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I Made Ardi Sudestra
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journal@undiknas.acid
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+6282236805788
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journal@undiknas.ac.id
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Universitas Pendidikan Nasional Jl. Bedugul No.39, Sidakarya, Denpasar, Bali 80225
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INDONESIA
Jurnal Ilmiah Telsinas Elektro, Sipil dan Teknik Informasi
ISSN : -     EISSN : 26215276     DOI : 10.38043
Papers published in this journal focus on or are related to the fields of Civil Engineering, Electrical Engineering, Informatics, and their sub-fields: Structure, Transportation, Geotechnical, Water Resources, Construction Management, Environmental, EngineeringPower/Energy System, Information Systems, Electronics, Control System, Computer system.
Articles 10 Documents
Search results for , issue "vol 9 no 1 (2026)" : 10 Documents clear
Cash Flow Analysis for Financial Control in the SDN 6 Kuta Building Construction Project I Gede Wahyu Adi Putra; Ida Ayu Cri Vinantya Laksmi; Kadek Windy Candrayana
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7492

Abstract

The construction industry plays a significant role. Construction projects carry a high level of risk, particularly in financial management and in balancing cash flow between revenue and expenditure. This study aims to analyze cash flow and evaluate the financial condition of the SDN 6 Kuta building construction project based on the schedule. The method used is descriptive quantitative, utilizing secondary data in the form of the Implementation Budget Plan, time schedule, and project progress reports. The results indicate that the project's Implementation Budget Plan Rp 1,975,413,914, with a payment system in installments and a 10% down payment. An analysis of the existing cash flow indicates a cash flow imbalance. In some periods, particularly until the middle of the project, cash outflows exceeded cash inflows, resulting in a deficit (overdraft), requiring the contractor to use personal funds to maintain the project. The implementation of alternative policies, such as increasing the down payment to 25% and adding additional funding sources, resulted in a more stable cash flow pattern, with cash receipts tending to exceed expenditures for most of the project period. Although the profit under the existing policy is higher at 12.58% compared to the alternative policy at 9.45%, the alternative policy is considered more optimal because it reduces the risk of overdrafts and improves the project's financial stability. Therefore, proper cash flow management through adjustments to payment systems and funding strategies significantly impacts the success of construction projects, not only in terms of profitability but also in terms of liquidity and project sustainability.
Analysis of Drainage Channel Dimensions at Villa Terracotta in Badung Regency I Ketut Soriarta; I Putu Dwikarna Putra
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7494

Abstract

The development of Villa Terracotta in Ungasan Village, South Kuta District, Badung Regency faces potential water ponding problems due to a drainage system that does not conform to the existing topographic conditions. This study aims to evaluate drainage capacity and design an appropriate channel dimension to prevent overflow. The research applies a quantitative approach using hydrological and hydraulic analysis. Design rainfall was determined using the Gumbel distribution after conducting Smirnov–Kolmogorov and Chi-square goodness-of-fit tests. Rainfall intensity was calculated using the Mononobe method, while hydraulic performance of the drainage system was simulated using the EPA-SWMM model. The study area covers 0.27 ha with elevations ranging from 109.5 m to 111.5 m above sea level. The calculated rainfall intensity ranges from 24.84 mm/h for a 2-year return period to 54.78 mm/h for a 50-year return period with a rainfall duration of 1 hour. Simulation results show that the downstream channel has a maximum flow depth of 0.43 m. A channel dimension of 0.30 m width and 0.55 m height produces a freeboard of 27.9%, which falls within the recommended safety range of 5%–30%, indicating that the designed channel is hydraulically safe against overflow.
Risk Management In The Flood Control Project Of Tukad Unda, Klungkung Regency I Ketut Mahardika Putra; Ni Kadek Sri Ebtha Yuni; Luh Putu Prativi Putri Suardika
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7578

Abstract

The Tukad Unda Flood Control Project was implemented to support river normalization and spatial planning efforts aimed at reducing flood risks in Klungkung Regency. However, the project faces significant challenges due to its location in flood-prone, swamp, and coastal areas, which increase the likelihood of risks during construction. This study aims to identify potential project risks, assess risk acceptance levels, develop appropriate mitigation strategies, and allocate risk ownership among stakeholders. A mixed-method approach combining quantitative and qualitative descriptive analysis was employed. Primary data were collected through surveys and group discussions, while secondary data were obtained from relevant literature. Respondents were selected using purposive sampling based on their professional roles and experience in the project, representing owners, consultants, and contractors. A total of 37 risk variables were identified and analyzed using validity and reliability tests to ensure data consistency. The results indicate four levels of risk acceptance: unacceptable (2.70%), undesirable (37.84%), acceptable (37.84%), and negligible (21.62%). Fifteen dominant risks were identified, requiring mitigation through risk avoidance and risk reduction strategies. These findings highlight the importance of experience-based risk assessment in improving the effectiveness of construction project management.
Aggregate Gradation Influence on Marshall and Stiffness of AC-WC Mixtures I Wayan Putra Jayantara Jayantara; Wenny Herdianti; I Gede Wyana Lokantara; Anggiat Daniel Anderson Munthe; Rizky Simanjuntak
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7580

Abstract

Aggregate gradation plays an important role in determining the performance of asphalt mixtures used in road pavement structures. Numerous studies have investigated the influence of aggregate gradation on Marshall characteristics and volumetric properties of asphalt mixtures. However, limited studies have examined the combined effect of aggregate gradation variations within the specification limits on both Marshall characteristics and stiffness performance of AC-WC mixtures. In addition, the influence of proportional gradation variations across the specification envelope has not been widely discussed. Therefore, this study aims to investigate the influence of aggregate gradation variations within the specification limits of Asphalt Concrete Wearing Course (AC-WC) on optimum asphalt content, Marshall characteristics, and mixture stiffness. Five aggregate gradation variations were prepared using the proportional method based on gradation limits. Laboratory tests were conducted using Marshall testing and Indirect Tensile Stiffness Modulus (ITSM) to evaluate mixture performance. The results show that aggregate gradation significantly affects the optimum asphalt content and mechanical characteristics of the mixture. Finer aggregate gradation increases the aggregate surface area and requires higher asphalt content. The optimum asphalt content for different gradation variations ranged from 5.7% to 6.3%. In addition, finer gradation produced lower air voids (VIM) and resulted in higher Marshall stability and mixture stiffness. These findings indicate that aggregate gradation has a significant influence on the volumetric and mechanical properties of AC-WC mixtures.
Contact Angle Based Dielectric Strength Enhancement of Contaminated Ceramic Insulators Using Epoxy-SiO2 Coating Martini Martini; Yusreni Warmi; Sitti Amalia
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7047

Abstract

This study evaluates the effectiveness of epoxy-SiO2 coatings in enhancing the dielectric strength of contaminated ceramic insulators through contact angle analysis. Insulators in tropical regions, such as the 150 kV Koto Panjang-Payakumbuh line, often suffer from performance degradation due to moss contamination and high humidity, leading to reduced hydrophobicity and an increased risk of flashover. Contact angles were measured using the sessile drop method before and after coating. Uncoated insulators exhibited hydrophilic behavior with contact angles below 90° (53.81°, 72.70°, and 60.14°). Pure epoxy improved the values to 87.52°, 91.62°, and 85.94°, indicating partial hydrophobicity. The addition of SiO2 nanoparticles further increased the values above 100° (100.26°, 99.33°, and 101.33°). Based on the empirical correlation between contact angle and dielectric strength, dielectric performance improved from 124.4 kV/cm (uncoated) to 176.7 kV/cm (epoxy) and 200.4 kV/cm (epoxy-SiO2). The novelty of this work lies in demonstrating, for the first time, the comparative effectiveness of epoxy and epoxy-SiO2 coatings under real tropical contamination conditions. These findings confirm that epoxy-SiO2 coatings not only improve hydrophobicity but also provide a homogeneous protective layer, thereby reducing leakage current and strengthening dielectric endurance. The results highlight a cost-effective preventive maintenance strategy with both scientific and practical contributions for high-voltage transmission systems in tropical environments.
IoT-Based Image Segmentation and Fuzzy Mamdani for Ceramic Insulator Contaminant Identification Rahul Maryulis Putra; Yusreni Warmi; Arif Handika
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7071

Abstract

Ceramic insulators on 150 kV transmission lines are prone to contamination from dust and moss, which can degrade insulation performance and increase the risk of system failure. This study aims to identify insulator contaminants using image processing techniques and Mamdani fuzzy logic integrated with an Internet of Things (IoT) platform to assess the dielectric strength of 150 kV ceramic insulators. The method involves capturing images of the insulator surface using a monocular digital microscope, applying OpenCV-based image processing for segmentation and quantification of contamination, and classifying contamination levels using Mamdani fuzzy logic. The results show that the system can accurately detect the percentage of dust and moss contamination. The processed image data are used as input to the fuzzy system to determine the dielectric strength of the insulator. Simulations demonstrate consistent classification of contamination into three levels: low, medium, and high. The system is integrated with the Ubidots IoT platform for real-time monitoring of insulator conditions. As contamination levels increase, the insulator's breakdown voltage decreases, with dust having a greater impact than moss, especially under high humidity conditions. The dielectric strength ranges from 45 kV to 110 kV, with values below 60 kV considered critical.
Analysis of Distribution Network Disruptions Using Fault Tree Analysis: A Case Study of the Bandung Feeder at PT. PLN Bengkalis Nanang Rizkiawan; Zainal Abidin
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7556

Abstract

The electricity distribution network plays an important role in distributing electrical energy from substations to customers. At the Bandung PT. PLN (Persero) ULP Bengkalis feeder, there are still disruptions that cause blackouts and reduce service quality. This study aims to analyze the causes of disruptions using the Fault Tree Analysis (FTA) method to identify the dominant factors and root causes. The methods used include literature studies, observations, interviews, and data collection on disruptions from January 2025 to Desember 2025 This study was motivated by the limitations of previous studies, which generally used Fault Tree Analysis (FTA) only in a descriptive manner without a quantitative approach and did not consider the influence of local factors on power distribution network outages. Therefore, this study aims to develop a semi-quantitative, probability-based FTA approach and to examine the characteristics of outages in the Bengkalis region. The scientific contribution of this study lies in the integration of probabilistic analysis into FTA and the strengthening of risk-based recommendations to improve the reliability of the electrical distribution system. Animals such as birds, squirrels, or other creatures can cause disruptions by coming into contact with or bridging conductors, which can potentially cause short circuits. The high frequency of interactions between electrical networks and their surroundings, combined with a lack of monitoring and protection of the networks, makes these two factors more significant than other causes. When comparing internal and external disruptions, it is evident that external disruptions account for a larger proportion—approximately 59% of total disruptions—while internal disruptions account for about 41%. This confirms that the reliability of the distribution system in the study area is more heavily influenced by external factors than by the technical condition of the equipment itself.
The Influence of Subak Farmer Groups on Weir Intake Operations Ida Bagus Gede Indrayana; Luh Ayu Putri Wedayanti Pulasari; I Wayan Shanjaya Dharmaputra
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7584

Abstract

Subak is a traditional irrigation management system in Bali that integrates social, religious, and technical dimensions within agricultural practice through collective agreements among farmers. This study examines the influence of Nabdab Yeh, the water allocation mechanism employed by the Subak institution on the intake operation of Mambal Weir, which supplies irrigation water to 43 Subak units within the Tukad Ayung Irrigation Area. Quantification Analysis I was applied to assess the impact of four principal determinants, namely antecedent precipitation, ponding depth, water demand, and Paddy cultivation percentage. Each determinant was systematically categorized and converted into binary variables to formulate a predictive model. The resulting model yielded an R-total value of 0.78, indicating a strong correlation and high predictive accuracy. Partial correlation analysis revealed that antecedent precipitation (R-partial = 0.515) exerted the most dominant influence, followed by ponding depth (0.470), while water demand (0.249) and Paddy percentage (0.220) demonstrated comparatively lower significance. These findings affirm that climatic and hydrological conditions constitute the primary determinants governing intake operations, whereas agricultural cropping patterns function as an adaptive response to prevailing water availability. The developed model provides a scientific basis for adaptive irrigation management while sustaining the local ecological wisdom inherent to the Subak system.
Sedimentation Dynamics and Sustainable Lake Management: Integrating Bathymetric Analysis and Tri Hita Karana in Lake Tamblingan Luh Ayu Putri Wedayanti Pulasari; I Dewa Ayu Meia Damayanthi; Ni Luh Putri Prabandari
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7585

Abstract

Lakes play an important role in supporting freshwater resources, ecosystems, and socio-cultural activities. However, increasing sedimentation has become a major environmental issue that can affect lake morphology and ecological functions. This study aims to analyze sediment accumulation in Lake Tamblingan and interpret its implications using the Tri Hita Karana framework. Bathymetric surveys were conducted using a Midas Valeport single-beam echosounder with 200 m transect spacing. The data were processed using Civil 3D and ArcGIS to generate bathymetric maps for 2023 and 2024, and sediment thickness was estimated through depth comparison. The results show that Lake Tamblingan experienced sediment accumulation reaching approximately 1,56 m, indicating a significant lake shallowing process. This condition may reduce lake storage capacity, increase turbidity, and potentially affect ecological stability as well as socio-cultural activities surrounding the lake. Integrating bathymetric analysis with the Tri Hita Karana perspective highlights the importance of holistic lake management that considers environmental, social, and spiritual dimensions.
Analysis of Delay Factors Leading to Contract Disputes in Construction Projects: A Case Study of Badung Regency I Putu Kresna Suputra Kresna; I Gede Fery Surya Tapa; I Ketut Sutapa
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7589

Abstract

In every construction project implementation, what is often a source of problems and disputes is project delays where debates about who and what are the causes and also demands between the owner and the implementer. This study aims to identify the factors causing delays that have the potential to cause disputes. The method used is descriptive statistical analysis. After obtaining the factors causing delays that have the potential to cause disputes, the second stage questionnaire was distributed again to see the level of agreement of each cause of project delays that have the potential to cause disputes. The results of this study found 53 variables that were successfully identified as causes of construction project delays that have the potential to cause disputes. For the results of the factor analysis, it was found that the most dominant factor causing construction project delays that have the potential to cause disputes was the coordination, control and evaluation of work. The coordination, control and evaluation of work factors had the largest percentage variance value among the other formed factors, amounting to 49.914%.

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