[덕질만렙: 운동화 덕후, 오창동] 마이클 조던이 신던 운동화가 내게 왔을 때

오창동,이생(사진) 메이데이 2022 Paper Vol.263 No.-

호텔기업의 ERP 사용자 특성과 변화관리가 혁신저항에 미치는 영향에 관한 연구

오창동,장병주,윤대균 한국기업경영학회 2010 기업경영연구 Vol.17 No.3

Many of today’s corporations are in the process of introducing ERP (Enterprise Resource Planning)as a tool of business process improvement and management innovation in order to adapt to the fastchanging management environment and to secure competitive advantage. Installation of ERP takes a long time of six months to one year or more, requires a lot of cost and manpower, and is a project accompanied by big and small pains due to change in business process within the organization. This study is intended to find about the effect of user characteristics on the resistance to innovation when ERP is introduced, look at change management which exerts influence on the resistance to innovation. To collect the data, approximately 350 questionnaires were distributed to staffs who had worked at hotels Gangwon provence. Among all the surveys, 274 survey data were selected as valid samples with 76 of them which were considered as answered insincerely excluded. The data were processed and analyzed by SPSS 17.0. By verifying each hypothesis after confirming the validity of models, the conclusions were drawn out as follows: first, resistance to innovation resulting from introduction of ERP is influenced by user characteristics(self-perceived ability, satisfaction with previous work); second, Chief Executives and Project Manager of change agent exerts meaningful influence on the resistance to innovation but Process Innovator and Consultant do not influence on resistance to innovation. It can be said that in H Resort, an atmosphere of complacency due to continued growth and the employees’ mentality fearing change and not feeling the need for innovation were expressed as resistance to innovation concerning ERP. According to the result of this research, in order to minimize resistance to innovation and maximize positive effect when introducing new system and conducting management innovation in the future, it may be necessary to create a sense of crisis to escape complacency,through continuous education. Also, in public companies where there is, by nature, frequent change in the top management. it will be the way to minimize resistance to innovation and maximize fruit of management innovation for the new top management to support a new system or management innovation from a long-term perspective rather than conducting short-term innovation just for the sake of result, and to show the employees the will for innovation. 본 연구는 변화관리 전략과 ERP 도입에 따른 사용자 특성이 혁신저항에 어떠한 영향을 미치는가를 알아보기 위하여 실시되었다. 연구의 결과는 첫째, ERP 도입에 따른 혁신저항은 사용자 특성 즉 지각된 자기능력과 이전업무방식 만족도에 따라 영향을 받는 것으로 나타났다. 둘째 변화관리자의 최고 경영자층과 프로젝트 매니져는 혁신저항에 영향을 미치는 것으로 나타났지만, 프로세스이너베이터와 컨설턴트는유의한 영향을 미치지 않는 것으로 나타났다

도덕기반이론을 통해 본 한국 정당의 유권자 동원 담론

오창동 한국사회학회 2016 한국사회학회 사회학대회 논문집 Vol.2016 No.12

민주화 이후 한국 정당체제를 설명하는 가장 큰 변수는 지역 균열이었다. 2000년대 이후 지역주의 영향력이 약화되고 세대, 이념과 같은 새로운 변수가 대두하면서 한국 정치의 균열구조를 규명하는 것은 더욱 어려운 일이 되었다. 이러한 정당체제의 형해화 현상의 원인을 두고 다양한 주장이 대립하고 있다. 사회경제적 불평등 문제를 정치적 의제로 확산시켜야 할 중도와 진보 정당들이 그 역할을 제대로 수행하지 못했다는 정당 책임론이 제기되었지만, 이미 탈산업화 시대에 진입해 있는 한국 사회의 정치적 맥락에 주목한 연구자들도 있었다. 한국도 공고화된 정당 체제가 무너지고 다원적인 가치에 기반을 둔 투표가 이뤄지는 서구 사회와 비슷한 경로를 걷고 있다는 것이 이들의 주장이다. 한국과 마찬가지로 가치에 기반한 투표를 둘러싼 논쟁이 가열되고 있는 미국에서는 최근 정치적 의사 결정과 정당간의 경쟁을 인간이 가진 다섯 개의 도덕성 기반으로 풀어낼 수 있다는 조너선 하이트의 ‘도덕 기반이론’이 큰 주목을 받고 있다. 본 연구는 이러한 도덕 기반 이론을 바탕으로 한국 사회의 가치 투표 현상에 대한 이해의 폭을 넓혀 보고자 하였다. 이를 위해서 보수 정당이 공동체적 결속과 연관되어 있는 도덕 기반을 중시하며, 진보 정당은 개인주의적 도덕 기반을 중시할 것이라는 가설을 설정하였다. 그리고 2012년 한 해 동안 2012년 대선에서 경쟁했던 두 주요 정당이 공식적으로 발표한 논평 자료 7000여 개를 수집하고, Word2Vec 알고리즘으로 자동화된 텍스트 분석을 시도하였다. 분석 결과, 보수 정당은 자기 정당 후보자를 경쟁 정당 후보자와 차별화하기 위해 충성, 권위, 품위와 관련된 도덕 기반을 진보 정당에 비해서 훨씬 적극적으로 사용하는 경향을 보였다. 다만 이러한 사용 양상은 자기 정당 후보자에 대한 서술 과정보다는 적대 정당 후보자에 대한 공격과 비판을 제기할 때 크게 두드러지는 것으로 나타났다. 이는 도덕 기반 이론에 근거한 정당간의 ‘도덕성 경쟁’이 한국에서도 어느 정도 적실성을 가지고 있음을 보여주고 있다. 그러나 도덕성에 의한 차별화가 상대 정당에 대한 비판과 네거티브에 집중되어 있고, 자기 정당의 정치적 정체성 형성과는 크게 관련이 없는 점에서 미루어 볼 때 이러한 정당간의 도덕적 경쟁 구조가 지속적으로 이어질 수 있을지에 대해서는 의문 부호가 붙는다.

공동현상을 고려한 동압유체 빗살무늬 저널베어링의 동특성 해석

창동일(Dongil Chang),장건희(Gunhee Jang),윤진욱(Jinwook Yoon),홍동표(Dongpyo Hong) 한국소음진동공학회 1999 한국소음진동공학회 학술대회논문집 Vol.1999 No.6

공동현상을 고려한 소형 정밀 모터용 빗살무늬 저널베어링의 해석

창동일,장건희 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.11

The Reynolds equation, incorporating Elrods cavitation algorithm, is discretized on a rectangular grid in computational space through coordinate mapping in order to accurately analyze a herringbone grooved journal bearing of a spindle motor in a computer hard disk drive. The pressure distribution and cavitation area are determined by using the finite volume method. Predicted results are compared to experimental data of previous researchers. It was found that positive pressure is developed within the converging section of the bearing and that a cavity occurs in the diverging section. Cavitation has been neglected in the previous analysis of the herringbone grooved bearing. Load capacity and bearing torque are increased due to the increased of eccentricity and L/D and the decrease of the grooved width ratio. The maximum load capacity was found to occur at a groove angle of 30 degrees while bearing torque remains constant due to the variation of the groove angle. The cavitation region is significantly decreased with the inclusion of herringbone grooves. However, the region increases with the increase of the eccentricity, L/D, groove angle and the rotational speed and the decrease of the grooved width ratio.

Processed Panax ginseng, Sun Ginseng Increases Type I Collagen by Regulating MMP-1 and TIMP-1 Expression in Human Dermal Fibroblasts

송규춘,창동신,이혜진,김진희,박정일,황귀서 고려인삼학회 2012 Journal of Ginseng Research Vol.36 No.1

In the present study, effects of sun ginseng (SG) on the collagen synthesis and the proliferation of dermal fibroblast were investigated. Collagen synthesis was measured by assaying procollagen type I C-peptide production. In addition, the level of matrix metalloproteinase (MMP)-1 was assessed by western blot analysis. SG suppressed the MMP-1 protein level in a dose-dependent manner. In contrast, SG dose-dependently increased tissue inhibitors of MMP (TIMP)-1 production in fi broblasts. SG increased type I collagen production directly and/or indirectly by reducing MMP-1 and stimulating TIMP-1 production in human dermal fi broblasts. SG dose-dependently induced fi broblast pr oliferation and this, in turn, can trigger more collagen production. These results suggest that SG may be a potential pharmacological agent with anti-aging properties in cultured human skin fibroblast.

Methods for Detection and Measurement of Hydrogen Peroxide Inside and Outside of Cells

이서구,창동신,정우진,강동민 한국분자세포생물학회 2010 Molecules and cells Vol.29 No.6

Hydrogen peroxide (H2O2) is an incompletely reduced metabolite of oxygen that has a diverse array of physiological and pathological effects within living cells depending on the extent, timing, and location of its production. Characterization of the cellular functions of H2O2 requires measurement of its concentration selectively in the presence of other oxygen metabolites and with spatial and temporal fidelity in live cells. For the measurement of H2O2 in biological fluids, several sensitive methods based on horseradish peroxidase and artificial substrates (such as Amplex Red and 3,5,3′5′-tetramethylbenzidine) or on ferrous oxidation in the presence of xylenol orange (FOX) have been developed. For measurement of intracellular H2O2,methods based on dihydro compounds such as 2′,7′-dichlorodihydrofluorescein that fluoresce on oxidation are used widely because of their sensitivity and simplicity. However, such probes react with a variety of cellular oxidants including nitric oxide, peroxynitrite, and hypochloride in addition to H2O2. Deprotection reaction-based probes (PG1 and PC1) that fluoresce on H2O2-specific removal of a boronate group rather than on nonspecific oxidation have recently been developed for selective measurement of H2O2 in cells. Furthermore, a new class of organelletargetable fluorescent probes has been devised by joining PG1 to a substrate of SNAP-tag. Given that SNAP-tag can be genetically targeted to various subcellular organelles,localized accumulation of H2O2 can be monitored with the use of SNAP-tag bioconjugation chemistry. However,given that both dihydro- and deprotection-based probes react irreversibly with H2O2, they cannot be used to monitor transient changes in H2O2 concentration. This drawback has been overcome with the development of redoxsensitive green fluorescent protein (roGFP) probes, which are prepared by the introduction of two redox-sensitive cysteine residues into green fluorescent protein; the oxidation of these residues to form a disulfide results in a conformational change of the protein and altered fluorogenic properties. Such genetically encoded probes react reversibly with H2O2 and can be targeted to various compartments of the cell, but they are not selective for H2O2because disulfide formation in roGFP is promoted by various cellular oxidants. A new type of H2O2-selective, genetically encoded, and reversible fluorescent probe, named HyPer, was recently prepared by insertion of a circularly permuted yellow fluorescent protein (cpYFP) into the bacterial peroxide sensor protein OxyR.

활성산소에도 순기능 있다

이서구,창동신,Lee, Seo-Gu,Chang, Dong-Sin 한국과학기술단체총연합회 2006 과학과 기술 Vol.39 No.9

RIS를 활용한 SLAM에서 밀리미터파 검출확률

김효원,창동진 대한전자공학회 2024 전자공학회논문지 Vol.61 No.2

본 논문에서는 RIS(reconfigurable intelligent surface)를 활용한 SLAM(simultaneous localization and mapping)에서 반사되어 수신 가능한 밀리미터파를 모델링한다. 또한, 수신신호의 기하학적 채널모델을 통해 검출확률(detection probabilities)을 유도한다. RIS 소자의 위상 변위와 빔포머 설계에 따른 밀리미터파의 검출확률을 확인하고, SLAM 가능성을 알아본다. In this paper, we present the signal propagation for reconfigurable intelligent surface (RIS)-enabled monostatic simultaneous localization and mapping (SLAM). Furthermore, we also derive the detection probabilities of the propagated signals from the geometric channel model. Numerical results include the analysis of the detection probabilities, depending on RIS configurations, precoder, and combiner.

Alloxan 유도 당뇨병상태에서 과산화지질생성에 미치는 Brazilin의 효과

안영수,길이룡,소동수,창동신,김진형,박광식,문창규 한국환경독성학회 1996 환경독성보건학회지 Vol.11 No.2

Brazilin was tested for its ability to inhibit alloxan induced lipidperoxidation. Lipid peroxide contents in liver, kidney and serum were measured by the TBA method. ICR mice receiving alloxan at a dose of 43mg/kg via the tail vein after a 24hrs starvation showed significantly increased lipid peroxide contents as compared to untreated control. Lipid peroxide contents in liver, kidney and serum of alloxan-induced diabetic mice were dose-dependently decreased by the treatment of brazilin at a dose of 10mg/kg, 50mg/kg, 100 mg/kg for 5 days.