Ergonomic Intervention in Organization and Work Station Increases Student's Work Performance and Efficiency of Electrical Energy Consumption

Woodworking workshop could be hazardous to workers' health, particularly when itis done improperly. Workers could be exposed to the following risks such as overexertion,repetitive motion, noise, dust, and chemicals that may threaten workers' health; decreaseswork inefficiency and excessive strains due to inappropriate working condition or posture.This study was conducted to examine the effect of ergonomics intervention in the students'work performance and the efficiency of the electrical energy consumption at thewoodworking workshop of Bali State Polytechnic.This is an experimental study with pre and post test control group design. Subjectswere divided into 4 groups of students, each consisting of 10 students, all performing thesame task with different working condition: (1) the original working condition for controlgroup (CG); (2) a new organization for treatment group 1 (TG1); (3) a new work station fortreatment group 2 (TG2); and (4) both new organization and work station for treatmentgroup 3 (TG3). Normally distributed and equal data were analyzed by using the One WayAnova test and followed by the Post Hoc–LSD test, and the remaining data were analyzedby using the Kruskal Wallis test and followed by the Mann-Whitney test at the level ofsignificance ? = 0.05.Result showed that students' work performance in TG1 increased in moderately,while those in TG2 and TG3 increased very considerably. Moreover, there was nosignificant increased of the efficiency of electrical energy consumption in TG1 (p > 0.05),but there were significant increased of electrical energy consumption of about 44.74% and107.89% respectively in TG2 and TG3 (p < 0.05). This gain were accompanied by savingcost of the electrical energy consumption of about 38.64% and 58.68% respectively. It alsoappeared that the increased students' work performance and the efficiency of electricalenergy consumption were highest in TG3.In conclussion, it may be stated that comprehensive ergonomic intervention in boththe organization and work station in an effort to apply total ergonomic approach hasproduced the best effect in terms of increased students' work performance and efficiency ofelectrical energy consumption at the woodworking workshop Bali State Polytechnic

Ergonomic Intervention Decreases the Load of Learning and Increases the Students Performances

Most students\u27 activities in respect to the implementation of the academic curriculumare done at home. In fact, conventional activity done by the students in boardinghouse ofMinahasa tradition showed unfavorable risks to students based on the load of learning withindicators of musculoskeletal complaints, boredom, and fatigue. Consequently, thestudents were not yet able to attain the intended performance. To overcome the problems,it has made the efforts of ergonomics intervention. In order to test the capability of theergonomics interventions, it had been done a research with the hypothesis, the ergonomicsinterventions on the activity in boardinghouse of Minahasa tradition: normalizes the bodytemperature; decreases the musculoskeletal complaints; decreases the level of boredom;decreases the level of fatigue; increases the accuracy of working; increases the speed ofworking; increases the constancy of working; and increases the results of working of thestudents. This research was done in two periods by utilizing the treatment by subjectdesign. The first and second period was done during four weeks, without and withergonomic intervention. The subjects utilized in the research were as many as 15 persons.The measurements of dependent variables were done before and after doing the activity.The results of the research showed that the ergonomics interventions on the learningactivities in boardinghouse could decrease load of learning significantly (p<0.05): the bodytemperature became normal, the musculoskeletal complaints decreased 44.79%; the levelof boredom decreased 9.79%; the level of fatigue decreased 15.20%; the accuracy ofworking decreased 55.06%; the speed of working decreased 17.32%; the constancy ofworking decreased 30.72%; and the results of working of the students increased 131.44%.It can be concluded that the ergonomics interventions can: decrease the load of learning ofthe students and increase the performance of the students

Redesign of Work Place and System with Ergonomic Intervention Improves the Performance of the Skt (Hand Rolled Cigarette) Rollers at Cigarette Industry “X” in Kediri East Java

In this research ergonomic intervention of the 4 main factors influencingperformance was conducted. The four main factors are : (a) intervention of humancovering the change in position of the SKT rollers from the position of facing oneanother into that of facing the same direction, from the hunchbacked sitting positioninto the upright one; (b) intervention of work equipment covering the changes inform, dimension, table and chair size, and layouts of space and work facilities ; (c)intervention of work system covering the changes in work process arrangement, rightand left hand movement, time allocated for active break and in the removal oftobacco which used to be done by the knockers but now is done by the rollers; (d)intervention of work environment, that is, exhaust installation to regulate thecirculation and wind humidity in the SKT rollers\u27 room. Redesign of place and worksystem with ergonomic intervention contribute to : (a) the decrease in work loadfrom medium category into light category; (b) the decrease in work tiredness frombeing very tired category into being not tired; (c) the decrease in musculoskeletalcomplaint from high category (being disturbed) into light category (beingundisturbed); (d) the decrease in medical treatment cost by 56,97%; (e) the increasein work productivity by 41,47%; (f) the increase in the SKT rollers\u27 salaries by15,10%; and (g) the increase in the company\u27s profit by 12,76%. Generally, redesignof place and work system can increase the performance of the SKT rollers at cigaretteindustry “X” at Kediri, East Java. Therefore, it has been suggested that the companycontinue to redesign the place and work system with ergonomic intervention in theother units

Ergonomic Intervention of Houses Type 36/120 Saves Electricity and Increases Comfort of Occupants in Nuansa Kori Housing Sading Mengwi Badung

Development of the housing sector has now spread to the suburban areas ofDenpasar; even some rural areas in Bali have become targets of housingdevelopers. Designing and arranging of houses through ergonomic interventioncomprises one of several efforts for improving the houses' quality in terms oftheir natural comfort. The ergonomic intervention should meet such criteria as tobe technically applicable, less costly, energy saving especially that of electricity,socio-culturally convenience, and environment friendly. This experimental studybeing reported applied a treatment by subject design, in which eight houses wereselected as sample, located in the housing complex of Perumahan Nuansa KoriSading Mengwi Badung. Of the eight sampled houses, each two houses facednorth, south, east and west, respectively. Twenty six occupants of the eightsampled houses were interviewed using a questionnaire. All samples wereselected by stratified random sampling. The ergonomic intervention comprisedremodeling of ventilation and windows of all the sampled houses. Data collectingof objective comfort was carried out before and after intervention i.e. at 8 am, 10am, 12 pm, 2 pm, 4 pm and 8 pm, by measuring temperature, humidity, lightintensity, and airflow. Data of subjective comfort were collected by questionnaire,which had been tested earlier for its validity and reliability. The results showedthat (1) before intervention the average of wet temperature was 23.66 ± 1.36 ºC,after intervention was 23.09 ± 1.20 ºC; (2) before intervention the average of drytemperature was 28.76 ± 1.07 ºC, after intervention was 27.88 ± 0.73 ºC; (3)relative humidity before intervention was 73.44 ± 4.37 %, after intervention was72.63 ± 2.73 %; (4) natural light intensity before intervention was 134.94 ± 71.69lux, after intervention was 229.69 ± 114.53 lux; (5) the average of airflow beforeintervention was 0.10 ± 0.04 m/sc, after intervention was 0.31 ± 0.08 m/sc; and(6) electricity saving resulted in 11% as evidenced by decrease of electricity billby 8%. The conclusions could be arawn are (1) that ergonomic intervention byremodeling ventilation and windows of houses type 36/120 could improveobjective comfort by 12.4% (p<0.05), along with increase of subjective comfort ofthe occupants of the houses facing all directions; dan (2) moreover, electricitysaving resulted in 11% (p<0.05) as evidenced by decrease of electricity bill by 8%(p<0.05). This study suggests that ergonomic intervention should be applied sinceearly in the construction of houses in order to make them cheaper, healthier, andmore comfortable