• 한국항만경제학회지
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• 제28권3호
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• pp.45-72
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• 2012

본 연구의 목적은 최근 10년간 일본의 5대 종합상사의 경영활동과 경영성과에 대한 데이터를 이용하여, 에너지 자원사업에서 나타난 경영성과의 의의 그리고 에너지 자원사업에 있어서의 국제물류기능에 대한 고찰을 수행하는 것이다. 연구내용으로는 선행연구 분석, 종합상사의 경영성과 분석, 에너지 자원사업의 국제물류기능에 대한 분석으로 구성된다. 분석방법으로는 회계 및 재무 데이터에 대한 통계적 분석과 조직분석, 사례분석을 이용하였다. 본 연구에서 일본 종합상사가 2000년대 10년간 에너지 자원사업에서 성공적으로 높은 매출 성장과 순이익을 달성한 사실을 밝힌다. 종합상사의 에너지 자원사업부문의 성공은 자원보유국에 대한 적극적 개발권익 확보와 국내외 관련회사에 대한 장기적 투자, 관련회사간의 공급연쇄체계 구축이라는 기업노력에서 성공 이유를 찾을 수 있다. 특히, 본 연구는 에너지 자원사업의 수직적 통합에서 국제물류기능의 중요성을 재인식하고 국제물류의 사업투자에 힘을 쏟는 종합상사의 역할을 설명하고자 하였다. 종합상사는 에너지 자원사업의 하류영역에서 상류영역에 이르는 비즈니스를 유기적으로 조직화하여 왔고, 최근 중류영역에서도 종합상사의 조직화기능, 투자사업기능, 정보 분석 및 제공기능을 충분히 발휘하고 있다. 종합상사의 국제물류기능의 강화는 에너지 자원의 생산, 물류, 유통판매에 이르는 비용을 통제할 수 있어 상품의 가격과 품질의 경쟁력을 높이는 데 도움을 줄 것이다.

• 한국전자거래학회지
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• 제7권2호
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• pp.173-190
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• 2002

Over the past decade, numerous software managers and engineers have been concerned with measuring the size and complexity of software systems. Function point analysis technique is one of the most popular software sizing techniques. A reasonable software development plan through cost and time estimation should be a prerequisite for the successful project at the beginning stage of the project. It is generally known that software size measurement is useful for this kind of estimation and the function point analysis technique would be more effective than the others. However, it is difficult to apply the technique to object-oriented methodology widely used in the software industry. Thus, the purpose of this study is to present a case study on how to apply function point analysis technique to sizing of the software systems based on UML. The results of this study can be useful to managers and engineers.

• 수산경영론집
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• 제24권2호
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• pp.69-82
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• 1993

The purpose of this paper is to estimate production function in the coastal fishing, especially long bag set net fishing and trap fishing using Cobb-Douglas production function with the three main variables: fishing quantity per tonage(WQFP), the number of working persons per tonage(WEMP), and the number of utilized fishing equipments per tonage(WEQU). The statistical results of such estimation reveal that fishing quantity per tonage can be expressed as a function of the number of working persons per tonage and the number of utilized fishing equipments per tonage. The estimated coefficients of WEMP and WEQU are statistically significant and also satisfy the requirements of Cobb-Douglas production function. This study also estimates marginal rate of technical substitution of labor in terms of capital (MRT $S_{LK}$ )in each long bag set net fishing and trap fishing. The resuits of this study show us that trap fishing has the technical characteristic of constant returns to scale(CRS) but long bag net fishing has that of decreassing returns to scale(DRS).

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.83-93
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• 2020

This empirical research aims to modeling and improving the forecasting accuracy of the volatility pattern by employing the Saudi Arabia stock market (Tadawul)by studying daily closed price index data from October 2011 to December 2019 with a number of observations being 2048. In order to achieve significant results, this study employs many mathematical functions which are non-linear spectral model Maximum overlapping Discrete Wavelet Transform (MODWT) based on the best localized function (Bl14), autoregressive integrated moving average (ARIMA) model and generalized autoregressive conditional heteroskedasticity (GARCH) models. Therefore, the major findings of this study show that all the previous events during the mentioned period of time will be explained and a new forecasting model will be suggested by combining the best MODWT function (Bl14 function) and the fitted GARCH model. Therefore, the results show that the ability of MODWT in decomposition the stock market data, highlighting the significant events which have the most highly volatile data and improving the forecasting accuracy will be showed based on some mathematical criteria such as Mean Absolute Percentage Error (MAPE), Mean Absolute Scaled Error (MASE), Root Means Squared Error (RMSE), Akaike information criterion. These results will be implemented using MATLAB software and R- software.

• 한국전자통신학회논문지
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• 제7권1호
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• pp.141-147
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• 2012

시각장애인들은 정보통신 기술의 발달에도 불구하고 정보소외 계층이다. 이들을 사무직종에 취업시키기 위해서는 정보통신 기술을 활용한 사무자동화 기술의 개발이 필요 하다. 사무 처리에 필요한 기술을 분석하고 이를 기술적으로 극복할 수 있는 통합솔루션을 개발함으로써 컴퓨터 활용 능력을 향상시킬 수 있는 VI 05를 개발하고자 한다. 개발된 VI 05는 사무 처리에 필요한 통합 솔루션으로 화면확대, 문자를 포함한 화면상의 데이터를 음성으로 변환시켜주는 기능, 정밀을 요구하는 작업을 예약 처리하여 그 처리 과정을 단순화 시켜는 기능 등 사무처리 과정에 필요한 기능을 갖추고 있다.

• 품질경영학회지
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• 제43권1호
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• pp.103-124
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• 2015

Purpose: This paper proposes a structured approach based on Quality Function Deployment (QFD) for service development in the banking industry. Methods: SERVQUAL is modified and adopted as a tool to understand customer requirements for the QFD. Fuzzy theory is used to resolve the subjectivity and ambiguity of customer requirements and satisfaction. This research also uses the importance- satisfaction model to construct an additional House of Quality (HOQ). A pair of houses of quality provides a confluence of results to avoid a risk of depending solely on the results of a single HOQ. Results: A case study is introduced with three domestic banks. Conclusion: The proposed approach effectively addresses a service development problem.

• 경영과학
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• 제21권3호
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• pp.71-84
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• 2004

CRS, which was initially developed to support airline reservation is now the main part of e-business of airlines, and it decides the degree of prompt and accurate itinerary for travelers due to the remarkable difference in availability inquiry and seats reservation information according to CRS joining level CRS joining level also decides the exactness of reservation, ticketing and traffic data collection and plays the most important role in the exactness of advanced forecast of demand, appropriate seats allocation, and overbooking. Therefore, it provides front end function like seats reservation, schedule display, fare inquiry on-line linked with CRS and back office function like sales result of travel agents, accounting administration. stock administration and customer administration and decides the level of an airline's e-business.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.1602-1605
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• 2008

We considered most general electron emission caused by temperature as well as electric field with a free electron gas model. The total electron emission current density comes from field emission effect where electron energy is lower than vacuum and from thermionic emission effect where electron energy is higher than vacuum. The total electron emission current density is shown as a function of temperature for constant electric field, and as a function of electric field for constant temperature.

• 벤처창업연구
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• 제9권4호
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• pp.155-161
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• 2014

본 연구에서는 신제품개발의 실시에 있어서 가장 중요한 기능분석의 단계를 제품의 설계 단계에서부터 소비자의 만족도를 조사하여 반영하였다. 품질기능전개를 이용하여 전개함으로서 원가절감과 품질개선의 합리적인 기능분석을 실시하고자 하는데 그 목적이 있다. 가치공학과 품질기능전개(QFD: Quality Function Deployment) 의 상호연계에 대한 필요성과 적합성을 분석하였다. 사례연구에서는 이러한 이론적인 배경 하에 품질기능전개를 이용하여 VE 기능 분석을 의료기기 제품에 적용하였다. 본 연구결과 소비자의 만족도와 품질기능전개를 이용하여 나타난 제품의 가치가 연구결과와 일치하고 있음을 파악하였다.

• 한국전자거래학회지
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• 제2권2호
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• pp.89-113
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• 1997

Modeling methodology has been widely used for analysis and design of a information system. Specially, under the CALS environments, modeling approach is more important because the enterprise functions are inter-related and information sharing speeds up the business. In this paper, we suggest functional requirements about modeling methodology for CALS by surveying the IDEF0 and ARIS. The former is FIPS 183 and the latter is basic methodology of SAP/R3 which is world-wide ERP system. The proposed functional requirements include all semantics of IDEF0 and adds some features. The first is adding modeling components which are semantic representations. In addition to ICOMs, we add the time and cost component which is required to execute the function. The second is tracing mechanism. When we need some information, we drive the functions related with the information by reverse tracing of the function which produces the information as a output and input. Through the tracing, we find out the bottleneck process or high cost process. This approach guarantees the integrity of data by designating the data ownership. Finally, we suggest the final decomposition level. We call the final decomposed function into unit function which has only one output data. We can combine and reconstruct some of functions such as 'lego block' combination.