Judul: Model kebijakan pengembangan usaha sapi perah skala mikro berwawasan lingkungan di Kabupaten Subang
Abstrak: Until now, the development of micro-scale dairy cattle business in the District of Sagalaherang and Ciater of the Subang Regency not fully reached the desired level yet. This study intends to build a model of business development policy of the environmentally sound micro-scale dairy cattle in Subang Regency by using System Approach, Quantitative and Qualitative Analysis, Analytical Hierarchy Process (AHP), and Interpretative Structural Modeling (ISM) with 253 respondents during 6 months (January to June 2011). Statistical tests of this study show that factors significantly associated (p-value Alpha  0.05) with the development of environmentally sound micro-scale dairy cattle business (USPSMWL) are: (1) frequency of attending breeding extension, (2) farmers’ knowledge, (3) breeding management behaviour; (4) time length to run the business; and (5) time allocated to manage the business each day. Based on AHP, the main strategy of developing USPSMWL is "improving the readiness of the community/farmers". Based on ISM, the key factor of developing USPSMWL is “harmonious team-work among farmers, bankers and government officials”. The model simulation result can give a description of the real system behaviour. Of the three formulated scenarios (optimistic, moderate, and pesimistic), the implementation of the optimistic scenario is the most appropriate one. This study concludes that the policy of USPSMWL development should be focused on: (a) strengthening harmonious cooperation among government institutions, (b) increasing community readiness, (c) designing spatial management for fodder availability, and (d) increasing the number of waste processed to produce bio-gas and organic fertilizer products, including the marketing of those products.
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Judul: The policy model of business development of the environmentally sound micro-scale dairy cattle in Subang Regency
Abstrak: Until now, the development of micro-scale dairy cattle business in the District of Sagalaherang and Ciater of the Subang Regency not fully reached the desired level yet. This study intends to build a model of business development policy of the environmentally sound micro-scale dairy cattle in Subang Regency by using System Approach, Quantitative and Qualitative Analysis, Analytical Hierarchy Process (AHP), and Interpretative Structural Modeling (ISM) with 253 respondents during 6 months (January to June 2011). Statistical tests of this study show that factors significantly associated (p-value Alpha  0.05) with the development of environmentally sound micro-scale dairy cattle business (USPSMWL) are: (1) frequency of attending breeding extension, (2) farmers’ knowledge, (3) breeding management behaviour; (4) time length to run the business; and (5) time allocated to manage the business each day. Based on AHP, the main strategy of developing USPSMWL is "improving the readiness of the community/farmers". Based on ISM, the key factor of developing USPSMWL is “harmonious team-work among farmers, bankers and government officials”. The model simulation result can give a description of the real system behaviour. Of the three formulated scenarios (optimistic, moderate, and pesimistic), the implementation of the optimistic scenario is the most appropriate one. This study concludes that the policy of USPSMWL development should be focused on: (a) strengthening harmonious cooperation among government institutions, (b) increasing community readiness, (c) designing spatial management for fodder availability, and (d) increasing the number of waste processed to produce bio-gas and organic fertilizer products, including the marketing of those products.
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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