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Estimation of Rice Heading Date of Paddy Rice from Slanted and Top-view Images Using Deep Learning Classification Model (딥 러닝 분류 모델을 이용한 직하방과 경사각 영상 기반의 벼 출수기 판별)

  • Hyeok-jin Bak;Wan-Gyu Sang;Sungyul Chang;Dongwon Kwon;Woo-jin Im;Ji-hyeon Lee;Nam-jin Chung;Jung-Il Cho
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.25 no.4
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    • pp.337-345
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    • 2023
  • Estimating the rice heading date is one of the most crucial agricultural tasks related to productivity. However, due to abnormal climates around the world, it is becoming increasingly challenging to estimate the rice heading date. Therefore, a more objective classification method for estimating the rice heading date is needed than the existing methods. This study, we aimed to classify the rice heading stage from various images using a CNN classification model. We collected top-view images taken from a drone and a phenotyping tower, as well as slanted-view images captured with a RGB camera. The collected images underwent preprocessing to prepare them as input data for the CNN model. The CNN architectures employed were ResNet50, InceptionV3, and VGG19, which are commonly used in image classification models. The accuracy of the models all showed an accuracy of 0.98 or higher regardless of each architecture and type of image. We also used Grad-CAM to visually check which features of the image the model looked at and classified. Then verified our model accurately measure the rice heading date in paddy fields. The rice heading date was estimated to be approximately one day apart on average in the four paddy fields. This method suggests that the water head can be estimated automatically and quantitatively when estimating the rice heading date from various paddy field monitoring images.

Psycho-Social Determinants of Subjective Well-being and Physical Health of a Retired Elders in Korea: A Longitudinal Study on the occupational classification (은퇴 노인의 주관안녕과 신체건강에 영향을 미치는 요인들: 은퇴전 직종에 따른 종단 연구)

  • Kun-Seok Park
    • Korean Journal of Culture and Social Issue
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    • v.15 no.2
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    • pp.291-318
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    • 2009
  • The purpose of this study was to find out the impact of psycho-social factors (social relationship and personal) as well as illness history and economic status on physical health and subjective well-being among the retired Koreans elderly. Data were collected from 1,315 elders (mean age = 72.70yrs) residing in Seoul and Chuncheon regional area via interviews(Time 1), and them were re-interviewed two year later(Time 2). Multiple regression analyses indicated that the retired elders' illness history, economic status, marital satisfaction, fulfillment of self-esteem need, drinking behavior, positive affectivity, negative affectivity and physical health to predict their subjective well-being at Time 1(R2=.705). The retired elders' economic status, marital satisfaction, positive affectivity, negative affectivity and physical health to predict their subjective well-being at Time 2(R2=.418). The retired elders' illness history, economic status, expectations for one's offspring, drinking behavior and subjective well-being to predict their physical health at Time 1(R2=.364). And the retired elders' illness history, economic status, marital satisfaction, positive affectivity and negative affectivity to predict their physical health at Time 2(R2=.265). In case of retired elderly, suggested for the psycho-social determenants of subjective well-being and physical health by occupational classification. The implications of this study and the suggestions for furture study were discussed.

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Directions for Legislative Improvement for the Creation and Operation of Ecological Parks (생태공원의 조성과 운영 내실화를 위한 법제적 개선 방향)

  • Kim, Ah-Yeon
    • Journal of the Korean Institute of Landscape Architecture
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    • v.52 no.1
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    • pp.71-86
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    • 2024
  • Despite the increasing importance of urban parks' ecological functions in dealing with the climate crisis, ecological parks are not clearly defined in Korea's legal system. Numerous ecological parks created nationwide cannot be systematically designated and managed due to various legal bases and varying management authorities. It is important to clarify the legal status of ecological parks in order to lead the ecological paradigm shift of urban parks and to improve the natural park system for a comprehensive and integrated approach to protect the national ecosystem. To this end, related laws were analyzed to identify problems and to draw directions for legislative improvement. Through the literature review of relevant laws, acts, and ordinances, six major directions for improvement were suggested based on the analysis of problems. First, the legal status of ecological parks in the administrative dichotomy of the current park system is ambiguous, and ecological parks should be clarified through the revision of park-related laws. Second, an ecological park can be defined as a sustainable park created and managed in an ecological manner, promoting the protection and restoration of the ecosystem, conservation, and promotion of biodiversity, and balancing nature observation, ecological learning, and leisure activities. Third, the role of the state and local governments should be systematically revised to lead to a new park planning and management model through new governance. Fourth, since the characteristics of ecological parks are affected by individual laws, the possibility of overlapping ecological parks for other uses should be allowed. Fifth, detailed guidelines and standard ordinances need to be enacted to meet the goals, principles, and facilities of ecological parks. Lastly, along with the revision of the laws, ordinances by local governments also need to be more concrete. This study, which tracks various legal realities related to ecological parks, can contribute to policymaking that can systematize the foundation for the creation of ecological parks to preserve nationwide ecosystems and provide citizens with opportunities to experience and learn about nature.

Associations between Socioeconomic Factors and Healthy Life Expectancy at Regional Level in Korea (대한민국 지역단위 건강수명과 사회경제적 요인 간의 연관성 분석)

  • Chung-Nyun Kim;Yoon-Sun Jung;Young-Eun Kim;Minsu Ock;Dal-Lae Jin;Seok-Jun Yoon
    • Health Policy and Management
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    • v.34 no.3
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    • pp.261-270
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    • 2024
  • Background: Various researchers are calculating the health adjusted life expectancy (HALE) at the regional level in South Korea using several methods, most studies merely enumerate the differences in healthy life expectancy based on social characteristics. This study aims to analyze the association between various sociodemographic factors and HALE at the regional level. Methods: To calculate HALE, we utilized the various data sources, including National Health Insurance claims data, and applied the Sullivan's method. We conducted multiple linear regression with regional socioeconomic variables from Korean Statistical Information Service. For the multiple linear regression analysis, we designed three regression models. Model 1 comprised solely socioeconomic variables, model 2 involved both socioeconomic variables and individual health behaviors, and model 3 integrated model 2 with healthcare utilization. Results: The analysis shows that an increase in financial independence (p<0.05), population density (p<0.1), and the number of doctors (p<0.05) associated with an increase in HALE, whereas an increase in the number of beds (p<0.01) was associated with a decrease in HALE. In case of the obesity rate, in model 2 (p<0.1) and model 3 (p<0.05), there was a negative association between HALE and obesity rate. Conclusion: Amidst various variables, it was observed that increased financial independence in specific regions had association with an increase in HALE, highlighting the need for stronger local governance in South Korea. Additionally, the inverse association between hospital beds and HALE suggests several implications, such as the appropriate deployment of healthcare resources. To gain a deeper understanding of the relationship between hospital beds and HALE, further analysis distinguishing different types of hospital beds across healthcare institutions seems necessary.

과학자(科學者)의 정보생산(情報生産) 계속성(繼續性)과 정보유통(情報流通)(2)

  • Garvey, W.D.
    • Journal of Information Management
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    • v.6 no.5
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    • pp.131-134
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    • 1973
  • 본고(本稿)시리이즈의 제1보(第一報)에서 우리는 물리(物理), 사회과학(社會科學) 및 공학분야(工學分野)의 12,442명(名)의 과학자(科學者)와 기술자(技術者)에 대한 정보교환활동(情報交換活動)의 78례(例)에 있어서 일반과정(一般過程)과 몇 가지 결과(結果)를 기술(記述)한 바 있다. 4년반(年半) 이상(以上)의 기간(其間)($1966{\sim}1971$)에서 수행(遂行)된 이 연구(硏究)는 현재(現在)의 과학지식(科學知識)의 집성체(集成體)로 과학자(科學者)들이 연구(硏究)를 시작(始作)한 때부터 기록상(記錄上)으로 연구결과(硏究結果)가 취합(聚合)될 때까지 각종(各種) 정형(定形), 비정형(非定形) 매체(媒體)를 통한 유통정보(流通情報)의 전파(傳播)와 동화(同化)에 대한 포괄적(包括的)인 도식(圖式)으로 표시(表示)할 수 있도록 설정(設定)하고 또 시행(施行)되었다. 2보(二報), 3보(三報), 4보(四報)에서는 데이터 뱅크에 수집(蒐集) 및 축적(蓄積)된 데이터의 일반적(一般的)인 기술(記述)을 적시(摘示)하였다. (1) 과학(科學)과 기술(技術)의 정보유통(情報流通)에 있어서 국가적(國家的) 회합(會合)의 역할(役割)(Garvey; 4보(報)) 국가적(國家的) 회합(會合)은 투고(投稿)와 이로 인한 잡지중(雜誌中) 게재간(揭載間)의 상대적(相對的)인 오랜 기간(期間)동안 이러한 연구(硏究)가 공개매체(公開媒體)로 인하여 일시적(一時的)이나마 게재여부(揭載如否)의 불명료성(不明瞭性)을 초래(招來)하기 전(前)에 과학연구(科學硏究)의 초기전파(初期傳播)를 위하여 먼저 행한 주요(主要) 사례(事例)와 마지막의 비정형매체(非定形媒體)의 양자(兩者)를 항상 조직화(組織化)하여 주는 전체적(全體的)인 유통과정(流通過程)에 있어서 명확(明確)하고도 중요(重要)한 기능(機能)을 갖는다는 것을 알 수 있었다. (2) 잡지(雜誌)에 게재(揭載)된 정보(情報)의 생산(生産)과 관련(關聯)되는 정보(情報)의 전파과정(傳播過程)(Garvey; 1보(報)). 이 연구(硏究)를 위해서 우리는 정보유통과정(情報流通過程)을 따라 많은 노력(努力)을 하였는데, 여기서 유통과정(流通過程)의 인상적(印象的)인 면목(面目)은 특별(特別)히 연구(硏究)로부터의 정보(情報)는 잡지(雜誌)에 게재(揭載)되기까지 진정으로는 공개적(公開的)이 못된다는 것과 이러한 사실(事實)은 선진연구(先進硏究)가 자주 시대(時代)에 뒤떨어지게 된다는 것을 발견할 수 있었다. 경험(經驗)이 많은 정보(情報)의 수요자(需要者)는 이러한 폐물화(廢物化)에 매우 민감(敏感)하며 자기(自己) 연구(硏究)에 당면한, 진행중(進行中)이거나 최근(最近) 완성(完成)된 연구(硏究)에 대하여 정보(情報)를 얻기 위한 모든 수단(手段)을 발견(發見)코자 하였다. 예를 들어, 이들은 잡지(雜誌)에 보문(報文)을 발표(發表)하기 전(前)에 발생(發生)하는 정보전파과정(情報傳播過程)을 통하여 유루(遺漏)될지도 모르는 정보(情報)를 얻기 위하여 한 잡지(雜誌)나 2차자료(二次資料) 또는 전형적(典型的)으로 이용(利用)되는 다른 잡지류중(雜誌類中)에서 당해정보(當該情報)가 발견(發見)되기를 기다리지 않는다는 것이다. (3) "정보생산 과학자(情報生産 科學者)"에 의한 정보전파(情報傳播)의 계속성(繼續性)(이 연구(硏究) 시리이즈의 결과(結果)는 본고(本稿)의 주내용(主內容)으로 되어 있다.) 1968/1969년(年)부터 1970/1971년(年)의 이년기간(二年期間)동안 보문(報文)을 낸 과학자(科學者)(1968/1969년(年) 잡지중(雜誌中)에 "질이 높은" 보문(報文)을 발표(發表)한)의 약 2/3는 1968/1969의 보문(報文)과 동일(同一)한 대상영역(對象領域)의 연구(硏究)를 계속(繼續) 수행(遂行)하였다. 그래서 우리는 본연구(本硏究)에 오른 대부분(大部分)의 저자(著者)가 정상적(正常的)인 과학(科學), 즉 연구수행중(硏究遂行中) 의문(疑問)에 대한 완전(完全)한 해답(解答)을 얻게 되는 가장 중요(重要)한 추구(追求)로서 Kuhn(제5보(第5報))에 의하여 기술(技術)된 방법(방법)으로 과학(연구)(科學(硏究))을 실행(實行)하였음을 알았다. 최근(最近)에 연구(硏究)를 마치고 그 결과(結果)를 보문(報文)으로서 발표(發表)한 이들 과학자(科學者)들은 다음 단계(段階)로 해야 할 사항(事項)에 대하여 선행(先行)된 동일견해(同一見解)를 가진 다른 연구자(硏究자)들의 연구(硏究)와 대상(對象)에 밀접(密接)하게 관련(關聯)되고 있다. 이 계속성(繼續性)의 효과(效果)에 대한 지표(指標)는 보문(報文)과 동일(同一)한 영역(領域)에서 연구(硏究)를 계속(繼續)한 저자(著者)들의 약 3/4은 선행(先行) 보문(報文)에 기술(技術)된 연구결과(硏究結果)에서 직접적(直接的)으로 새로운 연구(硏究)가 유도(誘導)되었음을 보고(報告)한 사항(事項)에 반영(反映)되어 있다. 그렇지만 우리들의 데이터는 다음 영역(領域)으로 기대(期待)하지 않은 전환(轉換)을 일으킬 수도 있음을 보여주고 있다. 동일(同一) 대상(對象)에서 연구(硏究)를 속행(續行)하였던 저자(著者)들의 1/5 이상(以上)은 뒤에 새로운 영역(領域)으로 연구(硏究)를 전환(轉換)하였고 또한 이 영역(領域)에서 연구(硏究)를 계속(繼續)하였다. 연구영역(硏究領域)의 이러한 변화(變化)는 연구자(硏究者)의 일반(一般) 정보유통(情報流通) 패턴에 크게 변화(變化)를 보이지는 않는다. 즉 새로운 지적(知的) 문제(問題)에 대한 변화(變化)에서 야기(惹起)되는 패턴에 있어서 저자(著者)들은 오래된 문제(問題)의 방법(方法)과 기술(技術)을 새로운 문제(問題)로 맞추려 한다. 과학사(科學史)의 최근(最近) 해석(解釋)(Hanson: 6보(報))에서 예기(豫期)되었던 바와 같이 정상적(正常的)인 과학(科學)의 계속성(繼續性)은 항상 절대적(絶對的)이 아니며 "과학지식(科學知識)"의 첫발자욱은 예전 연구영역(硏究領域)의 대상(對象)에 관계(關係)없이 나타나는 다른 영역(領域)으로 내딛게 될지도 모른다. 우리들의 연구(硏究)에서 저자(著者)의 1/3은 동일(同一) 영역(領域)의 대상(對象)에서 속계적(續繼的)인 연구(硏究)를 수행(遂行)치 않고 새로운 영역(領域)으로 옮아갔다. 우리는 이와 같은 데이터를 (a) 저자(著者)가 각개과학자(各個科學者)의 활동(活動)을 통하여 집중적(集中的)인 과학적(科學的) 노력(努力)을 시험(試驗)할 때 각자(各自)의 연구(硏究)에 대한 많은 양(量)의 계속성(繼續性)이 어떤 진보중(進步中)의 과학분야(科學分野)에서도 나타난다는 것과 (b) 이 계속성(繼續性)은 과학(科學)에 대한 집중적(集中的) 진보(進步)의 필요적(必要的) 특질(特質)이라는 것을 의미한다. 또한 우리는 이 계속성(繼續性)과 관련(關聯)되는 유통문제(流通問題)라는 새로운 대상영역(對象領域)으로 전환(轉換)할 때 연구(硏究)의 각단계(各段階)의 진보(進步)와 새로운 목적(目的)으로 전환시(轉換時) 양자(兩者)가 다 필요(必要)로 하는 각개(各個) 과학자(科學者)의 정보수요(情報需要)를 위한 시간(時間) 소비(消費)라는 것을 탐지(探知)할 수 있다. 이러한 관찰(觀察)은 정보(情報)의 선택제공(選擇提供)시스팀이 현재(現在) 필요(必要)로 하는 정보(情報)의 만족(滿足)을 위하여는 효과적(效果的)으로 매우 융통성(融通性)을 띠어야 한다는 것을 암시(暗示)하는 것이다. 본고(本稿)의 시리이즈에 기술(記述)된 전정보유통(全情報流通) 과정(過程)의 재검토(再檢討) 결과(結果)는 과학자(科學者)들이 항상 그들의 요구(要求)를 조화(調和)시키는 신축성(伸縮性)있는 유통체제(流通體制)를 발전(發展)시켜 왔다는 것을 시사(示唆)해 주고 있다. 이 시스팀은 정보전파(情報傳播) 사항(事項)을 중심(中心)으로 이루어 지며 또한 이 사항(事項)의 대부분(大部分)의 참여자(參與者)는 자기자신(自己自身)이 과학정보(科學情報) 전파자(傳播者)라는 기본적(基本的)인 정보전파체제(情報傳播體制)인 것이다. 그러나 이 과정(過程)의 유통행위(流通行爲)에서 살펴본 바와 같이 우리는 대부분(大部分)의 정보전파자(情報傳播者)가 역시 정보(情報)의 동화자(同化者)-다시 말해서 과학정보(科學情報)의 생산자(生産者)는 정보(情報)의 이용자(利用者)라는 것을 알 수 있다. 이 연구(硏究)에서 전형적(典型的)인 과학자((科學者)는 과학정보(科學情報)의 생산(生産)이나 전파(傳播)의 양자(兩者)에 연속적(連續的)으로 관계(關係)하고 있음을 보았다. 만일(萬一) 연구자(硏究者)가 한 편(編)의 연구(硏究)를 완료(完了)한다면 이 연구자(硏究者)는 다음에 무엇을 할 것이냐 하는 관념(觀念)을 갖게 되고 따라서 "완료(完了)된" 연구(硏究)에 관한 정보(情報)를 이용(利用)하여 동시(同時)에 새로운 일을 시작(始作)하게 된다. 예를 들어, 한 과학자(科學者)가 동일(同一) 영역(領域)의 다른 동료연구자(同僚硏究者)에게 완전(完全)하며 이의(異議)에 방어(防禦)할 수 있는 보고서(報告書)를 제공(提供)할 수 있는 단계(段階)에 도달(到達)하였다면 우리는 이 과학자(科學者)가 정보유통과정(情報流通過程)에서 많은 역할(役割)을 해낼 수 있다는 것을 알 것이다. 즉 이 과학자(科學者)는 다른 과학자(科學者)들에게 최신(最新)의 과학적(科學的) 결과(結果)를 제공(提供)할 때 하나의 과학정보(科學情報) 전파자(傳播者)가 되며, 이 연구(硏究)의 의의(意義)와 타당성(妥當性)에 관한 논평(論評)이나 비평(批評)을 동료(同僚)로부터 구(求)하는 관점(觀點)에서 보면 이 과학자(科學者)는 하나의 정보탐색자(情報探索者)가 된다. 또한 장래(將來)의 이용(利用)을 위하여 증정(贈呈)이나 동화(同化)한 이 정보(情報)로부터 피이드백을 받아 드렸을 때의 범주(範疇)에서 보면 (잡지(雜誌)에 투고(投稿)하기 위하여 원고(原稿)를 작성(作成)하는 경우에 있어서와 같이) 과학자(科學者)는 하나의 정보이용자(情報利用者)가 되고 이러한 모든 가능성(可能性)에서 정보생산자(情報生産者)는 다음 정보생산(情報生産)에 이미 들어가 있다고 볼 수 있다(저자(著者)들의 2/3는 보문(報文)이 게재(揭載)되기 전(前)에 이미 새로운 연구(硏究)를 시작(始作)하였다). 과학자(科學者)가 자기연구(自己硏究)를 마치고 예비보고서(豫備報告書)를 만든 후(後) 자기연구(自己硏究)에 관한 정보(情報)의 전파(傳播)를 계속하게 되는데 이와 관계(關係)되는 일반적(一般的)인 패턴을 보면 소수(少數)의 동료(同僚)그룹에 출석(出席)하는 경우 (예로 지역집담회)(地域集談會))와 대중(大衆) 앞에서 행(行)하는 경우(예로 국가적 회합(國家的 會合)) 등이 있다. 그러는 동안에 다양성(多樣性) 있는 성문보고서(成文報告書)가 이루어진다. 그러나 과학자(科學者)들이 자기연구(自己硏究)를 위한 주정보전파목표(主情報傳播目標)는 과학잡지중(科學雜誌中)에 게재(揭載)되는 보문(報文)이라는 것이 명확(明確)한 사실(事實)인 것이다. 이러한 목표(目標)에 도달(到達)할 때까지의 각(各) 정보전파단계(情報傳播段階)에서 과학자(科學者)들은 목표달성(目標達成)을 위하여 청중(聽衆), 자기동화(自己同化)된 정보(情報) 및 이미 이용(利用)된 정보(情報)로부터 피이드백을 탐색(探索)하게 된다. 우리가 본고(本稿)의 시리이즈중(中)에 표현(表現)하려 했던 바와 같이 이러한 활동(活動)은 조사수임자(調査受任者)의 의견(意見)이 원고(原稿)에 반영(反映)되고 또 그 원고(原稿)가 잡지게재(雜誌揭載)를 위해 수리(受理)될 때까지 계속적(繼續的)으로 정보(情報)를 탐색(探索)하는 과학자(科學者)나 기타(其他)사람들에게 효과적(效果的)이었다. 원고(原稿)가 수리(受理)되면 그 원고(原稿)의 저자(著者)들은 그 보문(報文)의 주내용(主內容)에 대하여 적극적(積極的)인 정보전파자(情報傳播者)로서의 역할(役割)을 종종 중지(中止)하는 일이 있는데 이때에는 저자(著者)들의 역할(役割)이 변화(變化)하는 것을 볼 수 있었다. 즉 이 저자(著者)들은 일시적(一時的)이긴 하나 새로운 일을 착수(着手)하기 위하여 정보(情報)의 동화자(同化者)를 찾게 된다. 또한 전(前)에 행한 일에 대한 의견(意見)이나 비평(批評)이 새로운 일에 영향(影響)을 끼치게 된다. 동시(同時)에 새로운 과학정보생산(科學情報生産) 과정(過程)에 들어가게 되고 현재(現在) 진행중(進行中)이거나 최근(最近) 완료(完了)한 연구(硏究)에 대한 정보(情報)를 항상 찾게 된다. 활발(活潑)한 연구(硏究)를 하는 과학자(科學者)들에게는, 동화자(同化者)로서의 역할(役割)과 전파자(傳播者)로서의 역할(役割)을 분리(分離)시킨다는 것은 실제적(實際的)은 못된다. 즉 후자(後者)를 완성(完成)하기 위해서는 전자(前者)를 이용(利用)하게 된다는 것이다. 과학자(科學者)들은 한 단계(段階)에서 한 전파자(傳播者)로서의 역할(役割)이 뚜렷하나 다른 단계(段階)에서는 정보교환(情報交換)이 기본적(基本的)으로 정보동화(情報同化)에 직결(直結)되고 있는 것이다. 정보전파자(情報傳播者)와 정보동화자간(情報同化者間)의 상호관계(相互關係)(또는 정보생산자(情報生産者)와 정보이용자간(情報利用者間))는 과학(科學)에 있어서 하나의 필수양상(必修樣相)이다. 과학(科學)의 유통구조(流通構造)가 전파자(傳播者)(이용자(利用者)로서의 역할(役割)보다는)의 필요성(必要性)에서 볼 때 복잡(複雜)하고 다이나믹한 시스팀으로 구성(構成)된다는 사실(事實)은 과학(科學)의 발전과정(發展過程)에서 필연적(必然的)으로 나타난다. 이와 같은 사실(事實)은 과학정보(科學情報)의 전파요원(傳播要員)이 국가적 회합(國家的 會合)에서 자기연구(自己硏究)에 대한 정보(情報)의 전파기회(傳播機會)를 거절(拒絶)하고 따라서 전파정보(電波情報)를 판단(判斷)하고 선별(選別)하는 것을 감소(減少)시키며 결과적(結果的)으로 잡지(雜誌)나 단행본(單行本)에서 비평(批評)을 하고 추고(推敲)하는 것이 배제(排除)될 때는 유형적(有形的) 과학(科學)은 급속(急速)히 비과학성(非科學性)을 띠게 된다는 것을 Lysenko의 생애(生涯)에 대한 Medvedev의 기술중(記述中)[7]에 지적(指摘)한 것과 관계(關係)되고 있다.

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A Survey on the Perception of the Counterplans of Medical Accident and Dispute of Dental Hygienist (의료사고 및 의료분쟁에 대한 치위생사의 인식도 조사)

  • Oh, Jin-Ho;Kwon, Jeong-Seung;Ahn, Hyoung-Joon;Kang, Jin-Kyu;Choi, Jong-Hoon
    • Journal of Oral Medicine and Pain
    • /
    • v.32 no.1
    • /
    • pp.9-33
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    • 2007
  • In the field of dentistry, there existed relatively few emergency patients or patients who need intensive care and thus had low medical dispute rates. However, these days, there is a general tendency of increased medical disputes. Although many medical disputes are caused by medical accidents of the dentists, because dental assistants are also lawfully involved in practicing dentistry, there is a possibility of medical disputes or medical accidents caused by dental assistants. Therefore, the role of the dental assistants cannot be ignored. This study consists of a survey given to dental hygienists currently working in general hospitals, dental hospitals and private dental clinics. Following is the results of the analysis of 275 respondents' backgrounds, medical disputes rates including patients' complaints, their understanding of medical regulations and their general understanding of overall dental practice and medical disputes. 1. 251 of 274(91.6%) respondents doubted the risk of medical accident and dispute. 2. 81(29.5%) dental hygienist experienced complaint from patients. They have been working in the private dental clinic, the rate of this experience was high. 3. 349 case of 1805(19.3%) the complaints by patients, highest percentage among its category, were those regarding dental fees and poor service. 4. 129 case of 1805(7.1%) patients' complaints, highest percentage among it's subcategory, were those regarding the absence of explanations of precautions or request of agreements before dental treatment. 5. 252 of 267 (94.4%) dental hygienists chart after a scaling treatment. However, only 55(20.7%) dental hygienists chart the fact of explaining the precautions. 6. 6(2.2%) dental hygienists do not inspect patients' medical history, if patients don't mention it. 7. 104 of 274(38.0%) dental hygienists responded to be capable of administering first aid treatment. 8. 115(41.8%) dental hygienists have a first aid kit and equipment. 9. In case of medical dispute, 268(97.8%) dental hygienists respond that, charting plays a big role in resolving the dispute. 10. In case of medical dispute, 272(93.3%) dental hygienists respond that, explanation and agreement before treatment have an important role in settlement of dispute 11. Only 160(58.4%) dental hygienists responded correct answer that the duration of keeping medical records is 10 years. 12. 124(45.3%) respondents thought that it is legal for a dental hygienist to take a panoramic dental X-ray, 71(25.9%) respondents thought that it is legal practice cervical resin treatment by dental hygienist, and 37(13.5%) respondents thought that it is legal extract primary teeth by dental hygienist. 13. 24(18.76%) respondents thought that it doesn't matter to tell patient's state to others 14. 272(99.27%) responded that receiving education for the prevention of medical disputes was needed and of them, 61.0% thought it was urgent. 15. 186(64.2%) has never had classes regarding the prevention of medical disputes while in school and 212(77.4%) has not had the same type of classes after graduating from school. 16. 256(93.4%) responded that there will be even more of an increased number of medical disputes. Among them, 83.3% of respondents though that due to the increased opportunity of acquiring information through the internet and mass media. The study shows that 29.5 percentage of dental hygienists have experienced the medical disputes and complaints and they are lack of recognition of medical regulations and dental hygienist's official duty. So, there is a big potential of the percentage to increase. Therefore, the correct understanding of explaining precautions and requesting agreement before dental treatments and performing them are mandatory. Moreover, classes regarding the prevention and counterplans of medical disputes need to be widely offered.

Studies on Classification and Genetic Nature of Korean Local Corn Lines (한국(韓國) 재래종(在來種) 옥수수의 계통분류(系統分類) 및 유전적(遺傳的) 특성(特性)에 관(關)한 연구(硏究))

  • Lee, In Sup;Choi, Bong Ho
    • Korean Journal of Agricultural Science
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    • v.9 no.1
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    • pp.396-450
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    • 1982
  • To obtain basic information on the Korean local corn lines a total of 57 lines were selected from 1,000 Korean local collection at Chungnam National University, classified by principal component analysis, and genetic nature was investigated. The results are summarized as follows. 1. There were a great variation in mean values of plant characters of the lines. The mean values of plant characters except for density of kernels varied with types of crossing. All characters except. for tasselling dates were reduced in magnitude when selfed, while those characters were increased when topcrossed. 2. The correlation coefficients among characters studied ranged front 0.99 to -0.59. The correlation coefficients among characters were not greatly changed depending upon types of crosses. 3. In order to classify the lines more effectively, selected 12 plant characters were used to classify 57 local lines by principal component analysis. The first four component could explain 86.4%, 83.4% and 81.1% of the total variations in sibbed lines, selfed lines and topcrossed lines, respectively. 4. Contribution of characters to principal component was high at upper principal components and low at lower principal components. 5. Biological meaning of the principal component and plant types corresponding to the each principal component were explained clearly by the correlation coefficient between principal components and characters. The first principal component appeared to correspond to the size of plant and ear. The second principal component appeared to correspond to the degree of differentiation in organs and the duration of vegetative growing period. But biological meaning of the third and fourth principal components was not clear. 6. The lines were classified into 4 lineal groups by the taxonomic distance. Group I included 52 lines which was 91.2% of total lines, group II 3 lines, group III 1 lines and group IV I lines, respectively. Four groups could be characterized as follows : Group I : early maturity, short-culmed, medium height plant, small ears, medium kernels and medium yielding. Group II : late maturity, medium height plant, small ears, small kernels, prolific ears and higher yielding. Group III : medium maturity, tall-culmed, small ears, small kernels and low yielding. Group IV : medium maturity, tall-calmed, large ears, one ear plant and me yielding. 7. The inbreeding depression varied with plant characters and lines. The characters such as yield, kernel weight per ear, ear weight and plant height showed great degree of inbreeding depression. Group I showed high inbreeding depression in such characters as 100 kernel weight, leaf number, plant height and days to tasselling, while group II showed high inbreeding depression in other plant characters. 8. Heterosis of plant characters varied also with lines. The ear weight, kernel weight per ear, yield, 100 kernel weight, and plant height were some of the plant characters showing high heterosis. Group II showed high values of heterosis in such characters as ear length, ear diameter, ear weight, kernel weight per ear, 100 kernel weight, and leaf length, while group I was high in heterosis in other plant characters. 9. The degree of homozgosity was highest in ear weight (79.1%) and lowest in ear number per plant (-21%). Group II showed higher degree of homozygosity than group I. 10. Correlation coefficients between characters of ribbed and topcrossed lines were positive for all characters. Highly significant. correlation coefficients between ribbed and topcrossed lines were obtained especially for characters such as ear number per plant, plant height, leaf length and yield per plot.

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A Study on the Meaning and Cultural Properties Value of Rock-Go-Board from the Viewpoint of Site and Location Characteristics (입지와 장소 특성으로 본 암각바둑판의 의미와 문화재적 가치)

  • Park, Joo Sung;Rho, Jae Hyun;Sim, Woo Kyung
    • Korean Journal of Heritage: History & Science
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    • v.44 no.4
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    • pp.172-205
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    • 2011
  • Go bears significant meanings in terms of cultural and entertaining functions in Asia Eastern such as China and Japan. Beyond the mere entertaining level, it produces philosophical and mythic discourse as well. As a part of effort to seek an identity of Korean traditional garden culture, this study traced back to find meanings of rock-go-board and taste for the arts which ancestors pursued in playing Go game, through analysis and interpretation of correlation among origin of place name, nearby scenery, carved letters and vicinal handed-down place name. At the same time, their position, shape and location types were interpreted through comprehensive research and analysis of stone-go-boards including rock-go-board. Particularly, it focused on the rock names related to Sundoism(仙道) Ideal world, fixed due to a connection between traces of Sundoism and places in a folk etymology. Series of this work is to highlight features of the immortal sceneries, one of traditional landscaping ideals, by understanding place identity and scenic features of where the rock-go-boards are carved. These works are expected to become foundation for promotion and preservation of the traditional landscaping remains. The contents of this study could be summarized as follows; First, round stone and square board for round sky and angled land, black and white color for harmony of yin and yang and 361paths for rotating sky are symbols projecting order of universe. Sayings of Gyuljungjirak(橘中之樂), Sangsansaho(商山四皓), Nangagosa(爛柯故事) formed based on the idea of eternity stand for union of sky and sun. It indicates Go game which matches life and nature spatiotemporally and elegant taste for arts pursuing beauty and leisure. Second, the stone-go-boards found through this research, are 18 in total. 3 of those(16.1%), Gangjin Weolnamsaji, Yangsan Sohanjeong and Banryongdae ones were classified into movable Seokguk and 15(83.9%) including Banghakdong were turned out to be non-movable rock-go-boards carved on natural rocks. Third, upon the result of materializing location types of rock-go-boards, 15 are mountain stream type(83.9%) and 3 are rock peak type(16.1%). Among those, the one at Sobaeksam Sinseonbong is located at the highest place(1,389m). Considering the fact that all of 15 rock-go-boards were found at mountainous areas lower than 500m, it is recognizable that where the Go-boards are the parts of the living space, not far from secular world. Fourth, there are 7 Sunjang(巡將) Go with 17 Hwajeoms(花點), which is a traditional Go board type, but their existences, numbers and shapes of Hwajeom appear variously. Based on the fact, it is recognizable that culture of making go-board had been handed down for an extended period of time. Among the studied rock-goboards, the biggest one was Muju Sasunam[$80(82)cm{\times}80(82)cm$] while the smallest one was Yangsan Sohandjeong Seokguk ($40cm{\times}40cm$). The dimension of length and breadth are both $49cm{\times}48cm$ on average, which is realistic size for actual Go play. Fifth, the biggest bed rock, an under-masonry with carved Go-board on it, was one in Muju Sasunam[$8.7m{\times}7.5m(65.25m^2)$], followed by ones in Hoengseong Chuiseok[$7.8m{\times}6.3m(49.14m^2$] and Goisan Sungukam[$6.7m{\times}5.7m(37.14m^2)$]. Meanwhile, the smallest rock-go-board was turned out to be one in Seoul Banghak-dong. There was no consistency in directions of the Go-boards, which gives a hint that geographical features and sceneries of locations were considered first and then these were carved toward an optimal direction corresponding to the conditions. Sixth, rock-go-boards were all located in valleys and peaks of mountains with breathtaking scenery. It seems closely related to ancestors' taste for arts. Particularly, rock-go-boards are apprehended as facilities related to taste for arts for having leisure in many mountains and big streams under the idea of union of sky and human as a primitive communal line. Go became a medium of hermits, which is a traditional image of Go-game, and symbol of amusement and entertainment with the idea that Go is an essence of scholar culture enabling to reach the Tao of turning back to nature. Seventh, the further ancient time going back to, the more dreamlike the Go-boards are. It is an evident for that Sundoism, which used to be unacceptable once, became more visible and realistic. Considering the high relation between rock-go-boards and Sundoism relevant names such as Sundoism peak in Danyang Sobaeksan, 4 hermits rock in Muju and Sundoism hermit rock in Jangsu, Sundoism hermit rocks and rock-go-boards are sceneries and observation spots to express a communication of worship and longing for Sundoism. Eighth, 3 elements-physical environment such as location type of the rock-go-boards, human activities concentrated on 8 sceneries and Dongcheongugok(洞天九曲) setup and relevancy to Confucian scholars, as well as 'Sangsansaho' motif and 'Nangagosa' symbolic meaning were used as interpretation tools in order to judge the place identity. Upon the result, spatial investigation is required with respect to Sunyoodongcheon(仙遊洞天) concept based on enjoyment to unify with the nature rather than Dongcheongugok concept of neo-Confucian, for Dongcheon and Dongmoon(洞門) motives carved around the rock-go-boards. Generally, places where mountain stream type rock-go-boards were formed were hermit spaces of Confucianism or Sundoism. They are considered to have compromised one other with the change of times. Particularly, in the rock-go-board at the mountain peak, sublimity-oriented advent of Sundoism is considered as a significant factor to control place identity. Ninth, including where the rock-go-boards were established, the vicinal areas are well-known as parts of Dongcheongugok and Palkyung(八景) mostly. In addition, many of Sundoism relevant expressions were discovered even in the neighboring carvings written by scholars and nobility, which means sophisticated taste based on longing for Sundoism world played a significant role in making go-board. The rock-go-board is an integration of cultural phenomena naturally managed by seclusion of scholars in the Joseon Dynasty as well as remains and essence of Korean traditional landscaping. Some rock-go-boards out of 17 discovered in South Korea, including ones in Sobaeksan Sinsunbong, Banghak-dong, Chungju Gongili, Muju Sasunam, Yangsan Eogokdong Banryongdae Seokguk, are damaged such as cracks in rocks or fainted lines by hardships of time and hand stains. Worse yet, in case of Eunyang Bangudae Jipcheongjeong board, it is very difficult to identify the shape due to being buried. Rock-go-boards are valuable sculptures in terms of cultural asset and artwork since they reflect ancestors' love for nature and longing for Sundoism world. Therefore, they should be maintained properly with right preservation method. Not only rock-boards itself but also peripheral places are excellent cultural heritages and crucial cultural assets. In addition, vicinal sceneries of where rock-goboards and pavilion spots are the representative remains of embracing prototype of Korean traditional landscaping and major parts of cultural properties.

CLINICAL AND NEUROPSYCHOLOGICAL CHARACTERISTICS OF DSM-IV SUBTYPES OF ATTENTION DEFICIT HYPERACTIVITY DISORDER (주의력결핍 과잉행동장애의 아형별 신경심리학적 특성 비교)

  • Cheung, Seung-Deuk;Lee, Jong-Bum;Kim, Jin-Sung;Seo, Wan-Seok;Bai, Dai-Seg;Chun, Eun-Jin;Suh, Hae-Sook
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.13 no.1
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    • pp.139-152
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    • 2002
  • Objectives:This study was conducted to compare the clinical and neuropsychological characteristics by DSM-IV subtypes of attention deficit hyperactivity disorder(ADHD) patients who did not have comorbid psychiatric disorders. Methods:5-15 year old children with ADHD were recruited at psychiatric outpatient clinic of Yeungnam University hospital and the patients with comorbidity or neurological abnormalities were excluded. Finally, total 404 children with ADHD were selected for this study. There were 234 subjects of ADHD-C(57.9%), 156 subjects of ADHD-I(38.6%) and 14 subjects of ADHD-HI(3.5%), who fulfilled the DSM-IV diagnostic criteria. The mean age of the total subjects was 9.63±2.49 years old. The psychopathology, IQ, behavioral problems, neuropsychological executive function were evaluated before pharmacological treatment. The measures were Korean Personality Inventory of Child(K-PIC) for psychopathology, 4 behavioral check lists(ADDES-HV, ACTeRS, CAP, SNAP) for behavioral symptoms of ADHD, K-ABC and KEDI-WISC for IQ and Conner's CPT, WCST, SST for neuropsychological executive functions. Results:1) The prevalence of subtypes was ADHD-C, ADHD-I, ADHD-HI in decreasing order. There was no sex difference of prevalence among three subtypes. The mean age of ADHD-I was older than other subtypes. 2) There was significant differences of psychopathology among subtypes, the ADHD-C and ADHD-HI had higher than the ADHD-I in the scores of delinquent, hyperactivity and psychosis;the ADHD-C had higher than the ADHD-I in the scores of family relation and autism, the scores of ego resilience were lower than the ADHD-I. However, there was no difference in anxiety, depression and somatization scores among them. 3) The results of behavioral symptom check lists, the ADHD-C had higher the score of inattention, hyperactivity and impulsivity than the ADHD-I. Meanwhile the results of ACTeRs, which rated by the teachers, were different. 4) There were significant differences of sequential processing scale and arithmetics among subtypes in IQ using K-ABC, but there was no significant difference between the ADHD-C and the ADHD-I after excluding the ADHD-HI due to small numbers. 5) There was numerical difference among subtypes but did not reach statistical significance in three neuropsychological executive function tests. Conclusion:In conclusion, our results revealed that there was significant difference in clinical features among three subtypes but, no significant difference in executive functions.

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Study on Acknowledge and State of Clinical Experience for 3-years Dental Technology Department (3년제 치기공과 임상실습에 대한 인식 및 실태조사 - 일부 치과기공소 소장을 중심으로 -)

  • Park, Myung-Ja
    • Journal of Technologic Dentistry
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    • v.17 no.1
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    • pp.41-57
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    • 1995
  • This study was conducted to collect and analyze previous information in order to manage efficience, improve experience effect and promote employment rate. The questionnaire interview with 27 chief of dental Laboratory refered clinical experience in technology department about clinical experience in 14 Jumior colleges were also investigated. The results were summarried as follows : The portion of age of 35-39 among chief of dental Laboratory was 40.7% which was the highest, that of male was 96.3%, that of junior college graduate was 97.5%, that of 10years experience was 92.6% and that of ceramic technician was 85.2%, 63.0% dental laboratory for clinical experience was a bore space of 30pyong. Aspect of dental laboratory management, manufacturing all part of prosthetic restoration was 29.6%, othodontic appliance and ceramic restoration was 7.4%, 3.8%, each. The percentage of 40.7 was having connection with 30-3a dental clinics and referring case per day was 10-19 cases(40.7%), manufacturing time of referred prosthetic restoration was 3-4 days(77.8%), places preparing seminar room for education was 29.6%, above a place of 40pyong was 11.1% 30-34 pyong and 35-39 pyong was 7.4% each. During training of 2 years education course student, 18.5% was rack of thorough occupational career. While 44.4% will want the more salary among 3years education course student, 74.1% will expect the more dental techmicians would engaged in their field, 51.9% will hope improve of their theory and practice, 29.6% be expected better skill and 14.8% be expected better theory. Attitude of clinical experience places was distributed by 59.3% of offering only experience chance, 25.9% of wasting time and 29.0% of annoying. The big emphasis of climical experience was thorough occupational career(44.4%). The clinical experience places of our college were selected after direct visiting, so their condition of management was not that bad but most of dental laboratory were poor in management state and working environment. Therefore it is difficult to choose appropriate places and dental Laboratory are also limited manpower and time as suppliers. So that it recommended to induce flexible management of experience period by interval and rotation of experience places among college and to applicate intern-system for employment ant industry-college cooperation aspect.

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