Judul: Pengembangan Sistem Informasi Hama dan Penyakit Kedelai
Abstrak: Soybean is one of the commodities that is instrumental in food needs. However, Indonesia has not been able to fulfill its own need of soybean. Some problems faced by soybean farmers include the selection of good varieties, disruption of pest and diseases. Because of the limitations of experts to disseminate information about soybeans, it is necessary to build a system that can manage and store information so that the information can be easily accessed. To this end, we utilize the system development life cycle to develop information of soybean pests and diseases into an information system kedelai.ipb.ac.id. This method consists of five stages, namely: planning, analysis, design, implementation, and support. A Drupal core is used in the implementation of the information system in this research. The research result consists of two parts namely the information of pest and disease. The information of pest consists of the pest characteristics, indications, and controls. The disease information consists of disease characteristics, indications, and controls.
Keyword: Bogor Agricultural University (IPB), pests, diseases, soybean, information systems

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: Karakteristik Piezoelektrik Film LaxSr₁-xTiO3 di atas Substrat TCO
Abstrak: Studi material perovskite SrTiO3 sudah banyak dilakukan dan menunjukkan sifat feroelektrik, piezoelektrik, kuantum paraelektrik dan superkonduktor yang baik. Dengan penambahan dopant La2O3 diduga menambah performa sifat piezo dan karakteristik lainnya. Karakteristik film LaxSr₁-xTiO3 (LST) dengan variasi x= 0, 0.02, 0.04, 0.06 terbentuk pada suhu annealing 550 oC di atas substrat TCO melalui metode (Chemical Solution Deposition) CSD dan spin coating dengan 700 rpm pada kondisi suhu ruang dan tekanan atmosfer standar. Hasil menunjukkan, semakin banyak pendadah La maka nilai ketebalan film, ukuran rerata kristalit, parameter kisi, transmitansi, nilai konduktivitas (maksimum 589.7 S/cm pada sampel x=0.04 di frekuensi 10 Hz), nilai konstanta tegangan (c) dan muatan (d) piezo semakin meningkat. Dinamika bentuk grafik nilai tegangan (V) dan konstanta regangan mekanik (s) nampak mirip. Nilai V mencapai 0.127 V untuk x=0.06 (beban 50 g). Nilai maksimum c, d, s masing-masing mencapai 20.07 Vm/N, 1.14x10-8 C/N, 13642.71. Nilai band gap untuk x=0, 0.02, 0.04, 0.06 masing-masing 3.21 eV, 3.1 eV, 2.6 eV, 2.4 eV. La2O3 menambah performa sifat piezo, sehingga LST berpotensi sebagai sensor tekanan.
Keyword: CSD method, La2O3, LaxSr1-xTiO3, piezoelectric, TCO