리더의 코칭리더십이 조직구성원의 창의적 행동에 미치는 영향: 그릿에 의해 조절된 전환학습의 매개효과 중심으로

신민철(Shin, Min-Cheol),오상진(Oh, Sang-Jin) 한국경영교육학회 2020 경영교육연구 Vol.35 No.2

[연구목적] 본 연구는 최근 급변하는 경영환경 속에서 지속가능경영을 발현하기 위해 창의적인 아이디어를 실행시킬 수 있는 리더의 코칭리더십을 이해하고, 코칭리더십과 창의적 행동 관계에서 그릿의 조절 효과와 전환학습의 조절된 매개효과를 실증하고, 시사점을 제공하고자 한다. [연구방법] 국내기업 종사자를 대상으로 설문 조사하였으며, 설문지는 온라인을 통한 질의응답 방식으로 688부를 배부하여 335부가 최종 분석에 사용되었다. 수집된 자료는 신뢰도와 타당성을 검증하였고, 가설검증은 부트스트랩 방식의 SPSS Process Macro 3.0을 사용하였다. [연구결과] 리더의 코칭리더십은 조직구성원의 전환학습과 창의적 행동에 유의한 영향을 미치는 것으로 나타났다. 조직구성원의 전환학습은 창의적 행동에 유의한 영향을 미쳤고, 코칭리더십과 창의적 행동 간의 관계를 매개했다. 조직구성원의 그릿과 전환학습은 리더의 코칭리더십과 그들의 창의적 행동 간의 관계에서 조절된 매개효과를 나타냈다. [연구의 시사점] 기업은 조직구성원의 창의적 행동을 증대시키기 위해서 리더의 코칭리더십 향상을 위한 다양한 투자와 노력이 필요하고, 조직구성원의 전환학습과 그릿을 높이기 위한 관심과 지원을 강화해야 하는 실무적 시사점을 제시하고 있다. [Purpose] This study was intended to identify the leader’s coaching leadership who can execute creative ideas to express sustainability management in the recent fast-changing business environment, demonstrate the moderating effect of GRIT and the moderated mediating effect of transformative learning in the relationship between coaching leadership and creative behavior. [Methodology] The survey was conducted on employees of domestic companies, and the questionnaire distributed 688 copies online and 335 copies were used for the final analysis. The data collected have been validated for reliability and validity, and the hypothesis testing uses SPSS Process Macro 3.0 by bootstrap. [Findings] The leader’s coaching leadership was shown to have a positive effect on the transformative learning and creative behavior of the organization members. The organization member’s transformative learning has had a positive impact on creative behavior, and has mediated the relationship between coaching leadership and creative behavior. The GRIT and transformative learning of organizational members have shown a moderated mediating effect in the relationship between the coaching leadership and their creative behavior. [Implications] This research presents practical implications that various investments and efforts are needed to improve the coaching leadership in order to increase the creative behavior of the members of the organization and to strengthen interest and support to enhance the transformative learning and GRIT.

디지털 시대의 행정책임에 대한 재조명 : 공무원 인식을 중심으로

오철호 忠南大學校 地域開發硏究所 2005 地域開發論叢 Vol.17 No.-

Theory Building in Knowledge Utilization : A Review

오철호 한국정보사회진흥원 2004 정보화정책 Vol.11 No.2

Despite voluminous studies on knowledge utilization, the extant research provides little support for claims that particular variables affect the use of knowledge in decisive ways. This research effort has been made more complicated recently by the changing contexts of knowledge utilization. In particular, the knowledge utilization field gives remarkably little attention to the systematic accumulation of knowledge from research studies. The purpose of this study is to critically examine studies from the 1990s and to see how they cope with key issues in the field. This study specifically focuses on the question: What conceptual and empirical work has been done in the area of knowledge utilization over the past ten years? An in-depth analysis of research studies shows that the studies done in the 1990s made little conceptual and empirical advancement. In general, these studies seem to walk one step away from infancy in terms of theory building efforts and the empirical orientation of research analysis. They, however, need to improve the rigor in theory building in terms of integrating partial theories or conceptual constructs. This study also suggests a set of ways for improving the efforts of theory building.

MRC 결합의 레이크 수신기에서 채널 추정 알고리즘의 성능분석

오동진,나철훈 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

In this paper, we analyze channel estimation algorithms in a RAKE receiver with MRC. There are 3 popular channel estimation algorithms, which are WMSA(Weighted Multi-Slot Averaging) algorithm, EGE(Equal Gain Estimation) algorithm. and SSE(Symbol-to-Symbol Estimation) algorithm. We analyze asynchronous IMT-2000(3GPP) which employ 3 different channel estimation algorithms by using MATLAB. We used jakes fading channel model for the analysis. From simulation results, we could observe that the performance of WMSA algorithm is better than others in low Doppler effect(3km/h). However, in the case of high Doppler effect(120km/h), the EGE algorithm is more efficient. In this case the simple estimator with EGE algorithm seems to be more useful.

한국인 당뇨병 및 비당뇨병 환자에서의 뇌혈관 질환 유무에 따른 PAI-1 촉진자 유전자형과 인슐린저항성에 관한 연구

오승준,김영설,박철영,김덕윤,김성운,양인명,김진우,최영길,팽정령,정경천 대한비만학회 2000 The Korean journal of obesity Vol.9 No.2

연구배경 : 혈전현상을 특징으로 하는 질환에서는 Plasminogen activator inhibitor-1 (PAI-1) 이 높은 활성도를 보이는데, PAI-1 치는 당뇨병, 심근경색증, 비만 등에서 높다고 밝혀진 바 있다. 또한 당뇨병 환자들의 합병증의 주요한 병인은 죽상경화증으로 혈전현상이 특징인 질환에서 증가하는 PAI-1이 당뇨병 환자에서 높다. 목적 : 정상인에서의 PAI-1 유전자 촉진자의 유전자형의 분포 및 혈액농도를 관찰하고, 당뇨병 및 뇌혈관 질환 환자군에서의 PAI-1 유전자 촉진자 유전자형의 분포 및 혈액농도를 측정하여 정상인과 차이점을 알아본다. 당뇨병 환자군에서의 혈장 PAI-1 치와 인슐린 저항성, 전구 인슐린 등과의 상관관계를 살펴보고, 인슐린저항성과 대혈관질환의 지표로 사용될 수 있는지 알아보았다. 방법 : 대상으로는 정상인 76명, 제2형 당뇨병 환자 56명, 뇌혈관질환이 동반된 제2형 당뇨병 환자 48명, 뇌혈관질환 환자 51명을 선택하여, 환자의 혈액에서 인슐린, 공복시 혈당, 전구인슐린, 중성지방, 총콜레스테롤 및 기타 생화학 검사 및 이학적 검사를 시행하였다. 환자의 DNA를 채취하여 전사개시 -675bp를 포함하는 대립형질 특이 시발체를 사용하여 중합효소 연쇄 반응을 실시하여, 그 유전자형을 판독하였다. 결과 : 정상 대조군 76명 (46.4±11.1세), 2형 당뇨병 환자 56명 (58.3±12.6세), 뇌경색증 환자 51명 (63.1±13.2세) 대상으로 하였다. PAI-1 촉진자 유전자형의 (4G/4G, 4G/5G, 5G/5G)빈도는 정상 대조군이 각각 23.7%, 75.0%, 1.3%, 뇌경색 환자군이 19.6%, 66.7%, 13.7%, 뇌경색이 동반된 당뇨병 환자군이 33.3%, 58.3%, 8.3% 였다. (X2=12.6, p=0.05). 이러한 사실은 서구인에 비해 4G/4G, 5G/5G 동형 유전자형이 낮은 결과였다. 각 군별 혈장 PAI-1 농도는 정상 대조군 13.4, 1.8 ~ 65.2 ng/mL (중앙값 , 범위 ) 2형 당뇨병 환자군 14.4, 2.9 ~ 47.8 ng/mL, 뇌경색 환자군 21.9, 6.2 ~ 154.7 ng/mL , 뇌경색이 동반된 2형 당뇨병 환자군 28.8, 3.2 ~ 139.3 ng/mL 로 차이를 보였다 (p=0.000). 전체 대상에서 PAI-1 촉진자 부위의 유전자형에 따른 PAI-1 활성도와 항원 농도는 차이를 보이지 않았다. 그러나 PAI-1 활성도는 혈중 중성지방, 전구인슐린, 체질량지수와 독립적인 상관관계를 보였다 (p=0.000, p=0.000 and p=0.005). 결론 : 결론적으로 PAI-1 촉진자 부위의 유전자형은 뇌경색증의 지표는 아니며, PAI-1 활성도를 결정짓는 인자는 유전적 요인보다는 혈중 중성지방, 전구 인슐린, 체질량지수와 같은 대사적 요인으로 생각된다. Plasminogen activator inhibitor-1 (PAI-1) is known be related to insulin resistance and several components of the large vascular disease. Notably, the high frequencies of diseases such as coronary heart disease or stroke are related to type 2 diabetes complications. We studied to find out whether the PAI-1 promother genotype could be a marker for cerebral infarction in type 2 patients. Subject patients were; 56 type 2 diabetics (age 58.3±12.6), 51 patients with cerebral infarction (age 63.1±13.2), 48 type 2 diabetics with cerebral infarction (age 64.8±9.3) , and 76 healthy control (age 46.4±11.1). The 4G/5G genotype of PAI-1 promoter was evaluated by polymerase chain reaction and endonuclease digestion. PAI-1 promoter genotype frequency (4G/4G, 4G/5G, 5G/5G) was 23.7%, 75.0% and 1.3% in healthy control, 17.9%, 67.9% and 14.3% in type 2 diabetes patients, 19.6%, 66.7% and 13.7% in cerebral infarction patients, 33.3%, 58.3% and 8.3% in type 2 diabetics with cerebral infarction (X^2=12.6, p=0.05). This finding is lower in frequency of 5G/5G homozygote than that reported in Caucasians. The plasma PAI-1 concentrations according to the disease were 13.4, 1.8 ~ 65.2 ng/mL (median, range) for healthy control, 14.4, 2.9 ~ 47.8 ng/mL for type 2 diabetes, 21.9 6.2 ~ 154.7 ng/mL for cerebral infarction , and 28.8, 3.2 ~ 139.3 ng/mL, for cerebral infarction with type 2 diabetes (p=0.000). In the all subjects, PAI-1 concentration and activity of PAI-1 promoter genotype did not show any significant difference. However, the PAI-1 activity was independently associated with serum triglyceride level, plasma proinsulin and BMI (p=0.000, p=0.000 and p=0.005 respectively). We concluded that PAI-1 genotype is not a marker for the cerebral infarction ; however, the genotype is related to PAI-1 concentration , and therefore it seems to be that metabolic factors such as triglyceride level or plasma proinsulin or BMI are more in relations with determining the PAI-1 concentration than the genotype.

흰쥐에서 중추 고장성식염 주입에 의한 승압효과에 미치는 ANP의 영향

오승호,양민준,염철호 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

The present study was designed to examine the effects of intracerbroventricular (ICV) administration of atrial natriuretic peptide (ANP) on the pressor response induced by ICV hypertonic NaCl in rats. Rats (male. Sprague-Dawley) weighing 220-300g were anesthetized with pentobarbital sodium (50mg/kg. IP) and their right lateral cerebral ventricle were cannulated. Both isotonic and hypertonic NaCl (0.15 M, 0.6 M and 1.2 M) were ICV (3μl/min) applied and arterial blood pressure and heart rate (HR) responses registered. Central administration of hypertonic NaCl solution caused an elevation in mean arterial pressure (MAP) and HR, while the response magnitude was comparable correlated to the NaCl concentration. The ANP (3pmol/min, ICV) alone did not cause recognizable changes in MAP. When ANP was administered with 0.6 M NaCl, however, hypertonic NaCl-induced changes in MAP were interrupted. These results indicate that ANP may have the role in central cardiovascular regulation. It is also suggested that in some conditions. ANP may act as an antipressor substance in the brain.

알루미나이징 表面處理한 構造用鋼의 彼勞强度 및 破壞擧動에 관한 硏究

吳世旭,朴春根,全泰玉,全哲昊,周原植,李圭用 東亞大學校 大學院 1978 大學院論文集 Vol.2 No.-

Aluminizing-treated structural steel is excellent in high temperature oxidation resistance, wear resistance and corrosion resistance. So, it has been widely used for the machine parts which have required such properties. However it is difficult to find out any study result of the notched influence on the aluminizing-treated materials and the second diffusion materials. In this investigation the low carbon steel plates with with V-notches were coated with aluminum and made into second diffusion. With these specimcns the bending fatigue strength and fatigue life were observed and also crack propagation of alloy layer was investigated. The results obtained are as follows: 1) On the smoothed specimens a fatigue limit of aluminizing material was lower than the one of raw material, but it was more increased than the one of heat treatment material, and the fatigue limit of second diffusion material was lowest. 2) On the V-notched specimens a fatigue limit of aluminizing material was higher with 44% increase ratio than the one of raw material and with 63% increase ratio than the one of heat treatment material, and the rate of increase became lower increase ratio in a fatigue limit comparing to aluminzing material, with no influence of notch radius. 3) According as the notch radius became smaller, the fatigue limit became. higher on the raw material, it was same on th aluminizing material and lowest on the second diffusion material. 4) Crack initiation period was 0.04% below of fatigue crack life and the full growth period of crack propagation at alloy layer was 0.1%. The crack propagation from alloy layer to matrix was 16% of the fatigue crack life. This means that the crack propagation rate at alloy layer was very fast but the crack delay at the boundary of both was so long. 5) Crack propagation grows through defects, inclusion, peeling and previous boundary.

광합성세균 미생물막반응기에 의한 유기성폐수의 처리특성

오광근,이철우,전영중,이재홍 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.6

홍색비유황 광합성세균인 Rhodopseudomonas capsulata를 선택하여 porous ceramic bead를 충진시킨 충진형 반응기(Packed-bed reactor, PBR)와 분말활성탄을 현탁시킨 유동산 반응기(Fluidized-bed reactor, FBR)에서 미생물막을 형성하여 폐수처리를 비교한 결과 PBR이 FBR보다 BOD 부하량 변화에 더 안정적인 처리성을 보였다. 체류시간 (hydraulic retention time, HRT)에 따른 처리성은 유입폐수 농도를 각각 BOD 10,000, 20,000 mg/ℓ로 하였을 때, HRT 1일 이상에서 90% 이상의 처리효율을 가지며, 유출수의 BOD 농도는 각각 350, 800 mg/ℓ이었다. PBR에서 유입수의 BOD 농도변화에 다른 유출수의 농도를 측정하여 단위부피당 기질부하량 상수 (maximum specific BOD loading rate, P) 및 부착미생물 포화기질 제한농도 상수(half saturation constant, K_6)를 구한 결과, 각각 22.2 gBOD/ℓ·day, 1,750 mgBOD/ℓ이었고, 처리효율 90% 이상을 나타내는 BOD 용적부하(volumetric BOD loading rate)는 20 gBOD/ℓ·day 이상으로 표준활성오니법의 0.6 gBOD/ℓ·day에 비하여 30배가 넘는 값을 나타내었다. An efficient packed-bed type biofilm reactor charged with immobilized phototrophs was developed to treat organic wastewater at an extremely high volumetric loading rate. The packed bed reactor (PBR) charged with porous ceramic beads was superior to a fluidized-bed reactor suspended with activated carbon powders in terms of many aspects such as BOD removal efficiency, operational stability, and overall economics. For wastewater with BOD concentration as high as 20,000 mg/l, the BOD removal efficiency was maintained above 90% when the hydraulic retention time (HRT) was longer than 1 day. The allowable volumetric BOD loading rate of this reactor (20gBOD/l·day) is more than ten-folds higher than that of an ordinary activated sludge method. The behaviour of the reactor was represented well by a Monod type kinetic equation with a maximum specific BOD loading rate(P) of 22.2gBOD/l·day and a half saturation constant(K_s) of 1,750 mgBOD/l.

참나무 亞屬 주요 수종의 물리적 성질에 따른 역학적 성질에 관한 연구(Ⅱ) : 휨강도 Bending strength

吳承源,韓哲洙 全北大學校 1995 論文集 Vol.40 No.-

This study was carried out in order to get some basic data for wood rationally utilization by means of clearing mechanical properties which were lived in korea. Six lepidobalanus such as Quercus variabilis, Q. aliena, Q. serrata, Q. mongolica, Q. acutissima, Q. dentata were used for this research. The summarised results of this study were as following. 1) To the moisture content increased, bending strength and modulus of elasticity were inclined to decrease. 2) To the specific gravity increased, bending strength and modulus of elasticity were inclined to increase.

광합성세균에 의한 미생물막의 형성

오광근,이철우,전영중,이재홍 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.6

홍색비유황 광합성세균인 Rhodopseudomonas capsulata를 선택하여 packed-bed reactor에서 미생물막을 형성할 때, porous ceramic bead가 다른 담체에 비해 우수하였고, 일정한 유입농도하에서 체류시간(hydraulic retention tiem, HRT)이 짧을수록 미생물막 형성이 양호하였으며, 그 때 반응기내의 세포농도는 11,400mg/l로 현탁처리시의 세포농도에 비하여 3~8배 증가하였다. PBR에서 미생물막의 형성은 cell attachment, microcolony formation, biofilm formation의 단계를 거쳐 형성되는 것으로 관찰되었으며, PBR이 FBR보다 안정적인 미생물 부착을 보였고 특히 PBR에서는 BOD용적 부하가 15gBOD/ℓ·day 이상이 되어도 미생물막의 부착비율은 90% 이상을 유지하였다. 전자현미경으로 담체의 표면 및 내부에 고정화된 광합성세균을 확인할 수 있었다. The formation of microbial films(biofilm) by a non-sulfur phototrophic bacteria, Rhodopseudomonas capsulata, on inorganic media was studied. Porous ceramic beads(PCB) were superior to other immobilizing media for the biofilm formation in a packed-bed reactor. It was found that the formation of microbial films favored a lower hydraulic retention time, showing a higher ratio of cells attatched to the media to those suspended in the solution. The cell concentration in the biofilm reactor was as high as 11,400 mg/ℓ, which is 8-folds of the cell concentration in a ordinary suspended treatment. It was observed that the formation of microbial film by R. capsulata followed a general serial process of cell attachment, microcolony formation, and biofilm formation. The microbial films thus formed was very stable even for an extremely high volumetric BOD loading rate of 15 gBOD/ℓ·day. The scanning electron micrographs of the microbial films showed that the cells were attached to both the surface and pores of the media.