• 제목/요약/키워드: core concept

검색결과 976건 처리시간 0.027초

CORE DESIGN FOR HETEROGENEOUS THORIUM FUEL ASSEMBLIES FOR PWR(1)-NUCLEAR DESIGN AND FUEL CYCLE ECONOMY

  • BAE KANG-MOK;KIM MYUNG-HYUN
    • Nuclear Engineering and Technology
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    • 제37권1호
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    • pp.91-100
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    • 2005
  • Kyung-hee Thorium Fuel (KTF), a heterogeneous thorium-based seed and blanket design concept for pressurized light water reactors, is being studied as an alternative to enhance proliferation resistance and fuel cycle economics of PWRs. The proliferation resistance characteristics of the KTF assembly design were evaluated through parametric studies using neutronic performance indices such as Bare Critical Mass (BCM), Spontaneous Neutron Source rate (SNS), Thermal Generation rate (TG), and Radio-Toxicity. Also, Fissile Economic Index (FEI), a new index for gauging fuel cycle economy, was suggested and applied to optimize the KTF design. A core loaded with optimized KTF assemblies with a seed-to-blanket ratio of 1: 1 was tested at the Korea Next Generation Reactor (KNGR), ARP-1400. Core design characteristics for cycle length, power distribution, and power peaking were evaluated by HELIOS and MASTER code systems for nine reload cycles. The core calculation results show that the KTF assembly design has nearly the same neutronic performance as those of a conventional $UO_2$ fuel assembly. However, the power peaking factor is relatively higher than that of conventional PWRs as the maximum Fq is 2.69 at the M$9^{th}$ equilibrium cycle while the design limit is 2.58. In order to assess the economic potential of a heterogeneous thorium fuel core, the front-end fuel cycle costs as well as the spent fuel disposal costs were compared with those of a reference PWR fueled with $UO_2$. In the case of comprising back-end fuel cycle cost, the fuel cycle cost of APR-1400 with a KTF assembly is 4.99 mills/KWe-yr, which is lower than that (5.23 mills/KWe-yr) of a conventional PWR. Proliferation resistance potential, BCM, SNS, and TG of a heterogeneous thorium-fueled core are much higher than those of the $UO_2$ core. The once-through fuel cycle application of heterogeneous thorium fuel assemblies demonstrated good competitiveness relative to $UO_2$ in terms of economics.

Health Care Communications with Diverse Ethnic Groups

  • Savitri, Singh-Carlson
    • 여성건강간호학회지
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    • 제16권4호
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    • pp.419-423
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    • 2010
  • Purpose: The concept of respect is rooted in the core value of human relations, and interpersonal relationships with others. The notion of respect in these relationships is entrenched in the broader context of the processes of relationships between professionals and clients in general, along with the philosophical and ethical foundations of respect. Although nursing principles and values, such as autonomy and dignity have built their foundation of care on the concept of respect, these concepts (ie. autonomy and dignity) are still different from respect. Respect within health professional-client relationships, indicates that respect is a fundamental concept within nursing, permeating a number of other concepts that provide purposeful nursing care within the process of nurse-client relationships and respect has been discussed as an ethical and moral concept of care that addresses the values of human dignity in the nursing discipline, however research examining the client s perspectives of respect as an ethical principle of care, especially within Canada s diverse population is non-existent. There is limited research from the client s perspective addressing challenges communicating the concept of respect in relationships between health professionals and clients, specifically research directed at immigrant or the vulnerable population.

Brand Concept Elaboration Strategy for an Extended Brand: a Case Study for KB Kookmin Card

  • Chun, Seungwoo;Yoo, Changjo;Lee, Sukekyu;Lee, Seon Min
    • Asia Marketing Journal
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    • 제14권3호
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    • pp.153-167
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    • 2012
  • KB Kookmin Card has separated as an independent corporation from KB Kookmin Bank Credit Card Business Group on March, 2011. Ever since, KB Kookmin Card worked to build its own brand identity. The strategic preparation and conscientious implementations made KB Kookmin Card position in consumer's mind with a strong and unique brand image. Its new brand image was rooted in the inherited strengths of reliable and sincere image. However, it faced the challenge to compete in credit card industry in which most competitors had an advanced and sophisticated image. The strengths of KB Kookmin Card were also at the same time their limitations. KB Kookmin Card took a strategy that strengthened the strengths and improved the weaknesses. It focused on the core competence of being a people's sincere life supporter that helps people make savings from everyday events to make a good sum rather than being a lump sum benefit. The brand introduction strategy was implemented in 2011. The implementation focused on the activities that made internal as well as external customers be aware of the brand. Communication programs using a variety of media were executed to attain this goal. In 2012, second phase communication programs were introduced to elaborate the newly established brand image. It introduced many extended products as well as accessory programs which targeted the segments. Also, various CSR activities in many social domains helped consumers and the public to consider KB Kookmin Card an authentic, caring, trustworthy, and consistently-developing supporter in their everyday lives.

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선물증여의 개념에 관한 이론적 고찰 (A Conceptual Framework for the Gift Giving in Consumer Behavior Research)

  • 이상협
    • 대한가정학회지
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    • 제30권3호
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    • pp.257-270
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    • 1992
  • Gift giving is usually conducted at festive days, Christmas or Parent's day. When consumers purchase gifts, they have some troubles about efficiency and economy of gifts. The issues about gifts purchase also involve the conceptualizing and establishing evaluative measure of gifts. In order to solve some problems concerning to gift giving, it is necessary to define the concept of gift giving above all. Therefore, the purpose of this article is to establish the concept of gift giving in heop of the study of anthropology and sociology about the beginning of gifts. And it attempts to review on gift giving in the field of consumer behavior. So, first this article proposes that the core concept of gift giving is a reciprocity. It means the obligatory system performed among small groups or individuals. Second, in order to analize the gift giving process, it needs to involve important variables-gift occasion and motivation of gift giving, and intimacy relationship.

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Provision of VHE Services to Roaming Users

  • Roussaki, Ioanna;Chantzara, Maria;Xynogalas, Stavros;Anagnostou, Miltiades
    • Journal of Communications and Networks
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    • 제4권4호
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    • pp.363-369
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    • 2002
  • Towards the deployment of 3rd generation systems, Virtual Home Environment (VHE), stemming from 3GPP, appears to be a powerful concept advocating the provision and delivery of personalized services to roaming users across network and terminal boundaries. This paper aims to expose the pathway for materializing the VHE concept, via the specification, implementation and evaluation of a prototype. Core aspects for realizing the concept such as the business and roaming models are presented, while a VHE enabling architecture utilizing key technologies (OSA/Parlay, MExE, and USAT) is introduced. The proposed architecture has already been evaluated by performing an initial trial demonstration. Currently it is being extended to support VHE service provision to roaming users, an aspect to be addressed by the final trial.

인터넷 기반의 원격 협동 선박설계 시스템 (Collaborative Ship Design System Based on Internet Environments)

  • 이경호;이순섭;이종갑
    • 한국CDE학회논문집
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    • 제6권3호
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    • pp.198-205
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    • 2001
  • Under the concept of global economy, the enterprises are assigning design and production environments around the world in different areas. In shipbuilding companies, a serious problem of information exchange emerges as companies use traditional hardware and very distinct softwares appropriate to their field of expertise. To overcome the decreased productivity due to the interruption of information, the concept of simultaneous engineering and concurrent design becomes very significant. In this article, the concept of collaborative design based on internet environments is described. Especially, the core technologies to achieve collaborative design environments among shipbuilding companies, ship owners, ship classification societies, model basin, and consulting companies are adopted.

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Spirituality: Concept Analysis Based on Hybrid Model

  • Oh Pok Ja;Kang Kyung Ah
    • 대한간호학회지
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    • 제35권4호
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    • pp.709-720
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    • 2005
  • Purpose. The purpose of this study was to obtain a clearer understanding of spirituality and examine the process of spirituality through defining the meaning and attributes of spirituality. Method. Concept analysis was done in the three phases, theoretical phase, fieldwork phase, and analytical phase suggested in the Hybrid Model. Five people participated in the fieldwork phase. Results. Spirituality is activated through self-awareness which occurs as spirit being activated through self-introspection, and through restoration of the relationship with Supreme Being. This interconnectedness with Supreme Being has an absolute impact on one's harmonious interconnectedness with self and neighbors, thus leads all the critical attributes of spirituality to be revealed. The core energy of this harmonious inter-connectedness is love. When activated, it has a great impact on an individual as integrative energy, leads one to go beyond everyday experience as well as to have new perspectives, and to live a satisfactory life in every aspect. Conclusion. The results of this study suggest that promotion of connectedness is the most important element in spiritual nursing interventions. The results can also be used effectively in developing spirituality assessment scales and theory.

동시공학적 선박설계를 위한 웹 기반의 협업설계 시스템 (Web based Collaborative Design System for Concurrent Ship Design)

  • 이경호
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2003년도 춘계학술대회 논문집
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    • pp.10-16
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    • 2003
  • Under the concept of global economy, the enterprises are assigning design and production environments around the world in different areas. In shipbuilding companies, a serious problem of information exchange emerges as companies use traditional hardware and very distinct softwares appropriate to their field of expertise. To overcome the decreased productivity due to the interruption of information, the concept of simultaneous engineering and concurrent design becomes very significant. In this article, the concept oj collaborative design based on internet environments is described. Especially, the core technologies to achieve collaborative design environments among shipbuilding companies, ship owners, ship classification societies, model basin, and consulting companies are adopted.

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간호사의 경력 닻 개념분석 (Conceptual Analysis of Career Anchors of Nurses)

  • 오재우;김미란
    • 대한간호학회지
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    • 제53권1호
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    • pp.28-38
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    • 2023
  • Purpose: This study aimed to provide a theoretical basis for career anchors of nurses by defining and organizing its concept. Methods: Using the Walker and Avant concept analysis, a total of 29 articles were analyzed through a literature search in this study. Results: The career anchors of nurses are individual career choice motives, a self-concept where in competency and values are harmonized, which act as a desire for growth and development in nursing, and are actions that maintain careers. Additionally, they indicate the direction for achieving individual career goals and act as a core value expected of nurses by nursing organizations, indicating continuous and integrated professional growth and development of the nursing profession. Conclusion: The career anchors of nurses identified in the results contribute to securing patient safety, providing quality care through policies, institutionalizing bases for career development, preventing nurse turnover, and retaining skilled nurses.

기억에 기반한 조경설계의 개념 형상화 유형 (Types of Concept Figuration in Landscape Design based on Memory)

  • 안승홍
    • 한국조경학회지
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    • 제45권6호
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    • pp.171-184
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    • 2017
  • 설계가는 차원 높은 설계철학과 언어를 구사하기 위해 지식 축척과 통찰력 배양을 통해 사고의 폭과 깊이를 추구한다. 본 연구는 조경설계에서 설계가의 '기억'을 기반으로 한 개념 형상화 유형 특성을 구명하고자 하였다. 연구결과는 다음과 같다. 첫째, 설계 아이디어는 설계가의 언어와 이미지 기억을 바탕으로 발상을 시작하여 대표적 의사소통 수단인 언어적 관점과 시각적 관점으로 형상 유형이 구성된다. 둘째, 조경설계의 언어적 개념 형상화는 2가지로 구성된다. '설계주제로서 제목의 상징적 언어'는 하나의 '구(句)'일 수 있으며, 위계를 두어 주(主)와 부(副)의 균형을 갖추어야 한다. '개념적 시나리오의 서술적 형상'은 서술적으로 개념을 표현하여 독자가 설계된 경관을 가상으로 경험하는 글이다. 셋째, 조경설계의 시각적 개념 형상화는 3가지로 구성된다. '다이어그램의 시각적 단순 형상'은 단순한 그래픽으로 상징물, 주석과 이미지, 키워드를 사용하여 쉽게 형상화된다. '개념스케치와 핵심 아이디어의 형상'은 초기 개념단계에서 물리적 요소와 공간에 대한 형태 속성 및 공간관계와 같은 아이디어의 핵심을 파악하는데 유용하다. '이미지 조합으로 새로운 형상을 창조하는 콜라주와 몽타주'는 새로운 시각을 제공하는 재료와 이미지의 모음으로 경관 현상을 기록하여 아이디어를 압축적으로 묘사하는 도구이다.