• ETRI Journal
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• 제40권1호
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• pp.72-88
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• 2018

In the fifth generation (5G) era, the radio internet protocol capacity is expected to reach 20 Gb/s per sector, and ultralarge content traffic will travel across a faster wireless/wireline access network and packet core network. Moreover, the massive and mission-critical Internet of Things is the main differentiator of 5G services. These types of real-time and large-bandwidth-consuming services require a radio latency of less than 1 ms and an end-to-end latency of less than a few milliseconds. By distributing 5G core nodes closer to cell sites, the backhaul traffic volume and latency can be significantly reduced by having mobile devices download content immediately from a closer content server. In this paper, we propose a novel solution based on software-defined network and network function virtualization technologies in order to achieve agile management of 5G core network functionalities with a proof-of-concept implementation targeted for the PyeongChang Winter Olympics and describe the results of interoperability testing experiences between two core networks.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.531-532
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• 2017

oneM2M의 domain은 Device, Network, Application domain으로 구분되며, 다양한 device에서 생성되는 데이터를 IoT/M2M gateway를 통해 취합, Core/Access Network를 거쳐 적합한 IoT/M2M Infrastructure에 전달한다. 그러나 device가 동일한 지역 내에 위치하는 Infrastructure에 데이터를 전달 할 경우에도 Core/Access Network에 접근이 필요하다. 본 논문에서는 oneM2M domain에 지역 network domain의 개념을 추가하여 데이터의 지역정보를 판단 후 전송, 불필요한 Core/Access Network의 접근을 방지하는 지역 gateway 기반 데이터 전송방법을 제안한다.

• International journal of advanced smart convergence
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• 제11권1호
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• pp.117-126
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• 2022

Corporate social responsibility (CSR) is the basic strategy for enterprises to obtain competitive advantages, and reflects the most basic value orientation and development concept of enterprises. The purpose of this study is to explore the relationship between corporate culture, innovation ability and core competitiveness of enterprises from the perspective of corporate social responsibility, and to establish a model and analyze the survey data of 32 agricultural science and technology enterprises in Tianjin by using SPSS23.0. As a result of the study, we found that corporate social responsibility (Ethical responsibility, Philanthropic responsibility) has a significant positive impact on corporate culture and innovation ability, corporate culture has a significant positive impact on innovation ability and corporate core competitiveness, and innovation ability has a significant positive impact on corporate core competitiveness. Therefore, it is suggested that agricultural science and technology enterprises should fulfill their social responsibilities, form a unique corporate culture, serve agriculture with science and technology, and constantly improve the ability of agricultural science and technology innovation, so as to enhance the core competitiveness of enterprises.

• 한국초등과학교육학회지:초등과학교육
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• 제37권2호
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• pp.147-160
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• 2018

The purpose of this study is to compare the elementary science curriculum and textbooks of Korea, the United States, Japan, and Singapore to know how the contents on particulate concept of matter is introduced and expressed. In Korea, particulate concept of matter was adopted as a term for 'molecules' in the 3rd through 6th curriculum, and the term for 'particles' was adopted in the 2009 revised curriculum. In the United States, NGSS adopted the term 'particle' in fifth grade. Japan presented the concept of 'particle' as a core concept of matter in the commentary, and the expressions 'particles' were being introduced in the textbooks. But it did not cover particulate nature of matter at the elementary school level in Singapore. An analysis of elementary textbooks in Korea, the United States and Japan except Singapore showed particulate expressions in 'dissolution', 'state change of water', 'gas pressure and volume', 'combustion and extinguishment' units. Korean textbook was only being introduced in 'dissolution' and 'gas pressure and volume', but in the textbooks of Japan and the United States, water was expressed as particles in 'state change of water' unit. Discussion and implication on the introduction of particulate concept to elementary science curriculum and textbooks were suggested based on the results.

• 한국간호교육학회지
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• 제20권2호
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• pp.276-287
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• 2014

Purpose: The purpose of this study was to explore the clear concept of organizational commitment for effective nursing personnel management. Method: This study was conducted using Walker & Avant's conceptual analysis framework(2005). Results: Organizational commitment was identified with six attributes: acknowledgment, acceptance, trust, sacrifice, attachment, regulation. Antecedents of organizational commitment were personal characteristics, perceived organizational support, empowerment, fair compensation, job satisfaction, job autonomy, organizational culture, and leadership. Consequences of organizational commitment were turnover intention, job performance and organizational citizenship behavior. Conclusion: Organization commitment is a core concept for understanding the management of nursing personnel. Appropriate instruments to operationalize the concept of organizational commitment including six attributes need to be developed.

• 한국간호교육학회지
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• 제5권2호
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• pp.219-231
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• 1999

Health is an important concept within the health component of nursing paradigm. And health concept is a core component to determine health behavior according to individual's health perception. Health habits during the period of university student will be affecting health behavior of the adult period. The purpose of this study was to analyze health concept of the university students in Korea and to provide the strategy of health care for the university students. The method of this research was a descriptive study using a self-report questionaire. The subjects were 301 students of university and their age was from 19 to 30. The results of this study were as follows: 1. Health concepts perceived by the university students were 'wholeness without difficulty', 'vitality', 'harmony', 'comfort', 'Good condition and fitness of physical and psychological condition', 'soundness', 'happiness', 'enabling' 'smoothness'. 2. Health was perceived by the subjects as an essential and an important component of life.

• 대한지역사회영양학회지
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• 제26권2호
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• pp.77-92
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• 2021

Objectives: Food literacy (FL) can be an important concept that embodies the nutritional capabilities of individuals. The purpose of this study was to introduce the definition and core elements of FL from previous literature, to summarize measurement tools and intervention programs with FL, and to suggest the direction of future research and programs to integrate the concept of FL. Methods: The literature review was conducted through PubMed and Google Scholar databases by combining the search term 'food literacy' with 'definition', 'measurement', 'questionnaire', 'intervention', and 'program'. Among the 94 papers primarily reviewed 31 manuscripts that suited the purpose of the study were used for analyses. Results: There is no consensus on the definition of FL that encompasses the multidimensional aspects of the concept. The definitions of FL were slightly different depending on the authors, and the interpretation of the core elements also varied. Based on the review, we propose a framework of FL that is in line with the current discussion among international researchers. This focuses on the core elements adapted from health literacy, namely functional, interactive, and critical FL. Specifically, we suggest some detailed elements for interactive and critical FL, which were often the subject of divergent views among researchers in previous literature. We found that most of the tools in the reviewed literature provided information on validity and reliability and were developed for a specific target population. Also, most of the tools were focused on functional FL. Similarly, most of the interventions targeted functional FL. Conclusions: This study reviewed the definition and core elements of FL, available measurement tools, and intervention programs using validated tools. We propose the development of tools with sound reliability and validity that encompass the three core elements of FL for different age groups. This will help to understand whether improving food literacy can translate into better nutritional intake and health status among individuals and communities.

• 정보교육학회논문지
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• 제24권2호
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• pp.167-176
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• 2020

본 연구에서는 SW교육의 새로운 방법의 일환으로 컴퓨팅 사고력 핵심 개념을 포함한 코딩 동화 및 코딩 동화 연계 언플러그드 활동을 개발하였으며 초등학생을 대상으로 수업을 적용하여 학습 동기 및 CT 핵심 개념 학업 성취도의 변화를 분석하였다. 코딩 동화 개발을 위해 전문가 집단 11인의 설문 조사 분석을 통해 컴퓨팅 사고력의 핵심 개념을 도출하여 타당성을 검증받았으며 도출된 컴퓨팅 사고력 핵심 개념을 활용하여 연구자가 직접 코딩 동화를 개발하였다. 코딩 동화 연계 언플러그드 활동 또한 연구자가 내용을 구성하였으며 수업 전, 후 컴퓨팅 사고력과 학습 동기의 변화 결과를 분석하였다. 수업 전, 후 컴퓨팅 사고력의 핵심 개념 학업 성취도 점수가 평균 54.44에서 83.10점으로 상승하였으며 학습 동기 또한 평균 점수 103.48에서 110.44로 향상되었다. 이를 통해 코딩 동화를 통한 SW학습이 학생들의 컴퓨팅 사고력 및 SW 학습 동기 증진에 효과적이라는 결과를 얻을 수 있었다.

• 정보처리학회논문지D
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• 제11D권2호
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• pp.361-370
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• 2004

ebXML은 XML기반의 새로운 국제 표준 전자상거래 프레임워크이다. 서로 다른 산업분야 간의 상호운용성은 하부 데이터 구조인 핵심 컴포넌트의 재사용을 통하여 가능하다. 이러한 상호운용을 위하여 서로 다른 기업 간의 상호작용을 정의하는 비즈니스 프로세스에서의 핵심 컴포넌트의 역할과 적용 가능성에 대한 분석을 통한 핵심 컴포넌트의 명확한 개념 정립이 필요하다. 따라서 이 논문에서는 ebXML과 핵심 컴포넌트의 역할을 알아보고 등록/저장소에 등록하기 위한 핵심 컴포넌트를 생성하는 핵심 컴포넌트 저장 시스템을 설계 및 구현한다. 이 논문의 핵심 컴포넌트 저장을 위한 시스템은 등록/저장소에 등록하기 적합한 핵심 컴포넌트 구조를 생성하고, 비즈니스 프로세스의 모델링 단계에서 새로운 비즈니스 정보 개체의 생성을 위해서 이용되거나 재 사용될 수 있다.

• 인지과학
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• 제28권3호
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• pp.173-191
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• 2017

The theories of cultural evolution hold subtly or clearly different stances about definition of culture, pattern of cultural evolution, biases that affect cultural evolution, and relationship between culture and organism. However, the cultural evolution theories have a common problem to solve: As the evolutionary theory of life tries to explain the early steps and the origin of life, the cultural evolution theories also must explain the early steps of the cultural evolution and the role of the human capability that makes cultural evolution possible. Therefore, explanations of the human's unique traits including the cultural ability are related to determine which one is the most plausible among many cultural evolution theories. Theories that tried to explain human uniqueness commonly depict the coevolution of gene (organism) and culture. We will explicitly call the niche construction theory and the dual inheritance theory the 'gene-culture co-evolutionary theory'. In these theories, the most important concept is the 'concept of positive feedback'. In this paper, we distinguish between core positive feedback and marginal positive feedback, according to whether the trait that the concept of positive feedback explains is the trait of human uniqueness. Both types of positive feedback effectively explain the generality of human uniqueness and the diversity of human traits driven by cultural groups. However, this positive feedback requires an end, in contrast to negative feedback which can be continued in order to maintain homeostasis. We argue that the co-evolutionary process in the gene-culture co-evolutionary theories include only the positive feedback, not covering the cultural evolution after the positive feedback. This thesis strives to define the coevolution concept more comprehensively by suggesting the potential relationships between gene and culture after the positive feedback.