• 제목/요약/키워드: National science fair

검색결과 178건 처리시간 0.022초

A Study on Performance Assessment Methods by Using Fuzzy Membership Function and Fuzzy Reasoning

  • Je, Sung-kwan;Jang, Hye-Won;Shin, Bok-Suk;Kim, Cheol-Ki;Jaehyun Cho;Kim, Kwang-Baek
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2003년도 ISIS 2003
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    • pp.608-611
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    • 2003
  • Performance assessment was introduced to improvement of self-directed learning and method of assessment for differenced learning as the seventh educational curriculum is enforced. Performance assessment is overcoming limitation about problem solving ability and higher thinking abilities assessment that is problem of a written examination and get into the spotlight by way for quality of class and school normalization. But performance assessment has problems about possibilities of assessment fault by appraisal, fairness, reliability, and validity of grading, ambiguity of grading standard, difficulty about objectivity security etc. This study proposes fuzzy performance assessment system to solve problem of the conventional performance assessment. This paper presented an objective and reliable performance assessment method through fuzzy reasoning, design fuzzy membership function and define fuzzy rule analyzing factor that influence in each sacred ground of performance assessment to account principle subject. Also, performance assessment item divides by formation estimation and subject estimation and designed membership function in proposed performance assessment method. Performance assessment result that is worked through fuzzy performance assessment system can pare down burden about appraisal's fault and provide fair and reliable assessment result through grading that have correct standard and consistency to students.

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목포지역 대학생의 식생활행동 및 영양실태조사 (An Survey of Dietary Life and Nutrition Status in Mokpo National University)

  • 황혜선
    • 한국식품영양과학회지
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    • 제20권1호
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    • pp.65-71
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    • 1991
  • The purpose of this survey was to study Nutrition Status related to eating behabvior health status and nutrient intake. this survey was conducted for 100 students at Mokpo National University from semptember 25 to 29 in 1989. Average height and weight of students were found to be increased for last thirty years from 1957 to 1989. the average height of male and female were 172.0cm 160.1cm and the average weight of those were 63.4kg 48.2kg respectively. Health status showed fair. but most of students had symptoms such as stress cold and disorder of stomach. The main purpose of eating is to satisfy hungry and routinal work. Most students have had dietary problems such as irregularity of meal time and skipping meal. Most nutrients was intaken properly but some were under percentae of RDA. For the male the average intake of Calorie(84.5%) and Vitamin B2(93.3%) were lower than RDA for the frmale that of Calorie(81.7%) and Iron(80.6%) The ration of percent calorie of Carbohyd-rate : Protein : Fat from total calories in male was 65:15:20 and that of female was 64 : 15: 21 this result was properly approached to the Recommend Calorie Composition(Based on Recommended Allwances 5th ed. Korea FAO Assoc. 1989)

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Assessment of Residents' Understanding and Demands on Gardens in Gyeongnam Region, Korea

  • Kim, Inhea;Huh, Keun Young
    • 인간식물환경학회지
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    • 제22권2호
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    • pp.167-180
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    • 2019
  • This study was conducted to investigate effective ways to meet social and cultural interest in and needs of gardens and gardening. A total of 191 respondents who answered they were living in Gyeongnam region in the questionnaire were selected: 102 (53.4%) were males and 89 (46.6%) were females. In frequency of garden visits, 45% of the respondents answered they visited gardens once a year. Their preferred companion was family (43.6%), followed by friends/colleagues (24.3%). Their important motives of garden visits included admiration of gardens' scenery and ambience, pleasure in being outdoors, relaxing mentally and physically, and appreciation of plants. Relatively less important motives included understanding or educating about nature and environmental conservation, and interest in garden design and horticulture techniques. In the overall assessment of gardens and gardening, the quality of the establishment, management and operation of botanic gardens and arboreta in Gyeongnam region scored 3.32 scale, which was close to the level of 'fair.' Also, the respondents agreed at 3.91 scale that it was necessary to improve the garden creation, gardening, and garden culture. Meanwhile, many people in Gyeongnam region did not clearly understand differences between garden and public park, also had a very obscure perception of public garden. The results of importance-performance analysis (IPA) indicated that it is necessary to concentrate on directing and developing some programs such as admiration of beautiful and exotic plants, and education on garden culture including garden making and horticultural techniques.

과학 탐구 지도에 대한 초등학교 교사들의 인식 조사 (Investigation of elementary teachers' perspectives on science inquiry teaching)

  • 전경문
    • 과학교육연구지
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    • 제39권2호
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    • pp.267-277
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    • 2015
  • 본 연구에서는 초등학교 교사들의 과학 탐구 지도에 대한 인식을 조사하였다. 먼저 교사들의 탐구 지도 경험에 대해 자유롭게 서술하도록 하여, 교사들이 인식하고 있는 탐구 지도 유형을 세 가지로 분류할 수 있었다. 관찰, 분류, 측정, 예상, 공정한 비교 등을 강조하는 '과학 과정기능 중심' 범주, 학생들이 스스로 문제를 생성하도록 하는 '과학 문제 발견' 범주, 그리고 제시된 절차에 따라 실험을 수행하며 과학적 개념이나 내용을 증명하는 '개념이나 내용 예증' 범주이다. 다음으로 18개의 활동이 각각 적힌 카드를 '탐구를 통한 과학 수업' 카드를 중심으로 한 이차원적 평면에 자유롭게 배치하도록 한 후, 중심 카드와 각 카드 사이의 상대적인 거리를 측정하였다. '학생들이 적절한 절차를 설계하고 수행'하는 것이 탐구와 가장 밀접하게 관련 있는 활동으로 인식되고 있었다. 이러한 결과는 (예비)교사의 탐구 이해도를 증진시키기 위해 적극 활용되어야 하고, 나아가 초등학교 현장에서 탐구를 통한 과학교육이 보다 활성화되어야 할 것이다.

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신구저수지의 수질특성 및 LEHA 어류모델을 이용한 생태건강도 평가 (Waterquality Characteristics and Ecosystem Health Assessments Using a LEHA Fish Model in Shingu Reservoir)

  • 이재연;이상재;한정호;이의행;최지웅;황순진;안광국
    • 생태와환경
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    • 제41권spc호
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    • pp.42-49
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    • 2008
  • 본 연구에서는 2006년 6월부터 2007년 9월까지 신구저수지의 4개 지점을 선정하여 총 4차례의 어류조사를 실시하였다. 조사결과 붕어와 참붕어 등 내성종이면서 잡식성종이 크게 우점하는 것으로 나타났으며, 민감종은 유입천 지점에 위치한 54를 제외하고 전혀 출현하지 않았다. 잡식성종은 전체의 78%를 차지하여, 트로픽길드의 단순화 현상이 나타나는 것으로 판단되었다. 저수지의 생태건강도는 평균 "보통에서 악화상태 (Fair${\sim}$poor)"로 나타나고 있었으며, 저수지의 부영양화와 수질오염이 생태건강도에 큰 영향을 미치는 것으로 판단되었다. 따라서 저수지로의 영양염과 생활하수의 유입 차단이 필요한 것으로 판단되었으며, 향후 지속적인 관리가 필요한 것으로 사료되었다.

미성숙견에서 선천성 Peritoneopericardial diaphragmatic hernia 발생례 (Peritoneopericardial diaphragmatic hernia in a immature dog)

  • 연성찬
    • 대한수의학회지
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    • 제39권1호
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    • pp.226-229
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    • 1999
  • A 5-month-old, 5kg, intact male mixed dog was admitted to the Veterinary Medical Teaching Hospital of the College of Veterinary Medicine Cornell University because of severe systolic murmur. On physical examination, the dog appeared to be thin and slightly small for his age. Radiographic studies with barium sulfate clearly showed the presence of loops of intestines in the pericardium. Based on these findings peritoneopericardial diaphragmatic hernia was diagnosed. Many abnormalities were found in dog's heart : ventricular septal defect, pulmonic stenosis with moderate pulmonic valve insufficiency, and mild mitral and tricuspid valve insufficiency. Puppy's longterm prognosis was fair. His intestines were removed from his pericardium and the defect in his diaphragm was closed. The surgery went smoothly and puppy recovered very nicely from anesthesia.

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종합병원 입원 환자의 간호대학생 실습허용에 대한 견해 및 인식 (Opinions and Perceptions on Allowing Nursing Students' Practice among Inpatients at a University Hospital)

  • 김영진;김지선;김혜림;박수비;소샛별;정보성;조은애;이선영;김정은
    • Perspectives in Nursing Science
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    • 제14권1호
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    • pp.10-20
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    • 2017
  • Purpose: The aim of this study was to explore the patients' perspectives on nursing students' clinical practices in the wards, and to investigate their willingness for allowing students to practice on them. Methods: This was a descriptive study. 116 inpatients were recruited from the S University Hospital. A 60-item questionnaire was applied to collect the data. The participants were 19 years and older with sound judgement, and were not in special or intensive care units. Data analysis was done in SPSS/WIN 22.0 using descriptive statistics, Fishers exact test, and the ANOVA test. the participant answered to questionnaire from April 29th 2016 to May 10th. Results: 40 participants (34.5%) stated they would allow students' practice, while 72 (61.2%) said they would allow only under staff supervision. 5 participants (4.3%) stated they would not allow whatsoever. The 3 most allowed were emotional support, oral care, and vital signs measurement while the 3 least allowed were gastric feeding, intravenous catheterization, and urinary catheterization. Conclusion: Patients were more inclined to allow students to practice on them when a member of the medical team was present. A fair number of participants said they would be more inclined to allow students' practice if they felt the student was competent; hence, reinforcing simulation sessions is vital in enhancing students' competency and ultimately practice allowance.

Distribution of Vital, Environmental Components and Nutrients Migration Over Sedimentary Water Layers

  • Khirul, Md Akhte;Kim, Beom-Geun;Cho, Daechul;Kwon, Sung-Hyun
    • 한국환경과학회지
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    • 제30권3호
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    • pp.195-206
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    • 2021
  • Contaminated marine sediment is a secondary pollution source in the coastal areas, which can result in increased nutrients concentrations in the overlying water. We analyzed the nutrients release characteristics into overlying water from sediments and the interaction among benthic circulation of nitrogen, phosphorus, iron, and sulfur were investigated in a preset sediment/water column. Profiles of pH, ORP, sulfur, iron, nitrogen, phosphorus pools were determined in the sediment and three different layers of overlying water. Variety types of sulfur in the sediments plays a significant role on nutrients transfer into overlying water. Dissimilatory nitrate reduction and various sulfur species interaction are predominantly embodied by the enhancing effects of sulfide on nitrogen reduction. Contaminant sediment take on high organic matter, which is decomposed by bacteria, as a result promote bacterial sulfate reduction and generate sulfide in the sediment. The sulfur and iron interactions had also influence on phosphorus cycling and released from sediment into overlying water may ensue over the dissolution of ferric iron intercede by iron-reducing bacteria. The nutrients release rate was calculated followed by release rate equation. The results showed that the sediments released large-scale quantity of ammonium nitrogen and phosphate, which are main inner source of overlying water pollution. A mechanical migration of key nutrients such as ammonia and inorganic phosphate was depicted numerically with Fick's diffusion law, which showed a fair agreement to most of the experimental data.

Relationship between Low-level Clouds and Large-scale Environmental Conditions around the Globe

  • Sungsu Park;Chanwoo Song;Daeok Youn
    • 한국지구과학회지
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    • 제43권6호
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    • pp.712-736
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    • 2022
  • To understand the characteristics of low-level clouds (CLs), environmental variables are composited on each CL using individual surface observations and six-hourly upper-air meteorologies around the globe. Individual CLs has its own distinct environmental conditions. Over the eastern subtropical and western North Pacific Ocean in JJA, stratocumulus (CL5) has a colder sea surface temperature (SST), stronger and lower inversion, and more low-level cloud amount (LCA) than the climatology whereas cumulus (CL12) has the opposite characteristics. Over the eastern subtropical Pacific, CL5 and CL12 are influenced by cold and warm advection within the PBL, respectively but have similar cold advection over the western North Pacific. This indicates that the fundamental physical process distinguishing CL5 and CL12 is not the horizontal temperature advection but the interaction with the underlying sea surface, i.e., the deepening-decoupling of PBL and the positive feedback between shortwave radiation and SST. Over the western North Pacific during JJA, sky-obscuring fog (CL11), no low-level cloud (CL0), and fair weather stratus (CL6) are associated with anomalous warm advection, surface-based inversion, mean upward flow, and moist mid-troposphere with the strongest anomalies for CL11 followed by CL0. Over the western North Pacific during DJF, bad weather stratus (CL7) occurs in the warm front of the extratropical cyclone with anomalous upward flow while cumulonimbus (CL39) occurs on the rear side of the cold front with anomalous downward flow. Over the tropical oceans, CL7 has strong positive (negative) anomalies of temperature in the upper troposphere (PBL), relative humidity, and surface wind speed in association with the mesoscale convective system while CL12 has the opposite anomalies and CL39 is in between.

지도교사의 목소리를 통한 학교 밖 과학 탐구 활동으로서 전국과학전람회의 현주소 (Present State of National Science Contest as a Informal Scientific Education through the Voices of Teachers)

  • 김진욱;이종진;백영경;안유민
    • 대한지구과학교육학회지
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    • 제16권2호
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    • pp.196-209
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    • 2023
  • 본 연구는 학교 밖 과학교육 활동 중 하나인 과학전람회의 교육수요자로서 교사의 인식과 요구를 파악하기 위하여 전국과학전람회를 지도한 경험이 있는 교사 11명을 대상으로 개방형 질문지를 활용하여 그들의 의견을 심층 조사하였다. 총 7문항에 대해 평균 3,600자 이상을 서면 답변하였으며, 이에 대한 질적 분석을 통해 과학전람회 참여로 인한 학생과 교사의 성장, 대회 참여의 어려운 점, 활성화를 위한 교사의 목소리를 알아볼 수 있었다. 교사들은 과학전람회 참여가 개방형 탐구과정을 경험하고 이로 인해 학생의 과학 관련 지식 및 태도의 향상, 이공계 분야 진로 진학으로의 연계가 활발해진다는 점에서 긍정적인 의견을 제시하였다. 다만 대회 참가 학생들은 학교생활기록부에 탐구내용을 기록할 수 없고, 지도교사들은 참신한 주제 발굴에 대한 강박과 탐구과정 지도에서 오는 부담, 전공지식에 대한 전문성 한계를 지적해 과학전람회 참여에 어려움이 있음을 알 수 있었다. 과학전람회 활성화를 위해서는 지도교사와 학생의 역량 강화를 위한 17개 시·도 교육청 수준의 지원 방안, 국립중앙과학관의 홍보 방법 및 심사 방식 개선, 교육부의 학교생활기록부 기재 요령의 개선을 요구하였고, 이를 통해 학교 현장에서 공감할 수 있는 과학전람회 제도 개선의 필요성을 도출하였다.