• 한국지하수토양환경학회지:지하수토양환경
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• 제21권4호
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• pp.30-41
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• 2016

The amount of groundwater related data is drastically increasing domestically from various sources since 2000. To justify the more expansive continuation of the data acquisition and to derive valuable implications from the data, continued employments of sophisticated and state-of-the-arts statistical tools in the analyses and predictions are important issue. In the present study, we employed a well established machine learning technique of Gaussian Process Regression (GPR) model in the trend analyses of groundwater level for the long-term change. The major benefit of GPR model is that the model provide not only the future predictions but also the associated uncertainty. In the study, the long-term predictions of groundwater level from the stations of National Groundwater Monitoring Network located within Han River Basin were exemplified as prediction cases based on the GPR model. In addition, a few types of groundwater change patterns were delineated (i.e., increasing, decreasing, and no trend) on the basis of the statistics acquired from GPR analyses. From the study, it was found that the majority of the monitoring stations has decreasing trend while small portion shows increasing or no trend. To further analyze the causes of the trend, the corresponding precipitation data were jointly analyzed by the same method (i.e., GPR). Based on the analyses, the major cause of decreasing trend of groundwater level is attributed to reduction of precipitation rate whereas a few of the stations show weak relationship between the pattern of groundwater level changes and precipitation.

• 패션비즈니스
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• 제5권4호
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• pp.73-88
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• 2001

The purpose of this study was to analyze the consumers' acceptance of the new changes in fashion trend and to project the future possibility of them based on the result of the analysis. It was identified in the review of fashion trend that the major change in the recent fashion trend was the turning of focus from 'Minimalism-influenced' to 'Maximalism-influenced'. Total 176 of Korean women, who preferred 'Minimalism-influenced' or 'Maximalism-influenced' style, were sampled and asked to response on a self-report questionnaire with stimuli developed for this study. According to the respondents’ acceptance and preference of either one of the two streams, each respondent was allocated to one of the two groups which were named as 'Minimal-preference group' or 'Maximal-preference group'. The reasons of their preference, traits in trend-related attitude and demographic variables of both groups were analyzed and compared. The degree of clothing involvement and fashion leadership of Maximal-preference group, who accepted the new trend, were found to be significantly higher than those of Minimal-preference group. Maximal-preference group had significantly higher level of income and expenditure on fashion than Minimal-preference group. The motives and reasons for their acceptance of each stream were also analyzed.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 1995년도 제22회 학술대회
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• pp.1-3
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• 1995

Aspects of the current trend in lubricants and future challenges are discussed. The discussion highlights key enviromnental issues regarding to resource conservation, toxicological consideration and environmental acceptability. Also highlighted are base stocks trends relative to hydroprocessed stocks (HVI, VHQ and XHQ), synthetic base stocks (PAO and organic esters) and biodegradable fluids (vegetable oils and special esters). Equipment severity and lubricant performance quality are briefly described.

• 한국가시화정보학회지
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• 제4권1호
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• pp.3-7
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• 2006

This study reviews on the classification of the scientific visualization and the tools in ocean-atmospheric sciences. We have classified scientific visualization according to the purpose and data size; the visualization tools used commonly in the field are also enlisted. The examples of visualization using scalar and vector data are presented, and their distinctions are noted. Lastly, it is contemplated on the near future trend in the field and provided future directions.

• 한국시스템다이내믹스연구
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• 제7권2호
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• pp.171-189
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• 2006

This article aims to develop a model for analysing the relationships among the factors affecting the national competitiveness and to explore the future trend of Korea's national competitiveness using a system dynamics approach. For this purpose the article examines the national competitiveness indexes being published by the international institutions such as IMD and WEF. The article also demonstrates how national competitiveness may be strengthened and finally suggests that the national competitiveness should be studied systematically in the future.

• 진공이야기
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• 제5권2호
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• pp.18-22
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• 2018

wo dimensional (2D) van der Waals (vdW) nanosheet semiconductors have recently attracted much attention from researchers because of their potentials as active device materials toward future nano-electronics and -optoelectronics. This review mainly focuses on the features and applications of state-of-the-art vdW 2D material devices which use transition metal dichalcogenides, graphene, hexagonal boron nitride (h-BN), and black phosphorous: field effect transistors (FETs), complementary metal oxide semiconductor (CMOS) inverters, Schottky diode, and PN diode. In a closing remark, important remaining issues of 2D vdW devices are also introduced as requests for future electronics and photonics applications.

• 한국시스템다이내믹스연구
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• 제15권3호
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• pp.37-59
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• 2014

This paper is to study dynamics of populations of religions. As human population is a crucial source of social dynamics, the religious population is a driving force that changes political and cultural landscape of society. Although many christian scholars have reported important causal factors in changing population of christian world, there are few studies on the dynamics of religious population in system dynamics. This paper interprets these dynamic mechanisms in terms of feedback loops and constructs a basic system dynamic model to forecast future trend of religious population in Korean society.

• 한국가구학회:학술대회논문집
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• 한국가구학회 2006년도 춘계학술발표대회 논문집
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• pp.99-113
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• 2006

With the economy reform carried on deeply step by step, forestry industry is playing a more and more important role in the country's economy. How to use the limited resources to make the largest economical benefit is a key point for the industry development, however it is exciting that our forest resources is on sustainable development gradually and forestry output value is also increasing every year, input and export volume is enlarged fast, add to reasonable strategy, no doubt that China's forestry can achieve a prosperous future.

• 기술혁신학회지
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• 제21권1호
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• pp.236-264
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• 2018

본 논문에서는 ICT(Information and Communications Technology) 산업 관련 기술을 주제로 경상북도의 특허출원 동향과 특허맵 중 하나인 특허 포트폴리오 분석을 적용하여 ICT 기술의 향후 방향을 살펴본 연구이다. 이에 본 연구는 경북지역 ICT 산업의 기술 동향 및 기술개발 실태를 특허정보를 통해 살펴보고, 특허 포트폴리오 분석을 통한 지역 ICT 산업의 기술방향 정도를 가늠하여, 연구개발전략 수립에 활용되는 것을 그 목적으로 한다. 경상북도에서 출원된 특허를 대상으로 국제특허분류(IPC: International Patent Classification) 별 기술동향 파악을 하였고 향후 미래유망기술 도출에 대해 분석하였다. 동향파악을 위해서는 ICT 분류코드에 의거하여 각 부문별로 출원된 특허에 대해 분석하였다. 그 결과 경상북도의 특허 출원 동향과 기술별 점유율 및 구간별 특허활동 현황, ICT 중분류 기술별 특허 출원 동향, ICT 기술시장 성장단계현황, 연구주체별 특허 출원 동향, 연구주체 간 공동연구 현황, 주요 출원인 특허 출원 동향 분석 등의 분석결과를 제시하였다. 또한 유망기술 도출을 통해 경북 ICT산업의 기술적 방향을 살펴보았다. 연구결과를 바탕으로 경북 ICT 산업의 기술 경쟁력 확보에 기여하고자 하였고, 더불어 향후 ICT 산업기술의 지향 방향과 기술정책 전략 수립에 도움이 되고자 하였다.

• 전자통신동향분석
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• 제32권5호
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• pp.65-73
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• 2017

A holography technique optically reconstructs a three-dimensional object in space to provide a natural sense of depth and volume to the observer, thereby providing an ultimate 3D image capable of solving the problem of "vergence-accommodation conflict" occurring in a conventional stereoscopic imaging system. In this paper, we present a technical framework for measuring the performance and evaluating the quality of a holographic display, which enables a quantitative measurement of the optical and physical properties that affect the performance and quality of a holographic display. In addition, we provide the trend regarding standardization related to holographic display measurements. Although this trend has barely started, research activities related to holographic display measurements and quality evaluations are expected to grow in the near future.