• Elastomers and Composites
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• v.29 no.3
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• pp.213-225
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• 1994

The Purpose of this dissertation is to study the preparation technique and physical properties of expanded rubber. The respective samples of NR, NBR and the standard compounds of EPDM rubber were prepared by mixing plasticizer DOP and LCR in various ratio. And their vulcanization characteristics, physical properties and foaming states were studied. Vulcanization characteristics were investigated using cure curve that had been obtained from Oscillating Disk Rheometer study, and the microscopic photographs of foaming states were obtained using electron microscope. The vulcanization characteristics of the samples, DOP 30phr and LCR 30phr, were found to be suitable. The tests, like hardness test and resilience, tensile test on the physical properties of each sample showed that plasticizing efficiencies of DOP and LCR were almost the same. Oil resistance test exhibited DOP was better than LCR and compression set test showed LCR was excellent plasticizer. The foaming states of NR, EPDM compounds were uniform, but those of NBR compounds were not uniform. Consequently vulcanization characteristics, physical properties and foaming states of all the samples satisfied the SAE requirements.

• Korean journal of food and cookery science
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• v.13 no.4
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• pp.410-416
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• 1997

Changes in sensory and physical characteristics of Wanjajeon (Korean pan fried meat balls) were investigated during chill storage for a hospital cook/chill foodservice system. Wanjajeon was cooked, stored at 2$^{\circ}C$ or 7$^{\circ}C$ for 4 weeks, and reheated by using a microwave oven. The physical characteristics such as texture, color and organoleptic properties were measured. The chewiness of Wanjajeon increased during 4 weeks of storage at both temperatures. Reheating of stored Wanjajeon resulted in a significant increase in the hardness and chewiness. The redness (a value) was significantly increased, while the lightness and yellowness (L and b values) were changed slightly. Sensory evaluation showed that Wanjajeon was acceptable for up to 3 weeks of storage at 2$^{\circ}C$ and to 2 weeks at 7$^{\circ}C$. The sample stored at 2$^{\circ}C$ was more acceptable than that of 7$^{\circ}C$ storage through the whole period.

• The Journal of Korean Physical Therapy
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• v.13 no.2
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• pp.453-458
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• 2001

The aim of this study is to present the basic reference data of age and specific gait parameters for Parkinson's Disease Patients. The basic gait parameters were extracted from 5 patients, 5 men and 65 years of age using VICON 512 Motion Analyzer. The temporal gait parameters and kinematic parameters is data of Parkinson's Disease Patients. The results were as follows; 1. The cadence, velocity, stride length decreased and single limb support period, double limb support period increased than normal adult in the temporal parameters. 2. The mean angles of joint pelvic tilt and hip, knee, ankle joint decreased than normal adult at kinematic characteristics on sagittal plane. 3. The mean angles of joint pelvic tilt and hip, knee joint has no difference than normal adult at kinematic characteristics on coronal plane. 4. The mean angles of joint pelvic tilt, hip joint no difference and internal, external rotation in ankle joint significantly decreased than normal adult at kinematic characteristics on transverse plane.

• Korean Journal of Health Education and Promotion
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• v.31 no.3
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• pp.51-61
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• 2014

Objectives: The purpose of this study was to identify the effects of job characteristics on smoking, and the mediating effects of job stress between job characteristics and smoking among elderly workers. Methods: This study employed data from the Korean Longitudinal Study of Ageing, and a total of 778 older workers were used for analysis. Current smoking status, job stress, job characteristics including physical job demands, job demands related to contents, working days, regularity of working hour, satisfaction with income, and sociodemographic factors were analyzed. Descriptive analysis, t-tests, chi-square test, multiple linear regression, and logistic regression were used for analysis. Results: Results showed that physical job demands and regularity of working hours were significant predictors of smoking of elderly workers. The higher level of physical job demands and regular working-hour increased the risk of smoking. Also, physical job demands, job demands related job contents, and income satisfaction directly impacted on job stress. However, job stress did not mediate the relationship between job characteristics and smoking. Conclusions: The findings suggest that smoking interventions for older workers should take into account job characteristics. Implications for practice and future study directions are discussed.

• Korean Institute of Interior Design Journal
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• v.23 no.3
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• pp.3-10
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• 2014

School age is the period when forms the most of physical, spiritual and behavioral developmental characteristics. And those are kept for lifetime. Since each of developmental characteristics is created through the interaction with physical environment, the learning space which is children's main playground should be designed as healing environment. Therefor, the purpose of this research is to find the healing environmental elements for learning space that help school children's developmental characteristics. For that, we researched the physical, spiritual and behavioral developmental characteristics of school children. And we found the healing environmental characteristics for learning space along with each developmental characteristics, by the analysis of Herman Hertzberger's elementary schools' classroom environment.

• The Journal of Korean Physical Therapy
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• v.17 no.1
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• pp.80-95
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• 2005

The purpose of this study was to research the work condition and the degree of job satisfaction of the physical therapist in Jeonnam East area. This study consisted of 120 physical therapists who were working in hospital located in Jeonnam East area from May, 19 to June 16, 2004. The data for analysis were collected by questionnaire survey. The major statistical methods used for the analysis were factor analysis, $x^2-test$, multiple regression analysis. The summarized result are as follows; 1. As for the general characteristics of the surveyed physical therapists was male 61($50.83\%$) and female 59($49.16\%$), majority was 26-30 in age. Most of the respondent worked in local clinics($62.5\%$). Also most of the respondent educated college graduation($68\%$). While the service period less than 12 months accounted for $41.7\%$. 2. The average marks by their job satisfaction factors indicated $56.7\%$ for duty importance, the relation with the patient accounted for $53.3\%$, the mending education for $18.3\%$, the equipment & institution for $20.9\%$. The average job satisfaction score was 3.04. 3. The comparative analysis of job satisfaction and general characteristics among different characteristics of the respondents revealed that there was significant difference between male and female, between 31-40years and 41years or more in ability knowledge & technique satisfaction. 4. The comparative analysis of job satisfaction and work conditions among different characteristics of the respondents revealed that there was significant difference between local clinics and hospital, between yosu&goheung and beolgyo in the mending education satisfaction. 5. Contributing factors for the job satisfaction in Physical therapist were welfare system, the relation with the patient, the service time per patient, mending education, the number of the patient.

• The Journal of Korean Physical Therapy
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• v.23 no.4
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• pp.7-13
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• 2011

Purpose: The purpose of this article is to identify whether the physical therapists perceive the important factors influencing the motor development in children with cerebral palsy differently. Methods: Study participants included 58 pediatric physical therapists. They were recruited from the internet communities for physical therapists. The data was collected through a web-based questionnaire using Google Documents tool. Questionnaire was focused on the importance (10-point scale) of each factor influencing the motor development in children with cerebral palsy. The mean scale of each factor was compared by itself and according to the participants' career characteristics. Results: The personality characteristics received the least importance rating (6.77) in comparison with other domains (healthcare service: 7.70, family ecology: 7.53, secondary impairment: 7.53, primary impairment: 7.45). In the detailed items, home exercise (8.33) received the highest mean importance rating, while sociability (6.03) received the lowest mean importance rating. Comparing the importance of factors by the type of work institution, subjects working in the welfare institutions perceived the contextual factors (personality characteristics, family ecology, healthcare service) as more important than those working in the medical institutions. Conclusion: The authorsuggests that pediatric physical therapists should try to have an identical approach by reaching a consensus. Also, the support for family-centered service to children with cerebral palsy should be strengthened.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.6
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• pp.2664-2671
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• 2012

This study aimed to investigate the relationship between physical characteristics and walking ability in the elderly population. Subjects were 77 elderly (38 men and 39 women) who are capable of walking independently with and without walking aids. Correlation and stepwise multiple linear regression analyses were used to analyze the relationship between physical characteristics (age, gender, height, weight, body mass index, muscle mass, waist/hip ratio, heart rate, vital capacity, flexibility, maximum oxygen consumption, one-leg standing time, and strength of knee flexor and extensor) and walking velocity of subjects. Age, height, vital capacity, one-leg standing time, and strength of knee flexor and extensor showed significant correlations with walking velocity of subjects (p<.05). Further, the strength of knee flexor explained 27% of the variance, and up to 32% of the walking velocity could be explained when the strength of knee extensor were added to the model. The findings suggest that walking velocity of elderly depends on the strength of lower limb's strength and a variety of physical characteristics.

• The Journal of Korean Society for School & Community Health Education
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• v.6
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• pp.117-126
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• 2005

This study attempted to extract a suggestive point to help the design of a program, which is used to promote physical activities, by applying a social cognitive theory based on literature review on the physical activity based on a social cognitive theory. This study considers 10 journal articles that used a social cognitive theory, physical activity, and exercise as the major variable using the EBSCOhost Academic Search Premier and Educator's Reference Desk (ERIC). The type of papers was analyzed using a certain criterion, which can be configured according to the number of each year's papers, characteristics of research subjects, application type of a social cognitive theory, and classification of the application of objects in a social cognitive theory. The characteristics of each year's papers presented no specific characteristics for each year's papers, but the study in 2004 especially presented a high level. The characteristics of research subjects presented four highest cases in the case of the college student, and there were zero cases for children. The application type of studies on physical activities using a social cognitive theory can be largely classified as three types. The results of the measurement using a sectional investigation for SCT objects were 2 cases, the application of SCT for promoting physical activities was 1 case, and the demonstration of evaluation for the effect of SCT objects presented 8 highest cases. Although the social cognitive theory in the characteristics of the classification of object applications can be classified as 10 objects, there were no cases that used 10 all objects, partial applications of the object were measured in 8 studies, and two cases presented no detailed considerations on the object. Most of studies used a part of the object where the application of self-efficacy were measured by 8 highest cases. In addition, there were no measurements on the situation, observation learning, answer and response, and self-management. The elements of attitude, cognitive activity, self-efficacy, and handicaps among the SCT object were commonly used, and studies that the self-efficacy largely affects on the promotion of physical activities presented the main current.

• Journal of The Korean Society of Integrative Medicine
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• v.6 no.4
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• pp.83-90
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• 2018

Purpose : This study aims to examine the correlation between SPQ (sasang personality questionnaire) results and the significance level of general mental and physical health among youths. Effects of physical factors on the level of health are also examined. Methods : For the purpose of this study, the SPQ test and body mass and the Ponderal index were measured. The SPQ was followed by a survey on physical changes among 686 young people. The correlation between SPQ and BMI was analysed using Pearson's corelation. Post hoc tests were conducted on SPQ sub factors (SPQ-B, SPQ-C, and SPQ-E) were examined. Results : The findings from the analysis of the high, middle and lower group profiles of adolescent SPQ-B, SPQ-C, and SPQ-E showed that the three groups had significant results. This study demonstrates the correlations among sub factors of the SPQ. No correlation was observed regarding physical characteristics. Conclusion : This study demonstrates the correlations among sub factors of the SPQ. No correlation was observed regarding physical characteristics.