Strain Distributions of Plane-Strained and Simple-Sheared Al–Mg Alloy

Hyeon‑Woo Son,Jae‑Cheol Lee,Hyun Soon Park,Soong‑Keun Hyun 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.11

Strain distribution in plane-strained (rolling) and simple-sheared (torsion) Al–Mg alloy has been estimated using both X-rayline profile analysis and electron backscatter technique. The strain analyses under unified texture distribution by orientationrotation showed that torsion has relatively homogeneous strain distribution regardless of texture component in contrast toinhomogeneous strain in rolling. In addition, annealing texture of torsion has more random texture than inhomogeneousrolling texture. Lower texture difference index in annealed torsion specimens suggest homogeneous strain distribution insimple shear has a higher resistance to strain-induced boundary migration, which has been known to be main reason forstrong development of ND||⟨100⟩ component during annealing of rolled Al sheet.

수도권 지역 대학병원과 재활병원의 인턴물리치료사간 인턴 만족도 비교

강순희,전수진,정민현,정은송,이범승,최용진 韓國交通大學校 2013 한국교통대학교 논문집 Vol.48 No.-

The purpose of this study was to compare internship satisfaction of intern physical therapists working in the university hospitals with that of them working in the rehabilitation hospitals in Seoul metropolitan area. The questionnaire for internship satisfaction survey that amended from vocational interest test [Strong Interest Inventory(SII)] was used to examine satisfaction of intern physical therapists and the questionnaire was used to ask general characteristics, educational and work environment. Thirty nine intern physical therapists working in university hospital and fifty nine intern physical therapists rehabilitation hospital in Seoul metropolitan area responded. Frequency analysis, χ² test and independent t-test were conducted to evaluate differences between groups about variables of internship satisfaction survey, general characteristics, work and educational environments with using the PASW 18.0 statistical program. The results of the study were as follows. There were significant differences of intern physical therapists between university hospitals and rehabilitation hospitals in overall scores of internship satisfaction and scores of all sub-items such as duty, supervision, working condition, work mates and wages. Intern physical therapists working in the university hospitals showed higher satisfaction than that of Intern physical therapists working in the rehabilitation hospitals.

학교 지역문화교육을 위한 지역협의체 구성에 관한 연구

김영순,임지혜,배현주 한국문화교육학회 2011 문화예술교육연구 Vol.6 No.2

The aim of this study was to search conditions activating the regional consortium for regional culture education in schools. Results of this study are follows: the regional consortium consists of parents of students, communities, schools, school boards, public institutes, and NGO groups. The consortium contribute the educational support and development for student activities in schools. Furthermore the consortium make an offer to coordinate and facilitate the delivery of information, resources, and services to students, educators, employers, and the community. Therefore, the consortium might be best described as "matchmakers" that help ensure that our customers are able to easily connect with providers of the services they need. The consortium will be made up of a network of service providers from across its region that all collaborate in helping to connect the local education and school communities. 본 연구에서는 지역 사회의 인적·물적 자산을 활용한 문화적 체험활동 교육이 활성화되고 정착되기 위한 방안으로 학교와 지역사회가 밀접한 관계를 형성할 수 있는 지역협의체를 구성하는 안을 제시하였다. 이를 위해 지역문화교육에 필요한 지역협의체에 대한 문헌연구를 수행하였고, 이와 유사한 실제 사례를 찾아 관련 전문가를 대상으로 한 심층인터뷰 결과를 정리하고 시사점을 도출하였다. 연구결과, 지역협의체는 지역특수성, 전문성, 개방성, 공공성, 지속성의 기본원칙을 전제로 하여 교육행정기관, 지자체 행정기관, 민간 및 공공기관, 학교 등의 협력을 통해 구성될 수 있다. 또한 지역에서의 문화적 체험활동의 효율적인 운영을 지원하기 위해 1) 지역사회 내 교육기부 협력기관을 모색 및 발굴·연계, 2) 지역의 교육 인프라 접근성 향상, 3) 지역의 문화 교육 자원 간 네트워크 확장, 4) 지역 내 긍정적인 담론 형성을 위한 홍보 및 인식 개선, 5) 지역문화교육 프로그램 수행 과정의 성찰 등의 역할을 수행해야 한다. 지역협의체를 통한 학교와 지역교육자원의 연계 방안은 교육자원의 유형과 교육운영 주체에 따라 분류될 수 있었고, 강동구청과 대구광역시교육청의 예를 통해 지역문화교육 지원의 구체적인 사례를 살펴볼 수 있었다. 이와 같이 본 연구에서 제안한 지역협의체의 구성은 지역문화교육의 활성화를 위한 초석을 마련해 줄 것이라고 기대해 본다.

발생 초기 닭 배자의 형태학적인 변화와 aminin과 fibronectin의 분포

김현,김순옥,김강련 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.6

안면비대칭 진단을 위한 하악골 3차원영상 계측기준치에 관한 연구

안정순,이기헌,황현식 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.2

기존의 2차원적 진단자료는 상의 확대 및 왜곡으로 인해 형태나 크기의 정량적 평가시부적절한 결과를 야기할 수 있어 안면비대칭의 정확한 진단과 치료계획 수립을 위해서는 3차원영상 진단의 도입이 필요하다. 본 연구는 안면비대칭 진단시 3차원적 분석에 도움이 되는 기준자료를 얻고자 정상교합자를 대상으로 하악골 3차원영상 계측항목의 평균값과 좌우차이의 정상범주를 알아보기 위하여 시행되었다. 뚜렷한 안면비대칭을 보이지 않는 성인 정상교합자 남녀 30명씩 총60명을 대상으로 두경부 전단화단층사진을 촬영한 후 컴퓨터 프로그램을 이용한 각각의 단면 촬영영상 정보를 이용하여 3차원 입체영상을 재구성한 다음, 하약골 비대칭시 좌우차이를 보일 수있는 계층항목 ramus length를 나타내는 6개 condyla neck length를 나타내는 1개, mandibular body length를 나타내는 8개 등 15개의 거리 계층항목과 gonial angle을 나타내는 4개, frontal ramal inclination을 나타내는 2개, lateral ramal inclination을 나타내는 2개 등 8개의 각도계층항목. 총 23개의 계층항목을 설정한 후, 좌측과 우측을 구분하여 컴퓨터 상에서 3차원계측치를 구하고 좌우차이값을 산출하였다. 본 연구결과 얻어진 정상교합자의 하악골 3차원영상 계층항목의 좌우차이값은 안면비대칭 환자의 진단 기준치로 유용하게 사용될 수 있을 것이다. For an accurate dlagnosis and treatment planning of facial asymmetry, the use of 3-dimensional(3-D) image is indispensable. The purpose of this study was to get standard data for the 3-D analysis of facial asymmetry.Computerized tomography(CT) was taken in the 60 normal occlusion individuals (30 male, 30 female) who did not have any apparent facial asymmetry. The acquired 2D CT DICOM data were input on a computer, and the reformatted 3-D images were created using a 3-Dimage software. Twenty three measurements were established in order to evaluate asymmetry:15linear measurements (6 for ramus length, 1 for condylar neck length, and 8 for mandibular body length) and 8 angular measurements (4 for gonial angle, 2 for frontal ramal inclination, and 2 for lateral ramal inclination). The right and left difference of each measurement was calculated and analyzed. Itis suggested that the right and left differences of the measurements obtained from the study could be used as references for the diagnosis of facial asymmetric patients.

안면비대칭에 대한 주관적 인지도와 정모두부방사선사진 분석치의 연관성

안정순,황현식,김창수,김경근 전남대학교 치의학연구소 2001 구강과학 Vol.13 No.3

This study was aimed how posteroanterior cephalometric measurements affect the perception of the patient about his/her facial asymmetry. One hundred orthodontic patients, over the age of 12, who required a posteroanterior cephalogram in the Department of Orthodontics of Chonnam National University Hospital were used as the subject. They were asked if they thought their faces are asymmetrical. Their responses were classified into 5 groups based on the level of asymmetry as follows : Definitely No, Probably No, Don't Know. Probably Yes, Definitely Yes. Nine linear and four angular measurements from each posteroanterior cephalometric radiographs were analysed on the standard of the line between crista galli and anterior nasal spine to show the extent of asymmetry. Through this comparative study, the following results were obtained. 1. As the deviation of menton and the midline discrepancy of the upper and lower jaws were greater, the perception of patients about their facial asymmetry was higher. 2. All the measurements from the group "Don't Know" showed no statistical difference with those of the groups "Definitely No" or "Probably No." 3. All the measurements from the group "Probably Yes" showed no statistical difference with those of the group "Definitely Yes." The above results suggest that it may be helpful for the orthodontic diagnosis to ask patients' perception of their own facial asymmetry.

호남대학교 재학생의 성의식 실태조사

남순현 호남대학교 2008 학술논문집 Vol.29 No.1

This study examined the opposite-sex-relationship, sexual knowledge, sexual meaning, sexual attitude, experiences of sexual assault, and coping strategies with sexual assault among Honam University Students. For the purpose of present study, the sample consisted of 986 Honam University Students and researched from September 1 to October 17, 2008. The result of the paper was as follows. Honam University Students responded that the most important reason for sex was affection. Students who had experienced sexual intercourse and male students had significantly more positive sexual meanings than their counterparts. Also several students had experienced sexual assault. Honam University Students had low awareness about sexual assault, but acknowledged an appropriate coping strategy with sexual assault.

수용자의 광고태도가 광고회피에 미치는 영향

소현진,박범순 한국방송광고공사 2008 광고연구 Vol.0 No.78

광고회피 행위에 영향을 주는 요소들에 대한 연구는 꾸준히 이루어져 왔으며, 그 중 수용자의 광고에 대한 태도(attitude toward advertising in general)가 광고회피의 주요한 선행요인 중 하나로 제시되고 있다. 그러나 광고태도는 다양한 하위요소를 포함하는 다차원적 개념이라는 기존 연구에도 불구하고 아직 다차원적 개념으로서의 광고태도를 광고회피 연구에 도입하는 시도는 매우 드물다. 따라서 본 연구는 (1)광고태도를 구성하는 각 하위요소들과 광고회피와의 관계를 분석하고, (2)광고태도의 하위요소들 중 어떤 요소가 광고회피를 예측하는 데 가장 유용한 변인인지를 알아보고자 한다. 또한 (3)각 하위요소들과 광고회피 간의 관계가 수용자의 인구통계학적 특성에 따라 달라지는지를 탐색적으로 연구해보고자 하였다. 연구 결과를 요약하자면 첫째, 광고의 사회적인 영향에 대한 평가 및 경제적인 영향에 대한 평가는 광고회피와 약한 부(-)적 상관관계를 보였다. 둘째, 광고의 개인적인 효용성 중 광고의 정보적인 유용성은 광고회피에 유의미한 영향을 미쳤다. 그러나 광고의 쾌락적인 유용성에 대한 평가는 광고회피에 통계적으로 의미 있는 영향을 미치지 않았다. 또한 광고의 거시적 효과와 개인적 효용성에 대한 평가 차이에 대해서는 광고의 거시적 효과에 대한 평가보다는 광고의 개인적 효용성에 대한 평가가 광고회피를 예측하는 데 더 유용한 변인으로 나타났고, 개인적 효용성에 대한 평가 중에서도 정보적인 유용성에 대한 신념이 광고회피에 대한 가장 효과적인 예측변인이라는 결과를 보였다. 이러한 광고태도와 광고회피 간의 관계는 응답자의 인구통계적인 속성에 관계없이 일관되게 나타났다. Attitude toward advertising in general(AG) has been considered one of important antecedents of advertising avoidance. Although it has been well-documented that AG is a multi-dimensional construct containing several sub-factors, it is rare to investigate the relationship between individual attitude factors and ad avoidance. The objectives of this study are (1) to examine the relationship between attitude factors and advertising avoidance; (2) to investigate which attitude factor is the strongest predictor of ad avoidance; and (3) to explore whether the relationship of attitude factors and ad avoidance varies depending on demographic variables. The data were collected from a mail survey of general American adult consumers. Results show that all attitude factors, including consumer perception on advertising’s economic effect, societal effect, informational usefulness, and hedonic usefulness, are significantly and negatively correlated with ad avoidance. However, ANOVA analyses found only consumer perception on advertising’s economic effect and informational usefulness have significant influence on ad avoidance. The pattern of relationship between individual attitude factors and ad avoidance was consistent across different age and gender groups. Hierarchical regression analysis discovered consumer perception on personal use of advertising is the more powerful predictor of ad avoidance than the perception on economic/societal effect of advertising. Among informational usefulness and hedonic usefulness which together measured consumer perception on personal use of advertising, informational usefulness was found to be the strongest predictor of ad avoidance. Theoretical and practical implications of this study were finally discussed.

향신료의 젖산균에 대한 항균력 비교 연구

정현진,김미경,김미정,김순동 대구효성가톨릭대학교 식품과학연구소 1997 식품과학지 Vol.9 No.-

32종의 향신료를 물, 에탄올, 에틸에테르 및 에틸아세테이트로 추출하여 김치의 주발효균인 L. plantarum과 Leu. mesenteroides에 대한 항균력을 조사하였다. L. plantarum에 대한 항균력은 물 추출물에서는 caraway, cardamon, paprika, tarragon을 제외한 28종에서 항균력이 있었으며, 에틸에테르추출물에서는 arrowroot, paprika 및 tarragon을 제외한 29종이 항균력이 있었다. 에틸아세테이트추출물에서는 paprika 및 tarragon을 제외한 30종이 항균력이 있었으며, 에탄올추출물에서는 clove, paprika와 tarragon을 제외한 29종이 항균력을 나타내었다. Leu. mesenteroides에 대한 항균력은 물추출물에서는 caraway, cardamon, paprika 및 thyme을 제외한 28종에서 항균력을 나타내었으며, 에틸에테르추출물에서는 cardamon, cumin, paprika, tarragon 및 thyme을 제외한 27종이 항균력을 나타내었다. 에틸아세테이트추출물에서는 paprika 및 thyme을 제외한 30종이 항균력이 있었으며, 에탄올추출물에서는 cardamon, cumin, paprika 및 thyme을 제외한 28종이 항균력이 있었으며, 그 중 arrowroot, basil, garlic과 turmeric이 비교적 우수하였다. Leu. mesenteroides에는 항균력이 없으나 L. plantarum에는 높은 항균력을 가지는 것으로는 thyme 물추출물, cardamon, cumin 및 thyme의 에탄올추출물과 에틸에테르추출물, thyme의 에틸아세테이트추출물 등이었다. L. plantarum에 대하여 항균력을 나타내는 thyme 물추출물과 Leu. mesenteroides에 대하여 항균력을 나타내는 tarragon 물추출물을 첨가한 김치의 보존성을 조사한 결과 thyme 물추출물을 첨가한 경우에서 보존성과 품질면에서 양호하였다. 그 중 L. plantarum에 항균력이 있는 thyme 물추출물 첨가한 김치가 보존성 뿐만 아니라 맛에 있어서도 우수한 효과를 나타내었다. Antimirobial activities of 32 kinds of spices extracts on microorganisms related to kimchi fermentation were investigated. 32 kinds of spices such as allspice, arrowroot, basil, bay leaves, caraway, cardamon, celery, chilli powder, chives, cinnamon, clover, coriander, cumin, dill, fennel, garlic, horseradish, marjorarm, mugwort, mustard, nutmeg, onion, oregano, paprika, parsely, pepper, peppermint, rosemary, sage, tarragon, thyme and turmeric were extracted with water and serveral organic solvents such as ethylether, ethylacetate and ethylalcohol. Fractions were tested for antimicrobial activities against L. plantarum and Leu. mesenteroides. The extract of 28 kinds of spices except caraway, cardamon, paprika and tarragon by water extraction, those of 29 kinds except arrowroot, paprika and tarragon by ethylether extraction, those of 30 kinds except paprika and tarragon by ethylacetate extraction, and those of 29 kinds except clover, paprika and tarragon by ethylalcolhol extraction showed stong antimicrobial activities against L. plantarum. On the other hand, the extracts of 28 kinds of spices except caraway, cardamon, paprika and thyme by water extraction and those of 27 kinds except cardamon, cumin, paprika, tarragon and thyme by ethylether extraction, and those of 30 kinds except paprika and thyme by ethylacetate extraction, and those of 28 kinds except cardamon, cumin, paprika and thyme by ethylalcohol extraction showed strong antimicrobial activities against Leu. mesenteroides. Thyme extract by water extraction especially showed strong antimicrobial activities against kimchi microorganisms, finally prolonging shelf-life and enhancing quality of kimchi. The results suggest the possible use of the spices extract as natural preservatives for kimchi.

크롬(Ⅵ)의 체내 흡수와 소실속도에 관한 연구

김현영,이성배,임철홍,이권섭,정용현,이종성,한정희,전윤석,황호순,이용묵 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

The CrO3 mostly used in plating. metal surface disposal, leather, cosmetic manufacturing, as an experiment material by repeatedly inhaling and exposure the male S.D. rats at a 0.00, 0.2., 0.50, 1.25 mg/㎡ concentration(particle size: 0.5-0.5 aerosol)6hours a day, 5day a week in 13weeks comparing with 2weeks, 8weeks of recovery group about the noxiousness of the experiment animal and the reduce scale of the CrO3 in the internal organ especially in blook and respiratory organ with the period of convalescent and clearance. The experiment results which we received are as follows. 1. In blood the RBC, HGB and HCT experiment, rats with 0.20, 0.50 mg/㎡ concentration showed that there were some decreases but not dependent. The kidneys absolute weight compared with control group was reduced intentionally(p〈0.05) and the lungs absolute weight compared with control group showed intentional increase(p〉0.05). 2. After the exposure of the experiment material, the whole blook, l\blood plasma and red blood cell in blood by (x): the period of convalescent, per (y); the decreasing of Cr concentration, was y=66.51 e -0.057x, y=67.2 e-0.101x, y=70.01 e-0.030 in 0.50 mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life (day)was estimated 12.0, 6086, 23.0 each. 3, After the exposure of the experiment material, the experiment animals lung, liver and kidneys by(x); the period of convalescent, per (y); the decreasing of Cr conentration, was y=1808 e-0.00493x, y=12.02e-0.0297x, y=67.61 e-0.0292x in 0.50mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life(day)was estimated 140.6, 23.3, 23.7, each, and including lung, liver with all of the experiment internal organs, the Cr clearance decreased as the exposure concentration increased.