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Effect of Lighting and Noise Level Toward Thw Speed Ahm Mechanical Work (Case Study: Honda Catur Putra Jaya Ahass 06703) Tannady, Hendy; Nurprihatin, Filscha; Chandra, Steven
Teknik dan Ilmu Komputer Vol. 06 No. 21 Januari - Maret 2017
Publisher : Teknik dan Ilmu Komputer

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Abstract

Abstrak Pencahayaan dan kebisingan merupakan bagian dari lingkungan kerja fisik yang dapat memengaruhi kinerja mekanik. Semakin baik pencahayaan dan kebisingan di suatu tempat kerja akan meningkatkan produktivitas serta kenyamanan pekerja sehingga kinerja karyawan akan menjadi optimal. Tujuan dari penelitian ini adalah untuk merancang serta memahami sistem pencahayaan dan kebisingan yang dapat memengaruhi kinerja operator. Penelitian ini dilakukan di Honda Catur Putra Jaya AHASS 06703. Objek penelitian ini adalah seorang mekanik Honda yang sedang memperbaiki motor. Data yang digunakan dalam penelitian ini diperoleh dari hasil observasi langsung. Teknik analisis data yang digunakan dalam penelitian ini adalah Design Of Experiment dengan menggunakan uji F. Hasil penelitian menunjukkan bahwa faktor pencahayaan memengaruhi kinerja mekanik dalam bekerja, sedangkan faktor kebisingan tidak memengaruhi kinerja mekanik dalam bekerja. Kinerja mekanik yang terbaik pada saat pencahayaan 167 Lux, sedangkan kebisingan tidak memengaruhi kinerja mekanik akan lebih baik jika mengikuti standart kebisingan. yaitu 85 dB. Kata Kunci: pencahayaan, kebisingan, kinerja mekanik  Abstract Lighting and noise is part of the physical working environment which may affect the mechanical performance. Better lighting and noise in a workplace will improve productivity and comfort of workers so that the employees’ performance will be optimal. The purpose of this research is to design and understand the lighting and noise system which can affect the performance of the operators. This research was conducted at Honda Catur Putra Jaya AHASS 06703. The object of this study is a Honda mechanic who was repairing a motor. The data used in this research was obtained from direct observation. Data analysis techniques used in this study is the Design Of Experiment with F test. Results showed that the lighting factor affects the performance of mechanical work, while the noise factor does not affect the performance of mechanical work. Mechanical performance is best when the lighting amounts to 167 Lux, while the noise does not affect the mechanical performance, and will be better if you follow standard noise at 85 dB. Keywords: Lighting, Noise, Performance Mechanical 
A Critical Review on Mathematical Functions Employed for Heptane Plus Characterization in Gas Condensate Reservoirs: Lessons Learned and Future Development Chandra, Steven
Journal of Earth Energy Engineering Vol 7 No 1 (2018): APRIL
Publisher : Pekanbaru Riau: Program Studi Teknik Perminyakan FT Universitas Islam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.16 KB) | DOI: 10.25299/jeee.2018.vol7(1).1115

Abstract

Characterizing heptanes plus fraction in PVT analysis has been a complex problem since its first inception. In this publication, the author is reviewing available mathematical functions employed for this task, whilst pointing out advantages and weaknesses for each of them and proposing a new method that is capable of complex characterization. This publication addresses a new method that is capable of accurately characterize heptane plus fraction especially in discontinued areas where errors could leap up to 40%. The author modifies natural logarithmic function to be used as an accommodation to discontinuities. The modified distribution provides better accuracy in modeling the discontinuities as a straight-line function, making them ideal for real gas condensate composition characterization. The new method is tested against several test data used by previous researchers, and applied to 3 sets of field data. The results have shown that this new method is capable of lowering CPU requirement whilst making better accuracy for all test data.