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김효남,노금자,김화숙 한국교원대학교 과학교육연구소 1996 청람과학교육연구논총 Vol.6 No.1
The 1st and 2nd grade science-related textbooks of Japan and Korea are analyzed according to analysis system, which is consisted of knowledge and scientific inquiry processes categories. Each sentence in the textbooks is considered as an analyzing unit. The frequency and percentage of each category are counted and calculated. The results of this study are: 1. The frequency of scientific inquiry processes is more than that of knowledge in all of the 1st and 2nd grade textbooks. 2. Communication, problem cognition and observation are mostly emphasized in scientific inquiry process category. 3. Most of knowledge are factual scientific knowledge. 4. Science related contents are mostly biological knowledge, which is observing animal/plant and raising plant. Korean textbook include more physical science related contents like magnet and air.
악골에 발생한 중심성 골종(Central Osteoma)의 치험례
김일규,김효정,최진호,장금수,오남식 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1
Two cases are described of Endosteal Osteoma which developed in the Jaw bone and were painful. The tumors were radiographically characterized by dense radiopaque lesion. The surface was smooth and overlying mucosa was normal in color. Tentative diagnosis was OSteoma. The tumors were treated surgically. Postoperatively the patients made uneventful recovery and the wound healed satisfactory. Postoperative radiograph showed that radiopaque mass had been completely removed. Histologically, biopsy was reported as Central Osteoma. Subsequent follow-up examinations show no recurrence of the lesion or the pain.
과학적 상황과 일상적 상황에 따른 초등학생들의 용해 개념
노금자,김효남 한국교원대학교 과학교육연구소 1996 청람과학교육연구논총 Vol.6 No.1
This study is to know the elementary school pupils' dissolution conceptions according to the two contexts, scientific and everyday, especially characteristics and styles of the students' conceptions, and to analyze their misconceptions. In this study, 445 students (male 214 and female 231) were selected from the 4th to 6th grade of two elementary schools in the urban and the rural area. The questions were consisted of solution, homogeneity of a solution, concentration, conservation of mass and solubility of solid. The students were given altogether five pairs of paper and pencil type questions about dissolution. Two questions within each pair had the same cognitive demand except contexts. First, the questions of everyday context were administrated and, two weeks later, the questions of scientific context. In the results of this study, significant difference was found between the responses of each context. The pupils' achievements of dissolution concepts were significantly higher in scientific contexts than in everyday contexts. There was no significant difference between the male and the female students, but between the urban and the rural. The urban students have more correct scientific dissolution conceptions than the rural. As a result, pupils' concepts have the context dependancy that students adopts differently when the question contexts are different in spite of the same concepts.
Kim, Young Joong,Lee, Eun Hye,Jun, Jae Kwan,Shin, Dong-Rock,Park, Young Mi,Kim, Hye-Won,Kim, Youme,Kim, Keum Won,Lim, Hyo Soon,Park, Jeong Seon,Kim, Hye Jung,Jo, Hye-Mi unknown 2017 KOREAN JOURNAL OF RADIOLOGY Vol.18 No.4
<P><B>Objective</B></P><P>To analyze participant factors that affect the diagnostic performance of screening mammography.</P><P><B>Materials and Methods</B></P><P>We enrolled 128756 cases from 10 hospitals between 2005 and 2010. We analyzed recall rate, cancer detection rate (CDR) per 1000 examinations, positive predictive value (PPV), sensitivity, specificity, false positive rate (FPR), and interval cancer rate (ICR) per 1000 negative examinations according to participant factors including age, breast density, and number of visit to the same institution, and adjusted for confounding variables.</P><P><B>Results</B></P><P>Increasing age improved recall rates (27.4% in 40's, 17.5% in 50's, 11.1% in 60's, and 8.6% in 70's), CDR (2.7, 3.2, 2.0, and 2.4), PPV (1.0, 1.8, 1.8, and 2.8%), sensitivity (81.3, 88.8, 90.3, and 94.7%), specificity (72.7, 82.7, 89.0, and 91.7%), and FPR (27.3, 17.3, 11.0, and 8.4%) (<I>p</I> < 0.05). Higher breast density impaired recall rates (4.0% in P1, 9.0% in P2, 28.9% in P3, and 27.8% in P4), PPV (3.3, 2.3, 1.2, and 1.3%), specificity (96.1, 91.2, 71.4, and 72.5%), and FPR (3.9, 8.9, 28.6, and 27.6%) (<I>p</I> < 0.001). It also increased CDR (1.3, 2.1, 3.3, and 3.6) and ICR (0.2, 0.3, 0.6, and 1.6) (<I>p</I> < 0.05). Successive visits to the same institution improved recall rates (20.9% for one visit, 10.7% for two visits, 7.7% for more than three visits), PPV (1.6, 2.8, and 2.7%), specificity (79.4, 89.6, and 92.5%), and FPR (20.6, 10.4, and 7.5%) (<I>p</I> < 0.001).</P><P><B>Conclusion</B></P><P>Young age and dense breasts negatively affected diagnostic performance in mammography screening, whereas successive visits to the same institution had a positive effect. Examinee education for successive visits to the same institution would improve the diagnostic performance.</P>
김병호,이정일,김효종,김영관,장린,동석호,장영운,김금정 대한소화기내시경학회 1993 Clinical Endoscopy Vol.13 No.1
Crohn's disease of the duodenum is a rare disorder that should be considered in patients with distal Crohn's disease in whom significant upper gastrointestinal symytoms develop. A combination of diagnostic tools, including attentive history taking.and appropriate radiographic and endoscopic studies, should be applied to make the diagnosis, Although not always confirmatory, careful histologic study if adequate biopsy material may be helpful. Medical treatment should be the treatment of choice for all patients with nonobstructing Crohn's disease of the duodenum and is similar to that of Crohn's disease elsewhere in the gastrointestinal tract. If obstruction develops, bypass surgery is indicated. We experienced a case of Crohn's disease of the duodenum and reported with the review of the literature.