• Journal of Digital Convergence
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• v.12 no.11
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• pp.171-181
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• 2014

As the use of mass media in modern politics grows, its influential power is getting larger than before. Therefore, fairness of broadcasting is identified as a very important factor in the current law. In particular, whether the mass media has balanced attitude toward election issues has been a critical point, which maked the current law have separate provisons to deal with it. As for the fairness and bias, most existing studies had focused on how long the media dealt with the specific political issues, which leads to only quantitative analysis. Also, most analysis of the contents had been based on very personal judgement and evaluation of researchers rather than following the criteria which is based on scientific method. This study introduced the AHP analysis method to compare the quantitative data and qualitative data altogether, which aims to develope the indicator for weighted measures and measurement of the fairness. Research findings reveals that each broadcaster has, MBC was highly biased and KBS and SBS followed that. Compared with existing studies regarding the political fairness of the media.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.280-284
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• 2003

국내에서는 매년 연안에서 발생하는 적조에 의해 많은 수산자원의 피해를 입고 있다. 이를 방재하기 위해 다양한 기술이 연구 개발되고 있으며, 원격탐사기법의 활용이 연구되어 왔다. 그러나 위성자료에 의한 연안해역에서의 적조관측은 시-공간적인 범위에서 많은 제약을 받고 있으며, 이로 인해 위성자료의 분석을 위한 적조 알고리듬은 국내외적으로 제시된 바가 매우 미약하다. 본 연구에서는 다양한 위성자료에 의해 관측된 적조의 패취를 구분하고 이를 정성적으로 분류해내기 위한 적조 알고리듬을 비교하였다. 특히 시-공간해상력에서 많은 차이를 가지고 있는 Landsat TM, AVHRR, SeaWiFS의 위성자료를 비교하여 관측주기가 다르고 분광해상력에서 차이를 나타내는 이들 위성자료를 이용한 적조 관측 알고리듬의 활용 가능성을 비교하였다. 분석된 결과를 바탕으로 국내연안에서 발생한 적조의 공간적 분포를 구분화하고 이를 현장관측 자료와 비교하여 분석결과의 정확도를 평가하였다.

• Journal of Navigation and Port Research
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• v.45 no.3
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• pp.95-101
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• 2021

Marine Incidents based on Heinrich's law are very important in preventing accidents. However, marine Incident data are mainly qualitative and are used to prevent similar accidents through case sharing rather than statistical analysis, which can be confirmed in the marine Incident-related data posted in the Korea Maritime Safety Tribunal. Therefore, this study derived quantitative results by analyzing the causes of marine incidents during berthing using various methods of statistical analysis. To this end, data involving marine incidents from various shipping companies were collected and reclassified for easy analysis. The main keywords were derived via primary analysis using text mining. Only meaningful words were selected via verification by an expert group, and time series and cluster analysis were performed to predict marine incidents that may occur during berthing. Although the role of an expert group was still required during the analysis, it was confirmed that quantitative analysis of marine incidents was feasible, and iused to provide cause and accident prevention information.

• Electronics and Telecommunications Trends
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• v.8 no.4
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• pp.143-156
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• 1993

ISDN 을 구축하기 위한 망구조로 ISDN 의 다양한 서비스 수용 관점에서 Single Star 형 망구조가 가장 잠재력이 우수한 구조로 평가되고 있으며 Single Star 형 구조로 구축될 때 High Count Optical Fiber Cable 과 광커넥터 (단심, 다심) 가 요구된다. 그중 광커넥터는 광 가입자 망의 구축을 위해 필수적인 부품으로서 기술 추세는 다심화, 복합 기능화, 소형화, 저가격화, 고성능화, 고신뢰성화의 방향으로 진행되고 있다. 본 고에서는 향후 국내에서 적용 가능한 광케이블용 다심 광커넥터 개발을 위하여 외국에서 개발되어 있는 제품의 정렬원리, 정렬 구조 및 제조기술을 분석하였으며 또한 국내의 수요를 분석하였다. 수요 분석은 과거의 생산 실적 자료가 없는 이유로 정량적 분석법보다는 전화 가입자 수요 자료와 가입자 선로의 광케이블 계획, 그리고 광 CATV 가입자 예측 자료를 이용한 정성적인 방법을 적용하였다.

• Journal of the Korean Geographical Society
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• v.47 no.6
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• pp.899-920
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• 2012

The purpose of this study is to examine and better understand student's perception of territory in the deterritorialized world. Students' sketch maps were analyzed to investigate the way of which they recognized the form of national territory, border, geographic location, and neighboring countries. In addition, students' values, attitudes, and affection for their homeland and other countries were observed through the awareness of North Korea, DMZ, and Dok-do island. Scrutinizing students' sketch maps and follow-up interviews provided much more in-depth context for understanding students' narratives about territorial identity than did the analysis of structured surveys since they can freely draw and sketch their cognition. A qualitative data analysis builded a code list with 67 codes generated from 626 quotations. These data were exported to CSV format to elicit and evaluate differential variances of territorial identity along with student's Social Studies score and Grade Point Average for inferential statistics and quantitative data analysis using SPSS. Based on the results of data analysis and discussion, some suggestions to build a model of territorial education and to develop teaching and learning materials in the domain of geography education were provided.

• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.2
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• pp.64-73
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• 2010

This research collected some multi-image information of Nakdong River Estuary Eulsukdo area in last 30 years, which are used as the basis information in running the qualitative analysis of the topography relief's deformation. First, to obtain the data, this research carried out a field survey and GCP measurement, then classified and collected the image information by analog and digital image. The acquired images which have passed a high-precise scan process and geometric correction is manufactured by Ortho Mosaic image, then divided them into 9 sections time period classification before we run a qualitative analysis. In late of 1980's there are many changes of environmental topography deformation of the Eulsukdo area which caused by large scale building constructions, appeared to be known through this research. And then in late of 1990's, we organized the wild cultivated lands, started the wetland restoration of the artificial ecology, in 2000's we are able to know the existence of topograph relief change which caused by big scale of bridge construction. Hereafter, in this quick process of the environmental and topographical change of this area caused by the 4 major rivers restoration project, the analysis results of this experiment are expected to be something applicable as important basic data.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.277-277
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• 2020

연속 측정된 수위자료를 유량자료로 환산하는 방법중의 하나인 수위-유량관계곡선식은 국내에서 널리 사용된다. 현장에서 측정된 유량자료로 개발되는 수위-유량관계곡선식(이하 곡선식)은 일반적으로 측정성과의 정확도가 그 정도를 좌우하지만, 개발과정에서 개발자의 주관적인 판단에 의해 좌우되기도 한다. 정확한 곡선식을 개발하기 위해 개발자는 수리학적 특성(수위-${\sqrt{Q}}$, 수위-유속, 수위-단면적 등)을 검토하고, 수문학적 특성(상하류 관계, 유출분석 등)을 검토하여 최종 곡선식을 결정하게 된다. 이러한 여러 검토들 중에 수위-${\sqrt{Q}}$ 검토는 비록 정성적인 검토임에도 불구하고 곡선식의 구간분리, 기간분리, 성과의 이상유무, GZF(Gauge Height of Zero flow) 등을 확인할 수 있는 방법으로 실무에 많이 이용된다. 대부분의 곡선식은 측정성과를 기반으로 개발되어 내삽부분에서는 그 정확도가 상당히 높다고 할 수 있지만 외삽부분은 구간분리의 위치, GZF 등에 따라 큰 차이를 보일 수 있다. 그러나 기존의 수위-${\sqrt{Q}}$ 에 의한 정성적인 검토는 개발자의 숙련도에 따라 곡선식의 정확도가 좌우되는 경향이 있다. 본 연구에서는 수위-${\sqrt{Q}}$ 검토의 이론적 배경을 살펴보고 일본 곡선식의 사례를 응용하여 수위-${\sqrt{Q}}$ 검토의 정량화를 시도하였다. 또한 보다 객관적인 구간분리 위치 결정 및 GZF산정의 방법을 제시하여 개발과정에서의 오류를 최소화 할 수 있고 이는 정확한 유량자료의 생산으로 이어질 것으로 기대된다.

• Journal of Korea Water Resources Association
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• v.43 no.7
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• pp.645-655
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• 2010

In this study, occurrences of relative probabilistic changing points between Chukwooki rainfall data (CWK) and modern rain gage data (MRG) were analyzed using Barry and Hartigan (BH) Bayesian changing points estimation method which estimated the changing points by calculation of change probabilities at each point. Since any natural phenomenon cannot be simulated identically and perfectly, a statistical method which can not consider the sequential order has its limitation on prediction of a specific time of occurrence. In this respect, Homogeneity analysis between CWK and MRG was performed through the occurrence investigation of relative probabilistic changing points for four rainfall characteristics of data sets using BH bayesian model which estimate the change point by calculating the relative probabilities in each data points. The results show that statistical characteristics of CWK are not different significantly from MRG, even though considered that there may be little quantitative difference CWK and MRG caused from limitation of measurement accuracy of CWK.

• Proceedings of the Korean Nuclear Society Conference
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• 1998.05a
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• pp.463-468
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• 1998

수직 관다발형 비등관에서의 밀도파 진동 및 유동 폭주형 이상유동 불안정성을 해석하기 위하여 선형화 기법 및 D-partition 방법론에 근거한 해석 코드(ALFS)를 개발하고 기존 실험자료 분석을 통해 코드의 예측 성능을 평가하였다. 그 결과 이상유동이 평형상태에 있는 것으로 가정하는 가장 단순한 모델인 HEM은 전반적으로 유동 불안정성 발생 시점의 열출력을 실험치보다 약 20% 정도 낮게 예측하였으며, 이상 유동의 속도 및 온도의 비평형 상태를 고려하는DEM과 DNEM에 의한 예측 결과는 7∼15%의 평균 오차 범위에서 실험 자료를 예측하는 것으로 나타났다.

• Journal of Korean Society for Geospatial Information Science
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• v.15 no.2 s.40
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• pp.77-85
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• 2007

According to the survey data during the Japanese Occupation Period, the length of South Korea's coastline is about 11,542 km, including the coastlines of land and islands. It will be very expensive and time-consuming to revise/renew accurately this coastline data through site survey, it will cost great money and time. Also, various development projects such as reclamation works on public waters, constructions of ports/harbors, etc. are frequently changing the coastal areas and coastlines, causing many renewal projects on coastal maps. For such reason, appropriate alternatives for site survey are necessary. This paper demonstrate the utilization of RTK-GPS survey data, qualitative analysis and 3D topographic analysis for extracting the change in five coastal areas (Songjeong, Haeundae, Kwanganri, Songdo and Dadaepo). The local experimental areas subjected for this research were limited to five coastal areas near Busan.