The Multiple Brain Abscesses Associated with Congenital Pulmonary Arteriovenous Malformations : A Case Report

SeokHan,임동준,Yong-GuChung,Tai-HyoungCho,Seong-JunLim,Woo-JaeKim,Jung-YulPark,Jung-KeunSuh 대한의학회 2002 Journal of Korean medical science Vol.17 No.3

The intelligibility-based approach to the pronunciation teaching of English: experimental evidence of /l/and /r/distinction

Seokhan Kang 한국영어학학회 2015 영어학연구 Vol.21 No.2

Kang, Seokhan. 2015. The Intelligibility-based Approach to the Pronunciation Teaching of English: Experimental Evidence of /l/ and /r/Distinction. English Language and Linguistics 21.2, 61-81. This work tries to support the justification of an intelligibility-based approach to English pronunciation teaching in our EFL educational environment. In this study, both production and perception experiments were conducted for thirty Korean learners of English and ten native English speakers. The production experiment showed that the high proficiency group demonstrates any significant difference of F3 values only in the picture-story telling task which could be more similar as natural conversation. However, their pronunciation could hardly lead to native speakers’ distinctive rating patterns of ‘good pronunciation’. The judgement tests showed that native English raters marked ‘good-enough’ liquids pronunciation even to comparatively severe foreign-accented Korean speech of English which exerted different ranges of F3 from those of native English speakers’ acoustic features. Thus, this study proved that native English raters were tolerant of foreigners’ narrow range of F3 for both liquid sounds, widening the F3 range in judging the ‘good-enough’ liquids. Overall, it implied that we might rely more on the intelligibility principle, not on the native-like accurate pronunciation features in teaching English pronunciation.

The Clinical Characteristics of Lower Lumbar Osteoporotic Compression Fractures Treated by Percutaneous Vertebroplasty : A Comparative Analysis of 120 Cases

Seok Han,Heung-Sik Park,Yong-Hun Pee,Seong-Hoon Oh,장일태 대한척추신경외과학회 2013 Neurospine Vol.10 No.4

Objective: The purpose of this study is to provide accurate understanding of clinical presentations and surgical outcomes as well as to identify the unique characteristics of lower lumbar osteoporotic compression fracture (OCF). Methods: Clinical data were collected from 120 patients who had L3, L4 or L5 percutaneous vertebroplasty (PVP) performed from 2008 to 2012 at the single institute. L4 or L5 PVP patients were classified into group 1 and group 2 was for L3 PVP patients. Medical records were retrospectively investigated at 1 month after PVP. Long term follow-up results were obtained at a median value of 22 months after PVP. Results: 75% of the patients in group 1 were not associated with traumatic events, 71% presenting with leg radiating symptoms and 46% requiring an additional decompressive surgery, more often than those in group 2. These differences are statistically significant (p<0.05). The short term medical record review demonstrated that only 73% of patients in group 1 were ameliorated with regard to back motion pain, whereas those in group 2 reported 87.7% rates of amelioration in identical category (p<0.05). The long term follow up confirmed a significantly worse outcome in group 1, with only 55.7% of patients reporting amelioration in their pain or functional status, but 71.7% rate of amelioration in group 2. Conclusion: The OCFs at the L4 or L5 level have different clinical characteristics from those at upper levels of the lumbar spine.

Cross-directional Development of Prosody

Seokhan Kang,Hyunkee Ahn 서울대학교 언어교육원 2012 語學硏究 Vol.48 No.1

This study examined L2 cross-directional development on the production of prosody features such as fundamental frequency range, speech rate, duration in the boundary word, and declination tiltof intonation. L2 learners of native Korean and English speakers with different levels were compared and analyzed. It was expected that L2 learners would have suprasegmental features more similar to native L1 speakers by the effect of longer immersion, while the variationin L2 acquisition could be found by the effect of background language. Two experiments for Korean learners of English and English learners of Korean were carried out to check the hypothesis. In the first experiment for Korean learners of English, thirty subjects in three groups joined. Also, another experiment was designed for English learners of Korean, in which thirty subjects in three took part. The results showed that L2 longer-immersed groups exerted the similar features of L1 native speakers. As we expected, the direction of L2 development, however, was different. That is, Korean immersed group of English was more native-like by having a wider F0 range, and a comparatively longer duration for the final boundary word, as well as a steeper F0 declination tilt. On the contrary, English immersed group of Korean followed more Korean-like features: a narrower F0 range, and a comparatively longer duration for the final-sentence word, as well as a gentle F0 slope of declination tilt. As a result, both groups have features withsimilar and different patterns at the same time. The similar features are realized in fast speech rate and longer duration in sentence-final words, while the contrastive features are found in F0 range and declination tilt. The result suggests that L2 development is decided by both factors: L1 background language and universal L2 developmental features.

The Prevalence of Osteoarthritis and Risk Factors in the Korean Population: The Sixth Korea National Health and Nutrition Examination Survey (VI-1, 2013)

Seokhan Lee,권영근,Nojin Lee,Keun-Joo Bae,Jihyun Kim,Seokwon Park,Yang Hyun Kim,Kyung-Hwan Cho 대한가정의학회 2019 Korean Journal of Family Medicine Vol.40 No.3

Background: Knee osteoarthritis is highly prevalent, especially among the elderly. However, its risk factors have not been well identified, especially in the Korean population. This study aimed to assess the epidemiologic characteris-tics and risk factors of knee osteoarthritis in the Korean population.Methods: Data of 2,280 (1,295 women) participants of the 2013 Korea National Health and Nutrition Examination Survey aged ≥50 years who underwent knee radiography were analyzed. According to the American College of Rheumatology clinical/radiographic classification criteria, knee osteoarthritis was defined as knee pain and radio-graphic knee osteoarthritis. The association between risk factors and knee osteoarthritis was analyzed using the chi-square test and binominal logistic regression.Results: The participants had an average age of 62.6 years; 56.8% of them were women. The average body mass in-dex was 24.2 kg/m2, and 296 (13%) participants were diagnosed with knee osteoarthritis. After adjustment for mul-tiple risk factors, age of ≥65 years (adjusted odds ratio [OR], 2.552; 95% confidence interval [CI], 1.868–3.486), fe-male sex (OR, 2.050; 95% CI, 1.275–3.295), obesity (body mass index, ≥25.0 kg/m2; OR, 1.563; 95% CI, 1.191–2.051), hypertension (OR, 1.394; 95% CI, 1.052–1.846), low educational level (lower than or equal to elementary school: OR, 4.761; 95% CI, 2.131–10.635; middle school: OR, 3.184; 95% CI, 1.375–7.369), and low strength exercise frequen-cy (<2 times/wk; OR, 1.829; 95% CI, 1.202–2.784) increased the risk of knee osteoarthritis.Conclusion: Old age, sex, obesity, hypertension, low educational level, and low strength exercise frequency were found to be risk factors for knee osteoarthritis.

Efficient Image Transformation and Camera Registration for the Multi-Projector Image Calibration

Seokhan Lee,Soowoong Jeong,Haneul Yu,Guisik Kim,Hanoung Kwak,Eunju Kang,Sangkeun Lee 중앙대학교 영상콘텐츠융합연구소 2016 TechArt :Journal of Arts and Imaging Science Vol.3 No.1

The Effect of Language Immersion on Second Language Intonation

( Seokhan Kang ) 범태평양응용언어학회 2013 범태평양응용언어학회지 Vol.17 No.1

This study investigated the effect of language immersion in an Englishspeaking environment on the production of intonational features in L2 English sentences. It was hypothesized that the Korean group who had been immersed in the English language as children would have intonation patterns more similar to native English speakers than a nonimmersed group of Korean speakers, who shared otherwise similar experience and proficiency with English. Sixty subjects in three groups - 20 Korean adults in the immersed group, 20 Korean adults in the nonimmersed group, and 20 native English speakers (as a control group) - took part in the experiment. The immersed group was more native-like by having a steeper F0 declination tilt (a wider F0 range and a fast speech rate). However, the immersed group, like non-immersed group, exhibited difficulty in resetting F0 between adjacent phrases at boundary. These results suggest that the acquisition of second language (L2) intonation is affected by early immersion in an L2 environment, but the degree of intonational acquisition was shown to vary by subareas, in which some F0-related cues proved to be hard to acquire.

Effects of L1 language background and L2 experience on adult L2 acquisition of five suprasegmentals

Seokhan Kang 한국음운론학회 2014 음성·음운·형태론 연구 Vol.20 No.3

This study investigated how various adult groups with different mother tongues and diverse levels of experience with an L2 acquire the suprasegmental phonetic cues of the L2 speech. Two hundred subjects in ten groups took part in the experiment. The results show that the L1 language background and L2 experience exhibit dissimilar influences on the acquisition of the L2 suprasegmentals. More specifically, the L1 background impacts the fluency of L2 speech more strongly in the early stage, while L2 experience mitigates the L1 effect dramatically in the later stage for the adult L2 learners. The acquisition of L2 suprasegmental cues, however, triggers an uneven influence on native speakers’ judgments of the fluency of L2 speech; speech rate has the most influence on judging L2 fluency, while F0 range has the least. Among three L1 groups, comparatively inexperienced Japanese learners of Korean control these cues well compared to English and Mandarin learners of Korean as an L2.

The L2 Acquisition of English Focus for Koreans by the Effect of Immersion

Seokhan Kang 한국중원언어학회 2015 언어학연구 Vol.0 No.35

It has been suggested that the effect of L2 experience age in an immersion environment has some influence on the L2 acquisition of semantic focus. This study investigates the phonetic/phonology features of L2 production such as pitch accent patterns, F0 ratio, and durational ratio of focused words. It was hypothesized that the Korean speakers who had been immersed early in the English-speaking environment would show prosodic features of English focus more similar to those of native English speakers than the Korean speakers who had been immersed late. Thirty subjects in three groups-Korean adults with the early immersion, Korean adults with the late immersion, and native English speakers as a control group-took part in the experiment. The result showed that the early immersion group produced more native-like focus features such as a more proportion of pitch-peak patterns and a longer duration. In realizing semantic focus, however, they failed to raise the F0s in the focused words in which native English speakers clearly showed the outstanding higher F0s. These results suggest that the early immersion on L2 focus acquisition is proved to be in the mid of language transfer.

Discourse Analysis on Language Education in a Korean Language School : What Knowledge They Pursue?

Seokhan Kang 한국언어연구학회 1999 언어학연구 Vol.4 No.-

Journal of Linguistic Studies 4, 1-15. This paper primarily aims to examine what kind of knowledge a teacher and students in a Korean language class pursue. To analyze the collected data, it applies some sociolinguistic concepts, while psycholinguistic and etymological philosophy are adopted to discuss the classified discourse by following sociolinguistic methods. This paper reveals that the discourse produced in this particular classroom highly pursues the objective knowledge : the truth of what is asserted by some ethical sentences is independent of the person who uses this sentence, the time at which he uses it, and the place where he uses it. This objectivity in language education can be criticized by Vygosky's viewpoint that students do not simply acquire linguistic vocabulary, but positively take part in shaping knowledge by connecting it in the classroom with their social experience.