http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ansori, Nachnul,Widyanti, Ari,Yassierli, Yassierli Occupational Safety and Health Research Institute 2021 Safety and health at work Vol.12 No.2
Background: A number of accidents have occurred in small and medium enterprises (SMEs). Efforts in reducing accidents have been undertaken through the implementation of safety behaviors. Unfortunately, few studies have examined motives behind unsafe behaviors, such as safety silence motives. This study aimed to observe the motives underlying safety behaviors, namely safety silence motive (SSM) (SSM-relation, SSM-climate, SSM-issue, and SSM-job) and to evaluate the effect of SSM and safety communication on safety participation in different industrial sectors and scales. Materials and Methods: Eighty workers from two industrial sectors and scales of SMEs were involved. They were instructed to fill out a set of questionnaires. A five-Likert scale was used to respond. An independent t test was applied to find any significant differences. The partial least square-structural equation modeling for multigroup was used to develop a model on relations among the variables. Results: The results showed that SSM scores were high in SMEs, and the scores were different across industrial sectors and scales. SSM had a negative influence on safety communication, and safety communication positively influenced safety participation. Conclusion: The study of SSM, safety communication, and safety participation in different sectors and scales should be separated in SMEs.
A Comparison of Usability Testing Methods in Smartphone Evaluation
Andrie Pasca Hendradewa,Yassierli 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.2
A number of conventional methods are available for usability testing of smartphones, but their effectiveness is yet to be established. The objective of this study was to compare the effectiveness of the usability testing methods in identifying the problems of a smartphone design. Three usability methods, Think-Aloud (TA), Cognitive Walkthrough (CW), and Heuristic Evaluation (HE), were selected for comparison, and 15 smartphone users and 16 usability experts were chosen as participants in the comparative study. The results of this study indicate that HE method is the most effective one and has the highest severity rating. Additionally, this study finds that eight evaluators are sufficient for using HE method to find most of the usability problems. There has been substantial increase recently in smartphone sales that trigger a tough competition among the smartphone manufacturers. The usability of the smartphone has become among most smartphone users consider before buying their phones. This study proposed a guideline for usability testing of smartphones.
Wyke Kusmasar,Titah Yudhistira,,Yassierli 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.4
Construction has been categorized as an industry with a high prevalence of musculoskeletal complaints. Previous studies have found that several risk factors are related to such complaints across industries, but limited evidence existsfor construction work. Effective interventions are needed to minimize the risk of musculoskeletal disorders amongconstruction workers. This study involved 33 workers of a building construction project in the campus of Institut Teknologi Bandung. A self-reported questionnaire was utilized to collect data on workers’ musculoskeletal complaints,and the data were then processed using logistic regression. The results showed that shoulder was the body part withthe highest prevalence during the last 12 months. Significant associations were found between work hour per day andthe prevalence of knee complaint (OR:1.63; 95% CI:1.02-2.63) as well as between race and shoulder complaint in thelast 6 months (OR:12; 95% CI:1.17-122.45). Implications of the results are discussed. Further, the findings suggestthat work characteristic and occupational factors need to be considered in developing effective interventions to reducerisks of musculoskeletal disorders for construction workers in Indonesia.
Effects of Long Exposures of Peppermint Aroma on Awareness in Simulated Driving
Dwita Astari Pujiartati,Alam Faturrochman,Yassierli 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.4
Reports show that number of driving accident is still high. Among the main the factors causing the accident is sleepiness induced by fatigue and monotonous driving task. Though there is a lack of consensus, stimulant aroma has beenreported as an alternative intervention to maintain awareness. However, its long exposure effect is not known yet. Thisresearch consisted of two studies. The first study was conducted to investigate people preferences against three stimulant odors: pepermint, rosemary, and basil essential oil. The second study was carried out to investigate effects of themost preferred aroma in long exposures on awareness in simulated drivingIn the first study, a questionnaire was distributed to 100 participants. They were asked to rate both “liking” and “wanting” of each odor given randomly. Results of the first study indicated that the most liked and wanted odor was peppermint. However, there were no significant differences of these three aromas based on gender or ethnic group(p>0.05). Therefore, peppermint was then used in the second study. In the second study, a total of 12 participants performed simulated driving for 2 hours under three conditions: (1)without peppermint odor exposure, (2) with peppermint odor exposure only during the simulation, and (3) with theexposure for 3 consecutive nights before the simulation. During the experiment, participants’ awareness was monitored using electroencephalograph (EEG), heart rate monitor (HRM), and Karolinska Sleepiness Scale (KSS). Resultsof this study shows that there was an increased awareness indicated during both, short and long exposure of peppermint odor, compared to no-odor condition. There was no significant difference (p>0.05) between the effect short andlong exposure of peppermint odor. This study suggests possibility of using peppermint odor in maintaining awarenessin driving.
Yusuf Nugroho Doyo Yekti,Khoirul Muslim,Yassierli 대한산업공학회 2022 Industrial Engineeering & Management Systems Vol.21 No.4
Fatigue has been considered as a major contributing factor to workplace accidents. While most previous studies on fatigue have been conducted in a laboratory setting, the current study was performed in the mining region of Kali-mantan, Indonesia. This study assessed the fitness-for-work and fatigue experienced by 21 maintenance technicians at two mining workshops. This study focused on three independent variables: work shift (day shift and night shift), work locations (non-remote area and remote area), and individual fitness. Heart rate and the Psychomotor Vigilance Test (PVT) data (in terms of total error and mean reaction time) were collected at the beginning, middle, and end of work. Covariance analysis was applied to determine the effect of the independent variables on fitness-for-work and fatigue. The results show that work shift and individual fitness significantly influence fitness-for-work (p < 0.05). However, none of the independent variables significantly affect fatigue, even though fitness-for-work and fatigue are strongly correlated (r = 0.69, p < 0.05). These results proved the role of fitness-for-work as an intermediate factor in fatigue. We suggest that there should be a shift in strategy for reducing the risk of accident-related fatigue, from fa-tigue monitoring directly to fitness-for-work screening. Eventually, the practical implementations of the findings are discussed comprehensively.