Judul: Design and Build a Blockchain-Based College Academic Information System
Abstrak: Pemanfaatan teknologi informasi dapat kita lihat pada bidang Pendidikan, yaitu Sistem Informasi Akademik (SIAKAD). Sistem Informasi Akademik adalah suatu sistem yang dirancang untuk keperluan pengelolaan data-data sehingga seluruh proses kegiatan akademik dapat dikelola menjadi informasi yang bermanfaat. Kondisi saat ini semua penyimpanan data disimpan pada sebuah database hal ini menimbulkan permasalahan yaitu sulitnya membackup data jika terjadi kerusakan dan menyulitkan saat melakukan validasi data karena tidak adanya verifikator saat melakukan input data. Maka dari itu solusi dari permasalahan tersebut adalah dengan menerapkan Teknologi Blockchain pada sistem akademik. Teknologi Blockchain adalah sebuah buku besar yang akan mencatat seluruh kegiatan yang dilakukan kemudian data akan didistribusikan kepada setiap node yang sudah ditentukan, sehingga setiap node akan memiliki salinan darisetiap transaksi. Transaksi yang dibuat adalah data nilai mahasiswa, data tersebut akan disimpan ke dalam blockchain. Pada penelitian ini sudah dirancang sebuah aplikasi sistem informasi akademik berbasis blockchain menggunakan metode prototype. Hasil dari penelitian ini adalah sebuah aplikasi sistem informasi blockchain yang dapat memverifikasi keaslian transkrip nilai dan melihat ketelusuran data nilai mahasiswa., Academic Information System (SIAKAD) is an application designed for data management purposes so that the entire process of academic activities can be managed into useful information. The current situation is that all the data are stored in a databases, which can cause problems, namely of backing up data and difficulty in validation. As we all know, students transcripts are needed for scholarships, applying jobs etc. Hence they need to be validated. Therefore, the purpose of this research is to design a blockchain-based SIAKAD application that can make it easier to check data to prove the authenticity ofstudent grade transcripts and display traceability of student grade data. Blockchain technology is a ledger that will record all activities carried out in this case the data that is recorded and stored into the blockchain is the value transcript data. data will be distributed to each node that has been determined, so that each node will have a copy of every transaction. The transactions made are student value data, the data will be stored into the blockchain. In this study, a blockchain-based academic information system application has been designed using the prototype method and then using the hyperledger fabric as a framework for building blockchain. The result of this research is a blockchain information system application that can verify the authenticity of grade transcripts and see traceability of student grade data.
Keyword: blockchain, ketelusuran data, prototype, sistem informasi akademik

Judul: Api Creation for Backend System Development in the Blockchain-Based Halal Certificate Application Process
Abstrak: Blockchain telah mengubah paradigma di berbagai industri dengan menawarkan potensi untuk meningkatkan ketertelusuran, transparansi, dan keamanan. Dalam pembuatan sertifikasi halal, dibutuhkan sistem yang efisien dapat menciptakan jejak transparan dan tidak dapat diubah. Sertifikasi halal konvensional memiliki tantangan seperti kurangnya ketertelusuran, transparansi, dan cenderung membutuhkan waktu yang lama. Blockchain, dengan desentralisasi dan keamanannya, menjadi solusi potensial untuk mengatasi permasalahan tersebut. Penelitian ini bertujuan mengimplementasikan teknologi jaringan blockchain yang akan diintegrasikan dengan application programming interface (API) dalam proses alur pembuatan sertifikat halal. Pengembangan dilakukan menggunakan framework Express Js dengan Bahasa pemrograman JavaScript untuk bagian API dan Hyperledger Fabric dengan Bahasa pemrograman Golang untuk bagian chaincode pada jaringan blockchain. Pada penelitian ini pengembangan API backend telah berhasil terintegrasi dengan jaringan blockchain dan telah di test menggunakan whitebox testing dengan aplikasi Postman. pada proses pengajuan sertifikat halal jaringan blockchain terintegrasi ini diberi nama halal network., Blockchain has changed the paradigm in various industries by offering the potential to improve traceability, transparency, and security. In the creation of halal certification, an efficient system can be required that can create a transparent and irreversible trail. Conventional halal certification has challenges such as lack of traceability, transparency, and tends to take a long time. Blockchain, with its decentralization and security, is a potential solution to overcome these problems. This research aims to develop blockchain network technology that will be integrated with an application programming interface (API) in the process of making halal certificates. The development was carried out using the ExpressJs framework with the JavaScript programming language for the API part and Hyperledger Fabric with the Go programming language for the chaincode part of the blockchain network. In this study, the backend API development has been successfully integrated with the blockchain network and has been tested using whitebox testing with Postman application. The process of applying for a halal certificate, this integrated blockchain network is named halal network.
Keyword: blockchain, hyperledger fabric, prototyping, Halal Certificate, application programming interface

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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