• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.47-50
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• 2006

현재의 화석연료-기반 사회에서는 지구 온난화와 고유가 추세가 야기하는 경제적 피해, 에너지 안보우려, 세계 평화 위협 등에 자주 노출되고 있는 실정이다. 세계 각국은 이러한 화석연료 에너지원을 대체하는 환경-청정하고 기술-신뢰할 수 있으며 경제-감당할 수 있는 에너지 공급원인 수소를 기반으로 하는 미래의 수소-기반 사회로의 진입에 노력하고 있다. 특히, 청정한 에너지 운반체인 수소의 생산 기술 상업화가 더욱 더 절실히 요구되고 있다. 이 예비 연구에서는 이산화탄소 포획/저장 기술과 결합된 다양한 수소 생산 기술의 정량적인 예비 비교 평가가 수행되었다. 예비적인 비교 평가 기준으로 1) 이산화탄소 배출량: 2) 에너지 이용률; 3) 토지 점유율: 4) 수소 생산비용 등이 고려되었다. 이러한 기준에 따라 수소 생산 기술 가운데 네 가지 예비 기술 대안인 1) 원자력: 2) LNG; 3) 석탄: 4) 태양광 등이 비교되었다. 대안 기술의 비교 평가 체제로 계층 망형 구조-기반 되먹임 모델이 개발되었다. 이러한 수소생산 기술의 우선순위 선정 결과는 개별 대안 기술의 상대적인 장단점 및 기술적인 갭을 정량적으로 인식하는 데에 활용될 수 있다. 그러므로 이 예비 연구는 수소 생산 기술 연구자나 수소 경제 기획자한테 뿐만 아니라 이산화탄소 포획/저장 기술 개발자한테 도움이 되리라 본다.

• Nuclear Engineering and Technology
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• 제37권1호
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• pp.79-90
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• 2005

In this paper are reviewed the current status of nuclear fuel management and reactor operational aid tools. In addition, we indicate deficiencies in current capabilities and what future research is judged warranted. For the nuclear fuel management review the focus is on light water reactors and the utilization of stochastic optimization methods applied to the lattice, fuel bundle, core loading pattern, and for BWRs the control rod pattern/core flow design decision making problems. Significant progress in addressing separately each of these design problems on a single cycle basis is noted; however, the outstanding challenge of addressing the integrated design problem over multiple cycles under conditions of uncertainty remains to be addressed. For the reactor operational aid tools review the focus is on core simulators, used to both process core instrumentation signals and as an operator aid to predict future core behaviors under various operational strategies. After briefly reviewing the current status of capabilities, a more in depth review of adaptive core simulation capabilities, where core simulator input data are adjusted within their known uncertainties to improved agreement between prediction and measurement, is presented. This is done in support of the belief that further development of adaptive core simulation capabilities is required to further significantly advance the utility of core simulators in support of reactor operational aid tools.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.1315-1325
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• 2021

This study aimed to design a strategy in encouraging the loyalty level of priority customers of Sharia banks in Indonesia. The strategy was outlined in a series of alternative applicative programs priority. The use of ANP intended to simplify the existing problems so that the offered solution was easier to apply. Each item was scored on a 5-point Likert scale. The expected outcome was to give priority scales to the offered solutions. The findings of this study are service quality, brand image, bank image which could build customer loyalty in Sharia banks. Priority customer gathering could strengthen the bonds between customers and also between customers and their banks. The excellence of Sharia banks in terms of service quality, brand image, and bank image, when combined with priority customer gathering activities, would become a powerful formula in increasing priority customer loyalty to banks that lead to increased revenue from banks. Originality of this research was the formulation process of a new approach in search of ways to increase the customer loyalty, as well as giving concrete proposals for the banking world in designing customer loyalty improvement programs. This paper shows the updated strategy in Customer Loyalty, Bank image, Brand image, Banking service quality.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권10호
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• pp.3299-3312
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• 2022

Recently, South Korea preferentially allocated frequencies to build 5G networks as a core competitiveness of the 4th Industrial Revolution. Although the government recognize the importance of 5G construction and preoccupation, network operators have limited to some services, testing the possibility of practical use of 5G. They hesitated to actively build and to carry out the service of a complete 5G network. While 5G is being developed and standardized like this, no one is sure of this step exactly what 5G will be. Thus, following research questions are asked by various stakeholders of 5G market: What is an ideal service providing method for the practical use of 5th generation mobile network? And what are the critical elements to be considered when selecting the service providing method? Therefore, the study aims to investigate 5G service providing issues and elements to be considered and to provide most appropriate service providing method for the practical use of 5G. The results identify that 'Specialized Service' is most appropriate method at the aspects of benefit and opportunity as well as the aspect of risk. In addition, the outcomes imply that the experts replying to the survey not only expect the expansion of emerging market, but also concern the social risk and cost. Since the study dealt with economic, social and business issues in providing 5G service, it might contribute not only to practical research, but also to academic research regarding 5G service method.

• Journal of East Asia Management
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• 제2권1호
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• pp.63-92
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• 2021

Human activities have been putting a great burden on the earth, leading to many serious problems, such as lack of resources, ecological degradation and air degradation. Although many countries have recognised this circumstance and have developed some sustainable development strategies, the earth still needs research on sustainability in different views and various industries. The nursing industry has grown with the ageing of the global population in recent years, and professional nursing institutions could relieve structural deterioration caused by the ageing population in family, social, economic and cultural. Hence, exploring the key criteria of organisational sustainability in the nursing industry is of the utmost priority. This paper puts forward an evaluation framework to identify the key criteria of organisational sustainability. After connections with nursing homes A and B in China, the author adopts literature research to confirm the criteria system which is based on triple bottom line, utilises analytical network process method to design the network hierarchy analysis model and importance comparison questionnaires to collect experts' first-hand data, and uses technical software - Super Decisions to integrate data and obtain final results. The results recommend three top-ranked criteria in the entire system, eco-recruitment, eco-procurement and corporate social responsibility are discussed with some professional suggestions in the end. The limitations are also extended in the last chapter to provide future research perspectives.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권11호
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• pp.3030-3049
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• 2023

With the development and wide application of hybrid network computing modes like cloud computing, edge computing and fog computing, the customer service requests and the collaborative optimization of various computing resources face huge challenges. Considering the characteristics of network environment resources, the optimized deployment of service resources is a feasible solution. So, in this paper, the optimal goals for deploying service resources are customer experience and service cost. The focus is on the system impact of deploying services on load, fault tolerance, service cost, and quality of service (QoS). Therefore, the alternate node filtering algorithm (ANF) and the adjustment factor of cost matrix are proposed in this paper to enhance the system service performance without changing the minimum total service cost, and corresponding theoretical proof has been provided. In addition, for improving the fault tolerance of system, the alternate node preference factor and algorithm (ANP) are presented, which can effectively reduce the probability of data copy loss, based on which an improved cost-efficient replica deployment strategy named ICERD is given. Finally, by simulating the random occurrence of cloud node failures in the experiments and comparing the ICERD strategy with representative strategies, it has been validated that the ICERD strategy proposed in this paper not only effectively reduces customer access latency, meets customers' QoS requests, and improves system service quality, but also maintains the load balancing of the entire system, reduces service cost, enhances system fault tolerance, which further confirm the effectiveness and reliability of the ICERD strategy.

• Journal of Microbiology
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• 제45권6호
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• pp.510-514
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• 2007

Twenty-five bacterial strains that secrete mucous materials were isolated from sediment obtained from King George Island, Antarctica. Seven of these strains proved capable of producing cryoprotective exopolysaccharides. The strain KOPRI 21653 was selected for the further study of an anti-ice-nucleating polysaccharide (ANP), which originated from a polar region. KOPRI 21653 was identified as Pseudoalteromonas arctica as the result of 16S rRNA analysis. The exopolysaccharide, P-21653, was purified completely from the KOPRI 21653 cell culture via column chromatography and protease treatment. The principal sugar components of P-21653 were determined to be galactose and glucose, at a ratio of 1:1.5, via GC-MS analysis. The cryoprotective activity of P-21653 was characterized via an E. coli viability test. In the presence of 0.1% (w/v) P-21653, the survival ratio of E. coli cells was as high as 82.6% over three repeated freeze-thaw cycles. The survival ratio decreased drastically to 71.5 and 48.1 %, respectively, in five and seven repeated cycle conditions; however, the survival ratios were greater over three (96.6-92.1%) to seven (100.5-91.6%) freeze-thaw cycles in the presence of 0.5 and 1.0% (w/v) P-21653. In addition, at much lower concentrations (0.1-1.0%), P-21653 resulted in survival ratios (83.1-98.4%) similar to those of two commercially available cryoprotectants ($V_{EG}$ plus X-1000, 92.9% and $V_{M3}$, 95.3%), which were utilized at the recommended concentrations (90%). The biochemical characteristics of exopolysaccharide P-21653 reflect that this compound may be developed as a useful cryoprotectant for use in medical applications and in the food industry.

• 디지털융복합연구
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• 제10권1호
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• pp.335-339
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• 2012

소프트웨어 형상관리는 소프트웨어 제품에 기반이 되는 대규모 소프트웨어 산출물 집합을 관리하는 분야이다. 형상관리는 과거 수년 동안 빠르게 발달해왔지만, 새로운 형상관리 시스템은 여전히 요구되고 있다. 전통적인 방법을 쓰거나 형상관리에 대한 연구보다는 현재 개발 프로젝트의 필요한 전문적인 관리가 필요하다. 따라서 형상관리에 필요한 저장소의 일반적인 모델이나 형상관리에 변형에 따른 과정을 관리하고 프로그램에 연결되어 있는 프로그램의 인터페이스를 분리하여 관리하는 기법이 필요하다. 본 논문은 형상관리에 필요한 저장소를 제공하고 프로그램과 인터페이스를 분리하여 관리하는데 필요한 의사결정 시스템을 도입하였다. 따라서 필요한 형상관리의 의존도를 가지고 새로운 접근법을 시도하였다. 의존도가 높은 개별적 컴포넌트의 변형과 결합을 위해 의사결정 시스템을 이용하여 확인 및 검증을 하여 소프트웨어 개발에 필요한 형상관리를 제공하고 있다.

• 한국의류학회지
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• 제12권3호
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• pp.333-342
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• 1988

The purpose of this study was to investigate the relationship between Perception of self anp Clothing Interest, and to determine the difference of Clothing interest and Perception of self by the demographic variables. Perception of self was measured with Perception of self test from Choi's Perceptual Orientation Scale. Appearance, Clothing comfort, Fashion, Psychological dependence, Clothing economics were measured with items from Gurel's Study and Creekmore's for method of measuring clothing variables, items were drawn from preceding measures and, slightly modified. Data were affected from 305 purposively selectee! elderly women over sixty dwelling in Seoul by means of interview and questionnaire. For statistical analyses, frequency distribution, ANOVA, Duncan's multiple Range test, Pearson's Correlation coefficients were used. The results were as follows; 1. The three groups classified, by Perception of self were Positively Correlated to Appearance, Fashion and Psychological dependence. 2. There was partially significant difference between clothing interest and demographic variables. Education and socioeconomic status affected Psychological dependence. Demographic variables not affected Clothing comfort. 3. There was partially significant difference between Perception of self and demographic variables. Age, education, marital status and socioeconomic status affected Perception of Self. 4. There was partially significant relationships among subscales of the Clothing interest. Appearance was positively correlated to clothing comfort, Fashion and Psychological dependence, clothing comfort was positively correlated to Appearance, Psychological dependence. Fashion was positively correlated to Appearance, Clothing comfort and, Psychological dependence.

• 한국콘텐츠학회논문지
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• 제13권8호
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• pp.371-385
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• 2013

대학 도서관의 지식문헌정보서비스는 대학 교육 및 교수의 연구를 지원하는 중요한 역할을 수행하고 있다. 이에 따라, 서비스 품질요소를 계층적 관점에서 정의하고 이들의 중요성을 분석함으로써 대학 도서관의 서비스를 개선하기 위한 연구들이 선행되어 왔다. 그러나 기존 연구들은 서비스 품질을 구성하는 하위요소들 간의 상호 영향관계, 그리고 서비스 이용자와 제공자 두 집단간의 서비스 품질요인에 대한 인식차를 파악하여 서비스를 개선하는 측면에서는 연구가 미흡한 실정이다. 따라서 본 연구는 SERVQUAL의 관점을 바탕으로 도서관 서비스를 구성하는 서비스 품질요소 간 상관관계를 네트워크 모델로 도출하고, Analytic Network Process를 활용하여 서비스 이용자와 제공자 집단간의 서비스 품질요소에 대한 인식차이를 도출, 분석하였다. 그 결과 제공자는 요소들을 비교적 균일하게 중요하게 인식하지만 이용자는 특정 몇 가지 요소들을 중요하게 인식하는 것을 확인하였다. 도서관 서비스 품질요소들간의 상관관계와 집단간의 인식차이를 파악하는 본 연구의 접근방법은 추후 대학 도서관의 지식문헌서비스 경쟁력 확보에 기여할 것으로 기대된다.