Judul: Hubungan Dinamika dan Peran Kelompok dengan Kemampuan Anggota dalam Penerapan Inovasi Teknologi Usahatani Kopi Rakyat:
Abstrak: The objectives of this study were as follows: (1) to analyze the characteristics of farmer group members in implementing technological innovation of smallholders coffee farming; (2) analyze the ability level of farmer group members and (3) describe the characteristics of members, dynamic and role of groups that associated with member’s capability. The study was designed as a descriptive correlation study that conducted in January-March 2010. The number of 88 respondents using proportionate stratified random sampling method of all smallholder coffee farming groups in Sidomulyo Village Silo District Jember Regency. Primary and secondary data were analyzed using descriptive and inferential statistics with Tau-B Kendall correlation. Results showed that there were some differences in the characteristic between members of smallholder coffee farming groups for intermediate level and advanced level. Group dynamic and role intermediate and advanced level were high, but for advanced level still low on group role as an economic units. Member’s capability level of them were high but for advanced level still low in the technological innovation implementation of post harvest and access to information, capital and markets. Characteristics of group members that showed significantly positive correlation with capability in the technological innovation implementation of coffee farming were the experience of farming, membership mass of farming group, the cosmopolite level and motivation. Group dynamic that showed significantly positive correlation with capability in the technological innovation implementation of coffee farming were group goals, group building, cohesiveness, group atmosphere, pressure and effectiveness of group. Likewise, the significantly positive correlation was found in the role of farming groups and capability in the technological innovation implementation of coffee farming.
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Judul: The Leadership of coffee farmers
Abstrak: Kopi merupakan komoditas hasil perkebunan yang memiliki kontribusi besar terhadap perekonomian negara. Sumatera Selatan merupakan penghasil kopi terbesar di Indonesia. Secara sosiologis petani kopi di daerah ini cenderung hidup berkelompok dan melahirkan budaya serta norma tersendiri untuk menjaga dinamika dalam sosialnya. Penelitian bertujuan menggali modal kepemimpinan yang dimiliki oleh Ketua Talang sebagai pemimpin lokal kelompok petani kopi serta dinamika dalam kelompok sosialnya. Metode yang digunakan untuk menggali fakta, data, dan informasi dalam penelitian ini adalah pendekatan kuantitatif yang didukung data kualitatif dengan responden sebanyak 37 orang. Hasil penelitian menunjukkan bahwa terdapat hubungan negatif antara modal kepemimpinan terhadap dinamika sosial. Modal kepemimpinan yang dimiliki ketua talang tergolong tinggi dan dinamika sosial yang terjadi tergolong rendah. Terdapat hubungan positif antara modal kepemimpinan terhadap indikator pengendalian sosial dan mobilitas sosial serta terdapat hubungan negatif antara modal kepemimpinan dengan indikator penyimpangan sosial dan perubahan sosial., Coffee is a plantation commodity that has a major contribution to the country's economy. South Sumatera is the largest coffee producer in Indonesia. Sociologically, coffee farmers in this area tend to live in groups and produce their own culture and norms to maintain social dynamics. This study aims to explore the leadership capital possessed by the head of the Talang as a local leader of the coffee farmer group and the dynamics of the social group. The method used to explore facts, data, and information in this study is a quantitative approach supported by qualitative data with 37 respondents. The results obtained indicate that there is a negative relationship between leadership capital and social dynamics. The leadership capital owned by the head of the gutter is high and the social dynamics that occur are low. There is a positive correlaton between leadership capital on indicators of social control and social mobility and there is a negative relationship between leadership capital and indicators of social deviation and social change.
Keyword: coffee farmer, group dynamics, leadership capital

Judul: Separation of Neodymium from U3Si2/Al Fuel Plate for Burn-Up Determination
Abstrak: Neodymium is a common fission product produced in nuclear fission reactions. Neodymium in this study was chosen as a burn-up indicator for U3Si2/Al fuel element plates because the neodymium isotope is a stable fission product with a fairly high yield. Some procedures were carried out to separate neodymium, starting with the separation of cesium isotopes (137Cs, 134Cs) through the precipitation method, then separation of uranium isotopes (235U, 238U) and plutonium isotopes (239Pu, 238Pu) with Dowex 1x8 ion exchange resin, and separation of neodymium (Nd), samarium (Sm), as well as cerium (Ce) with Dowex 1x4 ion exchange resin. The Cs recovery reached 99.95%. The U and Pu isotopes resulting from the separation are subjected to an electrodeposition process and the weight of each isotope can be measured with an alpha spectrometer. The separation results of Nd from Sm and Ce have been proven using an XRF spectrometer. The neodymium isotopes separation was corrected using the standard addition method, and an average total Nd content of 2.4 ppm was obtained in the PEB U3Si2/Al bottom solution. It is hoped that this separation method can be applied in determining burn-up of nuclear fuel.
Keyword: neodymium, burn-up indicator, U3Si2/Al fuel plate