Judul: Resilience of Farmer Household Livelihoods  Around the Forest in RPH Kaliacar, KPH Probolinggo
Abstrak: Izin Pemanfaatan Hutan Perhutanan Sosial (IPHPS) merupakan skema pengelolaan hutan yang dilakukan untuk mengentaskan kemiskinan, menciptakan lapangan kerja baru, dan memperbaiki kualitas pertumbuhan antar pelaku ekonomi. Penelitian ini mengkaji resiliensi penghidupan rumah tangga petani sekitar hutan yang dikelola dengan skema IPHPS di Desa Kaliacar yang perekonomiannya tergolong menengah ke bawah. Penelitian ini bertujuan untuk menganalisis pemanfaatan aset penghidupan dan strategi nafkah oleh rumah tangga dan pengaruhnya terhadap resiliensi penghidupan rumah tangga petani sekitar hutan di RPH Kaliacar. Melalui pendekatan kuantitatif dengan kuesioner dan kualitatif melalui wawancara mendalam, pengukuran resiliensi menggunakan the Connor-Davidson Resilience Scale dengan menggunakan uji korelasi Rank Spearman dan analisis deskriptif. Lahan IPHPS menyebabkan peningkatan ekonomi rumah tangga petani pada saat tanaman tahunan dipanen. Resiliensi penghidupan berhubungan sangat kuat dengan strategi nafkah yang dilakukan. Pilihan strategi nafkah masyarakat sudah tepat dan berkorelasi baik terhadap resiliensi penghidupan., The Social Forestry Utilization Permit (IPHPS) is a forest management scheme to alleviate poverty, create new jobs, and improve the quality of growth among economic actors. This study examines the livelihood resilience of farmer households around forests managed by the IPHPS scheme in Kaliacar Village, whose economy is classified as middle to lower. This study aimed to analyze households' utilization of livelihood assets and income strategies and their impact on the livelihood resilience of farmer households around the forest in RPH Kaliacar. Through a quantitative approach with questionnaires and qualitative through indepth interviews, resilience measurement used the Connor Davidson Resilience Scale using the Rank Spearman correlation test and descriptive analysis. IPHPS land causes an increase in the economy of farmer households when annual crops are harvested. Livelihood resilience is very strongly related to the livelihood strategy undertaken. The community's choice of livelihood strategy is appropriate and has a good correlation with livelihood resilience.
Keyword: aset penghidupan, resiliensi, rumah tangga petani, strategi nafkah, farmer households, livelihood assets, livelihood strategies, resilience

Judul: The Impact of Social Forestry Forest Utilization Permits on The Economy of Farmer Households (Case Study: Seasonal Plant Farmers in IPHPS Land Simpur Village, Belik District, Pemalang Regency)
Abstrak: Izin Pemanfaatan Hutan Perhutanan Sosial (IPHPS) merupakan program Kementerian Pertanian dan Kementerian Lingkungan Hidup dan Kehutanan yang dilakukan untuk mengatasi masalah penggunaan lahan pertanian di lahan hutan tanpa menanam tanaman pokok hutan. IPHPS diberikan diberbagai wilayah di Indonesia salah satunya Kabupaten Pemalang. Kabupaten Pemalang merupakan wilayah penerima IPHPS terbanyak di Jawa Tengah, salah satunya di kawasan perhutanan sosial di Desa Simpur. IPHPS bertujuan untuk meningkatkan ketahanan pangan dan diharapkan dapat meningkatkan kesejahteraan masyarakat yang tinggal di sekitar hutan. Tujuan dari penelitian ini adalah: (1) mendeskripsikan karakteristik rumahtangga petani pengelola lahan IPHPS di Desa Simpur, Kecamatan Belik, Kabupaten Pemalang, (2) menganalisis faktor-faktor yang memengaruhi rumahtangga petani pengelola lahan IPHPS, (3) menganalisis dampak IPHPS terhadap ekonomi rumahtangga petani. Metode analisis data menggunakan metode Two Stage Least Square (2SLS). Hasil penelitian menunjukkan bahwa lahan IPHPS menyebabkan peningkatan ekonomi rumahtangga petani ketika tanaman tahunan dipanen yang terlihat dari peningkatan pendapatan total rumahtangga dan pengeluaran total rumahtangga petani pengelola lahan IPHPS. Usahatani jagung dan usahatani singkong dapat memberikan pendapatan petani sebelum adanya tanaman tahunan., The Social Forestry Forest Utilization Permit (IPHPS) is a program of the Ministry of Agriculture and the Ministry of Environment and Forestry carried out to overcome the problem of using agricultural land on forest land without planting forest staple crops. IPHPS is given in various regions in Indonesia, one of them is Pemalang Regency. Pemalang Regency is the area that receives the most IPHPS in Central Java, one of them is in the social forestry area in Simpur Village. IPHPS aims to improve food security and expected to improve the welfare of people living around forests. The aim of this research is: (1) describe the characteristics of farmer households managing IPHPS land in Simpur, Belik District, Pemalang Regency, (2) analyze the factors that influence farmer households to manage IPHPS land, (3) analyze the impact of IPHPS on the economy of farmer households. The data analysis method used Two Stage Least Square (2SLS) method. The results of the study shows that IPHPS land causes an increase in the economy of farmer households when annual plant are harvested, as can be seen from the increase in total household income and total expediture of farmer households managing IPHPS land. Corn farming and cassava farming planted by land managers can provide farmers with income before the annual palnt is harvested.
Keyword: 2SLS, curahan kerja, kesejahteraan masyarakat, ketahanan pangan, tanaman tahunan, 2 SLS, annual plant, work flow, community welfare, food security

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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