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半绝缘砷化镓表面光伏谱的三区分析 被引量:1
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作者 王松柏 《江西科学》 2005年第5期548-551,共4页
采用低温(21 K-300 K)稳态表面光伏实验方法,对腐蚀前后的半绝缘砷化镓(S i-GaAs)样品进行了大量的实验测量,发现其表面光伏谱可分为三个区域,并对三个区域的成因进行了合理的物理分析。
关键词 半绝缘GAAS 表面光伏谱 三个区域
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云南草产业发展“三域一体”的实践与探讨
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作者 王跃东 《云南畜牧兽医》 2014年第2期26-30,共5页
根据30年云南草业发展与实践的结果,为了研究、分析和表述上的方便,依据海拔等自然资源和草食畜牧业特点,把云南大致分为"高、中、低"三个区域。分析了各个区域自然资源禀赋的特点和草食畜牧业现状,提出今后云南草产业体系建... 根据30年云南草业发展与实践的结果,为了研究、分析和表述上的方便,依据海拔等自然资源和草食畜牧业特点,把云南大致分为"高、中、低"三个区域。分析了各个区域自然资源禀赋的特点和草食畜牧业现状,提出今后云南草产业体系建设思路和发展措施。 展开更多
关键词 草食畜牧业 三个区域 草产业体系
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关于《探究透镜成像规律》的教学建议
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作者 叶世文 《新课程》 2017年第11期123-123,共1页
“探究凸透镜的成像规律”是初中物理教学的难点,可以从生活中找资源、让学生真探究、安排好探究顺序、改进实验器材,以突破教学难点。
关键词 教学难点 生活资源 三个区域 探究顺序 器材改进
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Influences of Sense of Place on Farming Households' Relocation Willingness in Areas Threatened by Geological Disasters:Evidence from China 被引量:3
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作者 Dingde Xu Li Peng +3 位作者 Shaoquan Liu Chunjiang Su Xuxi Wang Tiantian Chen 《International Journal of Disaster Risk Science》 SCIE CSCD 2017年第1期16-32,共17页
Scholars from environmental psychology,geography, disaster science, and sociology have recently focused attention on evacuation and relocation behaviors and influencing factors in hazard-threatened areas. However, exi... Scholars from environmental psychology,geography, disaster science, and sociology have recently focused attention on evacuation and relocation behaviors and influencing factors in hazard-threatened areas. However, existing studies are mainly focused on developed countries and the influence of individual characteristics,household characteristics, and the perception of risk of urban households on evacuation and relocation behaviors.Few studies examine developing countries and the influence of farmers' sense of place in geological hazardthreatened areas. Using statistics of farming households in an area threatened by landslides, this is a pilot study to explore the relationship of sense of place to the relocation willingness of farming households while controlling for other variables. The results show that:(1) Households with higher scores of place identity and place dependence are less willing to relocate, whereas place attachment has no significant relationship to household relocation willingness;(2) Risk perception dimensions, including probability,threat, and controllability have a significant relationship to household relocation willingness, while worry and fear of the unknown have no significant relationship;(3) Household characteristics, including income, whether a household has experienced economic loss from landslides, and social support are significantly correlated with household relocation willingness, while gender, age, experience, distance to hazard sites, size of household, children, older people, and housing material are not. The results for information and education are not robust. This study contributes to the current literature by improving the understanding of the relationship of sense of place to the relocation willingness of farming households in villages threatened by geological disasters in rural China. 展开更多
关键词 China Farming households Relocation willingness Risk perception Sense of place Three Gorges Reservoir area
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