Judul: Interaksi Sosial Antara Nelayan dengan Toke di Tangkahan Kecamatan Babalan Kabupaten Langkat Sumatera Utara.
Abstrak: Tangkahan merupakan tempat berlabuhnya kapal-kapal ikan dan pendaratan hasil tangkapan yang didirikan oleh swasta dan digunakan sebagai tempat pemasaran dan distribusi hasil perikanan. Fasilitas dan aktifitas yang ada di tangkahan sama seperti yang ada di pelabuhan perikanan. Seluruh usaha perikanan tangkap di Kecamatan Babalan berlangsung di tangkahan. Interaksi yang terjadi antara nelayan dengan toke sebagai pemilik tangkahan menyebabkan terjadinya hubungan patron-klien atau ketergantungan antara nelayan dengan toke. Penelitian ini bertujuan untuk mengukur interaksi sosial, faktor penentu terjadinya hubungan patron-klien, dan hubungan tingkat interaksi dengan tingkat pendapatan nelayan di tangkahan. Metode penelitian ini menggunakan studi kasus dan teknik pengambilan sampel dilakukan menggunakan Purposive Sampling. Hasil penelitian menunjukkan bahwa tingkat interaksi dari aspek ekonomi tergolong dalam kategori sering dengan nilai sebesar 21,09 dan tingkat interaksi dari aspek non-ekonomi tergolong dalam kategori jarang dengan nilai sebesar 16,93. Faktor yang paling menentukan terjadinya hubungan patron-klien di tangkahan adalah biaya operasional penangkapan dan pemasaran hasil tangkapan. Selain itu program jaminan kesehatan pemerintah sedikit merubah pola ketergantungan nelayan dalam jaminan kesehatan yang selama ini bergantung pada pinjaman dari toke. Hubungan tingkat interaksi dengan tingkat pendapatan memiliki hubungan yang lemah dengan nilai 0,18.
Keyword: interaksi sosial, Kecamatan Babalan, patron-klien, Tangkahan, toke

Judul: Pengaruh ikatan patron-klien terhadap perilaku nelayan dalam pemasaran hasil tangkapan (Kasus: Desa Tanjung Pasir, Kecamatan Teluknaga, Kabupaten Tangerang, Provinsi Banten)
Abstrak: This paper focuses on the effect of patron-client ties to the behavior of fishermen in marketing the catch: Case Tanjung Pasir Village, Teluknaga Subdistrict, Tangerang District, Banten Province. The purpose of this study is to: (1) identify the level of financial dependence in patron-client ties, (2) determine the behavior of fishermen in marketing the catch, and (3) analyze the influence of patron-client ties to the behavior of fishermen in the marketing of the catch. The results showed that: (1) there is a relationship between the level of fishers’ education and the level of their financial dependence on patron-client ties, (2) there is a relationship between the level of fishers’ income and the level of financial dependence on patron-client ties, (3) there is a relationship between the type of fishing gear and the level of financial dependence on patron-client ties, (4) there is a relationship between the level of financial dependence and the behavior of fishermen in marketing the catch, and (5) there is a relationship between the perceptions about fish auction place condition and the behavior of fishermen in marketing the catch.
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Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera