• 대한원격탐사학회지
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• 제36권1호
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• pp.67-81
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• 2020

The rapid climatic changes being caused by global warming are resulting in abnormal weather conditions worldwide, which in some regions have increased the frequency of landslides. This study was aimed to analyze and compare the landslide susceptibility using the Frequency Ratio (FR), Statistical Index, Weight of Evidence, Certainty Factor, and Index of Entropy (IoE) at Woomyeon Mountain in South Korea. Through the construction of a landslide inventory map, 164 landslide locations in total were found, of which 50 (30%) were reserved to validate the model after 114 (70%) had been chosen at random for model training. The sixteen landslide conditioning factors related to topography, hydrology, pedology, and forestry factors were considered. The results were evaluated and compared using relative operating characteristic curve and the statistical indexes. From the analysis, it was shown that the FR and IoE models were better than the other models. The FR model, with a prediction rate of 0.805, performed slightly better than the IoE model with a prediction rate of 0.798. These models had the same sensitivity values of 0.940. The IoE model gave a specific value of 0.329 and an accuracy value of 0.710, which outperforms the FR model which gave 0.276 and 0.680, respectively, to predict the spatial landslide in the study area. The generated landslide susceptibility maps can be useful for disaster and land use planning.

• 한국철도학회논문집
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• 제12권4호
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• pp.443-449
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• 2009

국가에서는 철도운영 및 시설기관에 산재되어 있는 철도안전정보를 수집하여 분석할 수 있는 철도안전정보 종합관리시스템을 구축하야 철도안전관리를 효율적으로 수행하기 위하여 노력하고 있다. 매년 철도안전도를 평가하기 위하여 철도사고 자료를 분석하여 사망자 및 부상자 수를 산출하고 있으며 사고 원인 및 위험발생 경위를 규명하여 사고를 최소화 할 수 있도록 여러 안잔정책 및 안전관리방안을 시행하고 있다. 따라서 보다 선진적인 안전정책 수립 및 안전관리를 위해 철도안전도를 입체적으로 그리고 정량적으로 표현할 수 있는 방안이 필요하며 이를 위해서는 안전에 대한 주요 영향요소가 무엇인지를 파악해야 하며 선정된 개발적 요소들에 대한 정량적 철도안전지수(Railway Safety Index)를 개발해야 한다. 본 연구에서는 철도안전도를 정량적으로 평가할 수 있는 안전도 평가지표를 개발하여 안전목표 수립 및 관리 등 철도안전향상를 위한 전략적 방향 및 정책수립 과정에서 활용할 수 있는 모델을 제공하고자 한다.

• 한국재난정보학회 논문집
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• 제16권4호
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• pp.682-690
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• 2020

연구목적: 본 연구는 재난 발생 데이터와 실시간 기상·대기 관련 데이터를 수집하고 정제과정을 통하여 데이터베이스를 구축하고, API로 제공되는 공공 데이터와 연계하여 빅 데이터 기반의 도시안전지수의 서비스 모델을 제안하고자 한다. 연구방법: 재난 발생과 관련한 다양한 정보를 공공 데이터와 SNS를 활용하여 수집하고, 기계학습 알고리즘으로 분석한 결과를 중심으로 이용자 관심지역의 재난상황을 실시간 대시보드로 확인하고 대처하는 방법을 제공하고자 한다. 연구결과: 분야별 지역안전지수와 기상·대기의 상관관계가 높은 속성을 추출하여 예측모델과 비교하면 교통사고 분야의 지역안전지수는 기상·대기 데이터와 상당한 상관관계가 있음을 확인하였다. 결론: 기계학습 알고리즘 기반의 안전지수 예측모델을 생성하여 이용자 관심 지역에 분야별 안전지수를 지도에 표시하는 시스템을 제안하였다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 추계학술대회논문집
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• pp.784-787
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• 2003

Electrorheological(ER) and magnetorheological(MR) fluid-based dampers are typically analyzed using Bingham-plastic shear model under quasi-steady fully developed flow conditions. A Herschel-Bulkley constitutive shear flow relationship is that the linear shear stress vs. strain rate behavior of Bingham model is replaced by a shear stress that is assumed to be proportional to a power law of shear rate. This power is called the flow behavior index. Depending on the value of the flow behavior index number, varying degrees of post-yield shear thickening or thinning behavior can be analyzed. But it is not practical to analyze the damping force in a flow mode damper using Herschel-Bulkley model because it is needed to solve a polynomial equation. A useful guide is suggested to analyze the damping force in a damper using the Herschel-Bulkley model.

• 한국멀티미디어학회논문지
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• 제19권8호
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• pp.1574-1586
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• 2016

The aims of this research is to build Customer Delight index contents model for measuring the influential factors - Customer Delight and identify the relationship among Customer Delight, Customer Satisfaction and Customer Loyalty. Customer Delight hypothesis model was proposed by Catering Service Industry of Starbucks and validate the final questionnaire; 7 point Likert scale was used in the questionnaire, Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) are used to analyze the reliability. And path analysis was used to evaluating the final hypothesis model. The results of this research was that the customer Self-involvement can lead to high awakening level and it also bring positive emotion to the customer. Awakening Level and positive emotion were the key factors for the Customer Delight. Instead of customer expectation, Customer Delight is based on customer awakening level and positive emotion which is different from Customer Satisfaction model. It is clearly to see the discrepancies between Customer Delight and Customer Satisfaction.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 봄 학술발표논문집 Vol.29 No.1 (B)
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• pp.238-240
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• 2002

If there is an Information Retrieval system which comprehends the semantic content of documents and knows the preference of users. the system can search the information better on the Internet, or improve the IR performance. Therefore we propose the IR model which combines semantic based indexing and fuzzy relevance model. In addition to the statistical approach, we chose the semantic approach in indexing, lexical chains, because we assume it would improve the performance of the index term extraction. Furthermore, we combined the semantic based indexing with the fuzzy model, which finds out the exact relevance of the user preference and index terms. The proposed system works as follows: First, the presented system indexes documents by the efficient index term extraction method using lexical chains. And then, if a user tends to retrieve the information from the indexed document collection, the extended IR model calculates and ranks the relevance of user query. user preference and index terms by some metrics. When we experimented each module, semantic based indexing and extended fuzzy model. it gave noticeable results. The combination of these modules is expected to improve the information retrieval performance.

• 품질경영학회지
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• 제44권2호
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• pp.277-296
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• 2016

Purpose: Propose model to diagnose and assess National Defense Industry and quality management by investigating and analyzing established standard model. Methods: Research on established internal model including MB, EQA and JQA model and make standard index for quality index extraction and quantitative index to test objectively for internal state. Results: Extract advantage and disadvantage by performance of National Defense Industry level diagnose and build foundation for quality management policy and road map. Conclusion: Due to result of diagnostic assesment of quality management of national defense industry, dependability, SCQM and safety part shows vulnerability and require improvement and support.

• Child Health Nursing Research
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• 제26권1호
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• pp.35-46
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• 2020

Purpose: The purpose of this study was to test a model for intention to discontinuation drinking high caffeinated beverages among undergraduate students. This model was based on the Ajzen's theory of planned behavior and Becker's health belief model. Methods: Participants consisted of 201 undergraduate students. Data were collected by questionnaires from March 11 to May 24, 2019. Collected data were analyzed using SPSS/WIN 22.0, AMOS 22.0 program. Results: The assessment of the model indicated an acceptable fit (normed x²=1.65, goodness-of-fit index [GFI]=.83, adjusted GFI=.79, comparative fit index [CFI]=.92, standardized root mean square residual [SRMR]=.05, Tucker-Lewis index [TLI]=.91, normed fit index [NFI]=.87, root mean square error of approximation [RMSEA]=.07). Perceived behavior control, subjective norm, the subjective attitude was found to have a significant direct effect on the intention to discontinuation of drinking a high caffeinated beverage. The variances of this model explained 45.3% of the variance in intention to discontinuation of drinking a high caffeinated beverage. Conclusion: These results suggest that a need to increase awareness of adverse effects and potential risks of high caffeinated beverage consumption in undergraduate students. Besides, the university and government should provide education and campaigns to prevent excessive high-caffeinated beverage consumption.

• 정보처리학회논문지D
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• 제8D권5호
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• pp.451-460
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• 2001

본 논문에서는 XML 문서의 효율적인 구조 검색을 위한 색인 모델을 제안한다. 색이 모델은 문선 계층상의 모든 레벨에서 내용 기반 질의와 구조 및 에트리뷰트 질의와 같은 다양한 질의를 지원하기 위한 구조정보와 이를 이용한 색이 구조로 구성된다. 구조검색을 지원하기 위해 새로운 구조정보 표현 방법을 제안한다. 제안한 구조정보 표현 방법에 따라 표현된 구조정보를 이용해 효율적인 검색을 위한 내용 색인, 구조 색인, 에트리뷰트 색인을 구성한다. 또한 내용과 구조가 혼합된 질의의 처리과정을 설명하고, 제안하는 색인 모델의 성능평가를 보임으로써 기존의 방법보다 성능이 우수함을 보인다.

• 한국조경학회지
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• 제23권1호
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• pp.95-109
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• 1995

All human spatial behavior and psychological stress are affected by the 'Privacy'of each space. This Paper deals with the theoretical review of 'privacy'concept and establishment of 'Privacy Model' that can be a useful design tool. 'Privacy Index(Pl)' model of 10 point scale, which is based on 'Hierarchic system of Privacy' in urban spaces by Chermeyeff and Alexander(1963), was established as a hypothetical model in this study. And'Activity Suitability', based on each hierarchy of primacy level, was investigated at each site to construct the validity of 'Privacy Model'. Total 67 sites were investigated by on.-site questionnaire in 3 types of outdoor spaces, (Park), (Campus), and (Garden) respectively. The major results are as follows; 1. The P7rivacy level of earth spaces, distributed from to in and . and (Groun Private> spaces are dominant In , spaces are dondnant 2, Privacy level, based on , showed higher privacy level than that of . This means the criteria of each privacy level should be modified for more specific space. The . could be derived from the (Activity Suitability) of each space. 3.The cognition of privacy level. by user group, showed no significant difference in dach group by sex, age, education, and job, respectively.