• International Journal of Knowledge Content Development & Technology
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• 제7권3호
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• pp.67-86
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• 2017

The emergence of smart devices such as smartphones (e.g., iPhone) and tablets (e.g., iPad) may enhance e-learning by increasing communication and collaborative learning outside the classroom. These devices also facilitate the use of online technologies such as Facebook. However, the adaptation of Learning Management System (LMS) services to mobile devices took longer than social networks or online tools such as Facebook and Twitter have already been long used via smartphone. The main purposes of this study are to explore students' skill levels of LMS (Moodle) and their knowledge of online tools or technologies and then examine if there is a correlation between smartphone use and using of online tools and Moodle in learning. The study conducted among 173 students in the Department of Information Studies (DIS) in Oman, using online survey. The study found that most students demonstrated high levels of accessing course/subject materials and regularly engaging with studies of using LMSs. YouTube, Wikipedia and Facebook were clearly recorded as the most popular sites among students while LinkedIn and Academia.edu were two online tools that had never been heard of by over half of the 142 participants. Emailing and searching are recorded the most popular online learning activities among students. The study concluded that students prefer to use smartphone for accessing these tools rather than using it to access LMSs, while a positive correlation was found between the use of these tools and smartphones, but there was no correlation between smartphones and using LMSs.

• 한국정보통신학회논문지
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• 제20권4호
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• pp.721-727
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• 2016

본 논문에서는 기존 알고리즘에서의 특정 D2D 사용자 분포에 대한 광고확산 효율 저하 문제를 해결하기 위해, D2D 통신 네트워크에서 광고확산 효율을 개선하는 광고확산 알고리즘 기반의 Modified Single Linkage, K-means, 그리고 Gaussian mixture model을 적용한 Expectation Maximization 클러스터링 알고리즘의 적용이 제안되었다. 제안된 클러스터링 알고리즘들을 통해 광고 확산을 위한 목표지역들이 목표그룹으로 클러스터링되고 이를 통해 D2D 전송 단말과 수신 단말 사이의 거리를 기반으로 광고 확산 경로 설정 알고리즘과 릴레이 단말 설정 알고리즘이 적용되어 광고가 연속적으로 전파된다. 본 논문에서는 MATLAB 시뮬레이션을 통해 각 알고리즘의 최대 D2D 릴레이 제한 수와 목표지역과 비목표지역의 사용자 밀집도의 비에 따른 성능을 비교 분석한다.

• Asia pacific journal of information systems
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• 제22권2호
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• pp.39-69
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• 2012

With the advent of communication technologies including electronic collaborative tools and conferencing systems provided over the Internet, virtual collaboration is becoming increasingly common in organizations. Virtual collaboration refers to an environment in which the people working together are interdependent in their tasks, share responsibility for outcomes, are geographically dispersed, and rely on mediated rather than face-to face, communication to produce an outcome. Research suggests that new sets of individual skill, knowledge, and ability (SKAs) are required to perform effectively in today's virtualized workplace, which is labeled as individual virtual competence. It is also argued that use of online social networking sites may influence not only individuals' daily lives but also their capability to manage their work-related relationships in organizations, which in turn leads to better performance. The existing research regarding (1) the relationship between virtual competence and task performance and (2) the relationship between online networking and task performance has been conducted based on different theoretical perspectives so that little is known about how online social networking and virtual competence interplay to predict individuals' task performance. To fill this gap, this study raises the following research questions: (1) What is the individual virtual competence required for better adjustment to the virtual collaboration environment? (2) How does online networking via diverse social network service sites influence individuals' task performance in organizations? (3) How do the joint effects of individual virtual competence and online networking influence task performance? To address these research questions, we first draw on the prior literature and derive four dimensions of individual virtual competence that are related with an individual's self-concept, knowledge and ability. Computer self-efficacy is defined as the extent to which an individual beliefs in his or her ability to use computer technology broadly. Remotework self-efficacy is defined as the extent to which an individual beliefs in his or her ability to work and perform joint tasks with others in virtual settings. Virtual media skill is defined as the degree of confidence of individuals to function in their work role without face-to-face interactions. Virtual social skill is an individual's skill level in using technologies to communicate in virtual settings to their full potential. It should be noted that the concept of virtual social skill is different from the self-efficacy and captures an individual's cognition-based ability to build social relationships with others in virtual settings. Next, we discuss how online networking influences both individual virtual competence and task performance based on the social network theory and the social learning theory. We argue that online networking may enhance individuals' capability in expanding their social networks with low costs. We also argue that online networking may enable individuals to learn the necessary skills regarding how they use technological functions, communicate with others, and share information and make social relations using the technical functions provided by electronic media, consequently increasing individual virtual competence. To examine the relationships among online networking, virtual competence, and task performance, we developed research models (the mediation, interaction, and additive models, respectively) by integrating the social network theory and the social learning theory. Using data from 112 employees of a virtualized company, we tested the proposed research models. The results of analysis partly support the mediation model in that online social networking positively influences individuals' computer self-efficacy, virtual social skill, and virtual media skill, which are key predictors of individuals' task performance. Furthermore, the results of the analysis partly support the interaction model in that the level of remotework self-efficacy moderates the relationship between online social networking and task performance. The results paint a picture of people adjusting to virtual collaboration that constrains and enables their task performance. This study contributes to research and practice. First, we suggest a shift of research focus to the individual level when examining virtual phenomena and theorize that online social networking can enhance individual virtual competence in some aspects. Second, we replicate and advance the prior competence literature by linking each component of virtual competence and objective task performance. The results of this study provide useful insights into how human resource responsibilities assess employees' weakness and strength when they organize virtualized groups or projects. Furthermore, it provides managers with insights into the kinds of development or training programs that they can engage in with their employees to advance their ability to undertake virtual work.

• 한국지리정보학회지
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• 제21권4호
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• pp.81-90
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• 2018

사람과 사물, 장소 등 공간상의 모든 객체가 네트워크로 서로 연결되어 정보를 공유하는 '초연결 시대'가 점차 현실로 다가오고 있다. 이와 같은 정보통신 환경의 변화에 따라 공간정보도 중요한 도전에 직면해 있다. 정부는 자율주행자동차, 드론, 3차원 공간정보 등 '초연결'로 인한 공간정보의 사회적 수요에 부응하기 위해 노력하고 있지만 근본적인 대응책을 마련하지 못하고 있다. 초연결 시대가 필요로 하는 공간정보의 수요에 효과적이고 능동적으로 대응하기 위해서는 근본적인 변화를 이끌어 낼 수 있는 중장기 전략이 필요하다. 본 연구는 '초연결 시대'라는 커다란 패러다임의 변화에 직면한 공간정보의 미래 수요변화와 활용특성을 분석하고, 이를 기반으로 미래 사회의 공간정보 수요에 효과적으로 대응할 수 있는 전략을 모색하는데 목적이 있다.