• Journal of The Korean Association For Science Education
• /
• v.39 no.3
• /
• pp.415-426
• /
• 2019

This study compared the types and creativity level of scientific humors made by general and scientifically-gifted elementary students and their perceptions for educational benefits of making scientific humor. To do this, fifth graders (n=42) at an elementary school and fifth graders (n=38) at a gifted science education institutes in Seoul were selected. Scientific humors made by the students were analyzed and compared according to their types and creativity levels in scientific humor. The students' perceptions for educational benefits of making scientific humor were also analyzed and compared through a questionnaire. Analysis of the results reveal that there were some differences in the incidence rates in 'form' aspects (e.g., generative and descriptive forms) and 'content' aspects (e.g., inclusion of curriculum, scientific discipline, type in use of scientific knowledge, and nature of the situation) between the scientifically-gifted and general elementary students. The scientifically-gifted students also made more fluent, flexible, and original, but similarly useful scientific humors than the general students. Most of general and scientifically-gifted elementary students perceived positively the educational benefits of making scientific humor based on various cognitive and affective aspects.

• The Journal of the Korea Contents Association
• /
• v.8 no.12
• /
• pp.310-321
• /
• 2008

In the era of the Korean Empire, the identity of nation is not secured, therefore police system are also changed many times which has not an consistent directions. There are efforts of the ruler to reinforce or protect the nation against the invasion of outside power in the process, of course. But these efforts which reinforce the power of despotic emperor and modernize the nation are disappointed by the exclusive control of japan after the Russo-Japanese War in 1904. Therefore, japan disseized the police power of the Korean Empire in various forms(general police and military police). And these general police and military police are faced role conflict often, finally integrate to the military police, which take root the basic model of colonial police in 1910.

• Journal of Engineering Education Research
• /
• v.7 no.4
• /
• pp.38-44
• /
• 2004

The purpose of this study was to investigate the creative characteristics of the scientifically gifted university students and the relationship between creativity and introductory engineering courses. Torrance Test of Creative Thinking(TTCT) verbal and figural forms were administered to the two groups of students, scientifically gifted students and general students. The TTCT results and their first year grade point average(GPA) were analysed by t-test method and Pearson's correlation analysis. The major findings are, (1) general students group got higher scores in some factors such as flexibility of verbal form TTCT, but significant differences between the two groups were generally not found, and (2) the factors such as the originality of figural form TTCT showed small positive correlation with GPA, but the other factors were barely related to GPA.

• Honam Mathematical Journal
• /
• v.39 no.2
• /
• pp.199-216
• /
• 2017

In the paper [Y. B. Jun, B. Davvaz and A. Khan, Filters of ordered semigroups based on the fuzzy points, JIFS 24 (2013) 619-630]. Jun et al. discussed the notion of (${\in},{\in}{\vee}q_k$)-fuzzy left (resp., right) filters as a generalization of the notion of (${\in},{\in}{\vee}q$)-fuzzy left (resp., right) filters of ordered semigroups. In this article, we try to obtain a more general form that (${\in},{\in}{\vee}q_k$)-fuzzy left (resp., right) filters in ordered semigroups. The notion of (${\in},{\in}{\vee}q_k^{\delta}$)-fuzzy left (resp., right) filters is discussed, and several properties are investigated. Characterizations of an (${\in},{\in}{\vee}q_k^{\delta}$)-fuzzy left (resp., right) filter are established. A condition for an (${\in},{\in}{\vee}q_k^{\delta}$)-fuzzy left (resp., right) filter to be a fuzzy left (resp., right) filter is provided. The important achievement of the study with an (${\in},{\in}{\vee}q_k^{\delta}$)-fuzzy left (right) filter is that the notion of an (${\in},{\in}{\vee}q_k$)-fuzzy left ( right) filter and hence an (${\in},{\in}{\vee}q$)-fuzzy left (resp. right) filter are special cases of an (${\in},{\in}{\vee}q_k^{\delta}$)-fuzzy left (resp. right) filter, and thus several results in published papers are becoming corollaries of our results obtained in this paper.

• Nuclear Engineering and Technology
• /
• v.52 no.6
• /
• pp.1222-1230
• /
• 2020

The corrosion rates of the reactor pressure vessel materials of SA508 Grade 3 were measured using a weight loss method in aerated boric acid solutions to simulate the evaporation of leaked PWR primary water in an ambient environment. The corrosion behavior and products were examined using X-ray diffraction and electron microscopy. SA508 showed typical general corrosion characteristics. The corrosion rate increased steadily as the boron concentration was increased. As the immersion time elapsed, the corrosion rate slowly or rapidly decreased according to the oxidation reaction of iron. The corrosion rate showed a complicated pattern depending on the temperature; it increased gradually and then rapidly decreased again when reaching a certain transition temperature. The corrosion products of SA508 were found to be FeO(OH), Fe₂O₃, and Fe₃O₄. As the boron concentration decreased and the temperature was increased, the formation of Fe₃O₄ was more favorable as compared to the formation of FeO(OH) and Fe₂O₃. Consequently, the changes of the corrosion rate and behavior were closely related to the oxidation reaction of iron on the surface. The corrosive damage to SA508 appears to be most severe when the oxidation reaction is such that Fe₂O₃ forms as a corrosion product.

• Korean Journal of Adult Nursing
• /
• v.17 no.5
• /
• pp.831-843
• /
• 2005

Objective: The study was conducted by the Association of Korean College of Nursing in order to survey and analyze the current state of clinical practicum for adult health nursing at four-year nursing college in Korea and to suggest improvements in the contents and methods of clinical practicum and its future direction. Method: Data were collected using a survey by mail from July to November 2004 using a structured questionnaire on the general state of clinical practicum for adult health nursing. The questionnaires were sent to 53 nursing colleges throughout the country, and 47 recovered questionnaires were analyzed. Results: The number of credits for adult health nursing practicum was 7~10(average range), and various nursing fields were used in clinical practicum. The number of students per team was 5~6 at general wards and 3~4 at intensive care units. Students also experienced practicum during daytime and in the evening. Clinical practicum for adult health nursing was led by full-time professors and field practicum directors. In clinical practicum for adult health nursing, almost every college evaluated students' attitude, skills, leadership, etc. in various forms. Conclusions: It is urgent to develope a standardized evaluation tool for clinical practicum.

• Journal of Korean Society of Forest Science
• /
• v.83 no.4
• /
• pp.521-530
• /
• 1994

Voume functions, which are usually expressed by the function of dbh and height, are estimated commonly through the regression analysis with the highest statistical accuracy considered. In Korea, general volume functions for each tree species were prepared by means of the regression analysis with the exponential function ($V=aD^bH^c$) having the dbh(D) and height(H) as independent variables. In this study, regional stem curve functions for the Pinus densiflora in Kangwon-province were derived and a regional volume function model, in which the stem volume can be directly estimated through the rotational integral of the regional stem curve functions, was prepared. The regional volume estimated by the prepared model was more accurate than the volume by the general volume table for the Pinus densiflora in Kangwon-province. Additionary, the form of stem curves derived by the regional stem curve functions showed difference from each other. The stem in Youngwol and Wonju taper down more fast in upper part than that in other regions. These various stem forms also led to the regional difference in volume estimates.

• Journal of Korean Society of Transportation
• /
• v.31 no.2
• /
• pp.33-44
• /
• 2013

The land use-transportation models typically have complicated model structure that is good for empirical execution but bad for theoretical probe. This complexity makes it very difficult to derive the first-order conditions for system optimization in tractable forms. Yu and Rhee (2011) and Rhee (2012) show how to simplify the derivative of the model's objective function with respect to policy variables in the computable general equilibrium model of land use and transportation. However, the travel demand in their model was fixed. This drawback fundamentally limits the applicability of their methodology in the planning field. We relax this restriction. Once this is done, we can employ the methodology developed in analyzing the impacts of various types of policy instruments in the models where land market is treated endogenously and transportation network is embedded.

• The Journal of the Korea Contents Association
• /
• v.13 no.4
• /
• pp.418-426
• /
• 2013

This study aims to analyze the formativeness of zzaim (traditional craft techniques to combine two or more materials to make an angle or to weave them to make a slope side) and systematically classified these techniques to help furniture manufacturers effectively utilize them in the design of contemporary furniture. From this data, furniture manufacturers can have benefits to understand which type of zzaim techniques will be appropriate to their plan of building furniture, and practically use relevant techniques in the field. This study classified four different applications of zzaim techniques depending on sites, such as (1) the top, (2) middle body, (3) lower body, and (4) legs of furniture. In summary, zzaim techniques are differently applied depending on the application sites and formative types of furniture. This feature makes general furniture manufacturers who want to apply zzaim techniques for the first time have hard time to understand which kind of technique should be applied to which part. Recognizing this problem, this study expects general manufacturers as well as master artisans to more effectively utilize zzaim techniques by providing the systematic data on the formative analysis of types of furniture and application sites.

• Neonatal Medicine
• /
• v.28 no.3
• /
• pp.133-138
• /
• 2021

Osteopetrosis refers to a group of genetic skeletal disorders characterized by osteosclerosis and fragile bones. Osteopetrosis can be classified into autosomal dominant, autosomal recessive, or X-linked forms, which might differ in clinical characteristics and disease severity. Autosomal recessive osteopetrosis, also known as malignant osteopetrosis, has an earlier onset, more serious clinical symptoms, and is usually fatal. We encountered a 1-day-old girl who was born full-term via vaginal delivery, which was complicated by meconium-stained amniotic fluid, cephalo-pelvic disproportion, and nuchal cord. Routine neonatal care was provided, in addition to blood tests and chest radiography to screen for sepsis, as well as skull radiography to rule out head injuries. Initial blood tests revealed hypocalcemia, which persisted on follow-up tests the next day. Radiographic examinations revealed diffusely increased bone density and a "space alien" appearance of the skull. Based on radiographic and laboratory findings, the infantile form of osteopetrosis was suspected and genetic testing for identification of the responsible gene. Eventually, a heterozygous mutation of the T cell immune regulator 1, ATPase H+ transporting V0 subunit a3 (TCIRG1) gene (c.292C>T) was identified, making this the first reported case of neonatal-onset malignant osteopetrosis with TCIRG1 mutation in South Korea. Early-onset hypocalcemia is common and usually results from prematurity, fetal growth restriction, maternal diabetes, perinatal asphyxia, and physiologic hypoparathyroidism. However, if hypocalcemia persists, we recommend considering 'infantile of osteopetrosis' as a rare cause of neonatal hypocalcemia and performing radiographic examinations to establish the diagnosis.