scholarly journals CONTRIBUTION OF MOTION STUDY TO STANDARD TIME AT BALL TEA STATION (CASE STUDY PT. MITRA KERINCI, SOUTH SOLOK)

2021 ◽  
Vol 11 (2) ◽  
pp. 92-107
Author(s):  
Aldino Rizki Prayoga ◽  
Meizul Zuki ◽  
Yusril Dany
Keyword(s):  
Standard Deviation ◽  
Cycle Time ◽  
Standard Time ◽  
Motion Study ◽  
Uniformity Test ◽  
Time Calculation ◽  
Calculation Results ◽  
Increase In Productivity ◽  
Flow Map ◽  
Production Target

PT Mitra Kerinci is a company established in West Sumatra Province which is engaged in tea plantations and tea processing in its factories. PT Mitra Kerinci produces an average of 7,000 kg or 7 tons of green tea shoots per day. The production process for processing tea shoots, the factory sometimes does not reach the production target in accordance with the production target of the company. The goal of research  to determine the amount of the contribution of the motion study to the standard time and determine the amount of the contribution of the standard time to the increase in productivity in the final drying process at Ball Tea station, the production of tea shoots at PT. Kerinci Partners. This research an experimental research type and uses the same subject research design (treatment by subject design), namely the treatment is imposed on the same subject. The results of time calculations after the motion study on the process flow map reached 15,676.02 seconds. Then proceed with the calculation of the cycle time which reaches 825.41 seconds with the actual standard deviation obtained at 3.58 and the standard deviation of the subgroup distribution is 1.79. After knowing the results of the average cycle time, the actual standard deviation and the standard deviation of the subgroup distribution, the data uniformity test was continued, starting with calculating the BKA and BKB. The BKA calculation results obtained 830.78 and the BKB reached 820.04. So that in the data uniformity test the results reached 0.908. In the series of movements of the left and right hands after the repair, a cycle time of 825.41 seconds / unit of Ball Tea was obtained from the previous time, reaching 906.66 units / Ball Tea and getting a time difference of 81.25 seconds. In the calculation of the standard time, the normal time calculation is carried out first, after it is known that the result of the adjustment calculation reaches 1.12 so that the normal time is obtained with a total of 924.45 seconds. Continue to calculate the standard time and the results reach 1423.65 seconds with an allowance of 54%. This contributed to an increase in productivity by 5.7%.

scholarly journals PENENTUAN WAKTU BAKU DALAM PEMBUATAN KOTAK ALAT PEMBACA PENGUKURAN MELALUI MOTION STUDY

2019 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
R. Kiki Abdul Muluk
Keyword(s):  
Completion Time ◽  
Standard Time ◽  
Motion Study ◽  
Adjustment Factors ◽  
Time Calculation ◽  
Movement Study ◽  
Product Output

Generally the measurement of standard time is only based on how many product units are produced per unit of time, without regard to the movements carried out by the operator. The movements carried out by the operator in completing the work are very necessary to be evaluated, considering that many of the movements of the operator that are not effective will slow down the completion time of the work, which in turn affects the product output. Movement study is an analysis carried out on several movements of the worker's body in completing work. Through the study of motion the standard time can already be determined by synthesizing the standard times of the parts that have been labeled. Based on the standard time calculation of the results of the motion study, it was obtained the results of 25,988 bowl component units and 84,485 APP lid box components. If 25% of the available time is cut off by the needs of the operator, namely the provision of adjustment factors and the allowance factor for operators of the target of 10,000 APP box units, it is still very possible.

IMPROVEMENT LAYOUT AND ELEMENTS WORK IN ERGONOMIC ASPECTS

2012 ◽  
Vol 2 (2) ◽  
pp. 84-99
Author(s):  
Beci Sariani ◽  
Meizul Zuki ◽  
Yusril Dany
Keyword(s):  
Working Conditions ◽  
Cycle Time ◽  
Completion Time ◽  
Content Creation ◽  
Left Hand ◽  
Total Distance ◽  
Standard Time ◽  
Before And After ◽  
Right And Left Hand

The purpose of this study is to describe layout and elements of the movement labor, determine cake making job completion time before and after repair, complaints of pain workers and recomendation improved layout and elements work in ergonomic aspects. Layout and elements of the cake making job is less visible than ergonomic working conditions with temperatures as high as 290C and 300C, total distance moving much material for the production namely 2407 cm, manufacture molen 180 cm, 2926 cm baking and packaging 626 cm. Percentage of use right and left hand at creation pia cake is 50.11% and 54.4%. Making molen is 100% and 76.69%. Pia cake making is 12.76% and 12.21%. Packaging is 100% and 84.8%. Cycle time, normal time and standard time of content creation, namely 17004.15, 18.534.52 and 25.577.64 seconds (2 basins). Making molen is 560.23, 616.25 and 751.82 seconds (1 basin). Pia cake making is 1.165,45, 1314.63 and 1.603,85 seconds (2 trays), and packaging is 15,40, 16,79 and 23.17 seconds (2 pack). The application of ergonomics : 8 types of grievances felt a bit sick and 1 type of grievances felt sick. Station molen manufacture, workers felt no pain. Baking station pia (sub-stations) only complaint molen rolling on his back felt a little sore. Sub-station charging only 3 workers who feel a little pain complaints and pain. In the sub-station : 6 types pengovenan grievances felt a little sick. The packing station after repairs only felt a little pain in the waist

scholarly journals The Systematic Bias of Entropy Calculation in the Multi-Scale Entropy Algorithm

Entropy ◽  
2021 ◽  
Vol 23 (6) ◽  
pp. 659
Author(s):  
Jue Lu ◽  
Ze Wang
Keyword(s):  
Time Series ◽  
Standard Deviation ◽  
Coarse Graining ◽  
Sample Entropy ◽  
Systematic Bias ◽  
Original Time Series ◽  
Multi Scale ◽  
Calculation Results ◽  
Surrogate Measure ◽  
Original Time

Entropy indicates irregularity or randomness of a dynamic system. Over the decades, entropy calculated at different scales of the system through subsampling or coarse graining has been used as a surrogate measure of system complexity. One popular multi-scale entropy analysis is the multi-scale sample entropy (MSE), which calculates entropy through the sample entropy (SampEn) formula at each time scale. SampEn is defined by the “logarithmic likelihood” that a small section (within a window of a length m) of the data “matches” with other sections will still “match” the others if the section window length increases by one. “Match” is defined by a threshold of r times standard deviation of the entire time series. A problem of current MSE algorithm is that SampEn calculations at different scales are based on the same matching threshold defined by the original time series but data standard deviation actually changes with the subsampling scales. Using a fixed threshold will automatically introduce systematic bias to the calculation results. The purpose of this paper is to mathematically present this systematic bias and to provide methods for correcting it. Our work will help the large MSE user community avoiding introducing the bias to their multi-scale SampEn calculation results.

scholarly journals ANALISIS CAPACITY CONSTRAINED WORKER DENGAN PENDEKATAN WAKTU BAKU, DENYUT JANTUNG DAN PROFILE OF MOOD STATES (STUDI KASUS PADA INDUSTRI TEMPE “MUCHLAR”KASIHAN BANTUL)

2014 ◽  
Vol 34 (03) ◽  
pp. 322
Author(s):  
Maman Zuriwiatma ◽  
Mirwan Ushada ◽  
Guntarti Tatik Mulyati
Keyword(s):  
Room Temperature ◽  
Buffer Management ◽  
Mood States ◽  
Working Environment ◽  
Profile Of Mood States ◽  
Standard Time ◽  
Measurement Results ◽  
Capacity Constrained ◽  
Potential Food ◽  
Production Target

Tempe ”Muchlar” is one the potential food indutry which all the job is pursued manually. The production process is based on the worker capacity. The main problem is the industry could not fulfi ll the production target of half-finished Tempe product of + 3.600 kg.  The research objective is to identify Capacity Constrained Worker using standard time, heart rate, profi le of mood states and recommending the improvement to increase the worker capacity. The measurement results were confi rmed using analysis of working environment. The research results indicated that Capacity Constrained Worker of Tempe Industry was the worker of peeling. It was indicated by the standard time of 5,63 detik/kg that could not fulfi ll the production target of 3.600 kg in 5 work hours. The improvement was pursued by decreasing the room temperature of working station. The improvement could increase the standard time of 5 second/kg, fulfi lling the production target and increasing the income. Finally the improvement using Buffer Management could improve the Capacity Constrained Worker in Tempe Industry “Muchlar”.Keywords: Standard time, Capacity Constrained Worker, production target ABSTRAKTempe ”Muchlar” merupakan salah satu industri pangan yang semua pekerjaannya dilakukan manual sehingga proses  produksinya sangat tergantung kapasitas dari pekerja. Permasalahan muncul karena target produksi tempe setengah jadi sebesar + 3.600 kg tidak tercapai.  Penelitian ini bertujuan untuk mengidentifi kasi Capacity Constrained Worker yang terjadi menggunakan pendekatan waktu baku, denyut jantung, profile of mood states serta menentukan perbaikan yang tepat untuk dapat meningkatkan kapasitasnya. Hasil pengukuran terhadap pekerja dikonfi rmasi dengan analisis keadaan lingkungan kerja. Dari hasil penelitian dapat ditentukan bahwa pekerja yang menjadi Capacity Constrained Worker adalah pekerja stasiun pemisahan kulit. Hal ini dibuktikan dari waktu baku yang diperoleh sebesar 5,63 detik/kg yang membuat target produksi sebesar 3.600 kg dalam 5 jam tidak tercapai. Dengan perbaikan yang dilakukan yaitu menurunkan suhu ruangan dari tinggi ke normal waktu baku pekerja dapat meningkat menjadi 5 detik/kg dan target produksi dapat tercapai serta meningkatkan pendapatan. Perbaikan dengan menerapkan buffer management dapat mengurangi stasiun kerja yang menjadi constraint. Kata kunci: Waktu baku, Capacity Constrained Worker, target produksi

scholarly journals Doubling effort makes up for 6 IQ points

2020 ◽  
Author(s):  
Mikhail Simkin ◽  
Vwani Roychowdhury
Keyword(s):  
Standard Deviation ◽  
Standard Deviation Increase ◽  
Standard Time ◽  
Baseline Test

We report the results of experiments where we compared with the baseline test subjects’ IQs measured in two non-standard ways: by doubling the allotted time and by doubling the manpower. As a baseline, we administered the test the regular way, where we allowed each subject the standard time prescribed in test description to complete the test. We then performed two different experiments. First, we paired the subjects of roughly equal IQ and then asked them to do the test in collaboration within the prescribed time. In the second experiment the subjects did the test solitary but were allowed twice the prescribed time. In both cases, when we doubled the allotted time, or when we doubled the manpower, we got on average a 6 point (0.4 Standard Deviation) increase in measured IQ.

scholarly journals Evaluasi Kinerja Apill dan Geometrik Simpang 3 Sungai Bengkel Kota Bengkalis

2021 ◽  
Vol 18 (2) ◽  
pp. 197-206
Author(s):  
Nursafika Syafika ◽  
Muhammad Idham
Keyword(s):  
Cycle Time ◽  
Slow Motion ◽  
Public Works ◽  
Degree Of Saturation ◽  
Traffic Light ◽  
Traffic Jam ◽  
The North ◽  
Calculation Results ◽  
Bottle Neck ◽  
Intersection Geometry

Third junction of Sungai Bengkel was a Signalized Intersection which a hasn’t have traffic jam ,which has three approach, are North approach, West approach and East approach. However, the alinyemen for the North approach has problems that make it difficult for vehicles, especially four-wheelers to turn because the effect bottle neck resulting in the slow motion of the vehicle and change of phase time . the problem solving, the evalution of traffic light and intersection geometry were carried out by widening  the alinyemen for the North approach and East approaches and doing changes in cycle time. The purpose of evaluating the performance of traffic light and Geometrics at the third intersection of Sungai Bengkel is to determine the value of the degree of saturation and to know the performance of the intersection.At the intersection planning, it refers to the PKJI 2014 for Intersection Performance, while for the Geometrics it refers to Module 4 of the Ministry of Public Works and Public Housing on Geometric Planning of Plane Intersections.Based on  the calculation results of the Sungai Bengkel junction performance indicate that, the degree of  saturation  < 0.85,which is 0.529 for North,  0.537 for East, and 0.570  for West .With the radius is 15 m, and the cycle  time of traffic light 50 second, with the delay time  as long as 17 second/pcu

scholarly journals Influence of bifurcation on thinning, productivity and harvester production costs of Pinus taeda L.

2020 ◽  
pp. 1259-1263
Author(s):  
Carlos Cézar Cavassin Diniz ◽  
Romano Timofeiczyk Junior ◽  
Renato Gonçalves Robert ◽  
Eduardo da Silva Lopes ◽  
João Carlos Garzel Leodoro da Silva ◽  
...  
Keyword(s):  
Pinus Taeda ◽  
Cycle Time ◽  
Production Costs ◽  
Total Production ◽  
Plantation Forest ◽  
Operating Cycle ◽  
Operational Cycle ◽  
Time And Motion ◽  
Motion Study ◽  
Pinus Taeda L

In this work, we present that how bifurcation in Pinus trees can influence productivity and harvester production costs. Our example draws from one harvesting machine that works in thinning operations in forest plantations of Pinus taeda L. in a small Brazilian forestry company. To get daily productivity, we use the machine’s system, which provides such daily information as total production. We also used a time and motion study to obtain the meantime to cut, delimb, and process the tree stem into logs. In this way, we separated the normal trees from the forked trees to get the operating cycle time of the machine and get the productivity to the two types of trees. The continuous timing method was used for this purpose. The results show an increase of up to 22.9% in the operational cycle time for cutting forked trees, resulting in reduction of productivity of 5.58 m³ for each hour worked. The production cost increased by 23.3% on operation of forked trees, as the machine took more time to perform the partial activities of the operational cycle. This study can help many companies and contractors to calculate the appropriate productivity and production harvest cost according to the type of tree stems from the plantation forest.

scholarly journals Study on Importance of Employee Performance Assesment and Lost Productive Time Rate Determination in Garment Assembly Lines

2017 ◽  
Vol 25 (0) ◽  
pp. 119-126 ◽  
Author(s):  
Mahmut Kayar ◽  
Öykü Ceren Bulur
Keyword(s):  
Performance Assessment ◽  
Assembly Line ◽  
Employee Performance ◽  
Assembly Line Balancing ◽  
Line Balancing ◽  
Assembly Lines ◽  
Standard Time ◽  
Productive Time ◽  
Production Target

This study primarily includes theoretical information on the performance and lost productive time of a firm. Furthermore t-shirt sewing operations of a garment firm were analysed and time measurement for each operation was carried out by the time keeping method. By considering the measurements obtained, different performance estimations, the firm’s lost productive time rates, and the standard time was calculated within 5 different scenarios. According to each sewing standard time obtained, the assembly line balancing practice was carried out using the Hoffman method. Later on results of the assembly line balancing were compared, and the importance of employee performance assessment and its lost productive time rates for firms were discussed. The aim of the study was to emphasize the value of impeccable determination of the employee performance assessment and lost productive time rates. Consequently garment firms will be more cautious in calculating the standard time and will be able to reach their production target within the accurate measurement they obtain.

A Dynamically Optimized Fluctuation Smoothing Rule for Scheduling Jobs in a Wafer Fabrication Factory

2011 ◽  
Vol 7 (4) ◽  
pp. 47-64 ◽  
Author(s):  
Toly Chen
Keyword(s):  
Standard Deviation ◽  
Test Data ◽  
Cycle Time ◽  
Performance Metrics ◽  
The Other ◽  
Wafer Fabrication ◽  
Fluctuation Smoothing ◽  
Time Standard ◽  
Nonlinear Fluctuation ◽  
Better Than

This paper presents a dynamically optimized fluctuation smoothing rule to improve the performance of scheduling jobs in a wafer fabrication factory. The rule has been modified from the four-factor bi-criteria nonlinear fluctuation smoothing (4f-biNFS) rule, by dynamically adjusting factors. Some properties of the dynamically optimized fluctuation smoothing rule were also discussed theoretically. In addition, production simulation was also applied to generate some test data for evaluating the effectiveness of the proposed methodology. According to the experimental results, the proposed methodology was better than some existing approaches to reduce the average cycle time and cycle time standard deviation. The results also showed that it was possible to improve the performance of one without sacrificing the other performance metrics.

A Productivity Improvement of a Cookware Assembly Line

2015 ◽  
Vol 799-800 ◽  
pp. 1398-1402 ◽  
Author(s):  
Jongrak Niamsawan ◽  
Suksan Prombanpong
Keyword(s):  
Cycle Time ◽  
Assembly Line ◽  
Line Balancing ◽  
Productivity Improvement ◽  
Motion Study ◽  
Machine Layout ◽  
Workplace Organization ◽  
Bottle Neck ◽  
Assembly Operations ◽  
Working Method

This research objective is to improve the productivity of cookware assembly line by means of time and distance reductions. The motion study and line balancing techniques were applied to the entire assembly operations. A bottle neck was identified to where the operation with inadequate machine layout and workplace organization, including the unbalanced workloads. The new workplace layout and new working method for operators were designed and implemented as well as balancing the assembly line. Specifically, the conveyor speed and duration between the consecutive workpieces in the production line were adjusted to 0.10 m/s and 50 cm, respectively. The number of operators needed in the process can be reduced from 14 persons to 11 persons. The cycle time for assembling process is decreased from 12 to 5 second.

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