Yanwei Chai
Biographic Data
| ID | 3635555 |
|---|---|
| NAME | Yanwei Chai |
| GIVEN NAMES | Yanwei |
| FAMILY NAME | Chai |
| SIGNATURE | CHAI Y |
| AFFILIATIONS | Peking University |
| ORCID | 0000-0003-2513-3769 |
| VERIFIED | Yes |
| TOTAL WORKS | 60 |
| TOTAL CITATIONS | 512 |
| AUTHOR COUNT | 60 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2008 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 11 |
Understanding the Internal Structure of Daily Activity Space from Anchor Regions: Evidence from Long-Time-Series Mobile Signaling Data
Activity space represents the spatiotemporal interaction between individuals and their environment. While most studies measure potential activity space using short-term data, few have defined or measured its actual internal structure. This study introduces “anchor regions” as the core areas where daily activities are concentrated, and conceptualizes the structure of an individual’s activity space by incorporating the concept of regular locations,…
Relaxing or imposing constraints? Exploring the associations between digitalization and space-time flexibilities in Qinghe, Beijing
While information and communications technology (ICT)-based multitasking has become a routine feature of daily activity organization, its implications for space-time constraints remain insufficiently understood. This study develops ICT-based multitasking by distinguishing foreground and background ICT use and examines how different forms of ICT use are associated with perceived temporal and spatial flexibility at the activity and daily levels. Th…
Exploring the complex relationships between air pollution, life satisfaction and mental health through the lens of daily activity-travel patterns: The case of a suburban residential community in Beiji…
The association of air pollution with subjective wellbeing and mental health is a topic of growing discussion in the fields of environment science, public health, psychology and geography of health. However, short-term (activity/trip episode and momentary) to medium-term (day and week) air pollution exposure, however, has not been fully studied in relation to long-term (month and year) subjective wellbeing and mental health. Using an activity-tra…
The associations of real-time and perceived air pollution exposure with episode-level subjective wellbeing: A case study of a suburban community in Beijing
People's perception of air pollution bears a more pronounced relationship with their satisfaction with individual activities and trips compared to the objective measurements of ambient PM2.5 exposure. It also highlights that ambient PM2.5 exposure during the preceding activity episode has a time-lagged effect on satisfaction with the current trip episode
Understanding effects of daily activity on neighborhood belongingness: A Chinese perspective
Proximity-centred accessibility – A conceptual debate involving planning practitioners worldwide
In recent years, the concept of proximity has garnered increasing attention in both transportation research and practice, albeit under various terms and interpretations. Among these, the concept of the 15-minute city has catalysed attention in planning practice, with recent evolution to the x-minute city and city of proximities. In research, proximity-centred accessibility has been offered as an umbrella term to express the ability to reach activ…
Personalizing the dichotomy of fixed and flexible activities in everyday life: Deriving prism anchors from GPS-enabled survey data
Housing-related differences in sense of community in mixed housing neighborhood: Impacts of residents' daily activities and facility utilization
Understanding the Hybridization of Everyday Activities from a Time-Geographic Perspective
In contrast to the dichotomous distinction between offline and online activity in much previous research, we argue for hybridization as a key feature of the digitalized postpandemic society, shaping and constraining the everyday lives and activities of individuals in new, unforeseen ways. The current understanding of the complex ways in which hybridization plays out and reorders everyday life is limited, partly due to a lack of relevant conceptua…
From lockdown to precise prevention: Adjusting epidemic-related spatial regulations from the perspectives of the 15-minute city and spatiotemporal planning
Comparing Mobility-Based PM2.5 Concentrations and Activity Satisfaction in Beijing between 2012 and 2017
Although the negative effect of air pollution on life satisfaction has been examined in many studies, comparative analyses of mobility-based exposures to air pollution and momentary wellbeing have been rare to date, despite the fact that they are essential to improve wellbeing. Drawing on individuals' space-time trajectories of two surveys conducted in 2012 and 2017 in Beijing, we investigate the temporal variations in activity satisfaction and m…
Examining the association between the built environment and active travel using GPS data: A study of a large residential area (Daju) in Shanghai
Changes in Everyday Internet Use and Home Activity During and After Pandemic‐Related Lockdowns: A Case Study in Shuangjing Subdistrict, Beijing
The outbreak of the COVID‐19 pandemic affected the everyday lives of people. Recent studies have found that Internet use increased during lockdowns and helped people cope with spatial constraints on daily activity. However, long‐term implications on the digitalization of everyday life are still unknown. This study aims to improve the understanding of changes in Internet use during and after lockdown and how these changes relate to home activity a…
Diorama, Path and Project” to Understanding Everyday Life and Urban Space in Transitional Chinese Cities
”Diorama, path and project” by Torsten Hägerstrand is one of the most important contributions to the development of time geography. It introduced the diorama approach along the lines of “the live corporeality of humans and society”, and it still enduringly inspires the study of everyday life and urban space in a space–time integrative framework. This article revisits the classic article and reflects on certain key ideas, such as the “thereness” o…
Another Form of Neighborhood Effect Bias: The Neighborhood Effect Polarization Problem (Nepp)
The neighborhood effect averaging problem (NEAP) points out that the effect and statistical significance of mobility-dependent environmental exposure on health behaviors or outcomes by the residence-based approach might be overestimated compared with the exposure estimates considering daily mobility. NEAP studies, however, are recently only proven in pollution and congestion exposure. The neighborhood effect bias might have another form in other …
Gender disparities in exposure to green space: An empirical study of suburban Beijing
How Chinese hukou system shapes ethnic dissimilarity in daily activities: A study of Xining, China
Neighborhood effects on health: A multilevel analysis of neighborhood environment, physical activity and public health in suburban Shanghai
The impact of immediate urban environments on people’s momentary happiness
The research interest of urban researchers and geographers in the relationship between urban environments and happiness has been increasing. Previous studies have mostly focused on people’s long-term overall wellbeing. However, there is limited evidence that momentary happiness is associated with immediate urban environments. This study provides new evidence on this issue. 144 participants living in Guangzhou, China, were asked to repeatedly self…
Temporal and Spatial Constraints to Daily out-of-Home Leisure in Urban China: A GPS-Based Time Diary Survey
Interpersonal and Intrapersonal Variabilities in Daily Activity-Travel Patterns: A Networked Spatiotemporal Analysis
Interpersonal and intrapersonal variabilities are two important perspectives to understand daily travel behaviors, while only a small number of studies incorporate them for understanding human dynamics. This paper employed a network analysis approach to detecting daily activity-travel patterns of 680 Beijing’s residents within a week and then used a multilevel multinomial logit model to analyze the intrapersonal variability in patterns and the so…
Can daily mobility alleviate green inequality from living and working environments
The effects of activity-related contexts on individual sound exposures: A time–geographic approach to soundscape studies
Noise is an ever-growing problem in cities. Conventional noise mitigation approaches may not necessarily control noise pollution, since whether a sound is perceived as noise is largely influenced by its specific contexts. Based on an activity-centric framework, this study examines the effects of activity-related contexts and measured sound levels based on individuals’ sound evaluations as they undertake daily activities at different geographic lo…
Property rights redistribution and the spatial evolution of the Chinese danwei compound: A case study in Beijing
Do spatial factors outweigh institutional factors? Changes in influencing factors of home-work separation from 2007 to 2017 in Beijing
The jobs–housing relationship and commuting in Beijing, China: The legacy of Danwei
Activity Spaces and Sociospatial Segregation in Beijing
The widespread development of gated communities has generated much concern over urban fragmentation and social segregation. The social division and segregation between residents inside and outside urban enclaves exist not only in their residential spaces, but also in their values, social relations, and daily lives. In this study, it is argued that sociospatial segregation research should pay more attention to individuals' actual usage of urban sp…
Investigating commuting flexibility with GPS data and 3D geovisualization: A case study of Beijing, China
Built environment diversities and activity–travel behaviour variations in Beijing, China
Exploratory data analysis of activity diary data: A space–time GIS approach
Urban form breeds neighborhood vibrancy: A case study using a GPS-based activity survey in suburban Beijing
Reside nearby, behave apart? Activity-space-based segregation among residents of various types of housing in Beijing, China
The impact of urban form on CO2 emission from work and non-work trips: The case of Beijing, China
Space–time fixity and flexibility of daily activities and the built environment: A case study of different types of communities in Beijing suburbs
From socialist danwei to new danwei: A daily-life-based framework for sustainable development in urban China
The danwei (or work unit) compound was the basic spatial and social unit of urban China in the pre-reform period, and its transformation has been an important part of the larger transitions that have remade urban China during the reform era. This paper investigates spatial and social changes in urban China over three stages; namely, the formation of the socialist danwei system, the decline of the socialist danwei and the formation of a new kind o…
Understanding the relationships among individual-based momentary measured noise, perceived noise, and psychological stress: A geographic ecological momentary assessment (Gema) approach
Assessing Mobility-Based Real-Time Air Pollution Exposure in Space and Time Using Smart Sensors and GPS Trajectories in Beijing
Using real-time data from portable air pollutant sensors and smartphone Global Positioning System trajectories collected in Beijing, China, this study demonstrates how smart technologies and individual activity-travel microenvironments affect the assessment of individual-level pollution exposure in space and time at a very fine resolution. It compares three different types of individual-level exposure estimates generated by using residence-based …
Help whom and help what? Intergenerational co-residence and the gender differences in time use among dual-earner households in Beijing, China
An extensive literature has documented the conflict between employment and household responsibilities and its impacts on the gendered patterns of daily activities in dual-earner households. However, most studies have focused exclusively on the division of household labour in nuclear households, with insufficient attention paid to the impact of alternative household strategies such as co-residence with extended family members. This article investi…
Urban form, car ownership and activity space in inner suburbs: A comparison between Beijing (China) and Chicago (United States)
Accompanied by higher levels of car ownership, suburbanisation in Western countries has a significant impact on motorised travel and long-distance trips. Chinese cities share some of the suburbanisation trends and patterns of the United States as well as an increasing number of cars, while there are still great contextual variations. Through a comparative study of activity space in two inner suburban areas with different built environments, Beiji…
Mobility-based environmental justice: Understanding housing disparity in real-time exposure to air pollution and momentary psychological stress in Beijing, China
Daily life circle reconstruction: A scheme for sustainable development in urban China
Neighborhood effects on health: A multilevel analysis of neighborhood environment, physical activity and public health in suburban Shanghai
Gendered Space‐Time Constraints, Activity Participation and Household Structure: A Case Study Using A GPS‐Based Activity Survey in Suburban Beijing, China
Space‐time constraints imposed by employment and household responsibilities may lead to greater gender differences in individuals’ participation in daily activities. However, few studies have directly examined the impact of household structure on the gender differences in space‐time constraints associated with various daily activities due to the lack of accurate space‐time data. Using a 7‐day GPS‐based activity‐travel diary dataset collected in B…
Un-gated and integrated Work Unit communities in post-socialist urban China: A case study from Beijing
Space–Time Behavior Research in China: Recent Development and Future Prospect
The space–time behavior approach has become an influential methodology in Chinese urban geography. In this article I provide an overview of space–time behavior research in China, focusing on theoretical and methodological progress as well as key themes and findings from recent empirical studies. I argue that space–time behavior research offers a new perspective for understanding the complexity and diversity of human behavior patterns during the l…
Examining the impacts of ethnicity on space-time behavior: Evidence from the City of Xining, China
Neighbourhood-scale public spaces, inter-group attitudes and migrant integration in Beijing, China
Cities worldwide face the challenge of persistent social polarisation that is exacerbated by the mass migration of populations. Scholars have debated whether the planning of public spaces, which presumably fosters inter-group encounter, potentially reduces prejudice against minorities such as migrants, and eventually promotes social inclusiveness. This research uses a large-scale questionnaire survey conducted in 36 neighbourhoods (estates) in Be…
Neighborhood-scale urban form, travel behavior, and CO 2 emissions in Beijing: Implications for low-carbon urban planning
With an increasing awareness of global climate change, the effect of urban spatial organization, at both city and neighborhood scales, on urban CO2 emission reduction has attracted much scholarly and practical attention. Using Beijing as a case study, this article examines the extent to which neighborhood-scale urban form may contribute to reduction of travel-related CO2 emissions in the context of rapid urbanization and spatial transformation. W…
Reflections on the similarities and differences between Chinese and US cities
While China and the USA differ in many ways, suburbanization and rapid increase in car dependence in China seem to result in certain urban issues that are also found in US cities. For instance, recent urban development in China has departed significantly from the traditional high-density, pedestrian- and cyclist-oriented urban form that used to characterize Chinese cities. As the market economy unfolds in China, market forces seem to play a more …
Living with urban sounds: Understanding the effects of human mobilities on individual sound exposure and psychological health
The jobs–housing relationship and commuting in Beijing, China: The legacy of Danwei
Exploratory data analysis of activity diary data: A space–time GIS approach
Built environment diversities and activity–travel behaviour variations in Beijing, China
Activity Spaces and Sociospatial Segregation in Beijing
The widespread development of gated communities has generated much concern over urban fragmentation and social segregation. The social division and segregation between residents inside and outside urban enclaves exist not only in their residential spaces, but also in their values, social relations, and daily lives. In this study, it is argued that sociospatial segregation research should pay more attention to individuals' actual usage of urban sp…
Investigating commuting flexibility with GPS data and 3D geovisualization: A case study of Beijing, China
Space–Time Behavior Research in China: Recent Development and Future Prospect
The space–time behavior approach has become an influential methodology in Chinese urban geography. In this article I provide an overview of space–time behavior research in China, focusing on theoretical and methodological progress as well as key themes and findings from recent empirical studies. I argue that space–time behavior research offers a new perspective for understanding the complexity and diversity of human behavior patterns during the l…
From socialist danwei to new danwei: A daily-life-based framework for sustainable development in urban China
The danwei (or work unit) compound was the basic spatial and social unit of urban China in the pre-reform period, and its transformation has been an important part of the larger transitions that have remade urban China during the reform era. This paper investigates spatial and social changes in urban China over three stages; namely, the formation of the socialist danwei system, the decline of the socialist danwei and the formation of a new kind o…
Reflections on the similarities and differences between Chinese and US cities
While China and the USA differ in many ways, suburbanization and rapid increase in car dependence in China seem to result in certain urban issues that are also found in US cities. For instance, recent urban development in China has departed significantly from the traditional high-density, pedestrian- and cyclist-oriented urban form that used to characterize Chinese cities. As the market economy unfolds in China, market forces seem to play a more …
Un-gated and integrated Work Unit communities in post-socialist urban China: A case study from Beijing
Space–time fixity and flexibility of daily activities and the built environment: A case study of different types of communities in Beijing suburbs
The impact of urban form on CO2 emission from work and non-work trips: The case of Beijing, China
Daily life circle reconstruction: A scheme for sustainable development in urban China
Built environment, peak hours and route choice efficiency: An investigation of commuting efficiency using GPS data
Neighborhood-scale urban form, travel behavior, and CO 2 emissions in Beijing: Implications for low-carbon urban planning
With an increasing awareness of global climate change, the effect of urban spatial organization, at both city and neighborhood scales, on urban CO2 emission reduction has attracted much scholarly and practical attention. Using Beijing as a case study, this article examines the extent to which neighborhood-scale urban form may contribute to reduction of travel-related CO2 emissions in the context of rapid urbanization and spatial transformation. W…
Early birds, night owls, and tireless/recurring itinerants: An exploratory analysis of extreme transit behaviors in Beijing, China
Urban form, car ownership and activity space in inner suburbs: A comparison between Beijing (China) and Chicago (United States)
Accompanied by higher levels of car ownership, suburbanisation in Western countries has a significant impact on motorised travel and long-distance trips. Chinese cities share some of the suburbanisation trends and patterns of the United States as well as an increasing number of cars, while there are still great contextual variations. Through a comparative study of activity space in two inner suburban areas with different built environments, Beiji…
Between haven and heaven in cities: A comparison between Beijing (China) and Utrecht (the Netherlands)
Although heterogeneity exists, Western countries can generally be characterised by a more individualistic orientation, whereas China is a more collectivist-oriented society that is undergoing a transformation. This empirical study examined socio-cultural differences between cities in China and the Netherlands in terms of companionship and urban meeting places on the basis of activity diary surveys conducted in the metropolitan areas of Beijing an…
Gendered Space‐Time Constraints, Activity Participation and Household Structure: A Case Study Using A GPS‐Based Activity Survey in Suburban Beijing, China
Space‐time constraints imposed by employment and household responsibilities may lead to greater gender differences in individuals’ participation in daily activities. However, few studies have directly examined the impact of household structure on the gender differences in space‐time constraints associated with various daily activities due to the lack of accurate space‐time data. Using a 7‐day GPS‐based activity‐travel diary dataset collected in B…
Examining the impacts of ethnicity on space-time behavior: Evidence from the City of Xining, China
A Multilevel Analysis of Perceived Noise Pollution, Geographic Contexts and Mental Health in Beijing
With rapid urbanization and increase in car ownership, ambient noise pollution resulting from diversified sources (e.g., road traffic, railway, commercial services) has become a severe environmental problem in the populated areas in China. However, research on the spatial variation of noise pollution and its potential effects on urban residents' mental health has to date been quite scarce in developing countries like China. Using a health survey …
An Innovative Context-Based Crystal-Growth Activity Space Method for Environmental Exposure Assessment: A Study Using GIS and GPS Trajectory Data Collected in Chicago
Scholars in the fields of health geography, urban planning, and transportation studies have long attempted to understand the relationships among human movement, environmental context, and accessibility. One fundamental question for this research area is how to measure individual activity space, which is an indicator of where and how people have contact with their social and physical environments. Conventionally, standard deviational ellipses, roa…
Urban form breeds neighborhood vibrancy: A case study using a GPS-based activity survey in suburban Beijing
The Anatomy of Health-Supportive Neighborhoods: A Multilevel Analysis of Built Environment, Perceived Disorder, Social Interaction and Mental Health in Beijing
Mental health is an exceedingly prevalent concern for the urban population. Mounting evidence has confirmed the plausibility of high incidences of mental disorders in socioeconomically disadvantaged neighborhoods. However, the association between the neighborhood built environment and individual mental health is understudied and far from conclusive, especially in developing countries such as China. The underlying mechanism requires in-depth analy…
Social‐contextual exposure of ethnic groups in urban China: From residential place to activity space
Studies on ethnic segregation in recent decades have shifted the focus from the residential area towards people's activity locations, and policy focus requires more effort in identifying the most segregated individuals among ethnic minorities. Meanwhile, research on ethnic segregation in urban China from the activity‐based perspective remains to be examined. Thus, we analyse ethnic segregation beyond residential neighbourhoods in Chinese cities b…
Reside nearby, behave apart? Activity-space-based segregation among residents of various types of housing in Beijing, China
Geography (51 works) · China (41 works) · Urban Transport and Accessibility (41 works) · Beijing (37 works) · Computer Science (28 works) · Sociology (27 works) · Engineering (19 works) · Psychology (19 works) · Medicine (18 works) · Political science (17 works)