• Title/Summary/Keyword: Visual analysis

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Steering System Design of Commercial Vehicle for Improving Pulling Phenomenon During Braking (상용차의 제동시 쏠림 개선을 위한 조향 연결점 설계)

  • Lee, Chang Hun;Lee, Dong Wook;Lee, Yong Su;Sohn, Jeong Hyun;Kim, Kwang Suk;Yoo, Wan Suk
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.37 no.3
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    • pp.379-385
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    • 2013
  • The tires, suspension type, and steering system can all cause pulling during braking. Among these, a drag link steering system and leaf-type suspension system are significant causes of vehicle pulling. In this study, the pulling problem is analyzed using the vehicle analysis program "ADAMS/CAR." The drag link and leaf spring behavior is analyzed to find the key reason for pulling. After this, the optimization program "Visual DOC" is used with "ADAMS/CAR" to find a steering link connection point to reduce pulling. After conducting this simulation, K&C (kinematic & compliance) test simulation with a modified connection point is conducted to determine whether the vehicle performance improves. Through a full braking simulation, it is verified that the pulling distance is reduced at braking.

The Study on the Visual illusions and the Image of the Clothing by the Computer Simulation through the combination of the collars and the sleeves (Computer Simulation을 이용한 의복의 착시효과와 이미지 연구 Collar와 Sleeve의 조합을 중심으로-)

  • Choi, Jung;Lee, Kyoung-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.20 no.5
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    • pp.915-929
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    • 1996
  • The purpose of this study is to investigate the visual illusions and image of the combinated collars and sleeves which are combinated by the computer simulation. The detail object of this study as follows; 1) to know the visual illusions of the clothing as the collar and sleeves are combinated 2) to constract the clothing image using sementic differential scales 3) to know the differet image of the clothing as the collars and sleeves are combinted 4) to know the interaction effect of the collars and sleeves of the clothing The detail method of this study is as follows; In the first experiment, there are two groups; the first 8 groups are the combination of the same collar and the different sleeves. The second 8 groups are the combination of the same sleeve and the different collars. The second experiment has done for the 32 clothings which are the combination of the 8 collars and 4 sleeves. For the 14 clothing the image has tested by 13 semantic differential bi- polar scale. The subjects were 50 female students majoring in clothing and textile. The data analyzed by Kendall cofficient of concodance, Factor analysis, Anova and scheffe's test. Briefly the image of the clothing is much influenced by the varing of the collar than that of the sleeve. Thus, we also can conclude that the recognition of the clothing are much more dependent on the collar than sleeve.

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A study on the visual expression of Korean style character design through the visual analysis on traditional magic pattern (전통주술문양의 시각적 분석을 통한 한국적 캐릭터의 시각적 표현에 관한 연구)

  • 신승택;이현주
    • Archives of design research
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    • v.14 no.3
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    • pp.135-144
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    • 2001
  • What find the motive of new design from Korean traditional cultural inheritance and symbolize it visually is to create a new design of Korean style into the harmony of shape and aesthetics by harmonizing past design and modern one, to discover the value of the future, and to make a new traditional culture. This study is to find the motive of design from Korean traditional pattern and character of the twelve horary signs, to develop unique Korean style character by studying character to cause novel and refined sense and interest through the mix of traditional image and modern one, and to propose a plan to apply in various and practice the Korean style character to modern design. In addition, the purpose of this study is to discover the identity of Korean style from foreign culture by presenting identity and originality with our peculiar cultural elements as well as to develop the visual effect and character of traditional pattern, and to have national competitiveness with Korean style design from the world market of the future.

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A Visual Image Perception of Clothing Colors, Color Combinations of Borean Traditional Dress for Woman(Part I) (복식색과 색조합의 이미지 지각(제1보) -여자 저고리, 치마를 중심으로 한 준실험 연구 -)

  • 이혜숙;김재숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.22 no.5
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    • pp.597-606
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    • 1998
  • The purposes of the study were 1) to evaluate the visual image of colored Korean traditional dress for woman 2) to analyze the colors and, color combinations effect on the image perception using gestalt theory. The research method was a quasi-experimental with a between subjects design. The experimental materials developed for the study were a set of stimuli and a response scale. The stimuli was consisted of 17 drawings of females wearing Korean tradinational dress, by using CAD simulation. A response scale consisted of semantic differential scales. The subjects were 1138 undergraduate students of Taejon city, Chungnam province and Chungbuk province. Their responses to the semantic differential scales were analyzed using factor analysis, one-way ANOVA, Duncan's multiple range test, 1-test. Results were as follows; 1) The image of the stimulus was consisted of the 4 different dimensions.(sociability, evaluation, visibility, attractiveness) 2) Clothing colors had significant effects on image perception of the evaluation dimension, visibility dimension and attractiveness dimension in the mono-color set. The blue showed the most positive image on the evaluation dimension, and the yellow and the gray showed negative image on the same dimension. The yellow showed the most salient image and the gray showed the least salient image on the visibility dimension. The red showed the most attractive image and the green showed the least attractive image on the attractiveness dimension. 3) In hi-color set stimulus, the perceived image was influenced by color combinations. The yellow blouse-the red skirt set showed the most sociable image on the sociability dimension. The blue blouse-the green skirt set showed the most positive image on the evaluation dimension. The yellow blouse-the red skirt set showed the most salient image and the blue blouse-the green skirt set showed the least salient image on the visibility dimension. And the red blouse-the yellow skirt set showed the most attractive image on the attractiveness dimension. On conclusion the visual image of Korean traditional dress wearer was affected by dress colors and color combinations.

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Construction of Disability Pride that People Having Acquired Visual Impairment Shown in the Japanese TV Drama "Challenged" -From the Viewpoint of Integrating Disability Studies- (융합적 장애학의 시각을 통해 본 중도 시각장애인의 장애 자부심 구축 -일본 TV드라마 "챌린지드"를 중심으로-)

  • Cho, Won-il
    • Journal of Digital Convergence
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    • v.14 no.1
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    • pp.479-489
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    • 2016
  • This study examines how disability pride of people having acquired visual impairment can be constructed. The theme is explored with the Japanese TV drama "Challenged". The paradigms regarding construction of disability pride and acceptance of disability are fundamentally different. In this context it can be said that a criticism of disability acceptance theory has something with a criticism of medical model of disability. It is main character Hanawa and chairman of teachers, and principal who were noticeable specifically at the point of forming disability pride, and these characters show a common feature that social idealism is embodied in their awareness. Other characters of the drama show a change of their consciousness to social idealism. As a conclusion this study suggests importances of humanistic and social scientific analysis as well as of educational effects achieved by means of drama.

A Recognition Framework for Facial Expression by Expression HMM and Posterior Probability (표정 HMM과 사후 확률을 이용한 얼굴 표정 인식 프레임워크)

  • Kim, Jin-Ok
    • Journal of KIISE:Computing Practices and Letters
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    • v.11 no.3
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    • pp.284-291
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    • 2005
  • I propose a framework for detecting, recognizing and classifying facial features based on learned expression patterns. The framework recognizes facial expressions by using PCA and expression HMM(EHMM) which is Hidden Markov Model (HMM) approach to represent the spatial information and the temporal dynamics of the time varying visual expression patterns. Because the low level spatial feature extraction is fused with the temporal analysis, a unified spatio-temporal approach of HMM to common detection, tracking and classification problems is effective. The proposed recognition framework is accomplished by applying posterior probability between current visual observations and previous visual evidences. Consequently, the framework shows accurate and robust results of recognition on as well simple expressions as basic 6 facial feature patterns. The method allows us to perform a set of important tasks such as facial-expression recognition, HCI and key-frame extraction.

Gaze Effects on Spatial and Kinematic Characteristics in Pointing to a Remembered Target

  • Ryu, Young-Uk;Kim, Won-Dae;Kim, Hyeong-Dong
    • Physical Therapy Korea
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    • v.13 no.4
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    • pp.23-29
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    • 2006
  • The purpose of the present study was to examine gaze effects on spatial and kinematic characteristics during a pointing task. Subjects were asked to watch and point to an aimed target (2 mm in diameter) displayed on a vertically mounted board. Four gaze conditions were developed as combinations of "seeing-aiming" in terms of the eye movements: Focal-Focal (F-F), Focal-Fixing (F-X), Fixing-Focal (X-F), and Fixing-Fixing (X-X). Both the home target and an aimed target were presented for 1 second and then were disappeared in F-F and X-F. In X-F and X-X, only an aimed target disappeared after 1 second. Subjects were asked to point (with index finger tip) to an aimed target accurately as soon as the aimed target was removed. A significant main effect of gaze was found (p<.01) for normalized movement time. Peripheral retina targets had significantly larger absolute error compared to central retina targets on the x (medio-lateral) and z (superior-inferior) axes (p<.01). A significant undershooting to peripheral retina targets on the x axis was found (p<.01). F-F and X-F had larger peak velocities compared to F-X and X-X (p<.01). F-F and X-F were characterized by more time spent in the deceleration phase compared to F-X and X-X (p<.01). The present study demonstrates that central vision utilizes a form of on-line visual processing to reach to an object, and thus increases spatial accuracy. However, peripheral vision utilizes a relatively off-line visual processing with a dependency on proprioceptive information.

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Effect of Tactile Feedback on Trunk Posture and EMG Activity in People With Postural Kyphosis During VDT Work

  • Park, Joo-hee;Kang, Sun-young;Cynn, Heon-seock;Jeon, Hye-seon
    • Physical Therapy Korea
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    • v.23 no.3
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    • pp.48-56
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    • 2016
  • Background: Recently, there has been an emphasis on the use of interventions with biofeedback information for the maintenance or correction of posture. Objects: This study assessed the change of trunk posture and trunk muscle activation when people exhibiting postural kyphosis performed visual display terminal work with or without a contact feedback device (CFD). Methods: Eighteen right-handed individuals were recruited. Thoracic angle and right thoracic erector spinae (TES) muscle amplitude were analyzed. There were two sessions in these experiments. The control session involved 16 minutes of typing without a CFD, and the CFD session involved 16 minutes of typing with a CFD. The visual analog scale score was analyzed with a paired t-test, and the kinematic and electromyography data were analyzed through two-way repeated analysis of variance. Results: The paired t-tests revealed that subjects had significantly less pain after the CFD sessions than after the control sessions (p<.05). Significant main effects by session and by time were observed in the thoracic kyphosis angle (p<.05). There was a significant session${\times}$time interaction for TES amplitude (p<.05), along with significant main effects by session and by time (p<.05). Conclusion: The CFD caused people with postural kyphosis to straighten and to activate their TES continuously, even though they were habituated to bend their bodies forward. Therefore, the CFD was a beneficial treatment tool.

Factors Influencing the Alcohol Consumption Behavior of Adolescents (청소년 음주행위 영향요인)

  • Ann, Jung-Sun;Kim, Hee-Kyung;Choi, Eun-Sook
    • Research in Community and Public Health Nursing
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    • v.14 no.1
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    • pp.55-65
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    • 2003
  • Purpose: The purpose was to investigate the factors influencing the alcohol consumption behavior of adolescents to provide basic data for a nursing intervention program to improve health management and prohibit alcohol consumption. Method: The subjects were 306 university students, living in K city in Chungnam province from April 1 to 20th, 2002. The instruments used were the alcohol consumption behavior scale, that is the drinking intensity score, and developed by Shin(1998)'s scale of drinking problem, refusal self-efficacy scale by Aas et. al.(1995), alcohol expectancy by Goldman et. al. (1989), TPQ scale by Cloninger(1991), depression scale by Zung(1974), family cohesion scale by Olson et. al. (1983). The data were analyzed using descriptive statistics, Pearson correlation coefficient, t-test, ANOVA, and stepwise multiple regression by using SPSS & SAS program. Results: The multiple regression analysis revealed that the most powerful predictor of alcohol consumption behavior was the influence of friends (drinking everyday) (17.0%). A combination of alcohol expectancy (8.0%), influence of friends (4.0%), father's influence (2.0%), depression(2.0%), refusal self-efficacy (1.0%), personality of harm avoidance(1.0%), and monthly pocket money (2.0%) accounted for 38.6% of the variance in alcohol consumption behavior. Conclusion: From the results, we recommend to use the database that develops nursing intervention program for decreasing the alcohol consumption behavior including the influencing factors in university students.

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The Technical Suggestion for Implementing Animated PSD Ads : Focused on Seoul Metro Line2 (동적 PSD광고 구현을 위한 기술적 제안 : 수도권 지하철 2호선을 중심으로)

  • Kim, Kyoung-Joo;Kim, Suk-Rae
    • Journal of Digital Convergence
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    • v.16 no.7
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    • pp.381-391
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    • 2018
  • The purpose of this research is to propose a new method of PSD(Platform Screen Door) ads using animated image for efficiency, based on the theoretical background that moving objects have a stronger visual attractiveness effect than static objects. For this, we analyze the relationship between the screen door and the train, then derive the positional and visual elements which help to create efficient animated images. Based on this analysis, we made an example and applied into 3D program to confirm the implementation process of the animated PSD ads. As the result, the research shows that it is possible to produce a new type of PSD ads that can show dynamic visual effects and can give diversity to the PSD advertising media through the combination of the images using time difference.