• Imaging Science in Dentistry
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• v.45 no.1
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• pp.15-22
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• 2015

Purpose: This study was performed to assess the reproducibility of identifying the sella turcica landmark in a three-dimensional (3D) model by using a new sella-specific landmark reference system. Materials and Methods: Thirty-two cone-beam computed tomographic scans (3D Accuitomo$^{(R)}$ 170, J. Morita, Kyoto, Japan) were retrospectively collected. The 3D data were exported into the Digital Imaging and Communications in Medicine standard and then imported into the Maxilim$^{(R)}$ software (Medicim NV, Sint-Niklaas, Belgium) to create 3D surface models. Five observers identified four osseous landmarks in order to create the reference frame and then identified two sella landmarks. The x, y, and z coordinates of each landmark were exported. The observations were repeated after four weeks. Statistical analysis was performed using the multiple paired t-test with Bonferroni correction (intraobserver precision: p<0.005, interobserver precision: p<0.0011). Results: The intraobserver mean precision of all landmarks was <1 mm. Significant differences were found when comparing the intraobserver precision of each observer (p<0.005). For the sella landmarks, the intraobserver mean precision ranged from $0.43{\pm}0.34mm$ to $0.51{\pm}0.46mm$. The intraobserver reproducibility was generally good. The overall interobserver mean precision was <1 mm. Significant differences between each pair of observers for all anatomical landmarks were found (p<0.0011). The interobserver reproducibility of sella landmarks was good, with >50% precision in locating the landmark within 1 mm. Conclusion: A newly developed reference system offers high precision and reproducibility for sella turcica identification in a 3D model without being based on two-dimensional images derived from 3D data.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.37 no.6
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• pp.457-463
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• 2011

Introduction: This study evaluate the soft tissue changes to the upper lip and nose after Le Fort I maxillary posterosuperior rotational movement. Materials and Methods: Twenty Skeletal class III patients, who had undergone bimaxillary surgery with a maxillary Le Fort I osteotomy and bilateral sagittal split ramus osteotomy, were included in the study. The surgical plan for maxilla was posterosuperior rotational movement, with the rotation center in the anterior nasal spine (ANS) of maxilla. Soft and hard tissue changes were measured by evaluating the lateral cephalograms obtained prior to surgery and at least 6 months after surgery. For cephalometric analysis, four hard tissue landmarks ANS, posterior nasal spine [PNS], A point, U1 tip), and five soft tissue landmarks (pronasale [Pn], subnasale [Sn], A' Point, upper lip [UL], stomion superius [StmS]) were marked. A paired t test, Pearson's correlation analysis and linear regression analysis were used to evaluate the soft and hard tissue changes and assess the correlation. A P value <0.05 was considered significant. Results: The U1 tip moved $2.52{\pm}1.54$ mm posteriorly in the horizontal plane (P<0.05). Among the soft tissue landmarks, Pn moved $0.97{\pm}1.1$ mm downward (P<0.05), UL moved $1.98{\pm}1.58$ mm posteriorly (P<0.05) and $1.18{\pm}1.85$ mm inferiorly (P<0.05), and StmS moved $1.68{\pm}1.48$ mm posteriorly (P<0.05) and $1.06{\pm}1.29$ mm inferiorly (P<0.05). The ratios of horizontal soft tissue movement to the hard tissue were 1:0.47 for the A point and A' point, and 1:0.74 for the U1 tip and UL. Vertically, the movement ratio between the A point and A' point was 1:0.38, between U1 tip and UL was 1:0.83, and between U1 tip and StmS was 1:0.79. Conclusion: Posterosuperior rotational movement of the maxilla in Le Fort I osteotomy results in posterior and inferior movement of UL. In addition, nasolabial angle was increased. Nasal tip and base of the nose showed a tendency to move downward and showed significant horizontal movement. The soft tissue changes in the upper lip and nasal area are believed to be induced by posterior movement at the UL area.

• The Journal of the Korea Contents Association
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• v.11 no.9
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• pp.335-351
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• 2011

The purpose of this study was twofold; one was to investigate the elderly people's educational needs on successful aging(Study 1), and the other was to construct the educational program for successful aging and evaluate its effectiveness(Study 2). For Study 1, data were collected with structured questionnaires from the 166 elderly people participating in the government job creation projects for the aged in Gwangju and analyzed using frequency analysis and means-of-different tests. It was found that most of the elderly people strongly desired the education successful aging in terms of health care, finance, social participation, leasure, social network and self acceptance. In Study 2, the educational program for successful aging was constructed based on the results of Study 1 and the effectiveness of the program was evaluated using one-group pretest-posttest experimental design. Data were collected from 34 voluntary participants in the program before and after the implementation of the program and analyzed using the paired samples t-test technique. It was found that the program had a positive effect on the improvement of the elderly people's understanding of successful aging in terms of health care, finance, social participation, leasure, social network and self acceptance. Based on these results, the implementation of the educational program designed in this study was recommended to improve the elderly people's quality of life and the directions for future research were advanced. successful aging, educational needs, educational program, effectiveness.

• Korean Journal of Biological Psychiatry
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• v.20 no.3
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• pp.86-90
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• 2013

Objectives The aim of this study was to find out the psychological changes associated with internet addiction between before and after the military drill among the young male army recruits. Methods All 1091 participants were army recruits aged from 19 to 22 years who participated in the 5-week military drill. They were assessed with some self-reported questionnaires [Sociodemographic questionnaires, Young's Internet Addiction Scale (IAS), the State-Trait Anxiety Inventory (STAI), the Beck Depression Inventory (BDI), the Barratt Impulsiveness Scale (BIS), the Attention-Deficit/Hyperactivity Disorder Self-Rated Scale (ASRS)]. They were divided into two groups, One is the internet addiction tendency group and the other is non-addiction group according to the IAS score. And the severity of the internet addiction tendency, depression, anxiety and impulsiveness were evaluated by the IAS, the STAI, the BDI, the BIS, the ASRS before and after military drill. Results The result of the paired t-test shows that the IAS, the STAI, the BDI, the BIS, the ASRS scores decreased after military drill in both non-addiction group and internet addiction tendency group. The result of the repeated measures ANOVA shows that there is an interaction effect between the changes of ASRS-hyperactivity (F = 23.437, p < 0.001), ASRS-impulsiveness (F = 4.896, p = 0.027), BIS-total (F = 4.057, p = 0.044), BIS-motor impulsiveness (F = 13.609, p < 0.001) scores and groups. The result of the generalized estimating equation shows that internet addiction tendency is associated with ASRS-inattention (${\beta}=0.075$, p < 0.001), ASRS-hyperactivity (${\beta}=0.092$, p = 0.002), STAI-trait anxiety (${\beta}=0.046$, p < 0.001), BIS-motor impulsiveness (${\beta}=0.119$, p = 0.028). Conclusions The results show that psychopathologies such as internet addiction tendency, depression, anxiety, impulsiveness may improve after military drill regardless of the groups. Internet addiction tendency may be related to the ASRS-inattention, ASRS-hyperactivity, STAI-trait anxiety, motor-impulsiveness. So these findings may be considered in the treatment of internet addiction in terms of the impulsiveness control.

• Proceedings of the Korean Society of Community Living Science Conference
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• 2009.09a
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• pp.97-97
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• 2009

본 연구에서는 초 중등 교원들의 농업 농촌에 대한 가치 인식 및 학교 현장에서의 학생 지도력을 높이기 위해 교원들에게 농촌어메니티에 대한 이론과 체험 학습을 제공하는 '농촌어메니티 체험 연수 프로그램'의 개발 적용하고, 프로그램의 효과를 분석하였다. '농촌어메니티 개념 및 정책 이해', '농촌어메니티 현장 이해 및 체험', '농촌어메니티 수업 적용'의 3개 영역으로 구성된 총 20시간의 교원연수 프로그램을 개발하였으며, '09. 7. 23. ~ 8. 13.까지 2박 3일씩 5차에 걸쳐 200명의 교사를 대상으로 연수 프로그램을 운영하고, 연수 전후 설문조사를 실시하여 그 결과를 분석하였다. 연수에 참여한 교원들의 인구통계학적 특성을 분석한 결과, 여성의 비율이 56.9%로 남성(43.1%)에 비해 높았으며, 일반교사의 비율(53.3%)이 부장교사(26.9%)나 교장 교감 (19.8%)의 비율에 비해 높았다. 연령 분포에서는 50대가 35.2%로 가장 많고, 40대가 32.7%를 차지하고 있었으며, 경력이 20년 이상인 교원들이 67.2%인 것으로 나타났다. 근무기관 분포에서는 초등학교 교원들이 54.8%로 가장 많았으며, 중학교, 고등학교 교원이 각각 20.3%, 18.8%인 것으로 나타났다. 근무지역 분포에서는 중소도시에서 근무하는 교원들이 70.6%로 대다수를 차지하고 있었으며, 농촌거주 경험이 있는 교원들이 64.8%인 것으로 분석되었다. 연수 참여 사전-사후 설문조사를 통한 인식 변화를 분석(Paired samples t-test)한 결과 참여 이후 '농업 농촌에 대한 관심 정도', '농업의 중요도에 대한 인식', '농촌의 생활 정주, 관광 휴양 여건에 대한 인식', '농촌어메니티에 대한 이해도'가 모두 개선된 것으로 나타났다. '농촌어메니티에 대한 중요도 인식'(5점 척도)에서는 환경자원, 자연자원, 역사자원, 경관자원, 시설자원, 경제활동자원, 공동체활동자원으로 분류된 37개의 세부자원들에 대한 중요도 인식이 연수 참여 이후 높아진 것으로 나타났다. 단, 환경자원 가운데 '수질'의 평균 점수는 사전 4.8671, 사후 4.8960로 유의미한 차이가 발견되지 않았다. 연수 전반에 대해 만족하는 교원의 비율이 98.5%로 나타났으며, 연수 이후 농업 농촌에 대한 이해도가 증가했다는 응답이 98.0%, 학생 지도력이 증가했다는 응답이 95.0%, 연수에서 학습한 내용을 학생지도시 활용하겠다는 응답이 97.5%로 집계되어, 개발된 연수 프로그램이 설계시 수립한 목적 달성에 기여하고 있는 것으로 분석되었다.

• Pediatric Infection and Vaccine
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• v.17 no.2
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• pp.114-121
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• 2010

Purpose : To examine the effect of unilateral otitis media and unilateral cerumen occlusion of the ear canal on thermometers. Methods : One hundred eighty six children with unilateral otitis media, fifty children with unilateral cerumen occlusion, and fifty children with neither otitis media nor cerumen were enrolled. Temperature was measured in both ear canals using thermometers. After 15 minutes, second temperature was measured again in both ears. Unilateral otitis media was graded by video otoscope for 7 grades. Differences in temperatures between affected ears and unaffected ears were analyzed. Results : No temperature difference between the normal and cerumen groups was observed. The mean temperature of the otitis media ear canal was $0.13{\pm}0.20^{\circ}C$ higher than that of the intact ear canal ($36.99{\pm}0.54^{\circ}C$ vs $36.86{\pm}0.52^{\circ}C$; P<0.001). There was no statistically significant temperature difference between grades. Conclusion : Unilateral otits media can affect estimation of body temperature measured by thermometers.

• The Korean Journal of Food And Nutrition
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• v.16 no.3
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• pp.192-196
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• 2003

The purpose of this study was to investigate the changes of body composition, serum lipids and several parameters of body fatness (percent body fat, waist-hip ratio) in abdominal women by exercise. For this study, 8-weeks intensive exercise(5km jogging/day, 50min/day) was continued by subjects and they limited only fat rich foods and controlled daily energy intake to 1,800kcal～2,100kcal per day. The subjects were 52 women and the distribution of ages was 36～54 years. The data were analyzed using SPSS/PC package program and the results were estimated by paired t-test, Pearson correlation. The results are summarized as follows : 1) After exercise-training for 8 weeks, percent body fat, body mass index, body weight, total cholesterol was decreased (p<0.05). 2) LDL cholesterol and triglyceride was decreased significantly(p=0.000). The changes in deep abdominal adipose tissue were related to changes in triglycerides. 3) After exercise training, the waist-hip ratio was significantly correlated to body weight and serum lipids. 4) According to the data of this study, Ⅰ recommended that obese women, especially, abdominal obese patients should exercise regularly and we should prolong many studies for obesity.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.3
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• pp.799-807
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• 2016

The objective of research was to explore the effects of Kinesic taping treatment on Kayaker's athletic performance and muscle fatigue variable. In order to accomplish such study objective, this study employed 8 ordinary university students and 8 university kayaker's as study subjects. The athletic performance records and blood lactate were analyzed before and after Kinesic taping treatment (KTT). Kinesic taping treatment was applied to the regions of agonist such as vastus medialis muscle, Latissimus dorsi muscle, Trapezius muscle, Biceps brachii muscle, and Triceps brachii muscle, which are major muscles for Kayaker's. Records for rest heart rate, athletic performance and blood lactate were measured upon 200m and 500m distance exercise using kayak ergometer. Data were analyzed by SPSS 19.0 using paired t-test and one-way repeated ANOVA at significant level of a = .05. First, performance records of 200m paddling kayak showed that the ordinary university students had a mean score of 60.13 second before and 58.75 second after kinesic taping treatment. University kayakers had a mean score of 58.75 second before and 53.0 second after kinesic taping treatment. Both groups had significant differences between before and after KTT in the athletic performance. In addition, levels of blood lactate showed that the ordinary university students had a mean score of 5.89mM before and 8.90mM after KTT and university kayaker's had a mean score of 5.79mM before and 8.48mM after KTT. The ANOVA showed that the level of ordinary university students' blood lactate was significantly higher than university kayakers only after KTT. Second, performance records of 500m paddling kayak showed that the ordinary university students had a mean score of 2.90 minute before and 2.77 minute after KTT and university kayaker's had a mean score of 2.30 minute before and 2.20 minute after KTT. Both groups had significant differences between before and after KTT in the athletic performance. Moreover, only university kayaker's had a significantly higher performance record than the counterpart. Levels of blood lactate showed that the ordinary university students had a mean score of 7.71mM before and 8.85mM after KTT and university kayakers had a mean score of 8.09mM before and 8.45mM after KTT. However, such a level of increase had no significant difference between the groups

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.16 no.1
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• pp.23-27
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• 2005

Background and Objectives : Voice disorders can cause problems in patients with benign vocal cord lesions emotionally, physically, economically and functionally. Neither subjective nor objective voice examinations can evaluate such factors adequately. The Voice Handicap Index (VHI) subjectively evaluates voice disorders in terms of physical, functional, emotional factors and measures the patient's perception of the impact of voice disorder. The purpose of this study is to evaluate the usefulness of VHI in the patients with benign vocal cord lesions. Materials and Method : The authors evaluated 37 patients who experienced laryngeal microsurgery for benign vocal cord lesions from september 2003 to August 2004. The VHI was used to measure the postoperative changes of the patient's perception and acoustic analysis and aerodynamic tests were also done. Statistical analysis was done using paired t-test and Pearson's correlation. Results : The VHI scores showed statistically significant reductions postoperatively. In acoustic analysis, jitter and shimmer had statistically significant reductions after surgery but noise-to-harmonics ratio did not. A statistically significant change in the average MFR and MPT perioperatively was found. The relationship between VHI and acoustic, aerodynamic analysis attained statistical significance. Conclusion : The VHI is a useful assessment tool to monitor the patient's self-perception of voice change after the surgery of benign vocal cord lesions. The VHI measurement, when combined with acoustic and aerodynamic analyses, will be helpful in comparing functional outcomes after voice surgery.

• The Korean Journal of Nuclear Medicine Technology
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• v.13 no.1
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• pp.116-119
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• 2009

Background: Preanalytical factors can affect reliability of hormone assay results. Adrenocorticotropic hormone (ACTH) in blood is considered highly unstable because of proteolytic degradation, so storage of blood samples on ice until analysis is recommended. In clinical practice, however, this procedure may present logistical problems because most samples for ACTH measurement must be shipped from the place of sample collection to the laboratory. Therefore, we studied the impact of time and temperature before plasma separation and analysis on the results of ACTH assays. Methods: A total number of 22 patients were enrolled in this study. We obtained 2 blood samples. ACTH concentrations were 35~126 pg/mL. ACTH concentrations were measured by immunoradiometric assay (IRMA) using commercial kits (CIS Biointernational, Gif-sur-Yvette, France). Results: ACTH levels showed a significant difference between the samples of $22^{\circ}C$ EDTA and $4^{\circ}C$ EDTA. Measured ACTH concentrations significantly decreased with time before freezing at $-20^{\circ}C$. ACTH levels showed no significant difference between the groups of after storage for 24 hr without centrifugation at $22^{\circ}C$ and $4^{\circ}C$. Conclusion: We recommend that blood samples be obtained on pre-chilled EDTA collection tubes. The shortest possible time between sample collection and processing is always the best laboratory practice.