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All Journal Indonesian Journal of Forestry Research Salimiya : Jurnal Studi Ilmu Keagamaan Islam Dinamika Sosial: Jurnal Pengabdian Masyarakat Dan Transformasi Kesejahteraan An Najah (Jurnal Pendidikan Islam dan Sosial Keagamaan)
Lailatul Khasanah
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Religion Agriculture, Biological Sciences & Forestry Humanities Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Social Sciences Other

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FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA Tatang Tiryana; Lailatul Khasanah; Priyanto Priyanto; Sri Rahaju; Muhdin Muhdin
Indonesian Journal of Forestry Research Vol 8, No 2 (2021): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2021.8.2.199-211

Abstract

Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and assess their prediction accuracy for estimating tree bole volumes of mahogany at community forests in Central Java. This study used 120 sample trees with diameters of 6–38 cm to formulate artificial and absolute form factors and to develop tree bole volume models. These form factors coupled with bole height and total height were used in simple volume equations. Regression analyses were used to develop volume models using the diameter and total height as predictors. The simple volume equations and volume models' prediction accuracy was evaluated using a cross-validation dataset and independent dataset (30 sample trees). The artificial form factor (0.68 ± 0.11) of mahogany, which was higher than the absolute form factor (0.46 ± 0.09), provided accurate estimates of tree bole volumes when it was used with the bole height instead of the total height. The volume model that uses diameter and total height produced the most accurate estimates, while the volume model that uses diameter alone provided the most practical yet reliable tool for estimating tree bole volumes of mahogany. The results of this study are useful for improving community forest management.
Peningkatan Hasil Belajar Matematika Melalui Model Pembelajaran Problem Based Learning (PBL) Siswa Kelas I SD Negeri Lowokwaru 3 Malang Lailatul Khasanah
Salimiya: Jurnal Studi Ilmu Keagamaan Islam Vol 4 No 2 (2023): Salimiya
Publisher : Lembaga Penelitian, Penerbitan dan Pengabdian kepada Masyarakat (LP3M) IAIFA Kediri

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Abstract

This research aims to describtion how the implementation of the Problem Based Learning (PBL) teaching model can improve the learning outcomes of first-grade students in mathematics at an elementary school. The method used in this research is Classroom Action Research (CAR). The average mathematics learning scores of the students were observed, starting from the pre-cycle exam where the average score was 58.6%, with 43.47% or 10 students scoring below the Minimum Mastery Criteria (KKM). After the first cycle, it was observed that the average score of the students increased to 66.8%, with 73.9% of the students achieving the KKM and 26.09% or 6 students scoring below the KKM or not yet achieving it. After the second cycle, the average score of the students further increased to 78.73%, with 91.29% or 21 students achieving the KKM, and 8.70% or 2 students scoring below the KKM or not yet achieving it in mathematics. Based on these results, it can be concluded that the implementation of the Problem Based Learning (PBL) teaching model can improve the learning outcomes of first-grade students at SDN Lowokwaru 3 Malang.
Memperkuat Perekonomian Desa Melalui Budidaya Tembakau Di Desa Tejorejo Kabupaten Kendal Muhammad Ilham Akbar; Selvia Kurniawati; Iffah Nur Hakim; Lailatul Khasanah; Muhammad Alfandi; Eka Fitriyani; Ana Madinatul Ulum
Dinamika Sosial : Jurnal Pengabdian Masyarakat dan Transformasi Kesejahteraan Vol. 1 No. 3 (2024): September : Dinamika Sosial : Jurnal Pengabdian Masyarakat dan Transformasi Kes
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/dinsos.v1i3.491

Abstract

Tobacco cultivation in Tejorejo Village is one of the community's main efforts to improve the village economy. This research uses a qualitative descriptive approach to analyze the challenges faced in tobacco cultivation and their impact on the economy of local communities. The challenges found include technical limitations due to climate change which affects the quality and quantity of harvests. Apart from that, fluctuations in tobacco prices on the market which are influenced by external factors such as government policy and global economic conditions also increase the instability of farmers' income. However, tobacco cultivation has a positive impact in encouraging village infrastructure development and attracting investment. Although progress in the tobacco farming sector can encourage rural infrastructure development and attract investment, over-reliance on tobacco as the sole source of income carries major risks, including economic uncertainty and the potential for crop failure which can impact the village economy as a whole.
PENGARUH MODEL PEMBELAJARAN LOGAN AVENUE PROBLEM SOLVING (LAPS)-HEURISTIK TERHADAP HASIL BELAJAR SISWA KELAS III SDN 1 SUMBERREJO Nuryanto, S.Ag, M.Pd; Lailatul Khasanah
An Najah (Jurnal Pendidikan Islam dan Sosial Keagamaan) Vol. 4 No. 6: November 2025
Publisher : Najah Bestari

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Abstract

Pendidikan sangat penting bagi penyiapan anak-anak untuk menghadapi kehidupannya di masa mendatang. Pendidikan adalah suatu usaha yang dilakukan dengan sadar oleh keluarga, masyarakat atau pemerintah, melalui bimbingan, pengajaran, pembelajaran dan pelatihan yang berlangsung. Pendidikan matematika di sekolah dasar bertujuan membekali mereka dengan kemampuan berpikir logis, analitis, sistematis, kritis, dan kreatif serta kemampuan bekerja sama. Penelitian ini dilatarbelakangi dari permasalahan hasil belajar siswa yang rendah, siswa kurang aktif dan kurang fokus saat pembelajaran. Tujuan penelitian ini adalah untuk mengetahui apakah ada pengaruh penggunaan model pembelajaran logan avenue problem solving LAPS Heuristik terhadap hasil belajar siswa kelas III SD Negeri 1 Sumberrejo. Jenis penelitian yang digunakan dalam penelitian ini adalah jenis penelitian eksperimen yang digunakan yaitu Pre-Eksperimen Design. populasi dalam penelitian ini adalah seluruh siswa kelas III yang berjumlah 25 siswa. Metode pengumpulan data dilakukan melalui tes, observasi dan dokumentasi. Penelitian ini dilaksanakan 5 kali pertemuan. Analisis data menggunakan pengujian hipotesis menggunakan uji wilxocon. Berdasarkan hasil analisis dan pembahasan menunjukan Wtabel = 89 > Whitung = 6,5 sehingga H0 ditolak dan H1 diterima. Hal ini menunjukan bahwa penggunaan model pembelajaran logan avenue problem solving LAPS Heuristik efektif dalam meningkatkan hasil belajar siswa pada materi penyajian data dalam tabel kelas III SDN 1 Sumberrejo
Co-Authors Ana Madinatul Ulum Eka Fitriyani Faridatul Latifah Iffah Nur Hakim Miftahul Shofiyatul Ulya Much Machfud Arif Muhammad Alfandi Muhammad Ilham Akbar Muhdin Muhdin Nuryanto, S.Ag, M.Pd Priyanto Rahaju, Sri Selvia Kurniawati Tatang Tiryana