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All Journal Jurnal Teknik Sipil Publika Budaya Jurnal Transportasi Indonesian Journal of Forestry Research Jurnal Ilmiah Mahasiswa FEB KEMBARA EDULITE: Journal of English Education, Literature and Culture JURNAL SIPIL SAINS JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Lentera: Jurnal Ilmiah Kependidikan Diglosia: Jurnal Kajian Bahasa, Sastra, dan Pengajarannya ELLITE: Journal of English Language, Literature, and Teaching Media Ilmiah Teknik Sipil Portal: Jurnal Teknik Sipil JEECAE (Journal of Electrical, Electronics, Control, and Automotive Engineering) JURNAL CRANKSHAFT Jurnal Sosial dan Teknologi Journal of Feminism and Gender Studies Journal of the Civil Engineering Forum Nanggroe: Journal Of Scholarly Service Science and Education Journal Nanggroe: Journal of Scholarly Service Jurnal Polimesin Equality
Imam Basuki
Center for International Forestry Research, Jl. CIFOR Situ Gede, Bogor
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Transportation Other

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Konsep Transportasi Umum Berkelanjutan : Studi Kasus Bus Listrik di Yogyakarta Chuadinata, Steven; Basuki, Imam
JURNAL SIPIL SAINS Vol 14, No 1 (2024)
Publisher : Program Stud Teknik Sipil Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/sipilsains.v14i1.8305

Abstract

Transportasi umum yang berkelanjutan menjadi salah satu fokus utama dalam upaya mitigasi perubahan iklim dan peningkatan kualitas udara di perkotaan. Studi ini mengkaji implementasi bus listrik di Yogyakarta sebagai bagian dari upaya menciptakan sistem transportasi umum yang berkelanjutan. Penelitian ini bertujuan untuk mengevaluasi dampak lingkungan, ekonomi, dan sosial dari penggunaan bus listrik, serta mengidentifikasi tantangan dan peluang dalam penerapannya. Perencanaan bus listrik di Yogyakarta dibuat untuk menggantikan bus trans Yogyakarta yang berbahan bakar BBM yang sangat meringankan emisi dengan selisih jumlah 92.046 kg COâ‚‚ dan total estimasi biaya yang diperlukan dalam perencanaan bus lsitrik ini adalah sebesar Rp. 4.148.600.000 dengan biaya pemeliharaan tiap tahun sebesar Rp. 575.325.565,-.Kata kunci: Bus Trans Yogya, Bus Listrik
EVALUASI DAN PENGEMBANGAN KEBUTUHAN FASILITAS DI PELABUHAN SAMPIT UNTUK MENDUKUNG KEMAJUAN WILAYAH KABUPATEN KOTAWARINGIN TIMUR Veronika, Friska; Basuki, Imam
JURNAL SIPIL SAINS Vol 14, No 1 (2024)
Publisher : Program Stud Teknik Sipil Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/sipilsains.v14i1.8306

Abstract

Pelabuhan Sampit merupakan pelabuhan penting yang menjadi pintu gerbang utama memasuki wilayah Provinsi Kalimantan Tengah dalam keluar masuknya penumpang dan barang ke atau dari Pulau Jawa, selalu mengalami peningkatan arus lalu lintas tiap tahunnya yang tidak di ikuti dengan evaluasi serta pengembangan fasilitas kebutuhan pelabuhan, berpotensi terjadi antriannya kapal yang lama, proses bongkar muat lambat dan penumpang tidak mendapat pelayanan fasilitas yang maksimal. Maka perlu dilakukan identifikasi kinerja operasional pelayanan, faktor-faktor mempengaruhi dan kebutuhan fasilitas di Pelabuhan Sampit. Hasil menunjukan berdasarkan peraturan Dirjen Hubla kinerja operasional pelabuhan secara umum baik, hanya ada 3 (tiga) indikator yang kurang baik yaitu approach time (AT), effective time/berthing time (ET/BT), dan ton/ship/hour (T/S/H). Hasil faktor-faktor yang memepengaruhi arus lalu lintas di Pelabuhan Sampit menujukan model terbaik arus muat adalah Y1 = 29,953 + 0,016 dimana PDRB pertanian (X1), arus bongkar adalah Y2 = 26,255 + 0,053 X2 dimana PDRB industri (X2), arus penumpang adalah Y3 = 101,514 + 0,068 X2 dimana pendapatan perkapita (X2) dan arus kapal adalah Y4 = 24,730 + 0,41 X3 dimana pendapatan perkapita (X3). Hasil peramalan arus muat, arus bongkar, arus penumpang dan arus kapal dari kebutuhan fasilitas pelabuhan menunjukan pada Tahun 2032 fasilitas lapangan penumpukan sebesar 870.567 m2 dan terminal penumpang sebesar 86,67 m2 masih memenuhi sedangkan fasilitas panjang dermaga perlu dilakukan penambahan sebesar 386 m. Kata Kunci : Evaluasi kinerja operasional pelayanan, regresi linier dan peramalan (forecasting
PENGARUH FREE CASH FLOW TERHADAP NILAI PERUSAHAAN DENGAN AGENCY COST SEBAGAI VARIABEL INTERVENING (Studi Pada Perusahaan Sektor Industri Barang Konsumsi Yang Terdaftar Di Bursa Efek Indonesia) Basuki, Imam
Jurnal Ilmiah Mahasiswa FEB Vol. 4 No. 2
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

     Penelitian ini bertujuan untuk mengetahui pengaruh free cash flow terhadap nilai perusahaan, mengetahui pengaruh free cash flow terhadap agency cost, mengetahui pengaruh agency cost terhadap nilai perusahaan, dan mengetahui pengaruh free cash flow terhadap nilai perusahaan  melalui  agency  cost.  Populasi  pada  penelitian  ini  adalah  perusahaan  sektor industri barang konsumsi yang terdaftar di Bursa Efek Indoneisa dengan periode pengamatan tahun 2012 – 2014. Berdasarkan kriteria populasi yang telah ditetapkan, diperoleh jumlah perusahaan yang memenuhi kriteria sebanyak 15 perusahaan. Teknik pengambilan sampel yang  digunakan  adalah  mengunakaan  seluruh  jumlah  populasi  (sampel  jenuh).  Metode analisis yang digunakan untuk menguji hipotesis yang diajukan adalah analisis jalur (Path Analysis). Hasil peneilitian menemukan bahwa free cash flow berpengaruh signifikan dan positif terhadap nilai perusahaan, free cash flow berpengaruh signifikan dan negatif terhadap agency cost yang diproksikan dengan asset turnover, agency cost yang diproksikan dengan asset turnover berpengaruh signifikan dan negatif terhadap nilai perusahaan, dan free cash flow berpengaruh signfikan dan positif terhadap nilai perusahaan melalui agency cost. Kata Kunci : Free Cash Flow, Agency Cost, Nilai Perusahaan
GIS-Based Land Suitability Analysis for a Tourism Airport in Bulukumba Regency, South Sulawesi, Indonesia Dg Bau, Qadriathi; Adisasmita, Sakti Adji; Kamin, Yusi; Abdullah, Sulaiman; Basuki, Imam
Journal of the Civil Engineering Forum Vol. 12 No. 1 (January 2026)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.17947

Abstract

Bulukumba Regency is renowned for its rich cultural heritage and diverse tourism potential, positioning it as a prominent destination at both national and international levels. However, limited transportation infrastructure—particularly the absence of a local airport—presents significant accessibility challenges. Travel from Sultan Hasanuddin International Airport to Bulukumba requires approximately six hours by land, which hinders tourism development. This study aims to address this gap by: (1) identifying the most suitable location for a tourism-focused airport using the Analytical Hierarchy Process (AHP), and (2) generating a spatial suitability map for potential airport sites through GIS-based analysis. A weighted hierarchical quantitative approach was employed, using selection criteria based on the Indonesian Ministry of Transportation Regulation No. PM 55/2023 outlines seven key aspects and associated sub-criteria for airport site selection. Each criterion was assigned a weight reflecting its relative importance, followed by AHP analysis to determine the priority values of sub-criteria. The resulting weights were integrated into a Geographic Information System (GIS) to conduct spatial overlay analysis and identify optimal locations. The analysis identified Ara Village and Caramming Village as the most suitable locations for a tourism airport, with the highest composite score (226). Three alternative airport site maps were also produced, offering spatial options for future development. This study provides crucial insights to improve regional connectivity and support sustainable tourism growth in Bulukumba Regency.
Evaluasi Tingkat Keselamatan Jalan Berdasarkan Pemeringkatan Bintang Menurut Pedoman Teknis ULFJ No. 06/P/BM/2024 (Studi Kasus: Ruas Jalan Maruni–Batas Kota Manokwari) Parerung, Fretty Sumbung; Basuki, Imam
Portal: Jurnal Teknik Sipil Vol 17, No 2 (2025): October Edition
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v17i2.7328

Abstract

Ruas Jalan Maruni–Batas Kota Manokwari memiliki peran strategis sebagai jalur utama penghubung antarwilayah di Papua Barat. Namun, peningkatan volume lalu lintas dan kondisi jalan yang bervariasi menimbulkan tantangan terhadap keselamatan pengguna jalan. Penelitian ini bertujuan untuk mengevaluasi tingkat keselamatan jalan dengan metode Pemeringkatan Bintang berdasarkan Pedoman Teknis ULFJ No. 06/P/BM/2024, serta membandingkannya dengan metode International Road Assessment Programme (iRAP). Metode penelitian meliputi survei lapangan pada 176 segmen jalan sepanjang 17,52 km, analisis visual infrastruktur, dan penilaian kondisi perkerasan menggunakan Pavement Condition Index (PCI). Hasil penelitian menunjukkan bahwa rata-rata pemeringkatan bintang berdasarkan pedoman nasional adalah 3 (skor 9,19), sedangkan metode iRAP menghasilkan rata-rata 2 bintang (skor 15,20), yang menandakan pendekatan iRAP lebih konservatif terutama pada segmen dengan kondisi kerusakan perkerasan. Nilai PCI menunjukkan 99% ruas jalan dalam kondisi baik hingga sangat baik, namun beberapa segmen dengan kerusakan permukaan memiliki tingkat keselamatan rendah. Penelitian ini menyimpulkan bahwa evaluasi dengan metode Pemeringkatan Bintang efektif dalam mengidentifikasi segmen kritis untuk perbaikan. Rekomendasi perbaikan meliputi pengaspalan ulang, pemasangan rambu dan marka jalan, penerangan, zebra cross, dan fasilitas pejalan kaki. Diharapkan hasil penelitian ini dapat menjadi acuan kebijakan peningkatan keselamatan jalan secara berkelanjutan.
ANALISIS KEKUATAN MATERIAL KOMPOSIT POLYESTER BERPENGUAT SERAT SISAL DAN SERBUK KAYU MAHONI DENGAN VARIASI FRAKSI VOLUME MATRIKS DAN REINFORCEMENT Ahdiat Fakhrudi, Yoga; Basuki, Imam; Ulum, Miftahul
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16599

Abstract

The purpose of this study is to examine how changing the volume percentage of sisal fiber and mahogany wood powder composites can improve their mechanical qualities. The hand lay-up method was used to create composites with a set resin volume fraction of 50% and varying volume fractions of sisal fiber and mahogany sawdust (30%:20%, 35%:15%, 40%:10%, 45%:5%, and 50%:0%). The tensile test (ASTM D638), bending test (ASTM D790), and impact test (ISO 179-1) were among the tests. According to the results, the best impact toughness (70.34 KJ/mm²) was achieved with a combination of 45% fiber and 5% powder. The composition with the maximum tensile strength (23.36 MPa), strain (0.041%), and elastic modulus (574.20 Pa) was 40% fiber and 10% powder; the composition with the highest bending strength (124.50 N/mm²) was 50% fiber and 0% powder. The best composition from the impact test—45% fiber and 5% powder—is used in this study's rearview mirror cover product.
Optimizing injection pressure for diesel engines fueled with waste cooking oil biodiesel blends Aminudin, Achmad; Pamungkas, Doni Setyo; Basuki, Imam; Romandoni, Nanang; Nisa, Nur Ihda Farikhatin; Wardana, Kelvin Dwi
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.7819

Abstract

This study examines the effects of used cooking oil biodiesel and injection pressure on diesel engine performance and emissions. Highlights the combined effects of injection pressure and biodiesel blends. The fuel mixtures used were Pertamina Dex (B0), B50 (50% biodiesel), and B65 (65% biodiesel), with injection pressures of 160, 170, and 180 bar. Tests were conducted on a Dongfeng S195 diesel engine with a load of 1000–5000 watts. The parameters tested included fuel characteristics (density, viscosity, flash point, and calorific value), Brake Specific Fuel Consumption (BSFC), Brake Thermal Efficiency (BTE), and exhaust gas opacity. The results show that injection pressure plays a critical role in optimizing biodiesel combustion. The B65 blend at an injection pressure of 170 bar produced the lowest BSFC of 279.30 g/kWh and a high BTE of 25.54%, approaching that of pure diesel. In terms of emissions, the lowest opacity value of 5.88% was achieved with the B65 blend at 180 bar. These findings demonstrate that an optimal injection pressure, particularly 170 bar, can significantly improve fuel efficiency and combustion performance of high-percentage biodiesel blends while reducing exhaust smoke. Thus, used cooking oil biodiesel can improve fuel safety and efficiency as well as reduce emissions, provided it is combined with optimal injection pressure.
GIS-Based Land Suitability Analysis for a Tourism Airport in Bulukumba Regency, South Sulawesi, Indonesia Dg Bau, Qadriathi; Adisasmita, Sakti Adji; Kamin, Yusi; Abdullah, Sulaiman; Basuki, Imam
Journal of the Civil Engineering Forum Vol. 12 No. 1 (January 2026)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.17947

Abstract

Bulukumba Regency is renowned for its rich cultural heritage and diverse tourism potential, positioning it as a prominent destination at both national and international levels. However, limited transportation infrastructure—particularly the absence of a local airport—presents significant accessibility challenges. Travel from Sultan Hasanuddin International Airport to Bulukumba requires approximately six hours by land, which hinders tourism development. This study aims to address this gap by: (1) identifying the most suitable location for a tourism-focused airport using the Analytical Hierarchy Process (AHP), and (2) generating a spatial suitability map for potential airport sites through GIS-based analysis. A weighted hierarchical quantitative approach was employed, using selection criteria based on the Indonesian Ministry of Transportation Regulation No. PM 55/2023 outlines seven key aspects and associated sub-criteria for airport site selection. Each criterion was assigned a weight reflecting its relative importance, followed by AHP analysis to determine the priority values of sub-criteria. The resulting weights were integrated into a Geographic Information System (GIS) to conduct spatial overlay analysis and identify optimal locations. The analysis identified Ara Village and Caramming Village as the most suitable locations for a tourism airport, with the highest composite score (226). Three alternative airport site maps were also produced, offering spatial options for future development. This study provides crucial insights to improve regional connectivity and support sustainable tourism growth in Bulukumba Regency.
Co-Authors Abdullah, Sulaiman Achmad Aminudin Adisasmita, Sakti Adji Agung Tri, Agung Ahdiat F, Yoga Ali Djamhuri Andang Subaharianto Antoni, Bram Wira Aziz, Aminudin Basuki Winarno, Basuki Chuadinata, Steven Deni Nur Fauzi Erna Cahyawati Fakhrudi, yoga ahdiat Farid Majedi, Farid Fitriani, Elok Fredy Susanto Ghanesya Hari Murti Hairus Salikin Hat Pujiati Ikwan Setiawan Imaduddin, Ilmi Rizki Irana Astutiningsih Ishaq Destri, Ishaq Jamun, Marcelino Hendratmo Kamin, Yusi LAILY ROSDIANA Michael Padmanaba Miftahul Ulum Muhammad Hasan Basri NANANG ROMANDONI Naraswari, Sastya Nectaria Putri Pramesti, Nectaria Putri Nico, Jourdan Eden Nisrina, Nadia Meivitasari Putri Nur Ihda Farikhatin Nisa Pamungkas, Doni Setyo Parerung, Fretty Sumbung Qadriathi Dg Bau Risza Dewi Rahmawati Safi'i, Ali Santoso, Distania Silviana Selyandita, Silviana Supiastutik Supiastutik Veronika, Friska Wardana, Kelvin Dwi Wardani SWW, L. Dyah Purwita Wardani, L.D.P. Wicaksono, Darma Arif