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Zhao, Changxu (author), Yarovoy, Alexander (author), Roederer, A.G. (author), Aslan, Y. (author)Design of millimeter-wave arrays for base stations operating in dense urban environment is investigated. Innovative designs for linear subarrays with shaped beam patterns for hybrid beamforming are proposed. The number of elements and element spacings in the subarrays are optimally selected based on a pattern matching technique. The subarrays...conference paper 2023
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Pan, Y. (author), Guo, Hui (author), Guan, Wei (author), Zhao, Yongli (author)Rutting is one of the most common distresses in early damage to asphalt pavements. It can raise the risk of ride safety issues, accelerate pavement deterioration, and increase maintenance costs. To investigate the factors that affect the rutting resistance of asphalt mixtures, internal factors (such as aggregate gradation, asphalt content,...journal article 2023
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Zhao, Z. (author), Robu, Bogdan (author), Landau, Ioan (author), Dugard, Luc (author), Marchand, Nicolas (author), Job, Louis (author)In this paper, we focus on the French Macro-economic model. We use real economic data, available as time series, starting from 1980s and openly provided by the INSEE. Variables such as Gross Domestic Production, Exportation, Importation, Household Consumption, Gross Fixed Capital Formation and Public expenditure are included in the analysis....conference paper 2023
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Zhao, Guofeng (author), Moulijn, J.A. (author), Kapteijn, F. (author), Dautzenberg, Frits M. (author), Xu, Bin (author), Lu, Yong (author)Heterogeneous catalysis plays a pivotal role in the current chemical and energy vectors production. Notably, to fully utilize the intrinsic activity and selectivity of a catalyst, the chemical reactor has to be designed and operated optimally to achieve enhanced heat/mass transfer, well-defined contact time of reactants, uniform flow pattern,...journal article 2023
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Li, Jie (author), Xin, Haohui (author), Wang, Zhiqiang (author), Veljkovic, M. (author), Bingzhen, Zhao (author), Zhao, Junjie (author), Correia, José A.F.O. (author)High strength bolts are widely used in the engineering field due to their good compressive properties. Accurate assessment of the ultimate capacity performance of high strength bolts under combined loading is essential to ensure the safety of steel structures in the connection zone. Existing studies are not sufficiently clear on the economic...journal article 2023
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Subhan, Fazle (author), Ali, Y. (author), Zhao, Shengchuan (author), Oviedo-Trespalacios, O. (author)Evaluating road safety improvements becomes important because it can assist policymakers in allocating economic resources to improve safety and implementing effective policy interventions. As such, this study aims to estimate the value of road safety risk measures using a new modeling approach for willingness-to-pay (WTP). Specifically, this...journal article 2023
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van der Werf, Verena M. (author), Zhao, J. (author), Koning, Jim S. (author), Nespoli, J. (author), Thieme, J. (author), Bus, M. (author), Savenije, T.J. (author)Metal-halide perovskites deposited by wet-chemical deposition have demonstrated great potential for various electronic applications, including solar cells. A remaining question is how light-induced excess charges become distributed over such polycrystalline material. Here, we examine the local conductive properties of MAPbI<sub>3</sub> and...journal article 2023
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Zhao, X. (author), Huang, Shuangchao (author), Yin, Shan (author), Yang, Jizhong (author), Yang, Z. (author), Tao, Gongquan (author), Wen, Zefeng (author)A time-domain finite element model is developed to study the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. LAZs on one rail, i.e., unilateral LAZs occurring more likely, is treated for a speed up to 500 km/h. Structural vibrations of wheelset are analyzed to explain the...journal article 2023
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Schultheis, M. (author), Zhao, H. (author), Zwitter, T. (author), Hladczuk, N.A. (author), Guerra, R. (author), Lammers, U. L. (author), Bakker, J. (author), Teodoro, P. de (author), García-Lario, P. (author)Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for '220 million sources in the wavelength range 330 nm ≤ λ ≤ 1050 nm (XP spectra). Synthetic photometry directly tied to a flux in physical units can be obtained from these spectra for any passband fully enclosed in this wavelength range. We describe how...journal article 2023
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- Guido, Rodrigo Capobianco (author), Adali, Tulay (author), Bjornson, Emil (author), Blanc-Feraud, Laure (author), Braga-Neto, Ulisses (author), Ghoraani, Behnaz (author), Jutten, Christian (author), van der Veen, A.J. (author), Zhao, Hong Vicky (author), Zhu, Xiaoxing (author) contribution to periodical 2023
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Esgin, Muhammed F. (author), Ersoy, O. (author), Kuchta, Veronika (author), Loss, Julian (author), Sakzad, Amin (author), Steinfeld, Ron (author), Yang, Xiangwen (author), Zhao, Raymond K. (author)In this work, we study the blockchain leader election problem. The purpose of such protocols is to elect a leader who decides on the next block to be appended to the blockchain, for each block proposal round. Solutions to this problem are vital for the security of blockchain systems. We introduce an efficient blockchain leader election method...conference paper 2023
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Guo, Hao (author), Zhao, C. (author), Gao, Jianxiang (author), Yang, Wenyun (author), Hu, Xufeng (author), Ma, Xiaobai (author), Jiao, Xuesheng (author), Yang, Jinbo (author), Sun, Kai (author), Chen, Dongfeng (author)To realize concurrently the high-energy density and excellent cycling stability, maximum utilization of redox couple, minimization of detrimental phase transition, and structural degradation of O3-type layered oxide cathodes are critical for developing Na-ion batteries. Ni<sup>2+</sup>/Ni<sup>4+</sup> redox couple showing multielectron...journal article 2023
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Zhao, Yingliang (author), Sun, Yong (author), Guo, Z. (author), Qiu, Jingping (author), Sun, Xiaogang (author)Hazardous wastes are commonly immobilized using cementitious materials. Ettringite (Ca<sub>6</sub>Al<sub>2</sub>(OH)<sub>12</sub>(SO<sub>4</sub>)<sub>3</sub>∙26H<sub>2</sub>O) is one of the main components of hydrated cement and is known to stabilize anionic species. Thus, it is a promising material for the stabilization of arsenate (As(V))...journal article 2023
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Du, L. (author), Zhao, Xiujuan (author), Poelma, René H. (author), van Driel, W.D. (author), Zhang, Kouchi (author)SnBiAgCu solder alloy is an attractive soldering material for temperature-sensitive electronic devices due to its excellent creep properties. This study firstly reports the creep properties of SnBiAgCu solder alloy under different temperatures. Results show that the addition of Bi resulted in better creep resistance compared with that of...conference paper 2023
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Schultheis, M. (author), Zhao, H. (author), Zwitter, T. (author), Hladczuk, N.A. (author), Guerra, R. (author), Lammers, U. L. (author), Bakker, J. (author), Teodoro, P. de (author), García-Lario, P. (author)The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epoch survey, Gaia also observes several million extragalactic objects down to a magnitude of G 21 mag. Due to the nature of the Gaia onboard-selection algorithms, these...journal article 2023
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Yan, R. (author), Xie, Hui (author), Yang, Fei (author), Veljkovic, M. (author), Zhao, Xiao lin (author)This paper reports an investigation on the tensile resistance of fully-penetrated butt-welded connections of (ultra-)high-strength steels considering the strength softening of the heat-affected zone (HAZ) and the strengthening due to the transverse constraint. Firstly, a parametric study is carried out to analyse the tensile behaviour of...journal article 2023
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Schultheis, M. (author), Zhao, H. (author), Zwitter, T. (author), Hladczuk, N.A. (author), Guerra, R. (author), Lammers, U. L. (author), Bakker, J. (author), Teodoro, P. de (author), García-Lario, P. (author)Context. The motion of stars has been used to reveal details of the complex history of the Milky Way, in constant interaction with its environment. Nevertheless, to reconstruct the Galactic history puzzle in its entirety, the chemo-physical characterisation of stars is essential. Previous Gaia data releases were supported by a smaller,...journal article 2023
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Chen, Yangkun (author), Yu, Chenghui (author), Zhu, Hengman (author), Liu, Shuai (author), Zhang, Yibing (author), Suarez, Joseph (author), Zhao, Liang (author), He, J. (author), Chen, Jiaxin (author)We present the results of the second Neural MMO challenge, hosted at IJCAI 2022, which received 1600+ submissions. This competition targets robustness and generalization in multi-agent systems: participants train teams of agents to complete a multi-task objective against opponents not seen during training. We summarize the competition design...journal article 2023
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Huang, J. (author), Zhao, Z. (author), Chen, Lydia Y. (author), Roos, S. (author)Attacks on Federated Learning (FL) can severely reduce the quality of the generated models and limit the usefulness of this emerging learning paradigm that enables on-premise decentralized learning. However, existing untargeted attacks are not practical for many scenarios as they assume that i) the attacker knows every update of benign...conference paper 2023
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Zhao, Lingqin (author), Zhang, Dongming (author), Hu, Yanjun (author), Guo, Qianqian (author), Jiao, Long (author), Zhou, Nan (author), Di Maio, F. (author)The bottom ash is increasingly used as a substitute aggregate material in road construction in China, and road salting is the major salt source in groundwater. Continuous rainfall releases soluble salts from the bottom ash subgrade into the surrounding soil and groundwater, resulting in potential hazards. Different methods were employed to...journal article 2023