• 정보처리학회논문지D
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• 제19D권1호
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• pp.39-48
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• 2012

소프트웨어 시스템을 효율적으로 유지보수 및 관리하기 위해서는 변경 전후의 시스템의 변경사항을 쉽게 파악할 수 있도록 시각적으로 표현해주는 것이 중요하다. 소프트웨어 변경사항 분석에 대한 연구는 많이 진행되어 왔으나 변경 유형뿐만 아니라 변경 정도를 정량화하고 이를 시각화하여 나타내려는 연구는 많지 않다. 이 연구에서는 자바로 구현된 시스템에 대해 클래스 다이어그램에서의 변경사항 분석 및 정량화 방법과 이를 시각적으로 나타내는 방법에 대해 제시한다. 먼저 소스 코드의 구조적인 변화를 검사하기 위해, 역공학을 이용하여 클래스 다이어그램을 추출한다. 그리고 클래스 다이어그램 정보를 이용하여 변경 유형 및 변경량을 정량화한 다음, 색상 스펙트럼을 이용하여 클래스 다이어그램에 변경량을 시각적으로 나타낸다. 이러한 시각화 기법을 이용하면, 유지보수 관리자가 쉽게 변경된 부분을 파악할 수 있어 유지보수에 소요되는 시간과 노력을 조금이라도 줄일 수 있다.

• 한국시스템다이내믹스연구
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• 제16권2호
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• pp.75-100
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• 2015

The purpose of this study is to analyze causation of Ecosystem service's trade-off(ES trade-off) and to establish baseline data for wise spatial planning and management. In order to understand why and how ES trade-off occurs, systems thinking and causal loops were employed. The causal loop of ecosystem service creation cycle includes profits quantification process, decision making process, spatial planning and management process, and ecosystem services creation process. The profits quantification process has a limitation that all ecosystem service categories were not included in profits quantification, because quantification method for cultural services is insufficient. These problems led to unequal discussion opportunity in decision making process. ES trade-off occurs through transition of ecosystem function in spatial scale and temporal scale. In spatial scale, land-use variation and resource-use variation contribute to change an ecosystem function for different ES category by spatial planning and management. In temporal scale, a change of an ecosystem function for different ES category is influenced by ecological succession, seasonal change and land cover variation, which are parameter from environmental features. This study presented that spatial planning and management should ecosystem service assessment in order to enhance balanced ecosystem services.

• 산업경영시스템학회지
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• 제22권52호
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• pp.241-246
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• 1999

In this study, to specify an evaluation of human sensibility, the types of color, intensity of illuminations and lights consisting work environmental condition are decided, and image data from examining the change of human sensibility followed by changes of the above three conditions are obtained. Using the factor analysis and quantification theory in multi-variate analysis type of Sensibility Ergonomics, determinating the structure of factors, specifying the relations of environmental conditions and factors can be done so that the structure of image on human sensibility space with the change of environmental conditions is analyzed.

• 한국조경학회지
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• 제30권6호
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• pp.17-25
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• 2003

The physical components of a river, such as water surface width/river width ratio, water level, and flow velocity vary according to different flowrates. Moreover, the riverside landscapes are greatly affected by the change of physical components of the stream or river. This paper provides an analysis of the influence of changing physical components of a river on the riverside landscape using a survey-based quantification method. The questionnaire was developed based on current literature, and was submitted to 326 people who each visited a representative station along the riverside.This survey was implemented three times at each representative station during periods of different flowrates. The results of this analysis and survey have Produced an understanding of the relationship between the variation of physical components and riverside landscapes. Survey results about the flow comparison are summarized as follows. Viewing riverside landscapes, most respondents are sensitive to the change of the flow velocity and prefer high water levels to low water levels. As a whole, respondents prefer abundant stream flows and moderate flow velocity in which they can perceive the flow of water. The minimum instream flows for riverside landscapes is estimated at each representative station by using a survey-based quantification method, and the estimated results of some representative stations were greater than the mean monthly flow at each station. The result of this analysis shows that establishing minimum instream flows for riverside landscapes is not only a technical problem, but also a legal problem. Therefore, in the to establish the instream flows in a river, the estimated results have to be considered as a relative standard. Regarding the survey results, respondents' satisfaction level didn't show any clear inclination according to the variation of various hydraulic properties. In determining the minimum instream flow using such an inquiry method, the structure of riverside scenery may vary according to the change of seasons or months. Therefore, to determine a consistent general inclination about the flow rate, it is necessary to have more detailed flow rates for each season or month combined with more inquiries.

• 한국환경복원기술학회지
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• 제17권4호
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• pp.1-15
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• 2014

Forest ecosystems generate variety of important goods and services for human well-being. As a growing concern of climate change and water shortage, it is necessary to quantify, model and map water balance in forest. In this study, we have analyzed 11 overseas forest water supply models (AIM, ATEAM, CENTURY, (E)SWAT, GUMBO, InVEST, PLM, SAVANNA, WaSSI, WaterGAP, WBM) and compared their scale, input and out data, availability of the models and analyzed the applicability of the models to Korea. As a result, InVEST and WaterGAP model appeared to be applicable for quantifying water provisioning services in Korea. A systematic approach for applying to evaluate water balance in forest was suggested based on our quantification approach.

• 대한교통학회지
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• 제10권3호
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• pp.59-74
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• 1992

The change of industrial structure, the expansion of economic scale, the elevation of national life level and rapid motorization bring about social problems that are traffic accident, traffic congestion, etc. Especially, big traffic accidents bring about the great number of dead and wounded person with damage of property. But there are no study results available mainly focused on the big traffic accident analysis. Accordingly, this study is essentially for the factor analysis of big accident types including laws violation and the assaulting driver's death using Quantification ll method.

• 대한교통학회지
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• 제11권2호
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• pp.27-44
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• 1993

The purpose of this study is to classify the regional structure of Pusan based on socio-economic phenomena in 1979 and 1991, and to analyze correlations between the regional structure change and traffic demend. To formalize the land-use by each zone, the Principal Component Analysis were performed by using 15 socio-sconomic variables. As a result of the analysis, five land-use factors(i.e., official, residential, commercial, manufactural, and other functions) in 1979 and four factors(i. e., residential, 3rd industrial, manufactural, and other functions) in 1991 were extracted as main regional structure components. It was proved that there is strong correlations between the regional structure change and traffic demand by using Quantification Theory II and also by testing correlation coefficient.

• 대한토목학회논문집
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• 제28권5D호
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• pp.597-607
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• 2008

첨단여행자정보시스템은 운전자에게 자동차 주행 중 필요한 소요시간정보, 교통정체정보, 우회정보, 유고정보 등과 같은 유익한 정보를 직접 제공할 수 있는 시스템으로 다른 시스템과 비교해 특히, 중요한 분야로 주목받고 있다. 하지만 아직까지 교통정보제공에 따른 고속도로이용자의 만족도와 같은 정성적인 항목에 대한 연구가 미진한 실정이다. 따라서 본 연구에서는 고속도로 이용자를 대상으로 개별면접 설문조사를 통해 수집된 고속도로의 교통정보만족도 이미지 데이터를 바탕으로 수량화 제II류에 의한 정준판별분석 및 정준상관분석을 실시하여 고속도로 교통정보 제공에 따른 이용자 만족도에 대한 영향 요인을 규명하였다. 또한 수량화 제I류에 의한 모형화를 실시하여 도로이용자가 느끼는 고속도로 교통정보 만족도에 대한 인식의 변화를 파악하여 고속도로이용자의 인식과 고속도로 교통정보 만족도의 상관성을 명확하게 규명하였다. 마지막으로 고속도로의 교통정보만족도 이미지 특성을 명확하게 규명하기 위하여 주성분 분석을 실시하여 고속도로이용자의 감성인식의 변화를 규명하고, 구조방정식이론을 이용하여 사회인식 및 고속도로 이용자의 실제인식의 변화가 고려된 고속도로의 교통정보 만족도 평가 모형을 개발하였다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.444-455
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• 2009

Great concerns on geotechnical risk & hazard assessment have been increased due to human and economic damage by natural disasters with recent global climate changes. In this paper, geotechnical problems in particular, landslides which is interested in European countries and North America, were mainly discussed. For these, 18 key topics on geotechnical risk and hazards which had been discussed at the LARAM 2008 workshop in Italy were analyzed after grouping by subjects. Main topic contents consisted of applications such as field measurement, early warning systems, uncertainty analysis of parameters using radar, optical data and statistical theory and so on. And the problems related to analysis of vulnerability and deformation due to earthquakes, investigation of gas zone using seismic reflection data in a landslide area, risk quantification and hazard assessment of landslide movements and multi-dimensional analysis for stability of complex slopes were attracted. Also, there were studies on risk matters of cultural heritage, the blockglide of clayey ground, simulations of debris flows based on GIS, quantification of the failure processes of rock slopes, a meshless method for 3D crack modelling, and finally risk assessment for cryological processes due to global warming.

• 환경영향평가
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• 제6권1호
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• pp.111-119
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• 1997

This study was carried out to suggest the best statistical test which may be used to quantify the change of water quality between two groups. Traditional t-test may not be used in cases where the normality of underlying population distribution is not assured. Three non-parametric tests which are based on the relative order of the measurements, were studied to find out the applicability in water quality data analysis. The sign test is based on the sign of the deviation of the measurement from the median value, and the binomial distribution table is used. The signed rank test utilizes not only the sign but also the magnitude of the deviation. The Wilcoxon rank-sum test which is basically same as Mann-Whitney test, tests the mean difference between two independent samples which may have missing data. Among the three non-parametric tests studied, the singed rank test was found out to be applicable in the quantification of the change of water quality between two samples.