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  • 1
    Online-Ressource
    Online-Ressource
    The Korean Powder Metallurgy & Materials Institute ; 1970
    In:  journal of Korean Powder Metallurgy Institute Vol. 25, No. 1 ( 1970-01-01), p. 7-11
    In: journal of Korean Powder Metallurgy Institute, The Korean Powder Metallurgy & Materials Institute, Vol. 25, No. 1 ( 1970-01-01), p. 7-11
    Kurzfassung: 〈 p 〉 In this study, we synthesize tungsten oxide thin films by electrodeposition and characterize their electrochromic properties. Depending on the deposition modes, compact and porous tungsten oxide films are fabricated on a transparent indium tin oxide (ITO) substrate. The morphology and crystal structure of the electrodeposited tungsten oxide thin films are investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). X-ray photoelectron spectroscopy is employed to verify the chemical composition and the oxidation state of the films. Compared to the compact tungsten oxides, the porous films show superior electrochemical activities with higher reversibility during electrochemical reactions. Furthermore, they exhibit very high color contrast (97.0%) and switching speed (3.1 and 3.2 s). The outstanding electrochromic performances of the porous tungsten oxide thin films are mainly attributed to the porous structure, which facilitates ion intercalation/deintercalation during electrochemical reactions. 〈 /p 〉
    Materialart: Online-Ressource
    ISSN: 2799-8525 , 2799-8681
    Sprache: Englisch
    Verlag: The Korean Powder Metallurgy & Materials Institute
    Publikationsdatum: 1970
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Online-Ressource
    Online-Ressource
    Korean Society of Epidemiology ; 1970
    In:  Epidemiology and Health Vol. 45 ( 1970-01-01), p. e2023009-
    In: Epidemiology and Health, Korean Society of Epidemiology, Vol. 45 ( 1970-01-01), p. e2023009-
    Kurzfassung: OBJECTIVES: Occupational stress management is particularly important for successful business operations, since occupational stress adversely affects workers’ health, eventually lowering their productivity. Therefore, this study aimed to investigate the correlation between occupational stress and health-related productivity loss (HRPL) among Korean workers.METHODS: In 2021, 1,078 workers participated in a web-based questionnaire survey. HRPL was measured using the Work Productivity and Activity Impairment Questionnaire, and occupational stress was measured using the Korean Occupational Stress Scale-Short Form. The occupational stress level was divided into tertiles (low, intermediate, and high), and the low occupational stress group was used as the reference group. Using a generalised linear model, differences in labour productivity loss according to the level of occupational stress were tested after adjusting for demographic characteristics such as age, gender, education level, household income, occupation, and underlying medical conditions.RESULTS: Non-parametric regression analysis of HRPL according to occupational stress showed a direct association between occupational stress and HRPL. A statistically significant difference was observed in HRPL between participants with intermediate and high occupational stress and those with low occupational stress.CONCLUSIONS: Our results support the hypothesis that high occupational stress is associated with decreased labour productivity.
    Materialart: Online-Ressource
    ISSN: 2092-7193
    Sprache: Englisch
    Verlag: Korean Society of Epidemiology
    Publikationsdatum: 1970
    ZDB Id: 2590698-7
    Standort Signatur Einschränkungen Verfügbarkeit
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