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  • Open Access


    Modeling of Large-Scale Hydrogen Storage System Considering Capacity Attenuation and Analysis of Its Efficiency Characteristics

    Junhui Li1, Haotian Zhang1, Cuiping Li1,*, Xingxu Zhu1, Ruitong Liu2, Fangwei Duan2, Yongming Peng3

    Energy Engineering, Vol.121, No.2, pp. 291-313, 2024, DOI:10.32604/ee.2023.027593

    Abstract In the existing power system with a large-scale hydrogen storage system, there are problems such as low efficiency of electric-hydrogen-electricity conversion and single modeling of the hydrogen storage system. In order to improve the hydrogen utilization rate of hydrogen storage system in the process of participating in the power grid operation, and speed up the process of electric-hydrogen-electricity conversion. This article provides a detailed introduction to the mathematical and electrical models of various components of the hydrogen storage unit, and also establishes a charging and discharging efficiency model that considers the temperature and internal gas partial pressure of the hydrogen… More >

  • Open Access


    A Framework for e-Voting System Based on Blockchain and Distributed Ledger Technologies

    Shahid Hussain Danwar, Javed Ahmed Mahar*, Aneela Kiran

    CMC-Computers, Materials & Continua, Vol.72, No.1, pp. 417-440, 2022, DOI:10.32604/cmc.2022.023846

    Abstract Election allows the voter of a country to select the most suitable group of candidates to run the government. Election in Pakistan is simply paper-based method but some certain political and socio-economic issues turn that simple process in complicated and disputes once. Solutions of such problems are consisting of many methods including the e-voting system. The e-voting system facilitates the voters to cast their votes by electronic means with very easy and convenient way. This also allows maintaining the security and secrecy of the voter along with election process. Electronic voting reduces the human-involvement throughout the process from start to… More >

  • Open Access


    Applications of Decision Support System: A Case Study of Solanaceous Vegetables

    Muhammad Saqib, Muhammad Akbar Anjum*

    Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 331-352, 2021, DOI:10.32604/phyton.2021.011685

    Abstract Crop simulation models constitute the major proportion in decision support systems. A large number of crop models have been developed for potato and few for tomato and peppers. In the literature, thirty three crop models have been reported to simulate potato, nine for tomato and six for peppers. Some of these models dealt with the climate change scenario and others with the crop management practices such as sowing time, irrigation, nitrogen, and insect-pests management. The most evaluated and applied models for potato include; SUBSTOR, and LINTUL-Potato, whereas CROPGRO-tomato model is the most tested and applied for tomato. The AQUACROP is… More >

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