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Change Detection of Topographic Features using Iteratively Reweighted Multivariate Alteration Detection and Random Forest Classification for Partial Updating of Indonesian Topographic Map Purwati, Endang; Harintaka, Harintaka
Geoid Vol. 20 No. 2 (2025)
Publisher : Departemen Teknik Geomatika ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/geoid.v20i2.6364

Abstract

The current demand for geospatial information is increasingly urgent across various sectors, making the provision of base maps a top priority that is currently being accelerated. However, a major challenges faced today is the outdated nature of the Indonesian Topographic Map (Peta Rupabumi Indonesia/RBI), many of which were produced several years ago and are now considered obsolete. Updating the data is essential to ensure the validity of geospatial information in accordance with current conditions. At present, the detection of change in topographic feature is still largely conducted manually, thereby necessitating the exploration of methods to accelerate partial map updating processes. This study implements a change detection approach using Iteratively Reweighted Multivariate Alteration Detection (iMAD) method, in combination with Random Forest (RF) and Rule-based Classification. The iMAD technique is relatively insensitive to radiometric differences between acquisition times and simultaneously considers all spectral bands. Its iterative process improves accuracy, making it suitable for change detection in partial mas updates. Random Forest Classification supports the interpretation of iMAD results by providing information on changes in land cover types. The iMAD results indicate that the majority of detected changes fall under the ambiguous category (49,18%), followed by unchanged pixels (24,78%), significant changes (20,91%), and agricultural changes (5,13%). Overall accuracy of Random Forest Classification reached 90,45 % in 2019 and 93,20 % in 2023. The Kappa coefficient was 0,8920 and 0,8936 for 2019 and 2023, respectively. The final change detection results, after applying rule-based classification show that 19,70% of the study area experienced change, while 80,30% remained unchanged. Therefore, this approach presents an effective and efficient alternative for conducting partial updates of the Indonesian Topographic Map (RBI).
Swiftlet Bird's Nest (Collocalia fuciphaga) from West Sumatra as a Functional Food and Its Nutritional Content Putra, Aditya Willy; Purwati, Endang; Marlina
Andalasian Livestock Vol. 1 No. 1 (2024): ALive
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/alive.v1.n1.p9-17.2024

Abstract

Functional foods contain biologically active components and compounds that have physiological effects on the human body, such as promoting health and decreasing the risk of sickness. The swiftlet, which belongs to the Collocalini family, is an insect-eating bird that migrates across the Indian Ocean, Southeast Asia, and northern Australia to the Pacific Ocean. Swiftlet bird's nests (SBN) contain protein, fats, carbohydrates, iron, calcium, phosphorus, inorganic salts, fiber, and water. The objective of this study is to determine the nutritional content of swiftlet bird nests in different regions of West Sumatra. Samples of swiftlet bird's nests (SBN) were collected from Padang City (PD), Bukittinggi City (BK), and Pesisir Selatan Regency (PS). Nutritional content was analyzed using proximate methods, including moisture, protein, and fat, and the nitrite concentration was measured using UV-Vis spectrophotometry. The study found that SBN in West Sumatra contains 47.65–50.55% protein, 1.48–2.47% fat, 21.77–22.77% water, and 24.75–32.72 ppm nitrite. The results indicate that the nutritional content varies among the samples, and the protein content found in SBN is higher, making it suitable for use as a functional food. Additionally, SBN has many health benefits and biological activities, such as mitogenic response and cell growth, enhanced immunity, and improved bone strength.
TINGKAT PAPARAN KEBISINGAN AKTIVITAS PENERBANGAN PESAWAT UDARA PADA KAWASAN PEMUKIMAN PENDUDUK KELURAHAN TAFURE DAN TARAU KECAMATAN TERNATE UTARA Rachman, Nurdiani; Robo, Tamrin; Adjam, Syarifuddin; Purwati, Endang
Jurnal GeoCivic Vol 6, No 1 (2023): Edisi April
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/geocivic.v6i1.6193

Abstract

The settlements in the Tafure sub-district and the Tarau sub-district are residential areas that are right around Sultan Babullah Airport with a residential distance from the airport of only about 1 (one) meter, this makes the people living in these areas always exposed to noise. This study aims to determine the noise level of aircraft activities in residential areas of Tafure and Tarau sub-districts, and to determine the role of environmental factors in the distribution of noise. The method used is descriptive quantitative where the data obtained is analyzed to determine the equivalent value of noise using the Leq (Equivalent Continous Noise Level) formula to see a comparison of noise levels from aircraft flight activities and make a percentage diagram. The results showed that the noise level in the Tafure sub-district during landing was 63.7 dB-75.3 dB and during take-off was 62.7 dB-74.1 dB. Whereas in the kelurahan, the noise level when the plane is landing is 63.8 dB-72.9 dB and during take-off is 65.9 dB-71.1 dB. The noise level in the two kelurahans has exceeded the noise threshold value set by KMLH No.48 of 2002, namely 55 dB for residential and residential areas. Factors that affect the noise level in the Tafure and Tarau sub-districts are caused by very minimal vegetation because the residential areas are already very dense and the wind speed in the two kelurahans is 0.98-1.31 m/s and for a temperature level of 71 .6% where the wind speed has no effect on the noise level.
Implementasi Active Learning dengan Metode Think Pair Share untuk Meningkatkan Hasil Belajar Siswa Kelas XI IPS 2 SMAN 5 Kota Ternate Gailea, Reka; Purwati, Endang; Aryuni, Vrita Tri
Pangea : Wahana Informasi Pengembangan Profesi dan Ilmu Geografi Vol 5, No 1 (2023): Pangea: Wahana Informasi Pengembangan Profesi dan Ilmu Geografi
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/pangea.v5i1.6759

Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar siswa kelas XI IPS 2 dengan menerapkan model active learning metode think pair share di SMA Negeri 5 Kota Ternate semester genap 2023-2024. Subyek penelitian berjumlah 20 orang siswa. Penelitian ini dilaksanakan berkolaborasi antara peneliti dengan guru kelas untuk melihat peningkatan hasil belajar siswa pada mata pelajaran Geografi. Metode penelitian yang digunakan adalah penelitian tindakan kelas (PTK) dengan teknik pengumpulan data menggunakan metode observasi untuk penilaian proses pembelajaran dan tes pada penilaian akhir pembelajaran. Teknik analisis data menggunakan persentase untuk menilai tingkat penerapan model pembelajaran dan hasil belajar siswa. Perolehan persentase peningkatan hasil belajar siswa dari penerapan model pembelajaran pada siklus I sebesar 65% dan siklus II sebesar 85%. Berdasarkan hasil penelitian dapat disimpulkan bahwa dengan implementasi model active learning metode think pair share dapat meningkatkan hasil belajar siswa kelas XI IPS 2. Rekomendasi dari hasil penelitian tindakan ini bahwa guru Geografi dapat menerapkan model Active Learning dengan metode Think Phair Share untuk membuat proses pembelajaran lebih dinamis, siswa lebih partisipatif dan menyenangkan.
Upaya Bertahan Hidup Nelayan Tangkap di Kelurahan Lelewi Kecamatan Pulau Batang Dua Kota Ternate Baruka, Marselina; Amelia, Risky Nuri; Safitri, Yuni Andriyani; Purwati, Endang; Sufia, Rohana
Pangea : Wahana Informasi Pengembangan Profesi dan Ilmu Geografi Vol 5, No 2 (2023): Pangea: Wahana Informasi Pengembangan Profesi dan Ilmu Geografi
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/pangea.v5i2.7231

Abstract

Umumnya matapencaharian masyarakat di Kelurahan Lelewi Kecamatan Pulau Batang Dua bergantung pada sumberdaya alam, salah satunya adalah sebagai nelayan. Akan tetapi matapencaharian sebagai nelayan memiliki resiko yang cukup tinggi ditengah pergeseran musim dan anomaly iklim seperti sekarang ini. Alat tangkap yang digunakan nelayan setempat masih tradisional, sehingga hambatan melaut sulit diminimalisir. Alhasil ekonomi rumah tangga menjadi sangat tidak stabil sehingga penting untuk mengetahui upaya bertahan hidup para nelayan di lokasi tersebut. Jenis penelitian ini menggunakan penelitian deskriptif dengan pendekatan kualitatif. Teknik penelitian menggunakan wawancara dengan peryataan terbuka kepada 13 orang masyarakat nelayan aktif yang dipilih sesuai dengan kriteria yang diterapkan. Analisis data menggunakan empat tahap yaitu, pengumpulan data, reduksi data, display data, dan kesimpulan data. Berdasarkan hasil penelitian, ditemukan bahwa upaya bertahan hidup masyarakat nelayan tangkap di Kelurahan Lelewi dengan memanfaatkan sumberdaya pesisir berupa ikan,bekel dan udang laut. Kemudian memanfaatkan sumber daya manusia dalam rumah tangga nelayan yaitu dengan optimalisasi tenaga kerja rumah tangga, pola nafkah ganda tani-nelayan, pola nafkah ganda jasa pengangkutan. 
POLYCLONAL ANTIBODY UTILIZATION FOR DETECTION OF JEMBRANA ANTIGEN AT BALI CATTLE IN WEST SUMATRA PROVINCE Helmi, Helmi; Purwati, Endang; Rahmadani, Ibnu; Subekti, Didik Tulus
Jurnal Kedokteran Hewan Vol 14, No 1 (2020): March
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v14i1.15014

Abstract

The aims of this study were to detect Jembrana antigen with polyclonal antibody and to describe antigen distribution in the Bali cattle organ that positively infected with Jembrana disease. Spleens, lungs, and livers were harvested from 10 naturally infected Bali cattle whose infection was confirmed through positive Polymerase Chain Reaction (PCR) result for Jembrana virus. Immunohistochemistry test was performed using polyclonal antibodies produced in rabbits. The results showed that cells infected by Jembrana viruses displayed positive reaction with a reddish brown color. Immunohistochemistry methods using polyclonal antibodies can detect Jembrana antigens in the spleen, liver, and lung with the highest average detection score (P0.05) was found in spleen, followed by liver and lungs. There was significant difference in the distribution of Jembrana antigens between the spleen, liver, and lungs with spleen having the highest antigen density.
ANALISIS DESKRIPTIF KARAKTERISTIK GURU SMK KOTA TERNATE BERBASIS TEORI GLICKMAN SEBAGAI DASAR PENGEMBANGAN SUPERVISI KOLABORATIF Purwati, Endang; Maisyaroh, Maisyaroh; Sobri, Ahmad Yusuf; Juharyanto, Juharyanto; Sinon, Iriwi Louisa S.
Jurnal Suluh Pendidikan Vol 14 No 1 (2026): Maret 2026
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/jsp.v14i1.2479

Abstract

This study aims to describe the characteristics of vocational high school (SMK) teachers in Ternate City based on their level of commitment and level of abstraction, to determine appropriate supervisory approaches. Although instructional supervision has been widely examined, studies that map teacher characteristics as a basis for determining supervisory approaches—particularly in the context of vocational education in eastern Indonesia, such as Ternate—remain limited. This research employs a descriptive quantitative approach with a sample of 93 vocational high school teachers selected through random sampling. The instrument was adapted from Glickman’s (1981) theoretical framework and has undergone construct validity and reliability testing (Cronbach’s Alpha α = 0.83 and α = 0.80). Data were analyzed using descriptive statistics. The findings identify four categories of teacher characteristics: teacher dropouts (24%), unfocused workers (28%), analytical observers (21%), and professional teachers (27%). These results indicate that more than half of the teachers have not yet reached the professional category, thus requiring supportive and participatory supervisory approaches. Accordingly, a collaborative supervision approach based on Glickman’s syntax—comprising pre-conference, observation, analysis, post-conference, and post-critique—is recommended as a relevant supervisory strategy. Practically, these findings may serve as a reference for supervisors and school principals in designing differentiated supervision programs aligned with teacher profiles. Theoretically, this study contributes to the literature on mapping teacher characteristics within the context of vocational education in Indonesia.
Relationship between Proximate Characteristics and pH Value with Total Lactic Acid Bacteria in Etawa Goat Milk Annisa Farma; Djong Hon Tjong; Endang Purwati; Anthoni Agustien; Annisa Khaira
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.12044

Abstract

Etawa goat milk is a highly nutritious food source with strong potential to be developed as a functional food. Its nutritional components—such as protein, fat, and water content—along with the presence of lactic acid bacteria (LAB), contribute to its health benefits. This study aimed to analyze the proximate characteristics and pH value of Etawa goat milk and to evaluate their relationship with the total LAB count. Milk samples were collected from three locations in Padang City: Gunung Pangilun, Korong Gadang, and Padayo. Proximate analysis was conducted using standard methods from the Indonesian National Standardization Agency, while total LAB was determined using the Total Plate Count method on MRS Agar media. The results showed that moisture content ranged from 86.11–88.93%, protein content from 3.64–4.17%, fat content from 4.00–5.00%, and pH values from 6.70–7.00. The total LAB ranged from 30.66×10⁸ to 48.33×10⁸ CFU/mL, exceeding the minimum threshold required for probiotic sources. Samples with higher protein and fat content tended to have higher LAB counts. In addition, high moisture content and near-neutral pH supported microbial growth. Therefore, the proximate characteristics and pH value of Etawa goat milk are associated with LAB counts, indicating its potential as a natural probiotic source. The findings of this study provide scientific evidence for the utilization of Etawa goat milk as a natural probiotic product and may contribute to the development of dairy-based functional foods and community nutrition programs.
Co-Authors -, Risfaheri -, Urnemi Adisti Rastosari Adjam, Syarifuddin Agung Rahmadi Ahmad Sobari Amelia, Risky Nuri Anak Agung Istri Sri Wiadnyani Andi Tenri Pada Agustang Andono, Rizky Harsya Anna Farhana Anna Farhana Annisa Farma Annisa Khaira Anthoni Agustien Aryuni, Vrita Tri Aslinar Aslinar Asnita Ode Samili, Asnita Ode Baruka, Marselina Dahlyanti, Rina Dermawan , Very Dian Chandrasasi Didik Tulus Subekti Didik Tulus Subekti Djong Hon Tjong Donny Harisuseno Dwi Nugroho Eka Wulandari Srihadi Putri, Eka Wulandari Srihadi El Latifa Sri Suharto Ferawati, . Firda Arlina Gailea, Reka Gustina Lubis Harintaka Harintaka Hasim, Jainudin Helmi Arifin Helmi Helmi Helmi Helmi Hendri Purwanto Hernita Pasongli Hidayat, Zoni Husmaini Husmaini Ibnu Rahmadani Iskandar Zulkarnain James Hellyward Jamhari Jamhari Jamsari Jamsari Jaswandi . Juharyanto Juharyanto Lily Montarcih Limantara Lutfi, Nurhalisa J Maisyaroh Mangku Mundana Marlina Melia, Sri Moh. Sholichin Muhammad Ilham Murni, Yulia Nimas Ayu Anggraini, Nimas Ayu Putra, Aditya Willy Putra, Dino Eka Rachman, Nurdiani Rahmadani, Ibnu Rasyid, Rusman Rini Wahyu Sayekti ROHANA SUFIA Rumiyati, Rumiyati Sanusi Ibrahim Sayful, Fery Lismanto Sinon, Iriwi Louisa S. Siti Maimunah Sri Rahayu Ningsih Sumanti, Titi Sumaryati Syukur Sumedi Sumedi Syahrilfuddin Syahrilfuddin, Syahrilfuddin Syaiful, Amrie Tamrin Robo Tinda Afriani Urnemi - Ussy Andawayanti Vebriyanti, Ely Very Dermawan Widandi Soetopo Yamin, Fahrun Yorva Sayoeti Yuliawati Yuni Andriyani Safitri Yurnalis Yurnalis Yusri Dianne Jurnalis Yusuf Sobri, Ahmad Zariul Antosa Zona Octarya Zona Octarya Zulkifli Ahmad