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All Journal Jurnal Bahan Alam Terbarukan METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Ilmu Pendidikan Indonesia Jurnal Pengabdian Papua Jurnal Portal Sipil Jurnal Median Arsitektur dan Planologi Jurnal Inovasi Global
JOHNSON SIALLAGAN
Universitas Cenderawasih
Religion Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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STRATEGI PENGURANGAN RISIKO BANJIR DI DISTRIK ABEPURA, KOTA JAYAPURA Syawal, Muhammad; Manalu, Janviter; Siallagan, Johnson
Jurnal MEDIAN Arsitektur dan Planologi Vol 13 No 02 (2023): Jurnal Median
Publisher : Universitas Sains dan Teknologi Jayapura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58839/jmap.v13i02.1250

Abstract

Kota Jayapura sering mengalami banjir yang memiliki dampak signifikan, seperti yang terjadi pada tanggal 06 Januari 2022. Penyebab banjir tersebut antara lain adalah cuaca ekstrem dan topografi daerah yang rentan. Penelitian ini bertujuan untuk mengidentifikasi strategi pengurangan risiko banjir dengan mengkaji persepsi masyarakat terhadap bencana banjir dan upaya mitigasi yang ada, dengan menggunakan metode skala Likert, serta menentukan strategi pengurangan risiko banjir dengan menggunakan metode Analytic Hierarchy Process (AHP). Hasil analisis menunjukkan bahwa masyarakat memiliki pemahaman yang baik tentang kejadian bencana banjir dan pentingnya tindakan mitigasi. Namun upaya prabencana masih perlu ditingkatkan agar masyarakat selalu siap siaga. Hasil penelitian lain dengan metode AHP menyatakan bahwa Badan Penanggulangan Bencana Daerah (BPBD) memiliki peran kunci dalam strategi pengurangan risiko banjir, terutama dalam aspek ekonomi. Salah satu alternatif strategi yang diperoleh adalah penguatan atau pembaruan peraturan sebagai langkah pengurangan risiko banjir. Dengan upaya yang terpadu, diharapkan risiko banjir dapat dikelola secara efektif dan berkelanjutan, sehingga mengurangi dampak negatif bagi masyarakat dan lingkungan Kota Jayapura.
STATUS MUTU AIR DANAU SENTANI BERDASARKAN INDEKS KUALITAS DAN UPAYA PENGELOLAANNYA Riando, Kopanye; Siallagan, Johnson; Manalu, Janviter; Walukow, Auldry F.; Warpur, Maklon; Himawan, Himawan
Jurnal MEDIAN Arsitektur dan Planologi Vol 14 No 02 (2024): Jurnal Median
Publisher : Universitas Sains dan Teknologi Jayapura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58839/jmap.v14i02.1430

Abstract

Penelitian ini bertujuan (1). Menganalisis kondisi eksisting kualitas air Danau Sentani berdasarkan parameter: suhu, TSS, pH, BOD, COD, DO, total nitrogen, total fosfat, Fecal coliform, Total coliform (2). Menganalisis status mutu berdasarkan IP. (3). Menganalisis upaya-upaya pengelolaan Danau Sentani berdasarkan pendekataan sistem. Hasil penelitian (1) analisis terhadap parameter fisika dalam kategori deviasi 3, parameter TSS sampel di atas baku mutu, parameter pH sampel penelitian memenuhi, parameter BOD dan COD sampel penelitian di atas nilai baku mutu, parameter DO sampel penelitian memenuhi nilai baku mutu kecuali Dermaga Yahim, parameter total nitrogen sampel memenuhi nilai baku mutu, parameter fosfat sampel melampaui baku mutu air kelas I, untuk parameter biologi (fecal coliform) ke 9 titik sampel penelitian masih memenuhi nilai baku mutu air kelas I, kecuali muara sungai Kamp Wolker (115 MPN/100 mL) di atas baku mutu air dan parameter terakhir yaitu total coliform ke 9 titik sampel penelitian masih memenuhi nilai baku mutu kecuali Dermaga Yahim (1.089 MPN/100 mL) di atas baku mutu; (2) hasil analisis terhadap mutu air Danau Sentani dengan metode indeks kualitas air (IP) dengan kategori tercemar ringan meliputi Jayfury Kampung Puay, Yoka Kampung Yoka, muara sungai Kamp Wolker, muara sungai Kampung Harapan, dermaga Kalkote, dan tercemar sedang yaitu Dermaga Asei, muara sungai Jembatan Dua, muara sungai Yahim, dermaga Yabaso, dan dermaga Yahim. IP tertinggi ada pada muara sungai Yahim sebesar 5,225 dengan status tercemar sedang; (3) berdasarkan hasil analisis kualitas air Danau Sentani maka perlu dilakukan upaya-upaya pengelolaan seperti pengendalian atau pencegahan agar tidak terjadi pencemaran lingkungan.
STRATEGI PENGENDALIAN PENCEMARAN PAKAN DARI BUDIDAYA KERAMBA SECARA BERKELANJUTAN DI DANAU SENTANI DISTRIK SENTANI TIMUR KABUPATEN JAYAPURA Ayomi, Erna Ferderika; Manalu, Janviter; Walukouw, Auldry F; Warpur, Maklon F; Siallagan, Johnson
Jurnal PORTAL SIPIL Vol 13 No 2 (2024): PORTAL SIPIL
Publisher : Universitas Sains dan Teknologi Jayapura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58839/jps.v13i2.1426

Abstract

Banyaknya usaha budidaya ikan keramba jaring apung di Danau Sentani diperkirakan memberikan dampak negatif terhadap lingkungan akibat adanya peningkatan kandungan nutrisi di perairan yang berasal dari sisa pakan yang tidak dimakan, ekskresi ikan dan kotoran. Tujuan dari penelitian ini adalah untuk mengetahui status mutu air Danau Sentani di Distrik Sentani Timur di mana terdapat banyak keramba jaring apung dan menyusun strategi pengendalian pencemaran akibat adanya aktivitas keramba jaring apung tersebut. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dan kualitatif, serta merumuskan strategi pengendalian pencemaran sisa pakan di Danau Sentani dengan analisis SWOT. Status mutu air danau Sentani diukur mengacu pada ketentuan pada Peraturan Pemerintah Nomor 22 Tahun 2021 tentang Penyelenggaraan Perlindungan dan Pengelolaan Lingkungan Hidup. Pengambilan sampel air dilakukan pada lima lokasi di Distrik Sentani Timur, yaitu: Pantai Khalkote, Nendali, Puay (muara Jaifuri), Tanjung Elmo, dan Cafe Christo. Sedangkan untuk analisis strategi, pengumpulan data dilakukan lewat penyebaran kuesioner dan wawancara kepada beberapa narasumber. Hasil penelitian ini menunjukkan bahwa Danau Sentani, khususnya di wilayah Distrik Sentani Timur, berada pada kondisi tercemar ringan dengan angka Indeks Pencemaran berkisar antara 3,227 sampai dengan 3,252. Strategi pengendalian pencemaran pakan dari budidaya ikan di keramba jaring apung adalah dengan memanfaatkan kekuatan dan peluang yang ada, yaitu: membuat kebijakan pengendalian pencemaran air dengan mengacu pada PP No.22 Tahun 2021, pembinaan dan pendampingan kepada kelompok pembudidaya ikan keramba dalam pengendalian pencemaran air danau, kerjasama para pemangku kepentingan dalam pengendalian pencemaran air Danau Sentani.
DEVELOPMENT OF STEM-PjBL INTEGRATED PHYSICS MODULE (Science, Technology, Engineering, and Mathematics – Project Based Learning) IN DIRECT CURRENT ELECTRICITY MATERIALS TO IMPROVE LEARNING OUTCOMES Widiawati, Reni; Virman, Virman; Siallagan, Johnson
Jurnal Ilmu Pendidikan Indonesia Vol 10 No 1 (2022)
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v10i1.1932

Abstract

This research is a research and development (research & development) which aims to find out how to make an integrated physics module STEM-PjBL, how to develop an integrated physics module STEM-PjBL, the feasibility of an integrated physics module STEM-PjBL, and learning outcomes using the integrated physics module STEM-PjBL on direct current electrical materials and the advantages and disadvantages of the STEM-PjBL integrated physics module.The results of the study show that there is an increase in student learning outcomes after using the STEM-PjBL integrated physics module, based on the average n-Gain result of 0.66 in the medium category which means that the use of the STEM-PjBL integrated physics module is good in improving student learning outcomes
Analisis Multi-Kriteria dengan Pendekatan Analytical Hierarchy Process Untuk Strategi Mitigasi dan Adaptasi Bencana Banjir di Distrik Nabire Kabupaten Nabire Husain, Husain; Siallagan, Johnson; Manalu, Janviter; Walukow, Auldry F.; Rumahorbo, Basa T.
METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Vol. 9 No. 2 (2025): METHOMIKA: Jurnal Manajemen Informatika & Komputersisasi Akuntansi
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/jmika.Vol9No2.pp282-291

Abstract

Nabire Regency, Central Papua Province, has a high vulnerability to flooding due to significant rainfall intensity. Risk analysis was conducted using the Analytical Hierarchy Process (AHP) method to determine the priority of factors causing flooding, including hydrological aspects, land use, infrastructure, and socio-economic impacts in a systematic manner. The results of this study indicate that the analysis of public perception of flooding disasters was conducted by modeling data using a Likert scale, which was processed computationally to generate patterns of public perception. The Analytical Hierarchy Process (AHP) method was used to determine the priority of data-based mitigation strategies. The results confirm that BPBD plays a dominant role in flood risk management through the integration of adaptive and sustainable environmental information systems.
DEVELOPMENT OF IPAS PROJECT E-MODULES THROUGH A PROJECT-BASED LEARNING (PJBL) APPROACH TO IMPROVE SCIENTIFIC LITERACY, ON SUBSTANCE MATERIALS AND THEIR CHANGES Hutahaean, Rita Donna; Siregar, Tiurlina; Siallagan, Johnson; Ortis Fredy Waromi
Jurnal Ilmu Pendidikan Indonesia Vol 14 No 1 (2026): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v14i1.5275

Abstract

Development of the IPAS Project e-module through the Project Based Learning (PjBL) approach to improve scientific literacy in substance materials and their changes. The objectives of the research are (1) designing e-modules through the PjBL approach, (2) Feasibility analysis of e-modules, (3) Evaluation of improving scientific literacy. The research method used is Research and Development (R&D) with a 4D (Define, Design, Develop, Disseminate) development model. The research was conducted at the Papua Special Tourism State School with a total of 30 students. The results of the study show that: (1) E-modules through the PjBL approach are made through the first stage is definition, the second is data collection, the third is making a module design, the fourth is validating the model design, the fifth is revising the module design, the sixth is a small-scale trial, then a large-scale trial to obtain scientific literacy data in learning, as well as the response of IPAS Project teachers to the module. (2) The feasibility analysis of the e-module was obtained through validation of validators (92.36% of the category strongly agreed), peer feasibility test (94.65% of the category strongly agreed) so that it was declared very feasible to use (3) The evaluation of scientific literacy improvement was obtained that the increase in scientific literacy increased in RPP 1 by 15.53%, in RPP 2 by 45.13%, in RPP 3 by 52.24% with an average value increase in the three meetings of 35.86% after using the module The IPAS project in learning so that significantly the application of e-modules through PjBL is effectively used as a contextual learning medium at the vocational school level.
Penyuluhan Pembuatan Parfum dari Minyak Atsiri Daun Kayu Manis di SMAIT Insan Cendekia Jayapura Johnson Siallagan; Lodwyk N. Krimadi; Diana M. Abulais; Martha K. Sefa; Demas R. Yaam
JURNAL PENGABDIAN PAPUA Vol 9 No 2 (2025)
Publisher : LPPM Uncen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jpp.v9i2.4805

Abstract

Cinnamomum burmannii is a leading Indonesian commodity in global trade. The part of the cinnamon plant that has not been fully utilized is the leaves. Cinnamon leaves can be used as a prospective product, namely essential oils that can be used as base notes in making perfume. Essential oil processing can be done simply by the steam distillation method. However, many people still do not know how to process essential oils properly. This Community Service (PKM) activity is a form of knowledge transfer by the implementing team from the Chemistry Department of Cenderawasih University to students of SMAIT Insan Cendikia Jayapura regarding the manufacture of perfume from essential oils made from cinnamon leaves. The activity was carried out on June 4, 2025. The methods used in this service included an initial survey, implementation of activities including counseling and demonstrations, and activity evaluation. During this activity, a simple distillation unit was also handed over to the school, as a provision for students to practice the material that had been given in the hope of improving students' skills in processing essential oils. The results achieved in this activity showed that students were very enthusiastic, active, and interactive in absorbing knowledge. Based on the evaluation results (initial test and final test) showed a significant increase to 93% after participating in this activity. 
Keanekaragaman Jenis Vegetasi Pohon, Estimasi Biomassa dan Serapan Karbon Hutan Lahan Kering di Kampung Selil Distrik Ulilin Kabupaten Merauke Provinsi Papua Selatan Hutapea, Musa B.; Siallagan, Johnson; Rumahorbo, Basa T.; Manalu, Janviter; A. Asmuruf, Frans
Jurnal Inovasi Global Vol. 4 No. 4 (2026): Jurnal Inovasi Global
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jig.v4i4.528

Abstract

This study aims to analyze the species diversity of tree vegetation and to estimate aboveground tree biomass, calculate carbon stock and carbon sequestration, and assess the contribution of tree diameter classes within a cluster plot in the dryland forest of Selil Village, Ulilin District, Merauke Regency, South Papua Province. This study employed a quantitative-descriptive approach based on a field survey using the National Forest Inventory (Inventarisasi Hutan Nasional/IHN) 2.0 method. Species diversity was analyzed using the Shannon–Wiener index, biomass was estimated using the Chave allometric equation, while carbon stock and carbon sequestration were calculated based on the IPCC conversion factor. The results showed that 64 individual trees representing 7 species were recorded within the cluster plot, namely kelat (Eugenia densiflora), jale (Casuarina papuana), resak (Vatica papuana), kapur (Dryobalanops aromatica), bintangur (Calophyllum papuanum), wild nutmeg (Myristica sp.), and merawan (Hopea papuana). Species diversity was classified as moderate (1 < 1.477 < 3). The most dominant species was kelat (Eugenia densiflora) with an Important Value Index (IVI) of 100.304, followed by resak (Vatica papuana) with 68.522 and jale (Casuarina papuana) with 49.023. The total above ground tree biomass was 141.228 tons/ha, with the largest contribution coming from kelat (Eugenia densiflora), jale (Casuarina papuana), and resak (Vatica papuana). This biomass produced a carbon stock of 66.377 tons C/ha and carbon sequestration of 243.383 tons CO₂/ha. The diameter class of 40 cm up contributed the greatest share to biomass and carbon, accounting for 70.71% of the total biomass. This indicates that large diameter trees play a major role in climate mitigation, are important as natural carbon sinks, and provide baseline data that can be used to support sustainable forest management and climate change mitigation policies in South Papua.
Model Dinamika Sistem Pengelolaan Hutan Lindung Berbasis Causal Loop Diagram Widiastuty, Wiwid; Walukow, Auldry F.; Siallagan, Johnson; Manalu, Janviter; Warpur, Maklon
Jurnal Inovasi Global Vol. 4 No. 4 (2026): Jurnal Inovasi Global
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jig.v4i4.529

Abstract

Protected forest management is a complex issue because it is influenced by the interaction of interrelated social, economic, and environmental factors. Sectoral approaches are often not able to explain the cause-and-effect relationship comprehensively, so a dynamic systems approach is needed. This research aims to analyze the management system of protected forests using a causal loop diagram (CLD) approach in Mamberamo Tengah Regency. The research employed a mixed-method approach, including questionnaires, interviews, and land cover change analysis. The results indicate that forest management is influenced by the interaction of social, economic, and environmental factors. Reinforcing loops are dominated by economic dependency and forest exploitation, leading to increased forest degradation. Meanwhile, balancing loops are formed through improved knowledge, awareness, and government support, which promote conservation and forest protection. Key leverage points include alternative economic development, community education, institutional strengthening, and control of external exploitation. The model highlights the importance of a system dynamics approach for sustainable forest management.
Co-Authors A. Asmuruf, Frans Abulais, Diana Agnes Eri Maryuni Asmuruf, Frans Ayomi, Erna Ferderika Basa T Rumahorbo BLESKADIT CHATERINE DAMAYANTI Cheny Adetyaningsih Cionita, Tezara Demas R. Yaam Diana M. Abulais Fara, Ressy Rosalini Fitriyana, Deni Fajar Florida Doloksaribu Guterres, Natalino Fonseca Da Silva Himawan Himawan Husain Husain Hutahaean, Rita Donna Hutapea, Musa B. Kano, Christina Paulina Lodwyk Nomenzen Krimadi Maklon Warpur Mamberuman M. Inggamer Manalu, Janviter Marice Karubaba Martha K. Sefa Muhammad Syawal Natasha Sihite Ortis Fredy Waromi Pramesti, Santinia Andiva Riando, Kopanye Siahainenia, Armand Ronald Siregar, Januar Parlaungan Suebu, Erni Fitri Tiurlina Siregar Tonapa, Veronika Gina Verena Agustini VIRMAN VIRMAN Virman, Virman Walukouw, Auldry F Widiastuty, Wiwid Widiawati, Reni Yabansabra, Yuliana Ruth