Lei Qin
Biographic Data
| ID | 5681448 |
|---|---|
| NAME | Lei Qin |
| GIVEN NAMES | Lei |
| FAMILY NAME | Qin |
| SIGNATURE | QIN L |
| AFFILIATIONS | University of International Business and Economics |
| ORCID | 0000-0002-4612-0070 |
| VERIFIED | Yes |
| TOTAL WORKS | 10 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 10 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2016 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
The digital economy enhances overall life satisfaction but reduces equity among vulnerable groups
With the deepening of urban digitalization, existing research has focused on the growth effects of the digital economy, while paying less attention to its impact on residents' life satisfaction and equity, particularly among vulnerable groups. This study aims to address these gaps by integrating the dual perspectives of regional disparities and characteristics of vulnerable groups, and by examining the impact mechanisms of the digital economy on …
Doubly Robust Uniform Confidence Bands for Group-Time Conditional Average Treatment Effects in Difference-in-Differences
We consider a panel data analysis to examine the heterogeneity in treatment effects with respect to groups, periods, and a pre-treatment covariate of interest in the staggered difference-in-differences setting of Callaway and Sant’Anna (2021). Under standard identification conditions, a doubly robust estimand conditional on the covariate identifies the group-time conditional average treatment effect given the covariate. Focusing on the case of a …
Frequent use of online medical records
The advent of electronic storage of medical records and the internet has led to an increase in the use of online medical records, thereby enhancing doctor–patient communication and facilitating medical treatment. Based on demographic and personal behavioral characteristics from the National Cancer Institute’s 2019–2020 National Trends in Health Information Survey data, this study explored the characteristics and factors influencing the frequent u…
The impact of social activity on cardiovascular disease risk among middle-aged and older adults in China
Objective: This study aims to examine the relationship between social activity and the risk of cardiovascular disease (CVD) in middle-aged and older adults in China. Methods: We used data from the China Health and Retirement Longitudinal Study (CHARLS) collected between 2011 and 2020. The study followed 4,099 participants aged 45 and older, all free from cardiovascular disease at baseline (2011), over a 9-year period. CVD status was self-reported…
Bayesian Dynamic Matrix Factor Models
The growth in data volume and the expansion in data dimensionality are challenging the analysis of high-dimensional matrix time series. Factor models for matrix-valued high-dimensional time series are a powerful tool for reducing the dimensionality of the variables with low-rank structures. However, existing high-dimensional matrix factor models are nearly all static and struggle to capture the dynamics and time evolution of data. In this paper, …
Comparison of multiplex PCR capillary electrophoresis assay and PCR-reverse dot blot assay for human papillomavirus DNA genotyping detection in cervical cancer tissue specimens
Background The study aimed to evaluate the positivity rates and genotype distribution of the multiplex PCR capillary electrophoresis (MPCE) and PCR-Reverse Dot Blot (PCR-RDB) assays for human papillomavirus (HPV) detection in cervical cancer tissue specimens, and to explore their detection principles and applications in large-scale population screening. Methods The MPCE and PCR-RDB assays were performed separately on 425 diagnosed cervical cancer…
Spatiotemporal Analytics of Environmental Sounds and Influencing Factors Based on Urban Sensor Network Data
Urban construction has accelerated the deterioration of the urban sound environment, which has constrained urban development and harmed people’s health. This study aims to explore the spatiotemporal patterns of environmental sound and determine the influencing factors on the spatial differentiation of sound, thus supporting sustainable urban planning and decision-making. Fine-grained sound data are used in most urban sound-related research, but s…
Prediction of Number of Cases of 2019 Novel Coronavirus (Covid-19) Using Social Media Search Index
Predicting the number of new suspected or confirmed cases of novel coronavirus disease 2019 (COVID-19) is crucial in the prevention and control of the COVID-19 outbreak. Social media search indexes (SMSI) for dry cough, fever, chest distress, coronavirus, and pneumonia were collected from 31 December 2019 to 9 February 2020. The new suspected cases of COVID-19 data were collected from 20 January 2020 to 9 February 2020. We used the lagged series …
From “Propaganda” to “Guided Communication”. Animating Political Communication in Digital China
This essay investigates the recent boom in the use of animated cartoons for political communication in China which began in late 2013. A series of political cartoons are examined against the background of a comprehensive media revolution designed by top-following the Chinese Communist Party’s (hereafter CCP) new understanding of the role of media and public opinion. I argue, by looking closely at the creative use of political cartoons, that the C…
Catalpol stimulates Vegf production via the JAK2/STAT3 pathway to improve angiogenesis in rats’ stroke model
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Catalpol stimulates Vegf production via the JAK2/STAT3 pathway to improve angiogenesis in rats’ stroke model
From “Propaganda” to “Guided Communication”. Animating Political Communication in Digital China
This essay investigates the recent boom in the use of animated cartoons for political communication in China which began in late 2013. A series of political cartoons are examined against the background of a comprehensive media revolution designed by top-following the Chinese Communist Party’s (hereafter CCP) new understanding of the role of media and public opinion. I argue, by looking closely at the creative use of political cartoons, that the C…
Prediction of Number of Cases of 2019 Novel Coronavirus (Covid-19) Using Social Media Search Index
Predicting the number of new suspected or confirmed cases of novel coronavirus disease 2019 (COVID-19) is crucial in the prevention and control of the COVID-19 outbreak. Social media search indexes (SMSI) for dry cough, fever, chest distress, coronavirus, and pneumonia were collected from 31 December 2019 to 9 February 2020. The new suspected cases of COVID-19 data were collected from 20 January 2020 to 9 February 2020. We used the lagged series …
Spatiotemporal Analytics of Environmental Sounds and Influencing Factors Based on Urban Sensor Network Data
Urban construction has accelerated the deterioration of the urban sound environment, which has constrained urban development and harmed people’s health. This study aims to explore the spatiotemporal patterns of environmental sound and determine the influencing factors on the spatial differentiation of sound, thus supporting sustainable urban planning and decision-making. Fine-grained sound data are used in most urban sound-related research, but s…
Comparison of multiplex PCR capillary electrophoresis assay and PCR-reverse dot blot assay for human papillomavirus DNA genotyping detection in cervical cancer tissue specimens
Background The study aimed to evaluate the positivity rates and genotype distribution of the multiplex PCR capillary electrophoresis (MPCE) and PCR-Reverse Dot Blot (PCR-RDB) assays for human papillomavirus (HPV) detection in cervical cancer tissue specimens, and to explore their detection principles and applications in large-scale population screening. Methods The MPCE and PCR-RDB assays were performed separately on 425 diagnosed cervical cancer…
Frequent use of online medical records
The advent of electronic storage of medical records and the internet has led to an increase in the use of online medical records, thereby enhancing doctor–patient communication and facilitating medical treatment. Based on demographic and personal behavioral characteristics from the National Cancer Institute’s 2019–2020 National Trends in Health Information Survey data, this study explored the characteristics and factors influencing the frequent u…
The impact of social activity on cardiovascular disease risk among middle-aged and older adults in China
Objective: This study aims to examine the relationship between social activity and the risk of cardiovascular disease (CVD) in middle-aged and older adults in China. Methods: We used data from the China Health and Retirement Longitudinal Study (CHARLS) collected between 2011 and 2020. The study followed 4,099 participants aged 45 and older, all free from cardiovascular disease at baseline (2011), over a 9-year period. CVD status was self-reported…
Bayesian Dynamic Matrix Factor Models
The growth in data volume and the expansion in data dimensionality are challenging the analysis of high-dimensional matrix time series. Factor models for matrix-valued high-dimensional time series are a powerful tool for reducing the dimensionality of the variables with low-rank structures. However, existing high-dimensional matrix factor models are nearly all static and struggle to capture the dynamics and time evolution of data. In this paper, …
The digital economy enhances overall life satisfaction but reduces equity among vulnerable groups
With the deepening of urban digitalization, existing research has focused on the growth effects of the digital economy, while paying less attention to its impact on residents' life satisfaction and equity, particularly among vulnerable groups. This study aims to address these gaps by integrating the dual perspectives of regional disparities and characteristics of vulnerable groups, and by examining the impact mechanisms of the digital economy on …
Doubly Robust Uniform Confidence Bands for Group-Time Conditional Average Treatment Effects in Difference-in-Differences
We consider a panel data analysis to examine the heterogeneity in treatment effects with respect to groups, periods, and a pre-treatment covariate of interest in the staggered difference-in-differences setting of Callaway and Sant’Anna (2021). Under standard identification conditions, a doubly robust estimand conditional on the covariate identifies the group-time conditional average treatment effect given the covariate. Focusing on the case of a …
Medicine (5 works) · Computer Science (4 works) · China (3 works) · Internal Medicine (3 works) · Engineering (2 works) · Geography (2 works) · Mathematics (2 works) · Pathology (2 works) · Population (2 works) · Statistical Methods and Inference (2 works)