学科领域内的核心作者群极大地影响着学科的发展方向及发展速度,其成熟度是衡量学科发展是否成熟的重要指标。近年来知识发现成为信息资源管理的热点问题,为探究国际知识发现研究领域核心作者群的成熟度,本文以Web of Science平台SSCI和...学科领域内的核心作者群极大地影响着学科的发展方向及发展速度,其成熟度是衡量学科发展是否成熟的重要指标。近年来知识发现成为信息资源管理的热点问题,为探究国际知识发现研究领域核心作者群的成熟度,本文以Web of Science平台SSCI和SCI数据库1993-2014年知识发现研究领域内的2 723篇文献为研究对象,在运用普赖斯定律对核心作者群进行初步筛选的基础上,选用作者发文量与作品被引率的双重指标构建了综合指数评价体系最终确定377位核心作者,并对形成的核心作者群网络进行结构成熟度、网络关联成熟度分析。研究结果显示,国际知识发现研究领域已经培育了一支强大的核心作者队伍,但部分核心作者发文量与被引率之间存在错位现象,此外研究的国别发展不均衡现象较为严重。展开更多
针对风城油田八道湾组J 1 b2+3层储层沉积类型的问题,本文研究了利用储层沉积标志和砂体特征等手段确定了八道湾组J1 b 2+3层储层为细粒辫状河沉积。研究发现:风城油田八道湾组J1 b 2+3层储层岩性以中细砂岩为主;储层顶部普遍发育煤层,...针对风城油田八道湾组J 1 b2+3层储层沉积类型的问题,本文研究了利用储层沉积标志和砂体特征等手段确定了八道湾组J1 b 2+3层储层为细粒辫状河沉积。研究发现:风城油田八道湾组J1 b 2+3层储层岩性以中细砂岩为主;储层顶部普遍发育煤层,煤的主要组分以高等植物为主,显示该层的形成环境为潮湿环境下的水上沉积;储层结构成熟度和成分成熟度较低属近物源沉积;粒度分析资料显示该层形成环境以强水动力条件下的环境为主;取芯资料显示该层以块状层理和平行层理为主,小型层理较少,显示为高能的水动力条件。综合以上沉积特征发现,风城油田八道湾组J1b 2+3层储层沉积相为细粒辫状河相。针对储层岩性细的问题,详细对比了目的储层薄片特征,发现该层储层岩屑为变沉积岩岩屑为主,石英颗粒表面普遍存在粗糙和微裂隙发育的现象,说明储层母岩为变质岩。展开更多
In order to understand the impact of demographic structure on paddy and forestland managementafter the convening of the Third Plenary Session of the 11th CPC (Communist Party of China) CentralCommittee and the impleme...In order to understand the impact of demographic structure on paddy and forestland managementafter the convening of the Third Plenary Session of the 11th CPC (Communist Party of China) CentralCommittee and the implementation of the Household Responsibility System (the government divided upland among peasants for cultivating and the peasants sell a set part of their produced goods to thegovernment at stipulated prices by contract in the countryside of China), 147 households in 6 villages,belonging to Xiangtan County and Zhuzhou County in Hunan Province, were selected as research samples,and interview, questionnaire survey and second hand data analyzing were used as the methods. The resultsshowed: Persons with different ages had different ideas, and young peasants would like to work in townsor cities for more income, so they used and depended on land less; In terms of sex, the male was still themain user of land, and therefore the ability, idea and activity of male played an important role in landmanagement; Generally, the labors with better educational background grasped more knowledge andtechnologies, and they had more opportunity to get jobs and had better working condition and moreincome in town or cities, so they depended on and used land less.展开更多
文摘学科领域内的核心作者群极大地影响着学科的发展方向及发展速度,其成熟度是衡量学科发展是否成熟的重要指标。近年来知识发现成为信息资源管理的热点问题,为探究国际知识发现研究领域核心作者群的成熟度,本文以Web of Science平台SSCI和SCI数据库1993-2014年知识发现研究领域内的2 723篇文献为研究对象,在运用普赖斯定律对核心作者群进行初步筛选的基础上,选用作者发文量与作品被引率的双重指标构建了综合指数评价体系最终确定377位核心作者,并对形成的核心作者群网络进行结构成熟度、网络关联成熟度分析。研究结果显示,国际知识发现研究领域已经培育了一支强大的核心作者队伍,但部分核心作者发文量与被引率之间存在错位现象,此外研究的国别发展不均衡现象较为严重。
文摘针对风城油田八道湾组J 1 b2+3层储层沉积类型的问题,本文研究了利用储层沉积标志和砂体特征等手段确定了八道湾组J1 b 2+3层储层为细粒辫状河沉积。研究发现:风城油田八道湾组J1 b 2+3层储层岩性以中细砂岩为主;储层顶部普遍发育煤层,煤的主要组分以高等植物为主,显示该层的形成环境为潮湿环境下的水上沉积;储层结构成熟度和成分成熟度较低属近物源沉积;粒度分析资料显示该层形成环境以强水动力条件下的环境为主;取芯资料显示该层以块状层理和平行层理为主,小型层理较少,显示为高能的水动力条件。综合以上沉积特征发现,风城油田八道湾组J1b 2+3层储层沉积相为细粒辫状河相。针对储层岩性细的问题,详细对比了目的储层薄片特征,发现该层储层岩屑为变沉积岩岩屑为主,石英颗粒表面普遍存在粗糙和微裂隙发育的现象,说明储层母岩为变质岩。
文摘In order to understand the impact of demographic structure on paddy and forestland managementafter the convening of the Third Plenary Session of the 11th CPC (Communist Party of China) CentralCommittee and the implementation of the Household Responsibility System (the government divided upland among peasants for cultivating and the peasants sell a set part of their produced goods to thegovernment at stipulated prices by contract in the countryside of China), 147 households in 6 villages,belonging to Xiangtan County and Zhuzhou County in Hunan Province, were selected as research samples,and interview, questionnaire survey and second hand data analyzing were used as the methods. The resultsshowed: Persons with different ages had different ideas, and young peasants would like to work in townsor cities for more income, so they used and depended on land less; In terms of sex, the male was still themain user of land, and therefore the ability, idea and activity of male played an important role in landmanagement; Generally, the labors with better educational background grasped more knowledge andtechnologies, and they had more opportunity to get jobs and had better working condition and moreincome in town or cities, so they depended on and used land less.
