Judul: Pendugaan Produktivitas Tanaman Padi Pada Kondisi ENSO di Kabupaten Karawang (Studi Kasus: Kecamatan Rawamerta dan Tegalwaru).
Abstrak: Curah hujan di Indonesia dipengaruhi oleh aktivitas lautan dan atmosfer. Besarnya curah hujan berhubungan dengan terpenuhinya kebutuhan tanaman dalam proses pertumbuhan dan perkembangan sehingga mempengaruhi peningkatan maupun penurunan hasil produksi padi. Fenomena ENSO (El-Nino Southern Oscillation) memiliki andil yang besar dalam variabilitas curah hujan pada daerah Monsoon, khususnya di Kabupaten Karawang. Tujuan penelitian ini yaitu menganalisis curah hujan saat kondisi ENSO serta menduga produktivitas padi saat kondisi ENSO di Kecamatan Rawamerta dan Tegalwaru menggunakan model simulasi DSSAT (Decision Support System for Agrotechnology Transfer). Kondisi El-Nino tahun 2015 memiliki nilai tertinggi untuk total curah hujan selama empat bulan dibandingkan dengan kondisi Normal tahun 2012 dan La-Nina tahun 2010. Kondisi El-Nino tahun 2015 dan La-Nina tahun 2010 tidak terlalu mempengaruhi produksi padi selama setahun di Kabupaten Karawang, khususnya Kecamatan Rawamerta dan Tegalwaru. Frekuensi panen terendah (3 kali panen/tahun) terjadi pada kondisi Normal tahun 2012 pada Kecamatan Rawamerta dengan rata-rata produktivitas hasil simulasi sebesar 6283 kg/ha, sedangkan frekuensi panen tertinggi (6 kali panen/tahun) terjadi pada kondisi El-Nino tahun 2015 pada Kecamatan Rawamerta dengan rata-rata produktivitas hasil simulasi sebesar 6675.8 kg/ha.
Keyword: DSSAT, ENSO, NASA POWER

Judul: Analisis Dampak ENSO (El-Nino Southern Oscillation) Terhadap Tingkat Kekeringan Untuk Tanaman Pangan dan Palawija (Studi Kasus : Sulawesi Selatan)
Abstrak: Climate and weather variability is a condition of long-term climate change is marked by fluctuations and deviations from normal conditions. One reason is the ENSO (El-Nino Southern Oscillation) which affects the drought. This research was conducted with the aim to determine and analyze the level of drought in South Sulawesi due to the influence of ENSO and compare the production of food crops and crops in a normal year and ENSO. Drought index is calculated based on the Palmer method by using rainfall data, air temperature and soil humidity as inputs. Based on the drought index calculated using the Palmer method, areas with monsoon rain patterns have a range of values between -22.71 to dryness 18.23, equatorial patterns ranged from -4.03 to 5.07, and the local patterns ranged from -8.57 to 10.07. Verification test results of the drought index of crop production data show that each ENSO event is always followed by a decline in rice production, especially of rice fields. As for crops, crop production generally tended to increase in every ENSO event because most crops are plants that are resistant to drought, particularly local varieties that have adapted well to its environment. Thus, the influence of ENSO drought can affect the production of food crops and crops.
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Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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