Judul: Mutu dan Perdagangan Ikan Tuna Hasil Tangkapan Longline yang Didaratkan di PPS Nizam Zachman Jakarta
Abstrak: The purpose of this research was to identify the source of tuna supply in PPSNZJ Jakarta, related to price, quality, quantity, area of origin, and its trading system. This research used survey. Collected data consisted of primary and secondary data. Primary data were collected by sampling tally sheet when tuna were unloaded and observing unloading process. Fishing port which usually supply tuna to PPSNZJ are PPS Benoa Bali,PPN Palabuhanratu, PPS Cilacap. The quality grade of the exported fresh tuna were AAA, AAF, AF, AA, A and A, while for local tuna were B+, B, B-,reject/ C, Oba/D. Based on statistical tests, the relationship between amount and quality of the price, showed that it was very strong influence which made up 73,8% and the value of Sig F Change = 0.00 which mean that the effect of the independent variable (number and quality) was very significant on the dependent variable (price) because the value ranged from 0-0.05.
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Judul: Pengembangan fasilitas pps nizam zachman jakarta sebagai perikanan tuna di Jawa Bagian Barat
Abstrak: Indonesia is one of tuna exporters. World demand to fishery product of Indonesia especially tuna increases year by year. PPSNZJ is the biggest harbor in Indonesia and expected to be center of fishery product market especially tuna in Indonesia. This research aimed to analyse tuna production, analyse facility needs and decide the strategy of tuna industry development. Primary data were obtained from interview and secondary data were obtained from observation and literature. The result of this research were that production of tuna during 2008-2012 increased 34,28%. The amount of tuna which were imported from other places to PPSNZJ during 2008-2012 were 9,7 %. The export distribution were 64,49%, regional distribution were 45% and local distribution were 53,88%. From 2008 to 2012 tuna production rose in average 14,8% per year. The special facilities for tuna in PPSNZJ which needed to be repaired were TLC, wharf, ice factory and cold storage. The effort which needed to be made during developing of tuna industry in PPSNZJ were expanding market, increasing the quality of human resource and special facility of tuna and cooperating with foreign enterprise.
Keyword: facility., world trade, PPS Nizam Zachman Jakarta, tuna fishery

Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik