http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Localized Mobility Management in MPLS-based Access Networks
Javier Carmona-Murillo,Jose-Luis Gonzalez-Sanchez,Francisco-Javier Rodriguez-Per,David Cortes-Polo 한국산학기술학회 2012 SmartCR Vol.2 No.2
The continuous efforts made towards efficient mobility management in next-generation wireless networks are one of the major challenges for next-generation mobile systems. To track host mobility, the IETF has developed some mobility management protocols such as Mobile IP and Proxy Mobile IPv6. These protocols set up a tunnel to forward packets to the mobile node while the user is away from its home network. The tunneling method provided by Multi-Protocol Label Switching can be profitably used to take advantage of the Multi-Protocol Label Switching traffic engineering capability to achieve fast-reroute when a mobile node changes its point of attachment to the network. Moreover, service disruption during handoffs causes excessive packet loss that needs to be minimized to support quality of service requirements of emerging applications. We present a performance evaluation and numerical results of the most representative host-based and network-based mobility management approaches. We highlight the importance of the tunneling method with special attention to those protocols that have integrated Multi-Protocol Label Switching in its access network.
Leveling: an Efficient VLC for Lossless Data Compression
Javier Joglar Alcubilla 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.3
Many of the standard compression methods are based, at their lowest level, in coding digital words of variable length or VLC, Huffman type, designed in 1952 or in any of its versions, as canonical. This article presents an VLC with greater efficiency than Huffman encoding, named as “Leveling”, which uses two variants, “Leveled Reordering” for low redundancy, e.g. for text and, “Segmented Leveling” for middle and high redundancy, for image processing. Leveling, developed by Javier Joglar in 1995, uses the concepts of “meaning” and “ordering” of the VLC codes generated, to get optimum performance in terms of “compression ratio”, higher than any other non-adaptive VLC.
Modular design and control of an upper limb exoskeleton
Javier Garrido,Wen Yu,Xiaoou Li 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.5
In this paper, we use modular design method to construct an upper limb exoskeleton. This new design method is more simple and easy for exoskeletons than the other techniques, and it is facility to be extended into more joints robots. We also propose a novel admittance control, which works in task space. The admittance control has PID form, and does not need the inverse kinematic and the dynamic model of the exoskeleton. The experimental results show that both the design and the controller work well for the upper limb exoskeleton.
An Anti-windup Integral Regulator for a DC-DC Boost Power Converter
Javier Moreno-Valenzuela 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10
In this paper, an anti–windup controller is proposed for the output regulation of a direct-current to direct–current (DC-DC)boost power converter. The system is affected by input saturation, modeled as a hard saturation function, which captures the fact that the duty cycle is signal limited between zero and one. In addition, an observer–based extension is discussed, which is useful to obviate the assumption of the input voltage knowledge. Numerical results provides a support for the given theory.