• Title/Summary/Keyword: 휴대폰 활용

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The Development of Customer Satisfaction Model by Traffic Information Provision Media (교통정보 제공 매체별 이용자 만족도 모형 개발)

  • Hong, Ji-Yeon;Lee, Su-Beom;Im, Jun-Beom;Kim, Jang-Uk;Gang, Won-Ui
    • Journal of Korean Society of Transportation
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    • v.28 no.3
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    • pp.109-117
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    • 2010
  • The purpose of advanced traffic information system(ATIS) is to help drivers save time and energy in getting to their destinations by providing traffic information through variable message sign(VMS), internet, traffic broadcasting and mobile phones. ATIS does not just provide drivers with benefits in terms of time and energy, but it provides them with psychological benefit as well, i.e., the drivers can relieve their anxiety by getting provided with traffic information. In this study, the efficiency of traffic information system is evaluated and degree of satisfaction of drivers with the system is analyzed by building satisfaction models of various media of traffic information. Each medium has different factors for satisfaction and each factor has different degree of influence, but in general, the efficiency of traffic information in helping drivers choose routes and in providing drivers with peace of mind is considered to have the highest influence on satisfaction of drivers with the system.

A Design and Implementation of In/Out Bound Call Flow Module for SOHO CTI (SOHO CTI용 인/아웃바운드 콜 플로우 모듈 설계 및 구현)

  • Park Chan Il;Moon Seung-Jin
    • Journal of Internet Computing and Services
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    • v.6 no.3
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    • pp.71-84
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    • 2005
  • Recently, the expert call center solution has become the center of interest, since finance and tele-marketing system, which is focused on a communication industry, have been increasing, Specially, the call center market is growing up with a supporting Caller-ID for a cellular phone in Korea, In the present, although large size companies are developing expensive solutions and instruments to service only for the big companies, there little solutions for SOHO markets, Therefore, in this paper we have shown a design and an implementation of a CTI system which is capable of in/outbound call processing by using CTI, and providing stable services by linking the customer's DB. And these functionalities have become possible by integrating functions of PBX and the computer control of the PBX. First, we have constructed call flows and analyzed packets for the standard communication through the PBX in call. Then, we have designed and implemented a middleware which linked a call between a client and a customer. Finally, we have constructed a database module for applying the CRM technology to the management of customer's contents.

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Selective Inference in Modular Bayesian Networks for Lightweight Context Inference in Cell Phones (휴대폰에서의 경량 상황추론을 위한 모듈형 베이지안 네트워크의 선택적 추론)

  • Lee, Seung-Hyun;Lim, Sung-Soo;Cho, Sung-Bae
    • Journal of KIISE:Software and Applications
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    • v.37 no.10
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    • pp.736-744
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    • 2010
  • Log data collected from mobile devices contain diverse and meaningful personal information. However, it is not easy to implement a context-aware mobile agent using this personal information due to the inherent limitation in mobile platform such as memory capacity, computation power and its difficulty of analysis of the data. We propose a method of selective inference for modular Bayesian Network for context-aware mobile agent with effectiveness and reliability. Each BN module performs inference only when it can change the result by comparing to the history module which contains evidences and posterior probability, and gets results effectively using a method of influence score of the modules. We adopt memory decay theory and virtual linking method for the evaluation of the reliability and conservation of casual relationship between BN modules, respectively. Finally, we confirm the usefulness of the proposed method by several experiments on mobile phones.

A Study on Local Area Weather Condition Monitoring System in WSN and CDMA (무선센서네트워크와 CDMA망을 이용한 국지적 기상모니터링 시스템)

  • Chung, Wan-Young;Jung, Sang-Joong;Kim, Jong-Jin;Kwon, Tae-Ha
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.8
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    • pp.1713-1720
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    • 2009
  • An local area weather condition monitoring system to minimize many disasters from the sudden change of weather condition in local and mountain ales is proposed. Firstly, the comparison of present state of the related monitoring systems and the possibility of realization with some merits are investigated. Moreover, this paper present direction of local area weather condition monitoring system based on integration of wireless sensor network and CDMA network following some case study. The sensor node for wireless sensor network and an interface dongle are fabricated for the system. The stand-alone software in cellular phone is also developed. Through the efficient integration of both networks, the measured weather condition data from sensors can be transmitted to the server or mobile to monitor with high reliability. The proposed monitoring system will guide new type of project in wireless sensor network and support alarm service of the sudden change of weather condition to mobile user from central official regulations.

Study on the Preference of Readers as to Korean Internet Newspaper Sector (한국 인터넷신문 뉴스 분야 독자 선호도 조사 연구)

  • Park, Saeng-Kyu;Cho, Sung-Je
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.6 no.2
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    • pp.105-112
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    • 2013
  • This study is to understand difference in news preferences targeting internet newspaper readers across the country. 146 random readers were chosen for the survey from Oct. 17 to 18 in 2012. The analyses were based on job categories, genders, and ages. As the result of the analysis, students read the internet newspapers the most. According to gender and age, job category was also significant. Males were mostly studiers, then office workers, and professionals, and females were mostly students, then office workers, unemployed, and housewife. The research confirmed that internet newspaper readers read real-time news conveniently whenever, wherever. This suggests a theological basis for media policy by implying paid paper-based newspaper readers are shifting to free, internet-based newspapers using cellular phones.

Load Distribution Method based on Transcoding Time Estimation on Distributed Transcoding Environments (분산 트랜스코딩 환경에서 트랜스코딩 시간 예측 기반 부하 분산 기법)

  • Kim, Jong-Woo;Seo, Dong-Mahn;Jung, In-Bum
    • Journal of KIISE:Computer Systems and Theory
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    • v.37 no.4
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    • pp.195-204
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    • 2010
  • Due to improved wireless communication technologies, it is possible to provide multimedia streaming service for mobile device clients like PDAs and cellphones. Wireless networks are serviced on low bandwidth channels and mobile devices work on limited hardware specifications. In these conditions, transcoding technologies are needed to adapt the media for streaming services to given mobile environments. To transcode from the source media to the target media for corresponding grades, transcoding servers perform transcoding jobs as exhausting their resources. Since various transcoding loads occur according to the target transconding grades, an effective transcoding load balancing policy is required among transcoding servers. In addition to transcoding process, servers should maintain QoS streams for mobile clients for total serviced times. It requires real-time requirements to support QoS for various mobile clients. In this paper, a new transcoding load distribution method is proposed. The proposed method can be driven for fair load balance between distributed transcoding servers. Based on estimated transcoding time, movie information and target transcoding bit-rate, it provides fair transcoding load distribution and also performs admission control to support QoS streams for mobile clients.

Study on the Development of Congestion Index for Expressway Service Areas Based on Floating Population Big Data (유동인구 빅데이터 기반 고속도로 휴게소 혼잡지표 개발 연구)

  • Kim, Hae;Lee, Hwan-Pil;Kwon, Cheolwoo;Park, Sungho;Park, Sangmin;Yun, Ilsoo
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.17 no.4
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    • pp.99-111
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    • 2018
  • Service areas in expressways are very important facilities in terms of efficient expressway operation and the convenience of users. It needs a traffic management strategy to inform drivers in advance about congestion in service areas so as to distribute users of service areas. But due to the lack of sensors and data on numbers of people in the service areas, congestion in service areas had not been measured and managed appropriately. In this study, a congestion index for service areas was developed using telecommunication floating population big data. Two alternative indices (i.e., density of service areas and floating population V/c of service areas) were developed. Finally, the floating population V/c of service areas was selected as a congestion index for service areas for reasons of the ease of understanding and comparison.

A Study on the Global Diffusion through a Case for the Expansion of the T-DMB into Vietnam (지상파 DMB 베트남 진출 사례를 통한 T-DMB 글로벌 확산 연구)

  • Eun, Jong-Won;Park, Sung-Yul;Yoon, Dong-Sung
    • Journal of the Korean Academic Society of Industrial Cluster
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    • v.4 no.1
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    • pp.1-13
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    • 2010
  • The T-DMB which was developed by the convergence of digital broadcasting technology and communication technology provides us with very good quality of music like CD, and provides TV services in a super express train like the KTX whose velocity is over 300 Km per hour. The T-DMB is diffusing toward the world as a technology which is be able to provide the various convergent services of broadcasting and communication through mobile phone, PDA, dedicated terminal, and so on. A business model needed for the diffusion of the T-DMB toward the world was established and utilized to expand the T-DMB into Vietnam in the paper. In addition, this paper describes a case for the establishment of the T-DMB system in order to provide the paid services in Vietnam. It is expected that the expansion of the T-DMB into Vietnam will make a great contribution to the diffusion of the T-DMB toward the world.

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The Trends of Youth Research: 'Korean Journal of Youth Studies' in 2010-2018 (청소년 연구의 동향 : 2010년~2018년의 '청소년학연구'지를 중심으로)

  • Chang, Cin-Jae;Lee, Won-Jie
    • Journal of the Korea Convergence Society
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    • v.10 no.12
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    • pp.307-314
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    • 2019
  • This paper was intended to identify the knowledge structure of youth-related research by looking at the research trends of research papers published in Korean Journal of Youth Studies from 2010 to 2018. Using keywords extracted from the papers, the Centrality and Cohesion analysis of the keyword network analysis of the NetMiner program were used. In the analysis of degree centrality, the "relationship" was the highest, followed by schools and youth, and high in the order of parents and violence. In the analysis of betweenness centrality, the "relationship" was also the highest, followed by youth, school, need, education, parents, children, abuse/emotion(the same level), institutions, regions, cell phones/prevention/welfare(the same level), elementary, attachment, suicide, addiction, society, violence, children, services, support, policy/teachers(the same level). According to the cohesion analysis, school life and policy, addiction, parent & peer relations, civic education & welfare support, sentiment and thinking, college, abuse & suicide were divided into a total of seven sub-topic subjects.

Prediction of Joining Torque for Bit Depth of Subminiature Bolt (초소형 볼트의 비트 깊이에 따른 체결 토크 예측)

  • Lee, Hyun-Kyu;Park, Keun;Ra, Seung-Woo;Kim, Jong-Bong
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.38 no.8
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    • pp.917-923
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    • 2014
  • Subminiature joining bolts are required for the electronic parts of gadgets such as mobile phones and watch phones. During the miniaturization of bolt heads, it is difficult to obtain sufficient joining force owing to the risk of shear fracture of the bolt head or severe plastic deformation on the bit region. In this study, the maximum joining torque for the bit depth was predicted using finite element analysis. A shear fracture test was conducted on a wire used in bolt forming. The results of this test were subjected to finite element analysis and a fracture criterion was obtained by comparing the experimental and analysis results. The shear fracture of the bolt head during joining was predicted based on the obtained criterion. Furthermore, the maximum joining torque was predicted for various bit depths. Fracture on the boundary between the bolt head and thread was found to occur in lower joining torque as bit depth increases.