Judul: Melon Supply Chain System Using Blockchain Technology
Abstrak: Melon merupakan salah satu komoditas hortikultura bernilai tinggi sehingga menjadi salah satu buah yang sering ditemui dan dikonsumsi masyarakat. Sebagai salah satu buah yang populer, melon berpotensi memberikan kontribusi terhadap perekonomian negara apabila proses distribusi dan produksinya dikelola dengan baik. Selain itu, kesadaran masyarakat dalam mengkonsumsi buah yang minim bahan kimia dengan kualitas terbaik semakin meningkat. Sehingga penting bagi otoritas rantai pasok dalam menjamin keamanan produknya. Rantai pasok memerlukan suatu sistem yang mampu menyajikan informasi dengan karakteristik terpercaya, dapat dilacak dan transparan. Oleh karena itu, dibutuhkan sebuah sistem rantai pasok yang efisien dan akurat dalam menyampaikan informasi kepada konsumen. Solusi atas permasalahan tersebut yaitu dengan menggunakan teknologi blockchain. Blockchain adalah teknologi dimana semua transaksi bersama dicatat tanpa menghapus catatan transaksi sebelumnya. Teknologi ini dapat membantu setiap pelaku rantai pasok buah melon dalam melakukan pencatatan transaksi buah melon. Pencatatan transaksi yang transparan dapat meningkatkan kepuasan dan kepercayaan konsumen terhadap kualitas buah melon yang akan dikonsumsi. Tujuan utama dari penelitian ini adalah mengembangkan dan mengimplementasikan teknologi blockchain dalam sistem ketertelusuran pada rantai pasok melon sehingga informasi yang disajikan memiliki karakteristik aman, transparan, dan traceable. Metode yang digunakan untuk pengembangan sistem adalah metode prototyping. Framework blockchain yang digunakan adalah hyperledger fabric. Framework ini dipilih karena merupakan salah satu jaringan blockchain private dimana setiap anggota dapat berinteraksi sesuai dengan kode rantai yang telah ditentukan. Berdasarkan hasil pengujian yang dilakukan dengan metode blackbox testing dan postman, menunjukkan bahwa sistem telah berjalan dengan baik sesuai dengan tujuan yang diharapkan. Studi ini secara efektif telah mengembangkan prototipe berbasis blockchain untuk rantai pasok melon, yang dikenal sebagai Melon App., Melons are a prominent high-value horticultural commodity frequently encountered and consumed by the public. As a popular fruit, melons has the potential to contribute to the country's economy if its distribution and production are managed well. Furthermore, there is an increasing societal awareness regarding the consumption of fruits with minimal chemical use and top-notch quality. Therefore, it is crucial for supply chain authorities to ensure the safety of these products. The supply chain requires a system that is able to present information with the characteristics of trusted, traceable and transparent. Therefore, an efficient and precise supply chain system is required to disseminate information to consumers. The solution to this challenge lies in the utilization of blockchain technology. Blockchain is a technology where all shared transactions are recorded without deleting previous transaction records. This technology can assist every actor in the melon fruit supply chain in recording melon fruit transactions. Transparent transaction records can enhance consumer satisfaction and trust in the quality of the melon fruit to be consumed. The main objective of this study is to develop and implement blockchain technology in a traceability system in the melon supply chain. The method used for system development is the prototyping method. The blockchain framework used is hyperledger fabric. This framework was chosen because it is one of the private blockchain networks where each member can interact according to the predefined chain code Based on the results of tests carried out using the blackbox testing and postman methods, it shows that the system
Keyword: blockchain, hyperledger fabric, prototyping, supply chain

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: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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