• International Journal of Automotive Technology
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• v.7 no.1
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• pp.35-41
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• 2006

Driving simulations were performed to evaluate the effect of providing both visual information and body sensory information on changes in steering characteristics and the amount of perspiration in drift cornering. When the driver is provided with body sensory information and visual information, the amount of perspiration increases and the driver can perform drift control with a moderate level of tension. With visual information only, the driver tends to easily go into a spin because drift control is difficult. In this case, the amount of perspiration increases greatly as compared with the case where body sensory information is also provided, reflecting a very high perception of risk. When body sensory information is provided, the driver can control drift adequately, feeding back the roll angle information in steering. The importance of the driver's perception of the state of the vehicle was thus confirmed, and a desirable future direction for driver assistance systems was determined.

• Proceedings of the ESK Conference
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• 1997.04a
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• pp.107-113
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• 1997

In this paper, an interfacing method to control rehabilitation assitance system with bio-signal is proposed. Controlling with EMG signals method has certain advantage on signal-collecting, but has some drawbacks in the function resolution of EMG signals because data-processing process is not efficient. To improve function-resolution and to increase the efficiency of EMG signal interfacing with rehabilitation assistance system, Multi-layer Perception which is highly effective with static signal and hidden-Markov model for dynamic signal resolving are fused together. In proposed method. The direction and average speed of the rehabilitation assitance system are controlled by the trajectory control and estimation of the moving direction result from the fused model. From the experiment, proposed GMM and 2-level MLP hybrid-classifier yielded 8.6% perception-error rate, improving function resolution. New acceleration control method constructed with 3 nested linear filter produced continuous acceleration paths without the information of destination point. Thus, the mass output caused by non- continuous acceleration-deceleration was eliminated. In the simulation, the necessary calculation, in the case of multiplication, was reduced by 11.54%.

• The Journal of Korean Academic Society of Nursing Education
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• v.4 no.2
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• pp.147-158
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• 1998

The purpose of this study was to identify the effect of music therapy on state anxiety, perception of pain of dental patients. The subjects consisted of forty patients undergoing dental treatment at one dental clinic. Twenty eight of them were assigned to the experimental group, while twelve subjects to the control group. The data were collected from June 29 to August 1, 1998 by means of a state anxiety scale (by Spielberger) questionnaire and visual analog scale for pain measurement. The data were analysed with $X^2$-test, t-test, and paired t-test. The results are as follows 1) There were no significant differences between the experimental and the control group on the post treatment the state anxiety score. However, in the experimental group, the state anxiety score decreased significantly after music therapy(t=3.19, p=0.003). In the control group, the state anxiety score did not decrease significantly(t=1.65, p=0.126). Especially, high score group on the state anxiety was found to be of significant differences in the experimental group (t=3.09, p=0.007). 2) There were no significant differences between the experimental and the control group on the post treatment perception of pain. However, after music therapy, the experimental group had a lower post treatment perception of pain than the control group. 3) After music therapy, subjective response of the experimental group was one of relative contentment. From these results, it is concluded that music therapy as a nursing intervention can be effective in decreasing anxiety in dental patients.

• Journal of The Korean Association For Science Education
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• v.17 no.2
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• pp.139-148
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• 1997

This study investigated the influences of the cooperative learning strategies upon students' achievement and their perceptions of learning environments in a middle school physical science course. Prior to instruction, the Group Assessment of Logical Thinking was administered, and its score was used as a blocking variable. Mid-term examination score was used as a covariate. For the treatment group with heterogeneous grouping, cooperative learning instruction (the Learning Together model) was used, which emphasized group reward, individual accountability, and role division. For the control group, traditional instruction was used. After instruction, an achievement test consisting of three subtests (knowledge, understanding, and application), and the perception questionnaire of classroom and laboratory environments, were administered. ANCOVA results revealed that there was a significant interaction between instruction and the level of logical reasoning ability although there were no significant differences in all three subtest scores of the achievement test. For the concrete operational reasoners, the treatment group performed better in the subtests of understanding and application than the control group. For students at the formal and transition levels, however, the treatment group scored lower than the control group. Significant interactions were also found in the perceptions of classroom environment and laboratory environment. For the concrete operational reasoners, the treatment group showed more positive perception than the control group. For the students at the formal and transition levels, the control group had positive perception than the treatment group. Educational implications are discussed.

• Korean Journal of Community Nutrition
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• v.10 no.6
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• pp.805-813
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• 2005

Concern about body weight among adolescents is too much, so distorted body images and weight control are serious problems among Korean girl students. This study was carried out to investigate perception of body images, weight control, food habits and eating behavior of 237 high school girl students in Seoul and Incheon. The subjects were divided into four groups based on Body Mass Index (BMI)-under weight ($21.3\%$), normal ($62.6\%$), over weight ($8.1\%$) and obesity ($8.1\%$). The survey was conducted from June to July 2005. The mean weight, length and BMI of the subjects was $53.4\pm7.4\;g,\;101\pm4.8\;cm,\;and\;20.6\pm2.7$, respectively. $56\%$ of the under weight group and $40.8\%$ of normal group had incorrect perception about their body images and $28.5\%$ of the under weight group and $76.9\%$ of the normal group had dissatisfaction about their body images. Most of the students were concerned about their body images and weight control. Dietary habit scores showed significant differences among the groups. These results suggested that effective nutritional programs should be developed including correct Perception of body image and good dietary habits. (Korean J Community Nutrition 10(6) : $805\∼813$, 2005)

• Women's Health Nursing
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• v.10 no.2
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• pp.128-135
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• 2004

Purpose: Women who undergo gynecological surgery have moderate and severe sensation and distress of pain despite the advent of patient controlled analgesia (PCA). The purposes of this study were to describe perception of non-pharmacological therapy for postoperative pain control and examine changes of pain sensation and distress in women who had gynecological surgery. Method: The sample consisted of 52 women who were having gynecological surgery. Subjects who agreed to participate in the study were asked for their opinion about non-pharmacological approaches for postoperative pain control using a structured study questionnaire. Pain sensation and distress were assessed by VAS in the morning and afternoon for 2 days following the surgery. Result: About 50% of the subjects thought that non-pharmacological methods such as relaxation, music, massage, or meditation would be helpful for their postoperative pain control. If both pharmacological and non-pharmacological therapy were given for pain control, 96% of subjects reported it would be effective. Nurses can apply techniques of relaxation, deep breathing, meditation, and music therapy to surgical patients along with PCA. Expected sensation and distress of pain was high, but pain levels gradually decreased over time. However, subjects experienced moderate levels of pain postoperatively although they used PCA. Conclusion: The effect of a combined method of pharmacological and non-pharmacological approach needs to be tested if postoperative pain is to be decreased more.

• International Journal of Human Ecology
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• v.13 no.1
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• pp.117-128
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• 2012

This study compares the net effect of wearing different shoulder/arm armor systems on garment impediment perception and wearer acceptability. Two independent variables in this study were armor systems and shoulder/ arm movements. There were four armor systems of control garment and arm armor systems A, B, and C as well as five types of arm/shoulder movements, (shoulder flexion, should extension, shoulder abduction, shoulder horizontal flexion, and shoulder horizontal extension). Ten male volunteers wearing size medium battle dress uniform (BDU) with recent relevant military experience participated in this study. The volunteers performed shoulder/arm movements (while wearing each armor treatments) and completed the garment impediment perception as well as wearer acceptability scales. The body areas of neck side, shoulder top, and armscye front showed the highest frequency of reported impediments. Resistance to movement and localized pressure were the most frequently mentioned types of impediment. The armor system B had the most areas of impediment, and was rated as more restrictive than the control garment and armor system A for each movement. For wearer acceptability, no significant differences were found between the control garment and armor system A for all eight items; this indicated that subjects did not perceive a difference between wearing the control garment and armor system A. There was a trend for wearer acceptability to decrease from wearing the control garment to armor systems A to C to B.

• Nutrition Research and Practice
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• v.15 no.1
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• pp.106-121
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• 2021

BACKGROUND/OBJECTIVES: The objective of this study was to examine factors affecting cooking behavior at home. We examined components of the theory of planned behavior, perception of cooking skills, and socio-demographic variables affecting cooking behavior at home. SUBJECTS/METHODS: The study sample included 425 women raising elementary school children living in South Korea. They responded to an online structured questionnaire. The variables affecting cooking behavior at home were assessed using hierarchical regression analysis. RESULTS: The frequency of cooking behavior at home was 14.1 meals per week. Most respondents showed an intention regarding cooking behavior. The average score for attitude toward cooking behavior at home was 15.1 points (scale of 1 to 25). Attitude and cooking behavior showed a significant positive correlation (P < 0.01, r = 0.22). The subjective norm was 14.6 points (scale of 1 to 25). The subjective norm showed a significant correlation with cooking behavior (P < 0.01, r = 0.18). The control belief was 2.8 points (scale of 1 to 5). The control belief and cooking behavior showed a significant correlation in all questions (P < 0.01, r = 0.25). The subjects were significant confident about their cooking skills, except for Kimchi. Perception of cooking skills showed a significant correlation with all questions concerning cooking behavior (P < 0.01, r = 0.30). Significant variables for predicting intention regarding cooking behavior were perception of cooking skills, employment status, income, and attitude. Significant variables for predicting cooking behavior were employment status, income, control belief, number of children, and behavioral intention. CONCLUSIONS: In order to provide nutrition education to increase cooking behavior at home, it is necessary to have a positive attitude toward cooking behavior, increase control belief, and improve confidence related to cooking skills. Moreover, differentiated education based on the employment status of women is needed.

• 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.

• Journal of the Ergonomics Society of Korea
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• v.26 no.1
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• pp.1-10
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• 2007

As drivers spend more time in their cars, perception of driving a vehicle turns from utilizing a transportation means into residing in a personal space or even in moving office. Such a perception renders automobile manufacturers incorporate more vehicle functions, especially in-vehicle information systems As the number of system functions increases, the complexity of control and 2 types of display menus were designed after a literature review and a market analysis. With these controls and display menus, the experiment was performed to look into the difference of driver performance and preference on the integrated vehicle control type. Finally, the study suggests the integrated vehicle control type to minimize driver's cognitive load, and to use various functions efficiently. The study also discusses the practical use of the final integrated vehicle control type.