• Journal of Information Processing Systems
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• v.13 no.1
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• pp.26-39
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• 2017

The need for embedded devices to be able to exchange information with each other and with data centers is essential for the advent of the Internet of Things (IoT). Several existing communication protocols are designed for small devices including the message-queue telemetry transport (MQTT) protocol or the constrained application protocol (CoAP). However, most of the existing implementations are convenient for computers or smart phones but do not consider the strict constraints and limitations with regard resource usage, portability and configuration. In this paper, we report on an industrial research and development project which focuses on the design, implementation, testing and deployment of a MQTT module. The goal of this project is to develop this module for platforms having minimal RAM, flash code memory and processing power. This software module should be fully compliant with the MQTT protocol specification, portable, and inter-operable with other software stacks. In this paper, we present our approach based on abstraction layers to the design of the MQTT module and we discuss the compliance of the implementation with the requirements set including the MISRA static analysis requirements.

• Information Systems Review
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• v.3 no.1
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• pp.103-114
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• 2001

Today many firms rely on information systems planning (ISP) to remain competitive by transforming their business model and redesigning their IT architecture. In spite of some great success stories, many firms are having a lot of difficulty with ISP. Previous research has found a number of critical factors for ISP. However, these studies have focused mainly on organizational characteristics. In contrast, our study has taken into consideration organizational work and planning process as main critical factors for ISP performance. Empirical results indicate that the ISP performance has a stronger relationship with ISP planning process rather than organizational work characteristics.

• Asia pacific journal of information systems
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• v.25 no.1
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• pp.25-60
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• 2015

Use cases are commonly used to represent customer requirements during systems development. In a large software development environment, finding relevant use cases from a library of past or related projects is a complex, error-prone and expensive task. This study proposes an ontological methodology to support use case retrieval in an interactive manner. The architecture of a prototype system that implements this methodology is presented. To evaluate whether the proposed approach can provide satisfactory results to users, this study develops a research model and hypotheses based on interaction theory. These hypotheses are empirically tested using a laboratory experiment which controls information filtering and perceived interaction. Our study suggests that a system which interacts with a user intelligently reduces cognitive load and increases self-efficacy and satisfaction.

• Asia pacific journal of information systems
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• v.31 no.2
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• pp.141-184
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• 2021

While a great body of information systems (IS) literature has discussed mobile banking (m-banking) services, most of these studies have focused on the adoption or acceptance phases of this technology; with little attention was given to users' intension to continue using such technology. This paper aims at investigating the most important factors that predict users' continuous intension to use m-banking services in the post-adoption phase. This paper presents a conceptualization and validation of an extended expectation-confirmation model (ECM). A total of 303 Kuwaiti users of m-banking services participated in this study. Partial least squares (PLS) of structure equation modelling (SEM) technique was used to analyze the data. The results mainly showed that users' continuous intension to use m-banking services is significantly influenced by perceived trust, satisfaction, self-efficacy, performance expectancy and effort expectancy. Theoretical and practical contributions as well as the research limitations and future directions are discussed.

• Asia pacific journal of information systems
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• v.31 no.3
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• pp.277-295
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• 2021

This paper examines the features that make a YouTube channel attractive to users. Considering that drawing users' attention is challenging on this platform, where voluminous amounts of videos are available, it is crucial to identify the factors that make users intend to subscribe to a YouTube channel. In this study, we used an online survey to collect data from 1125 respondents and an SEM model using Smart PLS 3.2.8 to analyze it. The results show that integrity and familiarity with a YouTube channel are positively correlated with trust in its creator, which leads to subscribing to the YouTube channel; value and accuracy also positively affect intention to subscribe to a YouTube channel via trust in content. This study enriches the field of research about trust in the creator and trust in content.

• Asia pacific journal of information systems
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• v.30 no.1
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• pp.72-93
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• 2020

With the proliferation of smart devices, mobile banking has become increasingly important. Customers can manage their banking needs without desktop computers or a face-to-face meeting with bank tellers. However, contrary to expectation of wide-spread use of mobile banking, several factors restrict its adoption. The purpose of this study is to explore what factors affect positively or negatively the adoption of mobile banking from economic (operational competence, convenience, mental accounting), psychological (hope, self-efficacy, optimism, resiliency) and social perspectives (normative social pressure, embarrassment avoidance). This paper suggests that three enablers would consequently affect a customer's perceived utilitarian and hedonic value in mobile banking, followed by trust and intention to use. In testing the hypothesized research model, survey and analysis of a structural equation model using Amos are conducted. The findings emphasize that banks need to focus on perceived utilitarian and hedonic values when considering economic, psychological and social enablers most salient to customers in order to promote greater adoption of mobile banking services.

• The Journal of Information Systems
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• v.33 no.2
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• pp.143-168
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• 2024

Purpose This study highlights the crucial role of external APIs in driving dynamic evolution within a digital ecosystem. Drawing on the concept of evolutionary network biology perspective, this study hypothesizes that APIs' (non)network properties can significantly impact a digital ecosystem's product variety. Design/methodology/approach This study analyzes plug-in source code data from WordPress.org between January 2004 and December 2014, using survival analysis to test this hypothesis. Findings The empirical results demonstrate that external APIs have a more significant impact on promoting ecosystem evolution over time than those offered by a focal platform system. This research enhances our understanding of ecosystem dynamics and emphasizes the critical role of the generative nature of APIs in fostering ecosystem growth.

• Asia pacific journal of information systems
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• v.34 no.2
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• pp.620-634
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• 2024

Recently, active research has been conducted on the metaverse as a new education platform. However, only a few studies analyze the specific characteristics of this platform from potential users' perspectives. Therefore, based on literature reviews and expert surveys on education, this study specifies the attributes and levels to be considered in developing metaverse education platforms. An online survey was conducted among university students in South Korea, and conjoint analysis was performed to propose the conditions for education platforms optimized for university education. The results revealed that 85% of respondents were willing to use metaverse education platforms, and preferred virtual classrooms that enable indirect experience in a web-based personal computer environment. In particular, the respondents showed a high preference for the education platforms that were available at $5 per month and used newly created three-dimensional avatar characters of themselves. This study is significant since its results have strategic implications for expanding the metaverse's use as a new educational space.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.5
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• pp.197-205
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• 2011

Since Intelligent Transport Systems(ITS) is a complex project combining technology and system of transportation, information and communication and civil engineer, it needs a specialized management activities. However, it is difficult to judge who has responsibility for a shoddy and fault construction since the role between project management and supervision is very ambiguous. The aim of this study is propose an efficient project management and supervision for ITS reflecting the characteristics of ITS. Therefore, we suggest a statistical models using nonlinear regression model to prepare the project management and supervision compensation criteria, hence, we choose the realistic and validation statistical model.

• Journal of Korea Society of Industrial Information Systems
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• v.11 no.4
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• pp.105-111
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• 2006

Recently, many electronic system with various character input systems for information representation and delivery. Character input systems for the Korean language are keyboards and mobile phone that have 12 or more input buttons and so on. But these input systems give difficulties for the disabled because the input system have 12 and more small input buttons. In this paper, we developed Korean language input software in order to develop a Korean language input system for the handicapped. The developed system have 5 input buttons and 2 function buttons for Korean language typing using Korean language shape input scheme. This system is not only easy to use by the handicapped, but also simple for children and foreigner to learn Korean language.