• 한국콘텐츠학회논문지
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• 제13권3호
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• pp.362-369
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• 2013

본 연구는 업무 중 스마트폰 사용자의 비공식적인 커뮤니케이션이 성과에 미치는 영향을 조사하는 것이다. 이를 위하여 워터쿨러 효과를 배경으로 티타임으로 대표되는 비공식적인 오프라인 커뮤니케이션과 카카오톡과 같은 비공식적인 온라인 커뮤니케이션을 함께 반영한 연구모형을 개발하였다. 실증분석결과 첫째, 조직 내부인과의 카카오톡은 남성 그룹에서 성과에 긍정적인 영향을 미치는 것으로 나타났으며, 조직 외부인과의 카카오톡은 남성과 여성 그룹 모두에서 성과에 부정적인 영향을 미치는 것으로 나타났다. 둘째, 상호의존도가 높은 업무 그룹에서는 티타임이 긍정적인 영향을 미치는 것으로 나타났지만, 상호의존도가 낮은 업무그룹에서는 조직 내부인과의 카카오톡이 긍정적인 영향을 미치는 것으로 밝혀졌다. 이와 같은 본 연구의 결과는 조직에서의 현명한 스마트폰 사용 지침 개발에 대한 시사점이 있다 하겠다.

• 경영과정보연구
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• 제32권2호
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• pp.213-235
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• 2013

본 연구는 기업의 보안관리의 중요성이 커지고 있는 반면 이에 대한 이해와 관심이 부족한 현실을 지적하고 보안관리를 유연하게 실행할 수 있는 적절한 해결안을 조사하고자 한다. 따라서 본 연구는 보안관리의 강화의지 및 실행에 영향을 미치는 요인으로 조직몰입, 보안위험 경험, 인지된 혜택, 파트너 의존성, 총 4가지의 외생변수를 제안하고 강화의지와 실행의 사이를 강화시켜줄 조절변수로 IT불안정성을 제안하였다. 제안된 연구모형 검증하기 위해 AMOS 19.0을 사용하여 209개 설문을 구조방정식 접근을 통해 분석하였다. 연구결과 파트너 의존성을 제외한 나머지 변수들, 즉 조직몰입, 보안위험 경험, 인지된 혜택, 파트너 의존성은 보안관리 강화의지에 통계적으로 긍정적인 영향을 미치는 것으로 나타났다. 본 연구의 결과를 바탕으로 기업단위의 보안관리에 대한 새로운 학문적 근거를 제안하고 실무적 관리 지침에 중요한 역할을 할 수 있을 것이다.

• Nuclear Engineering and Technology
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• 제51권6호
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• pp.1540-1553
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• 2019

A nuclear power plant (NPP) is a highly complex system-of-systems as manifested through its internal systems interdependence. The negative impact of such interdependence was demonstrated through the 2011 Fukushima Daiichi nuclear disaster. As such, there is a critical need for new strategies to overcome the limitations of current risk assessment techniques (e.g. the use of static event and fault tree schemes), particularly through simulation of the nonlinear dynamic feedback mechanisms between the different NPP systems/components. As the first and key step towards developing an integrated NPP dynamic probabilistic risk assessment platform that can account for such feedback mechanisms, the current study adopts a system dynamics simulation approach to model the thermal dynamic processes in: the reactor core; the secondary coolant system; and the pressurized water reactor. The reactor core and secondary coolant system parameters used to develop system dynamics models are based on those of the Palo Verde Nuclear Generating Station. These three system dynamics models are subsequently validated, using results from published work, under different system perturbations including the change in reactivity, the steam valve coefficient, the primary coolant flow, and others. Moving forward, the developed system dynamics models can be integrated with other interacting processes within a NPP to form the basis of a dynamic system-level (systemic) risk assessment tool.

• 한국환경보건학회:학술대회논문집
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• 한국환경보건학회 2002년도 춘계 국제 학술대회
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• pp.9-12
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• 2002

Diffusive transport of volatile organic compounds(VOCs) and their degradation by bacteria in unsaturated soils are couple by poorly understood mass transfer kinetics at the gas/water interface. Determination of the fate of VOCs in unsaturated soil is necessary to evaluate the feasibility of natural attenuation as a VOC remediation strategy. The objective of this study was to develop a mechanistically based mathematical model that would consider the interdependence of VOC transport, microbial activity, and sorptive interaction in a moist, unsaturated soil. Because the focus of the model was on description of natural attenuation, the advective VOC transport that is induced in engineered remediation processes such as vapor extraction was not considered. The utility of the model was assessed through its ability to describe experimental observations form diffusion experiments using toluene as a representative VOC in well-defined soil columns that contained a toluene degrading bacterium, Pseudomonas Putida, as the sole active microbial species. The coefficient for gas-liquid mass-transfer, K$\sub$LA/, was found to be a key parameter controlling the ability of bacteria to degrade VOCs. This finding indicates that soil size and geometry are likely to be important parameters in assessing the possible success of natural attenuation of VOCs in contaminated unsaturated soils.

• 환경위생공학
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• 제19권4호
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• pp.19-24
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• 2004

The objective of this study was to develop a mechanistically based mathematical model that would consider the interdependence of VOCs transport, microbial activity, and sorptive interactions in a moist, unsaturated soil. Because the focus of the model was on description of natural attenuation, the advective VOCs transport that is induced in engineered remediation processes such as vapor extraction was not considered. The utility of the model was assessed through its ability to describe experimental observations from diffusion experiments using toluene as a representative VOCs in well-defined soil columns that contained a toluene degrading bacterium, Pseudomonas putida G7 md Fl, as the sole active microbial species. The gas-liquid mass-transfer was found to be a key parameter controlling the ability of bacteria to degrade VOCs. This finding indicates that soil size and geometry are likely to be important parameters in assessing the possible success of natural attenuation of VOCs in contaminated unsaturated soils. Therefore we found that Pseudomonas putida G7 and Fl were very effective to remove of refractory pollutants such as toluene in soil by Bio-filter

• Smart Structures and Systems
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• 제5권4호
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• pp.329-344
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• 2009

Ultrasonic chaotic excitations combined with sensor prediction algorithms have shown the ability to identify incipient damage (loss of preload) in a bolted joint. In this study we examine a physical experiment on a single-bolt aluminum lap joint as well as a three-dimensional physics-based simulation designed to model the behavior of guided ultrasonic waves through a similarly configured joint. A multiple bolt frame structure is also experimentally examined. In the physical experiment each signal is imparted to the structure through a macro-fiber composite (MFC) patch on one side of the lap joint and sensed using an equivalent MFC patch on the opposite side of the joint. The model applies the waveform via direct nodal displacement and 'senses' the resulting displacement using an average of the nodal strain over an area equivalent to the MFC patch. A novel statistical classification feature is developed from information theory concepts of cross-prediction and interdependence. This damage detection algorithm is used to evaluate multiple damage levels and locations.

• 한국사회복지학
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• 제63권2호
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• pp.179-205
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• 2011

암환자에게 부부적응은 심리적인 안녕 뿐만 아니라 치료경과 및 생존율에 영향을 미치는 것으로 보고되고 있어 이들의 부부적응을 도모하기 위한 사회복지 노력과 관심이 절실히 필요하다 하겠다. 이에 본 연구는 암환자와 배우자의 커플자료를 수집하여 이들의 부부적응에 대해 조사하였으며, 기초자료가 미비한 실정에서 부부관계의 지표로 부부적응에의 필수고려 요인으로 지목되고 있는 부부의사소통의 영향을 조사하였다. 또한 암환자와 배우자의 상호의존성을 고려하여 부부의사소통이 부부적응에 미치는 영향을 자기 자신에게 미치는 영향(자기효과), 상대방에게 미치는 영향(상대방효과)을 고찰하였다. 이를 통해 부부적응에 긍정적 부부의사소통의 중요성을 제시하였으며, 부정적 의사소통 유형인 요구-철회의사소통에서 환자의 배우자에 대한 상대방효과가 유의한 것으로 나타나 환자에 대한 의사소통 교육에의 필요성을 제시하였다. 이러한 연구결과를 바탕으로 실천적 함의 및 후속연구에 대한 제언을 제시하였다.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2017년도 춘계학술대회 논문집
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• pp.195-218
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• 2017

The paper tests the above socio-cognitive model with four empirical case studies of leading Korean science and technology research and technology transfer organizations. The case studies demonstrate clear differences in individuals' frames about the technology transfer process and arising conflicts. As a result, technology transfer process is not fully controllable and is highly contextual. We argue, whereas public policy in countries approaching technology frontier provides essential support for defining and exploiting best practices (routines/pathways) for technology transfer at organizational level, they have not matured enough to support the timely identification and resolution of conflicts between individual actors, hence the inefficiencies. Therefore, among others, public policy for technology transfer could consider allowing an inclusive approach to recognition of best practices for technology transfer and innovation processes, increased social interactions between technology transfer actors, and their training on resolution of individual level cognitive conflicts.

• 한국보육지원학회지
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• 제12권3호
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• pp.1-19
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• 2016

The purpose of this study was to examine the effect of parenting efficacy measured at 6 months of infancy, and on parenting stress at 9-months of infancy through a short-term longitudinal approach. Participants were 116 couples living in Seoul and Gyeonggi-do, whose first born children were in infancy. The results of the 116 couples were analyzed through the APIM analysis method. The results of the APIM showed that mothers' and fathers' actor effect was significant, which meant that parenting efficacy at 6 months of infancy could predict the existence of parenting stress at 9 months of infancy. However, the partner effect of both mothers and fathers was insignificant. This research demonstrates the significance of parenting efficacy at early infancy, which in turn affects parenting stress as well as factors that need to be considered in pre-parental education.

• 한국조경학회지
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• 제27권1호
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• pp.64-78
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• 1999

Recently, new concept and paradigm of 'Environmental Sustainability' is taking a growing interest in environmental planning and design. This study is to establish the environmental sustainability principles, based on the concept of ESSD, and to develop the evaluation model of environmental sustainability for korean rural housing estates. A sustainability indices system, which is composed of 5 principles, 16 categories, an 37 estimation items, was finally established. Five principles of environmental sustainability for rural housing estate were. 'Sustainable Land Use', 'Interdependence of Men and Nature', 'Ecological Principles and Diversity', 'Efficient use of Energy and Recycling', and ' Minimizing Environmental Pollution'. And weighting values of each indicators, such as estimation items, categories, and principles, were estimated, based on the result of AHP etc. The questinnaire survey was conducted for experts of four related major fields. Finally, the validity and reliability of the sustainability indices system were verified.