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All Journal Jurnal Pengabdian Magister Pendidikan IPA International Journal Science and Technology (IJST) International Journal of Industrial Innovation and Mechanical Engineering International Journal of Mechanical, Electrical and Civil Engineering
Laksono Djoko Nugroho
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Astronomy Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering

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ANALYSIS OF INVESTMENT SENSITIVITY IN RUSUNAWA TAMBAK WEDI CITY SURABAYA Mawardianto, Hayadi Agus; Laksono Djoko Nugroho; Haris Muhammadun
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1098

Abstract

Based on the Surabaya City RPJMD for 2021-2026, strategic issues in government affairs in the field of housing and residential areas focus on providing Rusunawa capacity which is not proportional to the number of applicants. To overcome this problem, the Surabaya City Government took the initiative to build Rusunawa Tambak Wedi in the City of Surabaya. This research aims to evaluate the amount of investment receipts and determine the acceptance limits, with the aim of minimizing risks in Rusunawa investment activities. The research results show that the Medium Tariff Structure 1, Lower Tariff Structure 1, and Lower Tariff Structure 2 are considered feasible if analyzed based on the Net Present Value (NPV), Internal Rate of Return (IRR), Benefit Cost Ratio (BCR), and Payback Period methods. (PP) but the Medium Tariff Structure 2 and the Upper Tariff Structure were declared unfeasible if analyzed using the same method. Sensitivity analysis shows that each Rusunawa rental rate structure has a different level of sensitivity to changes in variables, such as residential unit rental rates, management fees, and management fee subsidies provided by the Government.
SCHEDULING ANALYSIS IN CONSTRUCTION WITH THE PERT METHOD USING MICROSOFT PROJECT Prasetyo, Baskoro Adhi; Haris Muhammadun; Laksono Djoko Nugroho
International Journal Science and Technology Vol. 2 No. 3 (2023): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v2i3.1099

Abstract

Since 2017, the Drinking Water Supply System (SPAM) of the Capital District (IKK) Ibu has not been functioning due to damage to the pipe network due to road widening work, damage to generators and pumps, thus PDAM West Halmahera will build a new SPAM network system with a gravity system and will analyze scheduling using the Program Evaluation and Review Technique (PERT) method using Microsoft Project 2021 to carry out development planning which has results where the time required for construction is 320 days and can be completed with a percentage level of 95.35%, with a critical path found in the implementation work occupational health and safety, preparation, piping work, procurement and installation of house connections and commissioning test work with a time of 273 days.
ANALYSIS OF INVESTMENT IN THE DEVELOPMENT OF THE WATU ULO FISHERY PORT IN JEMBER DISTRICT REVIEWED FROM FINANCIAL ASPECTS AND SENSITIVITY ASPECTS Ratuinsani, Tati Mushalihati; Haris Muhammadun; Laksono Djoko Nugroho
International Journal Science and Technology Vol. 3 No. 2 (2024): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v3i2.1254

Abstract

Watu Ulo Beach is a concentration of fishing communities as a place to fill supplies to catch fish at sea and as a landing place for fish catches. The local government intends to build a fishing port in Watu Ulo to improve facilities and infrastructure for fishermen in catching fish. This study aims to determine the feasibility of investment in the development of fishing ports in terms of financial aspects and sensitivity. The research method uses three scenarios for the value of income, namely the pessimistic scenario, moderate scenario, optimistic scenario. The results of the financial feasibility analysis using the NPV, IRR, BCR, and PP methods were declared feasible for the moderate scenario and optimistic scenario while the pessimistic scenario analysis results were not feasible because the IRR (6.15%) < MARR (7.72%) The results of the sensitivity analysis stated that with three scenarios on the Value of Revenue and Operating Costs obtained the results of Sensitivity The value of revenue for the pessimistic scenario is sensitive at -13.67% if it is smaller than that the investment becomes unfeasible. The revenue value for the moderate sensitive scenario is -39.96% if it is smaller than that the investment becomes unfeasible. The value of income for an optimistic scenario is sensitive at -40.75% if it is smaller than that, the investment becomes unfeasible. The revenue value for the optimistic scenario is sensitive at -40.75%, if it is smaller than that, the investment is not feasible. And if the Operating Cost Sensitivity for the pessimistic scenario is sensitive at -15.96%, if it is smaller than that, the investment is not feasible. Operating Costs for a moderate sensitive scenario at +22.67% if it is greater than that, the investment becomes unfeasible. Operating Costs for the optimistic scenario are sensitive at 25.59% if greater than that then the investment becomes unviable.
Uji Sertifikasi Manajer Lapangan Pelaksanaan Bangunan Gedung Bagi Calon Wisudawan Prodi Jenjang D4 Sebagai Surat Keterangan Pendamping Ijazah Tjendani, Hanie Teki; Risma Marleno; Esti Wulandari; Laksono Djoko Nugroho; Shinta Berlinda Wulandari; Aviska Triayaska
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 4 (2024): Oktober-Desember 2024
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i4.9964

Abstract

Every construction worker engaged in the construction services field must have a Work Competency Certificate (Sertifikat Kompetensi Kerja Konstruksi/SKK Konstruksi). Every owner and service provider must employ construction workers with an SKK Konstruksi. Construction Service work contracts must include the use of certified construction workers. The SKK-K is a mandatory requirement for working in the construction services sector. This paper will discuss the competency assessment activities conducted by recent D4 graduates to obtain a work competency certificate for the job position of Building Execution Field Manager Level 6. This serves as a graduation requirement and as a Supplementary Diploma Certificate (SKPI; surat keterangan pendamping ijazah). In this assessment, all assessors passed and were declared competent. The students' capabilities are supported by fieldwork practice activities, which are included in the curriculum of their respective study programs. The students have passed the competency assessment, meaning that upon graduation, they already hold both a diploma and a Work Competency Certificate
Analysis of Reservoir Water Storage and Management in the SIER Industrial Zone Muchamad Idam Choliq; Esti Wulandari; Laksono Djoko Nugroho
International Journal of Industrial Innovation and Mechanical Engineering Vol. 2 No. 1 (2025): February: International Journal of Industrial Innovation and Mechanical Enginee
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijiime.v2i1.146

Abstract

This study analyzes the water storage capacity and operational patterns of reservoirs in the Surabaya Industrial Estate Rungkut (SIER) to support efficient and sustainable water resource management. The research adopts a quantitative approach by collecting hydrological data, analyzing storage capacity, and simulating reservoir operations based on seasonal scenarios. The findings indicate that SIER's reservoirs have sufficient capacity to meet industrial water demands, although a supply deficit occurs for four months annually. Technical optimization efforts, such as sediment dredging, have proven to increase storage capacity by more than 200%. Practical recommendations for reservoir management include sedimentation normalization and planned operational strategies. These findings are expected to serve as a reference for other industrial zones in addressing water management challenges due to climate variability and increasing industrial demands.
Risk Management Analysis in the Implementation of Building Construction Projects Titin Rahayuningsih; Laksono Djoko Nugroho; Haris Muhammadun
International Journal of Mechanical, Electrical and Civil Engineering Vol. 2 No. 1 (2025): International Journal of Mechanical, Electrical and Civil Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v2i1.141

Abstract

This research aims to identify risks and determine responses to risks that can affect the implementation of the Bojonegoro Regency Oncology Specialised Hospital Construction Project Phase 2. The research was conducted using literature study and field study methods. Primary data was obtained through documentation, field surveys, and interviews, while secondary data included the Cost Budget Plan (RAB), project schedule, and weekly project reports. Sampling was conducted using the Slovin technique to obtain a representative number of respondents. The results showed that there were 31 relevant risk variables, grouped into 8 categories, namely force majeure, material, equipment, labour, contractual, construction, design and technology, and management risks. Significant risks were identified using the Severity Index method, which measures probability and time impact. The results of the risk analysis using the severity index method showed that there were 24 risks included in the low risk level, 3 risks included in the medium risk level, and 2 risks included in the high risk level.
Capacity Building and Sustainability Efforts Water Resources Muchamad Idam Choliq; Esti Wulandari; Laksono Djoko Nugroho
International Journal of Mechanical, Electrical and Civil Engineering Vol. 2 No. 1 (2025): International Journal of Mechanical, Electrical and Civil Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v1i1.147

Abstract

Increasing the capacity and sustainability of water resources are major challenges in reservoir management, especially in areas that are highly dependent on water resources for domestic, agricultural, and industrial needs. The Sier Reservoir, which plays a vital role in providing water to the surrounding area, has experienced a decline in capacity due to sedimentation, uncontrolled flow, and changes in rainfall patterns due to climate change This study aims to identify optimization efforts that can increase the capacity of the sier reservoir and ensure the sustainability of its water resource management. The methodology used in this study includes literature studies, field observations, surveys, interviews with relevant stakeholders, and quantitative data analysis. The results of the study indicate that technical measures such as sedimentation cleaning, infrastructure improvements, and the implementation of technology-based monitoring systems can increase reservoir capacity.
Co-Authors Aviska Triayaska Esti Wulandari Hanie Teki Tjendani, Hanie Teki Haris Muhammadun Mawardianto, Hayadi Agus Muchamad Idam Choliq Prasetyo, Baskoro Adhi Ratuinsani, Tati Mushalihati Risma Marleno Shinta Berlinda Wulandari Titin Rahayuningsih