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趙元浩(Cho Won Ho) 국민대학교 교육연구소 1983 교육논총 Vol.2 No.-
The developmental theory of Jean Piaget describes intellectral growth, from sensory-motor intelligence to adult logic. Although Piaget did not dealt with the mentally retarded children, his theory has been applied to those children by many researchers. Inhelder(1968) proposed a method to order adult retardates according to Piaget"s developmental stage. In this classificatory system, idiot is viewed as fixed at the level of sensorimotor intelligence; imbecile is seen as incapable of surpassing the pre-operational stage; moron is seen as unable to progress beyond concrete operational stage; and the borderline adult is seen as able to use only the simple kinds of formal operational tasks. Hood"s study(1962) on the montally retarded supported Piaget"s notion of stage in the development of number concepts. Lister(1972) studied the development of educationally subnormal children"s understanding of conservation, and then this study results supported that conservation skill can be taught to retarded subjects. McManis(1969) reported that retarded subjects showed a marked delay in transibity development. This finding is inconsistent with Piaget"s hypothesis that conservation and transibity occur together. Stephens(1966) concluded in his study that conservation of weight was more difficult than conservation of water, and the latter was more difficult than conservation of number for both the mentally retarded and normal subjects. And also. conservation of inequality was less difficult than conservation of equality for all kinds of concepts. As shown above, these results of investigations into the application of Piaget"s stage-theory of development indicate that the stage of development in the mentally retarded. paralled those described by Piaget, but appear at latter chronological periods. The fact that people can change and the notion of educability of intelligence have dominated the thinking of those advocating cognitive-based training problems for the mentally retarded. And because of the treamendous variability in cognitive of the mentally retarded task performance with in IQ categories, identification of specific aspects of concept learning holds promise for enhancing the school performance of the mentally retarded children through individualized instruction.
초등영어 학습자의 정보처리 단위의 크기와 영어능력의 상관관계 분석
조원호(Cho, Won-Ho, 손중선(Sohn, Joong-Sun) 한국초등영어교육학회 2009 초등영어교육 Vol.15 No.3
This study was intended to investigate the correlation between the information unit size in the language process, the speaking speed, the STM capacity and the English communicative proficiency of elementary school students In this study, 62 elementary 6™ graders were tested as subjects This study consists of three stages Stage one was to test the STM capacity of the subjects Stage two measured the information unit size in the language process and the speaking speed Stage three tested the students' English communication proficiency which consisted of speaking and listening skill After these three stages, the correlations of the parameters were examined using SPSS 12? window package The results of this study were as follows First, if the size of the unit of information process was increased by chunking, the speaking speed and the STM capacity for English were increased Second, the communicative proficiency was increased as the information unit size increased The implication from this study for the elementary English teaching process could be briefly noted as follows, (1) The main focus of elementary English teaching should be always on the sentence or thought group level, and the word level teaching is advised to be designed as supplementary to the main focus, (2) As a way of increasing the information unit size, chants, song, games or dramas would be a good choice to give a situation for chunking information in a meaningful context
치아우식증 유발 세균에 대한 CPC 함유 구강청정제의 항균효과
조원호 ( Won-ho Cho ),조자원 ( Ja-won Cho ),유현준 ( Hyun-jun Yoo ),신경훈 ( Kyong-hoon Shin ),신기해 ( Gi-hae Shin ),전열매 ( Yeol-mae Jeon ),이종천 ( Jong-cheon Lee ) 대한예방치과·구강보건학회 2021 大韓口腔保健學會誌 Vol.45 No.2
Objectives: The purpose of this study was to evaluate and report the antibacterial efficacy in relation to oral disease-causing bacteria using a mouthwash containing 0.05% CPC in an in vitro test. Methods: The sterilization test and susceptibility assay of mouthwash containing 0.05% CPC were investigated against Streptococcus mutans, Streptococcus sobrinus, and Lactobacillus acidophilus; Streptococcus sanguinis as oral bacteria related to dental caries; Enterococcus faecalis as apical periodontitis-related bacteria; and Actinomyces israelii, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Prevotella intermedia, Prevotella nigrescence, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, and Filifactor alocis as periodontal disease-related bacteria. Results: In the sterilization test, most of the bacteria had more than 99.99% sterilizing power for all samples but compared to other bacteria, the sterilizing power of these samples was not successful for L. acidophilus and E. faecalis bacteria. When comparing the sterilization power between the samples, sample 3 (0.05% CPC+20% ethanol) was the strongest. Conclusions: In the antimicrobial activity test, sample 3 inhibited growth at the lowest concentration overall.
HTPB 추진제 노화 특성 및 HFC 기반 수명 평가 기법
조원호(Wonho Cho),웨스트룬드(M. Westerlund),류백능(Baek-Neung Ryoo),정규동(Gyoo-Dong Jung),유지창(Ji-Chang Yoo) 한국추진공학회 2017 한국추진공학회 학술대회논문집 Vol.2017 No.5
HTPB 추진제는 자연 저장 기간 동안 내부 시효성 물질들에 의한 물리․화학적 반응으로 인해 서서히 노화가 진행된다. 각기 다른 시간-온도 조건에서 이들 시효성 물질의 가속 노화 시험을 통해 자연상태에서의 노화 특성을 모사할 수 있다. 본 논문에서는 장기 저장 기간 동안 느리게 진행되는 HTPB 추진제의 물리 화학적 반응에 의한 노화 특성을 HFC(Micro-Heat Flow Calorimeter)로 분석 평가하여 수행한 HTPB 추진제의 신개념 수명 예측 기술에 대하여 고찰하였다. During natural ageing of HTPB propellant undergoes a series of slow physico-chemical degradation reactions. By using accelerated ageing conditions it is possible to simulate the material behaviour at different time-temperature conditions especially focused on the in-service conditions. Ageing behaviour of HTPB propellant were investigated using HFC(Micro-Heat Flow Calorimeter) is universal technique for measuring the rate of slow chemical and physical processes in long-term storage.
조기에 두개골 전이를 일으킨 여포성 갑상선암 -증례보고-
조원호 ( Won Ho Cho ),차승헌 ( Seung Heon Cha ),송근성 ( Geun Sung Song ),최창화 ( Chang Hwa Choi ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2007 대한뇌종양학회지 Vol.6 No.2
Metastasis to the skull frequently occurs in patients with lung, breast and prostate cancer. However, skull metastases from thyroid carcinoma have been rarely reported. Thyroid carcinoma usually have a long clinical course before the diagnosis of skull metastasis, however we experienced an unusual early skull metastasis from thyroid carcinoma. We review the literature on skull metastasis from thyroid follicular carcinoma and report a case of a 55-year-old female who presented with lytic skull metastasis of thyroid follicular carcinoma. She had a history of thyroid surgery for a thyroid nodule 1 year ago. She complained of painless scalp mass over the left parietal region. Radiological investigations revealed a lytic skull mass in the left parietal region. The histological diagnosis was skull metastasis from thyroid follicular carcinoma. The patient was given whole body I131 radio-iodine internal radiation and thyroid stimulating hormone(TSH) suppression therapy.