• Title/Summary/Keyword: Speed Perception

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The perception of subjective speed sense by drivers' age on types of median (중앙분리대 형태에 따른 운전자 연령별 주관적 속도감 지각)

  • Sun Jin Park;Soon Chul Lee
    • Korean Journal of Culture and Social Issue
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    • v.17 no.1
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    • pp.51-62
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    • 2011
  • This study focused on the effects of median type on drivers' subjective sense of speed and the changes in this sense by driver age. Participants were 61 drivers: 20 young (aged 20-39 years), 19 middle-aged (40-59 years), and 22 older drivers (60+ years). The participants watched each of two driving scenarios, showing either a guardrail-equipped or a concrete median. The participants were asked to push a button when they perceived speeds of 60 km/h, 80 km/h, or 100 km/h. All drivers perceived higher speeds in the guardrail condition than in the concrete condition. Perceived speeds increased with driver age in both guardrail and concrete conditions. These results mean median type affects drivers' subjective sense of speed even as driver age increases, and that drivers' subjective sense of speed tends to increase with age.

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A Study on Conversion of Supply Chain Organization Based on Theory of Sense and Response : Focus on Marine Corps's supply chain (감지반응 이론을 기반으로 한 공급체인 조직변환에 관한 연구 : 해병대 공급체인을 중심으로)

  • Kim, Gab-Joo;Kim, Jae-Hyun
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.30 no.4
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    • pp.155-163
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    • 2007
  • Future war needs a lot of changes for military organization. Specially, concept of the "Speed" is raised importantly after Iraq war of U.S. Armed Forces. So, He is a lot of studying supply chain for logistical support speed improvement. Korea Marine Corps has made an efforts to improve supply chain. However it is real that is putting various techniques by prescription rather than fundamental change. These simplicity prescriptions are not only systematic but also insufficient for Marine Corps' survival. In addition, Korea marine corps in actuality is depending on many members in marine and navy in feed chain. Thus it is not establishing even tactical, decision-making plan of operation for support ability cultivation. Therefore, in this study, with Sense and Response concept that is United States Marine Corps' support strategy, presented theoretical background and basis frame that serve that Korea Marine Corps's supply chain changes to perception reaction formation.

A Study on the Relationship between Justice Perception of Franchise and Trust, Switching Barriers of the Franchisee in the Barriers and Beauty Parlors Business (이.미용업에서의 프랜차이즈 공정성 지각이 신뢰와 전환장벽에 미치는 영향)

  • Kim, Kyeong Ran;Ryu, Hwang Gun;Oh, Chang Seok
    • The Korean Journal of Health Service Management
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    • v.1 no.1
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    • pp.75-89
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    • 2007
  • The start point of a franchise system such as Lotteria was in 1979. Since 1990, the franchise systems in Korea have rapidly spread over all industry types. As 'Franchise Law' was enforced in 2002, the expansion of a franchise picked up its' speed. The barbers and beauty parlors business has the same expansion trend. However, there was no study about the franchise systems in the barbers and beauty parlors business. The purpose of this study was to find the goodness of fit of the structured equation model proposed and identify the significances of relationships in the variables of justice perceptions, trust, satisfactions, business performances, switching barriers, switching cost etc. This study tries to find a solution for a good development between franchisor and franchisee in the barbers and beauty parlors business in Korea. The theoretical considerations about justice of this study is limited in reciprocal relation justice and procedure justice. And it did make simplify for trust, satisfaction, business performance, switching barrier. And switching barrier did measure as dimension of switching coot. From October 26, 2005 to October 29, this study collected 250 survey questionnaires from the franchisees located in Seoul, Busan, Daegu, Ulsan, and Keoyng-Nam. In analyses of using SPSS Windows 11.0 and LISREL 8.14, this study used 208 cases because 48 cases did not response appropriately. Tn conclusions. reciprocal justice perception and procedure justice jointly determined trust. Secondly, reciprocal justice perception significantly determined satisfaction. Procedure justice perception negatively determined satisfaction, but this relationship was not significant. Thirdly, reciprocal justice perception positively influenced business performance, and procedure justice negatively influenced business performance, but the last relationship was not significant Fourthly, trust positively significantly influenced satisfaction and business performance. Fifthly, satisfaction positively influenced business performance and true determined switching barrier positively. This study shows following: firstly, a composition concept did make structural relationship and secondly, a reciprocal relation justice of a franchisor did appear as an important variable and it gives positive influence to trust, satisfactions, business performance, switching barriers of the franchisees.

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Effect of Inconsistency Between Visually Perceived Walking Speed and Physically Perceived Walking Speed on VR Sickness in VR-Treadmill Walking (가상현실-트레드밀 보행에서 시각적 속도감과 보행 속도감의 불일치가 가상현실 멀미에 미치는 영향)

  • Choi, InBeom;Park, Jong-Jin;Kim, ShinWoo;Li, Hyung-Chul O.
    • Science of Emotion and Sensibility
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    • v.23 no.3
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    • pp.79-90
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    • 2020
  • The inconsistency in different sensory information causes virtual reality (VR) sickness. This research verifies whether the consistent sensory information reduces VR sickness within treadmill-based virtual reality. Furthermore, we examined the inconsistency between the visually perceived walking speed by optical flow in VR and the physically perceived walking speed in treadmill walking on VR sickness. In Experiment 1, participants reported VR sickness levels while experiencing an increase in the virtual reality. We compared the VR sickness level reported on the standing still condition with that on the treadmill-walking condition. Based on our results, less VR sickness and more sense of presence and immersion were reported on the treadmill-walking condition than on the standing still condition. In Experiment 2 and Experiment 3, the effect of inconsistency between perceived visual speed and perceived walking speed on VR sickness was examined. Interestingly, participants reported less sickness when the perceived visual speed was faster than the perceived walking speed, compared to when the sense of speed was consistent. These results imply that allowing participants to walk on a treadmill while experiencing virtual reality reduces VR sickness. Hence, the perceived visual-walking speed consistency is not necessarily required to reduce VR sickness.

An Analysis of Factors Affection of Elderly's Speed of Mobile Phone Ability (노인의 휴대전화 사용속도에 영향을 미치는 요인 분석)

  • Yang, Young-Ae;Jo, Eun-Ju;Park, Soo-Hee;Park, Su-Jong;Kim, Hye-Rin;Lee, Myung-Hwa;Yang, Mi-Yeon
    • Journal of the Ergonomics Society of Korea
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    • v.27 no.4
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    • pp.1-8
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    • 2008
  • Objective: This study is to analyze the factor affecting elderly's speed of mobile phone ability. Method: Sixty healthy senior citizens who live in Kim-hye participated in Cognition, Visual perception, Speed of mobile phone ability and the collected data was analyzed by an independent multiple regression analysis. Result: The findings can be summarized as follows; 1. Although men were faster than women while using mobile phone, there was little satisfical significance(p<0.05). 2. Although people in their sixties were faster than people in their seventies while using mobile phone, there was minial difference(p<0.05). 3. The primary factor which affect mobile phone using speed is figure ground, visual memory, visual processing and the most beneficial discovery in the entire project is figure ground(p<0.05). Conclusion: The result of study showed that in order to enhance figure ground, visual memory, visual processing in mobile phone using speed. These results will be consider useful for elderly's mobile phone ability.

A comparison between affective prosodic characteristics observed in children with cochlear implant and normal hearing (인공와우 이식 아동과 정상 청력 아동의 정서적 운율 특성 비교)

  • Oh, Yeong Geon;Seong, Cheoljae
    • Phonetics and Speech Sciences
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    • v.8 no.3
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    • pp.67-78
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    • 2016
  • This study examined the affective prosodic characteristics observed from the children with cochlear implant (CI, hereafter) and normal hearing (NH, hereafter) along with listener's perception on them. Speech samples were acquired from 15 normal and 15 CI children. 8 SLPs(Speech Language Pathologists) perceptually evaluated affective types using Praat's ExperimentMFC. When it comes to the acoustic results, there were statistically meaningful differences between 2 groups in affective types [joy (discriminated by intensity deviation), anger (by intensity-related variables dominantly and duration-related variables partly), and sadness (by all aspects of prosodic variables)]. CI's data are much more louder when expressing joy, louder and slower when expressing anger, and higher, louder, and slower when it comes to sadness than those of NH. The listeners showed much higher correlation when evaluating normal children than CI group(p<.001). Chi-square results revealed that listeners did not show coherence at CI's utterance, but did at those of NH's (CI(p<.01), normal(p=.48)). When CI utterances were discriminated into 3 emotional types by DA(Discriminant Analysis) using 8 acoustic variables, speed related variables such as articulation rate took primary role.

The Relationship between Using Both Hands Keyboard Input and Hand Function Among the Lifestyles of University Student (대학생의 라이프스타일 중 양손사용 스마트폰 자판 입력과 손 기능과의 관계)

  • Bae, Seong-Hwan;Kang, Woo-Jin;Kim, Na-Yeong;Kim, Ji-Hyeon;Jo, June-Hyeok;Baek, Ji-Young
    • Journal of Korea Entertainment Industry Association
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    • v.15 no.1
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    • pp.221-228
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    • 2021
  • This study aims to provide basic data for developing hand functional training programs using a keyboard to see if there is a relationship between the smart keyboard input speed using both hands, the Dexterity of the hand and the eye-hand coordination ability. The smartphone keyboard input speed, Purdue Pegboard, Grooved Pegboard Test, and Korean-Developmental-Test of Visual Perception-Adolescent were evaluated for 40 university students Province. An independent sample t-test and one-way ANOVA were conducted to identify differences in smartphone keyboard input speed, dexterity, eye-hand coordination ability and visual-motion using both hands according to the general characteristics of the subjects. Pearson correlation was also conducted to find out the relationship between hand-used smartphone keyboard input speed, hand dexterity, eye-hand coordination ability and visual-motor. As a result, the smartphone keyboard input speed using both hands showed a correlation with the dominant hand in the Purdue Pegboard Test (r=-.313, p<.05). In addition, the input speed of the smartphone keyboard is Copying(r=-.333, p<.05), Visual Motor Search(r=.455, p<.01), Visual Motor speed(r=-.453, p<.01) and Form Constancy (r=-.341, p<.05) in the item of K-DTVP-A. Therefore, it is believed that it will be helpful in the development of a treatment program using a smartphone, and it is expected that the effectiveness of a treatment program using a smartphone will be proven through additional experimental studies in the future.

A Study on the General Wearing Attitude and Brand Image Perception for Golf Wear (골프복 범용착용실태와 이미지 인식에 관한 연구)

  • Koo, In-Sook
    • Journal of Fashion Business
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    • v.12 no.1
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    • pp.76-92
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    • 2008
  • The purpose of this study was to analyze the general wearing attitude & brand Image Perception for Golf Wear in wearer's mind, and to investigate the brand preference on the image characteristics of golf wear, and to find out the wearer's purchasing point for golf wear, for developing the possibility and strategy of the golf wear market for the apparel marketers and manufacturers. For this study, the data obtained from 210 respondents were analyzed by the descriptive statistics, Pearson's simple correlation, Crossing Analysis, parato graph. The results from the study were as follow : The respondents who were specially wearing for golf game were 23.3%(49 persons) among the 210 respondents. The 210 respondents evaluated highly the features of golf wear, such as design(51%), quality(44.3%), materials(36.2%), color(35.2%), size(21.0%), as the purchasing point for golf shirts, otherwise, the 210 respondents evaluated lowly the social aspects of golf wear, such as, fashion conformity, brand loyalty and promotion. And the most important material features for the golf wear was the elasticity, speed dryness by the 210 respondents The most frequent brand by 207 respondents described in the free style was Daks(11.1%) and Ping(11.1%). The 205 respondents described in the free style evaluated Daks(14.6%) as the most preference brand. The reason for the most preference brand was based with the comfort and pleasure of design, quality, color, size, materials.

Difference in the Static Postural Control according to the Subjective Visual Vertical Deviation and Head Orientations

  • Sang Soo Lee;Sang Seok Yeo
    • The Journal of Korean Physical Therapy
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    • v.35 no.5
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    • pp.156-161
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    • 2023
  • Purpose: This study examined the effects of subjective visual vertical perception and head orientation on static balance control. Methods: The subjects were 25 young and healthy adults. The vertical perception was measured using a subjective visual vertical (SVV), and the Center of pressure (COP) parameter was analyzed by continuously measuring the movement of the COP to determine the changes in static postural control. The group was divided based on a deviation of 3° in SVV (11 of SVV≥3°, 14 of SVV<3°) and measured with different head orientations: front, up, down, left, and right in the upright and tandem positions, respectively. Results: In the upright position, the SVV≥3° group had significantly larger values for all COP parameters (Sway length, Surface, Delta X, Delta Y, and Average speed) compared to the SVV<3° group (p<0.05). In the tandem stance, only the Ellipse Surface value was significantly larger among the COP parameters in the group with SVV≥3° compared to the group with SVV<3°(p<0.05). In contrast, the other COP parameters were not significantly different (p>0.05). The effects of static balance control on the head orientation were not statistically significant (p>0.05), and the interactions between the subjective vertical perception and head orientation were not significant (p>0.05). Conclusion: These results suggest that pathological deviations in SVV are associated with impaired static balance performance. This study can provide a therapeutic rationale for using visuospatial cognitive feedback training to improve the static balance.

A Study on the Influences to the Capabilities and Management Performances of Technologically Innovative SEMs caused by the Environmental Perception Capabilities - Comparisons of the Rapidly Internationalizing Enterprises and Gradually Ones - (한국 기술혁신형 중소기업의 환경변화 감지능력이 기업역량과 경영성과에 미치는 영향에 관한 연구 - 급진적 국제화기업과 점진적 국제화기업을 비교하여 -)

  • Kim, Moon-Hong;Yoon, Ki-Chang
    • International Area Studies Review
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    • v.13 no.3
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    • pp.501-525
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    • 2009
  • Recent increase of academic interest in Born Globals has brought abundant researches, which accounts their causes and states, both in and out of the country. However, postulating that types of companies see the different perception of environment of global markets, and this difference will also bring different effects on enterprise capabilities and performance, this study implemented theoretical inquiry and evidential analysis. Technologically innovative SMEs, main subjects of this study, were categorized into Rapid Globals and Gradual Globals according to their internationalization speed, then followed by a CSA. This analysis has shown, regardless of corporate types, early perception of changes in global market environments, affects, in great amount, on marketing and R&D capabilities as well as performance. However, corporate types also showed difference in early perception of changes, marketing and R&D capabilities as well as performance. This evidential analysis provides enterprises pursuing internationalization in early stage with enforcement in their early perception of changes in global market environments.