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Ventilation and thermal conditions in secondary schools in the Netherlands: Effects of COVID-19 pandemic control and prevention measures

Ding, Er (author), Zhang, D. (author), Hamida, A.B. (author), Garcia Sanchez, C. (author), Jonker, Lotte (author), de Boer, Annemarijn R. (author), Bruijning, Patricia C.J.L. (author), Linde, Kimberly J. (author), Wouters, Inge M. (author), Bluyssen, P.M. (author)

During the COVID-19 pandemic, the importance of ventilation was widely stressed and new protocols of ventilation were implemented in school buildings worldwide. In the Netherlands, schools were recommended to keep the windows and doors open, and after a national lockdown more stringent measures such as reduction of occupancy were introduced. In...

journal article 2023

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Effects of COVID-19 measures on ventilation in secondary schools in the Netherlands

Ding, Er (author), Zhang, D. (author), Garcia Sanchez, C. (author), Bluyssen, P.M. (author)

During the COVID-19 pandemic, the importance of ventilation for ensuring occupants’ health was widely stressed, especially for densely occupied places such as schools (Ding et al, 2022). Correspondingly, new protocols of ventilation were implemented in school buildings among many countries and regions. In the Netherlands, school classrooms were...

abstract 2023

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Tailoring high-energy storage NaNbO₃-based materials from antiferroelectric to relaxor states

Zhang, Mao Hua (author), Ding, Hui (author), Egert, Sonja (author), Zhao, Changhao (author), Villa, Lorenzo (author), Fulanović, Lovro (author), Braga Groszewicz, P. (author), Buntkowsky, Gerd (author), Kleebe, Hans Joachim (author)

Reversible field-induced phase transitions define antiferroelectric perovskite oxides and lay the foundation for high-energy storage density materials, required for future green technologies. However, promising new antiferroelectrics are hampered by transition´s irreversibility and low electrical resistivity. Here, we demonstrate an approach...

journal article 2023

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SARS‑CoV‑2 incidence in secondary schools: the role of national and school‑initiated COVID‑19 measures

Jonker, Lotte (author), Linde, Kimberly J. (author), de Boer, Annemarijn R. (author), Ding, Er (author), Zhang, D. (author), de Hoog, M.L.A. (author), Herfst, Sander (author), Heederik, Dick (author), Bluyssen, P.M. (author)

Introduction: Our aim was to gain insight into the effect of COVID-19 measures on SARS-CoV-2 incidence in secondary schools and the association with classroom CO ₂ concentration and airborne contamination. Methods: Between October 2020—June 2021, 18 schools weekly reported SARS-CoV-2 incidence and completed surveys on school...

journal article 2023

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Sparsity-based Human Activity Recognition with PointNet using a Portable FMCW Radar

Ding, Chuanwei (author), Zhang, Li (author), Chen, Haoyu (author), Hong, Hong (author), Zhu, Xiaohua (author), Fioranelli, F. (author)

Radar-based solutions have attracted great attention in human activity recognition (HAR) for their advantages in accuracy, robustness, and privacy protection. The conventional approaches transform radar signals into feature maps and then directly process them as visual images. While effective, these image-based methods may not be the best...

journal article 2023

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Guidance to assess ventilation performance of a classroom based on CO2 monitoring

Zhang, D. (author), Ding, Er (author), Bluyssen, P.M. (author)

Since the COVID-19 pandemic, the ventilation of school buildings has attracted considerable attention from the general public and researchers. However, guidance to assess the ventilation performance in classrooms, especially during a pandemic, is still lacking. Therefore, aiming to fill this gap, this study conducted a full-scale laboratory...

journal article 2022

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CO2 monitoring to assess ventilation rate: practical suggestions from a laboratory study

Zhang, D. (author), Ding, Er (author), Bluyssen, P.M. (author)

Several recent studies have demonstrated that ventilation plays an important role in the transmission of SARS-CoV-2 (the coronavirus that causes COVID-19) in public buildings, such as schools. However, there are no clear rules on how to assess the ventilation performance in classrooms, especially during a pandemic. Therefore, the main objective...

conference paper 2022

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Ventilation regimes of school classrooms against airborne transmission of infectious respiratory droplets: A review

Ding, Er (author), Zhang, D. (author), Bluyssen, P.M. (author)

Airborne transmission of small respiratory droplets (i.e., aerosols) is one of the dominant transmission routes of pathogens of several contagious respiratory diseases, which mainly takes place between occupants when sharing indoor spaces. The important role of ventilation in airborne infection control has been extensively discussed in...

review 2022

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Built environment and travel behavior in rural areas: A scientometric literature review

Ao, Yibin (author), Li, Mingyang (author), Ding, Xuan (author), Zheng, Junjie (author), Xiao, Shan (author), Deng, Shulin (author), Zhang, Zijun (author), Wang, Yan (author), Wang, T. (author), Martek, Igor (author)

With the rise of global urbanization, the rural built environment has undergone tremendous changes. As such, the rural built environment impacts on residents’ daily travel behavior is getting more researchers’ attention. To date, most of the research focuses on urban areas in developed countries. To understand the state-of-the-art of interplay...

review 2022

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Under Pandemic: Assessment of Ventilation in Secondary Schools in The Netherlands

Ding, Er (author), Zhang, D. (author), Bluyssen, P.M. (author)

To investigate the sufficiency of ventilation during the COVID-19 pandemic for school children, a field study was conducted in 37 classrooms of 11 Dutch secondary schools between October 2020 and June 2021. All the classrooms were visited twice, before and after a three-month national lockdown, when different measures against COVID-19 were taken...

conference paper 2022

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Manipulate energy transport via fluorinated spacers towards record-efficiency 2D Dion-Jacobson CsPbI₃ solar cells

Lei, Yutian (author), Li, Zhen-Hua (author), Wang, H. (author), Wang, Qian (author), Peng, Guoqiang (author), Xu, Youkui (author), Zhang, Haihua (author), Wang, Gang (author), Ding, Liming (author), Jin, Zhiwen (author)

Two-dimensional (2D) Dion-Jacobson (D-J)-type cesium lead iodide CsPbI ₃ perform remarkably in terms of stability. However, the complex interactions between spacer and inorganic layers limit its excellent progress in perovskite solar cells (PSCs). Herein, starting from the considerable structural diversity of organic spacers, we...

journal article 2022

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Safety-oriented planning of expressway truck service areas based on driver demand

Ding, Wenlong (author), Wang, Y. (author), Chu, Pengzi (author), Chen, Feng (author), Song, Yongchao (author), Zhang, Ning (author), Lin, Dong (author)

The rapid development of the economy has promoted the growth of freight transportation. The truck service areas on expressways, as the main places for truck drivers to rest, play an important role in ensuring the driving safety of trucks. If these service areas are constructed densely or provide a plentiful supply of parking areas, they are...

journal article 2022

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Ventilation strategies of school classrooms against cross-infection of COVID-19: A review

Ding, Er (author), Zhang, D. (author), Bluyssen, P.M. (author)

Under current pandemic of COVID-19, children are still spending long hours in school classrooms every day. A literature study is therefore conducted to investigate the current ventilation strategies used in schools and assess their performance of controlling contagious respiratory diseases in the indoor environment, and also to seek for future...

conference paper 2021

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Three‐ and four‐dimensional topographic measurement and validation

Rocca, Fabio (author), Li, Deren (author), Tebaldini, Stefano (author), Liao, Mingsheng (author), Zhang, Lu (author), Lombardini, Fabrizio (author), Balz, Timo (author), Haala, Norbert (author), Ding, Xiaoli (author), Hanssen, R.F. (author)

This paper reports on the activities carried out in the context of “Dragon project 32278: Three‐ and Four‐Dimensional Topographic Measurement and Validation”. The research work was split into three subprojects and encompassed several activities to deliver accurate characterization of targets on land surfaces and deepen the current knowledge...

journal article 2021

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Fixation effects of different types of cannulated screws on vertical femoral neck fracture: A finite element analysis and experimental study

Zhan, Shi (author), Jiang, Dajun (author), Ling, Ming (author), Ding, Jian (author), Yang, Kai (author), Duan, Lei (author), Tsai, Tsung Yuan (author), Feng, Yong (author), van Trigt, B. (author), Jia, Weitao (author), Zhang, Changqing (author), Hu, Hai (author)

Femoral neck fractures (FNFs) in young patients usually result from high-energy violence, and the vertical transcervical type is typically challenging for its instability. FNFs are commonly treated with three cannulated screws (CS), but the role of screws type on fixation effects (FE) is unclear. The purpose of this study was to evaluate the...

journal article 2021

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New innovations in pavement materials and engineering: A review on pavement engineering research 2021

Chen, Jiaqi (author), Dan, Hancheng (author), Ding, Yongjie (author), Gao, Y. (author), Guo, Meng (author), Guo, Shuaicheng (author), Han, Bingye (author), Hong, Bin (author), Hou, Yue (author), Hu, Chichun (author), Hu, Jing (author), Huyan, Ju (author), Jiang, Jiwang (author), Jiang, Wei (author), Li, Cheng (author), Liu, Pengfei (author), Liu, Yu (author), Liu, Zhuangzhuang (author), Lu, Guoyang (author), Ouyang, Jian (author), Qu, Xin (author), Ren, Dongya (author), Wang, Chao (author), Wang, Chaohui (author), Wang, Dawei (author), Wang, Di (author), Wang, Hainian (author), Wang, Haopeng (author), Xiao, Yue (author), Xing, Chao (author), Xu, Huining (author), Yan, Yu (author), Yang, Xu (author), You, Lingyun (author), You, Zhanping (author), Yu, Bin (author), Yu, Huayang (author), Yu, Huanan (author), Zhang, Henglong (author), Zhang, Jizhe (author), Zhou, Changhong (author), Zhou, Changjun (author), Zhu, Xingyi (author)

Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges. In the past 10 years, the pavement infrastructure strongly supports the rapid development of the global social economy. New theories, new methods, new technologies and new materials related to pavement engineering are emerging....

review 2021

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The Mechanical Properties and Elastic Anisotropy of η’-Cu6Sn5 and Cu3Sn Intermetallic Compounds

Ding, Chao (author), Wang, Jian (author), Liu, Tianhan (author), Qin, Hongbo (author), Yang, Daoguo (author), Zhang, Kouchi (author)

Full intermetallic compound (IMC) solder joints present fascinating advantages in high-temperature applications. In this study, the mechanical properties and elastic anisotropy of η’-Cu6Sn5 and Cu3Sn intermetallic compounds were investigated using first-principles calculations. The values of single-crystal elastic constants, the elastic (E),...

journal article 2021

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Fundamentals and application of solid-state phase transformations for advanced high strength steels containing metastable retained austenite

Dai, Zongbiao (author), Chen, Hao (author), Ding, Ran (author), Lu, Qi (author), Zhang, Chi (author), Yang, Zhigang (author), van der Zwaag, S. (author)

Over many decades, significant efforts have been made to improve the strength-elongation product of advanced high strength steels (AHSSs) by creating tailored multi-phase microstructures. Successive solid-state phase transformations for steels with a well selected chemical composition turned out to be the key instrument in the realisation of...

review 2021

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CEAP-360VR: A Continuous Physiological and Behavioral Emotion Annotation Dataset for 360 VR Videos

Xue, Tong (author), El Ali, Abdallah (author), Zhang, T. (author), Ding, Gangyi (author), Cesar, Pablo (author)

Watching 360 videos using Virtual Reality (VR) head-mounted displays (HMDs) provides interactive and immersive experiences, where videos can evoke different emotions. Existing emotion self-report techniques within VR however are either retrospective or interrupt the immersive experience. To address this, we introduce the Continuous...

journal article 2021

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Design of lead-free antiferroelectric (1 − X)NaNbO₃−xSrSnO₃ compositions guided by first-principles calculations

Koruza, Jurij (author), Zhang, Mao Hua (author), Hadaeghi, Niloofar (author), Egert, Sonja (author), Ding, Hui (author), Zhang, Hongbin (author), Braga Groszewicz, P. (author), Buntkowsky, Gerd (author), Klein, Andreas (author)

Antiferroelectric materials exhibit a unique electric-field-induced phase transition, which enables their use in energy storage, electrocaloric cooling, and nonvolatile memory applications. However, in many prototype antiferroelectrics this transition is irreversible, which prevents their implementation. In this work, we demonstrate a general...

journal article 2020