• Journal of Information Processing Systems
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• 제13권1호
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• pp.26-39
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• 2017

The need for embedded devices to be able to exchange information with each other and with data centers is essential for the advent of the Internet of Things (IoT). Several existing communication protocols are designed for small devices including the message-queue telemetry transport (MQTT) protocol or the constrained application protocol (CoAP). However, most of the existing implementations are convenient for computers or smart phones but do not consider the strict constraints and limitations with regard resource usage, portability and configuration. In this paper, we report on an industrial research and development project which focuses on the design, implementation, testing and deployment of a MQTT module. The goal of this project is to develop this module for platforms having minimal RAM, flash code memory and processing power. This software module should be fully compliant with the MQTT protocol specification, portable, and inter-operable with other software stacks. In this paper, we present our approach based on abstraction layers to the design of the MQTT module and we discuss the compliance of the implementation with the requirements set including the MISRA static analysis requirements.

• 경영정보학연구
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• 제2권2호
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• pp.255-281
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• 2000

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.1796-1800
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• 1991

Picture Archiving and Communication Systems(PACS) provide an integration of digital imaging information in a hospital, which encompasses various imaging equipment, viewing workstations, database archive systems, and a high speed fiber optic network. One of the most important requirements for integration is the standardization of communication protocols to connect devices from different vendors. Since 1985, the ACR-NEMA standard provides a hardware interface, a set of software commands, and a consistent set of data formats for point-to-point interconnection of medical equipment. However, it has been shown to be inadequate for PACS networking environments, because of its point-to-point nature and its inflexibility to allow other services and protocols in the future. Based on previous experience of PACS developments in The University of Arizona, a new communication protocol for PACS networks has been suggested to the ACR-NEMA Working Group VI. The defined PACS protocol is intended to facilitate the development of PACS's capable of interfacing with other hospital information systems. Also, it is intended to allow the creation of diagnostic information data bases which can be interrogated by a variety of distributed devices. A particularly important goal is to support communications in a multivendor environment. The new protocol specifications are defined primarily as a combination of the International Organization for Standardization / Open Systems Interconnection (ISO/OSI) protocols and the data format portion of ACR-NEMA standard. This paper addresses the specification and implementation of the proposed PACS protocol into network node. The protocol specification, which covers Presentation, Session, Transport, and Network layers, is summarized briefly. The implementation has natural extentions to Global PACS environments. The protocol implementation is discussed based on our implementation efforts in the UNIX Operating System Environment. At the same time, results of performance evaluation are presented to demonstrate the implementation of defined protocol. The testing of performance analysis is performed on the PACS prototype node.

• 한국전자거래학회지
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• 제8권4호
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• pp.17-32
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• 2003

기업의 기술수용 및 구현과정은 기술 그 자체가 업무성과를 증대시킬 것이라는 가정 하에 기술구현과 정을 설명한 기존연구와는 달리 본 연구는 신뢰와 지배력이 기업간 전자거래시스템 구현 성공에 미치는 영향을 파악하기 위해 56개의 기업간 전자거래시스템 활용기업을 대상으로 하여 기업간 신뢰와 지배력을 감성적 신뢰, 시스템적 신뢰, 정보기술 지배력, 가치사슬 지배력으로 구분하여 조사하였다. 연구결과 기업간 전자거래시스템이 해당 산업 안에서 성공적으로 구현되기 위해서는 해당 산업영역에 대한 정보기술과 가치사슬 지배력 향상에 노력해야 함을 밝혔다.

• 경영정보학연구
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• 제9권1호
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• pp.215-231
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• 2007

최근 중앙부처 및 지방자치단체 등 공공부문에서 성과관리의 중요성이 강조되면서 BSC 등의 성과관리 시스템 구축이 활발히 진행되고 있다. 그러나 민간부문과 달리 공공부문은 비영리 조직이라는 특성상, 그리고 다양한 이해관계자들이 존재하기 때문에 성과관리 시스템 구축 시 많은 어려움이 있다. 본 연구의 목적은 정보통신부의 전략적 성과관리 시스템에 대한 연구를 통해, 업무특성에 맞는 성과관리 시스템 구축에 대한 선진사례를 도출하여, 공공부문에서 BSC 등의 성과관리 시스템을 구축 시 발생하는 문제점들에 대해 효과적으로 대처하고 벤치마킹 할 수 있는 방안을 제공하는데 있다. 사례대상 공공기관(정보통신부)의 성과관리 연구는 국내 공공부서에 적합한 성과관리 방법론 도입과 시스템 구축에 효과적인 지침서가 될 수 있을 것이며, 현재 공공부문에서 BSC를 구축 할 때 발생하는 여러 문제들에 대하여 효과적인 방안을 제시할 수 있다는 데에 연구의 의의를 둘 수 있다.

• 한국정보시스템학회지:정보시스템연구
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• 제13권1호
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• pp.77-95
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• 2004

According to the increase of organizational complexity and the change of rapid information technology environment, many firms have shifted their information technology(IT) strategy from developing information systems in-house to purchasing application software such as Enterprise Resource Planning(ERP) Systems. Marketing and Sales functions within a Korean automotive part company include developing new assembly products, determining pricing, taking customer's orders, and shipping assembly products to customers. Marketing and Sales Information System(MSIS) in ERP system plays an important role in next Production Planning process. MSIS also makes management reporting and decision making faster and more uniform throughout an organization. MSIS promotes thinking about corporate goals, as opposed to thinking only about the goals of a single department or functional area. This paper intends to design and implement a MSIS in ERP systems for Korean automotive part company using object-oriented methodology In order to accomplish the implementation of MSIS in ERP system, we employed UML as its standard modeling language. In this study, four diagramming techniques such as use case diagram, sequence diagram, class diagram, component diagram among eight modeling techniques are used for analyzing hierarchical business process. In traditional marketing and sales function, a company with an unintegrated information system can have marketing and sales data that is data redundant or inaccurate. MSIS integrated in ERP system can solve the sales forecast problem, which minimizes the total costs of production, inventory, and transportation under constraints of production capacity. Also, the use of UML methodology makes S/W programmers shorten the phase of analysis and design in the implementation of MSIS system, and increase the reuse of software and the interoperability with corporate internal Information system.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1581-1585
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• 2005

This paper describes the design and implementation of a XCP (Xeline Control Protocol) network system. XCP is an information oriented protocol which delivers information with high reliability according to the predefined rule. The XCP network system is implemented with partly hardware and partly software based on the power line communication(PLC) environment. A network management tool which interacts with devices is also developed. In order to verify the feasibility of the proposed architecture, the implemented XCP network system is evaluated using a lighting control system.

• 경영정보학연구
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• 제7권1호
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• pp.241-256
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• 2005

본 연구는 전자정부가 성공적이기 위해 고려되고 관리되어야 할 영역이나 요인들, 즉 전자정부 구현의 주요 성공요소를 파악하고 이들 요소가 우리나라 전자정부의 구현 과정에서 얼마나 강조되고 중요한 요소로 인식되는 지를 살펴본다. 또한 이들 성공요소가 전자정부 성과와 실제 어떠한 상관관계가 있는지를 살펴보고, 이를 통해 한국의 전자정부를 성공적으로 전개시킬 수 있는 체계적 방안을 제시한다.

• Asia pacific journal of information systems
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• 제4권1호
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• pp.139-168
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• 1994

Many researchers and practitioners have paid much attention to identifying some critical factors for the successful implementation of the TPS, EDP and MIS. However, not much effort have been focused on the implementation issues of DSS which is different from TPS or MIS in terms of the scope of the system, evaluation criteria, decision types served, and level of users. Because of these differences, implemention of DSS should be planned and approached from different aspects of TPS, EDP and MIS. A conceptual model includes four characteristics as independent variables and three dependent variables such as system usage, user's satisfaction, and user's attitude. This paper is to empirically prove the usefulness of the model and to identify a model for the successful implementation of DSS in Korea. It will provide a better understanding of the variables associated with the successful DSS implementation.

• Asia pacific journal of information systems
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• 제20권2호
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• pp.1-21
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• 2010

e-Government is an innovative phenomenon around the globe for refurbishing public administration. Research to date, however, has been deficient in empirical studies of the factors that emerge out of the interplay of structure and human interactions responsible for successful implementation of e-Government projects. From the perspective of structuration theory, this study examines and explains the impact of this interplay in the implementation of an e-Government system, eSeva for local administration at one of the Indian state, The results suggest that the success of implementation of e-Government projects can be conceptualized as the outcome of persisting constructive interrelationships among the human, programmatic and institutional elements of e-Government and the critical learning and adaptation as a result of efforts at the structuration level.