Though prior research has identified that gratitude is associated with benign/malicious envy(BeMaS).The pur-pose of this study was to explore the causal relationship between gratitude and BeMaS among Chinese adoles-cen...Though prior research has identified that gratitude is associated with benign/malicious envy(BeMaS).The pur-pose of this study was to explore the causal relationship between gratitude and BeMaS among Chinese adoles-cents.The two-wave study,in which 906 adolescents participated,includes measurements of gratitude and BeMaS.We employed the structural equation models to test the cross-lagged effect between trait gratitude and BeMaS.The results showed that gratitude could positively predict benign envy and could negatively predict mal-icious envy.Besides,there was no evidence for the reverse or reciprocal relationships between gratitude and BeMaS.Thefindings provide further evidence about the causal relationship between gratitude and BeMaS among adolescents.Moreover,these results have implications for gratitude interventions that promote the constructive meaning of envy and reduce the negative influence of envy.展开更多
Coastal zones are dynamic interfaces responding to complex natural processes and anthropogenic pressures.Monitoring shoreline evolution is essential for sustainable coastal management,particularly given climate change...Coastal zones are dynamic interfaces responding to complex natural processes and anthropogenic pressures.Monitoring shoreline evolution is essential for sustainable coastal management,particularly given climate change,urban expansion,and sediment flux disruption.This study investigates shoreline changes along Morocco’s northern Atlantic coast from 1990 to 2023,an area of strategic economic importance and environmental vulnerability.Landsat satellite imagery and geospatial techniques,including the Digital Shoreline Analysis System(DSAS v5.1)and the Normalized Difference Water Index(NDWI),provided a high-resolution,diachronic assessment.Shoreline extraction and image enhancement were conducted with ENVI software,and change detection utilized Linear Regression Rate(LRR)and End Point Rate(EPR)indicators.Results revealed significant spatial variability:sectors like northern Moulay Bousselham and Chlihat showed pronounced accretion(+3.2 to+4.7 m/year),while areas such as Tahaddart and southern Mehdia experienced severe erosion(up to−3.4 m/year).The total net eroded area exceeds 58,000 m².Trends correlate strongly with hydrodynamic forces,upstream damming,sediment extraction,and extreme weather events,notably storms in 2014 and 2017.Findings align with studies highlighting compounded effects of sediment starvation and sea-level rise.By integrating remote sensing,time-series analysis,and uncertainty quantification,this research provides insights into the primary drivers of shoreline dynamics,emphasizing the urgent need for adaptive,evidence-based coastal management strategies,including regulation of sand mining,sediment buffer restoration,and soft-engineering solutions.展开更多
盗滥伐林木是对林木资源无休止地破坏蚕食,后果十分严重.由于盗滥伐人员一般把地点选在偏远林地,时间选在凌晨或傍晚,受客观条件限制,这类案件很多情况下很难及时发现.传统的侦查方式是在案件发生后收集线索、调查取证,采用的是事后追查...盗滥伐林木是对林木资源无休止地破坏蚕食,后果十分严重.由于盗滥伐人员一般把地点选在偏远林地,时间选在凌晨或傍晚,受客观条件限制,这类案件很多情况下很难及时发现.传统的侦查方式是在案件发生后收集线索、调查取证,采用的是事后追查,比较被动,打击具有局限性.如何改变传统侦查模式,在盗滥伐林木的过程中,一旦发现超范围、超数量盗滥伐林木便立即报告,在违法行为发生后构成犯罪前予以制止值得研究.针对这一问题,提出基于图像可视化环境(The Environment for Visualizing Images,ENVI)遥感数据检测分析方法,旨在准确高效地提取出监控区域植被覆盖度动态变化,促成传统侦查模式向智慧侦查模式转型,为预警盗滥伐林木犯罪提供智能追踪.展开更多
MODIS数据具有高时相分辨率、高光谱分辨率和中等地面分辨率的特征,利用MODIS数据来监测和提取旱情严重地区的水体信息已经成为一个重要的研究方向.本文利用各类地物在MODIS各个波段上的波谱特征差异性进行水体提取,但与以往水体信息提...MODIS数据具有高时相分辨率、高光谱分辨率和中等地面分辨率的特征,利用MODIS数据来监测和提取旱情严重地区的水体信息已经成为一个重要的研究方向.本文利用各类地物在MODIS各个波段上的波谱特征差异性进行水体提取,但与以往水体信息提取方法有创新之处在于:本文借助于非线性的指数函数对低反射的水体的反射率进行了拉伸而对高反射的非水体地物的反射率进行了压缩,从而提高了水体在短波红外上的反射率而抑制了非水体在红波段上的反射率,通过波段间的归一化处理进而构建出EXPWI(EXP Water Index)方法 .为了更进一步地提高水体信息提取的自动化程度,本文用ENVI/IDL编写了EXPWI模型.研究表明利用IDL编写的EXPWI法快速实现了中等分辨率遥感影像中水体信息的自动提取,能有效的抑制背景地物的干扰而清晰的识别出湖泊、河道和地表的微弱水体信息,而且能有效降低云对水体信息提取的干扰,更重要的是在抑制大气噪音对提取结果的干扰方面,EXPWI法的效果很好.展开更多
基金supported by Department of Education Project of Hunan Province of China(Grant No.2019291174).
文摘Though prior research has identified that gratitude is associated with benign/malicious envy(BeMaS).The pur-pose of this study was to explore the causal relationship between gratitude and BeMaS among Chinese adoles-cents.The two-wave study,in which 906 adolescents participated,includes measurements of gratitude and BeMaS.We employed the structural equation models to test the cross-lagged effect between trait gratitude and BeMaS.The results showed that gratitude could positively predict benign envy and could negatively predict mal-icious envy.Besides,there was no evidence for the reverse or reciprocal relationships between gratitude and BeMaS.Thefindings provide further evidence about the causal relationship between gratitude and BeMaS among adolescents.Moreover,these results have implications for gratitude interventions that promote the constructive meaning of envy and reduce the negative influence of envy.
文摘Coastal zones are dynamic interfaces responding to complex natural processes and anthropogenic pressures.Monitoring shoreline evolution is essential for sustainable coastal management,particularly given climate change,urban expansion,and sediment flux disruption.This study investigates shoreline changes along Morocco’s northern Atlantic coast from 1990 to 2023,an area of strategic economic importance and environmental vulnerability.Landsat satellite imagery and geospatial techniques,including the Digital Shoreline Analysis System(DSAS v5.1)and the Normalized Difference Water Index(NDWI),provided a high-resolution,diachronic assessment.Shoreline extraction and image enhancement were conducted with ENVI software,and change detection utilized Linear Regression Rate(LRR)and End Point Rate(EPR)indicators.Results revealed significant spatial variability:sectors like northern Moulay Bousselham and Chlihat showed pronounced accretion(+3.2 to+4.7 m/year),while areas such as Tahaddart and southern Mehdia experienced severe erosion(up to−3.4 m/year).The total net eroded area exceeds 58,000 m².Trends correlate strongly with hydrodynamic forces,upstream damming,sediment extraction,and extreme weather events,notably storms in 2014 and 2017.Findings align with studies highlighting compounded effects of sediment starvation and sea-level rise.By integrating remote sensing,time-series analysis,and uncertainty quantification,this research provides insights into the primary drivers of shoreline dynamics,emphasizing the urgent need for adaptive,evidence-based coastal management strategies,including regulation of sand mining,sediment buffer restoration,and soft-engineering solutions.
文摘盗滥伐林木是对林木资源无休止地破坏蚕食,后果十分严重.由于盗滥伐人员一般把地点选在偏远林地,时间选在凌晨或傍晚,受客观条件限制,这类案件很多情况下很难及时发现.传统的侦查方式是在案件发生后收集线索、调查取证,采用的是事后追查,比较被动,打击具有局限性.如何改变传统侦查模式,在盗滥伐林木的过程中,一旦发现超范围、超数量盗滥伐林木便立即报告,在违法行为发生后构成犯罪前予以制止值得研究.针对这一问题,提出基于图像可视化环境(The Environment for Visualizing Images,ENVI)遥感数据检测分析方法,旨在准确高效地提取出监控区域植被覆盖度动态变化,促成传统侦查模式向智慧侦查模式转型,为预警盗滥伐林木犯罪提供智能追踪.
文摘MODIS数据具有高时相分辨率、高光谱分辨率和中等地面分辨率的特征,利用MODIS数据来监测和提取旱情严重地区的水体信息已经成为一个重要的研究方向.本文利用各类地物在MODIS各个波段上的波谱特征差异性进行水体提取,但与以往水体信息提取方法有创新之处在于:本文借助于非线性的指数函数对低反射的水体的反射率进行了拉伸而对高反射的非水体地物的反射率进行了压缩,从而提高了水体在短波红外上的反射率而抑制了非水体在红波段上的反射率,通过波段间的归一化处理进而构建出EXPWI(EXP Water Index)方法 .为了更进一步地提高水体信息提取的自动化程度,本文用ENVI/IDL编写了EXPWI模型.研究表明利用IDL编写的EXPWI法快速实现了中等分辨率遥感影像中水体信息的自动提取,能有效的抑制背景地物的干扰而清晰的识别出湖泊、河道和地表的微弱水体信息,而且能有效降低云对水体信息提取的干扰,更重要的是在抑制大气噪音对提取结果的干扰方面,EXPWI法的效果很好.
