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A Model-Based Simulator for Content Delivery Network using SimEvents MATLAB-Simulink
Full text linkAbstract—Simulation methodology has become popular among network researchers due to the availability of various sophisticated and the flexibility of simulation packages in model construction and the result’s validation. The objective of our research is to introduce a discrete simulator tools known as SimEvents toolbox that runs on MATLAB-Simulink with the advantages of graphical user interface (GUI) system and a total customized simulator design. In this paper, we design a model-based network simulator named as “CDNlink”. CDNlink is designed based on a queuing model and functioned to study the content delivery networks (CDN). As a result, we have designed the simulator for Client, Router, DNS, and Server. Moreover, we simulate the CDN system for packet round trip time (RTT) and server’s queue length.Keywords—simulink, content delivery network, model-based simulation, simevents, cdnlink
Social Media Used in Higher Education: A Literature Review of Theoretical Models
Full text linkAbstract— This research provides a literature review related with social media used for collaborative learning and engagement in turn, to affect students' academic performance in higher education. Therefore, the main objective of this research is to review models on social media use for active collaborative learning and engagement by interactive and perceptual factors in turn affecting the learning performance of research students. Therefore, this study conducted on two theories constructivism theory and Technology Acceptance Model (TAM). This paper conducted an analysis of studies dedicated to social media use for collaborative learning and engagement based on previous research problems of models, and the theories. According to the literature review and discussion in this research, we noted the full satisfaction of students was through the use of social media for active collaborative learning and engagement to positively affect their learning performance.Keywords— Social Media, Collaborative Learning, Students’ Academic Performance, Theoretical Model
Library Automation Systems Integration (Case: ELIB and SLiMS)
Full text linkAbstract—The Library automation system help reduce much work need to be done by doing monotonous routine jobs with the help of technologies such as Barcode and RFID. Unila Library as the pioneer of RFID technology implementation in Lampung province face challenge in migration. Unila Library used SLiMS Library Automation System to manage collections, which use mainly barcode to identify collection. RFID uses allow collections to be scanned in gate and warn librarian. Unfortunately, SLiMS doesn't support SIP2 protocol which is needed by RFID devices (gate, kiosk) to function properly. Therefore, a solution must be made to address the migration of data and support SIP2 protocol. ELIB is a library automation software which support SIP2 protocol. So, library automation systems integration which synchronize both database in ELIB and SLiMS to keep up to date data and allow support for SIP2 protocol must be made in the form of middleware. Some of difficulties arise in integration was the development of both library automation systems which require fine tuning everytime update occurs and both systems in active use. Benchmarking is done to find anomaly and disreparancies of data. And, because the integration system is build as middleware, it remain flexible and open to future development. It can be concluded, Library automation systems integration require vigilance and keen observations into minuscule level especially because both systems are so different.Keywords— library, RFID, ELIB, SLIMS, SIP2, middlewar
The Shoreline Retreat and Spatial Analysis over the Coastal Water of Belawan
Full text linkAbstract – An examination of shoreline retreat is conducted over the muddy coast in the vicinities of the port of Belawan. The related sea level rise is estimated using the well-known Bruun Rule based on the characteristics of mud profile prevalent along the eastern coast of North Sumatera Province. The spatial analysis involved is done utilizing the concept and procedure of GIS. The averaged shoreline retreat over the hot spot area of erosion, i.e. 18 m per year, implies that the relative rate of sea level rise is in the range of 14 to 18 mm per year, indicating an extremely severe rate. In addition, three other cases of simple GIS applications related to coastal water of the port are spatially demonstrated. Keywords – coastal water, coastal erosion, sea level rise, and GI
The Scheme of 10th Order Implicit Runge-Kutta Method to Solve the First Order of Initial Value Problems
Full text linkAbstract—To construct a scheme of implicit Runge-Kutta methods, there are a number of coefficients that must be determined and satisfying consistency properties and Butcher’s simplifying assumptions. In this paper we provide the numerical simulation technique to obtain a scheme of 10th order Implicit Runge-Kutta (IRK10) method. For simulation process, we construct an algorithm to compute all the coefficients involved in the IRK10 scheme. The algorithm is implemented in a language programming (Turbo Pascal) to obtain all the required coefficients in the scheme. To show that our scheme works correctly, we use the scheme to solve Hénon-Heiles system.Keywords—ODEs, 10th order IRK method, numerical technique, Hénon-Heiles syste