Judul: The relationship between characteristics of seaweed farmers  and their competences in three district of South Sulawesi
Abstrak: Seaweed farmers in this research are the farmers who produce seaweeds (Eucheuma spp) in rural coastal area, as their mayor income. The objective of this study is to determine the degree of rela tionship between individual characteristics of seaweed farmers and their entrepreneurship or business competence. Data were collected in July to October 2006 from 280 seaweed farmers. Data were analyzed by Kendall Concor dance procedures, t-test and Path Analysis. The important results of the study were as follows: (1) majority of the seaweed farmers are young, low educated, family size is sedentary, low family income, low in media utilization and sedentary in experience, motivation and capital (2) Degree of all individual char acteristic showed high correlation or high agreement for rank ten component of farmers competence, and (3) Path analysis procedures shows the managerial competence have and effect on technical competence. The influence found as effect or contributed by motivation, social capital and training variables while from the other side contribute by formal education, land use and income.
Keyword: Eucheuma spp, Kendall Concordance procedures, extension program, technical ability, south Sulawesi

Judul: Pengembangan Kompetensi Pembudidaya Rumput Laut Secara Polikultur di Pantai Utara Jawa : Kasus di Bekasi Jawa Barat dan Brebes Jawa Tengah
Abstrak: Seaweed is easily cultivated in polyculture, it needs less capital, small risk, the market is open but there are many challenges and obstacles for farmers successfully produce seaweed. The competence of farmers in improving productivity and income and the factors influenced them were the questions of study. The objectives of this study are : (1) to explore competence of farmer in increasing productivity and income and to identify faktors influence them, and (2) to formulate an extension strategies. Research locations were carried out in Bekasi (West Java) and Brebes (Central Java). The data were collected from July 2010 to October 2010, 200 farmers involved from 457 population with sensus sampling. Data analyzed by using descriptively and structural equations model (SEM). Saveral methods of collecting data were questionnaire, interview, observation and reviewing secondary data and related documents. The research results show that : (1) the competence of farmers at a medium category and influenced by the effectiveness of extension, individual characteristics, and the learning process, (2) Low competence affected productivity, (3) Low productivity was influenced by the institutional support, competence and effectiveness of extension, and (4) Low productivity affected low income. Strategy implemented for developing farmers competence model can be achieved by (a) increasing the effectiveness of extension, (b) increasing learning process, and (c) increasing the institutional support.
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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