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All Journal IPTEK Journal of Proceedings Series JUTI: Jurnal Ilmiah Teknologi Informasi
Royyana M. Ijtihadie
Institut Teknologi Sepuluh Nopember
Computer Science & IT Dentistry Education Library & Information Science

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Interactive Whiteboard and Instant Quiz for Multimedia Classroom Activity Ary Mazharuddin Shiddiqi; Royyana M. Ijtihadie; Emerson Eridiansyah Z; Baskoro Adi Pratomo; Tohari Ahmad; Waskhito Wibisono
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.363

Abstract

Information and communication technology have become a very strategic aspect in supporting human life.  One of the aspects is in education, particularly the use of e-learning system. In the e-learning system, the use of multimedia (such as video conferencing) technology allows users to have an interactive meeting without having to see collocutor directly. In this system, each user communicates by using computer networks, either locally or through the internet. This trend has encouraged developers to create such applications online. However, most of them are paid application and less convenient to use. This research developed an interactive e-learning system with features such as online quiz, whiteboard, video conference and VoIP. In this system, a web based e-learning system with video VoIP provides learning activities by the interaction of both parties that lecturers and students. This system enables the teacher and user to have an interactive conversation and to have quizzes in the middle of a class. This method is aimed to evaluate the students understanding of the materials currently presented. Delay and jitter value of this system increases along with the increase number of users. With the 15 users, the Hypertext Transfer Protocol (HTTP) delay value reaching 32.3672 and 101.6028 ms for the jitter value. Furthermore with 15 users, the Real Time Messaging Protocol (RTMP0 delay value reached 51.8868 ms and 92.0052 ms for the jitter value.
GEO-REPLICATION IN A REVIEW OF LATENCY AND COST-EFFECTIVENESS Taufiq Odhi Dwi Putra; Adi S. S. Ansyah; Miftahol Arifin; Royyana M. Ijtihadie
JUTI: Jurnal Ilmiah Teknologi Informasi Vol. 21, No. 2, July 2023
Publisher : Department of Informatics, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24068535.v21i2.a1165

Abstract

Replication is a data distribution technique for synchronization between databases so that data remains consistent. Replication can overcome data loss problems and perform system recovery quickly if a problem occurs on one of the servers. One of the problems is when a natural disaster occurs at the server location. As a result, if you do not have data replication in different locations, it will cause the system to not run and possibly lose data. Then, geo-replication can reduce latency because the distance between the client and the data center is much closer. The application of geo-replication in general replicates data in all data centers. As a result, the cost of implementation is high because it requires a lot of resources. Because of the various advantages and disadvantages in its application, it is necessary to group geo-replication techniques to make it easier for researchers and technicians to adjust as needed. Therefore, this paper surveys the articles on Geo-replication techniques to implement cost-effectiveness and latency. The articles surveyed included a method for selecting replication sites, a method for reducing round trip time, a method according to data type, and selecting a leader to determine which server node to use. The results of the article survey show that implementing geo-replication for cost-effectiveness is more suitable for use in systems where all users do not need to access all data. Meanwhile, low latency is more suitable for systems used by various types of users. This paper can utilize the techniques that have been reviewed to overcome the problem of cost-effectiveness and latency in implementing Geo-replication.
Co-Authors Adi S. S. Ansyah Ary Mazharuddin Shiddiqi Baskoro Adi Pratomo Emerson Eridiansyah Z Miftahol Arifin Taufiq Odhi Dwi Putra Tohari Ahmad Waskhito Wibisono