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All Journal Jurnal Proyek Teknik Sipil Geosfera: Jurnal Penelitian Geografi Jurnal Informasi, Teknologi, Engineering, dan Sains INDOPEDIA (Inovasi Pembelajaran dan Pendidikan)
Wahyudi, Riski
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Peningkatan Kapasitas Jalan Dengan Melihat Penurunan Parameter Data LHR dan VCR Akibat Covid-19: Studi kasus: Ruas Tanjung Kemuning – Linau dari Desa Kasuk Baru (STA 208+305) Sampai Dengan Desa Sedaya Baru (STA 218+500) Wahyudi, Riski
JOURNAL INFORMATION TECHNOLOGY ENGINEERING AND SCIENCE Vol 1 No 2 (2022)
Publisher : Universitas Tangerang Raya

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Abstract

Kaur Regency in Bengkulu Province which has the capital city in Bintuhan by looking at the level of population and economic development, currently the capacity of the main road in the center of the district capital with the status of a national road is already less able to accomodating the capacity of the existing traffic rate. For this reason, it is necessary to improve the road structure through road widening. However, data support as a reference in road widening such as LHR and VCR show a decrease due to the Covid-19 force majeure from 2019 to 2022. So it is necessary to do an analysis because the road conditions are returning to normal which shows the volume of heavy traffic as an indication of the need improvement of the road structure.
ANALISIS KELAYAKAN INVESTASI JALAN TOL AKIBAT RESIKO KETERLAMBATAN PROYEK DAN KESALAHAN PREDIKSI LALU LINTAS (Studi Kasus: Jalan Tol Pejagan Pemalang) Wahyudi, Riski; Nahdalina, Nahdalina
Jurnal Proyek Teknik Sipil Vol 2, No 2 (2019): September
Publisher : Civil Infrastructure Engineering and Architectural Design

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.82 KB) | DOI: 10.14710/potensi.2019.5316

Abstract

Demand uncertainty and traffic forcase  uncertainty can lead to inaccuracies in the estimation of the revenues which are supposed to cover construction, operation and maintenance of toll roads. In addition, the delay in construction projects results an increase in the planned execution time of the project and increased in construction costs. This study focuses on the effect of project delays and the risk of traffic prediction in toll road project investments. The basis of this research is find out impact of the risks in project to feasibility analysis, so that the changes in the value of the investment feasibility indicator in bisnis plan can be obtained.  This study carried out using several technical economic methods to obtain the value of the investment feasibility indicator such as NPV, IRR, BCR and WACC. Pantura is the only one road which people use to move from Pejagan to Semarang. Therefore, an alternative road is needed to break traffic such as Pejagan-Pemalang Toll Road. Obtain from the calculation results, there are 4 risk comparison methods : analisis investmen according to business plan, project 2 years delay with business plan traffic, project on time with existing traffic after toll road operation and project 2 years delay with excisting traffic. The value of NPV, IRR and BCR after 2 years project delay with existing traffic  are Rp6,541,793,515,548,  9.1%, 1.239 and 8,5%. After comparison, the risk of construction delay affects significant changes in IRR and BCR, while the error traffic prediction results in a large NPV change, and the error in traffic assumption is the most influential risk for finance in the Pejagan Pemalang toll road construction project.
PENGEMBANGAN MEDIA PEMBELAJARAN AUDIO-VISUAL MATERI SISTEM PEREDARAN DARAH MANUSIA TERINTEGRASI AYAT AL¬¬¬¬¬¬-QURAN Wahyudi, Riski; Hikamah, Siti Roudlotul; Sudiarti, Diah
INDOPEDIA (Jurnal Inovasi Pembelajaran dan Pendidikan) Vol. 3 No. 1 (2025): MARET 2025
Publisher : Media Inovasi Pendidikan dan Pembelajaran

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Abstract

Media audio visual merupakan media cetak berbasis visual yang berfungsi menyajikan materi pembelajaran dalam bentuk audio dan gambar dengan ukuran cukup besar yang digantung pada suatu penyangga dengan konten didalamnya dapat berupa audio, gambar, dan teks sesuai dengan materi yang akan disampaikan. Tujuan penelitian ini untuk mengidentifikasi perbedaan dan kesamaan dari hasil penelitian sebelumnya, sehingga dapat menghasilkan kekurangan dan kelebihan dari hasil penelitian sebelumnya.  Penelitian merupakan penelitian Research and Develoment (R&D), menggunakan metode PLOMP yang terdiri dari tiga tahapan yaitu: 1) Analisis; 2) Desain dan pengembangan prototipe; dan 3) Evaluasi. Data yang diperoleh menggunakan data kuantitatif yang berasal dari lembar validasi dan angket kepraktisan serta data kualitatif yang berupa komentar atau saran. Sumber data dalam penelitian ini yaitu validator ahli materi dan ahli media, guru dan 6 peserta didik. Berdasarkan hasil uji kevalidan dengan presentase rata-rata hasil validasi materi sebesar 80% dengan kategori valid dan presentase rata-rata validasi media 82,5% kategori valid. Hasil uji kepraktisan kepada respon guru dengan presentase rata-rata 90,22% kategori sangat praktis dan presentase rata-rata respon siswa 94,44% kategori sangat praktis dan valid.rdasarkan hasil validasi diatas bahwa audio visual sangat praktis dan dapat digunakan. Hal ini menunjukkan bahwa audio visual yang dikembangkan sangat praktis dan dapat diterapkan pada proses pembelajaran IPA di jenjang MTs.
Pemodelan 3D Perubahan Coulomb Stress Pasca-Gempa Seram Pada 5 Mei 2024 Dengan Magnitudo 6.1Mw Wahyudi, Riski; Auliya, Laila; Nugraha, Purwaditya; Prasetyo, Nugroho; Styawan, Yudha
Geosfera: Jurnal Penelitian Geografi Vol 4, No 2 (2025): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v4i2.34961

Abstract

This study aims to analyze Coulomb stress changes following the Mw 6.1 earthquake in Seram on May 5, 2024, in order to identify potential subsequent seismic hazards. The methodology employed numerical modeling using Coulomb 3.4 to calculate stress distribution, which was then visualized through spatial interpolation in both 2D maps and 3D cross-sections. The 2D modeling results reveal zones of significant stress increase that spatially correlate with the locations of major earthquakes in 1993 and 1998. The 3D analysis further indicates stress concentration at shallow to intermediate depths (0–12 km), consistent with the distribution of recorded aftershocks, thereby validating the reliability of the model. Additionally, stress transfer was detected toward surrounding faults, particularly the Seram strike-slip segment and the Bobot fault segment. In conclusion, this research demonstrates that Coulomb stress modeling provides a quantitative framework for assessing post-seismic stress evolution and constitutes a crucial basis for disaster mitigation efforts in the tectonically complex Maluku region.
Co-Authors Auliya, Laila Diah Sudiarti Hikamah, Siti Roudlotul Nahdalina Nahdalina Nugraha, Purwaditya Prasetyo, Nugroho Styawan, Yudha