• Title/Summary/Keyword: Result Analysis and Evaluation

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Bivariate Frequency Analysis of Dam Storage Capacity before and after the Rainy Season and Evaluation on Water Supply Capacity (우기 전후 댐 저수용량에 대한 이변량 빈도해석과 댐의 용수공급능력 평가)

  • Jun, Changhyun;Yoo, Chulsang;Zhu, Ju Hua;Lee, Gwang-Man
    • Journal of Korea Water Resources Association
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    • v.47 no.12
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    • pp.1199-1212
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    • 2014
  • This study proposes an evaluation method of water supply capacity of a dam, which uses the concept of return period by conducting bivariate frequency analysis of dam storage capacity. The proposed method was applied to the Daecheong Dam for the evaluation. Additionally, the return periods of Daecheong Dam were estimated for the representative drought events in Korea, whose results were also reviewed. Summarizing the results is as follows. First, this study evaluated several climatological factors related to the water supply capacity of dams in Korea to conduct the bivariate frequency analysis and selected the storage on May and the storage difference between June and October as variables for analysis. Second, as an evaluation result of the water supply capacity of the Daecheong Dam, it was found that the Daecheong Dam secures the water supply capacity under 20 years of return period. Finally, it was also confirmed that the proposed method in this study is valid to analyze and estimate the return period of representative drought events occurred in the Korean peninsula.

Customized Service Evaluation by Preference Clarity and Customer Participation in Korean and Chinese Culture (한국과 중국문화권 소비자들의 선호명확성과 고객참여수준에 따른 맞춤서비스 평가)

  • Shin, Jong-Kuk;Park, Min-Sook;Ock, Jong-Won
    • Journal of Digital Convergence
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    • v.12 no.3
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    • pp.117-126
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    • 2014
  • This study examines how preference clarity and customer participation levels affect evaluation of fit toward customized services and also analyzes the effects of cultural difference between Korea and China that may cause variance in the evaluation of fit in the course of interaction with the prior two factors, preference clarity and customer participation level. It conducted a $2{\times}2{\times}2$ between-subjects factorial design adopting preference clarity, customer participation level, and difference of culture. The subjects were composed of 200 Korean and 200 Chinese. According to the analysis results, it is revealed that Korean consumers highly perceived fit toward customized services when their preference is clear and participation level is high, and they evaluate fit more favorably as participation level increased, while Chinese consumers' evaluation for fit deteriorated as participation level increased. The result shows that fit evaluation became more positive through participation when preference clarity is high in Koreans but not in Chinese.

Mediating Effect of Community Child Center Service Experience on the Relationship between Peer Attachment and School Adjustment (또래애착이 학교적응에 미치는 영향에서 지역아동센터 이용 경험의 매개효과)

  • Kim, Yookyung
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.4
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    • pp.1-9
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    • 2019
  • The purpose of this study was to examine the mediating effect of community child center service experience on the relationship between peer attachment and school adjustment. For the analysis, data from the 2nd Panel of Community Child Center(2017) were used. Frequency analysis, reliability analysis, correlation analysis, and multiple regression analysis were conducted using IBM SPSS Statistics 20 program. As a result, peer attachment(peer trust) has a positive effect on their center experience and school adjustment, and the center experience has a partial mediating effect on the relationship between peer attachment and school adjustment. The relationship with a center teacher and the center service evaluation of the children who use community child center are important factors that affect their school adjustment. Therefore measures should be taken to improve the quality of the community child center programs and its teachers.

Validity and Reliability for the Use of Program Outcome Indirect Measurement Tool in Korean Nursing Baccalaureate Education (간호교육 프로그램 학습성과 간접측정도구의 활용을 위한 신뢰도 및 타당도 검증)

  • Song, Mi Ok;Kim, Heeyoung
    • The Journal of the Korea Contents Association
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    • v.21 no.8
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    • pp.608-618
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    • 2021
  • The aim of this study was to verify the feasibility and reliability of the program outcome indirect measurement tool developed for nursing college students in Korean. 396 nursing students from 5 nursing colleges participated in this study, data were collected from November 22 to December 10, 2019. Data analysis was conducted using the IBM Statistics SPSS 21.0 and AMOS 21.0 programs to analyze item analysis, exploratory and confirmatory factor analysis. As a result of the item analysis, all 79 items were selected for factor analysis. In the exploratory factor analysis, five items that were loaded with other factors were deleted. The final factor loading range was from .37 to .86, and the cumulative explanatory variance for 12 factors was 71.71%. No items were deleted as a result of the confirmatory factor analysis, and the final scale was consisted of 74 items. The average score for scale was 3.78 and Cronbach' α was .98. The feasibility and reliability of the program outcome indirect measurement tool have been verified through this study. Therefore it can be used as a more standardized indirect measurement tool for nursing college students.

An Efficient Estimation of Place Brand Image Power Based on Text Mining Technology (텍스트마이닝 기반의 효율적인 장소 브랜드 이미지 강도 측정 방법)

  • Choi, Sukjae;Jeon, Jongshik;Subrata, Biswas;Kwon, Ohbyung
    • Journal of Intelligence and Information Systems
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    • v.21 no.2
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    • pp.113-129
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    • 2015
  • Location branding is a very important income making activity, by giving special meanings to a specific location while producing identity and communal value which are based around the understanding of a place's location branding concept methodology. Many other areas, such as marketing, architecture, and city construction, exert an influence creating an impressive brand image. A place brand which shows great recognition to both native people of S. Korea and foreigners creates significant economic effects. There has been research on creating a strategically and detailed place brand image, and the representative research has been carried out by Anholt who surveyed two million people from 50 different countries. However, the investigation, including survey research, required a great deal of effort from the workforce and required significant expense. As a result, there is a need to make more affordable, objective and effective research methods. The purpose of this paper is to find a way to measure the intensity of the image of the brand objective and at a low cost through text mining purposes. The proposed method extracts the keyword and the factors constructing the location brand image from the related web documents. In this way, we can measure the brand image intensity of the specific location. The performance of the proposed methodology was verified through comparison with Anholt's 50 city image consistency index ranking around the world. Four methods are applied to the test. First, RNADOM method artificially ranks the cities included in the experiment. HUMAN method firstly makes a questionnaire and selects 9 volunteers who are well acquainted with brand management and at the same time cities to evaluate. Then they are requested to rank the cities and compared with the Anholt's evaluation results. TM method applies the proposed method to evaluate the cities with all evaluation criteria. TM-LEARN, which is the extended method of TM, selects significant evaluation items from the items in every criterion. Then the method evaluates the cities with all selected evaluation criteria. RMSE is used to as a metric to compare the evaluation results. Experimental results suggested by this paper's methodology are as follows: Firstly, compared to the evaluation method that targets ordinary people, this method appeared to be more accurate. Secondly, compared to the traditional survey method, the time and the cost are much less because in this research we used automated means. Thirdly, this proposed methodology is very timely because it can be evaluated from time to time. Fourthly, compared to Anholt's method which evaluated only for an already specified city, this proposed methodology is applicable to any location. Finally, this proposed methodology has a relatively high objectivity because our research was conducted based on open source data. As a result, our city image evaluation text mining approach has found validity in terms of accuracy, cost-effectiveness, timeliness, scalability, and reliability. The proposed method provides managers with clear guidelines regarding brand management in public and private sectors. As public sectors such as local officers, the proposed method could be used to formulate strategies and enhance the image of their places in an efficient manner. Rather than conducting heavy questionnaires, the local officers could monitor the current place image very shortly a priori, than may make decisions to go over the formal place image test only if the evaluation results from the proposed method are not ordinary no matter what the results indicate opportunity or threat to the place. Moreover, with co-using the morphological analysis, extracting meaningful facets of place brand from text, sentiment analysis and more with the proposed method, marketing strategy planners or civil engineering professionals may obtain deeper and more abundant insights for better place rand images. In the future, a prototype system will be implemented to show the feasibility of the idea proposed in this paper.

Effects of Anchors' Reputation and Brand Equity Evaluation of TV News Program on the Continuous Watching Intention : Focusing on KBS, JTBC, YTN TV News (TV 뉴스 프로그램의 앵커 평판과 브랜드 자산 평가가 지속적 시청 의도에 미치는 영향 : KBS, JTBC, YTN 뉴스를 중심으로)

  • Ha, Dong-Keun;Ahn, Seo-Jin
    • The Journal of the Korea Contents Association
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    • v.18 no.9
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    • pp.91-101
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    • 2018
  • This research verified the effects of anchors' reputation and brand equity evaluation of news on the continuous watching intention for general news channels such as KBS, JTBC, and YTN. Data collection was conducted on nationwide 539 adults who were watching news for each channel, and Hierarchical regression analysis was conducted to analyze the impact of the anchors' reputation and news brand equity evaluation factors. As a result, first, KBS showed continuous watching intention as viewers are men, their academic background is lower, they are more conservative, viewing frequency is higher, anchor awareness is higher, and news awareness and news preference are higher. Second, JTBC showed continuous watching intention as viewers are more advancing, viewing frequency is higher, anchor confidence, news awareness, and news preference, and evaluation on news quality are higher. Third, YTN showed continuous watching intention as their viewing frequency is higher, anchor confidence and anchor attraction are higher, news preference and evaluation on news quality are higher.

Vibration Serviceability Evaluation of Prestressed Concrete Girder Bridge (공용중인 PSC 거더 교량의 진동사용성 평가)

  • Park, Sun-Joon;Kang, Sung-Hoo;Kim, Bo-Hwoan;Kim, Seung
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2009.10a
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    • pp.781-786
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    • 2009
  • The thesis shows that we gauged vibration of vehicular load regarding WPC girder bridge and researched into dynamic characteristics(natural frequency, vibration acceleration) of WPC girder bridge. By the basic of that, we researched on vibration serviceability by looking over and being compared to vibration criteria we had before. In the thesis, the gauged vibration made an analysis of vertical acceleration through FFT method and evaluated vibration serviceability about vibration sense the body feels by means of the standard of ISO assessment standard and Meister assessment standard by referring to analysis data. This research on bridge is WPC girder bridge of 90m span, width of 5.5m, and the experiment was gauged by a fluent which is right way and inverse way about dump truck of gross 270kN. Acceleration was located in the middle of 1st span, 2nd span, 3rd span. As a result of appraisal standard of Meister, the vibrations of the bridge have distributed between "Level C, Strongly Perceptible" and "Level B, Disturbing". Also the vibration can be attacked with unpleasant feeling. As a result of appraisal standard of ISO, from vibration influence didn't come to 60s, and reduced comfort boundary in part of most rigorous standard that such a case didn't happen.

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Vibration Serviceability Evaluation of Prestressed Concrete Girder Bridge (공용중인 PSC 거더 교량의 진동사용성 평가)

  • Kang, Sung-Hoo;Kim, Bo-Hwoan;Park, Sun-Joon;Kim, Seung
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.4
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    • pp.331-337
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    • 2010
  • The thesis shows that we gauged vibration of vehicular load regarding WPC girder bridge and researched into dynamic characteristics(natural frequency, vibration acceleration) of WPC girder bridge. By the basic of that, we researched on vibration serviceability by looking over and being compared to vibration criteria we had before. In the thesis, the gauged vibration made an analysis of vertical acceleration through FFT method and evaluated vibration serviceability about vibration sense the body feels by means of the standard of ISO assessment standard and Meister assessment standard by referring to analysis data. This research on bridge is WPC girder bridge of 90 m span, width of 5.5 m, and the experiment was gauged by a fluent which is right way and inverse way about dump truck of gross 270 kN. Acceleration was located in the middle of 1st span, 2nd span, 3rd span. As a result of appraisal standard of Meister, the vibrations of the bridge have distributed between "level C, strongly perceptible" and "level B, disturbing". Also the vibration can be attacked with unpleasant feeling. As a result of appraisal standard of ISO, from vibration influence didn't come to 60s, and reduced comfort boundary in part of most rigorous standard that such a case didn't happen.

Evaluation on Risk at the Port of Mokpo and its Approaches based on Relative Importance of Risk Factors for Marine Traffic Environment (해상교통환경 위험요소의 상대적 중요도를 고려한 목포항 및 진입수로의 위험도 평가)

  • Lee, Hong-Hoon;Kim, Chol-Seong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.19 no.4
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    • pp.375-381
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    • 2013
  • To assess the risk of marine traffic environments, with high confidential level, the risk factors comprising it should be identified and the risk acceptance criteria should be also provided. Furthermore, the relative importance of each risk factor(the weight of each risk factor on total risk) should be analyzed because the risk is expressed as the sum of risk factors comprising it. The twenty kinds of risk factors and its assessment criteria were suggested for the domestic marine traffic environments by an examination of the existing risk assessment models on the previous studies. The relative importance of each risk factor was also analyzed through the questionnaire using analytic hierarchy process by the marine traffic experts on the same studies. Based on these previous studies, the risk was evaluated at the port of Mokpo and its approaches on this study. The port of Mokpo and its approaches were divided into four sectors for the comparative evaluation, the result of the comparative evaluation on four sectors showed that the risk of the Jeongdeung-hae passage is the highest due to higher risk level of some risk factors(water movements, complexities, tug boats, pilotage, VTS) than the other sectors. The result of this evaluation is in accord with the analysis results of the other studies using various qualitative or quantitative risk analysis methods at the same sea areas.

Development of the Efficiency-Evaluation Model for the Mechanism of CO2 Sequestration in a Deep Saline Aquifer (심부 대염수층 CO2 격리 메커니즘에 관한 효율성 평가 모델 개발)

  • Kim, Jung-Gyun;Lee, Young-Soo;Lee, Jeong-Hwan
    • Journal of the Korean Institute of Gas
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    • v.16 no.6
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    • pp.55-66
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    • 2012
  • The practical way to minimize the greenhouse gas is to reduce the emission of carbon dioxide. For this reason, CCS(Carbon Capture and Storage) technology, which could reduce carbon dioxide emission, has risen as a realistic alternative in recent years. In addition, the researcher is recently working into ways of applying CCS technologies with deep saline aquifer. In this study, the evaluation model on the feasibility of $CO_2$ sequestration in the deep saline aquifer using ANN(Artificial Neural Network) was developed. In order to develop the efficiency-evaluation model, basic model was created in the deep saline aquifer and sensitivity analysis was performed for the aquifer characteristics by utilizing the commercial simulator of GEM. Based on the sensitivity analysis, the factors and ranges affecting $CO_2$ sequestration in the deep saline aquifer were chosen. The result from ANN training scenario were confirmed $CO_2$ sequestration by solubility trapping and residual trapping mechanism. The result from ANN model evaluation indicated there is the increase of correlation coefficient up to 0.99. It has been confirmed that the developed model can be utilized in feasibility of $CO_2$ sequestration at deep saline aquifer.