• Title/Summary/Keyword: Fringe analysis

검색결과 239건 처리시간 0.024초

직무배태성의 구성요인이 혁신관련행동과 이직의도에 미치는 연구 (The Effect of Job Embeddedness Constructs on Innovation-related Behaviors and Turnover Intention)

  • 유영진
    • 한국식생활문화학회지
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    • 제26권6호
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    • pp.649-656
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    • 2011
  • The purpose of this study was to investigate how constructs of job embeddedness (fit, links and sacrifice) affected innovation-related behaviors. This study also investigated the relationship between innovation-related behaviors and turnover intention. The samples of this study were employees of Daegu City restaurants who visited the 2010 Daegu Food Tour Expo on October 7-10. A total of 302 questionnaires were analyzed with the statistical methods of factor analysis, reliability test, and covariance structural analysis. There were two findings of the research. First, we found that fits, links, and sacrifice were positively related to innovation-related behaviors. Second, we found that innovation-related behaviors were negatively related to turnover intention. Therefore, restaurant managers in Daegu City should pay attention to providing employee organization that helps them to first in, makes sure that they have lots of links with other employees, and bestows as many wage and fringe benefits as possible. Also, restaurant managers should reward the innovation-related behaviors of employees.

상사이론에 의한 실험 응력해법에 있어서 2,3의 문제

  • 최선호
    • 기계저널
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    • 제32권6호
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    • pp.496-503
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    • 1992
  • 상사실험법(analogous experimental method)이라 함은 물리적현상을 다른 물리적현상으로 변환 하여, 후자를 실험적으로 측정하여 전자의 제반 물리량을 얻는 과정을 말한다. 이 때 두 물리량 사이에는 수학적 상사관계, 특히 미분방정식 상의 유사관계가 성립함을 전제로 한다. 일반적으로 임의형상의 내부응력을 실험적으로 해석하는 데는 탄소성 변위를 직접 전기적저항으로 바꾸어 측정하는 방법(strain gauge method)이나 광파의 간섭무늬(fringe)로 가시화하는 광탄성 법(photoelastic method), 또는 전자계산기를 이용하여 분할요소해석의 연계집적으로서 얻는 유 한요소법(F.E.M) 등이 널리 사용되고 있으나, 이들은 다같이 그 나름대로의 장단점을 지니고 있다. 전기저항식은 변형을 직접 측정할 수 있어 측정의 오차를 줄일 수 있고, 특히 실물측정과 동하중 해석에는 큰 강점이 있으나, 점해석(point by analysis)이기 때문에 전시야적인 분포를 파악하기 어렵다. 또한 광탄성법은 명료한 전시야적 분포를 얻을 수 있지만 모형해석(model analysis)이기 때문에 정밀한 모형제작의 어려움이 수반되며, F.E.M.(B.E.M.도 포함)은 복잡한 형상에서의 요소분할이 매우 어렵고, 경계조건의 정확한 설정에 문제가 있다. 따라서 여러 실험적 방법은 실측대상에 따라 그 장단점을 감안하여 선택되어야 하며, 이 글에서 논술하고자 하는 상사실험법에 의한 응력해석도 이러한 관점에서 지금까지의 일련의 연구결과를 종합하여 그 효 용적인 용도, 응용 및 그 전망과 더불어 장차 해결하여야 할 2,3의 문제를 제시하고자 한다.

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유한요소 변위값을 이용한 인장하중 판재 균열선단 주위의 응력분포 해석 (Stress Distribution in the Vicinity of a Crack Tip in a Plate under Tensile Load Using Displacement Data of Finite Element Method)

  • 백태현
    • 한국정밀공학회지
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    • 제25권10호
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    • pp.84-91
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    • 2008
  • Due to the complexity of the engineering problems, it is difficult to obtain directly the stress field around the crack tip by theoretical derivation. In the paper, the hybrid method is employed to calculate full-field stress around the crack tip in uni-axially leaded finite width tensile plate, using the displacement data of given points calculated by finite element method as input data. The method uses complex variable formulations involving conformal mappings and analytical continuity. In order to accurately compare calculated fringes with experimental ones, both actual and reconstructed photoelastic fringe patterns are two times multiplied and sharpened by digital image processing. Reconstructed fringes by hybrid method are quite comparable to actual fringes. The experimental results indicate that Mode I stress intensity factor analyzed by the hybrid method are accurate within a few percent compared with ones obtained by empirical equation and finite element analysis.

직접유지장치 설계 변화에 따른 하악 후방연장 국소의치 지지조직의 광탄성 응력분석 (PHOTOELASTIC STRESS ANALYSIS ON THE SUPPORTING TISSUE OF MANDIBULAR DISTAL EXTENSION REMOVABLE PARTIAL DENTURE WITH VARIOUS DESIGN OF DIRECT RETAINERS)

  • 이창호;김광남;장익태
    • 대한치과보철학회지
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    • 제30권2호
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    • pp.203-224
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    • 1992
  • The purpose of this study was to evaluate the stress distribution developed in supporting structures by distal extension removable partial denture with 4-types of direct retainer. The direct retainers examined were Akers clasp, RPI clasp, RPA clasp and RPL clasp in bilateral & unilateral free end case. 3-dimensional photoelastic stress analysis was used to record the isochromatic fringe patterns and to calculate the compressive stress at measuring points. The results were as follows. 1. In bilateral free end case, RPI clasp exhibited the similar stress distribution on distal and mesial alveolar crest but Akers clasp exhibited higher stress concentration on distal alveolar crest than mesial alveolar crest. 2. In bilateral free end case, RPA clasp and RPL clasp exhibited the similar stress distribution on distal and mesial alveolar crest and RPL clasp exhibited higher stress concentration on buccal alveolar crest than lingual alveolar crest. 3. Akers clasp produced high stress concentration on residual alveolar ridge distally, but RPI clasp, RPA clasp and RPL clasp produced even stress distribution on residual alveolar ridge. 4. Removable partial denture in unilateral free end case exerted higher stress on abutment tooth root apex than bilateral distal extension removable partial denture.

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정밀 부착형 유지장치에 따른 양측성 유리단 국소의치의 광탄성 응력분석 (A Photoelastic Stress Analysis of Bilateral Distal Extension Removable Partial Denture with Attachment Retainers)

  • 조혜원;장익태
    • 대한치과보철학회지
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    • 제23권1호
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    • pp.97-112
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    • 1985
  • The purpose of this study was to evaluate the stress patterns developed in supporting structures by removable partial denture with attachment retainers. The attachments tested were Dalbo(miniature) attachment, resilient Ceka attachment, rigid Ceka attachment, precision and sleeve attachment, and R.P.I. clasp as a contrast. 3-dimensional photoelastic stress analysis was used to record the isochromatic and isoclinic fringe patterns and to calculate principal stress components at measuring points. The results showed that: 1. The maximum compressive stress on residual ridge was produced under the loading point with Dalbo and resilient Ceka attachment, distal to the loading point with rigid Ceka and precision and sleeve attachment, and mesial to the loading point with R.P.I. clasp. 2. The Dalbo attachment produced the most stress on residual ridge, and the least stress on abutment teeth. and resilient Ceka attachment showed favorable stress distribution. 3. Rigid Ceka attachment produced higher compressive stress on buccal. alveolar crest, and precision and sleeve attachment produced higher compressive stress on distal alvelolar crest and mesial surface of the root apex in abutment teeth. 4. R.P.I. clasp produced higher compressive stress on mesial alveolar crest.

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주유소 기반의 전기자동차 충전인프라 구축에 대한 취약지역 분석 (Analysis of Vulnerable Districts for Electronic Vehicle Charging Infrastructure based on Gas Stations)

  • 김태곤;김솔희;서교
    • 농촌계획
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    • 제20권4호
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    • pp.137-143
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    • 2014
  • Car exhaust emissions are recognized as one of the key sources for climate change and electric vehicles have no emissions from tailpipe. However, the limited charging infrastructures could restrict the propagation of electric vehicles. The purpose of this study is to find the vulnerable districts limited to the charging station services after meeting the goal of Ministry of Knowledge Economy(12%). We assumed that the charging service can be provided by current gas stations. The range of the vulnerable grades was determined by the accessibility to current gas stations and the vulnerable regions were classified considering the optimal number of charging stations estimated by the efficiency function. We used 4,827 sub-municipal divisions and 11,677 gas station locations for this analysis. The results show that most of mountain areas are vulnerable and the fringe areas of large cities generally get a good grade for the charging infrastructure. The gangwon-do, jeollanam-do, gyeongsangbuk-do, and chungcheongnam-do include more than 40% vulnerable districts.

Site Suitability Assessment for Joint Forest Management(JFM) - a Geospatial Approach

  • Jayakumar, S.;Ramachandran, A.;Bhaskaran, G.;Heo, Joon;Kim, Woo-Sun
    • 대한원격탐사학회지
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    • 제23권5호
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    • pp.473-481
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    • 2007
  • Joint Forest Management(JFM) is a concept of developing partnerships between fringe forest user groups and the Forest Department(FD) on the basis of mutual trust and jointly defined roles and responsibilities with regard to forest protection and development. In India, JFM was started during 1992 and it was implemented in many states. However success rate of JFM activity was not promising. Though there are many factors attributed to the failures, one of the main factors is the JFM site. This paper deals with the significant ground works to be done before planning for JFM using recent technologies such as remote sensing(RS) and Geographic Information System(GIS). Also it deals with the advantages of weighted overlay analysis in selecting suitable sites for JFM taking into consideration the various criteria. As a result of weighted overlay analysis, there were four types of suitability classes viz., less, moderate, highly and un-suitable. The moderately suitable class occupied maximum area(13209.64 ha) than less and highly suitable classes. If JFM is implemented on the suitability area, then the failure could be avoided in the future.

직류 전기철도의 교류화 분석 (Change analysis with A.C of D.C electric railway)

  • 김윤식;이기승;심재석
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 추계학술대회 논문집
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    • pp.151-156
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    • 2008
  • The after 1974 capital region electric railroad is opened to traffic Koraill and Seoul metro adopt each other different power supply method and they operate and they are come. AC 25[kv] method voltage the insulation becomes larger standing distance highly, the case tunnel section which will introduce in the underground segment becomes on a large scale and the cost of construction increases to the city center and the underground segment adoption of DC method was many. To recent times with R-bar (Rigid-bar) introductions change of tunnel section the introduction of AC method came to be easy without in the underground segment. Operates sees in the electric protection where the Seoul metro and the Korail are different each other and, from the dead section segment the interior electric light to put out lights the passenger brings about inconveniently and the civil appeal which demands a power supply method unification occurs, within the company interchange electric railroad brazier safety improvement and maintenance expense curtailment etc. the flaw is original proposal, is a condition which finishes a feasibility study service about the power supply method fringe land. Interchange analysis of the DC electric railway it leads from the present paper and it compares under analyzing being it could be reflected to also the route which is in the process of actual using boil the strong point and a weak point of DC and AC method of the establishment route constructive at the time of and

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Job Commitment in FDI Manufacturing Enterprises During the COVID-19 Pandemic: Empirical Evidence from Vietnam

  • LE, Quang Hieu;LE, Thi Thanh Thuy
    • The Journal of Asian Finance, Economics and Business
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    • 제9권4호
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    • pp.163-172
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    • 2022
  • The purpose of the study is to determine the impact of several factors on employees' job commitment in ten FDI manufacturing businesses in Vietnam's Nghi Son Economic Zone during the COVID-19 Pandemic. The researchers used reliability tests, exploratory factor analysis, confirmatory factor analysis, and structural equation modeling to confirm the relationships between factors when analyzing the effect of variables on job commitment in FDI enterprises. Based on a poll of 481 respondents, the test findings showed that 07 parameters have positive effects on job satisfaction. Professional assurance, compensation, fringe benefits, supervisor, promotion, coworkers, and working conditions all have varying levels of impact. Job satisfaction, in particular, has a significant and positive impact on employees' commitment to their jobs. According to research findings, the COVID-19 pandemic has been and continues to be a unique burden for Vietnamese firms in general and FDI manufacturing enterprises in Nghi Son EZ in particular. As a result, businesses must have appropriate HRM strategies to incentivize employees to recover, stabilize, and develop in the new normal, ensuring employee loyalty to the company.

광탄성법을 이용한 인장판의 경사균열 응력확대계수 측정 (Stress Intensity Factor Measurement of Inclined Crack in Tensile Plates by Use of Photoelasticity)

  • 백태현;이춘태;김영철
    • 예술인문사회 융합 멀티미디어 논문지
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    • 제5권2호
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    • pp.215-222
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    • 2015
  • 본 논문에서는 중앙에 경사 균열이 있는 시편을 원형편광기에 설치하여 인장하중을 가한 후 나타나는 등색프린지로부터 디지털 영상처리기법을 사용하여 광탄성 프린지를 2배로 증식하여 세선처리한 후, 이로부터 응력확대계수를 측정하였다. 경사균열 시편으로부터 광탄성 법을 이용하여 응력확대계수를 구한 후 이론식으로 계산한 값과 비교하였다. 실험 결과는 이론값에 근접하였으며 광탄성 법으로 응력확대계수를 정밀하게 측정할 수 있는 가능성을 제시하였다.