• Title/Summary/Keyword: Management of server system

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A Study on Secure Contents Transer Based on Home Network (홈 네트워크 기반의 안전한 콘텐츠 전송에 관한 연구)

  • Jung, Young-Hun;Lee, Chang-Bo;Jun, Moon-Seog;Lee, Kwang-Hyoung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.5
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    • pp.1114-1121
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    • 2007
  • Home networks is a network composed of devices in home and is being expanded by evolving devices. Also, The number of digital contents in home network has been increasing steadily. But it is difficult to continually protect the rights of digital contents due to lack of interoperability among contents devices. Besides, a license has to be re-issued by DRM sever for contents transfer between devices. Thus, this paper proposes framework which can freely transfer the contents to another device through mutual device authentication and a system that can decrease overload of license management of the DRM server and that enable users outside home network to use contents through user authentication.

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Development of Server-Based Multi-User Sharing System for Time Table Management (서버 기반의 다중 사용자간 공유가 가능한 시간표 관리 시스템의 개발)

  • Im, Hae-Na;Kim, Go-Eun;Kim, Ji-Won;Lee, Jung-In;Park, Sangsoo
    • Proceedings of the Korea Information Processing Society Conference
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    • 2014.11a
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    • pp.333-335
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    • 2014
  • 스마트폰의 보급에 따라 사용자간에 공유되는 정보가 점점 늘어나고 있다. 시간표 관리 시스템의 경우 과거에는 개별 사용자의 시간표를 관리하는 것이 주요 기능이었으나, 사용자간의 시간표를 비교함으로써 공통으로 가능한 비어있는 시간을 찾는 등 공유 기능에 대한 필요성이 증대되고 있다. 본 논문에서는 이화여대 학생들에게 특화된 편의성과 공유기능을 제공하는 시간표 관리 어플리케이션과 서버 프로그램을 설계하고 개발한다. 제공되는 편의성으로는 사용자가 자신의 시간표를 직접 입력하는 것이 아니라 이화 포탈(eportal.ewha.ac.kr)에서 내 시간표 정보를 자동으로 바로 받아 볼 수 있는 기능과 관련 교과목의 담당교수와 강의실 등의 추가적인 정보가 같이 저장되도록 하여 시간표 작성 시간이 획기적으로 줄일 수 있도록 한다. 또한 모든 사용자가 계정을 등록하여 타 사용자와 함께 듣는 수업과 공강 시간을 자동으로 계산해서 보여주는 공유 기능을 제공한다. 사용자 피드백을 통한 본 논문에서 개발된 시스템을 평가한 결과 편의성과 공유 기능에 만족함을 확인하였다.

An Authentication Management using Biometric Information and ECC in IoT-Edge Computing Environments (IoT-EC 환경에서 일회용 생체정보와 ECC를 이용한 인증 관리)

  • Seungjin Han
    • Journal of Advanced Navigation Technology
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    • v.28 no.1
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    • pp.142-148
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    • 2024
  • It is difficult to apply authentication methods of existing wired or wireless networks to Internet of Things (IoT) devices due to their poor environment, low capacity, and low-performance processor. In particular, there are many problems in applying methods such as blockchain to the IoT environment. In this paper, edge computing is used to serve as a server that authenticates disposable templates among biometric information in an IoT environment. In this environment, we propose a lightweight and strong authentication procedure using the IoT-edge computing (IoT-EC) system based on elliptic curve cryptographic (ECC) and evaluate its safety.

Urban Runoff Management System Using Ubiquitous Floater (Ubiquitous Floater를 이용한 도시 배수 관리 시스템)

  • Yi, Jae-Eung;Choi, Chang-Won
    • Proceedings of the Korea Water Resources Association Conference
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    • 2008.05a
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    • pp.603-607
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    • 2008
  • 최근 이상기후현상으로 인한 가뭄과 홍수의 빈번한 발생으로 인해 인명 및 재산피해가 증대되고 있다. 특히 도시지역에서의 홍수 피해가 심각한 상황이다. 도시지역에서는 불투수 면적의 증가로 우수 유출량의 대부분을 배수관망에 의존하고 있다. 그럼에도 불구하고 현재 배수관거에 대한 관리는 미흡한 실정으로 노후되거나 부실한 배수관을 통해 토양으로 누수되거나, 관로 내에 누적된 퇴적물로 인한 관경의 축소 등으로 인해 우수가 원활하게 배제되지 못하고 지체되면서 인근지역의 침수피해를 증가시키고 있다. 이러한 피해를 경감시키기 위해서 지속적이고 신뢰성 있는 배수관 내 유황자료의 획득이 시급한 상황이다. 그러나 현재 수집되고 있는 도시지역의 배수 자료는 하천유황자료에 편중되어있으며, 배수관망 자료는 배수관망 내 유황자료의 획득이 어렵고, 배수관망 내에서 흐름의 경로 파악이 불가능 하다는 문제점을 가지고 있다. 본 연구에서는 도시 배수관망에 대한 지리정보시스템의 자료와 ubiquitous floater로부터 획득한 유황자료를 결합하여 도시 배수 관리 시스템을 구축하는 것에 목적을 두었다. 도시 배수 관리 시스템에서는 bluetooth 무선통신 기술을 이용한 ubiquitous floater를 사용하여 배수관망 내의 유속과 흐름 경로를 측정하고, 측정된 실시간 수문자료는 CDMA 무선통신모듈을 이용하여 server 컴퓨터에 전송된다. 수집된 자료는 대상유역의 지리정보시스템의 자료와 결합하여 도시 배수 관리 시스템으로 구축된다. 도시 배수 관리 시스템은 관리자가 배수관의 특성을 파악하고 문제발생시 신속하게 조치할 수 있게 도움을 줄 수 있으며, 전문적인 지식이 없는 누구나(whoever), 언제(whenever), 어디서(wherever)든 PC 앞에서 원거리에 위치한 도시 배수관망 내의 흐름 경로를 파악하고 관망 내 흐름의 현황을 파악할 수 있다.

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The SLA Management System for Customer Quality Assurance (고객품질보증을 위한 SLA 관리시스템)

  • Ryu Yong-Sun;Lee Gil-Heang
    • Proceedings of the Korea Information Processing Society Conference
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    • 2006.05a
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    • pp.1267-1270
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    • 2006
  • 최근들어 초고속 통신망(xDSL, FTTH, Cable)을 이용하여 Head-End Server에서 가입자 댁내의 셋탑박스를 TV를 이용하여 멀티미디어(다채널 SD/HD 방송, VOD) 및 양방향 인터넷 연동 서비스(T-Portal, T-Communication) 등을 제공하는 것이 가능해 졌다. 더불어 고객들에게 인터넷을 통한 이 서비스의 품질을 보장하는 망 관리 관점에서의 기능도 필요하게 되었다. 고객들은 예전보다 더 나은 통신품질을 제공받기를 기대하고 있다. 따라서, 기존의 PE-to-PE 통신 품질 뿐만 아니라 CE-to-CE 통신 품질도 제공함으로써 고객체감품질 보증의 만족도를 향상시켜야 한다 본 논문에서는 IP 서비스(IPTV, VoIP 등)의 SLA에서 사용될 품질 지표에 관한 연구 및 PE-to-PE구간에서 부터CE-to-CE 구간 까지의 시스템 망 구성도, SLA 관리시스템에 관해 설명한다. 본 논문의 SLA 시스템에서는 가입자 댁내의 셋탑박스에 내장된 품질측정 Agent를 이용하여 통신품질 데이터를 측정한 후, 가공하여 SLA를 적용함으로써, 보다 정확한 고객체감품질 보증 및 고객에게 SLA의 신뢰성을 줄 수 있다. 또한, 서비스 제공자로 하여금 사전에 통신품질을 감시할 수 있는 기능을 제공함으로써 양질의 통신품질을 보장할 수 있도록 하는데 목적이 있다.

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System Development for Measuring Group Engagement in the Art Center (공연장에서 다중 몰입도 측정을 위한 시스템 개발)

  • Ryu, Joon Mo;Choi, Il Young;Choi, Lee Kwon;Kim, Jae Kyeong
    • Journal of Intelligence and Information Systems
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    • v.20 no.3
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    • pp.45-58
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    • 2014
  • The Korean Culture Contents spread out to Worldwide, because the Korean wave is sweeping in the world. The contents stand in the middle of the Korean wave that we are used it. Each country is ongoing to keep their Culture industry improve the national brand and High added value. Performing contents is important factor of arousal in the enterprise industry. To improve high arousal confidence of product and positive attitude by populace is one of important factor by advertiser. Culture contents is the same situation. If culture contents have trusted by everyone, they will give information their around to spread word-of-mouth. So, many researcher study to measure for person's arousal analysis by statistical survey, physiological response, body movement and facial expression. First, Statistical survey has a problem that it is not possible to measure each person's arousal real time and we cannot get good survey result after they watched contents. Second, physiological response should be checked with surround because experimenter sets sensors up their chair or space by each of them. Additionally it is difficult to handle provided amount of information with real time from their sensor. Third, body movement is easy to get their movement from camera but it difficult to set up experimental condition, to measure their body language and to get the meaning. Lastly, many researcher study facial expression. They measures facial expression, eye tracking and face posed. Most of previous studies about arousal and interest are mostly limited to reaction of just one person and they have problems with application multi audiences. They have a particular method, for example they need room light surround, but set limits only one person and special environment condition in the laboratory. Also, we need to measure arousal in the contents, but is difficult to define also it is not easy to collect reaction by audiences immediately. Many audience in the theater watch performance. We suggest the system to measure multi-audience's reaction with real-time during performance. We use difference image analysis method for multi-audience but it weaks a dark field. To overcome dark environment during recoding IR camera can get the photo from dark area. In addition we present Multi-Audience Engagement Index (MAEI) to calculate algorithm which sources from sound, audience' movement and eye tracking value. Algorithm calculates audience arousal from the mobile survey, sound value, audience' reaction and audience eye's tracking. It improves accuracy of Multi-Audience Engagement Index, we compare Multi-Audience Engagement Index with mobile survey. And then it send the result to reporting system and proposal an interested persons. Mobile surveys are easy, fast, and visitors' discomfort can be minimized. Also additional information can be provided mobile advantage. Mobile application to communicate with the database, real-time information on visitors' attitudes focused on the content stored. Database can provide different survey every time based on provided information. The example shown in the survey are as follows: Impressive scene, Satisfied, Touched, Interested, Didn't pay attention and so on. The suggested system is combine as 3 parts. The system consist of three parts, External Device, Server and Internal Device. External Device can record multi-Audience in the dark field with IR camera and sound signal. Also we use survey with mobile application and send the data to ERD Server DB. The Server part's contain contents' data, such as each scene's weights value, group audience weights index, camera control program, algorithm and calculate Multi-Audience Engagement Index. Internal Device presents Multi-Audience Engagement Index with Web UI, print and display field monitor. Our system is test-operated by the Mogencelab in the DMC display exhibition hall which is located in the Sangam Dong, Mapo Gu, Seoul. We have still gotten from visitor daily. If we find this system audience arousal factor with this will be very useful to create contents.

Records Management and Archives in Korea : Its Development and Prospects (한국 기록관리행정의 변천과 전망)

  • Nam, Hyo-Chai
    • Journal of Korean Society of Archives and Records Management
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    • v.1 no.1
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    • pp.19-35
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    • 2001
  • After almost one century of discontinuity in the archival tradition of Chosun dynasty, Korea entered the new age of records and archival management by legislating and executing the basic laws (The Records and Archives Management of Public Agencies Ad of 1999). Annals of Chosun dynasty recorded major historical facts of the five hundred years of national affairs. The Annals are major accomplishment in human history and rare in the world. It was possible because the Annals were composed of collected, selected and complied records of primary sources written and compiled by generations of historians, As important public records are needed to be preserved in original forms in modern archives, we had to develop and establish a modern archival system to appraise and select important national records for archival preservation. However, the colonialization of Korea deprived us of the opportunity to do the task, and our fine archival tradition was not succeeded. A centralized archival system began to develop since the establishment of GARS under the Ministry of Government Administration in 1969. GARS built a modem repository in Pusan in 1984 succeeding to the tradition of History Archives of Chosun dynasty. In 1998, GARS moved its headquarter to Taejon Government Complex and acquired state-of-the-art audio visual archives preservation facilities. From 1996, GARS introduced an automated archival management system to remedy the manual registration and management system complementing the preservation microfilming. Digitization of the holdings was the key project to provided the digital images of archives to users. To do this, the GARS purchased new computer/server systems and developed application softwares. Parallel to this direction, GARS drastically renovated its manpower composition toward a high level of professionalization by recruiting more archivists with historical and library science backgrounds. Conservators and computer system operators were also recruited. The new archival laws has been in effect from January 1, 2000. The new laws made following new changes in the field of records and archival administration in Korea. First, the laws regulate the records and archives of all public agencies including the Legislature, the Judiciary, the Administration, the constitutional institutions, Army, Navy, Air Force, and National Intelligence Service. A nation-wide unified records and archives management system became available. Second, public archives and records centers are to be established according to the level of the agency; a central archives at national level, special archives for the National Assembly and the Judiciary, local government archives for metropolitan cities and provinces, records center or special records center for administrative agencies. A records manager will be responsible for the records management of each administrative divisions. Third, the records in the public agencies are registered in the computer system as they are produced. Therefore, the records are traceable and will be searched or retrieved easily through internet or computer network. Fourth, qualified records managers and archivists who are professionally trained in the field of records management and archival science will be assigned mandatorily to guarantee the professional management of records and archives. Fifth, the illegal treatment of public records and archives constitutes a punishable crime. In the future, the public records find archival management will develop along with Korean government's 'Electronic Government Project.' Following changes are in prospect. First, public agencies will digitize paper records, audio-visual records, and publications as well as electronic documents, thus promoting administrative efficiency and productivity. Second, the National Assembly already established its Special Archives. The judiciary and the National Intelligence Service will follow it. More archives will be established at city and provincial levels. Third, the more our society develop into a knowledge-based information society, the more the records management function will become one of the important national government functions. As more universities, academic associations, and civil societies participate in promoting archival awareness and in establishing archival science, and more people realize the importance of the records and archives management up to the level of national public campaign, the records and archival management in Korea will develop significantly distinguishable from present practice.

A Linear System Approach to Serving Gaussian Traffic in Packet-Switching Networks (패킷 교환망에서 가우스 분포 트래픽을 서비스하는 선형 시스템 접근법)

  • Chong, Song;Shin, Min-Su;Chong, Hyun-Hee
    • Journal of KIISE:Information Networking
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    • v.29 no.5
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    • pp.553-561
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    • 2002
  • We present a novel service discipline, called linear service discipline, to serve multiple QoS queues sharing a resource and analyze its properties. The linear server makes the output traffic and the queueing dynamics of individual queues as a linear function of its input traffic. In particular, if input traffic is Gaussian, the distributions of queue length and output traffic are also Gaussian with their mean and variance being a function of input mean and input power spectrum (equivalently, autocorrelation function of input). Important QoS measures including buffer overflow probability and queueing delay distribution are also expressed as a function of input mean and input power spectrum. This study explores a new direction for network-wide traffic management based on linear system theories by letting us view the queueing process at each node as a linear filter.

Implementation of a Sensor Network in a Welding Workplace Based on IoT for Smart Shipyards (스마트 조선소를 위한 사물인터넷 기반 용접 작업장 센서네트워크 구축)

  • Kim, Hyun Sik;Lee, Gi Seung;Kang, Seog Geun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.25 no.3
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    • pp.433-439
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    • 2021
  • In this paper, we propose a method to implement an IoT-based sensor network for each workplace of a shipyard. Here, at the most common welding workplace in shipyards, the shipbuilding blocks are used as a communication medium to transmit information such as the worker's location, welding progress, and working hour to a server using LoRa and powerline communication. To achieve the data communication, inductive couplers and hybrid modems have been manufactured and installed on wire feeders and pin jigs to establish a sensor network. As a result of field test, the proposed system shows a success rate of data transmission and a rate of successful recognition of worker's location of about 98% or more. In addition, the process management system platform can record and display the work process data generated at the field in real time. The proposed system can be a starting point for enhancing the competitiveness of Korean shipbuilding industry through the establishment of a smart shipyard.

Develop 3D Prostate Cancer Visualization Tool in Smart Care System (스마트 케어 시스템에서의 3차원 전립선 암 가시화 도구 개발)

  • Ahn, Byung Uk;Shin, Seung Won;Choi, Moon Hyung;Jung, Seung Eun;Kim, Kwang Gi
    • Journal of Korea Multimedia Society
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    • v.19 no.2
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    • pp.163-169
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    • 2016
  • In Korea, prostate cancer accounted for generating growth rate second the following thyroid cancer, because of western dietary habits. Survival rate of prostate cancer after clinical behavior is changed depend on follow-up management. A telemedicine have been applied to replacement of medical specialist in rural area, and a quick reaction to emergency situation. Our study developed prostate 3-dimensional (3D) visualization program and designed prostate aftercare system architecture, called smart care, using a device that can access the Internet. Region of interest (ROI) in prostate was manually segmented by physicians and visualized to 3D objects and sent to PACS Server as DICOM images. So, medical personnel could confirm patients' data along with 3D images not only PACS system, but also portable device like a smart phone. As a result, we conducted the aftercare service to 98 patients and visualize 3D prostate images. 3D images had advantage to instinctively apprehend where lesion is and make patients to understand state of their disease easily. In the future, should conduct an aftercare service to more patients, and will obtain numerical index through follow-up study to an accurate analysis.