초등교사의 직무만족도와 직무성취도에 영향을 미치는 변인에 대한 분석

박은실,김의철,박영신 이화여자대학교 교육과학연구소 2007 교육과학연구 Vol.38 No.3

The purpose of this study is to analyze factors that influence job satisfactionand occupational achievement of elementary school teachers, focusing specificallyon the mediating role played by social support and self-efficacy. A total of 355elementary school teachers, who are participating in teachers' training program,completed a questionnaire developed by Park and Kim(2005). The results showthat self-efficacy is an important predictor of occupational achievement. Specially,teachers' efficacy, self-regulation efficacy and social efficacy influenced teachers' occupational achievement. Social support received from administrators andcolleagues increases job satisfaction. 이 연구의 주된 목적은 초등교사의 직무만족도와 직무성취도에 영향을 미치는 변인을 탐색하는 데 있다. 이 연구에서는 특별히 사회적 지원과 자기효능감이 초등교사의직무만족도와 직무성취도에 어떠한 영향을 미치는지를 체계적으로 분석하고자 한다. 분석대상은 연수에 참여한 초등교사 355명이었다. 질문지는 박영신과 김의철(2005)에의해 제작되었으며 분석 결과는 다음과 같다. 첫째, 초등교사의 직무성취도는 교사효능감, 자기조절 효능감, 사회성효능감에 의한 설명력이 가장 높으므로, 자기효능감은직무성취도를 결정하는 가장 핵심적인 변인임이 확인되었다. 둘째, 초등교사의 직무만족도는 학교관리자로부터의 사회적 지원에 의해 가장 영향을 받았으며, 또한 동료 교사로부터의 사회적 지원도 의미 있는 변인으로 포함되었다.

Tris (2,2'-bipyridine) iron(Ⅱ) comple의 電氣化學的 酸化

황정의,정종재,박은숙 慶北大學校 1981 論文集 Vol.32 No.-

The electrochemical oxidation of tris (2,2′-bipyridine) iron (Ⅱ) complex was studied by stationary method for current-potential relation and cyclicvoltammetry. In stationary method, the kinetic data were compared to that of homogeneous system on the basis of the Marcus theory. Electrochemical standard rate constant was 1.42×10 exp(-4)cm sec^-1(at 25℃, polarization time=60sec), and activation energy, enthalpy of activation, entropy of activation for the electrochemical oxidation were 4.32KJmol^-1, 1.81KJmol^-1, -0.265KJ°K^-1 mole^-1, respectively. It was estimated that the ordering of the solvent molecules around the reactant was increased in the activated state formed in the electrochemical oxidation of Fe(bipy)_3^2+. In cyclicvoltammetry, Fe(bipy)_3^2+ was studied in aqueous and non-aqueous solvent. The experimental results were compared with the diagnostic criteria derived by Nicholson and Shain. It was found that the oxidation of Fe(bipy)_3^2+ was the simple reversible charge transfer reaction at low pH. At high pH, however, the reversible process was followed by the irreversible formation reaction of ferric hydroxide ion. In acetonitrile, the reversible oxidation of Fe(bipy)_3^2+ was coupled with the catalitic reduction of Fe(bipy)_3^2+ to reproduce the ferrous complex. The major cause of solvent effect on the electrode reaction could be attributed to the unstable nature of Fe(bipy)_3^2+.

전치부의 발육 결함 및 교정 후 탈회 병소의 심미적 개선을 위한 resin infiItration

김은영,안울진,김신,정태성 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.2

어린이 영구전치의 법랑칠 발육 결함이나 고정성 장치에 의한 교정치료 후 탈회 병소는 흔히 심미적 문제를 유발한다. 본 연구는 상악 전치부에 위 원인에 의한 탈회로 인하여 백반양 병소를 보이는 21명 어린이의 38개 치아를 대상으로, 최근 비침습적인 방법으로 소개된 resin infiltration 기법을 적용하고, 병소의 색조의 임상적 개선 효과를 비교, 분석하여 다음과 같은 결과를 얻었다. 1. 1주 후 색조가 개선된 병소는 발육 결함 병소의 25%, 교정 탈회 병소의 61%로 나타났다. 2. 발육 결함 병소의 40%, 교정치료 후 탈회 병소의 6%에서는 시술 전후의 색조변화를 관찰할 수 없었다. 3. 법랑질 발육결함 병소에서는 시술 직후 보다 1주 후에 더 많은 색조 변화를 관찰할 수 있었다. 결과적으로 일부 증례에서는 색조의 극적인 개선이 관찰되었으나, 또 일부 증례에서는 변화가 거의 나타나지 않았는데, 이는 병소 깊이의 차이에 기인한 것으로 사료되었다. The prevalence of developmental defects of enamel and lesios by post-orthodontic decalcification has been reported with increasing frequency. Even though there have been increasing interests and clinical challenges in esthetic improvement of these lesions, few of studies were reported for using non-invasive approach which is a very significant matter for child and young adults. This study was conducted to assess clinical effect on the improvement in color of these lesions via resin infiltration method developed as minimum invasive technique for white spot. For the 38 maxillary anterior teeth with calcification problem. the changes in color between before- and after- infiltration treatment, were evaluated and summarized as following. 1. A week after infiltration, 25% of developmental defects and 61% of decalcification lesions were improved in color as the value of ΔE below 3.7. 2. 40% of the developmental defects and 6% of decalcification lesions showed no significant change. 3. The developmental defects showed more remarkable changes in color 1 week after infiltration rather than immediately after the treatment. From our study results, it is considered that the amount of color improvement depended on the depth of lesion. In other words, for the lesion having more depth than the depth infiltrant resin can penetrate into, infiltration treatment showed no significant effect. Therefore, for clinical indication of resin infiltration treatment, further research on precise measurement technique of lesion depth is strongly required.

간외담관 폐쇄에서의 초음파소견 : 담관벽 경계소실의 중요성 Significance of Decreased Echotexture of Bile Duct Wall-Interface

신현준,손은주,이창희,최영칠,전혜정,박정희,이태의 건국대학교 의과학연구소 2002 건국의과학학술지 Vol.12 No.-

Ultrasound is very useful in evaluation of obstructive jaundice. We retrospectively evaluated the useful findings of ultrasonography in differentiating benign extrahepatic duct obstruction from malignant diseases. Among the 36 patients, 25 patients were benign extrahepatic obstruction and 11 patients were malignant obstruction. The shapes of extrahepatic dilatation were classified into fustiform, meniscus, and abrupt cut off by bowel gas. The diameter, length, and bile duct wall-interface were compared between benign and malignant groups and serum bilirubin and alkaline phosphatase were also compared between two groups retrospectively. The results were as follows. The most common form of extrahepatic dilatation was meniscus(10 of 26 patients, 38%) in benign obstruction, and fusiform(8 of 11 patients, 73%) in malignant obstruction. No significant difference was noted in diameter, length, serum bilirubin, and alkaline phosphatase between benign and malignant groups. Only one case showed decreased bile duct wall-interface in benign obstruction, but loss or decrease of bile duct wall-interface were 8 patients in malignant obstruction. The combined findings of fusiform dilatation and loss of bile duct wall-interface in ultrasonography will be helpful in differential diagnosis of malignant extrahepatic bile obstruction from benign conditions.

Comprehensive and synthetic inventory of Dokdo Island, Republic of Korea

Ui Wook Hwang,Hyun Soo Rho,Bia Park,Eun Hwa Choi,Cho Rong Shin,Sa Heung Kim,Jongrak Lee,Hack Cheul Kim,Mann Kyoon Shin,Taeseo Park,Jumin Jun,Heegab Lee,Jong Eun Lee,Yoon Sik Oh,Jung-Goo Myoung,Chang G The National Institute of Biological Resources 2023 Journal of species research Vol.12 No.no.spc

This study aims to establish a comprehensive, synthetic inventory system for the fauna and flora of Dokdo Island, Republic of Korea, which has been conducted by a specialized research group consisting of more than 50 experts. The research was conducted over five years(2015-2019) and supported by the National Institute of Biological Resources, Ministry of Environment, Republic of Korea. All possible publications on the fauna and flora of Dokdo Island over the last 68 years from 1952 to 2020 were reviewed. As a result, 1,302 species were found on Dokdo Island during the study period. An updated list of 1,963 species was created. This is expected to be of great help for the conservation and national publicity of important indigenous biological resources of Dokdo Island.

Construction of a Genetic Linkage Map in ‘Byungkyul’ with RAPD Markers

Eun Ui Oh,Jae Hyun Park,Kwan Jeong Song 한국원예학회 2013 한국원예학회 학술발표요지 Vol.2013 No.5

Response of fruit set and quality and seed formation to ploidy levels of pollen donor in yellow-fl eshed kiwifruits

Eun Ui Oh,Seung Yong Jeong,Ju Young Kim,송관정 한국원예학회 2021 Horticulture, Environment, and Biotechnology Vol.62 No.1

This study investigated how the ploidy level of the kiwifruit pollinizer cultivars “CK3” (diploid), “T line” (tetraploid),“Pohwa” (hexaploid) and “Chieftain” (hexaploid) aff ected fruit set, fruit quality, and seed formation in the tetraploid kiwifruitcultivars “Halla Gold” and “Sweet Gold” cultivated in an unheated greenhouse in Jeju, Korea. Pollen tubes growingin the pistil reached and combined with the ovule 3 days after artifi cial pollination, and their patterns diff ered depending onthe ploidy level of the pollen parent. The number of pollen tubes observed in “Halla Gold” and “Sweet Gold” pistils wassignifi cantly lower following pollination by “CK3” than with the other pollen donors. In all pollen treatments, the fruit setrates were > 90%. The fruit weight of both “Halla Gold” and “Sweet Gold” were high following pollination with “Chieftain”and “Pohwa”. The dry matter content, soluble solids, and acidity were not signifi cantly diff erent among all pollinationtreatments. Fruit fi rmness was higher following pollination with “Chieftain” and “Powha.” Colorimeter h ˚ values for fl eshof “Halla Gold” was low following pollination with “CK3,” but there were no diff erences for “Sweet Gold” among all pollinations. The number of seeds showed a similar trend to fruit weight, but the 100-seed weight was highest with “T line” asthe pollinizer. The results indicate that the ploidy level of the pollen donor aff ects fruit quality more than fruit set. Also, thepollen most suitable for cultivation of “Halla Gold” and “Sweet Gold” is considered to be tetraploid “T line” and hexaploid“Pohwa” and “Chieftain,” which showed favorable eff ects on the weight and fi rmness of fruits, and the number and weightof seeds without adversely infl uencing fruit set and dry matter content.

Rootstock Exposure Length above Soil Related to Scion Growth and Fruit Quality in Citrus

Eun Ui OH,Ju Young Kim,Sang Hun Kang,Kwan Jeong Song 한국원예학회 2020 한국원예학회 학술발표요지 Vol.2020 No.11

Characterization of Pollen Development in Staminate Kiwifruit (Actinidia sp.) Cultivars

Eun Ui Oh,Seung Yong Jeong,Hyeong Ho Kang,Kwan Jeong Song 한국원예학회 2020 원예과학기술지 Vol.38 No.1

This study was conducted to determine the timing of flower harvest for pollen collection and preparation in kiwifruit. Here the pollen development of two staminate cultivars, ‘Bohwa’ and ‘Chieftain’, which are the major pollinizers used in the region of Jeju in Korea, was investigated. These two staminate cultivars showed a similar tendency in histological pollen development, except for the time of anther dehiscence. The highest pollen quantity was obtained at the 4th developmental stage; thereafter, the quantity of pollen decreased by 23% and 38% at the 5th developmental stage in ‘Bohwa’ and ‘Chieftain’, respectively. The pollen viability of ‘Bohwa’ was slightly higher than that of ‘Chieftain’ in both 1% iodine potassium iodide and fluorescein diacetate staining with a small increase according to progression in flower development from the 1st to the 5th stage. Pollen germination also increased as flower development advanced, and higher pollen germination of more than 60% occurred in the 4th developmental stage of both staminate cultivars. The results indicate that the appropriate timing for pollen collection might be the 4th developmental stage (full balloon stage) in ‘Bohwa’ and ‘Chieftain’ according to the amount of pollen production, viability, and germination.

Ploidy Level of Pollinizers Affecting Fruit Quality and Seed Formation in Kiwifruits

Eun Ui OH,Hyeong Ho Kang,Ju Young Kim,Kwan Jeong Song 한국원예학회 2019 한국원예학회 학술발표요지 Vol.2019 No.10