scholarly journals The Analysis of Delayed Duration Caused by Unpredictable Factors in Pammukkulu Dam

2021 ◽  
Vol 921 (1) ◽  
pp. 012083
Author(s):  
D J A Fatkhurrahman ◽  
R U Latief ◽  
S Burhanuddin
Keyword(s):  
Supply Chain ◽  
Research Methodology ◽  
Critical Path ◽  
Working Hours ◽  
Critical Path Method ◽  
Qualitative And Quantitative ◽  
Manpower Supply

Abstract This study aims is to find the critical path which caused delay on the projects. Several factors which may affect to the delay are the weather, the lack of manpower, supply chain, equipment and so on. The research methodology was conducted to elaborate the causes are by using qualitative and quantitative researches. Over 35 respondents and 10 expert’s interviewee fill the questioner and were collected within two months. The result obtained is accelerated 3 paths from critical path method (CPM) then calculated the crashing program for each alternative. The alternative of acceleration applied are add the working hours in 4 (four) hours and 7 (seven) hours. In the end, the addition of 4 (four) hours could increase the workforce up to 25% of the total number of workers to get the value of accelerated finishing projects without ignoring the quality and quantity of them. Also, the additional labour is more beneficial in terms of costs they have relativity small number of working hours and would be more efficient.

Pipe Transmission Project Planning Using What If Analysis Method

2017 ◽  
Vol 862 ◽  
pp. 296-301
Author(s):  
Silvianita ◽  
Amalia Herdianti Winda ◽  
Mulyadi Yeyes ◽  
Suntoyo
Keyword(s):  
Critical Path ◽  
Working Hours ◽  
Project Planning ◽  
Gas Pipeline ◽  
Analysis Method ◽  
Critical Path Method

In order to succeed Indonesia’s mission to provide 23.000 MegaWatt, the gas pipeline transmission has been built. The Project consists of many activities that related to each other, If one of the activities are having a problem that caused a delay, then the succeeding activities will get affected and could cause a project’s delay. To anticipate, it needs the acceleration of the project’s activity. In this case, the pipe transmission project would cause a 7 day delay. To accelerate it, this study gives the calculation, using “What If Analysis Method” on “Critical Path Method”. The acceleration actions are treated in accordance with providing extra working hours and the certain amount of manpower in the succeeding activities.

scholarly journals Penerapan Metode CPM Dan PERT Pada Gedung Parkir 3 Lantai Grand Panglima Polim Kediri

2020 ◽  
Vol 3 (2) ◽  
pp. 162
Author(s):  
Tsalist Iluk ◽  
Ahmad Ridwan ◽  
Sigit Winarto
Keyword(s):  
Program Evaluation ◽  
Calculation Result ◽  
Critical Path ◽  
Working Hours ◽  
Critical Path Method ◽  
Know How ◽  
The Difference ◽  
The Cost ◽  
The Relationship

The project is an activity carried out to products or services that have specific scheduling. Scheduling is determined by the relationship between activities made very detailed and accurate. Therefore, the purpose of the final task is to know how to implement the Critical Path Method (CPM) and Program Evaluation and Review Technique (PERT) in scheduling the project, which originally used the Bar Chart method with a duration of 140 days and resulted in a cost of Rp. 5.500.000.000. From the calculation result of this final task in using the CPM, the method generates a period of 105 days and provides cost after crashing in the labor increase of Rp. 5.568.464.052 and the increase in working hours (overtime) Rp. 5.603.725.490. While using the PERT method generates a period of 109 days and generates the cost after being crashing in the labor increase of Rp. 5.574.721.755 and the increase of working hours (overtime) of Rp.5.612.082.633 with a projected probability of reaching the target of 84 %. Has a comparison with the difference in cost of Rp. 6,257,703 in increased workforce and Rp. 8,357,143 other than working hours.Proyek merupakan suatu kegiatan yang dilakukan untuk menghasilkan produk / jasa yang mempunyai penjadwalan tertentu. Penjadwalan ditentukan oleh hubungan antar kegiatan yang dibuat sangat rinci dan akurat. Oleh karna itu tujuan dari artikel ilmiah ini adalah untuk mengetahui bagaimanakah penerapan metode Critical Path Method (CPM) dan Program Evaluation and Review Technique (PERT) pada penjadwalan proyek tersebut yang awalnya  menggunakan metode Bar Chart dengan durasi waktu 140 hari dan menghasilkan biaya sebesar Rp.5.500.000.000. Dari hasil perhitungan artikel ilmiah ini dalam menggunakan metode CPM menghasilkan jangka waktu 105 hari dan mengasilkan biaya setelah di crashing dalam penambahan tenaga kerja sebesar Rp. 5.568.464.052 dan penambahan jam kerja (lembur) Rp.5.603.725.490 Sedangkan menggunakan metode PERT menghasilkan jangka waktu 109 hari dan menghasilkan biaya setelah dicrashing  dalam penambahan tenaga  kerja  sebesar  Rp. 5.574.721.755  dan penambahan   jam kerja (lembur) Rp. 5.612.082.633. dengan probabilitas proyek  mencapai target 84%. Mempunyai perbandingan selisih biaya sebesar Rp. 6.257.703 dalam penambahan tenaga kerja dan Rp. 8.357.143 dalam penambahan jam kerja.

scholarly journals Analisa Infrastruktur Desa Sukaci-Baros Dengan Metode Critical Path Method (CPM)

2017 ◽  
Vol 1 (1) ◽  
pp. 35
Author(s):  
Ahmad Nalhadi ◽  
Nana Suntana
Keyword(s):  
Critical Path ◽  
Working Hours ◽  
Development Project ◽  
Optimal Time ◽  
Infrastructure Development ◽  
Critical Path Method ◽  
Construction Company ◽  
The Difference ◽  
Critical Paths ◽  
The Cost

CV. ABP a construction company worked in infrastructure building development for private and goverment. Now CV. ABP is handling infrastructure development project of the acropolitan area (Right Payment) Sukaci - Baros Village. This project has been late for 19 days from the dead line 126 days. Therefore the cost is getting higher. It’s happened because bad management is the problem source. Restoring the project time need to be focused on the cost and the due date based on the schedule. Scheduling evaluation using Critical Path Method (CPM) and Crashing to find optimal results using Critical Path Method (CPM) can be found the critical paths activity, there are ground digging , bopflang installation, stone installation, agregrate B agrgregation , aggregate A flatting, rigit bavement work, and refining, when the time suppression obtained optimal time results from 126 days to 92 days. It taken an alternative to the addition of working hours with duration 92 day after the crashing. Using two alternatives, additional working hours and the addition of workforce, obtaining the difference of extra hours of work cost Rp 80.128.125 and labourcost increase Rp 55.260 from the regular cost.

scholarly journals Aging and Women’s Sexuality

2014 ◽  
Vol 4 (3) ◽  
pp. 279-287
Author(s):  
Bárbara Luque Salas
Keyword(s):  
Focus Groups ◽  
Older Women ◽  
Research Methodology ◽  
Quantitative Data ◽  
Research Team ◽  
Qualitative Difference ◽  
Feminist Research ◽  
Sexual Life ◽  
Sexual Practice ◽  
Qualitative And Quantitative

We present results of our research, which has been aimed at understanding the experience, practice, and sexual life in women over 50 years of age. We studied a sample of 729 women of between 50 and 80 years of age. The research is part of qualitative feminist research methodology. Both qualitative and quantitative data have been collected through focus groups and a questionnaire drawn up by our research team. The results show the satisfaction of older women-of all ages-with their sex life and the importance of contextual and relational sexuality issues of women. Autoeroticism is the most established sexual practice in this group of older women and highlights who want to experience some changes in their current sex life around the desire for a more sensual and emotional sexuality, with a claim of more passionate and frequent relations. The data collected reveal a qualitative difference in the reality of sex over the age of 70.

scholarly journals Modeling and Optimization Sustainable Forest Supply Chain Considering Discount in Transportation System and Supplier Selection under Uncertainty

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 964
Author(s):  
Komeyl Baghizadeh ◽  
Dominik Zimon ◽  
Luay Jum’a
Keyword(s):  
Supply Chain ◽  
Working Hours ◽  
Mixed Integer ◽  
Forest Industry ◽  
Northern Iran ◽  
Suggested Approach ◽  
Tactical Decisions ◽  
Environmental Goals ◽  
Forest Supply Chain ◽  
The Impact

In recent decades, the forest industry has been growingly expanded due to economic conditions, climate changes, environmental and energy policies, and intense demand changes. Thus, appropriate planning is required to improve this industry. To achieve economic, social and environmental goals, a supply chain network is designed based on a multi-period and multi-product Mixed-Integer Non-Linear Programming (MINLP) model in which the objective is to maximize the profit, minimize detrimental environmental effects, improve social effects, and minimize the number of lost demands. In addition, to improve forest industry planning, strategic and tactical decisions have been implemented throughout the supply chain for all facilities, suppliers and machinery. These decisions significantly help to improve processes and product flows and to meet customers’ needs. In addition, because of the presence of uncertainty in some parameters, the proposed model was formulated and optimized under uncertainty using the hybrid robust possibilistic programming (HRPP-II) approach. The -constraint technique was used to solve the multi-objective model, and the Lagrangian relaxation (LR) method was utilized to solve the model of more complex dimensions. A case study in Northern Iran was conducted to assess the efficiency of the suggested approach. Finally, a sensitivity analysis was performed to determine the impact of important parameters on objective functions. The results of this study show that increasing the working hours of machines instead of increasing their number, increasing the capacity of some facilities instead of establishing new facilities and expanding the transport fleet has a significant impact on achieving predetermined goals.

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