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

Plug and Power: Fingerprinting USB Powered Peripherals via Power Side-channel

Spolaor, Riccardo (author), Liu, Hao (author), Turrin, Federico (author), Conti, M. (author), Cheng, Xiuzhen (author)

The literature and the news regularly report cases of exploiting Universal Serial Bus (USB) devices as attack tools for malware injections and private data exfiltration. To protect against such attacks, security researchers proposed different solutions to verify the identity of a USB device via side-channel information (e.g., timing or...

conference paper 2023

document

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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CluFlow: Cluster-based Flow Management in Software-Defined Wireless Sensor Networks

Liu, Qingzhi (author), Ozcelebi, Tanir (author), Cheng, Long (author), Kuipers, F.A. (author), Lukkien, Johan (author)

Software-defined networking (SDN) is a cornerstone of next-generation networks and has already led to numerous advantages for data-center networks and wide-area networks, for instance in terms of reduced management complexity and more fine-grained traffic engineering. However, the design and implementation of SDN within wireless sensor networks ...

conference paper 2019

document

Marine low cloud sensitivity to an idealized climate change: The CGILS LES intercomparison

Blossey, P.N. (author), Bretherton, C.S. (author), Zhang, M. (author), Cheng, A. (author), Endo, S. (author), Heus, T. (author), Liu, Y. (author), Lock, A.P. (author), De Roode, S.R. (author), Xu, K.M. (author)

Subtropical marine low cloud sensitivity to an idealized climate change is compared in six large-eddy simulation (LES) models as part of CGILS. July cloud cover is simulated at three locations over the subtropical northeast Pacific Ocean, which are typified by cold sea surface temperatures (SSTs) under well-mixed stratocumulus, cool SSTs under...

journal article 2013

document

CGILS: Results from the first phase of an international project to understand the physical mechanisms of low cloud feedbacks in single column models

Zhang, M. (author), Bretherton, C.S. (author), Blossey, P.N. (author), Austin, P.H. (author), Bacmeister, J.T. (author), Bony, S. (author), Brient, F. (author), Cheedela, S.K. (author), Cheng, A. (author), Del Genio, A.D. (author), De Roode, S.R. (author), Endo, S. (author), Franklin, C.N. (author), Golaz, J.C. (author), Hannay, C. (author), Heus, T. (author), Isotta, F.A. (author), Dufresne, J.L. (author), Kang, I.S. (author), Kawai, H. (author), Köhler, M. (author), Larson, V.E. (author), Liu, Y. (author), Lock, A.P. (author), Lohmann, U. (author), Khairoutdinov, M.F. (author), Molod, A.M. (author), Neggers, R.A.J. (author), Rasch, P. (author), Sandu, I. (author), Senkbeil, R. (author), Siebesma, A.P. (author), Siegenthaler-Le Drian, C. (author), Stevens, B. (author), Suarez, M.J. (author), Xu, K.M. (author), Von Salzen, K. (author), Webb, M.J. (author), Wolf, A. (author), Zhao, M. (author)

CGILS—the CFMIP-GASS Intercomparison of Large Eddy Models (LESs) and single column models (SCMs)—investigates the mechanisms of cloud feedback in SCMs and LESs under idealized climate change perturbation. This paper describes the CGILS results from 15 SCMs and 8 LES models. Three cloud regimes over the subtropical oceans are studied: shallow...

journal article 2013

document

Large diameter laterally loaded piles in sand: Numerical evaluation of soil stress paths and relevance of laboratory soil element testing

Cheng, Xiaoyang (author), Ibraim, Erdin (author), Liu, Haoyuan (author), Pisano, F. (author), Diambra, Andrea (author)

This paper uses 3D numerical analyses to investigate the stress path experienced by soil elements around large diameter piles in sand subjected to monotonic drained lateral loading. Inspection of the loading-induced stresses in the soil revealed the multiaxial nature of these stress paths, which are characterised by rotation of one or more...

journal article 2023

document

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

3D FE-Informed Laboratory Soil Testing for the Design of Offshore Wind Turbine Monopiles

Cheng, Xiaoyang (author), Diambra, Andrea (author), Ibraim, Erdin (author), Liu, H. (author), Pisano, F. (author)

Based on advanced 3D finite element modelling, this paper analyses the stress paths experienced by soil elements in the vicinity of a monopile foundation for offshore wind turbines subjected to cyclic loading with the aim of informing soil laboratory testing in support of monopile foundation design. It is shown that the soil elements in front of...

journal article 2021

document

Spatio-temporal prediction of missing temperature with stochastic Poisson equations: The LC2019 team winning entry for the EVA 2019 data competition

Cheng, D. (author), Liu, Z. (author)

This paper presents our winning entry for the EVA 2019 data competition, the aim of which is to predict Red Sea surface temperature extremes over space and time. To achieve this, we used a stochastic partial differential equation (Poisson equation) based method, improved through a regularization to penalize large magnitudes of solutions. This...

journal article 2020

document

Evaluation of the fatigue properties for the long-term service asphalt pavement using the semi-circular bending tests and stereo digital image correlation technique

Cheng, Long (author), Zhang, Lei (author), Liu, X. (author), Yuan, Fang (author), Ma, Yang (author), Sun, Yinqing (author)

Reliable assessment of the fatigue resistance of asphalt pavement with a long-term service is critically crucial for the rational formulation of original pavement utilization strategies in reconstruction and expansion projects. Currently, the pavement performance evaluation indicators are mainly used to guide pavement preventive maintenance,...

journal article 2022

document

Planetary gears feature extraction and fault diagnosis method based on VMD and CNN

Liu, C. (author), Cheng, Gang (author), Chen, Xihui (author), Pang, Y. (author)

Given local weak feature information, a novel feature extraction and fault diagnosis method for planetary gears based on variational mode decomposition (VMD), singular value decomposition (SVD), and convolutional neural network (CNN) is proposed. VMD was used to decompose the original vibration signal to mode components. The mode matrix was...

journal article 2018

document

Effect of microporous layer structural parameters on heat and mass transfer in proton exchange membrane fuel cells

Zhang, Zhenya (author), Mao, Jia (author), Wei, Houyu (author), Cheng, Chuanxiao (author), Liu, Zhengxuan (author)

Proton exchange membrane fuel cells offer promising clean energy solutions for various applications. However, their performance relies heavily on the properties of the microporous layer, which plays a crucial role in transporting and distributing the components in the fuel cell. To date, the potential for optimising the microporous layer...

journal article 2024

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

document

Cluster-based flow control in hybrid software-defined wireless sensor networks

Liu, Qingzhi (author), Cheng, Long (author), Alves, R.C.A. (author), Alves, Renan (author), Ozcelebi, Tanir (author), Kuipers, F.A. (author), Xu, Guixian (author), Lukkien, Johan (author), Chen, Shanzhi (author)

Software-defined networking (SDN) is a cornerstone of next-generation networks and has already led to numerous advantages for data-center networks and wide-area networks. However, SDN is not widely adopted in constrained networks, such as Wireless Sensor Networks (WSN), due to excessive control overhead, lossy medium, and in-band control...

journal article 2021

document

Controlling the Lithium-Metal Growth to Enable Low-Lithium-Metal-Excess All-Solid-State Lithium-Metal Batteries

Liu, M. (author), Wang, C. (author), Cheng, Z. (author), Ganapathy, S. (author), Haverkate, Lucas A. (author), Unnikrishnan, Sandeep (author), Wagemaker, M. (author)

Solid-state lithium-metal batteries are considered to be promising candidates for next-generation high-energy density storage devices to power electrical vehicles. Critical challenges for solid-state lithium-metal batteries include the large morphological changes associated with the plating and stripping of lithium metal and decomposition of...

journal article 2020

document

Revealing the Impact of Space-Charge Layers on the Li-Ion Transport in All-Solid-State Batteries

Cheng, Zhu (author), Liu, M. (author), Ganapathy, S. (author), Li, Z. (author), Zhang, Xiaoyu (author), He, Ping (author), Zhou, Haoshen (author), Wagemaker, M. (author), Li, Chau (author)

The influence of space-charge layers on the ionic charge transport over cathode-solid electrolyte interfaces in all-solid-state batteries remains unclear because of the difficulty to unravel it from other contributions to the ion transport over the interfaces. Here, we reveal the effect of the space-charge layers by systematically tuning the...

journal article 2020

document

Efficient Li-Metal Plating/Stripping in Carbonate Electrolytes Using a LiNO₃-Gel Polymer Electrolyte, Monitored by Operando Neutron Depth Profiling

Liu, M. (author), Cheng, Z. (author), Qian, K. (author), Verhallen, T.W. (author), Wang, C. (author), Wagemaker, M. (author)

The development of safe and high-performance Li-metal anodes is crucial to meet the demanded increase in energy density of batteries. However, severe reactivity of Li metal with typical electrolytes and dendrite formation leads to a poor cycle life and safety concerns. Therefore, it is essential to develop electrolytes that passivate the...

journal article 2019

document

Current and future trends in topology optimization for additive manufacturing

Liu, Jikai (author), Gaynor, Andrew T. (author), Chen, Shikui (author), Kang, Zhan (author), Suresh, Krishnan (author), Takezawa, Akihiro (author), Li, Lei (author), Kato, Junji (author), Tang, Jinyuan (author), Wang, C.C. (author), Cheng, Lin (author), Liang, Xuan (author), To, Albert. C. (author)

Manufacturing-oriented topology optimization has been extensively studied the past two decades, in particular for the conventional manufacturing methods, for example, machining and injection molding or casting. Both design and manufacturing engineers have benefited from these efforts because of the close-to-optimal and friendly-to-manufacture...

journal article 2018

document

Tandem Interface and Bulk Li-Ion Transport in a Hybrid Solid Electrolyte with Microsized Active Filler

Liu, M. (author), Cheng, Z. (author), Ganapathy, S. (author), Wang, C. (author), Haverkate, Lucas A. (author), Tułodziecki, Michał (author), Unnikrishnan, Sandeep (author), Wagemaker, M. (author)

In common hybrid solid electrolytes (HSEs), either the ionic conductivity of the polymer electrolyte is enhanced by the presence of a nanosized inorganic filler, which effectively decrease the glass-transition temperature, or the polymer solid electrolyte acts mostly as a flexible host for the inorganic solid electrolyte, the latter providing...

journal article 2019