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Potensi Limbah Penebangan dan Pola Bentuk Penampang Tunggak Pohon pada Kegiatan Pemanenan Kayu di Hutan Alam Produksi Kalimantan Tengah: The Potential of Logging Waste and the Cross-Sectional Shape Patterns of Tree Stumps in Timber Harvesting Activities in Production Forests in Central Kalimantan Imanuel, Ricky Tri; Junaedi, Ajun; Yosep, Yosep; Dwiastuti, Rini; Yanciluk, Yanciluk; Rizal, Moh
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23189

Abstract

The objectives of this study were (a) to calculate the volume, percentage, and potential of tree felling waste; and (b) to identify the cross-sectional patterns of tree stumps in timber harvesting activities in the production forests of Central Kalimantan. Measurements of logging waste and observations of tree stump cross-sectional shapes were carried out on 60 predetermined sample trees located within 10 observation plots (10 ha). The results showed that the volume of logging waste was 106.42 m3 or 31.82% with a waste potential of 10.64 m3/ha. The patterns of stump cross-sections found in the logging plots consisted of several shapes, namely: star-shaped, triangular, round, irregular round, and square.
Analisis Faktor-Faktor Yang Mempengaruhi Minat Beli Sepeda Listrik Terhadap Masyarakat Kraksaan Hamzah, Moh; Junaidi, Ahmad; Fattah, Abdul; Bayu, Septian; Rizal, Moh; Ubaidillah, Ubaidillah
New Economy Vol. 1 No. 1 (2025)
Publisher : CV. Akira Java Bulu

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

Abstract

Technological developments are increasingly sophisticated. Likewise, sophistication is developing in vehicle parts. What were originally fuel-powered vehicles have now been modernized with electric vehicles that only rely on electricity as a charger. Therefore, researchers aim to find out the factors that influence the interest in buying electric bicycles among the people of Paiton. This research uses quantitative methods. The population in this research is the Paiton community who own electric bicycles. In this research, the sampling method used is the simple random sampling method. The simple random sampling method (Simple Random Sampling) is a sampling technique that is completely based on providing equal opportunities to the entire population (Bambang Sugeng, 2022). This research uses the Lemeshow formula, because the sample population is unknown. This research used a sample of 96 respondents. In accordance with calculations using the Lemeshow formula. The data analysis technique used is multiple linear regression analysis with the help of SPSS software. The research results show that taste, price and income do not influence people's interest in buying electric bicycles.