Judul: Analisis Peranan Koperasi Kabita Terhadap Usaha Tani Pembenihan Ikan Lele Sangkuriang
Abstrak: One of superiority from aquaculture that people interest is cat fish. Cat fish product be hanging on hatchery production. Based on data from breeding and aquaculture departements in bogor, the condition on hatchery cat fish in bogor still low. This condition will be influence about cat fish production. One of effort that farmer do to handle this problem is bulit an Kabita Cooperative. The research method make use of comparison analysts that comprise input comparison, income and R/C ratio. Product analysis show that avarage and variation on input of member farmer more lower and of one kind proportionate non member farmer. The member farmer get more higher income then non member farmer. Income of cash cost dan total cost famer member get amounting to Rp 24.830.384 and Rp 18.691.015. While income of cash cost dan total cost non famer member get amounting to Rp 7,837,226 to Rp 3,963,309. R / C ratio based on cash costs and the total cost is get by farmer members of 2,62 and 1,90. While the R / C ratio of the cash cost and the total cost get by non-member farmers of 1.55 and 1.24. Better operating conditions shows that the role be given Kabita Cooperative learning / training to farmer members
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Judul: Analisis Pendapatan USahatani Pembenihan Lele Dumbo dan Sangkuriang di Desa babakan Kecamatan Ciseeng Bogor
Abstrak: Fishery is one of the sectors that can improve indonesian welfare. Evident from the value of Gross Domestic Product increased by 21.55% per year from 2004 until 2012. The fisheries sector is classified into two categories namely fisheries and aquaculture. Catfish is one of the prime comodities of aquaculture. Babakan, is one of the catfish seed production centers in Bogor. There are two varieties of seed that developed in Babakan, Dumbo in UPR Jumbo Lestari and Sangkuriang in Kubang Sejahtera. The development of hatchery technology that marries the second and sixth derivative of Dumbo’s catfish and expectation to be able to produce more products led to the emergence of new varieties namely sangkuriang. The analysis used R / C ratio and chi-square. The results showed that the average income per hectare dumbo are greater than sangkuriang with a value of the R / C ratio reached 1.40 for Dumbo and sangkuriang only at 1.16. Meanwhile, from the results of different test chi square analysis, X2 value calculated for the cash cost of 36,5325 and 35.0972 for a total cost greater than the X2 table at 23.685.
Keyword: R/C ratio dan Chi Square, Income, Sangkuriang’s catfish hatchery, Dumbo’s catfish hatchery

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