The Effect of R&D Input on Operating Income of Chinese Wastewater Treatment Companies—With Patent Performance as a Mediating Variable

Water, Journal Year: 2022, Volume and Issue: 14(6), P. 836 - 836

Published: March 8, 2022

The Chinese government is actively promoting green and low-carbon transformation for economic social development, especially in the wastewater treatment industry. This article uses regression analysis to study impact of company R&D input on patent performance operating income different regulatory environments regions. Companies industries Shanghai Shenzhen stock exchanges from 2013 2020 are selected as research samples. results show that there a partial mediating effect between income; stimulative strongest high external-high internal environment; this also more significant three strategic regions when compared with other findings suggest can promote income. Thus, enterprises should establish complete systems improve their innovative output capabilities. Enterprises developed play leading role undertaking technological innovation. Furthermore, formulate policies capacity companies conduct continue down road development.

Language: Английский

---

Spatial planning-constrained modeling of urban growth in the Yangtze River Delta considering the element flows

GIScience & Remote Sensing, Journal Year: 2022, Volume and Issue: 59(1), P. 1491 - 1508

Published: Sept. 20, 2022

Urban growth models that consider spatial control and factor flows are important for the integrated management of urban agglomerations, to date, no simulation method has been available both thoroughly. We proposed a new cellular automaton (CAGBDT) model based on gradient boosting decision trees (GBDT) simulate in Yangtze River Delta (YRD) area China. In this model, GBDT was used retrieve land transition rules by integrating multiple weak learners feature expansion approach employed remove high correlations among drivers then expand features. applied final pattern as dependent variable selected nine independent variables YRD. The results show overall accuracies exceeded 89% figure-of-merits (FOMs) 27%, about 10% higher than other similar simulations YRD, indicating strong ability CAGBDT Although inclusion inter-city material information element improves accuracy only 1%, it reveals different development patterns Hangzhou Bay south YRD Taihu Lake basin center By considering scenarios under strategies control, shows simulated FOMs declined 5% with stronger enforcement regulations, reflecting actual fully non-developable areas 20% partly developable already violated regulations. can help planners local authorities develop solutions high-quality agglomeration. is applicable diagnose land-use change elsewhere, especially rapidly developing cities need balancing ecological protection.

Language: Английский

---

Improvement Pathways for Urban Land Use Efficiency in the Beijing-Tianjin-Hebei Urban Agglomeration at the County Level: A Context-Dependent DEA Based on the Closest Target

International Journal of Environmental Research and Public Health, Journal Year: 2023, Volume and Issue: 20(5), P. 4429 - 4429

Published: March 1, 2023

One of the most effective ways to achieve sustainable land use and regional coordinated development urban agglomerations lies in improving efficiency (ULUE) both large, medium, small cities towns. However, previous studies, less attention has been paid pathways for potential improvement, especially at county level. The main purpose this paper is examine improvement paths ULUE level agglomerations, while attempting provide more practical targets formulate reasonable steps inefficient counties. Therefore, a total 197 counties Beijing-Tianjin-Hebei agglomeration (BTHUA) 2018 were taken as examples build context-dependent data envelopment analysis (DEA) model based on closest target. In addition, by utilizing methods such significant difference test system clustering analysis, shortest path identified counties, characteristics different levels summarized. Furthermore, compared two dimensions: administrative type region. results showed that causes polarization mainly reflected complex be improved middle- low-level than high levels. Improving environmental social benefits was essential achieving middle low between types, well prefecture-level cities, heterogeneous. study can policy planning basis use. This significance accelerating urbanization promotion coordination development.

Language: Английский

---

Evaluating Whether Farmland Consolidation Is a Feasible Way to Achieve a Balance of Potential Crop Production in Southeastern Coastal China

Land, Journal Year: 2022, Volume and Issue: 11(11), P. 1918 - 1918

Published: Oct. 28, 2022

The requisition–compensation balance of farmland (RCBF) policy proposes that all requisitioned for development must be compensated with new farmland, which the continued implementation in economically developed counties China faces great challenges. extent to a potential crop production can achieved merely through consolidation has important theoretical and practical significance. This study measurement procedures investigate this degree takes seven southeastern coastal as examples on conduct an empirical study. results show following: (1) there is significant negative correlation between GDP index each county, is, more lower achieve balance; (2) increase elevation, possibility increasing shows inverted U-shaped curve, maximum values occurring at elevations 50 500 m attention should paid elevation when implementing projects; (3) although it difficult strike consolidation, compensate loss from requisition great, reaching than 40%, plays role realizing production; (4) difference adequate RCBF adjustment. Therefore, proposed approach illustrated clearly reveals relationship compensation by implications adjustment China.

Language: Английский

---