Judul: Potensi pengembangan lahan rawa lebak untuk perluasan lahan padi di Kabupaten Hulu Sungai Utara Kalimantan Selatan
Abstrak: Agricultural development has an important position for national food security. Increased food security is pursued through the improvement of rice production. The island of Java as the biggest rice producers continue to decrease in size field rice area, so another rice field alternative outside of Java is needed. One of them is nontidal swamp land that is still very wide, such as in Hulu Sungai Utara District South Kalimantan Province. The purpose of this study was to identify suitable land for paddy cultivation and development as well as conservation areas to safeguard the sustainability of farming, knowing the center of rice production and priority directions of development policy. Identify potential rice field using land suitability analysis by remote sensing data and processing data done in ArcGIS 9.3. Land suitability analysis using ArcGIS 9.3 with reference to the criteria established by the Department of Agriculture. Conservation area determined by reference to the Presidential Decree 32 of year 1990 on protected areas. Potential development for rice field is done by overlay spesific analysis of land suitability result and existing landuse are interpreted from the ALOS AVNIR, Landsat and Google Earth images. Centralization of activities carried out by Location Quetion Analysis and policy priorities with SWOT Analysis. The results showed that the potential development of land for rice field is still very widespread, especially in Danau Panggang Subdistrict and Paminggir Subdistrict. Peatland conservation areas are in northern and lake buffer areas in Danau Panggang Subdistrict . River buffer areas spread across the district. Policy priorities are directed to the appropriate utilization of the potential area for rice in the base region with the expansion of paddy fields.
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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: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix