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Analysis of Air Distribution in a Double Tube Model Heat Exchanger System using Computational Fluid Dynamic (CFD) Reniana, Reniana; Darma, Darma; Payung, Paulus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.763-771

The double-tube model heat exchanger has a construction of three tube cylinders arranged into one. This model of heat exchanger has a fairly simple construction, making it easier to manufacture and speeding up the manufacturing process. Computational Fluid Dynamics (CFD) is software that can be used to optimize the design and performance evaluation process as well as to speed up the process and minimize costs in tool development because it can represent phenomena that occur in a system. This research aims to analyze air distribution in a double tube model heat exchanger system using CFD analysis and to validate the analysis results with experiments. Based on the research results, a double tube model heat exchanger has been created with an average performance of output temperature and air velocity reaching 97.8oC and 10.4 m/s at a coconut shell fuel consumption of 0.24 kg/minute. The results of evaluating experimental data with simulations obtained RMSE values between 59.33 – 71.69, and MAPE values between 26.26 – 32.93. Meanwhile, the results of the Paired Sample T-Test show that there is no real difference between experimental data and simulation data with an R-value of 0.875 – 0.964. CFD analysis in this research can be used as a reference in the optimization process and development of heat exchangers, especially double-tube models. Keywords: CFD, Design, Double-Tube. Heat Exchanger, Simulation,

Optimalisasi sumber informasi ilmiah open access dalam mendukung proses pembelajaran pada masa pandemi Covid-19 di Universitas Bangka Belitung Kusuma, Arja; Darma, Darma
Daluang: Journal of Library and Information Science Vol. 2 No. 1 (2022)
Publisher : UPT Perpustakaan Universitas Islam Negeri Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/daluang.v2i1.2022.10154

Background. This article explains how the Bangka Belitung University Library optimizes open access scientific information sources in supporting the learning process at Bangka Belitung University during the Covid-19 pandemic. As is known, during the pandemic, it is impossible to access services face-to-face at the library.Methods. The research method used in this research is a descriptive qualitative research method. The instrument in this study was the researcher himself. This research was conducted at Library of Bangka Belitung University, the data in this study were collected with observation techniques and documentation related to the optimization of open access scientific information sources in support of the learning process at Bangka Belitung University.Results and discussion. Optimizing the use of open access scientific information sources can be done by, firstly making selected information services from open access scientific information sources, secondly providing search assistance services and downloading electronic books and journals, thirdly through socialization through webinars, social media and user education.Conclusions. The many and varied sources of open access scientific information can be optimized for use in supporting the learning process at Bangka Belitung University, especially during the COVID-19 pandemic

PENINGKATAN KREATIVITAS DALAM PEMBUATAN KUE BERBAHAN BAKU TEPUNG SAGU PADA KAMPUNG BAINGKETE KABUPATEN SORONG murtingrum, Murtiningrum; Ponisri, Ponisri; Farida, Anif; Mangallo, Bertha; Darma, Darma; Abu, Nur; Hasa, Muh. Fadli
RESONA : Jurnal Ilmiah Pengabdian Masyarakat Vol 8, No 1 (2024): June
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah (LPPI) Universitas Muhammadiyah Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35906/resona.v8i1.1850

Sagu memiliki potensi sebagai sumber pangan kaya kalori dan karbohidrat yang setara dengan beras. Distribusi luas tanaman sagu di Indonesia menjadikannya bahan pangan alternatif potensial untuk produk seperti tepung sagu, sirup, kue, mie, dan bio-etanol. Preferensi konsumen terhadap produk sagu menjadi kunci dalam strategi pemasaran. Kampung Baingkete di Kabupaten Sorong memiliki potensi besar dalam sumber daya alam, terutama sagu yang telah menjadi bagian integral kehidupan masyarakat untuk produksi tepung sagu dan produk olahan tradisional. Kegiatan ini bertujuan meningkatkan kreativitas pembuatan kue berbahan sagu, ekonomi lokal, dan pelestarian budaya. Metode meliputi sosialisasi, pelatihan, demonstrasi, monitoring, dan evaluasi. Pelatihan di Kampung Baingkete menghasilkan kue berbahan sagu seperti brownies sagu, kue gabus, chookies sagu coklat, dan chookies sagu keju. Kegiatan ini diharapkan menambah nilai ekonomi masyarakat, membuka pasar baru, meningkatkan daya saing produk lokal, serta melestarikan kearifan lokal dan penggunaan sumber daya alam secara berkelanjutan. Pre-test dan post-test menunjukkan peningkatan pengetahuan dan keterampilan kelompok PKK sebesar 55%. Abstract. Sago has the potential as a high-calorie and carbohydrate-rich food source, comparable to rice. The wide distribution of sago plants in Indonesia makes it a viable alternative food source for products like sago flour, syrup, cakes, noodles, and bio-ethanol. Consumer preference for sago products is crucial for marketing strategies. Baingkete Village in Sorong Regency has significant natural resource potential, especially sago, which is integral to local life for sago flour and traditional products. The activity aims to enhance creativity in sago-based cake making, boost the local economy, and preserve local culture. Methods include socialization, training, demonstration, monitoring, and evaluation. Training in Baingkete Village produced sago-based cakes such as sago brownies, kue gabus, chocolate sago cookies, and cheese sago cookies. This activity is expected to add economic value to the community, open new market opportunities, increase local product competitiveness, and preserve local wisdom and sustainable natural resource use. Pre-test and post-test evaluations showed a 55% increase in the knowledge and skills of the PKK group.

PENINGKATAN HASIL BELAJAR DALAM PEMBELAJARAN PENDIDIKAN KEWARGANEGARAAN (PKn) DENGAN MENGGUNAKAN KOOPERATIF STAD Darma, Darma
e-Jurnal Inovasi Pembelajaran Sekolah Dasar Vol 1, No 1 (2013): (Januari-Juli) e-JIPSD
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/e-jipsd.v1i1.272

The purpose of this study was to describe the improvement of student learning outcomes in learning Civics with type STAD cooperative approach in 13 fifth grade elementary school Sungai Aur. The approach used in this study is a qualitative and quantitative approach consisting of two cycles, and each cycle of planning, implementation, observation, and reflection. The subjects were students of class V SDN 13 Sungai Aur. Civics learning outcomes using type STAD cooperative approach has increased. In planning an increase from the first cycle is 76.75% (enough) to 96.4% (very good) in the second cycle. On the implementation of aspects of teacher learning that the first cycle of 74.95% (average) to 91.7 (very good) in the second cycle. Then the student aspect of the first cycle, from 73.6% (enough) to 94.4% (very good) in the second cycle. Learning outcomes can be seen in the recapitulation of the second cycle of student learning outcomes is higher when compared with the first cycle is 71.8% (average) and the second cycle is 85.45% (both) seen an increase of about 13.65%. It can be concluded that the type STAD cooperative approach to improve student learning outcomes in the classroom V SD Negeri 13 Sungai Aur. Kata kunci: peningkatan; hasil; belajar; kooperatif; stad.

Sosialisasi Pemanfaatan Internet Sebagai Media Pemasaran Produk Hasil Olahan Sagu Papua di Kampung Baingkete Hasa, Muh Fadli; Ponisri, Ponisri; Farida, Anif; Darma, Darma; Mangallo, Bertha; Murtiningrum, Murtiningrum; Abu, Nur
Abdimas Galuh Vol 6, No 1 (2024): Maret 2024
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v6i1.12792

Pemanfaatan internet dapat mengurangi ketergantungan pada saluran pemasaran konvensional dan membuka peluang kerjasama dengan pelaku usaha di luar daerah. Dalam konteks pemasaran produk lokal, pemanfaatan internet sebagai media pemasaran menawarkan potensi besar dalam mendukung pertumbuhan bisnis lokal dan memperluas akses pasar. Kampung Baingkete, yang terletak di Distrik Makbon, Kabupaten Sorong, Papua Barat Daya, memiliki potensi utama yaitu dalam bidang pertanian, terutama dalam pengolahan tanaman sagu. Potensi pertanian ini memberikan peluang untuk meningkatkan ketahanan pangan masyarakat setempat dan mendukung pengembangan produk olahan lokal. Kehadiran internet di kampung Beingkete menjadi hal yang positif bagi penduduk setempat. Namun, kehadiran internet masih terbatas pada penggunaannya sebagai alat komunikasi dan belum sepenuhnya dimanfaatkan untuk kegiatan pemasaran produk lokal. Permasalahan yang terjadi adalah kurangnya pemahaman mengenai cara memanfaatkan internet secara efektif untuk kegiatan pemasaran produk. Untuk itu, perlu dilakukan sosialisasi yang bertujuan untuk meningkatkan pemahaman masyarakat terkait manfaat dan potensi internet dalam mempromosikan produk-produk lokal.

Muslim community communication through cross-religious social interaction in the Mardika market Ambon, Moluccas Sakinah, Nur; Darma, Darma; Sulaeman, Sulaeman; Fitriyani, Andi; Kella, Nurida; Ren'el, Baiti
Jurnal Ilmu Dakwah Vol. 44 No. 1 (2024)
Publisher : Faculty of Dakwah and Communication, Walisongo State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jid.v44.1.20473

Purpose – This article aims to map research by elaborating on cross-religious relationships and social interaction communication for the Muslim community in Mardika Market, Ambon City, Maluku.Method – Blumer's theoretical exploration is used with a constructivist paradigm and phenomenological communication method as fundamental references. This review is developed based on input from mardika market management coordinator and identifies current field research obtained qualitatively through several informal conversational interviews and observations of various gaps in social interactions.Results – The article highlights the complexity of cross-religious social interactions impacting intrapersonal, interpersonal, and group communication for the Muslim community in Mardika Market. It begins with understanding cross-religious social interaction relationships and communication events, then finds patterns of communication relationships within the Muslim community.Implications – This article contributes to realize cross-religious harmonization by discussing the search for the meaning of social interactions with the hope of living together peacefully. Strengthening social interactions is very important as it tends to reduce the incidence of cross-religious conflicts. This contribution offers opportunities for social interaction accommodation and ways to avoid cross-religious tensions.Originality/Value – Many published articles focus on cross-religious relationships by detailing the tensions and benefits of cross-religious social interactions, but they are still lacking. However, this study presents the phenomenological communication method and constructivist paradigm to observe the development of communication within the Muslim community engaging in cross-religious social interactions in Mardika Market, Ambon City, Moluccas.***Tujuan – Artikel ini adalah untuk memetakan penelitian dengan mengelaborasi hubungan lintas agama, dan komunikasi interaksi sosial lintas agama bagi komunitas Muslim di pasar Mardika Kota Ambon, Maluku.Metode – Dengan menggunakan penelusuran teoretis dari Blumer dengan paradigma konstruktivis dan metode fenomenologi komunikasi sebagai acuan mendasar. Tinjauan ini dikembangkan berdasarkan masukan dari koordinator pengelola pasar mardika, dan mengidentifikasi kekinian penelitian di lapangan yang diperoleh secara kualitatif melalui beberapa wawacara percakapan informal, dan pengamatan dari berbagai kesenjangan dalam interaksi sosial.Hasil – Artikel menyoroti betapa kompleksnya interaksi sosial lintas agama berdampak pada komunikasi intrapribadi, antarpribadi, dan kelompok bagi komunitas Muslim di pasar mardika. Diawali dengan pemahaman hubungan interaksi sosial lintas agama, dan peristiwa komunikasi, kemudian menemukan pola hubungan komunikasi komunitas Muslim. Implikasi – Kontribusi artikel ini untuk mewujudkan harmonisasi lintas agama melalui pembahasan pencarian makna interaksi sosial dengan harapan dapat hidup bersama secara damai. Penguatan interaksi sosial sangat penting karena cenderung menurunkan insiden konflik lintas agama. Kontribusi ini menawarkan peluang akomodasi interaksi sosial dan cara untuk menghindari ketegangan lintas agama.Orisinalitas/Nilai – Banyak artikel terpublikasi hingga saat ini terfokus pada hubungan lintas agama dengan menguraikan ketegangan dan manfaat interaksi sosial lintas agama masih kurang. Namun kajian ini menyajikan metode fenomenologi komunikasi dan paradigma konstruktivis untuk mengamati pengembangan komunikasi komunitas Muslim melakukan tindakan interaksi sosial lintas agama di pasar Mardika Kota Ambon, Maluku.

Kemampuan Guru Dalam Penggunaan Teknologi Interaktif Pada Proses Pembelajaran IPAS Di UPT SPF SD Negeri Bawakaraeng II Makassar Darma, Darma; Hamid, Sundari; Muliati, Muliati
Jounal of Primary Education Vol 6 No 1 (2025): Bosowa Journal of Education, Desember 2025
Publisher : Postgraduate Bosowa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/bje.v6i1.6081

Tujuan penelitian ini adalah: 1) Mengidentifikasi faktor-faktor internal dan eksternal yang mempengaruhi kemampuan guru dalam mengintegrasikan teknologi interaktif dalam pembelajaran IPAS di UPT SPF SD Negeri Bawakaraeng II; 2) Mengidentifikasi strategi yang tepat dan efektif untuk meningkatkan kemampuan guru dalam pemanfaatan teknologi interaktif dalam pembelajaran IPAS di UPT SPF SD Negeri Bawakaraeng II. Metode penelitian yang digunakan adalah pendekatan kualitatif dengan teknik pengumpulan data melalui observasi, wawancara dan dokementasi. Hasil penelitian menunjukkan bahwa kemampuan guru dipengaruhi oleh faktor internal seperti keterampilan, pengetahuan, motivasi, dan sikap positif guru, serta faktor eksternal seperti dukungan manajemen sekolah, fasilitas, kebijakan pendidikan, dan keterlibatan orang tua. Di UPT SPF SD Negeri Bawakaraeng II, tantangan seperti pemeliharaan perangkat dan gangguan koneksi internet masih menjadi hambatan. Strategi untuk meningkatkan kemampuan guru meliputi pelatihan dan workshop berkala, pembentukan komunitas belajar, dukungan manajemen sekolah, keterlibatan orang tua dan penciptaan budaya inovasi. Penelitian ini menyimpulkan bahwa integrasi teknologi interaktif yang sukses memerlukan pendekatan sistematis dan terencana. Dengan menerapkan strategi yang direkomendasikan, diharapkan guru dapat menciptakan lingkungan pembelajaran yang lebih interaktif, relevan, dan efektif, serta mempersiapkan siswa untuk menghadapi tantangan di era digital. This study aims to: (1) Identify internal and external factors influencing teachers' ability to integrate interactive technology in IPAS learning at UPT SPF SD Negeri Bawakaraeng II; (2) Identify appropriate and effective strategies to enhance teachers' ability in utilizing interactive technology in IPAS learning at UPT SPF SD Negeri Bawakaraeng II. This research employs a qualitative approach with data collection techniques including observation, interviews, and documentation. The findings reveal that teachers' ability is influenced by internal factors such as skills, knowledge, motivation, and positive attitudes, as well as external factors like school management support, facilities, educational policies, and parental involvement. At UPT SPF SD Negeri Bawakaraeng II, challenges such as device maintenance and internet connectivity issues remain obstacles. Strategies to improve teachers’ capabilities include regular training and workshops, the formation of learning communities, school management support, parental involvement, and fostering an innovation culture. This study concludes that successful integration of interactive technology requires a systematic and well-planned approach. By implementing the recommended strategies, teachers are expected to create a more interactive, relevant, and effective learning environment while preparing students to face challenges in the digital era.

Introduksi mesin pengolahan sagu untuk meningkatkan produksi pati di Kampung Sidey Makmur: Introduction of sago processing machines to enhance starch production in Sidey Makmur Village, Sidey District, Manokwari Regency Situngkir, Risma U.; Darma, Darma; Reniana, Reniana
IGKOJEI: Jurnal Pengabdian Masyarakat Vol. 7 No. 2 (2026): IGKOJEI: Jurnal Pengabdian Masyarakat
Publisher : Fakultas Peternakan Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46549/igkojei.v7i2.635

ABSTRACT Small-scale community-based sago processing in West Papua has high potential, but production at the household level remains limited due to manual processing practices. This community service program aimed to strengthen household sago processing capacity in Sidey Makmur Village, Sidey District, Manokwari Regency through the introduction of a semi-mechanical processing system using a cylinder-type rasping machine (variant-02), training, and on-site technical mentoring. Program performance was evaluated through direct observation of partner operation and production outcomes. The intervention reduced processing time to about 15.5 hours per tree (1 tree per 2 days), achieved rasping capacity of 490 kg/hour, and increased fresh sago starch production from 180 kg/week to 524 kg/week. The results indicate that appropriate technology transfer improves production efficiency, supports operational skill development among partners, and opens greater opportunities for local income improvement. Keywords: community service; Manokwari Regency; sago starch; semi-mechanical processing; technology transfer ABSTRAK Pengolahan sagu skala rumah tangga berbasis masyarakat di Papua Barat memiliki potensi besar, namun produktivitasnya masih terbatas karena proses yang dominan manual. Program pengabdian ini bertujuan meningkatkan kapasitas pengolahan sagu di Kampung Sidey Makmur, Distrik Sidey, Kabupaten Manokwari melalui introduksi sistem pengolahan semi-mekanis menggunakan mesin pemarut tipe silinder varian-02, pelatihan, dan pendampingan teknis di lapangan. Evaluasi dilakukan melalui observasi langsung terhadap pengoperasian mesin dan capaian produksi mitra. Hasil kegiatan menunjukkan waktu pengolahan sekitar 15,5 jam per pohon (1 pohon per 2 hari), kapasitas pemarutan 490 kg/jam, serta peningkatan produksi pati sagu segar dari 180 kg/minggu menjadi 524 kg/minggu. Kegiatan ini menunjukkan bahwa alih teknologi tepat guna dapat meningkatkan efisiensi proses, memperkuat keterampilan operasional mitra, dan membuka peluang peningkatan pendapatan masyarakat. Kata kunci: Alih Teknologi; Kabupaten Manokwari; Pati Sagu; Pengabdian Masyarakat; Pengolahan Semi-Mekanis

Kemampuan Guru Dalam Penggunaan Teknologi Interaktif Pada Proses Pembelajaran IPAS Di UPT SPF SD Negeri Bawakaraeng II Makassar Darma, Darma; Hamid, Sundari; Muliati, Muliati
Jounal of Primary Education Vol 6 No 1 (2025): Bosowa Journal of Education, Desember 2025
Publisher : Postgraduate Bosowa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/bje.v6i1.6081

Tujuan penelitian ini adalah: 1) Mengidentifikasi faktor-faktor internal dan eksternal yang mempengaruhi kemampuan guru dalam mengintegrasikan teknologi interaktif dalam pembelajaran IPAS di UPT SPF SD Negeri Bawakaraeng II; 2) Mengidentifikasi strategi yang tepat dan efektif untuk meningkatkan kemampuan guru dalam pemanfaatan teknologi interaktif dalam pembelajaran IPAS di UPT SPF SD Negeri Bawakaraeng II. Metode penelitian yang digunakan adalah pendekatan kualitatif dengan teknik pengumpulan data melalui observasi, wawancara dan dokementasi. Hasil penelitian menunjukkan bahwa kemampuan guru dipengaruhi oleh faktor internal seperti keterampilan, pengetahuan, motivasi, dan sikap positif guru, serta faktor eksternal seperti dukungan manajemen sekolah, fasilitas, kebijakan pendidikan, dan keterlibatan orang tua. Di UPT SPF SD Negeri Bawakaraeng II, tantangan seperti pemeliharaan perangkat dan gangguan koneksi internet masih menjadi hambatan. Strategi untuk meningkatkan kemampuan guru meliputi pelatihan dan workshop berkala, pembentukan komunitas belajar, dukungan manajemen sekolah, keterlibatan orang tua dan penciptaan budaya inovasi. Penelitian ini menyimpulkan bahwa integrasi teknologi interaktif yang sukses memerlukan pendekatan sistematis dan terencana. Dengan menerapkan strategi yang direkomendasikan, diharapkan guru dapat menciptakan lingkungan pembelajaran yang lebih interaktif, relevan, dan efektif, serta mempersiapkan siswa untuk menghadapi tantangan di era digital. This study aims to: (1) Identify internal and external factors influencing teachers' ability to integrate interactive technology in IPAS learning at UPT SPF SD Negeri Bawakaraeng II; (2) Identify appropriate and effective strategies to enhance teachers' ability in utilizing interactive technology in IPAS learning at UPT SPF SD Negeri Bawakaraeng II. This research employs a qualitative approach with data collection techniques including observation, interviews, and documentation. The findings reveal that teachers' ability is influenced by internal factors such as skills, knowledge, motivation, and positive attitudes, as well as external factors like school management support, facilities, educational policies, and parental involvement. At UPT SPF SD Negeri Bawakaraeng II, challenges such as device maintenance and internet connectivity issues remain obstacles. Strategies to improve teachers’ capabilities include regular training and workshops, the formation of learning communities, school management support, parental involvement, and fostering an innovation culture. This study concludes that successful integration of interactive technology requires a systematic and well-planned approach. By implementing the recommended strategies, teachers are expected to create a more interactive, relevant, and effective learning environment while preparing students to face challenges in the digital era.

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