• 한국항해항만학회지
• /
• 제29권2호
• /
• pp.119-126
• /
• 2005

Ferry Golden Jindo collided with Ferry Princess near the No.7 light buoy of Incheon Port No.1 Passage in restricted visibility due to dense fog. The result was that Ferry Golden Jindo got a hole at the starboard midship section shell plating and Ferry Princess sustained damages at the starboard bow and 25 persons injured The aim of this paper is to investigate this collision accident, to clarify its causes, and to prevent such accident from occurring again In short, this collision resulted from Princess' high speed in restricted visibility, Golden Jindo's carelessness of watchkeeping, lack of proper safety training of crew, lack of instruction of supervisor, carelessness af PTMS Center and indifference of Korea Shipping Association, etc.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
• /
• pp.10-13
• /
• 2009

We have developed variety of LCD technologies for the out-door display, which improve out-door readability as well as reliability from external impacts. This improvement was made possible by new approach on LCD cell optical design and modification of LCD surface, which allows surrounding light to be transmitted to enhance the visibility and at the same time filtering out light, which are considered to be source of noise in terms of visibility. This technology enables users to maintain high display performance in both in-door & out-door environments moreover alternatively choosing in-door/out-door.

• 국제초고층학회논문집
• /
• 제7권2호
• /
• pp.171-183
• /
• 2018

Turner and Penn (1) from UCL have proved that Visibility Graph Analysis (VGA) can be used as a more accurate method to predict the pedestrian distribution in building spaces. However, this methodology neglects certain elements that are of special influence on pedestrian distribution in buildings, especially the entrances and exits. Based on Space Syntax, this dissertation improves on the traditional method of Visibility Graph Analysis, using three shopping centers in Shenzhen as examples, attempts to explore a new parameter - "attenuation index of pedestrians at the entrances and exits" - using relevant data of the entrances and exits of the three cases, and combines it with traditional VGA analysis through weighted calculation, in order to provide more accurate predictions of pedestrian patterns in shopping centers.

• Journal of Information Technology Applications and Management
• /
• 제28권1호
• /
• pp.95-110
• /
• 2021

This study aims to explore the Internet personal broadcasting quality factors that influence viewer satisfaction and dissatisfaction based on the motivation-hygiene theory. Specifically, the quality factors that affect viewer satisfaction of Internet personal broadcasting are derived from the perspectives of extrinsic (contents usefulness and media usability), intrinsic (emotional/cognitive/behavioral enjoyment and creator characteristics), and social motivation (visibility, subjective norm, image, sociality). The data of 200 respondents was used to analyze the relative impact of satisfaction and dissatisfaction with the Kano model, which assumes that viewer satisfaction at both functional and emotional levels varies over quality attributes. In the empirical analysis, the quality factors were classified into attractive, one-dimensional, must-be, and indifferent quality. In addition, it was found that the customer satisfaction coefficient was high in the order of uniqueness, differentiation, and visibility. On the other hand, as a result of applying the dissatisfaction coefficient, it was identified in the order of donation, content reliability, and creator responsiveness.

• Journal of information and communication convergence engineering
• /
• 제22권1호
• /
• pp.70-79
• /
• 2024

Bad weather conditions such as haze lead to a significant lack of visibility in images, which can affect the functioning and reliability of image processing systems. Accordingly, various single-image dehazing (SID) methods have recently been proposed. Existing SID methods have introduced effective visibility improvement algorithms, but they do not reflect the image's perspective, and thus have limitations that distort the sky area and nearby objects. This study proposes a new SID method that reflects the sense of space by defining the correlation between image brightness and haze. The proposed method defines the haze intensity by calculating the airlight brightness deviation and sets the weight factor of the depth map by classifying images based on the defined haze intensity into images with a large sense of space, images with high intensity, and general images. Consequently, it emphasizes the contrast of nearby images where haze is present and naturally smooths the sky region to preserve the image's perspective.

• 생물정신의학
• /
• 제9권1호
• /
• pp.50-61
• /
• 2002

본 연구에서 저자들은 정신분열병 환자들의 손톱주름 총 시도와 발생연령, 정신 병리, 진행성, 병전 기능, 신경심리 기능과의 관련성을 알아보고자 DSM-IV의 진단기준에 맞는 정신분열병 환자 40명과 대조군 38명을 대상으로 연구하여 다음과 같은 결과를 얻었다. 첫째, 정신분열병 대상군($7.2{\pm}5.3$)과 정상 대조군($3.4{\pm}4.2$)간의 총 시도 점수(PVS)에서 통계적으로 유의한 차이가 있었고(t=-3.48, p=0.001), 고도의 PVS비율도 두 군간에 통계적으로 유의한 차이가 있었다($x^2$=10.12, p=0.001). 둘째, PVS와 PANSS의 양성증상 및 종합 점수 사이에 통계적으로 유의한 상관관계가 있었고(각각 r=-0.318, p=0.023 ; r=-0.411, p=0.004), 음성 증상, 일반 정신병리, PANSS 총점과의 상관 관계는 보이지 않았다. 셋째, 고도의 PVS군은 저도의 PVS군에 비해 PANSS의 양성 증상(t=2.179, p=0.036)과 종합 점수(t=2.379, p=0.022)가 통계적으로 유의하게 낮았다. 넷째, PVS는 신경심리검사에서 지속적 수행검사 중 반응 편향 항목과 역상관관계를 보였을 뿐(r=-0.290, p=0.035), 지능, WCST, 단어 유창성 검사 항목과는 연관성이 없었다. 단지 단어 유창성 검사에서 통계적으로 유의하지는 않았지만 각 항목과 총 시도 점수 사이에 역 상관관계의 경향을 보였다. 본 연구의 소견들은 총 시도가 정신분열병의 음성 증상의 경향이 있는 환자들과 연관성이 있다는 것을 보여주었으나, 정신병리에 있어 음성증상 자체와 직접적인 연관성이 있음을 보여주지 못했다. 또한 총 시도와 수행기능에 민감한 신경심리검사 소견들과도 연관성을 찾지 못하였다. 그럼에도 불구하고 이 연구는 손톱주름 총 시도가 정상인과 비교하여 정신분열병 환자들에서 더 많이 관찰된다는 사실을 보여 주었다. 이러한 소견은 일부 정신분열병의 원인에 있어서 기질적인 영향이 있을 수 있다는 것을 암시하는 것이다. 향후 정신 생리적, 신경발달학적, 신경심리학적 소견 등과 연관시켜 연구해 본다면 정신분열병의 원인을 이해하는데 도움이 되리라 생각한다.

• CRM연구
• /
• 제3권2호
• /
• pp.1-20
• /
• 2010

본 연구는 청소년의 특성상 획일적인 유행현상으로 인한 동조소비나 독특한 집단문화의 확산 등을 볼 때 여중고생의 색조화장행동에 있어서도 그들만의 특성을 지닌 영향요소가 있을 것이라고 보고, 이들의 개인적 특성 및 사회적 준거집단에 대한 영향력을 통해 화장행동의 고도화 및 일탈행동으로 이어지는 영향을 검증하였다. 이를 위해 여자 중 고등학교 학생을 대상으로 색조화장을 하는 정도와 동료 간의 영향력을 중심으로 설문조사를 실시 하였으며, 수집된 총 297부를 최종분석에 사용하였다. 실증분석 결과, 첫째, 여중고생의 색조화장행동에 있어 사회적 자기효능감은 혁신과 또래압력 수용정도에 모두 정(+)의 영향관계를 나타냈다. 특히 사회적 자기효능감은 또래압력에 부(-) 영향관계를 예측하였으나, 정(+)의 관계를 나타내 또래집단의 특성상 자신에 대한 확신이 높다하더라도 집단에 동조하는 등의 여중고생의 심리적 특성을 나타냈다. 둘째, 여중고생의 화장에 대한 가시성은 혁신과 또래압력정도에 부(-)의 영향을 나타내 여중고생의 화장에 대한 가시성이 높은 타인의 눈에 쉽게 인식되는 정도이더라도 새로움을 추구하지 않는다는 것을 나타냈다. 또한 가시성은 또래압력을 받기보다는 오히려 또래집단에 영향력을 행사할 수 있음을 나타냈다. 셋째, 여중고생의 화장에 대한 혁신과 또래압력이 화장행동에 모두 긍정적 영향을 미치는 것으로 나타났다. 또한 화장행동에 대한 상대적 영향력은 혁신보다는 동료 압력에 의한 영향력이 더 높게 나타나 여중고생의 화장행동은 또래 압력의 영향력이 크다는 것을 시사하고 있다. 넷째, 여중고생의 화장행동의 고도화는 화장만족과 일탈행동에도 유의한 영향을 미치는 것으로 나타나 여중고생의 색조화장행동에 대한 새로운 시각이 필요함을 시사하고 있다.

• 패션비즈니스
• /
• 제18권6호
• /
• pp.174-187
• /
• 2014

This study intended to propose a guideline designed to secure safety by developing a functional color design for the color of the ordinary working clothes worn in the actual industrial settings of the machine industry in national industrial complexes in Korea. For this, a total of 6 sets of actual working clothes were produced for test, using 2-color arrangements with blue, of varying brightness and chroma for top and bottom, in relation to the visibility proven in preceding studies and evaluated in the machine industry. Blue was suggested the best proper color for machine industry by previous studies. For the material of working clothes, a total of 111 swatches were collected from the Dongdaemoon Fabric Market, and they were analyzed for color values. A total of 6 materials were used to produce working clothes for testing, which represented high brightness, medium brightness, low brightness, high chroma, medium chroma, and low chroma. Clothes were tried at the industrial settings for machine industry in a national industrial complex located in Gyeongsangnam-do and the expert satisfaction evaluation was performed based on items related with safety. As a result, higher satisfaction was shown when the brightness difference of top and bottom clothes was greater, and for chroma, relatively higher satisfaction appeared when the chroma of both top and bottom clothes was high. To secure satisfaction for both brightness and chroma, it is possible to deduce that the 2-color arrangement using the strong tone with high brightness and high chroma and the dark tone with somewhat low brightness and high chroma would be effective. Top and bottom clothes in the same color with high chroma had high visibility but had somewhat low evaluation for harmonious arrangements. This indicated that the arrangement of vivid colors for top-bottom clothes is inappropriate.

• Asian Journal of Atmospheric Environment
• /
• 제12권3호
• /
• pp.244-254
• /
• 2018

Ulaanbaatar, the capital of Mongolia, is subject to high levels of atmospheric pollution during winter, which severely threatens the health of the population. By analyzing surface meteorological data, ground-based LIDAR data, and radiosonde data collected from 2008 to 2016, we studied seasonal variations in particulate matter (PM) concentration, visibility, relative humidity, temperature inversion layer thickness, and temperature inversion intensity. PM concentrations started to exceed the 24-h average standard ($50{\mu}g/m^3$) in mid-October and peaked from December to January. Visibility showed a significant negative correlation with PM concentration. Relative humidity was within the range of 60-80% when there were high PM concentrations. Both temperature inversion layer thickness and intensity reached maxima in January and showed similar seasonal variations with respect to PM concentration. The monthly average temperature inversion intensity showed a strong positive correlation with the monthly average $PM_{2.5}$ concentration. Furthermore, the temperature inversion layer thickness exceeded 500 m in midwinter and overlaid the weak mixed layer during daytime. Radiative cooling enhanced by the basin-like terrain led to a stable urban atmosphere, which strengthened particulate air pollution.

• 한국조리학회지
• /
• 제23권3호
• /
• pp.257-270
• /
• 2017

The purpose of this study was to visualize the semantic network with big data related to food exhibition at convention center. For this, this study collected data containing 'coex food exhibition/bexco food exhibition' keywords from web pages and news on Google during one year from January 1 to December 31, 2016. Data were collected by using TEXTOM, a data collecting and processing program. From those data, degree centrality, closeness centrality, betweenness centrality and eigenvector centrality were analyzed by utilizing packaged NetDraw along with UCINET 6. The result showed that the web visibility of hospitality and destinations was high. In addition, the web visibility was also high for convention center programs, such as festival, exhibition, k-pop and event; hospitality related words, such as tourists, service, hotel, cruise, cuisine, travel. Convergence of iterated correlations showed 4 clustered named "Coex", "Bexco", "Nations" and "Hospitality". It is expected that this diagnosis on food exhibition at convention center according to changes in domestic environment by using these web information will be a foundation of baseline data useful for establishing convention marketing strategies.