• Title/Summary/Keyword: method of science

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The Effect of Science Creative Problem Solving Ability and Science Process Skills Using Free Inquiry Method (자유탐구 기법을 활용한 수업이 과학 창의적 문제해결력 및 과학적 탐구능력에 미치는 효과)

  • Lee, Yong-Seob;Kim, Soon-Shik;Lee, Sang-Gyun
    • Journal of the Korean Society of Earth Science Education
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    • v.4 no.2
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    • pp.116-125
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    • 2011
  • The purpose of this study is to make a Result analysis on the Free Inquiry Method of Elementary school student. Also, this study investigates how free inquiry activities effect the science creative problem solving ability and science process skills of Elementary school student. For this study 150, third year, elementary School students from Busan City were selected. The Inquiry examined the effectiveness of each of the following free inquiry methods: the Program Based Learning method, the Project method, the Independent Investigation Method, the Small Group Inquiry Method, and the Science Notebooks Method. The students were divided into groups in which they incorporated the respective methods into their practice. Test showed the following results: First, the Science Notebooks Method activities proved to be much more effective than the Program Based Learning method, the Project method, the Independent Investigation Method, the Small Group Inquiry Method, and the Science Notebooks Method in terms of developing on science creative problem solving ability. Second, the Project method activities proved to be much more effective than the Program Based Learning method, the Independent Investigation Method, the Small Group Inquiry Method, the Science Notebooks Method in terms of developing on science process skills.

Effectiveness of Excel-based Teaching Method for Management Science (엑셀을 활용한 경영과학 강의방식의 효과에 관한 연구)

  • Chung Ki-Ho
    • Korean Management Science Review
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    • v.22 no.2
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    • pp.1-12
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    • 2005
  • New method has been widely used for teaching Management Science since the mid of 1990s. The new teaching method is distinguished from traditional method in several aspects. The mowt distintion of the new method is that Excel based approach is used in order to model and analyze quantitative problems. Due to the introduction of Excel based teaching method model formulation and interpretation is more emphasized than algorithms. By using this new method students are expected to be more interested in Management Science class and easily use several Management Science techniques in real world problems. Though Excel based teaching method has become more prevalent, there exist no empirical research to analyze the effectiveness of Excel based teaching method. This paper will empirically analyze how effective Excel based teaching method is. For this purpose survey data are collected fro professors teaching Management Science and analyzed by using t-test.

The Effects of Science Academic Achievement and Scientific Attitudes on 'The Earth and Moon' Using Small Inquiry Method (소집단 탐구기법을 활용한 '지구와 달의 운동' 단원 수업이 과학학업성취도 및 과학적 태도에 미치는 효과)

  • Lee, Yongseob;Kim, Yoonkyung
    • Journal of the Korean Society of Earth Science Education
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    • v.9 no.1
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    • pp.88-96
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    • 2016
  • The purpose of this study is to examine the effects of Jigsaw small inquiry method on science academic achievement and scientific attitudes. For this study, two classes of six graders were divided into a research group and a comparative group. The classes were pre-tested in order to ensure the same standard. The research group had the science class with Jigsaw small inquiry method, and the comparative group had the class with a teacher centered lectures for 12 classes for 12 weeks. The Jigsaw small inquiry method was focused on the introduction stage, the whole group activities, professional group activities, restart the whole group activities, supplementary structured study guide, results announced, and excellent group rewards. To prove the effects of this study, science learning motivation was split up based on the attention power, relation, confidence, and sense of satisfaction. The results of this study are as follows. First, Jigsaw small inquiry method is effective in science academic achievement. Second, Jigsaw small inquiry method is effective in scientific attitudes. Also, Jigsaw small inquiry method was approved by students. Consequently, Jigsaw small inquiry method had the great effects on developing science academic achievement for the elementary science class. That means the science class with Jigsaw small inquiry method has potential to develop science academic achievement and scientific attitudes.

The Preference and Result Analysis on Free Inquiry Method of Pre-service Elementary School Teachers (초등 예비 교사의 자유탐구 방법에 대한 선호도 및 실행 결과 분석)

  • Lee, Yong-Seob
    • Journal of Korean Elementary Science Education
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    • v.28 no.4
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    • pp.440-449
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    • 2009
  • The purpose of this study is to make a preference and result analysis on the free inquiry method of pre-service elementary school teachers. Also, this study investigates how free inquiry activities effect the science-related attitudes and the self-directed learning characteristics of pre-service elementary school teachers. For this study 76, second year, science education pre-service elementary school teachers from Busan National University of education were selected. The inquiry examined the effectiveness of each of the following teaching methods: the IIM method, the PBL method, the PROJECT method, and the small group inquiry method. The students were divided into groups in which they incorporated the respective methods into their practice. In conclusion, the IIM free inquiry activities proved to be much more effective than the PBL method, the PROJECT method, and the small group inquire method in terms of developing self-directed learning characteristics and science related attitudes at the significant difference of p=0.05.

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The Effect of Elementary Science Class with Name Card Method on Learning Motivation and Academic Achievement of Elementary Students (Name Card 기법을 적용한 초등과학 수업이 초등학생의 과학 학습 동기 및 학업성취도에 미치는 영향)

  • Yang, Seung-Won;Bae, Jinho;So, Keum-Hyun
    • Journal of Korean Elementary Science Education
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    • v.33 no.1
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    • pp.129-139
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    • 2014
  • This study was conducted to examine the effect of elementary science class using name card method on scientific learning motivation and academic achievement of elementary students. Two sixth grade classes were divided into experimental group and comparison group to treat the experimental group with elementary science class using name card method. General class according to teacher manual was implemented for the comparison group. Elementary science class applying name card method was conducted for 10 sessions throughout the experimental period of 8 weeks. The results of this study were as follows. First, elementary science class with name card method was effective in improving scientific learning motivation. Second, elementary science class with name card method had significant effect on improvement of scientific learning academic achievement. The study results showed that elementary science class with name card method was effective for scientific learning motivation and academic achievement of elementary students.

A Freedom Inquiry Method by Revised Science Curriculum in 2007 (2007년 개정 과학과 교육과정에서 자유탐구 방안)

  • Lee, Yong-Seob;Park, Mi-Jin
    • Journal of the Korean Society of Earth Science Education
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    • v.3 no.1
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    • pp.65-75
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    • 2010
  • The purpose of this study is to present a Freedom Inquiry Method by Revised Science Curriculum in 2007. This study introduced IIM(Independent Inquiry Method), PBL(Problem Based Learning), Small Inquiry Method, Science Notebooks, Project Learning Method about Freedom Inquiry Method. The results of this study are as follows: First, IIM(Independent Inquiry Method) is studying method in the inquiry process center. The inquiry process is composed of total 9 phases, inquiry subject really it is, detailed aim deciding, information searching, it searches, quest result it arranges, aim evaluation, the report making, it announces, it evaluates, it is become accomplished. Second, It is a studying method which it starts with the problem which is Problem Based Learning, study atmosphere creation phase, problematic presentation phase and sleep static problem solving the phase which it attempts, it is become accomplished with autonomous studying phase, coordinated studying and discussion studying phase, discussion resultant announcement studying phase, arrangement and evaluation. Third, Small Inquiry Method, Call it accomplishes the call grade of the students among ourselves 4~8 people degree where only the quest learning capability is similar within class. Also interaction and coordinated function of the members between it leads and the subject which is given in the group it cooperates and it solves with it is a quest method which arrives to aim of commonness. This method divides on a large scale in three parts, it becomes accomplished in programming phase, quest accomplishment and resultant announcement. Fourth, Science Notebooks learns a scientific contents and a scientific quest function and the possibility of decreasing in order to be, from the fact that the help which it understands. This planing, data searching, it searches, becomes accomplished with resultant arrangement, announcement and evaluation. Fifth, The Project Learning Method the studying person oneself studying contents, it establishes a plan and it collects it accomplishes process of etc. it evaluates it leads and a subject and information and with real life it is a method which it studies naturally from the learning environment inside which is similar. This is preliminary phase, project start, project activity and project arrangement.

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A sampling and estimation method for monitoring poultry red mite (Dermanyssus gallinae) infestation on caged-layer poultry farms

  • Oh, Sang-Ik;Park, Ki-Tae;Jung, Younghun;Do, Yoon Jung;Choe, Changyong;Cho, Ara;Kim, Suhee;Yoo, Jae Gyu
    • Journal of Veterinary Science
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    • v.21 no.3
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    • pp.41.1-41.12
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    • 2020
  • Background: The poultry red mite, Dermanyssus gallinae, is a serious problem in the laying hen industry worldwide. Currently, the foremost control method for D. gallinae is the implementation of integrated pest management, the effective application of which necessitates a precise monitoring method. Objectives: The aim of the study was to propose an accurate monitoring method with a reliable protocol for caged-layer poultry farms, and to suggest an objective classification for assessing D. gallinae infestation on caged-layer poultry farms according to the number of mites collected using the developed monitoring method. Methods: We compared the numbers of mites collected from corrugated cardboard traps, regarding with length of sampling periods, sampling sites on cage, and sampling positions in farm buildings. The study also compared the mean numbers of mites collected by the developed method with the infestation levels using by the conventional monitoring methods in 37 caged-layer farm buildings. Results: The statistical validation provided the suitable monitoring method that the traps were installed for 2 days on feed boxes at 27 sampling points which included three vertical levels across nine equally divided zones of farms. Using this monitoring method, the D. gallinae infestation level can be assessed objectively on caged-layer poultry farms. Moreover, the method is more sensitive than the conventional method in detecting very small populations of mites. Conclusions: This method can be used to identify the initial stages of D. gallinae infestation in the caged-layer poultry farms, and therefore, will contribute to establishment of effective control strategies for this mite.

Fast Iterative Solving Method of Fuzzy Relational Equation and its Application to Image Compression/Reconstruction

  • Nobuhara, Hajime;Takama, Yasufumi;Hirota, Kaoru
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.2 no.1
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    • pp.38-42
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    • 2002
  • A fast iterative solving method of fuzzy relational equation is proposed. It is derived by eliminating a redundant comparison process in the conventional iterative solving method (Pedrycz, 1983). The proposed method is applied to image reconstruction, and confirmed that the computation time is decreased to 1 / 40 with the compression rate of 0.0625. Furthermore, in order to make any initial solution converge on a reconstructed image with a good quality, a new cost function is proposed. Under the condition that the compression rate is 0.0625, it is confirmed that the root mean square error of the proposed method decreases to 27.34% and 86.27% compared with those of the conventional iterative method and a non iterative image reconstruction method, respectively.

Comparative study of color reproducibility of zirconia using a dipping method and coating method (도포법 및 침전법을 이용한 지르코니아의 색조 재현성 비교 연구)

  • Lee, Hee-Jung;Kim, Jae-Hong;Kim, Woong-Chul;Kim, Ji-Hwan;Kim, Hae-Young
    • Journal of Technologic Dentistry
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    • v.35 no.3
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    • pp.185-192
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    • 2013
  • Purpose: The aim of this study was to compare with color reproducibility of the coating method and dipping method using a colour liquid. Methods: Two groups of square-shaped specimens ($10mm{\times}10mm$ in diameter, 1.5mm thickness) were prepared for analysis(n=15/group). The CM(Coating Method) group was fabricated as full zirconia specimens with the coating coloring method and Group DM(Dipping Method) was prepared as specimens of 0.7 mm-thick zirconia plate using the dipping coloring method and veneered with 0.8mm-thick porcelain. Color parameters were measured with ShadeEye $NCC^{(R)}$ spectrophotometer and color differences were calculated using the equation ${\Delta}E^*= \{({\Delta}L^*)^2+({\Delta}a^*)^2+({\Delta}b^*)^2\}^{1/2}$. Non-parametric statistical methods, the Mann-Whitney test, and the Kruskal-Wallis test were used to analyze the data. Type one error rate was set at 0.05. Results: Color difference values larger than 7 were observed between specimens with the coating method and the dipping method, which were detectable difference in a clinical setting. Conclusion: Cautious application of the coating coloring method in a clinical setting and further researches to standardize the coating method are needed.

Effect of Preantral Follicle Isolation Technique on In Vitro Follicular Development in Mice

  • Lim, Hyun-Joo;Kim, Dong-Hoon;Im, Gi-Sun;Park, Sung-Jai;Son, Jun-Kyu;Baek, Kwang-Soo;Kwon, Eung-Gi
    • Journal of Embryo Transfer
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    • v.26 no.4
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    • pp.223-227
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    • 2011
  • The objective of this study was to compare of different isolation method of mouse preantral follicles, and to examine in vitro development of mouse preantral follicles isolated by different method. Preantral follicles were mechanically or enzymatically extracted from mouse ovaries. Mechanical isolation method used fine gauge needles and enzymatic method of isolating follicles used collagenase. The recovered preantral follicles were cultured for 10 days in alpha-minimal essential medium (${\alpha}$-MEM) + 5% FBS + Insulin-Transferrin-Selenium (ITS) + 100 mIU/ml FSH. The collected primary follicles by enzymatic treatment were higher than mechanical method. Others stage preantral follicle by mechanical isolation were higher than enzymatic method. After 10 days of culture, no statistical differences were shown in survival rates of preantral follicle among the 2 culture groups. The metaphase II rates of the oocytes were significantly higher (p<0.05) in mechanical method (17.8%) than in enzymatic method (5.1%). These results suggest that the isolation method of choice depends on the target stage preantral follicles and mechanical isolation is an optimal method of preantral folliclesin a culture of mouse preantral follicle.