• Korean Journal of Child Studies
• /
• v.31 no.1
• /
• pp.283-300
• /
• 2010

This paper investigated the effect of music and science integrated activities using instruments designed to test both musical concept and science inquiry process skills of children. The subjects of this study consisted of two classes of children aged 5 at H Kindergarten in Busan city. This study involved a class of 31 children using a music and science integrated curriculum as the experimental group and another class of 32 children using a traditional music and science curriculum as the control group. The integrated activities were used 12 times over a 6-week period. A test was taken to evaluate the effects of the integrated activities on the children's understanding on seven sub-categories of musical concepts and six sub-categories of science inquiry process skills. The results were that the experimental group showed significantly higher improvements in all subcategories of musical concept and science inquiry process skills, compared to the control group. Based on these results, we concluded that these integrated activities were effective in the development of both musical concepts and the science inquiry process skills of children.

• Proceedings of the Safety Management and Science Conference
• /
• 2005.11a
• /
• pp.493-504
• /
• 2005

Statistical Process Control and Process Adjustment theory is gaining recognition in the process industries where the process frequently experiences a shift mean. This paper aims to study, the theory difference between Statistical Process Control and Process Adjustment in simple terms and presents a case study that demonstrates successful integration of Statistical Process Control and Process Adjustment theory for a product in drifting industry.

• 한국생물공학회:학술대회논문집
• /
• 2003.10a
• /
• pp.207-207
• /
• 2003

• Journal of Korean Elementary Science Education
• /
• v.28 no.3
• /
• pp.229-244
• /
• 2009

This study was initiated to investigate sixth graders' gender characteristics in science problem solving process and thus find out the proper learning and teaching strategies for each gender. A total of 14 students, each of seven male and female students, were selected through three tests, including items of science knowledge, science inquiry, and creativity. Students were required to solve 26 items and to think aloud for researchers help understand how they thought in their problem solving process. Males and females showed some similarity and difference in four steps of problem solving process, understanding, planning, solving, and reviewing. We found gender differences in self-confidence of their answer. This study is expected to help develop teachers' differential teaching strategy for male and female students' science problem solving.

• Proceedings of the Korean Powder Metallurgy Institute Conference
• /
• 2006.09a
• /
• pp.366-367
• /
• 2006

Carbon nanotubes (CNTs) have attracted remarkable attention as reinforcement for composites owing to their outstanding mechanical properties. The CNT/Cu nanocomposite is fabricated by a novel fabrication process named molecular level process. The novel process for fabricating CNT/Cu composite powders involves suspending CNTs in a solvent by surface functionalization, mixing Cu ions with CNT suspension, drying, calcination and reduction. The molecular level process produces CNT/Cu composite powders whereby the CNTs are homogeneously implanted within Cu powders. The mechanical properties of CNT/Cu nanocomposite, consolidated by spark plasma sintering of CNT/Cu composite powders, shows about 3 times higher strength and 2 times higher Young's modulus than those of Cu matrix.

• Journal of Korean Elementary Science Education
• /
• v.30 no.4
• /
• pp.624-633
• /
• 2011

The purpose of this study was to compare problem finding ability, creative thinking ability, creative tendency, and science process skill between the scientifically gifted students and the general students. For this study, problem finding ability test, integrating creativity test, and science process skill test were conducted to the elementary gifted students (n=95) in science and the general students (n=149) at the same school district. The results of this study were as follows: The mean scores of problem finding, creative thinking, creative tendency, and science process skill of the gifted students were statistically higher than the general students. The problem finding ability had partially weak correlation with sub-domains of the creative thinking ability, creative tendency, and science process skill. Findings suggest that there are needs of further study about factors affecting problem finding and considering the degree of structure of problem situation.

• Journal of Korean Elementary Science Education
• /
• v.30 no.4
• /
• pp.634-645
• /
• 2011

The purpose of this study was to investigate the analysis on the pattern and proposition process of science inquiry problems proposed by elementary school general students and science-gifted ones. The science inquiry problems were composed of one quantitative problem and one qualitative problem. To conduct this study, general students and science-gifted ones of grade 4 and 5 in elementary schools were selected. The results of this study were as follows. In both quantitative and qualitative problem, most of the students, including all the sciencegifted students and general ones, used N-IP pattern and S2 proposition process strategy to propose inquiry problems. In the relationship between proposed problem and proposition process strategy, when using S2 strategy, N-IP problems were chiefly proposed. And when using S2, S3 strategies, more patterns of inquiry problems were generated than using any other strategies. Drawing proposition processes of inquiry problem into map, science-gifted students used much more proposition process strategies than general ones.

• Journal of the Korean earth science society
• /
• v.26 no.6
• /
• pp.501-510
• /
• 2005

An analysis was done on the “inquiry sections” of Earth Science chapters of 10th grade science textbooks. The Inquiry sections were classified into different types and the frequencies of basic process skills, integrated process skills, and inquiry activities were measured in section to find out whether they sufficiently satisfy the requirements based on the 7th National Curriculum. The number of selected science textbooks that have been used in high school for this study were eleven. The number of inquiry tasks were on an average of 24.0. The types of inquiry sections and the elements of basic and integrated process skills were different in every textbooks. The number of inquiry activities were also different and analyzed more than those presented. They were not integrated activities but presented as scientific process skills. The basic process skills and integrated process skills presented in textbooks were $16\%\;and\;77.2\%$, respectively. However, the distribution of two kinds of process skills were analyzed to be $45.6\%\;and\;55.4\%$, respectively. In the process skills, the frequencies of inferring $(49.5\%)$ and data interpretation (68.7%) were the highest; however, the other process skills including recognizing problem, formulating hypothesis and generalization were not even presented in any of the text books. Due to the lack of the definitions of Science process skills and inquiry activities in the 7th National Curriculum, each text book defined these terms differently. It suggests that the meaning of inquiry, science process skills, and inquiry activities should be operationally defined in the national curriculum and the criteria for construction of inquiry activities are required.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.04a
• /
• pp.16-18
• /
• 2004

Single system image(SSI) have been the mainstay high-performance computing for many years. SSI requires the integration and aggregation of all types of resources in a cluster to present a single interface to users. In this paper, we describe a cluster computing architecture with the concept of single process space(SPS) where all processes share a uniform process identification scheme. With SPS, a process on any node can create child process on the same or different node or communicate with any other process on a remote node, as if they are on a single node. For this purpose, SPS is built with the support of unique cluster-wide pid, signal forwarding, and remote fork. We propose a novel design of SPS cluster which addresses the scalability and flexibility problem of traditional clusterwidely unique pid implementation by using blocked pid assignment. We have implemented this new design of SPS cluster, and we demonstrate its performance by comparing it to Beowulf distributed process space. Benchmark performance results show that our design of SPS cluster realized both scalability and flexibility that are essential to building SPS cluster.

• Journal of Powder Materials
• /
• v.31 no.3
• /
• pp.243-254
• /
• 2024

High-entropy alloys (HEAs) have been reported to have better properties than conventional materials; however, they are more expensive due to the high cost of their main components. Therefore, research is needed to reduce manufacturing costs. In this study, CoCrFeMnNi HEAs were prepared using metal injection molding (MIM), which is a powder metallurgy process that involves less material waste than machining process. Although the MIM-processed samples were in the face-centered cubic (FCC) phase, porosity remained after sintering at 1200℃, 1250℃, and 1275℃. In this study, the hot isostatic pressing (HIP) process, which considers both temperature (1150℃) and pressure (150 MPa), was adopted to improve the quality of the MIM samples. Although the hardness of the HIP-treated samples decreased slightly and the Mn composition was significantly reduced, the process effectively eliminated many pores that remained after the 1275℃ MIM process. The HIP process can improve the quality of the alloy.