• Title/Summary/Keyword: model studies

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A Study on forecasting the long-run path of the Korean bioindustry based on the experiences of the U.S. BT and the Korean ICT industries (미국 BT와 한국 ICT 산업 연구를 통한 한국 바이오산업 장기전망에 관한 연구)

  • Moon, Sunung;Kim, Minseong;Jeon, Yongil
    • International Area Studies Review
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    • v.13 no.3
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    • pp.331-359
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    • 2009
  • We forecast the performance of the Korean biotechnology industry by adopting similar development paths taken by the U.S. biotechnology and Korean ICT industries. Our long-term forecasting techniques predict that Korean BT market size will increase from 3.7 billion to 10.8 billion U.S. dollars by year 2030. The pharmaceutical industry, one of major bio-subindustries, is expected to dominate Korean BT market in the long-run. Also, the relative portion of the exports in the Korean BT industry will be larger and thus the export-oriented government policy is required for the long-run growth of the Korean BT industry. Since the Korean ICT industry has already slowed down in the development, Korean BT industry is likely to catch up with ICT industry in the near future.

An Empirical Study on the Korean Trade of International Tourism Services - Focusing on 16 nations including US, Japan and China - (한국 관광교역 현황분석을 위한 실증연구 - 미국·중국·일본 등 16개국을 중심으로 -)

  • Chung, Eun-Kyung;Kim, Chul;Choi, Young Jun
    • International Area Studies Review
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    • v.13 no.3
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    • pp.413-438
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    • 2009
  • Tourism is an attractive field of industry to many countries due to its strong potentials in increasing employment rates as well as improving the national image. The positive effect of the tourism on the national economy and globalization has been recognized in Korea. A multilateral effort has been made in order to develop its tourist industry. Therefore, it is necessary to analyze the patterns of tourism demand in Korea. The present study analyzes and demonstrates the effects of a nation's characteristics on tourism demand. The study model was based on factors that affected tourism demand, especially emphasizing on the economic size, distance, national income, and language differences from the mother country. In particular, this study highlights the effects of economic relations between the countries and their exchange rate on tourism demand. In summary, this thesis demonstrates that actual national and international panel data enhance the credibility of the research and precisely determine factors that have a direct influence on tourism demand. A corresponding strategy of development and products are required as most tourists show the preference in advanced nations.

Accessibility Analysis Method based on Public Facility Attraction Index Using SNS Data (SNS 데이터를 이용한 공공시설 매력도지수에 따른 접근성 분석기법)

  • Lee, Ji Won;Yu, Ki Yun;Kim, Ji Young
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.37 no.1
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    • pp.29-42
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    • 2019
  • In order to expand the qualitative aspects of public facility, this study used SNS data to derive user-oriented preference factors for public facilities and then were quantified in terms of supply side and demand side. To derive preference factor, LDA, one of topic modeling, was used and attraction index was calculated for each facility. In addition we analyzed spatial accessibility to measure the degree of service experience of users by using 2SFCA model. The study area covered public libraries of Seoul, Korea. As a result of study, five topics were extracted as preference factors for the public library: Circumstance, Scale of facility, Cultural program, Parenting, Books and materials. In particular topic of circumstance and parenting were newly derived preference factors unknown in previous studies. As a result of calculating attraction index for each library, the index of Songpa Library, Jungdok Library, and Namsan Library was high. Songpa library has received good evaluation in parenting factor, and Jungdok & Namsan library in circumstance factor. The accessibility of each region seems to better in center of Seoul where public libraries are crowded, but shrinking toward the outskirts. We expect that the proposed method will contribute to user-oriented public facility evaluation and policy decision making.

A Study of New Service Learning in the Age of Increasing Occupational Mobility (직업 이동성증대 시대의 뉴서비스러닝 연구)

  • Kim, Jongyeoul;Kim, Hyunsoo
    • Journal of Service Research and Studies
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    • v.8 no.3
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    • pp.51-62
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    • 2018
  • This study examines several evolutionary and alternative aspects of the system of existing education and suggests a more specific approach to the development of recent education that has evolved to the recent service economy era and a new approach to the human capacity of the World Economic Forum (WEF). We propose a stage of education system. We will change the meaning and choice of the job according to the rapid development of the 4th Industrial Revolution. Future occupational education also needs to be changed according to the expectation that job movement will happen frequently. The new education requires a model to prepare for the phenomenon of various convergence as technology collapses with the existing culture. And a higher-level educational philosophy is needed for human competence and the environment to actually connect industrial and social issues. The purpose of this study is to show the necessity of introduction of New Service Learning as a new system of education for super mobility. New Service Learning can be divided into five concepts: Innovation, Modernity, Sustainability, Humanity, and Technology. In future research, it is necessary to complement the research by empirically analyzing the concept of New Service Learning.

The Effects of Fairness and Service Quality on the Loyalty in the R&D Processes: Mediation Effect of Trust (연구개발 과정에서 공정성과 서비스 품질이 충성도에 미치는 영향: 신뢰의 매개효과)

  • Jeong, Yonggil;Sohn, Minho
    • Journal of Service Research and Studies
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    • v.8 no.4
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    • pp.77-88
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    • 2018
  • Collaboration works on R&D project have many characteristics in interoranizational relationships. There are many variables on explaining the their relationships. In the previous study, I chose some relevant variables and some hypotheses. Base on service marketing theories and relationship marketing perspective I suggest 5 hypotheses. Independent variables are fairness and quality, and dependent variable is loyalty. And trust are treated as the intervening variable between the independent variables and dependent variable. To test the research model and some hypothesis empirically, I collected the data using the questionnaire. Sample size was 448, it was enough to analyze statistically. Data were analysed using the SPSS and AMOS. In the previous study, H1($fairness{\rightarrow}trust$), H2($quality{\rightarrow}trust$), H5($trust{\rightarrow}loyalty$) were accepted, but H3 and H4 were rejected. The reason H3($fairness{\rightarrow}loyalty$) and H4($quality{\rightarrow}loyalty$) were not accepted might be attributed to the fact that trust was the mediating variable between fairness and loyalty, quality and loyalty. Specific research methodologies and statistical findings from AMOS were referred in the previous study(Jeong 2018). In this study, I suggested some hypotheses on the mediating role trust between fairness and loyalty and service quality and loyalty. Using the PROCESS-macro, I found that trust was the mediating variable between fairness and loyalty as well as service quality and loyalty. This research is the complementary and extended study from previous research.

Wavelet-based Statistical Noise Detection and Emotion Classification Method for Improving Multimodal Emotion Recognition (멀티모달 감정인식률 향상을 위한 웨이블릿 기반의 통계적 잡음 검출 및 감정분류 방법 연구)

  • Yoon, Jun-Han;Kim, Jin-Heon
    • Journal of IKEEE
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    • v.22 no.4
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    • pp.1140-1146
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    • 2018
  • Recently, a methodology for analyzing complex bio-signals using a deep learning model has emerged among studies that recognize human emotions. At this time, the accuracy of emotion classification may be changed depending on the evaluation method and reliability depending on the kind of data to be learned. In the case of biological signals, the reliability of data is determined according to the noise ratio, so that the noise detection method is as important as that. Also, according to the methodology for defining emotions, appropriate emotional evaluation methods will be needed. In this paper, we propose a wavelet -based noise threshold setting algorithm for verifying the reliability of data for multimodal bio-signal data labeled Valence and Arousal and a method for improving the emotion recognition rate by weighting the evaluation data. After extracting the wavelet component of the signal using the wavelet transform, the distortion and kurtosis of the component are obtained, the noise is detected at the threshold calculated by the hampel identifier, and the training data is selected considering the noise ratio of the original signal. In addition, weighting is applied to the overall evaluation of the emotion recognition rate using the euclidean distance from the median value of the Valence-Arousal plane when classifying emotional data. To verify the proposed algorithm, we use ASCERTAIN data set to observe the degree of emotion recognition rate improvement.

The Influence of Corporate Knowledge Management System on Learning Orientation (기업의 지식경영시스템이 학습지향성에 미치는 영향)

  • Choi, Seung-Il;Kim, Dong-Il
    • Journal of Digital Convergence
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    • v.16 no.11
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    • pp.231-236
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    • 2018
  • In order to survive the competition, companies are developing new knowledge, applying and communicating, and accumulating numerous knowledge management activities. Therefore, it is important to establish and operate an effective knowledge management system to introduce and utilize effective knowledge management. So, the purpose of this study is to confirm the relation between the learning orientation of the organization and the knowledge management which are the main results in the knowledge management. In other words, this study investigated how the knowledge management system of a company affects the learning orientation of the corporate members, so as to be a basis for establishing the direction of knowledge management in the future. This study synthesized theory and previous studies, developed hypotheses and research models, and conducted empirical analysis through questionnaire surveys. This study is analyzed that knowledge management system has a positive effect on learning growth will. In addition, it was confirmed that the knowledge management system has a statistically significant relationship with the intention of internal improvement. Therefore, for the successful operation and management of the support management system, maintenance of the system that can focus on the strategic and appropriate learning model of the organization and the role of the organization member is an important variable. The results of this study are expected to provide meaningful guidance not only in the practical field but also in the study of the organization's knowledge management system.

Study on the Effect of Training Data Sampling Strategy on the Accuracy of the Landslide Susceptibility Analysis Using Random Forest Method (Random Forest 기법을 이용한 산사태 취약성 평가 시 훈련 데이터 선택이 결과 정확도에 미치는 영향)

  • Kang, Kyoung-Hee;Park, Hyuck-Jin
    • Economic and Environmental Geology
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    • v.52 no.2
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    • pp.199-212
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    • 2019
  • In the machine learning techniques, the sampling strategy of the training data affects a performance of the prediction model such as generalizing ability as well as prediction accuracy. Especially, in landslide susceptibility analysis, the data sampling procedure is the essential step for setting the training data because the number of non-landslide points is much bigger than the number of landslide points. However, the previous researches did not consider the various sampling methods for the training data. That is, the previous studies selected the training data randomly. Therefore, in this study the authors proposed several different sampling methods and assessed the effect of the sampling strategies of the training data in landslide susceptibility analysis. For that, total six different scenarios were set up based on the sampling strategies of landslide points and non-landslide points. Then Random Forest technique was trained on the basis of six different scenarios and the attribute importance for each input variable was evaluated. Subsequently, the landslide susceptibility maps were produced using the input variables and their attribute importances. In the analysis results, the AUC values of the landslide susceptibility maps, obtained from six different sampling strategies, showed high prediction rates, ranges from 70 % to 80 %. It means that the Random Forest technique shows appropriate predictive performance and the attribute importance for the input variables obtained from Random Forest can be used as the weight of landslide conditioning factors in the susceptibility analysis. In addition, the analysis results obtained using specific sampling strategies for training data show higher prediction accuracy than the analysis results using the previous random sampling method.

The Effects of Entrepreneurs' Perceived Norm and Self-Efficacy on Entrepreneurial Intention : Focusing on the Mediated Effect of Entrepreneurial Resilience (창업가의 지각된 규범과 자기효능감이 창업의도에 미치는 영향 : 창업가적 탄력성의 매개효과를 중심으로)

  • Kim, Wan-Gi;Suh, Sang-Hyuk
    • Journal of Korea Technology Innovation Society
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    • v.21 no.4
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    • pp.1386-1410
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    • 2018
  • Entrepreneurial resilience is one of the core competencies that young entrepreneurs should own. However, compared to its importance, related studies about this topic are rare, especially in Korea. Therefore, this study, for empirical analysis, included resilience to the research model expanding existing research. The purpose of this study is to identify the direct effects of perceived norms of young entrepreneurs, entrepreneurial self-efficacy, and entrepreneurial resilience on entrepreneurial intentions, and to identify the mediated effects between perceived norm, entrepreneurial self-efficacy, and entrepreneurial intention. The data used in this research were collected through questionnaires from 443 potential young entrepreneurs. Our experimental result show that social norm and entrepreneurial self-efficacy were positively related to entrepreneurial resilience. Moreover, personal norm, entrepreneurial self-efficacy, and entrepreneurial resilience were statistically significant on intention of entrepreneurial. As a result of the indirect effect, entrepreneurial resilience mediates the relationship between social norms, entrepreneurial self-efficacy, and entrepreneurial intention. Finally, this research has significant meaning because it shows the importance of entrepreneurial resilience to entrepreneurial intention of young entrepreneurs. However, the limitation of this study relates to the restriction of sample in certain regions and universities.

Development of Korean SPAR(Soil-Plant-Atmosphere-Research) System for Impact Assessment of Climate Changes and Environmental Stress (기후변화 및 환경스트레스 영향평가를 위한 한국형 SPAR(Soil-Plant-Atmosphere-Research) 시스템의 개발)

  • Sang, Wan-Gyu;Kim, Jun-Hwan;Shin, Pyong;Baek, Jae-Kyeong;Lee, Yun-Ho;Cho, Jung-Il;Seo, Myung-Chul
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.21 no.3
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    • pp.187-195
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    • 2019
  • The needs for precise diagnostics and farm management-decision aids have increased to reduce the risk of climate change and environmental stress. Crop simulation models have been widely used to search optimal solutions for effective cultural practices. However, limited knowledge on physiological responses to environmental variation would make it challenging to apply crop simulation models to a wide range of studies. Advanced research facilities would help investigation of plant response to the environment. In the present study, the sunlit controlled environment chambers, known as Korean SPAR (Soil-Plant-Atmosphere-Research) system, was developed by renovating existing SPAR system. The Korean SPAR system controls and monitors major environmental variables including atmospheric carbon dioxide concentration, temperature and soil moisture. Furthermore, plants are allowed to grow under natural sunlight. Key physiological and physical data such as canopy photosynthesis and respiration, canopy water and nutrient use over the whole growth period are also collected automatically. As a case study, it was shown that the Korean SPAR system would be useful for collection of data needed for understanding the growth and developmental processes of a crop, e.g., soybean. In addition, we have demonstrated that the canopy photosynthetic data of the Korean SPAR indicate the precise representation of physiological responses to environment variation. As a result, physical and physiological data obtained from the Korean SPAR are expected to be useful for development of an advanced crop simulation model minimizing errors and confounding factors that usually occur in field experiments.