공작기계 주축용 베어링 결함검출

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

학력 간 학습 형태가 숙련향상 및 조직성과에 미치는 영향 분석 : 제조업 생산직 중심으로

오석영 한국직업능력개발원 2011 직업능력개발연구 Vol.14 No.3

This study investigates the difference of learning opportunity(formal learning and informal learning) according to education levels as well as the deference of the effect of the learning activities on skill improvement and organizational performance(job satisfaction and organizational commitment) in manufacturing sets. Education levels were grouped into secondary school graduates and post-secondary graduates. To examine two research questions, HCCP data provided by KRIVET was used, t-test and chi-square test were conducted for the first research questions, and structural equation modeling was conducted for the second research question. Through the statistical analyses, this research found that post-secondary graduates have more learning opportunities quantitatively than secondary graduates. However, secondary graduates have more learning performance in the effect of learning activities on skill improvement and organizational performance than post-secondary graduates. 본 연구는 기업 내 학력별 형식학습 및 무형식학습 참여 현황을 분석함으로써 학습기회의 균등이 실현되는지 알아보며, 기업 내 형식학습 및 무형식학습 참여가 숙련향상 및 조직성과(직무만족도 및 조직몰입도)에 미치는 영향에 있어 학력별(고졸 이하 집단, 초대졸 이상 집단) 차이가 있는지 알아보는 것을 목적으로 한다. 한국직업능력개발원에서 실시한 ?인적자본기업패널?의 자료를 바탕으로 연구목적과 관련된 2개의 가설을 검증하였는데 그 결과는 다음과 같다. 첫째, 학력 간 형식 및 무형식학습 참여에 있어 양적인 차이가 존재하였으나, 두 학습활동에 대한 인지적(만족도) 차이에 있어서는 거의 차이가 없는 것으로 나타났다. 둘째, 형식학습의 숙련향상 및 조직성과에 대한 효과가 학력 간 발생하였으며, 무형식학습의 숙련향상 및 조직성과에 대한 효과도 학력 간 발생하는 것으로 나타났다. 하지만 숙련향상의 조직성과에 대한 영향은 두 집단 간 차이가 없는 것으로 나타났다. 이 연구결과는 향후 제조업 생산직 근로자들 중 중등직업교육 졸업자들의 기업 내 학습활동계획 수립에 기여할 것을 기대한다.

The effects of workplace learning on organizational socialization in the youth workforce

오석영 서울대학교 교육연구소 2016 Asia Pacific Education Review Vol.17 No.4

The purpose of this study was to identify how high school graduate newcomers adjust to working in organizations. This study examines how their formal learning, intended informal learning, and unintended informal learning experiences jointly influence their adjustment processes [e.g., role clarity and personal–organizational (P-O) fit]. It also explores the extent to which the newcomers’ adjustment processes relate to socialization outcomes (e.g., job satisfaction, organizational commitment, and intention to quit) and their mediating effects on the relationship between the types of learning and socialization outcomes. Results show that formal learning and intended informal learning have a strong positive relationship with P-O fit, while unintended informal learning is positively associated only with role clarity. In addition, role clarity indirectly and P-O fit directly affect job satisfaction, organizational commitment, and intention to quit. The implication for management practices and future research is discussed.

조직 내 권력 형태와 조직학습활동간의 관계 탐색

오석영 한국경영교육학회 2014 경영교육연구 Vol.29 No.2

The purposes of this study is to identify the relationship between power and organizational learning activities in Korean companies. The forms of power this study uses are episodic and system power, that is proposed by Lawrence et al.(2005). The episodic power consist of ‘influence’ and ‘force’, while the systemic power is constituted of ‘domination’ and ‘discipline.’ Moreover, this study regards organizational learning activities as interactive learning and knowledge transfer activities. Based on literature, this study theoretically develop a conceptual model with 7 hypotheses regarding how four different forms of power impact on interactive learning and knowledge transfer activities. To examine the hypotheses, HCCP data provided by KRIVET was used, structural equation model analysis was conducted. This research found that the domination of power has strong relationship to both interactive learning and knowledge transfer activities but the force of power has negative relationship to the learning activities. In order to facilitate organizational learning activities by using the force of power, the power of force need to be conduct with the power of influence. Moreover the episodic power and systematic power need to jointly implement to organizational learning activities to achieve organizational innovation. 본 연구는 조직 내 권력 형태와 조직학습활동간의 관계를 탐색해 봄으로써 조직학습활동을 유발시키는 조직 내 권력의 종류 및 특징, 역할을 살펴보고자 한다. 조직 내 권력 형태는 Lawrence와 그의 동료들이 주장한(2005) 일화적 권력(episodic power), 즉 ‘강압(force)’과 '영향(influence)’과 체제적 권력(systemic power), 즉 ‘지배(domination)’와 ‘규율(discipline)’의 틀 속에서 조직 문화적 특성과 결부시켜 재해석 하였다. 한편 조직학습활동은 Crossan과 동료들이 주장한(1999) 상호작용 학습(지식의 축적과정)과 지식의 전이과정으로 보고 앞의 권력적 특징과의 관계를 살펴보았다. 분석 자료는 2011년에 실시된 인적자원기업패널자료를 활용하였다. 결과로는 일화적 권력 중 ‘강압’은 ‘영향’을 통해 상호학습 작용 및 지식 전이를 돕고 직접적으로 조직학습활동에는 정(+)의 영향을 주지 못하는 것으로 나타났다. 아울러 체제적 권력인 ‘지배’는 ‘규율’ 및 ‘영향’에 정(+)의 관계를 보였으며, 조직학습활동에도 긍정적 영향을 주는 것으로 나타났다. 시사점으로는 첫째, ‘영향’이 배재된 ‘강압’은 학습 작용을 일으키는 데 의미가 없으며, 항상 병행되어 일어나야 할 것이며, 둘째, 절차나 규범을 의미하는 ‘지배’는 학습활동을 안정적으로 유지하는 역할을 해야 할 것이다.

Molecular Simulations and Thermodynamic Modeling for Closed-Loop Phase Miscibility of Aqueous PEO Solutions

오석영,양한얼,배영찬 한국고분자학회 2013 Macromolecular Research Vol.21 No.8

Closed-loop (CL) phase miscibility behavior of aqueous poly(ethylene oxide) (PEO) solutions was studied by means of molecular simulations and thermodynamic modeling. We first have performed a molecular dynamics (MD) simulation of PEO-water solutions. A careful MD procedure is established based on the corresponding experiments so that the correct surrounding conditions of the simulated cells are constructed. We computed radial distribution functions, number of hydrogen bonds, energy of mixing, mean-squared displacements, and radius of gyration with respect to the temperature. We found that hydrogen bonds between PEO and water decrease more rapidly than those of water and water with increasing temperature, indicating lower critical solution temperature (LCST) behavior. In the heterogeneous phase temperature range, both mixing energy and radius of gyration showed lower values than those of the homogenous phase, which correspond well with the CL type miscibility behavior. Secondly, a thermodynamic modeling technique is presented to quantitatively describe phase equilibrium, using the energy parameters obtained from molecular simulations. We calculated the CL temperature-composition phase diagram of PEO-water solutions using this modeling method and compared it with the experimental data. The calculated results are also consistent with the experimental data using only one scaling parameter. CL phase miscibility of PEO-water solutions is understood successfully by these two types of studies.

조직학습관점에서 본 조직 침묵: 국내외 조직 침묵 연구 동향 분석을 바탕으로

오석영,조혜나,정혜윤 한국기업교육학회 2020 기업교육과인재연구 Vol.22 No.3

This study aims to identify how organizational silence take place and influence other indivudal and organizational outcome in the previous literature and also explore how organizational silence can connect to organizational learning activities from social constructivist perspective. The study consider organizational silence as four different types such as acquiescent, defensive, prosocial, and reflective silence. A integrative literature review method was used for analyzing previous organizational silence literature, 68 peer-reviewed domestic articles, and 73 international journal articles, the results were respectively presented by the individual, organizational, and social levels by input (motivation)- process (silence types)-outcome metrics. The study found that employee factors, manager factors, organizational culture, system, and social environment factors had been considered as the organizational silence’s motivators, as well as various variables such as intention to quit, and organizational commitment had been regarded as individual, organizational outcomes. The study suggested episodic and systematic power relationship based on trust and justice are important moderators in the relationship between organizational silence and organizational learning, several academic and practitional implications were suggested from organizational learning perspective. 본 연구는 조직학습과정에서 발견되는 조직 내 침묵행동의 다양한 특성을 조직 침묵을 주제로한 국내외 선행연구 분석을 통해 알아보고 조직 침묵의 동인과 결과가 어떻게 조직학습활동과 연계되는 지 알아보는 것을 목적으로 한다. 사회적 구성주의 관점에서 조직학습과정을 보았고 조직침묵은 체 념적, 방어적, 친사회적, 성찰적 침묵으로 보았다. 조직 침묵에 대한 선행연구 분석은 통합문헌조사방 법을 사용하였고 RISS와 SCOPUS를 통해 국내외 관련연구 141편을 분석하였다. 분석 결과 근로자 요 소, 관리자요소, 조직문화, 제도, 시스템, 사회적 환경 등의 요소들이 조직침묵의 주요 동인으로 연구 되었고 침묵은 그 특성에 따라 이직의도, 반생산적 행동, 조직몰입, 조직학습 등 다양한 개인과 조직 행동에 영향을 미치는 것으로 나타났다. 연구결과를 바탕으로 조직학습적 차원에서 다양한 유형의 침묵이 관리자와의 미시적 정치행위를 통해 조절될 수 있으며 조직 권력에 대한 신뢰, 공정성 등을 통해 학습활동으로 연계시킬 수 있다는 시사점이 도출되었다. 그밖에 조직학습 과정에서 부정적 침 묵을 줄이고 성찰적 침묵을 활성화 시킬 수 있는 실무적과제도 함께 제안되었다.

Group Contribution Method for Group Contribution Method for Estimation of Vapor Liquid Equilibria in Polymer Solutions

오석영,배영찬 한국고분자학회 2009 Macromolecular Research Vol.17 No.11

This study introduces a specified group-contribution method for predicting the phase equilibria in polymer solutions. The method is based on a modified double lattice model developed previously. The proposed model includes a combinatorial energy contribution that is responsible for the revised Flory-Huggins entropy of mixing, the van der Waals energy contribution from dispersion, a polar force and specific energy contribution. Using the group-interaction parameters obtained from data reduction, the solvent activities for a large variety of mixtures of polymers and solvents over a wide range of temperatures can be predicted with good accuracy. This method is simple but provides improved predictions compared to those of the other group contribution methods.

수처리기계의 신뢰성 향상 방안

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

New Intelligent ABR Traffic Control for preventing Buffer Saturation

오석영,박동조 한국통신학회 1998 한국통신학회 학술대회논문집 Vol.17 No.3

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.