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WCDMA邻区配置合理性评估方法研究
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作者 贺晓伟 曹晓冬 叶青 《邮电设计技术》 2016年第3期79-82,共4页
从网络邻区特性的不同角度出发,通过邻区质量、邻区距离、小区接入距离等,对邻区配置的合理性提出了一种综合评估方法。结合工程经验,对每一个邻区给出了配置合理性的评估结论,并给出了实际参考案例。可以作为网络维护中邻区优化的参考... 从网络邻区特性的不同角度出发,通过邻区质量、邻区距离、小区接入距离等,对邻区配置的合理性提出了一种综合评估方法。结合工程经验,对每一个邻区给出了配置合理性的评估结论,并给出了实际参考案例。可以作为网络维护中邻区优化的参考,为精细化维护邻区关系提供依据。 展开更多
关键词 网络结构 优化 质量 邻区距离
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Nutritional Contribution Model of Litterfall for Adjacent Areas According to the Distance of Forest
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作者 Thomaz Costa Leon Costa Leticia Almeida 《Journal of Environmental Science and Engineering(A)》 2017年第7期346-362,共17页
The goal of this study is to evaluate the drift of litterfall from forest to adjacent areas, validate a method to estimate the drift with water balance, direction and speed of winds and quantify the nutrients of litte... The goal of this study is to evaluate the drift of litterfall from forest to adjacent areas, validate a method to estimate the drift with water balance, direction and speed of winds and quantify the nutrients of litterfall in nearby area of the forest patch as function of distance. This phenomenon can be considered an ecosystem service to improve soil quality of the agriculture crops around the forests by nutrient input coming from the litterfall. The experiment was installed in adjacent areas of the tropical forest at central region of the State of Minas Gerais, Brazil. The branches, reproductive material and leaves which fell were measured for three years into the forest and adjacents areas. The sampled nets were located on edge and equal distances from the edge. It's analyzed and estimated the contribution of the litterfall components to adjacent areas by air. The quantity of litterfall by distance had large variation between adjacent areas. And it was confirmed that model estimated the leaf drift by distance with good precision. 展开更多
关键词 Wind analyze modelling ecosystem service.
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