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All Journal Industrial and Systems Engineering Assessment Journal (INASEA) Journal of Engineering and Technological Sciences Jurnal Ergonomi dan K3 Social Economics and Ecology International Journal (SEEIJ) ComTech: Computer, Mathematics and Engineering Applications Industrika : Jurnal Ilmiah Teknik Industri
Rida Zuraida
Bina Nusantara University
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Mathematics Public Health Social Sciences Other

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ANALISIS BIAYA PROYEK PENAMBAHAN LAYANAN PADA CALL CENTER YANG MELAYANI DELIVERY ORDER DI PT XYZ Zuraida, Rida
Industrial and Systems Engineering Assessment Journal (INASEA) Vol 12, No 2 (2011): INASEA Vol. 12 No. 2
Publisher : Industrial and Systems Engineering Assessment Journal (INASEA)

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Abstract

Call center service is a separated business unit in PT XYZ, a fast food industry company, which served product information and delivery order. Regarding this business unit is also the profit center, so the usage of call center service as outbound call seems to help increasing company’s profit. The research is done to see the function of new service in cost and estimated probable profit. The probable profit is based on payback period and rate of return of the additional project service. The result showed that there are 95.039 calls in a month that means about 9.504 data could be used for telesales, plus 2.851 additinal continuous calls. From the total calls in a month need to be invested to add position and additional telecommunication equipment for 10 positions. Based on the cost analysis and estimated earnings, payback period from this period is about 1 year 7 months in the amount of RoR for 3 years according to position level age as 53,7%.
SKALA PENGUKURAN SHIFT KERJA, BEBAN KERJA, DAN PERSEPSI KESEHATAN SEBAGAI STRESSOR DENGAN FASILITAS MANAJEMEN UNTUK PENANGGULANGANNYA Chie, Ho Hwi; Zuraida, Rida
Industrial and Systems Engineering Assessment Journal (INASEA) Vol 14, No 1 (2013): INASEA Vol. 14 No. 1
Publisher : Industrial and Systems Engineering Assessment Journal (INASEA)

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Abstract

Human circadian system causes employees on night shift are at risk of experiencing increased stress, increased workload. Additionally, they should face the consequences of different health condition compared to employees who work on a normal shift during the day. This paper discussed the size of stress levels of employees who work in a night shift system based on (1) workload and (2) health condition, as well as (3) employee’s biological, social, and psychological condition. Other studies have shown that support from company can help employees cope with stress. The support is like management facilities, such as support from supervisor to subordinate, and training support to improve necessary skills. Thus, besides the size of employee stress levels, this study also discusses the relation of company support as stress management. The result is a measurement model of stress level obtained based on Likert scale of 5. In this model, work shift stressors are measured by self-perception of self-satisfaction by the work shift. For occupational health perception, SF-36 is used to measure self-perception of health quality. As for the workload, the measurement of four resources at works using the scale of visuality, audiotory, cognitive, and psycomotor. The implication shows that this stressor measurement scales need to be tested to see the reliability and validity of the work environment in Indonesia, as well as to test the correlation between the variables used with management facilities received by employees.
ANALISIS BEBAN KERJA DAN KELELELAHAN KERJA KARYAWAN FRONT LINER DI INSITITUSI “X” Zuraida, Rida; Jorinatan, Andi; Perkasa, Henrico; Senjaya, Richard
Industrial and Systems Engineering Assessment Journal (INASEA) Vol 14, No 2 (2013): INASEA Vol. 14 No. 2
Publisher : Industrial and Systems Engineering Assessment Journal (INASEA)

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Abstract

Fatigue is generally experienced in working as a result of employee workload. Employees at the Institution X have unique perceived workload. Their workload can lead to the onset of excessive fatigue, and leading to decrease in productivity. This study aims to determine the fatigue of employee subjectively through questionnaires that measure perceptions of fatigue felt by employees using KAUPK2, as well as the potential for fatigue using Fatigue likelihood scoring (FLS), and individual fatigue likelihood scoring (IFLS). The result of fatigue questionnaire (KAUPK2) among all 17 employees has a good value of alpha cronbach 0.8 which showed fatigue at safe levels.It indicated that men and women feel the same feelings of fatigue associated (t value = 1.75 < 2.37). It means workload given by the Institute can be tolerated by the physical and psychic abilities of employees. While the value of FLS, and IFLS in line with the results of the questionnaire – a a relatively safe level is at level 2 and level 3 for the FLS and 0 and 1 for IFLS correlation test between the two – showed no significant relationship. For dealing with risks that may occur due to employee fatigue in the future, institution may make an effort so that the employee would be more responsible for the self-recovery process. The institution could also set the working time to make sure that employee would have enough time for resting, and would identify the likelihood of excessive fatigue periodically.
Fatigue Risk of Long-Distance Driver as the Impact of the Duration of Work Zuraida, Rida
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 3 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i3.2207

Abstract

Studies on the driver's fatigue, must focus on at least two things: the time-of-day that affect by circadian factors, and time-on-task. This paper discusses the risk level of driver fatigue, which generally have to drive in a long duration or more than 4 hours. The risk of fatigue was assessed using Fatigue Likelihood Scoring (FLS) by Transport Canada. Based on interviews with 24 inter-city bus drivers, 18 of the 24 drivers have a very high risk of fatigue that characterized by FLS scores greater than 20, while the rest have a high risk driver that characterized by FLS value greater than 10. A high risk of chronic fatigue that experienced by most of drivers caused by working hours which is more than 36 hours in a week, the duration of the shift of greater than 8 hours a day, lack of time off, the amount hours of driving at night, and the amount of time off.
Tingkat Kelelahan Pengemudi Bus Rapid Transport (BRT) Jakarta Berdasarkan Swedish Occupational Fatigue Index (SOFI) Zuraida, Rida
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 2 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i2.2267

Abstract

Fatigue is a common situation experienced by everyone, but until now a simple measuring tools universally accepted is not exist. Fatigue measurement instrument most widely used is an instrument-based questionnaire. This study used the Swedish Occupational Fatigue Index (SOFI) as one of the instrument to measure BRT driver’s fatigue. The aim is to evaluate physical mental, and shift work fatigue and provide an overview of fatigue levels experienced by the driver BRT on two different shifts. Hopefully it can be used for driver fatigue management by a company. The study was conducted for two different shifts (morning and afternoon), with a total participants are 30 drivers. Results showed that motivation level of shift 2-driver is lower after they finish their work compared to shift1-driver. In shift 1, generally available time to rest,socializing and hanging out with family is longer than available time for shift 2-driver. Perception of loss of energy after work is also higher in shift 2 compared to shift 1, especially the perception of feeling exhausted. Similar results were obtained in the physical aspect and the physical exertion and physical discomfort. Therefore we can conclude the work shift has affected fatigue level experienced by the driver's BRT, and shift rotation is suggested to help the driver to recuperate.
Pengujian Skala Pengukuran Kelelahan (Spk) pada Responden di Indonesia Zuraida, Rida; Chie, Ho Hwi
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 2 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i2.2357

Abstract

Subjective fatigue measurement instruments, based questionnaire, is a measure that is widely used for reasons of practicality and measurement results can be obtained quickly. For the purposes of measuring fatigue, there are a number of questionnaires commonly used abroad, but not a lot of literature with a case study in Indonesia that utilize this instrument. Of course, the reason for the use of the instrument is based on the expectation that the instrument has high validity and reliability, and if possible to have a high level of practicality as well. Asssment Fatigue Scale (FAS) is one of the suggested use as a measurement of worker fatigue. The instrument consists of a 10 item questionnaire with good reliability level. The discussion in this paper covers Measurement Scale Fatigue testing results via questionnaires measuring fatigue, adapted from the FAS in English and translated into Indonesian. DSS consists of 10 questions using 5 Likert scale, for the answer options are: never (1), sometimes (2), perceived a regular basis (3), is common (4), is always experienced (5). Relaibilitas test results using Cronbach alpha values obtained value of 0812, and can be improved if the item is question number 3 is removed. By implication, this questionnaire is good enough to use as a measuring instrument fatigue, but the level of proficiency in Indonesian language, in this CMS, needs to be repaired, especially for question number 5 and 3 if the level of validity and reliability to be improved, although the increase may not be too significant.
Analisis Penyebab Nyeri dan Ketidaknyamanan dalam Bekerja pada Pengrajin Keset Kain Limbah–Pringapus Semarang Zuraida, Rida
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2456

Abstract

This research identified any kind of work condition and craftsman’s posture that trigger the pain and discomfort for craftsman of doormat in Pringapus, Semarang. Observation of the work condition is conducted including work facilities and their posture during sewing process. To identify their pain and discomfort, Nordic Musculoskeletal Questionnaire (NMQ) is used as reference. The result is used as an input for rapid upper limb assessment worksheet (RULA) to determine the level of the risk. RULA’s final score is indicated the conditions need further investigation and change may be needed. Based on the analysis using fishbone diagram, to overcome pain/discomfort in the area of the neck and the shoulder, high adjustment of table and seat is suggested, because the evidence shows they trigger the craftsmen’s bad posture. For pain/discomfort of back and waist, the seat should have good back support. Whereas for the hip, the craftsman suggested to use the seat with thick and wider sleeper, so they can sit comfortably. For foot problems, to relieve the pain for their free feet, it is suggested to use a bench that functions as foot rest; and for the sewing feet, it is suggested to give heels support so the sewers' heels can be free from strain while sewing.
Pengendalian Kualitas untuk Meminimalkan Jumlah Cacat pada Produk Kaleng Aeorosol Zuraida, Rida; Rantautama, Bima; Sutrisnohadi, Notri; Pratomo, Chondro Dewo Adi
ComTech: Computer, Mathematics and Engineering Applications Vol 3, No 1 (2012): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v3i1.2457

Abstract

2.64% is the largest defect percentage of aerosol can product of PT Multi Makmur Indah Industri. To improve the product quality, the study focused on the goal of reducing the percentage of defects using the Statistical Quality Control. After gaining control of the company, we can calculate the process capability in the aerosol can manufacture. The next step is identification of the defects causes that arise using the failure mode and effect analysis (FMEA) method to measure the defect causes risks and as an input in determining control recommendations. From the observations and data processing, it is recognized that the overall phase of the process has a process capability value above 99%. 80% of defects in the aerosol cans product occur during the process of can making, component making and printing. While the most risking defect cause is the destruction ofmachine B coating on the printing process (RPN = 245) and the quality of the welding wire on can manufacturing process (RPN = 160). Therefore, the solution to reduce the defect percentage is replacing the damaged coating machine B as well as upgrading the quality of the welding wire. Thus, it can reduce the losssale as much as 1.06% (Rp110,716,000) per month.
An Analysis of EEG Changes during Prolonged Simulated Driving for the Assessment of Driver Fatigue Zuraida, Rida; Iridiastadi, Hardianto; Sutalaksana, Iftikar Zahedi; Suprijanto, Suprijanto
Journal of Engineering and Technological Sciences Vol 51, No 2 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.919 KB) | DOI: 10.5614/j.eng.technol.sci.2019.51.2.9

Abstract

Fatigue during driving is the main contributing factor to road accidents. It is influenced by time on task (TOT) and time of day (TOD). Recent electroencephalogram (EEG) research on fatigue assessment has shown a promising result in explaining the fatigue phenomenon. However, different findings exist regarding the best EEG parameters related to fatigue. This study examined EEG changes according to the effect of TOT and TOD and determined the best parameters to distinguish fatigue status. To generate driver fatigue, prolonged driving in the morning and at night in a simulator was conducted. The EEG signal was collected from 28 male participants at frontal and occipital areas. The EEG power (brainwave) was determined from the first and last 5 minutes of the driving task and after a break of 30 minutes. The results of this study showed a general tendency of EEG power changing throughout the driving sessions. However, changes related to fatigue were only found for the night sessions, as confirmed by q power and the subjective fatigue measurement result. This study showed that TOT (as a factor that induces fatigue) was explained by q from the frontal area, whereas TOD was differentiated by a, q, q/b, (q+a)/b and (q+a)/(b+a).
WORKLOAD AND JOB SATISFACTION ANALYSIS AS THE BASIS OF WORK SYSTEM IMPROVEMENT Wahyudi, Roy; Zuraida, Rida; Pangestu, Felicia
Social Economics and Ecology International Journal Vol 2, No 2 (2018): October
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/seeij.v2i2.5637

Abstract

Employees’ workload can be high when the existing manpower is limited and the list of jobs to do are long. For the employee, the workload may affect their job satisfaction and their performance in the long-term. Assessment of workload and its influence to job satisfaction was done at Sustainability and Operation Department of cultivates and harvests oil palms Company in Indonesia. The workload was measured using NASA-TLX that measure mental demand, physical demand, temporal demand, performance, effort, and frustration. While job satisfaction is measured using a questionnaire about superiors’ support, colleagues assistance, remuneration, and promotion. The assessment result showed that employee’s workload in these departments was identified as rather high. This is coming from commonly overtime exists and high domestic traveling frequency. Besides that, there is a correlation between workload and job satisfaction. There is two correlations model, positive and negative. The high workload can improve the job satisfaction, but otherwise, it can decrease job satisfaction. To reduce the workload, information system and database suggested for the company to reduce the employee difficulty in accessing data to finish their job that caused excessive overtime.
Co-Authors Andi Jorinatan Ardelia Christabel Tobing Ayu, K. Gita Bima Rantautama Chondro Dewo Adi Pratomo Felicia Pangestu Hardianto Iridiastadi Henrico Perkasa Ho Hwi Chie Ho Hwi Chie Iftikar Zahedi Sutalaksana Iftikar Zahedi Sutalaksana Ignasius Rian K. Gita Ayu Notri Sutrisnohadi Pangestu, Felicia Pratomo, Chondro Dewo Adi Rantautama, Bima Ria Audina Stefani Richard Senjaya Roy Wahyudi Suprijanto Suprijanto Suprijanto Suprijanto Sutrisnohadi, Notri Wahyudi, Roy Wisnu Eko Nugroho