• Title/Summary/Keyword: Service-Oriented Systems

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A Study on Safety Oriented System Design of Highway Advisory Radio Service (안전지향형 노변방송서비스 체계에 관한 연구)

  • Chung, Sung-Hak
    • Journal of the Korean Society of Safety
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    • v.24 no.5
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    • pp.113-121
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    • 2009
  • The objective of this study is to develop highway advisory radio service for road safety oriented system design of the point by regional groups or geographical distributions. To develop these highway advisory radio service, traffic information provided service areas, responds for incident and accident, and road condition in service sections based on traffic information of highway advisory radio service. This study contributes to service of traffic information for safety driving, which is transport congestion areas and recognition of traffic congestion status in advanced traffic information service. As result of this study, systematic design of the advanced highway and traffic safety guides to management systems by highway advisory radio service.

Ultra Low Power Data Aggregation for Request Oriented Sensor Networks

  • Hwang, Kwang-Il;Jang, In
    • Journal of Information Processing Systems
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    • v.10 no.3
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    • pp.412-428
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    • 2014
  • Request oriented sensor networks have stricter requirements than conventional event-driven or periodic report models. Therefore, in this paper we propose a minimum energy data aggregation (MEDA), which meets the requirements for request oriented sensor networks by exploiting a low power real-time scheduler, on-demand time synchronization, variable response frame structure, and adaptive retransmission. In addition we introduce a test bed consisting of a number of MEDA prototypes, which support near real-time bidirectional sensor networks. The experimental results also demonstrate that the MEDA guarantees deterministic aggregation time, enables minimum energy operation, and provides a reliable data aggregation service.

Market Area of Distribution Center concerned with Customer Service (고객서비스를 고려한 물류센터의 시장영역)

  • 오광기;이상용
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.24 no.66
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    • pp.37-45
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    • 2001
  • Because the structure of the economy is being changed from product-oriented and company-centered economy to service-oriented and customer-centered economy, and the market competition is varying with the competition of non-price factors, the importance for customer service of logistics system is being increased. Thus, the level of customer service should be represented as an element of the logistics decision and the facility location decision. The level of customer service provided by logistics system has an effect on customers\` purchase decisions, hence on the market demand. That is, the market demand is elastic for customer service as it is influenced by product price. Considering the effect of customer service on demand, this study develops the market area which each facility will serve. That area is circular, and distance norm is considered Euclidean and Rectilinear (or Manhattan) distance norm. The market demand for product at a particular area is affected by the level of customer service that facility provides, and the relationship between the market demand and the level of customer service is represented with a mathematical function.

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Managing Complexity in Object-Oriented Analysis

  • Ine, So-Ran;Youn, Cheong;Misbah, Uddin Mirza;Lee, Kwon-Il;Cha, Seung-Hoon;Byoun, Bo-Gyun;Bae, Doo-Hwan
    • ETRI Journal
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    • v.20 no.2
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    • pp.192-213
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    • 1998
  • The current approaches in Object-Oriented Analysis have limitations on modeling complex real world systems because they require priori knowledge about objects and their interactions before applying them. This may be practical in small systems and systems with clear domain knowledge, but not in large real world systems with unclear domain knowledge. Our approach uses a stepwise refinement technique in a top-down manner to the Object-Oriented Analysis stage with the application of use cases. This approach is especially good for new areas where we do not know all the information in advance. We present the approach with an example of its application to the B-ISDN service modeling and distributed systems.

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Research for SOA (Service Oriented Architecture) implementation case study and its base technologies (서비스 지향 아키텍처의 기반 기술과 구축 사례에 대한 연구)

  • Jo, Jae-Hun;Lee, Sang-Wan
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2005.12a
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    • pp.455-462
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    • 2005
  • In order to succeed in today's changing business environment, the enterprise should adapt their process flexible. To increase their business process flexibility they need to establish and end-to-end integration internally as well as among partners. Now that SOA (Service Oriented Architecture) is accepted as an upcoming IT standard to support flexible business processes and integration. In this paper, SOA is introduced And the Web services and ESB (Enterprise Service Bus) are also introduced as a foundation technology to implement SOA-enabled solutions. The pilot project, which introduced in this paper, will be a good reference for future SOA study.

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A Comparison Analysis of Effects of System Factor on Satisfaction in Service Sectors (서비스 분야에서 시스템 요소가 만족도에 미치는 영향의 비교 분석)

  • Kim, Chong-Su
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.1
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    • pp.80-89
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    • 2011
  • In service science, it is critical to measure service satisfaction for innovating service processes, which is challenging for service sectors oriented to the usage of IT systems. For that purpose, in this study, a model based on the technology acceptance model and satisfaction measurement model is proposed. The model is empirically tested using data sets from a public service sector (G2B) and a private service sector (internet banking). The purpose of this study is to identify factors which affect the service satisfaction. The result shows that a public service sector is less sensitive to the IT systems on which its services are operated, and that the attitude factor strongly affects the service satisfaction in both sectors.

User's Satisfaction Analysis on the User-Oriented Public Transit Service in Busan (이용자 맞춤형 대중교통서비스의 이용자 만족도 분석 : 부산시 사례를 중심으로)

  • Park, Han-Young;Kim, Gyeong-Seok
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.11 no.1
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    • pp.28-41
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    • 2012
  • The User-Oriented Public Transit Service provide public transit service through media devices, such as mobile, BIT and In-vehicle display devices, which considered user's individual characteristics and specific preference anytime and anywhere. The objective of this study is to develop and improve the services in the three media devices. This study applied user-satisfaction analysis in evaluating the service in Busan, analyze factor affecting the level of service user's satisfaction, and draw remedies based on the analysis results. The user's satisfaction average values in each media are 3.29 mobile, 3.62 BIT, and 4.05 In-vehicle display devices. Overall satisfaction average value 3.54 on the service showed a positive reaction from the survey participants. The important factor affected on general satisfaction of the User-Oriented Public Transit Service is "In-vehicle display devices" scored .632 (standardized coefficient) by categorical regression analysis. But users prefer to further improve the service environment rather than to add service information because they are already contented with the information they are getting. Furthermore, this study suggested ways of improving the User-Oriented Public Transit Service based on the satisfaction analysis results from the user's perspective.

Improvement of Architecture and Building Process of Sensor Network for Sustainable u-City Service (지속가능한 u-City 서비스를 위한 센서망의 구조 및 구축 절차 개선)

  • Choi, Yeon-Suk;Park, Byoung-Tae
    • Journal of the Korea Safety Management & Science
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    • v.14 no.1
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    • pp.137-145
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    • 2012
  • In the previous study, the construction guide line of IT infra-structure for a u-City was introduced. However, it is only concentrated on the components and construction procedure for provider-oriented and technology-oriented sensor networks. In this paper the architecture and building process of demander-oriented sensor networks for sustainable u-City service are proposed. In the paper it is described (1) the enhancement methods of the procedure that can be flexibly constructed according to the scale of the project, (2) the methods that can improve the structure from the wireless sensor network such as RFID/USN to the hybrid sensor network, and (3) the consideration factors for providing the sustainable u-City service.

A Development Method of Web System Combining Service Oriented Architecture with Multi-Software Product Line (서비스지향 아키텍처와 멀티소프트웨어 프로덕트라인을 결합한 웹 시스템 개발 방법)

  • Jung, IlKwon
    • The Journal of Society for e-Business Studies
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    • v.24 no.3
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    • pp.53-71
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    • 2019
  • As software systems become more complex and larger, software systems require a way to reuse software components or modules to provide new functionality. This paper designed a development method of web system combining SOA(Service Oriented Architecture) with MPSL(Multi-Software Product Line). According to provides SOA and MPSL, this paper suggested to service providers and service users to provide and reuse variable services. From the viewpoint of service provider, the suggested method identifies and implements reusable variable services as features by syntax-based, functional-based, and behavior-based methods applying feature identification guidelines and manages them as reuse assets. From the user's point of view, it is possible to develop a web system by constructing a service by workflow model as a method of structure and reconfigure services. As a result of measuring the reuse of the web system constructed in this paper by the function point, the cost reduction effect was verified by applying it to the similar project with the increase of reuse.

Methods to Apply GoF Design Patterns in Service-Oriented Computing (서비스 지향 컴퓨팅을 위한 GoF 디자인 패턴 적용 기법)

  • Kim, Moon-Kwon;La, Hyun-Jung;Kim, Soo-Dong
    • The KIPS Transactions:PartD
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    • v.19D no.2
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    • pp.187-202
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    • 2012
  • As a representative reuse paradigm, the theme of service-oriented Paradigm (SOC) is largely centered on publishing and subscribing reusable services. Here, SOC is the term including service oriented architecture and cloud computing. Service providers can produce high profits with reusable services, and service consumers can develop their applications with less time and effort by reusing the services. Design Patterns (DP) is a set of reusable methods to resolve commonly occurring design problems and to provide design structures to deal with the problems by following open/close princples. However, since DPs are mainly proposed for building object-oriented systems and there are distinguishable differences between object-oriented paradigm and SOC, it is challenging to apply the DPs to SOC design problems. Hence, DPs need to be customized by considering the two aspects; for service providers to design services which are highly reusable and reflect their unique characteristics and for service consumers to develop their target applications by reusing and customizing services as soon as possible. Therefore, we propose a set of DPs that are customized to SOC. With the proposed DPs, we believe that service provider can effectively develop highly reusable services, and service consumers can efficiently adapt services for their applications.