Enformasyon Teknolojileri Bölümü / Department of Information Technologies
https://hdl.handle.net/11729/20
Enformasyon Teknolojileri Bölümüne ait koleksiyonları listeler.2024-03-28T18:36:05ZNFC loyal system on the cloud
https://hdl.handle.net/11729/5460
NFC loyal system on the cloud
Coşkun, Vedat; Özdenizci Köse, Büşra; Ok, Kerem; Alsadi, Mohammed
FC (Near Field Communication) technology facilitates mobile phone usage of billions of people throughout the world that offers diverse services ranging from payment and loyalty applications to access keys for offices and houses. NFC technology is one promising technology that have adopted smart card as secure element (SE) to provide a secure area for the execution of multiple applications and storing sensitive data. In this paper, we developed a framework to integrate NFC loyal system onto the cloud. We adapted NFC mobiles together with their SE to the cloud (Infrastructure as a Service - IaaS) using Cloud Computing methodology.
2013-01-01T00:00:00ZYakın alan iletişimi teknolojisi
https://hdl.handle.net/11729/4990
Yakın alan iletişimi teknolojisi
Özdenizci, Büşra; Ok, Kerem; Aydın, Mehmet Nafiz; Coşkun, Vedat
Yakın Alan İletişimi iki elektronik cihazın kısa mesafede, yüksek frekansta ve düşük bant genişliğinde haberleşmesini sağlayan Radyo Frekansı ile Tanımlama tabanlı bir teknolojidir. NFC uygulamaları temel olarak üç ayrı çalışma kipi kullanırlar ve her bir kipin kullanımının getirmiş olduğu ayrı özellikler ve avantajlar mevcuttur. Her çalışma kipi farklı iş fırsatları ve katma değer olanakları sunabilmektedir. Bu çalışmada, öncelikle dünyada şu an itibari ile mevcut tüm NFC uygulamaları ve prototipleri, kullanmış oldukları çalışma kiplerine göre incelenmiştir. Daha sonra bu çalışmaların her biri ayrıntılı biçimde analiz edilmiş ve oluşturdukları katma değer ortaya konulmuştur. Çalışma, bu alandaki hedef beklentilerimizin konulması ile neticelendirilmiştir.; Near Field Communication is a new, emerging technology based on RFID technology. It provides short distance, wireless communication between two NFC enabled mobile handsets at high frequency and low bandwidth NFC applications uses three operating modes so that each mode has distinguishable properties, advantages, and disadvantages; so that each one provides different possible business opportunities and different addedvalue perspectives. In this paper we examined available NFC applications and application prototypes, noticing the modes each one uses. We also have analyzed those applications and pointed out which value-added services provide which benefits. We also have provided our vision on this area in this work.
2016-06-24T00:00:00ZSaliency detection based on hybrid artificial bee colony and firefly optimization
https://hdl.handle.net/11729/4343
Saliency detection based on hybrid artificial bee colony and firefly optimization
Yelmenoğlu, Elif Deniz; Çelebi, Numan; Taşçı, Tuğrul
Saliency detection is one of the challenging problems still tackled by image processing and computer vision research communities. Although not very numerous, recent studies reveal that optimization-based methods provide relatively accurate and fast solutions for such problems. This paper presents a novel unsupervised hybrid optimization method that aims to propose reasonable solution to saliency detection problem by combining the familiar artificial bee colony and firefly algorithms. The proposed method, HABCFA, is based on creating hybrid-personality individuals behaving like both bees and fireflies. A superpixel-based method is used to obtain better background intensity values in the saliency detection process, providing a better precision in extracting the salient regions. HABCFA algorithm is capable of achieving an optimum saliency map without requiring any extra mask or training step. HABCFA has produced superior performance against its basis algorithms, artificial bee colony, and firefly on four known benchmark problems regarding convergence rate and iteration count. On the other hand, the experimental results on four commonly used datasets, including MSRA-1000, ECSSD, ICOSEG, and DUTOMRON, demonstrate that HABCFA is adequately robust and effective in terms of accuracy, precision, and speed in comparison with the eleven state-of-the-art methods.
2022-11-01T00:00:00ZDesign and implementation of a smart beehive and its monitoring system using microservices in the context of IoT and open data
https://hdl.handle.net/11729/4338
Design and implementation of a smart beehive and its monitoring system using microservices in the context of IoT and open data
Aydın, Şahin; Nafiz Aydın, Mehmet
It is essential to keep honey bees healthy for providing a sustainable ecological balance. One way of keeping honey bees healthy is to be able to monitor and control the general conditions in a beehive and also outside of a beehive. Monitoring systems offer an effective way of accessing, visualizing, sharing, and managing data that is gathered from performed agricultural and livestock activities for domain stakeholders. Such systems have recently been implemented based on wireless sensor networks (WSN) and IoT to monitor the activities of honey bees in beehives as well. Scholars have shown considerable interests in proposing IoT- and WSN-based beehive monitoring systems, but much of the research up to now lacks in proposing appropriate architecture for open data driven beehive monitoring systems. Developing a robust monitoring system based on a contemporary software architecture such as microservices can be of great help to be able to control the activities of honey bees and more importantly to be able to keep them healthy in beehives. This research sets out to design and implementation of a sustainable WSN-based beehive monitoring platform using a microservice architecture. We pointed out that by adopting microservices one can deal with long-standing problems with heterogeneity, interoperability, scalability, agility, reliability, maintainability issues, and in turn achieve sustainable WSN-based beehive monitoring systems.
2022-05-01T00:00:00Z