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Zou, P. (author)The submerged floating tunnel (SFT), also called an Archimedes Bridge, is a new type of infrastructure for wide and deep sea-crossings, regarded as one of the alternatives to bored and immersed tunnels and bridges. It is afloat in water employing its buoyancy and a support system to balance its self-weight. However, no prototype SFT has yet been...doctoral thesis 2022
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Yue, X. (author), Chen, Zhelun (author), Zou, Yiwei (author), Du, S. (author)Ultrasonic wireless power transfer (WPT) has been proved to be a promising approach to power biomedical implants. To extract the energy generated from the transducer, a rectifier is typically required. Previous inductor-based rectifiers (SSHI and SECE) require a large off-chip inductor to achieve good performance, which is not desired for...conference paper 2022
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Zou, Yiwei (author), Du, S. (author)Piezoelectric energy harvesting (PEH) has attracted much attention as an approach to exploit ambient vibrational energy to power self-sustained devices. Among the proposed interface circuits for PEH, Synchronized Switch Harvesting on Capacitor (SSHC) rectifier distinguishes itself since it achieves high power efficiency while requires no...conference paper 2022
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Yue, X. (author), Zou, Yiwei (author), Chen, Zhelun (author), Liang, Junrui (author), Du, S. (author)Synchronized switch harvesting on inductor (SSHI) is an efficient active rectifier to extract energy generated from piezoelectric transducer in piezoelectric energy harvesting system. Unlike passive rectifiers, SSHI rectifiers require a power supply to drive synchronized switches. Unfortunately, there is no stable supply when the system starts...conference paper 2022
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Zou, Yiwei (author), Yue, X. (author), Du, S. (author)A nanopower highly efficient low-dropout (LDO) regulator for energy harvesting (EH) applications is presented in this paper. The LDO is fully autonomous with a bandgap reference (BGR) featuring a novel bandgap supply-switching (SS) topology, an over-voltage protection (OVP), a under-voltage lockout (UVLO) and control block to obtain stable...conference paper 2022
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Zhou, Hengshun (author), Du, Jun (author), Zou, Gongzhen (author), Nian, Zhaoxu (author), Lee, Chin Hui (author), Siniscalchi, Sabato Marco (author), Watanabe, Shinji (author), Scharenborg, O.E. (author), Chen, Jingdong (author)In this paper, we describe and release publicly the audio-visual wake word spotting (WWS) database in the MISP2021 Challenge, which covers a range of scenarios of audio and video data collected by near-, mid-, and far-field microphone arrays, and cameras, to create a shared and publicly available database for WWS. The database and the code ...journal article 2022
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Zou, Yingxue (author), Pang, Ling (author), Xu, S. (author), Wu, Shaopeng (author), Yuan, Miao (author), Amirkhanian, Serji (author), Xu, Haiqin (author), Lv, Yang (author), Gao, Xiang (author)During the service period, asphalt materials are affected by various natural factors, including heat, ultraviolet light, oxygen and moisture, etc., resulting in the reduction of pavement performance, the increase of pavement distress and shortening of service life. This study aims to investigate the aging performance of asphalt under multiple...journal article 2022
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Zou, P. (author), Bricker, J.D. (author), Chen, L. Z. (author), Uijttewaal, W.S.J. (author), Ferreira, Carlos (author)In order to assess the dynamic performance of a submerged floating tunnel (SFT) subject to flow-induced vibration (FIV) conditions in a practical engineering application, a one-way fluid–structure interaction (FSI) model consisting of multi-scale hydrodynamic solvers combined with the finite element method (FEM) is established. A typical long...journal article 2022
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Zou, L. (author), Zhan, Xiu xiu (author), Sun, Jie (author), Hanjalic, A. (author), Wang, H. (author)Temporal networks refer to networks like physical contact networks whose topology changes over time. Predicting future temporal network is crucial e.g., to forecast the epidemics. Existing prediction methods are either relatively accurate but black-box, or white-box but less accurate. The lack of interpretable and accurate prediction methods...journal article 2022
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Heng, J. (author), Zhou, Zhixiang (author), Zou, Yang (author), Kaewunruen, Sakdirat (author)Rib-to-deck (RD) welded joints in orthotropic steel decks (OSDs) of bridges demonstrates two major fatigue failure models, including the toe-to-deck (TTD) cracking and root-to-deck (RTD) cracking. Generally, the sole failure model is employed in the fatigue assessment of RD joints, causing a hot dispute on the dominant failure model. In this...journal article 2022
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Ren, Mengmeng (author), Kang, Yi (author), Zhao, Junxue (author), Zou, Chong (author), Shi, Ruimeng (author), Li, Bin (author), Roekaerts, D.J.E.M. (author)Oxy-fuel combustion of coal pyrolysis gas has recently been proposed to serve as internal heat source of a vertical low-temperature pyrolysis furnace, in order to make the output pyrolysis gas nearly free of nitrogen and widely useful. To keep the pyrolysis temperature and the heat carrier gas volume unchanged from air combustion to oxy-fuel...journal article 2022
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Yao, Dengzhi (author), Wang, Ju (author), Cai, Yao (author), Zhao, Tingting (author), An, Xizhong (author), Zhang, Hao (author), Fu, Haitao (author), Yang, Xiaohong (author), Zou, Qingchuan (author), Wang, L. (author)Understanding and controlling the composition segregation during powder spreading is of key importance in the additive manufacturing (AM) of composite materials. Under this circumstance, the segregation behavior of WC/316 L composite powders during spreading in laser powder bed fusion (LPBF) AM was numerically investigated by the discrete...journal article 2022
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Zou, J. (author), Cicirello, A. (author), Iliopoulos, Alexandros (author), Lourens, E. (author)Fatigue assessment in offshore wind turbine support structures requires the monitoring of strains below the mudline, where the highest bending moments occur. However, direct measurement of these strains is generally impractical. This paper presents the validation of a virtual sensing technique based on the Gaussian process latent force model...conference paper 2022
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Ren, Mengmeng (author), Wang, Shuzhong (author), Romero-Anton, N. (author), Zhao, Junxue (author), Zou, Chong (author), Roekaerts, D.J.E.M. (author)Eddy dissipation concept (EDC) model and flamelet generated manifolds (FGM) model are developed separately to study the temperature profiles and extinction limits of non-premixed hydrothermal flames. Predictions by the two models are evaluated comparatively by experimental data in literatures. FGM model shows relatively better prediction of...journal article 2021
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Zou, P. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)The interaction between an oceanic internal solitary wave (ISW) and a prototype submerged floating tunnel (SFT) is numerically investigated. Effect of oceanic internal solitary wave amplitude, the relative distance of the SFT to the pycnocline, cross-sectional geometry of the SFT, and the density ratio of the two fluid layers are analyzed. At...journal article 2021
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Sagastizabal, R.E. (author), Klaver, B. A. (author), Rol, M.A. (author), Negîrneac, V. (author), Zou, X. (author), Muthusubramanian, N. (author), Beekman, M. (author), Zachariadis, C. (author), Ostroukh, V.P. (author), Haider, S.N. (author), Bruno, A. (author), DiCarlo, L. (author)The preparation of thermal equilibrium states is important for the simulation of condensed matter and cosmology systems using a quantum computer. We present a method to prepare such mixed states with unitary operators and demonstrate this technique experimentally using a gate-based quantum processor. Our method targets the generation of...journal article 2021
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Liu, Shengjun (author), Liu, Tao (author), Zou, Qiang (author), Wang, W. (author), Doubrovski, E.L. (author), Wang, Charlie C.L. (author)Lattice structures have been widely used in various applications of additive manufacturing due to its superior physical properties. If modeled by triangular meshes, a lattice structure with huge number of struts would consume massive memory. This hinders the use of lattice structures in large-scale applications (e.g., to design the interior...journal article 2021
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Zou, Yingxue (author), Amirkhanian, Serji (author), Xu, S. (author), Li, Yuanyuan (author), Wang, Yafei (author), Zhang, Jianwei (author)Aqueous solution is one of the main factors of asphalt pavement disease. However, the physicochemical changes of asphalt are ambiguous during immersion in different aqueous solutions. This study evaluated the physicochemical properties of asphalt under the action of different aqueous solutions to further understand the mechanism of moisture...journal article 2021
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Zou, P. (author), Bricker, J.D. (author), Uijttewaal, W.S.J. (author)Concepts of a submerged floating tunnel (SFT) for novel sea-crossings have been researched in recent years. An SFT tube should be moored afloat by tensioned mooring systems to maintain the tube position under complex hydrodynamic loads. In-line force is amongst the dominant hydrodynamic parameters in the SFT cross-section design and the...journal article 2021
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Zou, Sheng (author), Xiao, Hanbin (author), Ye, Fangping (author), Li, Z. (author), Tang, Wenzhi (author), Zhu, Feng (author), Chen, Chentong (author), Zhu, Chao (author)The inevitably formed residual stress in the Selective Laser Melting (SLM) process leads to distortion, crack and even delamination of the workpiece. Single laser is commonly applied during SLM processing. However, its productivity is much lower than multiple lasers. In addition, the research of residual stress with multi-laser condition...journal article 2020