Judul: Arahan pengembangan perikanan tangkap di Rawa Lebak Kabupaten Hulu Sungai Utara Kalimantan Selatan
Abstrak: The declining trend of catch fishery production and increasing demand for fishery products, requires efforts to increase production by taking into account aspects of sustainable living. Hulu Sungai Utara Regency has a swamp land reached 63% of the potential total area that can developed for marsh fishing activities. The purpose of this study are: (1) to identify areas of fishery activities on the basis of comparative advantage, (2) to identify the causes of decline in fishery production, (3) to identify the fishery reserves to sustain fishing activities, (4) to identify the perceptions of stakeholders about the direction of the development potential nontidal swamps fishery, and (5) to formulate strategies and policy priorities as the development direction of nontidal swamps fishing potential in Hulu Sungai Utara Regency. The data analysis were used descriptive analysis, analysis of the technical criteria of fishery reserves, spatial analysis, Location Quotient (LQ), Analytical Hierarchy Process (AHP) and SWOT analysis. The results showed that the basis of fishing activities based on comparative advantage is Danau Panggang district, Sungai Pandan district, Amuntai Selatan district, Amuntai Utara district dan Sungai Tabukan district. Decline in fish production due to low utilization of the potential of fishery resources. The fishery reserves located in sub district Tampakang, Pal Batu, Pandamaan, Baru, Pajukungan Hilir, Sungai Dalam, Teluk Limbung, Sungai Durait Hilir, Sungai Durait Tengah, Danau Cermin, Pulau Tambak dan Banyu Hirang. The perception of stakeholders on the nontidal swamps fishery management’s is the priority of physical factors followed by social and institutional factors and the recent economic factors. Based on the SWOT analysis, the recommended policy priorities to be implemented is the use of natural resources, fish resources, human resources, facilities and infrastructure, market potential and capital to increase production and profits. The fishery area which can be exploited area 24.790 hectares scattered throughout the district, while the fishery reserves covering 1.775,6 hectares.
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Judul: Pengembangan Perikanan Tangkap Berbasis Komoditas Unggulan di Kabupaten Halmahera Utara
Abstrak: North Halmahera Regency with its sea area of 19536.02 km2 (78%) has the potential of fish resources (standing stock) accounting for 664,382.48 tons with sustainable potential fish production (the Maximum Sustainable Yield / MSY) of 347,191 tons per year, i.e., 211,590 tons of pelagic fish and 135,005 tons of demersal per year. The problem in the development of capture fish in North Halmahera is that its excellent commodities are as yet unknown and the policies in the fishery production are not based on excellent commodities. This research is to examine the superior commodities of fishery production, and the policies in capture fishing production in order to increase the income of fishermen. To determine the excellent commodities, the following analyses were made: (1) production continuity, average production, prices, processing and marketing, (2) Method of Location Quotient (LQ) and (3) SWOT Analysis. The results showed that of 38 species of fish that were analyzed, 31 species were of a continuous type and 7 species of non-continuous type. The average fish production is below the average production of all types of fish except for cakalang fish of 11,131.472 tons and flying fish of 4405.296 tons per year. The fish price is generally below average price of all types, except for the following types of fish: beronang, kerapu, lencam, kakap, and kurisi, the prices of which are higher than the average price. The fish products marketed in the local market / overseas are for example kerapu, cakalang and tuna. Fish products are always marketed in fresh form. Only julung-julung fish is marketed after it is processed by fumigation. Three kinds of fish are also exported they are kerapu, cakalang and tuna. The results of LQ calculation show that there are 12 species of fish with a value of LQ>1, namely: kuweh fish, kerapu, kerong-kerong, teri, tembang, julungjulung, tongkol, lemadang, cakalang, mackerel tuna and cucut. Based on the scoring analysis of commodities in terms of production continuity, production, pricing, processing, and marketing associated with the value of LQ, six kinds of fish as excellent commodities in North Halmahera Regency are cakalang, kerapu, anchovies, julung-julung, tuna, and tongkol. Flying fish, although its production is quite high and can be improved, has the value of LQ <1, so it can not be recommended as a superior fish species. Based on the results of the SWOT analysis, there are six government policies of North Halmahera regency related to the development of capture fisheries, increasing fishing fleet is a top priority followed by the development in the processing of captured fish. Both policies are closely related to labor absorption and economic improvement.
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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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