document

Hydrologic and cryospheric processes observed from space

Menenti, M. (author), Li, X. (author), Wang, J. (author), Vereecken, H. (author), Li, J. (author), Mancini, M. (author), Liu, Q. (author), Jia, L. (author), Li, J. (author), Kuenzer, C. (author), Huang, S. (author), Yesou, H. (author), Wen, J. (author), Kerr, Y. (author), Cheng, X. (author), Gourmelen, N. (author), Ke, C. (author), Ludwig, R. (author), Lin, H. (author), Eineder, M. (author), Ma, Y. (author), Su, Z.B. (author)

Ten Dragon 3 projects deal with hydrologic and cryosphere processes, with a focus on the Himalayas and Qinghai – Tibet Plateau, but not limited to that. At the 1st Dragon 3 Progress Symposium in 2013 a significant potential for a better and deeper integration appeared very clearly and we worked out an overview of the ten projects identifying...

conference paper 2015

document

WordMarkov: A New Password Probability Model of Semantics

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

document

Passtrans: An Improved Password Reuse Model Based on Transformer

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

document

Improved Wordpcfg for Passwords with Maximum Probability Segmentation

Li, Wenting (author), Yang, Jiahong (author), Cheng, Haibo (author), Wang, Ping (author), Liang, K. (author)

Modeling password distributions is a fundamental problem in password security, benefiting the research and applications on password guessing, password strength meters, honey password vaults, etc. As one of the best segment-based password models, WordPCFG has been proposed to capture individual semantic segments (called words) in passwords....

conference paper 2023

document

A Coflow-based Co-optimization Framework for High-performance Data Analytics

Cheng, Long (author), Wang, Ying (author), Pei, Yulong (author), Epema, D.H.J. (author)

Efficient execution of distributed database operators such as joining and aggregating is critical for the performance of big data analytics. With the increase of the compute speedup of modern CPUs, reducing the network<br/>communication time of these operators in large systems is becoming increasingly important, and also challenging current...

conference paper 2017

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An Ensemble Learning Framework for Vehicle Trajectory Prediction in Interactive Scenarios

Li, Z. (author), Lin, Yunlong (author), Cheng, Gong (author), Wang, X. (author), Liu, Qi (author), Gong, Jianwei (author), Lu, Chao (author)

Precisely modeling interactions and accurately predicting trajectories of surrounding vehicles are essential to the decision-making and path-planning of intelligent vehicles. This paper proposes a novel framework based on ensemble learning to improve the performance of trajectory predictions in interactive scenarios. The framework is termed...

conference paper 2022

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Guest Editorial Special Issue on Sensing and Machine Learning for Automotive Perception

Santra, Avik (author), Pandharipande, Ashish (author), Wang, Pu Perry (author), Gurbuz, Sevgi Zubeyde (author), Ibanez-Guzman, Javier (author), Cheng, Chih Hong (author), Dauwels, J.H.G. (author), Li, Guofa (author)

contribution to periodical 2023

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Driving Magnetostructural Transitions in Layered Intermetallic Compounds

Wang, J.L. (author), Caron, L. (author), Campbell, S.J. (author), Kennedy, S.J. (author), Hofmann, M. (author), Cheng, Z.X. (author), Md Din, M.F. (author), Studer, A.J. (author), Brück, E. (author), Dou, S.X. (author)

We report the dramatic effect of applied pressure and magnetic field on the layered intermetallic compound Pr0.5Y0.5Mn2Ge2. In the absence of pressure or magnetic field this compound displays interplanar ferromagnetism at room temperature and undergoes an isostructural first order magnetic transition (FOMT) to an antiferromagnetic state below...

journal article 2013

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Controls on precipitation and cloudiness in simulations of trade?wind cumulus as observed during RICO

VanZanten, M.C. (author), Stevens, B. (author), Nuijens, L. (author), Siebesma, A.P. (author), Ackerman, A. (author), Burnet, F. (author), Cheng, A. (author), Couvreux, F. (author), Jiang, H. (author), Khairoutdinov, M. (author), Kogan, Y. (author), Lewellen, D.C. (author), Mechem, D. (author), Nakamura, K. (author), Noda, A. (author), Shipway, B.J. (author), Slawinska, J. (author), Wang, S. (author), Wyszogrodzki, A. (author)

Twelve large?eddy simulations, with a wide range of microphysical representations, are compared to each other and to independent measurements. The measurements and the initial and forcing data for the simulations are taken from the undisturbed period of the Rain in Cumulus over the Ocean (RICO) field study. A regional downscaling of...

journal article 2010

document

Integrated Stiffness Analysis of Redundant Parallel Manipulator Based on Finite Element Method

Wang, S. (author), Cheng, G. (author), Pang, Y. (author), Lodewijks, G. (author)

An integrated stiffness model is established for a Planar Parallel Manipulator (PPM) with actuation redundancy based on Finite Element Method (FEM), and the static stiffness, dynamitic stiffness and moving stiffness of the PPM are analyzed according to the integrated stiffness model. Firstly, a dynamic model of flexible plane beam element is...

journal article 2015

document

Analysis of Injury Severity of Drivers Involved Different Types of Two-Vehicle Crashes Using Random-Parameters Logit Models with Heterogeneity in Means and Variances

Wu, Qiang (author), Song, Dongdong (author), Wang, Chenzhu (author), Chen, Fei (author), Cheng, Jianchuan (author), Easa, Said M. (author), Yang, Y. (author), Yang, Wenchen (author)

This study proposes random-parameters multinomial logit models, with heterogeneity in means and variances, to explore the differences in the factors influencing injury severities of drivers involved in different types of two-vehicle crashes. The models are verified using crash data from the United Kingdom (UK) over three years (2016–2018). Three...

journal article 2023

document

Theoretical study on regular reflection of shock wave-boundary layer interactions

Xue, S. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author), Wang, Chengpeng (author), Shi, Zhiwei (author), Cheng, Keming (author)

In this paper the configurations of shock wave-boundary layer interactions (SWBLI) are studied theoretically and experimentally in Mach number 2 and 2.5 flows on test models with various wedge angles ranging from to. The proposed theoretical method couples the free interaction theory (FIT) with the minimum entropy production (MEP) principle...

journal article 2020

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Network-Aware Locality Scheduling for Distributed Data Operators in Data Centers

Cheng, Long (author), Wang, Ying (author), Liu, Qingzhi (author), Epema, D.H.J. (author), Liu, Cheng (author), Mao, Ying (author), Murphy, John (author)

Large data centers are currently the mainstream infrastructures for big data processing. As one of the most fundamental tasks in these environments, the efficient execution of distributed data operators (e.g., join and aggregation) are still challenging current data systems, and one of the key performance issues is network communication time....

journal article 2021

document

Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits

Ying, Chong (author), Cheng, Bin (author), Zhao, Youwei (author), Huang, He Liang (author), Zhang, Y.N. (author), Gong, Ming (author), Wu, Yulin (author), Wang, S. (author), Liang, Futian (author)

Although near-term quantum computing devices are still limited by the quantity and quality of qubits in the so-called NISQ era, quantum computational advantage has been experimentally demonstrated. Moreover, hybrid architectures of quantum and classical computing have become the main paradigm for exhibiting NISQ applications, where low-depth...

journal article 2023

document

Practical Threshold Multi-Factor Authentication

Li, Wenting (author), Cheng, Haibo (author), Wang, Ping (author), Liang, K. (author)

Multi-factor authentication (MFA) has been widely used to safeguard high-value assets. Unlike single-factor authentication (e.g., password-only login), t-factor authentication (tFA) requires a user always to carry and present t specified factors so as to strengthen the security of login. Nevertheless, this may restrict user experience in...

journal article 2021

document

A Self-Bias-Flip with Charge Recycle Interface Circuit with No External Energy Reservoir for Piezoelectric Energy Harvesting Array

Li, Zhen (author), Chen, Zhiyuan (author), Wang, Jing (author), Wang, Jiawei (author), Jiang, Junmin (author), Du, S. (author), Cheng, Xu (author), Zeng, Xiaoyang (author), Han, Jun (author)

This article presents a piezoelectric energy harvesting (PEH) interface circuit using a new self-bias-flip with the charge recycle (SBFR) technique without employing any additional energy reservoir. Traditional designs, including synchronous-switch harvesting on inductor (SSHI), synchronous-switch harvesting on capacitor (SSHC), synchronous...

journal article 2023

document

Release of phosphorus through pretreatment of waste activated sludge differs essentially from that of carbon and nitrogen resources: Comparative analysis across four wastewater treatment facilities

Deng, Shaoyu (author), Liu, J. (author), Yang, Xiaofan (author), Sun, Dezhi (author), Wang, Aijie (author), van Loosdrecht, Mark C.M. (author), Cheng, Xiang (author)

The accumulation of phosphorus in activated sludge in wastewater treatment plants (WWTPs) provides potential for phosphorus recovery from sewage. This study delves into the potential for releasing phosphorus from waste activated sludge through two distinct treatment methods—thermal hydrolysis and pH adjustment. The investigation was conducted...

journal article 2024

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Synchronization of power systems under stochastic disturbances

Wang, Zhen (author), Xi, Kaihua (author), Cheng, Aijie (author), Lin, H.X. (author), Ran, André C.M. (author), van Schuppen, J.H. (author), Zhang, Chenghui (author)

The synchronization of power generators is an important condition for the proper functioning of a power system, in which the fluctuations in frequency and the phase angle differences between the generators are sufficiently small when subjected to stochastic disturbances. Serious fluctuations can prompt desynchronization, which may lead to...

journal article 2023

document

Sensing and Machine Learning for Automotive Perception: A Review

Pandharipande, Ashish (author), Cheng, Chih Hong (author), Dauwels, J.H.G. (author), Gurbuz, Sevgi Z. (author), Ibanez-Guzman, Javier (author), Li, Guofa (author), Piazzoni, Andrea (author), Wang, Pu (author), Santra, Avik (author)

Automotive perception involves understanding the external driving environment and the internal state of the vehicle cabin and occupants using sensor data. It is critical to achieving high levels of safety and autonomy in driving. This article provides an overview of different sensor modalities, such as cameras, radars, and light detection and...

journal article 2023

document

Synchronization of Coupled Phase Oscillators with Stochastic Disturbances and the Cycle Space of the Graph

Xi, Kaihua (author), Wang, Zhen (author), Cheng, Aijie (author), Lin, H.X. (author), van Schuppen, J.H. (author), Zhang, Chenghui (author)

The synchronization stability of a complex network system of coupled phase oscillators is discussed. In case the network is affected by disturbances, a stochastic linearized system of the coupled phase oscillators may be used to determine the fluctuations of phase differences in the lines between the nodes and to identify the vulnerable lines...

journal article 2023