• 말소리와 음성과학
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• 제5권4호
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• pp.171-184
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• 2013

This study investigated the devoicing rate of Japanese high vowels, focusing on regional and generational differences by acoustically analyzing vowels from two large speech databases. The first speech database used in this study was collected between 1986 and 1988 from 41 areas (prefectures) which included 607 participants (299 high school students and 308 their grandparents). The second was taken from a 2006-2007 collection from seven areas as a follow-up investigation to the first database consisting of 463 participants ranging in age from 8-90 year olds. The results revealed there is a generational as well as regional difference in the devoicing rate in almost all areas. Based on those results, a new distribution map reflecting a current devoicing rate of the younger generation was presented. Furthermore, by comparing the two data sets, this study confirmed age difference in the devoicing rate is not age-grading but a sound change in progress. This study discusses the social factors for changes in the devoicing rate of some areas and then applies the devoicing rate of five areas to an S-curve model to predict the future devoicing rate.

• 한국치위생학회지
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• 제16권1호
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• pp.19-25
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• 2016

Objectives: The purpose of the study is to investigate the relationship between the number of remaining teeth and depression in Korean adults. Methods: The subjects were the respondents of the Sixth Korea National Health and Nutrition Examination Survey(KNHANES). The questionnaire consisted of the general characteristics of the subjects, number of remaining teeth, and prevalence of depression. relationship of the prevalence of depression and the number of remaining teeth. The data were analyzed by chi-square test, t-test, and logistic regression using SPSS, and 95% confidence intervals were calculated. Results: There was a significant difference in number of remaining teeth and odds ratio(OR) was 1.940(95% confidence interval: 1.062-3.544). Statistically significant difference was not observed after adjusting for age and gender and OR was 1.515(95% confidence interval: 0.823-2.787). And Statistically significant difference was not observed after adjusting for age, gender and other variables. The OR was 1.399(95% confidence interval: 0.757-2.586). Conclusions: Depression in the adults was related to the number of remaining teeth. But there was no significant difference in the number of remaining teeth after adjusted for age, gender, and other factors.

• 한국인구학
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• 제26권1호
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• pp.79-113
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• 2003

본 논문은 노령계층이 생활을 영위하는데 필요한 소득수준을 노령계층의 소득계층별로 도출해 보고자 하였다. 이를 위하여 노령계층의 소비지출이 근로연령계층에 비하여 유의미하게 차이가 있는지, 차이가 있다면 어느 정도나 차이가 있으며, 어떤 요인에 의하여 차이가 발생하는지를 분석하고자 하였다. 또한 근로연령계층의 소득수준에 대비하여 노령계층의 소비지출수준이 어느 정도인지를 분석함으로써, 노령계층의 생활을 영위하기 위하여 필요한 소득수준이 어느 정도인지를 분석코자 하였다. 특히 본 논문에서는 가구소비지출에 영향을 미치는 주요 요인인 동시에 근로연령과 노령이라는 특성상 달라지는 요인이라 할 수 있는 소득, 가구원수, 연령요인이 소비지출에 미치는 영향을 고려하여, 노령계층에게 필요한 소득수준을 소득계층별로 노령계층의 소비지출수준의 분석을 통하여 도출해 보고자 하였다. 노령계층과 근로연령계층의 소비지출간에 차이가 가장 큰 항목은 교육비이고, 교통통신비, 식료품비, 교양오락비, 피복신발비, 가구집기비, 기타소비비, 보건의료비, 주거비 순으로 나타났다. 또한, 총가구소비지출에 영향을 미치는 요인을 회귀분석한 결과, 연령이 높을수록. 소득이 높을수록. 가구원수가 많을수록 총소비지출수준이 높은 반면, 연령이 계속 증가하고(노령이 되면), 비광역시의 경우. 여성의 경우, 무직의 경우, 농어업에 종사하는 경우 총소비지출은 낮아지는 것으로 나타났다. 총가구소비지출에 영향력이 가장 큰 변수는 소득과 가구원수이며, 그 다음으로 연령인 것으로 나타났다. 또한 소득효과를 통제한 상태에서 연령효과 및 가구규모 축소효과에 의하여 부적으로 영향을 받는 소비지출은 교육비, 교통통신비, 식료품비 등 노인의 신체적 노화와 관련한 활동범위와 관련한 소프트웨어적 지출이며. 정적으로 영향을 받는 소비지출은 보건의료비였다. 또한 주거비, 가구집기비 등 하드웨어적 지출은 소득수준이 제약을 받지 않는 하에서는 연령효과 및 가구규모 축소효과로부터 중립적이었다. 본 연구결과 노인의 필요소득수준은 평균 61%수준이었다. 소득계층별로는 평균소득계층의 경우 근로연령기 소득의 60∼70% 수준이며, 저소득층의 경우는 근로연령기 소득의 90∼100% 수준이고, 고소득층의 경우는 근로연령기 소득의 50∼60% 수준으로 나타났다.

• Preventive Nutrition and Food Science
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• 제1권2호
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• pp.234-238
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• 1996

The purpose of this study was to determine whether vitamin {TEX}$B_{6}${/TEX} deficiency and age affect the blood cho-lesterol profile in exercising rats. Fifty four rats were fed either a viramin {TEX}$B_{6}${/TEX} deficient dief(-{TEX}$B_{6}${/TEX}) of a control diet(+{TEX}$B_{6}${/TEX}) for 6 weeks, then subdivided into 3 groups:non-exercise group(NE), exercise and sacrifice group(ES), exercise and recuperation group(ER). ES group was exercised in treadmill({TEX}$10^{o}${/TEX}, 0.5~0.8km/h) for 2 hours and sacrifice. ER group was recuperated three days with respective diet after exercise. At week 3 and 6, and level of plasma total cholesterol(TC), high density lipoprotein cholesterol(HDL_C) and low density lipoprotein cholesterol(LDL_C) were compared. In NE group, there was no difference in the levels of TC, HDL_C and LDL_C between +{TEX}$B_{6}${/TEX} rats and -{TEX}$B_{6}${/TEX} rats. The plasma levels of TC and LDL_C of 6 weeks were higher than those of 3 weeks and on difference in HDL_V between 3 weeks rats and 6 weeks rats. In ES group, there was also no difference in the levels of TC, HDL_C and LDL_C between +{TEX}$B_{6}${/TEX} rats and -{TEX}$B_{6}${/TEX} rats and there was no difference in TC, LDL-cholesterol between 3 weeks rats and 6 weeks rats. The level of HDL_C pf 6 weeks was lower than that of 3 weeks rats. In ER group, there was no difference in the levels of TC and LDL_C not only between +{TEX}$B_{6}${/TEX} rats and-{TEX}$B_{6}${/TEX} rats but also between 3 weeks rats and 6 weeks rats. The level of HDL_C was lower in -{TEX}$B_{6}${/TEX} rats than in +{TEX}$B_{6}${/TEX} rats and higher in 6 weeks rats than in 3 weeks rats. These results suggest that vitamin {TEX}$B_{6}${/TEX} deficiency may affect the HDL_C during exercise and after recuperation. The desirable effect of exercise on plasma Cholesterol profile is strengthened in adult age than young age.

• 산업경영시스템학회지
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• 제40권2호
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• pp.1-12
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• 2017

The competition to acquire customers with repurchase intention is getting more and more intense in the saturated smartphone market. That is why the aim of this study is to investigate the difference in purchasing determinants between various age groups and gender. Furthermore we aimed to analyze which of the purchasing determinants influence repurchase intention. In order to gather information we conducted a survey on 252 respondents. We selected 5 purchasing determinants (A/S, H/W, switching cost, network effect and design) by conducting factor analysis and validity analysis. Then we analyzed how respondents of different age groups and gender perceived different purchasing determinants and analyzed the influence purchasing determinants have on repurchase intention. As for analyzing the difference of purchasing determinants throughout various age groups, the H/W, A/S, network effect showed a notable difference. The older respondents tended to consider H/W, A/S, network effect more importantly than younger respondents. When it came to comparing the results depending on the gender, male respondents tended to consider H/W factor more importantly compared to female respondents and the opposite was true for other factors such as A/S, switching cost, design, and network effect but there weren't any significant differences. Finally, out of various determinant factors, network effect and design turned out to have a considerable influence on repurchase intention. That is why it would be highly appropriate to say that if a company intends to boost repurchase intention, enhancing network effect and developing an effective design would be crucial. This study differs from other existing researches in that we analyzed respondents from different age groups and gender separately. Also unlike other researches we directly analyzed the influence purchasing determinants have on repurchase intention not customer satisfaction. This study is expected to serve as basic information that can be used to establish strategies both in an academic and practical level, allowing companies to boost the repurchase intention of the smartphone market.

• 대한스포츠의학회지
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• 제36권4호
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• pp.189-196
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• 2018

Purpose: The purpose of this study was to compare the difference of body mass index (BMI) to smart phone proficiency in men and women over the age of 60. Methods: Patients were divided into three groups with high (n=33), average (n=34), and low (n=33) smart phone proficiency. Fitness characteristics related to smart phone usage were evaluated by measuring cardiorespiratory endurance, grip strength, eye-hand coordination. As well, smart phone proficiency was evaluated by a self-reported questionnaire and a smart phone usability task that was composed of two categories: usage of the smartphone device itself and usage of phone applications. The differences in BMI of the subjects was analyzed by analysis of covariance adjusting for independent variables including age, smartphone usage period, eye-hand coordination, education and income. Results: There was a significant difference in BMI among the three groups after adjustment of age, eye-hand coordination, smartphone usage period, education and income. The results showed that the self-reported questionnaire showed a significant difference in BMI between high proficiency and low proficiency groups (high $24.88{\pm}2.46$, low $23.37{\pm}2.56$; p=0.037). Smart phone usability test results also showed a significant difference in BMI among the three groups (high $25.18{\pm}2.58$, low $23.15{\pm}2.6$; p=0.000 and high $25.18{\pm}2.58$, middle $23.57.7{\pm}1.69$; p=0.010). Conclusion: Our results suggest that high smart phone proficiency shows increased BMI in the elderly. This study suggests that people over the age of 60 who have high smartphone proficiency should be cautious of an increased BMI score.

• 분석과 대안
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• 제6권1호
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• pp.7-33
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• 2022

본 논문은 통일에 대한 찬성-반대 응답을 바탕으로 수도권(서울, 인천, 경기) 거주 시민의 통일 의식에 연령대별 차이의 양태를 고찰하였다. 기존 연구에서는 통일에 대한 찬성 의견이 연령과 양의 선형관계에 있다고 보고 있다. 하지만 본 연구의 분석 결과에 따르면, 수도권의 통일에 대한 찬성 의견은 연령의 증가와 함께 증가하지만 44세~ 53세 층에서 가장 높은 찬성 비율을 보인 후 점차 감소하는 것으로 나타났다. 통계모형 분석에서 44 ~ 53세층은 참조집단인 24 ~ 33세층에 비해 승산이 2.5배 이상 높았으며, 남성에 대한 여성의 승산은 0.56배로 나타났다. 한편, 연령별 통일 찬성 비율 평균값의 추세선 기울기 기준으로 연령 증가에 따른 통일 찬성 비율 증가 경향은 남성이 여성보다 약 4.3배 더 큰 것으로 나타났다. 남성 청년층(2030)과 중년층(4050) 간의 현저한 통일 찬성 비율의 차이가 수도권 전체 연령대의 통일 찬성 비율 격차에 영향을 미치는 것으로 보인다.

• 대한수의학회지
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• 제28권2호
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• pp.307-310
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• 1988

This experiment was carried out to provide the data of blood chemistry in use of application to clinical diagnosis in racehorses. Blood was collected from 30 racehorses(♀ 17, ♂ 13). Calcium, inorganic phosphorus, blood glucose, blood urea nitrogen, cholesterol, bilirubin, fibrinogen and ketone body in serum were analyzed as follows. 1. The values of calcium and inorganic phosphorus were maintained a certain level without much variation regardless of sex and species, Ca/P ratio was in the range of 3.13~3.35. 2. The value of blood glucose was 60 mg/100ml, Age and sex of racehorses make no difference in the value. 3. The value of blood urea nitrogen and total cholesterol showed a tendency to increase according to the age. Total cholesterol value was somewhat higher in male than in female. 4. The value of total bilirubin showed a tendency to increase according to the age. There was no difference between sexes in the value. 5. The value of fibrinogen showed no apparent difference with age and sex. 6. Ketone body was negative in all of the cases. 7. There was no variation in the species of the racehorses.

• 음성과학
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• 제15권4호
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• pp.171-188
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• 2008

This study was purposed to introduce Korean Oro-motor Mechanism Screening Examination (KOMSE) and to provide the standardized scores taken from 120 normal adults aged $18{\sim}59$. KOMSE was composed of 13 items of structure, 17 items of function, 3 items of voice, and 14 items of regularity and accuracy of articulation during diadochokinesis. Additionally, maximum phonation time and diadochokinetic rates were measured. Total score of KOMSE is ranged from 0 to 200. It was significantly higher in the $50{\sim}59$ age group than in the $20{\sim}29$ age group, but was not significantly different in sex. MPT had a significant difference in sex, but no significant difference among different age groups. The rate of DDK was also had no significant difference among different age groups. However, some reducing trend in the rate of DDK was observed as age increased. KOMSE would be very helpful for SLPs to screen the abnormality of oro-motor mechanism.

• Journal of Oral Medicine and Pain
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• 제22권1호
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• pp.157-165
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• 1997

This study was carried out to examine the correlationship among incidence, frequency, loudness, and the related predisposing factors about snoring through epidemiologic investigations. Questionaires were used for a clinic-visitor who is irrelevant to snoring, and investigated by sex, age, body mass index(below BMI), and occupation. The subjects were grouped by age; below twenties, twenties, thirties, forties, fifties, sixties, and over sixties. On using BMI, the subjects were divided into two groups; overweighed and non-overweighed group. And the occupation were simplified to two groups; physical labors and mental labors. An statistical analysis was perfomed about correlation to whether to snoring or not, its frequency, loudness and the related predisposing factors. The results were obtained as follows : 1. Snorers were commanded as 5.1% of all clinic-visitors. Male was dominant to female (p<0.01). The number of snorer was increased with age(p<0.05) and overweighed group showed higher incidence than in non-overweight group(p<0.01). 2. There was no significant difference between occupation groups in incidence of snoring. 3. In case of the frequency of snoring in snoring group, there was significant increase in male, overweighed and mental labors group(p<0.01). But, there was no difference with age. 4. In case of loudness of snoring in snoring group, male, overweihged and mental labors had louder noise than in other contrary group. But there was no difference with age. 5. For the related predisposing factors to snoring, fatigue was the highest(74.4%), and alcoho and drug were followed.