Browsing by Author "Mardiansyah, Viddi"

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    BLOCKCHAIN AND IOT: OPPORTUNITIES AND CHALLENGES
    (International Journal of Psychosocial Rehabilitation, Vol. 24, Issue 2, 2020) Mardiansyah, Viddi; Sunjana
    Blockchain innovation has been changing the budgetary business and has made another cryptoeconomy in the most recent decade. The fundamental ideas, for example, decentralized trusting and distributing ledger is pledge for dispersed, and substantial scale IoT (Internet of Things) implementation. In any case, the utilizations of blockchain digital forms of money in this space are rare in light because of lack understanding and inborn design difficulties. In this paper, we depict the open doors for implementation utilizing blockchain and IoT and to inspect the difficulties engaged with architecting Blockchain-based IoT applications (Abstract)
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    COMPARATIVE ANALYSIS OF QUALITY OF SERVICES FOR VOIP SERVICES IN WIMAX 802.16E NETWORK USING SCHEDULING SERVICE BEST EFFORT (BE) AND UNSOLICITED GRANT SERVICE (UGS)
    (Journal of Advanced Research in Dynamical & Control Systems, Vol. 11, 03-Special Issue, 2019) Mardiansyah, Viddi; Tiarninda, Nanda Namira
    Broadband access nowadays are very important, especially to satisfy every user demands and supporting a new real time services. Ones of the need is the presence of voice service and WiMAX, as a Broadband Wireless Access solution for Wireless MAN, covering a very large distances with high throughput and is a promising technology for Next Generation Networks, configured with various scheduling service class with different quality. Best Effort (BE) and Unsolicited Grant Service (UGS) as a Scheduling service class that can be configured on WiMAX. In this paper the performance of voice service over a WiMAX network using BE and UGS service classes has been investigated. To analyze the QoS parameters, the WiMAX module has been developed based on popular network simulator Opnet Modeler is used. Parameters that determine QoS using two scenarios, which is the user, are moving with different speed and user are stand still in one single place is analyzed. The objective is to compare between BE and UGS service classes with respect to the QoS parameters, such as throughput, packet loss, delay and jitter.
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    THE INFLUENCE OF ELECTRONIC WORD OF MOUTH AND BRAND IMAGE ON BUYING DECISION
    (Journal of Advanced Research in Dynamical & Control Systems, Vol. 11, 03-Special Issue, 2019) Pratminingsih, Sri Astuti; Astuty, Eriana; Mardiansyah, Viddi
    Electronic word of mouth (e WOM) communication has turned into an important element in marketing strategy as it can influence purchase decision making. The objective of this study is to investigate the effect of electronic word of mouth on purchasing decision. The study also examines the moderating effect of brand image in the relationship between the word of mouth and purchase decision. A survey conducted to provide answers of the research questions. In this study, two hundred questionnaires were distributed using accidental sampling. The finding of this study reveals that electronic word of mouth has positive influence on purchase decision. The study also found that brand image has moderating influence in the relationship between electronic word of mouth and purchase decision.