scholarly journals The Impact of the Dynamics of Agglomeration Externalities on Air Pollution: Evidence from Urban Panel Data in China

2022 ◽  
Vol 14 (1) ◽  
pp. 580
Author(s):  
Xiaolan Tan ◽  
Wentao Yu ◽  
Shiwei Wu
Keyword(s):  
Air Pollution ◽  
Panel Data ◽  
Dynamic Change ◽  
Urban China ◽  
Mature Stage ◽  
Regional Specialization ◽  
Agglomeration Externalities ◽  
Haze Pollution ◽  
The Impact ◽  
The Relationship

Air pollution in China has become a matter of increasing public concern. In this paper, we attempted to build a theoretical model to explore the impact of the dynamics of agglomeration externalities on haze pollution in urban China, where agglomeration is differentiated by regional specialization and geographical concentration. Based on China’s panel data for 289 cities during the period of 1998–2018, the empirical result shows that the relationship between industrial agglomeration and urban haze pollution is not simply linear or of an inversed U-type but turns out to be dynamically N-shaped. To be specific, the increase in local haze pollution can be explained by agglomeration externalities in the beginning stage, whereas the reducing effect only occurs during the mature stage. The heterogeneity test indicated that the effect of the type of agglomeration on haze pollution seems to be mixed in different groups of cities, but is still consistent with the hypothesis of the dynamic change of agglomeration externalities. The results are found to be quite robust and consistent after replacing variables and using other regression methods. This paper provides answers to the question of how to coordinate the relationship between developing industry parks and air pollution in terms of the life cycle of agglomeration as well as the types of city.

Retrospective analysis of the resilience of Russian regions as socio-economic systems

2019 ◽  
pp. 46-64 ◽  
Author(s):  
Vladimir V. Klimanov ◽  
Sofiya М. Kazakova ◽  
Anna A. Mikhaylova
Keyword(s):  
Panel Data ◽  
Economic Systems ◽  
Financial Indicators ◽  
Russian Regions ◽  
Integral Index ◽  
Negative Effects ◽  
Economic Resilience ◽  
Correlation Dependence ◽  
The Impact ◽  
The Relationship

The article examines the impact of various socio-economic and financial indicators on the resilience of Russian regions. For each region, the integral index of resilience is calculated, and its correlation dependence with the selected indicators is revealed. The study confirms the relationship between fiscal resilience and socio-economic resilience of the regions. The analysis of panel data for 75 regions from 2007 to 2016 shows that there are significant differences in the dynamics of indicators in different periods. In particular, the degree of exposure to the negative effects of the crises of 2008—2009 and 2014—2015 in non-resilient regions is higher than in resilient ones.

scholarly journals The modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo, China

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Rui Zhang ◽  
Yujie Meng ◽  
Hejia Song ◽  
Ran Niu ◽  
Yu Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
High Temperature ◽  
Air Pollutants ◽  
Meteorological Data ◽  
Effect Of Temperature ◽  
Distributed Lag ◽  
Modification Effect ◽  
Incidence Risk ◽  
The Impact ◽  
The Relationship

Abstract Background Although exposure to air pollution has been linked to many health issues, few studies have quantified the modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo, China. Methods The data of daily incidence of influenza and the relevant meteorological data and air pollution data in Ningbo from 2014 to 2017 were retrieved. Low, medium and high temperature layers were stratified by the daily mean temperature with 25th and 75th percentiles. The potential modification effect of temperature on the relationship between air pollutants and daily incidence of influenza in Ningbo was investigated through analyzing the effects of air pollutants stratified by temperature stratum using distributed lag non-linear model (DLNM). Stratified analysis by sex and age were also conducted. Results Overall, a 10 μg/m3 increment of O3, PM2.5, PM10 and NO2 could increase the incidence risk of influenza with the cumulative relative risk of 1.028 (95% CI 1.007, 1.050), 1.061 (95% CI 1.004, 1.122), 1.043 (95% CI 1.003, 1.085), and 1.118 (95% CI 1.028, 1.216), respectively. Male and aged 7–17 years were more sensitive to air pollutants. Through the temperature stratification analysis, we found that temperature could modify the impacts of air pollution on daily incidence of influenza with high temperature exacerbating the impact of air pollutants. At high temperature layer, male and the groups aged 0–6 years and 18–64 years were more sensitive to air pollution. Conclusion Temperature modified the relationship between air pollution and daily incidence of influenza and high temperature would exacerbate the effects of air pollutants in Ningbo.

scholarly journals Dome effect of black carbon and its key influencing factors: A one-dimensional modelling study

2017 ◽  
Author(s):  
Zilin Wang ◽  
Xin Huang ◽  
Aijun Ding
Keyword(s):  
Boundary Layer ◽  
Air Pollution ◽  
Black Carbon ◽  
Rural Areas ◽  
Land Surface ◽  
Critical Role ◽  
Aerosol Layer ◽  
Near Surface ◽  
Haze Pollution ◽  
The Impact

Abstract. Black carbon (BC) has been identified to play a critical role in aerosol-planet boundary layer (PBL) interaction and further deterioration of near-surface air pollution in megacities, which has been named as its dome effect. However, the impacts of key factors that influence this effect, such as the vertical distribution and aging processes of BC, and also the underlying land surface, have not been quantitatively explored yet. Here, based on available in-situ measurements of meteorology and atmospheric aerosols together with the meteorology-chemistry online coupled model, WRF-Chem, we conduct a set of parallel simulations to quantify the roles of these factors in influencing the BC's dome effect and surface haze pollution, and discuss the main implications of the results to air pollution mitigation in China. We found that the impact of BC on PBL is very sensitive to the altitude of aerosol layer. The upper level BC, especially those near the capping inversion, is more essential in suppressing the PBL height and weakening the turbulence mixing. The dome effect of BC tends to be significantly intensified as BC aerosol mixed with scattering aerosols during winter haze events, resulting in a decrease of PBL height by more than 25 %. In addition, the dome effect is more substantial (up to 15 %) in rural areas than that in the urban areas with the same BC loading, indicating an unexpected regional impact of such kind of effect to air quality in countryside. This study suggests that China's regional air pollution would greatly benefit from BC emission reductions, especially those from the elevated sources from the chimneys and also the domestic combustions in rural areas, through weakening the aerosol-boundary layer interactions that triggered by BC.

scholarly journals The Role of Urbanization Rate in the Relationship between Air Pollution and Health Expenditures: A Dynamic Panel Data Approach

2015 ◽  
Vol 53 ◽  
pp. 68-72 ◽  
Author(s):  
Maryam Fattahi
Keyword(s):  
Air Pollution ◽  
Generalized Method Of Moments ◽  
Health Expenditures ◽  
Dynamic Panel Data ◽  
Dynamic Panel ◽  
Public And Private ◽  
Urbanization Rate ◽  
The Impact ◽  
The Relationship

One of the available challenges in areas of health economics is identification of the effective factors on health expenditures. Air pollution plays important role in the public and private health expenditure but most studies have ignored the role of this category in explanation of health expenditures. On the other hand, the impact of air pollution on health expenditures is influenced by several factors. This study intends to investigate the effect of air pollution on public and private health expenditures and to identify the urbanization rate factor affecting the relationship between air pollution and public and private health expenditures. Scope of the present study is developing countries over period of 1995-2011. We used a dynamic panel and Generalized Method of Moments method. The empirical results indicate that air pollution has positive and significant effect on public and private health expenditures. Also, the results imply that urbanization rate affecting the relationship between air pollution and health expenditures that urbanization rate plays a reinforcing role.

scholarly journals The impact of air quality on its Baidu index: grey model analysis

2021 ◽  
Author(s):  
Leping Tu ◽  
Yan Chen
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Quality Index ◽  
Air Quality Index ◽  
Grey Correlation ◽  
Convolution Model ◽  
Grey Correlation Analysis ◽  
And Control ◽  
The Impact ◽  
The Relationship

Abstract To investigate the relationship between air quality and its Baidu index, we collect the annual Baidu index of air pollution hazards, causes and responses. Grey correlation analysis, particle swarm optimization and grey multivariate convolution model are used to simulate and forecast the comprehensive air quality index. The result shows that the excessive growth of the comprehensive air quality index will lead to an increase in the corresponding Baidu index. The number of search for the causes of air quality has the closest link with the comprehensive air quality index. Strengthening the awareness of public about air pollution is conducive to the improvement of air quality. The result provides a reference for relevant departments to prevent and control air pollution.

The impact of media on entrepreneurship participation: a cross-country panel data analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Muhammad Arshad ◽  
Sharjeel Saleem ◽  
Rabeeya Raoof ◽  
Naheed Sultana
Keyword(s):  
Panel Data ◽  
New Product Development ◽  
Indirect Effect ◽  
Cognitive Theory ◽  
Early Stage ◽  
Entrepreneurial Intention ◽  
Content Type ◽  
Informal Investment ◽  
The Impact ◽  
The Relationship

Purpose Unlike the previous studies that examined the direct relationship between media attention on entrepreneurship (MAE) and entrepreneurship participation, this paper aims to examine the mediated link through entrepreneurial intention. Design/methodology/approach The cognitive theory of media provides the foundation for predictions that primary outcome of MAE is the entrepreneurial intention which in turn affects the different types of entrepreneurship participation (early-stage startup activities, new product development [NPD] activities and informal investment activities). The test of the hypothesized model relies on panel data for 2010–2015 on 40 developing and developed countries taken from the Global Entrepreneurship Monitor report of 2015. Findings MAE has an indirect effect on two types of entrepreneurship participation (early-stage startup activities and informal investment activities) via entrepreneurial intention, whereas there is no direct or indirect effect of MAE on NPD activities. The findings also suggest when the entrepreneurial intention is added as a mediator in the model; the direct effect of MAE on early-stage entrepreneurial activities becomes insignificant. Originality/value To the best of the authors’ knowledge, this is the first study in its nature which established the relationship between MAE and entrepreneurial intention. In addition, this study also explained the mediation mechanism between the relationship of MAE and entrepreneurship participation by using the panel data.

Abstract 17973: Biomass Fuel Use is Associated With Elevated Blood Pressure and Hypertension Status in Puno, Peru

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Melissa S Burroughs Pena ◽  
Karina Romero ◽  
Antonio Bernabe Ortiz ◽  
Eric J Velazquez ◽  
J. Jaime Miranda ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Air Pollution ◽  
Systolic Blood Pressure ◽  
Self Report ◽  
Biomass Fuel ◽  
Household Air Pollution ◽  
Biomass Fuels ◽  
Fuel Use ◽  
The Impact ◽  
The Relationship

Background: Household air pollution from biomass fuel use affects 3 billion people worldwide. There are few studies that examine the relationship between biomass fuel use and blood pressure. We sought to determine if daily biomass fuel use was associated with higher blood pressure and increased hypertension in Peru. Methods: We analyzed baseline information from an age- and sex-matched, population-based study in Puno, Peru. Daily biomass fuel use was self-reported. Hypertension was defined as a systolic blood pressure (SBP) ≥140 mmHg; diastolic blood pressure (DBP) ≥90 mmHg; or self-report of diagnosis and anti-hypertensive medications. We used linear and logistic multivariable regressions, adjusting for age, sex, daily cigarette use and body mass index, to examine the relationship between daily biomass fuel use with blood pressure and hypertension, respectively. Results: Data from 1004 individuals (mean age 55.3 years, 51.7% female) were included. There was evidence of an association between daily biomass fuel use and hypertension (adjusted OR = 2.1, 95%CI 1.2 to 3.5). Subjects who reported daily use of biomass fuels had 6.0 mmHg (95% CI 4.1 to 8.0) higher SBP and 4.8 mmHg (95%CI 3.5 to 6.0) higher DBP compared to those who did not use biomass fuels daily. In a secondary analysis, we used rural residence (vs. urban) as a proxy of biomass daily use and the relationship with hypertension and systolic blood pressure was similar: a higher odds of hypertension (adjusted OR = 2.1, 95%CI 1.3 to 3.6), and higher SBP (6.7mmHg, 95% CI 4.8 to 8.6) and DBP (5.5 mmHg, 95% CI 4.3 to 6.8) in rural vs. urban participants. Conclusion: Biomass fuel use is associated with increased odds of hypertension and higher blood pressure in Puno, Peru. Reducing exposure to air pollution from biomass fuel use represents a potential opportunity for cardiovascular prevention in rural communities worldwide. Longitudinal studies to evaluate the impact of reducing household air pollution are needed.

scholarly journals Evaluation of the impact of meteorological conditions on the amount of air pollution in Krakow

2019 ◽  
Vol 108 ◽  
pp. 02012
Author(s):  
Małgorzata Piaskowska-Silarska ◽  
Krzysztof Pytel ◽  
Stanisław Gumuła ◽  
Wiktor Hudy
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Measurement Data ◽  
Ecological Monitoring ◽  
Meteorological Conditions ◽  
Pollution Problem ◽  
Air Quality Improvement ◽  
Meteorological Elements ◽  
The Impact ◽  
The Relationship

Abstract. The publication presents an assessment of the impact of meteorological conditions on air quality in a given location. The subject matter of the work is related to problem-review issues in the field of environmental protection and energy management. The publication draws attention to the fact that despite several decades of ecological monitoring of air pollution, only in recent years attention has been paid to the scale of air pollution problem. The study examined the relationship between meteorological elements (wind velocity, relative humidity on the amount of air pollution immissions. Significant impact of precipitation, atmospheric pressure and thermal braking layer was indicated. The possibilities of air quality improvement were presented based on the measurement data concerning the immission of impurities.

New Evidence on the Relationship Between Economic Freedom and Growth: A Panel Cointegration Analysis for The Case of OECD

2012 ◽  
Vol 12 (3) ◽  
pp. 1850263 ◽  
Author(s):  
Ekrem Erdem ◽  
Can Tansel Tugcu
Keyword(s):  
Economic Growth ◽  
Panel Data ◽  
Total Factor Productivity ◽  
Economic Freedom ◽  
Global Financial Crisis ◽  
Oecd Countries ◽  
Cointegration Analysis ◽  
Factor Productivity ◽  
The Impact ◽  
The Relationship

The aim of this paper is to find a new answer to an old question “Is economic freedom good or not for economies?” which was refreshed after the Global Financial Crisis of 2008. For this purpose, the relationship between economic freedom and economic growth, and the relationship between economic freedom and total factor productivity in OECD countries were investigated by using panel data for the period of 1995-2009. Study employed the recently developed cointegration test by Westerlund (2007) and the estimation technique by Bai and Kao (2006) which account for cross-sectional dependence that is an important problem in the panel data studies. Although no significant relationship found between economic freedom and total factor productivity, cointegration analysis revealed that economic freedom matters for economic growth in OECD countries in the long-run, and estimation results showed that direction of the impact is negative.

Comparison of International Differences in the Volatility of Economic Growth and Non-Performing Loan Ratio: A Statistical Study Based on the Quantile Regression Model

2017 ◽  
Vol 21 (6) ◽  
pp. 1094-1101
Author(s):  
Song Qin ◽  
Zhenlei Wang ◽  
◽  
◽  
Keyword(s):  
Economic Growth ◽  
Panel Data ◽  
Quantile Regression ◽  
Regression Models ◽  
Banking Sector ◽  
Statistical Study ◽  
Quantile Regression Model ◽  
The Us ◽  
The Impact ◽  
The Relationship

What is the level of non-performing loans in China’s banking sector and in different countries? Has the relationship between economic growth and the non-performing loan ratio changed? Is there a difference in the effect of the economic growth of different economies on the rate of non-performing loans in the banking sector? This study analyzes the relationship between economic growth and the non-performing loan ratios and characteristics of 13 countries from 2005-2014 based on quantile regression models with panel data. The results showed that the relationship between economic growth and the non-performing loan ratio was positive before the financial crisis in 2008 but was negative after 2008. The non-performing loan ratio in Canada, Mexico, and the US was low before 2008 and high after 2008. The impact of economic growth on the non-performing loan ratio was more significant for countries with a high non-performing loan ratio than for countries with a low non-performing loan ratio.

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