Results 31 to 40 of about 1,353,488 (291)

Energy Cooperation in Battery-Free Wireless Communications with Radio Frequency Energy Harvesting [PDF]

open access: yes, 2020
Radio frequency (RF) energy harvesting techniques are becoming a potential method to power battery-free wireless networks. In RF energy harvesting communications, energy cooperation enables shaping and optimization of the energy arrivals at the energy ...
DONG Mianxiong, LI He, OTA Kaoru
core   +1 more source

A technological solution for everywhere energy supply [PDF]

open access: yes, 2006
The hydrogen economy is still at the beginning, but society innovation, and the market push inexorably toward hydrogen, inspiring the idea to build an energy-integrated system that can satisfy, in an independent way, the energy needs of small-sized ...
Dell'Era, A.   +2 more
core   +1 more source

On the relation between energy efficiency and spectral efficiency of multiple-antenna systems [PDF]

open access: yes, 2013
Motivated by the increasing interest in energy-efficient communication systems, the relation between energy efficiency (EE) and spectral efficiency (SE) for multiple-input-multiple-output (MIMO) systems is investigated in this paper.
Chen, Yan   +4 more
core   +1 more source

Automatic Generation Control Strategy Based on Deep Forest

open access: yesIEEE Access, 2023
As the scale of the power system continues to expand and the energy situation changes dramatically, the existing automatic generation control (AGC) strategy needs to be optimized and improved. The current grid AGC mainly adopts closed-loop PI control. By
Bin Li, Jingya Chen
doaj   +1 more source

Optimization of Energy Harvesting MISO Communication System with Feedback

open access: yes, 2015
Optimization of a point-to-point (p2p) multipleinput single-output (MISO) communication system is considered when both the transmitter (TX) and the receiver (RX) have energy harvesting (EH) capabilities.
Gangula, Rajeev   +2 more
core   +1 more source

A Weekend Load Forecasting Model Based on Semi-Parametric Regression Analysis Considering Weather and Load Interaction

open access: yesEnergies, 2019
Compared to the load characteristics of normal working days, weekend load characteristics have a low level of load and are sensitive to meteorological conditions, which influences the accuracy of short-term weekend-load forecasting. To solve this problem
Bin Li   +3 more
doaj   +1 more source

Construction and Application of Intelligent Evaluation Indicator System of Line Loss Lean Management Based on Knowledge Graph

open access: yesIEEE Access, 2023
Line loss management and evaluation is a core issue in the management of power grid projects. However, with the deepening of China’s power system reform, there are too many human factors in the traditional line loss management and evaluation ...
Bin Li, Qingqing Guo
doaj   +1 more source

Energy-Efficient Power Allocation in OFDM Systems with Wireless Information and Power Transfer

open access: yes, 2013
This paper considers an orthogonal frequency division multiplexing (OFDM) downlink point-to-point system with simultaneous wireless information and power transfer.
Lo, Ernest S.   +2 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Research on OPF Control of Three-Phase Four-Wire Low-Voltage Distribution Network considering Uncertainty

open access: yesInternational Transactions on Electrical Energy Systems
As power systems become more complex and uncertain, low-voltage distribution networks face numerous challenges, including three-phase imbalances caused by asymmetrical loads and distributed energy resources.
Rui Wang   +3 more
doaj   +1 more source

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