공작기계 주축용 베어링 결함검출

오석영,정의식,임영호 한국정밀공학회 1994 한국정밀공학회 학술발표대회 논문집 Vol.1994 No.11월

청소년 사회참여역량 측정 지표 개발 연구

오석영,최창욱,진성희 미래를 여는 청소년학회 2015 미래청소년학회지 Vol.12 No.2

The purpose of this study is to explore the concept of youth's social participation competency and identify subconcept of the competency such as personal citizenship, community citizenship, global citizenship. The concept of youth's social participation competency has been described as many different words such as youth citizenship, civic participation, social engagement. This study, however, tries to understand it as social participation which is the fundamental activity of youth learning and defines its sub-constructs in three different levels considering youth psychological and behavioral development levels. Delphi method had been conducted to define its concept and sub-competencies, and twice surveys conducted to examine their validity and credibility. The results of the study is to find personal citizenship could consist of sense of rights, sense of responsibility and morality; community citizenship is composed of respecting diversity, political participation, and community service; and global citizenship is comprised of national identity, contributions for international society, and global communication. Moreover the confirmatory factor analysis show high model fit index in their measurement model. 이 연구는 청소년 사회참여역량의 정의 및 하위 지표를 개발하고 검증하는 것을 목적으로 한다. 기존의 선행연구에서는 시민성, 시민참여, 사회참여 등의 다양한 용어로 사회참여역량이 기술되어왔으며 인지영역과 실천영역을 구분하여 설명하였거나, 사회적 자본의 육성을 위한 태도로 간주하여 주요 역량개념을 도출하였다 그러나 본 연구는 청소년의 인지 및 행동 발달을 실천할 수 있는 공간적 발달적 개념으로 사회참여역량의 하위 범주를 개인 시민성, 공동체 시민성, 세계 시민성으로 구분하여 제시 하였다. 연구방법으로는 지금까지 사회참여역량에 대한 문헌연구를 통해 하위 영역을 설정하였으며 두 번의 델파이조사 및 2 회차의 설문을 거쳐 타당성을 검증하였으며, 확인적 요인분석을 통해 측정모형 적합도를 검증하였다. 그 결과 개인 시민성은 권리의식, 책임감, 도덕성 이상 3개의 세부지표를, 공동체 시민성은 다양성 존중, 정치 참여, 사회봉사 이상 3개의 세부지표를, 세계 시민성은 국가정체성, 국제사회에의 공헌, 글로벌 의사소통 이상 3개의 세부지표가 선정되었고 측정모형에도 높은 적합지수를 보였다.

중소기업 근로자의 핵심가치 내재화 유형과 학습지원 환경, 조직몰입간의 관계 탐색

오석영,배상현 한국기업교육학회 2020 기업교육과인재연구 Vol.22 No.2

The purpose of this study is to explore how the types of SME employees’ internalization of core values to be formed and which characteristics and perception on learning supportive climates(LSCs) and organizational commitment(OC) show the statistical difference among the types. The study also aims to explore the mediating role of the internalization of core views in the relationship between LSCs and OC. To test the types, difference, and relationships, K-means clustering analysis, One-way ANOVA with post-test Bonferroni, and structural equation modeling analysis have been conducted. The results show the four types of clustering were identified such as internalization with perception>practice(cluster 1), practice>perception(cluster 2), both practice and perception high(cluster 3) and both low(cluster 4), and also present that cluster 3 generally gets higher perception scores of both LSCs and OC rather than other clusters. Moreover, the cluster 3 show high percentage in the higher position and age, and in men. Finally the study identifies the internalization of core values statistically mediate in the relationship between LSCs and OC. Several academic and practical implications have been proposed based on the results of the study. 본 연구는 중소기업 근로자들간의 핵심가치 내재화를 인식과 실천 수준 및 그 차를 기준으로 유형별로 분석하고 이들 군집별 일반적 특성 및 학습지원환경적, 조직몰입에 있어 차이가 있는지 살펴는 것을 목적으로 한다. 아울러 학습지원환경이 핵심가치 내재화의 인식 및 실천 수준을 높이는 동시에 그 차이를 줄이는지, 또한 이를 통해 조직몰입을 높이는지에 대한 핵심가치 내재화의 매개효과의 분석을 목적으로 한다. 연구 대상은 9개 중소기업 종사자 543명을 대상으로 진행되었으며 군집분석, 일원분산분석 및 Bonferroni 사후분석, 구조모형분석 등이 진행되었다. 연구결과 핵심가치 실천이 인식보다 높은 집단(군집 1), 인식이 실천보다 높은 집단(군집 2), 인식과 실천 모두 높은 집단(군집 3), 인식과 실천 모두 낮은 집단(군집 4)로 유형화 되었으며 이들 집단 중 군집 3은 학습지원환경(조직, 상사, 동료지원)에 대한 인식과 정서 및 규범적 몰입 모두에 있어 다른 집단에 비해 높은 것으로 나타났다. 아울러 개인특성에 있어는 군집 3이 타집단에 비해 학력, 직위가 다소 높았으며, 남성의 비율이 높았다. 또한 구조모형분석을 통해 조직, 상사, 동료의 학습지원 태도는 핵심가치 내재화를 규정하는 인식과 실천의 차를 줄이는 동시에 그 수준을 높였으며 이를 매개로 조직몰입을 높이는 것으로 나타났다. 본 연구결과를 통해 몇 가지 학문적 실무적 함의가 제시되었다.

Phase Transition of Thermosensitive Homopolymer Gels

오석영,배영찬 한국고분자학회 2008 한국고분자학회 학술대회 연구논문 초록집 Vol.33 No.1

Factors Affecting the Reductive Transformation of Nitroaromatics by Zero-Valent Iron: Dissolved Anions, Adsorption, Iron Loss, and Possibility of Clogging

오석영 한국자원공학회 2009 Geosystem engineering Vol.12 No.3

Factors affecting the reduction of nitroaromatics by zero-valent iron in groundwater were investigated by using 2,4-dinitrotoluene, nitrobenzene, and 2,4,6-trinitrotoluene. Batch experiments showed that the ratio of adsorbed nitrobenzene to cast iron surface area was approximately 30%, similar to those of 2,4-dinitrotoluene and 2,4,6-trinitrotoluene. Dissolved chloride (0.1 mM) and sulfate ions (0.01 mM) could enhance the reduction of 2,4-dinitrotoluene by zero-valent iron via the enhancement of iron corrosion. Long-term column experiments showed the iron consumption in the column to be attributable to the reduction of 2,4-dinitrotoluene in groundwater. Therefore, the longevity of the iron column may be predicted stoichiometrically by the amount of 2,4-dinitrotoluene in groundwater. The use of Ottawa sand in the iron column did not result in a significant clogging problem during 2,4,6-trinitrotoluene reduction under the specified conditions. However, the use of either silica sand or a high concentration of dissolved bicarbonate/ carbonate in solutions was shown to effect clogging of the iron column. The results suggest that some important factors should be considered when applying an iron reduction process for the treatment of nitroaromatics in groundwater. Factors affecting the reduction of nitroaromatics by zero-valent iron in groundwater were investigated by using 2,4-dinitrotoluene, nitrobenzene, and 2,4,6-trinitrotoluene. Batch experiments showed that the ratio of adsorbed nitrobenzene to cast iron surface area was approximately 30%, similar to those of 2,4-dinitrotoluene and 2,4,6-trinitrotoluene. Dissolved chloride (0.1 mM) and sulfate ions (0.01 mM) could enhance the reduction of 2,4-dinitrotoluene by zero-valent iron via the enhancement of iron corrosion. Long-term column experiments showed the iron consumption in the column to be attributable to the reduction of 2,4-dinitrotoluene in groundwater. Therefore, the longevity of the iron column may be predicted stoichiometrically by the amount of 2,4-dinitrotoluene in groundwater. The use of Ottawa sand in the iron column did not result in a significant clogging problem during 2,4,6-trinitrotoluene reduction under the specified conditions. However, the use of either silica sand or a high concentration of dissolved bicarbonate/ carbonate in solutions was shown to effect clogging of the iron column. The results suggest that some important factors should be considered when applying an iron reduction process for the treatment of nitroaromatics in groundwater.

Protein partitioning of Aqueous Protein Solution

오석영,배영찬 한국고분자학회 2007 한국고분자학회 학술대회 연구논문 초록집 Vol.2007 No.4

배움공동체로서의 기업

오석영 한국배움학회 2010 한국배움학회 학술대회 논문집 Vol.2010 No.1

상수도내 펌프장 설비의 안정적 관리방안

오석영,안창진,O, Seok-Yeong,An, Chang-Jin 한국상하수도협회 1996 水道 Vol.23 No.1

수처리기계의 신뢰성 향상 방안

오석영,Oh, Suk-Young 한국유체기계학회 2004 한국유체기계학회 논문집 Vol.19 No.4

Enhanced Reduction of Perchlorate by Zero-Valent Iron: Effect of Temperature, pH, and Buffering Capacity

오석영 한국자원공학회 2010 Geosystem engineering Vol.13 No.4

The objective of this study was to enhance the reduction of perchlorate by zero-valent iron (ZVI) to ensure that perchlorate-contaminated water can be significantly treated by employing the iron reduction process. Experiments were designed to accelerate the reduction rate of perchlorate by ZVI by using pH control, alteration of buffering capacity, and elevated temperatures. Batch experiments with pure iron granules demonstrated that chloride was a reduction product of perchlorate at elevated temperature. It was hypothesized that under pH-controlled conditions,perchlorate may be significantly reduced in an iron-packed column at moderately elevated temperatures (< 100oC), i.e. without the need to increase the temperature more than 100oC. The results showed that approximately 60% of perchlorate could be reduced at 75oC and pH 4.7 with 0.2 M acetate after 120 min. At 99oC and pH 4.7 with 0.6 M acetate, more than 99% of perchlorate could be removed after 490 min. Most hydrogen ions in the buffer solutions were consumed with short retention times (<120 min), indicating that buffering capacity is critical for enhancing the extent and kinetics of perchlorate reduction in iron-packed columns. However, even without buffering capacity,perchlorate could be completely reduced by ZVI at 150oC in 5 hrs. Our results suggested that a series of iron-packed columns equipped with heating and buffer-control devices are a viable option for treating perchlorate-laden water continuously at moderately high temperatures (< 100oC). A steam-assisted temperature/ pressurecontrolled batch reactor may be another option for treating perchlorate within a temperature range of 150 to 200oC.