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Repositioning fertilizer manufacturing subsidies for improving food security and reducing greenhouse gas emissions in China

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Journal of Integrative Agriculture 2024年第2期23卷 430-443页

作者： Zongyi Wu Xiaolong Feng Yumei Zhang Shenggen Fan Academy of Global Food economics and Policy China Agricultural UniversityBeijing 100083China coll.ge of economics and management China Agricultural UniversityBeijing 100083China

China removed fertilizer manufacturing subsidies from 2015 to 2018 to bolster market-oriented reforms and foster environmentally sustainable ***,the impact of this policy reform on food security and the environment remains inadequately ***,although green and low-carbon technologies offer environmental advantages,their widespread adoption is hindered by prohibitively high *** study analyzes the impact of removing fertilizer manufacturing subsidies and explores the potential feasibility of redirecting fertilizer manufacturing subsidies to invest in the diffusion of these *** the China Agricultural University Agri-food Systems model,we analyzed the potential for achieving mutually beneficial outcomes regarding food security and environmental *** findings indicate that removing fertilizer manufacturing subsidies has reduced greenhouse gas(GHG)emissions from agricultural activities by 3.88 million metric tons,with minimal impact on food *** fertilizer manufacturing subsidies to invest in green and low-carbon technologies,including slow and controlled-release fertilizer,organic-inorganic compound fertilizers,and machine deep placement of fertilizer,emerges as a strategy to concurrently curtail GHG emissions,ensure food security,and secure robust economic ***,we propose a comprehensive set of government interventions,including subsidies,field guidance,and improved extension systems,to promote the widespread adoption of these technologies.

关键词： food security fertilizer manufacturing subsidies agri-food systems greenhouse gas emissions

Financial and Capital Market Cooperation as the Next Growth Engine in China-Brazil economic Cooperation

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China Forex 2024年第3期 34-39页

作者： XIE Yizhe Paulo Capeleti SPX Capital management

The relationship between China and Brazil is among the most significant bilateral partnerships on the global stage,particularly within the framework of South-South Cooperation(SSC)amidst evolving world *** two nations are united by their substantial size,complementary economic structures,and shared aspirations for a multipolar world order,which has driven a robust surge in trade and investment *** these strong ties,however,capital market cooperation remains in its early stages,presenting a promising area for future growth in their bilateral relationship.

关键词： Engine Brazil spite

Spatial Differentiation and Convergence Trend of High-quality Development Level of China’s Tourism Economy

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Chinese Geographical Science 2024年第2期34卷 230-249页

作者： CAO Shanshan HE Zhaoli NIU Jinlan WANG Songmao ZHAO Lei School of Geography and Ocean Science Nanjing UniversityNanjing 210046China School of Business Administration Nanjing University of Finance and EconomicsNanjing 210046China School of economics and management Shandong Agricultural Uni-versityTai’an 271018China School of Hotel management Shanghai Business SchoolShanghai 201400China School of Man-agement Zhejiang University of TechnologyHangzhou 310014China

This paper aims to interpret the connotation of high-quality development of tourism economy(HQTE)from the perspective of the new development concepts of innovation,coordination,green,openness and sharing,and then to evaluate the spatial differenti-ation of China’s HQTE based on provincial panel data from 2009 to ***,we employ the spatial convergence model to ex-plore the absolute and conditionalβconvergence trends of HQTE in the whole country and the eastern,central and western regions of *** empirical results reveal that:1)within the decade,from 2009 to 2018,regions of China with the highest HQTE index is its eastern region followed by the central region and then the western region,but the fastest growing one is the western region of China fol-lowed by the central region and then the eastern region.2)Whether or not the spatial effect is included,there are absolute and condition-alβconvergence in HQTE in the whole country and aforementioned three regions.3)The degree of government attention as well as the level of economic development and location accessibility are the positive driving factors for the convergence of HQTE in the whole country and the three *** degree of marketization and human capital have not passed the significance test either in the whole country or in the three *** above conclusions could deepen the understanding of the regional imbalance and spatial conver-gence characteristics of HQTE,clarify the primary development objects,and accomplish the goal of China’s HQTE.

关键词： new development concepts high-quality development of tourism economy(HQTE) spatial convergence China

Damage effect analysis and experiment for electronic equipment in impact vibration environment

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Journal of Systems Engineering and Electronics 2009年第6期20卷 1384-1388页

作者： Shi Quan Tian Juan Man Qiang Dept. of management Engineering Shijiazhuang Mechanical Engineering Coll. Shijiazhuang 050003 P. R. China

This paper analyzes the electronic equipment＇s effect factors such as structure characteristics and *** radar equipment is taken as an experimental *** damage laws of electro-products in vibration environment are *** experiment shows that the damage of electro-products in vibration environment has relations with both the type and amplitude of vibration and their structure.

关键词： electro-product vibration environment damage effect.

Linking the utilization of mineral resources and climate change:A novel approach with frequency domain analysis

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Geoscience Frontiers 2024年第3期15卷 458-468页

作者： Kamel.Si Mohammed Ugur Korkut Pata Faculty of economics and management University of Ain TemouchentAlgeria Faculty of economics and Administrative Sciences Department of EconomicsOsmaniye Korkut Ata University80000 Merkez/OsmaniyeTurkey

Natural resources,climate change,and sustainable development are critical and simultaneously interrelated *** study investigates the interdependence between raw minerals material and sea level rise,considering the role of economic performance and material footprint employing wavelet locale multiple correlations from 1970 to *** results provide strong evidence for cross-correlation of climate change with mineral resources,economic output,and domestic material consumption(biomass-fossil,metal,and non-metal)localized at the high frequency-time ***,the outcomes provide weak evidence for the association between bivariate time series at low frequency,which is a limitation in the short *** on the results,policymakers should implement effective environmental taxes and invest in cutting-edge technologies to optimize clean energy and mineral resources in a sustainable manner.

关键词： Mineral resources Sea level rise Material footprint Wavelet multiple correlation

Stock Markets,Financial Depth,and economic Growth in China:Evidence from ARDLModel

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China Finance and economic Review 2024年第1期13卷 88-111页

作者： Afef Bouattour Maha Kalai Kamel Helali Higher Institute of Business Administration of Sfax University of Sfax Faculty of economics and management of Sfax University of Sfax

The relationship between financial development and economic growth in China is *** this perspective,this article aims to identify this relationship using both capital market and banking intermediation indicators,which were rarely considered in the previous *** autoregressive model with staggered lags(ARDL)examines the long-run cointegration relationship between 1980 and *** results suggest that the contribution of different subsectors of the Chinese financial system to economic growth *** development of the money market has a negative impact,whereas market capitalization has a positive impact on economic growth in *** the contribution of the banking system to China's economic growth,the two variables measuring the depth of financial institutions showed opposite impacts in both the short and long *** important policy implications,regulators need to ensure a pro-growth environment,effectively regulate the informal banking system,and prevent potential financial risks by revising policies.

关键词： stock markets financial depth economic growth China ARDL

Comparison on neural networks and support vector machines in suppliers' selection

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Journal of Systems Engineering and Electronics 2008年第2期19卷 316-320页

作者： Hu Guosheng1,2 & Zhang Guohong3 1. School of management, Guangdong Vocational coll. of Science and Technology, Guangzhou 510640, P. R. China 2. School of Computer and Information, Anqing Teacher coll., Anqing 246011, P. R. China 3. Adult Education coll., Guangzhou Univ., Guangzhou 510405, P. R. China School of management Guangdong Vocational Coll. of Science and Technology Guangzhou 510640 P. R. China School of Computer and Information Anqing Teacher Coll. Anqing 246011 P. R. China Adult Education coll. Guangzhou Univ. Guangzhou 510405 P. R. China

Suppliers＇ selection in supply chain management （SCM） has attracted considerable research interests in recent years. Recent literatures show that neural networks achieve better performance than traditional statistical methods. However, neural networks have inherent drawbacks, such as local optimization solution, lack generalization, and uncontrolled convergence. A relatively new machine learning technique, support vector machine （SVM）, which overcomes the drawbacks of neural networks, is introduced to provide a model with better explanatory power to select ideal supplier partners. Meanwhile, in practice, the suppliers＇ samples are very insufficient. SVMs are adaptive to deal with small samples＇ training and testing. The prediction accuracies for BPNN and SVM methods are compared to choose the appreciating suppliers. The actual examples illustrate that SVM methods are superior to BPNN.

关键词： supplier selection supply chain management logistics support vector machine BPNN.

Downstream Competition and Upstream Innovation:Theory and Evidence from China

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China Finance and economic Review 2024年第1期13卷 67-87页

作者： Jing Dai Guanchun Liu Ziqi Ye Haiou Mao Yongwei Ye School of Finance Hubei University of Economics Lingnan coll.ge Sun Yatsen University School of Business Administration Zhongnan University of Economics and Law coll.ge of economics and management Huazhong Agricultural University School of Public economics and management Shanghai University of Finance and Economics

Competition is the catalyst of corporate innovation,which is the foundation of a country's core *** the view of vertical industrial chain,this paper examines how downstream competition affects upstream firms'innovation *** innovation helps reduce the production cost of each product,increasing demand of intermediate products caused by downstream competition enhances the marginal revenue of upstream firms'innovation,thus leading to an innovation incentive *** identify causality,we utilize China's WTO accession,a quasinatural experiment,to calculate downstream competition combined with import tariff reduction and input-output table,and then run a difference-in-difference *** the data of Annual Survey of Industrial Firms and State Intellectual Property Office,our results find that downstream competition has a significantly positive impact on upstream firms'innovation,and this effect is more pronounced in firms with less industry competition,greater initial innovation capacity and weaker financial ***,the number of firms,the degree of industry competition and the scale of intermediate products in the downstream sector increase,confirming the market size *** sum,our findings document that downstream competition can motivate upstream firms to innovate through vertical industrial chain,providing some useful insights for China to build a fair market competition environment and promote innovation-driven growth regime.

关键词： downstream competition upstream firms'innovation vertical industrial chain market size effect

Access Pricing to An Operating System Platform when Piracy Matters

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Journal of Systems Science and Systems Engineering 2020年第2期29卷 184-202页

作者： Asma Brahem Khaireddine Jebsi Faculty of management and economic Sciences of Sousse University of SousseTunisia

This paper examines the impact of piracy on access pricing strategy of an operating system *** study the behavior of users and developers due to an increase in software protection when positive network externalities *** show that when piracy cost increases,access demands to the platform vary in the same direction and the magnitude of this variation depends on both the marginal network benefit that a developer derives and a certain threshold of piracy *** into account the behavior of these two sides when piracy matters,the monopoly platform changes its pricing *** show that,it tends to reduce or to increase access ***,we show that under certain conditions,the divide-and-conquer pricing strategy can be reversed.

关键词： Platform software developers piracy two-sided market single-homing