• Journal of Astronomy and Space Sciences
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• v.20 no.4
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• pp.283-298
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• 2003

The 2001 Leonid meteor storm has been observed all over the world, and its most intense flux since the last few decades has caused great interest among both laymen and experts. Especially, its maximum hours occurred at dawn hours of Nov. 19 in the east Asia, during which moonless clear night at the Mt. Bohyun allowed us near perfect condition of observation. Observation was carried out in the period of 01:00∼05:40(KST), which include the predicted maximum hours, with all-sky camera installed for upper atmospheric airglow research. Tn this paper we analyze 68 all-sky images obtained in this period, which contain records of 172 meteors. Utilizing the zenith hourly rate(ZHR) of 3000 and magnitude distribution index of 2, which were reported to International Meteor Organization by visible observers in the east Asia, we estimate the limiting magnitude of about 3 for meteors detected in our all-sky images. We then derive magnitudes of 83 meteors with clear pixel brightness outlines among the initially detected 172 meteors by comparing with neighbor standard stars. Angular velocities of meteors needed for computing their passing times over an all-sky image are expressed with a simple formula of an angle between a meteor head and the Leonid radiant point. The derived magnitudes of 83 meteors are in the range of -6∼-1 magnitude, and its distribution shows a maximum new -3mag. The derived magnitudes are much smaller than the limiting magnitude inferred from the comparison with the result of naked-eye observations. The difference may be due to the characteristic difference between nearly instantaneuous naked-eye observations and CCD observations with a long exposure. We redetermine magnitudes of the meteors by adjusting a meteor lasting time to be consistent with the naked-eye observations. The relative distribution of the redetermined magnitudes, which has a maximum at 0 mag., resembles that of the magnitudes determined with the in-principle method. The relative distribution is quite different from ones that decrease monotonically with decreasing magnitudes for meteors(1∼6) sensitive to naked-eye observations. We conclude from the magnitude distribution of our all-sky observation that meteors brighter than about 0 mag., appeared more frequently during the 2001 Leonid maximum hours. The frequent appearance of bright meteors has significantly important implication for meteor research. We noted, however, considerably large uncertainties in magnitudes determined only by comparing standard stars due to the unknown lasting time of meteors and the non-linear sensitivity of all-sky camera.

• Journal of Sasang Constitutional Medicine
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• v.11 no.1
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• pp.103-117
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• 1999

1. Background and Purpose : Sasang Constitutional medicine is baon dividing individuals' constitutions into four categories. Determination of an individual's constitution, however, can be different according to who he or she consults with since it depends solely on the examiner's own perception and methods. Currently, the use of self-reporting questionnaires is accepted as a general approach in clinical settings, but the results of different questionnaires tend to be inconsistent. In this study, we investigated how different the results of the questionnaires are and what the inter-questionnaires agreement is. 2. Method : 1595 peoples who volunteered our research from 1997 to 1999 and were evaluated disease free were asked to mark out three questionnaires: Sasang Pattern Identification Questionnaire, QSCC I and QSCCII(QSCC I was completed by 348 patients only). 3. Results and Conclusions : Three questionnaires above produced different results as excepted. In Sasang Pattern Identification Questionnaire, the Soeumin accounted for 55.9%. With the modified version of Sasang Pattern Identification Questionnaire, the Taeumin was the majoriy(39.1 %) and, QSCCII also showed similar results(34.8% of Taeumin). In contrast, the QSCC I revealed the majority consisted of the Soyangin (59.1 %). In terms of analysis on inter-questionnaire agreement, Sasang Pattern Identification Questionnaire and its modified version showed the highest agreement of 66.3, followed by 55.6% of QSCCII and the modified version from Sasang Pattern Identification Questionnaire. Therefore, we concluded that the ideal choice to determine an individual's constitution, as far as questionnaires go, is to take results from both the modified version from Sasang Pattern Identification Questionnaire and QSCCII. We found the use of QSCC I can be confusing to reach a satisfactory agreement.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.11 no.1
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• pp.110-123
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• 2000

The short-term music therapy was performed for adolescents with conduct disorder admitted to Seoul National Mental Hospital for 3 months from Jun to September, 1998. This case study focused mainly on two female patients who participated regularly in the group music therapy. The music therapy process was divided into three phases；beginning, opening up, and closing. This music therapy session consisted of three parts；hello song as beginning, various musical activities, and sound & movement activity as closing. Free musical improvisation, song discussion, musical monodrama, and sound & movement were the mainly applied techniques. Free improvisation was used to enhance, motivate, identify and contain the adolescents' feelings and ideas. Song discussion was used to convey their thoughts and to support each other. Musical monodrama was used to make them have insights into interpersonal relationships. Sound & movement was used to enhance spontaneity. It made them explore their body and voice as an expressive medium. Throughout three months period of music therapy, patient A's communication skill, socialization, and behavior areas were assessed with improvement. She could use music as a symbolic form and was able to share her feelings about herself and her family. Patient B's self-expression and cognitive areas were assessed with improvement. She became more spontaneous and could verbalize her emotions during the group session. Music as a non-verbal and therefore often a non-threatening medium wherein so much can be expressed provided two female patients an atmosphere where a sense of trust may be regained.

• Journal of dental hygiene science
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• v.5 no.4
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• pp.245-250
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• 2005

This study was executed from June first to 30th. 2005. The target was first and second graders of Bok-Hyun elementary school and their mothers. The total of participants was 275 persons and the component ratio was 135 first graders and 140 second graders, also 82 boys and 193 girls. They answered to the question sheet by writing out with their own hands. Among the 300 question sheets that were answered, 275 sheets were analyzed, excepting 25 sheets that got poor answer. The results were as follows; (1) About the behavior of mothers and their children for oral health, In mothers' case, 68.8% of them answered that they brush teeth more than 3 times a day and 31.3% answered that they brush teeth less than 2 times a day, so those who brush teeth more than 3 times were more than those who brush teeth less than 2 times In children's case, on the contrary, 14.2% of them answered that they brush teeth more than 3 times a day and 85.8% answered that they brush teeth less than 2 times a day, so those who brush teeth less than 2 times were more. (2) In 7 questions for researching mothers' knowledge level about fluorine, 55.3% of them answer 3~4 questions correctly. In 7 questions for researching mothers' knowledge level about Periodontal disease, 47.3% of them answer 3~4 questions correctly and it was highest. (3) In a case of the relation between oral health knowledge and behavior of mother and frequency of brushing teeth of children, statistical similarity on frequency of brushing teeth was shown(p < 0.05). (4) In a case of the relation between social-anthropological features of mother and frequency of brushing teeth of children, there was no statistical similarity on age, mothers' educational level, monthly income. However, statistical similarity was shown about existence of mothers' occupation(p < 0.05).

• Journal of dental hygiene science
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• v.11 no.1
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• pp.1-6
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• 2011

The purpose of this study was to offer information in order to induce and practice forming right oral health habit by grasping oral health practice according to subjective oral health interest and recognition in Academic Boys' High School students. Targeting students of Academic Boys' High School where is located in Jeollabuk-do from May 20, 2010 to June 20, the self-administered questionnaire survey was carried out by convenience sampling. The following are the results that the collected data was carried out statistical analysis by using SPSS 12.0 program. 1. Among factors of oral health practice according to oral health interest level, toothbrushing was the highest with 3.89 points. It was in order of education and interest with 3.18 points, diet control with 2.93 points, a regular visit with 2.69 points, and the practice of oral hygiene device with 2.12 points. 2. Among factors of oral health practice according to subjective oral health recognition level, toothbrushing was the highest with 3.89 points. It was in order of education and interest with 3.17 points, diet control with 2.93 points, a regular visit with 2.69 points, and the practice of oral hygiene device with 2.12 points. 3. In correlation between subjective oral health recognition level and oral health practice factor, the more recognition of being healthy in the subjective oral health recognition level led to the higher oral health practice level(p<0.01). 4. As for influence of oral health practice factor upon subjective oral health recognition level, the subjective oral health recognition was high in a group of practicing toothbrushing(p<0.01) and of visiting dental clinic regularly(p<0.05).

• Journal of dental hygiene science
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• v.11 no.1
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• pp.23-30
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• 2011

The purpose of this study was to examine the utilization of oral health education media among dental hygienists in charge of oral health education. The findings of the study were as follows. 1. In regard to the general utilization of educational media in possession by workplace, age and career, the dental hygienists who worked in public health clinics(42.4%), who were in their 40s and up(341.%) and whose career was six years or more(32.2%) made more use of the educational media. Those who didn't use the educational media cited time constraints as the most common reason(46.1%). 2. Models(53.2%) were highly preferred in most of the institutions where the dental hygienists worked, but the public health clinics(81.8%) and university hospitals(80.0%) were most fond of video clips. 3. Concerning preference for educational media by career, the dental hygienists whose career was between three and less than six years and who had a 10 years or more of career had the most liking for video clips, followed by models. Those whose career was between one to less than three years and between six and less than 10 years showed the most preference for models, followed by video clips. 4. As for their perception of the necessity of educational media, the majority felt the need for the media(87.5%). Regarding difficulties in purchasing necessary educational media, the biggest group pointed out a shortage of information(56.1%).

• Journal of dental hygiene science
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• v.9 no.1
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• pp.9-15
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• 2009

Aimed at office workers at their height of Temporomandibular joint disorder(TMD), organized self-filling questionnaires were distributed from January 7 to 26, 2008 to 216 workers in the fields of service, office work, and production in D metropolitan city, to get a proper recognition about prevention and treatment of TMD by observing how strongly occupational stress influence on them. The findings of the study were as follows: 1. For subjective symptoms of joint noise as TMD, occasional was 45.8% and often 12.0%, while for joint dislocation often was 12.0%. 41.2% said they feel pains while chewing, while 24.1% said they occasionally feel pains while not chewing. 2.8% said they often experience mouth-opening disorder. 2. For joint noise, answers were significantly different according to their ages, while 30's are at their height (P < 0.05). For joint dislocation, the shorter they worked the more they have it, so less than a year worker was 37.9%, while less than 3 years 31.0%, and less than 5 years 20.7%. For work type, daytime workers have more dislocation, 58.6%, than shift-workers 34.5% (P < 0.05, P < 0.01). For pains while chewing, the shorter they worked, the more they experienced, which is the same as mouth-opening disorder (P < 0.01). 3. Workers with mouth-opening disorder have much stress on occupational autonomy (P < 0.05) and workers with dislocation and pains while chewing have much stress on relation trouble (P < 0.05, P < 0.01). Workers with highly occupational insecurity has much trouble on dislocation and pains while chewing, while workers with dislocation have significantly much stress on unproper compensation (P < 0.05). 4. For who have joint dislocation, they have much stress on relation-trouble, occupational disorder, and un-proper compensation (P < 0.01, P < 0.05). Workers with pains while not chewing showed significant difference about occupational insecurity and relation troubles (P < 0.05, P < 0.01). Who have mouth-opening disorder showed significant difference about occupational autonomy (P < 0.05).

• Journal of dental hygiene science
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• v.9 no.1
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• pp.129-136
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• 2009

The purpose of this study was to examine the infection control attitude of dental hygienists and the relationship between their attitude and general characteristics. The subjects in this study were 235 dental hygienists who received local in-service education on April 27, 2008. The survey was conducted by this researcher with questionnaires that included 11 items about general characteristics and 41 about attitude of dental infection. The findings of the study were as follows: 1. The dental hygienists investigated got a mean of 2.96 out of possible three points on hand washing, which was a high score. Those who had never been exposed to the blood of patients scored better than the others who hadn't. As for infection control attitude of protective personal devices, they got 2.01 out of possible three points. Those who were at the age of 26 to 30 and who had ever received infection control education got better scores. 2. Concerning attitude toward surface disinfectant, they got 1.95 out of possible three points. whose age was shorter, whose career was shorter, who were in charge of treatment, who served at general hospitals and who had ever received infection control education got better scores. In regard to attitude to surface disinfection methods, they got 1.83 out of possible three points. Those who had ever received infection control education got better scores. 3. As for equipment disinfection, they got 2.43 out of possible three points. Those who worked at dental hospitals and who had ever received infection control education got better scores. Concerning attitude to disposal of scrapped materials, they got 2.92 out of possible three points, and all the intergroup gaps weren't significant. 4. Overall, the dental hygienists got a mean of 2.08 out of possible three points on dental infection control, and those who worked at dental hospitals and who had ever received infection control education took a better attitude to dental infection control.

• Journal of dental hygiene science
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• v.9 no.1
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• pp.61-67
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• 2009

The purpose of this study was to examine the relationship between the lifestyle of dental consumers and their hospital satisfaction level in an attempt to lay the foundation for successful dental marketing strategy setting. The subjects in this study were 720 medical consumers who visited dental institutions in Jeolla buk-do province. A survey was conducted from October 1 to December 1, 2006, with self-administered questionnaires. The collected data were analyzed with SPSS(Statistical Package for the Social Science) 12.0 program to find out their lifestyle and hospital satisfaction level. Concerning the impact of lifestyle on satisfaction with dental institutions, lifestyle made a difference to the satisfaction level of the hospital users with promptness and economicality(p < 0.001). As to connections between hospital-reuse intention and satisfaction level, those who were willing to reuse the dental institutions they had visited expressed better satisfaction with promptness(p < 0.05). As for links between health-related lifestyle and hospital satisfaction level, health conscious style, health promoting style health unconscious styles had a statistically significantly positive relationship to hospital satisfaction level, which showed a significant relationship between the three lifestyles and hospital satisfaction level. As for factors affecting reuse of dental institutions, it's found that their intention to reuse the same dental institution they had visited was linked to their satisfaction level with it, what made them choose it and their health-related lifestyle. In the future, more precise and in-depth questionnaires should be developed to analyze the health-related lifestyle of medical consumers.

• Journal of dental hygiene science
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• v.14 no.4
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• pp.571-579
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• 2014

This study was conducted to provide basic data for improvement of the oral health management ability and the factors affecting oral health recognition and practice of 6th graders. The research subjects total 259 numbers of 6th grade students in two schools located in Changwon, it was investigated and analyzed with structured questionnaires. The collected data is analyzed by using IBM SPSS Statistics 19.0. The average oral health recognition score investigated were $3.19{\pm}0.41$, and $2.95{\pm}0.43$ for oral health practices. The oral health recognition was statistically significant differences by father's education (p<0.01), perceived oral health status (p<0.01), perceived grade (p<0.01), intention to attend oral health education (p<0.001). The oral health practices was statistically significant differences by father's education (p<0.01), perceived oral health status (p<0.001), perceived grade (p<0.05), parent's interest in child's toothbrushing (p<0.01), experience of oral health education (p<0.001), intention to attend oral health education (p<0.05). The factors that may improve the oral health recognition are in order of oral health practices, intention to attend oral health education, and parent's attention to child's tooth brushing. The factors that may improve the oral health practice was found to be in order of oral health recognition, parent's attention to child's tooth brushing, and perceived oral health status. As a result, in order to improve oral health management ability of 6th grade students, the surrounding environment, the attitude on oral care, the interest of oral, and the current disease status of oral health are required to be identified, then the oral health education program should be provided.