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이석원 낭만음악사 2003 낭만음악 Vol.- No.58
지금까지 악기 음향학에서 다루었던 현악기와 건반악기 관악기는 대부분 시대적 필요에 따라 구조와 기능이 바뀌었음을 보았다. 이들 악기는 서양 고전음악 문화의 산물이며, 음악양식의 변화에 따라, 또 연주 환경이 달라짐에 따라 악기와 연주법 역시 변화하였음을 말해준다. 그러나 인간의 목소리는 어느 시대, 어느 지역에든 공통적으로 있어온 악기이다. 아담 스미스가 “노래와 춤은 인간의 가장 기본적인 본능”이라고 말했으리만큼, 인간은 동서고금을 막론하고 본능적으로 목청을 이용해 노래를 불러왔다. 이 연재의 마지막 회가 될 이번 장에서는 인성을 낼 수 있는 악기로서 인체의 구조와 기능, 그리고 인성의 여러 가지 요소에 관해 살펴본다.
훈련유형에 따른 장애인 직업훈련사업의 효과 : 통합훈련과 전용훈련의 비교분석
이석원,박애린 한국장애인고용공단 고용개발원 2010 장애와 고용 Vol.20 No.3
본 연구는‘현재 우리나라에서 수행되고 있는 형태의 장애인 통합 직업훈련이 전용훈련에 비해서 어떻게 다른 효과성을 갖는가?’를 실증적으로 검증하고‘만약 우리나라의 통합 직업훈련사업의 효과가 선진국에서 경험하였던 긍정적 효과성과 다른 형태로 나타날 경우 그 이유가 무엇인가?’라는 물음에 대한 답을 실증적 분석결과를 바탕으로 추론하고자 수행되었다. 분석과정에 존재할 수 있는 선택편의의 가능성을 계량경제학적 방법으로 통제하여 분석한 결과 장애인 통합훈련과 전용훈련에는 긍정적 효과와 부정적 효과 모두가 혼재하고 있는 것으로 밝혀졌다. 전용훈련은 동료학습효과 및 네트워킹 효과 등의 편익을 발생시킬 수 있는‘통합’적 사업요소가, 통합훈련은 장애인의 장애수요에 부합하는 지원서비스 및 편의를 제공하는‘지원’적 사업요소가 결여되어 있다는 점이 문제점인 것으로 판단되며, 향후 장애인 직업훈련사업은 통합요소와 지원요소를 융합하여 양 사업요소의 편익을 모두 누릴 수 있는‘통합적 지원훈련사업’으로 개편할 필요가 있다. This study was conducted to seek answers to the following two questions: “How different is the effect of inclusive training for disabled workers currently in place in Korea from that of separate training?”, and “If the effect of inclusive training in Korea is manifested somewhat differently from that of inclusive training in other industrialized countries, what would be the possible reasons?” We analyzed empirical data with particular attention to controlling for possible selection bias that can affect the validity of the impact estimates. Our findings indicate that both inclusive and separate training systems have both positive and negative impacts. The reasons for the negative sides were turned to be; for the separate training, the lack of ‘inclusive factors’ which may create peer-learning effects and networking effects, and for the inclusive training, the lack of ‘supportive factors’ which may provide supportive services and accomodations corresponding to disability demands. We concluded that the current inclusive training system needs to be modified as “inclusive and supportive” training system.
Al-Si 합금 열간단조품 내부의 판상 결함의 초음파 특성
이석원,전만수,이준현 한국비파괴검사학회 2001 한국비파괴검사학회지 Vol.21 No.6
본 연구에서는 Al-Si 합금 열간단조품 내부 판상 결함을 탐지하기 위한 초음파평가 기법을 확립하였다. 이를 위하여 내부에 존재하는 여러 가지 판상 결함의 초음파 특성을 실험적으로 구하였으며, 펄스-반사법을 적응하여 초음파 탐상신호에 대한 내부 판상 결함의 각도 등이 초음파 수신신호의 형태에 미치는 영향을 평가하였다. 한편 결함위치에 따른 초음파 신호특성을 규명하기 위하여 단조품 가장자리 부위에 존재하는 내부 판상 결함의 초음파 수신신호 특성을 평가하였으며, 본 시험편에 대한 초음파 투과법 적용 한계에 대하여 고찰하였다. 나아가 500개 이상의 파단 실험을 통해 제시된 초음파 평가기법의 신뢰성을 확인하였다. A nondestructive evaluation technique for detecting internal defects of an hot forged Al-Si allyoy part is established in this study. Ultrasonic characteristics of various internal planar defects are investigated by experiments for establishing a reliable test procedure. The effect of the angle between ultrasonic energy propagation directions and planar defects on the ultrasonic signal configuration is evaluated in the pulse-echo technique. A characteristic of ultrasonic signal for the internal planar defect located near the edge is also evaluated. The applicability of the through-transmission technique is also discussed. Reliability of the presented approach is validated by the destructive testing for more than 50 specimens.
탁구경기 내용에 관한 조사연구 : 서어비스를 중심으로 Centered with Service
이석원,임광철 경희대학교 체육대학 한국체육과학연구소 1981 體育學論文集 Vol.9 No.-
This is investigated between service and receiving for the subject of 52 team players of 11 teams among teams participated in national athletic games ping-pong tournament for the year of 1981. (5 from Dong Incheon High School team, 4 from Kyungbuk High School team, 5 from Chungbuk High School team, 5 from Hanseong University team, 5 from Masan University team, 5 from Kangwon University team, 4 from Kyunggi-do R.0.K. Army team, 5 from The Seoul Trust Bank team, 5 from The Kwangju Bank team and representative team from Kangwon-do, Sion High School team) And the conclusion is shown as follows. (1) Viewing classification of services in each teams, it was appeared as total 924 units from boys high school teams (four hand sideway turning service 167 units, four hand cutting service 161 units, back hand cutting service 231 units, back hand sideway turning service 70 units, other service 295 units). Total 669 units were come from men's university teams. Among them, back hand service was shown extreamly much as total 266 units and nextly it was shown in order of four hand cutting service 115 units, four hand sideway truing service 74 units, back hand sideway turning service 63, others 151 units. Man and female ordinary teams showed total 548 units, yet back hand cutting showed extrealmy much as 170 units, while it was shown as four hand cutting 146, units four hand sideway turning 56 units, straight 56 units, others 120 units by the order. (2) Viewing classification of service shown individually by each teams, player Song, Hun Bae (Dong Incheon High School) showed four hand sideway turning service 2 units in 3rd tournament game, vertical turning service 1 unit, drive long service 1 unit, Knuckle serivce 1 unit, four hand cutting service 5 units, and back hand cutting service 5 units. Accordingly, cutting service was appeared as highest ranking among them. Meanwhile, viewing from player Kwon, Oh Taek of men's university team, the player showed back hand sideway turning 1 unit in the 2nd tournament game, four hand sideway turning service 4 units, back hand cutting service 14 units and straight 1 unit. So, it was shown too that back hand cutting service obtained extreamly much. Also, in view from male and female ordinary team, player kim, Myung Ja from The Trust Bank showed knuck service 1 unit, four hand cutting service 12 units, back hand cutting service 5 units and straight 1 unit, in the 2nd tournament game. (3) To investigate function of receiving, total 924 units of receivings were shown from high school team, while among them, cutting was shown as extreamly much with 447 units and extreamly nextly it was appeared as driving attack 151, short 148, and others 178 units. In view from male and female ordinary teams, among total 548 units, cutting was shown as 173 units, smashing as 120 units, driving attack as 90, and others as 165 units. Cutting was used extreamly much too. (4) In view of relationship between service and scores, it was appeared as scores 454 units at time of service among service total 924 units from bosys high school teams, and while it was seen as out of scores 439 units, as service miss 8 units, as receiving miss 2 units. In view of men's university teams, among service total 669 units, it was appeared as scores 323, out of scores 330, serve miss 3 units, receiving miss 13 units at time of service. In this case, they didn't relate rightly between service and scores. Also, in case of male and female ordinary teams, it was appeared scores 264 units, out of scores 255 units, scores 255 units, serve miss 10 units, receive miss 19 units. (5) Investigating glinding point at time of service, it was also appeared as 53.8 units in right short point among average 231 units from high school teams, while it was appeared as 43.8 units in left long point, as 37.3 units in the middle, as 66.8 units in left short point and 29.5 units in right long point. Meanwhile, viewing from men's university teams, it was also appeared as 15.0 units in right long point, as 43.7 units in left long point, 29.0 units in the middle, and as 34.3 units in right short point and as 101.0 units in left short point. In case of male and female ordinary teams, it was also appeared as 155 units in right short point, as 130 units in left short point, as 96 units in right long point, as 91 units in left long point and as 76 units in the middle among total 548 units.
이석원 이화여자대학교 음악연구소 1997 이화음악논집 Vol.1 No.-
The bell-shaped curve, Known as Wundt curve, indicates the relationship between the complexity level of stimuli and the personal preference of receiver. The complexity level influences personal preference. One would not like a piece of music which is too complex and hard to apprehend; nor would he/she like a song which is too simple, redunant, and therefore, not rewarding. As Glen Haydon points out, great: works of art have "some complexity"and therefore, we do not grow tired of them even after few hearings. Generally speaking, Mozart's works are not very complex in terms of harmony, melodic progression, and form. Then, why don't we get tired of them after repeated hearings? In the present paper, the first 20 measures of his famous Symphony No.40 (K.550) were analyzed in terms of "texture", under the assumption that there must be "some complexity".
탁구 경기력 향상을 위한 연구 : 男女大學 選手를 中心으로 Centered with-university player's
이석원 경희대학교 체육과학연구소 1983 體育學論文集 Vol.11 No.-
This is investigated between service and receiving and third motion and next play and service position and footwork motion for the subject of 8 women's university player's and 8 men's university player's of among team participated in university athletic games table tennis league for the year of 1983. The conclusion is shown as follows. (1) Viewing classification of service Park weun Ju women's university player. It was appeared as results forehand side way service 5 units drive long service 1 units, cutting service 2 units, cut turning service 5, units backhand straight service 3 units, backhand cut service 2 units, backhand cut turning service 2units, it was appeared as results forehand side way service 1 unit forehand cutting service 4 units, forehand cut turning service 4 units, backhand cut turning service 5 units, Kim Tae Su men's university player. (2) To investingate of receiving it was appared as results fore hand cutting 5 units, short 2 units,smashing 4 units,backhand cutting 6 units attaok 2 units,knuckle 1 units,Song Mi Jung women's university player. It was appeared as results forehand cutting 4 units, drive attack 5 units,knuokle 3 units,pushing 1 units,receiving miss 1 unit,and other's 1 unit Park Chang Ik men's university player. (3) View of relationship between service and third motion it was appeared as results driving attack 1 unit,smashing 1 unit,forehand cutting 7 units,backhand cutting 7 units pushing 1 unit,maistake 1 unit,lobbing 1 unit,attack 2 units,Oh Kyung Na women's university player,it was appeared driving attack 2 units,smashing 4 units,forehand cutting 3 units,backhand cutting 2 units,pushing 2 units,mistake 3 units,attack 3 units,and the others 1 unit Kim Tae Su men's university player. (4) In view of relationship between third motion and fourth motion it was appeared attack miss 2 units,receiving miss 1 unit,driving 1 unit,smashing 3 units,topspin 1 unit,backhand cutting 2 units,short 1 unit,attack 3 units,and other's 1 unit,Hong Su Ian women's university player,it was appeared as a results attack miss 2 units driving attack 3 units smashing 4 units forehand cutting 2 units top spin 2 units backhand cutting 2 units attack 2 units Nam Sumg Kane men's university player. (5) In view of relationship between fourth motion and motion it was appeared ralley 2 units,attack miss 1 unit,receiving miss 1 unit,receiving miss 1 unit,driving attack 1 unit,smashing 2 units,knuckle 1 unit,attack 3 units,Ji Nam Yong wo men's university player. It was appeared as results ralley 2 units,attack miss 1 unit,receiving miss 1 unit,driving attack 3 units,smashing 3 units,forehand cutting 2 units,backhand cutting 1 unit,attack 2 units,Nam Sung Kane men's university player. (6) In view of relationship between service position and footwork it was appeared forehand position 10 units,backhand position 12 units,middle position 1 unit, Song Mi Jung women's university player,it was appeared as results forehand position 10 units,backhand position 9 units,middle position 1 unit,footwalk miss 1 unit,Park Chang Ik men's university player.