Earticle

This study proposes a collaboration system framework on the web service in a supply chain to implement an efficient virtual supply chain and improve an ability to fulfill received orders over a supply chain. The system based on the framework proposed in this paper plays an important role for automatic order negotiation and placing/receiving an order noticed in web service by the main system. Furthermore, it can evaluate the fulfillment of received orders over a supply chain by using the transaction results from hierarchically related vendors and establish efficient manufacturing plans. In a word, this system is the automated system for creating manufacturing plans, placing and receiving orders. A little more important main function of this system is that it has a dynamic evaluation capability about fulfillment with received orders over a supply chain, and improves the evaluation method of fulfillment ability with received orders with related to direct dealing vendors, which is a main problem in existing system. As a result, this system is able to reduce the work load of the sales and purchasing materials, production control division, to manage accurate inventory promptly, to maintain the optimal inventory level by analyzing the information of fulfillment ability with received orders, and to enhance the level of service for customers.

Web Services offer many benefits over other types of middleware in distributed computing. However, usage of Web Services results in large network bandwidth since Web Services use XML-based protocol which is heavier than binary protocols. Even though there have been many researches to minimize the network traffic and bandwidth usages of Web Services messages, none of them are solving the problem clearly yet. In this paper, we propose a transparent proxy with cache to avoid transfer of repeated SOAP data, sent by Web Service to an application. To maintain the cache consistency, we introduce publish/subscribe paradigm using WS-Eventing between the proxy and Web Service. The implemented system based on our proposed architecture will not compromise the standards of Web Service. The evaluation of our system shows that caching SOAP messages not only reduces the network traffic but also decreases the request delays.

본 논문에서는 모바일 웹서비스 구현 환경을 최소화하면서 서비스 성능을 향상시키는 개선된 처리기를 설계 제안하였다. 웹 서비스를 구현하기 위해서는 표준에 규정된 WSDL코드를 가지고 SOAP 통신을 해야 한다. 그러므로 WSDL 및 SOAP를 구현하면 기본적인 웹 서비스가 가능하다. 또한 웹 통신을 위해 Tomcat과 AXIS 라이브러리를 사용해야한다. 그러나 Tomcat의 사용은 추가적인 네트워크 사용과 시스템에 프로세스로 상주하여 시스템 자원을 사용하는 문제가 있기 때문에 구현시 오버헤드를 발생시킬 수 있다. 본 논문은 오버헤드의 원인인 Tomcat을 사용하지 않고 모바일 웹 서비스를 구현함으로써 네트워크 자원과 시스템 자원을 절약할 수 있으면서 성능을 향상시키는 효율적 처리기를 설계 구현하였다.

In this paper, we suggest performance enhanced Mobile Web service architecture. Mobile Web Services are new technology that integrates different applications to provide interoperability. SOAP is a lightweight message exchanging protocol and is a principal factor that decides the Web Services performance. When a mobile Web Service is implemented with the Java technology, it should be implemented with both a SOAP message processor like AXIS, and Java Servlet container (e.g. Tomcat). This typical implementation is not efficient because it requires an additional communication port and process. In this paper, we suggest a new method that replaces this typical approach to enhance Web Service performance.

The purpose of this study is to compare the characteristics of Web 2.0 service adoption among the countries with different cultural backgrounds by collecting data from Korea, US, and Spain. We conducted MANCOVA analysis by using county as an independent variable representing unique cultural background, information technology capability (ITC) as covariate, and two dependent variables for Web 2.0 services including Social Networking Tool (SNT) and Task Support Tool (TST). The results of this study show that culture and ITC strongly influences the adoption of Web 2.0 services. Korean group is using Web 2.0 services mainly for social networking whereas US group is using them more for conducting their individual task. On the other hand, Spain group is using Web 2.0 Service for both purposes.

기존의 인터넷 GIS 개발방식은 프로젝트간의 공유와 재사용이 어려워 추가적인 서버, 데이터베이스, 소프트웨어 요구 등으로 많은 시간과 비용을 소요하여 효율성 저하의 문제가 있어왔다. 이와 같은 문제점을 해결하기 위한 방안으로 본 연구에서는 XML 웹서비스 최신 기술을 이용한 컴포넌트 기반의 개발모델을 설계, 제안하였다. XML 웹서비스 표준에 따름으로써 하드웨어와 소프트웨어의 제약이 없으며, GIS 기능들을 인터넷 상에 컴포넌트 형태로 개발, 공유, 통합함으로써 다양한 프로젝트에 신속하고 능동적으로 대처할 수 있도록 하였다. 이를 통해 또한 장기적으로 기존의 방식에 비해 인터넷 GIS 애플리케이션 개발에 소요되는 시간과 비용을 크게 줄여줄 것으로 기대된다. 개발모델과 함께 구체적인 GIS 컴포넌트들을 설계하였으며, 또한 모델의 검증과 향후 활용 및 개선을 위해 실질적인 애플리케이션 형태의 제안과 함께 일부 구현시험을 수행하였다.

A model has been suggested for dynamic development of interoperable Internet GIS applications. Suggested model is mainly based on the integration of various GIS components by applying Web Service technology. During designing the model, several examples of GIS Web Service components were suggested and possible applications using these components were also designed. Practical implementation has been carried out to verify and to improve the model. There are some examples based on the suggested model.

본 연구에서는 SOA와 웹서비스의 개념을 살펴보았고, SOA를 구현하는 웹서비스의 주요 프로토콜인 SOAP, REST, SRW/U, OAI-PMH에 대한 기술을 분석하였으며, 국내외 도서관에서 SOAP과 REST 기반 웹서비스 구축사례를 각각 제시하였다. 또한 국내외 도서관에서 Web 2.0 기술을 활용한 Library 2.0 적용사례와 SOA 기반 웹서비스 프로토콜의 Library 2.0 적용방법을 제시하였다. 마지막으로 REST 기반 Open API를 이용하여 도서관 OPAC, 온라인서점, 웹 포털, 종합목록 등을 결합한 메타검색 시스템의 구축과 활용을 통한 Library 2.0 적용방안을 제안하였다.

This study examined the main concepts of SOA and Web Services, and conducted technical analysis of major Web Services protocols such as SOAP, REST, SRW/U, and OAI-PMH that realize SOA, and suggested examples of SOAP and REST based Web Services establishments in foreign and domestic libraries respectively. In addition, it introduced application examples of Library 2.0 using Web 2.0 technology in foreign and domestic libraries and suggested how to apply SOA based Web Services protocol in Library 2.0. Finally, it proposed how to put Library 2.0 into practice applying meta-searching system integrating library OPAC, online bookstores, web portal sites and library union catalogs using REST based Open API.

Purpose: The purpose of this study was to analyze the effects of a quit smoking program using the Web and short message service on exhaled carbon monoxide, self-efficacy, and depression according to nicotine dependency level in undergraduate students. Methods: In this study a non-equivalent control group pretest-posttest design was applied. The participants included 90 students (52 in the low nicotine dependency group and 38 in the high nicotine dependency group) who succeeded in quitting smoking. Data were collected on 3 occasions, that is, before the program, immediately after the program, and 3 weeks after the program. Collected data were analyzed using independent t-test, repeated measure ANOVA, and paired t-test with SPSS 20.0. Results: Exhaled carbon monoxide was higher in the high nicotine dependency group than in the low nicotine dependency group. Self-efficacy significantly increased 3 weeks after the program in the low nicotine dependency group and significantly increased immediately after the program in the high nicotine dependency group. Depression significantly decreased 3 weeks after the program in the low nicotine dependency group. Conclusion: Self-efficacy may be enhanced when it is dealt with during an early phase of the quit smoking program for the high nicotine dependency group. Long-term intervention and persistent intervention are needed with regard to depression during a quit smoking program.