• Journal of Technologic Dentistry
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• v.32 no.4
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• pp.387-401
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• 2010

Purpose: The work of Dental technician which is part of national dental health, is more specialized recently. This research provides fundamental data from analyzing student's career consciousness according to needs of a career education. Here is the conclusion of the analysis about student's career consciousness, that is for a right choice of career. Methods: This study did questionnaire to a dental Laboratory Technology student who locate in Taegu. Question response student number was 570 people. Response contents analyzed to 506 people except imperfect questionnaire. Data used windows sas 8.0 program and did descriptive statistical analysis. Results: There is a meaningful difference in what they want to know about an occupation according to ages. (${\rho}$ < 0.01) All ages are similar to their occupational thinking, however they who are under twenties consider working environment. Most motives of an entrance are similar, there is a meaningful difference. (${\rho}$ < 0.05) According to a grade of college, there is a meaningful difference how to obtain informations of a career. (${\rho}$ < 0.05) Sophomores and juniors obtain information from seniors or family, however freshmen obtain from the internet because of an accessibility. There is a meaningful difference of a job meaning between men and women. (${\rho}$ < 0.01) Men are working for a means of living. But women give weight to a self-development. The older they grow, the more they know about their aptitude. Selecting subjects are different choosing time & motive. According to ages and where they are from, there is a meaningful difference how much know about their aptitude. (${\rho}$ < 0.05) Older Students know more than young students. Selecting subjects are different choosing time & motive. In accordance with a grade, ages, and where they are from, there are different degrees about how much know their interests. There is a meaningful difference of a choosing major period and choosing informations. (${\rho}$ < 0.01) And also there is a meaningful difference where they are from and why they enter to College. (${\rho}$ < 0.001) In accordance with a grade, ages, and where they are from, there are different degrees about how much know their aptitude. There is a meaningful difference of a choosing major period. (${\rho}$ < 0.01) And also there is a meaningful difference why they enter to College. (${\rho}$ < 0.001) Conclusion: Although we know that a career education is very important, however lots of students select a career without their aptitude & interest & character. We need to teach a career education systematically; considering students career consciousness, with a proper career guidance, cultivating career consciousness.

• Journal of The Korean Astronomical Society
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• v.22 no.1
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• pp.43-61
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• 1989

The ages of field stars given in the catalogue of Cayrel de Strobel et al. (1985) are derived by the five different methods with combination of theoretical isochrones. By using these ages and metal abundances homogenized by Lee and Choe (1988), the age-metallicity relations are obtained. For disk stars of [Fe/H] > -0.9, the present age-metallicity relations are nearly consistent with those given by Twarog (1980) and Carlberg et al. (1985).

• Korean Journal of Human Ecology
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• v.9 no.1
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• pp.25-42
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• 2006

The purpose of this study was to investigate how the married middle-aged married men and women describe their own gender-role attitude, mid-life crisis and psychological adjustment, including search components as both middle-aged men and women's income, and education with occupation. Psychological adjustment was composed of mid-life crisis, depression, and perceived happiness, These data were collected from 397 married, middle aged men and women from 40 years to 59 years-old by using self-administered questionnaire method, The summarized results of the study are as follows: First of all, the middle-aged men's gender-role attitudes were more traditional gender-role attitudes 'than of women's. Second, in general characteristic, the men were different according to education, However, the women's gender-role attitudes were different according to ages, a period of marriage, education, income, and occupation. Third, in psychological adjustment, the men had significant differences in income. And, the women had significant differences in ages, a period of marriage, education, income, and occupation. Finally, the men and women's gender-role attitudes were positively correlated with mid-life crisis and depression, and were negatively correlated with happiness. And, the women's gender-role attitudes were positively correlated with psychological adjustment.

• Asian-Australasian Journal of Animal Sciences
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• v.2 no.1
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• pp.17-21
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• 1989

Four seasonal trials were conducted to study the effect of feeding clomiphene citrate on carcass composition of broilers. It was fed at 5, 10, 15 mg levels per kg feed for a period of two weeks, 3-4 weeks ($S_1$), 4-5 weeks ($S_2$) and 5-6 weeks ($S_3$) of age. Total carcasses were analysed for moisture, ether extract and protein. Clomiphene citrate significantly decreased the moisture with concomitant increase in ether extract content of the carcasses at all the ages and seasons. Carcass protein was significantly decreased at all the ages and seasons. The responses in the different level of clomiphene citrate is dose dependent. The carcass moisture decreased with age while protein and ether extract contents increased in all seasons. The females had more ether extract and less moisture contents than male. The carcass ether extract was higher in summer and rainy seasons followed by spring and winter seasons, and the differences were significant. A concomitant significant decrease of carcass moisture was observed. The effect of seasons on carcass protein varied at different ages but there appeared to be a trend towards decreasing carcass protein in summer and rainy seasons than winter and spring seasons.

• Journal of the Korean Society of Food Culture
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• v.14 no.3
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• pp.225-231
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• 1999

Perception and knowledge on the diet among 651 women living in Inchon were surveyed by questionnaires in March through May, 1998. Respondents consisted of middle school girls(12.3%), high school girls(16.4%), and women in twenties(16.4%), thirties(18.9%), forties(15.7%) and fifties and over(20.3%). Ratio of high school graduates was the highest(37.0%) among respondents, and there was a tendency of less education with ages. Seventy-six percent of women practised the diet for the self-satisfaction of a nice figure, 20% for healing diseases, and 3.4% for attracting boy friends' or husbands' attention. The purpose of the diet was significantly different with ages(p<0.01). The diet methods which the respondents perceived effective and wanted to practise were exercise and food therapy. Average score of the knowledge on the diet was 8.27 out of 10, and significantly different with ages and education(p<0.05). Twenties showed the highest score and high school girls, thirties, middle school girls, forties and fifties and over were followed in decreasing order. Also the score was in decreasing order of graduates of college, high, elementary and middle school.

• Clinical and Experimental Reproductive Medicine
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• v.13 no.2
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• pp.195-200
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• 1986

In order to know when the cumulus cells of mouse follicles get ability to expand in vitro, the oocyte cumulus complexes obtained from different growing ages of mice were cultured in the medium containing HCG and their rate of expansion were observed and at the same time their maturation rate was examined. The growth of follicles was also checked by histological method. It was impossible to isolate the oocyte-cumulus complexes from 13 or 15 days old mouse ovaries. The oocyte-cumulus complexes collected from 17 days old mouse were partially induced to expanded by HCG, and from 19 days, most of the complexes were induced to full expansion. The rate of cumulus cell expansion by HCG and the oocyte maturation increased steadly during the growing ages to adult. Thus, the time for follicles to get competence for expansion and maturation seems to be closely related. Antral follicles were appeared from 17 days old mice and Graafian follicles were seen from 21 days old mice. The competence for cumulus expansion increased during follicle growth up to 21 days old mice.

• Speech Sciences
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• v.13 no.2
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• pp.59-72
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• 2006

In the present study, we investigated the grammaticality judgement skills of children with developmental language impairments. The participants included 20 children with language impairments of ages ranging from 7 to 9 years and of IQ's ranging from 71 to 84, and 40 normally developing children. Twenty normal children were matched with the language impaired children in their language ages and the other 20 normal children were matched with the language impaired children in their chronological ages. The children were asked to judge the grammatical correctness of 48 short sentences, half of which were ungrammatical sentences containing incorrect case-markers and the other half were grammatically correct sentences. Four types of case-markers including nominative "i/ga", accusative "ul/lul", locative "e," and instrumental "ro" were systematically changed to generate the ungrammatical sentences. The language impaired children performed worse than both groups of normally developing children in detecting the ungrammatical sentences and in correcting the case-markers of those sentences. In detecting the errors of ungrammatical sentences, the language impaired children exhibited variable performances across the different case-markers.

• Journal of the Korean Home Economics Association
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• v.31 no.1
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• pp.45-60
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• 1993

The purpose of this study is evaluate by using ready prepared question-naires consist of items including perceived stressors. locus of control and distress to classify the different characteristics due to occupations and ages. The sampling groups ranges from 20 generations to 50 generations employed wives living with husband and children dwelling in Seoul. Finally, the sampling data used in this study are the number of 412. The major findings are as follows; (1) All employed wives feel less perceived stressors but more perceived stressors for insufficient understanding of their childrens, overload of housework, willingness of stop of employment by their parents of both families, economic expenditures, and various problems in work places. (2) There appear signigicant differences for perceived stressors and mental and physical distress due to the occupations and the ages of employed wives. Otherwise the locus of control appear clear differences due to the ages only. The more perceived stressors and mental and physical distress appear for laborious and service occupation than professional and administrative occupation. (3) The variables related to physical distress and mental distress are occupation, age, martial status and work allocation of housework, relationship childrens and relationship kinship.

• Structural Engineering and Mechanics
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• v.76 no.5
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• pp.591-598
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• 2020

Ultrasonic waves provide a non-destructive and sensitive way to monitor the concrete hydration. However, limited works are reported to monitor the evolution of the mechanical parameter at early ages. In this study, modified piezoelectric aggregates are embedded inside a concrete beam to excite and receive primary waves. A hydration index, namely, the variation of ultrasonic waveform (VUW) is developed to characterize the variation of the transmitted waves during the hydration process. The recorded hydration indices are compared with the compressive strength measured by destructive test at different ages. The results show that the VUW is closer to the compressive strength than the other two traditional hydration indices, ultrasonic velocity and wave packet energy. The proposed VUW provides a simple and accurate way to monitor the concrete hydration at early ages.

• Korean Journal of Pharmacognosy
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• v.43 no.4
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• pp.338-344
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• 2012

Advanced glycation end products (AGEs) have been postulated to play a central role in the development of diabetic complications. A variety of different agents that inhibit AGEs have been under investigation. In this study, 62 herbal medicines from China and Vietnam have been investigated with an in vitro evaluation system using AGEs formation inhibitory activity. Of these, 5 herbal medicines ($IC_{50}$ < $5{\mu}g/ml$) were found to have significant AGEs formation inhibitory activity. Particularly, herbal medicines Albizia odoratissima (twigs and leaves), Rhododendron spinuliferum (twigs and leaves), Dioscorea cirrhosa (stems and leaves), Illicium verum (stems and leaves) and Aglaia perviridis (stems and leaves), showed more potent inhibitory activity (approximately 16-26 fold) than the positive control aminoguanidine ($IC_{50}=76.47{\mu}g/ml$).