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Li, L. (author), Martinez, Jorge (author), Hendriks, R.C. (author)Estimation of the acoustic-scene related parameters such as relative transfer functions (RTFs) from source to microphones, source power spectral densities (PSDs) and PSDs of the late reverberation is essential and also challenging. Existing maximum likelihood estimators typically consider only subsets of these parameters and use each time frame...journal article 2023
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Wang, Lechen (author), Mao, Jianfeng (author), Li, L. (author), Li, Xuechun (author), Tu, Yilei (author)Predicting Estimated Time of Arrival (ETA) for a Multi-Airport System (MAS) is much more challenging than for a single airport system because of complex air route structure, dense air traffic volume and vagaries of traffic conditions in an MAS. In this work, we propose a novel “Bubble” mechanism to accurately predict medium-term ETA for a...journal article 2023
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Abunada, M.B.M. (author), Dhakal, Nirajan (author), Gulrez, Raffay (author), Li, L. (author), Abushaban, Almotasembellah (author), Smit, Herman (author), Moed, David (author), Ghaffour, Noreddine (author), Kennedy, M.D. (author)This study aims at applying and verifying the MFI-UF method to predict particulate fouling in RO plants. Two full-scale RO plants treating surface water, with average capacity of 800–2000 m<sup>3</sup>/h, were studied. Firstly, the MFI-UF of RO feed and concentrate was measured using 5–100 kDa membranes at same flux applied in the RO plants ...journal article 2023
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Chang, Haoliang (author), Li, L. (author), Huang, Jianxiang (author), Zhang, Qingpeng (author), Chin, Kwai Sang (author)Traffic congestion and accidents take a toll on commuters' daily experiences and society. Locating the venues prone to congestion and accidents and capturing their perception by public members is invaluable for transport policy-makers. However, few previous methods consider user perception toward the accidents and congestion in finding and...journal article 2022
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Wang, Xiao Lin (author), Zhong, Yuanguang (author), Li, L. (author), Xie, Wei (author), Ye, Zhi Sheng (author)Problem definition: Warranty reserves are funds used to fulfill future warranty obligations for a product. In this paper, we investigate the warranty reserve planning problem faced by a manufacturing firm who manages warranties for multiple products. Academic/practical relevance: It is nontrivial to determine a proper amount of reserves to...journal article 2022
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He, X. (author), Jiang, C. (author), Li, L. (author), Blom, H.A.P. (author)UAS-based commercial services such as urban parcel delivery are expected to grow in the upcoming years and may lead to a large volume of UAS operations in urban areas. These flights may pose safety risks to persons and property on the ground, which are referred to as third-party risks. Path-planning methods have been developed to generate a...journal article 2022
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He, Xinyu (author), He, Fang (author), Li, L. (author), Zhang, Lei (author), Xiao, Gang (author)High-tech giants and start-ups are investing in drone technologies to provide urban air delivery service, which is expected to solve the last-mile problem and mitigate road traffic congestion. However, air delivery service will not scale up without proper traffic management for drones in dense urban environment. Currently, a range of Concepts...journal article 2022
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Zhao, Xifan (author), Wang, Yanjun (author), Li, L. (author), Delahaye, Daniel (author)A multiple-airport system (MAS) consists of more than two airports in a metropolitan area under a large block of terminal airspace that is managed by one or two air traffic control units. When the capacity of an airport or of the terminal airspace drops, flight delays occur in the MAS system. A quick estimation and predication of traffic...journal article 2022
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He, Yuxin (author), Li, L. (author), Zhu, X. (author), Tsui, Kwok Leung (author)Short-term forecasting of passenger flow is critical for transit management and crowd regulation. Spatial dependencies, temporal dependencies, inter-station correlations driven by other latent factors, and exogenous factors bring challenges to the short-term forecasts of passenger flow of urban rail transit networks. An innovative deep...journal article 2022
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Zhang, Mengru (author), Han, Fei (author), Liu, Zhe (author), Han, Yufei (author), Li, L. (author), Zhou, Weizhi (author)The contradiction between theoretical metabolism of ammonium assimilation and experiential understanding of conventional biosystems makes the rational optimization of the ammonium-assimilating microbiome through carbon to nitrogen (C/N) ratios perplexing. The effect of different C/N ratios on ammonium-assimilating biosystems was investigated...journal article 2022
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Chang, Haoliang (author), Huang, Jianxiang (author), Yao, Weiran (author), Zhao, Weizun (author), Li, L. (author)Urban rail development can increase land value, reduce commute time, and increase accessibility, as reported in the literature. However, little is known about the impact of opening urban rail transit stations on people's sentiment, particularly in the context of large metropolises where population density is significantly high. This paper...journal article 2022
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Li, L. (author), Martinez, Jorge (author), Hendriks, R.C. (author)Many multi-microphone algorithms depend on knowing the relative acoustic transfer functions (RTFs) of the individual sound sources in the acoustic scene. However, accurate joint RTF estimation for multiple sources is a challenging problem. Existing methods to jointly estimate the RTF for multiple sources have either no satisfying performance, or...conference paper 2022
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Zhu, Xinting (author), Lin, Yu (author), He, Yuxin (author), Tsui, Kwok Leung (author), Chan, Pak Wai (author), Li, L. (author)With the dynamic air traffic demand and the constrained capacity resources, accurately predicting airport throughput is essential to ensure the efficiency and resilience of air traffic operations. Many research efforts have been made to predict traffic throughputs or flight delays at an airport or over a network. However, it is still a...journal article 2022
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Zhao, Weizun (author), Li, L. (author), Alam, Sameer (author), Wang, Yanjun (author)Safety is a top priority for civil aviation. Data mining in digital Flight Data Recorder (FDR) or Quick Access Recorder (QAR) data, commonly referred to as black box data on aircraft, has gained interest for proactive safety management. New anomaly detection methods, primarily clustering methods, have been developed to monitor pilot...journal article 2021
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Lin, Yu (author), Li, L. (author), Ren, Pan (author), Wang, Yanjun (author), Szeto, W. Y. (author)En-route congestion causes delays in air traffic networks and will become more prominent as air traffic demand will continue to increase yet airspace volume cannot grow. However, most existing studies on flight delay modeling do not consider en-route congestion explicitly. In this study, we propose a new flight delay model, Multi-layer Air...journal article 2021
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Li, L. (author), Voskov, D.V. (author)We present a multi-level discrete fracture model (MLDFM) to guarantee a robust and efficient solution for naturally fractured reservoir simulation. In MLDFM, we apply a triple continuum model using structured grid for forward simulation where large-scale fractures are represented with numerical embedded discrete fracture model (EDFM) and the...journal article 2021
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Li, L. (author), Rezaei, J. (author), Tavasszy, Lorant (author), Wiegmans, B. (author), Guo, Jingwei (author), Tang, Yinying (author), Peng, Qiyuan (author)China Railway Express (CRE) is one of the most important constituent parts of the Belt and Road Initiative. Freight demand analysis is fundamental as a basis for the operational strategy of CRE and the investment policy along the CRE-routes. Most of the existing relevant literature has focused on the organization of the train operations of...journal article 2020
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Li, L. (author), Wang, Xu (author), Rezaei, J. (author)Crowdsourcing delivery is becoming a prevalent tool for tackling delivery problems by building a large labor-intensive service network. In this network, the delivery personnel consist of a large number of people with a complex composition and high level of mobility, creating enormous challenges for the quality of service and the management of...journal article 2020
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Li, L. (author), Voskov, D.V. (author), Yao, Jun (author), Li, Yang (author)The potential of well test technology is discussed in this paper to estimate the miscible condition and displacement fronts position during CO<sub>2</sub> flooding. To interpret the multiphase well test curve of CO<sub>2</sub> flooding process, an accurate compositional numerical model is developed in this study. The model includes fully EoS...journal article 2018
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van der Vegt, H. (author), Storms, J.E.A. (author), Walstra, D.J.R. (author), Li, L. (author), Nordahl, Kjetil (author), Martinius, A.W. (author), Howes, N.C. (author)In deltaic deposits, the largest volumes of sandy deposits occur at the delta top (as channel accretion, overbank deposits) and as distinct or amalgamated sandy mouth bars in the upper delta front. We use process-based models to study the sediment distribution in four evolving deltas, each with a different input sediment profile. We show how the...abstract 2018