• 대한지구과학교육학회지
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• 제9권2호
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• pp.217-232
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• 2016

본 연구는 최근 과학의 본성이 강조되어가고 있는 시점에서 우리나라 7차 교육과정 공통과학 교과서에서 2009개정 교육과정 융합과학 교과서로 교육과정의 발전에 따라 과학의 본성 반영정도와 수준이 어떻게 변화되고 있는지 알아보았다. '과학의 본성'의 수준은 과학자들의 과학에 대한 관점을 나타내는 과학적 관점과 일반적으로 생각하거나 과학적 오개념을 나타낼 수 있는 순수한 관점으로, 교수 방법은 명시적 방법과 암시적 방법으로 분류하였다. 그렇게 과학적관점인지 순수한관점인지, 명시적인지 암시적인지의 총 4가지의 경우의 수를 이용하여 정의 하였다. Lederman(2001)의 7가지 정의를 참고한 10가지 항목을 이용해 교과서 안에 반영된 구성요소와 수준을 확인 할 수 있도록 '과학의 본성 분석 틀(NOSAT: Nature of Science Analyzing Tool)'을 개발하여 자료 분석에 사용하였고 연구결과, 교육과정이 7차 교육과정 공통과학에서 2009개정 교육과정 융합과학으로 변화함에 따라 과학의 본성에 대한 반영 정도는 발전보다 오히려 역행하고 있음을 확인 할 수 있었다. 탐구단원을 제외한 7차 교육과정 공통과학의 이론단원에서 명시적인 과학의 본성은 찾기 어려웠고, 2009개정 교육과정에서는 2007교육과정 탐구단원에서 볼 수 있었던 과학의 본성마저 사라진 것을 확인 할 수 있었다. 이러한 결과는 앞으로의 교육과정에서 과학의 본성이 제한적으로 표시될 것이 아니라 좀 더 적극적으로 반영하되 그 방법을 암시적이 아닌 명시적으로 반영하여 직접적인 교수가 되어야 할 것을 시사한다. 이를 위해서 교과서 집필자가 과학의 본성에 대한 정확한 이해를 가지고 집필해야 하고, 올바른 교수를 위해서 교사의 역량이 중요하며, 교사들을 대상으로 하는 과학의 본성에 대한 정확한 이해 및 실천에 대한 연수가 필요하다고 할 수 있다.

• Journal of Preventive Medicine and Public Health
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• 제46권6호
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• pp.293-299
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• 2013

Objectives: The purposes of this study were to evaluate the prevalence of epilepsy and to estimate the cost of epilepsy in Korea, 2010. Methods: This study used a prevalence based approach to calculate the cost of epilepsy. Claims data from the Korean national health insurance and data from the Korea health panel, the Korea National Statistical Office's records of causes of death, and labor statistics were used to estimate the cost of epilepsy. Patients were defined as those who were hospitalized or visited an outpatient clinic during 2010 with a diagnosis of epilepsy (International Classification of Diseases 10th revision codes G40-G41). Total costs of epilepsy included direct medical costs, direct non-medical cost and indirect costs. Results: The annual prevalence of treated epilepsy was 228 per 100 000 population, and higher in men. The age-specific prevalence was highest for teenagers. The total economic burden of epilepsy was 536 billion Korean won (KW). Indirect cost (304 billion KW) was 1.3 times greater than direct cost (232 billion KW). By gender, the male (347 billion KW) were more burdened than the female (189 billion KW). The estimated cost in young age younger than 20 years old was 24.5% of the total burden of epilepsy. Conclusions: A significant portion of the economic burden of epilepsy is borne by people in young age. To reduce the economic burden of epilepsy, effective prevention and treatment strategies are needed.

• Journal of Korean Neurosurgical Society
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• 제50권2호
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• pp.89-94
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• 2011

Objective : D-dimer is a breakdown product of fibrin mesh after factor XIII stabilization. Previously, many authors have demonstrated a relationship between D-dimer level and stroke progression or type. This study aimed to investigate the relationship between D-dimer level and stroke volume. Methods : Between January 2008 and December 2009, we analyzed the D-dimer levels of 59 acute ischemic stroke patients in our neurosurgical department both upon admission and after seven days of initial treatment. Each patient's National Institute of Health Stroke Scale score, modified Rankin Scales score, Glasgow outcome score, and infarction volume were also evaluated. Results : Mean D-dimer level at admission was 626.6 ${\mu}g/L$ (range, 77-4,752 ${\mu}g/L$) and the mean level measured after seven days of treatment was 238.3 ${\mu}g/L$ (range, 50-924 ${\mu}g/L$). Mean D-dimer level at admission was 215.3 ${\mu}g/L$ in patients with focal infarctions, 385.7 ${\mu}g/L$ in patients with multiple embolic infarctions, 566.2 ${\mu}g/L$ in those with 1-19 cc infarctions, 668.8 ${\mu}g/L$ in 20-49 cc infarctions, 702.5 ${\mu}g/L$ in 50-199 cc infarctions, and 844.0 ${\mu}g/L$ in >200 cc infarctions (p=0.044). On the 7th day of treatment, the D-dimer levels had fallen to 201.0 ${\mu}g/L$, 293.2 ${\mu}g/L$, 272.0 ${\mu}g/L$, 232.8 ${\mu}g/L$, 336.6 ${\mu}g/L$, and 180.0 ${\mu}g/L$, respectively (p=0.530). Conclusion : Our study shows that D-dimer level has the positive correlation with infarction volume and can be use to predict infarction-volume.

• Journal of Astronomy and Space Sciences
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• 제31권4호
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• pp.317-323
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• 2014

Odyssey, one of the NASA's Mars exploration program and SELENE (Kaguya), a Japanese lunar orbiting spacecraft have a payload of Gamma-Ray Spectrometer (GRS) for analyzing radioactive chemical elements of the atmosphere and the surface. In these days, gamma-ray spectroscopy with a High-Purity Germanium (HPGe) detector has been widely used for the activity measurements of natural radionuclides contained in the soil of the Earth. The energy spectra obtained by the HPGe detectors have been generally analyzed by means of the Window Analysis (WA) method. In this method, activity concentrations are determined by using the net counts of energy window around individual peaks. Meanwhile, an alternative method, the so-called Full Spectrum Analysis (FSA) method uses count numbers not only from full-absorption peaks but from the contributions of Compton scattering due to gamma-rays. Consequently, while it takes a substantial time to obtain a statistically significant result in the WA method, the FSA method requires a much shorter time to reach the same level of the statistical significance. This study shows the validation results of FSA method. We have compared the concentration of radioactivity of $^{40}K$, $^{232}Th$ and $^{238}U$ in the soil measured by the WA method and the FSA method, respectively. The gamma-ray spectrum of reference materials (RGU and RGTh, KCl) and soil samples were measured by the 120% HPGe detector with cosmic muon veto detector. According to the comparison result of activity concentrations between the FSA and the WA, we could conclude that FSA method is validated against the WA method. This study implies that the FSA method can be used in a harsh measurement environment, such as the gamma-ray measurement in the Moon, in which the level of statistical significance is usually required in a much shorter data acquisition time than the WA method.

• Journal of Acupuncture Research
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• 제25권1호
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• pp.221-232
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• 2008

Objectives : The study was performed to evaluate the effect of treatment for spondylolisthesis by using electroacupuncture at Hua-Tuo-Jia-Ji-Xue is located about 0.5Cun(寸) at both sides of spinous process of each vertebra. Methods : This clinical study was carried out 5 case with spondylolisthesis, who had bean treated from December, 2006 to November, 2007, in the department of acupuncture and moxibustion, Dongshin University Oriental Medical Hospital. We treated the patient who was diagnosed as spondylolisthesis by simple X-ray or MRI. Results : 1. Degenerative type is 3 cases, and isthmic type is 2 cases. 2. In the distribution of injured level was between 4-5th lumbar vertebra the most(3 cases). 3. The improvement index showed 0.29, 0.56, 0.43 points in degerative type, and 0.39, 0.36 points in isthmic type. 4. Therapeutic efforts above "good" by Kim's criteria was 4 cases. 5. Good improvement was showed in VAS about average 3.4. Conclusions : There was reports about Hua-Tuo-Jia-Ji-Xue electronic acupuncture treatment of patients with spondylolisthesis. It is very effective to improve condition of patients with spondylolisthesis.

• 복식문화연구
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• 제15권2호
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• pp.232-251
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• 2007

The purpose of this study was to understand sexuality expressed in fashion in a discursive view and reinterpret sexuality represented in fashion in the 19th century in Foucauldian post-structural perspective. As for methodology, at first the conception of sexuality was examined from structural feminism to post-structural pluralism by a literature review and discussed in relation with the matters of body and fashion on the basis of Foucault's discourse. Then, sexuality represented in the 19C fashion as a case study was re-estimated in terms of power relationship between dominant and oppositional discourses and mainstream fashion and anti-fashion as well. The conception of sexuality in Foucauldian post-structuralism maintains the view of plural sexuality, which floats by discourse and power produced in a specific historical context. In the Foucauldian perspective sexuality expressed in the mainstream fashion and anti-fashion in the nineteenth century shows the following aspects. The mainstream fashion in the middle and latter of the 19C made the clear sexual difference in dress of plain and functional male suit and extravagant and decorative female dress on the center of bourgeois masculinity in the context of modernity and capitalism. Although anti-fashion was also co-existed with the mainstream fashion, it was criticized by the Victorian people. It codifies sexual ideology of the binary opposition of male domination and female subordination. Therefore, the traditional sexual ideology in the 19C is a capitalist value, which gives a priority to bourgeois man's profits, and the Victorian discourses of sexuality constructs the clear sexual difference in dress in the period.

• Journal of Radiation Protection and Research
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• 제41권2호
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• pp.101-104
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• 2016

Background: To protect the public from natural radioactive materials, the 'Act on safety control of radioactive rays around living environment" was established in Korea. There is an annual effective dose limit of 1 mSv for products, but the activity concentration limit for products is not established yet. Materials and Methods: To suggest the activity concentration limits for consumer goods containing NORM, in this research, we assumed the "small room model" surrounding the ICRP reference phantom to simulate the consumer goods in contact with the human bodies. Using the Monte Carlo code MCNPX, we evaluate the effective dose rate for the ICRP reference phantom in a small room with dimension of phantom size and derived the activity concentration limit for consumer goods. Results and Discussion: The consumer goods have about 1600, 1200 and $19000Bq{\cdot}kg^{-1}$ for $^{226}Ra$, $^{232}Th$ and $^{40}K$, and the activity concentration limits are about six times comparing with the values of building materials. We applied the index to real samples, though we did not consider radioactivity of $^{40}K$, indexes of the some samples are more than 6. However, this index concept using small room model is very conservative, for the consumer goods over than index 6, it is necessary to reevaluate the absorbed dose considering real usage scenario and material characteristics. Conclusion: In this research, we derived activity concentration limits for consumer goods in contact with bodies and the results can be used as preliminary screening tool for consumer goods as index concept.

• 한국콘텐츠학회논문지
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• 제15권1호
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• pp.221-232
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• 2015

남자 고등학생이 인지하는 삶의 질, 가족건강성, 자아탄력성이 학교적응에 미치는 영향을 확인하여 성공적인 학교적응을 위한 교육 프로그램 개발에 기초가 되는 자료를 제공하고자 서술적 상관관계 조사연구를 실시하였다. A시 소재의 1학년, 2학년 남자 고등학생 569명을 대상으로 삶의 질, 가족건강성, 자아탄력성과 학교적응과의 상관관계를 분석하고, 학교적응에 영향을 미치는 요인을 파악하기 위해 t-test와 ANOVA, 다중회귀분석(multiple regression analysis)을 실시하였다. 그 결과 아버지 직업, 어머니 학력, 학업성적, 경제 수준, 흡연과 음주 유무, 자살시도나 자살생각이 학교적응에 통계적 유의한 차이를 나타냈고, 학업성적, 자살생각, 삶의 질, 가족건강성, 자아탄력성이 학교적응의 영향 요인으로 나타났고, 설명력은 61.4%이었다. 그러므로 학생들의 삶의 질, 가족건강성, 자아탄력성을 증진시켜주며, 삶의 질을 높여줄 수 있는 학교와 가정, 사회가 연계된 프로그램의 시행이 필요하다.

• 암석학회지
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• 제10권3호
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• pp.222-232
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• 2001

이차이온질량분석기는 고속으로 가속된 일차이온을 고체 시료 표면에 충돌시켜, 이차이온을 발생시킨 후 질량분석 장치를 통해 분석하는 장치이다. 시료에 충돌하는 일차이온빔의 크기를 마이크론 단위까지 줄여 미세영역에 대한 분석이 가능하므로 이온현미분석기라고도 불린다. 이차이온질량분석기의 정밀도와 정확도는 고전적인 질량분석기에 비해 떨어진다. 하지만, 극소량의 시료로 분석이 가능하며, 화학적 전처리 과정 없이 연마편을 이용하여 매우 좁은 영역에서 동위원소의 분포를 연구할 수 있다는 장점이 있다. 지구화학/우주화학 분야에서 이차이온질량분석기의 활용은 최근 급속히 증가하고 있으며, 주로 (1) 수소, 탄소, 산소, 황 등의 안정동위원소 연구, (2) 함 우라늄/토륨 광물의 절대연령측정, (3) 광물 내 미량원소의 분포 연구, (4) 선태양계 광물 발견 및 이들의 동위원소 연구 등에 사용되고 있다.

• Journal of Electrochemical Science and Technology
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• 제5권1호
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• pp.32-36
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• 2014

The $0.3Li_2MnO_3{\cdot}0.7LiMn_{0.55}Ni_{0.30}Co_{0.15}O_2$ cathode material was prepared via a co-precipitation method. The vapor grown carbon fiber (VGCF) was used as a conductive material and its effects on electrochemical properties of the $0.3Li_2MnO_3{\cdot}0.7LiMn_{0.55}Ni_{0.30}Co_{0.15}O_2$ cathode material were investigated. From the XRD pattern, the typical complex layered structure was confirmed and a solid solution between $Li_2MnO_3$ and $LiMO_2$ (M = Ni, Co and Mn) was formed without any secondary phases. The VGCF was properly distributed between cathode materials and conductive sources by a FE-SEM. In voltage profiles, the electrode with VGCF showed higher discharge capacity than the pristine electrode. At a 5C rate, 146 mAh/g was obtained compared with 232 mAh/g at initial discharge in the electrode with VGCF. Furthermore, the impedance of the electrode with VGCF did not changed much around $9-10{\Omega}$ while the pristine electrode increased from 21.5${\Omega}$ to $46.3{\Omega}$ after the $30^{th}$ charge/discharge cycling.