메탄 촉매 연소를 위한 Co-Ti-O 혼합산화물의 Redox 특성 연구

손은남(Eun Nam Son),이루세(Roosse Lee),김수현(Soo Hyun Kim),류호정(Ho Jung Ryu),백점인(Jeom In Baek),손정민(Jung Min Sohn) 한국에너지기후변화학회 2017 한국에너지기후변화학회 학술대회 Vol.2017 No.11

매체순환연소공정용 CaSnO₃ 산소전달입자의 산화·환원 특성 연구

손은남 ( Eun Nam Son ),백승훈 ( Seung Hun Baek ),이루세 ( Roosse Lee ),손정민 ( Jung Min Sohn ) 한국공업화학회 2019 공업화학 Vol.30 No.1

본 연구는 매체순환연소공정용 산소전달입자로서 CaSnO₃ 입자의 타당성을 조사하기 위해 수행하였다. CaSnO₃은 페롭스카이트 구조를 가지고, 반복되는 환원-산화 반응 후에도 구조적안정성을 보였다. 산소전달량은 환원 반응 시 결정 구조 변화를 통해 계산된 이론 수치와 거의 동일한 15.4 wt%를 가졌다. 10번의 환원과 산화 반응 후에, 산소전달량과 산소전달속도는 작동 온도에서 일정하게 유지되었다. 결론적으로, CaSnO₃ 입자는 CLC의 산소 운반체로서 좋은 대체물질이 될 수 있다고 판단하였다. This study investigated the feasibility of CaSnO₃ particles as an oxygen carrier in chemical looping combustion (CLC). CaSnO₃ particles had a perovskite crystal structure and showed the structural stability after repeated reduction-oxidation reactions. The oxygen transfer capacity was 15.4 wt% almost the same as the calculated theoretical value from the crystal structure transformation during reduction. After 10^th cycles of reduction and oxidation, the oxygen transfer capacity and rate were still maintained constantly at an operating temperature. In conclusion, CaSnO₃ particles could be a good alternative material as an oxygen carrier in CLC.

치매 노인들의 담화 특성 연구

손은남(Son Eun-Nam),강수균(Kang Soo-Kyoon) 한국재활과학회 2003 難聽과 言語障碍 Vol.26 No.1

The purpose of this study was to describe a content-focused, easy-to-use method of analysing the discourse of persons with dementia. The method was applied to analyze the discourse of 10 normal aging subjects, 4 patients with vascular dementia and 9 with Alzheimer's dementia, using 4 different types of discourse. Rules of demarcating subjects' transcripts into utterances were presented. For the structural analysis, the subjects were prompted to produce narrative discourses, procedural discourses, expository discourses, and conversational discourses. Items for the analysis included the following; total utterances (TU), Positive utterance is topic comment (TC), TC/TU and Negative utterance is topic comment digression (TCD), TCD/TU, off topic statement (OT), repetition (Rep), answer to a question (AQ), don't know (DK), refusal (Ref), negative self-evaluation (NSE), anomia (ANOM), OT/TU. The one-way ANOVA and LSD probe were performed to find the significant differences among three groups. The results of this study were discussed.

장애 등급과 단어 내 음운 길이에 따른 지적장애 아동들의 조음음운 특성 연구

손은남(Eun Nam Son),박현(Hyun Park),박찬희(Chan Hee Park) 한국언어치료학회 2013 言語治療硏究 Vol.22 No.2

The purpose of this study was to investigate the differences in the phonological abilities of mentally retarded children according to their degree of retardation and word length. For this purpose, 30 mentally retarded children from Busan or the Gyeongsangnam-do region were surveyed to analyse their phonological capabilities (nine children of 1st degree retardation, 12 children of 2nd degree retardation and nine children of 3rd degree retardation). The following are the results of the study. Firstly, with lower intellectual ability came lower PWC. In addition, as the number of syllables increased, PWC decreased. Secondly, with lower intellectual ability came lower PMLU. In addition, as the number of syllables increased, PMLU increased. Thirdly, with lower intellectual ability came lower PWP. In addition, as the number of syllables increased, PWP decreased. Finally, with lower intellectual ability came higher PWV, and as the number of syllables increased, PWV increased.

학령기 아동의 이야기 말하기와 이야기 쓰기 특징

박은실(Eun Sil Park),이우진(Woo Jin Lee),손은남(Eun Nam Son) 한국언어치료학회 2012 言語治療硏究 Vol.21 No.3

The purpose of this study was to investigate any difference in vocabulary variety and the word class frequency of school-aged children’s story telling and writing. The subjects selected 20 normally developing children. A t-test was performed to determine any significant difference in vocabulary variety of story telling and writing. This was compared with the word class frequency of story telling and writing. Vocabulary variety of this study was defined as the TTR, NDW, and NTW. The results of this study were as follows. First, there was no significant difference between the two process when looking at TTR, NDW and NTW. Second, the two are much alike in word class frequency.

단어단위 음운 분석을 통한 취학 전 아동들의 음운 특성 연구

박현(Hyun Park),손은남(Eun Nam Son) 한국언어치료학회 2012 言語治療硏究 Vol.21 No.4

The purpose of this study is to estimate pre school children’s whole-word abilities and to establish criteria for the whole-word approach to the treatment and diagnosis of phonological disorders in children. The subjects who participated in the experiment are 120 normal children aged 5 to 7 years living in Busan and Gyeongsangnam-do. There were no statistically significant gender differences in age and phonological abilities. The following are the results of this study. Firstly, there was a difference in whole-word correctness (PWC), complexity (PMLU), proximity (PWP), and variability (PWV) with age. Secondly, there was a high correlation between PCC (Percentage of Consonants Correct) and measurements of whole-words. Finally, there were correlations between all measurements. There was a positive correlation between whole-word correctness (PWC), complexity (PMLU) and proximity (PWP), but a negative correlation between variability (PWV) and other measurements.

여성결혼이민자의 한국어 어휘 및 구문능력

김승희(Seung Hee Kim),손은남(Eun Nam Son) 한국언어치료학회 2013 言語治療硏究 Vol.22 No.2

The purpose of this study was to investigate the problems and the solutions of the Korean traits of married immigrant women. The subjects were 16 married immigrant women from seven different countries. The data were collected using interviews. Among spontaneous language data, 150 spontaneous language samples were analyzed. The mean length of spontaneous language and the degree of vocabulary richness were measured in order to examine the length of spontaneous language in sentence structure and the verbal ability. The results of this study demonstrated a low degree of vocabulary richness, even though the mean length of spontaneous language was not short. The low vocabulary skills of married immigrant women would result in wrong language habits and negatively influence their children's language development. However, the low vocabulary skills of married immigrant women was not considered a serious problem, since they were able to communicate using a small number of words. Therefore, this study emphasized that high-level courses such as reading and writing should be provided and Korean education programs should be performed systematically in order to improve the low vocabulary skills of married immigrant women.

지적장애학생 이야기 표현의 미시구조적 분석

박선희 ( Sun Hee Park ),손은남 ( Eun Nam Son ) 한국지적장애교육학회(구-한국정신지체아교육학회) 2011 지적장애연구 Vol.13 No.4

지적장애학생들의 이야기 쓰기 표현 능력에서 보이는 미시구조적 특성은 어떠한지 알아보기 위하여 지적장애 중학생 11명, MA, SA, LA 일치 초등학생 11명 총 22명을 대상으로 하여 글자 없는 그림 자료에 대한 자발적 쓰기 과제를 실시하였다. 쓰기 자료는 T-unit 단위로 구분하여 미시구조적 측면의 종속절 사용률, 종속절 유형별 사용률, 결속표지 사용률, 어휘 능력, 구문오류율 및 구문오류 하위유형별 오류율을 살펴보았다. 연구에서 나타난 결과는 첫째, 지적장애학생은 일반학생에 비하여 종속절 사용률, 종속절 유형별 사용률이 낮았고, 명사절과 부사절 사용률은 통계적으로 유의하게 낮았다. 둘째, 지적장애학생은 결속표지 총사용률, 적절 결속표지 사용률, 부적절 결속표지 사용률이 일반학생에 비하여 낮았다. 하위범주별 결속표지 사용률에서 지적장애학생은 연결어미, 접속부사를 적절하게 사용하는 비율이 일반학생에 비하여 낮았다. 셋째, 지적장애학생의 어휘 능력에서 전체낱말수와 다른낱말수, 그리고 총 T-unit당 평균낱말수가 일반학생에 비하여 적었다. 넷째, 지적장애학생은 구문오류율이 일반학생보다 높았고, 구문오류 유형별 오류율에서도 일반학생에 비하여 높았다. 이러한 결과를 통해 지적장애학생의 쓰기 지도에서 좀 더 효율적이고 응집성 있는 문장의 표현이 이루어 질 수 있는 중재 전략이 제시되어야 할 것이다. The purpose of the present study was to investigate the microstructure analysis of narrative writing abilities of students with intellectual disabilities. For this, two groups were compared in the study. 11 students with intellectual disabilities and MA, SA, LA matched 11 elementary school-age students participated in narrative write task. We used T-unit classification method to divide the data based on the usage ratio of subordinate clause, the usage ratio by type of subordinate clause, the usage ratio of cohesive marker, the usage ratio of cohesive marker by subdivided category, number of total words(NTW), number of different words(NDW) and the average number of words per T-unit(MLT-w), the percentage of syntax errors, and the percentage of syntax error by subdivided category for analysis. The study results are as follows; The percentage of subordinate clause and subordinate clause by type were significantly lower in students with intellectual disabilities than elementary school-age students. In particular, the use of noun clause and adverb clause were significantly low among the students with in terms of statistical terms. The total percentage of cohesive marker, proper percentage of cohesive marker, improper percentage of cohesive marker were lower among students with intellectual disabilities than among those elementary school-age students in statistical terms. And for improper percentage of cohesive marker, especially in transition words was significantly lower in the students than elementary school-age students. The number of total words, number of different words and the average number of words per T-unit used for narrative written by students with intellectual disabilities, it turned out that the number lower than that of elementary school-age students. In particular, number of different words and the average number of words per T-unit were significantly lower students with intellectual disabilities than elementary school-age students. The percentage of syntax errors was significantly higher in students with intellectual disabilities than elementary school-age students. And syntax error by subdivided category was high in students with intellectual disabilities than middle school students.

20대와 70대 성인화자의 자발화 정보전달력에 관한 연구

이옥분(Ok Bun Lee),박상희(Sang Hee Park),손은남(Eun Nam Son) 한국언어치료학회 2011 言語治療硏究 Vol.20 No.4

The purpose of this study was to identify characteristics of a correct information unit (CIU) in spontaneous speech by healthy adults. CIU is a meaningful method to measure communicative informativeness in daily life. This study strove to determine the level of information in healthy spoken utterances and to prepare comparative data for adults with communication disorders. Forty people in their 20s (YG group) and 35 people in their 70s (OD group) (female 40 and male 35) conducted speech tasks for speech sampling. The topic was ‘a story of soap opera and an event in your current life’. Three hundred spoken words were selected for the analysis. T-test and repeated measure ANOVA were used for identifying the differences among groups (female and male and YG and OD). The results of this study were as follows/First, there were significant differences between female and male groups in all informative variables. Second, there was only a significant difference in CIU rate between YG group and OD group. Thirdly, DCIU, CIU rate, per CIU, and per UCIU were related variables with making differences among groups.