Results 31 to 40 of about 14,068,745 (433)
Energy Efficiency and Spectral Efficiency Tradeoff in RIS-Aided Multiuser MIMO Uplink Transmission [PDF]
IEEE Transactions on Signal Processing, 2020 The emergence of reconfigurable intelligent surfaces (RISs) enables us to establish programmable radio wave propagation that caters for wireless communications, via employing low-cost passive reflecting units.
Li You +5 more
semanticscholar +1 more source
Energy Performance of Italian Oil Refineries Based on Mandatory Energy Audits
Energies, 2022 Petroleum products account for the 32.3% of worldwide primary energy. There are more than 100 oil refineries in Europe that directly employ 119,000 people with a turnover of EUR 600 billion and around 1.2% to the total value added in manufacturing ...
Carlos Herce +3 more
doaj +1 more source
Broadband quantum-dot frequency-modulated comb laser
Light: Science & Applications, 2023 Frequency-modulated (FM) laser combs, which offer a quasi-continuous-wave output and a flat-topped optical spectrum, are emerging as a promising solution for wavelength-division multiplexing applications, precision metrology, and ultrafast optical ...
Bozhang Dong +5 more
doaj +1 more source
International Journal of Metrology and Quality Engineering, 2023 Dynamic building energy simulation and life cycle assessment (LCA) are useful ecodesign tools to mitigate the energy and environmental impacts of buildings.
Pannier Marie-Lise +2 more
doaj +1 more source
Energies, 2021 With the formation of an international carbon-neutral framework, interest in reducing greenhouse gas emissions is increasing. Ammonia is a carbon-free fuel that can be directly combusted with the role of an effective hydrogen energy carrier, and its ...
Hookyung Lee, Min-Jung Lee
doaj +1 more source
Artificial Intelligence Evolution in Smart Buildings for Energy Efficiency
, 2021 The emerging concept of smart buildings, which requires the incorporation of sensors and big data (BD) and utilizes artificial intelligence (AI), promises to usher in a new age of urban energy efficiency.
Hooman Farzaneh +5 more
semanticscholar +1 more source
Energy Conversion and Management, 2008 Abstract In this paper, “energy efficiency” studies, done in a big industrial facility’s pumps, are reported. For this purpose; the flow rate, pressure and temperature have been measured for each pump in different operating conditions and at maximum load. In addition, the electrical power drawn by the electric motor has been measured.
Kaya, Durmus +5 more
openaire +4 more sources
Spectral and Energy Efficiency of IRS-Assisted MISO Communication With Hardware Impairments [PDF]
IEEE Wireless Communications Letters, 2020 In this letter, we analyze the spectral and energy efficiency of an intelligent reflecting surface (IRS)-assisted multiple-input single-output (MISO) downlink system with hardware impairments.
Shaoqing Zhou +4 more
semanticscholar +1 more source
Improving the Representation of Energy Efficiency in an Energy System Optimization Model [PDF]
Applied Energy, 306: 118083 (2022), 2021 Energy system optimization models (ESOMs) are designed to examine the potential effects of a proposed policy, but often represent energy-efficient technologies and policies in an overly simplified way. Most ESOMs include different end-use technologies with varying efficiencies and select technologies for deployment based solely on least-cost ...
arxiv +1 more source
Energy Efficient Power Allocation for Device-to-Device Communications Underlaid Cellular Networks Using Stochastic Geometry [PDF]
Transactions on Emerging Telecommunications Technologies, 3
September 2019, 2019 In this paper, we study an energy efficiency maximization problem in uplink for D2D communications underlaid with cellular networks on multiple bands. Utilizing stochastic geometry, we derive closed-form expressions for the average sum rate, successful transmission probability, and energy efficiency of cellular and D2D users.
arxiv +1 more source