• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.9
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• pp.1132-1140
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• 2016

According to global trend, despite the overall scale of agricultural industry has been downsized, agriculture accommodating cutting-edge ICT technologies has been proliferated, and various timely-issued relevant researches have been on progress to deploy the future food cultivation. In this paper, we propose an effective nutrient management system with web-based monitoring with functionality of controlling temperature, humidity, pH (hydrogen ion), EC (Electric Conductivity), LED and cooling fan to maintain the hydroponic nurturing environment being optimal. In this paper, in order the arduino hardware and java software are employed to control the nurturing environment automatically in optimal fashion. In proposed system, due to the usage of WiFi router with the socket communication and DB-assisted Web server with proper interfaces, it allows to facilitate the management to keep monitoring and controling overall hydroponic nurturing environment. Since the proposed Web-based management system provides the superior reliability, the short nurturing period and the robustness to the pest by controlling LED emitting color rather than conventional system, so it can be applied and appropriate for in-house vegetable factory overcoming limitation of time and location.

• IE interfaces
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• v.13 no.3
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• pp.539-547
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• 2000

An architecture of a Web-based Decision Support system for mathematical analysis is presented. Front-end modules provide web-client GUI environment for mathematical analysis. The networking architecture is built upon client/server system by Java socket and accesses database by JDBC in WWW. Back-end modules provide decision supporting service and data management for mathematical programming analysis. In the back-end any analysis tools, such as mathematical optimizer, simulation package, or statistics package can be used. As an application example for this implementation, optimal facility replacement decision problem is selected. In the implementation the optimal facility replacement decision problem is formulated as a shortest path problem. It uses Oracle DB and CPLEX package as the mathematical optimizer. While ORAWeb is designed and implemented on the optimal facility replacement problem, it can easily be extended to any decision supporting problems that would require mathematical optimization process.

• Proceedings of the KIEE Conference
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• 2005.07d
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• pp.3072-3074
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• 2005

In this paper, web based monitoring systems are implemented for multi-axis force control systems of an intelligence robot. A web based monitoring system is implemented by porting Linux at embedded systems which include a Xscale processor. A device driver is developed to receive data from multi-axis force sensors in Linux operation systems. To control this device driver, a socket program for the Labview is also developed.

• Journal of Industrial Technology
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• v.26 no.A
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• pp.63-68
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• 2006

In this paper, remote monitoring system for wind turbine is developed. The developed system consists of data acquisition for wind sensor, and monitoring for site environment. In order to accomplish effective monitoring, the system uses Datasocket, SMB, FTP, Web Server, and G Web Server. Two computer system - one is data acquisition computer using Windows-XP and the other is monitoring computer using UNIX - constraint the distribute system with individual tasks. By using this system, one can perform various monitoring and control tasks in Wind-Turbine application, efficiently.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.39-40
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• 2017

본 논문에서는 서버의 비동기 입출력(이하 I/O) 모델을 통해 더 많은 접속과 성능을 위한 패턴과 클라이언트 브라우저의 HTML 템플렛팅과 반응성 UI들의 메모리 관리 패턴을 제안한다. 본 연구는 다이어트 현황을 기록하는 저널(Journal) 서비스를 제공하는 웹 어플리케이션이다. 노드.js (Node.js)의 소켓.io (Socket.io)를 통한 비동기 push 패턴을 사용한 효율적인 I/O 성능, html5의 로컬 저장소 (Local Storage), tcp/ip 헤더의 쿠키 (Cookie), 상태를 저장하는 웹 토큰 (Json Web Token)을 통한 무상태 서버 구조로 구성되어 있다. 이로 인하여 서버 확장성 및 동시 처리, 빠른 질의 성능, 기본 네트워크 패킷 보안을 구축한다. 과한 CPU 처리를 요하는 일 중 템플릿팅은 클라이언트 브라우저에게 분담하도록 하고 효율적인 DOM 접근과 메모리 관리를 위한 싱글턴 패턴을 적극 활용하여 빠르고 즉각적인 반응성을 가진 웹 어플리케이션을 운용한다.

• The Transactions of the Korea Information Processing Society
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• v.6 no.3
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• pp.654-663
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• 1999

In this paper, we develop a security system which enhances the security of information during transmission over the World Wide Web for solving problems related to outflow of the information on the internet. Our system provides safe security functions without modifying the existing Web server and browser by utilizing CGI, Plug-in, and Socket Spy techniques. Our system implements user access control and data encryption/decryption by using the hardware cryptographic token instead of using a software technique as in previous systems, and hence is a more robust security system.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.71-79
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• 2022

Currently, even if control and mock hacking are performed for the security of web servers, vulnerabilities continue to occur and be hacked. To solve this problem, we have developed a secure web server that can control all web communication using sockets between L4 and L5. And when giving HTTP responses, we proposed a method of combining files and headers in advance. As a result, both security and speed could be improved. Therefore, in this paper, we proposed the reason why vulnerabilities occur even if control and mock hacking occur, a solution to it, and a security web server development method that can maintain security up to DB.

• Journal of Advanced Navigation Technology
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• v.16 no.6
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• pp.968-974
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• 2012

After launched various smart devices such as smart phone and tablet PC, people who using smart devices are provided various services. Especially, contents sharing technology is utilized in any devices. But current contents sharing systems are made on various versions for various smart devices. These methods will be raising cost for development of application. Therefore it must using web technology for reducing cost. In this paper, we had analyzed performance of file transmission using web technology and compared with application based system.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.852-854
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• 2016

oneM2M 표준은 다양한 플랫폼을 지원하기 위해 다양한 통신 프로토콜과의 바인딩을 지원한다. 이 통신 프로토콜들은 HTTP, MQTT, COAP, WebSocket 등 경량화 혹은 단일 대상에 적합한 통신 프로토콜이며, 데이터 형식이 고정되어 있다. 본 논문에서는 자유로운 데이터 형식을 지원하며, 대규모/실시간 통신에 적합한 DDS를 oneM2M 표준에 따르는 OCEAN 플랫폼에 적용하는 방법을 제안한다.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.453-454
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• 2014

교육용 게임은 학습 흥미를 증진시킬 수 있는 중요한 도구 중 하나이다. 웹 기반의 정보화 기술의 발전에 따라 웹 기반의 학습 콘텐츠의 수요도 계속 증가하고 있다. 본 논문에서는 초등학교 저학년생을 대상으로 기초적인 사칙 연산 학습을 위한 게임 콘텐츠를 개발하였다. 특히, 웹 소켓 기술을 사용하여 개발된 본 게임은 다수의 사용자가 동시에 게임에 참여할 수 있으며, 각 사용자는 별도의 학습 프로그램 설치를 하지 않고도 웹에 연결된 환경이라면 브라우저를 통해 본 학습 게임에 접속하여 활용이 가능하다.