Different Cities In China Research Articles

Development and validation of a facile rapid assessment scale for perinatal venous thromboembolism in puerperium in Chinese women.

It is still urgent and challenge to develop a simple risk assessment scale for venous thromboembolism (VTE) in puerperium in Chinese women. The study, a retrospective case-control study, was conducted in 12 hospitals in different cities in China. A total of 1152 pregnant women were selected, including 384 cases with VTE and 768 cases without VTE. A logistic regression method was conducted to determine the risk factors of VTE. Age, BMI before delivery, gestational diabetes mellitus, family history (thrombosis, diabetes, cardiovascular disease), and assisted reproductive technology were independent risk factors (P<0.05). The difference between the high-risk group and the low-risk group was statistically significant(P<0.001) with a sensitivity of 0.578, specificity of 0.756, Yuden index o.334, and area under the ROC curve of 0.878. The age (≥ 35 years), BMI before delivery (≥ 30kg/m2), gestational diabetes mellitus, family history of related diseases and assisted reproductive technology are more likely to cause VTE after full-time delivery. The simple and rapid assessment scale of VTE in women after full-term delivery has perfect discrimination (P < 0.001), which can be applied to predict the risk of VTE in Chinese full-term postpartum women.

Determining the role of music attitude and its precursors in stimulating the psychological wellbeing of immigrants during COVID quarantine - a moderated mediation approach.

Based on social cognitive theory (SCT), the purpose of this study is to examine the role of music attitude and its essential precursors in stimulating the psychological wellbeing of immigrants in isolation (quarantine) during the COVID pandemic. This study employed quantitative methodology; an online survey was administered to collect sufficient data from 300 immigrants who traveled to China during the pandemic. Data were collected from five centralized quarantine centers situated in different cities in China. Additionally, the valid data set was analyzed using structural equation modeling (SEM) via AMOS 24 and SPSS 24. The results indicate that potential predictors such as cognitive - music experience (MEX), environmental - social media peer influence (SPI), and cultural factors such as native music (NM) have a direct, significant, and positive effect on music attitude (MA), which further influences immigrants' psychological wellbeing (PW) during their quarantine period. Moreover, in the presence of the mediator (MA), the mediating relationships between MEX and PW, and NM and PW, are positive, significant, and regarded as partial mediation. However, the moderated mediation effects of music type (MT) on MEX-MA-PW and NM-MA-PW were found to be statistically not significant and unsupported. This study contributes to the literature on the effectiveness of individuals' music attitude and its associated outcomes, focusing on mental health care in lonely situations such as quarantine during the COVID pandemic. More importantly, this study has raised awareness about music, music attitude, and their beneficial outcomes, such as mental calmness and peacefulness for the general public, particularly during social distancing, isolation, and quarantine in the COVID pandemic situation.

Dynamic Relationships among Composite Property Prices of Major Chinese Cities: Contemporaneous Causality through Vector Error Corrections and Directed Acyclic Graphs

The present study is the first one that investigates dynamic relations among composite real estate price indices of ten different cities in China during the years from 2005 to 2021. Utilizing the data recorded on a monthly basis, we apply VECM (vector error-correction modeling) and DAGs (directed acyclic graphs) in order to characterize contemporaneous causal relations among the ten real estate price indices. We use the PC algorithm to identify a pattern with non-directed edges and the LiNGAM algorithm to determine the causal ordering, based on which we calculate the results of innovation accounting. The LiNGAM algorithm adopted here effectively utilizes non-normality for facilitating the arrival of complete causal orderings. Our results show that price dynamics revealed through processes of price adjustments due to shocks to prices are rather sophisticated and such dynamics are, in general, dominated by price indices of Shanghai and Shenzhen, which are two top-tier cities among the four top-tier cities in China. This indicates that policy design on composite property prices should be focusing on price indices of Shanghai and Shenzhen.

Predicting lymphedema self-management behaviours in breast cancer patients: A structural equation model with the Integrated Theory of Health Behaviour Change.

To explore predictors of lymphedema self-management behaviours among Chinese breast cancer survivors based on the Integrated Theory of Health Behaviour Change, and to clarify the interrelationship among these variables. Further analysis of a multicentre cross-sectional and survey-based study. A total of 586 participants with breast cancer were recruited from December 2021 to April 2022 in different cities in China. We used self-reported questionnaires to collect data. Descriptive analysis, bivariate analysis and structural equation model were performed. The Integrated Theory of Health Behaviour Change is suitable for predicting lymphedema self-management behaviours. The final structural model showed good model fit. Social support, self-efficacy and lymphedema knowledge positively affected lymphedema self-management behaviours, directly and indirectly. Self-regulation acted as a crucial mediator between these variables and self-management. The direct path between social support and self-regulation was not significant. Lymphedema knowledge and social support also influenced self-management via illness perception, self-efficacy and self-regulation, sequentially. These variables explained 55.9% of the variance in lymphedema self-management behaviours. The modified model based on the Integrated Theory of Health Behaviour Change fitted well in predicting lymphedema self-management behaviours among breast cancer patients. Lymphedema knowledge, illness perception, self-efficacy, social support and self-regulation directly and indirectly influenced lymphedema self-management behaviours. This study provides a theoretical basis for the assessment and interventions of lymphedema self-management behaviours in breast cancer patients. Lymphedema self-management behaviours should be assessed regularly and comprehensively, taking these predictors into consideration to identify potential barriers. Further research is needed to explore effective interventions integrating these significant predictors. This study was reported following Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for cross-sectional studies. No patient or public contributed to the design or conduct of the study, analysis or interpretation of the data, or in the preparation of the manuscript. WHAT DOES THIS PAPER CONTRIBUTE TO THE WIDER GLOBAL CLINICAL COMMUNITY?: This study focused on identifying and predicting mechanism of self-management based on a theory of behaviour change. The results can be applied among patients with other chronic diseases or high-risk populations, and inspire the assessment and interventions facilitating self-management behaviours. This study was registered as an observational study at Chinese Clinical Trial Registry: http://www.chictr.org.cn (ChiCTR2200057084). For breast cancer patients with poor lymphedema self-management behaviour, attention should be raised among nurses and involved healthcare staffs that lymphedema self-management is multi-faced. Strategies targeted at improving social support, self-regulation, knowledge, self-efficacy and illness perception should be also addressed in lymphedema self-management programs, to facilitate more effective improvement of lymphedema self-management behaviours.

Does urban tourism development impact urban housing prices?

Purpose The purpose of this study is to investigate the relationship between tourism development and urban housing prices in Chinese cities. Specifically, the study aimed to explore whether there is a relationship between the two variables in tourist and non-tourist cities and whether there is a non-linear relationship between them. Design/methodology/approach In this study, the entropy method was used to construct the China City Tourism Development Index, which provides a more comprehensive measure of the level of tourism development in different cities. In total, 45 major cities in China were studied using the panel data approach for the period of 2011 to 2019. Findings The empirical analysis conducted for this study found that tourism development affects urban house prices, and that there is an inverted U-shaped relationship. However, this varies across cities, with house prices in tourist cities tending to be more influenced by tourism development than non-tourist cities. Also, foreign direct investment, population size, fixed asset investment and disposable income per capita were found to have an impact on house prices in both tourism and non-tourism cities. Originality/value There are significant differences in tourism development and urban house prices in different cities in China. This study considers these differences when examining the impact of tourism on house prices in 45 major cities in China by dividing the sample cities into tourist and non-tourist cities.

Methanol Vehicles in China: A Review from a Policy Perspective

Mature methanol vehicle technology with low exhaust emissions and economic benefits are a viable way to mitigate oil dependency and reduce greenhouse gas emissions. As a result, pilot projects for methanol vehicles have been carried out in 10 different cities in China over the last decade. They positively affect the economy and the environment, as shown by the acceptance results. This study chronologically reviewed the previous development and adopted pertinent policies determine the feasibility of deploying methanol vehicles from national to provincial levels. Based on the analysis and evaluations, the local government is suggested to make the following dynamic policy recommendations: (a) Before reaching the “carbon peak”, development strategies should be formulated according to the resource situation of each region. Priority should be given to the deployment of coal-to-methanol vehicles and bio-methanol vehicles to maximize the economy, so as to promote the construction of transmission and distribution systems, advance the manufacturing process of methanol fuel, and prepare the technology for the next stage. (b) In the second stage, the advancement of CO2-to-methanol technology should be promoted, focusing on the development of green methanol vehicles to better contribute to the “carbon neutrality”.

Analysis of factors affecting the construction duration of public health emergency medical facilities.

This study explores the factors influencing the construction duration of public health emergency medical facilities and the ways in which they can be enhanced. Combining 30 relevant emergency medical facility construction cases in different cities in China from 2020 to 2021, seven condition variables and an outcome variable were selected, and necessary and sufficient condition analyses of duration influence factors were conducted using the fsQCA method. The consistency of seven condition variables was <0.9, which shows that the construction period of public health emergency medical facilities is not independently affected by a single condition variable but by multiple influencing factors. The solution consistency value of the path configurations was 0.905, indicating that four path configurations were sufficient for the outcome variables. The solution coverage of the four path configurations was 0.637, indicating that they covered ~63.7% of the public health emergency medical facility cases. To reduce the construction duration, the construction of emergency medical facilities should focus on planning and design, the selection of an appropriate form of construction, the reasonable deployment of resources, and the vigorous adoption of information technology.

The AD4CHE Dataset and Its Application in Typical Congestion Scenarios of Traffic Jam Pilot Systems

Autonomous driving has attracted considerable attention from research and industry communities. Although prototypes of automated vehicles (AVs) are developed, remaining safety issues and functional insufficiencies hinder their market introduction. To obtain reasonably foreseeable scenarios and study human driving policies, many naturalistic driving datasets are proposed. However, no open-source dataset filled with congestion scenarios is publicly available. The paper presents the Aerial Dataset for China's Congested Highways & Expressways (AD4CHE). It contains 5.12 hours of aerial survey data from four different cities in China, with a total driving distance of 6540.7 km. Moreover, overlap and non-overlap cut-in scenarios are distinguished to better describe driver behavior in congestion scenarios. Both types of cut-in scenarios are extracted and parameterized. The Kernel Density Estimator (KDE) is utilized to generate parameter distributions for the scenario-based testing method. Furthermore, the driving behavior in overlap cut-in scenarios is intensively analyzed. The results reveal that the drivers have an evasive maneuver during overlap cut-in of challenging vehicles, and the preferred following distance varies with the relative longitudinal velocity. Both scenario parameterization and driving behavior analysis can contribute to developing and verifying Traffic Jam Pilot (TJP) systems deployed in Chinese traffic situations. The dataset is available at <uri xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">https://auto.dji.com/cn</uri> .

Can economic growth and urban greenness achieve positive synergies during rapid urbanization in China?

Rapid urban expansion reflects the increasing economic growth in China. As an original conceive for urban sustainability, economic growth contributes to vegetation changes. However, the spatiotemporal heterogeneity of the relationships between these two factors remains unclear in China. After analyzing the spatiotemporal characteristics of the urban expansion in different cities in China from 2002 to 2020, we found a rapid and continuous urban expansion in China, with the mean annual expansion of 1710.96 km2 year−1 (p < 0.01). However, based on the trends of annual maximum enhanced vegetation index (EVImax) and the nighttime light (NTL), a strong incoordination status (areas with significant increasing NTL (p < 0.05) but significantly decreasing EVImax) between urban greenness and economic growthwas found during this rapid urban expansion period. Spatially, >60% of cities showed incoordination status and 38.08% of cities showed strongly incoordination status. At pixels levels, these strong incoordination status in urban areas can be fully explained by long-term average NTL digital Number (DN) gradient.Based on a piecewise linear regression model, the proportion of areas with the strong incoordination status was significantly increased by the 1.07% DN−1 (p < 0.01) when multi-year average NTL value is <50, but decreased strongly afterward, with the slope of −2.96% DN−1 (p < 0.01). The strong incoordination between urban greenness and economy can be rapidly mitigated with the rapid economic growth. This threshold can be a critical indicator for decision-makers in identifying and analyzing the status of ecological civilization in various regions of China.

Comparison and evaluation of mega watts proton exchange membrane fuel cell combined heat and power system under different waste heat recovery methods

The proportion of renewable energy has emerged in the global energy structure and a range of clean energy resources and technologies are required for deep decarbonization in the global energy system, especially low-carbon hydrogen. Motivated by the net zero goal, this work proposed two proton exchange membrane fuel cell combined heat and power (PEMFC-CHP) systems with liquid cooling and phase change heat pump (PCHP) cooling, respectively. It compared its adaptivity with that of liquid cooling in terms of the MW-class thermal demand in different cities in China to provide sufficient energy but at a lower cost. The optimal system and operating conditions for different cities are determined by energy, economic and environmental analyses. The results show that the total efficiency of the PEMFC-CHP system with PCHP cooling is significantly improved at the expense of electricity efficiency compared with conventional liquid cooling. The thermal efficiency has been improved from 48.66% to 53.90% with the expense of the drop of electricity efficiency of 1.96% at the current density of 1A·cm−2. It proves that liquid cooling is more suitable for places whose winter temperature is above zero for it saves cost. While PCHP cooling presents better adaptivity in colder zones (below zero) for it can sufficiently meet the high thermal demand. The PCHP cooling in the extremely cold regions can reduce the cost by 2.47 × 106 $/year.

Evaluating the energy-saving potential of earth-air heat exchanger (EAHX) for Passivhaus standard buildings in different climates in China

The significance of constructing low-carbon buildings has been on the rise because of the growing public concern about global warming and energy prices. The Passive House (or Passivhaus) standard is widely applied throughout Europe to reduce building energy consumption. However, a large percentage of the world’s population lives in regions with not only heating demand in winter but also high cooling and dehumidification energy consumption in the hot and humid summer, such as in several regions in China. The energy consumption of buildings in these regions could not be reduced by designing or retrofitting the buildings to Passivhaus standard only, but applying appropriate low energy cooling and dehumidification technologies are also necessary. The earth-air heat exchanger (EAHX) system is a suitable solution for utilizing low-temperature soil in summer, but the performance of the EAHX system in different climates was not previously evaluated. Thus, this research aims to evaluate the energy-saving potential of the EAHX system in a multi-storey Passivhaus standard building in different cities in China with different climatic conditions. A model of the Passivhaus building with the EAHX system was developed and verified using the Passive House Institute (PHI) prediction tool, PHPP and the commercial building energy simulation tool, IES Virtual Environment (VE). The results have shown that the EAHX system achieved an annual building energy load saving of up to 12.8 kWh/m2 in regions with hot and humid summers and cold winters, such as Beijing and Shanghai. The present study shows the potential of the addition of the EAHX in enhancing the building performance to satisfy the Passivhaus standard in hot and humid climates.

Civilized cities or social credit? Overlap and tension between emergent governance infrastructures in China

Foreign imaginaries of surveillance and informatization in China are commonly connected to notions of omnipresence, advanced technology, and coherent governance. In reality, however, the Chinese government’s efforts at the building of a digital society are permeated by confusion over the meaning of central edicts, interdepartmental and regional fragmentation, and overlap between different digital governance systems. This article interrogates the connection between two emerging governance infrastructures embedded in the Chinese Party-state’s latest informatization drive, the “National Civilized Cities Award” (NCCA) and the “Social Credit System Project” (SCSP) through a mixed methods approach. It combines data from an analysis of a recent NCCA assessment system government work manual, project websites, and findings from thirty qualitative video interviews with residents from twenty different cities in China to demonstrate that overlap between these projects is clear in terms of 1) criteria and indices measuring project development; 2) promoted virtues and individual behaviors; and 3) data sharing between systems. Local governments charged with the design and implementation of these initiatives frequently conflate their targets and objectives, prompting occasional reprimand from higher-level authorities. Public confusion about the meaning and purpose of both the NCCA and SCSP has meanwhile accompanied haphazard system development, demonstrating that the path towards a “digital society” in China is fraught and far from uncontested.

A brain structural connectivity biomarker for autism spectrum disorder diagnosis in early childhood.

Autism spectrum disorder (ASD) is associated with altered brain development, but it is unclear which specific structural changes may serve as potential diagnostic markers, particularly in young children at the age when symptoms become fully established. Furthermore, such brain markers need to meet the requirements of precision medicine and be accurate in aiding diagnosis at an individual rather than only a group level. This study aimed to identify and model brain-wide differences in structural connectivity using diffusion tensor imaging (DTI) in young ASD and typically developing (TD) children. A discovery cohort including 93 ASD and 26 TD children and two independent validation cohorts including 12 ASD and 9 TD children from three different cities in China were included. Brain-wide (294 regions) structural connectivity was measured using DTI (fractional anisotropy, FA) together with symptom severity and cognitive development. A connection matrix was constructed for each child for comparisons between ASD and TD groups. Pattern classification was performed on the discovery dataset and the resulting model was tested on the two independent validation datasets. Thirty-three structural connections showed increased FA in ASD compared to TD children and associated with both autistic symptom severity and impaired general cognitive development. The majority (29/33) involved the frontal lobe and comprised five different networks with functional relevance to default mode, motor control, social recognition, language and reward. Overall, classification achieved very high accuracy of 96.77% in the discovery dataset, and 91.67% and 88.89% in the two independent validation datasets. Identified structural connectivity differences primarily involving the frontal cortex can very accurately distinguish novel individual ASD from TD children and may therefore represent a robust early brain biomarker which can address the requirements of precision medicine.

Abstract P6-01-19: Multiparametric MRI-based Longitudinal-radiomics Analysis for Early Prediction of Treatment Response of Breast Cancers to Neoadjuvant Chemotherapy: A Multicenter Study

Abstract P6-01-19: Multiparametric MRI-based Longitudinal-radiomics Analysis for Early Prediction of Treatment Response of Breast Cancers to Neoadjuvant Chemotherapy: A Multicenter Study

Assessing the effectiveness of the intervention measures of COVID-19 in China based on dynamical method.

Normalized interventions were implemented in different cities in China to contain the outbreak of COVID-19 before December 2022. However, the differences in the intensity and timeliness of the implementations lead to differences in final size of the infections. Taking the outbreak of COVID-19 in three representative cities Xi'an, Zhengzhou and Yuzhou in January 2022, as examples, we develop a compartmental model to describe the spread of novel coronavirus and implementation of interventions to assess concretely the effectiveness of Chinese interventions and explore their impact on epidemic patterns. After applying reported human confirmed cases to verify the rationality of the model, we apply the model to speculate transmission trend and length of concealed period at the initial spread phase of the epidemic (they are estimated as 10.5, 7.8, 8.2 days, respectively), to estimate the range of basic reproduction number (2.9, 0.7, 1.6), and to define two indexes (transmission rate v t and controlled rate v c ) to evaluate the overall effect of the interventions. It is shown that for Zhengzhou, v c is always more than v t with regular interventions, and Xi'an take 8 days to achieve v c > v t twice as long as Yuzhou, which can interpret the fact that the epidemic situation in Xi'an was more severe. By carrying out parameter values, it is concluded that in the early stage, strengthening the precision of close contact tracking and frequency of large-scale nucleic acid testing of non-quarantined population are the most effective on controlling the outbreaks and reducing final size. And, if the close contact tracking strategy is sufficiently implemented, at the late stage large-scale nucleic acid testing of non-quarantined population is not essential.

Predicting the intention and adoption of hydroponic farming among Chinese urbanites

Urban agriculture has become increasingly popular as a viable solution to the global food insecurity, but the uncontrollable expansion of cities and populations has led to the significant decrease in cultivable space for conventional soil-based farming. Unlike conventional agriculture, soil-less hydroponic farming allows sustainable food production in urban areas without compromising the environment and public health. Using both theory of planned behaviour and knowledge-attitude-behaviour theory with four additional factors, the current study examined the intention and adoption of hydroponic farming among Chinese urbanites. An online survey, which involved 661 respondents from different cities in China, was conducted. The results of partial least squares structural equation modeling revealed the significant influence of tolerance of diversity, innovativeness, and knowledge about hydroponic system on attitude towards hydroponic system. Additionally, knowledge and attitude towards hydroponic system, perceived need for hydroponic farming, and hydroponic farming compatibility were found to significantly influence the intention of adopting hydroponic farming, which was also found to exhibit significant influence on its actual adoption. This study presented valuable insights that contribute to the development of a framework that promotes effective farming practices and strategies. The obtained findings can benefit marketers, practitioners, and policymakers in the agricultural and environmental fields, particularly in their efforts of planning, designing, marketing, and strategizing to promote modern agricultural practices and create a favourable environment for urban hydroponic farming in developing countries.

Characteristics of staphylococcal cassette chromosome mec and lugdunin operon genes in the complete genome of Staphylococcus lugdunensis.

Characteristics of staphylococcal cassette chromosome mec and lugdunin operon genes in the complete genome of Staphylococcus lugdunensis.

What is the Role of Chest CT Scan for Pediatric Patient Diagnosis of COVID-19?

Objective: To retrospectively analyze the CT imaging features and patterns at baseline and as they evolve with time as the disease progresses or resolves in a cohort of pediatric patients affected with 2019 corona virus disease (COVID-19) pneumonia from three different cities in China.

Multicentre clinical study of haemorrhage after coblation tonsillectomy in children: a prospective study protocol

IntroductionPost-tonsillectomy haemorrhage (PTH) is the most common and significant life-threatening complication following tonsillectomy, especially in children. Coblation tonsillectomy (CTE) at low temperature is extensively used in China and has gradually...

Evolution of Ozone Pollution in China: What Track Will It Follow?

Increasing surface ozone (O3) concentrations has emerged as a key air pollution problem in many urban regions worldwide in the last decade. A longstanding major issue in tackling ozone pollution is the identification of the O3 formation regime and its sensitivity to precursor emissions. In this work, we propose a new transformed empirical kinetic modeling approach (EKMA) to diagnose the O3 formation regime using regulatory O3 and NO2 observation datasets, which are easily accessible. We demonstrate that mapping of monitored O3 and NO2 data on the modeled regional O3-NO2 relationship diagram can illustrate the ozone formation regime and historical evolution of O3 precursors of the region. By applying this new approach, we show that for most urban regions of China, the O3 formation is currently associated with a volatile organic compound (VOC)-limited regime, which is located within the zone of daytime-produced O3 (DPO3) to an 8h-NO2 concentration ratio below 8.3 ([DPO3]/[8h-NO2] ≤ 8.3). The ozone production and controlling effects of VOCs and NOx in different cities of China were compared according to their historical O3-NO2 evolution routes. The approach developed herein may have broad application potential for evaluating the efficiency of precursor controls and further mitigating O3 pollution, in particular, for regions where comprehensive photochemical studies are unavailable.