당근의 재배 방법에 따른 in vitro HT-29 인체암세포에서의 항암효과와 ex vivo에서 cytokines 및 NK 세포 활성 연구

이연준,반연예,신신일,장정주,박건영 한국식품영양과학회 2022 한국식품영양과학회 학술대회발표집 Vol.2022 No.10

왜 영화인가? 영어교육강화 방안에 대한 재고: 굿 윌 헌팅을 중심으로

이연준,이자원 영상영어교육학회 2012 영상영어교육 (STEM journal) Vol.13 No.3

This paper deals with a suggestion for non-native English teachers to teach communicative language classes with the help of movie-materials. It also describes the theoretical foundations necessary to use movies in the foreign language classroom. According to Sinclair (1991), language is defined as a combination of creativity plus prefabricated chunks. Therefore, learning prefabricated chunks is theoretically justified in order to enhance language development. Lamb (1998) also argues that there are many scholars of language learning who ignore the human’s cognitive ability to memorize, implying that memorizing prefabricated chunks is an effective way to learn an L2. Speaking of the process of language acquisition, Ellis (2003) reports that syntactic systematicity is the result of strengthening associations between language function and language form. The associations are immediately processed through prefabricated chunks, he argues. In this respect, memorization of prefabricated chunks and language development are closely related. Considering teaching such chunks, there is no reason that non-native teachers should be ignored in the L2 classroom. This paper makes suggestions about how to manage L2 classrooms using movie-materials. The movie Good Will Hunting has been used because it has many touching and impressive dialogues. The roles of teachers, students and the movie-materials are described in detail. This paper shows conclusively that non-native teachers are perfectly able to improve students’ communicative abilities.

The Expression of PTTG1 as a Biomarker and Impact on Invasion and Growth of Oral Squamous Cell Carcinoma

이연준,박경원,김시현,박수연,최종호 대한구강악안면병리학회 2023 대한구강악안면병리학회지 Vol.47 No.5

Oral squamous cell carcinoma (OSCC) is the most common type of oral cancer, and it has been steadily increasing in worldwide. Pituitary tumor transforming gene 1 (PTTG1) has been known as oncogene in a verity of cancers. Nevertheless, the expression and role of PTTG1 in OSCC progression remains largely unexplored. In this study, clinical datasets were analyzed to assess the genetic impact of PTTG1 on OSCC progression and to identify its functional roles in OSCC cell lines. We analyzed the expression of PTTG1 in head and neck squamous cell carcinoma (HNSC) and OSCC using databases form the Cancer Genome Atlas (TCGA) and the Gene Expression Omnibus (GEO). To investigate the effect of PTTG1 on proliferation and migration abilities in OSCC cell lines, following the knockdown of PTTG1 in HSC-2 and SCC-9 cell lines, we analyzed the proliferation and metastatic abilities of OSCC cells using EdU and Boyden chamber assays. Our database analysis revealed that PTTG1 was significantly overexpressed in tumor tissues compared to normal tissues. Moreover, its expression correlated with clinical parameters of OSCC. In vitro experiments demonstrated that depletion of PTTG1 suppressed the ability of cell proliferation and migration in both HSC-2 and SCC-9 cell lines. In conclusion, our study suggests that PTTG1 may act as an oncogene in OSCC. These findings provide new insights into the mechanisms and clinical implications of PTTG1 expression in OSCC patients.

고전소설 빨간머리 앤을 단순화 시킨 교재와 다단어 단위 연구: 앱을 이용하여

이연준 영상영어교육학회 2018 영상영어교육 (STEM journal) Vol.19 No.1

The purpose of this paper is to emphasize that graded readers, such as Anne of Green Gables, are worth being chosen as college-level study material. Even though they are simplified versions linguistically, graded books are useful for learning multi-word units (MWUs) and in learning cultural values. To show this, a 3 stage experiment was conducted with 3 non-English major college students and the text app-Anne of Green Gables. In the first stage, the participants had a form recall test to enhance their awareness of MWUs. In the second stage, they had a written test about the contents of the book and had to answer questions with MWUs. In the third stage, the participants had another written test about American culture through MWUs. After the experiment, all the participants were interviewed with questions about the tests. They responded that they could deal with the first test without difficulty though two of them failed to get good grades. However, they confessed that they could not handle the second and third tests without their teacher’s help. The results indicate that graded readers are just right for learning MWUs and are cognitively acceptable as sources of content for discussing non-language topics such as culture. .

새로운 지하철 계량을 가진 평면상의 이차곡선의 특징에 대한 연구

이연준,조중현,고일석,김병학 한국수학교육학회 2014 수학교육 학술지 Vol.2014 No.2

영화영어와 Exemplar-Based Learning : 영화 푸시를 중심으로

이연준 영상영어교육학회 2020 영상영어교육 (STEM journal) Vol.21 No.3

The purpose of this paper is three-fold: 1) to suggest a way to effectively teach movie expressions in the EFL classroom; 2) to explain why movie expressions should be taught; and 3) to show how to select the expressions. Two concepts were imported: exemplar-based sequences and the idea of a speech community. In usage-based linguistics, actual expressions (exemplars) are a starting point for language acquisition. Such expressions should be used in a speech community. In this paper, a movie was regarded as a type of speech community. The American superhero film, Push (McGuigan, 2009), was selected. This paper shows how EFL teachers can conceive of Push as a speech community. All members of the Push community had psychic abilities. Expressions were grouped according to these psychic aspects. This process is believed to create a community of psychics. After the grouping activities were done, each expression serves as a reminder of the psychic world. This paper also shows that language development can take place when EFL students learn grouped expressions. According to exemplar-based sequences, language development can move from actual expressions or exemplars to the abstract schema. We believe that EFL teachers can teach movie expressions systematically and coherently with the help of exemplar-based learning and the idea of a speech community.

원주시 대기 중 자연발생 휘발성유기화합물의 주야간 농도 특성

이연준,김태윤,신윤하,김성헌 한국대기환경학회 2022 한국대기환경학회 학술대회논문집 Vol.2022 No.10

Supergraph Search 알고리즘 IDAR의 병렬화에 대한 실험 분석

이연준,민승환,박근수 한국정보과학회 2023 정보과학회 컴퓨팅의 실제 논문지 Vol.29 No.6

그래프 분석에서 핵심적인 문제 중 하나는 Supergraph search 문제이다. Supergraph search 문제는 다수의 데이터 그래프들과 한 개의 쿼리 그래프에 대하여 쿼리 그래프에 임베딩(embedding)이 있는 데이터 그래프들을 찾는 문제이다. 이 문제를 해결하는 최신 알고리즘인 IDAR에서는 방향성 비사이클 그래프(IDAG)와 그래프 사이의 동적 계획법(IDAG-Graph DP) 그리고 active-first search를 통해 문제를 효율적으로 해결하였다. 본 논문에서는 IDAR에서 제안한 Supergraph search 중 query processing 과정을 병렬화를 통해 성능을 개선하였다. 또한, 병렬화를 위한 새로운 자료 구조를 도입하였고, 실제 데이터 그래프를 통해 실험을 진행하여서 성능을 측정하고 결과를 분석하였다.

보육교사의 정서표현규칙과 정서노동 수행전략에 관한 연구

이연준,서영숙 한국보육지원학회 2015 한국보육지원학회지 Vol.11 No.5

이 논문은 보육교사의 직무에서 정서표현규칙의 하위요인과 정서노동 수행전략 간의 관계 및 영향력을 알아보는데 목적이 있다. 이를 위해 서울 지역 어린이집에 근무하는 보육교사 268명을 대상으로 설문조사를 실시하였고, 자료 분석을 위해 상관관계 분석과 회귀분석을 실시하였다. 연구 결과 첫째, 정서표현규칙 지각은 정서노동의 내면행동, 표면행동과 유의한 정적 상관이 있는 것으로 나타났으며, 내면행동은 정서표현규칙의 교육, 몰입, 공정성, 명확성과 유의한 정적 상관이 있는 것으로 나타났다. 둘째, 정서표현규칙 지각은 표면행동, 내면행동에 정적인 영향을 미치고, 정서표현규칙에 대한 몰입이 내면행동에 유의한 정적 영향을 미치는 것으로 나타났다. 이러한 결과를 바탕으로 보육교사의 정서노동을 지원하고 교사의 정서관리 능력향상을 위한 교육방향을 제안하였다.

Changes in the toxicity of procymidone and its metabolite during the photohydrolysis process and the effect of the presence of microplastics

이연준,양지원,Byeongwook Choi,박성직,이창구,조은혜 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.3

Procymidone (PCM), an agricultural fungicide, is attracting attention because it has been detected in all ecosystems, including aquatic environments. This study explored changes in the behavior and toxicity of PCM in water under the influence of photolysis and microplastics (MPs) coexistence. Hydrolysis of PCM was evaluated and UV-A and UV-C lamps were used as light sources for the photodegradation experiments. The Microtox® assay was used to evaluate changes in toxicity during the photodegradation and after sorption on MPs of low-density polyethylene (LDPE) and polyvinyl chloride (PVC) films. The appearance of 3,5-dichloroaniline (DCA), a major metabolite of PCM that is more toxic than its parent compound in water, was confirmed. Both PCM and DCA showed sufficient molar extinction coefficients to be photolyzed under UV-C irradiation (εPCM=10,300 M−1 cm−1 and εDCA=2,400 M−1 cm−1); however, the presence of natural organic matter negatively affected their photodegradation. PVC showed a better sorption potential for PCM and DCA than for LDPE. The higher sorption by PVC significantly reduced the toxic effect of DCA from an average value of 79% to 60% and increased the EC50 value from 30.4% to 47.6%. These results offer insights into controlling toxic micropollutants, including fungicides, in aquatic environments and water treatment processes.