Judul: Analisis ketenagakerjaan dalam kaitannya dengan status ketersediaan sumber perikanan lemuru di Selat Bali: kasus di Muncar
Abstrak: Suatu survai masalah ketenagakerjaan dari usaha penangkapan ikan lemuru di Muncar, yang dikaitkan dengan status ketersediaan sumberdayanya yang bersifat musiman dan telah mengalami kondisi lebih tangkap (over fishing). Tujuan penelitian ini adalah untuk mempelajari sifat hubungan status/dinamika ketersediaan sumber lemuru (sifat "seassonal" dan "over fishing") terhadap beberapa aspek ketenagakerjaan dan faktor-faktor yang mempengaruhi tingkat produktivitas usaha penangkapannya. Selanjutnya apakah dengan penguasaan teknologi maju (purse seine) yang bersifat padat karya, masih mampu memberikan pendapatan usaha dan penghasilan yang layak kepada tenaga kerja nelayan walaupun di lain fihak "lebih tangkap" ("over fishing") ? status sumberdaya telah Untuk menerapkan konsep hubungan fungsional sistim antara sosial dan sistim ekologi (ekosistim), strategi pendekatan masalah mengacu pada konsep "culture core" (Steward, 1968). Tingkat keeratan hubungan dianalisis dengan analisis statistika, pemakaian bagan alir (flow chart) serta penjelasan fakta sosial dari pengamatan lapangan, ...
Keyword: 

Judul: Analisis bioekonomi pengusahaan sumberdaya ikan lemuru ( Sardinella longiceps) di Perairan Selat Bali
Abstrak: Pemilihan Selat Bali sebagai tempat penelitian didasarkan atas indikasi pernah terjadinya biological overfishing dalam pengusahaan sumberdaya perikanan lemuru (Sardinella longiceps) sebagaimana dilaporkan oleh Sujastani dan Nurhakim (1982). Penelitian ini merupakan survei tentang aspek biologi dan ekonomi yang memnpengaruhi perikanan tangkap, khususnya dalam kegiatan penangkapan ikan lemuru (Sardinella longiceps) di Perairan Selat Bali, dengan tujuan optimalisasi pengusahaan sumberdaya secara lestari dan berkelanjutan. Data yang digunakan dalam penelitian ini mencakup data hasil tangkapan ikan lemuru (Sardinella longiceps) dan jumlah trip armada purse seine dalam periode 1989 - 1997, harga rata-rata tahunan ikan lemuru (Sardinella longiceps) dan biaya prlangkapan per trip upaya dalam periode 1995 - 1999.
Keyword: 

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
Keyword: