• Title/Summary/Keyword: Communication Model

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A Study on the Application Service of 3D BIM-based Disaster Integrated Information System Management for Effective Disaster Response (효과적인 재난 대응을 위한 3차원 BIM 기반 재난 통합정보 시스템 활용 서비스 제시)

  • Kim, Ji-Eun;Hong, Chang-Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.10
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    • pp.143-150
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    • 2018
  • Periodic and systemic disaster management has become more important than ever owing to the recent continuous occurrence of disasters, such as fires, earthquakes, and flooding. This management goes beyond simple disaster preparedness, which was introduced minimally under the existing legal system. For effective disaster management, facilities should be managed through regular maintenance on a daily basis, and in the case of an emergency, intuitive and accurate communication is essential regarding the situation and purpose. BIM manages the entire building property data using the effective 3D visualization model, so it can be used for various management purposes from design to facility maintenance. In this study, through an expert survey on the use of services in a BIM-based integrated disaster information system, the available areas of BIM data were organized in terms of facility information management, 3D visualization, and disaster control. Later, through the use service and DB definition within the BIM-based disaster integration information system, the main facilities monitoring and response services based on BIM and BIM-based spatial management service are proposed. Based on this study, it is hoped that the BIM-based application service functions within the system will be implemented to enable an effective system response.

Data Congestion Control Using Drones in Clustered Heterogeneous Wireless Sensor Network (클러스터된 이기종 무선 센서 네트워크에서의 드론을 이용한 데이터 혼잡 제어)

  • Kim, Tae-Rim;Song, Jong-Gyu;Im, Hyun-Jae;Kim, Bum-Su
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.7
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    • pp.12-19
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    • 2020
  • The clustered heterogeneous wireless sensor network is comprised of sensor nodes and cluster heads, which are hierarchically organized for different objectives. In the network, we should especially take care of managing node resources to enhance network performance based on memory and battery capacity constraints. For instances, if some interesting events occur frequently in the vicinity of particular sensor nodes, those nodes might receive massive amounts of data. Data congestion can happen due to a memory bottleneck or link disconnection at cluster heads because the remaining memory space is filled with those data. In this paper, we utilize drones as mobile sinks to resolve data congestion and model the network, sensor nodes, and cluster heads. We also design a cost function and a congestion indicator to calculate the degree of congestion. Then we propose a data congestion map index and a data congestion mapping scheme to deploy drones at optimal points. Using control variable, we explore the relationship between the degree of congestion and the number of drones to be deployed, as well as the number of drones that must be below a certain degree of congestion and within communication range. Furthermore, we show that our algorithm outperforms previous work by a minimum of 20% in terms of memory overflow.

QR code as Interactive Marketing Communication Media : Focused on Technology Acceptance Model (인터랙티브 마케팅커뮤니케이션 매체로써 QR코드 이용에 관한 연구 : 기술수용모델을 중심으로)

  • Shin, Dong-Hee;Chang, Woo Sung
    • The Journal of the Korea Contents Association
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    • v.13 no.3
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    • pp.76-86
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    • 2013
  • This study examined users' acceptance process with the QR code as an interactive marketing communications tool. We collected total 200 survey data and 181 questionnaires among them were used for the analysis during for five days, from 9 to 13 in May 2011. The first research question of this study examined the relationship among subjective norms, perceived usefulness, perceived ease of use, attitudes, and intention to use through the structural equation modeling analysis. The result of the first research showed that subjective norms about the use of QR code affect intention to use via perceived usefulness, and also directly influence on it. The perceived usefulness has the biggest impact on the intention to use. The research question 2 was to look at the condition effect with the presence of experience. As the analysis result of the second research question, the relationships between subjective norms and perceived usefulness are not different whether or not groups experience QR code, and both groups appeared to have had significant impact. Whereas the relationship between subjective norms and intention to use showed a significant influence on the population that has the experience with the QR code. In order to encourage use of the QR code, therefore, we will need to highly impress on users subjective norms which are ambient pressure on the use of QR code and positively offer marketing strategy which gives users the opportunities to get experience with the QR code.

Analysis of Data Characteristics by UAV LiDAR Sensor (무인항공 LiDAR 센서에 따른 데이터 특성 분석)

  • Park, Joon-Kyu;Lee, Keun-Wang
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.5
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    • pp.1-6
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    • 2020
  • UAV (Unmanned Aerial Vehicles) are used widely for military purposes because they are more economical than general manned aircraft and satellites, and have easy access to the object. Recently, owing to the development of IT technology, UAV equipped with various sensors have been released, and their use is increasing in a wide range of fields, such as surveying, agriculture, meteorological observation, communication, broadcasting, and sports. An increasing number of studies and attempts have made use of it. On the other hand, existing research was related mostly to photogrammetry, but there has been a lack of analytical research on LiDAR (Light Detection And Ranging). Therefore, this study examined the characteristics of a UAV LiDAR sensor for the application of a geospatial information field. In this study, the performance of commercialized LiDAR sensors, such as the acquisition speed and the number of echoes, was investigated, and data acquisition and analysis were conducted by selecting Surveyor Ultra and VX15 models with similar accuracy and data acquisition distances. As a result, a DSM of each study site was generated for each sensor, and the characteristics of data density, precision, and acquisition of ground data from vegetation areas were presented through comparison. In addition, the UAV LiDAR sensor showed an accuracy of 0.03m ~ 0.05m. Hence, it is necessary to select equipment considering the characteristics of data for effective use. In the future, the use of UAV LiDAR may be suggested if additional data can be obtained and analyzed for various areas, such as urban areas and forest areas.

Art and Collectivity (미술과 집단성)

  • Kwok, Kian-Chow
    • The Journal of Art Theory & Practice
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    • no.4
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    • pp.181-202
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    • 2006
  • "When it comes to art, nationalism is a goodticket to ride with", says the title of a report in the Indian Express (Mumbai, 29 Oct 2000). The newspaper report goes on to say that since Indian art was kept "ethnic" by colonialism, national liberation meant opening up to the world on India's own terms. Advocacy, at the tail end of the 20th century, would contrast dramatically with the call by Rabindranath Tagore, the founder of the academy at Santiniketan in 1901, to guard against the fetish of nationalism. "The colourless vagueness of cosmopolitanism," Tagore pronounced, "nor thefierce self-idolatry of nation-worship, is the goal of human history" (Nationalism, 1917). This contrast is significant on two counts. First is the positive aspect of "nation" as a frame in art production or circulation, at the current point of globalization when massive expansion of cultural consumers may be realized through prevailing communication networks and technology. The organization of the information market, most vividly demonstrated through the recent FIFA World Cup when one out of every five living human beings on earth watched the finals, is predicated on nations as categories. An extension of the Indian Express argument would be that tagging of artworks along the category of nation would help ensure greatest reception, and would in turn open up the reified category of "art," so as to consider new impetus from aesthetic traditions from all parts of the world many of which hereto fore regarded as "ethnic," so as to liberate art from any hegemony of "international standards." Secondly, the critique of nationalism points to a transnational civic sphere, be it Tagore's notion of people-not-nation, or the much mo re recent "transnational constellation" of Jurgen Habermas (2001), a vision for the European Union w here civil sphere beyond confines of nation opens up new possibilities, and may serve as a model for a liberated sphere on global scale. There are other levels of collectivity which art may address, for instance the Indonesian example of local communities headed by Ketua Rukun Tetangga, the neighbourhood headmen, in which community matters of culture and the arts are organically woven into the communal fabric. Art and collectivity at the national-transnational level yield a contrasting situation of, on the idealized end, the dual inputs of local culture and tradition through "nation" as necessary frame, and the concurrent development of a transnational, culturally and aesthetically vibrant civic sphere that will ensure a cosmopolitanism that is not a "colourless vagueness." In art historical studies, this is seen, for instance, in the recent discussion on "cosmopolitan modernisms." Conversely, we may see a dual tyranny of a nationalism that is a closure (sometimes stated as "ethno-nationalism" which is disputable), and an internationalism that is evolved through restrictive understanding of historical development within privileged expressions. In art historical terms, where there is a lack of investigation into the reality of multiple modernisms, the possibility of a democratic cosmopolitanism in art is severely curtailed. The advocacy of a liberal cosmopolitanism without a democratic foundation returns art to dominance of historical privileged category. A local community with lack of transnational inputs may sometimes place emphasis on neo-traditionalism which is also a double edged sword, as re kindling with traditions is both liberating and restrictive, which in turn interplays with the push and pull of the collective matrix.

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Impact of the Customer Orientation and Job Satisfaction as a Result of the Consultant's Emotional Exhaustion at the Call Center (콜센터 상담원의 감정소진이 고객지향성 및 직무만족에 미치는 영향)

  • Cho, Sang-Eun;Yang, Hae-Sool
    • The Journal of the Korea Contents Association
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    • v.10 no.6
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    • pp.386-403
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    • 2010
  • This research studied the impact of the customer orientation and job satisfaction by lowering the desire of the kind for customers and the desire for fulfillment as a result of emotional exhaustion of the consultant who performs emotion labor at the call center. This research sets study model and hypothesis to verify that call center consultant's emotional exhaustion how to effect customer orientation and job satisfaction. We took questionnaires from 157 call center(financial institutes) consultant's in Seoul for the verification of the hypothesis. I show that the consultant's emotional exhaustion had negatively affected the customer orientation and job satisfaction. In this paper proposed the importance that the experience of the consultant's emotional exhaustion who is the main agent of the performance should be minimized by removing ad improving the factors to lower emotion exhaustion through lowering time pressure in the work performance reduce the consultant's emotional exhaustion, granting work autonomy and authority, and active support of relevant departments and the ongoing communication between the managers and consultant This study makes a significant meaning in that it proposed the consultant's emotional exhaustion was negative factor on the customer orientation and job satisfaction factor in operating call center worker.

A Study on Efficient Access Point Installation Based on Fixed Radio Wave Radius for WSN Configuration at Subway Station (지하철 역사 내 WSN 환경구축을 위한 고정 전파범위 기반의 효율적인 AP설치에 관한 연구)

  • An, Taeki;Ahn, Chihyung;Lee, Youngseok;Nam, Myungwoo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.7
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    • pp.740-748
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    • 2016
  • IT and communication technologies has contributed significantly to the convenience of passengers and the financial management of stations in accordance with the task automation in the field of the urban railway system. The foundation of the above development is based on the large amounts of data from various sensors installed in railways, trains, and stations. In particular, the sensor network that is installed in the station and train has played an important role in the railway information system. The performance of AP is affected by the number of APs and their locations installed in the station. In the installation of APs in stations, the intensity of the radio wave of the AP on its underlying position is considered to determine the number and position of APs. This paper proposes a method to estimate the number of APs and their position based on the structure of the underlying station and implemented a simulator to simulate the performance of the proposed method. The implemented simulator was applied to the decision of AP installation at Busan Seomyeon station to evaluate its performance.

Church's Cognition and Christian Counseling in Luther's Church in Korea (한국 루터교회 평신도의 교회인식과 기독교 상담)

  • Kim, Ock-Jin
    • The Journal of the Korea Contents Association
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    • v.18 no.10
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    • pp.194-202
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    • 2018
  • This study was designed to analyze the impact of Christian counseling for the common faith and religious wellbeing within the Korean Luther Church, and to provide church growth factors based on the results. The study target was based on the survey results of a total of 83 members who were attending layman in the ${\bigcirc}{\bigcirc}{\bigcirc}$ church, which is affiliated with the Korean Lutheran Church. The research tool used NCD questionnaire for church health diagnosis by the Korea Church Growth Institute for the church growth model and the reliability of Cronbach's ${\alpha}$ in this study was 0.91. The collected questionnaire was tested for correlation to verify the relationship between church development and growth, and for multiple recursive analysis to confirm factors affecting church development and growth. The results showed that church's services, programs, and atmosphere were highly correlated with development of church, including counseling. The research showed that the relationship between church services, programs, and friends, including counseling, was highly correlated with spiritual growth and self-growth, while community activities and mutual communication were low. Therefore, for continuous church growth, the importance of community programs in the church is considered necessary.

The Effect of Social Trust on Risk Perception : Focused on the Seoul Citizens' Perception (사회신뢰가 위험인식에 미치는 효과 : 서울시민의 인식을 중심으로)

  • Lee, Jae-Wan
    • The Journal of the Korea Contents Association
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    • v.18 no.10
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    • pp.518-526
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    • 2018
  • The purpose of this study is to analyze the effect of social trust on risk perception. In other words, I tried to analyze empirically how the generalized trust about other people they have based on subjective perception of Seoul citizens affects the perception of risk factors. First, the risk factors that Seoul citizens face in everyday life are classified into five categories: natural disaster, technical disaster risk, economic risk, social disintegration risk and health risk. Then, the influence of social trust on each of these risk perception was analyzed by multiple regression model. The results show that social trust has a statistically significant negative impact on all types of risk perception. These results imply that social trust makes low-risk assessments of various risk factors around people. The implication of this study is that the responsibility for risk is given to the central and local governments in the modern risk society. In order to prevent effective risk, it is necessary to make efforts to promote social trust through various activities together with efforts to prevent the spread of unfounded risk will be. And trust among people also promotes cooperation in coping with risks, so it is necessary to promote communication and mutual understanding that can build trust among people in their daily life.

The introductory study for MIMO techniques over satellite systems

  • Kang, Yeon-Su;Kang, Kun-Suk;Ahn, Do-Seob
    • Journal of Satellite, Information and Communications
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    • v.2 no.2
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    • pp.80-84
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    • 2007
  • In this paper, the introductory study of the multi input multi output (MIMO) techniques for satellite communication systems is presented. Because of the advantage of wide coverage of satellite, it has been considered for broadcasting services and fill-in services. On the other hand, state of the art multi input multi output (MIMO) techniques such as space time code (STC) and spatial multiplexing (SM) makes the terrestrial system increase link performance and their coverage, and also increase the link throughput. For these regard, in order to satisfy the requirements of the next generation communications and coexists with terrestrial systems harmoniously, the studying about satellite MIMO techniques is necessary. In this paper, we introduce some system model and scenarios to apply MIMO technique to intermediate module repeater (IMR). The possibility of these techniques and technical requirements are also considered. Especially, Space time code is used to enhance IMRs coverage and increase the link performance, and space time multiplexing is utilized to multiplex satellite broadcasting signals with local broadcasting signal in IMR cell.

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