A Critical Review of Research on LTH and LIH

Lee Seongwon 영미어문학회 2004 영미어문학연구 Vol.20 No.1

Lee, Seongwon. 2004. A critical review of research on LIH and LTH. The British & American language Literature. 20-1. 53-65. As English education for young students has received more attention compared with Korean education, educators are getting concerned about the unbalanced education between the subjects of English and Korean. Many experts in the field of language education believe that the subjects' first language plays a more important role in acquiring a second language than many expect. It is about time that the importance of first language in learning a second language be investigated. The study thus attempted to synthesize and evaluate studies that dealt with the relationship between L1 and L2 especially in the area of reading. The question whether second language reading is a language problem or a reading problem has captured attention of second/foreign language reading researchers. Researchers tried to answer this question based on two contradicting hypotheses: the linguistic threshold hypothesis (LTH) and the linguistic interdependency hypothesis (LlH). LTH states that the readers have to possess a certain amount of grammatical/linguistic knowledge in order to engage their first language reading skills. On the other hand, LIH states that reading performance in a second language is largely shared with reading ability in a first language. Studies supporting the LTH, LIH, and both LTH and LIH are discussed and evaluated.

Incorporating Cyclical Model of Self-Regulation into Korean High School EFL Learners

( Lee¸ Eonjeong ),( Lee¸ Seongwon ) 한국중등영어교육학회 2021 중등영어교육 Vol.14 No.4

The study applied Zimmerman’s cyclical model of self-regulation to an EFL high school classroom and explored how it affects learner motivation, strategy use, and reading comprehension. The cycle of self-regulation process was introduced to seventeen students who participated in the study. Five learning strategies were introduced during a 100 minute English lesson each week for five weeks. Participants took motivation questionnaire, strategy use check list, and reading comprehension tests before and after those lessons. Data analyzed using paired sample t-test show that there was a significant increase in terms of motivation level and strategy use. More specifically, for motivation level, 13 out of 18 motivation aspects showed improvement and for learning strategy use, there was a statistically meaningful increase in 17 out of 25 items. However, there was not any meaningful increase in reading comprehension tests and this result can be explained with the lack of time or the cognitive load caused by strategy use. All in all, the study suggests teachers help learners improve motivation, strategy use, and self-regulatory ability by incorporating the model into their EFL classroom.

Youtube API를 활용한 데이터 분석, 저장 웹 서비스

이성원(Lee Seongwon),이원근(Lee Wongeun),이지혁(Lee Jihyeok),박진산(Park Jinsan),천용태(Cheon Yongtae) 한국정보기술학회 2023 Proceedings of KIIT Conference Vol.2023 No.6

사회지능 평가 정량화를 위한 사회지능과 표정인지와 표정표현 간의 상관성 분석

이성원(Seongwon Lee),황민철(Mincheol Whang),이현우(Hyunwoo Lee),조영호(Youngho Jo),이정년(Jungnyun Lee),김영주(Young-Joo Kim),김혜진(Hyejin Kim) 한국HCI학회 2018 한국HCI학회 학술대회 Vol.2018 No.1

본 연구는 사회지능의 정량적 측정을 위해 표정인지와 표현의 상관성을 확인하고자 하였다. 10 대에서 40 대 사이 726 명을 대상으로 ‘사회지능-표정인지-표정표현’ 평가가 수행되었으며, 무표정, 행복, 슬픔, 분노, 놀람, 혐오, 공포, 경멸에 대한 표정평가를 실시하였다. 표정인지 평가는 제시되는 표정과 일치하는 감성 어휘를 선택하는 객관 설문결과가 수집되었으며, 표정표현 평가는 웹캠을 통해 취득하는 얼굴 근육의 움직임을 각 표정 별 근육움직임의 특징과 비교하여 정확도를 평가하였다. 평가 결과, 표정 평가에서 계산되는 7 가지 표정 스케일에 맞추어 사회지능 점수결과를 7 그룹으로 나누고 각 그룹의 평균 점수로 상관분석을 실시하였다. 그 결과 사회지능이 높은 그룹일수록 표정인지 점수가 높아지며 통계적으로 유의한 결과를 확인하였다(p < .01). 표정표현은 모든 표정 결과를 합산한 점수로는 유의한 결과가 나타나지 않았으나, 행복한 표정의 표현에서 사회지능과의 유의성이 확인되었다(p < .05). 반비례적 패턴을 가진 분노와 공포 표현을 제외한 행복, 슬픔, 놀람, 혐오, 경멸표정표현만을 평가 항목으로 할 경우, 사회지능결과와 유의한 결과가 나타났다(p < .05). 따라서 추후 표정표현 평가에서 검사 항목을 강화하여 표정인지 평가와 함께 정량적인 사회지능의 측정이 가능해 질 것으로 기대된다.

β-Mannanase (CTCZYME<SUP>®</SUP>) 첨가가 어린 송아지의 성장에 미치는 영향

이세영(Se-Young Lee),이상문(Sang-Moon Lee),김종형(Jong-Hyeong Kim),기광석(Kwang-Seok Ki),김현섭(Hyeon-Shup Kim),감동근(Dong-Keun Kam),이재환(Jae-Hwan Lee),이정진(Jung-Jin Lee),배귀석(Gui-Seck Bae),서성원(Seongwon Seo) 충남대학교 농업과학연구소 2010 농업과학연구 Vol.37 No.2

The objective of this study was to evaluate effects of supplementation of β-mannanase (CTCZYME<SUP>ⓡ</SUP>, CTCBIO, Inc.) on feed intake, growth performance and fecal health of calves fed two levels (3% vs. 8%) of palm kernel meal (PKM). A total of nine Holstein calves were divided into three groups, and fed a conventional starter containing 3% PKM (CON), CON+ 0.1% CTCZYME <SUP>ⓡ</SUP> (TRT1), or a starter containing 8% PKM+ 0.1% CTCZYME<SUP>ⓡ</SUP> (TRT2). No clinical symptom of calves was observed through the trial. We did not find significant differences among the treatments on mean feed intake, growth performance, or fecal health during the four-week experimental period. Feed efficiency tended to be improved by adding CTCZYME<SUP>ⓡ</SUP> (0.46, 0.87 and 0.52 for CON, TRT1 and TRT2, respectively). Compared with CON (921 g/d and 786 g/d), TRT2 had lower feed intake (727 g/d) and average daily gain (ADG, 631 g/d) before weaning. However, feed intake (2300 g/d) and ADG (1012 g/d) were similar or even higher in TRT2 than CON (2269 g/d and 560 g/d) after weaning. This was probably due to the effect of a large amount of mannan-oligosaccharide released from PKM by β-mannanase. Salmonella was not detected any fecal samples. No significant difference was observed in the number of fecal E. coli or fecal properties including color, smell, and watery indexes among the treatments. We conclude that a calf starter containing 8% PKM with 0.1% CTCZYME<SUP>ⓡ</SUP> is comparable with a conventional starter in feed intake and growth performance of calf, which is beneficial in terms of reduction in feed cost.

Corrigendum: Open carpal release using local anesthesia without a tourniquet: Does bleeding tendency affect the outcome?

Lee, Seongwon,Oh, Sangho,Son, Daegu Korean Society of Plastic and Reconstructive Surge 2021 Archives of Plastic Surgery Vol.48 No.1

Tangible Tele-Meeting in Tangible Space Initiative

Lee, Joong-Jae,Lee, Hyun-Jin,Jeong, Mun-Ho,Jeong, SeongWon,You, Bum-Jae The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.2

Tangible Space Initiative (TSI) is a new framework that can provide a more natural and intuitive Human Computer Interface for users. This is composed of three cooperative components: a Tangible Interface, Responsive Cyber Space, and Tangible Agent. In this paper we present a Tangible Tele-Meeting system in TSI, which allows people to communicate with each other without any spatial limitation. In addition, we introduce a method for registering a Tangible Avatar with a Tangible Agent. The suggested method is based on relative pose estimation between the user and the Tangible Agent. Experimental results show that the user can experience an interaction environment that is more natural and intelligent than that provided by conventional tele-meeting systems.

Risk Factors of Donor Site Seroma Formation and Laboratory Analysis of Seromas after Breast Reconstruction with a Latissimus Dorsi Flap

Seongwon Lee,Taehee Jo,손대구 대한미용성형외과학회 2018 Archives of Aesthetic Plastic Surgery Vol.24 No.3

Background Donor site seroma is the most frequent and troublesome complication of latissimus dorsi (LP) flaps. This study aimed to identify the risk factors of seroma formation after an LD flap and to evaluate the biochemical composition of seromas. Methods The medical records of 84 patients who underwent an LD flap from September 2007 to May 2017 were reviewed. Age; body mass index (BMI); the type of breast surgery, reconstruction, and nodal dissection; the usage of fibrin glue; smoking; chemotherapy; and history of diabetes mellitus or hypertension were evaluated. In 11 of the 84 patients, the levels of electrolytes, glucose, proteins, lipids, and inflammatory markers present in seromas were investigated. Results The overall incidence of seroma was 66.7%. Advanced age (≥45 years) and overweight (BMI ≥23 kg/m2) were significant risk factors for seroma. Patients who underwent an extended LD flap had a higher incidence of seroma than those who underwent a standard LD flap, while those who underwent breast-conserving surgery had a lower incidence of seroma than those who underwent other breast procedures. Lactate dehydrogenase (LDH) levels in seromas on postoperative day 2 demonstrated a positive linear correlation with the duration of drainage, but this relationship did not reach statistical significance. Conclusions Advanced age, overweight, wider excision or mastectomy, and use of an extended LD flap were found to be risk factors for seroma formation after breast reconstruction with an LD flap. It may be possible to infer whether a seroma will be long-lasting by measuring LDH levels in the seroma.

Modeling the role of TGF-β in regulation of the Th17 phenotype in the LPS-driven immune system.

Lee, Seongwon,Hwang, Hyung Ju,Kim, Yangjin Springer 2014 BULLETIN OF MATHEMATICAL BIOLOGY Vol.76 No.5

<P>Airway exposure levels of lipopolysaccharide (LPS) are known to determine type I versus type II helper T cell induced experimental asthma. While low doses of LPS derive Th2 inflammatory responses, high (and/or intermediate) LPS levels induce Th1- or Th17-dominant responses. The present paper develops a mathematical model of the phenotypic switches among three Th phenotypes (Th1, Th2, and Th17) in response to various LPS levels. In the present work, we simplify the complex network of the interactions between cells and regulatory molecules. The model describes the nonlinear cross-talks between the IL-4/Th2 activities and a key regulatory molecule, transforming growth factor beta (TGF-beta), in response to high, intermediate, and low levels of LPS. The model characterizes development of three phenotypes (Th1, Th2, and Th17) and predicts the onset of a new phenotype, Th17, under the tight control of TGF-beta. Analysis of the model illustrates the mono-, bi-, and oneway-switches in the key regulatory parameter sets in the absence or presence of time delays. The model also predicts coexistence of those phenotypes and Th1- or Th2-dominant immune responses in a spatial domain under various biochemical and bio-mechanical conditions in the microenvironment.</P>

Evaluation of the equation for predicting dry matter intake of lactating dairy cows in the Korean feeding standards for dairy cattle

Lee, Mingyung,Lee, Junsung,Jeon, Seoyoung,Park, Seong-Min,Ki, Kwang-Seok,Seo, Seongwon Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.10

Objective: This study aimed to validate and evaluate the dry matter (DM) intake prediction model of the Korean feeding standards for dairy cattle (KFSD). Methods: The KFSD DM intake (DMI) model was developed using a database containing the data from the Journal of Dairy Science from 2006 to 2011 (1,065 observations 287 studies). The development (458 observations from 103 studies) and evaluation databases (168 observations from 74 studies) were constructed from the database. The body weight (kg; BW), metabolic BW (BW^0.75, MBW), 4% fat-corrected milk (FCM), forage as a percentage of dietary DM, and the dietary content of nutrients (% DM) were chosen as possible explanatory variables. A random coefficient model with the study as a random variable and a linear model without the random effect was used to select model variables and estimate parameters, respectively, during the model development. The best-fit equation was compared to published equations, and sensitivity analysis of the prediction equation was conducted. The KFSD model was also evaluated using in vivo feeding trial data. Results: The KFSD DMI equation is 4.103 (±2.994)+0.112 (±0.022)×MBW+0.284 (±0.020)×FCM-0.119 (±0.028)×neutral detergent fiber (NDF), explaining 47% of the variation in the evaluation dataset with no mean nor slope bias (p>0.05). The root mean square prediction error was 2.70 kg/d, best among the tested equations. The sensitivity analysis showed that the model is the most sensitive to FCM, followed by MBW and NDF. With the in vivo data, the KFSD equation showed slightly higher precision (R² = 0.39) than the NRC equation (R² = 0.37), with a mean bias of 1.19 kg and no slope bias (p>0.05). Conclusion: The KFSD DMI model is suitable for predicting the DMI of lactating dairy cows in practical situations in Korea.