Judul: Visualisasi Silsilah Varietas Kedelai Menggunakan Algoritme Directed Acyclic Graph
Abstrak: The pedigree data of soybean varieties in Indonesia is still difficult to be traced. Soybean varieties genealogy is useful in recognizing the lineage of soybean varieties. It can simplify the process of determining varieties that will be used for soybean breeding. Graph based information visualization is used to represent the pedigree varieties. 121 varieties of soybean are represented by nodes. Moreover the relationship between varieties are represented by edges. A variety that produces many offspring is represented by size of node, while the plant breeding methods are represented by colors. This research applies Directed Acyclic Graph algorithm to clarify the form of the graph visualization by forming the edges to always point downwards. The visualization is implemented in a web based application where users can interact and explore the pedigree data to gain knowledge about soybean varieties pedigree.
Keyword: directed acyclic graph., soybean varieties pedigree, information visualization

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: Pemanasan sekunder plasma menggunakan gelombang mikro untuk reaksi fusi terkontrol
Abstrak: elah diteliti pengaruh pemanasan sekunder pada plasma dengan menggunakan gelombang mikro, yang dijalarkan tegak lurus dengan medan magnetik toroidal dalam tokamak. Didapat nilai numerik daya P =ψψm ≈ 1,305×10-15 W/m3 yang diserap oleh elektron per volume terhadap pemanasan sekunder menggunakan gelombang mikro yang penjalarannya tegak lurus dengan arah medan magnetik toroidal. Nilai yang kecil menunjukkan nilai rerata terhadap banyaknya partikel dalam plasma. Adapun diperolehnya nilai radius rm ≈ 1m yang mendapat nilai serapan terbesar menunjukkan bahwa pada lokasi tersebut terdapat sumbu magnetik, yang sebelumnya diasumsikan berada di pusat lingkaran penampang poloidal tokamak.
Keyword: sumbu magnetik, Gelombang mikro