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The causes of flow regime shifts in the semi-arid Hailiutu River, Northwest China

Yang, Z. (author), Zhou, Y. (author), Wenninger, J. (author), Uhlenbrook, S. (author)

Identifying the causes (climate vs. human Identifying the causes (climate vs. human activities) for hydrological variability is a major challenge in hydrology. This paper examines the flow regime shifts, changes in the climatic variables such as precipitation, evaporation, temperature, and crop area in the semi-arid Hailiutu catchment in the...

journal article 2012

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Groundwater–surface water interactions, vegetation dependencies and implications for water resources management in the semi-arid Hailiutu River catchment, China – a synthesis

Zhou, Y. (author), Wenninger, J. (author), Yang, Z. (author), Yin, L. (author), Huang, J. (author), Hou, L. (author), Wang, X. (author), Zhang, D. (author), Uhlenbrook, S. (author)

During the last decades, large-scale land use changes took place in the Hailiutu River catchment, a semi-arid area in northwest China. These changes had significant impacts on the water resources in the area. Insights into groundwater and surface water interactions and vegetation-water dependencies help to understand these impacts and formulate...

journal article 2013

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Simulation of Groundwater-Surface Water Interactions under Different Land Use Scenarios in the Bulang Catchment, Northwest China

Yang, Z. (author), Zhou, Y. (author), Wenninger, J. (author), Uhlenbrook, S. (author), Wan, L. (author)

Groundwater is the most important resource for local society and the ecosystem in the semi-arid Hailiutu River catchment. The catchment water balance was analyzed by considering vegetation types with the Normalized Difference Vegetation Index (NDVI), determining evapotranspiration rates by combining sap flow measurements and NDVI values,...

journal article 2015

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Propeller and inflow vortex interaction: vortex response and impact on the propeller performance

Yang, Y. (author), Zhou, T (author), Sciacchitano, A. (author), Veldhuis, L.L.M. (author), Eitelberg, G. (author)

The aerodynamic operating conditions of a propeller can include complex situations where vorticity from sources upstream can enter the propeller plane. In general, when the vorticity enters in a concentrated form of a vortex, the interaction between the vortex and blade is referred to as blade–vortex interaction or BVI. The interaction may...

journal article 2016

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Chemoenzymatic epoxidation of alkenes with Candida antarctica lipase B and hydrogen peroxide in deep eutectic solvents

Zhou, Pengfei (author), Wang, Xuping (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yonghua (author)

Epoxides are important synthetic intermediates for the synthesis of a broad range of industrial products. This study presents a promising solution to the current limitation of enzyme instability. By using simple deep eutectic solvents such as choline chloride/sorbitol, significant stabilization of the biocatalyst has been achieved leading to...

journal article 2017

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Engineering a lipase B from Candida antactica with efficient perhydrolysis performance by eliminating its hydrolase activity

Wang, Xu Ping (author), Zhou, Peng Fei (author), Li, Zhi Gang (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yong Hua (author)

A Ser105Ala mutant of the lipase B from Candida antarctica enables 'perhydrolase-only' reactions. At the example of the chemoenzymatic Baeyer-Villiger oxidation of cyclohexanone, we demonstrate that with this mutant selective oxidation can be achieved in deep eutectic solvent while essentially eliminating the undesired hydrolysis reaction of...

journal article 2017

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Deep Eutectic Solvents Enable More Robust Chemoenzymatic Epoxidation Reactions

Zhou, Pengfei (author), Wang, Xuping (author), Zeng, Chaoxi (author), Wang, Weifei (author), Yang, Bo (author), Hollmann, F. (author), Wang, Yonghua (author)

A chemoenzymatic method for the production of epoxidized vegetable oils was developed. The unique combination of the commercial lipase G from Penicillieum camembertii with certain deep eutectic solvents enabled the efficient production of epoxidized vegetable oils.

journal article 2017

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The complexities of urban flood response: Flood frequency analyses for the Charlotte metropolitan region

Zhou, Zhengzheng (author), Smith, James A. (author), Yang, Long (author), Baeck, Mary Lynn (author), Chaney, Molly (author), ten Veldhuis, Marie-claire (author), Deng, Huiping (author), Liu, Shuguang (author)

We examine urban flood response through data-driven analyses for a diverse sample of “small” watersheds (basin scale ranging from 7.0 to 111.1 km²) in the Charlotte Metropolitan region. These watersheds have experienced extensive urbanization and suburban development since the 1960s. The objective of this study is to develop a...

journal article 2017

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Video Captioning by Adversarial LSTM

Yang, Yang (author), Zhou, Jie (author), Ai, Jiangbo (author), Bin, Yi (author), Hanjalic, A. (author), Shen, Heng Tao (author)

In this paper, we propose a novel approach to video captioning based on adversarial learning and long short-term memory (LSTM). With this solution concept, we aim at compensating for the deficiencies of LSTM-based video captioning methods that generally show potential to effectively handle temporal nature of video data when generating...

journal article 2018

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The role of storm scale, position and movement in controlling urban flood response

ten Veldhuis, Marie-claire (author), Zhou, Zhengzheng (author), Yang, Long (author), Liu, Shuguang (author), Smith, James (author)

The impact of spatial and temporal variability of rainfall on hydrological response remains poorly understood, in particular in urban catchments due to their strong variability in land use, a high degree of imperviousness and the presence of stormwater infrastructure. In this study, we analyze the effect of storm scale, position and movement...

journal article 2018

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Denoising controlled-source electromagnetic data using least-squares inversion

Yang, Yang (author), Li, Diquan (author), Tong, Tiegang (author), Zhang, D. (author), Zhou, Yatong (author), Chen, Yangkang (author)

Strong noise is one of the toughest problems in the controlled-source electromagnetic (CSEM) method, which highly affects the quality of recorded data. The three main types of noise existing in CSEM data are periodic noise, Gaussian white noise, and nonperiodic noise, among which the nonperiodic noise is thought to be the most difficult to...

journal article 2018

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Fully convolutional networks for street furniture identification in panorama images

Ao, Y. (author), Wang, J. (author), Zhou, M. (author), Lindenbergh, R.C. (author), Yang, M. Y. (author)

Panoramic images are widely used in many scenes, especially in virtual reality and street view capture. However, they are new for street furniture identification which is usually based on mobile laser scanning point cloud data or conventional 2D images. This study proposes to perform semantic segmentation on panoramic images and transformed...

journal article 2019

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Simulation framework for activity recognition and benchmarking in different radar geometries

Zhou, Boyu (author), Lin, Yier (author), Le Kernec, Julien (author), Yang, Shufan (author), Fioranelli, F. (author), Romain, Olivier (author), Zhao, Zhiqin (author)

Radar micro-Doppler signatures have been proposed for human monitoring and activity classification for surveillance and outdoor security, as well as for ambient assisted living in healthcare-related applications. A known issue is the performance reduction when the target is moving tangentially to the line of sight of the radar. Multiple...

journal article 2021

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A computationally efficient thermo-mechanical model for wire arc additive manufacturing

Yang, Y. (author), Zhou, Xin (author), Li, Quan (author), Ayas, C. (author)

Residual stresses and distortions are major obstacles against the more widespread application of wire arc additive manufacturing. Since the steep temperature gradients due to a moving localised heat source are inevitable in this process, accurate prediction of the thermally induced residual stresses and distortions is of paramount importance....

journal article 2021

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Identify dominant dimensions of 3D hand shapes using statistical shape model and deep neural network

Yang, Y. (author), Zhou, H. (author), Song, Y. (author), Vink, P. (author)

Hand anthropometry is one of the fundamentals of ergonomic research and product design. Many studies have been conducted to analyze the hand dimensions among different populations, however, the definitions and the numbers of those dimensions were usually selected based on the experience of the researchers and the available equipment. Few...

journal article 2021

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Platform Development of BIM-Based Fire Safety Management System Considering the Construction Site

Yang, Yapin (author), Sun, Ying (author), Chen, Mingsi (author), Zhou, Yuekuan (author), Wang, Ran (author), Liu, Zhengxuan (author)

Fire at a construction site usually results in serious accidents. Therefore, fire management at the construction site is critical to decreasing possible accidents. However, conventional fire safety management can be problematic in many aspects, such as visualization, multi-stage alarm systems, and dynamic escape route optimization. To solve...

journal article 2022

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Using Eye-Tracking Data to Predict Situation Awareness in Real Time During Takeover Transitions in Conditionally Automated Driving

Zhou, Feng (author), Yang, X. Jessie (author), de Winter, J.C.F. (author)

Situation awareness (SA) is critical to improving takeover performance during the transition period from automated driving to manual driving. Although many studies measured SA during or after the driving task, few studies have attempted to predict SA in real time in automated driving. In this work, we propose to predict SA during the takeover...

journal article 2022

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Examining industrial air pollution embodied in trade: implications of a hypothetical China-UK FTA

Zhang, Yuquan W. (author), Geng, Yong (author), Zhang, Bin (author), Yang, Shaohua (author), Izikowitz, David V. (author), Yin, Haitao (author), Wu, F. (author), Yu, Haishan (author), Liu, Huiwen (author), Zhou, Weiduo (author)

Very few developed economies have a full free trade agreement (FTA) with China. This study employs one GTAP model and builds an extended environmental multi-region input–output model to investigate a hypothetical China-UK FTA, concerning embodied industrial emissions of SO2, PM2.5, NOX, and NH3. The economic sectors are also classified based on...

journal article 2022

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Recycling waste tyre polymer for production of fibre reinforced cemented tailings backfill in green mining

Guo, Z. (author), Qiu, Jingping (author), Kirichek, Alex (author), Zhou, Hao (author), Liu, C. (author), Yang, Lei (author)

The increasing amount of solid waste, e.g., waste tyres from car industry and tailings from mine operations, causes substantial environmental and societal issues. The recycled tyre polymer fibre (RTPF) reinforced cemented tailings backfill (CTB) is a kind of composite that can treat waste tyres and tailings simultaneously and realize green...

journal article 2023

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Road performance evaluation of prestressed high-strength concrete pile waste powder as alternative filler in asphalt concrete

Tu, Botao (author), Yang, Xinkui (author), Xu, S. (author), Zhao, Zenggang (author), Zhou, Yuheng (author), Jiang, Jian (author), Fan, Lulu (author), Tu, Liangliang (author)

As a kind of solid waste, using Prestressed High-Strength Concrete Pile Waste Concrete (PPWC) as the replacement for limestone filler in asphalt concrete can not only reduce the accumulation of PPWC and increase its utilization but also avoid the increased road construction costs and environmental degradation associated with limestone mining....

journal article 2023