• 대한안전경영과학회지
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• 제6권3호
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• pp.109-120
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• 2004

As an information-oriented era arrives, an environmental change of Internet marketing is going with high speed and such open door around the countries is providing worldwide companies with a new business opportunity. Now, Internet is a new communication tool for global network and is emerging as a new e-commerce market. Also, this trend is having an effect upon online site that sell crafts. Hence, this study aims to select artshop, which simultaneously operate off line and online while sell crafts, to research the present status, and analyze the problems to suggest the activation plans for effective Internet commerce. Accordingly, this study suggested six models for the settlement of these problem s and the activation plans as following: offer of the various works and the contents, security of price competition, reinforcement of marketing, establishment of brand recognition, management of customers and settlement of payment ways etc. The commerce of crafts in the artshop is only early stage today, but it is expected to grow into an universal connection way of information and buying which transcend space and to be briskly used for securing the competition of crafts in 21century.

• 수산해양교육연구
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• 제23권3호
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• pp.515-525
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• 2011

Due to changes in internal and external environment of coastal & offshore fishery such as decrease in coastal & offshore fishery resources, rising labor costs, rising gas prices, rising turnover rate of seamen, and intensified avoiding 4D types of business, the domestic seamen's avoidance of going to sea is being intensified. In order to solve the problems of domestic seamen shortage, coastal & offshore fishery businesses prefer to employ foreign seamen whose wages are relatively low, so employment of foreign seamen continues to increase. However, the foreign seamen system has the problems in selecting and managing seamen but these problems have been not adequately dealt with, so damages to fishery business continue to occur due to the seamen's deserting. The cases, in which foreigners who entered the country to take the sea in coastal & offshore fishing boats deserted their workplace, recorded 36.4% as of 2010. So in order to achieve the purpose of the foreign seamen system itself through rational management of foreign seamen, the exclusive organization to manage foreign seamen should be established and the system to rationally select foreign seamen who have experiences of fishery should be established. The utilization of foreign seamen during off season needs to be maximized by establishing the employment connection system for the management of foreign seamen and employment stabilization, and the exclusive organization for education of foreign seamen and the organization for nurturing domestic seamen need to be established and operated.

• 한국시뮬레이션학회논문지
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• 제12권3호
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• pp.55-68
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• 2003

As mobile IP has been suggested only to support mobility of mobile station(MS) by which it dose nothing but guarantee MS's new connection to the network, it is for nothing in Quality of Service(QoS) after handoff of MS. QoS is very important factor in mobile IP network to provide multimedia applications and real-time services in mobile environment, and it is closely related to handoff delay Therefore as a main issue in mobile IP research area, handoff delay problem is actively studied to guarantee and promote QoS. In this paper, in order to resolve such a problem, we suggest Simple Network Management Network(SNMP) information-based routing that adds keyword management method to information-based routing in active network, and then propose QoS controlled handoff by SNMP information-based routing. After setting up routing convergence time, modeling of suggested method and existing handoff method is followed in order to evaluate the simulations that are carried out with NS-2. The result of simulation show the improvement of handoff delay, and consequently it turns off the QoS has been improved considerably.

• 산업경영시스템학회지
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• 제37권4호
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• pp.168-176
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• 2014

The enterprise life cycle derived from the product life cycle consists of introduction, growth, maturity and decline. The enterprise tries to reach the growth stage early and stay at the maturity stage stably through expanding its businesses and investing for the new technology. The public enterprise is not different but its life cycle is more prone to be affected by the national development and policy. A typical example can be found in the case of the quasi market SOC public enterprise which spends massive amount of fund to provide social infrastructure. After the fulfillment of its mandated mission it is exposed to the pressure of a merger or a closure usually because large portion of the debt is directly linked to the national financial stability and credit ratings. This research is focused on the variables that influence the life cycle of the quasi market SOC public Enterprise for its future competitiveness is in connection with its normalization, advancement and rationalization. In this respect, categorical variables system centering on public characteristics and profitability drew eight categorical variables such as policy outcomes, public benefit, finance and business values etc.

• ETRI Journal
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• 제14권3호
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• pp.1-15
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• 1992

Stand-slone 신호 중계 교환기인 SMX-1(Signalling Message eXchange No.1)은 통신망의 신경계인 공통선 신호망(Common Channel Signalling Network)의 하부 구조를 구성하는 시스팀이다. SMX-1에 총괄명 번역서비스를 수용하게 되면 통신망 사용자에게 통신망 내부의 구성 및 구성 요소의 변화에 구속되지 않고 지속적인 지능망 서비스를 제공할 수 있게 된다. 본 연구에서는 SMX-1의 설계 이념에 부합되도록 신호연결 제어부의 기능을 소프트웨어 및 하드웨어적으로 분산화하여 설계, 구현함으로써 SMX-1의 고신뢰성 및 신속성을 추구하였다. 소프트웨어적으로는 총괄명번역 서비스 제공을 위해 국제 전신 전화 자문 회의(CCITT)권고 Q.711-Q.714에서 정의하고 있는 신호연결 제어부(SCCP:Signalling Connection Control Part)의 기능을 관리 기능(SCMG : SCCP Management Part)과 루팅 제어 기능(SCRC : SCCP Routing Control Part)으로 분리하여 각각의 기능을 이중화하여 설계, 구현하였다. 하드웨어적으로는 관리 기능을 하나의 보드로 집중화하고 루팅 제어 기능을 여러개의 보드로 분산화하였다. 분산되어 있는 루팅 제어기능이 총괄명번역 서비스를 수행하기 위하여 사용하는 루팅 제어 데이터의 일치성을 유지하기 위하여, 관리 기능에 루팅 제어 데이터를 총괄적으로 관리하는 루팅 제어 데이터 관리 기능(RCDMFB : Routing Control Data Management Function Block)과 운용 관리 기능 (OMS : Operation and Management Subsystem)의 제원관리 지원기능을 구현하였다.

• 대한안전경영과학회지
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• 제13권4호
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• pp.9-16
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• 2011

Modern systems become more complex and the demand for systems safety goes up sharply. Thus, the proper handling of the safety requirements in the systems design is getting greatly increased attention these days. Hazard analysis has been one of the active areas of research in connection with systems safety. In this paper, we study a subject on how the hazard analysis results can be incorporated in the systems design. To this end we set up a goal on how to systematically generate safety requirements that should reflect hazard analysis results and be implemented in the systems design and development. To do so, we first review the process for systems design and suggest the associated Model. Then the process and results of hazard analysis are analyzed and Modeled particularly with emphasis on the safety data. The resulting data Model incorporating both the hazard analysis and system life cycle is used in the generation of safety requirements. Based on the developed data Model, the generation of the requirements, the construction of requirements DB, and the change management later on is demonstrated through the use of a computer-aided software tool.

• 대한산업공학회지
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• 제36권3호
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• pp.203-211
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• 2010

This study examines a cointegrated vector autoregressive (VAR) model where parameters are subject to switch across the regimes in the term structure of interest rates. To employ the regime switching framework, the Markov-switching vector error correction model (MS-VECM) is allowed to the regime shifts in the vector of intercept terms, the variance-covariance terms, the error correction terms, and the autoregressive coefficient parts. The corresponding approaches are illustrated using the term structure of interest rates in the US Treasury bonds over the period of 1958 to 2009. Throughout the modeling procedure, we find that the MS-VECM can form a statistically adequate representation of the term structure of interest rate in the US Treasury bonds. Moreover, the regime switching effects are analyzed in connection with the historical government monetary policy and with the recent global financial crisis. Finally, the results from the comparisons both in information criteria and in forecasting exercises with and without the regime switching lead us to conclude that the models in the presence of regime dependence are superior to the linear VECM model.

• 디지털콘텐츠학회 논문지
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• 제15권1호
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• pp.77-85
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• 2014

빠르게 변화하는 비즈니스 환경 속에서 다양한 요구사항에 유연하게 대처하기 위한 방법의 일환으로 서비스 지향 아키텍처를 도입하고 있다. SOA는 기존의 업무 중심의 시스템 설계에서 기능 중심의 서비스로 분류하고 서비스 조합을 통해 업무를 구성하는 구조이다. 본 논문에서는 현재 실무에 활용하고 있는 창고관리시스템을 대상으로 SOA기법을 도입하여 기존의 설계로 인해 많은 기능이 중복적으로 구현되고 그에 따른 유지보수의 어려움을 줄이는 방안을 제안한다. 또한 기존의 전사적 자원관리 시스템과의 연동을 고려하여 시스템아키텍처를 개선한다.

• 정보처리학회논문지A
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• 제8A권4호
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• pp.411-418
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• 2001

본 논문은 웹 브라우저를 통해 관리되는 홈네트워크 관리 시스템의 설계 및 구현에 대해 기술한다. 디지털 가전기기들은 IEEE1394 버스에 의해 퍼스널 자바 환경을 갖춘 셋톱박스와 연결된다. 셋톱박스에서 동작하는 내장형 웹 서버는 HTTP1.1의 세션 유지 기능과 JSDK2.1을 지원하는 서블릿 엔진을 포함한다. 홈 네트워크 관리 프로그램은 서블릿 형태로 개발되며 IEEE1394 디바이스 드라이버 기능을 접근하기 위해 JNI를 사용한다. 각 가전기기를 위한 사용자 인터페이스 애플릿은 홈 네트워크 관리 웹 문서에서 관련 아이콘을 선택한 경우 클라이언트로 다운로드되고, TCP/IP API를 통해 관련 서블릿과 통신한다.

• 한국항공운항학회지
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• 제29권3호
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• pp.100-110
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• 2021

Building Information Modeling(BIM) technology continues to develop and is now being applied to infrastructure facilities. As smart technology based on BIM is applied to the construction industry, the construction of the same data in a common environment is considered to be a very important step in various applications. This study was conducted on methods to establish an open BIM-based airport facility information common data environment. Therefore, this study develops the element technology to establish a common data environment for the integrated management of airport facility information, and aims to standardize data in the common data environment among various technologies and applications. In order to achieve the aim, in this study, the required technologies were derived by examining the common data environment and examining the civil engineering facility field and the case of integrated airport facility management. Through this, standards and development for information standard framework, information requirement level, BIM guidebook, and BIM library were developed in connection with national and higher standards. Through these standards, it is expected that the integrated management of various airport facilities will be efficiently carried out through a standard data platform in the future.