Judul: Pengaruh program motorisasi terhadap sosial ekonomi nelayan Desa Kilensari, Kabupaten Situbondo
Abstrak: Penelitian ini bertujuan untuk mengetahui sejauh mana pengaruh program motorisasi terhadap sosial ekonomi nelayan Desa Kilensari, Kabupaten Situbondo. Pengaruh program motorisasi terhadap sosial nelayan dibatasi pada masalah : (1) Perubahan status nelayan, dari nelayan pemilik menjadi nelayan buruh atau sebaliknya, (2) Sistem bagi hasil unit penangkapan payang, gill net dan pancing, (3) Perkembangan jumlah nelayan Desa Kilensari. Pengaruh program motorisasi terhadap ekonomi nelayan dibatasi pada masalah : (1) Produksi perikanan laut Desa Kilensari, (2) Pendapatan nelayan unit penangkapan payang, gill net dan pancing. Metoda penelitian yang dipakai adalah metoda survei. Pengumpulan data primer dilakukan melalui wawancara dengan nelayan responden yang diambil secara acak berstrata tidak sebanding. Data sekunder diambil dari lembaga dan dinas yang berhubungan dengan masalah yang diteliti. Data yang diperoleh dianalisa secara analisa tabulasi dan analisa regresi linear sederhana dengan model least square.
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Judul: Suatu Tinjauan Tentang Program Motorisasi di Desa Eretan Wetan Kabupaten Indramayu, Jawa Barat
Abstrak: Penelitian ini bertujuan untuk (1) melihat perbedaan pendapatan nelayan rata-rata per bulan antara unit penangkapan yang memakai motor dan unit penangkapan yang tidak memakai motor, (2) identifikasi nelayan yang dapat dipriorotaskan dalam program motorisasi dan (3) melihat kemungkinan pengembangan motorisasi selanjutnya. Penelitian ini merupakan studi kasus, dengan mengambil lokasi Desa Eretan Wetan Kabupaten Indramayu, Jawa Barat. Penelitian ini dilakukan selama bulan Juni 1982. Metode yang digunakan adalah metode survey. Tingkat motorisasi di Desa Eretan Wetan baru mencapai penggunaan motor tempel. Motorisasi mulai dirintis oleh Dinas Perikanan Indramayu sejak tahun 1979. Dalam perkembangannya motorisasi menga- Lami kemajuan yang pesat, terutama sejak realisasi kredit Pola Bimas pada tahun 1981. Pada tahun 1982 jumlah unit penangkapan ikan bermotor sudah mencapai 239 buah. Sejalan dengan pesatnya motorisasi, jumlah unit penangkapan tanpa motor yang aktif beroperasi menurun. Hal ini desebabkan unit yang tidak memakai motor tidak terpilih oleh nelayan buruh. Jumlah unit penangkapan tanpa motor pada tahun 1979 adalah 264 buah dan unit yang menggunakan motor 13 buah. Pada tahun 1982, unit penangkapan tanpa motor yang masih aktif beroperasi tinggal 115 buah dan unit penangkapan yang menggunakan motor menjadi 239 buah. ...
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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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