시나리오 기반 설계기법을 이용한 휴대전화 상호작용 과업 패턴 개발에 관한 연구

정민주,최효선,이채우,윤명환 대한인간공학회 2008 대한인간공학회 학술대회논문집 Vol.- No.-

국내 와이브로 방식이 국제 표준으로 제정되면서 와이브로 휴대전화의 사용자가 증가추세를 보이고 있다. 와이브로가 적용되는 휴대전화의 경우 기존 휴대전화에 비하여 성능이 매우 우수하므로 다양한 형태의 서비스를 탑재하는 것이 가능하다. 본 연구 사례에서는 와이브로 휴대전화에 음성인식이 가능한 문자 메시지 서비스를 적용하기 위하여 사용자 조사를 진행하였다. 와이브로 및 음성인식의 경우 주요 사용자 범위가 한정되어 있으므로 본 연구에서는 페르소나를 구축하여 타겟 사용자를 명확히하고 그에 초점을 맞춘 음성인식 인터페이스를 기획하고자 하였다. 이를 위해 다양한 연령대의 사용자를 대상으로 한 리서치를 통하여 타겟 페르소나를 도출하였다. 본 사례 연구를 통하여 SMS 에 음성인식이 어떠한 형태로 적용될 수 있는지에 대한 페르소나를 이용한 인터페이스 기획의 실제적 사례를 제시하고, 향후 타 인터페이스의 기획에도 적용할 수 있는 지침으로 제시하고자 한다.

우리나라 어선감척사업의 연안자망어업에 대한 어자원회복 및 경제적 효과 추정

정민주,남종오 한국해양과학기술원 2017 Ocean and Polar Research Vol.39 No.3

The purpose of this study is to estimate the extent of fisheries resource rebuilding and other economic effects on coastal gill-net fishery as a result of the Korean vessel buy-back program using withwithout analysis based on methods estimating sustainable yields for all species caught by coastal gill-net fishery. Based on the results of with-without analysis, maximum sustainable yields (MSY) of all species caught by coastal gill-net fishery have been increased by the Korean vessel buy-back program. In addition, profits per vessel of maximum economic yield (MEY) of the species have been improved by the program. Further, yields and a producer surplus per vessel under an equilibrium of open access (OA) have increased because of the program. In detail, first of all, at the MSY level, the vessel buy-back program has led to about 21% fisheries resource recovery, and at the MEY level, it has led to about a 19% resource recovery. Secondly, at the MEY level and the OA level, the producer surplus per vessel has been increased by about 24% and 22% respectively by the vessel buy-back program.

납 투여된 마우스의 신장에서 활성탄 처리 효과에 대한 전자현미경적 연구

정민주,윤중식,정경아,김영호,노영복,Chung, Min-Ju,Yoon, Jung-Sik,Chung, Kyung-A,Kim, Young-Ho,Roh, Young-Bok 한국현미경학회 1999 Applied microscopy Vol.29 No.2

For investigation of the activated carbon on the mouse kidney treated with Pb, the activated carbon (40 mg/kg) and Pb (30 mg/kg) were treated orally for three and six weeks, respectivelly, and observed by the electron microscope. On the glomerulus of the group with only Pb, the basal membrane thicked, projected, and the foot processes fused. On the proximal convoluted tubules, the number of microvilli were decreased and the number of vacuoles and lysosome increased on the cytoplasm. The mitochondria and endoplasmic reticulum were extended and ribosomes dropped from the ER. On the giomerulus of the group with Pb-activated carbon, the basal membrane and the foot processes were merely changed. On the proximal convoluted tubules, the shapes and number of microvilli were not changed and the number of vacuoles, microbodies, and lysosomes decreased. The shapes of mitochondria and endoplasmic reticulum observed almost similar with control group. Th at is, elongated mitochondria and attached ribosomes to endoplasmic reticulum. As result, the activated carbon has positive effect on reducing toxicity of lead in the mouse kidney in the view of electron microscope.

활성탄이 납 중독된 흰쥐의 간장에 미치는 조직학적 연구

정민주,노영복,Chung, Min-Ju,Roh, Young-Bok 한국현미경학회 2002 Applied microscopy Vol.32 No.2

For investigation of the activated carbon in the rat liver toxicated by lead. Aniamls used $7{\sim}8$ weeks to Sparague-Dewley rat (150 g). The lead acetate (500 ppm) were injected and activated carbon (40 mg/kg) were treated orally for four and eight weeks, respectivelly, and observed by the electron microscope. The group with only lead for 4 weeks, The mitochondria and rough endoplasmic reticulum (rER) were extended and ribosomes dropped from the rER. The group with lead-activated carbon for 4 weeks, The number of lysosomes increased. The shapes of nucleus and rough endoplasmic reticulum observed almost similar with nomally. The group with only lead for 8 weeks, The mitochondria and rough endoplasmic reticulum (rER) were more extended. The group with lead-activated carbon for 8 weeks, the nucleus and rough endoplasmic reticulum was observed nomally.

급성 납 중독된 생쥐의 신장에서 활성탄의 보호효과

정민주,노영복,Cheong, Min-Ju,Roh, Young-Bok 한국현미경학회 2006 Applied microscopy Vol.36 No.2

A protective effect of activated charcoal against the acute lead poisoning of kidney was studied in mice. Mice approximately 30 gm in weight were grouped into the control, lead acetate-treated. and the activated charcoal-treated after lead acetate groups. Lead acetate (60mg/kg) and activated charcoal (40mg/kg) were delivered orally. Serum BUN and creatine were measured and ultrastructural alteration of renal tissues were examined by electron microscopy. Activated charcoal were decreased the increase of serum BUN and Creatinine level induced by lead. Lead acetate-treated renal tissues were characterized by the loss of microvilli in the renal tubule tells, irregular nucleus, enlarged and reduced number of mitochodria, enlarged rough endoplasmic reticulum, loss of ribosomes. Cells treated with activated charcoal were similar to those of the control group. In conclusion, activated charcoal may protect the lead-induced toxicity on kidney.

인간과 하천 3 - 하천과 우리 설화 2: 대동강(大同江)

정민주,Jeong, Min-Ju 한국하천협회 2013 하천과 문화 Vol.9 No.3

납으로 유발된 생쥐 간독성에 대한 활성탄의 보호효과

정민주,노영복,Cheong, Min-Ju,Roh, Young-Bok 한국현미경학회 2006 Applied microscopy Vol.36 No.4

본 연구는 급성 납 독성에 대한 활성탄의 방어효과를 알아보기 위하여 시도되었다. 30g내외의 생쥐를 대상으로 대조군, 납(60mg/kg) 투여군, 납 투여 후 활성탄(40mg/kg) 투여군으로 구분하여 구강투여 한 후 간장, 신장손상 억제 효과를 알아보기 위하여 생화학적 및 조직학적 실험을 실시하였다. 혈액중 aspartate amiotransferase(AST). alanine amino-transferase(ALT)그리고 glucose(Glu)의 수치는 활성탄 투여군이 납 투여군보다 감소되었다. 전자현미경적 관찰 결과, 간장에서 납 투여군은 간세포의 핵이 함입되어 불규칙했으며 미토콘드리아와 조면소포체의 수조가 팽대되고, 리보솜의 탈락이 관찰되었다. 활성탄 투여군은 핵이 대조군과 같은 형태가 관찰되었고, 전자밀도가 높은 미토콘드리아가 분포되어 있었으며, 리보솜이 부착된 상태로 층판구조를 형성하는 조면소포체가 관찰되었다. 이상과 같은 결과, 활성탄이 납 중독된 생쥐에서 납을 흡착시킴으로서 손상된 간장에 보호 효과가 있는 것으로 사료된다.

발표 불안 행동 지표에 관한 탐색적 연구 - 중학생의 온라인 발표 수행을 중심으로 -

정민주,박성석,최영인,백정이,민병곤,장성민,김예원,김동섭,음소현 한국화법학회 2024 화법연구 Vol.- No.64

This study aimed to explore an observer-rated behavioral indicator for measuring speakers’ speech anxiety in online speech and to statistically test the explanatory power of the behavioral indicator. We assessed speech anxiety behaviors in middle school students and statistically correlated them with speakers’ self-reported speech anxiety and speech performance scores provided by external raters. This analysis yielded several significant findings. First, after controlling for speech duration, a partial correlation was found between observed speech anxiety behaviors and self-reported anxiety, particularly in “too soft,” “speech blocks,” and “lack of appropriate gestures.” Second, correlations between observed speech anxiety behaviors and speech performance scores were examined, and speech performance time was controlled. Three behaviors showed significant and marginal inverse correlations: “too soft,” “speech blocks,” and “vocalized pauses.” Third, regression analysis was conducted to assess the explanatory power of observed speech anxiety on speech performance quality. Results showed that the three observed speech anxiety behaviors were significantly more explanatory than self-reported anxiety. Finally, the relationships between self-reported speech anxiety, observed speech anxiety, and speech performance scores were explored. The mediation model from self-reported anxiety to observed anxiety and speech performance scores constituted the full mediation model.

소집단 의사소통의 상호교섭성 구현을 위한 국어 교육적 방안

정민주 한국어교육학회 2007 한국어교육학회 학술발표논문집 Vol.2007 No.-

한 대학병원의 호흡기내과 의무기록 검토를 통해 파악한 직업성 호흡기질환 분포

정민주,임종한,박신구,김환철,문진영,김지훈,양성철,김지호,김민선,원유나 대한직업환경의학회 2022 대한직업환경의학회 학술대회 논문집 Vol.2022 No.11