• 대한디지털의료영상학회논문지
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• 제13권4호
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• pp.171-175
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• 2011

Server and Pi view management, external image and internal image Copy Import business in PACS room is through the medical assistance. Import and Copy, and in particular the number of cases is increasing the number of import is a fast growing trend. Although the increase in workload With limited human resources to increase business efficiency so Remote system is using PACS room. This remote system will want to evaluate the effectiveness of using the service. Amount of data each 437.5 MB, Copy and Import time is to compare and evaluate sees by use 1 PC. 4 PC, 4 PC+ remote system. The use of the remote system before the January 2010 to June daily average waiting time and the use of the remote system after the January 2011 to June compared to a daily average patient waiting time, evaluate. Using the remote system in January 2011 to June Find out the average remote utilization. The biggest difference on the four copy and eight continued, Were performed two times faster by use 4 PC+ remote system than use 4 PC and four times faster than use 1 PC. Before using the remote system, the daily average wait time is 14.5 minutes after using the daily average 10.2 minutes, waiting time 30% of the existing waiting time was 4.3 minutes, to reduce. Using the remote system in January 2011 to June the average daily number of cases is 107 number and The number of remote and on average 35 cases with 32% in a day remote usage. The use of the remote system to Import, CD Copy and greatly increase the efficiency of their time could be. Hours due to efficiency could also reduce customer waiting time. As a result, the manpower and the use of a remote system over time to maximize efficiency in business hours, work was evaluated by.

• 대한원격탐사학회지
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• 제36권5_4호
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• pp.1195-1207
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• 2020

GeoWeb 기술이 발전하면서 재난관리 분야에서도 웹을 통한 2D/3D 공간정보 서비스에 대한 관심과 활용도가 높아지고 있다. 본 논문은 재난사고 현장에서 수집된 다양한 공간정보를 웹 환경에서 시각화하기 위한 3D 공간정보 맵핑 플랫폼 구축에 관한 연구로서, 웹 개발 표준기술인 HTML5/WebGL과 오픈소스를 활용하여 재난사고 현장에서 다양한 형태로 수집된 2D/3D 공간 데이터와 대용량의 LiDAR 점군 데이터에 대한 웹기반의 공간정보 맵핑 서비스 방안을 제시하였다. 첫째, 오픈소스인 GeoServer의 WMS 서비스와 PostGIS를 이용하여 수집된 재난현장 조사 2D 데이터를 공간 DB로 구축한 후 웹 환경에서 렌더링하였다. 둘째, 웹 환경에서 대용량 3D 점군 데이터를 효율적으로 렌더링하기 위하여 다중 해상도의 옥트리 구조를 이용하여 점군 데이터를 2D 타일로 단순화하는 Potree 알고리즘을 적용하였다. 마지막으로 OpenLayers3를 기반으로 3차원 지도를 제어 및 측정하기 위한 기본·응용 기능을 Graphic User Interface(GUI)로 구현하여 2D/3D 공간정보의 웹 시각화를 위한 3D 웹 맵핑 파일럿 시스템을 개발하였다. 향후, 재난현장의 각종 2D 조사 데이터 및 다양한 공간영상정보를 구축된 웹기반 3차원 공간정보시스템에 중첩·표출함으로써 재난사고 과학조사 및 분석 업무에 활용될 수 있을 것으로 기대된다.

• Journal of information and communication convergence engineering
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• 제5권2호
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• pp.144-149
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• 2007

Grid technologies make it possible for IT resources to be shared across organizational and security domains. The traditional identity-based access control mechanisms are unscalable and difficult to manage. Thus, we propose the FAS (Federation Agent Server) model which is composed of three modules: Certificate Conversion Module (CCM), Role Decision Module (RDM), and Authorization Decision Module (ADM). The proposed FAS model is an extended Role-Based Access Control (RBAC) model which provides resource access capabilities based on roles assigned to the users. FAS can solve the problem of assigning multiple identities to a shared local name in grid-map file and mapping the remote entity's identity to a local name manually.

• 대한임베디드공학회논문지
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• 제7권6호
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• pp.301-309
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• 2012

In this paper, a real-time monitoring system based on WSN is designed and implemented to monitor livestock growth environment information which includes the temperature, humidity and harmful gases such as $CO_{2},\;CO,\;NH_{3},\;H_{2}S$ and so on. The proposed system consists of the wireless sensor nodes, the monitoring management device, the management server and the user interface program based on PC/Smart phone. To verify the performance of the implemented system, gas measurement experiments are performed in laboratory environment by using the designed wireless sensor nodes. And it is able to estimate the concentration of gases. The implemented system is able to monitor the proposed environmental element information through the developed GUI.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2000년도 춘계학술대회
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• pp.55-60
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• 2000

In recent dates, Internet advertising effects are expanded by the steep increment of the Internet users and the extension of the advertising market will be accelerated through Internet. This paper indicates the importance of Internet advertising and suggests the solution of a network advertising service. The system Is divided into an Advertise Server, an Advertiser and a Web Publisher. This study proposes both the collection and the analysis of traffic data in real time. Also, the banner advertising frames are smoothed for the impression using the solution for the banner exchange engine and are developed using various impression methods, that is, Fixed/variable Banner, Scheduling Banner, Multi-Impression Banner, and Frame Remote Control to increase the advertising effect. And then to increase the advertising effect web publisher, which is specialized in lottery site, is constructed using the network advertising service and various advertising technology.

• 연구논문집
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• 통권28호
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• pp.239-246
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• 1998

Today’s information technology departments face a dilemma to create a competitive advantage for the organization by developing. deploying, and managing distributed applications that scale across the LAN, WAN, and Internet, while preserving investments in systems. Applications, information. IT organizations are today being asked to build the future, without breaking systems that maintain the current business. A possible answer to this dilemma is the implementation of a multi-tier distributed computing architecture. Multi-tier architecture has the potential to provide better, more timely information across the enterprise at a lower cost than the current combination of PC LAN, two-tier client/server, or mainframe applications that have been developed in most organizations. In this paper, we implement management information system based on distributed object middleware using multi-tier distributed computing architecture. This system uses Microsoft's implementation of DCOM/ActiveX and provides easily accessible web interface to the system users.

• 대한안전경영과학회지
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• 제2권2호
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• pp.177-185
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• 2000

In recent dates, Internet advertising effects are expanded by the steep increment of the Internet users and the extension of the advertising market will be accelerated through Internet. This paper indicates the importance of Internet advertising and suggests the solution of a network advertising service. The system is divided into an Advertise Server, an Advertiser and a Web Publisher. This study proposes both the collection and the analysis of traffic data in real time. Also, the banner advertising frames are smoothed for the impression using the solution for the banner exchange engine and are developed using various impression methods, that is, Fixed/variable Banner, Scheduling Banner, Multi-Impression Banner, and Frame Remote Control to increase the advertising effect. And then to increase the advertising effect web publisher, which is specialized in lottery site, is constructed using the network advertising service and various advertising technology.

• Journal of Multimedia Information System
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• 제9권3호
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• pp.209-218
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• 2022

Industrial IoT applications, including smart factories, require two problem-solving to build data monitoring systems required by services from distributed IoT sensors (smart sensors). One is to overcome proprietary protocols, data formats, and hardware differences and to uniquely identify and connect IoT sensors, and the other is to overcome the problem of changing the server-side data storage structure and sensor data transmission format according to the addition or change of service or IoT sensors. The IEEE 1451.4 standard-based or IPMI specification-based smart sensor technology supports the development of plug-and-play sensors that solve the first problem. However, there is a lack of research that requires a second problem-solving, which requires support for the plug-in of IoT sensors into remote services. To propose a solution for the integration of these two problem-solving, we present a IoT sensor platform, a service system architecture, and a service plugin protocol for the MQTT-based IIoT application environment.

• 전자공학회논문지
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• 제49권9호
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• pp.379-385
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• 2012

본 논문에서는 생체신호계측 시스템과 안드로이드 기반의 모바일 플랫폼을 이용한 게이트웨이와 그리고 네트워크 서버를 통하여 사용자의 모바일 클라이언트로 생체 데이터를 전송하여 개인 건강관리를 위한 유헬스케어 시스템을 제안하였다. 생체신호 계측 시스템은 심전도, 산소 포화도, 혈압, 호흡 등의 계측 기술을 바탕으로 구현하였으며 계측된 각종 정보는 헤더와 데이터로 3바이트로 구성된 전송 프로토콜을 이용하여 모바일 게이트웨이로 전송하였다. 모바일 게이트웨이로 수신된 데이터는 네트워크 서버를 통하여 모바일 클라이언트에 개인의 건강지수를 확인하였다. 본 논문에서는 제안한 안드로이드 기반의 게이트웨이와 클라이언트 그리고 방송형 네트워크 서버를 구현하고 실험하여 그 타당성을 가상실험 및 실제 사람을 통하여 검증하였다. 그 결과 제안한 유헬스케어 시스템은 근거리 및 원거리에서 개인의 건강을 관리하는 데 효과적임을 보였으며 개인의 실시간으로 건강상태를 확인할 수 있었으며 보호자의 이동성을 보장 할 수 있는 장점을 보였다.

• 공학교육연구
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• 제3권1호
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• pp.27-41
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• 2000

최근 인터넷을 기반으로 일반 사용자들에게 멀티미디어 정보를 이용하여 효과적인 교육수단을 제공하려는 연구가 활발히 진행되고 있다. 그 대표적인 예가 원격교육, 가상대학 등으로 이른 위주의 일반 교과 과목에 대한 교육은 많이 시도되고 있으나 공학 분야의 실험실습 교육을 위한 경우는 비교적 적은 편이다. 본 논문에서는 인터넷을 바탕으로 한 실험실습 교육의 일환으로 기계, 전자, 화학 등 공학분야의 가상 실험실습실을 지원하기 위해 구축한 기반시스템에 대해 소개한다. 여기에 도입된 가상 실험실의 모델로 클라이언트/서버 방식을 기초로 하여 서버에서 시뮬레이터가 수행되고 클라이언트를 통해 결과를 볼 수 있는 시뮬레이티브 방식이 먼저 논의되고, 이와는 달리 사용자가 초기에 한번 관리 서버를 경유한 이후로는 별도의 실습서버와 직접 통신하며 실험실습의 결과뿐 아니라 진행 상태도 영상으로 볼 수 있는 인터랙티브 방식이 소개된다.