Judul: User Experience Design of Shrimp Pond Monitoring and Controlling Application using Five Planes Framework
Abstrak: Tantangan produktivitas yang tidak konsisten dan risiko penyakit udang dalam budi daya udang vaname (Litopenaeus vannamei) di Indonesia mendorong perlunya pengoptimalan dalam aplikasi Mobile RAS Plasma FineBubble, sistem monitoring dan controlling kunci di BPIU2K. Penelitian ini menggunakan framework Five Planes dan Retrospective Think Aloud untuk merancang pengalaman pengguna yang efektif. Data kuantitatif dan kualitatif dari stakeholder dan pakar perikanan BPIU2K dianalisis untuk mengukur kepuasan pengguna dan mengidentifikasi potensi kesalahan operasional. Hasil evaluasi menunjukkan bahwa penyesuaian fitur sesuai kebutuhan pengguna dapat meningkatkan efisiensi operasional dan kesehatan udang. Penelitian ini diharapkan dapat memberikan rekomendasi efektif untuk perbaikan fitur yang mendukung pertumbuhan sektor perikanan udang di Indonesia. Integrasi teknologi RAS dan Plasma FineBubble yang baik dapat mendorong sektor perikanan udang menuju pertumbuhan yang berkelanjutan dan berkontribusi pada target produksi dan ekspor yang meningkat., The challenges of inconsistent productivity and shrimp disease risk in vaname shrimp (Litopenaeus vannamei) farming in Indonesia prompted the need for optimization in RAS Plasma FineBubble's Mobile application, a key to monitoring and controlling system at BPIU2K. This research uses the Five Planes framework and Retrospective Think Aloud to design an effective user experience. Quantitative andqualitative data from stakeholders and experts of BPIU2K's fisheries experts were analyzed to measure user satisfaction and identify potential operational errors. The evaluation results showed that customizing features according to user needs can improve operational efficiency and shrimp health. This research is expected to provide effective recommendations for feature improvements that support the growth of the shrimp fisheries sector in Indonesia. A good integration of RAS and FineBubble Plasma technology can drive the shrimp fisheries sector towards sustainable growth and contribute to increased production and export targets.
Keyword: Fine Bubble, Five Planes, pengalaman pengguna, Retrospective Think  Aloud

Judul: Optimalisasi Backend Monitoring Kolam
Budidaya Udang Berbasis Water Quality Monitoring and Controlling System.
Abstrak: Limbah pencemar air yang memenuhi standar kualitas menjadi tujuan penting untuk meningkatkan produksi budidaya udang super intensif. Dalam upaya mengurangi beban limbah dan juga memenuhi pedoman umum pembesaran udang, maka dirancang suatu Instalasi Pengolahan Air Limbah (IPAL) menggunakan teknologi Recirculating Aquaculture System (RAS) dan pendekatan Plasma Finebubble. Teknologi ini diimplementasikan dengan menerapkan sistem pemantauan dan pengendalian (WQMCS) IoT untuk kolam budidaya udang. Penelitian sebelumnya mengembangkan aplikasi ¬backend dengan menggunakan Laravel dan dianalisa mampu dioptimalkan. Penelitian ini akan dikembangkan kembali sistem pemantauan dan pengendalian dengan menggunakan framework Yii2, kemudian membandingkan kinerjanya dengan aplikasi yang telah dibuat sebelumnya. Metode yang digunakan untuk pengembangan aplikasi adalah metode Agile Scrum dan pengukuran kinerja dilakukan dengan mengukur fungsional sistem, tingkat kesalahan, waktu respon, dan permintaan per detik. Sistem berhasil dioptimalkan dengan aktifnya semua endpoint serta mengurangi tingkat kesalahan sampai 0%, waktu rata-rata respon 34,31ms, dan 5,39 permintaan per detik lebih banyak., Waste water pollution that meets quality standards is an important goal to increase the production of super-intensive shrimp farming. In an effort to reduce the waste load and also meet the general guidelines for shrimp rearing, a Wastewater Treatment Plant (IPAL) using Recirculating Aquaculture System (RAS) technology and Plasma Finebubble approach was designed. This technology is implemented by applying an IoT monitoring and control system (WQMCS) for shrimp farming ponds. Previous research developed a backend application using Laravel and analyzed that it can be optimized. This research will redevelop the monitoring and control system using the Yii2 framework, then compare its performance with the application that has been made before The method used for application development is the Agile Scrum method and performance measurement is done by measuring system functionality, success rate, response time, and requests per second. The system was successfully optimized with all endpoints active and improved 100% success, 34.31ms average response time, and 5.39 more requests per second.
Keyword: Backend, Shrimp, WQMCS, YII2, RAS

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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