Judul: Independent Fish Auction at Nusantara Karangantu Fishing Port Serang Banten
Abstrak: Pelelangan merupakan kegiatan pemasaran yang mempertemukan penjual dan pembeli, dalam hal ini penjual diwakili oleh juru lelang. Pelelangan ikan juga mempertemukan penjual dan pembeli di tempat pelelangan ikan (TPI). Pelelangan ikan di Pelabuhan Perikanan Karangantu dilakukan secara mandiri antara penjual dan pembeli. Harga hasil tangkapan ditentukan oleh penjual mengacu pada harga sebelumnya. Bagan perahu merupakan salah satu Jenis alat tangkap ikan yang termasuk dalam klasifikasi jaring angkat dari jenis bagan yang digunakan nelayan untuk menangkap ikan pelagis kecil. Kapal bagan perahu satu-satunya kapal nelayan yang melakukan pelelangan di PPN Karangantu. Penelitian ini bertujuan untuk mendeskripsikan mekanisme dan sistem pelelangan ikan mandiri serta menganalisis relasi dan nilai sosial jaringan pemasaran antar pelaku yang terlibat dalam pelelangan ikan PPN Karangantu. Metode penelitian yang digunakan yaitu observasi lapangan dengan cara pengamatan secara langsung lokasi penelitian. Hasil penelitian ini menunjukkan mekanisme pelelangan mandiri PPN Karangantu dan hasil tangkapan bagan perahu. Pelaku yang terlibat dalam kegiatan pelelangan ikan mandiri terdiri dari nelayan, pemodal (pemilik kapal), dan bakul. Pemodal (pemilik kapal) menjadi lembaga pemasaran yang paling dominan dan paling berpengaruh dalam saluran pemasaran.
Keyword: Bagan Perahu, Hubungan Sosial, Mekanisme Pelelangan Ikan

Judul: Kajian Pelelangan Ikan dan Pendapatan Nelayan Jaring Cumi-cumi di PPI Muara Angke Jakarta
Abstrak: Pelelangan ikan merupakan salah satu aktivitas ekonomi di pelabuhan perikanan yang memberikan keuntungan bagi penjual dan pembeli. Pelelangan ikan berhubungan dengan pendapatan nelayan karena proses pelelangan akan menghasilkan harga jual/beli yang layak di TPI. Tujuan penelitian ini adalah mengetahui bentuk hubungan kuantitatif antara pelelangan ikan dan pendapatan nelayan jaring cumi-cumi dan mengetahui persepsi nelayan terhadap pelelangan ikan dan di PPI Muara Angke.. Dengan menggunakan analisis regresi dan korelasi linear sederhana didapatkan bentuk hubungan antara pendapatan bersih nakhoda per trip dan nilai penjualan per trip adalah Y=0,0833X-3.830.119 dengan nilai r=0,83, pendapatan bersih nakhoda per hari dan nilai penjualan per hari Y=0,1227X-245.858 dengan nilai r=0,91, dan pendapatan bersih nakhoda per trip dan rata-rata harga untuk satu trip penangkapan dengan nilai r=0,31. Hasil penelitian menunjukkan bahwa persepsi sebagian besar nelayan menjual hasil tangkapan melalui pelelangan ikan adalah karena nelayan tidak perlu lagi mencari-cari pembeli (34,4%) dan nelayan mendapatkan kepastian akan adanya transaksi (28,1%).
Keyword: Fish auction, Fishermen revenue, PPI Muara Angke, Squid nets, Fishing ports, Squid fishing, Regression analysis, Linear correlation, Net income

Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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