Judul: Analisis Pendapatan dan Faktor Penentu Adopsi Teknologi PHSL (Pemupukan Hara Spesifik Lokasi) untuk Usahatani Padi (Studi Kasus di Desa Jembungan, Kecamatan Banyudono, Kabupaten Boyolali, Jawa Tengah)
Abstrak: The highly increase of crop production in the future will be a compulsion and utilization of field will be more intensive. Therefore, precise pescription of crop fertilization is required. Site Specific Nutrient Management (SSNM) application is an innovation of technology for rice farming through fertilization recommendation which accurate in type, dose and time of fertilization to increase rice production and farmer incomes. SSNM application was developed by IRRI (International Rice Research Institute) in Philippines.The aim of this research is to get illustration about analysis of farmers on new technologies SSNM application of web-based technology. Comparing farm income and productivity of rice farmers using the technology by not using technology SSNM. Identifying factors that influence farmers to adopt SSNM applications. There was a significant differences in fertilization cost between the usage of SSNM and manually applied fertilization. In manually applied fertilization costs Rp 320,065 or about 20.62 percent of total cost, while in SSNM fertilization costs only12.93 percent of total cost or Rp 23,078. The application of SSNM was able to increase average rice production about 314.38 kg / hectare and farmers income raised to Rp 1,100,328 / hectare. There is a driving factor for farmers to use the SSNM application including increased production, the facilities, the capital, the efficient use of fertilizer and maintain the field quality.Farm rice incomes and field ownership have positive relationship toward farmer to adoption SSNM application.
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Judul: Income Analysis and Factors Affecting Willingnes to Adopt for SRI Organic Method in Rice Farming (Case Study: Bumi Harapan Village, Wita Ponda Subdistrict, Morowali District, Provinsi Sulawesi Tengah)
Abstrak: Analisis Pendapatan dan Faktor-Faktor yang Memengaruhi Willingnes to Adopt Metode SRI Organik Pada Usahatani Padi (Studi Kasus : Desa Bumi Harapan, Kecamatan Wita Ponda, Kabupaten Morowali, Provinsi Sulawesi Tengah). Dibimbing oleh HASTUTI dan DEA AMANDA. Indonesia mencapai swasembada beras nasional tahun 1984 dengan sistem pertanian konvensional, prestasi tersebut tidak berkelanjutan karena dihadapkan berbagai masalah. Menyikapi permasalahan tersebut, inovasi pertanian padi organik dapat diterapkan. Pertanian Organik berbasis kearifan lokal diperkenalkan untuk pengembangan pertanian organik adalah System of Rice Intensification (SRI) Organik. Tujuan penelitian (1) menganalisis persepsi petani terhadap penggunaan metode SRI Organik, (2) menganalisis perbandingan pendapatan padi Organik dan padi konvensional, (3) menganalisis faktor yang memengaruhi kesediaan adopsi metode SRI Organik. Penelitian ini menggunakan analisis skala Likert untuk mengetahui persepsi petani, analisis pendapatan untuk mengetahui perbandingan pendapatan, dan analisis regresi logistik untuk mengetahui faktor yang memengaruhi kesediaan adopsi. Hasil persepsi penggunaan metode SRI Organik pada petani yang mengadopsi metode SRI Organik yang tertinggi yaitu produksi padi SRI Organik yang lebih tinggi dan sehat, persepsi terendah teknis budidaya SRI organik yang rumit. Persepsi terhadap penggunaan metode SRI Organik pada petani yang belum mengadopsi metode SRI Organik tertinggi yaitu SRI Organik menggunakan pupuk dan pestisida ramah lingkungan, persepsi terendah yaitu ketersediaan tenaga kerja pertanian produktif dan terampil terbatas. Analisis pendapatan menunjukan R/C ratio lebih dari satu artinya usahatani menguntungkan. Faktor yang signifikan memengaruhi petani mengadopsi padi metode SRI Organik yaitu pengalaman, pernah mendapat pelatihan dan status kepemilikan lahan. Kata kunci: pertanian konvensional, regresi logistik, skala likert, usahatani padi, Income Analysis and Factors Affecting Willingnes to Adopt for SRI Organic Method in Rice Farming. (Case Study: Bumi Harapan Village, Wita Ponda Subdistrict, Morowali District, Provinsi Sulawesi Tengah). Supervized by HASTUTI and DEA AMANDA. Indonesia achieving national rice self-sufficiency in 1984 with a conventional farming system, this achievement is not sustainable because it is faced with various problems. In response to these problems, organic rice farming innovations can be applied. Organic agriculture based on local wisdom introduced for the development of organic agriculture is the Organic System of Rice Intensification (SRI). The objectives of the study (1) were to analyze farmers' perceptions of the use of the Organic SRI method, (2) to analyze the income comparison between Organic and conventional rice, (3) to analyze the factors that influenced the willingness to adopt the Organic SRI method. This study uses a Likert scale analysis to determine farmer perceptions, income analysis to determine income comparisons, and logistic regression analysis to determine factors that influence adoption willingness. The results of the perception of the use of the Organic SRI method on farmers who adopt the Organic SRI method are the highest, namely the production of organic SRI rice which is higher and healthier, the lowest perception of complicated organic SRI cultivation techniques. The highest perception of the use of the Organic SRI method in farmers who have not adopted the Organic SRI method is Organic SRI using environmentally friendly fertilizers and pesticides, the lowest perception is that the availability of productive and skilled agricultural labor is limited. Income analysis shows that the R/C ratio is more than one, meaning that
Keyword: Conventional Farming, Logistic Regression, Likert Scale, Lowland Rice

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