Judul: Analisis pendapatan dan persepsi anggota terhadap penerapan Internal Control System (ICS) pada pertanian padi organik
Abstrak: Assurance of organic products through organic certification system is much demanded by consumers. Internal Control System (ICS) is a consolidated management concerning the effort to certify organic products. Due to its collective mechanism, farmers are able to manage its agribusiness more profitably financially. The purpose of this study was (1) to analyze the differences in income levels of farmer groups who are certified organic and non-certified organic, (2) to get an overview of the implementation of ICS in farmers group Gapoktan Simpatik, and (3) to analyze the perceptions of group members towards the implementation of ICS either certified or non-certified organic. This research was on a case study at upperstream of Cideres and Cigunungjaga watershed in the district of Sukahening, Tasikmalaya, which is a member of Gapoktan Simpatik. The analysis was performed using the R/C ratio, homogeneity analysis of data by income level using the Kolmogorov-Smirnov, analysis of income differences between the two groups of independent farmers using the Mann-Whitney test, and biplot analysis for the analysis of perceptions of group members toward ICS implementation variables. The results showed that the R/C ratio for the certified group was 1.77, and for non-certified group 1.53. The average income level of certified group was Rp19,394,800/ha/ year, while the non-certified Rp12,728,940/ha/year. The results also showed that perception toward ICS implementation of certified group was better than the non-certified. Most of the certified group respondent approached the vector of all variables, which means that they were satisfied and familiar with all the variables, while the group of respondents who were non-certified did not approach the vector. The parameters that were widely varied by respondent group responses were the certified variable (X8) of purchase, handling, processing, and export, while the most uniform response variables of the respondents were variable (X6) of organizational and ICS personnel. While the groups that were not certified provided a variety of assessment on the variables (X3) of risk management and uniform assessment on (X9) external inspection and certification.
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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: 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