Judul: Analisis Kebutuhan Air dan Kelebihan Air Hasil Konsolidasi di Balai Besar Penelitian Tanaman Padi Sukamandi.
Abstrak: Water balance is the balance of the input and output of water somewhere at a certain period, so it can be to determine the amount of the excess or shortage of water. This study aimed to analyze the flow of water and the excess water needs that occur at BBPTP. The procedure consisted of field studies, literature review and data analysis. Based on the analysis, the direction of water flow in the area around the research flowing to the south where there is a Cijengkol river downstream water flow. Based on the analysis of the water needs of the consolidation that has been done can be concluded highest evapotranspiration values occurred in October that is 7.13 mm/day. The highest value of water demand in October is 2.10 lt/sec/ha. The maximum irrigation discharge occurs in the irrigation channel number 7 is 28.01 lt/sec with 13.34 ha area. Based on the analysis of rainfall can be summed value maximum daily rainfall for the area of research at the Center for Rice Research amounted to 76.25 mm with a return period of 2 years and Gumbel distribution. The maximum effluent discharge occurs in the drainage channel number 88 is 117.30 lt / sec with 14.15 ha area.
Keyword: discharge of irigation, effluent discharge, evapotranspiration, rainfall

Judul: Analisis Kebutuhan Irigasi Padi Berdasarkan Metode KP-01 dan CROPWAT 8
Abstrak: There are two different methods for determining irrigation water requirement for paddy, KP-01 and CROPWAT 8, by using climate data. The object of this research was irrigation water requirement. The purpose of this research was to analyse paddy irrigation requirement based on KP-01 method and CROPWAT 8. Those methods have different criterias to determine irrigation water requirement. That can be shown from parameters used such as reference crop evapotranspiration (ETo), effective rainfall, land preparation, crop coefficient and physical soil data. According to the two methods, the average ETo value in KP-01 method was higher than in Penman-Monteith method (CROPWAT 8), 123.61%. Ratio of effective rainfall percentage KP-01 to CROPWAT 8 was 42.91%. Water requirement for land preparation using CROPWAT 8 was calculated from the water requirement during scheduling pre puddling and puddling, while KP-01 used a method developed by Van de Goor and Zijlstra. Water requirement for land preparation using CROPWAT 8 method was larger than KP-01. Paddy irrigation water requirement from CROPWAT 8 calculation was generally lower than that of KP-01, because the effective rainfall (in CROPWAT 8) have fulfilled crop water requirement.
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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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