• 가정과삶의질연구
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• 제27권5호
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• pp.123-135
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• 2009

The purpose of this study was to investigate the effects of family conflict and self-control on school maladjustments of early adolescents. Subjects of this study consisted 662 middle school students drawn from 4 middle schools in Cheong-ju city. The results of this study were as follows: First, younger students' maladjustment to teachers was influenced by variables such as school year, economic levels, conflict strength between parents, conflict settlement between parents, reliability between parents and children, communication between parents and children and self-control, etc. In other words, students' maladjustment to teachers was high at the students in the 2nd year rather than in the 1st year, low economic level, high conflict strength between parents that younger students perceived, low conflict settlement between parents, low reliability between parents and children, high hostility between parents and children and low self-control. Second, younger students' maladjustment to the class was influenced by variables such as gender, school year, economic levels, conflict strength between parents, reliability between parents and children, communication between parents and children, and self-control, etc. In other words, young students' maladjustment to the class was high at the 2nd year students rather than at the 1st year students, low economic level, high conflict strength between parents, low reliability between parents and children, poor communication between parents and children, and low self-control. Third, younger students' maladjustment to rules was influenced by variables such as school year, economic level, conflict level between parents, hostility between parents and children, and self-control, etc. In other words, younger students' maladjustment to rules was high at the 1st year students rather than the 2nd year students of middle school, low economic level, high conflict strength between parents, high hospitality between parents and children and low self-control, etc. Fourth, younger students' maladjustment to friends was influenced by variables such as conflict strength between parents, conflict settlement between parents, hospitality between parents and children, and self-control, etc. In other words, younger students' maladjustment to friends was high at high conflict strength between parents, low conflict settlement between parents, high hospitality between parents and children and low self-control, etc. In the study, self-control was found to be the most important variable at younger students' maladjustment to teachers, class and rules, etc, and conflict settlement between parents was found to be the most significant variable at younger students' maladjustment to friends.

• Journal of Chest Surgery
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• 제25권2호
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• pp.137-148
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• 1992

Until March 1991, 435 St. Jude Medical valves and 330 CarboMedics valves were implanted in 358 and 251 patients, respectively. 300 patients were male and 309 were female with the mean age of 35.6 years[from 2 month to 68 years]. 458 valves were implanted in the mitral, 272 in the aortic, 25 in the tricuspid, and 10 in the pulmonic position. Postoperatively, all patients except for very young patients were given coumadin with or without dipyridamole for anticogulation Operative mortality was 7.3%[45 deaths per 618 operations]. A total follow-up of 1244.8 patient-years was achieved for the operative survivors with a follow-up rate of 96.8%, [mean follow-up period=26.3 months /patient, ranging from 1 to 80 months]. Functional improvement was evident; 66.7% of these patients were in NYHA functional class III or IV preopratively, whereas 98.4% are in class I or II pos-toperatively. There occurred 13 late deaths[7 valve-related] and 55 valve-related complications. Linearized rates of late death and valve-related complications were 1.0%/ patient-year, 4.42%/patient-year, respectively. Rates of thromboembolism, anticoagluation-related hemorrhage were 1.12%/patient-year, 1.69% /patient-year, respectively. Actuarial survival at 5 years is 96.0% and complication-free survival at 5 years is 83.9%. No difference in survival and incidence of complications was found between the St. Jude and CarboMedics valves. On the basis of this experience, we believe that the pyrolytic carbon bileaflet mechanical valves are safe and preferable choice among current valve prostheses.

• 대한예방한의학회지
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• 제17권1호
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• pp.163-179
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• 2013

Objectives : After analyzing the proficiency of medical communication of the students in College of Korean Traditional Medicine using standardized patients, we suggests ways to improve clinical practice in the future class and medical communication curriculum development. Methods : 20 students before clinical practice class (3rd grade) and 20 students after 1 year clinical practice class (4th grade) participated and did their medical interview on Standardized patient. They were evaluated on patient-physician communication skills by standardized patients and professor evaluator. In addition to be evaluated on patient-physician relationship, medical interview skills by professor evaluator. Results : As follows in the evaluation of clinical practice with standardized patients 1. More than half of the participated students regardless of their grade received poor score in their medical communication evaluated by SP(Standardized patient) and PE(Professor evaluator). 2. Greeting, History taking parts were higher in the 4th students who received 1 year clinical practice class, but verbal-nonverbal response, voice tone parts were higher in the 3rd students who do not received clinical practice lesson. 3. Pronunciation&Voice tone parts were higher in the male students but, gathering information part was higher in the female students. Conclusions : We think that the current clinical practice lessons are insufficient as a way to learn and improve medical knowledge and medical communication skills, and it is necessary a new form of clinical practice class. Participatory lesson using standardized patient could be a good alternative of that in the future class.

• Educational Technology International
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• 제19권2호
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• pp.175-197
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• 2018

Flipped classroom (FC) has gained attention as an active learning approach. Designing effective out-of-class activities to help prepare students for in-class activities is fundamental for successful implementation of FC. This study investigated the effectiveness of Goal-Based Scenarios (GBS) for out-of-class learning in FC. Four out of twelve units in a medical humanities course for Year 2 medical students was redesigned into a FC format, where e-learning modules were designed using a GBS approach for out-of-class activities and classroom debates were implemented for in-class activities. The other eight units were delivered in a conventional classroom debate format, which included reading text materials as pre-class assignments. A formative evaluation study was conducted using questionnaires and interview methods and students' academic achievements were evaluated by comparing their pre- and post-test scores between FC and conventional units. Students had positive perceptions of the e-learning modules in GBS approach and preferred the structure of learning in the FC format. Students' pre-test scores were slightly higher in the FC units, yet their post-test scores were comparable with conventional units. This study illustrates students' perceptions that the learning was bettered structured in FC and that the out-of-class learning using the GBS approach helped them better prepared for in-class activities.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제31권5호
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• pp.422-426
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• 2005

Purpose : The purpose of this study was to investigate the vertical stability after BSSRO surgery in skeletal class III malocclusion patients with mild anterior open bite and to present a method to increase the stability. Materials and methods : 36 patients, 11 male and 25 female, who received BSSRO surgery with the diagnosis of skeletal class III with anterior open bite at the Department of Oral and Maxillofacial Surgery in Samsung Medical Center, from January 2002 to August 2003, were selected for this study. The patients were between 18 to 45 years of age. Preoperative and postoperative (immediate, 6 months, and 1 year after operation) lateral cephalograms were compared to evaluate the vertical stability by measuring the distance of nasion-menton, mandibular plane angle, and overbite. Results : The nasion-menton distance decreased by 1.65mm immediately after the operation in comparison to the preoperative value. This distance further decreased by 0.60 mm at 6 months and 1.06mm at 1 year after the operation. The mandibular plane angle increased after the operation and further increased at 6 months and 1 year. The amount of overbite increased by the operation was 2.34mm and an additional increase of 0.70mm at 6 months and 0.94mm at 1 year were shown. Conclusion : Clinically, none of the patients showed relapse of anterior open bite and the vertical stability is highly influenced by orthodontic treatment after the operation. In this study, BSSRO surgery is considered to be a rather reliable procedure that restores stability to skeletal class III malocclusion patients with slight anterior open bite.

• 대한치과교정학회지
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• 제24권2호
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• pp.349-366
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• 1994

The method of treatment in skeletal Class III malocclusion must be chosen according to an etiology and timing of the treatment. Maxillry protraction has been used as an effective treatment method in growing children with maxillary deficiency. The efficacy of maxillary protraction has been viewed as a result of downward-backward displacement of mandible and compensatory dental displacement during the treatment rather than forward -downward growth of maxilla itself. In this study, 104 subjects treated with maxllary protraction, and 19 males and 21 females with known annual growth amount have been chosen longitudinally as treated group and normal group, respectively. And changes in position of maxilla, mandible and dentition have been comparatively analyzed on the lateral cephalometric radiographs by age. The results were as follows : 1. Treated group showed more forward movement of maxilla compare to the normal group and the mandible displaced backward compare to the normal group. 2. Downward movement of maxilla in treated group was similar to that of normal group with statistical signigicance in female 12 year old group and downward movement of mandible in treated group was similar to that of normal group. 3. In treated group, maxillary central incisor moved more forward than the normal group with statistical significance in male 8, 10 year-old groups and female 8, 9, 10 year-old groups. In treated group, downward movement of maxillary central incisor was similar to that of the normal group with statistical significance in male and female 7,8 year-old groups. Considering the above results and the duration of the treatment, the forward movement of maxilla due to maxillary protraction was effective compared to normal growth amount of the normal group.

• 한국지역지리학회지
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• 제14권2호
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• pp.159-172
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• 2008

본 연구의 목적은 중학교 사회 1학년과 3학년 지리 영역에서 지역 학습 내용을 분석하고, 세계화의 관점에서 수업을 재구성하는 데 있다. 중학교 사회 교과서에 다루어지는 지역 학습의 내용은 대부분 분절된 스케일을 상정하고 있으며, 로컬과 글로벌의 중층적인 측면을 거의 반영하고 있지 못하였다. 그리하여 경북 안동을 사례로 하여 학습 내용과 수업을 세계화 시대에 맞게 재구성하여 실시하였다. 세계화 전략으로서 지역 이미지를 디자인하는 수업을 위해 학생들로 하여금 안동시 홈페이지를 방문하여 자료를 수집하도록 하였다. 그러한 과정에서 학생들은 안동에서 실시하고 있는 지역 축제 및 이벤트, 그리고 지역 정책에 관심을 보이게 되었다. 많은 학생들은 안동의 새로운 지역 이미지를 디자인하는 활동에 매우 흥미를 보였으며, 세계화의 관점에서 지역을 이해하게 되었다고 하였다. 이와 같은 결과를 통해 볼 때, 앞으로 중학교 1학년 학생들의 발달 단계에 적실하면서도 경제적, 정치적, 문화적 세계화를 반영할 지역화 학습 사례와 프로그램이 더욱 개발되어질 필요가 있다.

• 대한지구과학교육학회지
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• 제10권2호
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• pp.199-213
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• 2017

이 연구의 목적은 지구과학 예비교사들이 수업 시연을 평가하며 좋은 과학 수업이 무엇이라고 생각하는지 알아보는 것이다. 연구는 우리나라 중부지방에 위치한 교사 양성 대학에 재학 중인 대학교 2학년 학생 32명을 대상으로 진행되었다. 32명의 예비교사들은 2인 1조로 수업을 시연하여 총 16회의 수업이 시연되었다. 또 자신의 수업을 제외한 15회의 수업에 참여하면서 수업을 평가하였다. 이렇게 수집된 평가지는 모두 480장이었다. 이 평가지를 분석하여 지구과학 예비교사들이 생각하는 좋은 과학수업에 대해 분석하였다. 연구 결과, 예비교사들의 좋은 과학 수업에 대한 관점은 3개 범주 9개의 주제 묶음으로 분석할 수 있었다. 3개의 범주는 '참여도가 높은 수업', '잘 구성된 수업 설계', '양질의 수업자료'이었다. 즉 예비교사들은 잘 짜여진 수업 설계, 활발한 상호작용이 좋은 과학 수업의 요건으로 생각하고 있었다. 이 연구는 예비교사들이 수업 시연 및 수업 평가의 경험을 통해 좋은 과학 수업에 대한 이미지를 그려갈 수 있다는 것을 확인시켜 주었다.

• Journal of Forest and Environmental Science
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• 제9권1호
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• pp.1-9
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• 1993

잣송이 수확기계의 개발을 위한 기초자료를 얻기 위하여 강원대학교 임과대학 부속연습림에서 7영급 및 4영급의 착과한 잣나무의 정단부위 성장특성과 착과특성을 1992년 8월 말부터 9월 중순까지 조사하였다. 1. 당년 성장한 가지의 길이는 4영급에서 주지는 27~56cm이고 측지는 18~47cm로 7영급보다 훨씬 왕성하였다. 2. 측지의 분지각은 $24{\sim}89^{\circ}$이었고, 2년 성장한 주지의 직경은 10~30mm로서 두 특징에 있어 영급간 유의적인 차이가 없었으나, 1년생 주지의 직청은 4영급에서 9~18mm로서 7영급보다 생장량이 더 높았다. 3. 착과수는 평균 5개, 구과 생중량은 평균 272g으로 영급간 유의적인 차가 없었다. 4. 2년 자란 주지의 착과위치는 그 마디 아랫 쪽으로부터 7영급에서는 9.7~33.0cm, 4영급에서는 18.0~51.0cm의 범위인 곳으로 평균위치는 각 마디의 1/2과 4/5되는 위치였다. 5. 착과한 나무에 있어서 구과, 1년생지 및 2년생지를 합한 총생중량의 범위는 1.0~7.4kg이었다.

• 한국환경복원기술학회지
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• 제4권4호
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• pp.1-11
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• 2001

This study was carried out to analyze the characteristics of forest environmental and stream morphological factors by using the quantification theory(I) for evaluation of the watershed stability. Present annual mean sediment yield of erosion control dams were investigated in 167 sites of erosion control dam constructed during 1986 to 1999 in Gyeongbuk. The results obtained from this study were summarized as follows; According to the coefficients of partial correlation, each factor affecting to sediment was shown in order of gravel contents, number of first streams order, number of total streams, length of total streams, forest type, length of main stream, parent rock, stand age, soil texture, stream order, slope gradient, soil depth and aspect. Descriptions of class I were as follow; Igneous rock of parent rock, hardwood stands of forest type, less than 20 year of stand age, less than 30cm of soil depth, sandy clay loam of soil texture, more than 41% of gravel contents, south~east of aspect, 2,501~3,500m of length of main stream, 21~25 of number of total streams, 5,501~10,000m of length of total streams, 3 or more than 4 of stream order, more than 16 of number of first stream orders and more than $31^{\circ}$ of slope gradient. Descriptions of class II were as follow; Metamorphic rock of parent rock, coniferous stands of forest type, more than 25 year of stand age, 31~40cm of soil depth, silt loam of soil texture, 11~20% of gravel contents, north~west of aspect, 2,501~3,500m of length of main stream, 16~20 of number of total streams, 3,501~5,500m of length of total streams, 3 of stream order, 11~15 of number of first stream orders and more than $31^{\circ}$ of slope gradient. Descriptions of class III were as follow; Sedimentary rock of parent rock, mixed stands of forest type, more than 25 year of stand age, more than 51cm of soil depth, silty clay loam of soil texture, less than 10% of gravel contents, south~west of aspect, less than 500m of length of main stream, less than 5 of number of total streams, less than 1,000m of length of total streams, less than 1 of stream order, less than 2 of number of first stream orders and less than $25^{\circ}$ of slope gradient. The prediction method of suitable site for erosion control dam divided into class I, II, and III for the convenience of use. The score of class I evaluated as a very unstable area was more than 8.4494. A score of class II was 8.4493 to 6.0452, it was evaluated as a moderate stable area, and class III was less than 6.0541, it was evaluated as a very stable area.