Şifreleme Yöntemleri ve RSA Algoritması Üzerine Bir İnceleme

Günümüzde, bilişim teknolojilerinin gelişmesiyle birlikte haberleşme ve bilgi güvenliğinin sağlanması için şifrelemenin önemi giderek artmaktadır. Özellikle internet teknolojisinin gelişmesiyle birlikte veri güvenliğinin sağlanması için birçok şifreleme algoritmaları kullanılmaktadır. Şifreleme algoritmaları simetrik ve asimetrik olmak üzere iki başlık altında incelenmektedir. Bu çalışmada ise simetrik ve asimetrik şifreleme algoritmalarının genel özelliklerine yer vermekle birlikte literatürde önemli bir yere sahip asimetrik şifreleme algoritmalarından biri olan RSA algoritması incelenerek RSA algoritmasının şifreleme yöntemleri üzerindeki etkisi analiz edilmiştir. RSA algoritmasının yapısı, genel özellikleri, avantajı ve dezavantajı hakkında bilgilere yer verilmiştir

Research on effect of animation use in chemistry lesson teaching on students' learning achievement

Nowadays, the change of theories about learning of information and continuous increase of information has affected teaching methods. The fast developments realized in computer world has affected teaching field as many others are affected in the same way. Computer aided teaching began to replace traditional memorization based methods slowly and slowly [11, 16]. In this study, it is searched to learn what effect animation prepared for chemistry lessons has on students' achievement

Parameter extraction for photovoltaic models with tree seed algorithm

Evaluation, simulation and optimization of PV systems is very important for fast and accurate parameter extraction based on current–voltage and power–voltage characteristic curves of photovoltaic models. Therefore, researchers used many metaheuristic algorithms to estimate the parameters of various PV modules. In this study, tree seed algorithm (TSA) was used for parameter estimation of the STM6-40/36 PV module. In the basic TSA, there are two different resolution mechanisms for balancing both local and global search technique. For this reason, basic TSA was preferred for parameter extraction of the PV module. The parameter results obtained by TSA were compared with those found by some other algorithms in the literature. According to the comparison result, the lowest root mean square error (RMSE) was obtained with the TSA algorithm. When the convergence graphs are examined, it is seen that TSA converges faster than other algorithms. When the box plots are analyzed, the results obtained by TSA have fewer outliers than the results of other algorithms, showing that TSA has a stable structure. In addition, a ranking graph was drawn according to the results obtained by all algorithms at each run time, and it was seen that TSA had the lowest RMSE value at all run times. Thus, it is concluded that TSA is a very competitive method for the PV module problem