Demonstrating measure-correlate-predict algorithms for estimation of wind resources in central Finland
In this study, measure-correlate-predict (MCP) algorithms - Simple Linear Regression and Variance Ratio Methods - for predicting wind speed were studied. The MCP algorithms were successfully used to predict missing wind speeds at two sites in Jyväskylä and Viitasaari, respectively. These two algorithms used data from one of the site to predict missing wind speed data at the other site. The results obtained using the MCP methods were compared using metrics that showed the characteristics of the predicted data to be unbiased compared to measured data. From the data of this study, we also evaluated wind power density at both sites which categorized the local wind resources as poor since the determined wind power densities were less than 100 W/m2.
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Techno-economic pre-feasibility study of wind and solar electricity generating systems for households in Central Finland
Alavi, Seyed Mehdi (2014)The objective of this work is to investigate the viability of a wind, PV or hybrid wind-PV system supplemented with battery storage for electricity production to meet the electricity consumption of a typical household ... -
Energy Efficiency Optimization for Multi-cell Massive MIMO : Centralized and Distributed Power Allocation Algorithms
You, Li; Huang, Yufei; Zhang, Di; Chang, Zheng; Wang, Wenjin; Gao, Xiqi (Institute of Electrical and Electronics Engineers (IEEE), 2021)This paper investigates the energy efficiency (EE) optimization in downlink multi-cell massive multiple-input multiple-output (MIMO). In our research, the statistical channel state information (CSI) is exploited to reduce ... -
Energy Efficient Resource Allocation for Wireless Power Transfer Enabled Collaborative Mobile Clouds
Chang, Zheng; Gong, Jie; Li, Yingyu; Zhou, Zhenyu; Ristaniemi, Tapani; Shi, Guangming; Han, Zhu; Niu, Zhisheng (Institute of Electrical and Electronics Engineers, 2016)In order to fully enjoy high rate broadband multimedia services, prolonging the battery lifetime of user equipment is critical for mobile users, especially for smartphone users. In this paper, the problem of distributing ... -
Measurement of the energy distribution of electrons escaping minimum-B ECR plasmas
Izotov, Ivan; Tarvainen, Olli; Skalyga, Vadim; Mansfeld, Dmitry; Kalvas, Taneli; Koivisto, Hannu; Kronholm, Risto (IOP Publishing, 2018)The measurement of the electron energy distribution (EED) of electrons escaping axially from a minimum-B electron cyclotron resonance ion source (ECRIS) is reported. The experimental data were recorded with a room-temperature ... -
Predicting habitat suitability for Ixodes ricinus and Ixodes persulcatus ticks in Finland
Uusitalo, Ruut; Siljander, Mika; Lindén, Andreas; Sormunen, Jani J.; Aalto, Juha; Hendrickx, Guy; Kallio, Eva; Vajda, Andrea; Gregow, Hilppa; Henttonen, Heikki; Marsboom, Cedric; Korhonen, Essi M.; Sironen, Tarja; Pellikka, Petri; Vapalahti, Olli (Biomed Central, 2022)Background Ticks are responsible for transmitting several notable pathogens worldwide. Finland lies in a zone where two human-biting tick species co-occur: Ixodes ricinus and Ixodes persulcatus. Tick densities have increased ...
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