• 제목/요약/키워드: SEM Image

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PDP ITO 결함 검출기술에 관한 연구 (A Study on Inspection Technology of PDP ITO Defect)

  • 송준엽;박화영;정연욱;김현종
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.191-195
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    • 2003
  • The formation degree of sustain (ITO pattern) decides quality of PDP (plasma display panel). For this reason. it makes efforts in search defects more than 30 ${\mu}{\textrm}{m}$. Now, the existing inspection process is dependent upon naked eye or SEM equipment in off-line PDP manufacturing process. In this study developed prototype inspection system of PDP ITO glass. This system creates information that detects and sorts kind of defect automatically. Design ed inspection technology adopts line-scan method by slip-beam formation for the minimum of inspection time and image processing algorithm is embodied in detection ability of developed system. Designed algorithm had to make good use of kernel matrix which draws up an approach to geometry. A characteristic of area-shaped defects, as pin hole, substance, protrusion et al, are extracted from blob analysis method. Defects, as open, short, spots, et al, are distinguished by line type inspection algorithm. In experiment results, we could have ensured ability of inspection that can be detected with reliability of up to 95% in about 60 seconds

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Monte Carlo Simulation Study: the effects of double-patterning versus single-patterning on the line-edge-roughness (LER) in FDSOI Tri-gate MOSFETs

  • Park, In Jun;Shin, Changhwan
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제13권5호
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    • pp.511-515
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    • 2013
  • A Monte Carlo (MC) simulation study has been done in order to investigate the effects of line-edge-roughness (LER) induced by either 1P1E (single-patterning and single-etching) or 2P2E (double-patterning and double-etching) on fully-depleted silicon-on-insulator (FDSOI) tri-gate metal-oxide-semiconductor field-effect transistors (MOSFETs). Three parameters for characterizing the LER profile [i.e., root-mean square deviation (${\sigma}$), correlation length (${\zeta}$), and fractal dimension (D)] are extracted from the image-processed scanning electron microscopy (SEM) image for each photolithography method. It is experimentally verified that two parameters (i.e., ${\sigma}$ and D) are almost the same in each case, but the correlation length in the 2P2E case is longer than that in the 1P1E case. The 2P2E-LER-induced $V_TH$ variation in FDSOI tri-gate MOSFETs is smaller than the 1P1E-LER-induced $V_TH$ variation. The total random variation in $V_TH$, however, is very dependent on the other major random variation sources, such as random dopant fluctuation (RDF) and work-function variation (WFV).

전문병원의 서비스특성이 서비스관계품질을 매개로 서비스성과에 미치는 영향 (The Effects of Service's Characteristics on Service Performance by Mediating Service Relationship Quality in Specialty Hospitals)

  • 조형래;최철재
    • 한국병원경영학회지
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    • 제22권3호
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    • pp.88-104
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    • 2017
  • The purpose of this study explains how service characteristics such as service competence, service customization, interpersonal communication and image affect service trust and affective commitments and how service trust, affective commitment play a role in affecting risk-taking and service loyalty in specialty hospital. and then confirm the mediating role of relationship quality components such as service trust and affective commitment in the above path relation. For this purpose, the research hypothesis was verified by structural equation model analysis(SEM) using SPSS 21.0 and AMOS 20.0 statistical package. The results of the study are as follows. First, interpersonal communication influenced service trust, image influenced affective commitment, service ability influenced service trust and emotional commitment, while service customization did not affect any factor. Second, service trust and affective commitment did not effect each other. Third, service trust and affective commitment were more powerful in risk-taking than the influence on service loyalty. Fourth, Risk takings affected service loyalty. Therefore, marketers of special hospitals not only medical services by providing medical service with superior service ability, but also by always strengthening interpersonal communication at the time of providing services. This will enable consumers to overcome the avoidance in the service decision process and implement a specific service marketing strategy that can continuously use the hospital service.

Evaluation of soil spatial variability by micro-structure simulation

  • Fei, Suozhu;Tan, Xiaohui;Wang, Xue;Du, Linfeng;Sun, Zhihao
    • Geomechanics and Engineering
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    • 제17권6호
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    • pp.565-572
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    • 2019
  • Spatial variability is an inherent characteristic of soil, and auto-correlation length (ACL) is a very important parameter in the reliability or probabilistic analyses of geotechnical engineering that consider the spatial variability of soils. Current methods for estimating the ACL need a large amount of laboratory or in-situ experiments, which is a great obstacle to the application of random field theory to geotechnical reliability analysis and design. To estimate the ACL reasonably and efficiently, we propose a micro-structure based numerical simulation method. The quartet structure generation set algorithm is used to generate stochastic numerical micro-structure of soils, and scanning electron microscope test of soil samples combined with digital image processing technique is adopted to obtain parameters needed in the QSGS algorithm. Then, 2-point correlation function is adopted to calculate the ACL based on the generated numerical micro-structure of soils. Results of a case study shows that the ACL can be estimated efficiently using the proposed method. Sensitivity analysis demonstrates that the ACL will become stable with the increase of mesh density and model size. A model size of $300{\times}300$ with a grid size of $1{\times}1$ is suitable for the calculation of the ACL of clayey soils.

Determinants of Business Education on Student Satisfaction in Higher Education: A Case Study in Cambodia

  • LONG, Sovang;DUANG-EK-ANONG, Somsit;VONGURAI, Rawin
    • The Journal of Asian Finance, Economics and Business
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    • 제8권3호
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    • pp.1405-1416
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    • 2021
  • The study uses an innovative management perspective to investigate the environment of higher education institutions to ensure the survival of universities in Cambodia. This has led Cambodian universities to expand their educational offerings to students in Years 2, 3 and 4. The data was collected through a Google Forms survey to facilitate and accelerate data collection. The sample of 500 students come from three higher education institution by employing multi-stage sampling technique of probability and non-probability sampling methods to ensure representation of the research population. The data were analyzed by using Confirmatory Factor Analysis (CFA) and Structural Equation Model (SEM) to investigate the impact of these determinants on students' satisfaction and loyalty, via answering 54 questions. The results showed that the three Cambodian universities perform well in terms of satisfactory conditions such as transformative quality and university image. There are four issues to which universities need to pay attention, namely, teaching methods, infrastructure facilities, learning material, and academic environment that are yet to meet the needs of students. This study contributes to the principle of innovative management in the context of Cambodian academic environment. The results help to fathom the depth of enhancing quality and institutional survival.

Non-destructive evaluation of steel and GFRP reinforced beams using AE and DIC techniques

  • Sharma, Gaurav;Sharma, Shruti;Sharma, Sandeep K.
    • Structural Engineering and Mechanics
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    • 제77권5호
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    • pp.637-650
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    • 2021
  • The paper presents an investigation of the widely varying mechanical performance and behaviour of steel and Glass Fibre Reinforced Polymer (GFRP) reinforced concrete beams using non-destructive techniques of Acoustic Emission (AE) and Digital Image Correlation (DIC) under four-point bending. Laboratory experiments are performed on both differently reinforced concrete beams with 0.33%, 0.52% and 1.11% of tension reinforcement against balanced section. The results show that the ultimate load-carrying capacity increases with an increase in tensile reinforcement in both cases. In addition to that, AE waveform parameters of amplitude and number of AE hits successfully correlates and picks up the divergent mechanism of cracking initiation and progression of failure in steel reinforced and GFRP reinforced concrete beams. AE activity is about 20-30% more in GFRP-RC beams as compared to steel-RC beams. It was primarily due to the lower modulus of elasticity of GFRP bars leading to much larger ductility and deflections as compared to steel-RC beams. Furthermore, AE XY event plots and longitudinal strain profiles using DIC gives an online and real-time visual display of progressive AE activity and strains respectively to efficaciously depict the crack evolution and their advancement in steel-RC and GFRP-RC beams which show a close matching with the micro-and macro-cracks visually observed in the actual beams at various stages of loading.

Development of Customer Satisfaction Index (CSI) Model for Pakistan

  • HAMAYUN, Khadija;HAFEEZ, Shakir
    • The Journal of Asian Finance, Economics and Business
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    • 제9권7호
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    • pp.153-171
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    • 2022
  • To measure economic performance, customer satisfaction indices are constructed. This study proposes an index for banking and telecom, a significant evaluative system for comparing and enhancing customer satisfaction across the industries. The study suggests and examines amendments and improvements to the prior indices and incorporates ignored indicators to propose a punier index for Pakistan. The study is a pioneer in integrating online and offline indices into a single comprehensive model. The study is enriched by the Theory of Reasoned Action and Technological Acceptance Model. A sample of 320 respondents was used. The sample was divided based on gender and marital status. To authenticate the theoretical model, PLS-SEM was applied. We discovered nine latent variables that define customer satisfaction and conclude that a single model can be utilized for e-commerce enterprises as well. The index scores are comparable to the American index for banking and the Turkish index for telecom. Multi-group analysis (MGA) was used to comprehend the differences among the groups. This reveals that customization, design, reliability, and responsiveness induce satisfaction in telecom male and married customers. For the banking industry, the difference exists in complaint handling, customization, corporate image, perceived price, reliability, responsiveness, sentiments, convenience, and security to satisfaction links, image and complaint handling to loyalty links.

The Impact of Consumer Ethnocentrism on Purchase Intention: An Empirical Study from Vietnam

  • NGUYEN, Thanh Ngoc Dan;DANG, Phuong Nhu;TRAN, Phu Hoang;NGUYEN, Trang Thi Thuy
    • The Journal of Asian Finance, Economics and Business
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    • 제9권2호
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    • pp.427-436
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    • 2022
  • Ethnocentrism in users plays an important role in predicting user behavior when deciding between imported and domestic goods. The purpose of this study is to look into the influence of ethnocentrism in customer behavior on brand image, perceived value, perceived quality, brand trust, and brand buy intention. Vietnamese customers prefer homegrown brands. The moderate role of consumer ethnocentrism in the conceptual framework emphasizes the country origin of the product is the most important factor. It also demonstrates how the intention of Vietnamese consumers to buy domestic brands is substantially influenced. To test the hypothesis, this article used a quantitative technique utilizing PLS-SEM software. With 917 samples, the study used the quota sampling approach to collect data from students at 10 universities in Ho Chi Minh City. The data suggest that all players have a positive association and that consumer ethnocentrism has a moderate impact in the Vietnamese brand context. Following that, suggestions are made to help Vietnamese firms create and retain their brands in the face of severe competition from global brands in the domestic market. To increase consumer intent in purchasing behavior, the Vietnamese local company needs to establish a strong brand.

A Study on the Factors Affecting Perceived Value of PB, Retailer Credibility and PB Purchase Intention

  • Min-Jung, KANG
    • 유통과학연구
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    • 제21권2호
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    • pp.103-110
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    • 2023
  • Purpose: The high-end and variety of recently released items are driving the growth of the distribution industry, which is the purpose of private brand (PB) products. Because PB shortens the distribution process and lowers marketing expenses, such as those associated with various commercials, more people will buy PB while paying lower retail prices. The goal of this study is to make the case that PB can be positioned successfully by determining the influence and direction of each individual constituent concept on how product and store attributes (perceived price, image of retail store) affect the perceived value of PB and the legitimacy of retailers. Research design, data and methodology: The gathered data were examined using PLS-SEM using Smart PLS 3.0 in order to analyze the research model of this study. Internal consistency was verified to demonstrate the measurement model's dependability, and extensive validity analysis, discriminant validity, and analysis were performed to verify the validity. Conclusion: This researcher attempted to gather diverse understandings and viewpoints on PB trends in addition to understanding the existing state of PB products. It is meant to be a unique and successful plan in the PB Brands' marketing strategy. By understanding the brand's value proposition aspects, it is hoped to determine how PB influences brand attitudes based on the findings of this study.

이미지메이킹 교육이 자아존중감과 교육만족도에 미치는 영향 (Effect of Image Making Education on Self-Esteem and Education Satisfaction)

  • 조주은;고선희
    • 한국콘텐츠학회논문지
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    • 제14권11호
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    • pp.1030-1040
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    • 2014
  • 본 연구에서는 항공서비스학과 학생을 대상으로 이미지메이킹 교육이 자아존중감과 교육만족도에 미치는 영향을 파악해보고자 하였다. 이론적 고찰을 토대로 두 개의 가설을 설정하였으며, 선행연구를 기초로 설문을 구성하였다. 편의표본추출을 통해 240부의 설문지를 항공서비스학과 학생을 대상으로 회수하였으며, 결측치가 있는 자료를 제외하고 218부를 사용하였다. 탐색적 요인분석을 통해 이미지메이킹 교육은 외적이미지교육, 기본인성교육 및 매너교육으로 구분하였으며, 자아존중감은 가치감과 존중감으로 구분하였다. AMOS를 활용하여 구조방정식 모형을 이용하여 분석하였으며 결과는 아래와 같다. 먼저 이미지메이킹교육 중 외적이미지교육, 매너교육은 가치감에 유의한 정(+)의 영향을 미치고, 매너교육은 존중감에 유의한 정(+)의 영향을 미치지 않는 것으로 나타났다. 즉 얼굴표정, 메이크업, 컬러 이미지, 헤어연출, 워킹 등의 교육을 통해 가치감이 높아짐을 알 수 있고, 전화매너, 프레젠테이션스킬, 커뮤니케이션 스킬 교육등을 통해 존중감이 높아짐을 알 수 있다. 둘째, 가치감과 존중감은 교육만족도에 유의한 정(+)의 영향을 미치는 것으로 나타나 가설 2는 모두 채택되었다. 즉 자아존중감 중 가치감과 존중감을 높게 지각할수록 교육에 대한 만족도가 높아짐을 알 수 있다. 따라서 지속적이고 체계적인 교육훈련을 통하여 항공서비스학과 학생의 이미지메이킹의 관리가 필요하며, 자아존중감을 높일 수 있는 방안이 모색되어야 한다. 한계점과 향후 논의방향을 제시하였다.