Judul: Pengaruh Perlakuan Inovasi Penyadapan Getah Pinus terhadap Produktivitas Penyadap (Kasus : Hutan Pendidikan Gunung Walat, Kabupaten Sukabumi, Provinsi Jawa Barat).
Abstrak: Pine resin is one of non timber forest products that utilized in Indonesia. The demand of pine resin in Indonesian industry has been increased every year. Therefore, the need for an effort to increased the productivity of pine resin. Gunung Walat Educational Forest (GWEF) is one of educational forest that producing pine resin in Indonesia. Amount of pine resin production in diHPGW increased every year, so needs to be reviewed of tapping treatment that can be incresed the tappers productivity. Respondent taken by cencus method with the number of respondents are 25 people. The respondents is selected from tapper of pine resin that still active in tapping of pine resin in HPGW. Processing of data was done by descriptive and presentation of data are carried out by tabulating and graphing. The result of lead is made by monthly lead cumulative and sorted based on time of use tapping treatment. The tapping treatment are used that working motivation, employment contract, wage rates and results of research. Based on this research showed that treatment that give more effect to increase the leads of pine resin in HPGW are working motivation and results of research. Increase the leads of pine resin because working motivation treatment is 317 kg/month. This is due to the span time that used is longer and the working motivation treatment are tapper’s favourite. The tapper’s perception to tapping treatment that most to increase the leads of pine resin is results of research as 36,8%. Because of short period that used, can make leads of pine resin higher as 203,97 kg/month. Moreover, applicate the result of research didn’t have negative impact so tapper very liked it.
Keyword: 

Judul: Factors Affecting the Productivity  of Pine Resin Tappers in KPH Sukabumi, West Java Province
Abstrak: Peningkatan produksi getah pinus bergantung terhadap produktivitas tenaga kerja penyadap. Faktor-faktor yang mempengaruhi produktivitas kerja penyadap antara lain adalah umur, jumlah anggota keluarga, jam kerja, insentif upah dan jumlah pohon pangkuan. Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi produktivitas penyadap getah pinus di KPH Sukabumi. Penelitian dilakukan dengan metode analisis kuantitatif dengan wawancara terstruktur menggunakan bantuan kuesioner. Analisis data dilakukan dengan metode regresi linier berganda. Penentuan sampel dilakukan dengan metode purposive sampling dengan jumlah sampel yang ditentukan berjumlah 60 sampel. Hasil penelitian menunjukkan bahwa jumlah tanggungan keluarga, intensitas waktu penyadap, dan insentif pendapatan penyadap berpengaruh nyata terhadap produktivitas penyadap dengan nilai R square sebesar 98,93%. Sementara usia dan jumlah pohon pangkuan tidak berpengaruh nyata terhadap produktivitas penyadap. Faktor usia berbanding terbalik dengan produktivitas yang berarti semakin tinggi usia, maka tingkat produktivitasnya semakin menurun. Sementara faktor lain yang dianalisis berbading lurus dengan tingkat produktivitasnya., The increase in pine resin production depends on the productivity of tappers. The factors that affect the productivity of tappers include age, number of family members, working hours, wage incentives, and the load of trees that must be tapped. This study aims to analyze the factors that affect the productivity of pine resin tappers in KPH Sukabumi. The research was conducted using quantitative analysis methods with interviews using questionnaire. Sampling was determined using the purposive sampling with number of samples was 60 samples. Data analysis using multiple linear regression methods. The results showed that the number of family dependents, working hours, and the wage incentives had a significant effect on the productivity of tappers with an R Square value of 98.49%. Meanwhile, the age and load of trees that must be tapped had no significant effect on the productivity of tappers. The age factor is inversely proportional to productivity, meaning that the higher the age, the lower the productivity level. While other factors analyzed are directly proportional to the level of productivity.
Keyword: getah pinus, insentif pendapatan, penyadap, produktivitas

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.
Keyword: