Judul: Strategi Pengelolaan Agroforestri Berbasis Aren Di Pulau Bacan, Kabupaten Halmahera Selatan
Abstrak: Agroforestri merupakan sebuah sistem pengelolaan lahan yang mengkombinasikan produksi pertanian, peternakan dengan tanaman kehutanan. Sistem penggunaan lahan agroforestri di Propinsi Maluku Utara mencampurkan banyak jenis tanaman dengan aren (Arenga pinnata Merr) sebagai tanaman utama. Salah satu sentra agroforestri berbasis aren adalah Kabupaten Halmahera Selatan. Penelitian ini bertujuan untuk mengidentifikasi bentuk pengelolaan agroforestri berbasis aren, menghitung kontribusi agroforestri terhadap pendapatan rumah tangga dan menyusun strategi untuk pengembangan agroforestri berbasis aren di Kabupaten Halmahera Selatan. Penelitian dilaksanakan di Desa Kampung Makian, Kecamatan Bacan Selatan, Kabupaten Halmahera Selatan pada bulan Januari sampai Maret 2015. Data dikumpulkan melalui wawancara, observasi dan inventarisasi tanaman yang diusahakan petani. Analisis data menggunakan analisis deskriptif, analisis pendapatan rumah tangga, analisis SWOT (strengths, weakness, opportunity dan threats) dan analisis QSPM (Quantitative Strategic Planning Matrix). Hasil penelitian menunjukkan bahwa pengelolaan agroforestri memiliki kontribusi tinggi terhadap pendapatan rumah tangga mencapai 97.40% – 99.85%. Perhitungan skor matrik EFAS dan IFAS pengelolaan agroforestri berbasis aren Desa Kampung Makian, Kecamatan Bacan Selatan berada pada posisi kuadran II (0.12 ; –0.68). Pengelolaan agroforestri aren pada prinsipnya dapat dikembangkan, dengan memanfaatkan kekuatan dari faktor internal untuk menghindari ancaman–ancaman dari faktor eksternal. Strategi prioritas yang dipilih dalam peneltian ini sebagai berikut: (1) sosialisasi kesadaran lingkungan dan pemahaman tentang manfaat agroforestri, (2) membentuk dan mengembangkan pola agroforestri dengan penerapan teknologi untuk peningkatan produktifitas lahan yang dikelola petani, (3) mempertahankan dan melakukan peningkatan kualitas produk, (4) membentuk dan memperkuat kelompok tani sehingga mampu melakukan seluruh aspek pengelolaan agroforestri seperti pembibitan, penanaman, pemeliharaan, pemanenan, pengolahan dan pemasaran secara baik, dan (5) membuka dan mempermudah akses pasar sebesar–besarnya untuk untuk petani dapat lebih luas dalam memasarkan hasil kebun yang dikelolanya.
Keyword: agroforestri, keragaman, potensi, strategi, tabungan

Judul: Kajian pemanfaatan dan pengembangan sumberdaya pulau kecil di Kabupaten Halmahera Selatan
Abstrak: his research is executed from Februari until April 2004 in South Halmahera arch Regency, Research Target is to ; (I) Studying Exploiting Resources Isle pass through Determination Condition and Potency of According To the Exploiting Resources Isle Allotment, (2) Striving Subdistrict and countryside Development in South Halmahera arch Regency region, (3) Determining Regional Development policy direction of Coastal area in South Halmahera arch Regency. According To exploiting Allotment Resources of Coastal area in South Halmahera arch Regency analysed with Analysis Spasial with method Overlay. Analyse centers Bases activity (pre-eminent.) conducted by using method Location Quotient Analisys (LQ), Analyse Excellence Kompetitif conducted by using method Shift Share Analisys, Analyse countryside development conducted by using method Principle Component Analisys and also Analyse Group (Cluster Analisys). Result obtained is; according to Farm KJA Allotment in Bacan East, B. West, and Kayoa, allotment cultivation Pearl in]Subdistrict Bacan East, Coastal Tourism Allotment in 6 subdistrict in Regency region Halmahera of South arch of except Bacan and Bacan West East, while Fisherman Settlement Allotment in meeting Subdistrict Bacan, Concentration Sekot Bases in Agricultural Sector met at Subdistrict Bacan and Gane East from type tubers, while for subdistrict Kayoa met by type Jambu mete, and nutmeg in Paling Island subdistrict, whereas fishery sector met in subdistrict Gane West namely the fish laying type. excellence Kompetitif of each dross look seen by where at subdistrict Bacan West, Bacan East, and Bacan show good economics growth at the same time with farm exploiting competition height of tubers. Where high competition enough at arrest activity in subdistrict Kayoa, Gane East, Gane West Paling Island and happened by degradation haul. At appliance exploiting catch good enough at subdistrict Kayoa of whereas 8 subdistrict in region Halmahera of South arch of showed of the happening of very drastic degradation. Dati of Result of Analisistiponomi countryside is fisherman of where sill tendency to the sea being based on society. Result of group Analysis in discovering 2 countryside group that is; there is and also the countryside group which is relative left behind and insulated. Conclusion obtained by that is countryside in region Halmahera ofSouth arch enable for the coastal allotment, and settlement fisherment; Small Exploiting Pulai not yet optimal so that development of fishery sector relative minimize, discovered by the optimal group so that development of fishery sector relative minimize, discovered by the new countryside group expand and the countryside which isrelative left behind and insulated.
Keyword: kesesuaian lahan, potensi wolayah, tingkat kecamatan, tingkat desa

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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