Bilgisayar Mühendisliği Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/253
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Article Cassandra ve MongoDB NoSQL Veri Tabanlarının Karşılaştırmalı Güvenlik Analizi(2019) Saran, Murat; Saran, NurdanIn this study, we analyze the security of two NoSQL databases, MongoDB 3.6.3 and Cassandra 3.11.1 in a multi-node configuration in two steps. The first step is a comparative study of both databases’ security features according to ten selected criteria from the literature. The second step is analyzing data encryption overhead using the Yahoo Cloud Serving Benchmark tool. This study will help decision-makers and researchers to realize the most crucial security features concerning NoSQL databases as well as to be able to analyze the NoSQL databases regarding the security features. Our security comparison results show that both databases have noteworthy security features. However, Cassandra takes the lead as it supports more security criteria. Besides, the encryption/decryption performance of the MongoDB business version is 53% faster than the Cassandra business version, and the average amount of data that the MongoDB business version can process per minute is 45% higher than the Cassandra business version. This result shows that it is more appropriate to use MongoDB in environments where encryption is required.Conference Object Gamification in e-learning: The Effect on Student Performance(2018) Saran, Murat; Al-Magsoosi, Daleh; Mohammed, DeenaThe aim of this study is to analyze the effects of gamification elements such as points, level-up, badges and leaderboard in Moodle learning management system on students' performance. Forty-seven computer science students were participated in the online Computer Architecture course in two different settings. Students of the experimental group studied with gamification tools (points, level-up, badges and leaderboard) and students of the control group had access to the same content and activities without the gamification elements. The results indicated that students in the experimental group had higher grades than the control group students indicating a statistically significant difference regarding the students' performance on post-test scores