Judul: Kepemimpin Suku dalam Pemerintahan Desa: Studi Kasus pada Masyarakat Suku Ekagi di Desa Mauwa, Kecamatan Kamu, Kabupaten Daerah Tingkat II Paniai Propinsi Daerah Tingkat I Irian Jaya
Abstrak: Penelitian ini bertujuan untuk mempelajari ikatan sosial dalam masyarakat suku, baik ikatan sosial di antara anggota masyarakat sesuku, di antara suku yang berbeda maupun ikatan administrasi pemerintah nasional serta kepemimpinan di dalam masing-masing unit sosial yang terbentuk berdasarkan ikatan sosial tersebut.
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Judul: Studi tata letak kebun masyarakat ekagi sebagai tahap awal perencanaan lansekap pertanian : Kasus Desa Mauwa, Kec. Kamu Irian Jaya
Abstrak: Pada saat ini terdapat 2 tipe kebun yang umum dibuat oleh masyarakat Ekagi, yaitu kebun dengan sistem intensif di dasar lembah (bugi) dan kebun dengan sistem ekstensif di hutan di lereng-lereng gunung (bugua bugi). Kedua ke- bun tersebut dibedakan berdasarkan letak dan sistem pertanian yang digunakan. Kebun-kebun masyarakat Ekagi memiliki 2 pola yang berbeda yitu pola grid (grid pat- tern) dan pola tidak teratur (mixed pattern). Faktor- faktor yang mempengaruhi penggunaan kedua pola tersebut adalah faktor kesuburan tanah, kestabilan produksi dan gangguan fisik pada kebun berupa genangan air di musim hujan. Faktor-faktor utama yang menjadi bahan pertimbangan masyarakat Ekagi dalam menentukan letak kebun saat ini, dalam urutan prioritasnya adalah: faktor pemilikan tanah, kepercayaan adat, jarak, kesuburan tanah dan kemudahan pembukaan kebun. Dengan uji Chi-square diketahui bahwa perbedaan umur dan tingkat pendidikan formal responden tidak nyata pengaruhnya dalam pemilihan faktor pertim- bangan pemilihan lokasi kebun oleh responden. Dalam lingkungan kehidupan masyarakat Ekagi masih banyak dijumpai masalah yang perlu dipecahkan dan potensi yang dapat digali dan dimanfaatkan. Masalah dan potensi ini meliputi bidang fisik, sosial, ekonomi dan teknis, yang satu sama lain saling berhubungan dan dalam pe- nanganannya diperlukan keterpaduan. Dalam penyelesaian seluruh masalah, perlu dimasukkan aturan adat dan keper- cayaan yang dimiliki masyarakat Ekagi sebagai bahan. pertimbangan…dst
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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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