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.
Keyword: 

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.
Keyword: 

Judul: Transisi Fasa Materi Hadronik ke Materi Kuark pada Inti Bintang Neutron.
Abstrak: Bintang neutron terdiri dari beberapa lapisan yang disusun oleh materi nuklir yang berbeda dengan kerapatan yang semakin tinggi ketika mendekati pusat bintang. Inti luar bintang neutron disusun oleh materi hadronik (nukleon, lepton, dan hyperon), sedangkan inti dalam bintang neutron disusun oleh kuark-kuark bebas (up, down, strange) yang saling berinteraksi. Tujuan penelitian ini adalah mempelajari bagaimana transisi dari inti luar ke inti dalam bintang neutron dengan menggunakan pendekatan RMF (Relativistic Mean Field) untuk materi hadronik dan CIDDM (Confined Isospin Density Dependent Mass) untuk materi kuark. Tekanan transisi diperoleh ketika potensial kimia barion materi hadronik dan materi kuark bernilai sama. Nilai tekanan transisi dengan parameter SU6-TM1 sekitar 87 MeV/fm3 dan diperoleh massa maksimum bintang neutron yaitu 1.92M dengan jari-jari sekitar 8.62 km. Nilai tekanan transisi dengan parameter SU6-G2 sekitar 53 MeV/fm3 dan massa maksimum bintang neutron yaitu 1.88M dengan jari-jari sekitar 8.16 km. Jenis transisi fasa adalah orde satu ditandai dengan diskontinuitas dalam kerapatan energi (adanya mixed phase). Parameter-parameter pada model nuklir yang digunakan menyebabkan perbedaan kekakuan persamaan keadaan (EOS) dari materi hadronik dan materi kuark sehingga nilai tekanan transisi dari fasa hadronik ke fasa kuark juga berbeda.
Keyword: bintang neutron, persamaan keadaan, transisi fasa