• Title/Summary/Keyword: 소재 정보

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A Study on Development of Model Materials Showing Similar Flow Characteristics of Hot Mild Steel at Various Temperatures (고온 연강 유동특성을 상사하는 모델재료 개발에 관한 연구)

  • 이종헌;김영호;배원병;이원화
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.17 no.5
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    • pp.1161-1171
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    • 1993
  • Model materials are developed to achieve similarity of flow patterns for mild steels in forming processes at high temperatures. The model materials consist of pure plasticine and one or two additives such as resin and lanolin. To verify the similarity of flow patterns between physical modeling and compression of mild steels at high temperatures, ring and compression tests have been carried out with the developed-model materials at various strain rates, temperatures and lubricants. The test results are in good agreement with the flow patterns obtained from upsetting of a mild steel at high temperatures.

Selection of Suitable Cultivars for the Hydroponics of Sweet Pepper (Capsicum annuum L.) in the Alpine Area in Summer (착색단고추 고랭지 하계 수경재배용 품종 선발)

  • Won, Jae-Hee;Jeong, Byung-Chan;Kim, Jong-Kee;Jeon, Shin-Jae
    • Journal of Bio-Environment Control
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    • v.18 no.4
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    • pp.425-430
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    • 2009
  • This experiment was investigated to select suitable cultivars for the hydroponics of sweet pepper in the alpine area in summer. Sweet pepper plants were grown in the greenhouse in Jinbu (550m above sea level), Pyungchang, Korea. Seeding and transplanting of the 12 sweet pepper cultivars were done in February and April, respectively. The sweet pepper fruits were harvested every week from July to November. Seven cultivars were chosen from the 12 tested cultivars. 'Special' and 'Cupra' for red, 'Boogie', 'Fellini' and 'President' for orange, and 'Fiesta' and 'Derby' for yellow had more fruit sets, the more percentage of standardized products for the export to Japan, and higher yield than the other cultivars. This result has shown various characteristics among or within the cultivars. This study would provide the basic database of cultivars and give the information about control vegetative and reproductive growth to the farmers cultivating sweet pepper.

Development of 2D Patterns for Cycling Pants using 3D Data of Human Movement and Stretch Fabric (동작시 3D 정보를 이용한 2D 패턴 전개 및 신축성 원단의 신장률을 고려한 사이클 팬츠 개발)

  • Jeong, Yeon-Hee;Hong, Kyung-Hi
    • Korean Journal of Human Ecology
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    • v.19 no.3
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    • pp.555-563
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    • 2010
  • With recent advances in 3D scanning technology, three-dimensional (3D) patternmaking is becoming a powerful way to develop garments pattern. This technology is now applicable to the made to measure (MTM) system of both ordinary and tightly fitting garments. Although the pattern of fitted clothing has been developed using 3D human data, it is still interesting to develop cycling pants by considering while-cycling body posture and fabric elasticity. This study adopted the Garland's triangle simplification method in order to simplify data without distorting the original 3D scan. Next, the Runge-Kutta method (2C-AN program) was used to develop a 2D pattern from the triangular pixels in the 3D scanned data. The 3D scanned data of four male, university students aged from 21 to 25, was obtained using Whole body scanner (Model WB4, Cyberware, Inc., USA). Results showed the average error of measurement was $4.58cm^2$ (0.19%) for area and 0~0.61cm for the length between the 3D body scanned data and the 2D developed pattern data. This is an acceptable range of error for garment manufacture. Additionally, the 2D pattern developed, based on the 3D body scanned data, did not need ease for comfort or ease of movement when cycling. This study thus provides insights into how garment patterns may be developed for ergonomic comfort in certain special environments.

Development of Preliminary Hazard Ranking System for Underground Storage Tanks Using Geographic Information System (GIS) (GIS를 이용한 지하저장탱크의 위해성 예비평가체계 개발)

  • 황상일;이상훈;이동수
    • Journal of the Korean Society of Groundwater Environment
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    • v.4 no.3
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    • pp.122-129
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    • 1997
  • Spills or leaks of hazardous organic. compounds from underground storage tanks (USTs) are common contaminant sources of soil and groundwater. It would aid in managing USTs to assess and rank the potential environmental hazard posed by the USTs. Therefore, a preliminary hazard ranking system of USTs is developed in this study. The system is combined with GIS and consists of five steps: 1) selection of significant factors, 2) determination of the hierarchy of the factors. 3) determination of the weights, 4) calculation of the potential hazard, and 5) hazard assessment. The system is applied to the gas stations in Kwanak-gu, Seoul. The results indicate that the gas stations can be categorized in three groups as highly hazardous, less highly hazardous, and weakly hazardous. Seven gas stations belong to the highly hazardous group. Through the sensitivity analysis, four stations appear to possess high hazard potentials regardless of weights assigned to the factors. It appears that a user can make flexible application of the hazard ranking system with the user's experience and particular purposes. However, the system still needs validations against field survey data.

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Spider Fauna of Mt. Gajisan in Gyeongsangnam-do, Korea (가지산의 거미상)

  • Lee, Sue-Yeon;Kim, Seung-Tae;Jung, Jong-Kook;Yoo, Jeong-Seon;Lee, Joon-Ho
    • Korean Journal of Environmental Biology
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    • v.28 no.2
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    • pp.108-113
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    • 2010
  • Spider fauna of Mt. Gajisan in Miryang, Gyeongsangnam-do was investigated from June to October. Collecting spiders was made by sweeping, beating, sieving and pitfall trapping. Total 66 species of 59 genera belonging to 20 families were identified from 317 collected spiders. Species richness was high in Salticidae (12 species, 20.0%), Theridiidae (8 species, 12.1%), Linyphiidae (5 species, 7.6%), Araneidae, Corinnidae, Gnaphosiade and Thomisidae (4 species, 6.1% repectively), Tetragnathidae, Amaurobiidae and Philodromidae (3 species, 4.5% repectively). Zoogeographical species were 1 Pantropical species (1.5%), 4 Palearctic species (6.1%) and 3 Korean endemic species (4.5%). This result will be a valuable monitoring data in comparative study of mountain spiders.

A Study on the Analysis of Fashion Trends in 1990s -Focus on the Themes of Womens'Fashion- (1990년대 패션트렌드 분석연구 -여성패션의 테마를 중심으로-)

  • Nahm, Jae-Kyung;Geum, Key-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.9
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    • pp.1645-1654
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    • 2001
  • 패션은 지속적으로 변화하며 이는 새로운 패션 트렌드의 출현을 의미한다. 특히 지난 1990년대 패션은 사회, 과학, 경제, 문화 등 사회환경의 급격한 변화로 새롭고 다양한 가치의 추구로 패션분야에서도 새로운 것에 대한 욕구가 급증하였다. 따라서 본 연구는 1990년대 패션 트렌드를 분석하여 패션의 특성을 파악하여 미래의 패션을 예측하고 대응하기 위한 자료를 구축하는 것을 목적으로 하였다. 패션트렌드는 향후 예측되는 유행테마, 스타일, 색채 , 소재 , 디테일 등을 제시하고 있는데 , 본 연구에서는 시대상을 보다 심층적으로 파악하기 위하여 패션테마만을 집중적으로 분석하고 고찰하였다. 일반적으로 패션테마로 제시되는 개념 이 나 용어들은 동시대의 사회현상과 패션 분야에서 요구될 것으로 예상되는 내용이 비교적 자유분방하게 제 시 하고 있으므로, 패션 테마의 분석과 고찰은 패션의 실체를 이해하는데 매우 유용하다 하겠다. 따라서 본 연구에서는 패션테마로 제시된 용어들을 수집하고 분석하여 , 패션경향는 물론 패션의 실체를 파악하고자 하였다. 연구 대상은 1990년대 10년간의 패션트렌드로 설정했으며, 분석자료는 구체적으로 국내패션정보사인 K·F·S와 S· F·I에서 제시한 트렌드지를 사용하였다. 연구결과 1990년대 패션은 종래의 상식적인 디자인 개념을 넘어서서 여러 가지 다채로운 스타일들이 역사적 시간과 여러 문화의 공간을 오가며 교류되는 포스트모더니즘적 인 특성을 강하게 나타냈으며 , 이러한 경향은 매우 깊고 광범위하게 1990년대 의 패션트렌드에 반영되어 나타났다. 최근의 첨단 과학 기술의 발달과 이에 반하는 자연으로의 회귀욕구와 인간의 본질을 추구하는 인식의 전환 또한 패션 트랜드에 영향을 주었다. 이들을 포용하는 패션 주제는 크게 자연주의, 세계주의, 미래주의, 복고주의 등으로 분석되었다. 이 와 같은 패션 테마들은 각각 독립 적 이 기보다는 서로 상호 보완하고 조화를 이루는 가운데 1990년대 패션으로 형상화되었다. 이러한 1990년대 패션 경향의 분석 결과는 동시대의 사회상을 반영하는 동시에 패션의 특징인 주기성과 반복성을 그대로 보여주고 있었다. 이러한 연구 결과는 패션의 특징을 파악하고, 21세기 패션 경향을 보다 정확하게 예측하고 제시할 수 있는 중요한 자료로 사용될 수 있을 것으로 기대한다.

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서울시 고등학생의 에이즈에 대한 낙관적 편견

  • Son, Ae-Ri
    • Proceedings of The Korean Society of Health Promotion Conference
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    • 2009.05a
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    • pp.96-96
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    • 2009
  • 본 연구는 서울시 고등학생을 대상으로 에이즈에 대한 낙관적 편견을 인구 사회적 특성에 따라 파악하고, 에이즈 지식, 에이즈에 대한 낙인 및 사회적 거리감 등의 변수, 관연도와 낙관적 편견과의 관련성을 확인함으로써 에이즈 예방교육 및 메시지 개발에 도움을 주고자 한다. 본 연구에서 조사 대상 모집단은 서울시 소재 고등학생이 대상이다. 표집은 인문계 고등학교 6개교와 실업계 고등학교 2개교를 지역별로 무작위로 추출한 후 각 학년별로 2개 반을 무작위로 뽑아 그 반을 모두 조사하는 방법을 이용하였다. 총 1537부의 설문지가 배포되어 모두 수거되었으며. 이 중 응답이 불성실한 설문지 21부를 제외한 총 1,516부(98.1%)가 분석에 사용되었다. 본 연구의 주요결과는 다음과 같다. 첫째, 에이즈 감염에 대한 낙관적 편견이 있는 것으로 나타났다. 둘째, 낙관적 편견에 대한 인구 사회적 특성을 살펴보면 여학생이 남학생 보다(p<.05), 성적이 상, 중인 학생이 하인 학생보다(p<.05) 유의하였다. 셋째, 낙관적 편견과 에이즈 지식 간에는 유의하지 않았다. 낙관적 편견과 관여도는 부의 상관관계를 보여 관여도가 클수록 낙관적 편견이 감소하는 것으로 나타났으며, 자기존중감과 자기통제감이 클수록 낙관적 편견이 큰 것으로 나타났다((r=.17, p<.01, r=.25, p<.01). 넷째, 에이즈에 관한 낙관적 편견에 미치는 영향력을 검토한 결과 성별, 성적은 낙관적 편견에 유의하지 않았으나 관여도, 자기존중감 및 자기통제감은 유의하였다($R^2$=.112, F=31.655) 결론적으로 관여도, 자기존중감, 자기통제감은 에이즈에 대한 낙관적 편견에 영향을 미치는 요인임이 확인 되었다. 이러한 결과는 청소년들을 대상으로 하는 에이즈 예방교육을 계획할 때에 단순히 정보나 지식을 전달하는 것뿐만 아니라 그들이 갖고 있는 신념과 행동을 변화시키는 여러 요인들에 대하여도 충분히 검토해 볼 필요성이 있음을 시사한다.

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A Study on the Effect of the Empathy Reading Education on Empathy Ability and Emotional Intelligence (공감독서교육이 공감능력과 정서지능에 미치는 영향에 관한 연구)

  • Song, Jiae;Cho, Miah
    • Journal of Korean Library and Information Science Society
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    • v.49 no.1
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    • pp.267-292
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    • 2018
  • The purpose of this study is to develop an empathy reading education program and to investigate the effects of elementary school students on empathy ability and emotional intelligence. First, in order to select realistic empathy topics for the empathy reading education program, 10 specialist groups were selected and the focus group interview was conducted as well. 10 expert in the development of the empathy reading education program and 12 experts for selecting the importance of the empathy reading education textbook verified the reliability and validity through Delphi investigation and analysis. Second, in order to verify the effects, the empathy reading education program was studied and conducted on 104 grade 5 students in 'A' elementary school in U city, Gyeonggi-do. In conclusion, the empathy reading education program has a positive effect on the empathy ability and emotional intelligence of elementary school students.

Perception on Expectation of Prosthetics and Implant of Workers in Ulsan (울산지역 근로자의 보철물과 임플란트의 기대수준에 대한 인식)

  • Cho, Mi-Suk;Kim, Chang-Suk
    • The Journal of the Korea Contents Association
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    • v.14 no.5
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    • pp.281-288
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    • 2014
  • This study has surveyed patient education and counseling, based on the data you want to utilize the expectations on dental prosthetic appliances (denture, bridge) and implants among 307 workers who participated in reservists mobilization training of Hyundai Heavy Industries located in Ulsan City. The reliability of expectations on dental prosthetic appliances and implants were fairly high at cronbach'${\alpha}$ of .971 and .967 respectively. The collected data was analyzed through IBM SPSS Statistics. v. 19.0 program at the significance level of 0.05. The research findings are as follows. First, the expectations on prosthetic appliances scored an average of 3.98. Second, the expectations on implants scored an average of 3.74. Third, the expectations on implants depending on subjective health status scored an average of 3.74, which were statistically significant (p=0.003). Fourth, the differences in expectations on implants depending on the concerns for oral hygiene care scored an average of 3.74, which were statistically significant (0<0.001). Fifth, the expectations on prosthetic appliances and implants were strongly correlated at 0.392. As a result of implants of prosthodontics need for accurate information transfer.

Empirical Verification of the Korean Occupational Stress Scale in Physical Therapist (한국인 직무스트레스 측정도구에 관한 실증적 연구: 물리치료사를 대상으로)

  • Hwang, Ryong;Myoung, Sungmin
    • The Journal of the Korea Contents Association
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    • v.14 no.11
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    • pp.849-857
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    • 2014
  • Occupational Stress is defined the stress which occurs in the workplace or organization. In Korean workers, the rate of occupational stress was 87.8% which was the highest level among OECD countries(average 80.0%). The purpose of this study was to examine the empirical verification of the Korean Occupational Stress Scale(KOSS) in physical therapists. For this purpose, the subject of this study was set up physical therapists who were working at Gyeonggi province and collected from 388 persons by using purposive sampling. The collected data was conducted explanatory factor analysis and confirmatory factor analysis in order to ascertain factor structure and practical verification of KOSS. Major results were as following: first, the reliability of KOSS was 0.83, and it means that a measure of internal consistency is high. Second, the KOSS result of physical therapists was composed 7 subscales(job demand, insufficient job control, job insecurity, interpersonal conflict, occupational system and lack of reward, organizational climate) and that is more appropriate measurement scale than the original one by using explanatory/confirmatory factor analysis. This study could be contributed as a tool for evaluation and outcome of the basic information of related occupational stress in physical therapists.