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All Journal Rotasi International Journal of Business and Management Technology in Society (IJBMTS)
Sukanda, Jordan Michael
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Economics, Econometrics & Finance Mechanical Engineering Social Sciences

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Simulasi Numerik Pengaruh Aspect Ratiodan Sudut Serang Terhadap Performa Turbin Angin Sumbu Vertikal H-Rotor Kurniawati, Diniar Mungil; Sukanda, Jordan Michael
ROTASI Vol 22, No 1 (2020): VOLUME 22, NOMOR 1, JANUARI 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.22.1.22-28

Abstract

The vertical axis wind turbine is a wind turbine which is rotational axis is perpendicular to the ground surface. The H-rotor vertical axis wind turbine has a number of design parameters that can affect the performance of wind turbines. In this study discussed the effect of aspect ratio (H/D) and angle of attack on the performance of H-rotor wind turbine. Variations on the aspect ratio (H/D) used are 0,64 and 1,56 on the angle of attack is 0o and 5o, the type of airfoil NACA0015. The study method used is a numerical simulation of H-rotor wind turbines with computational fluid dynamics 3 dimension. The wind speed utilized for simulation pupose was 3 m/s. Variations on the Tip speed  ratio used are 3; 3,5 and 4 so that produced angular velocity at aspect ratio (H/D) 0,64 are 14,4; 16,8 and 19,2 while at aspect ratio (H/D) 1,56 are 22,5; 26,25 and 30. Results from this study that the H-rotor vertical axis wind turbine with variations on aspect ratio (H/D) 0,64 has variation in the power coefficient (CP) value better than the aspect ratio (H/D) 1,56. That is the power coefficient (CP) value includes 0,388; 0,445 and 0,378 on the angle of attack 0o while 0,390; 0,454 and 0,389  on the angle of attack 5o. The variations of angle of attack 5o produces the highest power coefficient (CP), which is 0,454 in the aspect ratio (H/D) 0,64 is 0,417 on the aspect ratio (H/D) 1,56. The H-rotor wind turbine with aspect ratio (H/D) 0,64 and angle of attack 5o on Tip Speed Ratio 3,5 produces the highest power coefficient (CP) value which is 0,454.
The Effect of Training, Development, and Innovative Work Behaviour on Employee Performance in the Heavy Equipment Industry Aditya Dwi Septyanur; Sukanda, Jordan Michael; Majdi, Muhammad Zaenul Ihsan; Hanoum, Syarifa; Saraih, Ummi Naiemah
International Journal of Business and Management Technology in Society Vol. 1 No. 2 (2023)
Publisher : Direktorat Riset dan Pengabdian Kepada Masyarakat, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j30254256.v1i2.1863

Abstract

Abstract Purpose – The study aims to determine the impact of training, development, and innovative work behavior on employee performance in the heavy machinery industry. Methodology – This study employs an explanatory approach using a logistic regression model with data collected through questionnaires from 79 respondents working in a heavy machinery industry in Indonesia. The variables studied include training, development, and innovative work behavior as independent variables, and employee performance as the dependent variable. Findings – The results show that training and development have a significant positive effect on employee performance (p < 0.05), while innovative work behavior does not show a statistically significant impact (p > 0.05). The Nagelkerke R Square value indicates that 23.2% of the variance in employee performance can be explained by the model. Practical implications – From findings suggest that companies should focus on improving training and development programs to enhance employee performance. Meanwhile, efforts to foster innovative behavior may require a reevaluation of current strategies and organizational support mechanisms.
Co-Authors Aditya Dwi Septyanur Kurniawati, Diniar Mungil Majdi, Muhammad Zaenul Ihsan Saraih, Ummi Naiemah Syarifa Hanoum