• Nuclear Engineering and Technology
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• 제51권3호
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• pp.904-907
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• 2019

Nuclear energy remains one of the world's major energy sources, making up over 10% of global electricity generation in 2017. Public acceptance of nuclear energy is essential for its adoption. From a practical perspective, it is beneficial to have a simple indicator that can predict the actual adoption of nuclear energy. Based on practical experience, the authors suggest tolerance and self-sufficiency as potential indicators that may predict the adoption of nuclear energy. By evaluating the cross-sectional data of 18 countries in 2013, this research assesses the actual impact of tolerance and self-sufficiency on public acceptance in order to identify the validity of the two variables. The results indicate that the two variables are statistically significant, while public acceptance is insignificant in explaining national adoption of nuclear energy. This may be because tolerance reflects national willingness to accept potential risk, while self-sufficiency explains a government's likelihood of developing non-carbon energy sources.

• Journal of the Korean Statistical Society
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• 제23권2호
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• pp.271-292
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• 1994

The comparison of statistical experiments with a common parameter and parameter space is discussed using the concept of the Blackwell's sufficiency and the Shannon's entropy. Binomial and censored experiments are considered as applications. The loss of information is studied under teh aggregated experiments and truncated experiments, and summerized in some tables which make it possible to indicate the choice of an appropriate experiment.

• 농촌지도와개발
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• 제20권4호
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• pp.953-987
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• 2013

이 연구의 목적은 농촌 다문화가족의 자립인식 수준과, 자립을 위한 지원요구를 분석하는 것이다. 이 연구에서 밝혀진 주요결과는 다음과 같다. 첫째, 농촌 다문화가족의 자립인식 수준은 정보화영역에서 가장 낮았고, 사회심리관계영역에서 가장 높았다. 둘째, 사회보장 수혜 등 생활특성에 따라 농촌 다문화가족의 경제적 자립지원 요구를 카이자승검증한 결과, 의료보장을 받거나 또는 자녀교육 및 노후준비를 하지 않는 가족은 생활비 보조에 대한 요구가 유의미하게 더 높았다. 반면 의료보장을 받지 않거나 자녀교육 및 노후준비를 하는 가족은 농산물 판매교육, 농업기술교육, 창업지원에 대한 요구가 유의미하게 더 높았다. 셋째, 농촌 다문화가족의 PC보유율은 도시가족 보다 낮으며, 사회보장 수혜 등 생활특성에 따른 PC보유율의 차이는 유의미하지 않았다. 넷째, 사회보장 수혜 등 생활특성에 따른 다문화가족 자녀교육 또는 사회적 지원 요구의 차이는 통계적으로 유의하지 않았는데, 이러한 것들에 대한 요구가 다문화가족 전반을 포괄하는 보편성을 지님을 시사한다. 이상의 결과를 종합하여 볼 때 농촌 다문화가족에 대한 자립지원은 생활특성별, 영역별로 차별적이거나 통합적으로 접근되어야 할 것이다. 이 연구의 결과는 농촌 다문화가족의 자립을 지원하는 방안을 모색하는데 기초자료로 활용되어 질 것이다.

• Journal of Information Technology Applications and Management
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• 제20권4호
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• pp.293-313
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• 2013

Preproject phase is an important but often ignored research area in information systems field although it has an undeniable importance for successful project. The purpose of this study is to identify factors affecting project performance in preproject phase and to find empirically critical factors among them. After deriving 9 factors through literature review including clear project definition, project leader position, staffing efforts, preproject team expertise, preproject knowledge scope, preproject partnering, top-management support, resource sufficiency, and project climate, the study investigate the influence of those factors on project performance. The study results reveal that clear project definition, project climate, resource sufficiency, pre-project knowledge scope, project leader position have significant impact on project process satisfaction, a measure of project performance, but the other factors do not. Based on the empirical results, the study discuss academic and practical implications.

• Journal of information and communication convergence engineering
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• 제8권1호
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• pp.40-44
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• 2010

opportunistic spectrum access (OSA) allows unlicensed users to share licensed spectrum in space and time with no or little interference to primary users, with bring new research challenges in MAC design. We propose a cognitive MAC protocol using statistical channel information and selecting appropriate idle channel for transmission. The protocol based on the CSMA/CA, exploits statistics of spectrum usage for decision making on channel access. Idle channel availability, spectrum hole sufficiency and available channel condition will be included in algorithm statistical information. The model include the control channel and data channel, the transmitter negotiates with receiver on transmission parameters through control channel, statistical decision results (successful rate of transmission) from exchanged transmission parameters of control channel should pass the threshold and decide the data transmission with spectrum hole on data channel. A dynamical sensing range as a important parameter introduced to maintain the our protocol performance. The proposed protocol's simulation will show that proposed protocol does improve the throughput performance via traditional opportunistic spectrum access MAC protocol.

• 정보처리학회논문지A
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• 제15A권5호
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• pp.295-300
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• 2008

본 논문은 화랑문제 분야에 관한 것으로, 다각형의 계층구조에서 경비충분집합에 될 수 있는 기하학적인 요소들에 관해 다루었다. 경비충분 집합이 될 수 있는 기하학적인 요소로 다각형의 삼각화를 고려하였고, 다각형의 삼각화한 대각선분에 대해 완전가시성으로 양쪽을 다 감시할 경우 경비충분집합이 되는 삼각형의 부류가 볼록 다각형, 단변단조 다각형, 소용돌이 다각형임을 보였고, 그 외의 별모양 다각형, 단조 다각형, 완전외부가시성 다각형에서는 경비충분집합이 되지 못함을 보였다.

• Journal of the Korean Statistical Society
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• 제4권2호
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• pp.97-109
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• 1975

To gain knowledge about the unknown state $\theta$ of nature, we perform experiments. Sufficiency of an experiment for another experiment has been introduced for the comparison of experiments. The knoledge before and after an experiment makes it possible to discuss the amount of information provided by the experiment.

• 대한영양사협회학술지
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• 제10권3호
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• pp.272-283
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• 2004

This study was conducted to develop menugen program: Korean recommended menu planning and search based on internet to promote self sufficiency of food in Korea. This program manipulate menu and search 432 Korean recommended menus which have been developed in combination of population characteristics of 9 age level, 3 residential areas, 3 income groups, four seasons and male or female. Clients can select the high self sufficiency recommended menu by inputting their age, residental area, income, season and sex in using Menugen program. MenuGen can analyze nutrients and compare with Korean Recommended Allowance about clients' menu based on their age and sex. It can access the food, dish and menu databases. And also client can use MenuGen program for menu planning and analysis nutrients. Client's menu data can be store, delete, modify and print through MenuGen too. It will be able to read the nutrition analysis data of the foods, the dishes and the menu. Therefore it provides convenient user interface to not only users but also dietitians and nutritionists, who take charge of making a menu, and experts in the field of food and nutrition. MenuGen will help the nutrition policy accomplishment and the food self-supply rate improvement of the nation with use of menu drawing up program of internet base.

• Communications for Statistical Applications and Methods
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• 제23권2호
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• pp.93-103
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• 2016

In the paper, we discuss dimension reduction of predictors ${\mathbf{X}}{\in}{{\mathbb{R}}^p}$ in a regression of $Y{\mid}{\mathbf{X}}$ with a notion of sufficiency that is called sufficient dimension reduction. In sufficient dimension reduction, the original predictors ${\mathbf{X}}$ are replaced by its lower-dimensional linear projection without loss of information on selected aspects of the conditional distribution. Depending on the aspects, the central subspace, the central mean subspace and the central $k^{th}$-moment subspace are defined and investigated as primary interests. Then the relationships among the three subspaces and the changes in the three subspaces for non-singular transformation of ${\mathbf{X}}$ are studied. We discuss the two conditions to guarantee the existence of the three subspaces that constrain the marginal distribution of ${\mathbf{X}}$ and the conditional distribution of $Y{\mid}{\mathbf{X}}$. A general approach to estimate them is also introduced along with an explanation for conditions commonly assumed in most sufficient dimension reduction methodologies.

• 한국통신학회논문지
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• 제28권6B호
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• pp.544-552
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• 2003

본 논문에서는 단일 채널에서 동작하는 무선인식 시스템에서 다수의 트랜스폰더가 접근할 때 데이터 충돌을 방지 할 수 있는 명령 코드 충족 알고리즘을 제안하였다. 기존에 사용되고 있는 시간 영역 방법에서는 무조건 충돌을 발생시키지만, 명령 코드 충족 알고리즘은 명령 코드를 충족해야만 데이터를 송신할 수 있게 구현함으로써 데이터 충돌을 방지하였다. 만약 트랜스폰더에서 데이터를 송신하는 중 또 다른 트랜스폰더가 데이터를 송신한다 면 인식거리의 차이에 의해서 데이터 도착속도가 틀려짐을 이용하여 원하는 데이터만 수신할 수 있게 하였다. 제안된 명령 코드 충족 알고리즘을 적용하기 위하여 13.56MHz대역의 무선인식 시스템을 제작하여 1비트 데이터 전송 시간인 14$\mu\textrm{s}$ 차이를 확보함으로써 데이터 충돌 방지하고 그로인한 데이터 손실이 방지됨을 실험을 통하여 입증하였다.