Judul: Sistem Manajemen Pengetahuan dalam Pemilihan Benih dan Varietas Unggul Padi
Abstrak: This research covers the problem of the lack information for Farmers regarding rice seeds and high-yielding variety. Moreover, there is limitation for experts in sociality knowledge regarding high-yielding rice variety and seeds. The purpose of this research is to develop a Knowledge Management System For The Selection Of High-Yielding Rice Variety and Seeds. The method used is the Linear Life Cycle model by Giarrantano and Riley. This method consists of six stages, including planning, knowledge definition, knowledge design, code & checkout, knowledge verification, system evaluation. The system implementation use PHP and MySQL. The result in this research consist of three parts including cultivation knowledge which stored in modules and files that can be seen, searched, and downloaded. Varieties knowledge stored in search forms based on names, and parameters have been determined. Consultation knowledge stored in the post comments, e-mail and yahoo messenger.
Keyword: 

Judul: Sistem pemilihan varietas unggul kedelai (SIPEKSOY)
Abstrak: The Government through the Ministry of Agriculture has released more than 72 soybean varieties. High yielding varieties is one of the factors that play an important role in increasing the productivity of soybean. Lack of access the information on soybean high yielding varieties led to the knowledge level of farmers about soybean varieties are also low. This is demonstrated by the habits of farmers who did not use high yielding varieties of soybean. Farmers were not using varieties in rotation. They use varieties based on experience and not based on the knowledge or the results of the valid study. It causes decreased productivity and resilience of soybeans. Limitations of experts to disseminate information about soybean varieties and information on pests and diseases, it is necessary to build a system that can manage and store information that can be accessed easily by farmers. Soybean varieties electoral system (SIPEKSOY) is one of the systems that can be used to overcome these limitations. The purpose of this study was developed a system of the selection of soybean high yielding varieties based on online. The method used adopted SDLC method including planning, analysis, design, implementation, testing, and evaluation. The implementation of this system is using PHP and MySQL. The electoral system of soybean high yielding varieties produced was presented in three form, namely the selection of soybean varieties in the search of varieties; searching of varieties by category determination, namely potential yield category, ripe pod age, seed coat color, seed size, the adaptation of land or area, plant height, security to pests or diseases; and the search based on the keywords entered by the user. This soybean varieties electoral system simplifies and speeds up the user, e.g. extension workers, farmers, society, and experts in obtaining information about high yielding varieties of soybean.
Keyword: information system, soybean

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