Judul: Analysis of Protected Area Management Practices in Padang  City: A Case Study of Lubuk Minturun
Abstrak: Praktik pengelolaan lubuk larangan di Lubuk Minturun dilakukan oleh kelompok pemuda yang tidak memiliki struktur organisasi yang jelas ataupun berbadan hukum serta tanpa adanya rencana pengelolaan yang jelas. Pemerintah daerah Kecamatan Koto Tangah tidak melakukan fungsi pengawasan dan penegakan hukum yang konsisten sehingga praktik pengelolaan berjalan tanpa pengawasan dan kendali yang baik. Penelitian ini bertujuan menganalisis kelemahan dan kekuatan praktik pengelolaan lubuk larangan yang diterapkan di Lubuk Minturun dan memberikan rekomendasi rencana aksi perbaikan dan penguatan pada sistem pengelolaan yang berlangsung saat ini. Penelitian berupa studi kasus dilakukan dengan studi pustaka serta pendekatan kualitatif melalui pengamatan langsung dan wawancara terhadap kelompok pemuda, niniak mamak, dan pihak kelurahan. Praktik pengelolaan lubuk larangan pada aspek pengetahuan faktual dan pengetahuan prosedural pengelolaan perikanan berkelanjutan merujuk pada kategori kekuatan yaitu sumberdaya dan ekosistem serta sosial dan ekonomi. Kategori kelemahan yaitu kategori kelembagaan serta perencanaan dan tata kelola. Rekomendasi penguatan praktik lubuk larangan yang dapat dilakukan diantaranya, pembentukan program edukasi yang baik mengenai sumberdaya perikanan yang ada, pendampingan dan pembentukan sistem pemantauan, pengaturan, dan pengawasan berbasis riset dengan mempertimbangkan masukan berkala dari berbagai pihak khususnya dari kelompok pemuda, niniak mamak, pihak kelurahan dan dinas perikanan dan kelautan. Kata kunci: analisis kelemahan dan kekuatan, lubuk larangan, Lubuk Minturun, pengetahuan faktual, pengetahuan prosedural, The practice of managing protected area in Lubuk Minturun is carried out by a group of youth who do not have a clear organizational structure or legal entity and without a clear management plan. The local government of Koto Tangah District does not carry out consistent supervisory and law enforcement functions, so management practices run without good supervision and control. This study aims to analyze the weaknesses and strengths of the protected area management practices implemented in Lubuk Minturun and provide recommendations for improvement and strengthening action plans for the current management system. The research in the form of a case study was carried out with a literature study and a qualitative approach through direct observation and interviews with youth groups, ninik mamak, and village officials. The practice of managing the pit of the prohibition the aspect of factual knowledge and procedural knowledge of sustainable fisheries management refers to the category of strengths, namely resources and ecosystems, as well as social and economic. Weakness categories are institutional categories as well as planning and governance. Recommendations for strengthening the practice of lubuk prohibition that can be carried out include the establishment of an excellent educational program regarding existing fishery resources, assistance and establishment of a research-based monitoring, regulation, and supervision system by considering periodic input from various parties, especially from youth groups, ninik mamak, village officials, and the department of fisheries and marine affairs. Keywords: analysis of weaknesses and strengths, factual knowledge, lubuk minturun, protected area, ,factual knowledge, procedural knowledg
Keyword: analysis of weaknesses and strengths, lubuk minturun, protected area, factual knowledge, procedural knowledge

Judul: Analisis Peran Kelembagaan Ekonomi Lokal terhadap Pemanfaatan Perairan dalam Pengelolaan Ikan Larangan (Studi Kasus Ikan Larangan Desa Sungai Pasak Kota Pariaman)
Abstrak: This research based on management of fisheries resources by community Desa Sungai Pasak in West Sumatera. Management of fisheries resources is known as ikan larangan. Ikan larangan is a kind of fisheries management system that applies closing seasons to fishing in a portion of river or canal for a certain period. The purpose of this study was to indentify management of fisheries institutional, transaction cost, and describe the benefit from management of ikan larangan Desa Sungai Pasak. The research method are purposive sampling and snowball sampling. Another method of supporting the result interview are observations and documentation. The result of research showed that Ikan larangan areas is under the management of community from village government and local comunity representative. Management cost for ikan larangan include operational cost (IDR 12 000 000) and transaction cost (IDR 8 000 000 anually). Field observation shows that the management of the ikan larangan areas has a positive impact on the villagers. Some of the benefits from the system are fisheries resources in the open waters are kept sustainable, facilitating brotherhood among the villagers, and generating income for villagers
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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