• School Mathematics
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• v.17 no.1
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• pp.135-156
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• 2015

There is a difference in quality between transition from elementary school to junior high school and the simple change of grades. This time is also a critical time that many students would be to abandon the mathematics. According to experience in conjunction with mathematics, this timing can be either bright or dark outlook with relation to mathematical development. Thus, at this turning point, it is necessary to analyze what changes the students are experiencing in teaching and learning mathematics, what such changes effect the students, whether or not there is room for improving such changes etc. Therefore, in this study, by comparing and analyzing math lessons of 6th grade in elementary school and 1st grade in junior high school, we investigate the difficulties of teaching and learning mathematics experienced by students who have been placed in the turning point and suggest implications to help them to land softly into junior high school.

• Journal of Educational Research in Mathematics
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• v.11 no.1
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• pp.11-35
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• 2001

Many teachers report familiarity with and adherence to reform ideas, but their actual teaching practices do not reflect a deep understanding of reform. Given the challenges in implementing reform, this study intended to explore the breakdown that may occur between teachers' adoption of reform objectives and their successful incorporation of reform ideals. To this end, this study compared and contrasted the classroom social norms and sociomathematical norms of two United States second-grade teachers who aspired to implement reform. This study is an exploratory, qualitative, comparative case study. This study uses the grounded theory methodology based on the constant comparative analysis for which the primary data sources were classroom video recordings and transcripts. The two classrooms established similar social norms including an open and permissive learning environment, stressing group cooperation, employing enjoyable activity formats for students, and orchestrating individual or small group session followed by whole group discussion. Despite these similar social participation structures, the two classes were remarkably different in terms of sociomathematical norms. In one class, the students were involved in mathematical processes by which being accurate or automatic was evaluated as a more important contribution to the classroom community than being insightful or creative. In the other class, the students were continually engaged in significant mathematical processes by which they could develop an appreciation of characteristically mathematical ways of thinking, communi-eating, arguing, proving, and valuing. It was apparent from this study that sociomathematical norms are an important construct reflecting the quality of students' mathematical engagement and anticipating their conceptual learning opportunities. A re-theorization of sociomathematical norms was offered so as to highlight the importance of this construct in the analysis of reform-oriented classrooms.

• Journal of Chest Surgery
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• v.34 no.11
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• pp.879-882
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• 2001

advancement in the treatment of esophageal perforation due to the development of ICU care and antibiotics. There were controversies in the treatment of esophageal perforation when diagnosed after 24hrs. From 1995 to 2000, we performed a buttressed primary repair and mediastinal drainage in 6 Boerhaave\`s syndrome patients among 13 esophageal perforation patients. Two patients died(33%). They died because of pneumonia, ARDS and sepsis on 38th, 39th post-operative day respectively. Two patients had leak at the site of repair which was treated completely with conservative treatment. We report on the result of a buttressed primary repair and mediastinal drainage for 6 Boerhavve\`s syndrome patients.

• 한국정보교육학회:학술대회논문집
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• 2010.08a
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• pp.265-270
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• 2010

The qualification test for robot technology is developed to provide a standard for evaluating professional knowledge on robotics and is currently under consideration to be one of the government-approved qualification tests. This test has a level to which elementary school students can apply, but is not recognized by most teachers in elementary school compared to so called "after school robot classes." This paper addresses and analyzes the current status of the test, in particular, the qualification standards, organizing committee, examples of problems used in the test, etc. It is suggested that the level of difficulty and contents covered should be properly adjusted. Moreover, it is essential to provide well organized supplementary material for students and wide range of contents on which a solid standard for evaluating robot technologies can be developed.

• Archives of Reconstructive Microsurgery
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• v.2 no.1
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• pp.29-41
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• 1993

Recent advances in microsurgery have made it possible to provide a continued circulation of blood to the grafted bone so as to ensure viability. With the nutrient blood supply preserved, healing of the graft to the recipient bone is facilitated without the usual replacement of the graft by creeping substitution. We reviewed 34 cases of vascularized osteocutaneous fibular transfers to the infected tibial defect complicated with skin defect, which were performed from May, 1982 to January, 1992, and the following results were obtained: 1. Despite of uncontrolled bone infection with skin defect, the vascularized osteocutaneous fibular flap transfer could be performed. 2. In the vascularized osteocutaneous fibula transfer, the patency of anastomoses could be indirectly monitored by observing the color of the skin flap. 3. The vascularized fibula had been hypertrophied with bony union during the follow-up period of 13 months to 6 years and 4 months(average, 30 months) and there was no resorption of the grafted fibula. 4. There was no fracture of the grafted fibula in parti resection of involved tibia. 5. The hypertrophic potentiality of grafted fibula could be inhibited by the infection status as operation site.

• The Journal of Korean Medicine
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• v.33 no.1
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• pp.52-67
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• 2012

Objectives: The purpose of this study was to evaluate the effects and develop the contents of a children's care program with traditional Korean medicine in a public health center. Methods: Data were collected from 28 parents who participated in a children care program with traditional Korean medicine. The program was started in June of 2011 in Gangjin-Gun public health center and finished in September of the same year. The questionnaires to measure effect and satisfaction with the program were composed of demographic items, family information, Psychological Well-Being Scale (PWBS), Parenting Stress Index (PSI), children health improvement checklist, etc. The questionnaires were executed before and after the program. Results: The PWBS scores increased (4.00, 3.66) and PSI scores decreased (-7.30. -5.95) significantly after the program. The satisfaction with the program was 100%, and 94% in the two groups, and treatment and lecture were mentioned as the best aspects of the program. Eating habits, sleep conditions, and activity also improved after the program. Conclusions: From these results, the children care program with traditional Korean medicine is worthy for improving children's health condition and reducing their parents' stress.

• Journal of environmental and Sanitary engineering
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• v.22 no.2
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• pp.53-60
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• 2007

A pilot study was conducted in order to investigate the concentration of formaldehyde at elementary school, middle school, the high school (108 classrooms) located in Chungchong-namdo during February - September, 2006. Also, divide by (45 classroom) General Classroom and (63 classrooms) Stateroom. The average concentrations of formaldehyde(HCHO) in the general classroom was high by $22.87\;{\pm}\;20.61\;{\mu}g/m^3$ elementary school, $22.08\;{\pm}\;12.70\;{\mu}g/m^3$ high school, $13.58\;{\pm}\;6.60\;{\mu}g/m^3$ middle school. The average concentrations of formaldehyde(HCHO) in the Stateroom was high by $27.58\;{\pm}\;30.5{\mu}g/m^3$ elementary school, $22.03\;{\pm}\;19.12\;{\mu}g/m^3\;22.87\;{\pm}\;20.61\;{\mu}g/m^3$ middle school, $24.92\;{\pm}\;28.15\;{\mu}g/m^3$ high school. There was correlation between formaldehyde concentrations and temperature, humidity in general classroom (P<0.05).

• The Korean Journal of Nuclear Medicine
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• v.16 no.2
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• pp.1-24
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• 1982

Several recent advances in our knowledge of thyroid physiology have broad application to the diagnosis and management of thyroid disorders. For in the thyroid, more than other endocrine organs, pathophysiology can be translated directly into the diagnosis and management of thyroid disease. Graves' disease is a syndrome including goiter with hyperthyroidism, exophthalmos and dermopathy. The pathogenesis of Graves' disease is not yet clearly identified, but various autoantibodies to the thyroid gland and immunopathologic studies indicate that autoimmune processes are involved in the pathogenesis of the disease. The diagnosis and management of Graves' disease are largely dependent on radionuclide techniques as radioimmunoassay, radioactive iodine therapy and so on. Several laboratory tests are also developed to determine the remission of this disase including TRH stimulation test, $T_3$ suppression test and detection of thyroid stimulating immunoglobulins. Autoimmune thyroiditis is almost certainly a primary immunologic disease and the incidence tends to increase recently, mainly due to the application of biopsy technique in thyroid diseases. Thyroid nodules have been a great challenge to physicians because of the possibility of malignancy. But recently, cytologic examination of thyroid aspirate provides a very simple and also reliable diagnostic method in patients with thyroid nodules. In 163 patients with thyroid nodules, only 19.3% was revealed to be malignant. Therefore cytologic examination of thyroid aspirate and thyroid biopsy should be included in the diagnosis of nodular patients prior to surgical intervention. In this paper, a comprehensive review is presented on the pathogenesis, clinical features, laboratory findings and therapeutic modalities of various thyroid diseases on the basis of over 80 researches performed during the past 20 years at radioisotope clinic, Seoul National University Hospital.

• Journal of Chest Surgery
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• v.30 no.3
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• pp.300-307
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• 1997

We have experienced 25 cases of aortic aneurysm from October 1987 to January 1996. Patients ranged in age from 26yrs to 73yrs(mean age 52. Syrs). There were 13 males and 12 females. Eighteen cases were thoracic aneurysm and seven were abdom nal aneurysm. The cause of aneurysm were dissecting in 16cases aneurysms and non-dissecting in 9 cases. Risk factors of aortic aneurysm were hypertension, hypercholesterolemia, Marfan's syndrome. In thoracic aneurysm patients, 1'S cases of dissecting aneurysm underwent aneurysmectomy and replacement of vessel interposition graft with or without coronary artery implantation on the graft. 6 cases of non-dissecting aneurysm underwent operation with same policy as dissecting aneurysm. In 7 case of abdominal aneurysm,all patients underwent aneurysmectomy and graft interposition with straight i)r Y graft. Thcre were 5 postoperative death(mortality 20%). Several cases of complications were improved with proper managements. All survivors showed improvement in clinical symptom and sign and discharged without specific complications.

• The Journal of the Korea Contents Association
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• v.18 no.8
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• pp.157-165
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• 2018

The purpose of this study is to investigate the effectiveness of general use of English literary works. It will be helpful for both general English learners and college students majoring English Education in ESL or EFL context. English literature is very useful pedagogical tool in the language class due to its unique valuable characteristics including authenticity, cultural and linguistic value, and personal enrichment, which impact on fostering English ability of EFL students. For this reason, it is unavoidable to develop a theory and practice regarding using English literature as an educational resource for college students in Korea. In this study several considerations will be discussed in terms of selection of the literary works to be applied for language learning purpose in the classrooms of universities in Korea. Such attentions will include fours skills of English such as reading, writing, listening and speaking. Finally, some effects and implications of using literary text as a pedagogical tool in the EFL language classrooms will be discussed.