• Title/Summary/Keyword: The Visual Perception

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Perceptions of Anticoagulation Therapy and Medication Adherence among Patients taking Warfarin (와파린 복용 환자의 항응고요법에 대한 인식과 약물복용 이행)

  • Chu, Sang-Hui;Kang, Seok-Min;Kim, Do-Ree;Lee, Yoon-Ju
    • Journal of Korean Biological Nursing Science
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    • v.14 no.1
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    • pp.66-75
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    • 2012
  • Purpose: This study was conducted to measure medication adherence and perceptions of anticoagulation therapy and its relationship to patients taking warfarin. Methods: in a cross-sectional survey, 150 patients taking warfarin who had visited an outpatient clinic of a cardiovascular center in Seoul were included as research subjects. Medication adherence was measured using a visual analogue rating scale (VAS). Barriers and attitudes toward adherence, and oral anticoagulation knowledge, were measured using a structured questionnaire. Participants' medical records also were reviewed to identify clinical characteristics. Results: About one third of the participants (30.7%) reported medication adherence as 100%. The major barriers to adherence were identified as "Forgetting the time of medication" and "Not carrying their medication". Overall attitudes toward medication adherence were high, but oral anticoagulation therapy knowledge was low. To determine the relationship of medication adherence and perceptions of anticoagulation therapy, participants were stratified into three groups, based on their medication adherence levels (high adherence, moderate adherence, low adherence). Participants in the high adherent group more likely to be older (OR: 1.04, 95% CI: 1.005-1.071) and to have positive attitudes toward medication adherence (OR: 1.12, 95% CI:1.013-1.229) compared to the other two groups. Conclusion: The results show that age and attitude exerts significant influence on medication adherence in patients taking warfarin.

Comparison of Shade Changes According to Dry/Wet Condition of Tooth using Intra-Oral Colorimeter (건조정도에 따른 자연치아의 색조비교)

  • Choi, Mee-Ra
    • Journal of Dental Rehabilitation and Applied Science
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    • v.26 no.3
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    • pp.265-271
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    • 2010
  • One of the most important aspect of esthetic dentistry is shade selection. Alterations to perception of color can occur as a result of numerous factors, including light source, tooth surface texture, observer's ability, surrounding colors, the angle of observation, light and dark adaptation and others. During the clinical procedures, tooth might be in dry or semi-dry condition. The purpose of this study was to compare the shade changes in wet and dry conditions of natural tooth. Groups of measurement are an initial wet condition as control, dry in 10seconds, 1 minute, 5minutes and 30seconds air dry. Using Shadeeye, color difference(${\Delta}E$) between measurements were analyzed and there were significant differences between groups. But most of the differneces were <3.7 ${\Delta}E$ unit. Such differences are below the threshold for perceivable color mismathces in intraoral condition. Shade selection with an intraoral colorimeter could be changes in dry and wet condition but there might be no significant differences in visual color mathing.

Generation of Stereoscopic Image from 2D Image based on Saliency and Edge Modeling (관심맵과 에지 모델링을 이용한 2D 영상의 3D 변환)

  • Kim, Manbae
    • Journal of Broadcast Engineering
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    • v.20 no.3
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    • pp.368-378
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    • 2015
  • 3D conversion technology has been studied over past decades and integrated to commercial 3D displays and 3DTVs. The 3D conversion plays an important role in the augmented functionality of three-dimensional television (3DTV), because it can easily provide 3D contents. Generally, depth cues extracted from a static image is used for generating a depth map followed by DIBR (Depth Image Based Rendering) rendering for producing a stereoscopic image. However except some particular images, the existence of depth cues is rare so that the consistent quality of a depth map cannot be accordingly guaranteed. Therefore, it is imperative to make a 3D conversion method that produces satisfactory and consistent 3D for diverse video contents. From this viewpoint, this paper proposes a novel method with applicability to general types of image. For this, saliency as well as edge is utilized. To generate a depth map, geometric perspective, affinity model and binomic filter are used. In the experiments, the proposed method was performed on 24 video clips with a variety of contents. From a subjective test for 3D perception and visual fatigue, satisfactory and comfortable viewing of 3D contents was validated.

Image Recognition Using Colored-hear Transformation Based On Human Synesthesia (인간의 공감각에 기반을 둔 색청변환을 이용한 영상 인식)

  • Shin, Seong-Yoon;Moon, Hyung-Yoon;Pyo, Seong-Bae
    • Journal of the Korea Society of Computer and Information
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    • v.13 no.2
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    • pp.135-141
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    • 2008
  • In this paper, we propose colored-hear recognition that distinguishing feature of synesthesia for human sensing by shared vision and specific sense of hearing. We perceived what potential influence of human's structured object recognition by visual analysis through the camera, So we've studied how to make blind persons can feel similar vision of real object. First of all, object boundaries are detected in the image data representing a specific scene. Then, four specific features such as object location in the image focus, feeling of average color, distance information of each object, and object area are extracted from picture. Finally, mapping these features to the audition factors. The audition factors are used to recognize vision for blind persons. Proposed colored-hear transformation for recognition can get fast and detail perception, and can be transmit information for sense at the same time. Thus, we were get a food result when applied this concepts to blind person's case of image recognition.

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Analgesia After Subacromial Arthroscopy: Prospective Double-blind Study of Continuous Mixed Intra-bursal Infusion with Morphine and Bupivacaine and placebo (견봉하 관절경 수술 후 진통 작용: 모르핀과 국소마취제 혼합제와 위약의 점액낭 내 지속 주입에 대한 전향적 이중 맹검 연구)

  • Park Jin-Young;Lee Kwan-Woo;Kim Yun;Yoo Moon-Jib
    • Clinics in Shoulder and Elbow
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    • v.3 no.2
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    • pp.102-108
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    • 2000
  • The aim of this study is to determine if intra-bursal morphine and Bupivacaine mixed infusion provided useful analgesia after subacromial arthroscopic operation. At the end of the subacromial arthroscopy, continuous intra-bursal infusion catheter was inserted. In a double-blind randomized trial, Sixty patients were allocated to one of two groups: placebo group(n=30) received continuous saline infusion. Study group received mixed 5㎖ of 0.5% Bupivacaine, 2㎎ of morphine and 0.05㎖ of 1/1000 epinephrine as bolus and mixed solution of 40㎖ of 0.5% Bupivacaine and 8㎎ of morphine as maintenance dose with continuous infusion pump(0.5㎖ hourly). In the placebo group, two patients were discontinued due to leakage and catheter coming out each. Intensity of pain was evaluated preoperatively and postoperatively for 3 days by 10 graded visual analogue scale. Night pain, pain on motion, sleep disturbance, lying on painful shoulder and amounts of intramuscular pain killer were recorded. Analgesic effect for pain was cleared at 1st and 2nd postoperative day and there was less sleep disturbance for 3 days postoperatively in study group. There was no difference in pain on motion postoperatively. In study group, less pain killers were used in the first 48 hours postoperatively. The continuous intra-bursal infusion decreased perception of pain at resting stage and reduced supplemental analgesic requirement for 2 days postoperatively.

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An analysis of Self-perceived Communication Apprehension by Learning Styles of Engineering Students (공과대학생의 학습양식에 따른 의사소통 불안인식 분석 연구)

  • Kim, Ji-Sim;Choi, Keum-Jin;Lee, Jong-Yeon
    • Journal of Engineering Education Research
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    • v.13 no.6
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    • pp.3-13
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    • 2010
  • The purpose of this study was to investigate between learning styles and communication apprehension of Engineering students. Participants were 405 first-year Engineering cohort. Following were the results: First, 80 percent were classified as Reflective learners, 61 percent were classified as Sensing learners, 73.1 percent were classified as Visual learners, and 66.7 percent were classified as Global learners. Second, the result showed that there was a significant difference in learning style by gender. Most female learners were Reflective, while most male learners were Active. Lastly, the finding revealed that there were significant differences in communication apprehension on Perception and Processing dimension. Sensing students demonstrated higher level of communication apprehension than Intuitive students and Reflective students shown higher level of communication apprehension than Active students. For the program developing Engineering students' communication skills, implications for reducing students' communication apprehension based on the type of learning styles were discussed.

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A Study on Perception of Project Risk Factor - Comparison between Software Package and Development with Program Language in Information System Project - (프로젝트 위험요인 인식에 관한 비교 연구 - 정보시스템 구현 프로젝트에서 소프트웨어 패키지 적용과 순수 개발하는 경우 -)

  • Park, Song-Mee;Chae, Myung-Sin
    • The Journal of Information Systems
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    • v.16 no.4
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    • pp.243-268
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    • 2007
  • It is critical to manage risks to complete IS(Information Systems) projects successfully. Identifying risk factors would be the first step for the project risk management. Previous research has discussed the issue with various points of view, such as different risk factors based on project types and roles involved in their projects. This paper empirically explored how people perceive different risk factors by project development methodology, between self-developing IS using programming language like C, Visual Basic and adapting software package already developed by software venders like ERP, CRM packages. There are researches regarding project risk factors for project management in the several point of views. And there are also researches regarding comparison between self-developing and adapting software packages methodology in IS project. However, there are no study on project risk factors comparison between self-developing IS using programming language and adapting software packages already developed by software venders in IS project. This research can be differentiated from previous ones, because it was considered both point of project risk management and development methodology in IS project. This research results implied meaningful messages to enterprise company to be planned IS projects and people who involved in IS projects. They should consider and need to prepare differently according to each development methodology for preventing project risks. It makes them reduce project risks in each case and complete successfully IS projects. Especially, if they have no experiences for implementing software packages, they can forecast the project risks and prepare them in advance.

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Ontology-Based Dynamic Context Management and Spatio-Temporal Reasoning for Intelligent Service Robots (지능형 서비스 로봇을 위한 온톨로지 기반의 동적 상황 관리 및 시-공간 추론)

  • Kim, Jonghoon;Lee, Seokjun;Kim, Dongha;Kim, Incheol
    • Journal of KIISE
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    • v.43 no.12
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    • pp.1365-1375
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    • 2016
  • One of the most important capabilities for autonomous service robots working in living environments is to recognize and understand the correct context in dynamically changing environment. To generate high-level context knowledge for decision-making from multiple sensory data streams, many technical problems such as multi-modal sensory data fusion, uncertainty handling, symbolic knowledge grounding, time dependency, dynamics, and time-constrained spatio-temporal reasoning should be solved. Considering these problems, this paper proposes an effective dynamic context management and spatio-temporal reasoning method for intelligent service robots. In order to guarantee efficient context management and reasoning, our algorithm was designed to generate low-level context knowledge reactively for every input sensory or perception data, while postponing high-level context knowledge generation until it was demanded by the decision-making module. When high-level context knowledge is demanded, it is derived through backward spatio-temporal reasoning. In experiments with Turtlebot using Kinect visual sensor, the dynamic context management and spatio-temporal reasoning system based on the proposed method showed high performance.

The Interaction Effect of Foreign Model Attractiveness and Foreign Language Usage (외국인 모델의 매력도와 외국어 사용의 상호작용 효과)

  • Lee, Ji-Hyun;Lee, Dong-Il
    • Journal of Global Scholars of Marketing Science
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    • v.17 no.3
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    • pp.61-81
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    • 2007
  • Recently, use of foreign models and foreign language in advertising is a general trend in Korea even though the effect has not been well-known..Most of the previous research shows rather an opposite effect claiming marketing communication is more effective when higher congruity between marketing communication and consumer's cultural values are achieved. However, the introduction of global culture due to the expansion of new media such as Internet or cable television makes the congruity not the best choice of marketing strategy. In addition, use of highly attractive models in advertising to increase the effect of advertising is general. However, recent studies show that targeted women audience tend to compare themselves to the highly attractive models and do experience negative sentiment. Bower (2001) proved the difference between 'comparer' and 'noncomparer' when women face highly attractive models. The results show that a comparer who has an intention to compare highly attractive model (HAM) with herself has a significantly negative effect on model expertise, product argument, product evaluation and buying intention. Therefore, HAM is not always a good choice and model attractiveness plays a role in the processing other cues or changing the advertising effect from result of processing other cues. The purpose of this study is to investigate the effect of the use of foreign language on the advertising response of the audience with regard of the model attractiveness. For the empirical study, the virtual advertising using foreign models (HAM, NAM), brand names and slogans(Korean, English) were used as stimuli. The respondents of each stimulus were 75('HAM-Korean'), 75('NAM-Korean'), 66('HAM-English') and 66 ('NAM-English') respectively. To establish the effect of marketing communication, the attitude for media(AM), the attitude for product(AP), targetedness(TD), overall quality(OQ), and purchase intention(PI) with 7 point likert scale were measured. The manipulation was verified to check the difference between HAM attractiveness assessment (m=3.27) and NAM attractiveness assessment (m=5.12). The mean difference was statiscally significant (p<.05). As a result, all consequences were significantly changed with model attractiveness, and overall quality evaluation(OQ) were significantly changed with language. The interaction effect from model attractiveness and language was significant on attitude toward the product(AP) and purchase intention(PI). To analyze the difference, the mean values and standard deviation of consequences were compared. The result was more positive when model attractiveness was high for all consequences. For language effect, the assessment was more positive when English was used for OQ. Considering model attractiveness and language simultaneously, HAM-Korean was more positive for AP and PI, and NAM-English was more positive for AP and PI. In other words, the interaction effect was confirmed by model attractiveness and language. As mentioned above, use of foreign models and foreign language in advertising was explained by cultural match up hypothesis (Leclerc et al. 1994) which claimed that culture of origin effect. In other words, in advertising, use of same cultural language with the foreign model could make positive assessment for OQ. But this effect was moderated by model attractiveness. When the model attractiveness was low, the use of English makes PI high because of the effect of foreign language which supported the cultural match up hypothesis. When the model attractiveness was low, the use of Korean made AP and PI high because the effect of foreign language was diluted. It was a general notion that the visual cues got processed before (Holbrook and Moore, 1981; Sholl et al, 1995) compared to linguistic cues. Therefore, when consumers were faced HAM, so much perception was already consumed at processing visual cues making their native language of Korean to strongly and positively connected with the advertising concept. On the contrary, when consumers were faced with NAM, less perception was consumed compared to HAM, making English to accompany cultural halo effect which affected more positively. Therefore, when foreign models were employed in advertising, the language must be carefully selected according to the level of model attractiveness.

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Effects of whole body movements in using virtual reality headsets on visually induced motion sickness (전신 움직임을 요구하는 컨트롤러가 가상현실 디바이스에서 시지각과 가상현실 멀미에 끼치는 영향)

  • Kim, Sung-ho;Shin, Dong-Hee
    • Journal of Digital Contents Society
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    • v.18 no.2
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    • pp.283-291
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    • 2017
  • Though new body movement based input system immerged in Virtual Reality (VR), VR still has a visually induced motion sickness (VIMS) problem to be accepted for users. VIMS are caused by changes in visually perceived movement that discord with vestibular system's sense of movement. Not only Head-body movements, but also hand gestures to make commands and torso movement can affect visual movement perception by enhancing immersion and its psychological product; presence. The question arises does whole body movement and hand gesture to make commands are more dominant to arousal, presence, and VIMS? To address this question, we conducted "2 (IV1; head-body movements only vs. whole body movements) * 1" between subject design experiment. The results showed that significant effect on whole body movements and arousal, marginally significant effect on presence. Eyewear usage was a moderator between hand gesture and presence relationship.