Judul: Analisis Strategi dan Kerentanan Nafkah Rumah Tangga Nelayan di Kawasan Ekowisata.
Abstrak: Kawasan ekowisata yang berada di Nagari Mandeh Kabupaten Pesisir Selatan membagi dua jenis rumah tangga nelayan berdasarkan sumber nafkahnya, yaitu rumah tangga nelayan penuh dan rumah tangga nelayan ekowisata. Tujuan dari penulisan ini adalah untuk mengidentifikasi sistem nafkah, strategi nafkah serta modal nafkah yang dilakukan oleh rumah tangga nelayan serta menganalisis hubungan strategi nafkah dengan kerentanan nafkah yang dialami oleh rumah tangga nelayan. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif yang didukung oleh data kualitatif. Hasil dari penelitian ini menunjukkan dua jenis rumah tangga nelayan di Nagari Mandeh memiliki strategi nafkah dan tingkat kerentanan yang berbeda. Rumah tangga nelayan penuh lebih rentan di bandingkan dengan rumah tangga nelayan ekowisata. Hal ini karena sistem modal nafkah yang dimiliki rumah tangga nelayan penuh tidak mampu dimanfaatkan secara optimal serta strategi nafkah yang tidak beragam yang dimiliki oleh rumah tangga nelayan penuh di bandingkan rumah tangga ekowisata.
Keyword: Kerentanan nafkah, Rumah tangga nelayan, Strategi nafkah

Judul: Analisis Strategi dan Kerentanan Nafkah Rumah Tangga Petani Karet (Studi Kasus: Nagori Pematang Dolok Kahean, Kecamatan Tapian Dolok, Kabupaten Simalungun, Provinsi Sumatera Utara).
Abstrak: Karet merupakan salah satu komoditas penting perkebunan karena mampu memberikan kontribusi dalam upaya peningkatan devisa negara. Karet sebagai sumber penghasilan petani mendapatkan berbagai tekanan dari berbagai faktor seperti faktor ekonomi, faktor alam dan faktor sosial sehingga mengakibatkan kerentanan. Penelitian ini bertujuan untuk menganalisis struktur, strategi dan kerentanan nafkah rumah tangga petani karet. Metode yang digunakan dalam penelitian ini menggunakan pendekatan kuantitatif menggunakan kuesioner yang didukung oleh pendekatan kualitatif melalui wawancara mendalam. Responden pada penelitian sebanyak 30 rumah tangga petani yang didapatkan melalui teknik sampel acak sederhana. Hasil penelitian ini diolah melalui analisis deskriptif tabulasi silang melalui SPSS 23. Hasil penelitian menunjukkan bahwa strategi nafkah yang diterapkan oleh rumah tangga petani karet memiliki hubungan yang negatif terhadap tingkat kerentanan.
Keyword: kerentanan, modal nafkah, karet, strategi nafkah

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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