• International Journal of Human Ecology
• /
• v.15 no.1
• /
• pp.23-37
• /
• 2014

This study critically appraised the accumulated articles based on the critical science perspective on Korea's home economics education. The 55 articles published from 1993 to 2011 were identified and placed into three categories: Critical science paradigm, practical problem-focused curriculum, and systems of action. The common result across categories was that some authors did not fully understand the concepts of practice, a practical problem-focused curriculum, the practical reasoning process, and the systems of action. A positive outcome of including a critical science perspective in the Korean national curriculum will be seen when systems supporting this perspective, such as those providing more specific information on a critical science perspective and the relevant textbook accreditation standards, are available. We present a proposal based on considerations of a national curriculum, teacher education, relevant philosophical perspectives, and classroom practice.

• Progress in Superconductivity and Cryogenics
• /
• v.14 no.2
• /
• pp.1-7
• /
• 2012

In this review paper, we report the characteristics of the critical current density in FeAs based superconductors which is newly discovered by Hosono group of Tokyo Institute of Technology on 2008. Since the many specimens in present stage are not single crystals, there are two kinds of critical current density observed in the specimens which are so-called local and global critical current densities. Therefore, it is necessary to evaluate both kinds of critical current densities. The history effect in which the global critical current density shows different values in increasing and decreasing magnetic field is also observed when the specimens have the local and the global critical current densities. The wire which critical current is 180 A is successfully developed with using the knowledge of abovementioned characteristics of two kinds of critical current densities and the history effect.

• Journal of The Korean Association For Science Education
• /
• v.17 no.2
• /
• pp.163-178
• /
• 1997

The purpose of this study is to investigate the effect of categorizing activities in lessons on improving critical thinking to meet energy environment issues in every day situation, supposing that there are not only scientific concepts but also critical thinking ability in scientific literacy to meet social controversies related with science intelligently. Categorizing Activity Program was developed and applied to the 10th grades(n=51) in Seoul for about one month. The program was consisted of two domains. They studied science concepts of various aspects of science, technology and society related with energy and environment in the first and second domain repectively, in the while, two critical tasks which include articles from newspapers and magazines were assigned to them for the development and evaluation of critical thinking abilities. The scores of critical thinking ability, the cognitive element, and critical thinking inclination, the affective element, were increased meaningfully(p<.05). In conclusion, categorizing activity as a strategy of concept attainment was effective in improving critical thinking for seeing various aspects with various view points needed in controversial issues related with energy and environment.

• Journal of Astronomy and Space Sciences
• /
• v.31 no.4
• /
• pp.285-294
• /
• 2014

The uneven mass distribution of the Moon highly perturbs the lunar spacecrafts. This uneven mass distribution leads to peculiar dynamical features of the lunar orbiters. The critical inclination is the value of inclination which keeps the deviation of the argument of pericentre from the initial values to be zero. Considerable investigations have been performed for critical inclination when the gravity field is assumed to be symmetric around the equator, namely for oblate gravity field to which Earth's satellites are most likely to be subjected. But in the case of a lunar orbiter, the gravity field of mass distribution is rather asymmetric, that is, sectorial, and tesseral, harmonic coefficients are big enough so they can't be neglected. In the present work, the effects of the first sectorial and tesseral harmonic coefficients in addition to the first zonal harmonic coefficients on the critical inclination of a lunar artificial satellite are investigated. The study is carried out using the Hamiltonian framework. The Hamiltonian of the problem is cconstructed and the short periodic terms are eliminated using Delaunay canonical variables. Considering the above perturbations, numerical simulations for a hypothetical lunar orbiter are presented. Finally, this study reveals that the critical inclination is quite different from the critical inclination of traditional sense and/or even has multiple solutions. Consequently, different families of critical inclination are obtained and analyzed.

• The Journal of the Convergence on Culture Technology
• /
• v.2 no.2
• /
• pp.9-15
• /
• 2016

Objectives : The purpose of this study to investigate the Critical Thinking disposition in Nursing College students and related to ability of basic nursing science. Methods : Data were collected from 36 students who were students belong to one of province University. The instrument used in this study was California Critical Thinking Disposition Inventory(CCTDI) by Facione & Facione. The instrument was composed of 7 sub-items, truth-seeking, analyticity, systematicity, open-mindness, critical thinking, self-confidence, inquisitiveness, and maturity. The data were analyzed by descriptive statistics, t-test, ANOVA, Pearson Correlations with SPSS 12.0. Results : The result of this study were as follow; The average of total score in critical thinking disposition was 44.8, which means middle level(below 40: low, above 50: high level). Maturity was the highest while open-mindness was the lowest with an average score 5.01. There was significant difference between critical thinking and basic nursing science grade while there was no difference between age, gender, and religion. There was strongly relation between critical thinking disposition and basic nursing science(F=2.84, p=.01). Conclusion : According to the results of this study, nursing curriculum should be considered critical thinking disposition.

• Korean Journal of Adult Nursing
• /
• v.21 no.1
• /
• pp.117-128
• /
• 2009

Purpose: The purposes of this study were as follows; 1) To review the definitions of critical thinking from various perspectives, 2) To examine the critical thinking measurements throughout nursing research, and 3) To review the nursing studies with regard to critical thinking. Methods: This study was a literature review with regard to the critical thinking in nursing in aspects of conceptual meaning, measurements, and research. Results: The definition of critical thinking in nursing included decision making in clinical setting, inference with logical construct to increase nursing quality, interpretation in the context, and evaluation. The critical thinking was a core concept, which meant not only simple nursing process, but included decision making ability. The critical thinking has been conceptualized by both critical thinking disposition and skill. However, there was no nursing specified critical thinking measurement. Critical thinking research has been conducted to describe critical thinking disposition and critical thinking, to determine relationships between critical thinking and clinical competency, and to evaluate the effectiveness of educational programs. Conclusion: The instruments for measuring critical thinking disposition and skill that contain cultural difference and clinical specificity need to be developed to measure critical thinking and increase it.

• Journal of the Korean Mathematical Society
• /
• v.51 no.1
• /
• pp.55-65
• /
• 2014

A graph G is called a fractional (g, f, n)-critical graph if any n vertices are removed from G, then the resulting graph admits a fractional (g, f)-factor. In this paper, we determine the new toughness condition for fractional (g, f, n)-critical graphs. It is proved that G is fractional (g, f, n)-critical if $t(G){\geq}\frac{b^2-1+bn}{a}$. This bound is sharp in some sense. Furthermore, the best toughness condition for fractional (a, b, n)-critical graphs is given.

• Progress in Superconductivity
• /
• v.1 no.1
• /
• pp.14-19
• /
• 1999

Measurements across single grain boundaries in YBCO thin films and bulk bicrystals have been used to demonstrate the influence of grain boundary structure on the critical current carried across the grain boundary. In particular, we show that one role of grain boundary structure is to change the degree of pinning along the boundary, thereby influencing the critical current. This effect can be used to explain the large difference in critical current density across grain boundaries in thin films compared to that for bulk bicrystal. These differences illustrate the distinction between the intrinsic mechanism of coupling across the grain boundary that determines the maximum possible critical current across a boundary and the measured critical current which is limited by dissipation due to the motion of vortices.

• Journal of Korean Academy of Nursing
• /
• v.35 no.2
• /
• pp.382-389
• /
• 2005

Purpose: This longitudinal study was done to investigate critical thinking dispositions and critical thinking skills of nursing students enrolled in a 4-year baccalaureate program at a university in Korea. Method: The study used a longitudinal design. A convenience sample of 32 nursing students who were completing their 1st, 2nd, 3rd, and 4th year in a baccalaureate program at a selected university was included. The subjects completed the California Critical Thinking Dispositions Inventory (CCTDI), the California Critical Thinking Skill Test (CCTST), and a demographic questionnaire. Data was analyzed by descriptive statistics, repeated ANOVA, adjusted p-values, and Pearson's correlation coefficient with SAS 8.12. Results: There was statistically significant improvement according to academic year in the CCTDI total mean score (F=7.54, p= .0001) and subscales of Open-mindedness, Self-confidence, and Maturity. Contrarily, no statistically significant difference was found in the CCTST total mean score and subscales' score except Analysis. Conclusion: There is no significant correlation between critical thinking dispositions and skills, so it will be necessary to repeat a study like this, and the translated instruments should be modified by considering Korean culture.

• Journal of The Korean Association For Science Education
• /
• v.33 no.3
• /
• pp.569-580
• /
• 2013

This study examined how a Structured Reading Framework (SRF) is related to improving students' critical thinking ability in an argument-based inquiry approach, called the Science Writing Heuristic (SWH) approach. A total of 75 $8^{th}$ graders participated in the study, with 34 in the control group and 41 in the treatment group. The gains in critical thinking skills were compared between two groups, and relationships among the components of the reading framework and the critical thinking skills were explored at the group level. Result indicates that the treatment group who used the SRF had larger gains in critical thinking scores than control group who used the Original Reading Framework (ORF). In addition, results show that the correlations between Reading Framework (RF) components and critical thinking scores are statistically significant in the treatment group, while no correlations exist in the control group. It appears that using the SRF have an impact on developing students' critical thinking ability by providing a scaffold to assist argumentation practice.