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Liu, L. (author), Xie, F. (author), Popov, M. (author), Hao, Zhiguo (author), Lekić, A. (author)
This article presents an accurate DC fault location method that applies parameter fitting. This technique first discusses the traveling wave (TW) propagation process in the decoupled line-mode network. We obtain the exact fault distance equation based on the analytical expressions for the wavefront of backward line-mode voltage TW. The adaptive...
conference paper 2023
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Xie, F. (author), Liu, L. (author), Hao, Zhiguo (author), Lekić, A. (author), Popov, M. (author)
Existing line protection methods for multi-terminal direct current (MTDC) systems are constrained by the placement and values of boundary elements. To overcome this limitation, this paper proposes a non-unit DC line protection method based on the normalized backward traveling waves (BTWs) of the 1-mode voltage. Firstly, this article studies...
conference paper 2023
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Xie, H. (author), Bellizio, Federica (author), Cremer, Jochen (author), Strbac, Goran (author)
Due to the increasing system stability issues caused by the technological revolutions of power system equipment, the assessment of the dynamic security of the systems for changing operating conditions (OCs) is nowadays crucial. To address the computational time problem of conventional dynamic security assessment tools, many machine learning ...
conference paper 2023
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Yang, Tao (author), Xie, Rongxian (author), Veljkovic, M. (author)
Bolt shear connectors have the advantage of efficient installation and demolition when used in prefabricated composite beams. When bolt shear connectors are damaged in the service period and replaced by new ones, the shear performance of replaced bolts is to be affected by the existing structural damage. This paper investigates the shear...
conference paper 2022
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Du, B. (author), Lin, Bin (author), Xie, Wei (author), Zhang, Weidong (author), Negenborn, R.R. (author), Pang, Y. (author)
This paper addresses the flexible formation problem for unmanned surface vehicles in the presence of obstacles. Building upon the leader-follower formation scheme, a hybrid line-of-sight based flexible platooning method is proposed for follower vehicle to keep tracking the leader ship. A fusion artificial potential field collision avoidance...
conference paper 2022
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Zhang, Xinglong (author), Peng, Yaoqian (author), Pan, W. (author), Xu, Xin (author), Xie, Haibin (author)
Distributed model predictive control (DMPC) concerns how to online control multiple robotic systems with constraints effectively. However, the nonlinearity, nonconvexity, and strong interconnections of dynamic system models and constraints can make the real-time and real-world DMPC implementations nontrivial. Reinforcement learning (RL)...
conference paper 2022
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Xie, Jiahong (author), Cheng, Haibo (author), Zhu, Rong (author), Wang, Ping (author), Liang, K. (author)
To date there are few researches on the semantic information of passwords, which leaves a gap preventing us from fully understanding the passwords characteristic and security. We propose a new password probability model for semantic information based on Markov Chain with both generalization and accuracy, called WordMarkov, that can capture the...
conference paper 2022
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He, Xiaoxi (author), Cheng, Haibo (author), Xie, Jiahong (author), Wang, Ping (author), Liang, K. (author)
Passwords have been widely used in online authentication, and they form the front line that protects our data security and privacy. But the security of password may be easily harmed by insecure password generator. Massive reports state that users are always keen to generate new passwords by reusing or fine-tuning old secrets. Once an old...
conference paper 2022
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Li, Shizhen (author), Liu, X. (author), Fan, Jiajie (author), Tan, C. (author), Wang, S. (author), Xie, Bin (author), Ye, H. (author)
The wide-bandgap semiconductors represented by GaN have a broad application prospect because of their high service temperature and high switch frequency. Quad-Flat-No-Lead (QFN) Package is currently one of the mainstream packaging methods due to its low cost and high efficiency. However, the low reliability of QFN used in GaN devices is still...
conference paper 2022
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Thonet, Thibaut (author), Clinchant, Stéphane (author), Lassance, Carlos (author), Isufi, E. (author), Ma, Jiaqi (author), Xie, Yutong (author), Renders, Jean Michel (author), Bronstein, Michael (author)
Graph neural networks (GNNs) have recently gained significant momentum in the recommendation community, demonstrating state-of-the-art performance in top-k recommendation and next-item recommendation. Despite promising results on GNN-based recommendation and search, most of the current GNN research remains essentially concentrated on more...
conference paper 2021
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Xie, Yuanhao (author), Cruz, Luis (author), Heck, Petra (author), Rellermeyer, Jan S. (author)
The development of artificial intelligence (AI) has made various industries eager to explore the benefits of AI. There is an increasing amount of research surrounding AI, most of which is centred on the development of new AI algorithms and techniques. However, the advent of AI is bringing an increasing set of practical problems related to AI...
conference paper 2021
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Bai, N. (author), Nourian, Pirouz (author), Xie, Anping (author), Pereira Roders, A. (author)
As one of the most important areas in the Palace Museum, Beijing, China, the Hall of Mental Cultivation had suffered from overcrowding of visitors before it was closed in 2016 for conservation. Preparing for the reopening in 2020, the Palace Museum decided to take the chance and initiate finer-grained tourism management in the Hall. This...
conference paper 2020
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Yu, J. (author), Du Nguyen, H.A. (author), Xie, L. (author), Taouil, M. (author), Hamdioui, S. (author)
CMOS technology and its continuous scaling have made electronics and computers accessible and affordable for almost everyone on the globe; in addition, they have enabled the solutions of a wide range of societal problems and applications. Today, however, both the technology and the computer architectures are facing severe challenges/walls making...
conference paper 2018
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Xie, Wei (author), Nunez, Alfredo (author), Maas, Ron (author), Li, Z. (author)
This paper presents a methodology to support decision making based on the tram wheel-rail interface condition. The methodology relies on the following measurements: tram failure log-files regarding wheel-sliding events, monitored acoustics data and open source weather information. The proposed methodology consists of three stages: 1) data...
conference paper 2018
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Abarca Prouza, A.N. (author), Xie, S. (author), Markenhof, Jules (author), Theuwissen, A.J.P.A.M. (author)
In this work, a novel approach is presented for measuring relative temperature variations inside the pixel array of a CMOS image sensor itself. This approach can give important information when compensation for dark (current) fixed pattern noise (FPN) is needed. The test image sensor consists of pixels and temperature sensors pixels (=Tixels)....
conference paper 2017
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Xie, Y. (author), Janssen, G.J.M. (author), van der Veen, A.J. (author)
A clock synchronization scheme is crucial for obtaining accuracy in time-based positioning systems. Existing clock synchronization schemes are mostly based on a simplified linear clock model, which unfortunately have a poor long-term synchronization accuracy. Assuming a two-way time transfer protocol, we propose a novel clock synchronization...
conference paper 2016
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Xie, X. (author), Verbraeck, A. (author), Gu, Feng (author)
Data assimilation is an analysis technique which aims to incorporate measured observations into a dynamic system model in order to produce accurate estimates of the current state variables of the system. Although data assimilation is conventionally applied in continuous system models, it is also a desired ability for its discrete event...
conference paper 2016
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Xie, N. (author), Theuwissen, A.J.P. (author)
Micro-Digital Sun Sensor (?DSS) is a sun detector which senses the respective angle between a satellite and the sun. It is composed of a solar cell power supply, a RF communication block and a CMOS Image Sensor (CIS) chip, which is called APS+. The paper describes the implementation of a prototype of the ?DSS APS+ processed in a standard 0.18?m...
conference paper 2011
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Leijtens, J. (author), Theuwissen, A. (author), Rao, P.R. (author), Wang, X. (author), Xie, N. (author)
It is generally known that active pixel sensors (APS) have a number of advantages over CCD detectors if it comes to cost for mass production, power consumption and ease of integration. Nevertheless, most space applications still use CCD detectors because they tend to give better performance and have a successful heritage. To this respect a...
conference paper 2007
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