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Xu, Y. (author), de Croon, G.C.H.E. (author)In this paper, we propose a learning-based lightweight visual-inertial odometry (VIO) based on an uncertainty-aware pose network and an extended Kalman filter (EKF). The pose network serving as the VIO vision front-end predicts the relative motion of the camera between consecutive image frames and estimates the prediction uncertainty. The...conference paper 2023
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Xu, Y. (author), de Croon, G.C.H.E. (author)When deployed onboard micro air vehicles (MAVs) with limited processing power, visual ego-motion estimation solutions face an efficiency-accuracy trade-off. This paper proposes an aerodynamic-model-aided approach that emphasizes time efficiency over estimation accuracy. A linear drag force model of propellers guarantees bounded estimation errors...conference paper 2023
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Wan, Z. (author), Chang, Z. (author), Xu, Y. (author), Šavija, B. (author)In this paper, optimization of vascular structure of self-healing concrete is performed with deep neural network (DNN). An input representation method is proposed to effectively represent the concrete beams with 6 round pores in the middle span as well as benefit the optimization process. To investigate the feasibility of using DNN for...journal article 2023
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Xu, J. (author), Fahmy-Garcia, Shorouk (author), Wesdorp, Marinus A. (author), Forte, Lucia (author), De Luca, Claudio (author), Filardo, Giuseppe (author), Labberté, Margot (author), Kok, Joeri (author), Nickel, Joachim (author), van Osch, G.J.V.M. (author)Despite promising clinical results in osteochondral defect repair, a recently developed bi-layered collagen/collagen-magnesium-hydroxyapatite scaffold has demonstrated less optimal subchondral bone repair. This study aimed to improve the bone repair potential of this scaffold by adsorbing bone morphogenetic protein 2 (BMP-2) and/or platelet...journal article 2023
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Zhang, Yanxu (author), Wu, Peipei (author), Xu, Ruochong (author), Wang, Xuantong (author), Lei, Lili (author), Schartup, Amina T. (author), Peng, Yiming (author), Pang, Qiaotong (author), Luijendijk, Arjen (author)Marine plastic pollution poses a potential threat to the ecosystem, but the sources and their magnitudes remain largely unclear. Existing bottom-up emission inventories vary among studies for two to three orders of magnitudes (OMs). Here, we adopt a top-down approach that uses observed dataset of sea surface plastic concentrations and an...journal article 2023
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Zhou, Liangbin (author), Xu, J. (author), Schwab, Andrea (author), Tong, Wenxue (author), Zheng, Lizhen (author), Li, Zhuo (author), Xu, Shunxiang (author), van Osch, G.J.V.M. (author), Wen, Chunyi (author), Qin, Ling (author)As a highly specialized shock-absorbing connective tissue, articular cartilage (AC) has very limited self-repair capacity after traumatic injuries, posing a heavy socioeconomic burden. Common clinical therapies for small- to medium-size focal AC defects are well-developed endogenous repair and cell-based strategies, including microfracture,...review 2023
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Fang, Li (author), Jin, Jianbing (author), Segers, Arjo (author), Liao, Hong (author), Li, Ke (author), Xu, Bufan (author), Han, Wei (author), Pang, Mijie (author), Lin, H.X. (author)Statistical methods, particularly machine learning models, have gained significant popularity in air quality predictions. These prediction models are commonly trained using the historical measurement datasets independently collected at the environmental monitoring stations and their operational forecasts in advance using inputs of the real-time...journal article 2023
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- He, Rui (author), Tsouvalas, A. (author), Xu, Xiaomei (author), Dong, Lijun (author) contribution to periodical 2023
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Xu, Liangliang (author), Li, X. (author), Atif, Muhammad (author), Li, Yulong (author)Foamed concrete is an essential material in engineering that can be categorized into two types based on density distribution, namely uniform foamed concrete (UFC) and gradient foamed concrete (GFC). However, there exists a research gap concerning the mesoscopic deformation mechanism of UFC and GFC. The objective of this research is to bridge...journal article 2023
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Xu, Y. (author), Šavija, B. (author)Auxetic cementitious composites (ACCs) with improved mechanical properties are created, by casting 3D printed polymeric auxetic reinforcement structures inside cementitious mortar. Four types of ACCs incorporating reinforcement with different auxetic mechanisms were prepared: “re-entrant” (RE), “rotating-square” (RS), “chiral” (CR) and ...journal article 2023
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Xu, Chaoran (author), Nelson-Mercer, Benjamin T. (author), Bricker, J.D. (author), Davlasheridze, Meri (author), Ross, Ashley D. (author), Jia, Jianjun (author)Hurricane Ike, which struck the United States in September 2008, was the ninth most expensive hurricane in terms of damages. It caused nearly USD 30 billion in damage after making landfall on the Bolivar Peninsula, Texas. We used the Delft3d-FM/SWAN hydrodynamic and spectral wave model to simulate the storm surge inundation around Galveston...journal article 2023
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Zhang, Ruihua (author), Xiao, Rong (author), Wang, Feifei (author), Chu, Wenhai (author), Hu, Jinglong (author), Zhang, Yu (author), Jin, Wei (author), van der Hoek, J.P. (author), Xu, Zuxin (author)The illicit connection of sewage pipes to stormwater pipes commonly occurs in urban stormwater systems. This brings problems that sewage might be directly discharges into natural water and even drinking water sources without treatment, posing risks to ecological safety. Sewage contains various unknown dissolved organic matter (DOM), which could...journal article 2023
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Xu, Jing (author), Yan, Xiaoxi (author), Figueroa, C.A. (author), Williams, Joseph Jay (author), Chakraborty, Bibhas (author)Technological advancements have made it possible to deliver mobile health interventions to individuals. A novel framework that has emerged from such advancements is the just-in-time adaptive intervention, which aims to suggest the right support to the individuals when their needs arise. The micro-randomized trial design has been proposed...journal article 2023
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Wei, Ziyi (author), Huang, Kai (author), Chen, Ying (author), Wang, D. (author), Yu, Yajuan (author), Xu, Ming (author), Kapelan, Z. (author)To alleviate the geographical mismatch between supply and demand of water resources, virtual water trade had attracted extensive attention. Many studies had estimated the virtual water flow and measured the virtual water inequality using Environmental Input-Output (EIO) model. However, EIO model ignores the feedback effect in the trade, which...journal article 2023
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Pan, Tanbo (author), Zheng, Yonglai (author), Zhou, Y. (author), Luo, Wenbin (author), Xu, Xubing (author), Hou, Chenyu (author), Zhou, Yujue (author)This study presents a damage pattern recognition approach for corroded steel beams strengthened by CFRP anchorage system based on acoustic emission clustering analysis. The proposed method includes four steps: acoustic emission signal acquisition, feature extraction, clustering analysis, and damage pattern recognition. Four corroded beams...journal article 2023
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Zhuang, Linzhou (author), Li, Zhiheng (author), Li, Mengran (author), Tao, Haolan (author), Mao, Xin (author), Lian, Cheng (author), Ge, Lei (author), Du, Aijun (author), Xu, Zhi (author)The highly efficient and stable electrolysis needs the rational control of the catalytically active interface during the reactions. Here we report a new operando surface restructuring pathway activated by pairing catalyst and electrolyte ions. Using SrCoO<sub>3-δ</sub>-based perovskites as model catalysts, we unveil the critical role of...journal article 2023
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van Rooijen, W.A. (author), Habibi, P. (author), Xu, K. (author), Dey, P. (author), Vlugt, T.J.H. (author), Hajibeygi, H. (author), Moultos, O. (author)Data for several key thermodynamic and transport properties needed for technologies using hydrogen (H<sub>2</sub>), such as underground H<sub>2</sub> storage and H<sub>2</sub>O electrolysis are scarce or completely missing. Force field-based Molecular Dynamics (MD) and Continuous Fractional Component Monte Carlo (CFCMC) simulations are...journal article 2023
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Kumar Ashish, Prabin (author), Sreeram, Anand (author), Xu, Xiong (author), Chandrasekar, Pavan (author), Jagadeesh, A. (author), Adwani, Dheeraj (author), Kumar Padhan, Rabindra (author)The widespread production and consumption of plastics is a pressing global issue that requires multifaceted approaches and solutions. In terms of recycling, one of the ways to repurpose waste plastics in the construction industry would be to utilize them for asphalt pavement-related applications. Although this approach can potentially provide...review 2023
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Babcock, E. (author), Salhi, Z. (author), Feoktystov, A. (author), Bannenberg, L.J. (author), Parnell, S.R. (author), Alba Venero, D. (author), Hutanu, V. (author), Thoma, H. (author), Xu, J. (author)The JCNS has been developing and using in-situ polarized neutron spin filters for many applications. The system used for analysis on MARIA and polarization for TOPAS were completed about 10 years ago with the MARIA system in standard operation for users and the TOPAS system employed for a long measurement on the POLI instrument. In the...journal article 2023
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Wan, Pei (author), Wu, Shaopeng (author), Liu, Quantao (author), Wang, Huan (author), Gong, Xing (author), Zhao, Zenggang (author), Xu, S. (author), Jiang, Jian (author), Fan, Lulu (author), Tu, Liangliang (author)Self-healing is a biological phenomenon in which living organism responds to the suffered damage in a complex way. Inspired by the self-healing phenomenon in nature, various biomimetic healing methods rooted in intrinsic or extrinsic healing mechanisms have been explored. Research on novel self-healing asphalt materials with intelligent...review 2023