• Journal of Korean Dental Science
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• 제14권2호
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• pp.61-68
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• 2021

Purpose: The aim of this study was to investigate the outcomes of endodontic treatment of mandibular second molar with C-shaped canal in elderly patients and related factors affecting the survival of the tooth. Materials and Methods: From 2010 to 2015, the survival rate following endodontic treatment was evaluated in elderly patients over 60 years who visited the Veterans Health Service Medical Center for endodontic treatment. The presence of C-shaped canals was confirmed using clinical records and radiographic features. Patient's age, sex, systemic diseases, tooth location, vitality, signs and symptoms, fractures, caries, apical radiolucency, canal shaping methods, sealer leakage, filling voids, and restoration of prosthesis were included in the analyses as confounding variables. The survival rate of teeth was analyzed using Kaplan-Meire analysis and the relationship between the survival rate and variables was analyzed using Simple and Multiple Cox regression analysis. Result: In total, 107 teeth in elderly patients had C-shaped canal. The survival rate of teeth that received endodontic treatment was 63.70%. None of the factors investigated significantly influenced the survival rate (P>0.05). Conclusion: In elderly patients with C-shaped canal, the survival rate after root canal treatment was not significantly different from that of other mandibular molars.

• 과학교육연구지
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• 제46권1호
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• pp.109-120
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• 2022

분수 나눗셈에서는 실세계 상황에서 식을 찾는 과정과 역으로 식에 맞는 상황을 만드는 과정, 나눗셈식을 해결하는 방법과 표준 알고리즘의 정당화 과정 등이 중요하면서도 이해하기 어려운 학습 내용이다. 본 연구에서는 예비교사들의 분수 나눗셈식에 맞는 문장제 만들기와 문장제 해결에 이용한 방법을 분석하였다. 초등 예비교사들은 피제수가 제수보다 작은 분수 나눗셈에서 그 반대인 경우보다 문장제 만들기에 어려움을 가지고 있었고, 문장제 만들기에서도 전형적인 오류를 나타내었다. 문장제 해결에서는 문제 상황에 따라 이용한 방법에 차이가 나타났다. 본 연구를 통해 예비교사 교육과정에서 분수 나눗셈 지도에 관한 지도 방법의 재고와 학년 간 반응 결과의 차이를 고려할 때 예비교사들의 '교수와 내용에 관한 지식'의 형성 과정에 관한 분석이 이루어질 필요가 있다.

• 한국보육지원학회지
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• 제13권5호
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• pp.93-109
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• 2017

Objective: The purpose of this study is to provide basic data in order to increase the flourish of early childhood pre-service teachers by examining pre-service teacher's basic psychological needs and characteristics on flourish. Methods: A questionnaire survey was conducted on 200 pre-service teachers majoring in early childhood education in Busan and the results were analyzed. Results: First, the level of basic psychological needs, characteristics and flourish of pre-service teachers was above average and there was a significant positive correlation between basic psychological needs, characteristics and flourish. Second, the characteristics of pre-service teachers were relatively more influential on flourish than basic psychological needs. Conclusion/Implications: The main variables predicting early childhood pre-service teacher's flourish are characteristics and basic psychological needs. And as characteristics and basic psychological needs of pre-service teachers are promoted, the flourish of pre-service teachers is increased.

• 품질경영학회지
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• 제28권4호
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• pp.161-183
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• 2000

This empirical research examines the effects of organizational service-orientation on business performance such as employee satisfaction, customer satisfaction and financial performance comprehensively. The service-orientation has been considered very importantly for delivering excellent service quality and customer value in many existing studies. Also service type's arbitrating effects on the relationship between service-orientation factors and business performance are investigated in this research. The data were collected from employees in hospitals and fast-foods with the questionnaire. And the several statistical methods were used for analysing. Consequently we could find that the comprehensive service-orientation factors gave the significant effects on the business performance. And service type's arbitrating effects sere apparent. It was revealed that the customization of service package and the customers' influence on service process must be considered as the important variables which have the significant effects on business performance.

• 산업경영시스템학회지
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• 제31권3호
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• pp.35-42
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• 2008

In the national economy, rate of service industry is going up to compare with manufacture industry. In spite of getting lots of results to be introduced 6 sigma methodology in Korea, many service companies is suffering with trial and errors. Also 6 sigma isn't settled perfect yet. The reason for that, 6 sigma have been applied to various service without considering. Therefore, this research shows to you right practice plans for service industrial classification to check structural features and difference. So this research seeks methods for revitalization of 6 sigma methodology in service industry after checking existed research, case study for companies to be applied by 6 sigma. As the result, service industry is forecasted to contribute greatly in economic growth and employment enlargement through enlargement of service role in manufacturing industry production as well as by itself.

• 품질경영학회지
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• 제41권1호
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• pp.95-108
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• 2013

Purpose: The purpose of this study is to identify the impact of TQM dimensions through service recovery justice on service quality and customer satisfaction. Methods: This study employed structural equation modeling methodology analyzing 265 samples collected. Results: This study found that TQM related factors had positive influence on service recovery justice in general. In specific, top management leadership and employee participation are the most important factors for the service recovery justice. Conclusion: This study reveals that service recovery justice has the positive impact on both service quality and customer satisfaction.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.59-67
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• 2019

The service composition based on Service-Oriented Architecture(SOA) can make us view various machines or its functionalities in the Web or Internet-of-Things environment as 'service', and efficiently create new value-added services that users want by compositing different services if there is no service to satisfy the client. The service composition problem with respect to behavioral descriptions deals with the automatic synthesis of a coordinator service that controls a set of services to reach a goal state. Despite its importance, however, solving the service composition problem with only partial observations remains to be doubly exponential in the number of variables in service descriptions, rendering any attempts to compute an exact solution for modest size impractical. Toward this challenge, in this paper, we propose novel approximation-based approaches using abstraction methods. We empirically validate that our proposals can solve realistic problems efficiently.

• 유통과학연구
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• 제12권7호
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• pp.53-61
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• 2014

Purpose - This study focuses on "large-scale marts," which is a typical discount-based retail channel (hereinafter, DRC), and provides practical managerial implications by applying the KD-SQS service quality factor based on customers' experiential perspective by developing and applying existing service measures. Research design, data, and methodology - The research subjects include adults who have experienced "large-scale marts." The research involved SPSS 20.0 and AMOS 19.0 packages; path analysis is used to analyze structural relationships. Results - First, physical aspects, human interaction, and additional convenience aspects of service quality have statistically significant influence on service value. Second, physical aspects, human interaction, and policy have statistically influence on store loyalty. Third, service value influences store loyalty. Fourth, service guarantee adjusts the relationship between service quality, service value, and store loyalty in terms of human interaction and policy. Conclusion - Among service quality measures, improving service value through personal service needs to be prioritized, while we need to develop different methods for the service guarantee system to effectively influence service value and store loyalty.

• 대한유전성대사질환학회지
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• 제2권1호
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• pp.68-71
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• 2002

• 한국전자거래학회지
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• 제12권2호
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• pp.155-194
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• 2007

본 연구의 목적은 최근 급속히 확산되고 있는 유비쿼터스 컴퓨팅 관련 기술 개발의 기준이 되고 있는 UCT(Ubiquitous Computing Technology)기반 서비스 시나리오의 실질적인 구현 가능성을 종합적으로 평가하는 다면평가방법론을 제안하는 것이다. 다면평가는 제안된 UCT기반 서비스 시나리오에 대하여 기술성, 사업성, 수용성의 3차원으로 평가하여 개별 시나리오의 구현 가능성 및 타당성에 대한 종합적인 평가를 가능하게 해주는 평가방법론이다. 이것은 기존 UCT기반 서비스 시나리오 관련 평가방법론의 부재를 극복하기 위해 제안되었다. 또한 기존에 제안된 기술가치 평가, 재무적 평가(ROI, ROA 등) 등 현재 구현되지 않는 UCT기반 서비스 시나리오의 특성상 도출 불가능 하거나 그 의미를 부여하기 어려운 파라미터를 이용하는 평가 방법의 한계를 극복하기 위해 제안되었다. 따라서 이는 다양한 분야에서 제안되는 UCT기반 서비스 관련 시나리오에 대한 실현 가능성을 포괄적으로 평가하여 해당 시나리오에 기반한 기술 개발에 대한 타당성과 개발 우선순위를 결정하는 평가 도구로 활용 가능할 것이다.