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A DECADE TEMPORAL EVOLUTION OF RICE FIELD AREA CHANGES IN KESIMAN VILLAGE, BALI-INDONESIA Putu Aryastana; Anak Agung Sagung Putri Gita Suari Samitra; Putu Ika Wahyuni; Krisna Himawan Subiyanto; Jason Pajimola Punay
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.21455

Abstract

Aim: This research focuses on understanding the extent of rice field loss and the corresponding increase in non-agricultural land to promote sustainable land management and planning. It examines the significant land-use changes in the Jepun Pipil Region, Kesiman Village, Bali, from 2013 to 2024, with a focus on rice fields and non-rice fields. Methodology and results: The study utilizes remote sensing technology and Landsat satellite imagery, applying four vegetation indices (NDVI, EVI, SAVI, and LAI) to analyze temporal changes in land cover. Among these, NDVI proved to be the most effective index for monitoring the transformations. The analysis shows a notable reduction in rice fields, particularly between 2023 and 2024, with a 43.48% decrease due to urban expansion and infrastructure development. Conversely, non-rice fields expanded by 130.43% during the same period, driven by the increasing demand for residential and commercial areas. Conclusion, significance, and impact study: The study highlights the importance of sustainable land-use planning and urges policymakers to strike a balance between development and the conservation of agricultural lands. The findings provide critical insights for local governments and stakeholders in land management and urban planning, contributing to wider efforts in monitoring agricultural land use and shaping effective policy strategies.
Analisis statistik kinerja dan koreksi kesalahan data curah hujan berbasis satelit di Provinsi Bali Aryastana, Putu; Yujana, Cokorda Agung; Candrayana, Kadek Windy; Subiyanto, Krisna Himawan
Majalah Geografi Indonesia Vol 39, No 1 (2025): Majalah Geografi Indonesia
Publisher : Fakultas Geografi, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/mgi.99971

Abstract

Abstrak.Data curah hujan yang akurat, reliabel, dan mendekati waktu nyata adalah faktor penting dalam analisis peramalan dan mitigasi bencara alam hidro klimatologi (banjir, tanah longsor, topan, dan curah hujan ekstrim), pemodelan hidrologi, prakiraan cuaca, perencanaan pertanian, manajemen ekologi, dan manajemen sumber daya air. Observasi curah hujan stasiun menghadapi kendala di Provinsi Bali, terutama pengukuran jarang ditemui di daerah terpencil dan pegunungan. Oleh karena itu, perlu mencari sumber data hujan yang dapat diandalkan seperti produk hujan berbasis satelit, yang menyediakan data dalam waktu mendekati waktu nyata (near real-time), deretan waktu hujan yang tidak terputus dengan resolusi spasial tinggi. Penelitian ini mengevaluasi kinerja produk hujan satelit global yang mendekati waktu nyata dengan 43 stasiun di Provinsi Bali. Produk curah hujan satelit yang dianalisis adalah Integrated Multi-satellitE Retrievals for Global Precipitation Measurement-Early Run (IMERG-ER) dan The Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks - Dynamic Infrared Rain Rate near real-time (PDIR-Now). Selanjutnya, kedua data curah hujan berbasis satelit tersebut dikoreksi menggunakan tiga pendekatan, yaitu koreksi rasio bias, koreksi rata-rata deviasi, dan koreksi nilai fungsi distribusi probabilitas. Metode tradisional berbasis titik ke piksel bersama dengan pengukuran statistik kontinu, metrik kategoris, serta indeks volumetrik diimplementasikan untuk mengevaluasi kinerja produk satelit. Studi ini menunjukkan bahwa meskipun kedua dataset memiliki kelebihan masing-masing, IMERG-ER cenderung lebih konsisten dan andal dalam berbagai kondisi dibandingkan PDIR-Now, terutama setelah koreksi dilakukan. Koreksi nilai fungsi distribusi probabilitas menunjukkan peningkatan kinerja paling signifikan dibandingkan dengan metode koreksi yang lainnya. Hasil studi ini juga mempertegas bahwa koreksi kesalahan perlu dilakukan sebelum data curah hujan berbasis satelit diaplikasikan dan berbagai bidang.Abstract. Accurate, reliable, and near-real-time rainfall data are critical factors for forecasting and mitigating hydro-meteorological natural disasters (such as floods, landslides, typhoons, and extreme rainfall), hydrological modeling, weather forecasting, agricultural planning, ecological management, and water resource management. Rainfall observations from station measurements face challenges in Bali Province, particularly due to the scarcity of measurements in remote and mountainous areas. Therefore, it is necessary to seek reliable sources of rainfall data, such as satellite-based rainfall products, which provide near real-time data, uninterrupted rainfall time series, and high spatial resolution. This research evaluates the performance of global near real-time satellite rainfall products with data from 43 stations across Bali Province. The satellite rainfall products analyzed include the Integrated Multi-satellite Retrievals for Global Precipitation Measurement-Early Run (IMERG-ER) and the Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks - Dynamic Infrared Rain Rate near real-time (PDIR-Now). Subsequently, the satellite-based rainfall data were corrected using three approaches: bias ratio correction, mean deviation correction, and probability distribution function value correction. Traditional point-to-pixel methods, along with continuous statistical measurements, categorical metrics, and volumetric indices, were implemented to evaluate the performance of satellite products. The study reveals that although both datasets have their respective strengths, IMERG tends to be more consistent and reliable under various conditions compared to PERSIANN, especially after corrections are applied. The probability distribution function value correction demonstrated the most significant performance improvement compared to the other correction methods. The findings of this study also emphasize the necessity of error correction before satellite-based rainfall data is applied across various fields. Submitted: 2024-09-14 Revisions:  2025-03-06 Accepted: 2024-09-11 Published: 2025-03-14
Building Structure Performance Analysis With and Without Shear Walls: Using Pushover Analysis Nugraha, Cokorda Gede Eka; Sinarta, I Nengah; Aryastana, Putu
Civil and Environmental Science Journal (CIVENSE) Vol. 8 No. 1 (2025)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2024.008.01.2

Abstract

The performance-based concept for earthquake-resistant buildings must be considered in the structural design of buildings. This concept analyzes the structural components to observe how the structure behaves during an earthquake, ensuring the building can withstand it safely. This study used pushover analysis to compare the performance of buildings with and without shear walls. The building's structure was constructed using three different types of modeling. The results showed that type 1 buildings have greater displacement and story drift values than type 2 and type 3. This finding suggests that type 2 and type 3 buildings had better structural rigidity than type 1. The plastic hinge mechanism in type 1 buildings refers to the SCWB design concept, where the plastic hinge mechanism occurs on the beam, whereas in type 2 and type 3 buildings, the plastic hinge machinery occurs in the shear wall area. Performance levels in types 1, 2, and 3, which use the FEMA 356 method, are at the immediate occupancy performance level.
Perbandingan Perilaku Akibat Pembebanan Pada Konstruksi Sistem Rangka dan Konstruksi Sistem Ganda Dharma, I Made Sotya Wira; Sinarta, I Nengah; Aryastana, Putu
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 13 No 1 (2025): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v13i1.3571

Abstract

As the height of a building structure increases, the building becomes more vulnerable to responding to lateral loads, which is why a dual-system approach is used to resist the lateral forces that occur in the structure. The use of moment-resisting frame systems (MRF) and dual systems differs particularly in terms of earthquake loads. Based on these conditions, an analysis was performed to compare the effects of loading on a frame system versus a dual system in the structural design of the RSU BaliMed Negara building. In the modeling process, two models were created: Structure 1 represents the existing condition, and Structure 2 incorporates the addition of shear walls. The analysis results show that the 100% mass participation value for Structure 1 is achieved at mode 34, whereas for Structure 2, it decreases to mode 15. The natural period of vibration is also influenced by the structural loading, with the addition of shear walls resulting in a shorter natural vibration period for Structure 2 compared to Structure 1. The base shear forces for Structure 1 are Vd in the X and Y directions at 4,856.70 and 4,856.41, respectively, and Vs in the X and Y directions at 4,635.12. For Structure 2, the values are Vd in the X and Y directions at 4,745.47 and 5,745.43, and Vs in the X and Y directions at 5,508.07. The displacement values for Structures 1 and 2 indicate that the displacement in Structure 2 is smaller.
Evaluasi Kinerja Bangunan Pengaman Pantai di Pantai Batu Mejan, Canggu Ardhanaresvari, Tiara Rekha; Aryastana, Putu; Suranata, Putu Gede
Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Vol. 18/No. 1/Juli 2025
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/dts.v18i1.6030

Abstract

Pantai Batu Mejan merupakan salah satu Kawasan pariwisata yang terletak desa Canggu, Kabupaten Badung. Pantai Batu mejan memiliki panjang pantai yakni ±561 m dengan bangunan pengaman pantai (sea wall) sepanjang ±270 m yang terletak di area samping Pura Batu Mejan, Canggu. Gelombang laut yang cukup besar di Pantai Canggu khususnya pada Pantai Batu Mejan menyebabkan kerusakan bangunan yang terjadi pada bangunan pengaman pantai (sea wall). Penelitian ini dilakukan untuk mengetahui kinerja bangunan pengaman pantai (sea wall) eksisting dengan menggunakan metode analisis penilaian kerusakan, analisis penilaian kondisi fisik dan kinerja fungsi bangunan pengaman pantai. Berdasarkan hasil evaluasi pada sepanjang Pantai Batu Mejan – Pantai Batu Bolong dengan total panjang pantai yakni ±1,26 km diperoleh pada segmen 1 dan 2 berdasarkan kerusakan erosi/abrasi yaitu sebesar 350 dengan prioritas penanganan A (amat sangat diutamakan). Selanjutnya pada evaluasi kondisi fisik dan kinerja fungsi bangunan pengaman pantai pada segmen 4 memperoleh hasil kinerja fungsi bangunan buruk karena terjadi kerutuhan sebagian pada bangunan sehingga perlu dilakukan kaji ulang. Sedangkan pada segmen 5 dan 6 memperoleh hasil kinerja fungsi bangunan baik sehingga hanya perlu dilakukan pemantauan. Kemudian dari evaluasi kondisi eksisting tersebut akan disimulasikan menggunakan software Surface -Water Modeling System (SMS) 10.1 dan 13.3.
PENGABDIAN KEPADA MASYARAKAT “TERASDigital Peguyangan Kaja” (Transformasi Era Layanan Administrasi Menuju Sistem Digital Desa Peguyangan Kaja Melalui Tanda Tangan Elektronik) Dana, Gde Wikan Pradnya; Yuniari, Ni Putu Widya; Aryastana, Putu; Kumara, I Made Surya; Bhaskara, Made Adi; Darma, I Gede Wira; Raharja, I Kadek Agus Wahyu
Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) Vol 9, No 3 (2025): Jurnal Pelayanan dan Pengabdian Masyarakat (PAMAS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM Universitas Respati Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/pamas.v9i3.5189

Abstract

Information technology within organizations, companies, and government institutions today plays a very significant role. However, the implementation of information technology in Indonesia still faces challenges in terms of efficiency and effectiveness, particularly in the village governance sector. On July 9, 2024, the Computer Engineering Faculty at Warmadewa University conducted a Community Service Program titled "TERAS Digital Peguyangan Kaja," which involved outreach and training to maximize the use of electronic signatures, evaluated using SWOT analysis. This program offers benefits such as the effectiveness and efficiency of public services. The implementation of electronic signatures is hindered by infrastructure issues and social resistance, necessitating outreach, intensive training, and infrastructure improvements. This community service program, in collaboration with the Denpasar City Communication and Information Agency (Diskominfo). This activity involved 25 participants consisting of village officials and service implementers, as well as representatives from the Denpasar City Communication and Information Office (Diskominfo). The evaluation of activities was carried out using SWOT analysis, involving socialization, training, and mentoring to implement the use of electronic signatures. evaluation using SWOT analysis. The implementation of socialization and training has increased the digital literacy of the community and village officials, increasing efficiency and effectiveness in solving the problems of the people of Peguyangan Kaja Village when the party whose signature is required by the village apparatus is in the way. . Although electronic signature technology has just begun to be implemented, there are technical obstacles and infrastructure limitations in Peguyangan Kaja Village that need to be overcome to ensure that this technology functions optimally and is accepted by the community. Future plans focus on improving the overall implementation of electronic signatures and increasing socialization to ensure the sustainability and effectiveness of the program. Keywords: Electronic Signatures, Socialization, Training, SWOT Analysis\
Technological and Environmental Evaluation of Incinerator Systems for Sustainable Waste-to-Energy Solutions in Denpasar City Aryastana, Putu; Kurniawan, I Putu Manik; Eryani, I Gusti Agung Putu; Dana, Gde Wikan Pradnya; Wui, Jackson Chang Hian
Indonesian Journal of Social and Environmental Issues (IJSEI) Vol. 6 No. 2 (2025): August
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijsei.v6i2.1696

Abstract

The rapid urbanization and tourism growth in Denpasar City, Bali, have led to increasing waste management challenges. Currently, only 22% of the daily 850 tons of waste is managed at the source, with the rest transported to landfills. This study aims to evaluate the implementation of Waste-to-Energy (WES) incineration systems as a potential solution to both waste disposal and energy production. The research uses a quantitative method involving primary data collection through interviews and secondary data from existing documentation. Three incinerator designs were analyzed based on parameters like energy efficiency, emissions, and environmental impact. The results show that the third incinerator system delivers the highest power output at 445.67 KW, although it also produces moderate pollutant emissions. The second design system, however, strikes a better balance, offering both lower emissions and effective power generation, making it the most environmentally favorable option. The study contributes to the growing body of research on WES technology, highlighting the need for advanced design optimization to minimize environmental impacts while maximizing energy output.
An Assessment of Sea Wall Capabilities at Penimbangan Beach in Buleleng Regency Yanti Dewi, Ni Komang; Aryastana, Putu; Gede Suranata, Putu; Windy Candrayana, Kadek
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.4

Abstract

Penimbangan Beach, located in Bakti Seraga Village, Buleleng, has functioned as an area for fishermen to catch fish but has now been changed to become a tourism destination. The coastline of Penimbangan Beach is 803 meters, according to direct measurements with coastal protection sea wall along the shoreline in the field. With the change in function, many traders’ kiosks are now selling on the sea wall, and coastal protection has caused damage. Besides that, wave overtopping often occurs during high tides, causing objects that should be protected by the sea wall to be exposed to wave overtopping. Based on the issues mentioned above, a coastal damage assessment is required, divided into 16 segments, each segment being 50 meters. The results of the coastal damage assessment yielded the scales of Priority C (preferred), Priority D (less prioritized), and Priority E (not prioritized). The result of evaluating the physical condition of all of the sea walls received fairly good results. The performance function of the coastal protection at Penimbangan Beach shows that segments 1-5 have good functional performance, requiring only monitoring of the sea wall. However, segments 6-16 have poor functional performance due to wave overtopping, necessitating a reassessment of the sea wall.
Analisis Komparatif Zona Agregat Halus Terhadap Kuat Tekan, Kuat Tarik Belah, dan Kuat Lentur Beton Ni Wayan Pani Nadia Sari; Ni Komang Ayu Agustini; Aryastana, Putu
Inersia: Jurnal Teknik Sipil Vol. 17 No. 2 (2025)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.17.2.44-51

Abstract

The performance and durability of concrete depend significantly on the quality of its components, particularly fine aggregates such as sand. These aggregates are categorized into four distinct gradation zones according to their particle size distribution. This study aims to analyze how different fine aggregate gradation zones affect the mechanical properties of standard concrete designed for a target compressive strength of 25 MPa. The experimental approach involved assessing material characteristics, designing concrete mixtures following SNI 03-2834-2000 guidelines, and conducting compressive, split tensile, and flexural strength tests after 7 days of curing. Results indicated that zone 2 fine aggregates yielded the maximum compressive strength (29.03 MPa) and split tensile strength (1.49 MPa), whereas zone 3 aggregates produced the highest flexural strength (2.71 MPa). These findings highlight the importance of selecting the optimal fine aggregate gradation zone to enhance concrete performance.
Perencanaan Struktur Gedung Kantor (DPMPTSP, Disnaker, Diskes dan Capil) Kabupaten Gianyar dengan Menggunakan Flat Slab Mulia, Hendy Ardhito; Triswandana, I Wayan Gde Erick; Aryastana, Putu; Sarassantika, I Putu Ellsa
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 2 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i2.17372

Abstract

In the construction, it must be able to be used according to its function so that it can be used for a long time. The concept of construction that has sufficient strength and allows for large spaces without affecting aesthetics has emerged in recent decades. A flat slab is one of the advances in the construction system of a two-way concrete plate that distributes the working load directly to the column element without using a beam. The use of drop panels can increase the strength of the plate by resisting the sliding style of the pons and reducing the negative moment reaction that occurs on the plate and column. In the analysis, the results used a flat slab with a thickness of 200 mm, with bones in the x and y directions at the focus of As D16-100 mm and As’ D16-200 mm, whereas in the columns of column directions x and y, the field part is mounted with As D13-100 mm and As‘ D13-200 mm. In the middle column of directions X and Y, use the bones of As D13-100 mm and As‘ D13200 mm. Used a drop panel of 300 mm. For the lift area, an L type column with dimensions of 450 mm x 450 mm is used. The bars used are TB1, TB2, B1, and RB, and the columns used are 500 mm x 500 mm and 400 mm x 400 mm. The planned foundation uses a cylinder-shaped pillar with a depth of up to 8 meters.
Co-Authors A. A. Ngr. Billy Narendra Ahadina, Anak Agung Ananda Surya Ayugde Anak Agung Gede Sumanjaya Anak Agung Sagung Putri Gita Suari Samitra Ardantha, I Made Ardhanaresvari, Tiara Rekha Asmani K., Anak Agung Rai Aureo Da Costa Belo Bhaskara, Made Adi Budha, I Ketut Candrayana, Kadek Windy Cok Agung Yujana Cok Agung Yujana Darma, I Gede Wira Dewa Ayu Nyoman Sriastuti, Dewa Ayu Nyoman Dewi, Listya Dharma, I Made Sotya Wira Diva, I Wayan Ditya Maha Gede Rustiawan Gede Sumarda Gede Suranata, Putu I Dewa Ayu Dwi Darmayanti I Dewa Ayu Mega Swari I Gede Yogi Adnyana Puspita Riana I Gusti Agung Putu Eryani I Gusti Ngurah Agung Widya I Ketut Budha I Komang Angga Darmayasa I Made Ardantha I Made Ardantha I Made Dwipa Jaya I Made Eryana Eka Putra I Made Kariyana I Made Okdivian Soekaratha I Made Surya Kumara I Made Wika Darmawan I Nengah Sinarta I Nyoman Sai Santya I Putu Ellsa Sarassantika I Putu Suta Suyasa I Wayan Muliawan I Wayan Runa I Wayan Wartana Ida Ayu, Trisuci Arnawati Ida Bagus Gede Indramanik Ida Bagus Made Yatana Ilona Dwiyeni Nahak Jason Pajimola Punay Kadek Surya Dwangga Kadek Windy Candrayana Krisna Dwipa Yana Krisna Himawan Subiyanto Kurniawan, I Putu Manik M. Sudiana Mahendra Maria Imaculata Goran Mosa Marselus Putra Mawo Kasa Sairo Morim, Gruberth Dirk Mulia, Hendy Ardhito Ni Kadek Ari Gita Cahyani Ni Ketut, Natalia Wulansari Ni Komang Ayu Agustini Ni Komang Ayu Agustini Ni Komang Ayu Agustini Ni Komang Sintyawati Ni Luh Putu, Laksmini Ni Made Ola Ulandari Ni Made Widya Pratiwi Ni Made Widya Pratiwi Ni Putu Widya Yuniari Ni Wayan Pani Nadia Sari Ni Wayan Wahyuni Nugraha, Cokorda Gede Eka PUTU IKA WAHYUNI Rahadiani, Anak Agung Sagung Dewi Raharja, I Kadek Agus Wahyu Rahmayanti, Ni Made Prisca Sinda, Longginus Subiyanto, Krisna Himawan Sumanjaya, Anak Agung Gede Suranata, I Putu Gede Tasuku Tanaka Tri Hayatining Pamungkas Triswandana, I Wayan Gde Erick Wayan Gde Erick Triswandana Wayan Wahyu Adnyana Tamara Wayan Widiana Wikan Pradnya Dana, Gde Windy Candrayana, Kadek Wui, Jackson Chang Hian Yanti Dewi, Ni Komang Yasa Bagiarta, I Ketut Yujana, Cokorda Agung