• The Journal of Asian Finance, Economics and Business
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• 제6권2호
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• pp.123-133
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• 2019

The study aims to investigate the nexus of between role identity, self-efficacy, feeling of energy, and employee creativity in the hotel industry of Korea. The employees' innovative behaviors like creativity have been many researchers' interest for decades in the hotel industry. The hypotheses depicting the relationship among the variables have been proposed based on a review of existing literature. The number of 215 cases was used for final analysis and the results were explained through structural equation modeling. The results indicate the hotel employees' role identity and creative self-efficacy positively influenced their feeling of energy. Further, both role identity and creative self-efficacy make significant impact on employee creativity. Feeling of energy also makes a positively significant impact on employee creativity. Feeling of energy partially mediates the relationship between the two independent variables and employee creativity. As a result, creative role identity, self-efficacy, and feeling of energy explain the variance of the hotel employees' creativity. The results present that hotel practitioners need to regard their employees' creative roles and build organizational culture to support creative activities so as to enhance employee creativity. Finally, theoretical and practical implications for the hotel industry and future studies have been discussed.

• 한국전산구조공학회논문집
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• 제25권4호
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• pp.363-372
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• 2012

본 논문에서는 수학적 구조 모델과 인공신경망 기법을 상호 유기적으로 결합하여 구조물의 거동 데이터로부터 부재모델 또는 재료모델의 정확도를 높이는 정보기반 하이브리드 모델 업데이트 기법을 개발하였다. 유한요소와 같은 수학적 모델을 사용하여 구조물의 거동을 모사하기 위해서는 재료, 부재, 그리고 시스템의 정확한 모델링이 우선하여야 한다. 그러나 재료, 부재의 각 레벨에서의 수학적인 모델은 이상화과정을 거치면서 중요한 특성을 생략하거나, 시스템 구성시 부재간의 상호작용이나 경계조건의 단순화로 인해 유한요소 모델은 실제 구조물의 거동과 차이를 보이게 된다. 본 논문에서 제시된 하이브리드 모델 업데이트 기법은 구조물의 거동과 수학적 모델의 해석결과 차이를 인공신경망 기법을 사용하여 보완함으로써 시스템 모델의 정확도를 높일 수 있다. 이때 시스템의 거동 데이터로부터 부재 또는 재료모델을 개선할 수 있는 데이터를 추출하여 부재 또는 재료모델을 개선한다. 제시된 기법은 보-기둥 접합부의 이력모델을 개선하는 것으로 검증하였으며, 복잡한 거동을 보이는 시스템 모델링에 광범위하게 사용될 수 있다.

• 한국콘텐츠학회논문지
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• 제12권2호
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• pp.398-410
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• 2012

본 연구는 상사지원인식이 조직구성원들의 역할내 성과와 역할외 성과에 미치는 영향을 직무기반 심리적 주인의식의 매개효과를 중심으로 규명하는데 목적이 있다. 일반기업 종사자 269명으로부터 설문을 받고, 회귀분석과 구조방정식모형을 사용하였다. 선행연구에 의하면, 상사지원인식과 직무성과 간에 정(+)적인 관계가 있다는 것을 확인하였다. 그러나 아직까지는 상사지원인식과 성과 간의 관계에 있어서 직무기반 심리적 주인의식의 매개효과를 실증적으로 분석한 연구가 거의 없었다. 따라서 본 연구는 역할내 성과와 역할외 성과를 예측하는데 있어서 매개효과를 분석하였다. 본 연구에 의하면, 직무기반 심리적 주인의식이 상사지원인식과 역할내 성과 간의 관계에 있어서 완전매개를 하고, 상사지원인식과 역할외 성과 간의 관계에서 부분매개를 하는 것으로 나타났다. 그리고 향후연구와 실무적인 시사점에 대해서 논의하였다.

• 한국간호교육학회지
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• 제19권3호
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• pp.455-464
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• 2013

Purpose: The goal of the study was to investigate nursing students' knowledge and compliance with hand hygiene to find out the variables associated with compliance with hand hygiene. Methods: The participants were 1,020 nursing college students located in Seoul, Ansan and Suncheon. The variables analyzed in this study were; hand hygiene knowledge, hand hygiene compliance, hand washing habits, hand hygiene education with emphasis in school, emphasis on hand washing and role modeling in hospital, and hand hygiene beliefs. Data were analyzed by frequency, $x^2$-test, t-test and Pearson correlation coefficient. Results: 1. The correct answer average percentage of hand hygiene knowledge was 78.4%. 2. The average rates of hand hygiene compliance rate was 78.0% 3. Compliance rate had significant correlation with variables such as hand washing habit, hand hygiene education with emphasis in school, emphasis on hand washing and role modeling in hospital, and hand hygiene belief. Conclusion: 1. It is nessassery for nursing students to receive proper educational on hand hygiene knowledge during practices in nursing school curriculum. 2. Nurses should be encouraged to be a good mentor to nursing students on appropriate hand hygiene compliance in clinical practice.

• Bulletin of the Korean Chemical Society
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• 제34권3호
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• pp.837-850
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• 2013

Bovine viral diarrhea virus (BVDV), a major pathogen of cattle, is a well-characterized pestivirus which has been used as a good model virus for HCV. The RNA-dependent RNA polymerase (RdRp) plays a key role in the RNA replication process, thus it has been targeted for antivirus drugs. We employed two-dimensional quantitative structure-activity relationship (2D-QSAR) and molecular field analysis (MFA) to identify the molecular substructure requirements, and the particular characteristics resulted in increased inhibitory activity for the known series of compounds to act as effective BVDV inhibitors. The 2D-QSAR study provided the rationale concept for changes in the structure to have more potent analogs focused on the class of arylazoenamines, benzimidazoles, and acridine derivatives with an optimal subset of descriptors, which have significantly contributed to overall anti-BVDV activity. MFA represented the molecular patterns responsible for the actions of antiviral compound at their receptors. We conclude that the polarity and the polarizability of a molecule play a main role in the inhibitory activity of BVDV inhibitors in the QSAR modeling.

• 한국정밀공학회지
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• 제30권8호
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• pp.790-796
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• 2013

Micro-speaker diaphragms play an important role in generating a desired audio response. The diaphragm is generally a circular membrane, and the cross section is a double dome, with an inner dome and an outer dome. To improve the sound quality of the speaker, a number of corrugations may be included in the outer dome region. In this study, the role of these corrugations is investigated using two kinds of finite element method (FEM) calculations. Structural FEM modeling was carried out to investigate the change in stiffness of the diaphragm when the corrugations were included. Modal FEM modeling was then carried out to compare the natural frequencies and the resulting vibrational modes of the plain and corrugated diaphragms. The effects of the corrugations on the vibration characteristics of the diaphragm are discussed.

• Journal of Information Technology Applications and Management
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• 제14권3호
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• pp.49-77
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• 2007

Role-based access control (RBAC) models are recently receiving considerable attention as a generalized approach to access control. In line with the increase in applications that deal with spatial data. an advanced RBAC model whose entities and constraints depend on the characteristics of spatial data is required. Even if some approaches have been proposed for geographic information systems. most studies focus on the location of users instead of the characteristics of spatial data. In this paper. we extend the traditional RBAC model in order to deal with the characteristics of spatial data and propose new spatial constraints. We use the object-oriented modeling based on open GIS consortium geometric model to formalize spatial objects and spatial relations such as hierarchy relation and topology relation. As a result of the formalization for spatial relations. we present spatial constraints classified according to the characteristics of each relation. We demonstrate our extended-RBAC model called OOGIS-RBAC and spatial constraints through case studies. Finally. we compare our OOGIS-RBAC model and the DAC model in the management of access control to prove the efficiency of our model.

• BMB Reports
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• 제56권1호
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• pp.15-23
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• 2023

After birth, animals are colonized by a diverse community of microorganisms. The digestive tract is known to contain the largest number of microbiome in the body. With emergence of the gut-brain axis, the importance of gut microbiome and its metabolites in host health has been extensively studied in recent years. The establishment of organoid culture systems has contributed to studying intestinal pathophysiology by replacing current limited models. Owing to their architectural and functional complexity similar to a real organ, co-culture of intestinal organoids with gut microbiome can provide mechanistic insights into the detrimental role of pathobiont and the homeostatic function of commensal symbiont. Here organoid-based bacterial co-culture techniques for modeling host-microbe interactions are reviewed. This review also summarizes representative studies that explore impact of enteric microorganisms on intestinal organoids to provide a better understanding of host-microbe interaction in the context of homeostasis and disease.

• 한국대기환경학회지
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• 제27권1호
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• pp.30-40
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• 2011

Numerical simulations were carried out to investigate the impact of SST spatial distribution on the result of air quality modeling. Eulerian photochemical dispersion model CAMx (Comprehensive Air quality Model with eXtensions, version 4.50) was applied in this study and meteorological fields were prepared by RAMS (Regional Atmospheric Modeling System). Three different meteorological fields, due to different SST spatial distributions were used for air quality modeling to assess the sensitivity of CAMx modeling to the different meteorological input data. The horizontal distributions of surface ozone concentrations were analyzed and compared. In each case, the simulated ozone concentrations were different due to the discrepancies of horizontal SST distributions. The discrepancies of land-sea breeze velocity caused the difference of daytime and nighttime ozone concentrations. The result of statistic analysis also showed differences for each case. Case NG, which used meteorological fields with high resolution SST data was most successfully estimated correlation coefficient, root mean squared error and index of agreement value for ground level ozone concentration. The prediction accuracy was also improved clearly for case NG. In conclusion, the results suggest that SST spatial distribution plays an important role in the results of air quality modeling on high ozone episode at coastal region.

• 유통과학연구
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• 제18권10호
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• pp.15-23
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• 2020

Purpose: Crowdfunding can be a complementary channel in which start-ups or small companies can obtain financial help and take advantage of exploiting the online potential. To activate crowdfunding, it is necessary to consider a consumer's empathic responses. This article examines the role of empathy in the crowdfunding channel platform. We adopted the identification-commitment model to prove the role of empathy. Research design, data, and methodology: Participants were asked to read the charitable crowdfunding campaign. More than 300 young adults completed an online questionnaire and we analyzed it with structural equation modeling (SEM). To find out the role of empathy, we postulate several models which use empathy variable for different purposes. Results: We conclude that empathy has the role of moderator in the identification-commitment model. This means the high empathic response helped the relationship between identification and commitment. However, low empathic response can negatively influence the process of identification to commitment. Conclusions: This study found that virtual empathy is positively related to crowdfunding participation if we can elevate empathy in the crowdfunding channel platform. The findings also show that we need to consider empathic response when we want to raise funds for specific projects such as protecting the natural environment.