• 한국콘텐츠학회논문지
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• 제16권5호
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• pp.35-45
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• 2016

본 연구는 현재 사용 중인 모바일 동영상 서비스의 사용자 만족 향상을 위한 기초자료를 제공하고자 속성별 만족도를 조사하고 성별 및 연령에 따라 속성별 만족도와 전반적 만족도와의 관련성을 분석하여 모바일 동영상 서비스 만족도에 영향을 미치는 요인을 분석하는 것을 목적으로 하고 있다. 이를 위해 DMB와 모바일 동영상 서비스를 동시에 사용하는 362명의 사용자를 대상으로 모바일 동영상 서비스의 전반적 만족도에 영향을 미치는 요인들을 분석하였다. 또한 속성별 만족도와 전반적 만족도간 관계에 지상파콘텐츠 제공여부가 조절효과를 하는지를 분석하였다. 분석방법으로 빈도분석, 교차분석, t-test/F-test, 다중회귀분석, 조절회귀분석을 실시하였다. 연구결과 모바일 동영상 서비스 전반적 만족도에 영향을 미치는 요인으로는 콘텐츠 다양성, 화질, 재생품질, 이용편리성, 데이터 소모량 등 이었으며 성별, 연령별로 속성별 요인과 영향력에 있어서 차이가 있었다. 또한 지상파 콘텐츠 제공여부는 전반적 만족도에 영향을 미치는 결정변수 및 조절변수로 작용하지 않는 것으로 나타났다. 그러므로 만족도를 향상시키기 위해서는 반드시 지상파 콘텐츠를 제공하기 보다는 다양한 콘텐츠 제공과 UI/UX 개선 등 이용편리성을 개선해주는 것이 바람직한 방법임을 확인하였다. 이러한 결과를 바탕으로 시사점과 한계점을 제시하였다.

• 한국비블리아학회지
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• 제25권2호
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• pp.165-187
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• 2014

본 연구는 대학도서관 모바일 서비스에 대한 이용자의 경험을 일기를 통해 간접적으로 관찰함으로써 모바일 서비스를 이용하는 이용자들의 이용행동을 분석하고자 하였다. 이를 통해 대학도서관이 모바일 서비스를 구축하고 운영하는데 있어서 필수적인 이용자들에 대한 이해를 돕고 모바일 도서관 서비스에 대한 이용자들의 요구를 파악함으로써 대학도서관 모바일 서비스의 발전을 꾀하고자 하였다. 이를 위해 본 연구는 국내의 2개 대학도서관을 선정하고 대학생 20명에게 일주일 동안 매일 1회 이상 자관에서 제공하는 모바일 서비스를 이용해보고 이용 과정 및 생각들을 자세하게 일기에 작성하여 제출하도록 하였다. 수집된 총 137개의 일기는 귀납적 접근의 내용분석을 통해 분석되었으며, 정보요구, 정보요구 해결여부, 이용 서비스, 모바일 도서관 이용 과정 중에 보이는 정보행동과 장애요인을 파악하였다. 그리고 분석 결과를 기반으로 대학도서관 모바일 서비스의 개선 방안을 제시하였다.

• 한국정보시스템학회지:정보시스템연구
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• 제14권3호
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• pp.17-22
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• 2005

Location management is very important in location-based services to provide services to the mobile users like banking, city guides and many more. Ubiquitous and mobile devices are the source of data in location management and its significant operations are update and search method. Some studies to improve these were presented by using optimal sequential paging, location area scheme and hierarchical database scheme. In addition, not all location services have the same access methods on data and it lead to difficulties of providing services. A proposed location management of multi-agent architecture is presented in this study. It shows the coordination of the agents on the distributed database of location-based services. The proposal focuses on the location management of the mobile object presented in a hierarchical search and update. Also, it uses a nearest neighbor technique for efficient search method of mobile objects.

• 한국생활과학회지
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• 제19권2호
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• pp.325-341
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• 2010

A study on what kind of problems young consumers experience in buying and using mobile phone services with a comprehensive and consumers oriented perspective is needed. Through this acknowledgement, we investigated (i) the degree of consumer problems that young consumers experience in purchasing and using mobile phone services, and (ii) the related variables that affect experiences of this consumer problem. The parents of the teenagers were also included in the survey because they experience the same problems young consumers' experience in buying and using mobile phone services. Data were gathered through an internet survey (www.embrain.com) and a total of 699 samples from 350 parents and 349 youths using mobile phone services were analysed. The results are as follows. First, the teenagers and parents' experience level of young consumers' problems were generally high experiencing similar kinds of problems. Second, parents experienced more young consumers' problems than the teenagers in buying and using mobile phone services, especially in misuse and abuse of the phones. Third, among the teenagers, the monthly usage fee music or game usage, the number of changes in mobile phone service operators, the number of replacement mobile phones and the gender had a significant effect on consumers' problems of mobile phone services. Among the parents, the monthly usage fee, music or game usage, confirmation of the bill, and the gender of their child were significant consumer problems. Based on results of our survey the direction of consumer policy and education was suggested for teenagers and their parents.

• 한국IT서비스학회지
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• 제11권2호
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• pp.339-353
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• 2012

Mobile communication technology is advancing forward to deliver more connected devices and richer content and applications. The number of subscriptions continues to grow along with an explosive increase in the mobile data traffic demand. Thereby, it creates a significant network capacity shortage concerns for mobile network operators. In order to address this problem, it is essential to increase the network capacity at a low additional cost. The device-to-device (D2D) communication based proximity service is believed to have a promising future mobile communication technology that is capable to create new mobile service opportunities and offload traffic to the eNB. In addition, it is also required to develop new mobile communication services and its business models not only to accommodate the increasing mobile traffic demand but also to foster profitability of mobile business service providers such as the network providers, contents providers and platform providers. In this article, we first analyze current mobile business eco-system in the context of CPNT based value chain. Then, propose service development framework and business model creation methodologies for the device-to-device communication based services in the beyond LTE/LTE-Advanced systems.

• 한국전자거래학회지
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• 제25권3호
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• pp.15-40
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• 2020

모바일 애플리케이션 서비스 시장의 폭발적으로 성장함에 따라 애플리케이션 서비스를 고객과 개발자 관점에서 분류하는 것이 필요한 실정이다. 그러나 모바일 애플리케이션 서비스의 체계적 분류에 관한 연구는 제한적이다. 이에 본 연구에서는 네트워크 모듈성 분석을 통하여 모바일 애플리케이션 서비스의 분류하고 하위 카테고리를 제안하고자 한다. 구글플레이(GooglePlay)를 통해 총 1,607개의 헬스케어 관련 애플리케이션 서비스를 수집한 후 각 애플리케이션 서비스의 설명(description) 텍스트를 활용하여 유사도를 측정하고 이를 바탕으로 네트워크 분석을 수행하였다. 모듈성 분석을 수행하여 전체 네트워크의 커뮤니티를 탐지한 후, 각 클러스터를 기반으로 서비스 분류법을 도출한다. 이번 연구는 모바일 애플리케이션 서비스를 체계적으로 탐색하고자 하는 고객과 모바일 애플리케이션 서비스의 트렌드를 분석하고자 하는 개발자 모두에게 도움이 되는 서비스 분류에 대한 체계적인 접근방식이 될 것으로 기대된다.

• 한국학교ㆍ지역보건교육학회지
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• 제9권2호
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• pp.91-103
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• 2008

Objectives: This study was performed in order to evaluate the quality of health services provided to the adolescents at mobile health clinics and to improve the services for them, and to figure out knowledge level of adolescents on sex, birth control methods and artificial abortion, and the effect of the knowledge levels those items on sexual behavior. The data obtained will be utilized for sex health education program in the future. Methodology: A total of 2,021 adolescents who visited mobile sexual health clinics in Seoul, Inchon, Busan, Daejon, Cheonbuk, Kwangju and Daegu were surveyed in November 2007. The items surveyed were level of satisfaction about the services provided by mobile sexual health clinics, personal opinions and experience of artificial abortion, knowledge level about birth control, sexual experience and pregnancy. The above mentioned items were analyzed by general characteristics such as religion and geographical area. Results: The study subjects were generally satisfied with the services of mobile sexual health clinics. But they were not satisfied with the information about birth control methods provided by the clinics. The subjects who had better knowledge about sex were more satisfied with the services provided by the clinics. And the subjects who had knowledge about birth control methods but did not have birth control experience were also more satisfied with the services of clinics. The subjects who reported that artificial abortion should be allowed were also more satisfied with the services of the clinics. Experiences of sex, pregnancy, and artificial abortion were not correlated to satisfaction of the clinic services. Conclusions: The mobile sexual health clinics have to continues to provide sex health education and other sex related health services to adolescents. More practical information about birth control methods should be provided to the adolescents by the clinics based on the study results. Active preventive measures for unwanted pregnancy should be provided to the adolescents by the clinics.

• International Journal of Contents
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• 제2권2호
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• pp.29-31
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• 2006

Mobile Ad hoc network is a self configuring network of mobile nodes. It allows mobile nodes to configure network spontaneously and share their services. In these networks, service discovery is very important because all nodes do not have same resources in term of memory and computing power. Nodes need to use different services offered by different servers. Some service discovery protocols have been proposed in last couple of years but they include significant traffic overhead and for small scale MANETS. In this paper, we present extensible lookup service scheme based on distributed mechanism. In our scheme neighboring nodes of service provider monitor service provider and send notification to lookup server when the service provider terminates its services unexpectedly. Lookup server can find other service provider or other alternative services in advance because of advance notification method and can provide consistent lookup services. In our scheme neighboring nodes also monitor lookup server and send notification to network when lookup server terminates unexpectedly. Simulation results show that our scheme can reduce up to 70% and 30% lookup failure as compare to centralize and simple distributed mechanism respectively.

• Journal of information and communication convergence engineering
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• 제9권4호
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• pp.457-460
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• 2011

For the mobile meteorological services, sensed data should be gathered at a server from various clients like as Ubiquitous Sensor Network, mobile phone or public traffic vehicle by wireless network. The gathered data at server have huge volume and increase continuously. Therefore, a special query method and data structure should be considered. This paper studies on all possible query type on the data and processing steps for the mobile meteorological services. Some query spaces will be discussed. After that, this paper proposes effective data structure for the sensed data to support the query types.

• 디지털산업정보학회논문지
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• 제6권4호
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• pp.83-94
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• 2010

Mobile network infrastructure is being completed with the development of hardware and software for mobile devices. Network in mobile devices has evolved for telematics that is expanded much more than its existing concept. Telematics is compound word that is formed from the words "telecommunication" and "informatics". It means that telematics performs control and monitoring service with using mobile device resources. These services provide their services for users' requests through wired or wireless network from mobile devices and server that offers contents and network service collects management information of mobile devices. Map service is one of the preferred services for many telematics users. However, mobile map service has a limit between traffic and information sharing. Therefore it is very important to supply their information for both service provider and terminal user. In this paper, we design a new interactive sketch map using routes and information on the space to be applied effectively, and provide an extended document format that is defined to an extensible and dynamic clustering scheme to have portability map service for mobile device.