Judul: Estimation of Exhaust Gas Emissions of Longline Vessels 51-100 GT at Nizam Zachman Oceanic Fishing Port
Abstrak: Peningkatan emisi gas buang kapal longline, menimbulkan dampak jangka panjang seperti peningkatan suhu bumi dan penurunan hasil tangkapan. Tindakan pengendalian perlu dilakukan dengan mengelola konsumsi BBM agar lebih efisien. Upaya tersebut dapat dilakukan dengan mengetahui informasi status emisi gas buang kapal longline saat ini. Namun, nilai tersebut belum diketahui sehingga penelitian ini dilakukan dengan tujuan mengestimasi emisi gas buang kapal longline dengan menghitung konsumsi BBMnya serta FUI per produksi ikan. Penelitian ini dilakukan di PPS Nizam Zachman sebagai homebase kapal longline. Kapal longline berukuran 51-100 GT mendominasi di pelabuhan tersebut. Metode pengumpulan data menggunakan studi pustaka dan wawancara. Data penelitian kemudian dianalisis dengan metode analisis deskriptif kuantitatif. Hasil penelitian ini menjelaskan bahwa rata-rata konsumsi BBM kapal longline sebesar 179 ton per kapal, nilai tersebut telah melebihi kuota subsidi sebesar 21,5 ton per kapal. Emisi gas buang CO, NOx, SOx, dan PM berturut turut sebesar 1.321 kg, 1.946 kg, 3.393 kg, dan 54 kg. Konsumsi BBM yang tinggi menyebabkan emisi gas buang yang tinggi pula. Berdasarkan data tersebut diketahui nilai FUI kapal longline relatif tinggi jika dibandingkan dengan nilai FUI dunia, hal tersebut karena adanya ketidaksesuaian data statistik hasil tangkapan. Hal tersebut menyatakan bahwa konsumsi BBM operasi kapal longline tidak efisien., The increase of exhaust emissions by longlines, has long-term impacts such as increasing global temperatures and decreasing catches. Hence, actions are necessary through managing fuel consumption. As a consequence, the value of exhaust emissions by longline vessels is needed. However, only little information was found, therefore this research was intended to estimate exhaust emissions of longline vessels by calculating their fuel consumption. The result was also presented in FUI per fish production. This research was conducted at Nizam Zachman Oceanic Fishing Port, focusing on longline vessels between 51-100 GT, which major in the port. Data were collected through literature study and interviews. Then data were analyzed by quantitative descriptive analysis method. Results showed that the average fuel consumption is 179 tons per vessel, this value has exceeded the subsidy quota limited to 21.5 tons per vessel. The CO, NOx, SOx, and PM emissions were 1.321, 1.946, 3.393, and 54 in kg. This significant fuel consumption has caused high exhaust emissions as well. Furthermore, due to inaccuracy issues found in statistical reports, the FUI of longline is remarkably higher when compared to the world FUI for a similar group. Accordingly, this research concludes that the longline vessels operation was fuel inefficient.
Keyword: gas emissions, fuel consumptions, longline, FUI, environment

Judul: Estimation of Waste and Exhaust Gas Emissions for Troll Line at the Palabuhanratu Fishing Port
Abstrak: Mengacu pada Permen Kelautan dan Perikanan No. 3 Tahun 2013 Tentang Kesyahbandaran di Pelabuhan Perikanan, maka PPN Palabuhanratu memiliki kewajiban melakukan pencegahan pencemaran dari kapal yang dapat dilakukan dengan menampung limbah, yang dihasilkan dari kapal dan membuangnya di tempat yang telah disediakan oleh pelabuhan. Pelabuhan perlu melakukan estimasi jumlah limbah dan emisi gas buang kapal untuk dapat menjalankan fungsi tersebut. Salah satu kapal perikanan yang aktif beroperasi di PPN Palabuhanratu adalah kapal pancing tonda dan informasi mengenai limbah dari kapal tersebut masih terbatas. Oleh karena itu, penelitian ini dilakukan dengan tujuan mengestimasi jumlah limbah dan emisi gas buang kapal tersebut. Data penelitian dikumpulkan melalui wawancara dengan lima nelayan yang berkerja pada lima kapal yang berbeda serta studi pustaka. Selanjutnya, data dianalisis dengan metode analisis deskriptif kuantitatif. Hasil penelitian ini menunjukkan bahwa jumlah rata-rata produksi kapal tonda sebesar 486 kg per trip. Limbah yang dihasilkan kapal tonda per nilai produksi rata-rata sebesar 0,005 kg. Konsumsi BBM kapal tonda rata-rata sebesar 340 kg per trip. Nilai rata-rata emisi yang dihasilkan per nilai produksi, yaitu polutan CO sebesar 5,39 kg, NOx sebesar 7,93 kg, SOx sebesar 13,83 kg, dan PM sebesar 0,22 kg., According to the Ministry of Maritime and Fisheries Regulation No. 3 of 2013 concerning the Port Authority at Fishing Port, Palabuhanratu Fishing Port is responsible for preventing pollution from fishing vessels which can be done by managing waste generated from the vessels and providing waste treatment facilities. Accordingly, the port needs to estimate the amount of waste and exhaust emissions from vessels. One of the fishing vessels actively operating at Palabuhanratu Fishing Port is troll liners, and information about waste from those vessels is still limited. Therefore, this research was conducted to estimate the amount of waste and exhaust emissions of the troll liners. Collected data through interviews with 5 fishermen working on 5 different vessels and a literature study. Furthermore, the data were analyzed by the quantitative descriptive analysis method. Results showed that the average of troll liner production is 486 kg per trip. The average value of the waste generated by the troll liner per production value is 0.005 kg. The average fuel consumption of the troll liner is 340 kg per trip. The resulting emission average values per production value are CO pollutant of 5.39 kg, NOx of 7.93 kg, SOx of 13.83 kg, and PM of 0.22 kg.
Keyword: fuel consumptions, gas emissions, pollution, ship waste, troll line

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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