Judul: Model Pengembangan Kewirausahaan Petani Dan Faktor Yang Mempengaruhi Adopsi Inovasi Sistem Pertanian Terintegrasi Padi Ternak Ruminansia
Abstrak: Integrated farming system has agribusiness potential development based on entrepreneurship, where farmers plays role as an entrepreneur farmer actor. Most of the famers have limited access to information, innovation, capital, technology, and entrepreneur capacity in developing their farming, that results in low capability to become an entrepreneur farmer. Entrepreneur farmer character can be influenced by internal and external factors. Internal factor which influence entrepreneur farmer character are entrepreneur skills and farmer’s personal characteristic, whereas eksternal factor are physical environment, socioculture and economic environment, and institutional environment. Interaction internal and eksternal factor would influence entrepreneur learning process for farmer. The level of farmer’s entrepreneurship in this research is measured by innovation, entrepreneurial skills, and entrepreneurial learning process. The purpose of this research is to analyze the factors that influence the level of innovation adoption ruminant livestock-rice integrated farming system, to identify entrepreneurial skills of ruminant livestock-rice integrated farming system’s farmer, to analyze the correlation between the innovation adoption of ruminant livestock-rice integrated farming system and entrepreneurial skills, and identify the entrepreneurial development model of livestock-rice integrated farming system. The methods used in this research are; logistic model, rank spearman and qualitative inductive. The results showed that, (1) the factors that influence adoption innovation are education, employment status, membership and participation of farmers in gapoktan, (2) ruminant livestock-rice integrated farming farmer’s entrepreneurial skill assessments with good skill critera in sequence are professional, opportunity, management, cooperative, where as skill assessment with neutral criteria is strategy skill, (3) correlation between innovation of ruminant livestock-rice integrated farming system with entrepreneur skill which has significance namely; diversification, integrated patterns, local resources orientation, and processing technology, this relation showed that the higher farmer’s entrepreneur skill, the higher the opportunity of farmer in doing the innovation adoption of livestock-rice of integrated farming system, (4) Based on entrepreneurial farmer development model, the forming of entrepreneurial farmer which have an entrepreneurial skill capacity in the optimal level (professional, opportunity, management, cooperative, strategy) can be achieved when the implementation of innovation adoption by the farmers are conducted along with entrepreneurial learning process, supported by conducive environment.
Keyword: entrepreneurship, innovation, integrated farming system

Judul: Hubungan Karakteristik Inovasi Budidaya Padi Metode SRI (System Rice of Intensification) dengan Pengambilan Keputusan Adopsi oleh Petani
Abstrak: SRI (System Rice of Intensification) adalah suatu metode budidaya padi yang sedang digalakkan untuk meningkatkan produktivitas pertanian, namun masih menghadapi kendala dalam penerimaannya oleh masyarakat. Salah satu faktor yang berhubungan dengan pengambilan keputusan adopsi adalah karakteristik inovasi. Tujuan dari penelitian ini adalah menganalisis hubungan karakteristik inovasi dengan pengambilan keputusan adopsi dan menganalisis hubungan faktor internal dan eksternal dengan pengambilan keputusan adopsi. Metode penelitian menggunakan metode survey yang didukung dengan informasi kualitatif. Hasil dari penelitian ini adalah keuntungan relatif inovasi mendukung tahap konfirmasi; faktor kesesuaian inovasi mendukung tahap pengenalan; faktor kemudahan dicoba sangat mendukung tahap persuasi; faktor umur petani mendukung tahap pengenalan; dan dukungan ekonomi mendukung tahap pengenalan dan tahap konfirmasi.
Keyword: characteristi of innovation, decision making adoption, SRI (System Rice of Intensification), Human ecology, Agricultural activity, Late majority

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh.
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.