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그림자료가 지적장애아동의 어휘다양도와 언어능력에 미치는 효과
배슬기,최성규 大邱大學校 師範大學 附設 敎育硏究所 2010 學校敎育硏究 Vol.6 No.1
이 연구는 지적장애아동을 대상으로 시각자료인 그림을 활용하여 어휘의 다양도와 언어능력에 미치는 효과를 알아보기 위함이었다. 이 연구에 참여한 3명의 지적장애아동의 생활연령은 8세 전후이며, 지능지수는 40에서 53에 해당하고 있다. 또한 수용언어와 표현언어 능력은 약 3년 정도 지체되어 있다. 이 연구의 설계는 전후검사 방법이며, 연구 기간은 2개월이었다. 언어능력을 알아보기 위한 도구는 취학전 아동의 수용언어 및 표현언어 척도(PRES)를 사용하였고, 어휘다양도를 알아보기 위해서는 어휘다. 양도(Type-Token Ratio; TTR) 검사 방법을 적용하였다. 이 연구의 그림자료는 PPVT(Peabody Picture Vocabulary Test)-R(Lloyd et al, 1981)을 근거로 총 112문항으로 구성하였다. 또한 명사와 동사카드는 아동의 어휘발달에 기초한 총 308가지의 다양한 어휘를 동작그림으로 표현한 동사카드이다. 이 연구에서는 그림자료 활용이 지적장애아동의 어휘다양도와 언어의 수용과 표현 능력에 긍정적인 영향을 미쳤음을 제시하였다. The purpose of this study was to compare and analyze the effects of picture-data to improve the vocabulary variety and language ability for mental retarded children. This study is made up of before and after steps to investigate the effects that using picture-datum have influence on language ability of mental retardation children. The result of language instruction by picture-datum, it have been improved about 6 month-old~1 year-old level that accommodation language and expression language, type-token ratio of mental retardation children. Because of that, I want to investigate picture-datum more and suggest the basis of developing and using picture-datum in language instruction
( Seul Kee Kim ),( Jae Kwan Lee ),( Se Hwan Park ),( Beom Seok Chang ),( Si Young Lee ),( Heung Sik Um ) 조선대학교 구강생물학연구소 2016 Oral Biology Research (Oral Biol Res) Vol.40 No.1
Although various instruments have been devised to treat peri-implantitis, none has become the technique of choice. Recently, a new implant cleaning bur was introduced. We compared the surface roughness and bacterial adhesion on implants after surface cleaning with various instruments. Two types of titanium disks - resorbable blasting media (RBM) and sandblasting with large grit and acid etching (SLA) - were used. Following treatments were administered: (1) no treatment; (2) tetracycline; (3) implant cleaning bur; (4) air polisher with glycine powder; and (5) copper alloy ultrasonic scaler tip. We measured the titanium surface roughness after cleaning. We also observed surface changes with scanning electron microscopy, and evaluated the bacterial adhesion related to changes in surface roughness. The surface roughness of RBM disks decreased significantly only in the third group. SLA disks in the third and fifth groups showed significantly decreased roughness. No significant difference in bacterial adhesion was found on treated RBM surfaces. The third and fifth groups also had significantly decreased bacterial adhesion on the SLA surfaces. The implant cleaning bur reduced the roughness of RBM and SLA titanium implants, and decreased the adhesion of bacteria on SLA surfaces, which may help prevent the recurrence of peri-implantitis.
( Seul Kee Lee ),( In Young Kim ),( Hye Min Jeong ),( Hyung Jin Kim ),( Jae Joon Lee ),( Hoon Suk Cha ),( Eun Mi Koh ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background/Objectives: The aim of this study was to investigate the radiographic changes in patients with gout in association with the control of serum uric acid level. Methods: Sixty one patients who had at least one erosive change on baseline radiography were included. Follow up radiography was taken at least 5 years apart from baseline radiograph. The primary endpoint was changes in the radiographic damage scores based on modifi ed Sharp/van der Heijde (mSvH) score in association with the control of serum uric acid level. Patients were divided by three groups which consist of improved, no change, aggravated patients for subgroup analysis. Results: The mean age was 55±13 years and 60 (98%) patients were male. Disease duration was 11±7 years and mean serum uric acid level was 8.8±1.9 mg/dL at baseline. Follow up duration between two radiographies was 10.8±3.6 years. All patients were receiving urate-lowering therapy. The change in the mean mSvH score between baseline and follow visit was not statistically signifi cant (6.77 vs. 6.69, respectively). The number of patient in improved, no change, aggravated groups was 22, 14, and 25 and the baseline plain radiographic damage score was 12.1, 4.85, and 3.7 respectively. As expected, the change in damage scores was positively correlated to AUC of uric acid level (r = 0.32, p=0.01). The patients with longer disease duration at baseline were more likely to have improvement in the follow up radiograph. (r = -0.46, p=0.004). In improved group, only the change of damage scores was negatively associated with disease duration at baseline (r = -0.48, p = 0.024). Conclusions: Our study demonstrated that radiographic damage in gout may be reversible to some extent and that the magnitude of improvement depends on the degree of serum uric acid control.
점탄소성-손상모델 기반 전산 CTOD 테스트 기법 개발
김슬기(Seul-Kee Kim),이치승(Chi-Seung Lee),이제명(Jae-Myung Lee) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
The aim of the present paper is the development of the computational CTOD test method based on viscoplastic-damage model. In general, the ductile crack characteristics such as crack tip opening displacement, fracture toughness can be obtained by CTOD test. However, it takes huge time and cost to carry out the experimental environments. Hence, as an alternative method, the simulation based CTOD test technique has been studied widely among the computational engineers. In the present study, the ductile crack characteristics of austenitic stainless steel are investigated using the viscoplastic-damage model. In order to consider the phase transformation from austenite to martensite, the Bodner-Partom model was modified. Moreover, the material degradation during the CTOD test is calculated using the Boder-Chan damage model. The proposed viscoplastic- damage model is formulated as a fully implicit form and implemented to ABAQUS user defined subroutine UMAT. The computational CTOD test method is compared to the CTOD experiments in order to validate the proposed method.
Destructive Radiologic Development of Intravascular Papillary Endothelial Hyperplasia on Skull Bone
Lee, Seul-Kee,Jung, Tae-Young,Baek, Hee-Jo,Kim, Seul-Kee The Korean Neurosurgical Society 2012 Journal of Korean neurosurgical society Vol.52 No.1
Intravascular papillary endothelial hyperplasia (IPEH) is a rare vascular benign lesion that rarely involves the central nervous system with or without skull invasion. We report a rare case of IPEH on the skull bone, which displayed destructive radiologic development associated with hemorrhage. A 14-year-old male presented with an incidentally detected a small enhancing, left frontal osteolytic lesion. Previously, he underwent operation and received adjuvant chemoradiation therapy for cerebellar medulloblastoma. Follow-up magnetic resonance imaging revealed a left frontal bone lesion, which expanded to an approximately 2 cm-sized well-circumscribed osteolytic lesion associated with hemorrhage for 20 months. Frontal craniectomy and cranioplasty were performed. Destructive change was detected on the inner table and diploic space of the skull. The mass had a cystic feature with hemorrhagic content without dural attachment. Pathologic examination showed the capsule consisted of parallel collagen lamellae representing a vascular wall, vascular lumen, which was pathognomonic for IPEH. Immunohistochemical staining revealed that the capsule was positive for CD34 and factor VIII, which favor the final diagnosis of IPEH. This was the first case of intracalvarial IPEH.