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    The Impact of Autonomy Reform on the Efficiency of Public Hospitals in China: A DEA-ITSA Combination Analysis by An N, Zou Q, Li JB, Luo K, Sun G, Ni X, Xia O

    Published 2025-04-01
    “…The purpose of this research is to assess the reform’s success and explore its effects on hospital outcome efficiency, laying a foundation based on empirical evidence for future policy decisions.Methods: The data envelopment analysis(DEA) and interrupted time-series analysis (ITSA) approaches were combined to analyze the reform impacts on the 16 samples of Shenzhen municipal public hospitals in China, using data extracted from the Shenzhen Health Statistics Yearbook from 2002 to 2023.Results: The results revealed that from 2002 to 2023, 15 out of 16 sample hospitals achieved total factor productivity improvement in Shenzhen city of China, with the average growth rate of Malmquist total factor productivity index(MI) was 3.05% and the highest growth rate was 6.93%, yet only one hospital showing a growth rate of − 0.02%. …”
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    Design Optimization of Energy-Efficient Residential Buildings in Morocco by Karim Boumlik, Rafik Belarbi, Mohammed Ahachad, Mustapha Mahdaoui, Hassan Radoine, Moncef Krarti

    Published 2024-12-01
    “…In this paper, an optimization-based analysis approach is presented to cost-effectively improve the energy efficiency of residential buildings in Morocco. …”
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    Simulation, Control and Experimental Analysis of 1,3Butadiene Purification Unit by Rahbar Rahimi, Shirin Boulaqhi, Amir Ziarifar

    Published 2016-11-01
    “…Simulation of a process and analysis of its resulting data in both dynamic and steady-state conditions are fundamental steps in understanding the process in order to design and efficient control of system as well as implementing operational cost reduction scheme. …”
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    Turbulent Transport Efficiency of Momentum and Sscalar over Forest Canopy in Southern Sichuan by Yi DING, Yu ZHANG, Demin FAN, Youqi SU, Qian ZHANG, Yanqi WANG, Yanqi WANG

    Published 2025-06-01
    “…The turbulent transport characteristics of momentum and scalar over the canopy were studied by using the three levels (20 m, 38 m and 56 m) turbulence data measured at the 60m forest micro meteorological tower in southern Sichuan from May 1 to June 30, 2021.Coherent structure is the main form of turbulent motion, which is composed of updraft (ejection) and downdraft (sweep).In this paper, the quadrant analysis method is used to analyze the boundary of the roughness sublayer, roughness sublayer and constant flux layer above the forest canopy and the ejection-sweep motion characteristics of the constant flux layer, including the difference of ejection and sweep contribution to flux, the difference between momentum and scalar transport, and the difference between different scalar (T, q, CO2) transport.The results show that under unstable and stable conditions, the ejection dominates the scalar transport at all three levels, while the sweep is the main eddy current motion for scalar transport above the roughness sublayer under neutral conditions.For the momentum flux, under unstable conditions, the ejection dominates at all three levels.Under stable conditions, the ejection dominates at the roughness sublayer and the constant flux layer, while at the boundary of the roughness sublayer and the constant flux layer, the effect of the sweep is greater than that of the ejection.Under neutral conditions, the flux contribution of the sweep is greater than that of the ejection except for the roughness sublayer.The third-order cumulant expansion method (CEM) can more accurately express the flux contribution caused by ejection and sweep, while the incomplete cumulant expansion method (ICEM) is poor in simulating the temperature at the boundary of roughness sublayer and constant flux layer.Through the calculation of transmission efficiency, the difference between momentum and scalar transmission is further quantified.The turbulent transfer efficiency of momentum decreases with increasing instability, while the heat transfer efficiency is the opposite.Atmospheric stability is an important factor controlling momentum and scalar transfer, and the transfer efficiency of water vapor is less affected by atmospheric stability.Under the condition of strong instability, the heat transfer efficiency is more effective than other scalar transfer.…”
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