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ANALISIS UJI IMPAK DAN MIKROSTRUKTUR KOMPOSIT MATRIKS RESIN POLYESTER BERPENGISI CANGKANG TELUR AYAM KAMPUNG Asmeati; Ali, Muhammad Yusuf; Syahrir, Muhammad; Riswandi
Jurnal Sosial dan Teknologi Terapan AMATA Vol. 3 No. 2 (2024): September 2024
Publisher : Politeknik Amamapare

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55334/sostek.v3i2.315

Abstract

Along with the advancement of science and technology, composite materials have developed rapidly. The emergence of new materials is a breakthrough in composite technology. Many wastes around us can be used as materials that can increase the toughness of composites such as chicken egg shells. This study was conducted to determine the toughness and microstructure of composites with variations in the volume fraction of chicken egg shells mixed with polyester resin. The variations in the volume fraction are 10%, 20% 30%, 40%, 50%, and 100% resin (without shells). The specimen tests of this study were impact tests and SEM tests. The results of the study stated that the highest impact test value was found in the 30% fraction variation, namely 19,163 KJ / m2 and the lowest impact test value was found in the 100% fraction variation without egg shell mixture with a value of 4,409 KJ / m2. SEM testing found the particle shape, almost single round shape and lumps with sizes of 2.99 to 16.8 μm and found agglomeration and nano particles have different sizes, there are pores due to wind entering and becoming bubbles when drying the specimen which causes low impact test values. Keyword: Chicken egg shells, Composite, Polyester Resin, Impact, Microstructure
Cyberloafing and Job Burnout Among Educators : How Does Organizational Commitment Play A Role as A Moderating Variable? Ali, Muhammad Yusuf; Mulyati, Heti; Sukmawati, Anggraini
Jurnal Kependidikan : Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran, dan Pembelajaran Vol. 10 No. 2 (2024): June
Publisher : LPPM Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jk.v10i2.11318

Abstract

This study aims to analyze the effects of job burnout and cyberloafing on educator performance and the role of job burnout on cyberloafing, moderated by organizational commitment. This research employs a quantitative approach to validate hypotheses involving educators from the State University with Legal Entity Status in West Java, using a sample of 377 respondents and a questionnaire instrument adapted from various previous studies. Data was collected through questionnaires and analyzed using the Partial Least Square Equation Modeling (PLS-SEM) technique with SmartPLS software. The results indicate that job burnout has a significant positive effect on cyberloafing, suggesting that higher levels of job burnout correspond to an increased tendency for cyberloafing. Meanwhile, organizational commitment is an effective moderator in reducing the negative impact of job burnout on cyberloafing, which in turn helps improve employee performance. Thus, the study demonstrates that job burnout increases cyberloafing behaviour and decreases employee performance, yet organizational commitment can act as an effective moderator to mitigate these negative impacts. The implications of this research suggest that educational organizations can reduce the negative impact of burnout and cyberloafing on educator performance by promoting organizational commitment. This can contribute to creating a healthier and more productive work environment.