Judul: Model pengelolaan lahan rawa lebak berbasis sumberdaya lokal untuk pengembangan  Usahatani berkelanjutan  (studi kasus di Kecamatan Sungai Raya dan  Sungai Ambawang, Kabupaten Kubu Raya - Kalimantan Barat)
Abstrak: The exploitation of swamp land is still limited when compared to the cultivation of dry land or irrigated land. Some of the factors that make the exploitation of swamp area far from expectation and its yields not maximum, for example 1) the wrong perception of farmers that the farming they are doing now has given high income, 2) a lack of capital, 3) low technological access, 4) characteristics of farmer‘s subsistence, and 5) tradition-based farming. This study was aimed to formulate a resources-based swamp land development model to increase land productivity and farmer Income. This research was conducted in the Sub-District of Sungai Ambangah in the District of Sungai Raya, and the Sub-District of Pasak Piang in the District of Sungai Ambawang, in the Regency of Kubu Raya, West Kalimantan Province. The analysis of each crop cultivated in both Sungai Ambangah and Pasak Piang gave the following results respectively for both areas; (1) rice with the R/C ratio of 3,30 and 4,80; (2) rubber with B/C ratio of 1,23 and 24,35; and (3) palm with the B/C ratio of 1,52. These results, if linked to the value of Appropriate Living Needs (ALN) and the minimum land area (ML) that must be fulfilled, indicate that the farmers in Sungai Ambangah could reach only 26,92% of ALN and require a minimum land of about 3,15 hectares; whereas the farmers of Pasak Piang could meet 34,53% of ALN and need a minimum land of approximately 2,54 hectares. Further, the sustainability status for the five dimensions in the existing condition of Sungai Ambangah obtained the index value of 54,82% or the category of sustainable enough for the institutional dimension, while the other four dimensions got the value of less than 50,00%, or categorized as less sustainable. As for the village of Pasak Piang, it got the index value of 52,19% or the category of sustainable enough also for the institutional dimension, whereas the other four dimensions obtained the value of less than 50,00% or considered less sustainable. The model formulated from the results of this study is based on the available local resources in both research sites, a model of sustainable farm development on swamp lands (UTLRL). Conceptually, this is also called an integrated farming model, that is, by integrating crops and livestock. The recommended policies formulated from the results of this study include: (1) the pattern of farming and increased cropping index, (2) maintenance of livestock, (3) the provision of farm capital, (4) the availability of micro finance institutions, (5) the active role of agricultural extension agencies, (6) farmers and farmer groups, (7) support from research institutions and higher education, and (8) post-harvest management and marketing.
Keyword: West Kalimantan

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: 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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