Judul: Homophily of Farmers and Extension Workers and Its Influence on Adoption of Innovations (A Case in the Field School of Rice Integrated Crop Management in Kumpeh Ulu Districts, Muarojambi Counties, Jambi Province)
Abstrak: Communication process has a very important role in extension activities in order to achieve behavior change. One of the most obvious and fundamental principles of human communication is that the exchange of messages most frequently occurs between a source and a receiver who are alike, similar and homophily. Homophily is conceptualized at two levels, on the basis of measurement: (1) subjective, the degree to which a source or receiver perceives the dyad as similar in attributes; and (2) objective, the degree of observable similarity between source and receiver. The purpose of this research was to assess the influence of homophily level between farmers and extension worker of adoption of innovation in rice integrated crop management program. This research was a descriptive analytical survey. The primary data in this study were obtained from interviews with 166 farmer beneficiaries and 7 extension workers. The data obtained were analyzed using Kendall Tau-b correlation test (τ). Correlation of test results conclude that: (1) the objective homophily level of farmers and extension worker in general have a real relationship with the subjective homophily level of farmer and extension worker; (2) the objective homophily level of farmers and extension workers in general do not have a real relationship with the adoption of innovation level of rice integrated crop management except experiences and attitudes; and (3) the subjective homophily level of farmer and extension workers in general have a strong relationship with the adoption of innovation level of rice integrated crop management.
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Judul: Efektivitas Komunikasi Pemuka Pendapat Kelompok Tani Dalam Menggunakan Teknologi Usahatani Padi (Kasus di Kecamatan Kupang Tengah Kabupaten Kupang NTT)
Abstrak: Research objectives were: (1) to expose opinion leader characteristics, as well as using information source, (2) to detect communication effectiveness among opinion leader, (3) to evaluate applying rice farming technology, (4) to relationship among characteristics, information source, and frequency leader to leader employing, communication effectiveness practicing rice technology to farmer at Kupang Tengah district Kupang regency Nusa Tenggara Timur province. Research was designed in descriptive correlation survey method. The data was collecting during March to May 2008. population was the entire opinion leader from 5 rice farmer groups. Total respondents were 99 persons. Data was analyzed by employing rank Spearman statistical test. Result indicated: (1) leader characteristics was potentially enough to apply rice technology, (2) employing mass media as source of information was a little bit poor, (3) introducting rice technology by leader, indicating more effective, (4) several characteristics factors which are significantly correlated positively as well as negatively to communication effectiveness: social participation, formal education, family size, attitude, social status, farm size, using mass media and contact to extension agent.
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Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf