Do Geminated Consonants in English Really Undergo Degemination?

김수정,김혜경 새한영어영문학회 2006 새한영어영문학 Vol.48 No.4

The general assumption of two identical consonants in a sequence is that the preceding consonant tends not to surface in normal speech. Accordingly, in the area of English teaching, ESL learners are directed to pronounce the geminated consonants as a singleton. We challenge this previous claim about partial deletion of the geminated consonants in English, namely degemination, with phonetic evidence. First, we investigate the phonetic implementation of geminated consonants in English by means of acoustic data produced by native speakers of English. Acoustic data shows that the length of geminated consonants [bb, dd, pp, tt, mm, nn, ss, ʃʃ] is as long as the combined length of single consonants in onset and coda positions, indicating the degemination process does not occur in the gemianted consonants. It contradicts the previous claims. Second, we examine prosodic effects on geminated consonants. Not only are segments influenced by neighboring segments, but the phonetic realization can also vary depending on their prosodic positions in which they appear. The result shows that the length of geminates at the phrase boundary is longer than at the word boundary, suggesting that geminates in higher prosodic levels are produced with greater articulatory magnitude.

兒童行動目錄(CBCL)에 의한 國民學生의 行動問題 調査

홍강의,송혜양,김중술,홍경자,박성수 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.2

This is an epidemiological study of emotional/behavior problems in Korean elementary school children(total 2,399 : 1.236 boys, 1,163 girls) by empolying Children's Behavior Check List(CBCL) developed by Achenbach and Edelbrock(1983), to which 3 problem items were added for this study. A test-retest reliability of CBCL was was assessed by computing the Spearman-Browm correlation and the average correlation among items was. 72. The interparent agreeement was also assessed and the average correaltion between mother and father was. 62. The study subjects were drawm by stratified sampling from 5 schools in Korea ; 3 schools (A, B, C) from Seoul, one school(D) from a medium size city one school (E) from a rural town. School C is located in upper/middle-upper class residential area, School A and D in middle class, and School B and E in lower-middle/lower class. The present paper reports the prevalence of behavioral/emotional problems in relation to sex, grade, locality and socioeconomic variables. Some of the major findings were as follows ; 1) The mean total problem score excluding 3 additional items was 27.28 and did not differ significanthy according to sex and locality(Seoul vs non-Seoul), However, the mean total problem scores were significanthy different from school to school. The lowest score was observed in children of School C(22.15), higher scores for School B(30.89) and E(30.64) and in-between scores for the School A(27.58) and D(25.47). Father's education also had significant effect on the total problem scores : 31.46 for elementary of less 27.79 for middle and high school and 23.05 for college or more. As for to the grade, mean total score was lowest for the first graders(22.12), increasing up until 4th grade(29.83), then decreasing for 5th graders(26.81) and then relatively high score for the 6th graders(29.81). 2) Examination of each 122 problem items revealed that prevalence rate ranged from 2.1% to 61.7% : less than 5% for 13% items, 5-10% for 18 items, 10-20% for 31 items, 20-30% for 25 items, 30-40% for 15 items, 40-50% for 13 items, more than 50% for 7 items. Although sex did not make any difference in total problem scores, examination of the prevalence of each item revealed that 47 problem items were significanthy different between sexes : 26 items were more prevalent in boys and 21 items in girls. The items more prevalent for boys were externalizing problems such as hyperkinetic, aggressive and other behaviors and 21 items, more prevalent for girls were internalizing problems such as emotional and psychosomatic problems. School grade had significant effect in 47 items, only 3 of which showed lower prevalence in the younger children and the prevalence of 39 items were higher in older children. Significant differences were observed in 83 items, and 94 items, respectively according to school and father's education that could be considered to reflect socioeconomic status and it was reavealed that the lower the status, the higher the prevalence in most items. Items more common in upper class tend to be more anxiety-tension related(internalizing) and items more common in lower class tend to be more aggressive, hyperactive and other behavioval problems(externalizing). 3) Brief cross-cultural comparisons between the current study and other studies reported in the literature revealed major differences in several areas. The total problem score for Korean children was much higher than those of American and Dutch children, but lower than those of Canada and Chile. Although most of other studies reported higher total problem scores for boys, than for girls there was no sex difference in total problem score for Korean children. This was reflected in the finding of an almost equal numbers of items(26 for boys, 21 for girls) being more common than the other sex. Analyses by grade(age) also indicate major differences between Korean and American-Dutch children ; In contrast to the finding that total problem score was higher and larger number of items were more common for younger children in American and Dutch studies, they were higher for older children in Korean study. Socioeconomic variables seems to exert far more significant effect on the total score and the prevalence of each items in Korean study, when compared with American and Dutch studies. Further analyses of the data including a comparison with a clinic sample are deferred to another paper and so are the factor analysis results of 122 items into emotional/behavioral syndromes.

성인에서 발병한 지역사회폐렴의 원인으로서 호흡기 바이러스의 역할

김지희,곽영호,나병국,이주연,신구철,정혜선,홍정연,오명돈,정희진,김민자,배현주,김양리,신완식,강재명,우준희,어수택,이환종 대한감염학회 2001 감염 Vol.33 No.1

Purposes : To investigate the viral etiology of community-acquired pneumonia in Korean adults, we have detected respiratory viruses (Respiatory syncytial virus, adenovirus, influenza virus and parainfluenza virus) in the way of prospective, multi-center study. Methods : From July 1997 to April 2000, nasal aspirates or sputum were obtained from adults patients with community pneumonia admitted to the participating hospitals and transferred immediately to the central laboratory at the Seoul National University Children's Hospital. The specimens were divided into three parts. One part was used for indirect immunofluorescent test for respiratory viruses, the other part for the culture of RSV and adenovirus in HEp-2 cell monolayer. The other part was used for the culture of influenza virus and parainfluenza virus in MDCK or LLC-MK2 cell monolayers. Results : Of 317 samples, 32 (10.1%) specimens were positive for viral agent by indirect IF staining or culture, including one dual-infected specimen (adenovirus and parainfluenza virus). Influenza virus was most commonly detected (16 specimens). Parainfluenza virus, adenovirus and RSV were detected in 10, 4 and 3 patients, respectively. All isolated influenza viruses were type A (H3N2 in 9 patients, HIN1 in 2 and unspecified in 5), and 8 out of 10 parainfluenza virus isolates were type 3. Conclusion : Similar to previous reports from other countries, a significant portion of community-acquired pneumonia in Korean adult is caused by respiratory viruses. (Korean J Infect Dis 33:8~14, 2001)

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

A Clustering Scheme for Discovering Congested Routes on Road Networks

He Li,Kyoung Soo Bok,Jong Tae Lim,Byoung Yup Lee,Jae Soo Yoo 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.4

On road networks, the clustering of moving objects is important for traffic monitoring and routes recommendation. The existing schemes find out density route by considering the number of vehicles in a road segment. Since they don’t consider the features of each road segment such as width, length, and directions in a road network, the results are not correct in some real road networks. To overcome such problems, we propose a clustering method for congested routes discovering from the trajectories of moving objects on road networks. The proposed scheme can be divided into three steps. First, it divides each road network into segments with different width, length, and directions. Second, the congested road segments are detected through analyzing the trajectories of moving objects on the road network. The saturation degree of each road segment and the average moving speed of vehicles in a road segment are computed to detect the congested road segments. Finally, we compute the final congested routes by using a clustering scheme. The experimental results showed that the proposed scheme can efficiently discover the congested routes in different directions of the roads.

Catalytic and Structural Properties of Brain Glutamate Decarboxylase

Soo Young Choi,Su Jin Lee,Sang He Jang,Sechan Wee,Joon Ho Choe,Kil Soo Lee 생화학분자생물학회 1993 BMB Reports Vol.26 No.7

An homogeneous glutamate decarboxylase isolated from porcine brain contains 0.8 ㏖ of a tightly bound pyridoxal-5-phosphate per one mole enzyme dimer. Upon addition of exogeneous pyridoxal-5-P, the enzyme acquires maximum catalytic activity. The purified enzyme was deactivated by sulfhydryl reagents and mycotoxin patulin. Recovery from inhibition after the addition of dithiothreitol or 2-mercaptoetnanol suggests that critical sulfhydryl residues in the catalytic domain of the enzyme are connected with catalytic activity, and that the mycotoxin patulin reacts with these sulfhydryl residues of the enzyme.

全南地域 明礬石鑛床의 成因에 關한 硏究

He Soo Moon(文熙壽) 대한자원환경지질학회 1975 자원환경지질 Vol.8 No.4

The south and southwestern parts of Jeonra-namdo has been known as an alunite province in Korea. The alunite deposits investigated for the present study are Okmaisan, Seongsam, Bugog, Gasado south, Gasado north, Jangsando, Dogcheon and Jungyongri deposits. The main purpose of this study is to depict the genetical origin of the alunite deposits. The rocks distributed in the areas mentioned above consist chiefly of rhyolitic tuff, breccia tuff and andesitic tuff of Cretaceous age which represent different episodes of volcanic activities during Cretaceous epoch. The attitude of bedding of the tuffaceous rocks varies from place to place but generally dips very gently. The alunite deposits are embedded mostly in the rhyolitic tuff so that they appear as layered deposits, this occurrence may be the result of stratigraphic and lithologic controls. The result of this study can be summarized as below. The mineral sequence studied by the mineral paragenesis and the result of the spectrograph anlyses is such that (1) alunite was formed at first and pyrophyllite was nearly contemporaneous with alunite but pyrophyllite formation can be recognized as a secondary mineralization products, (2) kaoline was succeeded to form later and hematite finally deposited, and (3) pyrite was deposited from the begining to the end of the above mineralization period. The compositional change of host rocks is such that CaO, SiO₂ and Na₂O were largely removed from the parent rocks and some Al₂O₃ and SO₃ were transported by the solution so as to enrich the rocks. The sequencial process of such mineralization has resulted in forming those distinguish mineral zones; alunite, kaoline, pyrophyllite, silicifide and sulphide zone which manifest irregular shape. These deposits were formed by hydrothermal solution which was possibly low temperature and contained sulphuric acid originated from H₂S and SO₂ gases.

An Efficient Grid Based Routing Scheme in Mobile Ad-hoc Networks

Soo-yong Yoon,Ki-won Seo,Jong-tae Lim,He Li,Kyoung-soo Bok,Jae-soo Yoo 한국콘텐츠학회 2014 한국콘텐츠학회 ICCC 논문집 Vol.- No.-

A Routing Scheme Considering Mobility in Mobile Peer-to-peer Networks

Kyoung Soo Bok,In Gook Son,Jong Tae Lim,He Li,Jae Soo Yoo 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.3

수계 휘발성 유기화합물 온라인 모니터링 시스템의 구성 및 평가

이수형 ( Soo Hyung Lee ),김종환 ( Jong Hwan Kim ),심수용 ( Soo Yong Shim ),최희진 ( Hee Jin Choi ),김세영 ( Se Young Kim ),김희갑 ( He Kap Kim ) 한국물환경학회(구 한국수질보전학회) 2011 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2011 No.-