• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• 제29권2호
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• pp.451-458
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• 1999

Purpose : To determine normal CT number range of parotid gland by analyzing the change by age increase and the difference among individuals and between both sexes in CT number of normal parotid gland. Materials & Methods : 134 subjects who took the CT scan between the period of Jan. 1996 and Dec. 1997 at Yonsei University, Dental Hospital were selected. Criteria for selection were that the patients must be within the normal range clinically and radiologically, and the entire parotid gland on the axial view must be shown. Among the axial views. the one showing the greatest parotid gland size was selected and its CT number was recorded. Also. CT numbers from both masseter muscle were recorded as its control. Results : There was statistically significant correlation between CT number of right and left of parotid glands and masseter muscles. With the increase of age. there is a significant decrease in the CT number of parotid gland(p<0.05). There was no statistically significant difference in CT number between sexes except the 7th decade and beyond age group of parotid gland(p>0.05). Conclusion : As age increases, CT number of parotid gland has a tendency to decrease, and there is no significant difference in the CT numbers between left and right parotid gland. Therefore in the CT scan of patients suspected of having a salivary gland disease of the parotid gland. to consider normal range of the age-dependent CT numbers of parotid gland and compare the CT numbers of the right and left parotid gland might be useful in diagnosing the disease.

• Journal of the Korean Home Economics Association
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• 제39권1호
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• pp.1-10
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• 2001

The purpose of this study was to analysis of design preference according to age of consumers in order to obtain basic informations which are necessary for the development of designs that can satisfy the needs and desire of Chinese consumers. The style, color, fabric pattern, fabric, image, and shape of clothing were used for design preference variations. The study was implemented by surveying 280 females living in Beijing, China. The results were as follows: 1) There were significant differences in the preference of style of outdoor clothes according to age. Chinese women in the age of twenties and fifties prefer to wear casual clothes. Preference ratio was more than 60% 2) There were significant differences in the preference of color of spring and summer clothes, but there was no difference in the preference of color of autumn and winter clothes. 3) There was a difference in the preference of fabric pattern of outdoor clothes. Generally Chinese women showed 50% of preference for the no patterned outdoor clothes. 4) There were no differences in the preference of fabric materials. Preferred material for spring and summer was cotton fabrics, and that for autumn and winter was woolen fabrics. 5) In the research of the preferred image of outdoor clothes, generally Chinese women showed the most preference for elegance style. Chines women who are in the age of thirties to forties preferred feminine style. However, Chinese women who are in the age of fifties like to choose simple style. 6) There was a significant difference in the preference of length of jacket and skirt, and generally Chinese women preferred to wear medium length of jacket and skirt. There was no difference in the preference of design of collar and shape of pants. However most Chinese women showed preference for tailored collar and straight shaped pants.

• Steel and Composite Structures
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• 제28권1호
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• pp.39-49
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• 2018

The concrete bridge decks are usually precast and in-situ assembled with steel girders with post-pouring joint in the construction practice of super-wide steel-concrete composite beam. But the difference of concrete age between the precast slabs and the post-pouring joint has been not yet considered for the long-term performance analysis of this kind composite beam. A simply supported precast-assembled T-shaped beam was taken as an example to analyze the long-term performance of steel-concrete composite beam with post-pouring joint. Based on the deformation coordination conditions of the old-new concrete deck and steel girder, a theoretical model for the long-term behavior of precast-assembled composite beam is proposed in this paper according to age-adjusted effective modulus method. Then, the feasibility of the proposed model is verified by the available test data from the Gilbert's composite beams. Parametric studies were preformed to evaluate the influences of the cross-sectional area ratio of the post-pouring joint to the whole bridge deck, as well as the difference of concrete age between the precast slabs and the post-pouring joint, on the long-term performance of the composite beam. The results indicate that the traditional method without considering the age difference would seriously underestimate the effect of creep and shrinkage of concrete bridge decks. The concrete age difference between the precast slabs and the post-pouring joint should be demonstrated for the life cycle design and long-term performance analysis of precast-assembled steel-concrete composite beams.

• Journal of Korean Ophthalmic Optics Society
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• 제18권3호
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• pp.247-251
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• 2013

Purpose: To analyse the addition power of new wearer of progressive addition lenses. Methods: Data of 636 subjects who have been prescribed progressive addition lenses as the first time were used for analyse. The range of age for was between 41~78 years old and they visited the optical practice in Gwangju metropolitan city from 2001 to 2013Date of refractive state, gender and age were analysed. Results: The difference of addition by gender was 1.71 D in male and 1.67 D in women. The difference of addition by refractive error was 1.67 D in emmetropic patients and 1.74 D in myopic patients, 1.90 D in hyperopic patients. The difference of addition by age was1.26 D in 41~44 years old sge group, 1.48 D in 45~49 years old age group,1.72 D in 50~54 years old age group 1.84 D in 55~59 years old age group, 2.10 D in 60~64 years old age group and 2.43 D in over 65 years old age group. The difference of addition by diopter in myopic patients was 1.58 D in low myopic patients and 1.48 D in middle myopic patients, 1.67 D in high myopic patients. The difference of addition by axis of astigmatism was 1.80 D in with-the-rule astigmatism, 1.64 D in against-the-rule astigmatism and 1.65 D in oblique astigmatism. Conclusions: The Addition power of progressive lenses were different according to the types of refractive error, astigmatism axis and age.

• Management & Information Systems Review
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• 제1권
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• pp.167-191
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• 1997

1. Today mass communication informs us of the unethical behaviors of business almost everyday and the social interest about them including individuals implicated in loss and gain grows larger. It is the real aspect that business manager and scholars do not cope with the situation. 2. Five business ethical scales as justice theory, relativism, egoism, utilitarianism, deontological theory and information ethics were applied to this thesis. 3. Hypothesis : There will he a difference in the response on five ethical scales and the recognition degree of information ethics with consumers. 4. The response on five ethical scales with the sex of consumers showed a significant difference but that with the age showed a little difference that with the academic career showed a significant difference in justice theory, relativism, utilitarianism and deontological theory 5. The recognition degree of information ethics with the age and academic career of consumers showed a significant difference and the hypothesis was accepted, but that with the sex showed a little difference.

• Journal of Korea Society of Digital Industry and Information Management
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• 제19권3호
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• pp.77-88
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• 2023

This study focuses on hotel kiosks that have begun to be introduced in earnest in mid-priced hotels, and the quality attributes of hotel kiosks, which are expected to be introduced throughout the hotel industry in the future, and validates them using a revised IPA(Importance-Performance Analysis). An online survey was conducted targeting hotel users who had used hotel kiosk devices, and difference analysis and IPA analysis were conducted on 239 people, excluding 61 who responded insincerely. As a result of the verification, there was no significant difference in hotel kiosk quality attributes by age, but there was no significant difference by age. It was found that there was a significant difference. As a result of analyzing the difference between importance and satisfaction, it was found that there was a partially significant difference. These results suggest standards for quality attributes in hotel kiosks and provide academic implications for future research and practical implications for hotel management practitioners.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.178-182
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• 2006

The purpose of this study is to find out the relationship between the lifetime housing experience and the attitudes for housing in one's old age, For this, it analyzed the characteristics of housing experience from the first housing after marriage to present housing and estimated the attitudes for housing in one's age in the future, The survey through interview has been conducted from 89 respondents with questionnaire during October to November, 2004, Frequency, Crosstabs were obtained from the collected data using SPSS/WIN program, The results were as follows, First, it was found that there was a difference in the characteristics of housing experience according to each stage of lifetime, Second, It was found that the degree of housing movements showed the difference in the housing preference in one' old age.

• Journal of Family Resource Management and Policy Review
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• 제9권2호
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• pp.127-144
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• 2005

The purpose of this study was to find out the characteristics of the exchange resources when women choose their spouse, and their marital satisfaction in accordance with those resources. For this, women under marriage of less than five years were subjected, categorized into three groups according to the age difference of the couple, and were examined the influence of the personal and parental resources when choosing their spouse on the early marital satisfaction. The results of the study were as follows: First, the personal and parental resources for each age difference of the married couple didn't have a meaningful difference in general. Second, it is shown from the characteristics of the marital satisfaction of each age difference group that there is no particular meaningful difference. Finally, when it comes to the difference in marital satisfaction in accordance with the exchange resources, the personal resources had a meaningful difference in the value field in case of having the same religion. In case both the husband and wife were the second child or younger, there was a meaningful difference in the mutual action field than there was when they were both first-born. In the emotional and the mutual action field of marital satisfaction, a meaningful difference was seen when the couple had the same kind of jobs than when wives had upper level jobs. Concerning the parental resources, a meaningful difference was shown in the mutual action field of the marital satisfaction when the parents of the both sides had the same level of scholastic attainment.

• The Journal of Korean Physical Therapy
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• 제13권2호
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• pp.373-380
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• 2001

Objectives: The purpose of this study was to compare the difference of Lumbar Lordosis Angle (LLA)between patients with Low Back Pain (LBP) and control groups. Methods: Questionnaires were completed by 40 adults LBP patients seeking physical therapy services and by 40 controls at the department of Physical Therapy, SaeJong Neurosurgical Clinic in Taegu city, South Korea from October 1999 to March 2000. LLA was measured on lateral x-ray films with standing position. The angle between a line parallel to tile top of the first Lumbar (Ll) and the top of the fifth Lumbar (L5) was defined LLA. Results: LLA of 29.88$^{\circ}$ for LBP patients was statistically significant decrease from that of 35.31$^{\circ}$ for controls in the difference of lumbar lordosis (p<0.01). There were statistically significant differences between genders in patients groups. Females(32.22$^{\circ}$) had significantly greater angles than males (27.32$^{\circ}$) (p<0.05), while 36.63$^{\circ}$ for female was also greater than 34.12$^{\circ}$ for male in the controls. No significant difference was found between age. In patient groups, 27.95$^{\circ}$ for below age 40 was a smaller than 32.32$^{\circ}$ for above, however, 35.82$^{\circ}$ for below age 40 was a little greater than 34.27$^{\circ}$ for above in controls. Patients in sitting posture had greater LLA (31.35$^{\circ}$). than those standing (28.93$^{\circ}$), however. values for controls were similar to each other. Conclusions: Results from this study indicate that distinct difference exist among patients and controls and gender, whereas little difference exists in age and working posture.

• Journal of Korean Public Health Nursing
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• 제13권1호
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• pp.88-96
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• 1999

This study was conducted in May of 1996 to December of 1996 in order to investigate the status of rubella antibodies in the women of childbearing age. The subjects were 543 fertile women (Ages 21-42 years). ELISA method was used for the detection of rubella antibodies and then questionaire survey was performed to know about the variables of past history of rubella. past rubella immunization. parity and cognition. The results were as follows: 1. The Positive rate of rubella Ig G antibody in total subjects was $65.0\%$. The positive rate of rubella Ig G antibody was $72.2\%$ in 21-25 age group. $71.4\%$ in 26-30 age group. $54.5\%$ in 31-35 age group, $52.6\%$ in 36-42 age group. As age increased, the positive rate of rubella Ig G antibody was decreased. There was statistically significant difference by age group(P=0.00l). In the subjects with a history of rubella immunization, the positive rate of rubella IgG antibody was $81.8\%$, and in those with past history of rubella was $83.3\%$ of positive rate. 2, Cognition rate about rubella immunization showed $50.8\%$ in total subjects. and there was no significant difference between parity and cognition rate of rubella immunization(P=0.85l). observed a low positive rate of rubella IgG antibody as compaired with other studies. Therefore, to prevent congenital rubella infection, rubella immunization was needed for unmarried women.