• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2004년도 가을 학술발표논문집 Vol.31 No.2 (2)
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• pp.406-408
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• 2004

To develop enterprise architecture based distributed application needs consideration of various factors such as division of role between web-designer and software developer, defining entity and its usage, database connection and transaction processing. This paper presents DONSL(Data Server of Non SQL-Query) architecture that provides solution to above aspects through web-tier object modeling guaranteeing efficient transaction processing and performance between web-tier and 08MS through simplified usage of query logic property.

• 한국산학기술학회논문지
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• 제15권12호
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• pp.7424-7429
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• 2014

현재 GPS는 측량 및 지도제작, 측지, 지구물리와 같은 지상부문, 항공기 항법, 항공사진 촬영과 같은 공중부문, 선박의 항법, 수심측량과 같은 해상부문, 위성 궤도, 지구궤도와 같은 우주부문 등 다양한 분야에서 폭넓게 활용되고 있다. 그러나 넓은 활용분야에 비해 정밀 해석의 자료처리를 위해서는 전문지식뿐만 아니라 비용적인 문제로 인해 활용에 제약이 있다. 이에 본 연구에서는 전문지식이 없는 사용자도 GPS 데이터를 이용하여 손쉽게 정밀절대측위 성과를 얻을 수 있도록 C#을 이용하여 웹기반의 GPS 자료처리 솔루션을 개발하였다. 또한, 개발된 솔루션을 이용하여 우리나라가 일본 지진 이후 상시관측소 별로 평균 30mm/year의 지각변동이 나타남을 산출하고, 기존 지각변동 속도와 비교함으로써 지각변위속도 모니터링의 활용가능성을 제시하였다.

• International Journal of Internet, Broadcasting and Communication
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• 제12권4호
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• pp.109-121
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• 2020

As a decrease in labor became a serious issue in the manufacturing industry, smart factory technology, which combines IT and the manufacturing business, began to attract attention as a solution. In this study, we have designed and implemented a real-time remote management system for smart factories, which is connected to an IoT sensor and gateway, for plastic manufacturing plants. By implementing the REST API in which an IoT sensor and smart gateway can communicate, the system enabled the data measured from the IoT sensor and equipment status data to the real-time monitoring system through the gateway. Also, a web-based management dashboard enabled remote monitoring and control of the equipment and raw material processing status. A comparative analysis experiment was conducted on the suggested system for the difference in processing speed based on equipment and measurement data number change. The experiment confirmed that saving equipment measurement data using cache mechanisim offered faster processing speed. Through the result our works can provide the basic framework to factory which need implement remote management system.

• 정보처리학회논문지D
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• 제11D권5호
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• pp.1143-1148
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• 2004

분산 애플리케이션을 위한 다계층 모델 또는 분산 아키텍처를 개발하기 위해서는 웹디자이너와 페이지 작성가의 역할 분리, 엔터티 정의와 사용에 대한 고려, 데이터베이스 연결 및 관리, 트랜잭션 처리 둥 여러 가지 사항을 고려하여야 한다. 본 논문에서는 분산 애플리케이션 개발시 여러 고려사항에 대한 해결책으로 웹 계층 오브젝트 모델링 방법을 사용하는 DONSL(Data Server of Non SQL-Query) 아키텍처를 제안한다. 이 아키텍처는 트랜잭션 처리를 지원하고 웹 계층과 DBMS 사이에는 질의 로직을 단순화하는 방법을 통해 성능을 보장하는 구조이다. 제안한 개념적인 프레임웍은 각 계층(tier)의 작업을 단순화시키고 엔터티와 DAO(Data Access Object)를 제거시킴으로서 중대규모 사이트 구현을 용이하게 하는 방법을 제공한다.

• 한국IT서비스학회지
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• 제13권2호
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• pp.133-149
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• 2014

It is unavoidable to provide products that meet customers' needs and wants so that firms may survive under the competition in this globalized market. This paper focuses on how to provide levels for attributes that compse product so that firms may give the best products to customers. In particular, its main issue is how to determine common attributes and the others with their appropriate levels to maximize firms' profits, and how to construct a decision support system to ease decision makers' decisons about optimal common attribute selection using the Semantic Web and SWCL technologies. Parameter data in problems and the relationships in the data are expressed in an ontology data model and a set of constraints by using the Semantic Web and SWCL technologies. They generate a quantitative decision making model through the automatic process in the proposed system, which is fed into the solver using the Logic-based Benders Decomposition method to obtain an optimal solution. The system finally provides the generated solution to the decision makers. This presentation suggests the opportunity of the integration of the proposed system with the broader structured data network and other decision making tools because of the easy data shareness, the standardized data structure and the ease of machine processing in the Semantic Web technology.

• 대한원격탐사학회지
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• 제31권1호
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• pp.1-9
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• 2015

Mobility and cloud platform have become the dominant paradigm to develop web services dealing with huge and diverse digital contents for scientific solution or engineering application. These two trends are technically combined into mobile cloud computing environment taking beneficial points from each. The intention of this study is to design and implement a mobile cloud application for remotely sensed image fusion for the further practical geo-based mobile services. In this implementation, the system architecture consists of two parts: mobile web client and cloud application server. Mobile web client is for user interface regarding image fusion application processing and image visualization and for mobile web service of data listing and browsing. Cloud application server works on OpenStack, open source cloud platform. In this part, three server instances are generated as web server instance, tiling server instance, and fusion server instance. With metadata browsing of the processing data, image fusion by Bayesian approach is performed using functions within Orfeo Toolbox (OTB), open source remote sensing library. In addition, similarity of fused images with respect to input image set is estimated by histogram distance metrics. This result can be used as the reference criterion for user parameter choice on Bayesian image fusion. It is thought that the implementation strategy for mobile cloud application based on full open sources provides good points for a mobile service supporting specific remote sensing functions, besides image fusion schemes, by user demands to expand remote sensing application fields.

• 한국멀티미디어학회논문지
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• 제10권12호
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• pp.1752-1761
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• 2007

Location-based services are a recent concept that integrates a mobile device's location with other information in order to provide added value to a user. Although Location-based Services provide users with comfortable information, it is a complex task to manage and share heterogeneous and numerous data in decentralized environments. In this paper, we propose the Semantic LBS Model as one of the solution to resolve the problem. The Semantic LBS Model is a LBS middleware model that includes an ontology-based data model for LBS POI information and its processing mechanism based on Semantic Web technologies. Our model enables POI information to be described and retrieved over various domain-specific ontologies based on our proposed POIDL ontology. This mechanism provide rich expressiveness, interoperability, flexibility in describing and using information about POls, and it can enhance POI retrieval services.

• Journal of Information Processing Systems
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• 제17권1호
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• pp.37-50
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• 2021

Query applications based on nested data, the most commonly used form of data representation on the web, especially precise query, is becoming more extensively used. MapReduce, a distributed architecture with parallel computing power, provides a good solution for big data processing. However, in practical application, query requests are usually concurrent, which causes bottlenecks in server processing. To solve this problem, this paper first combines a column storage structure and an inverted index to build index for nested data on MapReduce. On this basis, this paper puts forward an optimization strategy which combines query execution service tree and frequent sub-query trajectory to reduce the response time of frequent queries and further improve the efficiency of multi-user concurrent queries on large scale nested data. Experiments show that this method greatly improves the efficiency of nested data query.

• 정보처리학회논문지B
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• 제11B권4호
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• pp.465-470
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• 2004

기존의 웹 정보 예측 시스템은 예측에 필요한 정보를 얻기 위하여 사용자 프로파일과 사용자로부터의 명시적 피드백 정보를 필요로 하는 단점이 존재한다. 본 논문에서는 이러한 단점을 극복하고자 웹 사이트에 접속한 고객의 행동을 나타내는 클릭 스트림 데이터와 이를 기반으로 한 사용자의 암시적 피드백 정보를 이용하여 각 사용자가 가장 필요로 하는 웹 정보를 예측한다. 이를 이용하여 관련 정보를 제공할 수 있는 앙상블 SVM을 이용한 동적 웹 정보 예측 시스템을 설계하고 구현하며, 기존의 웹 정보 예측 시스템과 성능 비교를 수행한 결과, 제안된 방법의 우수함이 입증되었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2678-2680
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• 2001

We develop a total solution system for applications, which is called a data processing module system(DPMS), based on ASP, PDF, JAVA, and MSSQL. The DPMS system provides a realtime telematic guidance in the fields of application, recruiting, and management. The user documents the PDF file on the Web browser and store the file in DB for correction. The DPMS discovered the difficulties in data input due to 2 byte problem of Korean language. This result leads to the usage of Korean language as well as others. Test results through free-charge access confirm that the DPMS outperforms the conventional systems based on ASP with HTML in view of simplicity and confidentiality.