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Article Customizing Ssl Certificate Extensions To Reduce False-Positive Certificate Error/Warning Messages(International Journal of Information Security Science, 2016) Tarazan, Şafak; Bostan, AtilaIn today’s Internet world, X.509 certificates are commonly used in SSL protocol to provide security for web-based services by server/client authentication and secure communication. Although SSL protocol presents a technical basis, this web security largely depends on user awareness of security measures as well. There are significant number of scientific studies in the literature reporting that the count of invalid or self-signed certificate usage in today’s Internet can not be overlooked. At the same time, quite a number of studies place emphasis on the acquired indifference towards certificate warning messages which are popped up by web browsers when visiting web pages with invalid or self-signed certificates. In this study, with the importance of user’s daily practices in developing habits in mind, we studied a modification of X.509 certificates in order to reduce the number of false-positive certificate-warning pop ups in order to reduce gaining faulty usage habit of invalid certificates.Article How To Teach Usage of Equipments in a Remote Laboratory(IEEE, 2007) Alparslan, Nimet Ceren; Çağıltay, Nergiz; Özen, Mustafa; Aydın, ElifEuropean Remote Radio Laboratory (ERRL) is an e learning project for students, teachers and technicians of the universities who will use the very important devices of this laboratory remotely. These devices are very expensive to buy and can be broken easily while they have been using by the people who does not really know how to use them professionally. As a solution we have developed an e-learning system which aims to support the ERRL learners while studying on how to use equipments in the system. The system is developed according to the electronic performance support systems (EPSS) approach. An EPSS is a computer-based, well structured system which improves the performance of individuals. It is an electronic infrastructure that contains, stores and distributes personal (individual) or corporate knowledge to enable people to reach necessary levels of performance in the fastest possible time and with minimum teaching support of other people. This paper discusses how the content for such a system is developed and how this content is interactively used in the EPSS platform. The technical details of the developed EPSS are also discussed in this study. We believe that this paper will help instructional system designers for designing different alternatives to improve learners’ performance.Article Using Bluetooth Low Energy Beacons for Indoor Localization(International Journal of Intelligent Systems and Applications in Engineering, 2017) Şengül, Gökhan; Karakaya, MuratBluetooth Low Energy (BLE) Beacons gain high popularity due to their low consumption of energy and, thereby, long lifetime. Using the BLE protocol, these devices emit advertisement packets at fixed intervals for a short duration. Indoor localization solutions aim to provide an accurate, low cost estimate of sub-room indoor positioning. There are various techniques proposed for this purpose. BLE Beacons are good hardware candidates to assist the creation of such indoor localization solutions. Given the exact position of BLE Beacons, one can attempt to estimate a receiver position according to the received signal power. In this work, we investigated the success of such an indoor localization approach employing multiple BLE Beacons and two different estimation techniques. The results of the experiments indicate that employing multiple BLE Beacons increases the success of prediction techniques considerably.Article A Smart Classroom Application: Monitoring and Reporting Attendance Automatically Using Smart Devices(International Journal of Scientific Research in Information Systems and Engineering, 2017) Şengül, Gökhan; Karakaya, Murat; Bostan, AtilaFor recording attendance in a classroom, generally instructors collect signatures of the attendees. Then, at the end of the semester, those signatures need to be counted and reported. This process causes waste of time and effort for both instructors and attendees. Besides this process is very error prone. Moreover, in crowded classes, there could be some misuses of this process. In this study, a smart classroom application is proposed and developed in order to monitor the attendance of the students in a classroom environment. In the design, a low-energy Bluetooth device is located at each classroom. Identification number (ID) of the low-energy Bluetooth device and the name/number of the classroom that the device is located are matched and stored in a central database. In addition to this information, the name of the courses given in that classroom and their time tables are also stored in the central database. Thus, in the database, the weekly course schedule of the classrooms is available. In addition to this central database infrastructure, a mobile application is developed that can run on both in mobile phones and smart watches. The users first install the application on their own smart devices. Whenever an attendee enters to a classroom, the smart device and its application interacts with the low-energy Bluetooth device. The student’s identification number (Student ID: SID), the identification number (ID) of the low-energy Bluetooth device located at the class, the day and time of the interaction are sent to the central database by the smart device. Using this information, the name of the attendee and the courses that he/she attended are matched using the SID of the attendee, the ID of the low-energy Bluetooth device, the day and time of the interaction. Those matching information are also stored in the central database. The records in the central database are used to create any automatic reports, i.e. the attendance status, the time and duration of the attendance, and the classroom (course) of the record. The advantage of the proposed system is that it is a fully automatic system that records the presence of the students, generates automatic attendance reports, does not require any extra device except installing a mobile application onto smart phones or smart watches of the student, and can be deployed with a low budget. The proposed system is tested in real classroom environment and it is proven to be operational.Article Open Source Learning Management Systems in Distance Learning(TOJET: The Turkish Online Journal of Educational Technology, 2010) Aydın, Cansu Çiğdem; Tirkeş, GüzinThis paper presents the major findings from evaluation the most widely used open source learning management systems and identify the most suitable open source e-learning platform. In this study, some analyses and comparisons were made about open source learning management systems the outcome of which was that Moodle was found to be outstanding with many features more than other LMS since it aims to improve the educational quality and include the tools that an e-learning system should have.Article How Content Management Problem of a Remote Laboratory System Can Be Handled by Integrating an Open Source Learning Management System? Problems and Solutions(IEEE, 2007) Çağıltay, Nergiz; Özdoğru, BurcuThis paper represents the design and implementation of the integration process of an open source learning management system (LMS) to the remote laboratory platform. The reason of using a learning management system is to prevent the problems which can be seen in the learner side of the remote laboratory systems. However, since using a learning management system such as Moodle can handle the learner problems, since it is a separate system, there are still other problems to be handled such as integrating it with the other parts of remote laboratory systems. This study explores the background information of LMS, the problems faced while integrating Moodle to remote laboratory applications, the chosen content management systems’ architecture, our architecture for integrating Moodle with the remote laboratory system and the solutions we propose for the problems.Article A Mobile Application Flow Representation for Mutual Understanding of It and Healthcare Professionals(2013) Erturan, Yusuf Nasuh; Bilgen, Semih; Tokdemir, Gül; Çağıltay, Nergiz; Yıldız, Ekrem; Özcebe, EsraEver since mobile applications were developed and became popular, they have started to take part in almost every field of our lives. Healthcare is one of the most popular fields that mobile applications have become a part of. However, development of mobile healthcare applications requires an inter disciplinary work on which people from different domains should communi cate. To do so efficiently, mobile application instructions should be provided as clearly as possible so that mutual understanding can be achieved. This study, aims to provide a methodology to provide the common grounds for healthcare and IT specialists so that to improve the satisfaction level of all the stakeholders of the system from the provided IT services and the end-user interfaces. In other words, by providing a better communication medium for the stakeholders dur ing the design phase, we believe that software development process will be improved, so do their satisfaction from the developed system.Article MEDİKAL EĞİTİMDE ÖĞRETİM TEKNOLOJİLERİNİN ROLÜ VE ÖNEMİ(2015) Çağıltay, NergizGünümüzde medikal eğitim süreçleri, son derece zahmetli ve uzun bir eğitim programını içermektedir. Teknolojide yaşanan baş döndüren ilerlemelere rağmen ülkemizde ve dünyada medikal eğitim alanında ciddi gelişmeler elde edilememekte ve yoğunlukla İngilizce “one see-one do-one teach” olarak nitelendirilen ülkemizde ise usta-çırak yaklaşımı olarak bilinen yöntem ile bu eğitimler gerçekleştirilmektedir. Ancak, özellikle çeşitli beceri yeteneklerinin geliştirilmesinin önemli olduğu medikal eğitim programlarında uygulamaya ve deneme yanılmaya yönelik olarak sunulması gereken içeriklerde önemli sıkıntılar yaşanmaktadır. Alanyazında yapılan çalışmalar, yaparak öğrenme, hata yapma ve hatalarından öğrenme, deneme yanılma yolu ile öğrenme gibi yaklaşımların öğrenme süreçlerine olan katkısını ve önemini vurgulamaktadır. Ancak, medikal eğitim süreçleri değerlendirildiğinde bu tür olanakların sağlandığı eğitim-öğretim programlarının hazırlanması aşamasında ciddi problemlerle karşılaşılmakta ve bu süreç çok da kolay olamamaktadır. Gerçek ortamlarda hasta başında bu tür deneyimlerin sunulması, gerek hasta sağlığı açısından, gerek etik kurallar açısından, gerekse hata kaldırmayan bir ortam olması nedeniyle çok mümkün olamamaktadır. Bu sorunları aşabilmek amacıyla, medikal eğitim süreçlerinde deneyime yönelik yeteneklerin kazandırılması amacıyla özel bazı modeller ve düzenekler hazırlanarak öğrencilere bu yeteneklerin kazandırılmaya çalışılması ya da kadavra eğitimlerinin verilmesi ile öğrencilerin deneyimlerinin artırılması sağlanmaktadır. Ancak bu tür düzeneklerin kurulması son derece zahmetli olmakta, tekrarlı bir şekilde bu eğitimlerin sunulmasının sağlanması amacıyla her eğitim seansının sonunda bu düzeneklerin yeniden kurulması gerekmekte ve belli bir kullanım süreci sonunda düzeneklerin tamamen yenilenmesi gerekmektedir. Kadavra eğitimlerinde de benzer sorunlar yaşanmakta, bu tür eğitim programlarını hazırlayan eğitimcilerin özellikle ülkemizde kadavra bulmakta önemli sıkıntılar yaşadıkları ve bu konudaki maliyetlerin son derece önemli boyutlarda olduğu bilinmektedir.Article Developing a Data Warehouse for Distance Remote Laboratory(IEEE, 2007) Türkmen, Güzin; Çağıltay, NergizData warehouse is an important contemporary issue for many organizations and is relatively a new field in the realm of information technology. As data warehousing, e learning is also a new field. Little research has been done regarding the special considerations and characteristics of academic data and the complexity of analyzing such data. Educational institutions measure success very differently from business-oriented organizations and the analyses that are meaningful in such environments cause unique problems in data warehousing. Especially for the educational purposes, data warehouses offer several benefits. This paper discusses the use of Data Warehouse and Decision Support resources to aid in the assessment of Distance Remote Laboratory Environment.Article Students’ Preferences on Web-Based Instruction: Linear or Non-Linear(2006) Çağıltay, Nergiz; Yıldırım, Soner; Aksu, MeralThis paper reports the findings of a study conducted on a foreign language course at a large mid-west university in the USA. In the study a web-based tool which supports both linear and non-linear learning environments was designed and developed for this course. The aim of this study was to find out students’ preferences pertaining to the learning environment and to address the factors affecting their preferences. The results of this study showed that the individual characteristics of the students affected their preferences on the learning path (linear or non-linear).
