Judul: Analisis Pendapatan Usahatani dan Tataniaga Buncis Organik dan Buncis Non-organik di Desa Cisondari, Kecamatan Pasirjambu, Kabupaten Bandung
Abstrak: As one of the best alternative for healthy lifestyle and sustainable environment, organic farming is increasingly demanded and the sell price is quite higher than anorganic vegetables. Among the organic farming system vegetables in Indonesia, one of them is fine beans produced in Cisondari Village. Cisondari Village is located in Bandung District and cultivated with both organic and anorganic system, though the number of anorganic farmers are higher than the organic one. The aims of this research are to analyze and compare the variability, income of fine beans farming, and R/C ratio in both organic and anorganic system; to analyze the flow of marketing channel and institutions involved in the trading system; and to analyze the margin trading system, the farmer’s share, and π/c ratio on organic and anorganic fine beans marketing. The result of this research concluded that the variabilities of both organic and anorganic fine beans are different in the input, output, and multiple stages of cultivation. Farm income and the ratio of R/C on anorganic fine beans have more benefits than the organic one. There are 3 marketing channels in organic trading system and 6 marketing channels in anorganic. The most efficient margin channel on organic fine beans trading system is the 3rd channel and the 4thchannel in anorganic one.
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Judul: Analisis pendapatan petani dan marjin pemasaran beras organik (Studi kasus: Kecamatan Cikalong, Kabupaten Cianjur, Jawa Barat)
Abstrak: Sistem pertanian organik merupakan salah satu alternatif untuk mengurangi dampak negatif yang telah ditimbulkan oleh revolusi hijau dan sebagai alternatif untuk memeperkecil biaya dalam berusahatani. Pertanian organik telah banyak dikembangkan dibeberapa Pulau Jawa, salah satunya di Jawa Barat. Kecamatan Cikalong dipilihnya sebagai tempat penelitian pertanian organik karena di daerah tersebut telah menerapkan dan mengembangkan sistem pertanian organik. Penelitian ini bertujuan untuk : (1) menganalisa tingkat pendapatan petani organik dan petani an-organik, (2) menganalisa faktor-faktor yang memepengaruhi tingkat pendapatan petani organik dan petani an-organik, (3) menganalisa saluran pemasaran beras organik mulai dari tingkat produsen sampai tingkat konsumen, dan (4) menganalisa marjin pemasaran komoditi beras organik.
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Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave