• 한국산학기술학회논문지
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• 제22권6호
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• pp.441-452
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• 2021

본 연구는 잡크래프팅이 혁신행동을 통해 조직헌신에 미치는 영향에 대해 검증하고, 잡크래프팅과 혁신행동을 촉진하는 요인으로 구성원의 지식공유를 설정하여 조절효과를 분석하였다. 또한 잡크래프팅이 혁신행동을 통하여 구성원의 조직헌신에 이르는 간접효과가 지식공유의 수준에 따라 다를 것으로 예상하고 조절된 매개효과를 분석하였다. 분석을 위해 전국의 스타트업 및 중소기업, 공공기관, 대기업 종사자 등 463명을 대상으로 설문조사를 진행하였고, SPSS 18.0과 SPSS Process Macro 분석을 통해 가설을 검증하였다. 분석결과 첫째. 잡크래프팅이 구성원의 혁신행동에 긍정적인 영향을 미치며, 둘째, 지식공유 수준이 높을수록 구성원의 혁신행동에 긍정적인 영향을 미치는 것으로 나타났다. 셋째, 혁신행동은 구성원의 조직헌신에 긍정적인 영향을 미치며, 넷째, 잡크래프팅과 조직헌신 간의 관계에서 혁신행동의 매개효과가 나타났다. 마지막으로 잡프래프팅이 혁신행동을 통해 조직헌신에 영향을 미치는 간접효과에 대한 지식공유의 조절된 매개효과는 유의미하지 않은 것으로 나타났다. 이러한 가설검증 결과를 토대로 본 연구의 이론 및 실무적 시사점을 제시하였다.

• 재활복지공학회논문지
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• 제7권1호
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• pp.59-66
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• 2013

본 연구는 장애인이 재활보조공학시스템을 이용하여 취업한 기업의 직종 및 직업분야에 적응 만족을 갖게 하는데 있으며, 이를 위해 재활보조공학지원(재활보조공학의 H/W와 S/W)과 서비스품질의 질을 기반으로 취업생이 직장생활에 편리하게 활동할 수 있게 하는 요인들을 분석하여 취업생 적응에 대한 행동의도에 미치는 전반적 영향을 확인하고자 하였다. 서울, 경기도, 인천 지역에 소재한 기업체에서 직업교육훈련을 받고 취업한 장애인 대상으로 설문지를 배포하였고, 최종적으로 유효한 설문지 594부였다. 가설을 검증하기 위해 SEM(structural equation model)을 이용하였는데, 본 연구의 결과를 요약하면 다음과 같다. 첫째, 재활보조공학H/W(하드웨어)의 질은 재활보조공학S/W(소프트웨어)의 질에 영향을 미쳤다. 둘째, 재활보조공학S/W의 질은 서비스품질의 질에 영향을 미쳤다. 셋째, 재활보조공학H/W의 질은 서비스품질의 질에 영향을 미쳤다. 넷째, 서비스품질의 질은 취업생 적응에 대한 행동의도에 영향을 미쳤다. 다섯째, 재활보조공학S/W의 질은 취업생 적응에 대한 행동의도에 영향을 미쳤다. 여섯째, 재활보조공학H/W의 질은 취업생 적응에 대한 영향을 미쳤다. 그리고 매개변수(서비스품질의 질)로도 간접효과 영향을 주었다. 본 연구의 결과로는 재활보조공학지원(재활보조공학 H/W와 S/W) 기반으로 한, 서비스품질의 질과 융합적인 형태로 수용할 경우, 취업생 적응에 대한 행동의도에 더 많은 영향을 미칠 수 있는 시사점을 제공하였다.

• 한국언론정보학보
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• 제59권
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• pp.180-210
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• 2012

이 연구의 목적은 우리나라에서 이루어진 2000년대 10년간의 사과문 분석을 통하여 우리나라 사람들이 어떤 위기 커뮤니케이션 전략을 사용하고 있는지 실제적인 상황 진단을 내려 보는 것이다. 이를 위해 기존 문헌에서 사용된 사과전략의 유형과 우리나라 사과문에서 독 특하게 발견된 사과 유형을 탐색하여 분석에 이용하였다. 또한 조직별, 위기 유형별, 위기진행시기별로 각각 다르게 나타나는 위기 커뮤니케이션 전략을 세부적으로 알아보았다. 분석 결과 위기 커뮤니케이션 전략 중 사과 전략과 수정행위 전략이 가장 많이 사용되고 있었으며, 입지 강화와 동정심유발 전략이 그 뒤를 이었다. 조직별, 위기 유형별, 위기 진행시기별로도 선호되는 위기 커뮤니케이션 전략에 차이가 있었는데, 정부나 공적기관의 경우, 위기의 책임성이 내부에 있는 경우 및 통제력이 있다고 여겨지는 인문사회위기인 경우 정당화 전략을 선호하는 경향이 나타났다. 이와 같은 결과는 우리나라의 문화적 특징인 정, 체면 의식과 관련되어 있는 것으로 보인다. 즉 광범위한 의미에서 간접적 수정행위 전략, 초월 전략 등은 일종의 체면유지 전략으로 이해될 수 있으며, 입지강화나 동정심 유발은 인정에 호소하는 전략이라고 해석할 수 있다. 향후 연구에서는 이러한 우리나라의 문화적 특징을 반영한 새로운 위기 커뮤니케이션 유형화와 함께 그것의 효과를 입증하는 실증연구가 이루어져야 할 것으로 보인다.

• Journal of Photoscience
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• 제3권1호
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• pp.1-7
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• 1996

When cucumber (Cucumis sativus L.) cotyledon discs were floated on $\delta$-aminolevulinic acid, oxyfluorfen, or rose bengal solution under light condition following 20 h dark incubation, rapid electrolyte leakage from the tissues occurred. The electrolyte leakage from the tissues was dependent on the compounds treated, their concentrations, and the duration of light exposure to the tissues. Dark incubation before exposure to continuous white light enhanced electrolyte leakage from the tissues treated with the compounds and reduced lag period for the activity of the compounds. Electrolyte leakage from the treated tissues was greatly influenced by the light intensity to which they were exposed. Higher light intensities stimulated electrolyte leakage and reduced lag period. Porphyrin biosynthesis inhibitors, gabaculine and 4,6-dioxoheptanoic acid, completely inhibited electrolyte leakage from the oxyfluorfen-treated tissues. Protection against the activity of $\delta$-aminolevulinic acid from electrolyte leakage was complete with 4,6-dioxoheptanoic acid, but not with gabaculine. However, gabaculine and 4,6-dioxoheptanoic acid gave no such protection against rose bengal activity. In summary, our results indicate that $\delta$--aminolevulinic acid, oxyfluorfen, and rose bengal exert their effects by causing electrolyte leakage from the treated tissues in a similar manner, except that oxyfluorfen has an apparent lag period for its action on electrolyte leakage increase. All above compounds require preincubation of treated tissues in darkness and subsequent light exposure with a high intensity for their maximal activities. Our results also support that in the presence of light, $\delta$-aminolevulinic acid and oxyfluorfen cause cellular damage through the indirect generation of singlet oxygen from accumulated tetrapyrroles of porphyrin pathway, whereas rose bengal causes cellular damage through the direct generation of singlet oxygen.

• Nutritional Sciences
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• 제6권3호
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• pp.148-154
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• 2003

Although various raw plant materials have been demonstrated to exert anti-obesity effects to a greater or lesser extent in both humans and animals when they are used to supplement the diet, it has not been shown extensively that they influence adipocyte cell differentiation involving lipid metabolic gene expressions. Using a well-established 3T3-L1 preadipocyte differentiation system, we decided to look into molecular and cellular event occurring during adipocyte differentiation when raw plant materials aye included in the process, in an effort to demonstrate the potential use of a screening system to define the functions of traditionally well-known materials. To these ends, the effects of ethanol (EtOH) or EtOH/distilled water (DW) extracts of Wax Gourd were examined using cytochemical and molecular analyses to determine whether components of the extracts modulate adipocyte differentiation of 3T3-Ll preadipocytes in vitro. The cytochemical results demonstrated that EtOH or EtOH/DW extracts did not affect lipid accumulation and cell proliferation, although the degree of lipid accumulation was influenced slightly depending on the extract. EtOH extract was highly effective in apoptotic induction during differentiation of 3T3-Ll preadipocytes (p<0.05). Reverse transcription-polymerase chain reaction (RT-PCR) analysis of lipoprotein lipase (LPL), Uncoupling protein (Ucp) 2, 3 and 4 also showed that while LPL expression was not influenced, Ucp2, 3 and 4 were up regulated in the EtOH extract-treated group and down regulated in the EtOH/DW extract-treated group. These changes in gene expressions suggest that the components in different fractions of Wax Gourd extracts may modulate lipid metabolism by either direct or indirect action. Taking these results together, it was concluded that molecular and cellular analyses of adipocyte differentiation involving lipid metabolic genes should facilitate understanding of cellular events occurring during adipocyte differentiation. Furthermore, the experimental scheme and analytical methods used in this study should provide a screening system for the functional study of raw plant materials in obesity research.

• 전자공학회논문지
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• 제53권6호
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• pp.69-79
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• 2016

기업은 대부분의 경우 보안사고가 발생하면 내부 대응절차에 따라 신속한 사고처리에 집중하고 사고원인, 문제점 및 조치결과를 최고 경영진에게 보고하면서 사고를 마무리한다. 또한 외부에서 발생한 보안사고는 그때마다 관심을 가지고 적극적으로 내부와 연결하여 문제점을 발굴하고 조치를 하는 경우와 외부의 문제로 치부하며 잠시 관심정도만 가지고 넘기는 경우도 있을 것이다. 기업은 보안사고 발생 시점에 관심과 역량을 집중하여 대응하는 것 뿐만 아니라 보안사고가 발생하지 않도록 지속적인 사고예방 활동을 하는 것이 중요하며 이를 위해 체계적이며 일관성 있고 시스템적인 방법이 제공되어야 한다. 이와 같은 목적에서 본 논문에서는 보안사고 예보시스템을 제안한다. 보안사고 예보시스템은 기업의 내부에서 일어난 직접 보안사고 뿐만 아니라, 외부에서 발생한 간접 보안사고로부터 향후 보안사고 예측에 도움이 되는 사고발생 유발인자들을 모아서 데이터베이스화하고 기업에서 가지고 있는 축적된 사고 경험과 대응 프로세스들을 시스템화하여 상호작용을 하도록 만드는 것이다. 보안사고 예보시스템은 잠재적으로 발생할 수 있는 사고의 예방조치활동에 효과적인 대안이 될 수 있을 것이다.

• 환경영향평가
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• 제4권3호
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• pp.87-94
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• 1995

At both international and national levels, such as in the Rio Declaration and the EU's Fifth Environmental Action Plan, governments have committed themselves to the adoption of the precautionary principle (UNCED 1992, CEC 1992). These commitments mean that the existence of uncertainty in appraising policies and proposals for development should be acknowledged. Uncertainty arise in both the prediction of impacts and in the evaluation of their significance, particularly of those cumulative impacts which are individually insignificant but cumulatively damaging. The EC network of EIA experts, stated at their last meeting in Athens that indirect effects and the treatment of uncertainty are one of the main deficiencies of current EIA practice. Uncertainties in decision-making arise where choices have been made in the development of the policy or proposal, such as the selection of options, the justification for that choice, and the selection of different indicators to comply with different regulatory regimes. It is also likely that a weighting system for evaluating significance will have been used which may be implicit rather than explicit. Those involved in decision-making may employ different tolerances of uncertainty than members of the public, for instance over the consideration of the worst-case scenario. Possible methods for dealing with these uncertainties include scenarios, sensitivity analysis, showing points of view, decision analysis, postponing decisions and graphical methods. An understanding of the development of cumulative environmental impacts affords not only ecologic but also socio-economic investigations. Since cumulative impacts originate mainly in centres of urban or industrial development, in particular an analysis of future growth effects that might possibly be induced by certain development impacts. Not least it is seen as an matter of sustainability to connect this issue with ecological research. The serious attempt to reduce the area of uncertainty in environmental planning is a challenge and an important step towards reliable planning and sustainable development.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.190.1-190.1
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• 2016

One of the most serious problems faced by billions of people today is the availability of fresh water. According to statistics, 15% of the world's total output of dye products is discharged into the environment as dye wastewater, which seriously pollutes groundwater resources. For the treatment of chemically and biologically contaminated water the advanced oxidation processes (AOPs) shows the promising action. The main advantage with AOPs is the ability to degrade the organic pollutants to $CO_2$ and $H_2O$. For this degradation process the AOPs generation of powerful and non-selective radicals that may oxidize majority of the organic pollutants present in the water body. To generate the various reactive chemical species such as radicals (${\bullet}OH$, ${\bullet}H$, ${\bullet}O$, ${\bullet}HO_2$) and molecular species ($H_2O_2$, $H_2$, $O_2$) in large amount in water, we have used the atmospheric pressure plasma. Among the reactive and non-reactive species, the hydroxyl radical (${\bullet}OH$) plays important role due to its higher oxidation potential (E0: 2.8 V). Therefore, in this work we have checked the degradation of various dyes such as methyl orange, methylene blue and congo red using different type of atmospheric pressure plasma sources (Indirect jet and direct jet). To check the degradation we have used the UV-visible spectroscopy, HPLC and LC-MS spectroscopy. Further, to estimate role of ${\bullet}OH$ on the degradation of dyes we have studied the molecular dynamic simulation.

• 대한간호학회지
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• 제31권3호
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• pp.477-491
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• 2001

Purpose: This study was designed to construct a structural model for health promoting behavior in patients with chronic respiratory disease. A hypothetical model was developed based on the literature review. Method: Data was collected by questionnaires from 235 patients with chronic respiratory disease in a General Hospital in Seoul. Data analysis was done using SAS 6.12 for descriptive statistics and the PC-LISREL 8.13 Program for Covariance Structural Analysis. Result: The results are as follows : 1. The fit of the hypothetical model to the data was moderate. It was modified by excluding 2 path and including free parameters and 3 path to it. The modified model with path showed a good fitness to the empirical data($\chi$2=80.20, P=0.05, GFI=0.95, AGFI=0.88, NNFI=0.95, NFI=0.96, RMSR=0.01, RMSEA =0.06). 2. The perceived benefits, self-efficacy, and a plan of action were found to have significant direct effects on the health promoting behavior in patients with chronic respiratory disease. 3. The health perception, self-esteem, and activity related to affect were found to have indirect effects on the health promoting behavior in patients with chronic respiratory disease. Conclusion: The modified model of this study is considered appropriate in explaining and predicting health promoting behavior in patients with chronic respiratory disease. Therefore, it can effectively be used as a reference model for further studies and suggested direction in nursing practice.

• The Korean Journal of Physiology and Pharmacology
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• 제8권2호
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• pp.95-100
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• 2004

Ischemic preconditioning (IPC) has been accepted as a heart protection phenomenon against ischemia and reperfusion (I/R) injury. The activation of ATP-sensitive potassium $(K_{ATP})$ channels and the release of myocardial nitric oxide (NO) induced by IPC were demonstrated as the triggers or mediators of IPC. A common action mechanism of NO is a direct or indirect increase in tissue cGMP content. Furthermore, cGMP has also been shown to contribute cardiac protective effect to reduce heart I/R-induced infarction. The present investigation tested the hypothesis that $K_{ATP}$ channels attenuate DNA strand breaks and oxidative damage in an in vitro model of I/R utilizing rat ventricular myocytes. We estimated DNA strand breaks and oxidative damage by mean of single cell gel electrophoresis with endonuclease III cutting sites (comet assay). In the I/R model, the level of DNA damage increased massively. Preconditioning with a single 5-min anoxia, diazoxide $(100\;{\mu}M)$, SNAP $(300\;{\mu}M)$ and 8-(4-Chlorophenylthio)-guanosine-3',5'-cyclic monophosphate (8-pCPT-cGMP) $(100\;{\mu}M)$ followed by 15 min reoxygenation reduced DNA damage level against subsequent 30 min anoxia and 60 min reoxygenation. These protective effects were blocked by the concomitant presence of glibenclamide $(50\;{\mu}M)$, 5-hydroxydecanoate (5-HD) $(100\;{\mu}M)$ and 8-(4-Chlorophenylthio)-guanosine-3',5'-cyclic monophosphate, Rp-isomer (Rp-8-pCPT-cGMP) $(100\;{\mu}M)$. These results suggest that NO-cGMP-protein kinase G (PKG) pathway contributes to cardioprotective effect of $K_{ATP}$ channels in rat ventricular myocytes.