• Asia pacific journal of information systems
• /
• 제33권2호
• /
• pp.318-341
• /
• 2023

Mobile TV refers to the service that provides live broadcasting and video-on-demand content through a mobile device. In addition to the advertisement as the early-stage revenue model, the paid subscription model has emerged as a more sustainable revenue source for mobile TV services. In this study, with the surveys of 450 free mobile TV users, we examine the motivational factors influencing their intention to adopt a paid subscription model. Results show that three extrinsic motivations, price fairness, subjective norm, and mobile TV utilization, are positively associated with free users' paid subscription intention. In contrast, intrinsic motivations, such as hedonic need, spatiotemporal convenience, and self-efficacy, have no significant influence on the intention. We also found that the expected value is positively associated with attitude toward mobile TV service, also positively influencing the paid subscription intention.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제6권6호
• /
• pp.1522-1545
• /
• 2012

Call admission control (CAC) plays an important role in mobile cellular network to guarantee the quality of service (QoS). In this paper, a dynamic hybrid CAC scheme with integrated cutoff priority and handoff queue for mobile cellular network is proposed and some performance metrics are derived. The unique characteristic of the proposed CAC scheme is that it can support any number of service types and that the cutoff thresholds for handoff calls are dynamically adjusted according to the number of service types and service priority index. Moreover, timeouts of handoff calls in queues are also considered in our scheme. By modeling the proposed CAC scheme with a one-dimensional Markov chain (1DMC), some performance metrics are derived, which include new call blocking probability ($P_{nb}$), forced termination probability (PF), average queue length, average waiting time in queue, offered traffic utilization, wireless channel utilization and system performance which is defined as the ratio of channel utilization to Grade of Service (GoS) cost function. In order to validate the correctness of the derived analytical performance metrics, simulation is performed. It is shown that simulation results match closely with the derived analytic results in terms of $P_{nb}$ and PF. And then, to show the advantage of 1DMC modeling for the performance analysis of our proposed CAC scheme, the computing complexity of multi-dimensional Markov chain (MDMC) modeling in performance analysis is analyzed in detail. It is indicated that state-space cardinality, which reflects the computing complexity of MDMC, increases exponentially with the number of service types and total channels in a cell. However, the state-space cardinality of our 1DMC model for performance analysis is unrelated to the number of service types and is determined by total number of channels and queue capacity of the highest priority service in a cell. At last, the performance comparison between our CAC scheme and Mahmoud ASH's scheme is carried out. The results show that our CAC scheme performs well to some extend.

• 한국산업정보학회논문지
• /
• 제19권5호
• /
• pp.103-115
• /
• 2014

최근 스마트 폰 등 이동단말기 사용이 급증함에 따라 국내/외 기업을 중심으로 언제 어디서나 일할 수 있는 스마트 오피스(Mobile-Office)가 빠르게 보급되고 있다. 스마트 워크가 부상하는 이유는 새로운 근무형태의 대두, 업무 효율성 제고, 스마트 폰 등 모바일 기반의 경제가 급성장하여 기업 환경이 변화하였기 때문이며, 이로 인해 일하는 방식의 변혁이 필요했던 것이다. 중소기업의 경우 최신 IT기술에 대한 활용능력이 대기업에 비해 상대적으로 부족하고, 개발 역량 및 자본 투자에 대한 한계가 존재하기 때문에 중소기업에 최적화된 개발 방법론 및 활용 방법이 필요한 실정이다. 신속하고 정확한 비즈니스 의사결정을 할 수 있는 모바일 환경에서의 비즈니스 인텔리전스 애플리케이션을 개발하였다. 스마트 오피스 이전 기업 환경에서의 문제점(접근성, 이동성, 효율성, 복잡성, 통합성)을 스마트 기기와 연동하여 해결하고, 중소기업의 입장에서 최소비용을 투자한 개발로 다양한 스마트 기기 및 웹 등에서 활용 가능한 애플리케이션의 효과적인 도입 방안을 모색하였다.

• 만화애니메이션 연구
• /
• 통권39호
• /
• pp.365-391
• /
• 2015

현대사회는 산업화사회와 정보화사회를 거쳐 문화중심사회로 이동하며 전통적인 체계가 해체되고 새로운 통념의 융합으로 탈경계화를 가속하며 확장돼 가고 있다. 문화콘텐츠 산업을 선도하고 있는 게임에서도 다양한 유형의 문화융합이 이뤄지고 있다. 특히 게임에서의 콜라보레이션(collaboration)은 부족한 콘텐츠를 대체하고 다른 게임과의 차별성을 가질 수 있다는 점에서 유용한 마케팅 수단으로 인식되며 다양한 형태로 활용되고 있다. 본 연구는 모바일 게임에서 활용되고 있는, 문화융합의 한 유형인 콜라보레이션 사례 조사를 통해 그 유형을 탐구하고, 나아가 이를 바탕으로 모바일 게임에서 활용되고 있는 콜라보레이션의 특성을 파악해 보는 것을 목적으로 한다. 이를 위해 2010년부터 2014년 기간 동안 국내외 모바일 게임에 활용된, 대표적 콜라보레이션 게임 사례를 대상으로 탐구하였는데 모바일 게임에서의 콜라보레이션은 아티스트와의 콜라보레이션, 캐릭터를 활용한 콜라보레이션, 상품과의 콜라보레이션과 같은 세 가지 유형으로 진행되고 있는 것을 확인하였다. 그리고 이 세 가지 유형 중에 캐릭터를 활용한 콜라보레이션 종류가 가장 많은 것을 알 수 있었는데 이들은 게임 간의 캐릭터 활용, 애니메이션의 캐릭터 활용, 만화 웹툰의 캐릭터 활용, 스타 활용, 위인 활용과 같은 다섯 가지 유형으로 추진되고 있었다. 그리고 이들 사례 탐구를 통해 모바일 게임에서의 콜라보레이션은 다음과 같은 다섯 가지 특성을 가지고 있다고 밝혔다. (1) 컨버전스형 융합으로 이종업종 간 콜라보레이션 사례가 많다. (2) 캐릭터를 활용한 콜라보레이션이 가장 활성화되어 있다. (3) 콜라보레이션에 사용된 콘텐츠의 소비 주 연령층이 게임의 주 타깃 연령층과 같다. (4) 인지도가 높은 요소를 채택해 콜라보레이션 하고 있다. (5) 게임의 위상과 파급력이 증가하였다. 본 연구는 모바일 게임 산업에서 문화융합의 한 유형인 콜라보레이션의 활용 방안을 수립하는 데 기여하는 한편, 관련 연구와 이론적 지평을 확대한다는 점에서 산업적으로나 학술적으로 중요한 의미를 가진다.

• 한국멀티미디어학회논문지
• /
• 제18권2호
• /
• pp.218-232
• /
• 2015

According to the development of information processing technology and mobile communication technology, the utilization of mobile banking systems is drastically increasing in banking system. In the foreseeable future, it is expected to increase rapidly the demands of mobile banking in bank systems with the prevalence of smart devices and technologies. However, the keeping 'security' is very important in banking systems that handles personal information and financial assets. But it is very difficult to improve the security of banking systems only with the vulnerabilities and faults analysis methods of information security. Hence, in this paper, we accomplish the analysis of security risk factor and security vulnerability that occur in mobile banking system. With analyzed results, we propose the information security control and management processes for assessing and improving security based on the mechanisms which composes mobile banking system.

• 디지털콘텐츠학회 논문지
• /
• 제14권2호
• /
• pp.125-134
• /
• 2013

소셜 네트워크 시스템의 발전과 통신기술의 발달로 인해 모바일 디바이스 사용자의 수는 나날이 증가하고 있다. 이로 인해 모바일 디바이스와 소셜 네트워크를 바탕으로 한 다양한 게임들이 개발되고 있다. 소셜 네트워크를 기반으로 한 모바일 게임의 대중적 인기는 남녀노소를 불문하고 증폭되고 있으며 그 시장성 역시 높이 평가되고 있다. 이 연구는 현재 가장 큰 인기를 얻고 있는 대표적 모바일 게임들을 선정하여 사례 연구와 인기 요인을 분석함으로써 소셜 네트워크와 모바일 디바이스를 활용한 교육용 콘텐츠 개발 가능성과 효율적인 활용 요소들을 제시하고자 한다.

• Agribusiness and Information Management
• /
• 제3권2호
• /
• pp.33-42
• /
• 2011

Although the diffusion of mobile services appears to be occurring much more rapidly than the spread of wired services, there are risks of a new type of digital divide: the mobile divide. The mobile divide, which refers to a specific digital divide that involves the unbalanced diffusion of mobile technologies, must be concretely studied. Thus, this study focuses on the mobile divide with respect to disadvantaged populations. Although various studies suggest that the diffusion of mobile devices may reduce the digital divide, somestudies argue against the positive effect of mobile devices in addressing traditional digital devices. Low and O'Connell (2006) insisted that equity of access to mobile technologies should be considered in the contextof the traditional digital divide; they argued that there may be socio-economic barriers to accessing mobile devices and the mobile Internet that are similar to the socio-economic barriers to accessing stationary computers and the stationary use of the Internet. Focusing on the smartphone divide, this study suggests that emphasizing utilization is an appropriate manner in which to bridge the mobile divide rather than focusing on other factors, such as accessibility and capability, thatprevious studies have used to measure the traditional digital divide.

• 한국정보시스템학회지:정보시스템연구
• /
• 제27권2호
• /
• pp.115-134
• /
• 2018

Purpose In recent years, mobile payment service users have been rapidly increasing. Previous researchers focused on the mobile usage situation such as the elements of mobile payment service, usage pattern, and user behaviors, and the research that is approached from the viewpoint of the user is still insufficient. The aim of this study is to suggest a acceptance-resistance motivation model of choosing a mobile payment service based on the Herzbergs Two-Factor Theory by investigating users' motivation and hygiene factors. Design/methodology/approach For the purpose, literature reviews on factors of choosing a mobile payment service were conducted and classified motivation and hygiene factors. Two hypotheses were set as follows: Hypothesis I is that motivation factors have a positive impact on the choice of mobile payment service, and Hypothesis II is that hygiene factors have a negative impact on the choice of mobile payment service. To test two hypotheses, this study conducted an online questionnaire survey and a multivariate discriminant analysis. Findings The result found that mobile payment service is more likely to be replaced with mobile by improving convenience, simplicity, and ease of use that affect the acceptance motivation of mobile payment service. This result supported the Hypothesis I but not Hypothesis II and contributed to provide implications for future mobile payment service development and marketing utilization.

• Educational Technology International
• /
• 제16권2호
• /
• pp.85-110
• /
• 2015

This study investigated whether college students' self-efficacy, learning strategy utilization, academic burnout, and school support predict course satisfaction and learning persistence. To this end, self-efficacy, learning strategy utilization, academic burnout, and school support were used as prediction variables; and course satisfaction and learning persistence, as criterion variables. The subjects were 178 students who registered for online and mobile "Culture and Art History" courses at K online university. They participated in an online survey. Multiple regression analysis revealed that self-efficacy and learning strategy utilization positively predicted course satisfaction and learning persistence, academic burnout negatively predicted them, and school support predicted neither. Accordingly, we suggest that raising self-efficacy and learning strategy utilization, and reducing academic burnout in the learning environment will improve the course satisfaction and learning persistence of online learners.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
• /
• pp.813-820
• /
• 2008

We have developed inventory database program which is available in the mobile PC. The mobile PC is convenient in terms of portability, data input, modification, practicality of various program and data confirmation in site. By utilizing the inventory database program in mobile PC, we are able to complete database in site. Then, database is converted into the Hangul document and Excel worksheet. Also, based on the above procedure, effective management and utilization of inventory on cut-slope can be achieved.