원격탐사를 위한 병렬계산 기법

김형중,장태정,김희원,김형수,이정문,장순자 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

원격탐사에 사용되는 편미분방정식을 고속으로 풀기 위한 기법을 프로그래밍하고 성능을 향상시킬 수 있는 방법을 제시했다. 미지수가 30만개 이상되는 복소수(non-Hermitian) 행렬의 해를 구하는 프로그램을 작성했다. 이 프로그램은 C와 PVM에 기반을 두고 있다. 수렴속도를 향상시키기 위해 대각 스케일링을 이용했다. 통신속도의 개선을 위해 데이터 압축 기법을 이용했다. 수렴속도를 측정 제시함으로써 실제 문제 적용에 참고할 수 있다. Network-based computing with cluster of personal computers or workstations recently has become an important and successful technique. Network-based computing enables fast computation and resolves short of storage with computers on the desks. Cluster of inexpensive computers offers them aggregated computing power and storage to challenge very large-scale problems. Iterative solvers are used for the large sparse linear systems. Preconditioners accelerate the rate of convergence of the iterative solvers. However, parallelization accelerate the rate of convergence of the iterative solvers. However, parallelization of preconditioners is far from satisfaction so far. Thus, the simplest diagonal scaling is a good alternative for improved convergence and easy parallelization. In order to reduce communication overhead, a data compression technique is considered. Data communication time can be reduced at the cost of convergence rate. MATLAB simulation result is given in this paper. This method is effective to cluster of computers connected through slow networks.

Effects of Phenytoin and Diazepam on the Seizure Activity in the Cortical Dysplasia Animal Models

Kim, Si-Hyung,Choi, In-Sun,Cho, Jin-Hwa,Park, Eun-Ju,Jang, Il-Sung,Choi, Byung-Ju,Kim, Hyun-Jung,Kim, Young-Jin,Nam, Soon-Hyeun The Korean Academy of Oral Biology 2006 International Journal of Oral Biology Vol.31 No.2

Dysplasia-associated seizure disorders are markedly resistant to pharmacological intervention. Relatively little research has been conducted studying the effects of antiepileptic drugs(AEDs) on seizure activity in a rat model of dysplasia. We have used rats exposed to methylazoxymethanol acetate(MAM) in utero, an animal model featuring nodular heterotopia, to investigate the effects of AEDs in the dysplastic brain. Pilocarpine was used to induce acute seizure in MAM-exposed and age-matched vehicle-injucted control animals. Field potential recordings were used to monitor amplitude and numbers population spikes, and paired pulse inhibition in response to stimulation of commissural pathway. Two commonly used AEDs were tested: diazepam 5, 2.5mg/kg;phenytoin 40, 60mg/kg. Diazepam(DZP) and phenytoin(PHT) reduced the amplitude of population spike in control and MAM-exposed rats. However, the amplitude of population spike was nearly eliminated in control rats as compared to the MAM-exposed rats. Pharmaco-resistance was tested by measuring seizure latencies in awake rats after pilocarpine administration(320mg/kg, i.p.) with and without pretreatment with AEDs. Pre-treatment with PHT 60 mg prolonged seizure latency in control rats, but not in MAM-exposed animals. The main findings of this study are that acute seizures initiated in MAM-exposed rats are relatively resistant to standard AEDs assessed in vivo. These data suggest that animal model with cortical dysplasia can be used to screen the effects of potential AEDs.

우관상동맥 개구부 완전 폐쇄가 동반된 대동맥 판상부 협착증 1례

임상현,김종진,김희열,진승원,전희경,노태호,채장성,김재형,홍순조,최규보,윤정섭,김치경 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

관동맥질환에서 저밀도 지단백 입자 크기의 분포

임효영,김인숙,승기배,강동헌,전두수,장기육,박준철,이수영,홍순조,최규보 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.8

Floristic study of Jang-do (Isl.) in Korea

Son, Hyun-Deok,Gwon, Soon-Gyo,Jang, Jeong-Won,Sun, Eun-Mi,Kim, Byeol-Ah,Im, Hyoung-Tak The National Institute of Biological Resources 2013 Journal of species research Vol.2 No.2

We investigated the flora of Jang-do (Isl.), an island of the Heuksan archipelago, located in Heuksan-myeon, Shinan-gun, Jeollanam-do and discussed the remarkable plants found there. Thirteen-field trips (total 27 days) were completed from May of 2004 to May of 2013. As a result, we identified the distribution of 423 taxa in Jang-do (Isl.), comprising 104 families, 285 genera, 335 species, 78 varieties and 10 forms. There are a total of 95 taxa of floristic regional indicator plants. The floristic regional indicators are as follows; four taxa of level V such as Impatiens furcillata, four taxa of level IV such as Hosta yingeri, 14 taxa of level III such as Ophioglossum vulgatum, 5 taxa of level II, and 58 taxa of level I. In addition 10 red data plants, 2 vulnerable species (VU) including Calanthe striata for. sieboldii, and 4 least concern species (LC) like Ardisia crenata, 2 not evaluated species (NE) such as Hosta yingeri, were found in the investigated area. An unrecorded species, Fragaria (Rosaceae), was found in a forest of Jang-do (Isl.) for the first time in Korea.

제6차 교육과정에 따라 편찬된 초등학교 자연 교과서의 분석(Ⅱ)

김광명,장병기,이대형,신순임,강태완 춘천교육대학교 과학교육연구소 1997 과학교육연구 Vol.20 No.-

The Variation of Winter Buds among 10 Selected Populations of Kalopanax septemlobus Koidz. in Korea

Kim,Sea-Hyun,Ahn,Young-sang,Jung,Hyun-Kwon,Jang,Yong-Seok,Park,Hyung-Soon 한국자원식물학회 2002 Plant Resources Vol.5 No.3

The objective of this study was to understand the conservation of gene resources and provide information for mass selection of winter bud characters among the selected populations of Kalopanax septemlobus Koidz using analysis of variance(ANOVA) tests. The obtained results are shown below; 1. Ten populations of K. septemlobus were selected for the study of the variation of winter bud characters in Korea. The results of the analysis of variance(ANOVA) tests shows that there were statistically significant differences in all of the winter bud characters among those populations. 2. Correlation analysis shows that width between Height and DBH(Diameter at breast height) characters have negative relationship with all of the characters, as ABL(Apical branch length), ABW(Apical branch width), AWBL(Apical branch winter bud length), AWBW(Apical branch winter bud width), ABT(Apical branch No. of thorns), ABLB(Apical branch No. of lateral bud) and LBL(Lateral branch length), LBW(Lateral branch width), LBT(Lateral branch No. of thorns), LBLB(Lateral branch No. of lateral bud). 3. The result of principal component analysis(PCA) for winter buds showed that the first principal components(PC s) to the fourth principal component explains about 78% of the total variation. The first principal component(PC) was correlated with AWBW, LWBW, and LBL and the ratio of ABL/ABW and LBL/LBW out of 16 winter bud characters. The second principal component correlated with ABL, ABW, ABLB, LWBL(Lateral branch winter bud length), and LBW and the ratio of AWBL/AWBW. The third principal component correlated with ABL, ABW, LWBL, LBL, and the ratio of LBL/LBW. The fourth principal component correlated with LBL and the ratio of LWBL/LWBW(Lateral branch winter bud width), LBL/LBW. Therefore, these characters were important to analysis of the variation for winter bud characters among selected populations of K. septemlobus in Korea. 4. Cluster analysis using the average linkage method based on 10 selected populations for the 16 winter bud characters of K. septemlobus in Korea showed a clustering into two groups by level of distance 1.1(Fig. 3). As can be seen in Fig. 3, Group I consisted of three areas(Mt. Sori, Mt. Balwang and Mt. Worak) and Group Ⅱ contisted of seven areas(Suwon, Mt. Chuwang, Mt. Kyeryong, Mt. Kaji, Mt. Jiri, Muan, and Mt. Halla). The result of cluster analysis for winter bud characters corresponded well with principal component analysis, as is shown in Fig. 2.

일할 수밖에 없는 여성노인의 다중차별 경험에 관한 연구

정순둘,장명선,이은진,송보가,김재민 이화여자대학교 젠더법학연구소 2021 이화젠더법학 Vol.13 No.2

본 연구는 노동시장에서 일할 수밖에 없는 여성노인의 다중차별 경험을 파악하여 이들의 노동권을 보호하고 차별을 해소하기 위한 방안을 마련하는데 목적이 있다. 이를 위해 노인집중 고용 업종에 종사하는 60세 이상 여성노인 14명을 대상으로 심층면접조사를 진행하였다. 본 연구 결과, 일할 수밖에 없는 여성노인들은 노동시장의 입직 단계에서부터 성별, 연령, 건강의 다중차별에 의한 상시적인 고용불안과 사회안전망에서의 배제를 경험하였다. 또한 일하는 조직의 불평등 지배체제 특성으로 일상화된 고용불안, 열악한 노동조건과 복지제도의 미비, 노인친화적이지 않은 노동 강도와 근무 제공, 노인 노동 평가 절하에 따른 조직 위계 문화와 관행, 과도한 노동 제공의 요구와 성희롱의 일상화, 조직 내에서 이해를 대변하는 데 어려움을 경험하는 것으로 나타났다. 본 연구 결과를 바탕으로 일할 수밖에 없는 여성노인의 다중차별을 해소하기 위한 법과 제도의 개선, 사회안전망 강화, 여성노인 노동자 이해대변단체 조직화 지원을 제언하였다. This study aims to (i) identify the experience of multiple discrimination among older women, who have no choice but to work in the labor market; (ii) protect their labor rights; and (iii) resolve discrimination. To conduct this study, we performed an in-depth interview survey with 14 older women aged 60 or older who are engaged in the elderly intensive employment sector. Under the result of this study, older women, who have no choice but to work, have experienced constant employment insecurity and exclusion from the social safety net due to multiple discrimination in gender, age, and health from the employment stage in the labor market. In addition, because of inequality organizations, they have experienced as follows: employment insecurity that became common, poor labor conditions and inadequate welfare systems, unfriendly labor intensity and provision of work, organizational hierarchical culture and practices due to devaluation of elderly labor, demand for excessive labor provision and sexual harassment routinely, and difficulties in representing understanding within the organization. Based on the results of this study, therefore, this study provides suggestions to resolve the multiple discrimination of older women, who have no choice but to work, including but no limited to, improve laws and systems, strengthen the social safety net, and organize support for the organization of interest groups for older women workers.

수치지도 작성을 위한 기호 추출 및 인식에 관한 연구

김민환,장순형,이상훈 釜山大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.57 No.-

지도 영상에서 기호를 자동으로 인식하는 작업은 종이지도 제작 및 스캐닝 과정에서의 왜곡으로 인해 많은 어려움을 겪고 있다. 본 논문에서는, 지도 영상을 조사하여 기호일 가능성이 높은 후보 대상물들을 고립된 경우와 중첩된 경우로 분리하여 처리하는 방법을 제안한다. 고립된 후보 대상물들은 전 처리 과정을 거친 후 기호로 인식하며, 중첩된 후보 대상물들은 위치만을 자동으로 추출한 후 사용자가 효율적으로 입력할 수 있도록 한다. 해상도 400dpi 등고판 영상에 대한 실험을 통하여, 본 논문에서 제안한 기호 추출 및 인식 방법의 타당성을 검증하였다. It is very difficult to recognize the symbols within map image automatically because of the distortion taking place through the process of producing or scanning the paper map. In this thesis, specific method is proposed to divide objects theat are highly possible to become symbols in the map image. The symbols are treated either as isolated or as overlapped symbols, and processed separatively. In case of isolated symbols, they are recognized as symbols through preprocessing, however, in case of isolated symbols, they are recognized as symbols through preprocessing, however, in case of overlapped symbols, just their location are extracted automatically and then shown to users, who are made to input them effciently. Appropriateness of the proposed method on extracting and recognition of symbols is verified through the experiment in scanned map image(400dpi).

영상광고 텍스트 읽기를 위한 교수·학습 방법론

김영순,오장근 경북대학교 사범대학부속 중등교육연구소 2003 중등교육연구 Vol.51 No.2

The aim of this study is to read TV-Ads, to propose its reading methodology, and to promote the educational creativity. In this study, TV-ads are regarded as creative texts in the process of creation, construction, producement, camera-work, and editing. In this respect, TV-ads are avaliable for the class of media literacy. Results of this study made the following teaching-learning model. First, teachers select and pick up the effective TV-ads for the lesson, design the teaching-learning plan, give to students the PPT-text thru mechanical media(personal computer, beam-projector, etc.) Second, students understand and interpret the mechanism of producing TV-ads, write the creative text, and its meaning can be communicated with others.