Judul: Faktor-faktor yang mempengaruhi mihrasi kerja nelayan ke non nelayan di Muara Angke, kelurahan Pluit, kecamatan Penjaring, Jakarta Utara
Abstrak: Migrasi kerja nelayan dilakukan sebagai respon nelayan atau kelompok nelayan karena kurang terpenuhinya berbagai kebutuhan seperti papan, pangan, sandang, dan pendidikan. Nelayan adalah tenaga kerja yang pekerjaannya menangkap ikan, baik sebagian langsung (seperti para penebar dan penarik jaring), maupun secara tidak langsung (seperti juru mudi perahu layar, nahkoda kapal ikan bermotor, ahli mesin kapal juru masak kapal penangkap ikan, termasuk juragan kapal yang ikut melaut) di perairan Teluk Jakarta sampai ke Kepulauan Seribu.
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Judul: Faktor- Faktor yang Mempengaruhi Keputusan Migrasi Nelayan ke Muara Angke, DKI Jakarta
Abstrak: Tingkat sosial ekonomi yang rendah merupakan ciri umum kehidupan nelayan. Perangkap kemiskinan yang melanda kehidupan nelayan disebabkan oleh faktor - faktor yang kompleks. Untuk mengatasi tekanan - tekanan sosial ekonomi tersebut, telah menumbuhkan sejumlah potensi kreatif di kalangan masyarakat nelayan untuk memenuhi kebutuhan hidupnya, diantaranya dengan melakukan diversifikasl pekerjaan atau bermigrasi ke daerah lain. Migrasi yang dilakukan netayan terutama dimotivasi untuk memenuhi kebutuhan ekonomi, yaitu memperoleh penghasilan yang tinggi serta untuk memenuhi kebutuhan hidup kekuarganya. Penelitian ini bertujuan untuk mengetahui karakteristik nelayan migran di Muara Angke dan faktor - faktor yang mempengaruhi keputusan nelayan untuk melakukan migrasi. Hasil penelitian menunjukkan bahwa faktor -faktor yang mempengaruhi keputusan nelayan untuk melakukan migrasi ke Muara Angke adalah pendapatan yang rendah, disebabkan oleh keterbatasan dan tekanan lingkungan di daerah asal masing - masing. Faktor yang menarik nelayan untuk memilih Muara Angke sebagai daerah tujuan, terdiri dari tersedianya kesempatan bekerja dan berwirausaha, keadaan lingkungan yang ramai penduduk, aksesibilitas yang mudah dalam menjangkau wilayah lain di Jakarta, kemudahan memasarkan hasil perikanan yang didukung letak TPI dan pasar ikan yang dekat, serta kondisi alam yang sesuai untuk nelayan tradisional, dikarenakan ombak yang tidak terlalu besar dan wilayah penangkapan yang tidak jauh.
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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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