• 한국지리정보학회지
• /
• 제22권2호
• /
• pp.121-132
• /
• 2019

최근 우리나라는 IT를 포함한 다양한 분야에서는 웹 서비스에 대한 기술의 발전과 함께 사용자 수도 증가함으로써 웹 서비스 적합성 여부의 중요성이 강조되고 있다. 하천공간정보를 포함한 공간정보 분야는 IT를 중심으로 웹 서비스에 관하여 많은 연구가 진행되고 있으나 웹 서비스의 테스트에 대한 연구가 미흡한 실정이다. 이에 하천공간정보 웹서비스 구현과 함께 웹서비스의 성능을 파악하기 위한 검증이 필요하다. 하천공간정보에 대한 웹 서비스(HydroG-OneFlow)를 대상으로 Open Source인 Apache Jmeter를 이용하여 성능 및 안정성 테스트를 수행하고, StyleCop을 이용하여 표준 준수성 및 상호운용성 테스트를 수행하여 웹 서비스에 대한 적합성을 테스트하였다. 성능은 유저 수가 500명씩 증가할 경우 평균 응답시간이 약 2초씩 증가하였고, 신뢰성은 유저 수가 500명씩 증가할 경우 약 0.2%씩 감소하는 것으로 나타났다. 또한 표준 준수성 및 상호운용성을 수행함으로써 웹서비스의 신뢰도를 높였다. 이를 통해 하천공간정보에 대한 웹 서비스 구현 및 취약점을 보완할 수 있는 기반이 될 것으로 판단된다.

• Spatial Information Research
• /
• 제20권2호
• /
• pp.35-44
• /
• 2012

최근 국내외에서는 민간기업 뿐만 아니라 관공서에서도 웹 지도 서비스가 활발하게 이루어지고 있는 상황이다. 플랫폼으로써 데스크 탑에서부터 스마트 폰까지 다양하며, 이에 사용되는 기술도 계속 발전하고 있는 추세이다. 또한 사용자들에게 현재 서비스 중인 공간정보를 사용하여서 매쉬업 할 수 있도록 다양한 API를 제공하고 있다. 본 논문에서는 웹 지도 서비스에서 최근 유행하고 있는 RIA기술을 적용하여 각 언어별로 지도 서비스에서 가장 많이 사용하는 기능을 구현하였다. 각 웹 브라우저별로 사용자가 느끼는 속도에 대해서 실험 및 분석을 실시하였으며, 분석결과 JavaScript, Silverlight, Flex로 구현된 기능마다의 특징이 발견되었다. 실제 지도 서비스중인 서울시GIS포털시스템의 생활지도에서 직접 테스트하였다. 종합적인 결과 본 연구의 환경에서는 Silverlight의 성능이 다소 우수한 것으로 나왔다.

• 복식
• /
• 제51권6호
• /
• pp.117-128
• /
• 2001

The purposes of this study was to investigate discriminative factors of clothing buying intention on Internet shopping mall. The sample included 435 male(44.8%) and female(55.2% ) adults, and an instrument was developed based on previous studies. The statistical analysis used for this study were factor analysis, 1-test, and LISREL. The results of factor analysis showed that consumers evaluated apparel internet shopping attributes based on perceptional dimensions of internet shopping consisted of clothing quality and value. web service quality and value, and adoption of internet shopping. Each dimension has sub-factors as follows: (1) clothing quality was perceived as 'artistry' 'sociality' and 'practicality'. (2) web interface service quality was perceived as 'visuality', 'advantage', 'response', 'dependability' and 'buying-confidence'. (3) internet shopping adoption was perceived as 'usefulness' and 'convenience'. T-test revealed that consumer's buying intention, re-entry intention, and store attitude were differed concerning all sub-factors including 'usefulness' and 'convenience' in adoption of Internet shopping dimension. As a result of LISREL, clothing buying intention path model was set up as following path. (1) 'artistry', 'sociality' and 'practicality' of clothing quality affected clothing value perception positively. (2) 'visuality', 'advantage', 'response' and 'buying-confidence' of web service quality affected web service value perception positively. (3) clothing and web service value perception affected store attitude positively. (4) store attitude affected clothing buying intention positively. However, Adoption of Internet shopping dimension that was perceived as usefulness and convenience did not affect clothing buying intention path model. Therefore, consumers buying, intention model in internet circumstance could be used nearly the same as real market circumstance.

• 한국전자거래학회지
• /
• 제8권4호
• /
• pp.113-128
• /
• 2003

시맨틱 웹 기반의 서비스의 기술(혹은 명세 )은 지능적 서비스 중개 (matchmaking)가 가능할 수 있도록 언어적 표현의 유연성 (flexibility)과 표현력 (expressiveness)을 높일 수 있는 방향으로 진행된다. 유연성은 서비스 기술의 상세한 정도와 표현의 구조적 차이를 컴퓨터가 처리하는 방식과 관련이 있고, 표현력은 서비스를 의미적 차원으로(혹은 온톨로지에서 표현하는 개념의 수준으로) 보다 풍부하게 표현하는 것을 의미한다. 최근 전자상거래의 표준으로 자리잡고 있는 UDDI와 ebXML의 단점은 서비스 명세에 있어서 유연성과 표현력이 떨어진다는 점이다. 본 연구에서는 DAML-S를 중심으로 시맨틱 웹 기반의 서비스 명세의 확장에 필요한 언어적 구성 요소들을 분석한다. 그리고 이를 지능형 웹 서비스 구현에 적용시키기 위한 방법을 가상적 경매 사이트인 테스트옥션 닷컴 (testAuction.com)을 구현한다. 마지막으로 현재 온톨로지를 이용한 서비스 기술 프레임웍에 대한 이론적 고려사항들에 대하여도 살펴본다.

• 한국시뮬레이션학회논문지
• /
• 제14권3호
• /
• pp.119-127
• /
• 2005

Web services and their composition (web processes) are promising technologies to efficiently integrate disparate software components over various types of systems. As many web services are nowadays available on Internet, quality of services (QoS) and performance/cost become increasingly important to differentiating between similar service providers. In this work, we introduce sPAC (Web Services Performance Analysis Centre) and show how customers can benefit from sPAC to consider performance in composing and commercializing web services. sPAC 1) helps users to graphically describe the workflow of web services, 2) invokes web services to test out performance for light load conditions, 3) automatically converts the web services and the flow between them into a simulation model, 4) conducts extensive simulations for heavy load conditions and various usage patterns, and 5) reports analysis results and estimation data for the web services.

• 디지털융복합연구
• /
• 제5권1호
• /
• pp.141-157
• /
• 2007

Due to the development of Internet and networking technologies, it is much more easier to get in touch with public service through the web services such as tax, travel information, getting a job, etc. In order to measure the quality of official government web sites, we are to test the difference between the web quality of the government sites and the offline feature of the same official service by means of customer perspectives. The resulting of this study show that the quality of official web site has been improved so far though such areas as privacy, security needed to be updated. Especially the web interface or contact point of the digital media should be reflected customer's need so that the online materials may be quickly updated according to the request of client's.

• 산업경영시스템학회지
• /
• 제27권1호
• /
• pp.57-63
• /
• 2004

Evaluating a project is one of the key activities in managing projects, and thus it should be implemented as a part of the entire project management system. However, currently deployed systems suffer from deficiencies such as the lack of supporting distributed environment and integrity problems. Web service technology, which enables applications to work inter-operatively under a distributed computing environment, is said to solve such problems. In this paper, the web service technology is applied to evaluation management systems. The process of evaluation is designed based on the web service, data is modeled and a pilot system is implemented to test the feasibility of the technology to the domain of project evaluation.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제5권10호
• /
• pp.1841-1861
• /
• 2011

The advance in Service-Oriented Architecture (SOA) and web services has led to the development of new types of a system in which heterogeneous service components can connect and compose to solve a complex business problem. In the SOA, even though these service components are valid in their functionality, there is a need to test their behaviors when those services are composited. In recent years, WS-BPEL has received a wide acceptance as a means of integrating distributed service components. To test the composite service, the existing testing techniques have been focused on the functional features based on the WS-BPEL process. However as SOA approach is applying to real-time software development, the performance of composite service becomes one of important issues. This paper proposes a technique to the performance testing of a composite service with WS-BPEL extension which combined with the concept of aspect. Our WS-BPEL extension has been made towards annotating aspect component which is measuring the response time of the composite service. This paper also explains the procedure of performance testing with on-line transaction system. Our technique can apply to choose an adequate component in service composition with considering the performance among several candidate web service components.

• 한국통신학회논문지
• /
• 제37B권9호
• /
• pp.822-830
• /
• 2012

한국을 대표하는 연구망인 KREONET은 OGF에서 제안한 NSI (Network Service Interface) 기반의 네트워크 자원서비스에이전트 (NSA) 기술을 개발하였다. 개발된 NSA은 웹 서비스를 지원하며 MPLS 제어평면 기술을 이용하여 사용자가 원하는 시간 때에 네트워크 자원 (대역폭, 경로)을 예약, 구성, 해제, 종결 해 줄 수 있다. 본 논문에서는 개발되어진 NSA의 시스템 블록 및 NSI 인터페이스 메시지 흐름에 대하여 알아본다. 또한 NSI 요청 메시지를 위한 클라이언트, 확인 메시지를 위한 서버로 동작하는 Reguester NSA를 웹포털시스템으로 구현하여 개발된 NSA과의 통신을 통해 NSI 연결 예약 서비스를 시험하였다. 사용자로부터 제공 되어진 예약정보를 받아 웹 포털 시스템과 NSA과의 NSI 인터페이스 메시지를 통해 네트워크 자원을 예약, 구성, 해제, 종결 할 수 있었다.

• 대한원격탐사학회지
• /
• 제33권4호
• /
• pp.391-400
• /
• 2017

Geo-based application services linked with the Open Geospatial Consortium (OGC) Web Processing Service (WPS) protocol have been regarded as an important standardized framework for of digital earth building in the web environments. The WPS protocol provides interface standards for analysis functionalities within geo-spatial processing in web-based service systems. Despite its significance, there is few performance tests of WPS applications. The main motivation in this study is to perform the comparative performance test on WPS standards. Test system, which was composed of WPS servers, WPS framework, data management module, geo-based data processing module and client-sided system, was implemented by fully open source stack. In this system, two kinds of geo-based image processing functions such as cloud detection and gradient magnitude computation were applied. The performance test of different server environments of non-WPS, synchronous WPS 1.0 and asynchronous WPS 2.0 was carried out using 100 threads and 400 threads corresponds client users on a web-based application service. As the result, at 100 threads, performance of three environments was within an adjacent range in the average response time to complete the processing of each thread. At 400 threads, the application case of WPS 2.0 showed the distinguished characteristics for higher performance in the response time than the small threads cases. It is thought that WPS 2.0 contributes to settlement of without performance problems such as time delay or thread accumulation.