Judul: Faktor-Faktor yang Mempengaruhi Keputusan Pembelian Petani dalam Memilih Benih Padi Bersertifkat PT SHS (Sang Hyang Seri) di Kabupaten Bogor
Abstrak: PT SHS is one of the companies that facing competition in the seed industry in Indonesia. The purpose of this research are: 1) to identify characteristics and decision-making process of purchasing seed certified by rice farmers, 2) to analyze the factors that influence the decision-making process of farmers, 3) determines the managerial strategy/marketing mix which right for the company. Based on interviews with 50 farmers selected by simple random sampling, shows that most of the farmers were middle-aged, with only past elementary school, own land holdings with an area of 0.8-3 hectares, and earn more than $ 9 million. The purchase decision making process by farmers based on their desire to obtain high rice iii productivity, information on certified seed retrieved most of the farmers through the stall saprotan, the main criteria into consideration in selecting the seed farmers rice is certified seed, and the seed quality that is certified is the most used by farmers is a brand of seeds from PT SHS, those purchasing is a done individually. Further analysis of the factors that affect farmers in the decision-making process of purchasing a certified padi seeds showed that the economic and the product is the most influences factor that affecting purchasing decisions by farmers where the primary variable of this factor is the quality of the seed. Therefore, the quality of the seed is a priority to be considered in order to win the competition.
Keyword: purchasing decision., consumer behavior, seed

Judul: Analisis faktor-faktor yang mempengaruhi keputusan petani dalam pemasaran gabah/beras : Kasus desa Mejasem, Tengeng Kulon, dan Yosorejo kecamatan Sragi Kabupaten Pekalongan Propinsi Jawa Tengah
Abstrak: Tercapainya swasembada beras di Indonesia tidak bisa terlepas dari peran petani yang bersedia menanam padi, serta mengadopsi teknologi dalam proses pertumbuhan produksi dan produktivitas. Agenda penting selanjutnya adalah bagaimana kesejahteraan petani itu dapat ditingkatkan. Untuk meningkatkan kesejahteraan petani tidak hanya masa- lah produksi dan produktivitas saja yang harus diperhatikan, melainkan juga masalah kualitas produk, pemasaran, serta diversifikasi, baik vertikal maupun horisontal. Usaha ini dapat dimulai dengan mempelajari perilaku ekonomi petani padi melalui faktor-faktor yang mempengaruhi keputusan petani. Penelitian bertujuan mempelajari faktor-faktor yang mempengaruhi keputusan petani padi dalam pilihan institusi pemasaran, waktu dan jumlah jual gabah, sehingga tergambar perilaku ekonomi petani. Mengetahui rantai pemasaran gabah/beras, serta mempelajari posisi tawar petani padi terhadap pedagang. Hasil penelitian menunjukkan bahwa seluruh petani memasarkan gabahnya ke pedagang, padahal KUD dan sebagian penggilingan juga bersedia melayani pemasaran gabah tersebut. Faktor utama petani memasarkan gabah ke pedagang adalah rendahnya biaya transportasi, karena transaksi jual beli dilakukan di sawah dan atau rumah petani.
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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