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Effect of Benzyladenopurine Concentration on Growth and Morphology of Soybean Sprouts and Comparison with Selling Products (BA 처리농도에 따른 콩나물의 생장과 시판 콩나물과의 비교)

  • 강진호;조용준;전병삼;윤수영;전승호;김희규
    • Korean Journal of Plant Resources
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    • v.17 no.2
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    • pp.94-101
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    • 2004
  • Commercial value of soybean sprouts should be affected by their morphology including the lateral roots. This study was carried out to determine the effect of benzyladenopurine (BA) concentration on growth and morphology of soybean sprouts in order to compare them with the selling products collected from the markets. Four cultivars (cv. Eunhakong, Pungsannamulkong, Sowonkong, and Junjery) were cultured for 6 days after imbibed for 5 hours into different BA solutions (0, 1,2,4, and 8 ppm). On the 6th day, hypocotyl length was measured to calculate the composition rate of > 7 cm (A), 4 to 7 cm (B), < 4 cm (C) and non-germination (D), and the ratio of hypocotyl to root length (H/R ratio) on the base of hypocotyl length as well as lateral root, hypocotyl diameter, and fraction fresh and dry weights. The composition rates classified with hypocotyl length showed big differences between 4 cultivars in class A and C; Class A, in which cv. Sowonkong and Junjery had higher rates than cv. Eunhakong and Pungsannamulkong, was decreased with BA concentration of higher than 4 ppm, but class C showed the reverse result to class A. Any lateral root was not formed in higher than 4 ppm BA solutions although fewer in cv. Pungsannamulkong and Junjery than in the two other cultivars. Hypocotyl and root lengths were decreased with increased BA concentrations, and in all BA concentration, hypocotyl length of cv. Junjery was the longest. Hypocotyl diameter, hypocotyl and total fresh weights were thicker and heavier in 2 to 4 ppm BA concentrations than in the other ones, although in case of BA application, cv, Eunhakong and Sowonkong were heavier. The H/R ratios were increased with increased BA concentration. The ratios of nearly all the selling products ranged from 1 to 2 ppm when compared to them from our experiment.

Effect of Jigsaw III Cooperative Learning on Science Achievement and Learning Attitude of Middle School Female Students (Jigsaw III 협동학습이 여학생의 과학학업성취도와 과학학습태도에 미치는 영향)

  • Hwang, Younglan;Park, Yunebae
    • Journal of Science Education
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    • v.35 no.1
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    • pp.91-101
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    • 2011
  • In this study, Jigsaw III cooperative learning strategy and traditional learning strategy have been applied to the 'electricity' chapter of grade 8 science textbooks to know the effects of learning strategy, gender, and GPA on the students' science achievement and science learning attitude of middle school female students in gender-separated classes. For this purpose, 143 students of 4 classes in separated classes were chosen from a middle school in Daegu. One female class and one male class were assigned to the experimental group and other female class and male class were assigned to the control group. Traditional learning strategy was applied to the control group and the Jigsaw III cooperative learning strategy was applied to the experimental group. Four worksheets for expert groups were used for 18 hours through 5 weeks. Both tests for science achievement and learning attitude were administered as pre and post test. The test results were analyzed through analysis of covariance(ANCOVA) as pre test score as covariant The overall conclusions of this study were as follows: The Jigsaw III cooperative learning has improved science achievement, especially on subjective-type questions, of female students and mid-lower level students. The Jigsaw III Cooperative Learning has also improved self-directed attitude toward science learning. Female students have expressed more positive opinion about the Jigsaw III cooperative learning.

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Testing Spatial Autocorrelation of Burn Severity (산불 피해강도의 공간 자기상관성 검증에 관한 연구)

  • Lee, Sang-Woo;Won, Myoung-Soo;Lee, Hyun-Joo
    • Journal of Korean Society of Forest Science
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    • v.101 no.2
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    • pp.203-212
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    • 2012
  • This study aims to test presence of spatial autocorrelation of burn severity in Uljin and Youngduk areas burned in 2011. SPOT satellite images were used to compute the NDVI representing burn severity, and NDVI values were sampled for 5,000 randomly dispersed points for each site. Spatial autocorrelations of sampled NDVI values were analyzed with Moran's I and Variogram models. Moran's I values of burn severity in Uljin and Youngduk areas were 0.7745 and 0.7968, respectively, indicating presence of strong spatial autocorrelations. On the basis of Variogram and changes of Moran's I values by lag class, ideal sampling distance were proposed, which were 566-2,151 m for Uljin and 272-402 m for Youngduk. It was recommended to apply these ranges of sampling distance in flexible corresponding to Anisotropic characteristics of burned areas.

Effect of a Simulated Education-based Hypoglycemia Scenario Using a High-fidelity Simulator on Acquisition and Retention of Diabetes Knowledge and Academic Self-efficacy in Nursing Students (고성능 인체 환자 모형을 활용한 저혈당 시나리오 기반의 시뮬레이션 교육이 간호대학생의 당뇨병 지식과 학업적 자기효능감 습득과 지속성에 미치는 효과)

  • Kim, Jiyoung;Heo, Narae
    • The Journal of Korean Academic Society of Nursing Education
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    • v.23 no.3
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    • pp.319-329
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    • 2017
  • Purpose: This study evaluated the acquisition and retention effects on diabetes knowledge and academic self-efficacy of patient simulation-based hypoglycemia scenario using a high-fidelity simulator. Methods: A nonequivalent control group pretest/posttest repeated measures quasi-experimental design determined if nursing simulation using a high-fidelity simulator helps students acquire and retain diabetes knowledge and academic self-efficacy. A total of 101 nursing students from two universities participated in this study, comprising the experimental and control groups. The experimental group (n=52) at a university in S city comprised participants in an adult nursing class, nursing practicum, and simulation education. The control group (n=49) at a university in C city participated in an adult nursing class and nursing practicum without simulation education. Results: The experimental group had statistically significant group-time interaction effects on diabetes knowledge (p=.044) and self-confidence (p<.001) of academic self-efficacy compared to the control group. Conclusion: The results indicated that the patient simulation-based hypoglycemia scenario using a high-fidelity simulator applied to nursing education is useful in encouraging nursing students to engage in strategies with acquisition and retention effects, enhancing their diabetes knowledge and self-confidence of academic self-efficacy. Therefore, educators should use simulation programs effectively with nursing classes and practicum to enhance the effects of nursing competencies.

Analysis on Types of Errors in Learning about Control Structures of Programming using Flowchart (순서도를 활용한 프로그래밍 제어 구조 학습에 나타난 오류 유형 분석)

  • Choe, Hyunjong
    • The Journal of Korean Association of Computer Education
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    • v.19 no.1
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    • pp.101-109
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    • 2016
  • Designing algorithms is a very important learning process in computational thinking education because it requires learner's logical and procedural thinking. But the case studies that have topics of algorithms learning and students' types of errors in learning algorithms are not enough. So the purpose of this study is to analyze students' errors that discovered in the process of learning three control structures of programming using flowchart and provide types of errors in designing algorithms. Results about tests of three types of control structures in university student's algorithms learning class showed different cases of types of errors; types of sequential control error are not presented in the class, types of conditional control error are presented in the case of setting the conditions of nested conditional control, and types of iterative control are showed in the many cases of iterative conditions, statements of single and nested iterative control structure. The results of study will be a good case study about teaching designing algorithms of computational thinking education in elementary, secondary school and university.

Development and Underdevelopment: Southeast Asian Studies in Singapore (발전 속의 저발전: 싱가포르 동남아연구 발전사)

  • Lee, Sang Kook
    • The Southeast Asian review
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    • v.20 no.3
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    • pp.101-145
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    • 2010
  • Southeast Asian studies in Singapore has had a problem with locating local scholarship from the outset. The initiation of English-track scholarship was done by British scholars while Chinese scholars in the beginning were not considered as local people but as sojourners who identified China as their fatherland. If the latter had successfully located their scholarship in the post-colonial environment of Singapore, the job of identifying local scholarship would have been much easier. Indeed, for some time in the 1960s-70s, there existed a relatively strong local scholarship that was based mainly at Nanyang University. However, they became marginalized as English became dominant not just in education but also in Singapore society. Unlike the Chinese-track scholarship, the English-track scholarship in Singapore has developed greatly over the years. The establishment of ISEAS was the crystallized form of Singapore's endeavors to develop a Singapore brand of Southeast Asian studies to the world. Alongside ISEAS, NUS has carried on the English-track Southeast Asian studies and become a world-class university in this academic field. The formation of the Southeast Asian Programme and ARI marked a cornerstone for NUS in advancing Southeast Asian studies. However, Singaporean scholarship continues to be weak in comparison to foreign scholarship. In the absence of strong local scholarship, the typical way in which Singapore has chosen to develop Southeast Asian studies has been to establish world-class institutes and to bring in foreign talents. This strategy has perhaps paid off since it has situated Singapore as the prime place where scholars gather, information goes around and quality research outcomes are published. However, whether or not it has strengthened local scholarship remains a controversial issue. The dominant contribution of foreign scholars continues to pose the problem of whether the ownership of Southeast Asian studies in Singapore belongs to Singapore itself. The identification of scholarship in Singapore is an unsettled matter.

A Study on the Current education of Oriental Medical Classics in Korea;A Study focused on Hwangje-Naegyeong(黃帝內經) (원전학 교육 현황에 관한 연구;"황제내경(黃帝內經)"을 중심으로)

  • Kim, Do-Hoon
    • Journal of Korean Medical classics
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    • v.19 no.4
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    • pp.101-112
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    • 2006
  • For the purpose of profound comprehension of the Current education of Oriental medical classics in Korea, I investigated the results of direct survey of the Current education of Oriental medical classics from each professor, and came to following conclusions. 1. The education of Oriental medical classics mainly lasts for 2 years. Students have average 6.59 hours of lecture every week. The rate of full service professor reaches 74.4%. But the department of Oriental medical classics in every college takes charge of many subjects which are related to Oriental medical classics, so the appointment of large number of full service professor is essential for the improvement of educational environment of Oriental medical classics. 2. After the publishing of the common textbook of Oriental medical classics, it gradually became the main textbook. But it is necessary that we should complement the textbook and it is also necessary that we should develop another textbook for Nangyeong(難經). 3. Most professors emphasize on the cultivation of the ability which enables Oriental medical thought through precise comprehension of original text. By the way, for the purpose of motivation of studying Oriental medical classics, it is necessary to develop a lecture which is related to clinical medicine. From the same context it is also necessary to read clinical original text such as Dongui-bogam(東醫寶鑑) and Uihakimmun(醫學入門) in class.

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Effects of Practical Problem-Based Home Economics Instruction Perceived by Both Female and Male High School Students. (남녀 고등학생이 인식안 실천적 문제 중심 가정과 수업의 효과)

  • 윤복순
    • Journal of the Korean Home Economics Association
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    • v.36 no.5
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    • pp.151-166
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    • 1998
  • The purpose of the study was to determine the effect of a practical problem-based instruction(PPBHEI) perceived by female and male high school students. One Group post-test only design was used in this quasiexperimental study. The experimental group of the study was 101(67 male and 34 female) second grade students of a high school in Kyung Kee Area. The Practical Problem-Based Home Economics Instruction had been conducted to the group during the 14th weeks of 1997 spring semester. Post-test including the two parts was conducted at the end of the semester. The instrument of the study was developed and used, based on the previous literature after testing validity and reliability by the researcher. The questionnaire was composed of open-ended question. The data of this study were analyzed by content analysis. The results were as follows: 1)both female and male respondents indicated PPBHEI helped to improve their friendships(93.1%), expression skills(69.3%), their thinking ability(82.1%), and problem soiving skills(76.2%); 2)both female and male respondents indicated that problems of PPBHEI were that a few students didn't like joining the class and classroom space was too small; and 3)half of students(52.3%) perceived the Practical Problem-Based Home Economics Instruction related to student achievement.

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Fitness of Diet-Related Factors Explaining the Self-Rated Health (SRH) in Rural Older Adults with Discriminant Analysis (판별분석에 의한 주관적 건강 평가에 영향을 미치는 식사관련 요인의 적합성 검증)

  • Cha, Myeong-Hwa;Heo, Seong-Ja;Youn, Hyun-Sook
    • Korean Journal of Community Nutrition
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    • v.13 no.5
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    • pp.723-732
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    • 2008
  • The purpose of this study was to identify the influence of diet related factors, such as diet behaviors, food intake, and nutrient intakes, on self-rated health (SRH). Also, in order to determine fitness of classification for SRH reflecting diet related factors, this study surveyed older adults in Gyeongnam province. A total of 101 responses were collected using the interview survey method. The self- rated health of rural older adults was poor as reported by 49.5%. The level of self-rated health was found to be related to the frequencies of coffee and snack, use of sugar and vegetable in diet, the amount of total food intake, and cholesterol intake. The result of discriminant analysis, which was conducted to assess the adequacy of SRH classification and to determine the class of observation, showed frequency of coffee and use of vegetable in diet among 47 variables as predictive variables for explaining SRH. The fitness of self-rated health function was high to 47.7%. Therefore, diet-related factors were ascertained to be important variables to predict SRH.

Connection Algorithm Proposal of Real Time Digital Simulator with Miniaturized HTS SMES (소형 HTS SMES와 실시간 전력계통 시뮬레이터의 연계 알고리즘 제안)

  • Kim, A-Rong;Kim, Gyeong-Hun;Kim, Kwang-Min;Park, Min-Won;Yu, In-Keun;Sim, Ki-Deok;Kim, Seok-Ho;Seong, Ki-Chul;Park, Young-Il;Kim, Jin-Geun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.1
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    • pp.96-101
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    • 2010
  • Superconducting Magnetic Energy Storage (SMES) system is one of the key technologies to overcome the voltage sag, swell, interruption and frequency fluctuation by fast response speed of current charge and discharge. In order to evaluate the characteristics of over mega joule class grid connected High Temperature Superconducting (HTS) SMES system, the authors proposed an algorithm by which the SMES coil could be connected to the Real Time Digital Simulator (RTDS). Using the proposed algorithm, users can perform the simulation of voltage sag and frequency stabilization with a real SMES coil in real time and easily change the capacity of SMES system as much as they need. To demonstrate the algorithm, real charge and discharge circuit and active load were manufactured and experimented. The results show that the current from real system was well amplified and applied to the current source of simulation circuit in real time.