• 대한지리학회:학술대회논문집
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• 대한지리학회 2001년도 춘계학술대회 요약집
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• pp.151-153
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• 2001

• 대한기계학회논문집
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• 제17권9호
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• pp.2242-2251
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• 1993

The mesh-based frictional contact model has been developed which does not rely on the spatial derivatives of the tool surface. Only points on the surface are evaluated from the description. which can then be simplified because of the relaxed demands placed on it. The surface tangents, normals, and corresponding derivatives at each finite-element node are evaluated directly from the finite-element mesh, in terms of the connecting nodal positions. The advantages accrue because there is no longer a need for a smooth tool surface to assure reasonable normals and derivatives. Furthermore, it can be shown that the equilibrium equations can only be properly written with a special normal derived from the mesh itself. The validity, accuracy, computation time, and stability of mesh-based contact model were discussed with the numerical examples of rounded flat-top and rough, flat-top rounded punch forming operations. Also, the forming process of a automobile inner panel section was simulated for testing the robustness of new contact model. In the discussion, the superiority of new model was examined, comparing with tool-based contact one.

• 대한치과교정학회지
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• 제14권1호
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• pp.135-149
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• 1984

This study was performed to aid for the case analysis and diagnosis of the maxillofacial deformities. A cephalometric analysis was made from 101 subjects over 18 years old, that consisted of 46 males and 55 females with normal occlusion, acceptable profile. The results o f this study were obtained as follows: 1. The tables of normals in adult male and female were made. 2. The angles of SNO were $65.5^{\circ}$ in male and $65.3^{\circ}$ in female and the horizontal linear measurements from 0 to NA(O-NA) were 9.0 mm in male and 8.9 mm in female. 3. The cranial base angles (SN-FH) were $8.2^{\circ}$in male and $10.3^{\circ}$ in female and the mandibular plane angles (OP-HP) were $28.1^{\circ}$ in male and $26.2^{\circ}$ in female. 4. The correlation of (O-NA) to S-O/S-A and S-O/S-N were higher than SNO, and the correlation of (N-A) to SNA and (N-B) were high.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제28권4호
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• pp.318-325
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• 2002

The primary method of diagnosis in craniofacial deformity patient is used by gross inspection. So we studied the frontal photometric measurements for maxillofacial Korean normals 44 male and 48 female ages 19 to 20 years were selected from a group of 92 healthy Kyung Hee university students in Seoul.. The photograph were taken with the subject sitting in head position parallel with interpapillary plane to the floor. During taking pictures, facial anallyser by Obwegeser(Martin Co., Germany) was used for correct measurements. The results of this study was followed. 1. In the linear measurements, all values of males were longer than those of females but middle third height and lower third height, facial width and nasal width of males were longer than those of females in p<0.05 2. The difference between right and left angular and linear measurement was insignificant. 3. In the horizontal facial ratios, interocular distance and nasal width were longer and mouth width were smaller in korean than in american(p<0.05). 4. In the vertical ratios, korean women have shorter facial height of lower third comparing with facial height of middle third than american(p<0.05). 5. In the vertical facial ratios, korean have smaller proportion below the stomion in the lower third department than american. (p<0.05).

• 말소리와 음성과학
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• 제6권4호
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• pp.181-187
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• 2014

The present study was performed to investigate the characteristics of breath groups while reading paragraph in normal adults and adult patients with voice disorders. 10 normal females(avr. 20.6 yrs.), 10 young voice disorder females(avr. 33.5 yrs., P1 group), and 10 old voice disorder females(avr. 56.3 yrs., P2 group) read a paragraph of 210 syllables. By using the 'Running Speech' program of the Phonatory Aerodynamic System(PAS), total duration, numbers of breath groups, duration per breath group, and numbers of syllables per breath group were measured, and their correlations with aerodynamic measurement results of reading were analyzed. As a result, in total duration, numbers of breath groups, normals scored highest and P2 group speakers, lowest. Normals showed the longest duration per breath group which was not significant. P2 group speakers showed the highest numbers of syllables per breath group. Correlation analysis showed significantly high correlation scores of total duration and expiratory airflow; numbers of breath groups and inspiratory volume.

• Journal of Nutrition and Health
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• 제26권6호
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• pp.715-727
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• 1993

This study was performed to see the effect of nutritional status on fatty liver. Subjects were 219(male : 174, female : 45) fatty liver patients living in cities, and 10-60yrs old. Nutrient and alcohol intakes, health state and medical history were investigated by individual interview, and blood sample was taken. Results were as follow; Most subjects were obese an overweighing and suffering from hepatitis. Calorie and carbohydrate intakes of male and females patients were lower than mean intakes of normal citizens. Protein and fat intakes of male patients were higher than mean intakes of normal citizens. Proportions of protein and fat to total calorie intake in patients were higher than those of normal citizens. Alcohol intake was markedly higher in patients than normal group, and increased with increasing body weight. Serum total cholesterol, HDL-cholesterol, total lipid, total protein and albumin conc.s and Hb and Hct levels were in normal ranges, But serum TG level of patients was higher than normal level. Serum total fatty acid level, $\omega$-3/$\omega$-6 and P/S FA ratios were higher in patients than normals. Serum total EAAs, NEAAs and all AAs levels of patients were higher than normals. It is plausible that high animal food and alcohol intakes, excess body fat and hepatitis were associated with fatty liver.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제5권1호
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• pp.70-82
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• 1994

본 연구에서는 다양한 임상 집단과 정상 집단의 아동들을 대상으로 한국판 아동용 Luria-Nebraska 신경심리 검사(LNNB-C)의 타당도와 임상적 유용성에 대해 알아보았다. 8세에서 12세 연령 범위의 뇌손상 집단(N=19), 뇌손상이 의심되는 ADHD 집단(N=16), 소아정신과 장애 집단(N=16), 그리고 정상 아동 집단(N=147)을 대상으로 한국판 LNNB-C의 진단적 변별력을 검증하였고, BGT, KEDI-WISC와의 상관 관계를 알아보았다. 정상 집단과 뇌손상 집단간에 LNNB-C 모든 척도상에서 유의미한 차이가 있었으며, 정상 집단과 ADHD 집단간에도 뇌손상 진단에 중요한 11개 임상 척도와 3개의 요약 척도에서 모두 유의미한 차이가 있었다. ADHD와 뇌손상 집단간에는 요약 척도(병리 척도, 좌반구 척도 및 우반구 척도)에서 유의미한 차이가 있었으므로, 요약 척도가 ADHD와 뇌손상 집단을 변별하는데 있어 중요한 척도임이 시사되었다. 정상 집단과 소아정신과 장애 집단간에는 모든 척도상에서 유의미한 차이가 없었다. LNNB-C 척도점수에 의한 판별 분석 결과, LNNB-C 척도가 전상 집단의 98.6%를 정확히 정상 집단으로, ADHB집단의 62.5%를 ADHD 집단으로, 그리고 뇌손상 집단의 73.7%를 뇌손상 집단으로 정확히 판별하였으며, 전체 정확 판별율이 92.9%였다. 전체 문항들중에서는 정상 집단과 뇌손상 집단을 유의미하게 변별해주는 문항이 131개 (87.9%)였으며, 정상과 ADHD 집단을 변별해주는 문항이 55개(36.9%), ABHD와 뇌손상 집단을 구분해주는 문항이 52개(34.9%), 그리고 ABHD와 소아정신과 집단을 구분해주는 문항이 23개 (15.4%)인 것으로 나타났다. LNNB-C 임상 척도들과 BGT 오류 점수간에 유의미한 정적 상관관계가 있었고, 몇개의 척도를 제외하고는 LNNB-C와 KEDI-WISC 척도 점수들간에도 유의미한 부적 상관이 있는 것으로 나타났으며, 특히 LNNB-C의 지적 과정 척도(C11)와 FSIQ간에 가장 높은 부적 상관을 보여주었다. 이러한 절과들은 모두 뇌손상을 진단하는 신경심리 검사로서 한국판 LNNB-C의 타당도 및 진단 변별력이 우수함을 입증해주는 결과라 할 수 있다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권7호
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• pp.4187-4193
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• 2013

Background: Evaluation of Human papilloma virus (HPV) and its association with promoter methylation of candidate genes, p53 and Aurora A in esophageal cancer. Materials and Methods: One hundred forty-one esophageal tissue samples from different pathologies were evaluated for HPV infection by PCR, while the promoter methylation status of p53 and Aurora A was assessed by methylation-specific restriction based PCR assay. Statistical analyses were performed with MedCalc and MDR software. Results: Based on endoscopy and histopathology, samples were categorized: cancers (n=56), precancers (n=7), esophagitis (n=19) and normals (n=59). HPV infection was found to be less common in cancers (19.6%), whereas its prevalence was relatively high in precancers (71.4%), esophagitis (57.8%) and normals (45.7%). p53 promoter methylation did not show any significant difference between cancer and normal tissues, whereas Aurora A promoter methylation demonstrated significant association with disease (p=0.00016, OR:5.6452, 95%CI:2.18 to 14.6) when compared to normals. Aurora A methylation and HPV infection was found in a higher percentages of precancer (66.6%), esophagitis (54.5%) and normal (45.2%) when compared to cancers (14.2%). Conclusions: Aurora A promoter methylation is significantly associated with esophageal cancer, but the effect of HPV infection on this epigenetic alteration is not significant. However MDR analysis showed that the hypostatic effect of HPV was nullified when the cases had Aurora methylation and tobacco exposure. Further HPV sub-typing may give an insight into its reduced prevalence in esophageal cancer verses normal tissue. However, with the present data it is difficult to assign any significant role to HPV in the etiopathology of esophageal cancer.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제3권1호
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• pp.14-25
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• 1992

아동기의 반사회적 행동(Antisocial behavior)은 성인기의 장애로 이어지며(Robins, 1974) 최근 우리 나라에서도 청소년 비행과 범죄의 저연령화, 집단화, 재범화등의 문제점을 드러내고 있음을 볼때 아동기의 반사회적 행동은 새삼 관심을 집중시켜야 할 특성이다. 본 논문은 현행 법상 형사적 벌을 면하게 되는 14세미만의 아동들을 대상으로 그동안 충분히 논의되어왔던 변인들을 제외하고 새로 논의되고 있는 사회적 환경에 대한 인지기능과 학습적 기능과 반사회적행동간의 관련여부를 알아보고자 하는데 목적이 있다. 본 연구의 피험자는 저연령과 고연령집단, 반사회적행동 아동집단과 일반아동집단에 따라 구분되어 배치된 총 64명의 아동들로써 사회적 환경지각 가운데 친구지각, 지인지각, 좌절상황지각을 측정했으며, 학습적 기능측정은 시각운동통압면, 쓰기표현면, 문법구성면에서 이루어졌다. 연구결과는 다음과 같다. 첫째, 친구시각면에서 반사회적행동 아동들은 일반아동에 비해 친구를 더 지지적인 관계로 지각하고 있었으며, 지인지각에서는 일반아동과 차이가 없었다. 둘째, 좌절상황지각면에서 일반아동들이 내벌적인 공격방향을 반사회적행동 아동집단보다 더 사용하고 있으며, 반사회적행동 아동들이 장해를 더 예민하게 지각하고 있으며, 반응의 형태에서도 반사회적행동 아동들이 문제를 해결하려는 의욕이 적음을 알 수 있었다. 세째, 학습기능측정결과에서는 시각운동통합력, 쓰기표현력, 문법완성력 모두에서 일반아동이 의의있게 우세함을 알 수 있었다. 그러므로 반사회적행동 아동들의 학습적기능의 결함상태를 확인할 수 있었다.

• Communications for Statistical Applications and Methods
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• 제3권3호
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• pp.225-233
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• 1996

In this paper, we propose Bayes estimators of the finite population mean based on heavy-tailed prior distributions using scale mixtures of normals. Also, the asymptotic optimality property of the proposed Bayes estimators is proved. A numerical example is provided to illustrate the results.