• Title/Summary/Keyword: 중심점 추출

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A Study on the Mapping of Fishing Activity using V-Pass Data - Focusing on the Southeast Sea of Korea - (선박패스(V-Pass) 자료를 활용한 어업활동 지도 제작 연구 - 남해동부해역을 중심으로 -)

  • HAN, Jae-Rim;KIM, Tae-Hoon;CHOI, Eun Yeong;CHOI, Hyun-Woo
    • Journal of the Korean Association of Geographic Information Studies
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    • v.24 no.1
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    • pp.112-125
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    • 2021
  • Marine spatial planning(MSP) designates the marine as nine kinds of use zones for the systematic and rational management of marine spaces. One of them is the fishery protection zone, which is necessary for the sustainable production of fishery products, including the protection and fosterage of fishing activities. This study intends to quantitatively identify the fishing activity space, one of the elements necessary for the designation of fisheries protection zones, by mapping of fishery activities using V-Pass data and deriving the fishery activity concentrated zone. To this end, pre-processing of V-Pass data was performed, such as constructing a dataset that combines static and dynamic information, calculating the speed of fishing vessels, extracting fishing activity points, and removing data in non-fishing activity zone. Finally, using the selected V-Pass point data, a fishery activity map was made by kernel density estimation, and the concentrated space of fishery activity was analyzed. In addition, it was confirmed that there is a difference in the spatial distribution of fishing activities according to the type of fishing vessel and the season. The pre-processing technique of large volume V-Pass data and the mapping method of fishing activities performed through this study are expected to contribute to the study of spatial characteristics evaluation of fishing activities in the future.

Locational Characteristics of Cafes in Jeju Island and the Changes: Offline and Online Influences (제주도 카페 입지의 특성과 변화: 오프라인과 온라인의 영향)

  • Ham, Yuhee;Park, Sohyun;Lee, Keumsook
    • Journal of the Economic Geographical Society of Korea
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    • v.25 no.1
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    • pp.131-146
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    • 2022
  • The purpose of this study is to examine the locational characteristics of cafes in Jeju Island and the changes. For the purpose, we identify the spatial distribution patterns of openings and closings by period from the first opening of cafes in Jeju Island to the present. In particular, we analyze the spatial distribution characteristics found in the locations of cafes that have been opened and closed after the outbreak of COVID-19, in which new stores have significantly increased. In addition, we identify the regional attributes and the influence of online that have affected the distribution of currently open cafes and cafes that have opened or closed during the COVID-19 outbreak. As a result of empirical analysis, Jeju Island is a tourist destination and island region with the characteristics of determining major destinations through information search, showing a different distribution form from the location of cafes in inland cities. In particular, as a result of frequency analysis by extracting keyword search volume for cafes in Jeju Island, online accessibility such as information search for new areas and places in Jeju Island has become more diversified and expanded after COVID-19. In addition, as a result of calculating the distance to cafes by road size, the relationship between physical location and road accessibility, which has traditionally been an important factor, was relatively low. This study is meaningful in that it revealed the distribution patterns and characteristics of cafe locations in Jeju Island by reflecting the influence of online and offline.

Development and Application of MEA(Model-Eliciting Activities) Program Applying the Invention Technique(TRIZ): Focus on Students' Conceptual Change (발명기법(TRIZ)을 적용한 MEA(Model-Eliciting Activities) 프로그램 개발 및 적용 -학생들의 개념 변화를 중심으로-)

  • Kang, Eunju
    • Journal of The Korean Association For Science Education
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    • v.42 no.1
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    • pp.161-176
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    • 2022
  • This study developed an MEA program to which the invention technique was applied and analyzed the conceptual change of students. The MEA activity applying the invention technique (TRIZ) was composed of the topic of making a paper electric circuit in the section 'Using electricity' presented in the 6th grade textbook. As a way to materialize ideas for problem solving, among the TRIZ techniques, division, integration, multi-purpose, overlapping, subtraction, and converse techniques were extracted and applied. The devised program consists of examining invention techniques (1st session), problem-solving (2nd and 3rd sessions), and expressing the problem-solving process (4th session). As a result of applying to 6th grade elementary school students, it was confirmed that the scientific concept of the experimental group participating in the MEA class to which the invention technique was applied was improved compared to the control group participating in the general class. As a result of calculating the scientific concept improvement index, the control group showed a low educational effect of 0.15, and the experimental group showed an intermediate educational effect of 0.69. This study is meaningful in that it suggests a specific way to graft invention education into science subjects.

Experience of Pre-service Science Teachers in Designing and Implementing Education for Sustainable Development (ESD) on Climate Crisis Topics: Focusing on the Application of Reciprocal Peer Teaching (기후위기 주제 지속가능발전교육 수업 설계와 실행에 있어서 예비과학교사들이 갖는 경험 분석: 상호동료교수법 적용을 중심으로)

  • Son, Yeon-A
    • Journal of the Korean Society of Earth Science Education
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    • v.14 no.3
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    • pp.277-291
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    • 2021
  • This study is to implicate for analyzing the expertise of Education for Sustainable Development (ESD) dealing with science-related social issues by reorganizing educational materials on climate crisis topics and analyzing in-depth class performance preparation and actual class by pre-service science teachers. As a result of the study, it was found that pre-service science teachers have the expertise to analyze the curriculum horizontally and extract subject-integrated elements, but it is difficult to perform convergent science classes by incorporating them into the social problem-solving process in actual classes. In addition, it was analyzed that through this study, pre-service science teachers came to think about the importance of having their own specialized expertise when they become school teachers through preparation for their classes integrating science-related social issues. Through the application of the reciprocal peer teaching applied in this study, giving pre-service science teachers of various expertise an opportunity to experience the process of designing and implementing integrated science classes while sharing their expertise will greatly help them improve their convergence education.

A Comparative Study on New Words of Korean and Chinese According to Changes in Popular Culture Contents (대중문화 콘텐츠 변화에 따른 한중 신조어 비교 연구)

  • Meng, Xiang-Shan;Lee, Kwang-Ho
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.6
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    • pp.125-137
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    • 2020
  • The purpose of this study is to analyze new words in Korean and Chinese based on changes in popular culture. As China and Korea embrace increasingly close communication in recent years, their languages have influenced each other. A lot of new Korean and Chinese words have been discovered to have the same linguistic characteristics. New words are considered as new developments of a language. They are welcomed and widely used by young people in Korea and China. Therefore, in terms of the communicative function of languages, it is worthwhile to understand new words in Korean and Chinese from the perspective of academic research. This study takes Chinese words created in 2018 as the research object. Firstly, a morphological and semantic comparison of Chinese words created in 2018 and those created in 2017 is carried out to extract the characteristic indicators of Chinese words created in 2018, with emphasis on compound words, abbreviations, substitutions, patters and rhetorical expressions. Secondly, the similarities and differences of these Chinese words with Korean words created in 2018 in terms of morphology are analyzed. Finally, after conducting sample classification and comparison, the characteristics of new Chinese and Korean words and the interaction mechanism under mutual influence are concluded. According to the study, the majority of the new words are created on the basis of existing words. Thus, it is important to explore the morphology of new words as a standard language.

A Study on Design Analysis of Traditional Flower Design in the Joseon Dynasty Period: Focused on Expression Technique (조선시대 전통 화훼장식의 디자인 형태 분석에 관한 연구 - 표현기법을 중심으로 -)

  • Lee, Kyeong Suk;Oh, Wook
    • Journal of the Korean Society of Floral Art and Design
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    • no.45
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    • pp.13-29
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    • 2021
  • Under the recognition that the technological system of traditional flower design in Korea has been passed down from the past to the present, we extracted the type of design form from the flower decoration of the Joseon Dynasty, analyzed the expression technique, and examined the relationship with the modern traditional flower decoration in this study. As a result, most of the flower design works of the Joseon Dynasty mainly expressed one focal point at the central starting point. One central branch line was mainly used, and cut leaves were mainly used as the base material. Similar to the Joseon Dynasty, one central starting point and a base made of leaves are mainly used In modern flower design. In the frequency of use by expression technique, the stem exposure technique was used the most, and cut flowers and cut stems were used at a similar frequency in all techniques. As plant materials, cut flowers and cut stems were mainly used. In addition, non-plant materials such as feathers, fans, and brushes were also used for decoration. In conclusion, it can be seen that traditional flower decorations in Korea were systematically established in the Joseon Dynasty in terms of expression techniques and high-level flower design works were made. In the future, it will be necessary to study the history of our flower designs in more diverse ways and to develop modern flower designs while preserving historical traditions.

Housework and Care in the Era of the 4th Industrial Revolution through Big Data: Changes in the Aspects of Household Service based on the Platform (빅데이터로 살펴본 4차 산업혁명 시대의 가사노동과 돌봄: 플랫폼을 통한 가사서비스 양상 변화)

  • Lee, hyunah;Kwon, Soonbum
    • Journal of Family Resource Management and Policy Review
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    • v.27 no.1
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    • pp.13-24
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    • 2023
  • The 4th industrial revolution came deep into family life and changed the way of housework and care. The change in the family caused by the technological change of the 4th industrial revolution is remarkable in terms of socialization of housework. In this study, the socialization of housework, which is accelerating in the era of the 4th industrial revolution, was examined focusing on the change in the aspect of "household service" through the "platform". Since 2015, when technological changes in the 4th industrial revolution began to decline, related newspaper articles were extracted for daily and economic newspapers nationwide and analyzed big data. The results of big data analysis show that the platform economy using the 4th industrial revolution technology is rapidly spreading the socialization of housework not only at the business level but also at the public policy level. It has been confirmed that support for household services through the platform is growing into a new business area of companies, and at the public policy level, it is being treated as an important policy task in supporting work-family balance or responding to infectious diseases. This study is meaningful in that it provided an opportunity to reflect on the roles and tasks of the family, market, and state for housework and care in the future through changes in housework and care caused by the 4th industrial revolution technology.

Analysis of Research Trends in New Drug Development with Artificial Intelligence Using Text Mining (텍스트 마이닝을 이용한 인공지능 활용 신약 개발 연구 동향 분석)

  • Jae Woo Nam;Young Jun Kim
    • Journal of Life Science
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    • v.33 no.8
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    • pp.663-679
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    • 2023
  • This review analyzes research trends related to new drug development using artificial intelligence from 2010 to 2022. This analysis organized the abstracts of 2,421 studies into a corpus, and words with high frequency and high connection centrality were extracted through preprocessing. The analysis revealed a similar word frequency trend between 2010 and 2019 to that between 2020 and 2022. In terms of the research method, many studies using machine learning were conducted from 2010 to 2020, and since 2021, research using deep learning has been increasing. Through these studies, we investigated the trends in research on artificial intelligence utilization by field and the strengths, problems, and challenges of related research. We found that since 2021, the application of artificial intelligence has been expanding, such as research using artificial intelligence for drug rearrangement, using computers to develop anticancer drugs, and applying artificial intelligence to clinical trials. This article briefly presents the prospects of new drug development research using artificial intelligence. If the reliability and safety of bio and medical data are ensured, and the development of the above artificial intelligence technology continues, it is judged that the direction of new drug development using artificial intelligence will proceed to personalized medicine and precision medicine, so we encourage efforts in that field.

A Study on the Perceived Language and Non-verbal Communication and Lapport and Customer Satisfaction of Hospital Users : Focused on the Control Effect of Service Authenticity (병원이용객이 지각한 언어·비언어커뮤니케이션과 라포, 고객만족에 관한 연구 : 서비스진정성 조절효과를 중심으로)

  • Do-Hee Kim;Jeong-won Lee
    • Journal of Service Research and Studies
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    • v.12 no.4
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    • pp.19-29
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    • 2022
  • This study is a descriptive survey using a self-reported survey method to understand the effect of language and non-verbal communication of medical service providers on customer satisfaction through Lapport and to determine the degree of impact on Lapport by adjusting perceived service authenticity. The data collection period was from April 5 to April 30, 2021. Using the convenience sampling method, data were collected from users of medical institutions located in Busan and Gyeongsangnam-do, and a total of 306 valid questionnaires were used as statistical analysis data. The collected data were analyzed using the IBM SPSS statistics version 25.0 and AMOS 20.0 programs through a coding process. In the results of this study, it was found that the language and non-verbal communication of medical service providers influenced customer satisfaction through Lapport, and the perceived service authenticity in the relationship between each variable acts as a moderating effect. Considering that the language and non-verbal factors of the medical service provider are important in the interaction between the medical service provider and the hospital user, the medical service provider should take full account of the language and non-verbal factors and help the medical institution communicate with the hospital user.

The Effect of Social Relationship Satisfaction on Subjective Happiness of Middle-Aged Single-Person Households in Low-Income Families: Focusing on the Mediating Effect of Depression and Gender Differences (저소득층 중·장년 1인 가구의 사회적 관계 만족도가 주관적 행복감에 미치는 영향: 우울감의 매개효과 및 성별 차이를 중심으로)

  • Su-Yeol Yoo;Ouk-Sun Cho
    • Journal of Industrial Convergence
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    • v.21 no.9
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    • pp.77-87
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    • 2023
  • The purpose of this study was to examine the effect of social relations satisfaction of low-income middle-aged and elderly single-person households on individual subjective happiness and to verify the mediating effect of depression and gender control to provide basic data for the development of related policies and programs. The SPSS WIN 25.0 program used frequency analysis, technical statistics analysis, correlation analysis, and PROCESS MACRO Model Number 4 to verify the mediating effect of 482 middle-aged singleperson households extracted using the "17th Korea Welfare Panel in 2022" survey data. In addition, the control effect was verified using PROCESS MACRO Model Number 1. The results of the study first showed that social relationship satisfaction after controlling demographic characteristics had a positive effect on subjective happiness. Second, it was found that depression had a partial mediating effect in the relationship between social relationship satisfaction and subjective happiness. Third, it was found that the higher the satisfaction level of social relationships among women than men, the greater the sense of happiness. Through this study, it is meaningful in that it identified the meaning of social relationships of middle-aged and elderly single-person households and presented practical implications so that they can be used as basic data for policy support measures.