• Journal of Gifted/Talented Education
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• v.12 no.1
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• pp.31-60
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• 2002

Several aspects seen to be related to the phenomenon of having few female Olympians. This study focused on the gender stereotypic parental belief in female child's talent area and lack of parental nurturing behavior on female children in math and science. Other aspects such as females dislike of competition, lack of network, dislike of extraordinary achievement are also included for discussion. The find out how girls and boys became Olympians, 23 male Olympians and 4 female Olympians and their parents were surveyed with questionnaire, on the parental belief, encouragement, and nurturing behaviors. Two Olympians and two non-Olympians were also interviewed to find out what made them to continue to participate in Olympiad or give up Olympiad.

• 종축개량
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• v.9 no.11 s.46
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• pp.47-51
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• 2005

• Journal of Wetlands Research
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• v.18 no.1
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• pp.39-44
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• 2016

The reuse of spent coffee powder has been researched for environmental engineering applications such as adsorbents of organic/inorganic pollutants. In this study adsorption equilibrium tests and adsorption kinetics tests for the removal of aqueous organic pollutant (methylene blue) were conducted using spent coffee powder, granular activated carbon, and powdered activated carbon. It was found that the maximum adsorption capacity of three adsorbents followed the order of powdered activated carbon (178.6 mg/g) > spent coffee powder (60.6 mg/g) > granular activated carbon (15.6 mg/g). The results of adsorption kinetics tests also indicated that spent coffee powder had higher kinetic parameters than granular activated carbon for pseudo 1st and 2nd order kinetics. The high performance of spent coffee powder might be due to its porous surface like those of granular and powdered activated carbons and smaller particle size comparing with granular activated carbon.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2005.05a
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• pp.116-118
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• 2005

강화된 배출수 허용 농도를 만족시키기고 염색폐수의 적정 처리를 위하여 두 가지 생물학적 처리방법을 거친 처리수에 입상활성탄을 적용하여 흡착의 적용성과 흡착의 강도, 경제적인 실용가능성을 알아보기 위해 Batch 실험을 실시한 결과는 다음과 같다. 활성탄을 흡착공정에 적용하기 전에 수행되는 흡착능력을 평가하는 등온흡착실험을 수행한 결과 대상폐수 I ,II과 활성탄의 흡착능력은 Langmuir isotherm을 적용하여 표현하는 것이 가장 적합하다.

• 한국정보교육학회:학술대회논문집
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• 2004.08a
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• pp.397-405
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• 2004

선진 각국에서는 지식기반 정보사회로의 급속한 이행과 사이버 공간의 확장에 따라 사이버 교육에 대한 법적 제도적 근거를 마련함은 물론 이의 적극적인 활용을 모색하고 있다. 우리나라에서는 교육혁신과 인적자원개발을 위한 2단계 교육정보화종합발전 방안을 마련 및 교육과정의 개편, 실행에 옳기고 있다. 새로운 이론인 구성주의에 근거 마련된 제7차 교육과정에서는 교수 학습시 ICT의 활용을 적극 권장하는 바, 훈련 받은 교사에 의한 아동의 교수 학습 효과가 현저하여 교사의 ICT활용 관련 기회의 요청이 요구되고 있다 본 연구에서는 전국규모의 교육용소프트웨어 공모전에 참여하는 경북지역 교사들의 ICT 활용 능력과 학교급별, 지역별, 저작도구별, 분과, 분야별, 저작인수별 실태를 파악하기 위하여 당해연도 경북도 대회 2등급 이상 상위 입상작 48편에 대한 분석 및 고찰을 실시한 결과, 교원의 ICT활용 능력 신장, 지역간 정보격차 해소, 교수 학습 방법 개선 지원을 강화할 필요가 있는 등 다수의 유의미한 결과를 얻었다.

• Clean Technology
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• v.7 no.3
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• pp.161-167
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• 2001

A model was proposed for the removal of poly-dispersed suspended solid by deep bed filtration and the collection efficiency was investigated by computer simulation. Deposited particles on the collector surface may act as additional collector and reduce the pore size of the collector. As a result, the capability of removing suspended particles of the filter bed was improved with the deposition. The filtration process of poly-dispersed suspension shows higher collection efficiency than that of mono-dispersed suspensions. Since the large particles deposited on the collector surface may contribute to the increase of contact between collectors and small particles, the improved overall collection efficiency was obtained.

• Journal of Soil and Groundwater Environment
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• v.13 no.3
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• pp.21-26
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• 2008

Nitrate adsorption from aqueous solutions onto zinc chloride ($ZnCl_2$) treated coconut Granular Activated Carbon (GAC) was studied in a batch mode at two different initial nitrate concentrations (25 and 50 mg/L). The rate of nitrate uptake on prepared media was fast in the beginning, and 50% of adsorption was occurred within 10 min. The adsorption equilibrium was achieved within one hour. The mechanism of adsorption of nitrate on $ZnCl_2$ treated coconut GAC was investigated using four simplified kinetic models : the rate parameters were calculated for each model. The kinetic analysis indicated that pseudo-second-order kinetic with pore-diffusion-controlled was the best correlation of the experimental kinetic data in the present adsorption study.

• Journal of Korean Society of Environmental Engineers
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• v.38 no.9
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• pp.521-527
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• 2016

Nanoscale zero valent iron (nZVI) has been intensively studied for the treatment of a plethora of pollutants through reductive reaction, however, the nano size should be of concern when nZVI is considered for water treatment, due to difficulties in recovery. The loss of nZVI causes not only economical loss, but also potential risk to human health and environment. Thus, the immobilization onto coarse or structured support is essential. In this study, two representative processes for nZVI immobilization on granular activated carbon (GAC) were evaluated, and optimized conditions for synthesizing Fe/GAC composite were suggested. Both total iron content and $Fe_0$ content can be significantly affected by preparation processes, therefore, it was important to avoid oxidation during preparation to achieve higher reduction capacity. Synthesis conditions such as reduction time and existence of intermediate drying step were investigated to improve $Fe_0$ content of Fe/GAC composites. The optimal condition was two hours of $NaBH_4$ reduction without intermediate drying process. The prepared Fe/GAC composite showed synergistic effect of the adsorption capability of the GAC and the degradation capability of the nZVI, which make this composite a very effective material for environmental remediation.

• Journal of Korean Public Health Nursing
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• v.37 no.1
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• pp.97-110
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• 2023

Purpose: This study sought to determine the effect of the competence of nurses and their, work environment on the quality of nursing service in long-term care hospitals using the Donabedian model as a theoretical framework. Methods: This descriptive investigative study analyzed nursing competency, the work environment, and nursing service quality in a group of 182 nurses directly in charge of patient care at long-term care hospitals in special cities, metropolitan cities, and small and medium-size cities. The data were analyzed using IBM SPSS/WIN 27.0 version. Results: In long-term care hospitals, nurses' competence (r=.674, p<.001) and work environment (r=.444, p<.001) were correlated with quality of nursing service, and the nurses' competence was correlated with the work environment (r=.443, p<.001). The factors affecting the quality of nursing service in long-term care hospitals were competence, the work environment, and the age of nurses. Conclusion: In this study, both competence and the work environment of nurses were observed to be important factors in improving nursing service quality in long-term care hospitals. Therefore, efforts aimed at enhancing these factors are necessary to ensure the high quality of nursing service in these hospitals.

• Textile Coloration and Finishing
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• v.4 no.2
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• pp.84-88
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• 1992

셀룰로오스 펄프에 폴리비닐알코올의 블랜드, 가교, 및 카복시메칠화한 아니온성 셀룰로오스계 고분자 흡착제에 대한 모델 카치온 염료, C.I. Basic Red 18의 흡착 및 탈색 성능을 수용액계(pH 4.2)에서 검토하였다. 아니온성 셀룰로오스 고분자 흡착제의 카치온 모델 염료의 흡착등온성은 저농도 영역에서 Sigmoidal 형을 나타내었고 Donnan 흡착 모델 기구로 해석하였다. 하전기 도입에 따라 염료의 흡착능은 증가하였으며 이 흡착능력은 Sodium이온의 첨가에 의하여 저하하였다. 또 아니온 셀룰로오스계 흡착제에 의한 모델 염료의 배수 탈색율은 크게 증가하였으며 입상활성탄보다 우수한 탈색능력을 나타내었다.