通讯机构：
[He, H ] H;Hunan Univ Sci & Engn, Res Inst Rural Revitalizat, Yongzhou 425199, Peoples R China.
关键词：
transportation infrastructure development;rural-urban income gap: urbanization;spatial inequality;spatial Dubin model;intermediary effect model
摘要：
The development of transportation infrastructure plays a pivotal role in the regional economy from multiple dimensions. The aim of this paper is to examine the relationship between transportation infrastructure development and income inequality in urban and rural areas of China. The study utilizes panel data from 30 provinces, spanning the years 2010 to 2020, and employs the spatial Dubin model to measure and test the impact of transportation infrastructure on the urban-rural income gap. Furthermore, an intermediary effect test method is used to investigate the potential mediating effect of urbanization in this relationship. The results indicate that transportation infrastructure has a significantly negative direct, indirect, and total effect on the urban-rural income gap, with the indirect effect being greater than the direct effect. This suggests that transportation infrastructure can effectively reduce income disparities, with a noticeable spatial spillover effect. The level of urbanization plays a significant intermediary effect on the effect of transportation infrastructure on the urban-rural income gap, highlighting the role of transportation infrastructure in improving urbanization and narrowing income disparities. These findings underscore the importance of enhancing both the level of urbanization and cooperation between neighbouring regions in order to maximize the benefits of transportation infrastructure development for reducing income disparities and promoting regional balance in China.
摘要：
This paper focuses on optimizing the long- and short-term planning of the perishable product supply chain network (PPSCN). It addresses the integration of strategic location, tactical inventory, and operational routing decisions. Additionally, it takes into consideration the specific characteristics of perishable products, including their shelf life, inventory management, and transportation damages. The main objective is to minimize the overall supply chain cost. To achieve this, a nonlinear mixed integer programming model is developed for the multi-echelon, multi-product, and multi-period location-inventory-routing problem (LIRP) in the PPSCN. Two hybrid metaheuristic algorithms, namely genetic algorithm (GA) and multiple population genetic algorithm (MPGA), are hybridized with variable neighborhood search (VNS) and proposed to solve this NP-hard problem. Moreover, a novel coding method is devised to represent the complex structure of the LIRP problem. The input parameters are tuned using the Taguchi experimental design method, considering the sensitivity of meta-heuristic algorithms to these parameters. Through experiments of various scales, the hybrid MPGA with VNS indicates superior performance, as evidenced by the experimental results. Sensitivity analysis is conducted to examine the influence of key model parameters on the optimal objective, providing valuable management implications. The results clearly validate the efficacy of the proposed model and solution method as a reliable tool for optimizing the design problem of the PPSCN.
关键词：
Urban parks;Cool island intensity;Landscape morphology;Thermal environment;Simultaneous equation modeling
摘要：
Urban parks have significant cooling effects that alleviate the urban heat island (UHI). The park cool island intensity (PCII), the temperature difference between outside and inside a park, is a widely used indicator of a park’s cooling ability. Understanding the driving factors of the PCII is crucial for better urban park planning and management. Taking the subtropical city of Changsha, China, as a case study, factors such as the landscape patterns inside and outside a park and the geometric morphology of a park were investigated, based on 153 urban parks. A novel simultaneous equation modeling (SEM) approach was used to account for the mutual interactions between the temperatures of a park and its buffer. The results show that: (1) Park geometric morphology and landscape patterns inside and outside the park all significantly impact the PCII. Specifically, doubling the park size can increase the PCII by 0.8 K. Increasing by ten percent the tree cover and water cover in the park can enhance the PCII by 0.12 K and 0.41 K, respectively. Increasing the mean tree patch size by 1 ha can increase the PCII by 0.43 K. Decreasing by one unit the mean tree patch shape index can increase the PCII by 0.31 K. (2) An elasticity analysis, which measures the PCII percent change resulting from one percent change in a driving factor, indicates the relative importance ranking of these driving factors: percent cover of impervious surface outside the park (0.77), park size (0.72), percent cover of tree within the park (0.51), percent cover of water within the park (0.12), and mean patch size of tree cover within the park (0.086). To enhance the PCII, we recommend building parks in the hot areas of the city, increasing their size, increasing the percentages of tree cover and water cover in the park, and optimizing the spatial configuration of the tree cover in the park (i.e., aggregating trees in a smaller number of large patches and reducing the irregularity of tree patches).
摘要：
The current pandemic has increased natural resource volatility and unpredictability, impacting every economic and financial sector. Health problems and financial losses worsen the situation and push countries dangerously close to recession. This research examines the effects of natural resource rents on China's financial growth from 1988 to 2021, including the effects of oil, mineral, and forest rents. The study also covered other financial growth aspects, such as spending on R&D and renewable energy. So, in order to review our data, we also incorporated conventional and second-generation diagnostic tests. We used ADF with structural breaks and ADF-GLS to test the data's stationarity. The Johansen cointegration test is used to determine long-term cointegration. FMOLS, DOLS, CCR, and least squares with break years were used in the research to examine the factors' long-term impacts. At the same time, non-parametric quantile regression was included at the end to examine the findings non-parametrically as part of the robustness check. The results show long-term cointegration between variables and that the variables are static at the difference. Furthermore, long-term results show that oil and forest rentals have a detrimental influence on financial development. Mineral rents, on the other hand, have little and ambiguous long-term impacts. Investments in renewable energy and R&D. favorably and considerably impact financial development. The robustness findings show that, in contrast to R&D and renewable energy gains, oil rents also become small with time across all quantiles. The other factors continue to have a comparable impact and their results are consistent with the major findings.
作者机构：
[Luo, Shuangcheng] Hunan Agr Univ, Sch Econ, Changsha 410128, Peoples R China.;[Yuan, Yangli] Beijing Foreign Studies Univ, Sch Int Relationships & Diplomacy, Beijing 100089, Peoples R China.
通讯机构：
[Shuangcheng Luo] S;School of Economics, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Energy conservation and emission reduction are important ways to cope with global warming. An analysis of energy conservation and emission reduction from the perspective of network infrastructure construction provides an important perspective for the study of sustainable development. Based on the research sample of 263 cities in China from 2006 to 2019, and taking the policy of “Broadband China” as a quasi-natural experiment, this paper uses the double difference model to evaluate the impact of network infrastructure construction on energy conservation and emission reduction. The results show that (1) the construction of network infrastructure can significantly improve the energy utilization rate and reduce carbon emissions intensity, which helps to promote energy conservation and emission reduction. (2) From the perspective of a functional mechanism, on the one hand, network infrastructure construction affects energy conservation and emission reduction through micro-mechanisms such as green technology innovation and energy efficiency. On the other hand, network infrastructure construction also drives the development of the Internet and the digital economy, and promotes energy conservation and emission reduction through macro-mechanisms such as industrial structure and financial development. (3) The heterogeneity analysis shows that network infrastructure construction in non-resource-based cities, eastern regions and low-carbon cities has a greater impact on energy conservation and emission reduction. This study provides a new perspective for achieving low-carbon development goals.
作者机构：
[Yang, Xia; Peng, Bo; Zhang, Kun; Zhang, K] Hunan Normal Univ, Sch Geog Sci, Changsha 410081, Peoples R China.;[Zhang, Kun; Zhang, K] Hunan Agr Univ, Coll Resources, Changsha 410128, Peoples R China.;[Yang, Xia; Peng, Bo] Hunan Normal Univ, Key Lab Environm Heavy Met Contaminat & Ecol Remed, Changsha 410081, Peoples R China.
通讯机构：
[Zhang, K ] H;Hunan Normal Univ, Sch Geog Sci, Changsha 410081, Peoples R China.;Hunan Agr Univ, Coll Resources, Changsha 410128, Peoples R China.
关键词：
heavy metal pollution;distribution pattern;Xiangjiang River;Geoaccumulation index;ecological risk
摘要：
This study focuses on the riverbed sediments in the Changsha-Zhuzhou-Xiangtan (CS-ZZ-XT) section of the lower reaches of the Xiangjiang River. Principal element analysis, ecological risk analysis, and early warning methods were used to explore the distribution pattern and risk assessment of various chemical elements in the sediments. The results indicated that the vertical distributions of Sc, Co, Th, and U were more homogeneous, while Cr, V, Cu, and Ni distributed heterogeneously with significant changes. Risk assessment of heavy metals was explored by using the Geoaccumulation index, potential ecological risk index, and ecological risk index, suggesting that the contamination levels followed: ZZ > XT > CS. ZU and ZX points in the ZZ section exhibited the higher ecological risk. The ecological risk of heavy metals followed the order of: Pb > Cu > Zn > Ni > Co > Mn > V > Cr, and the contamination of Cd and Mn was located at the severe warning condition. Additionally, it was suggested that Th, U, Pb, Zn, Cu, and Mn mostly originated from both anthropogenic activities and natural processes, while Ni, Cr, Co, V, Sc, and Ba were derived from natural processes. Therefore, the contamination of Cd, Th, U, Pb, Zn, Cu, and Mn, especially Cd and Mn, should be considered by the environmental protection strategies in the studied watershed.
关键词：
Middle-aged and elderly men;Chronic diseases;Prevalence;Influencing factors;China
摘要：
The prevalence of chronic diseases has increased in recent years among middle-aged and elderly men in China. This study focuses on the current prevalence and factors influencing chronic diseases among middle-aged and elderly men in the context of population ageing. The aim is to provide a reference for the development of preventive and control measures for chronic diseases and to improve the health of middle-aged and elderly men in China. Data was obtained from the 2018 China Health and Retirement Longitudinal Study (CHARLS), and the middle-aged and older population of men (aged 45 and above) were considered for analysis. The factors affecting the prevalence of chronic diseases were analysed using a binary logistic regression model, with the presence or absence of chronic diseases as the dependent variable and personal characteristics and lifestyle as the independent variables. The results of descriptive statistics showed that the prevalence of chronic diseases among middle-aged and elderly men in China was 42.6%, the top five diseases being hypertension (14.7%), arthritis and rheumatism (12.8%), stomach diseases (9.9%), dyslipidaemia (9.7%) and heart disease (6.6%). The results of the multivariate logistic regression analysis showed that ages between 60 and 70 years (OR (odds Ratio) = 0.565, 95% CI (confidence interval) = 0.398-0.802), living in a combination of urban and rural areas (OR = 1.276, 95% CI = 1.086-1.498), smoking (OR = 0.458, 95% CI = 0.357-0.587), sleeping for 6- 7 h (OR = 1.255, 95% CI = 0.994-1.585), self-rated good health (OR = 1.846, 95% CI = 1.549-2.200) and self-rated very good health (OR = 1.758, 95% CI = 1.454- 2.126) were factors that influenced the prevalence of chronic diseases among Chinese middle-aged and elderly men. The Chinese government should formulate NCD (Noncommunicable diseases) prevention and control measures suitable for the middle-aged and elderly population of men according to different regions and groups. These measures can help improve the health levels of the middle-aged and elderly population and comprehensively promote the concept of healthy ageing.
通讯机构：
[He, ST ] S;Shanghai Univ, Sch Management, Shanghai 200444, Peoples R China.
关键词：
Complex network evolutionary game;Individualized consumption;Digitalization;NW small world network;Digital diffusion
摘要：
This article uses a complex network evolution model to analyze the impact of the proportion of personalized demand population and willingness to pay on the diffusion of enterprise digital strategies through digital simulation. The research results show that (1) the proportion of the population and willingness to pay have a positive effect on promoting the diffusion of enterprise digitization, but the latter's effect has a marginal diminishing effect; (2) willingness to pay cannot guarantee 100% industrial digitization. When these two factors are low, the diffusion of enterprise digitization will fail, and the degree of failure is influenced by the concentration, degree, and distribution of competition; (3) in general, the overall average revenue of enterprises is positively correlated with the proportion of the population and willingness to pay, but the latter has a relatively small effect on digital diffusion. Therefore, the following two policy recommendations are proposed: to strengthen demand-side structural reform, to reasonably allocate consumer demand, and to promote the diffusion of industrial digitization and avoid excessive competition among enterprises. This article expands the theory of industrial digitization from the perspectives of market demand and innovation diffusion and from the demand side to provide references for constructing effective policies for the development of industrial digitization in the digital economy.
摘要：
Sex identification is linked to sexual dimorphism and is an important study issue in fish biology and aquaculture. However, owing to the unmarked sexual heteromorphism between adult Hemibarbus labeo, it is often difficult to distinguish their sex by visual observation. This study aimed to find a simple and reliable morphometric criterion for the sex identification of H. labeo using discriminant models. Forty-two morphometric traits of sixty-eight H. labeo individuals collected from the Jinhe River were measured, and 41 standardized features were calculated and analyzed. Eight trait variables from 41 standardized attributes were screened using stepwise discriminant analysis. The total classification accuracy of the model was 95.59%. Twelve standardized features significantly differed between male and female H. labeo individuals (p < 0.05). The condition factor, body height, dorsal fin coxal length, the distance between the pelvic and anal fins, and body length were significantly greater in females than in males (p < 0.05), suggesting that females of H. labeo in the Jinhe River were plumper than males, with a larger body size, but a smaller caudal peduncle. These results implied that the sex identification of H. labeo can be performed using the discriminant equation established in this study. This study provides a theoretical basis for endangered fish species protection and their artificial propagation.
摘要：
Purpose
This paper aims to establish a systematic cognition to alleviate the supply–demand contradiction in rural financial markets from an integrated perspective of knowledge management and proposes the concept of rural financial knowledge ecosystem (RFKE) to encourage multifaceted solutions.
Design/methodology/approach
The authors qualitatively describe the process that the knowledge management dilemmas cause the supply–demand contradiction in the rural finance and further summarize a systematic methodology from three dimensions: the knowledge subject, the knowledge environment and the knowledge ecology.
Findings
The authors list four types of knowledge management dilemmas leading to the supply–demand contradiction in the rural finance, i.e. the weak knowledge sharing, the poor knowledge flow, the slow knowledge updating and the imperfect knowledge environment. Meanwhile, the RFKE model consisting of the ecological subject, the ecological environment and the ecological regulation is also presented.
Research limitations/implications
The role of knowledge management in improving the allocation of financial resources to various rural financial market participants (government, rural financial institutions, farmers, agricultural enterprises, etc.).
Originality/value
The authors creatively give the RFKE model, which complements and enriches the theory of knowledge management. Meanwhile, relevant management practices are urgently needed under the macro circumstance of the COVID-19 pandemic and the rural revitalization in China.
通讯机构：
[Peng Yating] S;School of Pharmacy, Changsha Health Vocational College, Changsha 410600, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
domestic violence;emotional abuse;educational achievements;physical and mental health
摘要：
This paper takes the China Health and Retirement Longitudinal Survey (CHARLS) as a sample to assess the long-term impacts of domestic violence experienced in childhood on individuals. First, from the four dimensions of injury from violence, negligent care, emotional abuse and witness to domestic violence, an indicator system for quantifying domestic violence is constructed. Second, the simultaneous equation of self-evaluation health and life satisfaction is estimated by the seemingly unrelated regression model. Starting with education, health and life satisfaction, the long-term impact of domestic violence experiences on individuals is quantitatively assessed, providing empirical evidence for preventing and curing domestic violence and healing trauma. The empirical research shows the following: (1) An experience of domestic violence significantly reduces educational achievements. Compared with the three dimensions of injury from violence, negligent care and witnessing domestic violence, emotional abuse has the greatest negative impact on educational achievements. (2) Domestic violence significantly reduces the self-assessed health level and life satisfaction and increases the subjective mental health risk. Based on the complexity and concealment of domestic violence, combined with empirical research conclusions, this paper proposes countermeasures to prevent and control domestic violence.
关键词：
Land management;Separation of ownership;Contract rights;And Operational rights;Agricultural advancement;New institutional economics
摘要：
The separation of ownership, contract rights, and operation rights within China’s land rights system marks a pivotal juncture in the nation’s agricultural and rural development. This research paper delves into the intricate dimensions of this transformation, emphasizing policy interpretations, legal aspects, and challenges in policy implementation. The study underscores the gap between policy intent and practical implementation, highlighting the complexities inherent in this separation of rights. Grounded in the principles of new institutional economics, the paper explores two central themes: the multifaceted nature of agricultural land, which serves both economic and social roles, and the historical evolution of the “disposition separately of three rights” concept aimed at optimizing land resource allocation. Normative standards rooted in new institutional economics provide a framework to evaluate the current land rights system, revealing issues in ownership, contract, and operation rights. The findings carry significant theoretical implications, shedding light on the complexities of land rights transformation and the growing importance of agricultural land's economic function. From a policy perspective, the research emphasizes the need for a balanced system that optimizes land use, supports collective and individual interests, and fosters economic growth in rural areas while protecting farmers’ rights. These insights provide valuable guidance for managers and policymakers involved in crafting and implementing land reform policies in China.
关键词：
Township health center;exploratory spatiotemporal data analysis;healthcare service capacity;quantile regression;unexpected output superefficiency SBM
摘要：
INTRODUCTION: This study analyzes the efficiency, spatiotemporal evolution, and influencing factors of provincial township health centers' healthcare service capacity in China. METHOD: It utilizes an unexpected output super-efficiency slacks-based measure (SBM) model, exploratory spatiotemporal data analysis methods, and a quantile regression model. RESULTS: The results show that the healthcare service capacity of township health centers is better in provinces with a larger proportion of hierarchical diagnoses and treatments pilot projects in cities, and the regional efficiency trend is ordered central > eastern > western > northeastern. The healthcare service capacity of provincial township health centers mainly shows significant spatial correlation and a spatiotemporal distribution pattern of "high agglomeration, low differentiation." DISCUSSION: Rural population density and per capita GDP significantly improve the healthcare service capacity of township health centers, while local governments' healthcare and health expenditure increases the healthcare service capacity of township health centers in certain quantiles. The urbanization rate and per capita disposable income inhibit the improvement of the healthcare service capacity of township health centers in certain quantiles. The provinces should accelerate the promotion of hierarchical diagnoses and treatment pilot projects in cities and establish national cooperative development models to promote public health.
通讯机构：
[Li, SS ] H;Hunan Agr Univ, Econ Coll, Changsha 410128, Peoples R China.
关键词：
COP27;Extracting resources;Financial risk;Sustainable development
摘要：
Developed economies, particularly the United States, are rapidly developing technology and resources to cut carbon emissions to combat climate change and fulfill the COP27 target. Even though the literature addresses most environmental challenges in developed and developing nations. Nonetheless, the United States remained ignored in identifying the influence of renewables, financial risk, and natural resources on environmental quality. Therefore, it is the need of the time to empirically examine such nexus, the empirical results of which could help policymakers construct relevant and appropriate policies. This research looks at the influence of natural resources, renewable energy consumption, financial risk, and economic development on carbon emissions in the United States between 1989 and 2021. The empirical data for variables demonstrate valid cointegration but have non-linear distributional features. As a result, this study uses the unique approach of moment quantile regression to discover that economic growth is the biggest impediment to meeting the COP27 objective. On the other hand, natural resource exploitation, renewable energy use, and financial risk are all negatively related to carbon emissions. According to the data, the latter factors are the primary drivers of COP27's objective accomplishment. This report recommends sustainable resource exploitation and more investment in the renewable energy industry.
通讯机构：
[Zhou, JZ ] U;Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA.;Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA.;Univ Oklahoma, Sch Civil Engn & Environm Sci, Norman, OK 73019 USA.;Univ Oklahoma, Sch Comp Sci, Norman, OK 73019 USA.
摘要：
The authors investigate the response of Archaea to experimental warming in a tallgrass prairie ecosystem. Warming was linked to reduced diversity and convergent succession, with further links to changed ecosystem function. Stochastic processes dominated community changes but decreased over time. Understanding the temporal succession of ecological communities and the underlying mechanisms in response to climate warming is critical for future climate projections. However, despite its fundamental importance in ecology and evolution, little is known about how the Archaea domain responds to warming. Here we showed that experimental warming of a tallgrass prairie ecosystem significantly altered the community structure of soil archaea and reduced their taxonomic and phylogenetic diversity. In contrast to previous observations in bacteria and fungi, we showed convergent succession of the soil archaeal community between warming and control. Although stochastic processes dominated the archaeal community, their relative importance decreased over time. Furthermore, the warming-induced changes in the archaeal community and soil chemistry had significant impacts on ecosystem functioning. Our results imply that, although the detrimental effects of biodiversity loss on ecosystems could be much severer, the soil archaeal community structure would be more predictable in a warmer world.
