Judul: Design and Development of Semi-Organic Rice Traceability Information System
Abstrak: Padi sehat atau dikenal beras semi organik merupakan usaha tani yang menerapkan budidaya pertanian ramah terhadap lingkungan. Padi sehat merupakan gabungan antara pertanian organik dan konvensional. Dalam upaya menerapkan budidaya padi sehat diperlukan sistem yang dapat melakukan pendataan terhadap proses pemanenan hingga pascapanen yang terintergrasi di website. Unit pemanenan, unit penggilingan, unit pengemasan (produsen), dan end user terlibat dalam sistem rancang bangun informasi traceability beras semi organik. Penelitian ini bertujuan untuk membangun sistem informasi traceability beras semi organik berdasarkan pemindaian Quick Respon (QR) Code untuk mengetahui informasi produk beras yang dapat diakses melalui website. Metode penelitian mengacu pada metode system development life cycle (SDLC) yang terdiri dari investigasi sistem, analisis sistem, desain sistem, implementasi, pemeliharaan, dan evaluasi. Penelitian ini menghasilkan website yang dapat melakukan pendataan dan ketertelusuran melalui pemindaian QR Code menggunakan smartphone yang melibatkan produsen dan end user. End user dapat melakukan layanan pengaduan yang terdapat pada sistem terkait kualitas beras. Berdasarkan hasil uji system usability scale (SUS), didapatkan nilai sebesar 80,75 yang mengartikan sistem diterima oleh pengguna dan termasuk kategori A. Pengujian verifikasi sistem berjalan dengan baik dan dalam pengujian kompatibilitas browser, tidak ditemukan permasalahan sehingga dapat diterapkan ke dalam semua jenis browser., Healthy rice, also known as semi-organic rice, is an agricultural business that implements environmentally friendly agricultural cultivation. Healthy rice is a combination of organic and conventional farming. In an effort to implement healthy rice cultivation, a system is needed that can collect data from the harvest process to post-harvest which is integrated on the website. Harvesting units, milling units, packaging units (producers), and end users are involved in the semi-organic rice traceability information design system. This research aims to build a semi-organic rice tracking information system based on Quick Respon (QR) Code scanning to find out rice product information that can be accessed via the website. The research method refers to the system development life cycle (SDLC) method which consists of system investigation, system analysis, system design, implementation, maintenance, and evaluation. This research produces a website that can collect and search for data through scanning QR Codes using a smartphone involving producers and end users. End users can carry out complaint services in the system regarding rice quality. Based on the system usability scale (SUS) testing results, a score of 80.75 was obtained, which means the system was accepted by users and was included in category A. The system verification test went well and no problems were found in browser compatibility testing so it can be applied to all types of browsers.
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Judul: Design an Android Based Shallot Distribution Traceability System Using QR Code
Abstrak: Tingginya jumlah produksi bawang merah di Indonesia tidak diiringi dengan informasi yang jelas mengenai asal-usul produk selama proses distribusi. Asal-usul di sini mencakup penanaman, kualitas, jumlah, harga, penanganan yang dilakukan, dan pelaku yang bertanggung jawab selama proses distribusi sampai ke tahap akhir rantai pasok. Oleh karena itu sistem ketertelusuran (traceability) menjadi hal penting untuk dikembangkan untuk memperoleh informasi asal-usul yang jelas dari suatu produk. Penelitian ini bertujuan mengidentifikasi rantai pasok distribusi bawang merah dan membuat rancang bangun sistem ketertelusuran distribusi berbasis android dengan implementasi Quick Response (QR) Code. Metode yang digunakan dalam penelitian ini adalah System Development Life Cycle (SDLC) model waterfall. Hasil penelitian menunjukkan bahwa rantai pasok bawang merah dimulai dari petani, perantara, pedagang pengepul, pasar induk, pengecer, dan konsumen rumah tangga. Penelitian juga menghasilkan aplikasi android bernama Shobis yang dibangun menggunakan bahasa Kotlin dan layanan Firebase. Seluruh data ketertelusuran disimpan menggunakan kode unik berupa QR Code. Sistem ketertelusuran yang dibangun dapat dikelola oleh kementrian perdagangan, e-commerce, dan konsumen industri seperti UMKM. Biaya yang diperlukan untuk menjalankan sistem ini dibagi menjadi dua yaitu biaya yang dikeluarkan aktor dan organisasi meliputi biaya tetap serta biaya tidak tetap. Pengujian sistem dilakukan untuk mengetahui seluruh sistem berfungsi dengan baik. Pemeliharaan juga dilakukan untuk mengevaluasi sistem yang telah dibangun. Evaluasi dilakukan menggunakan metode System Usability Scale (SUS) dan memperoleh skor 70,48 serta percentile rank 56%., The high amount of shallot production in Indonesia is not accompanied by clear information on the origin of the product during the distribution process. This includes planting, quality, quantity, price, handling, and responsible actors during the distribution process to the final stage of the supply chain. Therefore, it is important to develop a traceability system to obtain clear information on the origin of a product. This research aims to identify the shallot distribution supply chain and design an Android-based distribution traceability system with Quick Response (QR) Code implementation. The method used in this research is the System Development Life Cycle (SDLC) waterfall model. The results showed that the shallot supply chain starts from farmers, intermediaries, collecting traders, wholesale markets, retailers, and household consumers. The research also produced an Android application called Shobis which was built using the Kotlin language and Firebase services. All traceability data is stored using a unique code in the form of a QR Code. The traceability system can be managed by the Ministry of Trade, e-commerce, and industrial consumers such as MSMEs. The costs required to run this system are divided into 2 namely, costs incurred by actors and organizations, including fixed and non-fixed costs. System testing is conducted to determine if the entire system is functioning properly. Maintenance is also carried out to evaluate the system that has been built. The evaluation was carried out using the System Usability Scale (SUS) method and obtained a score of 70.48 and a percentile rank of 56%.
Keyword: android, QR Code, SDLC, shallot, traceability

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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