Earticle

This paper proposes a new model to· evaluate the effectiveness of websites using balanced scorecard (BSC) and weighted formula based methods.fisrt, we Use BSC method to find out the cause-and-effect relationships between the measure and website activities, and our proposed model evaluates website performance from six perspectives: business value, operational excellence, customer value, website interface, management, maintenance, and learning and innovation. Next, we usedformula-based approach to identify what makes website performance low by developing the evaluation formula through investigating website users; finally, case studies of two famous websites are given to show how our method can be used Our evaluation model can not only evaluate website performance but also suggest how to improve performance.

This paper proposes an efficient fault detection method for onboard degaussing coils which are installed to minimize underwater magnetic fields due to the ferromagnetic hull. To achieve this, the method basically uses field signals measured at specific magnetic treatment facilities instead of time-consuming numerical field solutions in a three-dimensional analysis space. In addition, an analytical design sensitivity formula and the linear property of degaussing coil fields is being exploited for detecting fault coil positions and assessing individual degaussing coil currents. Such peculiar features make it possible to yield fast and accurate results on the fault detection of degaussing coils. For foreseeable fault conditions, the proposed method is tested with a model ship equipped with 20 degaussing coils.

For the last couple of decades many studies have been carried out to find out solutions to improve the effectiveness and productivity of the plate forming process. The practical way for the automation of the plate forming process has not been, however, developed yet. Since the characteristics of heating machines may be different form each other, it is necessary to investigate the thermal deformation characteristics of the heating machine to be used in the automation system. And their characteristics may be updated as new information about thermal deformation by heating is accumulated. In this paper, data base system has been constructed based on the results of experiments and numerical analyses, which will be used in deriving the deformation estimation formula. The computer code which can automatically derive the deformation estimation formula has been also developed. This paper also illustrates how the formula is updated as experimental data are added. From the present findings, it can be said that the automatic deriving procedure may be important in the automated plate forming system since the heating line information to be generated must be directly influenced by the deformation estimation formula.

최근 들어 소프트웨어의 점점 복잡화, 대형화가 되고 있는 추세에 의해서 컴포넌트의 중요성이 부각되면서, 컴포넌트를 이용한 시스템의 모델링(Modeling) 기법들이 등장하고 있다. 그리고, 이런 모델링 기법들을 적용한 응용 분야가 점차 확대되어 가고 있는 가운데, 효과적으로 시스템 모델링을 할 수 있도록 하고자 기존의 복잡한 다 계층의 모델링 표현 방식의 구조를 탈피한 3계층 표현 방식의 아키텍처를 가진 모델링 기법을 제안한다. 그리고, 하나의 작은 예제를 통해서, 실제 적용되는 과정을 보면서, 기존의 방법과의 차이점에 대해서 관찰 및 분석, 그리고, 추후 적용의 기대효과에 대해서 알아본다.