방과후학교의 유형과 학습몰입 정도에 따른 중학생의 방과후학교 교육만족도 차이

신현아(Hyun-A Shin),장윤옥(Yoon-Ok Jang) 한국콘텐츠학회 2011 한국콘텐츠학회논문지 Vol.11 No.8

본 논문은 방과후학교의 유형과 학습몰입 정도에 따른 중학생의 방과후학교 교육만족도의 차이를 분석하면서 방과후학교의 유형과 학습몰입 정도에 상호작용 효과가 있는지를 살펴보는데 그 목적이 있다. 연구의 대상은 중학교 1,2,3학년 382명이며, 조사도구로는 연구대상자의 일반적 특성, 수강한 방과후학교 수업의 일반적 특성, 그리고 학습몰입 척도와 방과후학교 교육만족도 척도로 구성된 질문지를 사용하였다. 구체적인 연구문제를 검증하기 위하여 다변량분산분석(MANOVA)을 사용한 결과 방과후학교 특기ㆍ적성수업을 수강한 중학생들이 교과수업을 수강한 중학생들보다 방과후학교 지도교사만족도가 높은 것으로 나타났으며, 학습몰입 정도가 높은 중학생들이 학습몰입 정도가 낮은 중학생들보다 방과후학교 교육과정, 지도교사, 교육시설만족도가 모두 높은 것으로 나타났다. 그리고 학습몰입 정도가 높은 중학생들에 있어서는 특기ㆍ적성수업을 수강한 중학생들이 교과수업을 수강한 학생들보다 방과후학교 교육과정과 교육시설만족도가 높았으며, 학습몰입 정도가 낮은 중학생들에 있어서는 교과수업을 수강한 학생들과 특기ㆍ적성수업을 수강한 중학생들 간에 방과후학교 교육과정과 교육시설만족도에 유의한 차이가 나타나지 않았다. The purpose of this paper was to investigate differences in middle school student's after school satisfaction according to the type and the degree of flow of after school. For the purpose of this paper, a survey was conducted including a questionnaire consisting of a general characteristic of the study object, a general characteristic of the after school class, learning-flow scale, and after school satisfaction scale. The subjects were 382 students who were selected at random from middle school students. Cronbach’ α and MANOVA were employed for data analysis. The results were as follows: First, the students with special-abilityㆍaptitude class were more satisfied for after school instructors than the students with subject class. Second, the students with the degree of high learning-flow showed higher satisfaction in after school class curriculum, instructors, and educational facility than the degree of low learning-flow students. Third, among the students who were high in learning-flow, the students with special-abilityㆍaptitude class were more satisfied with after-school class curriculum and educational facility compared to the students with subject class.

레이저를 이용한 밀리미터 스케일 와동 발생에 대한 연구

이은도(Uen Do Lee),곽영태(Young Tae Guahk),신현동(Hyun Dong Shin),Jonathan H. Frank,Sebastial A. Kaiser 한국연소학회 2008 KOSCOSYMPOSIUM논문집 Vol.- No.-

Laser-induced vortex generation was studied in a millimeter scale nozzle. Acetone, carried by nitrogen, was ejected through a axisymmetirc nozzle of 1 ㎜ inner diameter and 193㎚ ArF excimer laser beam was irradiated for the photolysis of the seeded acetone. The pressure perturbation from the laser photolysis is trigger the development of a small scale vortex. The pressure perturbation can make very repeatable vortex because the pressure disturbance is highly localized and has short-duration. The temporal evolution of the vortex was imaged by using acetone laser-induced fluorescence (LIF). The experiment was conducted in an atmospheric pressure and room temperature.

흰쥐 뇌의 측중격핵에서 망간에 의한 산화적 손상에 관한 연구

신현아(Hyun A Shin),고현철(Hyun Chul Koh),이수진(Soo Jin Lee) 한국응용약물학회 2002 Biomolecules & Therapeutics(구 응용약물학회지) Vol.10 No.1

N/A This study was carried out to identify the effect of oxidative stress on the pathogenesis of manganese intoxication. Five rats in experimental group were given with MnC1_2 intraperitoneally for 4 weeks(4 ㎎/㎏ once daily, 5 days per week) and another five rats for control group were given with normal saline. In experimental group, manganese concentrations increased significantly in nucleus accumbens by 142% (p<0.05), SOD activities increased significantly by 124%(p<0.01), and MDA concentrations increased significantly 148%(p<0.05) compared with control group. Among fatty acids, total n-6 polyunsaturated fatty acids(PUFAs) increased significantly by 231%(p<0.05) compared with control group. Arachidonic acids(AA) increased by 224%(p<0.05), and these increase were composed mostly of n-6 polyunsaturated fatty acids(PUFA). Among n-3 PUFAs except linolenic acids, eicosapentanoic acid(EPA) decreased significantly by 38%(p<0.01) and docosahexanoic acids(DHA) decreased by 30% (p<0.05) compared with control group. Our results suggest that the oxygen free radicals produced by manganese may cause compositional changes of fatty acids in nucleus accumbens of the rat. Characteristics of fatty acids compositional changes by manganese were the decrease of EPAs and DHAs(n-3 PUFAs), and increase of AAs(n-6 PUFAs). These changes with the increase of MDA, suggest that manganese neurotoxicity is caused by lipid peroxidation mediated with oxygen free radicals, especially superoxide radicals.

제주도 용암 해수로 대량배양한 미세조류 멜로시라(Melosira nummuloides)의 성분 특성

김윤영 ( Yunyoung Kim ),신현아 ( Hyun-a Shin ),최정우 ( Jeong-woo Choi ),김미연 ( Mi-yeon Kim ),고경민 ( Gyung-min Go ) 한국수산과학회 2022 한국수산과학회지 Vol.55 No.2

In this study, we analyzed the compositional characteristics of Melosira nummuloides mass-cultured using Jeju lava seawater. M. nummuloides showed the highest growth rate when cultured for 14 days at 17-20℃ and 15,000 lx. Proximate composition of raw-material (RM) and freeze-dried M. nummuloides (FM) showed high ash content (65-72%), while ethanol-extracted M. nummuloides (EM) had low ash and high lipid contents. The predominantly occurring mineral, Si, was 334 g/kg in RM and 269 g/kg in FM, but EM contained only 1.97 g/kg. The ratio of essential amino acids was similar in RM (38.93%) and FM (36.89%) lower in EM (17.83%), but branched chain amino acids required for muscle metabolism was high (63.40%). The polyunsaturated fatty acids of EM (34.74%) was 11% more than that in RM (23.81%), and the ratio of omega-6 to omega-3 fatty acids was 1:3.6. Furthermore, the concentration of total chlorophyll was higher by 5.15 times (62.32 mg/g) and that of fucoxanthin by 7.06 times (11.02 mg/g) in EM than in RM (12.11, 1.56 mg/g, respectively). The mass cultivation and filtration of M. nummuloides using lava seawater has high prospects of commercialization as a competitive bio silica, cosmetic and healthy functional food material.

소 정자에 있어서 활성산소계가 정자 기능과 지방산화 및 DNA 절편화에 미치는 영향

류범용,정영채,김창근,신현아,한정호,방명걸,오선경,김석현,문신용,Ryu, Buom-Yong,Chung, Yung-Chai,Kim, Chang-Keun,Shin, Hyun-A,Han, Jung-Ho,Pang, Myung-Geol,Oh, Sun-Kyung,Kim, Seok-Hyun,Moon, Shin-Yong 대한생식의학회 2002 Clinical and Experimental Reproductive Medicine Vol.29 No.2

Objective : To evaluate the effects of the reactive oxygen species (ROS) generated with a xanthine (X) and xanthine oxidase (XO) system on sperm function, the change of sperm characteristics, lipid peroxidation, and DNA fragmentation in bovine spermatozoa. Materials and Methods: ROS were produced using a combination of 1000 uM X and 50 mU/ml XO. The ROS scavengers: superoxide dismu tase (SOD) (200 U/ml) and catalase (500 U/ml) were also tested. Spermatozoa were incubated for 2 hours in BWW medium with a combination of X-XO supplemented with or without ROS scavengers at $37^{circ}C$ under 5% $CO_2$ incubator. Sperm movement characteristics by CASA (computer-aided sperm analysis), HOST (hypoosmotic swelling test), Caionophore induced acrosome reaction, malondialdehyde formation for the analysis of lipid peroxidation, the percentage of DNA fragmentation using the method of TdT-mediated nick end labelling (TUNEL) by flow cytometry were determined after 2 hours incubation. Results: The action of ROS on bovine spermatozoa resulted in a decreased in capacity for sperm motility, Ca-ionophore induced acrosome reaction and membrane integrity, an increased in malondialdehyde formation and the percentage of sperm with DNA fragmentation. In the effects of antioxidant, catalase completely alleviated the toxic effects induced by the ROS in terms of sperm function and characteristics, however SOD exhibited no capacity to reduce the toxic effects. Conclusion: The ROS can induce significant damages to sperm functions and characteristics. The useful ROS scavengers can minimized the defects of sperm function and various damages of spermatozoa.

아세톤 광분해를 이용한 Molecular Tagging Velocimetry

이은도(Uen Do Lee),신현동(Hyun dong Shin),Jonathan H. Frank,Sebastian A. Kaiser 한국연소학회 2008 KOSCOSYMPOSIUM논문집 Vol.- No.-

Acetone molecular tagging velocimetry (MTV) was studied in a mini-jet configuration. Radial profile of the axial velocity at 2 ㎜ duct outlet is measured using acetone MTV. For the measurement, acetone is seeded into the flow, and a pulsed ArF (λ = 193 ㎚) excimer laser photodissociates the acetone along a narrow line. The excimer laser "tag" a line that is deficient in acetone and the line is "read" by planar laser fluorescence (PLIF) imaging of acetone using the frequency-doubled dye laser for excitation. This line is convected with the flow, and its displacement is measured from a pair of PLIF images acquired with different delay times between the excimer and dye lasers. The axial velocity is extracted from the cross correlation of the two PLIF images.

산모의 모유수유 적응과 모유 내 면역물질에 영향을 미치는 심리사회적 요인

김은숙 ( Kim Eun Sook ),정미조 ( Jeong Mi Jo ),김수 ( Kim Sue ),신현아 ( Shin Hyun A ),이향규 ( Lee Hyang Kyu ),신가영 ( Shin Kayoung ),한지희 ( Han Jee Hee ) 여성건강간호학회 2014 여성건강간호학회지 Vol.20 No.1

Purpose: This study was to identify relationships of maternal psychosocial factors including mother`s mood state, childcare stress, social support and sleep satisfaction with breastfeeding adaptation and immune substances in breast milk, especially secretory immunoglobulin A (sIgA) and transforming growth factor-beta 2 (TGF-β2). Methods: Data were collected from 84 mothers who delivered full-term infants by natural childbirth. Structured questionnaires and breast milk were collected at 2~4 days and 6 weeks postpartum. Data were analyzed using descriptive statistics, Pearson`s correlation, multiple linear regression, and generalized estimating equation (GEE). Results: Scores for the breastfeeding adaptation scale were significantly related with child care stress, mood state and social support. Mother`s anger was positively correlated with the level of sIgA in colostrum (p<.01). Immune substances of breast-milk was significantly influenced by time for milk collection (p<.001) and the type of breastfeeding (sIgA, p<.001,TGF-β2, p=.003). Regression analysis showed that breastfeeding adaptation could be explained 59.1% by the typeof breastfeeding, childcare stress, the Profile of Mood States, emotional support and sleep quality (F=16.67, p<.001). Conclusion: The findings from this study provide important concepts of breastfeeding adaptation program and ex-planation of psychosocial factors by immune substances in breast milk. Future research, specially, bio-maker re-searchon breast milk should focus on the ways to improve breastfeeding adaptation. Key Words: Breastfeeding, Human milk, Adaptive behavior, Immunologic factors, Psychosocial factors

대전시 주택의 내부공간 관계에 관한 소고

송용호,박주환,신현아 忠南大學校 産業技術硏究所 1988 산업기술연구논문집 Vol.3 No.2

The aim of this study is to analyze the internal space relationship and the organization of houses that has built in Taejon since 1970. In this study, the selected factors for analysis are interlocking spaces, adjacent spaces, and spaces linked by a common space. The result of analysis shows that personal spaces are enlavged by occupant's convenience. This study is to be a basic data for detached houses design.

기혼여성의 라이프스타일 유형별 의복의 과시적 소비

조필교,신현아 한국의류산업학회 2001 한국의류산업학회지 Vol.3 No.3

The purpose of this study was to investigate general conspicuous consumption tendency of married women and to identify differences of the conspicuous consumption according to their lifestyle and socio-demographic variables. The data were collected via self-administered questionnaires from 423 married women (20 to W years old) in Daegu Metropolitan City Data were analyzed by factor analysis, reliability analysis, frequencies and one-way ANOVA. Main results of this study are as follows : (a) Married women's tendency of the conspicuous consumption of clothing was generally low, (b) The more consumption-, achievement-orientated they were, the higher was the tendency to the conspicuous consumption of clothing. The more economy-, family- orientated they were, the lower was the tendency to the conspicuous consumption of clothing, (c) The younger they were, the more fashion-oriented they were and they showed the tendency of spending their money excessively to acquire clothing. The higher educational qualifications and household income were, the higher was the tendency of spending disposable income on clothing.