Digital modeling of the real world with 3D modeling technologies has recently prepared the groundwork for Metaverse. Metaverse is an ecosystem that will allow social and cultural events in the real world to be carried out in the digital world as well. Inspired by this framework, this study presents an approach called MetaRepo, where users can securely store digital assets (cryptocurrency, avatars, clothes, tickets, etc.) and use them in various activities within the metaverse universe. The motivation for the realization of this study is the security problems in the exchange, buying and selling transactions that take place in the virtual universes that have become popular in recent days. Another source of motivation is the anxiety of the object owners having their possessions stolen, lost, and transferred to another universe in the Metaverse. Blockchain technology, which can store assets in MetaRepo, has been used to address these concerns. In the developed blockchain structure, New User Engine, Transaction Centre, Authenticator Engine (Weng) and Repos models have been developed for user interaction, transaction processing and security mechanism. An exemplary metaverse universe including social activities has been designed for the testing and evaluation processes of the proposed MetaRepo approach. MetaRepo is communicated from the browser via APIs. Detailed performance analysis has been carried out for the proposed model. As a result, with MetaRepo, a mechanism is aimed at which users can communicate with different metaverse universes and platforms without the need for extra verification and security measures within the metaverse universe.
In this study, a virtual laboratory has been developed to enable the effective running of applied courses in formal and distance education. Embedded systems, field programmable gate arrays (FPGA), application programming interfaces (API), and web‐based software infrastructure are used together in the virtual laboratory. Experiments belonging to digital electronics and digital communication courses can be performed by the students in the developed experiment set. Process steps performed by the student in the experiments can be followed by the designed log circuit. Every transaction performed on the experiment set was recorded and a web environment was provided to the educators where they could evaluate the experiment process. Two groups of students were formed to evaluate the success of the virtual laboratory. The first group performed the circuit setup using the traditional method and the second group on the developed virtual laboratory. According to the survey questions directed to the students, it was revealed that the use of the virtual laboratory informal and distance education would bring positive results and provide equal opportunities for disadvantaged individuals. At the same time, it was revealed that a virtual laboratory has been developed that will provide cost benefits in educational institutions.
Eğitim kurumlarında gerçekleştirilen uygulamalı öğretim faaliyetleri için laboratuvar gibi fiziki mekanların oluşturulması gerekmektedir. Bu tür öğretim faaliyetlerine katılan öğrencilerin konuyu daha iyi anlamaları için konu ile ilgili deney ortamlarının oluşturulması konuların anlaşılma seviyesini arttırmaktadır. Bu deney ortamları oluşturulurken uygulama konusuyla ilgili deney setlerinin mevcut olması eğitimin kalitesini artırmada etkili olmaktadır. Günümüzde kullanılan deney setleri gerek içerik olarak yetersiz kalmakta gerekse eğitim kurumlarına maliyetli olmaktadır. Bu çalışmada, Sayısal İletişim, Sayısal Elektronik ve Mantıksal Tasarım derslerinin eğitimini veren lise ve üniversite düzeyindeki kurumlarda söz konusu derslerin uygulamalarını tek bir deney seti üzerinde daha etkin ve daha anlaşılabilir bir düzeyde gerçekleştirmek amaçlanmıştır. Geliştirilen deney setinin mantıksal işlemleri FPGA platformu üzerinde gerçekleşmektedir. FPGA'lar sayısal iletişim, mantıksal devreler, kombinasyonel devrelerin tasarımları ve kontrol devreleri gibi birçok alanda kullanılabilmektedir. Oluşturulan tasarım ile farklı dersler ve konuları içeren uygulamaların, deney elemanlarının veya tümleşik devre tasarımlarının FPGA üzerinde VHDL aracılığıyla tasarımları yapılarak tek bir deney seti üzerinde toplanması sağlanmıştır. Gerçekleştirilen çalışma sonucunda, eğitim kurumlarının laboratuvar malzemeleri için ayırmış oldukları mali kaynakları azaltacak ergonomik, taşınabilir, kullanıcı dostu ve eğitmenin öğrenciyi ağ ortamından uzaktan takip edebileceği tümleşik bir deney seti tasarımı oluşturulmuştur.
The works produced within the music industry arepresented to their listeners on a digital platform,taking advantage of technology. The problems of thepast, such as pirated cassettes and CDs, have left theirplace to the problem of copyright protection on digitalplatforms today. Block chain is one of the mostreliable and preferred technologies in recent timesregarding data integrity and data security. In thisstudy, a blockzincir-based music wallet model isproposed for safe and legal listening of audio files.The user's selected audio files are converted intoblock chain structure using different techniques andalgorithms and are kept securely in the user's musicwallet. In the study, performance comparisons aremade with the proposed model application in terms ofthe length of time an ordinary audio player can addnew audio files to the list and the response times ofthe user. The findings suggest that the proposedmodel implementation has acceptable differences inperformance with an ordinary audio player.
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