Judul: Analisa pendapatan migran dari desa ke kota dan analisa faktor-faktor yang berpengaruh terhadap peluang bermigrasi
Abstrak: Jumlah angkatan kerja yang meningkat setiap tahun dan tidak dibarengi dengan kesempatan kerja yang memadai menimbulkan masalah yang cukup serius . Sektor pertanian yang pada masa-masa sebelumnya mampu rnenampung tenaga kerja cukup besar , sekarang semakin berkurang kemampuannya karena tekanan penduduk terutama di pulau Jawa. Sehingga banyak tenaga kerja mencari pekerjaan disektor non pertanian yang kebanyakan tersedia dikota . Akibatnya urbanisasi semakin meningkat yang dikhawatirkan akan menimbulkan pengangguran dikota karena terbatasnya daya tampung dan berkurangnya surnber daya manusia di desa yang penting bagi perkembangan desa .
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Judul: Migrasi Langsung dan Bertahap, Keuntungan dan Kerugian (Studi Kasus Kelurahan Bukti Duri, Kecamatan Tebet, Jakarta Selatan dan Kelurahan Sukasari, Kecamatan Tanggerang, Kota Administratif Tanggerang)
Abstrak: Pertumbuhan angkatan kerja yang tinggi di desa dengan lapangan kerja yang relatif tetap membuat perekonomian desa menjadi lambat. Masuknya teknologi ke desa membuat tenaga kerja desa tergeser dari sektor pertanian keluar pertanian. Ketidak siapan sektor non pertanian desa dalam menampung kelebihan angkatan kerja menyebabkan penduduk desa harus bermigrasi untuk mempertahankan kehidupan keluarganya. Miqran dalam praktek lapang ini mempunyai ciri-ciri: Usia muda, sebagian besar telah menikah dan mempunyai tanggungan, berlahan sempit, pekerjaan di tempat asal bertani dan rata-rata telah tinqgal dilokasi 1-5 tahun. Migran ini berasal dari propinsi yang ada dipulau Jawa.
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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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