[논평] 김기석 박사의 논문에 대한 논평

권요한 개혁주의이론실천학회 2024 개혁주의 이론과 실천 Vol.27 No.-

절대기준평가의 적용상의 문제점 ( A Study of Masan National College Students Attitudes towards the Educational Counseling )

권요한 마산대학교 1981 論文集 Vol.3 No.1

GaAs MESFET의 광특성에 관한 해석적 이론

권요한,정해양 慶熙大學校 레이저 工學硏究所 1997 레이저공학 Vol.8 No.-

In this paper, we analyzed d. c. and microwave characteristics of GaAs-MESFET under laser illumination. We obtained the analytical expression of I-V characteristics of GaAs-MESFET for linear, knee and saturation regions by solving 2-dimensional Poisson's equation and compared calculated I-V curves with experimental data. The resulting I-V curves are in good agreement with experimental data. We also obtained the analytical expressions for the current gain cut-off frequency f?? and time constant for the linear and the knee region, respectively. It was predicted that the reduction of the current gain cut-off frequency and the increase time constant due to the photovoltaic effect under laser illumination.

언어장애의 진단과 치료(3)

권요한 한국재활과학회 1980 難聽과 言語障碍 Vol.3 No.4

언어장애의 진단과 치료

권요한 한국재활과학회 1981 難聽과 言語障碍 Vol.4 No.1

언어장애아요육

MQAM, DPSK, OFDM-MQAM 과 OFDM-DPSK에서 위상잡음에 의한 Symbol Error Rate

권요한,김인석 경희대학교 레이저공학연구소 2006 레이저공학 Vol.17 No.-

In this paper, SER(Symbol Error Rate) variation and effects on SER by phase noise at various frequency offset of the local oscillator in digital communication systems are gerneralyzed for MQAM (M-ary Quadrature Amplitude Modulation), DPSK (Differential Phase Shift Keying), OFDM (Orthogonal Frequency Division Multiplex)-MQAM and OFDM-DPSK, and compared those with the ideal cases, which have no phase noise, through the MATLAB simulation. And the ratio between modulation bandwidths and the SER on the various frequency offsets on the above modulation methods have been analyzed for the system requirement of minimum phase noise characteristics. From this study, we have confirmed that the most sensitive modulation method on the phase noise is OFDM-MQAM.

청각장애학생의 학업성취 관련 요인 분석

권요한 ( Yo Han Kwon ) 한국특수아동학회 2013 특수아동교육연구 Vol.15 No.3

이 연구의 목적은 청각장애학생의 학업성취 관련 요인이 무엇인지를 먼 과거 환경 변인,과거 환경 변인,현재 환경 변인에 따라 요인 분석하고,이들 요인에 대한 청각장애교사의 인식 경향과 교사의 학교급별,경력별 인식 차이를 알아보며,학업성취 관련 요인 간의 상관관계를 분석하는 것이다.전국의 청각장애 특수학교교사 100명을 대상으로 학생의 학업성취 관련 요인에 대한 설문조사를 실시하였다.설문문항은 5점 척도의 총 37개 문항으로 구성되었다.이 연구의 결과를 요약하면 다음과 같다.첫째,청각장애학생 학업성취 관련 요인은 먼 과거 환경 변인에서 3개요인(학교환경,사회환경,가정환경),과거 환경 변인에서 4개요인(학생의 인지적 특성,정의적 특성, 의사소통 특성,장애 특성),현재 환경 변인에서 3개요인(교사 변인,수업계획과 관리,수업실행과 평가)등 총 10개요인으로 밝혀졌다.둘째,청각장애학생 학업성취 관련 요인에 대한 교사의 인식경향은 전반적으로 높게 나타났으며,교사의 배경변인에 따른 차이는 과거 환경 변인 중 학생의 정의적 특성,의사소통 특성에서 경력별 차이가 나타났으며,현재 환경 변인에서 교사 변인에 대해 경력별,학교급별 차이가 나타났다.이외의 요인에 대해서는 인식차이가 나타나지 않았다.셋째,청각장애학생의 학업성취 관련 요인간의 상관관계는 10개요인 모두에서 유의미한 정적 상관관계가 나타났다. The purpose of the study was to analyze factors according to environmental variables of remote past, environmental variables of the past, and present environmental variables on what were factors related to schoolwork achievements of students with hearing disorders; to analyze if there are differences in the factors according to background variables of teachers; and to analyze what correlation exists between factors. To this end, a questionnaire survey about factors related to schoolwork achievement was carried out with 100 teachers in special education schools for students with hearing disorders. Collected survey sheets were analyzed by exploratory factor analysis, t-test, product moment correlation of Pearson, and Multiple Regression analysis. The major results of the study were as follows. First, it was figured out that factors related to schoolwork achievement of students with hearing disorders were 10 factors in total - 3 factors in environmental variables of remote past (school environment, social environment, and family environment), 4 factors in environmental variables of the past (cognitive characteristics of students, affective characteristics, characteristics of communication, disorder characteristics), and 3 factors in present environmental variables(teacher variable, teaching plan and management, and teaching implementation and assessment) Second, as a result of analyzing recognition tendency of teachers about factors related to schoolwork achievement of students with hearing disorders and differences in recognition each background variables, in environmental variables of remote past, recognition tendency appeared high in the order of family environment, school environment, and social environment. In environmental variables of the past, recognition tendency appeared high in the order of disorder characteristics, affective characteristics, characteristics of communication, and cognitive characteristics of students. In present environmental variables, recognition tendency appeared high in the order of teaching plan and management, teaching implementation and assessment, teacher variables. Overall, recognition tendency appeared high in the order of environmental variables of the past, environmental variables of remote past, and present environmental variables. For differences according to background variables of teachers, there were differences in recognition according to career in affective characteristics of students and characteristics of communication among environmental variables of the past. There appeared differences in recognition according to career and school in teacher variables among present environmental variables. And there were differences in gender in teaching implementation and assessment. For other related factors, there were no differences in recognition according to background variables of teachers. Correlation among factors related to schoolwork achievement of students with hearing disorders showed significant positive correlation in all the 10 related factors. From the results of regression analysis on influences of factors related to schoolwork achievement on teaching implementation and assessment, it appeared that factors related to schoolwork achievement of students with hearing disorders explained teaching implementation and assessment by 63.6%.

말초동맥질환에서의 죽종절제술: 현재와 미래

권요한,김진우,원제환,김성호,김정은,박성준 대한영상의학회 2021 대한영상의학회지 Vol.82 No.3

Atherectomy has become a promising treatment option for peripheral artery disease caused by diabetes mellitus or end-stage renal disease. Atherectomy refers to the removal of atheromatous tissue by mechanical method, resulting in an enlarged lumen of the treated blood vessel. Based on this method, the term is limited to the percutaneous minimally invasive approach, and there are currently two types of atherectomy devices available in Korea. The increased prevalence of atherectomy has led to the concept of “vascular preparation” and a new treatment concept of “leave nothing behind.” Various studies have proven the safety and effectiveness of atherectomy; however, there are some limitations. We need to remain focused on patient selection and subsequent large-scale research. 죽종절제술은 당뇨병과 만성콩팥병증 등에 의해 발생하는 말초동맥질환에서 유망한 치료법이다. 죽종절제술은 기계적 방법을 통해 죽종 조직을 제거하여 혈관의 내경을 확대하는 것을말한다. 방법의 특성상 주로 경피적 미세 침습 접근 방식에 국한하여 통용되는 용어이며, 현재 한국에서 사용 가능한 죽종절제술 장치는 두 가지가 있다. 죽종절제술이 성행하면서 “혈관 준비”라는 개념과 “아무것도 남기지 않기”라는 새로운 치료 개념이 대두되었다. 다양한 연구들이 죽종제거술의 안전성과 효용성을 증명하고 있지만 그 한계도 존재하므로, 환자 선택에 신중을 기할 필요가 있고 후속적인 대규모의 연구가 필요하다.

언어교육 프로그램을 위한 언어습득이론의 몇 가지 관점

권요한 창원대학교 1986 논문집 Vol.8 No.

개인정보로서의 주소정보보호: 디지털 가상주소

권요한(John Kwon) 대한지리학회 2022 대한지리학회 학술대회논문집 Vol.2022 No.6