중학교 과학영재 담당교사의 PCK 요소의 특징과 관련성

김선경,민희정,방은정,백성혜 韓國英才學會 2011 영재교육연구 Vol.21 No.4

중학교 과학영재 담당교사의 수업을 관찰하여 Pedagogical Content Knowledge(PCK)의 요소 를 분석하고, 요소간의 관련성을 알아보았다. 연구 대상은 대도시 지역의 중학생 대상 영재교 육원에서 과학을 가르치는 교사 4명이었으며, 전공은 각각 물리, 화학, 생물, 지구과학이고 2 명은 전임교사, 2명은 겸임교사였다. 또한 전임교사들은 영재학생들만 가르쳤고, 겸임교사들 은 보통 일반학생들을 가르쳤고, 특별히 주 1회 영재학생들을 가르쳤다. 수업관찰, 반구조화 된 인터뷰를 실시하였으며, 문서자료를 수집하여 질적으로 분석하였다. 연구 결과, 과학영재 담당교사의 PCK 요소의 몇 가지 특징이 나타났다. 교사들의 과학교수지향은 PCK의 요소들 과 긴밀하게 상호작용하고 있었다. 교사들의 교육과정지식은 교사에 따라 상이했지만, 학습 유형의 선택은 교사의 영재 교육 및 수업의 목표와 관련되어 있었다. 또한 이러한 교육과정 지식은 학생에 대한 이해의 영향을 받았다. 교사들은 교육과정지식과 학생에 대한 이해에 따 라 수업에서 서로 다른 교수전략을 사용하고 있었다. 또한 PCK의 요소들의 관계는 밀접했으 며 방향성을 가지고 있었다. 이러한 연구결과를 바탕으로 PCK의 요소와 관계성을 설명하기 위해 사면체 모델을 제안했다. In this study, we analyzed the characteristics of Pedagogical Content knowledge(PCK)'s components through actual course of teachers of science gifted students in the middle school. For this study, four middle school science teachers of gifted students belonging to the gifted education professional organizations in a metropolis were selected, each of them was physics, chemistry, biology, and earth science teacher. Two of them were full-time teachers to teach only gifted students and two were part-time teachers who had taught general students in ordinary time and specially had taught the gifted students once a week. Qualitative data were collected through classroom observations, interviews, and documents. As a result, some unique characteristics of PCK's components were identified. The teachers' orientations to teaching science were closely correlated with PCK's components. The teachers' knowledges of science curriculum were different individually. But the decisions about type of teaching(acceleration or enrichment) were connected with the objectives of gifted education and lesson objectives. Also, the teachers' knowledges of science curriculum were influenced by the knowledge of students' understanding. Teachers used different instructional strategies according to the knowledge of science curriculum and the knowledge of students' understanding. We found that PCK's components were so closely connected and could show the direction of relationships among those PCK's components. We suggested teachers' PCK model which was named "Tetrahedron Model of PCK", to explain the characteristics and relationships of PCK's components.

2.45GHz 대역 LTCC Balun-BPF의 설계

정을영,최경,황희용 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B

This paper presents a LTCC Balun-BPF, which is a BPF(band pass filter) with a Balun in a single LTCC chip for the direct interface with a MMIC chip having balanced inputs. The physical dimension of the designed Balun-BPF is 2.4x2.0x0.88 ㎣ and the used dielectric constant E_(r) is 36. A Balun of three-lines structure with striplines and a BPF of comb-line structure was combined into the Balun-BPF. The simulated result shows 4.8dB of insertion loss, 178~179 degree of the phase imbalance, 14dB of the return.

2상 HB형 Linear Stepping Motor의 정지정도 개선에 관한 연구

정의남,임윤희,이상교,이경호,송우창 三陟大學校 1999 論文集 Vol.32 No.1

A Linear Stepping Motor (LSM) can operate in an open loop control mode similarly to a rotary stepping motor. However, the LSM occur error between the actual mover position and the ideal position. In this paper, a position accuracy improvement method using an energy stored in winding inductance of the LPM is proposed.

한센병 환자의 족저궤양과 최대 족저압력과의 관계

정도영,박경희,이강성 한국전문물리치료학회 2002 한국전문물리치료학회지 Vol.9 No.1

Foot ulceration results in substantial morbidity in patients with peripheral neuropathy. The purpose of this study was to find the relationship of plantar foot pressures during walking to plantar ulceration in patients with Hansen's disease. The subjects were recuruited from two Welfare Clinic for Hansen's disease in Wonju and Uiwang city. Ten subjects (5 females, 5 males) with plantar ulceration and a mean age of 63 years were evaluated in this study. The mean duration of Hansen's disease in these subjects was 30 years. Plantar pressures were measured during self-selected comfortable walking speed by using MatScan system. Three subjects had plantar ulceration under the first metatarsal head. Five subjects had plantar ulceration under the second and third metatarsal head. Two subjects had plantar ulcers under the fifth metatarsal head. Eight of 10 subjects had plantar ulceration at highest pressure point that measured during walking. This result suggests that the abnormal high plantar pressure could be related factor to plantar ulceration in patients with Hansen's disease. Also the foot pressure measurement may be useful to evaluate the risk of plantar ulceration in patients with Hansen's disease.

악성 혈액질환에서 성공적인 동종골수이식 후 숙주 기질 미세환경의 구축

조상희,이제중,남찬은,최경상,정익주,이일권,김진희,박종태,김형준 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1

인체의 골수는 간엽모세포를 함유하고 있으며 이들은 골수미세환경의 주된 세포들로 분화가 가능하여 조혈기능을 지지한다. 본 연구에서는 성별이 다른 동종조혈모세포이식 환경에서 조혈모세포의 완전 생착을 보이고, 이식 후 1년에서 8년이 지난 11예의 재생불량성 빈혈 및 백혈병 환자들을 대상으로 하여 골수에서 MSC를 분리하고 체외 확장을 통해 배양된 MSC에서 X 염색체 탐식자를 이용한 FISH 및 microsatellite polymorphism PCR 기법으로 그 기원을 확인하였다. 그 결과 조혈모세포는 완전히 공여자 기원으로 대치되었음에도 불구하고 MSC는 모두 수여자 기원임을 알 수 있어, 동종조혈모세포이식에서 미세환경의 구축은 수여자의 자가 생산에 의한 골수 간질세포에 의한 것으로 생각된다. Background: Human bone marrow (BM) contains mesenchymal stem cells (MSC) that can differentiate into various cells of mesenchymal origin. It remains a matter of controversy whether donor-derived stromal cells are capable of engraftment following hematopoietic stem cell transplantation (HSCT) or not. Methods: To determine if donor-derived stromal cells are transferred to the recipients of allogeneic HSCT, we investigated the characterization of MSC in 11 patients 1 to 8 years after sex mis-matched allogeneic HSCT in severe aplastic anemia and leukemia. Results: All patients had complete engraftment with donor- derived stem cells as shown by detection of donor type DNA in peripheral blood mononuclear cells. Following culture, MSC showed the expression of SH2 and SH4, but none of the hematopoietic markers of CD14, CD34, or CD45. MSC which can be differentiated to osteogenic lineage showed the genotype of recipient completely using FISH or PCR analysis. Conclusion: This study confirmed that MSC isolated from recipients of allogeneic HSCT in severe aplastic anemia and leukemia are not of donor genotype despite of full hematopoietic engraftment with donor type. Donor cells did not contribute to reconstitute the marrow microenvironment.

고관절 전치환술시 응용프로그램을 이용한 수술 전 계획

원중희,김용민,최의성,손현철,박경진,남기세,정재중 대한고관절학회 2003 Hip and Pelvis Vol.15 No.3

천연 포도과즙 발효용 식초산균 분리

최경호,정은희 대구효성가톨릭대학교 응용과학연구소 1998 응용과학연구논문집 Vol.6 No.2

포도과즙을 이용한 식초산 생산을 위하여 강한 증식력과 아울러 아황산 소다 및 poly phenol성 물질에 대한 내성을 지니고 산소 요구도가 낮은 발효균주가 요망되었다. 본 연구에서는 이러한 성질을 갖춘 우수한 식초산균을 분리하기 위하여 실험을 수행하였으며 탄산칼슘을 첨가한 ethanol배지와 포도과즙을 이용하여 여러 가지 재래초로부터 식초산균을 분리하였다. 분리균은 단간균 내지 타원형 세균으로 불규칙한 모양을 하고 있으며, 전체적인 모양은 대조군으로 사용한 Acetobacter aceti(KCTC 1010)와 비슷하였으나 크기의 차이가 있다. 분리균의 증식도는 대조균보다 현저히 빨랐으며 paper disc법으로 확인한 clear zone 생성능력(Acetic acid 생성 능력과 비례)은 분리균이 대조균보다 약 11%가 높았다. 분리균은 포도과즙을 산도 6.2%의 포도식초로 발효하였으며, 8일간의 발효과정중 pH는 3.8에서 3.5로 약간 저하되었다. HPLC분석에 따른 발효전과 발효 후의 유기산의 변화는 tartaric acid와 fumaric acid가 약간 증가되었으며, acetic acid는 약 2.5배 증가하여 전체 유기산의 90%이상을 차지하였고 총 유기산의 함량도 증가하였다. 이상의 결과로 본 실험에서 분리한 식초산균은 천연 포도과즙에서 빠르게 증식하여 고동도(6%이상)의 식초산을 생성할 뿐만아니라 pH와 색상의 변화가 적고 정치배양에도 잘 적응하는 우수한 포도식초 발효균으로 판정되었다. Experiments were carried out to isolate a bacterial strain for fermentation of alcoholic grape juice(low grade wine) to vinegar without any drastic changes in color of the products. Among eight strains of bacterium isolated from various sources, a bacterial strain was finally selected as the fermenting organism by using solid-ethanol medium. Cells of the bacterium were rod or ellipsoid-shaped. Microscopic morphology of the cells were very resembled to Acetobacter aceti(KCTC 1010) used as an control organism. The bacterium grew actively in grape juices after a lag phase for 2 hours, and produced acetic acid in accordance with it's growth. Wine vinegar containning 6.2% acetic acid and having typical flavor and color of grape fruit was produced by fermentation for 8 days. These results suggest that the isolated bacterium was an Acetobacter sp. and useful for fermentation of wine vinegar of good quality.

전문대학 간호과 통합교과과정 개발에 관한 연구

김영희,김정수,김정애,방숙명,배경진,이애경,장은정,정안순,주미경,최나영 경복대학 1998 京福論叢 Vol.2 No.-

교과과정의 조직은 체계적이고 뜻이 있는 순서로 학생들을 가르치기 위해 지식을 어떻게 조직화할 것인지와, 과목들 사이에서 공통된 내용은 통합시켜 중첩되는 일이 없도록 조정할 필요가 있다. 이에 현재 본 대학 간호과에서 운영되었던 97학년도의 17개 전공과목들의 교과과정의 내용을 비교, 분석하여 중복을 줄이며 순차적 지식의 습득을 도모하는 새로운 통합교과과정의 틀을 개발, 제시함으로써 보다 나은 전문직 간호교육이 이루어지도록 하고자 하였다. Most curricula are considered how to teach the student in systematic and meaningful orders. And it is necessary to coordinate the duplicate contents in major subjects in nursing. So this study was designed to set up a new comprehensive curriculum through comparing and ananlyzing each seventeen major subjects in Nursing Department of Kyung-Bok College. Therefore, the purpose of this study is to present the new comprehensive curricula for promoting the efficiency and effectiveness in diploma degree course of nursing education.

효과적인 유역관리를 위한 CN기법 기반의 침투량 산정 및 기저유출량 분석

김희원 ( Hee Won Kim ),신연주 ( Yeon Ju Sin ),최정헌 ( Jung Heon Choi ),강현우 ( Hyun Woo Kang ),류지철 ( Ji Chul Ryu ),임경재 ( Kyoung Jae Lim ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.4

Increased Non-permeable areas which have resulted from civilization reduce the volume of groundwater infiltration that is one of the important factors causing water shortage during a dry season. Thus, seeking the efficient method to analyze the volume of groundwater in accurate should be needed to solve water shortage problems. In this study, two different watersheds were selected and precipitation, soil group, and land use were surveyed in a particular year in order to figure out the accuracy of estimated infiltration recharge ratio compared to Web-based Hydrograph Analysis Tool (WHAT), The volume of groundwater was estimated considering Antecedent soil Moisture Condition (AMC) and Curve Number (CN) using Long Term Hydrologic Impact Assessment (L-TH1A) model. The results of this study showed that in the case of Kyoung-an watershed, the volume of both infiltration and baseflow seperated from WHAT was 46.99% in 2006 and 33.68% in 2007 each and in Do-am watershed the volume of both infiltration and baseflow was 33.48% in 2004 and 23.65% in 2005 respectively. L-TFIIA requires only simple data (i.e., land uses, soils, and precipitation) to simulate the accurate volume of groundwater. Therefore, with convenient way of L-TKIA, researchers can manage watershed more effectively than doing it with other models. L-THIA has limitations that it neglects the contributions of snowfall to precipitation. So, to estimate more accurate assessment of the long term hydrological impacts including groundwater with L-THIA, further researches about snowfall data in winter should be considered.

STI571 (Glivec^(�))에 의하여 빠른 치료 반응을 보인 불응성 Gastrointestinal stromal tumor

윤경원,이제중,김여경,황호인,이병환,조상희,정익주,김형준 全南大醫大 2001 전남의대학술지 Vol.37 No.4