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: Faktor-faktor yang mempengaruhi efektivitas komunikasi di dalam sekolah lapang padi
Abstrak: A study was carried out to analyze the relationships among influencing factors to communication effectiveness in socialization of technological innovation in conducting the program of Field School of Integrated Crop Management of Rice, in Cikarawang Village, Bogor Barat Sub-district, Bogor City. Data were collected using questionnaire method, and then analyzed using τ - Kendal descriptive method. The results of the study showed that the factor of field guide characteristic had a significant correlation with the communication participation of farmer. The field guide characteristics also had a significant correlation with the technological innovation characteristic (i.e. trialibility and observability). Some elements of farmer characteristics (i.e. age and experience) significantly correlated with the communication participation of farmer. However, all elements of communication channels (type of media and place and time suitability) were not correlated with the communication participation of farmer. This could be due to the absence of other type of media, other than the direct communication (meeting, discussion and field practice). Farmer participation to the main activities of the field school program (PRA, meeting, discussion and field practice) significantly correlated with the knowledge enhancement (cognitive) and with the attitude change tendency (affective) of program-involved farmers. However, the communication participation of farmer was not correlated with the action of program-involved farmers to apply technological innovation of the field school. In other words, although program-involved farmers had obtained enough knowledge and had tendency to choose technological components in the field school program, but in general they had not yet applied optimally the components.
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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