• ETRI Journal
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• 제39권5호
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• pp.683-694
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• 2017

Several studies have focused on multimedia transmission over wireless sensor networks (WSNs). In this paper, we propose a comprehensive and robust model to transmit images over cognitive radio WSNs (CRWSNs). We estimate the spectrum sensing frequency and evaluate its impact on the peak signal-to-noise ratio (PSNR). To enhance the PSNR, we attempt to maximize the number of pixels delivered to the receiver. To increase the probability of successful image transmission within the maximum allowed time, we minimize the average number of packets remaining in the send buffer. We use both single- and multi-channel transmissions by focusing on critical transmission events, namely hand-off (HO), No-HO, and timeout events. We deploy our advanced updating method, the dynamic parameter updating procedure, to guarantee the dynamic adaptation of model parameters to the events. In addition, we introduce our ranking method, named minimum remaining packet best channel selection, to enable us to rank and select the best channel to improve the system performance. Finally, we show the capability of our proposed image scrambling and filtering approach to achieve noticeable PSNR improvement.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.402-405
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• 2008

This paper is a proposal of Sentinel Asia for Environment (SAFE). The essential to this project is to help environmental agencies in Asia to set up an environmental monitoring system with satellite observation data. It is focused on an environmental issues originated from anthropogenic events detected as land cover and land use change in Asians' daily human life including; agriculture, global warming gas, urban environment and forest resources. It is leaded by Japan Aerospace Exploration Agency (JAXA) along with University of Tokyo and Asian Institute of Technology in Thailand under the umbrella of Sentinel Asia which is dedicated to disaster monitoring issues. It is expected to initiate a information outgoing through WWW for Asian countries to set up their national land information system focusing on environmental changes.

• 한국철도학회논문집
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• 제12권5호
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• pp.605-612
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• 2009

본 논문은 철도안전업무종사자가 변화된 직무환경에서 일상적인 업무수행과정에서 겪는 스트레스 요인이 무엇인지를 실증적으로 밝히고, 이들 요인을 제도적으로 관리할 필요가 있다는 관점에 입각하여, 특히 서구에서 시행되고 있는 스트레스상황 및 비상상황대처능력, 단독 업무수행능력을 중심으로 그 제도화의 가능성과 여타의 스트레스 관리방안을 다루었다.

• 천문학회보
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• 제44권1호
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• pp.62.1-62.1
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• 2019

Current large observational projects perform both static and dynamic sky surveys. The Thirty-Minute Target of Opportunity (TMT) is the project focusing on the dynamic sky survey using Korea Microlensing Telescope Network (KMTNet) that is the best observing system to investigate the dynamic sky. TMT aims to perform and experiment on following components : 1) to select transient or variable sources having hour to day scale cadences for future science cases, 2) to optimize the observation strategy for these objects, 3) to provide automated photometric pipelines for the time series data, and 4) to test the data release environment for all astronomers. In the near future, it is expected that a huge number of events will be alerted through large area surveys such as LSST. Therefore, the TMT project will provide opportunities to prepare the future large survey era as well as to understand the nature of interesting astronomical events.

• 기록학연구
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• 제71호
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• pp.131-167
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• 2022

이 논문은 제16대 대통령기록 중에서 기록관리비서실이 대통령 행사와 관련해서 생산한 '말씀록'의 생산 과정을 둘러싼 기록들의 내용을 분석하였다. 이를 통해 대통령기록관에 이관된 참여정부의 대통령 행사 기록의 생산 맥락을 올바로 이해한 가운데 관련 기록을 연계, 조직하여 적극적으로 활용하는 방안을 제안하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 추계학술대회
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• pp.117-119
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• 2016

빅데이터 분석 결과를 제공하는 사이트들은 분석 결과에 있어 단순한 수치결과만을 제시해주고 있으며, 그 결과에 대한 사회현상 및 트랜드에 대한 해석을 제공하지는 않고 있다. 이러한 점에서 본 연구에서는 빅데이터 분석 결과의 검토를 통해서 브랜드와 선호도를 파악하는 방법을 통하여 빅데이터 분석결과에 대한 해석 방법을 제시하고 한다.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.75-84
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• 2024

The novel literature of the Romantic era was characterized by emotionally charged and imaginatively rich works. During this period, authors brought a new flow to the literary scene by exploring romantic themes in their unique styles. Various themes and genres emerged, diversifying the novel's target audience. It was during this era that Emily Brontë's "Wuthering Heights" was published. In this paper, we aim to explore the theme of alleviating internal turmoil within this novel, focusing on one enigmatic character, Heathcliff, among the main protagonists. We will illuminate Heathcliff's tumultuous past, analyzing the intricate connections of events that led to profound psychological anguish. By scrutinizing his actions and outward expressions, this paper seeks to understand the manifestation of his internal pain in interactions with other characters. We present a more comprehensive understanding of "Wuthering Heights," transcending the conventional boundaries of literary analysis. It not only proposes practical methods for alleviating internal turmoil but also sheds light on the timeless theme of divine love, offering readers a profound framework for interpreting the complexities of human relationships and the pursuit of inner peace.

• 대한가정학회지
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• 제42권11호
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• pp.167-187
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• 2004

This study investigated the post-divorce adjustment level, by focusing on life satisfaction, health, stress and resource factors, for divorced men and women in their 20s and 30s. Also, it examined how these factors affect life satisfaction and health. For this empirical analysis, data were collected from 114 divorced men and 112 divorced women, living in the Seoul metropolitan area, from 23rd Sep. to 20th Oct., 2002. The questionnaire for the survey dealt with demographic information, life satisfaction, health, stress and resource factor scales. The major findings of the research project were as follows.: first, the life satisfaction and health levels of the divorced men and women were low. Especially, divorced women had more physical and psychological problems than men. Second, the divorced men's satisfaction was affected by pre-divorce life events and education level, whereas the divorced women's satisfaction was affected by subjective economic dissatisfaction, pre-divorce tfe events, everyday life level when they were divorced, and social support. Finally, the attitude toward divorce of significant others and pre-divorce life events were important variables for the divorced men's health, whereas attachment toward ex-spouse, pre-divorce life events, pre-divorce marital conflict and social support were affectable variables for the divorced women's health. The results of current research are expected to contribute to the divorce adjustment programs according to gender.

• 패션비즈니스
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• 제22권1호
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• pp.1-19
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• 2018

The purpose of this study is to analyze the fashion style of Kate Middleton, the Royal Family, and to examine the social and cultural influence of Middleton fashion. We selected 314 photographs collected from a Google site and Gettyimages.com April 2011-December 2016 as the final research subjects. We categorized the situation by domestic events, royal events, diplomatic activities, and social contribution activities, and analyzed fashion styles focusing on item composition, color, material, silhouette, detail, trimming, and length. As a result of the study, the one piece was the highest in the combination of items, and the color was the most in white. The color tones were mostly vivid, and the material texture was silky. The image was classic, and the dress code was high in semi-formal. In a situational style, the coat was the most common at the Royal Family events and blue or white of the light tones appeared in the formal style of the classic image. In domestic events, there were many silky textures of modern image, and vivid, strong tonal knee length H line dress was the most prevalent. During diplomatic activities, various colors such as red, green, gray appeared in addition to blue or white and in social contribution activities, many dresses of vivid and dark tones of red appeared in the dress code as semi-formal. In conclusion, the stylistic features of Kate Middleton and the Royal Family are largely in the form of royal and noble, low cost and chic, and body-conscious styling.

• 한국조리학회지
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• 제14권4호
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• pp.469-483
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• 2008

The motives of festival attendance have been used as a valuable marketing tool for promotion and understanding segment characteristics. This study attempted to segment the food festival market based on delineated motives and find the difference of characteristics and satisfaction among the segments. The study also explored the influence of motivation factors on satisfaction. The results are as follows : (1) Derived factors of the motivation of food festival attendance were 'food', 'information', 'education', 'cultural events', and 'experience'. (2) A cluster analysis identified two segments for five motivation factors. Two segments named 'utilitarian motivation group' and 'hedonic motivation group' were found to be different according to age, occupation, income, company, information source. (3) Two groups show the difference on satisfaction about festival programs. Utilitarian motivation group was more satisfied with 'holiday food performance' and 'food performance', whereas hedonic motivation group presented more satisfaction with 'cocktail show'. (4) Three(cultural events, food and information) out of five motivation factors had significant influence on satisfaction.