• 한국지구과학회지
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• 제23권2호
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• pp.147-153
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• 2002

Reasonable and reliable assessment method is one of the most important issues in science education, Partial credits method is an effective tool for assessing students' science inquiry problem solving. The purposes of this study were to classify the Problem solving types based on the analysis of the thinking Process, and how much the related science concept and the science process skills were used in solving science inquiry problems, and to describe the possibility and rationality of the assessment method that gives partial credit 128 high school seniors were selected and their answers were analyzed to identify science concepts they used to solve each problem, and the result was used as the criterion in the scientific concept test development. Also, to study the science inquiry problem solving type, 152 high school seniors were selected, and protocols were made from audio-taped data of their problem solving process through a think-aloud method and retrospective interviews. In order to get a raw data needed in statistical comparison of reliability, discrimination and the difficulty of the test and the production of the regression equation that determines the ratio of partial credit, 640 students were selected and they were given a science inquiry problem test, a science process skills test, and a scientific concept test. Research result suggested it is more reasonable and reliable to switch to the assessment method that applies partial credit to different problem solving types based on the analysis of the thinking process in problem solving process, instead of the dichotomous credit method.

• Journal of the Korean Data and Information Science Society
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• 제8권2호
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• pp.135-141
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• 1997

In this paper, it is investigated the properties of the transformed geometric Poisson process when the intensity function of the process is a distribution of the continuous random variable. If the intensity function of the transformed geometric Poisson process is a Pareto distribution then the transformed geometric Poisson process is a strongly P-process.

• 대한지구과학교육학회지
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• 제3권2호
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• pp.124-131
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• 2010

The purpose of this study is examine relationship of attribution styles and attitude toward Science and Science Process Skills of Science-gifted, to understand unique characteristics of the Science-gifted and to give useful information that can be use in develop special programs for the Science-gifted. The result of this study were as follows: First, there was no difference between genders. But there was a significant difference in attribution of luck. Second, there was a correlation between internal tendencies and Scientific attitude. Especially attribution of effort correlated with sub - constituent of Scientific attitude. Internal tendencies correlated with the Cognition in Scientific Professions that sub - constituent of the attitude toward Science. Third, There was a correlation between external tendencies and the interest activity in Science that sub - constituent of the attitude toward Science. There are correlations between sub - constituent of the attitude toward Science and sub - constituent of external tendencies that attribution of luck and interest in Scientific Professions, attribution of task difficulty and Cognition activity in Science. Fourth There was no correlation between Attribution styles and Science Process Skills. But Internal tendencies correlated with classification that sub - constituent of Science Process Skills. And classification correlated with attribution of ability that sub - constituent of external tendencies. Attribution of effort that sub - constituent of internal tendencies correlated with Science Process Skills.

• 한국과학교육학회지
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• 제28권2호
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• pp.180-185
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• 2008

본 연구의 목적은 초등 예비교사들을 대상으로, 과학에 대한 태도와 탐구 능력을 검사하여, 성별과 고등학교 때의 계열에 따른 차이점을 분석하고 과학에 대한 태도와 탐구 능력의 상관관계를 알아보는 것이다. 과학에 대한 태도 검사 도구는 SAS를 이용하였으며 탐구 능력 검사 도구는 통합 탐구 능력을 측정하는 TIPS II를 사용하였다. 연구 결과는 다음과 같다, 첫째, 초등 예비교사들의 성별에 따른 과학에 대한 태도와 탐구 능력은, 전체적으로 보아 유의미하지 않았으며 초중고 학생들을 대상으로 한 선행 연구들의 결과와 일치하지 않았다. 둘째, 초등 예비교사들의 고등학교 계열에 따른 과학에 대한 태도는 인문계열의 초등 예비교사들이 자연계열 초등 예비교사보다 긍정적이었으며 탐구 능력은 자연계열 초등 예비교사들이 부분적으로 우수하였다. 이러한 결과도 초중고 학생들을 대상으로 한 선행 연구 결과들과는 일치하지 않는 것이다. 셋째, 초등 예비교사들의 과학에 대한 태도와 탐구 능력은 유의미한 상관관계가 있었다. 하지만 초중고 학생들을 대상으로 한 선행연구와는 달리, 과학에 대한 태도의 특정 영역만이 탐구 능력과 유의미한 상관관계를 보였다. 이런 연구 결과들을 볼 때, 초중고 학생들을 대상으로 이루어진 선행 연구들의 결과를 초등 예비교사들에게 그대로 적용하는 것은 적절하지 못하며, 초등 교사 양성 기관에서는 교육 대상의 특수성을 고려하여 과학교육을 지도할 필요가 있다.

• 대한지구과학교육학회지
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• 제4권3호
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• pp.267-277
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• 2011

The purpose of this study is to examine the effect of IIM-based science writhing lesson on the science process skills and self-directed learning in elementary science-gifted students. To verify research problems, the subjects of this study were forth-grade students selected from one classes of an elementary science-gifted class in Busan National Universty of education : the research group is composed of twenty students who were participated in IIM-based science writing lessons. During 12 weeks, the IIM-based science writing lessons was executed in the reasearch group. Post-test showed following results: First, the research group showed a significant improvement in the science process skill. We look into detailly this, the research group showed a significant improvement in the basis science skill. The sub-factor 'expectation' of the science process skill effects a significant improvement. Second, the research group showed a significant improvement in the self-directed learning. In conclusion, IIM-based science writing lesson was more effective on science process skill and self-directed learning. However, since the study has a limit on an object of the study and the applied program, the additional studies need to be conducted with an extended comparative group and program.

• 한국분말재료학회지
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• 제31권2호
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• pp.137-145
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• 2024

In order to predict the process window of laser powder bed fusion (LPBF) for printing metallic components, the calculation of volumetric energy density (VED) has been widely calculated for controlling process parameters. However, because it is assumed that the process parameters contribute equally to heat input, the VED still has limitation for predicting the process window of LPBF-processed materials. In this study, an explainable machine learning (xML) approach was adopted to predict and understand the contribution of each process parameter to defect evolution in Ti alloys in the LPBF process. Various ML models were trained, and the Shapley additive explanation method was adopted to quantify the importance of each process parameter. This study can offer effective guidelines for fine-tuning process parameters to fabricate high-quality products using LPBF.

• 한국과학교육학회지
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• 제25권5호
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• pp.624-633
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• 2005

본 연구는 그래프 능력과 과학 탐구 능력 및 과학 학업 성취도의 상관 관계를 알아본 것이다. 그래프 능력과 과학 탐구 능력인 정적인 .41의 상관을 보였으며 이러한 결과는 선행연구의 결과들을 지지하는 것이다. 또한 그래프 능력은 과학 학업 성취도와 거의 통계적으로 상관이 없는 것으로 밝혀졌다. 그래프는 과학 학습에서 중요한 의사소통의 도구이다. 또한 그래프 능력은 과학 탐구 능력과 어느 정도 상관관계도 보이고 있다. 따라서 고등학생들의 그래프 능력의 부족한 부분을 신장시켜 과학 학습에 장애가 되지 않도록 해야 될 것이다.

• 한국초등과학교육학회지:초등과학교육
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• 제31권4호
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• pp.490-500
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• 2012

This study was to examine elementary male and female students' spatial abilities, science process skills, and graph construction and interpretation abilities in order to understand the effect that their spatial abilities and science process skills would have on their graph abilities. To conduct this study, total 12 classes of 435 pupils, 6 classes each from grades 5 and 6 in elementary schools were selected for subjects. The number of male student was 207 and that of female one was 228 of them. And previous test papers of spatial abilities, of science process abilities, and of graph abilities were retouched and updated for reuse in new tests. The results of this study are briefed as follows: Firstly, when spatial abilities for male and female group were compared, female group showed a little higher rate of correct answering than male, but not providing statistically significant gap. Secondly, the science process skill tests revealed basic process skills of both groups were more excellent than their integrated process skills, while female group was found to have more correct answers than male, all of which were proving statistical distinction. Thirdly, of graphing skills for two groups, the graph interpretation skills turned out to be better than the graph construction skills, with female group scoring higher than male and with meaningful difference. Fourthly, both between spatial abilities and graph abilities, and between science process skills and graph abilities, static correlations existed with statistical meaning. In other words, those with higher spatial abilities or science process skills were to do better in constructing and interpreting graphs.

• 한국인지과학회:학술대회논문집
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• 한국인지과학회 2010년도 춘계학술대회
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• pp.42-47
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• 2010

Speech shares acoustic features with other sound-based processing, which makes it difficult to distinguish phonological process from acoustic process in speech processing. In this study, we examined the difference between acoustic process and phonological process during repetition tasks. By contrasting various stimuli in different lengths, we localized neural correlates of acoustic process within bilateral superior temporal gyrus, which was consistent with the previous studies. The activated patterns were widely overlapped between words and pseudowords, i.e., contents-free. In contrast, phonological process showed left-lateralized activation in middle temporal gyrus located at anterior temporal areas. It implies that phonological process is contents-specific as shown in our previous study, and at the same time, more language-specific. Thus, we suggest that phonological process is distinguished from acoustic process in that it is always accompanied with the obligatory access to available phonological codes, which can be an entry of the mental lexicon.

• 한국과학교육학회지
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• 제27권8호
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• pp.724-742
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• 2007

The purpose of this study was to develop a scientific inquiry model that makes scientific inquiry accessible to science teachers as well as students. To develop a scientific inquiry model, we investigated the research process demonstrated by ten scientists who were working at academic research institutions or industrial research institutions. We collected data through scientists' journal articles, lab meetings and seminars, and observation of their inquiry process. After we analyzed the scientists' inquiry strategies and processes of inquiry, we finally developed the Scientist's Methodology of Investigation Process model named SMIP. The SMIP model consists of four domains, 15 stages, and link questions, such as "if, why", and "how". The SMIP model stressed that inquiry process is a selective process rather than a linear or a circular process. Overall, these findings can have implication science educators in their attempt to design instruction to improve the scientific inquiry process.