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: Front-End Development of Blockchain Based Shallot Supply Chain System Using Prototyping Method
Abstrak: Bawang merah (Allium ascalonicum L.) merupakan komoditas hortikultura yang memiliki angka konsumsi rumah tangga tertinggi di Indonesia. Untuk menjaga kualitas dan keamanan produk maka diperlukan pemantauan pada kualitas produk pada rantai pasok bawang merah yang dimulai dari panen benih oleh penangkar hingga sampai ke tangan konsumen. Blockchain sebagai buku besar transaksi, dapat dimanfaatkan untuk melakukan pencatatan transaksi dan penelusuran transaksi pada rantai pasok. Penelitian ini bertujuan untuk mengembangkan aplikasi front-end pada sistem rantai pasok bawang merah berbasis blockchain menggunakan library ReactJS dan REST API untuk komunikasi data. Pengembangan sistem ini dilakukan secara tim dan menggunakan metode Prototyping. Hasil dari penelitian ini merupakan progressive web app yang dapat mencatat transaksi penangkar, petani, dan pengumpul pada rantai pasok dan dapat membantu konsumen dalam melakukan penelusuran pada komoditas bawang merah yang telah diuji menggunakan metode black-box. Diharapkan pada penelitian selanjutnya dapat dilakukan penelitian pada aspek user experience pada aktor rantai pasok., Shallot (Allium ascalonicum L.) is a horticultural commodity that has the highest household consumption rate in Indonesia. To maintain the quality and safety of the product, it is necessary to monitor product quality in the shallot supply chain, starting from seed harvesting by breeders to the hands of consumers. Blockchain as a transaction ledger can be used to record and trace transactions in the supply chain. This study aims to develop a front-end on the shallot supply chain blockchain system using the React JS library and REST API for data communication. The development of this system is carried out in a team using the Prototyping method. The results of this study are progressive web app that can record the transactions of shallot breeders, farmes, and collectors in the supply chain and enables consumers to conduct searches on the shallot commodity that have been tested using black-box method. It is hoped that further studies can conduct researchs on the user experience aspect of supply chain actors.
Keyword: blockchain, front-end, prototyping, shallots, supply chain

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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