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人口老龄化对碳排放绩效的影响效应研究

科学决策 2024年第2期 93-104页

作者：王丽霞王艺兰雅新张佳瑛山西财经大学公共管理学院山西财经大学财政与公共经济学院山西财经大学资源环境学院

基于全国30省2011—2020年面板数据测度碳排放绩效,并构建门槛效应模型探究人口老龄化与碳排放绩效的关系,并通过PSM-DID稳健性检验以增强门槛效应结果可信度。实证结果表明:(1)人口老龄化对碳排放绩效有正向影响,且存在门槛效应;(2)城... 详细信息

基于全国30省2011—2020年面板数据测度碳排放绩效,并构建门槛效应模型探究人口老龄化与碳排放绩效的关系,并通过PSM-DID稳健性检验以增强门槛效应结果可信度。实证结果表明:(1)人口老龄化对碳排放绩效有正向影响,且存在门槛效应;(2)城镇化率作为门槛变量,发现其存在单门槛效应,并跨越门槛值后促进效应显著增加;(3)东部地区人口老龄化对碳排放绩效产生正向作用,而中西部地区人口老龄化对碳排放绩效具有抑制作用。

关键词：老龄化碳排放绩效非期望超效率SBM模型门槛效应模型

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高兹对异化消费的批判和克服

唐山师范学院学报 2024年第2期46卷 95-98,121页

作者：白兴张嘉莹河北师范大学马克思主义学院河北石家庄050024

安德烈·高兹对资本主义社会中的异化消费现象进行了深刻批判。他认为,经济理性的主导、异化劳动的痛苦和商业宣传的虚假导致了异化消费的产生。这不仅带来了自然生态危机,还加剧了人自身的异化程度以及人与人之间的矛盾。他主张用生态... 详细信息

安德烈·高兹对资本主义社会中的异化消费现象进行了深刻批判。他认为,经济理性的主导、异化劳动的痛苦和商业宣传的虚假导致了异化消费的产生。这不仅带来了自然生态危机,还加剧了人自身的异化程度以及人与人之间的矛盾。他主张用生态理性来取代经济理性,重建“更少”与“更好”之间的联系;减少工作时间,限制过度消费;消灭异化劳动,从而摆脱异化消费。

关键词：高兹异化消费经济理性

Diagenesis and Its Effect on Reservoir Quality of Silurian Sandstones,Tabei Area,Tarim Basin,China

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Petroleum Science 2007年第3期4卷 1-13页

作者： zhang Jinliang jia ying Du Guilin School of Geosciences Ocean University of China Qingdao Shandong 266003 China

The diagenetic processes of the Tabei sandstones in the Tarim Basin include compaction, cementation （quartz overgrowths, calcite, clay minerals and a minor amount of pyrite）, and dissolution of the feldspar and calcite cement. Porosity was reduced by compaction from an assumed original 40% to about 22.1%. Cementation reduced porosity to 26.6%. The Tabei sandstones lost a little more porosity by compaction than by cementation. Quartz cementation, especially syntaxial quartz overgrowth, is a major cause of porosity-loss in many reservoirs in moderately to deeply buried sandstone. Calcite cementation played a key role in the porosity evolution of sandstones. At the early stage of burial, the early calcite cement occupied most of the pore spaces resulting in significant porosity. On the other hand, some primary porosity has been preserved due to incomplete filling or the presence of scattered patches of calcite cement. In addition to calcite, several clay minerals, including illite and chlorite occurred as pore-filling and pore-lining cements. The pore-lining chlorite may have helped in retaining the porosity by preventing the precipitation of syntaxial quartz overgrowths. Illite, which largely occurred as hair-like rims around the grains and bridges on the pore throats, caused a substantial deterioration of penetrability of the reservoir. Calcite cement dissolution was extensive and contributed significantly to the development of secondary porosity.

关键词： Tarim Basin diagenesis secondary pore reservoir quality

基于KAP理论的跟踪式指导在眼睑美容整形术后的作用探讨

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中国医疗美容 2024年第2期14卷 89-93页

作者：张嘉莹严芳张祯王江允郑州市第三人民医院整形美容科河南郑州450000

目的探讨基于知识-信念-行为(KAP)理论的跟踪式指导在眼睑美容整形术后的作用。方法随机抽样法选取2021年1月~2023年1月本院106例行眼睑美容整形手术的患者,分为对照组与研究组,各53例。对照组术后行常规随访护理,研究组术后行基于KAP... 详细信息

目的探讨基于知识-信念-行为(KAP)理论的跟踪式指导在眼睑美容整形术后的作用。方法随机抽样法选取2021年1月~2023年1月本院106例行眼睑美容整形手术的患者,分为对照组与研究组,各53例。对照组术后行常规随访护理,研究组术后行基于KAP理论的跟踪式指导。比较两组干预前后焦虑自评量表(SAS)、抑郁自评量表(SDS)、一般自我效能感量表(GSES)及自我护理能力量表(ESCA)评分,统计两组术后并发症发生情况。结果干预后,研究组SAS、SDS评分低于干预前及对照组(P<0.05);研究组GSES、ESCA评分高于干预前及对照组(P<0.05);研究组术后并发症发生率为3.85%,低于对照组的21.15%(P<0.05)。结论眼睑美容整形术后实施基于KAP理论的跟踪式指导可改善患者情绪状况、自我效能感及自我护理能力,减少术后并发症。

关键词：眼睑美容整形术知识-态度-行为理论并发症

New method for multibody dynamics based on unknown constraint force

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Science China(Technological Sciences) 2024年第3期67卷 791-808页

作者： TIAN ying jia yingHong zhang Jun School of Astronautics Beihang UniversityBeijing 100191China Beijing Institute of Control Engineering Beijing 100190China National Laboratory of Space Intelligent Control Beijing 100190China

This paper presents a new method for the dynamics of multibody systems based on unknown constraint force. The method can uniformly solve multibody systems with typical configurations, including the system with rigid-flexible coupling, the system in tree topology, and the system with loop constraints. Unlike common methods, the proposed method can model the loop system without “cutting off” loop constraints, leading to the exact same modelling process as the tree-like system performs. Based on graph theory, a topological record matrix M_(rec) is proposed to capture the arbitrary system configuration. Moreover, constraint forces are selected as the key variables in semi-recursive framework. With the recursive kinematics relationship between adjacent bodies, the constraint force equation is further assembled to achieve the full-state system solution. The numerical simulations demonstrate the accuracy of the proposed method.

关键词： multibody system dynamic modelling rigid-flexible coupling unknown constraint force graph theory semi-recursive algorithm

Effect of the Grain for Green Project on freshwater ecosystem services under drought stress

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Journal of Mountain Science 2022年第4期19卷 974-986页

作者： HAN Hui-qing YANG jian-qiang LIU Yue zhang ying-jia WANG Jun-wen College of Architecture and Urban Planning Guizhou Institute of TechnologyGuiyang 550003China College of Economics and Management Guizhou Institute of TechnologyGuiyang 550003China

The Grain for Green Project(GGP) is an important measure for the prevention of sloping farmland and the restoration of natural *** project has been critical to the restoration of ecological environments in western China. However,the effect of the GGP on freshwater ecosystem services under extreme climates remains unclear. Thus, taking the middle and upper reaches of the Wujiang River Basin in western China as an example, this study assessed the variation of three freshwater ecosystem services(e.g., water yield, soil retention and nutrient retention) impacted by the GGP under drought stress by employing the Integrated Valuation of Ecosystem Services and Tradeoffs(In VEST) model. In addition,the trade-off/synergistic relationship between three freshwater ecosystem services was analyzed based on the Pearson correlation coefficient. As revealed from the results, the effect of the GGP on the water yield and nutrient retention under drought stress was significantly higher than that on the soil *** the increase in the drought degree, the variation rate of the water yield and nutrient retention impacted by the GGP increased, whereas that of the soil retention decreased. The GGP in droughts of different seasons resulted in a significant heterogeneity in the changes of three freshwater ecosystem services. The correlation coefficients between the water yield and soil retention as well as that between the water yield and the nutrient retention increased, and the correlation coefficients declined between soil and nutrient retention under different drought degrees following the GGP. Unlike for the summer drought case, there were no significant changes in the correlation coefficients between three freshwater ecosystem services in spring, autumn and winter droughts. The results suggest that the amount of farmland converted to shrubland should be regulated to reduce the trade-off intensity between freshwater ecosystem services. In addition, food security and e

关键词： Grain for Green Project Freshwater ecosystem services Drought Spatial pattern Tradeoff and synergy

Enhanced photocatalytic performance by regulating the Ce^(3+)/Ce^(4+)ratio in cerium dioxide

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Frontiers of Chemical Science and Engineering 2024年第3期18卷 75-87页

作者： Zhi Li Dongsheng jia Wei zhang ying Li Mitang Wang Dongliang zhang School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai200093China

Cerium dioxide(CeO_(2))photocatalysts are used in treating environmental pollution and addressing the energy crisis due to their excellent oxygen storage capacities and abundant oxygen *** this paper,CeO_(2)precursors were synthesized with different water-alcohol ratios via a solvothermal method,and CeO_(2)photocatalysts with different Ce^(3+)/Ce^(4+)ratios were obtained by changing the precursor calcination atmospheres(air,Ar)as well as the calcination *** effects of CeO_(2)with different Ce^(3+)/Ce^(4+)ratios in photocatalytic degradations of methylene blue under visible light were investigated.X-ray photoelectron spectroscopy results showed that the surfaces of the samples calcined under Ar had higher Ce^(3+)/Ce^(4+)ratios and oxygen vacancy concentrations,which reduced the band gaps of the catalysts and improved their utilization of visible *** addition,the many Ce^(3+)/Ce^(4+)redox centers and oxygen vacancies on the sample surfaces improved the separation and transfer efficiencies of the photogenerated *** sample C2-Ar calcined under Ar showed a high adsorption capacity and excellent photocatalytic activity by removing 96%of the methylene blue within 120 min,which was more than twice the degradation rate of the sample(C2-air)prepared via calcination under *** experiments showed that photogenerated holes played a key role in the photocatalytic *** addition,a synergistic photocatalytic mechanism for the Ce^(3+)/Ce^(4+)redox centers and oxygen vacancies was elucidated in detail,and the sensitization of cerium dioxide by dyes aided the degradation of methylene blue.

关键词： CeO_(2) oxygen vacancies Ce^(3+)/Ce^(4+)ratios photocatalytic dye-sensitization

Tradeoffs and synergies between ecosystem services : A comparison of the karst and non-karst area

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Journal of Mountain Science 2020年第5期17卷 1221-1234页

作者： HAN Hui-qing LIU Yue GAO Hong-juan zhang ying-jia WANG Zhe CHEN Xiao-qiao College of Architecture and Urban Planning Guizhou Institute of TechnologyGuiyang 550003China School of Geography and Resources Guizhou Education UniversityGuiyang 550018China

Under the influence of various natural and human factors, the relationship between the ecosystem services provided for human beings by a karst ecosystem is becoming increasingly complex, profoundly limiting the effective and sustainable development of the social economy and ecosystem protection in karst areas. Taking Guizhou, China as an example, which includes both karst(including five different landforms) and non-karst area, the study explored and compared the tradeoff and synergy between ecosystem services in both terrain types. The results showed higher change rates of water yield and soil retention in karst areas than those in non-karst areas, with only small differences in the carbon storage and crop production change. The ecosystem service relationships in the karst area from 1995 to 2005 were consistent with the relationships in the non-karst area. However, differences were observed in most of these relationships from 2005 to 2015. The relationships between ecosystem services in different karst landforms from 1995 to 2005 remained the same, but there are differences found in the relationships of ecosystem services from 2005 to 2015. The trade-off and synergistic relationships between ecosystem services in the different landforms were closely related to the changes of climate and land use, particularly related to rainfall, rainfall erosivity, farmland, and forestland.

关键词： Ecosystem service Tradeoff and synergy Spatial pattern Karst area Guizhou

基于灰水足迹视角的黄河流域农业绿色发展效率时空分异特征研究

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环境生态学 2024年第9期6卷 91-99页

作者：褚子昂张家瑛那晓红尤晨馨河海大学商学院江苏常州213022

黄河流域是我国重要的生态屏障和重要的经济地带,深入研究农业绿色发展效率时空特征及影响因素对于贯彻落实黄河流域生态保护和高质量发展的国家战略具有较强的现实意义。本研究旨在系统性地分析黄河流域农业绿色发展效率的时空特征及... 详细信息

黄河流域是我国重要的生态屏障和重要的经济地带,深入研究农业绿色发展效率时空特征及影响因素对于贯彻落实黄河流域生态保护和高质量发展的国家战略具有较强的现实意义。本研究旨在系统性地分析黄河流域农业绿色发展效率的时空特征及其影响因素,以期为实现生态保护和高质量发展的国家战略提供科学依据和政策建议。本研究从灰水足迹的视角出发,基于黄河流域2000—2020年9省(区)的面板数据,以超效率SBM模型和莫兰指数等方法为基础,对其农业绿色发展效率测度值与空间相关性进行分析,并进一步建立地理加权回归模型(GWR)探究影响因素及其空间异质性。结果表明:黄河流域农业绿色发展效率的整体趋势向好,但在不同地区之间存在显著差异,其在研究期内存在明显的空间负相关,并随时间推移,黄河流域9省(区)总体由分散向低低聚集区域偏移。在6种影响因素中,教育投入、技术进步以及经济发展水平产生正向驱动作用,而地区人口、经济结构以及城镇化水平对发展效率产生负向影响。

关键词：黄河流域农业绿色发展效率超效率SBM 莫兰指数地理加权回归