• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.396-404
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• 2022

Online social networks contain a large amount of data that can be converted into valuable and insightful information. Text mining approaches allow exploring large-scale data efficiently. Therefore, this study reviews the recent literature on text mining in online social networks in a way that produces valid and valuable knowledge for further research. The review identifies text mining techniques used in social networking, the data used, tools, and the challenges. Research questions were formulated, then search strategy and selection criteria were defined, followed by the analysis of each paper to extract the data relevant to the research questions. The result shows that the most social media platforms used as a source of the data are Twitter and Facebook. The most common text mining technique were sentiment analysis and topic modeling. Classification and clustering were the most common approaches applied by the studies. The challenges include the need for processing with huge volumes of data, the noise, and the dynamic of the data. The study explores the recent development in text mining approaches in social networking by providing state and general view of work done in this research area.

• Journal of Information Processing Systems
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• 제13권3호
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• pp.599-617
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• 2017

Due to the rapid growth and expansion of the Internet, the digital multimedia such as image, audio and video are available for everyone. Anyone can make unauthorized copying for any digital product. Accordingly, the owner of these products cannot protect his ownership. Unfortunately, this situation will restrict any improvement which can be done on the digital media production in the future. Some procedures have been proposed to protect these products such as cryptography and watermarking techniques. Watermarking means embedding a message such as text, the image is called watermark, yet, in a host such as a text, an image, an audio, or a video, it is called a cover. Watermarking can provide and ensure security, data authentication and copyright protection for the digital media. In this paper, a new watermarking method of still image is proposed for the purpose of copyright protection. The procedure of embedding watermark is done in a transform domain. The discrete cosine transform (DCT) is exploited in the proposed method, where the watermark is embedded in the selected coefficients according to several criteria. With this procedure, the deterioration on the image is minimized to achieve high invisibility. Unlike the traditional techniques, in this paper, a new method is suggested for selecting the best blocks of DCT coefficients. After selecting the best DCT coefficients blocks, the best coefficients in the selected blocks are selected as a host in which the watermark bit is embedded. The coefficients selection is done depending on a weighting function method, where this function exploits the values and locations of the selected coefficients for choosing them. The experimental results proved that the proposed method has produced good imperceptibility and robustness for different types of attacks.

• 스마트미디어저널
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• 제1권4호
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• pp.84-89
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• 2012

본 연구의 목적은 체험프로그램에 대한 개발의 필요성이 제기됨에 따라 고등학교 교사를 대상으로 고등학교교육과정의 생명과학 교과서에서 내용요소를 추출하기 위한 연구이다. 교육 전문가를 중심으로 위원회를 조직하여 체험프로그램의 내용요소 추출을 위한 조사도구를 개발하였다. 개발 사용한 검사 도구는 생명과학 교과 중 체험프로그램에 반영 요구, 체험프로그램에 포함할 내용 영역이었다. 1개월간(2012. 4) 대전광역시 고등학교 46개교에 근무하는 생명과학 교사 전체를 대상으로 조사하였다. 응답자는 전체 53명이었다. 연구결과, 유전과 생명과학을 포함하는 체험프로그램이 되도록 하여 15개 중단원을 포괄해야한다. 프로그램에서 다루어야할 하위 내용은 '생명공학의 기술과 이용'을 포함한 32개 내용이다.

• 한국의상디자인학회지
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• 제25권3호
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• pp.1-16
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• 2023

The purposes of this study were to investigate bag purchasing behaviors and design preferences of male and female adult consumers, and to find the differences depending on sex and age variable. A survey was conducted on 400 male and female adults from 20s to 50s. The questionnaire consisted of bag purchase behaviors, bag design preferences, and the subjects' demographic characteristics. The data were analyzed by Cronbach's α, factor analysis, x² test and t-test using SPSS. The results were as follows. First, as bag selection criteria, four factors (practicality, symbolism, aesthetics, and economics) were derived, and adult consumers considered economics as the most important among the factors. As for purchasing information sources, three factors (media, human resources, and store) were derived, and adult consumers considered human resources and store information sources more important than media. The main motive for purchasing bags was age and damage of the owned products, and Internet shopping malls were the most common purchasing place. The average annual cost of purchasing bags was 100,000 to 300,000 won, and the frequency of purchase was about once a year. Second, as bag preference images, four factors (individual, romantic, active, and classic image) were derived, and adult consumers preferred classic images the most. The shoulder bag was the most preferred as the bag shape, and black was the most preferred bag color. For the material, natural leather was the most preferred, and for the size, medium size was the most preferred. Third, bag purchasing behaviors and design preferences showed many significant differences according to the sex and age of the consumers. Therefore, the results of this study suggests that bag companies need to establish product development and marketing strategies in consideration of differences according to the sex and age group of adult consumers.

• 한국기록관리학회지
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• 제1권2호
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• pp.101-119
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• 2001

전자기록물의 정의와 구성요소를 설명하고 보존 개념을 재정립하였다. 전자적인 환경에서 기록물을 장기보존을 위한 접근방법과 요구조건을 논의하였다. 디지털 환경에서의 보존은 신뢰성 있는 진본 기록물 자체에 대한 보존과 접근가능성을 보장하는 것임을 알 수 있었다. 전자기록물을 장기보존하기 위해서는 디지털 환경 변화에 따른 지속적인 변환과 기록물을 생산한 소프트웨어에 독립적인 표준포맷 전략을 선택할 필요가 있다. 그리고 이러한 전략을 통하여 전자기록물의 무결성을 보장할 수 있도록 처리절차와 관련 정보를 메타테이터화 하여야 한다. 전자기록물 보존시스템은 크게 등록처리, 보존처리, 접근처리와 시스템 전체를 관리하는 기록물관리 시스템으로 구성하였다. 또한 보존매체의 선택 기준과 안전 및 재해복구의 개념을 도입하였다.

• 한국식품조리과학회지
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• 제29권4호
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• pp.399-406
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• 2013

The purpose of this study was to investigate eating habits, healthy eating behaviors, food preference etc. of university students for them to enjoy delightful and healthy campus life and offer preliminary data to the related educational facilities and households for them to make use of the data for making out a menu. We conducted survey aiming at 4-year-course students in Jeonbuk area and survey period was from May 6th of 2013 to May 24th of 2013. The result are as followings. First, food habit evaluation with 10 questions shows that they are inclined to have refreshments, water, vegetables, fruits, grains and protein food often and also eat food blandly. So, we consider this finding is generally positive. Second, through the research on their healthy eating behaviors, we learned their interests in healthy food is average and their selection criteria for healthy food is nutrition value. Information sources for healthy food are mainly TV or mass media and good healthy food in their opinion is Korean food. Third, the findings of food preference show university students like the white rice most but don't like the rice with beans most in terms of rice type. We also found their favorite food is fried rice, favorite noodle is spaghetti, favorite soups are thick beef soups, favorite broth is potato and pork rib broth, favorite stew is kimchi stew, favorite steamed dish is braised short ribs and favorite meat is pork.

• 지역사회간호학회지
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• 제32권3호
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• pp.312-324
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• 2021

Purpose: Tuberculosis is an infectious condition with a high disease burden, and the stigma in patients with tuberculosis causes negative health outcomes. The purpose of this study was to define and clarify the concept of self-stigma among patients with tuberculosis. Methods: The analysis was conducted using Walker and Avant's conceptual approach. Twenty-seven studies met the selection criteria. Results: Self-stigma in patients with tuberculosis can be defined by the following attributes: 1) self-esteem decrement; 2) fear; 3) negative emotions to oneself; 4) social withdrawal; and 5) discrimination. The antecedents identified were 1) inappropriate knowledge of tuberculosis, 2) spread of improper health information through media and social communications, 3) stereotypes and prejudices, 4) visibility due to symptoms appearing, 5) recognizing the risk of infection, and 6) low financial status. The consequences were 1) concealing the disease, 2) treatment delay, 3) poor treatment adherence, 4) poor quality of life, and 5) deterioration in or lack of social activities. Conclusion: The definition and attributes of self-stigma identified by this study can be applied to enhance the understanding of stigma in tuberculosis patients and to improve communications between healthcare providers and researchers. It can also be used to develop theories and measurements related to stigma in patients with tuberculosis.

• 한국학교보건학회지
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• 제34권1호
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• pp.42-52
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• 2021

Purpose: With the development of media, the ways adolescents can obtain information related to sexual health have diversified. Prior quantitative research on adolescents' sexual health information seeking behaviors (HISB) has limitations in grasping the details, and sexual issues of adolescents have tended to be underreported in quantitative studies. It is necessary to explore sexual HISB through an integrative review of qualitative research. The aim of the study was to analyze the literature on sexual HISB among adolescents, focusing on qualitative research. Methods: An integrative review was undertaken to explore the studies conducted between 2009 and 2018 that addressed sexual HISB such as source preferences, perceived trustworthiness, and tendency according to age and gender among adolescents. Results: Seven studies met the selection criteria and were analyzed according different sexual HISB. It was identified that adolescents preferred trustworthy sources and had a pattern of reviewing and comparing the content among diverse sources to confirm the quality of the information. Female adolescents valued privacy and confidentiality, while male adolescents would like to earn information along with their peers and perceived it as an opportunity to exchange their experiences and thoughts. Late adolescents preferred to seek sexual health information from peers and on the internet such as websites and social platforms compared to early adolescents. Conclusion: This study is significant in that it provides evidence that can be applied when developing programs for promoting sexual health in adolescents. It is suggested that programs should focus on building trustworthiness and consider differences in age and gender to improve the use of sexual health information among adolescents.

• 자원환경지질
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• 제46권4호
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• pp.313-327
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• 2013

본 연구에서는 캐나다 아사바스카 지역의 맥머레이층에 대한 3차원 지구통계 모사를 실시하였으며 모사 결과를 바탕으로 심부지열회수방법을 통한 경제적 산출 가능 지역을 가늠하고자 하였다. 비투멘의 효율적인 생산을 위하여 SAGD 공법의 최적 입지를 선정하는데 있어 스팀챔버의 충분한 수직적 연장성을 확보하는 것은 중요한 사항이다. 연구지역에서 획득한 110개의 시추공 자료에 대하여 마르코프 전이 확률 기반의 분석을 실시하였으며 이를 바탕으로 맥머레이층 구성 암상에 대한 추계론적 예측을 실시하였다. 추계론적 모사를 통하여 획득한 다중재현을 기반으로 앙상블 확률 분포도를 제작하였으며 이는 각 암상이 분포 할 수 있는 포텐셜을 보여준다. 앙상블 확률 분포도를 이용하여 투수성 퇴적층(역질 퇴적층 및 사질 퇴적층)에 대한 누적 층후도를 구성하였으며 이를 바탕으로 SAGD 공법이 적용될 수 있는 최적 입지를 선정하였다. SAGD 최적 입지 선정을 위한 추가적인 분석을 실시하기 위하여 전이율을 바탕으로 한 단일 퇴적층의 평균적인 수직 및 수평적 연장성을 산정하였다. 투수성 퇴적층의 평균적인 수직적 연장성은 대체로 투수성 퇴적층에 대한 누적층후도 분포도와 유사한 분포 양상을 보이나 일부 누적 층후가 큰 위치에서 유사하지 않은 양상을 보인다. 이는 누적 층후도와 평균적인 수직적 연장성 분포 양상이 유사하지 않은 지역은 투수성 퇴적층과 다른 암상과의 교호성은 매우 크나 투수성 퇴적층의 수직적인 연장성은 좋지 않음을 의미한다. 따라서 누적층후도 뿐 만 아니라 투수성 퇴적층의 수직적 연장성 또한 충분히 고려하였을 때 건전한 SAGD 최적 입지를 선정하는데 충분히 신뢰성 있는 결론을 도출 할 것으로 판단된다.