Cemento-osseous dysplasia: clinical presentation and symptoms

Inhye Nam,Jihye Ryu,Sang-Hun Shin,Yong-Deok Kim,Jae-Yeol Lee 대한구강악안면외과학회 2022 대한구강악안면외과학회지 Vol.48 No.2

Objectives: The purpose of this study was to evaluate risk factors and symptoms in cemento-osseous dysplasia (COD) patients. Materials and Methods: In this study, 62 patients who were diagnosed histologically with COD were investigated from 2010 to 2020 at the author’s institution. We compared clinical and radiological characteristics of symptomatic and asymptomatic patients. The factors were sex, age, lesion size, site, radiologic stage of lesion, apical involvement, sign of infection, and history of tooth extraction. Statistical analysis was performed using Fisher’s exact test and the chi-square test. Results: COD was more prevalent in female patients. With the exception of three cases, all were focal COD. The majority of patients presented with symptoms when the lesion was smaller than 1.5 cm in size. Symptoms were observed when the apex of the tooth was included in the lesion or there was a local infection around the lesion. The history of tooth extraction and previous endodontic treatment were evaluated, and history was not a signifi-cant predictor for the onset of symptoms. Conclusion: In this study, risk factors associated with symptomatic patients were size of lesion, apical involvement, and local infection.

학교평균 학생 학업성취도가 교사의 수업준비시간 및 수업개선노력에 미치는 영향 분석

남인혜(Nam, Inhye),이안나(Lee, Anna) 한국교육재정경제학회 2020 敎育財政 經濟硏究 Vol.29 No.4

This study aims to identify whether moral hazard occurs in teachers depending on student achievement levels. In other words, this study tries to figure out whether teachers in low-achieving schools tend to put less efforts in teaching because their students, as the principal in the principal-agent model, have more imperfect information about their lessons and are thus less observable of their teachers’ teaching behaviors. Using the collected data from the Actual Status and the Quality of School Education Data, this study analyzed the effects of school achievement levels on teacher efforts in teaching (as measured by time spent in preparing for classes, time spent in taking teacher training courses on teaching and time spent in class improvement activities). To control for reverse causation, this study used the Two Stage Least Squares (2SLS) model with instrumental variables (IV). Findings were as follows: first, teachers in lower-achieving schools were significantly putting less time in preparing for classes, taking teacher training courses on teaching and participating in class improvement activities. Second, the effects were significantly moderated by the schools’ degree of reflecting the student survey results, which implies that students play valid roles as the principal in the principal-agent model. Third, time spent by teachers on student management and administrative tasks significantly differed between teachers in schools with below-average achieving schools and upper-average ones, with the former spending more time. 본 연구는 학교평균 학생의 학업성취수준이 교사의 수업준비시간 및 수업개선노력에 미치는 영향을 분석하였다. 즉, 성취수준이 높은 학교일수록 교사가 수업 노력을 더 기울이고, 성취수준이 낮은 학교일수록 덜 기울이는 것은 아닌지 확인하고자 하였다. 이를 위해 학교교육 실태 및 수준 분석 4주기 자료의 초, 중, 고등학교 데이터를 활용해 도구변수(Instrumental Variable)를 사용한 분석을 수행하였다. 분석 결과 첫째, 학교평균 학업성취도가 낮은 학교일수록 교사의 수업준비시간, 수업관련연수시간, 수업개선활동횟수가 모두 유의하게 감소하였다. 이러한 효과는 특히 초등학교와 중학교에서 일관되었다. 둘째, 학교의 학생의견 반영정도는 앞선 효과를 유의하게 완화시켜주는 조절효과를 갖는 것으로 나타났다. 주인(principal)으로서 학생의 감시(observability) 정도가 높을수록 교사의 책무 이행수준이 학생의 성취수준에 의해 덜 좌우되는 것으로 볼 수 있다. 셋째, 평균성취도 하위 50% 학교 교사는 상위 50% 학교 교사보다 생활지도와 행정업무 할애시간 및 연수시간이 유의하게 더 많았다. 즉, 평균성취도 상위 50% 학교는 상대적으로 교사가 수업에 집중하기 용이한 환경이며, 한편으로 저성취학교 교사는 수업준비시간이 줄어들더라도 학교를 구성하는 학생의 특성에 따라 더 요구가 높은 생활지도에 많은 노력을 할애하고 있음을 시사한다. 이상의 결과를 토대로 저성취학교 교사의 수업 노력을 강화하기 위한 학교단위 지원 강화, 학생의 수요와 의견을 적극적으로 반영하는 민주적 학교 문화, 수업 중심의 교직 문화 정착을 정책적 제언으로 제시하였다.

서울소재 4년제 대학 입학자의 사회경제적 배경특성이 수시전형 입학에 미치는 영향 분석 : 2005∼2012년을 중심으로

남인혜(Nam, Inhye),서재영(Seo, Jae Young) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.6

최근 서울 주요대학을 중심으로 정시전형 확대가 발표됨에 따라, 어떠한 배경을 가진 학생이 수시 또는 정시전형에 유리한가에 대한 관심이 집중되었다. 본 연구는 2005년∼2012년 서울소재 4년제 대학 입학자를 대상으로, 수시 및 정시전형별 입학생의 사회경제적 배경특성 추이와, 학생의 사회경제적 배경특성이 수시전형을 통한 입학에 미치는 영향을 분석하였다. 분석에는 대졸자직업이동경로조사(GOMS) 데이터를 활용하였으며, 로짓회귀모형에 코호트 고정효과를 투입하였다. 분석 결과, 2005년 이래로 정시 입학자의 가구소득은 꾸준히 상승한 반면 수시 입학자의 가구소득은 하락세를 보인 점, 학생의 부교육연한 및 출신고교유형이 수시입학 여부에 유의한 영향을 미친 점, 사회경제적 배경특성의 유의한 영향이 입학사정관제 도입 및 대학 자율화 시기 이후에 나타난 점을 확인하였다. 이를 토대로 본 연구는 대입의 공정성 확보를 위해 정시전형확대보다 다면적인 고려가 필요하며, 수시를 통한 상위권 대학 입학 승산이 낮게 나타나고 있는 일반고 학생에 대한 지원이 필요함을 제언하였다. This study aims to empirically analyze the effects of students’ socio-economic background characteristics on admission to universities in Seoul region by type of admission process. In particular, this study tries to find out whether the early admission process based on various evaluation criteria is widening the admission opportunities of socio-economically disadvantaged students than the regular admission process based on CSAT grades. Drawing upon the collected data of freshmen between 2005-2012 from the Graduate Occupational Mobility Survey (GOMS), this study used logistic regression model with cohort-fixed effects. Study findings were as follows: First, the time-series shows that the average income level of students admitted through regular admission have been constantly on the rise while that of students admitted through early admission have been declining. Second, father’s year of education and types of highschool had significant effects on students’ admission opportunities through the early admission process. Third, the effects were mostly significant only for freshmen of 2008 or later, whereafter the Korean government has expanded the early admission process by introducing the Admission Officer System. Based on the findings, this study suggests that more careful policy designs are required than increasing the quota for regular admission and that measures should be taken to support students in General high schools who turned out to be less probable to be admitted to privileged universities through the early admission process.

Development of Waste Characterization System for the Life-Cycle of Decommissioning Nuclear Facilities

Inhye Hahm,Daeseo Koo,Kook-Nam Park,Seung-Kook Park,Sang Bum Hong,Bum-Kyoung Seo 한국방사성폐기물학회 2017 한국방사성폐기물학회 학술논문요약집 Vol.2017 No.10

A missense allele of <i>KARRIKIN-INSENSITIVE2</i> impairs ligand-binding and downstream signaling in <i>Arabidopsis thaliana</i>

Lee, Inhye,Kim, Kuglae,Lee, Sumin,Lee, Seungjun,Hwang, Eunjin,Shin, Kihye,Kim, Dayoung,Choi, Jungki,Choi, Hyunmo,Cha, Jeong Seok,Kim, Hoyoung,Lee, Rin-A,Jeong, Suyeong,Kim, Jeongsik,Kim, Yumi,Nam, Hon Oxford University Press 2018 Journal of experimental botany Vol.69 No.15

<▼1><P>A missense mutation of <I>KARRIKIN-INSENSITIVE2</I>, <I>KAI2</I><SUP><I>ply2</I></SUP>, compromises its ligand-binding activity, which subsequently impairs KAI2-signaling and multiple aspects of light-dependent responses.</P></▼1><▼2><P><B>Abstract</B></P><P>A smoke-derived compound, karrikin (KAR), and an endogenous but as yet unidentified KARRIKIN INSENSITIVE2 (KAI2) ligand (KL) have been identified as chemical cues in higher plants that impact on multiple aspects of growth and development. Genetic screening of light-signaling mutants in <I>Arabidopsis thaliana</I> has identified a mutant designated as <I>ply2</I> (<I>pleiotropic long hypocotyl2</I>) that has pleiotropic light-response defects. In this study, we used positional cloning to identify the molecular lesion of <I>ply2</I> as a missense mutation of <I>KAI2</I>/<I>HYPOSENSITIVE TO LIGHT</I>, which causes a single amino acid substitution, Ala219Val. Physiological analysis and genetic epistasis analysis with the KL-signaling components <I>MORE AXILLARY GROWTH2</I> (<I>MAX2</I>) and <I>SUPPRESSOR OF MAX2 1</I> suggested that the pleiotropic phenotypes of the <I>ply2</I> mutant can be ascribed to a defect in KL-signaling. Molecular and biochemical analyses revealed that the mutant KAI2<SUP>ply2</SUP> protein is impaired in its ligand-binding activity. In support of this conclusion, X-ray crystallography studies suggested that the <I>KAI2</I><SUP><I>ply2</I></SUP> mutation not only results in a narrowed entrance gate for the ligand but also alters the structural flexibility of the helical lid domains. We discuss the structural implications of the Ala219 residue with regard to ligand-specific binding and signaling of KAI2, together with potential functions of KL-signaling in the context of the light-regulatory network in <I>Arabidopsis thaliana</I>.</P></▼2>

Idiopathic bone cavity: clinical and radiological features of 90 retrospective cases and surgical treatment

Jihye Ryu,Inhye Nam,Sang-Hun Shin,Yong-Deok Kim,Jae-Yeol Lee 대한구강악안면외과학회 2021 대한구강악안면외과학회지 Vol.47 No.5

Objectives: The purpose of this study was to evaluate the clinical and radiographic characteristics of idiopathic bone cavity (IBC) to determine the effect of surgical intervention on the process of healing. Materials and Methods: All cases diagnosed with IBC during the period of 2011 to 2020 at our Department of Oral and Maxillofacial Surgery were searched. Ninety cases were retrieved. The features evaluated were sex, age, contour of the lesion, number of teeth involved, site, history of trauma, and postoperative healing pattern. The significance of differences was assessed by Mann-Whitney U test and chi-square test. Results: The female:male ratio showed no predilection toward either sex (0.9:0.8). The mean age of the collected sample was 22.05±14.38 years, and the age ranged from 10 to 58 years. All cases presented in the mandible and showed well-circumscribed radiolucency. Margins were either scalloped or round in shape, and the size varied from one tooth to six teeth involvement. Seventy cases involved three or fewer roots. Three cases showed bilateral lesion. Four cases had a history of trauma at the area of the lesion. Fifty-one cases were followed for six months after surgery, and all showed increased bone density at the lesion. Conclusion: There is no definitive radiological or clinical feature of IBC. Considering the diversity of clinical and radiological features, such a diagnosis relies primarily on surgical findings of an empty bone cavity with no epithelial lining. Our data suggest that surgical intervention be the first choice of treatment as opposed to observation.

기후기술센터네크워크(CTCN) 기술지원(TA) 분석을 통한 기후기술협력 활성화 방안에 대한 제언

박인혜(Bak, Inhye),신경남(Shin, Kyung Nam),양리원(Yang, Rywon),이수경(Lee, Sue Kyoung),장창선(Jang, Chang Sun),이종열(Lee, Jongyeol) 한국기후변화학회 2019 한국기후변화학회지 Vol.10 No.2

Cystic lesion between a deciduous tooth and the succeeding permanent tooth: a retrospective analysis of 87 cases

Changmo Sohn,Jihye Ryu,Inhye Nam,Sang-Hun Shin,Jae-Yeol Lee 대한구강악안면외과학회 2022 대한구강악안면외과학회지 Vol.48 No.6

Objectives: The purpose of this study is to investigate the characteristics of dentigerous and radicular cysts that occur between deciduous and suc-ceeding permanent teeth and to propose considerations for differential diagnosis of cysts at the treatment planning stage in the outpatient clinic. Materials and Methods: A total of 87 patients with a cystic lesion located between a deciduous tooth and the succeeding permanent tooth partici-pated in the study. Twelve variables were analyzed to diagnose such a cyst. For data analysis, Fisher’s exact test was used to determine the statistical significance of the variables. Results: Of the total 87 patients who participated in this study, 69 were diagnosed with dentigerous cysts and 18 were diagnosed with radicular cysts. Seven of the 12 differential factors analyzed in this study were statistically significant: age, location, symptoms, dental caries, endodontic treatment, delayed eruption, and size. Conclusion: Several criteria can be considered for diagnosis of dentigerous cysts or radicular cysts. Age, location, presence of symptoms and dental caries, previous endodontic treatment, cystic size, and delayed eruption of impacted permanent teeth are reliable factors that should be considered when diagnosing dentigerous and radicular cysts.

Pseudoruegeria aestuarii sp. nov., of the family Rhodobacteraceae, isolated from a tidal flat

Cha, In-Tae,Park, Inhye,Lee, Hae-Won,Lee, Hyunjin,Park, Jung-Min,Roh, Seong Woon,Choi, Hak-Jong,Nam, Young-Do,Lee, Yoo Kyung,Seo, Myung-Ji Microbiology Society 2016 International journal of systematic and evolutiona Vol.66 No.-

비행체 특성에 따른 함정표적 방어체계의 교전횟수 추정

우상효(SangHyo Woo),백인혜(InHye Baek),권기정(KiJeong Kwon),남화진(HwaJin Nam) 한국추진공학회 2021 한국추진공학회 학술대회논문집 Vol.2021 No.11