Judul: Pembuatan Masterplan Kawasan Pusat Produksi Benih dan Induk Ikan Lokal di Desa Buko Poso, Way Serdang, Mesuji, Lampung
Abstrak: Kabupaten Mesuji terdapat banyak sungai, kanal, waduk, dan rawa-rawa yang bisa dimanfaatkan sebagai sarana pengembangan perikanan. Namun, tingkat produksi perikanannya masih mengandalkan dari hasil tangkapan sehingga dapat menurunkan ketersediaan dan populasi ikan. Tujuan penelitian ini adalah menyusun masterplan untuk pembangunan pusat produksi benih dan induk ikan lokal dengan memperhatikan kesesuaian lahan di Desa Buko Poso, Kecamatan Way Serdang, Kabupaten Mesuji, Provinsi Lampung. Kegiatan observasi lapang meliputi pengukuran kualitas air secara in situ dan ex situ pada empat stasiun pengamatan, pengambilan sampel tanah pada lima titik dengan tiga kedalaman berbeda, topografi lahan menggunakan drone, dan pemetaan batas lahan menggunakan GPS. Hasil analisis data pengujian tekstur tanah menggunakan segitiga tanah menunjukkan tanah bertekstur liat. Komoditas yang sesuai untuk dibudidayakan adalah baung, gabus, belida, jelawat, dan nila. Infrastruktur yang dapat dibangun adalah kolam filter tandon, IPAL, hatchery, bak pendederan, bak pemeliharaan induk, kolam pemijahan, dan infrastruktur pendukung lainnya., Kabupaten Mesuji has many rivers, canals, reservoirs, and swamps that can be utilized as facilities for the development of fisheries. However, the level of fish production still relies on catches, which can result in reducing the availability and population of fish. The objective of this research is to create a master plan for establishing a center for local fish seed and broodstock production, considering the land suitability in Buko Poso Village, Way Serdang Sub-district, Mesuji District, Lampung Province. Field observation activities include in-situ and ex-situ water quality measurements at four observation stations, soil sampling at five points with three. The results of the soil texture analysis using the soil triangle indicate clay-textured soil. The suitable species for cultivation include Asian Redtail Catfish, Striped Snakehead, Clown Knifefish, Hoven's Carp, and Nile Tilapia. Infrastructure that can be built includes filter tank ponds, wastewater treatment plants, hatcheries, nursery ponds, broodstock maintenance ponds, breeding ponds, and other supporting facilities.
Keyword: fish, mapping, masterplan, topography

Judul: Strategi Pengembangan Kawasan Perikanan Budidaya di Kabupaten Lampung Timur
Abstrak: Lampung Timur regency set to minapolitan area in 2010 as the implementation of the strategic plan of The Marine and Fisheries Affairs Ministry to make Indonesia as the largest producer of fishery products in the world in 2015. Planning aquaculture development strategy becomes important so that the existing fishery resources can be utilized optimally and efficiently. The objectives of this study are to identify the prime aquaculture commodities, to evaluate land suitability, mapping the direction of the aquaculture development and planning strategies for developing aquaculture in Lampung Timur regency. Margin value analysis results, productivity trends, harvested area trends, demand analysis and preference analysis shows that the seaweed and green mussel is the pre-eminent commodity in sea farming while vaname, tiger shrimp and milkfish is the pre-eminent commodity in brackish water aquaculture and tilapia, catfish and gurame is the pre-eminent comodities in freshwater aquaculture at Lampung Timur regency.. Land suitability analysis for sea farming activity in East Lampung regency explained that 50.71% of sea area have a very suitable criteria (S1), 23.53% suitable (S2), 24.26% less suitable (S3) and 1.5% are not suitable (N). land suitability analysis for brackish water aquaculture resulted of 14.14% have a very appropriate criteria (S1), 46.21% suitable (S2), 26.89% less suitable (S3) and 12.77% were not suitable (N). While land suitability for the fresh water aquaculture resulted only 0,05% has very suitable criteria (S1), suitable 72.45% (S1), 22.41% less suitable (S3) and 5,09% are not suitable (N). The development of sea farming is directed on marine areas along the coast of Lampung Timur Regency area of 38 871 ha, while for brackish water aquaculture development is directed at two districts namely Labuhan Maringgai and Pasir Sakti with vaname commodity area of 2 966 ha, black tiger shrimp covering 9 880 ha, milkfish area of 3 833 ha and 1 382 Ha of ponds located in coastal border is directed for fishforetry of milkfish or shrimp. Freshwater aquaculture development is directed at an area of 53 304 ha that spreading over 8 districts i.e. Bumi Agung, Batanghari, Sekampung, Raman Utara, Purbolinggo, Way Bungur, Way Jepara, and Jabung, with backyard fishpond pattern for the development of catfish aquaculture, serene ponds water for gurame and mina padi for tilapia development. While bamboo cages and floating cages developed for all three fishes. Alternative strategy that could be pursued are to improve the quality of knowledge-based human resources, improving institutional farmers, improving marketing institutions and improve the provision of facilities and infrastructure.
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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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