• Proceedings of the KIEE Conference
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• 2008.10b
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• pp.419-420
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• 2008

근래 무선통신기술의 발전으로 휴대폰 등, 무선기기의 사용이 급증하고 있으며, 주택가 인근에는 많은 무선기지국들이 시설되어 있다. 이러한 무선기기의 무선시설물은 목적한 바의 신호 송출을 위하여 전자파를 방출하고 있다. 본 논문에서는 무선기지국 안테나 근처에 서 있는 사람이 전자파에 노출될 때를 가정하여 2-ray 전파모델을 적용하려 참조규격의 전기장 강도 및 전력밀도를 산출하는 새로운 평가방법을 제시하고, 본 방법을 적용하여 일례의 전자파인체노출기준의 적합성을 평가한 결과를 분석, 고찰한다.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.16 no.4
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• pp.491-505
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• 2018

As an alternative to deep geological disposal technology, which is considered as a reference concept, the domestic applicability of deep borehole disposal technology for high level radioactive waste, including spent fuel, has been preliminarily evaluated. Usually, the environment of deep borehole disposal, at a depth of 3 to 5 km, has more stable geological and geo-hydrological conditions. For this purpose, the characteristics of rock distribution in the domestic area were analyzed and drilling and investigation technologies for deep boreholes with large diameter were evaluated. Based on the results of these analyses, design criteria and requirements for the deep borehole disposal system were reviewed, and preliminary reference concept for a deep borehole disposal system, including disposal container and sealing system meeting the criteria and requirements, was developed. Subsequently, various performance assessments, including thermal stability analysis of the system and simulation of the disposal process, were performed in a 3D graphic disposal environment. With these analysis results, the preliminary evaluation of the domestic applicability of the deep borehole disposal system was performed from various points of view. In summary, due to disposal depth and simplicity, the deep borehole disposal system should bring many safety and economic benefits. However, to reduce uncertainty and to obtain the assent of the regulatory authority, an in-situ demonstration of this technology should be carried out. The current results can be used as input to establish a national high-level radioactive waste management policy. In addition, they may be provided as basic information necessary for stakeholders interested in deep borehole disposal technology.

• The KIPS Transactions:PartD
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• v.11D no.4
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• pp.893-900
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• 2004

This paper is to define the method that develops the software In proper to application areas of Geographic Information Systems and design patterns according to functions and roles that implement the system for safety evaluation of the groundwater well based on an object oriented spatial model. In order to design the user interface of the groundwater well, this paper proposes the framework that should classify only requisite components adaptable to various application areas. By specifying De pattern appropriate to the application domain and designing the analysis pattern using the UML based on the object oriented methodology. this paper shah contribute to enhance the reuse of components that can develop and distribute a .large scale open system.

• Journal of the Korean Institute of Landscape Architecture
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• v.18 no.4
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• pp.117-125
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• 1991

본 연구는 경관의 미적선호의 정보처리모형을 제시하고 LISREL 방법론을 사용하여 한강경관의 미적선호의 강화에 기여하는 구조적 인자 를 확인함으로써 한강경관의 시각적 질의 개선방안을 제시하는데 그 목 적이 있다. 이를 위해 한강 경관을 대표할 수 있는 전형적이고 시각적으 로 현저한 40개의 경관의 슬라이드를 120명의 피조사자에게 보여주고 미 적평가, 선호, 가독성, 복잡성, 통일성, 신비성을 11등급의 척도를 사용하 여 측정하고 LISREL 분석방법으로 분석하였다. 경관번호 30을 제외하고 모형의 전체적 적합도가 매우 높은 것으로 나타났다. 분석의 결과 경관 에 대한 미적 평가와 선호가 경관의 미적선호를 타당성있게 나타내는 변 수로 확인되었으며, 통일성, 가독성, 신비성의 구조적 변수들이 경관의 시각적 질을 유의하게 강화시키는 인자로 판명되었다. 이 결과를 기초로 하여 한강 경관의 시각적 질을 개선하기 위한 방안을 제시하였다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.05a
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• pp.244-250
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• 2002

현재 대부분의 시뮬레이터는 6개의 축으로 대상체의 운동자유도를 모사하는 모션 시스템을 사용하고 있다. 본 연구개발에서 개발되어지고 있는 시뮬레이터는 일반적인 Stewart 형식이 아닌 운동 대상체의 운동자유도를 짐발(Gimbal)형으로 재현하고자 하였다 이를 위해 실시간 스케줄러와 H/W 입출력 및 통신 드라이버에 대한 개발을 수행하였고, 시뮬레이션에 적합한 정확도와 실시간성을 유지하도록 롤러코스터 상에서 이루어지는 차량운동을 모델링 하였다. 또한 인간감성의 절용을 고려한 짐발형 모션 시스템의 운동 재현을 위해 워시아웃(Washout) 알고리즘을 개발하였다. 특히, 짐발형 모션 시스템은 그 연구 사례를 찾기 힘든 것으로 운동 모사성의 객관적 검증과 탑승자에 대한 시뮬레이터의 영향을 평가하기 위해 감성평가를 실시하였다. 감성평가를 위해 평가지에 의한 주관적 평가 방법과 탑승자의 생리신호를 측정하는 객관적 평가방법을 사용하였다.

• Journal of The Korean Association of Information Education
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• v.21 no.3
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• pp.267-275
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• 2017

The purpose of this study is to analyze the teachers' perceptions about the various evaluation methods used in SW education and to find ways to improve the usefulness of the field. To do this, we surveyed the teachers who were educated about SW education evaluation. As a result of the study, it was recognized that the use of output, portfolio, and observation evaluation in SW education class is suitable for evaluating Computational Thinking(CT) and useful for field application. On the other hand, paper and self-evaluation are useful for field application, but they are relatively inadequate to evaluate CT. Portfolio, design, and interview evaluations are good for measuring CT, but they are difficult to apply to the field. Also, evaluation criteria, evaluation factors, and strategies were found to be difficult to apply. Therefore, we suggest the necessary measures to apply SW education evaluation method more effectively.

• Journal of Korea Multimedia Society
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• v.13 no.5
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• pp.627-640
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• 2010

In a web 2.0 environment, as a wide range of web services are being utilized, it requires quick and convenient way to develop web applications. For this purpose, the framework has been recently introduced and has been applied to web applications. However, software quality application model has not been presented for the web application using framework. In this paper, we develop web application, online library system using a number of frameworks. The system allows users to freely share book information. In order to evaluate the system, we present new software quality evaluation model for web applications using framework. The five quality attributes, functionality, usability, efficiency, maintainability, stability are defined based on the international standard for software quality evaluation, ISO/IEC 9126-2. We also propose the evaluation metrics for the web application using framework and perform quantitative evalzuation for the online library system.

• The Korean Journal of Applied Statistics
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• v.27 no.2
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• pp.317-330
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• 2014

Bipolar disorder is a psychopathy characterized by manic and major depressive episodes. It is important to determine the degree of depression when treating patients with bipolar disorder because 810% of bipolar patients commit suicide during the periods in which they experience major depressive episodes. The Hamilton depression rating scale is most commonly used to estimate the degree of depression in a patient. This paper proposes using the Hamilton depression rating scale to estimate the effectiveness of patient treatment based on the linear mixed effects model and the transition model. Study subjects were recruited from the Seoul National University Bundang Hospital who scored 8 points or above in the Hamilton depression rating scale on their first medical examination. The linear mixed effects model and the transition model were fitted using the Hamilton depression rating scales measured at the baseline, six month, and twelve month follow-ups. Then, Hamilton depression rating scale at the twenty-four month follow-up was predicted using these models. The prediction models were then evaluated by comparing the observed and predicted Hamilton depression rating scales on the twenty-four month follow-up.

• Journal of the Institute of Convergence Signal Processing
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• v.9 no.1
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• pp.18-23
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• 2008

In this paper, we propose the input image selection-method to improve the reconstructed high-resolution (HR) image quality. To obtain ideal super-resolution (SR) reconstruction image, all input images are well-registered. However, the registration is not ideal in practice. Due to this reason, the selection of input images with low registration error (RE) is more important than the number of input images in order to obtain good quality of a HR image. The suitability of a candidate input image can be determined by using statistical and restricted registration properties. Therefore, we propose the proper candidate input Low Resolution(LR) image selection-method as a pre-processing for the SR reconstruction in automatic manner. In video sequences, all input images in specified region are allowed to use SR reconstruction as low-resolution input image and/or the reference image. The candidacy of an input LR image is decided by the threshold value and this threshold is calculated by using the maximum motion compensation error (MMCE) of the reference image. If the motion compensation error (MCE) of LR input image is in the range of 0 < MCE < MMCE then this LR input image is selected for SR reconstruction, else then LR input image are neglected. The optimal reference LR (ORLR) image is decided by comparing the number of the selected LR input (SLRI) images with each reference LR input (RLRI) image. Finally, we generate a HR image by using optimal reference LR image and selected LR images and by using the Hardie's interpolation method. This proposed algorithm is expected to improve the quality of SR without any user intervention.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.6
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• pp.1317-1322
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• 2018

In order to complete the AR UI design simply and quickly, the usable factors were studied in this thesis. The primary aim of interface design is to increase the usability. The various factors should be considered together when we evaluate the usability. The idealized usable working model is based on user-centered with the aim of perceiving the interests of users, operating easily and completing targets. In order to ensure the types of usable factors, literature survey method had been used and a total of 85 usable factors had been collected by this survey. To make the usable factors can adapt the augmented reality, the concept of factors should be redefined. We extract the items which is adaptable and user-centered, combine or delete the items that have the same meanings and finally select 25 usable evaluative factors. Then we take HCI professional as the object and collect the data by Heuristic Evaluation. We systematize the usable factors by Principal Component Analysis, and observe the correlation between the usable factors and classify those which have high correlation.