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Techno-Financial Analysis of Energy Access through Hybrid System with Solar PV under the Various Rural Community Models for State of Uttarakhand, India
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作者 Ashish Verma Saurabh Biswas Syed Yasir Ahmad 《Smart Grid and Renewable Energy》 2015年第4期75-94,共20页
Uttarakhand state comes under special category state where approximately 69.45% population lived in rural area under the population density with varied range of 37 to 607 persons per sq.km. Although Uttarakhand is hav... Uttarakhand state comes under special category state where approximately 69.45% population lived in rural area under the population density with varied range of 37 to 607 persons per sq.km. Although Uttarakhand is having per capita consumption of 1112.29 kWh which is higher than national average per capita consumption of 779 kWh as till date, but remote communities, villages are not able to access clean, cheep and good quality of energy due to uneven terrain, lack of proper transmission & distribution lines [1]. 100% villages are electrified under the RGGVY scheme as per the Ministry of Power Government of India, but due to poor loading of transformer, lack of grid infrastructure and natural calamities, remote house owners are not able to get good quality of power thus affect the livelihood and source of income generation in various means [2]. As Uttarakhand state having future plans to be make state energy sufficient and energy access to all by year 2016-2017, so major ground level initiative have been taken by Government of Uttarakhand. The government of Uttarakhand has incorporated innovative business model to provide good quality of power with non-conventional energy source. Under the initiative invlovement of local people and village level, panchayats have ownership and responsibility to operate these clean energy business model to improve livelihood in remote hilly places of Uttarakhand. Under this analysis, five different type of community models are categorized as Community 1, Community 2, Community 3, Standalone 1 & Standalone 2 for rural &remote communities based on number of unclustered households with the distance covered between 200 m to 20 km, and electrical loads i.e. lighting, fan, mobile chargers, television along with time of day energy consumption patterns. These community models are for remote hilly location where grid integration and distribution lines are not feasible to built due to hilly terrain, low soil strength and huge expenses for expanding power cables for supplying good quality powe 展开更多
关键词 distributed community models HOMER Hybrid Energy Solution Solar PV HILLY Region
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Runoff of arid and semi-arid regions simulated and projected by CLM-DTVGM and its multi-scale fluctuations as revealed by EEMD analysis 被引量:4
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作者 NING Like XIA Jun +1 位作者 ZHAN Chesheng ZHANG Yongyong 《Journal of Arid Land》 SCIE CSCD 2016年第4期506-520,共15页
Runoff is a major component of the water cycle, and its multi-scale fluctuations are important to water resources management across arid and semi-arid regions. This paper coupled the Distributed Time Variant Gain Mod... Runoff is a major component of the water cycle, and its multi-scale fluctuations are important to water resources management across arid and semi-arid regions. This paper coupled the Distributed Time Variant Gain Model (DTVGM) into the Community Land Model (CLM 3.5), replacing the TOPMODEL-based method to simulate runoff in the arid and semi-arid regions of China. The coupled model was calibrated at five gauging stations for the period 1980-2005 and validated for the period 2006-2010. Then, future runoff (2010-2100) was simulated for different Representative Concentration Pathways (RCP) emission scenarios. After that, the spatial distributions of the future runoff for these scenarios were discussed, and the multi-scale fluctuation characteristics of the future annual runoff for the RCP scenarios were explored using the Ensemble Empirical Mode Decomposition (EEMD) analysis method. Finally, the decadal variabilities of the future annual runoff for the entire study area and the five catchments in it were investigated. The results showed that the future annual runoff had slowly decreasing trends for scenarios RCP 2.6 and RCP 8.5 during the period 2010-2100, whereas it had a non-monotonic trend for the RCP 4.5 scenario, with a slow increase after the 2050s. Additionally, the future annual runoff clearly varied over a decadal time scale, indicating that it had clear divisions between dry and wet periods. The longest dry period was approximately 15 years (2040-2055) for the RCP 2.6 scenario and 25 years (2045-2070) for the RCP 4.5 scenario. However, the RCP 8.5 scenario was predicted to have a long dry period starting from 2045. Under these scenarios, the water resources situation of the study area will be extremely severe. Therefore, adaptive water management measures addressing climate change should be adopted to proactively confront the risks of water resources. 展开更多
关键词 community Land model (CLM) distributed Time Variant Gain model (DTVGM) Ensemble EmpiricalMode Decomposition (EEMD) decadal variability arid and semi-arid regions
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基于社区森林模型的分布式重叠社区发现算法
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作者 张妍 刘滨 +5 位作者 梅卫 许云峰 谷利东 于彭帅 石钰 魏西峰 《河北科技大学学报》 CAS 北大核心 2022年第2期194-203,共10页
重叠社区发现是复杂网络挖掘中的重要基础工作,可以应用于社交网络、通讯网络、蛋白质相互作用网络、代谢路径网络、交通网络等多种网络的数据分析,从而服务智慧交通、传染病防治、舆情分析、新药研制和人力资源管理等领域。传统的单机... 重叠社区发现是复杂网络挖掘中的重要基础工作,可以应用于社交网络、通讯网络、蛋白质相互作用网络、代谢路径网络、交通网络等多种网络的数据分析,从而服务智慧交通、传染病防治、舆情分析、新药研制和人力资源管理等领域。传统的单机运算架构已经难以满足各类大规模复杂网络的分析和计算要求。人工智能领域的研究人员提出将社区发现应用到网络表示学习领域,以丰富网络中节点和边的特征,但传统的重叠社区发现算法在设计时未能考虑来自网络表示学习任务的相关要求,只重点关注节点的社区划分,缺乏对社区内部结构和外部边界的考虑,例如没有涉及节点在社区内部的权重和属于多个社区的归属度排序等,因而不能提供网络中节点和社区更丰富的特征信息,导致对网络表示学习任务支持不足。针对传统单机重叠社区发现算法已经不适用于大规模复杂网络挖掘,以及不能满足网络表示学习任务的相关要求等问题,提出一种基于社区森林模型的分布式重叠社区发现算法(distributed community forest model,简称DCFM算法)。首先,将网络数据集存储到分布式文件系统,将数据分块,使用分布式计算框架在每个数据分块上执行CFM算法;然后,执行社区合并;最后,汇总社区划分结果,使用真实的DBLP数据集将算法运行于Spark集群上,采用F均值和运行时间对算法进行评估。结果表明,DCFM算法的F均值稍逊于CFM算法,但其运算时间随着节点的增加接近线性下降,在牺牲小部分F均值的同时,DCFM算法具备处理大规模网络数据的能力;分割份数对计算时间的影响很大,在com-dblp.ungraph.txt数据集上,CFM算法处理数据需要192 min,而DCFM算法在将数据分成6份时,需要约91 min,分成100份后仅需要约13 min。因此,在大数据平台上采用分布式计算骨干度,从而进行社区划分、合并的DCFM算法是一种� 展开更多
关键词 分布式处理系统 社交网络 重叠社区 社区森林模型 社区发现
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