• Information and Communications Magazine
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• v.23 no.6
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• pp.39-52
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• 2006

데이터 전송률이 고속화되고 있는 이동통신환경에서 한정된 주파수에서 효율적으로 데이터를 전송하는 방법에 대한 요구가 증대하고 있다. 이러한 과제를 해결하기 위한 방법으로써 다중 안테나 기술이 표준 시스템으로서 논의되고 있다. 차세대 통신 시스템으로서 고려되고 있는 3GPP LTE (Long Term Evolution)에서도 다양한 MIMO (Multi-Input Multi-Output) 기술들이 제안되고 있다. 현재 이루어지고 있는 MIMO 표준화 동향을 살펴보고, 제안된 기술들의 특징들을 정리한다.

• Monthly Duck's Village
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• s.189
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• pp.22-27
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• 2019

한국농촌경제연구원은 지난 1월 23일 서울 잠실 롯데호텔에서 '농업 농촌의 가치와 기회, 그리고 미래'라는 대주제로 '농업전망 2019' 대회를 개최했다. 총 3부로 나눠 진행된 이날 농업전망 2019에선 1부 '2019년 농정 방향과 한국농업 미래', 2부 '농업 농촌의 가치와 기회를 향한 농정의 핵심이정표', 3부 '산업별 중장기 미래' 등의 주요 농정이슈와 과제를 발표했다. 김창길 농경연 원장은 이날 개회사를 통해 "올해도 농경연은 농업 농촌이 변화하는 대내외 환경에 대응하고 가치와 기회를 찾아 앞으로 나아갈 길을 제시하는데 노력하겠다"고 밝혔다. 이날 발표 내용 중 가금산업-오리관련 이슈와 오리 및 오리고기 사육동향과 수급동향을 정리했다.

• Annual Conference of KIPS
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• 2007.11a
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• pp.403-406
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• 2007

현재 소프트웨어 품질에 대한 국제 표준이 새롭게 제정되어지고 있다. 소프트웨어 품질 측정을 위해서 사용하던 소프트웨어 품질 관련 국제 표준 문서인 ISO/IEC 9126을 소프트웨어 품질 측정 과정에 대한 표준 문서 ISO/IEC 14598과 함께 내용을 새롭게 정리하여 ISO/IEC 25000 시리즈 SQuaRE 프로젝트를 진행하고 있다. 소프트웨어 품질을 좀더 정량적으로 평가하기 위한 방안으로 새롭게 제정되어지고 있는 국제 표준에 대한 동향을 조사하고 국내 표준 동향 조사를 통해서 앞으로의 과제에 대하여 연구한다.

• Science of Emotion and Sensibility
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• v.20 no.1
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• pp.115-132
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• 2017

Differences in reaction time and accuracy were compared among driver groups of middle-, old-, and stroke old-age drivers using various reaction time tasks including simple reaction task, 2-choice task, 4-choice task with different stimuli eccentricity, search task, and moving target detection task. The results can be summarized as followings. First, although overall reaction time tended to be slowed with age and stroke, stroke old drivers showed significantly slower reaction time than the other driver groups when the stimuli were presented in a large eccentricity. Second, differences in reaction time for 2-choice task and moving target detection task seemed to be determined mainly by participants' simple reaction time. Third, the search task which required temporary retention of previously presented stimuli was found to be more sensitive in discriminating difference in reaction time between middle-age drivers and old-age drivers (including stroke old drivers). Fourth, reaction accuracy of old (and stroke old) drivers decreased when more stimuli alternatives were presented and temporary retention for stimuli was required. Altogether, memory demand in reaction time task can be sensitive to evaluate performance for different age groups, whereas size of useful field of view for brain stroke.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.1
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• pp.202-210
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• 2014

This paper is to discover selection indicator for academia-industrial cooperation R&D project. Existing Project lacks careful consideration for participant enterprise. But, This project must be focused on enterprise for the goal of project is to improve business competition. Therefore, we analyze the survey result of enterprise satisfaction and deduct the factor of satisfaction by statistical analysis like One-way ANOVA and Regression. The study says that collaboration time, the time of planning of commercialization, technology transfer and the level of goal achievement improve enterprise satisfaction. And it implies needs for plan of manpower input and commercialization at the selecting phase. This paper is significant that it can improve project system by satisfaction. We expect that this result is utilized by planning and management.

• The Journal of Society for e-Business Studies
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• v.17 no.2
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• pp.165-187
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• 2012

Improvements on the incumbent R&D project management structure and performance evaluation criteria in the telecommunication and broadcasting area have been called for. There have been attempts to develop alternative R&D project performance evaluation criteria. In an attempt to develop an alternative measure, this study integrates two different perspectives on R&D projects and various criteria currently being used by many foreign and domestic institutes. As a result, we have developed an alternative R&D project performance evaluation instrument. Then, we have applied the instrument to Korean cases in order to validate it. The new R&D project performance evaluation criteria can contribute to an improvement on the management of R&D projects in the telecommunication and broadcasting area.

• Journal of the Korean Geographical Society
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• v.47 no.6
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• pp.870-883
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• 2012

This study aims to summarize recent discussions on naming the sea between Korea and Japan and to draw some research topics of the geographical toponymy. The International Hydrographic Conference and the United Nations Conference on the Standardization of Geographical Names held in 2012 repeatedly saw clearly different positions of Korea and Japan on the naming of the sea. From the debates, four topics appeared distinctly which deserve receiving continuous interests in the field of geographical toponymy. These include: necessity of dual naming and characteristics of, and perceptions on the object of dual naming; political economic nature of the sea, e.g. semi-enclosed sea, EEZ, and relevant use of names; relationship between the sea containing strong emotional ties and its naming; additional definition of toponymic terminologies to proceed with more objective and logical discussions.

• Journal of Educational Research in Mathematics
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• v.24 no.2
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• pp.103-124
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• 2014

The process of analogical reasoning can be conventionally summarized in five steps : Representation, Access, Mapping, Adaptation, Learning. The purpose of this study is to develop more detailed model for reason of analogies considering the distinct characteristics of the mathematical education based on the process of analogical reasoning which is already established. Ultimately, This model is designed to facilitate students to use analogical reasoning more productively. The process of developing model is divided into three steps. The frist step is to draft a hypothetical model by looking into historical example of Leonhard Euler(1707-1783), who was the great mathematician of any age and discovered mathematical knowledge through analogical reasoning. The second step is to modify and complement the model to reflect the characteristics of students' thinking response that proves and links analogically between the law of cosines and the Pythagorean theorem. The third and final step is to draw pedagogical implications from the analysis of the result of an experiment.

• The Korean Journal of Archival Studies
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• no.63
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• pp.227-268
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• 2020

Microfilm has been used as an important media for enhancing the long term preservation and improving access to records. However, because of technological changes, there have been discussion about whether we should keep using microfilm. This paper presents survey results to review the preservation methods such as microfilming and digitization. The content is organized according to the trends found in the survey from six archives and libraries, including Germany, France, the United Kingdom, and Japan. Moreover, we refer to other papers from the USA and Japan to require further review if we can accept digitized records as the original records, etc. The rest consists of four parts: the use of microfilm as a storage media for preservation, the authenticity of digitized records, the management of records on microfilm, and the preservation of electronic media. Finally, we would like to suggest the way to improve preservation systems and digitize records more widely.

• Land and Housing Review
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• v.12 no.4
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• pp.15-30
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• 2021

Korean urban development cooperation is gradually expanding into Latin America and the Caribbean (LAC) region, but strategies to encourage domestic market players to participate are insufficient. This paper investigated the Colombian urban planning system, urban development projects, and Korean projects in Colombia, which leads to implications for international cooperation in LAC. This research, first, compares the national and regional urban planning systems of Colombian major cities, Bogotá and Medellín. Second, case studies are carried out with a land readjustment project, a Macro project for large-scale public rental housing supply, and urban development cooperation between Korea and Colombia. By doing so, the role and the directions for Korean urban development cooperation with LAC such as Colombia are discussed and proposed. The findings suggest, first, aid projects through Official Development Assistance (ODA) should establish urban networks in recipient countries. Second, it is necessary to understand the financing structure for urban development cooperation projects that are different from infrastructure projects. Third, the successful case of urban development cooperation should be demonstrated by making the development period and size optimal and manageable.