• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.7
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• pp.4679-4688
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• 2015

The purpose of this study was to identify the factors influencing sexual consciousness, gender egalitarianism and awareness levels of sexual harassment among college students. Methods: As a descriptive, correlative study, the data was collected from 274 college students. The copies of the questionnaire were collected from April 23 to 30, 2015. The data was analyzed using a t-test, ANOVA, Pearson correlation coefficients and multiple linear regression. Results: Sexual consciousness, gender egalitarianism and sexual harassment awareness levels averaged 3.00 (range of score 1-5), 1.97(1-4) and 4.09 (1-5), respectively. Awareness levels of sexual harassment had a positive correlation with sexual consciousness, and a negative correlation with gender, major field of study, living patterns, and gender egalitarianism. Conclusion: This study has identified sexual consciousness and gender egalitarianism, as well as the associated influencing factors, among college students. The results of this study are expected to be used as basic data for developing strategies and programs for the prevention of sexual harassment among college students.

• Journal of the Korean Institute of Gas
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• v.23 no.4
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• pp.19-27
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• 2019

The consumption of liquefied natural gas (LNG) has increased annually due to the strengthening of international environmental regulations. In order to produce stable and efficient LNG, it is essential to divide the global (overall) operating condition and construct a quick and accurate monitoring system for each operation condition. In this study, multi-mode monitoring system is proposed to the LNG plant fractionation process. First, global normal operation data is divided to local (subdivide) normal operation data using global principal component analysis (PCA) and k-means clustering method. And then, the data to be analyzed were matched with the local normal mode. Finally, it is determined the state of process abnormality through the local PCA. The proposed method is applied to 45 fault case and it proved to be more than 5~10% efficient compared to the global PCA and univariate monitoring.

• Journal of the Korea Society of Computer and Information
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• v.19 no.3
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• pp.17-24
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• 2014

In this paper, we propose a mobile application categorization method using word cluster information. Because the mobile application description can be shortly written, the proposed method utilizes the word cluster seeds as well as the words in the mobile application description, as categorization features. For the fragmented categories of the mobile applications, the proposed method generates the word clusters by applying the frequency of word occurrence per category to K-means clustering algorithm. Since the mobile application description can include some paragraphs unrelated to the categorization, such as installation specifications, the proposed method uses some word clusters useful for the categorization. Experiments show that the proposed method improves the recall (5.65%) by using the word cluster information.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.2
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• pp.124-132
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• 2014

In this paper, we present a novel backlit region detection and contrast enhancement method using fuzzy C-means clustering and adaptively partitioned block based contrast stretching. The proposed method separates an image into both dark backlit and bright background regions using adaptively partitioned blocks based on the optimal threshold value computed by fuzzy logic. The detected block-wise backlit region is refined using the guided filter for removing block artifacts. Contrast stretching algorithm is then applied to adaptively enhance the detected backlit region. Experimental results show that the proposed method can successfully detect the backlit region without a complicated segmentation algorithm and enhance the object information in the backlit region.

• Journal of the Korea Fashion and Costume Design Association
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• v.17 no.1
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• pp.25-37
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• 2015

본 연구의 목적은 해외여행 동기에 따라 여행자들의 집단을 나누고 각 집단별로 해외여행시 구매하는 상품이나 이용 매장의 특성을 비교하는데 있다. 문헌연구를 통해 여행동기와 구매상품의 종류와 속성, 쇼핑장소의 유형과 속성에 대한 주요 문항들을 추출하였다. 20-50대 해외여행 경험자 431명을 대상으로 설문조사를 실시하였고 K-평균 군집분석을 통해, 적극적 집단, 소극적 집단, 자연 쾌락추구 집단, 가족 발견추구 집단의 4개의 군집이 확인되었다. 적극적인 여행자들은 해외에서 구매하는 모든 상품종류에 대해 가장 높은 관심을 보였으며 다른 세 집단보다 유의하게 차이가 있었다. 특히 소극적인 여행자나 자연 쾌락추구 여행자들보다 패션 사치품이나 기념품 구매를 중요하게 생각하는 것으로 나타났다. 또한 상품 속성에서 디자인과 명성, 실용성, 가격과 품질 등의 요인들을 중요하게 고려하였다. 구매 장소 측면에서는 적극적 집단은 지역 시장, 패션매장, 선물매장 순으로 선호하였으며 소극적인 여행자들은 패션매장을 더 선호하는 것으로 나타났다. 구매장소 속성의 중요도는 편의성, 디스플레이, 매장위치 및 판촉활동 순으로 중요시되었으며 적극적인 여행자들은 다른 세 집단 여행자들보다 매장 편의성에 대한 관심이 유의하게 높았다. 가족 발견중심 여행자와 자연 쾌락추구 여행자 집단은 쇼핑행동이 비슷하거나 일부 요인에서만 차이가 있었다. 소극적 여행자들은 나머지 세 집단과 구별되게 모든 쇼핑행동에 대한 관심이 낮았다. 여행동기에 근거한 시장세분화는 서로 다른 쇼핑행동을 예측할 수 있는 변별력이 있음을 보여주었다.

• Environmental and Resource Economics Review
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• v.18 no.2
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• pp.311-344
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• 2009

The hypothesis that the common market equilibria for housing attributes are attained within distinctive submarkets was tested. Markets for housing attributes with greater supply flexibility, i.e., structural variables, were found to be closer to their common equilibria than markets with less supply flexibility, i.e., neighborhood and distance variables. In addition, submarkets with greater mobility were found to achieve common market equilibria for more housing attributes with greater supply flexibility, but not for housing attributes with lower degree of supply flexibility. Results suggest supply flexibility and occupier mobility are both necessary conditions for achieving common market equilibria for housing attributes.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.189-190
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• 2015

전 세계는 지난 135년간(1880~2014년) 지구온난화에 따른 빈번해진 이상기후로 평균 기온은 $0.85^{\circ}C$ 상승하였으며 이로 인해 강우강도, 강우량이 증가하고 있다. 이처럼 기후변화는 수문현상에 많은 영향을 미쳐 물 순환 과정의 정확한 파악을 더욱 어렵게 하고 있으며 안정적인 물 공급을 위한 수자원계획 수립에 불확실성을 증대 시키고 있기 때문에 정확한 물 수요 예측이 필요한 실정이다. 따라서 본 연구에서는 한반도 중서부에 위치한 안성천을 대상으로 준 분포 강우-유출 모형인 SLURP모형에 기후변화 RCP8.5 시나리오를 적용하여 기후변화에 따른 안성천의 유출량을 산정하였다. 정확한 물 수요 예측을 위해 K-Weap(통합수자원평가계획모형)모형을 통해 유역별 네트워크 및 시나리오를 구성하고, 용수이용량(생활, 공업, 농업)의 과거자료를 선형예측함수식을 통해 장래 추정량을 생성 하였다. 이처럼 세분화된 자료를 통한 물 수지 분석 결과, 안성천 유역은 인구 증가, 급격한 도시화로 인한 용수 이용량 증가 그리고 기후변화에 따른 지구온난화로 인해 농업용수는 점차적으로 물 부족이 감소하고 있지만, 생활, 공업용수 이용량에 대한 물 부족량이 증가하고 있는 것으로 확인되었다. 본 연구에서는 물 부족을 해소할 수 있는 방안을 제시하고자 2가지의 대안을 구성해보았으며, 먼 미래의 물 부족시대에 대비할 수 있는 기초적인 자료로 활용될 것으로 기대된다.

• Journal of Convergence for Information Technology
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• v.10 no.4
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• pp.18-24
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• 2020

Recently, research on Society 5.0 has been actively carried out in Japan. The Society 5.0 is used in various areas using IoT sensors. This paper proposes a privacy approach model of multiple approaches to IoT users based on Society 5.0. The proposed model used multiple methods of synchronizing important information of IoT devices with one another in the virtual environment. The proposed model improved the efficiency of IoT information by accumulating the weight of IoT information on a probability-based basis. Further, it improves the accuracy of IoT information by segmenting it so that attribute information is linked to IoT information. As a result of the performance evaluation, the efficiency of IoT devices has improved by an average of 5.6 percent, depending on the number of IoT devices and the number of IoT hub devices. Accuracy has improved by an average of 15.9% depending on information collection and processing.

• Journal of Energy Engineering
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• v.15 no.3 s.47
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• pp.188-193
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• 2006

This paper intends to present theoretical study and its application result of the way of the temperature distribution embodiment through the production of subdivided nod's temperature from the average, maximum and minimum temperature following acoustic speed measurement with a set of acoustic speed meters at the arbitrary section in the furnace. By measuring the acoustic speed between the speed meters, flue gas temperature field can be determined. Then Subdivided arbitrary grid's temperatures can be infered out of surrounding nod's temperature distribution, and finally the entire grid's temperature distribution will be found. In this article, theoretical background, related system setup. and real application result are examined and discussed.

• Journal of Intelligence and Information Systems
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• v.12 no.1
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• pp.33-41
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• 2006

This paper presents a method that automatically recognizes products into model type, which it flows with the conveyor belt. The specific interlaced image are occurred by moving image when we use the NTSC based camera. It is impossible to process interlaced images, so a suitable post-processing is required. For the purpose of this processing, after it remove interlaced images using de-interlacing method, it leads rectangle region of object by thresholding. And then, after rectangle region is separated into several blocks through edge detection, we calculate pixel numbers per each block, re-classify using its average, and classify products into model type. Through experiments, we know that the proposed method represent high classification ratio.