• 한국정보전자통신기술학회논문지
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• 제10권3호
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• pp.213-219
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• 2017

최근, 인터넷 프로토콜 텔레비전 (IPTV) 서비스가 일반화되어 TV시청 뿐만 아니라 다양한 인터넷기반 서비스가 가능하다. 이러한 IPTV 시스템에서 STB(Set-Top Box)는 실시간 멀티미디어 콘텐츠를 송수신 할 수 있도록 지원하는 네트워크 단말 장치로써 작동한다. 이러한 IPTV 네트워크는 일반적으로 FTTH(Fiber-To-The-Home)와 같은 광섬유(Optical Fiber) 기반의 광대역기반 네트워크에 의해 제공되지만 현재 대부분의 IPTV STB는 대역폭(Bandwidth)을 공유하는 이더넷(Ethernet)과 같은 로컬 영역 네트워크(LAN)에 연결된 장치 중 하나로 연결된다. 따라서 HD급 고화질 콘텐츠 및 다양한 서비스 지원을 위한 IPTV STB을 위하서는 1Gbps와 같은 충분한 광섬유 기반의 네트워크 대역폭을 효과적으로 활용할 수 있어야 한다. 이를 위하여 본 논문에서는 광섬유 네트워크에 바로 장착할 수 있는 새로운 FC(Fiber Channel) 내장형 IPTV STB를 제안한다. 그 후 해당 제안된 FC 내장형 IPTV STB의 우수성을 확인하기 위하여 해당 FC 내장형 IPTV STB가 장착된 FC-AL(Fiber Channel-Arbitration Loop) 네트워크를 구성하여 해당 아키텍처의 성능을 검증한다. 우수한 IPTV 아키텍처의 성능을 확인하기 위하여 철저한 시뮬레이션을 통하여 평균 시작지연(Average Start-up Delay) 시간, 평균 거부비율(Average Reject Ratio) 및 동시 사용자수(Number of Concurrent Users)를 측정한다. 놀랍게도, 제안된 FC 내장형 IPTV STB가 장착된 IPTV 네트워크 아키텍처는 10 msec 미만의 우수한 평균 시작지연(Average Start-up Delay) 시간, 3 % 미만의 수용가능한(Acceptable) 평균 거부비율(Average Reject Ratio) 및 아키텍처를 확장 할 때 동시 사용자수의 선형증가(Linear Increase)를 보여준다. 이는 제안된 FC 내장형 STB가 광섬유 기반의 광대역 대역폭을 효과적으로 사용하여 전체 IPTV 네트워크 성능에 우수한 영향을 미치고 있음을 보여준다.

• 대한의용생체공학회:의공학회지
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• 제39권3호
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• pp.124-133
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• 2018

We tried to investigate the changes in cortical activities according to emotional valence states during watching video clips. We examined the neural basis of two emotional states (positive and negative) using spectral power analysis and brain functional connectivity analysis of cortical current density time-series reconstructed from high-density electroencephalograms (EEGs). Fifteen healthy participants viewed a series of thirty-two 2 min emotional video clips. Sixty-four channel EEGs were recorded. Distributed cortical sources were reconstructed using weighted minimum norm estimation. The temporal and spatial characteristics of spectral source powers showing significant differences between positive and negative emotion were examined. Also, correlations between gamma-band activities and affective valence ratings were determined. We observed the changes of cortical current density time-series according to emotional states modulated by video clip. Gamma-band activities showed significant difference between emotional states for thirty seconds at the middle and the latter half of the video clip, mainly in prefrontal area. It was also significantly anti-correlated with the self-ratings of emotional valence. In addition, the gamma-band activities in frontal and temporal areas were strongly phase-synchronized, more strongly for negative emotional states. Cortical activities in frontal and temporal areas showed high spectral power and inter-regional phase synchronization in gamma-band during negative emotional states. It is inferred that the higher amygdala activation induced by negative stimuli resulted in strong emotional effects and caused strong local and global synchronization of neural activities in gamma-band in frontal and temporal areas.

• 디지털콘텐츠학회 논문지
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• 제16권2호
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• pp.291-298
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• 2015

빠르게 발전하는 IT환경 속에서 이제 동영상 콘텐츠는 TV를 통한 일방 시청이 아니라 언제 어디서든 다양한 단말에서 볼 수 있는 VOD (Video on Demand) 형태로 발전하고 있다. 이러한 동영상 시청형태의 변화는 디지털이란 특성 때문에 동영상의 재생 속도 또한 다양하게 조절할 수 있다는 부가적인 장점을 사용자에게 제공 한다. 지루하고 따분한 동영상 콘텐츠는 빠르게 돌려보고 흥미 있는 장면은 느리게 천천히 볼 수 있는 동영상 미세배속 재생 기능은 오늘날 다양한 동영상 플레이어에서 제공되고 있다. 동영상 미세배속 재생 시 동영상 콘텐츠 내용의 정확한 이해를 위해서는 시각정보 못지않게 음성정보 청취가 중요한데 정상속도 보다 빠르거나 느린 재생 시 발생하는 음성의 왜곡을 줄이기 위한 음성미세배속 기술들이 음성처리 분야에서 꾸준히 발전되어 왔다. 본 논문에서는 이중 WSOLA와 같은 우수한 음성미세배속 알고리즘에 대해 알아보고 동영상 시청 시 이러한 기능 제공이 실제 얼마나 사용자 니즈(needs)에 부합하는 지 분석해보고자 한다. 특히, 동영상 콘텐츠를 사용자의 콘텐츠 소비 목적에 따라 종류별로 구분하여 재생 배속의 선호도를 조사하고 그 결과를 분석해 봄으로써 동영상 미세배속 기능 제공시 콘텐츠별 소비 목적에 맞게 재생 배속을 제공하는 것이 필요하다는 것을 제안하고자 한다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.4-4
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• 2008

The progress in flat panel displays over the last two decades has been astonishing. In just 20 years, the LCD-TV grew up from a 2-inch curiosity, to an industry that will sell about 120 million flat panel TV's this year, with viewing area up to 4000 times larger. That success is based on continuous innovation, especially in manufacturing processes. For the next decade to bring another doubling of the business, progress will need to continue in four major areas: Human factors, ecological impact, visual quality, and of course continued drive towards affordability. This talk will detail the technology advances that can allow this industry to meet those challenges. Human factors. Today, we adapt our lifestyle to our technology. People organize their offices, and their homes, around displays. We pass around mobile phones to share images, rather than experiencing them as a group. Billions of newspapers continue to be sold daily. Advances in flexible displays can lead to large portable displays. "New era projection" includes the handheld Pico Projectors that are already on the market, and will ultimately appear integrated in mobile phones the same way cameras do today. "Eco" impact. Today TV's are one of the top energy consumers in a U.S. home, and the fastest growing. Watching a large flat panel TV can cost twice as much as running a large refrigerator. With today's concern about energy consumption, regulations are starting to emerge worldwide to limit TV electrical use. Fortunately, good solutions exist in using light management films to eliminate bulbs, saving power without increasing cost. Going forward, LED backlights will drive another step downward. OLED displays might be the ultimate solution. Visual quality. The color of an LCD-TV is still often considered inferior to a far less expensive CRT. And almost all displays suffer from representing a three-dimensional world on a two dimensional surface. The technology to improve color is available today, and will likely move from premium sets into the mainstream as costs come down. 3D is now arriving in movie theaters worldwide, and that will drive up the demand for similar realistic images in home theaters. And the technology is emerging today for 3D representation to move beyond specialized applications into everyday use, on screens large and small. Affordability. The world takes cost-down miracles for granted in consumer electronics. Each of these other advances will be balanced with a drive for affordability, especially as the market grows in emerging countries. The other three challenges must be met without increasing cost. Putting this all together, the next few years will emphasize "eco friendly" designs, and enhanced images such as 3D. By 2013 we will start to see serious penetration by emissive technologies (OLED, high efficiency plasma, or other), with the "ultimate display" likely not in the market for a decade. Lots of opportunities for innovation remain ahead of us.

• 대한영양사협회학술지
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• 제4권2호
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• pp.200-211
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• 1998

Most of college women are interested in their appearances, and those whose body weights are normal or even underweight try to lose weight. Many methods for weight control diets practiced by college women are unsound and irrational so that some side-effects should be watched out. The present study was aimed to investigate methods of diets, food habits, behaviors, and side effects of weight control and to suggest sound weight loss schemes for college women. The subjects were 353 college women living in Taegu and Kyung Buk area, comprising 178 women who have tried weight control diets and 175 women who have not tried diets. The items included in questionnaires were food habits, food behavoirs, food frequency, physical activity status, 24-hour daily activity record, height, weight, etc., and the survey was conducted in September 1997. There was no difference in body mass index between college women who have tried diets(20.1$\pm$2.26) and women who have not tried diets(19.3$\pm$1.58), and 24.2% of those who have tried diets had body mass index under 19. The leading reason for diets was to make better fitting for costumes(67%). While women who have tried diets also tried to exercise more, they tended to overeat than women who have not tried diets. Mean of food habit scores(9.33 vs 9.32) which corresponded to "poor" habit and food frequencies were not different with or without experiences of diets. This indicated that diets were not related to actual changes of food habits and food intakes. Diet methods used frequently by college women were relying on special diet foods(25.4%), fasting(24.9%) and exercise(22.6%). Trying both exercise and diet was practiced by only 5.1% of the subjects who have tried diets. The duration time of diets was mostly in the range of 1 week to 1 month, and the longer diet period was, the more weight loss was. The frequent side effects due to diets were anemia(41.8%) and enervation(23.7%). Activity coefficients were lower in those who have tried diets(1.38$\pm$0.13) than those who have not tried diets(1.41$\pm$0.19). Women who have tried diets spent more time on reading newspapers and magazines and on watching TV. This study indicates that college women who have tried diets practiced irrational diets for weight reduction and experienced undesirable side-effects. Therefore scientific and systematic weight reduction programs accompanying balanced diets and proper exercise with behavior changes should be developed.

• 정보교육학회논문지
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• 제11권4호
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• pp.471-482
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• 2007

최근 UCC(User-created content)는 연예, 스포츠 등의 분야에서 많이 생성되어 공유되고 있지만 그 생명주기(life cycle)는 매우 짧고 이를 교육이나 학습에 활용하는 경우는 거의 드문 상황이다. 따라서 본 연구에서는 UCC 중에서 특히 창작 동영상을 활용하여 원격 교육에 적용하는 방법을 제안한다. 교사는 자신이 제작한 동영상을 원격 교육 시스템에 탑재하여 학생들로 하여금 자기 주도적 학습을 할 수 있도록 지원하며 학생들은 직접 만든 동영상으로 교사에게 지속적인 피드백을 받고 최종 평가를 받는다. 본 연구에서는 모형으로 원격 교육 시스템을 구현하고 초등학교 특기 계발교육 중 단소 실기 과목을 선정하여 원격 교육을 수행하였다. 원격 교육 후의 설문에서 학생들은 우선 단소 실기 능력이 향상되고 학습 및 평가 방법에 만족하는 것으로 나타났으며 단소 실기 능력 향상 이외에도 카메라/캠코더 조작기술 및 컴퓨터 활용 능력이 향상되었다고 응답하였다. 또한 동영상을 친구들 혹은 부모님과 함께 제작하고 많은 시간을 함께 보내면서 대부분의 학생들이 이전보다 관계가 더 좋아진 것으로 나타났다.

• 대한지역사회영양학회지
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• 제20권2호
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• pp.96-108
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• 2015

Objectives: This study was performed to investigate health-related factors, nutrition knowledge and food habits of college students in Wonju. Methods: A total of 442 (male: 221, female: 221) college students were recruited and a questionnaire-based survey was conducted. The general characteristics, health-related factors, nutrition knowledge, and food habits were investigated and data were analyzed using SPSS WIN (ver 21.0). Results: The body mass index ($22.9kg/m^2$ vs $20.9kg/m^2$, p < 0.001) was significantly higher in the males. The ratio of weight (p < 0.001) was significantly different between males and females. Health-related factor scores 'Exercise (p < 0.001)', 'Number of exercise (p < 0.001)', 'Times of exercise (p < 0.01)', 'Concerns about health (p < 0.05)', 'Health condition (p < 0.001)' were significantly higher in the males. 'Type of exercise (p < 0.001)' was significantly different between males and females. Score on 'Watching TV & computer games (p < 0.01)' was significantly higher in the females. Smoking (p < 0.001) was significantly higher in the males. Type of beverages consumed (p < 0.001) was significantly different between males and females. Nutrition knowledge score (11.8 vs 12.9, p < 0.05) was significantly higher in the females. Scores on 'Iron deficiency is leading to anemia (p < 0.01)' and 'carbonated beverages, such as coke, have no calorie (p< 0.05)' were significantly higher in the females. Food habits score (56.4 vs 53.7, p < 0.01) was significantly higher in the males. Scores on 'I have three meals a day (p < 0.01)', 'I have breakfast regularly (p < 0.001)', 'I have meals on time (p < 0.001)', 'I do exercise every day (p < 0.001)', 'I don't eat junk food often (p < 0.05)', 'I don't eat sweet food often (p < 0.05)', and 'I don't eat out often (p < 0.05)' were significantly higher in the males. Conclusions: Nutritional education for college students is needed in order to improve their health and nutritional education program should be tailored to meet various needs of these students.

• 한국응용과학기술학회지
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• 제37권3호
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• pp.526-542
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• 2020

본 연구는 PGA 정규 투어 남자프로골프대회에 자원봉사자로 참석한 대학생들의 참여 만족과 불만족에 대한 귀납적 분석 방법을 통하여 내용을 분석 후 결과를 도출하였다. 본 연구의 대상자는 2019년 "2019 더 CJ컵@나인브릿지 골프대회에 자원봉사자로 참여한 대학생을 대상으로 실시하였으며, 300명의 응답자 중 설문내용이 충실하지 못하다고 판단되는 76부를 제외한 224부를 내용분석 하였다. 먼저 참여 만족의 전체 세부영역인 408개의 원자료를 중심으로 2차 귀납적 범주분석을 실시하여 전체 10개의 세부영역과 5개의 일반영역으로 범주화하였다. 구체적으로 살펴보면, 첫째, "골프대회 경험만족"은 골프대회, 골프정보, 골프장으로 구분되었다. 둘째, "선수만족"은 직접관람, 유명선수로 구분되었으며, 셋째, "환경만족"은 장소만족, 시설만족으로 구분되었고, 넷째, "참여만족"은 봉사만족, 유능감 만족으로 구분되었다. 마지막으로 "대인관계 만족"은 세부영역과 동일하게 적용하여 구분하였다. 참여 불만족의 경우 전체 세부영역인 369개의 원자료를 중심으로 2차 귀납적 범주분석을 실시하여 전체 10개의 세부영역과 3개의 일반영역으로 범주화하였다. 구체적으로 살펴보면, 첫째, "대회운영 시스템 불만족"은 세부적으로 업무 체계 불만, 운영 체계 불만, 관리 체계 불만, 전달 체계 불만으로 구분되었다. 둘째, "자원봉사 처우 불만족"은 자원봉사 처우 불만, 업무과다 불만, 근무시간 불만으로 구분되었으며, 셋째, "자원봉사 복지 불만족"은 식음료 불만, 복장불만, 부대시설 불만으로 구분되었다.

• 수산경영론집
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• 제49권1호
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• pp.51-66
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• 2018

During the Joseon period, the East Sea would be called 'Gyeonghae' due to a large number of whales. In the Republic of Korea, whaling was locally permitted in 1946. However, the number drastically dropped because the hunting of the marine mammal had already been carried out in Russia, the U.S. and Japan since 1800s. Before a moratorium on commercial whaling was introduced by the International Whaling Commission(IWC) in 1986, whale populations in the East Sea had plunged. Furthermore, Korean gray whales and fin whales weren't found anymore in that area. With the suspension, whale hunting was banned in Korea as well. Even so, accidentally caught whales have been allowed to be distributed on the market with respect for local food culture. With the establishment of Whale Museum and hosting of the 57th Annual Meeting of the International Whaling Commission(IWC) at Jangsaengpo in 2005, whale tourism was facilitated in earnest. This whale tourism has been operated by Nam-gu Office and Nam-gu City Management Corporation in Ulsan. However, the popularity of whale tourism has increased a demand for whale meat. At the same time, there has been concern over decrease in whale populations because of illegal whaling. In addition, a conflict between the use and protection of whales has caused confusion in tourism identity. Actually, there is a serious doubt on the sustainability of whale tourism due to the decade-long deficit and excessive investments. This study attempts to define a concept of whale tourism and propose a future direction for the sustainable growth and development of Korea's whale tourism industry after developing such comprehensive assessment indicators as a basic research for the introduction of sustainable whale tourism. To achieve the aim of this study, AHP(Analytic Hierarchy Process) was chosen as a main research tool and the factors were ranked by a comprehensive analysis of principal factors and detail factors. The current study showed the following results. First, ecological environment(0.430) was indicated the most important factor of whale tourism assessment indicators. Moreover, Population(0.1302), Action for Cetacean protection(0.1031), Governance(0.0898) were critical factors. On the other hand, Accommodations(0.0085), Whale meat(0.0088) were unimportant factors than others.

• 한국빅데이터학회지
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• 제5권1호
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• pp.29-39
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• 2020

목적 사회 전반적으로 퍼진 개인의 취향에 대해 존중하는 분위기는 소비 트렌드를 바꾸었다. 그에 따라 여행 산업에서도 소비자 개인의 취향을 반영하는 맞춤형 여행이 새로운 트렌드로 주목받고 있다. 특히 여행 산업 분야 중 하나인 '영화 관광'에 대한 관심이 커지고 있음에 주목하였다. 영화를 시청하며 발생하는 개인의 여행 동기를 맞춤형 여행 제안으로 충족시키고자 하며, 이는 '영화 관광 산업'의 지속적 발전의 촉진제가 될 것으로 기대한다. 설계/방법론/접근 본 연구에서는 시청자가 실제로 방문하고 싶은 영화 속 촬영지 정보를 'OCR'을 통해 추출, 제안하는 방법론을 구현하였다. 먼저, 실시간 이미지 프로세싱 라이브러리인 'OpenCV'를 활용하여 사용자가 선택한 영화 속 장면을 추출 받는다. 또한, 딥러닝 기반의 텍스트 영역 탐지모델인 'EAST 모델'을 활용하여 해당 장면 이미지에서 문자가 위치한 곳을 탐지하여 검출한다. 검출한 이미지는 'OpenCV 내장 함수'를 사용해 전처리하여 인식의 정확도를 높인다. 마지막으로 광학 문자 인식 엔진인 'Tesseract'를 사용하여 이미지 속 문자를 인식 가능한 텍스트로 변환한 후, 'Google Map API'를 통해 실제 위치 정보를 반환한다. 의의 본 연구는 기존의 영화 관광에서 나아가, 4차 산업 기술을 활용한 개인 맞춤 관광 콘텐츠를 제공해준다는 점에서 큰 의의가 있다. 이는 앞으로 여행사와 함께 영화 관광 패키지 상품 개발에 활용될 수 있다. 또한 국내에서 해외로의 유입뿐만 아니라, 해외에서 국내로의 유입에 활용될 가능성 역시 내포하고 있다.