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  1. 1661

    Preparation of Highly Efficient and Stable All-Inorganic Perovskite Solar Cells in Atmosphere Environment by Yufan Jiang, Dongdong Deng, Jingjing Dong

    Published 2025-04-01
    “…The optimized devices achieved a maximum power conversion efficiency of 12.68%.…”
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  2. 1662

    Optimal strategy for maximizing energy efficiency of 4G and 5G coexistence network by Yahui XUE, Zecai SHAO, Chunfeng CUI, Jing JIN, Hanning WANG

    Published 2022-09-01
    “…The energy efficiency of wireless networks has gradually become an important indicator for evaluating network performance.It’s very important to improve the energy efficiency of the coexisting 4G and 5G networks as there are differences in energy efficiency of them.Firstly, the energy consumption composition of base station was analyzed, energy consumption models for 4G and 5G base stations through measured data were established, and then its energy efficiency was evaluated through simulations.The results show that 4G and 5G have their own optimal energy-efficiency areas separated by the critical point of 500 Mbit/s, above which the 5G energy efficiency is better.When dual networks operate simultaneously under the proposed-solution where only 4G is used when the throughput is less than 500 Mbit/s and only 5G is used otherwise, the power consumption of a single station can be reduced by 53.4% and the energy efficiency can be improved by 116.4%.…”
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  3. 1663
  4. 1664

    Efficient privacy-preserving image retrieval scheme over outsourced data with multi-user by Xiangyu WANG, Jianfeng MA, Yinbin MIAO

    Published 2019-02-01
    “…The traditional privacy-preserving image retrieval schemes not only bring large computational and communication overhead,but also cannot protect the image and query privacy in multi-user scenarios.To solve above problems,an efficient privacy-preserving content-based image retrieval scheme was proposed in multi-user scenarios.The scheme used Euclidean distance comparison technique to rank the pictures according to similarity of picture feature vectors and return top-k returned.Meanwhile,the efficient key conversion protocol designed in proposed image retrieval scheme allowed each search user to generate queries based on his own private key so that he can retrieval encrypted images generated by different data owners.Strict security analysis shows that the user privacy and cloud data security can be well protected during the image retrieval process,and the performance analysis using real-world dataset shows that the proposed image retrieval scheme is efficient and feasible in practical applications.…”
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  5. 1665
  6. 1666

    The Effect of Outflow Launching Radial Efficiency of Accretion Disk on the Shape of Emission-Line Profiles by Mohammad Hassan Naddaf

    Published 2024-12-01
    “…By exploring different radial scenarios of disk mass loss behavior, we uncover connections between outflow radial efficiency and emission line profiles, particularly for lowly ionized lines. …”
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  7. 1667
  8. 1668

    Cost efficiency evaluation for a two-stage series network in data envelopment analysis by Zohreh Moghaddas, Mohsen Vaez Ghasemi

    Published 2020-05-01
    “…Purpose: Cost efficiency evaluation in a network system using data envelopment analysis models can be improved from various aspects in real-world applications. …”
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  9. 1669

    Low-Cost Air Gap Metasurface Structure for High Absorption Efficiency Energy Harvesting by Wei Hu, Zhao Yang, Fading Zhao, Guangjun Wen, Jian Li, Yongjun Huang, Daniele Inserra, Zhizhang (David) Chen

    Published 2019-01-01
    “…Differently from the previously presented structures which require the use of thicker and low-loss (and for this reason high cost) dielectric substrates, the presented work employs a dual-layer structure with a thin low-loss material and an air gap; they allow for the design of very high absorption efficiency metamaterial-based surfaces, with noticeably reduced costs. …”
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  10. 1670

    Research on World Food Production Efficiency and Environmental Sustainability Based on Entropy-DEA Model by Min Zhang, Wen-Kai Cui, Yu-Jing Zhang, Yun-Hua Xu

    Published 2021-01-01
    “…In addition, the comprehensive evaluation model of efficiency and sustainability was established by controlling the amount of fertilizer used, which was applied in different countries.…”
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  11. 1671

    Real-time energy efficiency analysis of buildings using ir imaging and computer vision by Lupoiu Teodor, Carutasiu Mihail-Bogdan, Necula Horia

    Published 2025-01-01
    “…Our study addresses this by creating a model for real-time energy efficiency analysis of building insulation using infrared imagery and computer vision. …”
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  12. 1672

    An Integrated Optimization Method for Energy-efficient Control of Hybrid Trains Considering Energy Management by Dalei HA, Wei HAN, Jinsong GUO, Zhuang XIAO, Qingyuan WANG

    Published 2019-07-01
    “…Simulation results showed that, in accordance with operation requirements and constraints,this method can be used to calculate the train speed profiles and the charge/discharge current value of on-board batteries accurately,which can realize the operation of two kinds of power supply system with improvement of energy efficiency to save energy consumption.…”
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  13. 1673

    ECONOMIC AND ENERGY EFFICIENCY OF SOYBEAN GROWING UNDER NO-TILL AND SALICYLIC ACID IN SOUTHERN UKRAINE by Nataliia DIDENKO, Sergiy LAVRENKO, Nataliia LAVRENKO, Vira KONOVALOVA

    Published 2022-01-01
    “…In terms of economic and bioenergy efficiency, no-till does not have significant advantages over traditional technologies. …”
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  14. 1674

    Level and Drivers of China’s Construction Industry Energy Efficiency under Carbon Dioxide Emissions by Yani Xie

    Published 2022-01-01
    “…Taking the carbon dioxide emissions of energy utilization in construction industry (CI) as an unwanted output, this study builds an index system for construction industry energy efficiency (CIEE) under carbon dioxide emissions, adopts the super-SBM to assess the CI energy efficiencies (CIEEs) of 30 Chinese provincial administrative regions (PARs) in 2005–2018, and further examines the influencing factors of the CIEEs with the panel data model. …”
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  15. 1675
  16. 1676

    Enhancing shipyard transportation efficiency through dynamic scheduling using digital twin technology. by Miaomiao Sun, Chengji Liang, Daofang Chang

    Published 2024-01-01
    “…Uncertainties, such as road restrictions at shipyards and the irregular shape of blocks, pose challenges for transporter scheduling. Efficient scheduling of multiple transporters is critical to improving transportation efficiency. …”
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  17. 1677

    Evaluating the purification efficiency of Moroccan waste stabilization ponds’ systems: challenges and future prospects by Marouan Akdim, Latifa Tajounte, Abdelmajid Achkir, Mohammed El Mahi, Mokhtar Jaait, El Mostapha Lotfi

    Published 2025-06-01
    “…However, these facilities often face performance problems, particularly related to excessive hydraulic and pollutant loads, resulting in treatment efficiencies below regulatory standards for urban discharges. …”
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  18. 1678
  19. 1679

    A Hybrid Enhancement Artificial Bee Colony Algorithm for High-efficiency Service Selection by ZHANG Hong-guo, CHEN Yang, MA Chao, FANG Zhou, HUANG Hai

    Published 2021-04-01
    “…In order to implement service selection efficiently,and to build a complex software service system that can meet the needs of users by using service aggregation method,this paper proposes a Hybrid Enhancement Artificial Bee Colony ( HEABC) algorithm. …”
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  20. 1680