창의성 계발을 위한 시스템 접근 방안

강호감,최선영 仁川敎育大學校 科學敎育硏究所 1997 과학교육논총 Vol.9 No.-

The purpose of this study was to review the systematic approach to the development of creativity. Human thinking and behavior including creativity are controlled by brain. Creativity can be showed when the functions of two hemispheres are a balanced development. And the personal emotional characteristics that can help one to show creativity is very important. Therefore to develop creativity, the ways that the functions of two hemispheres can be a balanced development in individual system, home system, and school system was discussed. And the role of teachers and parents for the development of children's creativity was discussed. Teacher and parents know the components to disturb creativity and must effort to make a good environment to develop creativity. The systematic approach to the development of creativity will help someone to consider arround own's environments, diagnose a point at issue, find out the way of improvement and show one's creativity as much as own can.

Flexural Responses of Prestressed Hybrid Wide Flange Composite Girders

Sun?Jin Han,Deuck Hang Lee,Jae?Yuel Oh,Seung?Ho Choi,Kang Su Kim 한국콘크리트학회 2018 International Journal of Concrete Structures and M Vol.12 No.5

In this study, prestressed hybrid wide flange (PHWF) composite girders were proposed, and full-scale flexural tests were conducted to evaluate their structural performances. This new proposed girder system was developed and designed to effectively resist external loads considering the actual construction sequences. Two specimens with and without shear connectors were fabricated and tested to examine the effect of the shear connectors for achieving the fully-composite behaviors between a cast-in-place (CIP) concrete and the prefabricated prestressed steel–concrete composite girder. The test results showed that sufficient flexural strengths and deformation capacities can be obtained in both types of PHWF composite girders with and without shear connectors. To reflect the actual construction stages of the proposed PHWF composite girder, nonlinear flexural analyses were proposed considering the prestress effect and segmental effect before and after composite with the CIP concrete, respectively. The observed and analysis results of strain behaviors of the PHWF girder specimens were also compared and discussed in detail.

생물교육에서 창의력 계발 방안 모색

강호감,최선영 인천교육대학교 과학교육연구소 2003 과학교육논총 Vol.15 No.-

본 논문은 생물 교육에서 창의력 계발을 위한 교수학습 방법을 제안하는 것으로 기존의 연구를 통해 좀 더 현장에 쉽게 적용할 수 있는 방안을 모색하고자 하였다. 첫째, 생물교육에서 아동의 창의력 계발을 위한 우뇌 기능을 활용할 수 있는 학습활동을 제시하였다. 손을 이용한 모델 활동, 은유와 유추 그리고 안내된 공상과 같은 활동을 통하여 난해한 개념을 쉽게 이해하는데 효과적으로 활용될 수 있다. 둘째, 과학과 수업에서 학생의 창의력을 계발하는데 도움이 되는 교수학습 방법으로 시각적 사고와 마인드 맵핑 그리고 개념도 작성에 관한 방법을 제시하였다. 시각적 사고는 시각적 이미지 만들기, 단순화된 드로잉, 만화, 도표적 표현 그리고 시각적 요소들을 이용한 노트 작성 등을 통하여 창의적으로 상상력을 기를 수 있는데 도움을 줄 수 있다. 마인드맵 작성은 중심 이미지, 키워드, 색, 기호 등을 이용하여 표현함으로써 좌·우뇌를 동시에 자극하여 학생의 창의력을 기를 수 있는데 도움을 줄 수 있다. 그리고 개념도는 지식의 위계적 구조화를 시각적으로 표현함으로 위계를 이해하는데 효과적인 방법이라 할 수 있다. 셋째, 생물교육에서 활용할 수 있는 전뇌학습 모형으로 4MAT 시스템을 도입하였는데 이는 학습자의 학습양식과 좌·우뇌 인지기능 특성을 포함시킨 전뇌학습 모형이다. The purpose of this study is to suggest instructional methods for nurturing creativity in biological education. For this, we adjusted various teaching methods through searching literatures of this subject and proposed examples of methods that they can be applied to science class. 1. We suggest creative activities that can stimulate right hemisphere. For examples, students can understand difficult concept through making a model with hands, analogy, metaphore, and being something through guided imagery. 2. We suggest teaching methods that can nurture creativity in science class. Visual thinking techniques can help students imagine creatively through making an image, drawing, cartoon, graphic, taking a note with visual elements, and so on. Mindmapping can help students nurture one's left and right hemispheres at the same time through images, key words, colors, symbols, etc. Conceptmapping can help one understand hierachy structure of knowledge through making a visual diagram. 3. As school science teaching method to nurture creativity, we introduced the 4MAT system. This program is model based on the whole brain learning including the learning styles and the cognitive specialization of left and right hemispheres.

평균 유효 세율의 결정 요인에 관한 연구

宣炳完,崔康得 全北大學校 1994 論文集 Vol.38 No.-

A number of empirical studies have used effective tax rate(ETR) measures calculated from financial statement information to examine the relations between taxes, firm decisions, and firm characteristics. Studies using the average effective tax rate to measure corporate tax (dis) advantage have played a critical role in tax legislation. Recent research, however, has questioned the effectiveness of the ETR for this purpose. Previous research on corporate ETRs identified three important findings : (1)ETRs vary across firms(industries), (2) ETRs change over time, and (3) variances of ETRs differ across industries. These findings were explained solely in terms of cross-sectional and intertemporal differences in tax preferences. All other factors were implicitly assumed to be unimportant. This paper challenged the existing explanation by deriving the ETR as a function of the marginal tax rate and two variables : tax preferences and (pre-tax accounting)income. The model demonstrated how changes in the ETR can occur under two alternative assumptions about the relationship between tax preferences and income. Specifically, when tax preferences and income are perfectly correlated, the model showed that changes in the ETR are caused solely by changes in tax preferences. In the absence of perfect correlation, however, the model indicated that both tax preferences and income are capable of causing the ETR to change.

고체상 추출과 GC/MSD를 이용한 금속가공유중 다핵 방향족 탄화수소류 및 그 유도체의 분석

최호춘,김강윤,안선희,문형중 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

This study was performed to confirm an analytical method for polyunclear aromatic hydrocarbons (PAHs) in metalworking fluids(MWFs) which were used in metalworking factories. To ensure the analysis with accuracy and precision the fesults of PAHs in MMFs, this study was tried to use solid phase extraction(SPE) and gas chromatography/mass selective detector(GC/MSD). Also, this study was examined the concentrations of PAHs in MMF bulks and the qualitative analysis polycyclic aromatic compounds(PACs)excluding PAHs. 21 bulk samples were sampled in 7 metalworking factories. 21 bulk samples were 18 cutting oil(13 straight oils and 5 soluble oils) and 3 others(lubricating oil, discharge oil. compresses oil). 6 SPE cartridges were used to analyze PAH in MMFs and GC/MSD(satum 2000, Varian, U.S.A). Among the the 6 SPE cartridgesm this study was selected strong cation exchanger(SCX, aromatic benzene sulfonic acid functional group) cartridge for PAHs extraction in MMFs. Also the recovery test was performed. 1. The appropriated cartridge of SPE for analysis of PAHs in MWFs was found to be SCX. 2. The detected PAHs in MWFs were naphthalene(n=2). acenaphthylene(n=1). phenanthree(n=1), anthracene(n=2), fluoranthene(=7), pyrene(n=11) benzo[b]fluoranthene(n=1), chrysene(n=1), benzo[k]fluoranthene(n=1), benzo[k]fluoranthene(n=1).benzo[a]pyrene(n=1), dibenz[a,h]anthracene(n=2) and benzo[ghi] perylene(n=8). Total PAH(n=12) concentrations range were lower than LOD-270.03ug/ml. 3. The component of the PACs excluding PAHs were naphthalenes, acenaphthenes, chrysenes, anthracenes, indenes, fluoranthenes, fluorenes, pyrenes, benzopyrenes, phenantherenes and others volitile organic compounds(VOCs)were amines, phenols, aldehydes and others. For the results, SCX cartridge was better than other 5 SPE cartridges. 13 of 16 PAHs components were detected in MWFs. However recovry rate in this study should be improved analytical techniques on PAHs in MWFs. Also this study was need for further investigation for more MWFs samples and environmental monitoring and evaluation of MWFs exposed workers.

다량의 하부위장관출혈이 병발된 Vibrio vulnificus 패혈증 1예

최주연,유진홍,한석원,이대훈,최민호,박순민,김연식,김선우,신완식,강문원,강성구 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.2

최근 저자들은 Vibrio vulnificus 감염에 의해 패혈증 및 이차성 피부 병변을 보인 42세의 남자 환자의 치료중 하부 위장관 출혈이 병발된 1예를 경험하였기에 보고하는 바이다. We experienced a case of Vibrop vulnificus septicemia which showed an unusual manifestation such as hematochezia. The patient was a 42-year-old man with chronic liver disease. The blood and wound culture revealed the organism. During intensive care, he suffered from massive hematochezi for several days. Colonoscopy and abdominal CT showed findings suspicious of ischemic colitis. To our knowledge, this is the first unusual case of V.vulnificus infection which showed massive lower gastrointestinal bleeding.

레이져 마킹을 위한 갈바노미터 구동에 관한 연구

최치영,홍선기,강태삼,김수길 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

본 논문에서는 레이져 마킹용 갈바노미터의 구동을 위하여 마킹에 필요한 벡터 폰트의 개발환경 구축하고, 만들어진벡터 폰트를 PC와 구동 장치간의 통신용 인터페이스를 제작하여 갈바노미터(galvanometer)에 송신, 출려할 수 있도록 하였다.벡터 폰트의 곡선 처리는 베지어(Bezier) 함수를 사용한 외곽선 폰트(outline pont)를 사용하였다.폰트 에디터를 이용하여 문자를 작성한 후 문자의 외곽선 정보를 인터페이스 카드에 보내고, 이 데이터를 D/A변환기를 통해 갈바노미터 구동장치를 구동하고, 레이져를 갈바노미터 반사경에 조사하여 폰트를 출려할 수 있도록 하였다.인터페이스 카드는 16비트 D/A변환기를 이용하여 PC의 ISA 버스를 이용하였다.실험을 통해 개발된 장치의 구동이 올바르게 동작함을 확인하였다.

초등과학영재학급 학생의 학습양식과 과학탐구능력 간의 상관관계

최선영,송현정,강호감 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2

The purpose of this study was to investigate the relation between the learning styles and science process skills of students of the gifted class in elementary school. Subjects were forty-eight students of the gifted class who are in the fifth grade studying at the gifted class of S elementary school in Bucheon, M and Y elementary school in Incheon on learning styles and science process skills of students. Learning Style Profile (LSP) was used as instrument to survey learning style of students of the gifted class which was developed by NASSP, and consists of four categories (cognitive skills, perceptual response, orientation and learning preferences) and twenty-four subscales. The results of this study were as follows: 1. In the learning styles test, students of the gifted class have higher scores of spatial skill, sequential processing skill, persistence orientation, manipulative preference, temperature preference and after-noon preference than general class students, but they have lower scores of discrimination skill and lighting preference, and there were statistically significant difference. 2. In science process skills test, there were statistically significant difference between students of the gifted class and general students. 3. In the correlation between the learning styles and science process skills, there was positive correlation of observing skill with spatial skill and manipulate skill of cognitive skill domain. For classifying skill, there was positive correlation with visual perceptual response, but was negative correlations with auditory and emotive perceptual response of perceptual response domain and with evening preference and verbal risk orientation of study preference domain. For measuring skill, there was positive correlation with sequential processing skill of cognitive skill domain. For formulating hypotheses, there was positive correlation with persistence orientation of study preference domain. For controlling variables, there was positive correlation with sequential processing skill and simultaneous processing skill of cognitive skill domain, and with verbal-spatial preference and early morning study preference of study preference domain. When planning and man-aging the gifted class, it will be beneficial and effective to consider the meaningful relations between the elements of learning style and science process skills in order to improve science process skills.

아동의 行態的 特性을 고려한 住居 變容과 計劃에 관한 연구

강순덕,최윤식,박시환 釜山大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.53 No.-

주거문화는 생활에 필요한 기능과 사회문화적 경향에 영향을 받은 사회적 특성 및 개인적 특성이 내포됨으로서 상징화된다. 본 연구에서 다루는 주거개념의 변화를 주도하는 근거로서 가족의 생활형태는 사회적인 변화와 개인적인 가치의 표현정도에 의해 공간으로 실체화된다. 특히 가족의 구성원 중 아동의 행태는 나이, 가족수, 주거 규모, 부모의 교육정도 등과 같은 비교적 명확한 영향력에 의해 변화될 수 있으며, 주거문화의 변화를 주도하는 구성원으로 성장하는 인과적 결과를 낳게 된다. 그러므로 아동 공간의 계획은 성인의 공간계획과는 차별화된 접근이 필요하며, 계획적 요소들은 성인과 대등한 입장에서 분석되어야 한다. 즉 프라이버시, 취미, 영역성, 자기관리 등의 사회적, 개인적 가치를 충분히 배려하여야 하고 이를 통해 주거내의 공간적 특성인 규모와 위치, 내부장식, 다른 기능실들과의 관계 등을 종합적으로 고찰하여 설계에 반영하여야 한다. Housing culture was symbolized as emphasis on personality and trend of social value to complex functions and fashion. A study about family's behavior, as main reasons for changing ideas of housing, is to find the results, the process of social changes, and the personal values to represent residential spaces. Behaviors of children can be transformed by age, family number, housing plan, parents' education, etc. Schemes for children room has privacy, taste, territory, and self control, etc. And, the relationships between parents and children can be strengthened, independent or become familiar by the sizes, locations, spatial relations, and decorations of interior spaces.

19세기 여성문학과 생태의식 : 도로씨 워즈워스, 수잔 쿠퍼, 베티나 폰 아르님의 작품에 나타난 문명비판과 대안사회 Cultural Criticism and Alternative Society in the Works of Dorothy Wordsworth, Susan F. Cooper and Bettina von Arnim

강용기,사순옥,최동오,패트릭머피 한국현대영어영문학회 2006 현대영어영문학 Vol.50 No.1