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      • 초등학교 6학년 영어 검정 교과서의 형태 초점 과제 적용 실태 분석

        정재희(Jung, Jae hee),김정렬(Kim, Jeong-ryeol) 한국교원대학교 초등교육연구소 2021 초등교과교육연구 Vol.35 No.-

        This study aims to analyze how focus on form (FonF) techniques are reflected on the sixth-grade elementary school English textbooks in Korea. The subjects of the study were task activities of five sixth-grade English textbooks based on the 2015 revised curriculum, and the textbook activities were analyzed by revised criteria for task analysis used in Kim Jung-eun s (2017). Data was processed by the SPSS 12.0 program and analyzed through a chi-squared test. The results of this study show that, according to the average frequency of tasks in all textbooks, practice tasks were used approximately twice as much as the consciousness-raising tasks. The tasks in each textbook accounted for a large portion in the order of grammar practice, interpretation tasks, and grammar activities. It has been confirmed that the difference between the amount of the raising awareness task and that of the practice task in the textbooks and between the amount of the grammar exercise task and that of the grammar practice activity task is statistically significant. Therefore, it is necessary to increase consciousness-raising tasks when developing textbooks and present more diverse tasks for raising awareness.

      • 만성신부전 환자에서 발생한 파종결핵

        정가영,나선경,윤혜원,송하응,류정화,류동열 이화여자대학교 의과학연구소 2013 EMJ (Ewha medical journal) Vol.36 No.1

        Patients with chronic renal failure (CRF) are known to be more susceptible to tuberculosis infection due to impairment of the host defense mechanism. Although extrapulmonary tuberculosis is more prevalent in those subjects and it may induce dismal outcome, its diagnosis has been challenging since there is no specific symptoms of the disease and the clinical course is usually atypical. Herein, We report a case of disseminated tuberculosis diagnosed by ultrasound-guided liver biopsy in a 31-year-old CRF patient presenting sustained fever despite broad-spectrum antimicrobial therapy and progressive cholestatic jaundice.

      • 초등학생의 체육수업에 대한 상태불안 연구

        문정옥,김병렬 仁荷大學校 스포츠科學硏究所 1998 論文集 Vol.10 No.-

        This study find out the character of anxiety for children's physical education class, with due regard to interaction with grade factor and sex factor, then make compare and verify anxiety point of pre-class in Korean language, Mathmatics, Physical education(difficulty-high), Physical education(difficulty-low), Moral as th detail work study. For test of anxiety level pre-class by subject, use to STAI Ⅱ, and pre-class five class goal show and measurement. Measurement data operated vitrificate of statistical analysis and get following conclusions. 1. In pre-class anxiety level, Physical education class(difficulty-high) was highest, the next Korean language, Physical education class(difficulty-low) and Moral were lowest. 2. Anxiety score of Mathematics pre-class was not a difference mean between five, six grade, in Moral showed that six gade higher anxiety score than five grade. 3. Anxiety score Korean Language, Mathematics, Physical education (difficulty-low), Moral pre-class were not difference mean between boy and girl children, in Physical education(difficulty-high) show that girl children were higher anxiety score than boy children. 4. As anxiety score of children pre-class was not difference mean from grade factor, sex factor and subject factor, there was not interaction in three factors.

      • 기성 콘크리트 파일 두부정리를 위한 자동화 장비의 개발

        이정호,김정렬,김영석,조문영,김성근 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

        During the last few years, the use of prefabricated concrete pile has been gradually increased in many construction sites. Cutting work of the concrete pile is an important task to crush a part of pile head which is compressed with more than 800㎏/㎠, It is usually performed by a crusher and three to four skilled workers. Recent analysis results of the pile cutting work reveal that it frequently makes a lot of cracks which significantly reduce the strength of the pile and is labor-intensive work. The primary objective of this study is to propose conceptual designs for developing an automated pile cutting machine. It is anticipated that the development of the automated pile cutting machine would be able to bring improvements in safety, productivity, quality as well as cost saving.

      • KCI등재

        생체모사환경에서 DLC 필름의 부식마모 특성에 미치는 Si 함량의 영향에 관한 연구

        김호건,김우중,김정구,박세준,이광렬 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.3

        In a method to improve resistance to wear, corrosion and mechanical properties of protective coating, DLC coatings have been extensively studied over the past several years due to their unique combination of properties. Especially, Si-DLC coatings have been attracting increasing interest of researchers since they have a great potential for solving some of the major disadvantages of pure DLC coatings. Si-incorporated diamond-like carbon (Si-DLC) coatings ranging from 0 to 2 at.% were deposited on Ti alloy substrate by means of r.f. plasma-assisted chemical vapor deposition (r.f. PACVD) technique, using mixtures of benzene (C_(6)H_(6)) and silane (SiH_(4)) as the reaction gases. Corrosion and wear behavior of DLC coatings was investigated by electrochemical techniques (potentiodynamic polarization test and electrochemical impedance spectroscopy), tribological techchnique(wear test) and surface analyses (atomic force microscopy, scanning electron microscopy and Raman spectroscopy). It was found that DLC coatings with increasing Si content could acquire improved corrosion and wear resistance in the simulated body fluid environment (0.89 wt.% NaCl of pH 7.4 at 37℃). (Received December 6, 2004)

      • KCI등재

        인공고관절용 스테인리스강 316L에 증착된 다이아몬드상 카본 필름의 전기화학적 특성에 관한 연구

        김호건,안승호,김정구,박세준,이광렬 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.4

        Diamond-like carbon (DLC) films have several advantages in applications such as high hardness, chemical inertness, low friction and electrical insulation. Furthermore, DLC-coated STS 316L films have been reported to have a good biocompatibility, such as the absence of inflammatory response. Thus, corrosion resistance is the first consideration for the biomaterials to be used in the body. DLC films have been deposited onto substrates of STB 316L for artificial hip joints using r.f PACVD (plasma-assisted chemical vapor deposition) with C_(6)H_(6) and mixture of C_(6)H_(6) and SiH_(4) as the process gases. Three kinds of DLC-coated films were prepared as a function of diverse bias voltage and Si incorporation. Corrosion behavior of DLC films was investigated by electrochemical techniques (potentiodynamic polarization test and electrochemical impedance spectroscopy) and surface analyses (atomic force microscopy and scanning electron microscopy). The electrolyte used in his test was a 0.89%NaCl solution of pH 7.4 at temperature 37℃. Electrochemical measurements showed that DLC films with higher bias voltage and Si incorporation could improve corrosion resistance in the simulated body fluid environment. (Received December 5, 2003)

      • KCI등재후보

        유기용제노출이 직업적 청력손실에 미치는 영향

        이지호,고영주,이헌,강정학,유철인,이충렬,김양호 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.4

        목적 : 산업 장에서 노출되는 유기용제가 청력역치에 어떠한 영향을 미치는가를 5년 동안의 추적조사를 통하여 파악하고자 하였다. 방 법 : 유기용제와 소음에 동시에 노출된 근로자 43명과 소음노출수준, 연령, 근무경력을 짝짓기 한소음노출군을 대상으로 문진과 이경검사, 소음노출 수준, 유기용제노출수준을 조사하였다. 결과 : 1. 전체 근로자의 각 주파수별 청력역치 변화양상에서 500Hz∼2000Hz에서는 추적기간 동 소음동안 현저한 변화가 없었고, 4000Hz 및 8000Hz에서는 역치가 증가하는 경향을 나타내었다. 2.유기용제와 소음에 동시에 노출된군에서 소음 노출군에 비해 4000Hz 이상에서 청력역치가 높게 나타났으나, 통계적인 유의성은 없었다(p(0.05). 3.반복측정 분산분석 법으로 각 주파수별 평균청력 역치의 연차적 변화에 미치는 영향을 분석한 결과 유기용제 노출은 통계적으로 유의한 영향이 없었으나(p)0.05), 소음노출수준은 250Hz, 2000Hz 및 4000Hz에서, 연령은 250Hz와 500Hz에서 통계학적으로 유의한 영향을 미치는 것으로 나타났다(p(0.05). 4.소음노출군파 동시노출군 각각에서의 청력역치 변화량을 paired t-test로 비교한 결과 250Hz∼4000Hz에서는 통계학적 유의성이 없었으며(p(0.1), 8000Hz에서만 경계치 (p=0.0884)의 유의성을 나타내었다. 5.요인들의 영향을 보정한 상태에서 관찰하기 위해 관찰기간동안의 청력역치변화량을 종속변수로 두고 일반선형모형을 이용하여 주파수별로 관찰한 결과 8000Hz에서만 모델에 통계학적 유의성이 있었으며 (p(0.05), 여기서 소음노출수준이 통계학적으로 유의한 영향을 미치는 것으로 나타났고(p(0.05), 유기용제노출은 경 계수준이 었다(p=0.087). 결론 : 청력에 대한 유기용제의 영향이 소음과 연령에 비해 상대적으로 미미하여 명확한 결론에 이르지는 못하였으나, 다소 영향이 있는 것으로 생각되어 유기용제의 영향에 대한 추가연구가 필요할 것으로 판단된다. 또한 보다 효과적인 근로자들의 청력관리를 위해서는 소음 외 산업 장에서 동시에 노출되는 여러 유해물질들을 고려하여야 할 것이다. Objectives : This study was to evaluate the impacts of simultaneous exposure to noise and mixed solvents on workers'hearing threshold level (HTL) over five-year period. Methods : The study was conducted by interview and annual audiometric test on workers in ship building industry from 1994 to 1998. The cases(workers who exposed to noise and mixed solvent simultaneously) were 43 male workers and controls (workers who exposed to nolle) were selected by matching method with regard to age, sex, carrier, and noise exposure level. To assess the impacts of solvent exposure on hearing threshold level, with considering other factors, general liner model was used. Results : 1. The audiogram of all subjects showed typical sensorineural hearing loss pattern. The mean HTLe were increased at high frequency (4000HB and 8000Hz) for study period. 2. The HTLs of cases were more increased than those of controls at high frequencies (4000Hz and 8000Hz), but there was not statlstical significance. 3. The impact of age on the HTL was statistically significant at 250Hz and 500Hz (p(0.05), and the impact of noise on the HTL was statistically significant at 250Hz, 2000Hz and 4000Hz (p(0.05), but the impact solvent exposure on the HTL was not significant. 4. The changes in HTLs of cases were higher than those of controls at high frequency, there were not statistical significance at 4000Hz, but only at 8000Hz (p=0.087). 5. Statistical analysis of the general linear model implicated that the changes in HTL was impacted by noise exposure bevel significantly (p=0.031) and Impacted by solvent exposure weakly (p=0.087) at 8000Hz. Conclusions : The results of this study suggest that workers who simultaneously exposed to noise and mixed solvent were at risk for more affected HTL than those exposed to noise exposure only, but we could not find definitive evidence. Further detailed studies must be made in large number of workers.

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