• 대한감각통합치료학회지
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• 제18권3호
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• pp.1-13
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• 2020

목적 : 본 연구는 주의력결핍 과잉행동장애(Attention Deficit Hyperactivity Disorder; ADHD) 아동과 일반 아동을 대상으로 감각처리능력과 시지각 기술을 비교하고자 하였다. 연구방법 : 연구대상은 지역적 환경이 동일한 아동으로 선정하였다. 소아정신과에서 ADHD로 진단받은 아동 25명과 초등학교 1, 2학년의 일반 아동 51명을 대상으로 감각처리능력과 시지각 기술을 평가하였다. 아동의 감각처리능력을 측정하기 위해 감각프로파일(Sensory Profile; SP)을 사용하였고 시지각 기술을 측정하기 위해 한국판 시지각 발달검사(Korean Developmental Test of Visual Perception-2; K-DTVP-2)를 사용하였다. 두 군 간의 감각처리능력과 시지각 기술의 차이는 독립표본 t 검정을 사용하여 분석하였다. 결과 : ADHD 아동과 일반 아동의 감각프로파일(SP)의 모든 하위 영역에서 통계적으로 유의한 차이를 보였다. 감각요인을 비교한 결과 감각예민을 제외한 8가지 요인에서 통계적으로 유의한 차이를 보였다. K-DTVP-2의 모든 시지각 지수에서 유의한 차이를 보였다. K-DTVP-2의 하위 항목 표준점수를 비교한 결과 공간위치(p=.031), 도형-배경(p=.001), 시각 통합(p=.005), 눈-손 협응(p=.000), 따라 그리기(p=.044), 공간관계(p=.006)에서 통계적으로 유의한 차이를 보였다. 결론 : 본 연구는 임상에서 ADHD 아동의 행동의 특성을 이해하는데 감각처리능력과 시지각 기술이 중요하다는 근거가 되며 ADHD 아동의 평가, 교육 및 연구에 도움을 제공할 수 있다는 점에서 의미가 있다.

• 근관절건강학회지
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• 제20권3호
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• pp.225-234
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• 2013

Purpose: This purpose of study was to investigate the relationships among functional state, self-efficacy, and life satisfaction in the elderly with decreased visual acuity. Methods: The subjects were 162 elderly people from the G university hospital. Functional state was measured by Late-Life Function and Disability Instrument (LLFDI) and Minimum Data Set-Home Care version 2.0 (MDS HC 2.0). Self-efficacy and Life satisfaction were measured by the tool of Rho & Lee (2011) and Yoon (2007). Data were analyzed using t-test, ANOVA, Pearson's Correlation Coefficient, and logistic regression. Results: The daily life function was significantly associated with self-efficacy and vision decrease. The regression model with these two variables explained 35.6% of the variance of daily life function. IADL was significantly associated with vision decrease, age, gender, and self-efficacy. The regression model with the three variables explained 52.9% of the variance of IADL. Life satisfaction is significantly associated with self-efficacy, daily life function, vision decrease and IADL. The last regression model with the four variables explained 51.8% of the variance of life satisfaction. Conclusion: The levels of functional state, self-efficacy and life satisfaction in the elderly with decreased visual acuity were low. Self-efficacy was an important factor that influences on the functional state and life satisfaction. Therefore, nursing interventions that can enhance the self-efficacy are required in order to increase the functional state and life satisfaction in the elderly with decreased visual acuity.

• 대한기계학회논문집A
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• 제21권1호
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• pp.1-11
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• 1997

Austomated visual inspection(AVI) capability has become an important key component in the automated manufacturing system. In such a visual inspection system an intensity(or color) image of a scene is quickly affected by optical property of objects, condition and roughness of surface, lens and filters, image sensor property and lighting system. In particular, the lighting system disign is the most important factor, since it affects overall performance of the visual system. For fast and cheap automated visual inspection system it is important to obtain the good image quality which results from careful attention to the design of the lighting system. In this paper, the lighting subsystem of AVI system is analysed for the inspection of printed circuit board(PCB) patterns. The spectral reflectance of materials, which are composed of PCB, is measured for choosing the light source. The reflection property is theoretically obtained by a reflection model and also obtained by experiments which measure intensity with varying the viewing direction of image sensor and the lighting direction of illuminator. The illumination uniformity of a ring-type illuminator. The lighting system is designed based upon the experimental results and theoretial analysis.

• 한국의상디자인학회지
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• 제17권1호
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• pp.141-154
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• 2015

The purpose of this study is to look for a development plan for strategic brand logo by a means of scrutinizing general characteristics and trend in the visual properties of outdoor logo brands. In this study, data research and analysis were conducted over the 68 outdoor brands in circulation in the domestic market based on the information on the website of each brand in order to examine the visual characteristics of an outdoor brand logo. For this, it was performed to examine the desired brand concept of each brand and to analyze the visual characteristics of typeface, color, and type of logo. The results of this research are the followings: First, it was found that the most popular typeface in outdoor brand logos is a capitalized Gothic type. It seems that the logo type is designed to symbolize power, toughness, and masculinity and to express the concept of sportswear brand. Second, when it comes to color, black color tone appeared most frequently, and also reddish colors among chromatic colors were prevailing over others like green, blue, or yellow. It is believed that reddish colors were used to express passion, power, youthfulness, and energy; black color tone for tough, masculine power. Third, the logo symbol of outdoor brands mostly contains mountain, the heads of powerful animals, spherical shape/abstract image that embodies outdoor sports activities. It was analyzed that these resulting symbols were chosen to convey the images of nature, conquest, challenge, future, and passion that are the brand concept of most outdoor brands. Today, in our country, the logo of an outdoor brand is the important factor that symbolizes the brand concept, function, or characteristics. Therefore, the necessity of constant follow-up researches is required to devise the way of designing the brand logo that can build brand power and enhance brand image.

• 감성과학
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• 제11권2호
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• pp.227-234
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• 2008

시각과 청각으로 표현된 디지털 콘텐츠가 감각표현을 확장하려는 연구가 활발하다. 최근에는 촉각 표현이 가능한 다양한 촉각 표현 시스템이 개발하여 촉감을 표현하는 디지털 콘텐츠 개발하고 있다. 하드웨어에 의한 촉감각 표현시 다른 감각과의 동기화가 중요한 표현 요소로 대두되고 있다. 본 연구는 햅틱(haptic)표현이 다른 감각에 비해 표현 지연 발생할 경우 실감도에 미치는 영향에 관한 것이다. 시각 및 햅틱 지연 시간을 0.5, 1.0, 2.0, 4.0(초)로 설정하여 각 지연에 대한 실감도 평가를 실시하여 선형 회귀 분석하였다. 촉각 지연 보다 시각 지연에서 실감도와 상관성을 보였으며 지연 시간이 길어질수록 실감도가 떨어지는 것을 볼 수 있었다. 그러므로 사용자는 촉감 표현에 대한 지연이 시각 지연 보다 관대한 것으로 사료된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제3권4호
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• pp.344-365
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• 2009

The performance of a tracking system is greatly increased if multiple types of sensors are combined to achieve the objective of the tracking instead of relying on single type of sensor. To conduct the multi-modal tracking, we have previously developed a multi-modal sensor-based tracking model where acoustic sensors mainly track the objects and visual sensors compensate the tracking errors [1]. In this paper, we find a network synchronization problem appearing in the developed tracking system. The problem is caused by the different location and traffic characteristics of multi-modal sensors and non-synchronized arrival of the captured sensor data at a processing server. To effectively deliver the sensor data, we propose a time-based packet aggregation algorithm where the acoustic sensor data are aggregated based on the sampling time and sent to the server. The delivered acoustic sensor data is then compensated by visual images to correct the tracking errors and such a compensation process improves the tracking accuracy in ideal case. However, in real situations, the tracking improvement from visual compensation can be severely degraded due to the aforementioned network synchronization problem, the impact of which is analyzed by simulations in this paper. To resolve the network synchronization problem, we differentiate the service level of sensor traffic based on Weight Round Robin (WRR) scheduling at the routers. The weighting factor allocated to each queue is calculated by a proposed Delay-based Weight Allocation (DWA) algorithm. From the simulations, we show the traffic differentiation model can mitigate the non-synchronization of sensor data. Finally, we analyze expected traffic behaviors of the tracking system in terms of acoustic sampling interval and visual image size.

• 한국의상디자인학회지
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• 제18권1호
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• pp.121-133
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• 2016

The purpose of this study is to recognize the differences of visual evaluation by variations in pattern and silhouette of the block dresses. The stimuli are 9 samples: 3 variations of the silhouette and 3 variations of the size of pattern. The data has been obtained from 55 fashion students and has been analyzed by using Factor Analysis, Anova, Scheffe's Test and the MCA method. The results of this study are as follows; 1) The visual evaluation by pattern and silhouette of block dresses are composed of 4 factors: lovable personality, physical characteristics, boldness, and simplicity. 2) Block dresses were evaluated to display the figure more efficiently, such as looking slimmer or taller, in the order of 2nd stage, 1st stage, and 3rd stage in every silhouette. As the patterns became bigger, straight silhouette dresses were judged to have bolder, more dignified images. 3) Block dresses were evaluated to have cute and lively images in order of hourglass silhouette, straight silhouette, and fitted silhouette in every pattern. They were evaluated to appear slimmer and taller in order of hourglass silhouette, fitted silhouette, and straight silhouette in every pattern. 1st stage and 2nd stage dresses were evaluated to have a bolder, more dignified image in order of fitted silhouette, hourglass silhouette, and straight silhouette. 4) The pattern and the silhouette of the block dresses interacted with boldness. These were the boldest, most dignified image in the fitted silhouette and 1st stage, while they were not judged so in the case of the straight silhouette and 1st stage. 5) According to the MCA regarding lovable personality and physical characteristics, the silhouette affected the visual image of the block dresses more than the pattern did. According to the MCA on simplicity, the pattern affected the visual image of the block dresses more than the silhouette.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1918-1920
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• 2005

The color and structure of urban constructions is a factor of urban landscape and shows their characteristics. Hence the modern buildings with their materials and external appearance makes up the urban image. But still yet, it was not easy to evaluate the value of visual landscape of buildings with objective measuring method. Most of all, it depends on the subjective estimation of a few talented or high educated experts with a sense of beauty. In relation to this kind of problems, it was tried here in this study to analyse the human response of brain wave pattern (EEG) with use of SD method, while the tested persons watched the urban landscape constructed in a visual reality. The tested persons were 10 adult males and females with no color blindness and intact cognitive function. Light source with color filter was used for color environment in chamber room. The signal of EEG is analysed digitally and grouped into the $\alpha$ and $\beta$ waves. The result showed that relative power of $\alpha$ wave ratio increased in natural landscape scenary clearly. From these results it was possible to evaluate the human response, which was affected by urban color and structure stimulation and it might be useful as an indicator of visual cognition amenity toward the design of urban construction environment.

• 영재교육연구
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• 제13권2호
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• pp.23-41
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• 2003

본 연구는 학동기 미술영재성의 동기요인 검사도구를 개발하는데 목적이 있다. 연구는 문헌연구를 통해 미술영재성의 특성을 추출하여 유목화한 후 측정변인으로 규정하였으며, 각각의 측정변인별로 문항을 개발하여 예비검사 과정을 통하여 최종적으로 27문항으로 구성된 검사도구를 제작하였다. 담임교사의 지명을 받은 초등학교 1학년에서 6학년 679명을 연구대상으로 본 검사를 실시하였다. 검사도구의 신뢰도와 타당도를 경험적으로 검증한 결과 .93의 높은 신뢰도를 확보하였다. 한편 초등교육학 전문가, 영재교육 전문가, 미술전문가, 교육통계전문가 4인의 내용타당도를 확보하였으며, 주성분 요인 추출방법으로 요인을 추출하여 Varimax방법으로 직각회전을 한 구인타당도 검증에서는 흥미/태도/취미 요인, 인내/열중 요인, 호기심/상상력/민감성 요인, 심미적 요인이 추출되었다. 공인타당도면에서는 Barren-Welsh 검사와의 상관에서 76의 상관을 나타냄으로써 공인타당도가 검증되었다 따라서 본 연구에서 개발한 학동기 미술영재성 동기요인 검사도구는 신뢰도와 타당도가 양호하게 검증되었다고 볼 수 있다.

• 대한수학교육학회지:학교수학
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• 제13권3호
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• pp.447-468
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• 2011

고등학교 수학교과과정에서 이차곡선에 관련된 단원의 지도는 다른 어떤 단원보다도 연결성이 고려된 지도가 필요한 단원이다. 다시 말해 대수적 접근 방식과 기하적 접근 방식이 동시에 병렬적으로 지도되어야 한다. 특히 대수적 조작력이 미흡한 하위권 학생들에게는 이차곡선에 대한 성질을 역동적으로 표현하는 시각적 표상을 심어주는 기하적 접근 방식이 더욱 중요하다. 이를 위하여 본 연구는 이차곡선의 지도에 있어서 GeoGebra에 기반한 역동적인 시각적 표상의 중요성을 제안하고자 현행 고등학교 '기하와 벡터' 10종의 교과서와 익힘책의 이차곡선 단원 중 포물선에 관련된 부분을 분석하여 시각적 표상을 극대화할 수 있는 지도 방안을 제안하는 실험적 수업을 진행하고 학생들의 표상의 변화를 분석하였다.