Judul: Evaluation of the Social Forestry Program in Protected Forest Areas: A Case Study of LMDH Bukit Amanah, Bandung Regency
Abstrak: Pelaksanaan program perhutanan sosial melalui skema kemitraan kehutanan (KK) di LMDH Bukit Amanah, kabupaten Bandung perlu dievaluasi untuk melihat bagaimana pengaruh program perhutanan sosial terhadap kelembagaan dan kondisi ekonomi petani di LMDH Bukit Amanah. Analisis kelembagaan dilakukan dengan membandingkan sistem kelembagaan di LMDH bukit Amanah dengan 5 prinsip Good forest good governance. Analisis kelayakan dilakukan dengan metode analisis finansial menggunakan 3 kriteria yaitu Net Present Value (NPV), Internal Rate of Return (IRR), dan Benefit Cost Ratio (BCR). Secara umum LMDH Bukit Amanah memiliki tata kelola hutan yang baik dilihat dari aspek-aspek dalam Good Forest Good Governence. Usaha agroforestri dan usaha Kopi Puntang Wangi di LMDH Bukit Amanah memiliki nilai NPV, BCR dan IRR yang memenuhi, sehingga usaha layak dijalankan. Rata-rata penghasilan petani anggota LMDH Bukit Amanah sebesar Rp3.945.621/bulan dengan kontribusi pendapatan Perhutanan Sosial sebesar Rp813.268/bulan atau setara dengan persentase sebesar 20,61% dari total pendapatan petani., The implementation of the social forestry program through the forestry partnership (KK) scheme at LMDH Bukit Amanah, Bandung Regency needs to be evaluated to see how the social forestry program affects the institutional and economic conditions of farmers at LMDH Bukit Amanah. Institutional analysis was carried out by comparing the institutional system at LMDH Bukit Amanah with the 5 principles of Good forest good governance. Feasibility analysis was carried out using the financial analysis method using 3 criteria, Net Present Value (NPV), Internal Rate of Return (IRR), and Benefit Cost Ratio (BCR). In general, LMDH Bukit Amanah has good forest governance in terms of aspects of Good Forest Good Governance. The agroforestry and Puntang Wangi coffee business at LMDH Bukit Amanah have sufficient NPV, BCR, and IRR values, so the business is feasible. The average income of farmers who are members of the Bukit Amanah LMDH is IDR 3,945,621/month with a Social Forestry income contribution of IDR 813,268/month or the equivalent of a percentage of 20.61% of the total farmers' income.
Keyword: Agroforestri, Analisis Finansial, LMDH, Pendapatan Petani, Tata Kelola Hutan

Judul: The Contribution of Social Forestry to the Income of Communities Around Forest Farmers in KPH Purwakarta
Abstrak: Berbagai permasalahan kehutanan yang terus terjadi di Indonesia menuntut perlunya solusi konkrit dalam mencegah degradasi dan deforestasi. Perhutanan Sosial hadir sebagi sebuah solusi untuk dapat menciptakan hutan yang lestari dan masyarakat yang sejahtera. Penelitian ini bertujuan menganalisis perkembangan program Perhutanan Sosial dan seberapa besar kontribusi yang diberikan terhadap pendapatan petani di wilayah KPH Purwakarta. Data dikumpulkan menggunakan metode wawancara kepada 40 orang petani yang tergabung dalam Lembaga Masyarakat Desa Hutan Bambu Jaya yang mendapatkan izin Perhutanan Sosial melalui Pengakuan dan Perlindungan Kemitraan Kehutanan (Kulin KK). Hasil penelitian menunjukkan bahwa kontribusi Perhutanan Sosial terhadap pendapatan rumah tangga petani LMDH Bambu Jaya yaitu sebesar 11,85%, hasil analisis faktor menunjukkan bahwa faktor yang memengaruhi pendapatan petani LMDH Bambu Jaya adalah luas lahan, dan tingkat kesejahteraan petani Perhutanan Sosial LMDH Bambu Jaya berada pada tingkat kesejahteraan sedang dan cukup hidup layak., Various forestry problems that continue to occur in Indonesia require the need for concrete solutions to prevent degradation and deforestation. Social Forestry is present as a solution to be able to create sustainable forests and prosperous communities. This study aims to analyze the development of the Social Forestry program and how much it contributes to the income of farmers in the KPH Purwakarta area. Data were collected using interviews with 40 farmers who are members of the Forest Village Community Institution (LMDH) Bambu Jaya who received a Social Forestry permit through the Recognition and Protection of the Forestry Partnership (Kulin KK). The results showed that the contribution of Social Forestry to the household income of LMDH Bambu Jaya farmers was 11,85%, the results of the factor analysis showed that the factors affecting the income of LMDH Bambu Jaya farmers were land area, and the level of welfare of LMDH Bambu Jaya Social Forestry farmers was at a moderate level of well-being and decent living.
Keyword: Sustainable forest, welfare, land area, farmer's income

Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave