shaocheng Qu Department of Information and Technology Central China Normal University Wuhan, Hubei 430079 P.R. China Email : qushaocheng@mail.ccnu.edu.cn Prof. Feng Qiao Faculty of Information and Control Engineering Shenyang Jianzhu University Shenyang, Liaoning 110168 P.R. China Email : fengqiao@sjzu.edu.cn Dr. Dongya Zhao College of Mechanical and Electronic Engineering China University of Petroleum Changping, Beijing 102249 P.R. China Email : dongyazhao@gmail.com Please include in your submission the title of the Special Issue, the title of the Journal and the name of the Guest Editor . Please visit: http://www.inderscience.com/browse/callpaper.php?callID=1510 Variable structure systems with sliding modes have recently become one of the most exciting research topics in variety of fields. This is mainly due to their inherent robustness with respect to the plant model uncertainty, parameter perturbation and external disturbance which are unavoidable in any industrial environment. Furthermore, numerous very successful engineering applications of the systems have recently been reported. Therefore, the purpose of the special issue is focused on state-of-the-art solutions in the field of sliding mode control system design and their industrial applications. We welcome original research papers that describe new ideas and approaches in theory and applications. Guest Editor : Prof. Shaocheng Qu, Central China Normal University, P.R. China Prof. Feng Qiao, Shenyang Jianzhu University, P.R. China Dr. Dongya Zhao, China University of Petroleum, P.R. China
石墨烯可以产生高能量超短脉冲 OPTICS EXPRESS,Vol. 17, P17630. http://www3.ntu.edu.sg/home2006/zhan0174/OE_graphene.pdf Abstract: We report on large energy pulse generation in an erbium-doped fiber laser passively mode-locked with atomic layer graphene. Stable mode locked pulses with single pulse energy up to 7.3 nJ and pulse width of 415 fs have been directly generated from the laser. Our results show that atomic layer graphene could be a promising saturable absorber for large energy mode locking.
标签: mode
