• Journal of Broadcast Engineering
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• v.18 no.5
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• pp.702-712
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• 2013

In this paper, we proposed an algorithm that extracts the airway and lung without loss of information in spite of the pulmonary vessel and nodules of the chest wall in the chest CT images. We use a mask image in order to improve the performance and to save processing time of airway and lung segmentation. In the second step, by converting left and right lungs to binary image using the morphological information, we have removed the solitary pulmonary nodule to identify the value of the threshold lung and the chest wall. The last step is to connect the outer shell of the lung with cubic Spline interpolation by adding the perfect pixel and computing the distance of the removed part. Experimental results using Matlab verified that the proposed method could overcome the drawbacks of the conventional methods.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.10 no.1
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• pp.87-92
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• 2016

In this paper, we improved classification performance of benign and malignant lung nodules by including the parenchyma features. For small pulmonary nodules (4-10mm) nodules, there are a limited number of CT data voxels within the solid tumor, making them difficult to process through traditional CAD(computer aided diagnosis) tools. Increasing feature extraction to include the surrounding parenchyma will increase the CT voxel set for analysis in these very small pulmonary nodule cases and likely improve diagnostic performance while keeping the CAD tool flexible to scanner model and parameters. In AdaBoost learning using naive Bayes and SVM weak classifier, a number of significant features were selected from 304 features. The results from the COPDGene test yielded an accuracy, sensitivity and specificity of 100%. Therefore proposed method can be used for the computer aided diagnosis effectively.

• KOMUNHWA
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• no.59
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• pp.64-87
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• 2002

The Burial of the living with the dead in Yeongnam Region began to appear between the late 3rd and the early 4th centuries when dramatic social changes, such as the emergence of fortresses, stoneware, and the division of Gyeongju style and Gimhae style ou

• Clinical and Experimental Pediatrics
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• v.48 no.12
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• pp.1385-1388
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• 2005

Paragonimiasis is the infestation of lung flukes of the trematode genus Paragonimus. This disease is common in Asia, and the southern part of Korea has been known as one of the endemic areas of Paragonimiasis westermanii in Korea. Human infection is associated with specific dietary habits, such as eating freshwater crawfish or crabs. In a 6 1/2-year-old boy with pleural effusion and eosinophilia, paragonimiasis was diagnosed by skin test, serologic exam, and histologic identification of the parasites in a skin lesion. The same diagnosis was entertained in his elder sister with silent pleural effusion. We describe herewith these rare cases of paragonimiasis in two siblings who had a history of eating cooked freshwater crabs.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.11
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• pp.648-654
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• 2016

This paper investigates differences of tourism destination choices for sightseeing in Seoul between first-time visitors and repeat visitors. We constructed social network using secondary data from '2015 International Visitor Survey' and analyzed its density and centrality. Study results find that: (1) first-time and repeat visitors' tourism destinations are concentrated in areas located north of the Han river. The proximity of destinations suggests the positive effects resulting from the movement network. (2) As the result of degree centrality, closeness centrality, betweenness centrality, the highest ranking tourism destinations for both visitor groups are identical, but indexes of centralities in repeat visitors' destinations increase, including Shinchon/ Hongik University, Gangnam station, and Garosu-gil. Therefore, the roles of these destinations are becoming established as tourism hubs and are popular among younger visitors as well as attract repeat visitors. Results of this study will be a useful reference in developing and managing new tourism products.

• Journal of Chest Surgery
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• v.32 no.8
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• pp.761-764
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• 1999

The glomus tumor is a distinctive benign neoplasm with a small painful nodule, occurs most commonly in extremities but may be found elsewhere in the body. Its occurrence in the trachea or lung parenchyme has been recognized with extreme rarity and there has not been any report, to our knowledge, of its occurrence in the main bronchial glomus tumor. We report a case of a glomus tumor in the left main bronchus in a 67-year-old man who was presented with blood-tinged sputum and dyspnea, which was completely relieved by surgical resection.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.05a
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• pp.323-326
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• 2002

본 연구는 새로 개발된 에어쿠션의자의 인체 적합성 검증에 관한 실험으로 기존 에어쿠션의자와 스펀지 매트의자를 새로 개발된 의자와 비교 평가 하였다. 본 연구를 위해 설문지를 통한 사용자의 감성 및 사용성을 측정하였고 객관적 검증에 필요한 체압분포측정을 하였다. 실험의 결과 사용성 평가에서 대부분의 피험자들이 신형 의자가 보다 편안하고 안락하다고 응답하였으며, 각 의자를 비교하는 전체 14항목의 설문 중 11개 항목이 의자A에서 중요도 순위가 좋게 나타났다. 체압분포에서도 좌판의 경우 신형 에어쿠션의자의 체압의 평균값이 적게 나오면서 고르게 분포하였고, 좌골결절을 중심으로 좌, 우 대칭이 되게 나왔다. 또한 등판부위에서도 등판의 수직선을 중심으로 체압분포가 좌, 우 대칭이 되게 나왔다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.9 no.2
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• pp.159-170
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• 1998

Man-made noise in PCS frequency range are measured using the three axis antennal with common port and the measured data are statistically treated for modeling. The can optimal parameters of the measured APD curves can be calculated fast by using the Composite Approximation Algorithm. The calculated APD parameters can reduce the EM-environments Data Base memory and also be applied to determine the output and sensitivity margin of the transmitter and the receiver.

• Journal of Korean Society of Transportation
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• v.26 no.3
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• pp.97-108
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• 2008

Like always selecting anything in everyday lives, We must choose a travel mode to achieve its purposes driven by diverse factors such as travel distance and accessibility of public transit. Assuming that they are differentiated depending on whether a travel purpose is commuting, shopping or leasure, the study investigated their distinguished impacts on travel mode choice by using binary logit models by travel purpose and mode. Identifying that travel time has an important role in choosing a travel mode whether its purpose is any, the results show that longer travel time tends to increase the possibilities of taking public transit, transfer and rail transit rather than bus. In addition, the easy use of a car and its parking to travelers is more important in their choosing an automobile as a travel mode than other factors. In the models of identifying the probability of mode choice between bus and rail transit, we find that its choice tends to be decided by travelers depending on whether any public transit mode is more accessible to them. When comparing the results among travel purposes, we identify that the easy use of a car and parking in their destination is more important for commuting, while accessibility of public transit in their origination increases the probability of taking a transit mode.

• Journal of the Korean Institute of Landscape Architecture
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• v.44 no.3
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• pp.37-46
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• 2016

This study intends to analyze the characteristics of imageability elements of the tourism space using the spatial cognitive mapping method. For this purpose, this study selects Nami Island as a study site and collects spatial cognitive maps or sketches of the study area focused on tourists in their 20s and 30s after they visit the site. The results of frequency analysis on imageability elements of Nami Island show that paths, landmarks, and edges are more frequently cognized to tourists in their 20s and 30s than districts and nodes. This study determines a new imageability element of the tourism space, "moving objects," such as or bikes or animals. Tourism planners or landscape designers can consider these useful imageability elements as important planning factors in order to improve and clarify the images of tourism spaces.