Judul: Development of Agriblock Blockchain Platform for Traceability in Agricultural Products Supply Chain
Abstrak: Manajemen rantai pasok produk pertanian merupakan proses yang mencakup manajemen aliran informasi dan barang dari penangkar hingga ke konsumen akhir. Penerapan teknologi blockchain pada rantai pasok dapat meningkatkan nilai jual barang dan kepercayaan konsumen terhadap barang yang dibeli. Penelitian ini berfokus pada pengembangan platform blockchain Agriblock untuk meningkatkan ketertelusuran dalam rantai pasok produk pertanian, khususnya bawang merah. Platform blockchain Agriblock dikembangkan menggunakan NodeJs dengan bahasa pemrograman Typescript. Platform blockchain Agriblock yang dihasilkan terdiri atas tiga lapisan utama: infrastruktur, komputasi terdistribusi, dan platform. Lapisan infrastruktur meliputi komponen node, penyimpanan, dan jaringan pada blockchain. Lapisan komputasi terdistribusi mencakup komponen blok, transaksi, protokol konsensus, dan fungsi hash. Lapisan platform terdiri atas komponen REST API yang memfasilitasi komunikasi data dengan jaringan blockchain. Penelitian ini diharapkan dapat menjadi landasan awal dalam pengembangan platform blockchain yang difokuskan untuk manajemen rantai pasok produk pertanian., Supply chain management of agricultural products involves managing the flow of information and goods from breeders to end consumers. The use of blockchain technology in the supply chain can enhance the value of goods and increase consumer trust in the purchased products. This research focuses on the development of the Agriblock blockchain platform to improve traceability in the supply chain of agricultural products, especially shallots. The blockchain platform was developed using NodeJs with Typescript programming language. The resulting Agriblock blockchain platform consists of three main layers: infrastructure, distributed computing, and platform. The infrastructure layer includes node components, storage, and network of the blockchain. The distributed computing layer encompasses block components, transactions, consensus protocols, and hash functions. The platform layer consists of REST API components that facilitate data communication with the blockchain network. This research is expected to be an early foundation in the development of a blockchain platform that focused on agricultural product supply chain management.
Keyword: shallot, agriculture, Smallholder Palm Oil Supply Chain, traceability, blockchain

Judul: Back End Blockchain Platform Development for Shallot Supply Chain System
Abstrak: Tingginya angka konsumsi bawang merah di masyarakat Indonesia tentunya harus diiringi dengan sistem rantai pasok yang dapat mencatat semua informasi yang terjadi dalam transaksi, oleh karena itu ketertelusuran suatu produk tentunya menjadi hal yang penting jika ingin memastikan kualitas dan keamanan dari produk. Namun mayoritas sistem rantai pasok yang saat ini diterapkan tidak mendukung ketertelusuran dari produk. Penelitian ini bertujuan untuk mengembangkan sebuah sistem rantai pasok bawang merah berbasis blockchain dengan menggunakan metode Prototyping dan framework Hyperledger Fabric. Blockchain menyimpan satu atau kumpulan transaksi menjadi bentuk blok kemudian disambungkan dengan blok lainnya sehingga dengan mengakses transaksi, selanjutnya pengguna dapat mengakses transaksi berkaitan lainnya. Pengembangan telah menghasilkan sebuah sistem rantai pasok berbasis blockchain yang dapat menelusuri transaksi yang terjadi dari penangkar hingga pedagang, sistem diberi nama Bawang Merah Blockchain (BC)-Network. Application Programming Interface (API) pada BC-Network telah diuji dengan Postman dan dapat digunakan oleh sisi front end., The high rate of consumption of shallots in Indonesian society must be followed by a supply chain system that can record all information that occurrs in transactions, therefore traceability of a product is important if you want to ensure the quality and safety of the product. Unfortunately the most of the supply chain system does not yet support product traceability. This research aims to develop a blockchain-based shallot supply chain system using the Prototyping method and the Hyperledger Fabric framework. Blockchain stores a collection of transactions into blocks which are then linked with other blocks so that by accessing a transaction, users can access other related transactions. The development has successfully created a supply chain system that is able to trace the transaction that happened from farmer to merchant, the system named Bawang Merah Blockchain (BC)-Network. Application Programming Interface (API) has been tested using Postman and can be used by the front end side.
Keyword: aktor, application programming interface, bawang merah, blockchain, prototyping, rantai pasok

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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