Judul: Role Of Leadership In fishing Community Resilience Toward Marine Ecosystem Damage
Abstrak: Kerusakan ekosistem laut akibat iklim dan aktivitas manusia membawa dampak rusaknya habitat ikan dan punahnya beberapa jenis ikan. Masyarakat nelayan merupakan komunitas yang paling merasakan dampaknya karena menurunnya pendapatan dan produktivitas tangkapan mereka. Tujuan dari penelitian ini adalah menganalisis peranan kepemimpinan pada resiliensi komunitas di Desa Bangsring Kabupaten Banyuwangi. Metode yang digunakan adalah pendekatan kuantitatif dengan metode survey. Pengumpulan data dilakukan secara online disebabkan situasi pandemi virus corona. Pemilihan responden dilakukan secara accidental sampling dengan jumlah responden sebanyak 30 orang. Hasil penelitian menunjukkan bahwa peran kepemimpinan dalam melakukan perencanaan, komunikasi, pengambilan keputusan dan membangun kerjasama mampu membangun aksi kolektif komunitas nelayan dalam mengatasi kerusakan ekosistem laut. Berbagai aksi kolektif yang dilakukan menghasilkan resiliensi komunitas pada bidang sosial,ekonomi dan infrastruktur., Damage to marine ecosystems due to climate and human activities has resulted in the destruction of fish habitats and the extinction of several types of fish. The fishing community is the community that feels the most impact because of the decreased income and productivity of their catch. The purpose of this study was to analyze the role of leadership in communities affected by the disaster of marine ecosystem damage in Bangsring Village, Banyuwangi Regency. The method used is a quantitative approach with a survey method. Data collection was carried out online due to the corona virus pandemic situation. The selection of respondents was done by accidental sampling with a total of 30 respondents. The results showed that the role of leadership in planning, communication, decision making and building cooperation was able to build collective action of fishing communities in overcoming damage to marine ecosystems. The various collective actions taken have resulted in community resilience in the social, economic and infrastructure fields.
Keyword: Leadership, Community resilience, Disaster

Judul: Resiliensi komunitas nelayan pada musim paceklik ikan (Kasus: Kampung Muara Angke, Kecamatan Penjaringan, Jakarta Utara)
Abstrak: Bencana musim paceklik ikan menciptakan kerentanan pada nelayan. Nelayan melakukan strategi adaptasi dalam komunitasnya untuk beresiliensi. Penelitian ini bertujuan untuk menganalisis resiliensi komunitas nelayan pada musim paceklik ikan. Pendekatan yang digunakan dalam penelitian ini adalah kuantitatif dan kualitatif. Hasil penelitian menunjukkan bahwa kerentanan yang tinggi komunitas pada musim paceklik ikan. Kerentanan diukur melalui keterpaparan dan sensitivitas musim paceklik ikan. Kapasitas adaptasi komunitas tinggi dengan mengandalkan faktor-faktor kohesivitas komunitas, kepemimpinan, sumberdaya komunitas, dan jaringan sosial. Bentuk-bentuk adaptasi tergolong banyak yang dilakukan dengan penguatan norma, perubahan gaya hidup, perubahan pekerjaan, dan perubahan praktik melaut. Hubungan antara kapasitas komunitas dan bentuk-bentuk komunitas yaitu mendukung resiliensi komunitas sebagai mekanisme adaptasi dari musim paceklik ikan. Resiliensi komunitas tergolong baik karena komunitas dapat memenuhi kebutuhan pokok yakni pangan dan kesehatan.
Keyword: bad season fish, resilience, community, fisherman

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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