• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.230-232
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• 2012

M2M 서비스는 센서 네트워크의 데이터 수집 및 제어를 넘어서는 새로운 타입의 서비스이다. M2M 서비스는 홈 네트워크 디바이스, 사용자의 스마트 디바이스, 개인 컴퓨터 등을 이용하여 스마트 환경의 감시, 관리, 그리고 제어 등을 제공하는 새로운 서비스 타입이다. 오늘날 M2M 서비스를 제공하기 위한 연구들이 진행되고 있는데, 이를 제공하기 위한 플랫폼 연구는 아직 많이 부족한 현실이다. 따라서 본 논문은 서비스 오버레이 네트워크를 이용하여 M2M 서비스를 제공하기 위한 플랫폼 구조를 제안한다. 또한 다양한 M2M 서비스들을 조합하여 새로운 서비스를 사용자에게 제공할 수 있는 서비스 컴포지션 방법 및 절차를 제안한다. 서비스 오버레이 네트워크 플랫폼을 이용한 M2M 서비스 플랫폼은 사용자에게 향상된 서비스 기능, 범용성, 호환성, 그리고 지능화 및 능동적 기능을 제공할 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.201-208
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• 2001

In the 21 st century, broadcasting, communication, and computer have been integrated due to the development of digital technology. Accordingly, to overcome the limit of respective communication media and to maintain them, their independent area shall not be classified. This study is to examine the future environment of digital TV broadcasting, to analyze customizing type service and interactive type TV technology, and to make asymmetric interactive digital TV publication broadcasting system, which is TV broadcasting in the next generation to treat visual image, sound, and various data all together by harmonizing broadcasting and communication like ISDB(Integrate Service Digital Broadcasting). In addition, to develop service on publication broadcasting with high quality, this study is tn propose to develop relative devices for TV/PC reception to realize a new communication type TV publication broadcasting, by analyzing technology for producing, sending, transmitting, receiving, and saving to apply to customizing type interactive system and by examining its application.

• Journal of the Korea Society for Simulation
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• v.14 no.2
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• pp.1-13
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• 2005

In distributed replicating server model, providing replicated services is able to improve the performance of providing a service and efficiency for several clients. And, the composition of the server selection algorithm is efficiently able to decrease the retrieval time for replicated data. In this paper, we define the system model that selects and connects the replicated server that provides optimal service using server-side downstream measurement and proposes an applicable algorithm.

• Proceedings of the Korea Society for Simulation Conference
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• 2005.11a
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• pp.39-44
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• 2005

최근 웹 서비스(Web Service)와 웹 프로세스(Web Process)는 이기종 시스템의 통합과 웹 애플리케이션 배포를 위한 대안으로 주목받고 있으며, 이에 따라 웹 서비스의 QoS(Quality of Services)의 중요성도 증가하고 있다. 본 논문에서는 웹 서비스의 QoS 분석 방법을 제안하고, QoS 중심의 웹 서비스 조합 도구인 SimQom4W (Simulation-based QoS-aware Composer for Web Services)를 소개한다. SimQom4W는 첫째, 웹 서비스와 웹 프로세스의 구성을 시각으로 기술하고, 둘째, 웹 프로세스에 대한 테스트 코드와 시뮬레이션 코드를 자동 생성하여 실행시킴으로써 QoS를 분석한다. 셋째, 다양한 QoS 요구사항을 만족하는 최적의 웹 프로세스를 선택할 수 있도록 하며, 넷째, 웹 서비스의 QoS 분석 및 평가 데이터의 보고서를 생성하여 제공한다.

• Proceedings of the Korea Society for Simulation Conference
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• 2005.05a
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• pp.134-138
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• 2005

기능적 제한이 있는 하나의 웹 서비스는 다른 기능의 여러 웹 서비스들과 다양한 형태로 조합되어 웹 프로세스(Web Process)를 만들게 된다. 이를 통해 개발에 소요되는 비용과 시간을 줄이고 사용자의 요구사항을 만족시키는 서비스의 유연한 조합이 가능하다. 웹 프로세스의 조합 및 통합 시에 중요한 것은 보다 효과적이고 높은 품질의 서비스를 제공할 수 있도록 하는 것이다. 웹 서비스의 조합과 QoS(Quality of Service) 평가 및 보장에 관한 기존 연구는 사용자가 자신의 QoS 요구사항을 만족하는 웹 서비스를 직접 찾아야 하고, 조합된 웹 프로세스가 원하는 QoS를 만족할 때까지 반복적인 수작업을 수행해야 하는 비효율적인 측면이 있었다. 본 논문에서는 사용자가 조합한 웹 프로세스의 QoS를 분석하고 사용자의 QoS 요구사항에 부합하는 웹 서비스를 지능적으로 찾아주는 QoS 기반 웹 서비스 조합 방법론 및 지원도구를 소개한다. 제안된 도구를 통해 Activity Diagram의 형태로 프로세스를 구성하고 구성된 프로세스의 QoS를 분석하여 QoS 요구사항을 만족하는 웹 프로세스를 효율적으로 구성할 수 있다.

• International Journal of Advanced Culture Technology
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• v.10 no.4
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• pp.561-568
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• 2022

This study investigated how pre-service English teachers perceive the effects of machine teaching on their English writing competence. 35 Korean students who are majoring in English education participated in this study. The participants used machine translators for one of the required courses related to English composition. A survey and focus group interview were conducted at the end of the course. They were asked to answer to what degree they perceive the effects of machine translators on their writing in terms of lexical, sentential, and discourse levels. Furthermore, their perspectives on the effects of machine translation on English teaching including limitations of machine translators, were interviewed in more detail. The results show that the participants perceive machine translators quite positively in terms of improving their writing competence, but they also point out some critical limitations of machine translators. These findings have some pedagogical implications for English writing course instructors, English teacher educators, and program developers.

• Journal of the Korean Institute of Rural Architecture
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• v.10 no.2
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• pp.71-78
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• 2008

It is true that the social welfare center influences on the community service. The recent change of social environment has influence on the configuration of space for the community social welfare center. The social welfare center fills the role of family welfare, domiciliary care, community welfare, education culture etc. Education culture magnified, and it is acting role as the community education culture center by various program including cultural desire according to the modern request to the whole local resident. In such sense, this study explore the conditions of spatial configuration for the education culture unit of social welfare center in small city. For this study, it was investigated the space role and service funtion, the service program, the usage characteristics, the service importance. In sum, the useful data were collected, analyzed, and colligated by case study. Case study and analysis contents about education culture unit of social welfare center present the basic design data for the space plan of suitable social welfare center in small city.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.6
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• pp.145-149
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• 2018

This paper introduces a method of sending and registering SMS using mobile LBS (Local Based Service) in social network service environment. This method acquires the location of the target person and object through the API and LBS, constructs the SMS based on the obtained information, and transmits and registers the SMS in the mobile environment. The composition of the SMS is the personal information of the object to be searched, the current position and the position of the object. Therefore, the user can quickly and accurately grasp the brief items and locations of objects to be searched through SMS. Also, Today we will improve the quality of life by providing upgraded service for shortening of appointment time and delivery.

• Journal of Mushroom
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• v.6 no.3_4
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• pp.131-137
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• 2008

These experiments were conducted to search for the optimum media size and composition for culture of Lentinula edodes (JNM3022). Considering the incubation period and the successful culturing rate, the optimum media size was length 25 $cm{\times}diameter$ 14 cm (weight 2.5 kg). The saturation moisture amount of Oak sawdust was 251 ml/100 g. It is a half of pine sawdust 495 ml/100 g. Considering the hypha growing speed and hypha density, the optimum media composition was Oak sawdust 80%+ wheat bran 20% and Oak sawdust 80%+ rice bran 20% In 10 treatments of media composition. The optimum moisture amount of media for growing Lentinula edodes (JNM3022) was 55%. Injection pipe with 20 holes in media was reduced the incubation periods to 11 days when 20cm length media and 32 days when 30cm length media compare to control. The best method for browning media surface was change temperature condition above $10^{\circ}C$ and punching the vinyl bag. This treat could shortened the browning periods to 54 days.

• Journal of Internet Computing and Services
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• v.15 no.1
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• pp.45-53
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• 2014

UI-Mashup is widely used as a service method to add value, which is composed of distributed various contents on the internet and has turned out to be one of the latest trends in web application program development. Previous UI-Mashup-related studies have focused primarily on the dynamic service composition and have not been able to adapt to a rapidly changing Web Standard, thusthe end users conclude that UI-Mashups are slow, incompatible and poor security services. In this study, We propose an architecture for the performance improvements of UI-Mashup.In order to provide fast services and security enhancements, the proposed architecture collects UI fragments on the server in parallel, and sends layouts and contents of Mashups UI to the client through a special delivery channel supporting fast reaction and response time. In this study, the implementation and performance tests were proceeded to verify the proposed architecture experimentally. As a result of the performance testing, the proposed architecture has two to three times faster response time and more than four times throughput compared to the previous UI-Mashup technology.