• 한국수소및신에너지학회논문집
• /
• 제27권4호
• /
• pp.447-461
• /
• 2016

Recently, the Renewable Fuel Standard(RFS) has been commenced from July 31, 2015 in the New and Renewable Energy Act for expanding the supply of renewable energy and reduction of national GHG target in Korea. The biodiesel is only a means of implementation for the RFS, therefore the biodiesel supply expansion is important for fulfilling the RFS obligation policy. The major key points of the biodiesl supply are expanding domestic feedstocks due to the over 60% dependence on foreign feedstock and reducing the price of feedstock because of the over 70% occupation of feed stock price in the biodiesl production cost. Therefore, we estimated actual amount of potential feedstocks which are possible to use for biodiesl production in Korea and investigated technical and political improvements for expanding biodiesl. For estimating a potential feedstocks, first selected the potential biodiesl feedstocks by investigating the status of global biodiesl feedstocks and then analyzed the possible potential amount of each feedstock by surveying the generation situations, the distribution structures and the technical level.

• Restorative Dentistry and Endodontics
• /
• 제49권2호
• /
• pp.16.1-16.10
• /
• 2024

Objectives: This cross-sectional study evaluated the prevalence of apical periodontitis (AP) and the technical quality of root canal fillings in an adult Kuwaiti subpopulation using cone-beam computed tomography (CBCT) images. Materials and Methods: Two experienced examiners analyzed 250 CBCT images obtained from Kuwaiti patients aged 15-65 years who attended government dental specialist clinics between January 2019 and September 2020. The assessment followed the radiographic scoring criteria proposed by De Moor for periapical status and the technical quality of root canal filling. Chi-square and Fisher's exact tests were used for statistical analysis, with significance level set at p < 0.05. Results: Among the 2,762 examined teeth, 191 (6.91%) exhibited radiographic signs of AP, and 176 (6.37%) had undergone root canal filling. AP prevalence in root canal-treated teeth was 32.38%, with a significant difference between males and females. Most of the endodontically treated teeth exhibited adequate root canal filling (71.5%). Conclusions: The study demonstrated a comparable prevalence of AP and satisfactory execution of root canal treatment compared to similar studies in different countries.

• 한국CDE학회논문집
• /
• 제17권3호
• /
• pp.164-174
• /
• 2012

The recent introduction of BIM technology has raised the interest on the BIM quality assurance and management more than ever. This study aims to consider the ways of BIM quality improvement by analyzing the most frequent issues rising from multiple BIM projects. For this purpose, the 12 test models from BIM education program hosted by buildingSMART Korea are investigated based on the requirements in the public BIM guidelines. All the BIM issues generated are categorized by the criteria applied and analyzed for each kind of building element. The results showed that more than half of the issued at least could be cleared out by improving modeling habits and technical guides.

• International Journal of Advanced Culture Technology
• /
• 제11권1호
• /
• pp.171-180
• /
• 2023

This study is to develop a performance analysis model for SMEs.Based on similar performance indicators through previous studies, performance indicators for SMEs were rewritten.Through the Korean Journal Citation Index (KCI), 75 related data were classified and a comprehensive SME performance analysis model was developed.Performance analysis was divided into two axes and classified into tables.The horizontal axis is the spatial performance range, which is divided into three areas: performance management by department/function, integrated performance management for the entire organization, and governance performance management requiring policy feedback. The vertical axis is subdivided into short-term, mid-term, and long-term by time and growth stage, and is divided into three parts: technical performance according to technological input, economic performance as organizational performance, and social performance for policy utilization. Then, performance indicators were mapped to each column. As a result of the survey, 28% of technical performance was analyzed as a result of frequency analysis, and performance indicators were organized into five categories: IT, R&D, certification, patent, and innovation. Economic performance was divided into 29%, BSC, HRD, logistics, production quality management, financial support, asset management, etc. 6 categories, social performance 43%, ESG, marketing, export, policy support, consulting, cooperation, etc. 7 categories.Limitations of the study include the narrowness of the survey that derived only performance indicators despite being a meta-analysis, and the performance model was mapped and classified according to growth stage and support period.however Insufficiency of validity due to lack of evidence, performance indicators were developed, but there were limitations in utilization for practical use.

• 방송공학회논문지
• /
• 제15권1호
• /
• pp.89-98
• /
• 2010

본 논문에서는 FM 방송 링크용 M/W 시스템의 주파수 재배치 시 동등 수준의 전송 품질이 유지되기 위한 기술적 분석 방법론을 제안한다. 실제 각 주파수 대역에서 동작하는 M/W 중계 장치에 대한 수치 계산을 하였으며, 그 결과를 페이드 마진으로 표현된 링크 가용율로 평가하였다. 1700 MHz 대역에서 2.6 dB 이상의 상대적 페이드 마진이 확보가 되면 주파수 재배치 후에도 동일한 품질을 얻을 수 있음을 보였다. 제안된 방법은 M/W 장치의 주파수 재배치에 관한 서비스 품질 평가에 크게 활용될 것으로 여겨진다.

• 경영과학
• /
• 제33권2호
• /
• pp.75-87
• /
• 2016

Quality function deployment (QFD) is a widely adopted customer-oriented product development methodology by analyzing customer requirements. It is a main activity in QFD planning process to determine the optimal values of the technical attributes (TAs) so as to achieve the customer requirements (CRs) from the House of Quality (HoQ). In most of the previous research, all the TAs in QFD are assumed to have either continuous or discrete values. In the real world applications, the continuous TAs and the discrete TAs are often mixed in QFD. In this paper, a mixed integer linear programming model is formulated to obtain the optimal values for the continuous TAs and the discrete TAs in QFD planning as well as Branch and Bound (B and B) algorithm is proposed as the solution approach. Finally, the proposed model and solution approach are illustrated with an office chair under multi-segment market, and the sensitivity analysis is performed to study how the proposed model and its solutions respond to the variation for the two elements which are budget and CRs' weights.

• 패션비즈니스
• /
• 제10권1호
• /
• pp.106-119
• /
• 2006

The purpose of this study was to analysis how perceived beauty service quality, perceived value influenced on purchase intention of customers. Moreover, this study was suggested strategic solutions for beauty managers and employees to build efficient marketing strategies in order to maximize customer satisfaction. For research method, SPSS 12.0 program was used and for the accuracy of precision of a measuring instrument reliability test was applied. And then simple and multiple regression analysis were performed to examine the effects of independent variables to dependent variables to dependant variables. The results of this study were five folds: the higher perceived service quality of beauty service was, the higher perceived value, satisfaction, word-of-mouth, and intention of revisiting were; the higher perceived value was, the better satisfaction, word-of-mouth, and intention of revisiting were; technical service quality was single most important factor affecting influence on perceived value, satisfaction, word of mouth, intention of revisiting, and functional service quality and physical service quality were listed second and third.

• 대한공업교육학회지
• /
• 제33권1호
• /
• pp.191-212
• /
• 2008

본 연구의 목적은 공업고등학교 프로젝트 수업을 위한 소집단의 구성 방법을 제시하는 데 있다. 연구 대상은 대전광역시에 소재하고 있는 D 공업고등학교의 건축디자인과 2학년 2개 반을 선정하여 그 중 한 학급에 20명씩 40명을 연구 대상으로 하였다. 연구 방법은 학생들은 교류분석 실습의 과정에서 각자의 이고그램(ego-gram)에 의한 자아상태(ego-state)를 조사하였다. 구성원 4명을 1개조로 구성하여 연구대상 40명을 총 10개의 소집단을 구성 하였고, 그 중 자아상태 동질 소집단은 NP점수와 AC점수가 상위인 학생들로만 구성된 4명을 1개 조로 구성하였다. 자아상태 이질 소집단은 NP주도 1명, A주도 1명, FC주도 1명, AC주도 1명으로 구성된 4명을 1개 조로 구성하였다. 선정된 소집단은 비디오카메라로 녹화한 후 소집단의 언어적 상호작용을 글로 옮긴 원고(transcript)를 작성하였다. 그리고 언어적 상호작용의 분석틀을 이용하여 개별진술을 분석하였다. 연구 결과 자아상태 중 TAOK(Transactional Analysis-Okay) 측면의 동질 집단의 학생들이 개별 진술의 횟수가 110회로 이질 집단의 학생들 87회에 비하여 개별진술의 빈도가 더 많았고 대화의 내용도 질문에 서로 답하는 상보교류가 원활하게 이루어진 것을 확인할 수 있었다.

• 대한방사선기술학회지:방사선기술과학
• /
• 제44권4호
• /
• pp.351-358
• /
• 2021

This research project is a program promoted to seek diversification of domestic radioactive waste analysis institutions, and seeks public development, win-win cooperation, and cooperation between the entrusted institution and the entrusted institution. Accordingly, the entrusted institution established a standard analysis procedure for establishing a quality control system for radioactivity analysis, establishing a radiation control zone, obtaining KOLAS accreditation, and performing proficiency tests, which are the performance ranges requested by the entrusted institution, and intersecting the radioactive isotope waste generated at the actual site. Verification was performed to confirm the analysis quality. In addition, facilities and equipment for radioactivity analysis were supplemented and expanded, and the basic technology foundation and technical skills were secured through securing professional technicians and education/training. It is judged that the entrusted institution will contribute to securing radiation safety through the smooth execution of treatment, disposal, and transportation through value creation and analysis of radioactive waste generated by radioactive isotope-using institutions (research institutes, hospitals, industries, etc.) by succeeding in this research project do.

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 2005년도 춘계학술발표회
• /
• pp.1221-1222
• /
• 2005

Interface control activities during the nuclear power plant (NPP) construction and operation have been reviewed for enhancing the safety of NPP. The primary focus of the study is given on analysis of lessons learned from the recent significant events of Korean Standard Nuclear Power plant (KSNP), such as a series of break-off of thermal sleeves at YGN 5 & 6 and radioactivity leak at YGN 5, in respect of interface control. Based on the results of the analysis, this study recommends measures for the improvement of interface control among utility and technical supporting organizations (TSO), and suggests new regulatory systems, such as reporting of safety significant non-conformances, to effectively verify the adequacy of interface control activities during construction and operation of NPPs.