http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : ( Seung Hwan Jang ) (검색결과 1,151 건)
- 무료
- 기관 내 무료
- 유료
-
제강 전로 및 고로 슬래그를 이용한 인제거 기법에 관한 기초연구
이승환,장정화 대한상하수도학회 2004 상하수도학회지 Vol.18 No.2
In this study, several series of experiments were conducted to investigate the phosphorus (P) removal process in slag-containing solution using fumace and converter slags. High amount of OH-, Ca^(2+) and alkalinity were discharged from the slags and hydroxyapatites [Ca_(5)(PO₄)₃(OH)] were kept accumulated on the surface of slag. P removal capacity of the slag decreased with the increase of slag dosage. The maximum capacity was found to be 11.25 mug at the converter slag. Converter slag adsorbed P more than fumace slag(about four times in average). An experimental study on the effect of pH shows that the percentage removal of P increased upto 30% at the pH range of 56 than that of abave pH 8. Langmuir isotherm constants gave a better correlation than Freundlich ones. P removal amount in the presence of NH₄^(+) was less compared to the one in the absence of NH₄^(+). Maximum percentage reduction was 23%.
-
-
김장묵,김대식,백승혁,한동렬,김희중,백병준,오천환 순천향의학연구소 2000 Journal of Soonchunhyang Medical Science Vol.6 No.2
Background and Objectives : Branchial cleft anomalies are encountered rarely in clinical practice. We reviewed medical records of branchial cleft anomalies according to age and sex distribution, site distribution, characteristics of mass on physical examination, location of mass, preoperative diagnosis, type of branchial cleft cyst and report our experience with 25 cases of branchial cleft anomalies. Materials and Methods : A review of medical records was performed on 25 cases of branchial cleft anomalies diagnosed in pathologic report from January, 1990 to March, 2000. Result : Sex distribution was 11 male and 14 female, age distribution was most common in third decade which was 8 cases(32%). Site distribution was predominant in left side(13 cases), and in physical examination, the characteristics of the mass was nontender(76%), mobile(60%), soft(80%). The lesion site was submandibular area in 2 cases, upper 1/3 portion of sternocleidomastoid muscle(SCM) in 2 cases, middle 1/3 portion of SCM in 20 cases and parotid area in 1 case. The preoperative diagnosis was branchial cleft cyst in 16 cases, cervical lymphadenitis in 3 cases, tuberculous lymphadenitis in 3 cases, branchial cleft fistula in 1 case, dermoid cyst in 1 case and parotid mass in 1 case. Among 25 cases, first branchial cleft cyst was seen in 4 cases, second branchial cleft cyst in 20 cases and second branchial cleft fistula in 1 case. Conclusion : The clinical history of recurrent neck inflammatory episodes in young patients and nontender, mobile, soft neck mass should raise the suspicion of this entity. Investigation using CT scanning in combination with aspiration is useful. Treatment of all branchial cleft anomalies is complete surgical excision because there is lack of spontaneous regression, a high rate of recurrent infection, the possibility of other diagnosis, and rare malignant degeneration. Complete removal without complications depends on a good understanding of regional embryogenesis, a knowledge of the surrounding structure, and awareness of the different anatomical presentation.
-
정장표,김상렬,장영환,이승훈 경성대학교 공학기술연구소 1999 공학기술연구지 Vol.6 No.-
Environmental confliction among Northeast Asia region is increasing because of trans-boundary atmospheric pollution problems. Therefore, We need proper control and management plan based on the expect estimation of inflow and outflow of long-range air pollutants in order to reduce the influence and the international confliction among the Asia nations. According to the prior studies on trans-boundary air pollution phenomena. It is necessary to evaluate the characteristics and levels of background concentration of trans-boundary air pollutants. Therefore, this study was focused on the background concentration characteristics of ?? and some ionic and gaseous phase materials, sampled at Dongback sum in Pusan using 3 stage filter pack. And meteorological factors were measured anal analyzed to evaluate the relationship between the concentration characteristic and meteorological data. From this study, it was obtained that the total average ?? mass concentration were 32.54±6.42㎍/㎡, and the average concentration of ion phase components in PM? were 6.02(??), 2.65(??), 1.34(??), 2.99(??), 0.33(??), 0.63(??), 0.03(??) and 0.16(??), respectively and the average concentration of gas phase components in PM? were 0.48(HNO₃), 0.46(HCl), 0.34(SO₂), and 0.06(HF), respectively. The components measured high correlation coefficient were ??(0.71, 0.84), ??(0.74, 0.88), ??(0.76, 0.77), and ??(0.996, 0.81), respectively.
-
-
허천,장진우,박승환 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6
The purpose of this study is to analyze the motivation and degree of satisfaction of marathon runners. The subjects are composed of 295 members of marathon clubs in Kwang Won Kung Kee provinces. The result of this study is as follows. First, as a result of analyzing the involvement motivation of marathon runners among demographic characteristics, self-esteem sub variable shoved statistically significant difference according to sex, and the sub variable of psychological coping·self-esteem·social recognition showed statistically significant difference according to age. In addition, the sub variabie of life-meaning·psychological coring·self-esteem showed statistically significant difference according to the final education years, and the sub variable of life meaning·psychological coping·self-esteem·striving·social recognition showed statistically significant difference according to job, and the sub variabie of life meaning·psychological coping·self-esteem·competition·health orientation·social recognition showed statistically significant difference according to monthly income. Second, as a result of analyzing the degree of satisfaction among demographic characteristics in marathon runners, physical satisfaction sub variabie showed statistically significant difference according to sex, and the sub variable of educational·social·psychological satisfaction showed statistically significant difference according to the final education years, job, monthly income.
-
김연희,장은혜,고명환,신승훈,양경혜,손진훈 한국뇌학회 2002 한국뇌학회지 Vol.2 No.2
본 연구는 fMRI를 사용하여 정서유발단어에 의한 주의이동과 관련한 뇌신경망을 규명하기 위하여 12명의 오른손잡이 여대생을 대상으로 수행하였다. fMRI 실험을 위한 뇌활성화 과제는 예비실험을 통하여 선정된 행복, 슬픔, 위협에 해당하는 각각 36개씩의 단어와 각 단어의 짝을 이루기 위한 중성단어를 이용하여 변형된 Posner 패러다임을 블록디자인으로 고안하였다. fMRI 영상은 1.5T Simens Vision scanner를 사용하여 실시하였으며, single-shot EPI 기법으로(TR/TE:3840/40ms, flip angle: 90, FOV: 220, 64x64 matrix, Slice thickness: 6mm) 이미지를 얻었고 피험자의 반응시간을 기록하였다. 자료분석은 SPM-99 소프트웨어를 사용하였다. 정서유발단어는 중성단어에 비하여 반응시간이 의미있게 빨라 효과적인 주의이동이 일어났음을 알 수 있었다. 정서유발단어와 중성단어에 의한 뇌활성화 상태를 감산분석한 결과, 좌측 상두정엽, 양측 후두엽 및 소뇌에서 뇌활성화를 보였고, 이들 영역은 정서유발단어에 의한 주의이동시 특징적으로 활성이 일어나는 뇌영역임을 보여주었다. 또한 여러 가지 정서가를 가진 단어에 의해 유발되는 주의의 정도가 특징적인 신경망의 활성과 관련되어 있음을 알 수 있었다. The purpose of this study is to delineate the neural network related to the shift of attention and its modulation by emotion-provoking words using functional MRI (fMRI). Twelve right-handed normal female volunteers participated in fMRI study. Their mean age was 24 years and the mean modified Edinburgh score was +90. Emotion-provoking words representing happy, sad, threatened, and neutral emotional valences respectively were chosen by the assessment of 60 normal volunteers using semantic differentiation and Mannequin scales. The activation tasks were designed using modified Posner's paradigm to have 4 blocks of each emotional and control periods, Imaging was conducted on a 1.5T Siemens Vision scanner. Single-shot echoplanar images (TR/TE = 3840/40 ms, flip angle = 90, FOV = 220, matrix = 62 ? 64, slice thickness = 6㎜) were acquired in 20 contiguous slices parallel to the AC_PC line as well as conventional T1-weighted images. Response times were obtained during the scanning, Imaging data were realigned, coregistered, normalized, smoothed, and statistically analyzed in group using SPM-99 software. The results showed that emotional valence of word stimuli produced the effect of attentional engagement. The left superior parietal, inferior frontal, bilateral occipital lobes and cerebellum were main area of modulation of attentional network by emotional words stimuli. The different extent of brain activation induced by different emotion-provoking words were determined.
-
구경완,이근복,장종국,김재홍,김영환,최제영,이승훈 永同大學校 1997 硏究論叢 Vol.3 No.1
본 연구는 각종 첨단 기자재를 활용한 강의 현대화 방안을 모색함으로서 공학교육의 효율성을 도모하고 학생들의 학습동기를 유발하여 창조적 능력을 갖츤 전문기술 인력을 양성하는 데 도움을 주고자 하는 것이다. 이를 위하여 현행 공학교육의 현황과 문제점을 분석하고 강의 현대화 사례를 조사하여 본 연구의 기초자료로 삼고자 하였으며, 학부·전공별 강의 현대화 추진 실태분석 및 개선방안을 모색한 후 이상의 연구결과를 종합하여 향후의 강의 형대화 추진방향을 걸정하였다. This study aims to help bring up the well-skilled and creative engineers by searching the modernization of education using various high technology facilities. For this, we analyzed the general condition and problems of current engineering education and surveyed the case study of the modernization of education as basic study. After analyzing the existing situation of promotion searching the proper improvement methods of it, we proposed the new direction of the modernization of education from now on.
-
김종민,이웅기,장근실,양환석,허진경,박승규 朝鮮大學校 統計硏究所 2007 統計硏究所論文誌 Vol.9 No.1
최근 사용자 친화형 유저 인터페이스 구현을 위해 인간의 손 형상을 실시간으로 인식하는 연구의 중요성이 부각되고 있다. 그러나 인간의 손은 자유도가 크기 때문에 손 형상을 정확히 인식하기란 매우 어렵고 또한 피부색과 유사한 색을 가지는 복잡한 배경에서는 더욱 곤란하다. 본 논문에서는 별도의 센서를 부착하지 않고 카메라를 사용하여 피부색 정보에 의한 손 형상을 분할한 후 손가락 끝 점을 찾는다. 찾은 손가락 끝 점을 이용하여 방향을 탐지하는 알고리즘에 대해 기술한다. 이 방법은 템플리트 매칭을 이용하여 손가락 끝 점을 탐색한 후 찾은 손가락 끝 점과 손목의 중심을 이용하여 전, 후, 좌, 우 방향을 탐지한다. 제안하는 방법을 이용하여 3D 가상현실 공간에서의 네비게이션(Navigation)에 응용하였으며, 실험결과 전진, 후진 및 좌측, 우측의 방향전환도 매우 좋은 결과를 보였다. 또한 본 논문에서 제안하는 방법은 마우스, 키보드, 조이스틱 등의 조작 없이 전, 후, 좌, 우 방향전환을 사용자가 직관적으로 지시함으로써 보다 자연스러운 인간과 컴퓨터의 상호작용을 제공할 수 있을 것이다.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
