Judul: Pengaruh Kredit Kupedes BRI Terhadap Produksi dan Pendapatan Usahatani Padi di Kecamatan Kroya, Indramayu
Abstrak: Business in Indonesia can’t be separated from bank as intermediation institution. As also in Agribusiness, bank is needed as creditur institution. BRI is one of the creditur bank in Agribusiness with the loan product named Kupedes. One of the area which already experienced by Kupedes credit facility is Kroya Subsdistrict, as the largest rice producing centers in West Java. For the research concerning the effect of Kupedes credit with rice production and farm income in Kroya subsdistrict. This research aims to analyze the impact of Kupedes credit with rice production and farm income in Kroya subsdistrict. It uses quantitative analysis with Cobb – Douglass method and Principal Component Analysis to analyze production factor and to analyze the income uses R/C ratio method and t-test set to see the impact of credit to production. Based on this analyze, rice production influenced by land, seed, N substance, P substance, K substance, nutrition and labour. By the eight factors in two condition, all at before and after credit condition gives positive to production elasticity. For income analyze in two condition, before and after credit get more than one R/C ratio result, it’s describe that Kroya subsdistrict in two condition before and after credit rice farm have been efficient and profitable. Than for the credit influence, the result obtained that credit influence or affect production
Keyword: Cobb – Douglass and R / C ratio., income analyze, production factor analysis

Judul: The Effect of Credit on Technical Efficiency and Profits of Rice Field Farming in Kutai Kartanegara Regency
Abstrak: Kredit menjadi faktor penunjang yang penting pada kegiatan produksi. Pentingnya kredit sebagai faktor penunjang karena dapat menaikkan kebutuhan input produksi dan produktivitas pada usahatani. Selain itu, dapat memberikan kemudahan dalam kegiatan yang dapat meningkatkan produksi dan keuntungan usahatani sehingga terjadi pembentukan modal. Namun, tidak semua kredit yang diberikan dimanfaatkan oleh petani dalam kegiatan usahataninya. Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi keputusan petani menggunakan kredit, menganalisis efisiensi teknis usahatani padi sawah pada petani kredit dan petani non kredit, dan menganalisis pengaruh kredit terhadap keuntungan usahatani padi sawah. Pengumpulan data dilakukan pada bulan Januari hingga Mei 2020 dengan penentuan responden menggunakan companion modeling melalui tanya jawab kepada petani dengan bantuan kuesioner, sehingga didapat jumlah responden untuk petani kredit sebesar 36 orang dan petani non kredit sebesar 66 orang. Keputusan petani menggunakan kredit dianalisis dengan analisis regresi logit, pengaruh kredit terhadap efisiensi teknis dianalisis dengan analisis fungsi Cobb-Douglas, dan pengaruh kredit terhadap keuntungan usahatani dianalisis dengan persamaan regresi berganda. Hasil penelitian menunjukkan menunjukkan bahwa petani kredit lebih efisien dibandingkan petani non kredit. Rata-rata tingkat efisiensi teknis petani kredit sebesar 0,93 sedangkan petani non kredit sebesar 0,87. Berdasarkan hasil penelitian, bahwa dengan menggunakan kredit terdapat peluang bagi petani, untuk memenuhi penyediaan input produksi yang diperlukan agar dapat meningkatkan produksinya, karena efisiensi teknisnya lebih tinggi dibandingkan dengan petani yang tidak menggunakan kredit. Keuntungan untuk petani kredit sebesar Rp7.755.852,59 dan keuntungan untuk petani non kredit sebesar Rp12.460.129,06 per musim tanam. Keuntungan yang diperoleh dari usahatani padi sawah dengan kredit lebih kecil dibandingkan keuntungan petani non kredit. Hal ini karena biaya yang dikeluarkan petani non kredit lebih rendah, sehingga keuntungan yang diperoleh tinggi., Credit is an important supporting factor in production activities. The importance of credit as a supporting factor because it can increase the need for production inputs and productivity in farming. In addition, it can provide convenience in activities that can increase production and farm profits so that capital formation occurs. However, not all of the credits given are used by farmers in their farming activities. This study aims to analyze the factors that influence the decision of farmers to use credit, analyze the technical efficiency of lowland rice farming on farmers who use credit and farmers who do not use credit, and analyze the effect of credit on the profits of lowland rice farming. Data collection was carried out from January to May 2020 with the determination of respondents using the companion modeling method through question and answer to farmers with the help of a questionnaire, the number of respondents for credit farmers was 36 people and non-credit farmers were 66 people. Farmers' decision to use credit was analyzed by logit regression analysis, the effect of credit on technical efficiency was analyzed by Cobb-Douglas function analysis, and the effect of credit on farm profits was analyzed by multiple regression equations. The results showed that farmers who used credit was more efficient than farmers who do not use credit. The average level of technical efficiency of credit farmers were 0,93 while farmers who do not use credit were 0,87. Based on the results of the
Keyword: efisiensi teknis, kredit, padi sawah, regresi, stochastic frontier

Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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