Judul: Implementation Of Traditional Cultivation of Pohpohan Leaves  (Pilea melastomoides (Poir.) Wedd) Conservation Partnership Scheme in Mount Halimun  Salak National Park
Abstrak: Salah satu Kelompok Tani Hutan (KTH) yang berada di Desa Tamansari telah memperoleh akses budidaya pohpohan dengan skema kemitraan konservasi. Masyarakat telah melakukan budidaya pemanfaatan pohpohan di dalam kawasan secara turun temurun untuk mencukupi kebutuhan hidupnya. Tujuan penelitian adalah menganalisis mekanisme Kelompok Tani Hutan (KTH) dalam memperoleh akses budidaya pohpohan dalam zona tradisional Taman Nasional Gunung Halimun Salak TNGHS dan implementasi perjanjian kerja sama yang dijalankan. Metode yang digunakan yaitu studi pustaka, observasi lapang, dan wawancara. Hasil wawancara dianalisis menggunakan analisis kesesuaian supply demand dan IPA yang dimodifikasi. Berdasarkan hasil analisis tingkat kesesuaian supply demand, implementasi kegiatan budidaya pohpohan sudah sesuai dengan yang tertulis dalam perjanjian kerja sama. Tidak ada keluhan dari pihak KTH sebagai demand kepada pihak Balai TNGHS sebagai supply. Mayoritas variable berada dalam kuadran II, yang berarti kedua belah pihak sudah melaksanakan kontrak perjanjian dengan baik. Dengan demikian, rekomendasi kepada pihak manajemen TNGHS adalah mempertahankan dan/atau meningkatkan kinerja Kemitraan Budidaya Daun Pohpohan di Zona Pemanfaatan Tradisional TNGHS, One of the forestry farm group (KTH) in the Tamansari village has gained access to pohpohan agricultural with a scheme of conservation partnerships. Communities have been raising pohpohan's use in the region for generations to provide the necessities of life. The purpose of research is to analyze KTH mechanisms in obtaining access to pohpohan farming in the traditional zone in Mount Halimun Salak National Park (TNGHS) and implementation of the cooperation agreement. The methods used were literature studies, broad observations, and interviews. Analysis of the interviews using supply-demand based on modified IPA (Importance Performance Analysis). Based on the supply-demand compliance analysis, the implementation of the pohpohan implementation will be consistent with the statement made in the document. As to whether there is no complaint from cooperation agreement as a demand to the TNGHS hall as a supply. The majority of the variables are in quadrant II, which means both sides have implemented good covenant contracts. Therefore, the recommendation for the Management of TNGHS is to maintain and/or improve the performance in conservation partnership of Traditional Cultivation of Pohpohan Leaves at traditional use zone of TNGHS
Keyword: conservation partnership, cooperation agreement, pohpohan

Judul: Ecosystem Restoration Partnership in Mount Halimun Salak National Park's Rehabilitaion Zone
Abstrak: Desa Malasari menjadi tempat pemulihan ekosistem pada Zona Rehabilitasi TNGHS yang melibatkan partisipasi KTH Konservasi “Malasari Lestari”. Penelitian dilakukan untuk mendapatkan pengetahuan tentang efektivitas dan efisiensi implementasi Perjanjian Kerja Sama (PKS). Nomor PKS. 1817/T .14/TU/KUM/10/2020 dan Nomor: PKS.1/KTHK/X/2020 tentang Penguatan fungsi Melalui Kemitraan Konservasi dalam Rangka Pemulihan Ekosistem pada Zona Rehabilitasi di Seksi Pengelolaan Taman Nasional Gunung Halimun Salak. Tujuan khusus untuk menganalisis penyelenggaraan kemitraan konservasi, menganalisis mekanisme KTH “Malasari Lestari” dalam memperoleh PKS, dan menganalisis implementasi PKS. Penelitian pada bulan AgustusSeptember 2021 di areal kerja sama PKS. Analisis metode kuantitatif melibatkan analisis frekuensi, analisis tingkat kesesuaian penilaian, dan metode analisis kinerja kemitraan dengan IPA (Importance Performance Analysis). Kinerja kemitraan konservasi antara Balai TNGHS dengan KTH “Konservasi Malasari Lestari” terdapat beberapa aspek dan variabel yang memuaskan diantara kedua belah pihak serta beberapa aspek dan variabel butuh perhatian kembali., Malasari Village is a TNGHS Rehabilitation Zone ecosystem restoration site where KTH Conservation's "Malasari Lestari" participates. This research is to learn more about the effectiveness and efficiency with which the Cooperation Agreement (PKS) is being implemented. The objectives of PKS Numbers 1817/T.14/TU/KUM/10/2020 and PKS Numbers PKS.1/KTHK/X/2020 are to strengthen conservation partnerships' conservation functions in the context of ecosystem restoration in the rehabilitation zone with the Management Section of TNGHS. Examining the implementation of conservation partnerships, analyzing the mechanism of the Malasari Lestari Conservation Forest Farmers Group in getting PKS, and analyzing the performance of PKS. The research took place in August– September 2021 in Cooperation Agreement (PKS). The analysis includesfrequency, assessment level, and IPA partnership performance analysis. The conservation partnership between the TNGHS Office and KTH "Malasari Lestari Conservation" has some satisfying aspects and some variables that need improvement.
Keyword: KTH, Malasari Village, PKS, rehabilitation zone

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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